1. A centrifugal concrete mixer, including a base frame, a mixing drum provided on the base frame, and a transmission means coupled to the base frame, the transmission means driving a transmission shaft to rotate via a power device, characterized in that:
the power device rotates at a speed of 60 rpm to 600 rpm, one end of the transmission shaft penetrates into the mixing drum, a waterproof unit is provided between the transmission shaft and the mixing drum, at least one stirring piece is provided on an outer edge of the transmission shaft in the mixing drum, the stirring piece is connected to the transmission shaft via a fixing plate, the fixing plate is formed with a non-circular transmission hole, one end of the transmission shaft penetrates into the transmission hole to be connected therein for transmitting kinetic energy, a fixing piece is provided at an end of the transmission shaft for fixation, the stirring piece is formed into a plate, an outer surface of the stirring piece relative to its rotating direction is formed into an inclined surface, the inclined surface of the stirring piece is capable of generating a centrifugal force when the stirring piece is driven by the transmission means to rotate at a high speed, thereby mixing the concrete containing gravel.
2. The centrifugal concrete mixer according to claim 1, wherein the fixing plate is formed with a plurality of penetration holes at positions corresponding to both sides of the transmission hole, a rear surface of each stirring piece is formed with a plurality of screw holes, so that the stirring piece can be fixed on the fixing plate by screws at different angular orientations.
3. The centrifugal concrete mixer according to claim 1, wherein an outer end of the stirring piece is formed with an auxiliary stirring portion for increasing the effect of mixing the concrete.
4. The centrifugal concrete mixer according to claim 1, wherein a supporting guard is provided to cover an outer edge of the bottom of the mixing drum, a bearing seat is provided between the supporting guard and an outer edge of a bottom plate of the mixing drum, the waterproof unit constituted of a first leakage-proof piece and a second leakage-proof piece is provided on inner and outer surfaces of the bottom plate respectively, the first leakage-proof piece is provided in the mixing drum, penetrated by the transmission shaft and located below the stirring piece, the second leakage-proof piece is provided on the outer surface of the bottom plate and penetrated by the transmission shaft, the underside of the second leakage-proof piece is provided with a bearing.
5. The centrifugal concrete mixer according to claim 1, wherein the fixing piece is a nut, a screw, pin bolt, machine key or a C-shaped retainer.
6. A centrifugal concrete mixer, including a base frame, a mixing drum provided on the base frame, and a transmission means coupled to the base frame, the transmission means driving a transmission shaft to rotate via a power device, characterized in that:
the power device rotates at a speed of 60 rpm to 600 rpm, one end of the transmission shaft penetrates the mixing drum, a waterproof unit is provided between the transmission shaft and the mixing drum, at least one stirring piece is provided on an outer edge of the transmission shaft in the mixing drum, the waterproof unit is hollow sleeve, one end of the waterproof unit is fixedly connected to the bottom of the mixing drum where the transmission shaft penetrates, a top end of the transmission shaft is connected to the stirring piece via a connecting piece, a center of the connecting piece is provided with a cap portion for connecting the transmission shaft, a plurality of sub-rods extend downwardly from the outer periphery of the connecting piece to the bottom of the mixing drum, the stirring piece is fixedly provided on the sub-rod, the stirring piece is formed into a plate, an outer surface of the stirring piece relative to its rotation direction is formed into an inclined surface, the inclined surface of the stirring piece is capable of generating a centrifugal force when the stirring piece is driven by the transmission means to rotate at a high speed, thereby mixing the concrete containing stones.
7. The centrifugal concrete mixer according to claim 6, wherein an outer end of the stirring piece is pivotally provided with an auxiliary stirring portion via a positioning piece, the auxiliary stirring portion erects on the stirring piece for increasing the effect of mixing the concrete, the other end of the stirring piece is provided with a sleeve for allowing the positioning piece to penetrate therein.
8. The centrifugal concrete mixer according to claim 1, wherein the power device is a motor powered by alternating current.
9. The centrifugal concrete mixer according to claim 1, wherein the power device is a motor powered by direct current of a battery.
10. The centrifugal concrete mixer according to claim 1, wherein the power device is an engine powered by gasoline or diesel.
11. The centrifugal concrete mixer according to claim 1, wherein the power device of the transmission means is fixed to a rack plate, the rack plate is fixed to the upper edge of the base frame, an outer edge of the rack plate is fixedly provided with a plurality of connecting tubes, a rotatable plate is provided on the bottom surface of the mixing drum, the rotatable plate is provided with a pivotal rod corresponding to the outer surface of the connecting pieces, the transmission shaft is divided into two sections including a primary transmission shaft and an auxiliary transmission shaft at connecting positions between the mixing drum and the base frame, a clutch constituted of a first clutch block and a second clutch block is provided between the primary transmission shaft and the second transmission shaft, the mixing drum is able to be separated from the power device, the pivotal rod of the mixing drum penetrates into the connecting tubes of the rack plate, so that the mixing drum can be put on the base frame with a 90-degree rotation for better cleaning, or be separated for transportation and storage.
12. The centrifugal concrete mixer according to claim 1, wherein the power device of the transmission means is fixed to a rack plate, the rack plate is fixed to an upper edge of the base frame, two opposite ends of one side of the rack plate are provided with a hanging post respectively, the bottom surface of the mixing drum is provided with two facing frame beams, at least one end of each frame beam is formed with a locking trough, the transmission shaft is divided into two sections including a primary transmission shaft and an auxiliary transmission shaft at connecting positions between the mixing drum and the base frame, a clutch constituted of a first clutch block and a second clutch block is provided between the primary transmission shaft and the second transmission shaft, the mixing drum is able to be separated from the power device, the locking troughs of the mixing drum are engaged with the hanging posts of the rack plate, so that the mixing drum can be put on the base frame with a 90-degree rotation for better cleaning, transportation and storage.
13. The centrifugal concrete mixer according to claim 1, wherein an upper edge of the mixing drum is provided with a cover, an outer periphery of the cover covers the edge of the mixing drum, a central region of the cover is provided with a feeding opening, a door is pivotally connected to the feeding opening for preventing mortar from spilling out of the mixing drum.
14. The centrifugal concrete mixer according to claim 6, wherein the power device is a motor powered by alternating current.
15. The centrifugal concrete mixer according to claim 6, wherein the power device is a motor powered by direct current of a battery.
17. The centrifugal concrete mixer according to claim 6, wherein the power device is an engine powered by gasoline or diesel.
18. The centrifugal concrete mixer according to claim 6, wherein the power device of the transmission means is fixed to a rack plate, the rack plate is fixed to the upper edge of the base frame, an outer edge of the rack plate is fixedly provided with a plurality of connecting tubes, a rotatable plate is provided on the bottom surface of the mixing drum, the rotatable plate is provided with a pivotal rod corresponding to the outer surface of the connecting pieces, the transmission shaft is divided into two sections including a primary transmission shaft and an auxiliary transmission shaft at connecting positions between the mixing drum and the base frame, a clutch constituted of a first clutch block and a second clutch block is provided between the primary transmission shaft and the second transmission shaft, the mixing drum is able to be separated from the power device, the pivotal rod of the mixing drum penetrates into the connecting tubes of the rack plate, so that the mixing drum can be put on the base frame with a 90-degree rotation for better cleaning, or be separated for transportation and storage.
19. The centrifugal concrete mixer according to claim 6, wherein the power device of the transmission means is fixed to a rack plate, the rack plate is fixed to an upper edge of the base frame, two opposite ends of one side of the rack plate are provided with a hanging post respectively, the bottom surface of the mixing drum is provided with two facing frame beams, at least one end of each frame beam is formed with a locking trough, the transmission shaft is divided into two sections including a primary transmission shaft and an auxiliary transmission shaft at connecting positions between the mixing drum and the base frame, a clutch constituted of a first clutch block and a second clutch block is provided between the primary transmission shaft and the second transmission shaft, the mixing drum is able to be separated from the power device, the locking troughs of the mixing drum are engaged with the hanging posts of the rack plate, so that the mixing drum can be put on the base frame with a 90-degree rotation for better cleaning, transportation and storage.
20. The centrifugal concrete mixer according to claim 6, wherein an upper edge of the mixing drum is provided with a cover, an outer periphery of the cover covers the edge of the mixing drum, a central region of the cover is provided with a feeding opening, a door is pivotally connected to the feeding opening for preventing mortar from spilling out of the mixing drum.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A radio data communication system including a router and LAN (Local Area Network) switch connected to an IP (Internet Protocol) network, said radio data communication system comprising:
a private base station transceiver subsystem for exchanging data with a mobile terminal;
a private IP exchange for performing switching between mobile terminals;
a call manager for managing a call; and
a private base station controller for providing a mobile subscriber with a complete path and assigning a vocoder in response to a request for an incoming or outgoing call to process the incoming or outgoing call, the private base station controller comprising:
a high capacity IPC (Inter-Processor Communication) node board assembly; and
an Internet interface connected between the high capacity IPC node board assembly and a LAN cable, wherein the Internet interface communicates with the private base station transceiver subsystem under the control of the call manager, transmits packet data received from the mobile terminal to the IP network, monitors installation or uninstallation and functional errors of the private IP exchange, and transmits monitoring results to a wire system manager in the call manager through an Ethernet port.
2. The radio data communication system as claimed in claim 1, wherein the Internet interface comprises:
an alarm event checker for checking functional errors of various events and storing the corresponding information;
a link address state checker for checking a link address state value of each board and storing the corresponding information;
a flash memory for storing operating and control program data according to a radio data service and an alarm function;
a static memory for storing various statistical data;
a dynamic memory for temporarily storing the program data of the flash memory and corresponding operation data;
a U-link interface connected to the high capacity IPC node board assembly, for interfacing a U-link;
an Ethernet interface connected to the LAN switch, for interfacing the Ethernet port; and
a controller for reading values of the alarm event checker and the link address state checker, transmitting the read values to the call manager through the Ethernet interface and the LAN switch, reading the control program data for radio data transmission, stored in the call manager, storing the read control program data in the flash memory, transferring the control program data to a working memory area, processing the control program data when there is data to be transmitted to the mobile terminal through the U-link interface, and transmitting the processed data to the IP network through the Ethernet interface and the LAN switch.
3. A method for communicating radio data in a radio data communication system including a router and LAN (Local Area Network) switch connected to an IP (Internet Protocol) network, a private base station transceiver subsystem for exchanging data with a mobile terminal, and a private IP exchange for performing switching between mobile terminals, a call manager for managing a call, and a private base station controller for providing a mobile subscriber with a complete path and assigning a vocoder in response to a request for an incoming or outgoing call to process the incoming or outgoing call, the method comprising the steps of:
performing off-line booting by a booting ROM (Read Only Memory) in an Internet interface included in the private base station controller;
setting a medium access control and IP address, downloading a program from the call manager and storing the downloaded program in a first memory;
on-line booting an on-line package stored in the first memory to a second memory; and
informing the IP network that the call manager is on-line booted, and transmitting the radio data of the mobile terminal, received by the on-line package.