1. A sensor head that applies a light beam from a light emitting element to an object to be measured and detects a light beam reflected by the object by using a light receiving element so as to acquire information on physical quantities of the object to be measured, characterized in that said sensor head comprises: a first substrate provided with said light emitting element and said light receiving element; an optical structure body formed in one piece on a second substrate, said optical structure body having a plurality of optical elements intended for converging incident light in a parallel direction to a surface of the second substrate, for converging an outgoing beam from said light emitting element and a light beam reflected by said object to be measured in the parallel direction to the surface of the second substrate; and lenses intended for converging incident light in a perpendicular direction to the surface of the second substrate, for converging the outgoing beam from said light emitting element and the light beam reflected by said object to be measured in the perpendicular direction to the surface of the second substrate, respectively.
2. The sensor head according to claim 1, characterized in that the first substrate is combined with the optical structure body formed on the second substrate by way of at least two microspheres.
3. The sensor head according to claim 1, characterized in that the light emitting element is disposed on a movable plate formed on the first substrate.
4. The sensor head according to claim 1, characterized in that the functionality of the first substrate is provided for the optical structure body and the light emitting element and the light receiving element are directly disposed on the optical structure body.
5. The sensor head according to claim 1, characterized in that a mold insert used for molding the optical structure body with a resin and a mold insert used for molding the lenses intended for converging incident light in the perpendicular direction to the surface of the second substrate with a resin are combined and the optical structure body and the lenses intended for converging incident light in the perpendicular direction to the second substrate are molded in one piece.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A brake-operating assembly for a machine comprising:
a first and a second brake pedal which are interconnected with one another, and a first valve element which, is connected to the first brake pedal and is arranged so as to control the flow of hydraulic fluid from a pressure source to brake cylinders of the machine, wherein a second valve element is connected to the second brake pedal and is a arranged so as to control the flow of hydraulic fluid from the pressure source to the brake cylinders of the machine, and in that the connection between the first and the second brake pedal consists of at least one connecting line for hydraulic fluid arranged between the first and the second valve element.
2. The brake-operating assembly as recited in claim 1, wherein a shuttle valve is arranged in the connecting line, which shuttle valve closes the connection between the second valve element and the brake cylinders when the first valve element is activated by the first brake pedal.
3. The brake-operating assembly as recited in claim 1, wherein a shuttle valve is arranged in a first brake line that is connected to the brake cylinders that are located on a first wheel axle of the machine.
4. The brake-operating assembly as recited in claim 1, wherein the first valve element comprises a first and a second slide valve which are arranged in such a manner that the first slide valve controls the second slide valve when the first slide valve is activated by the first brake pedal.
5. The brake-operating assembly as recited in claim 4, wherein the first slide valve is connected to the shuttle valve, and in that the second slide valve is connected via a second brake line to the brake cylinders which are located on a second wheel axle of the machine.
6. The brake-operating assembly as recited in claim 1, wherein a pilot line for hydraulic fluid is arranged between the first and the second valve element so that when the second valve element is activated by the second brake pedal, the first valve element will be activated by the hydraulic fluid in the pilot line.
7. A brake-operating assembly for a machine, said assembly comprising:
a first second brake pedal and a second brake pedal that are interconnected with one another;
a first valve element connected to the first brake pedal and arranged to control flow of hydraulic fluid from a pressure source to brake cylinders of the machine;
a second valve element connected to the second brake pedal and arranged to control flow of hydraulic fluid from the pressure source to the brake cylinders of the machine; and
the interconnection between the first and the second brake pedals comprising at least one connecting line arranged between the first and the second valve element for hydraulic fluid.
8. The brake-operating assembly as recited in claim 7, further comprising:
a shuttle valve arranged in the connecting line, said shuttle valve being adapted to close the connection between the second valve element and the brake cylinders when the first valve element is activated by the first brake pedal.
9. The brake-operating assembly as recited in claim 8, wherein the shuttle valve is arranged in a first brake line that is connected to the brake cylinders which are located on a first wheel axle of the machine.
10. The brake-operating assembly as recited in claim 7, wherein the first valve element comprises a first and a second slide valve, each of which are arranged so that the first slide valve controls the second slide valve when the first slide valve is activated by the first brake pedal.
11. The brake-operating assembly as recited in claim 10, wherein the first slide valve is connected to the shuttle valve and the second slide valve is connected via a second brake line to the brake cylinders, said brake cylinders being located on a second wheel axle of the machine.
12. The brake-operating assembly as recited in claim 7, further comprising:
a pilot line for hydraulic fluid arranged between the first and the second valve elements and adapted so that when the second valve element is activated by the second brake pedal, the first valve element will be activated by the hydraulic fluid in the pilot line.
13. A brake-operating assembly for a machine, said assembly comprising:
a first brake pedal and a second brake pedal arranged in an operator foot-space on a contractor’s machine;
a first valve means for controlling flow of hydraulic fluid through a first conduit from a pressure source to a brake cylinder of the machine in responsive to manipulation of the first brake pedal;
a second valve means for controlling flow of hydraulic fluid through a second conduit from the pressure source to a brake cylinder of the machine in responsive to manipulation of the second brake pedal; and
an isolation means for permitting only one of the first and second brake pedals to control flow of hydraulic fluid from the pressure source to a brake cylinder of the machine at any one time.
14. The brake-operating assembly as recited in claim 13, said isolation means further comprising:
a shuttle valve means for precluding one of the first and second valve means from influencing a brake cylinders when the other valve means is activated.
15. The brake-operating assembly as recited in claim 14, wherein the first valve means further comprises a first and a second slide valve arranged so that the first slide valve controls the second slide valve when the first slide valve is activated by the first brake pedal.
16. The brake-operating assembly as recited in claim 15, wherein the first slide valve is connected to the shuttle valve and the second slide valve is fluidly connected, via a second brake line, to brake cylinders.
17. The brake-operating assembly as recited in claim 13, further comprising:
a pilot line for hydraulic fluid arranged between the first and the second valve means, the pilot line being adapted so that when the second valve element is activated by the second brake pedal, the first valve element will be activated by the hydraulic fluid in the pilot line.