CN211624019U - Hydraulic system for automatic braking of AGV - Google Patents
Hydraulic system for automatic braking of AGV Download PDFInfo
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- CN211624019U CN211624019U CN201922140555.7U CN201922140555U CN211624019U CN 211624019 U CN211624019 U CN 211624019U CN 201922140555 U CN201922140555 U CN 201922140555U CN 211624019 U CN211624019 U CN 211624019U
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Abstract
The utility model discloses a hydraulic system for AGV automatic braking, including hydraulic control system and brake arresting gear. The hydraulic control system comprises an oil tank, a motor, a gear pump, a valve, a pressure measuring tool, a pressure sensor and a pipeline. The brake device comprises a brake disc, a wheel flange, brake calipers, a bridge and a mounting bracket. The pressure sensor feeds back the current state to the hydraulic control system, and then the hydraulic control system controls the pressure flow of oil in the pipeline through the valve, so that the brake caliper clamps the brake disc, and finally the functions of emergency braking, speed reduction, turning and the like of the AGV in a high-speed state are realized. The utility model discloses can enough satisfy AGV at the in-process speed of a motor vehicle of adjusting, accomplish parking braking, can ensure again that AGV braking stops under emergency and can not lead to goods shelves probably to empty or unstability in the time.
Description
Technical Field
The patent of the utility model belongs to industrial vehicle transportation field, concretely relates to hydraulic brake braking system suitable for outdoor high-speed heavy load commodity circulation transportation AGV.
Background
The AGV braking system is used for regulating the speed of the vehicle during running and completing a parking braking process. The braking system of the AGV should be able to keep the AGV at a specified working slope without slipping at maximum load, and the braking system should be able to stop the AGV in an emergency, taking into account load, speed, friction, slope and wear. However, at present, domestic AGV generally does not adopt a hydraulic braking mode, mostly adopts a motor internal contracting brake, and cannot meet the action requirement and the braking requirement; the utility model discloses a can enough satisfy AGV in the in-process speed of a motor vehicle of adjusting, accomplish the function of parking braking, can ensure AGV safety braking under the high-speed heavy load condition again.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a for solve present internal AGV braking system operating condition unsatisfactory, can't reach the problem that safety and function required, provide a hydraulic system for AGV automatic braking.
The utility model discloses a technical scheme is:
a hydraulic system for automatic braking of an AGV comprises a hydraulic control system and a brake braking device; in the hydraulic control system, an oil inlet of a gear pump is connected with an oil outlet of an oil tank, an oil absorption filter screen is arranged between the gear pump and the oil outlet of the oil tank, a motor is installed on the gear pump, the oil outlet of the gear pump is connected with an oil inlet of a one-way valve, and the oil outlet of the one-way valve is connected with oil inlet ends of a proportional flow valve, an overflow valve, an energy accumulator, a pressure sensor; an oil outlet of the proportional flow valve is connected with an oil inlet of an electromagnetic directional valve, and oil outlets of the electromagnetic directional valve are respectively connected with a brake caliper piston and a throttle valve oil inlet; the oil outlet of the overflow valve and the throttle valve is connected with an oil tank; the pressure measuring joint is connected with a pressure measuring tool.
The brake device comprises a brake disc, a wheel flange, brake calipers, a bridge and a mounting bracket. Brake caliper installs on the bridge sign indicating number, and on the bridge sign indicating number was fixed in the installing support, wheel flange and brake dish fixed connection, the brake dish inlays in brake caliper friction disc. The hydraulic control system applies pressure oil to the brake calipers, and the brake calipers clamp the brake disc. And the hydraulic control system is connected with a brake caliper in the brake device through an oil way.
Furthermore, the electric signal of the pressure sensor feeds back the system pressure to the control system, and the hydraulic control system controls the pressure flow of the oil in the pipeline through a proportional flow valve.
The utility model discloses a theory of operation is:
when the work braking is needed, the motor is electrified to drive the gear pump gear to rotate to supply oil to the system, and as the pressure boosting process of the system needs a certain time, the oil storage tank in the energy accumulator can quickly release hydraulic oil, so that the oil pressure of the system is quickly increased; when the power supply voltage of the electromagnetic proportional flow valve is gradually increased from zero to the maximum working voltage, the electromagnetic directional valve is electrified to be positioned at the left position, and the oil pressure of the pipeline is directly communicated to a hydraulic cylinder of the brake caliper. Along with the increase of the oil pressure, the brake disc is clamped by the brake calipers, and after the pressure of the hydraulic cylinder is increased to the maximum working pressure set by the electromagnetic proportional overflow valve, the brake calipers complete closing.
In the brake actuating apparatus: brake caliper installs on the bridge sign indicating number, and on the bridge sign indicating number was fixed in the installing support, wheel flange and brake dish fixed connection, the brake dish inlays in brake caliper friction disc. The hydraulic control system applies pressure oil to the brake calipers, and the brake calipers clamp the brake disc.
The utility model discloses a beneficial effect is:
the utility model discloses a can enough satisfy AGV in the in-process speed of a motor vehicle of adjusting, accomplish the function of parking braking, can ensure AGV safety braking under the high-speed heavy load condition again.
Drawings
FIG. 1 is a hydraulic schematic diagram of a hydraulic system for AGV automatic braking according to the present invention;
FIG. 2 is a schematic position diagram of a hydraulic system for AGV automatic braking according to the present invention;
FIG. 3 is a structural diagram of a brake device of a hydraulic system for AGV automatic braking according to the present invention;
reference numerals in the drawings: oil absorption filter screen: 1; gear pump: 2; a motor: 3; a one-way valve: 4; an overflow valve: 5; a throttle valve: 6; pressure measuring joint: 7; an energy accumulator: 8; proportional flow valve: 9; an electromagnetic directional valve: 10; an oil tank: 11; a pressure measuring tool: 12; a pressure sensor: 13; a brake braking device: 2-1; a hydraulic control system: 2-2; braking the disc: 3-1; wheel flange: 3-2; brake calipers: 3-3; bridge code: 3-4; installing a support: 3-5.
The specific implementation mode is as follows:
the following describes the present invention with reference to the accompanying drawings.
As shown in FIG. 2, the hydraulic system for automatic braking of an AGV comprises a hydraulic control system 2-2 and a brake braking device 2-1; the hydraulic control system 2-2 is connected with the brake device 2-1 through an oil way.
As shown in fig. 1, in the hydraulic control system 2-2, an oil inlet of a gear pump 2 is connected with an oil outlet of an oil tank 11, an oil suction filter screen 1 is arranged between the oil inlet and the oil outlet, a motor 3 is installed on the gear pump 2, the oil outlet of the gear pump 2 is connected with an oil inlet of a check valve 4, and the oil outlet of the check valve 4 is connected with oil inlet ends of a proportional flow valve 9, an overflow valve 5, an energy accumulator 8, a pressure sensor 13 and a pressure measuring joint 7; an oil outlet of the proportional flow valve 9 is connected with an oil inlet of an electromagnetic directional valve 10, and an oil outlet of the electromagnetic directional valve 10 is respectively connected with oil inlets of pistons of the brake calipers 3-3 and the throttle valve 6; the oil outlets of the overflow valve 5 and the throttle valve 6 are connected with an oil tank; the pressure measuring connector 7 is connected with a pressure measuring tool 12.
As shown in fig. 3, the brake device 2-1 comprises a brake disc 3-1, a wheel flange 3-2, a brake caliper 3-3, a bridge 3-4 and a mounting bracket 3-5; the brake caliper 3-3 is installed on the bridge code 3-4, the bridge code 3-4 is fixed on the installation support 3-5, the wheel flange 3-2 is fixedly connected with the brake disc 3-1, and the brake disc 3-1 is embedded in the friction plate of the brake caliper 3-3. The hydraulic control system 2-2 applies pressure oil to the brake calipers 3-3, and the brake calipers 3-3 clamp the brake disc 3-1.
The hydraulic control system 2-2 is connected with a brake caliper 3-3 in the brake device 2-1 through an oil way.
Further, as shown in fig. 1, the electrical signal of the pressure sensor 13 feeds back the system pressure to the hydraulic control system 2-2, and the hydraulic control system 2-2 controls the pressure flow of the oil in the pipeline through the proportional flow valve 9.
Further, as shown in fig. 1, a load cell 12 electrically connected to a pressure sensor 13 is further included.
Principle of brake operation
When the work braking is needed, the motor 3 is electrified to drive the gear pump 2 to rotate to supply oil to the system, and as the pressure boosting process of the system needs a certain time, the oil storage tank in the energy accumulator 8 can quickly release hydraulic oil, so that the oil pressure of the system is quickly increased; when the power supply voltage of the electromagnetic proportional flow valve 9 is gradually increased from zero to the maximum working voltage, the electromagnetic directional valve 10 is electrified to be in the left position, and the oil pressure of a pipeline is directly communicated to the hydraulic cylinder of the brake caliper 3-3. Along with the increase of the oil pressure, the brake caliper 3-3 clamps the brake disc 3-1, and after the pressure of the hydraulic cylinder is increased to the maximum working pressure set by the electromagnetic proportional overflow valve 5, the brake caliper 3-3 completes the closing.
Working principle of brake caliper
The brake caliper 3-3 plays a role of an actuating mechanism in a hydraulic system, and mainly completes the opening and closing actions of the brake. In the process of closing and braking, the hydraulic control system 2-2 charges oil to the hydraulic cylinder of the brake caliper 3-3, and the oil pressure pushes the piston to enable the friction plate of the brake caliper 3-3 to clamp the brake disc 3-1, so that closing is completed. In the process of opening the brake, the oil pressure in the hydraulic cylinder is reduced, and part of oil in the hydraulic cylinder flows back to the oil tank to complete the opening of the brake.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions are covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (2)
1. A hydraulic system for automatic braking of an AGV, comprising a hydraulic control system (2-2) and a brake actuating device (2-1), characterized in that:
in the hydraulic control system (2-2), an oil inlet of a gear pump (2) is connected with an oil outlet of an oil tank (11), an oil absorption filter screen (1) is arranged between the oil inlet and the oil outlet, a motor (3) is installed on the gear pump (2), the oil outlet of the gear pump (2) is connected with an oil inlet of a one-way valve (4), and the oil outlet of the one-way valve (4) is respectively connected with oil inlet ends of a proportional flow valve (9), an overflow valve (5), an energy accumulator (8), a pressure sensor (13) and a pressure measuring joint (7); an oil outlet of the proportional flow valve (9) is connected to an oil inlet of the electromagnetic directional valve (10), and oil outlets of the electromagnetic directional valve (10) are respectively connected to oil inlets of a piston of the brake caliper (3-3) and a throttle valve (6); the oil outlets of the overflow valve (5) and the throttle valve (6) are connected with an oil tank; the pressure measuring joint (7) is connected with a pressure measuring tool (12);
the brake device (2-1) comprises a brake disc (3-1), a wheel flange (3-2), brake calipers (3-3), bridge codes (3-4) and a mounting bracket (3-5); the brake caliper (3-3) is arranged on the bridge code (3-4), the bridge code (3-4) is fixed on the mounting bracket (3-5), the wheel flange (3-2) is fixedly connected with the brake disc (3-1), and the brake disc (3-1) is embedded in the friction plate of the brake caliper (3-3); the hydraulic control system (2-2) applies pressure oil to the brake calipers (3-3), and the brake calipers (3-3) clamp the brake disc (3-1);
the hydraulic control system (2-2) is connected with a brake caliper (3-3) in the brake device (2-1) through an oil way.
2. The hydraulic system for automatic braking of an AGV according to claim 1, further comprising:
the electric signal of the pressure sensor (13) feeds back the system pressure to the hydraulic control system (2-2), hydraulic oil is transmitted to the proportional flow valve (9) through the one-way valve (4), and the hydraulic control system (2-2) changes the opening of the proportional flow valve (9) according to the input electric signal to adjust the flow of the hydraulic oil; the regulated hydraulic oil flows through the left position of the electromagnetic directional valve (10), and the brake calipers (3-3) are filled with the hydraulic oil finally, so that brake is realized; the overflow valve (5) and the throttle valve (6) are connected in parallel on an oil return path, the electromagnetic directional valve (10) is in the right position in the normal running process of the AGV, and hydraulic oil in the brake calipers (3-3) flows back to the oil tank (11) through the throttle valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922140555.7U CN211624019U (en) | 2019-12-04 | 2019-12-04 | Hydraulic system for automatic braking of AGV |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922140555.7U CN211624019U (en) | 2019-12-04 | 2019-12-04 | Hydraulic system for automatic braking of AGV |
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| CN211624019U true CN211624019U (en) | 2020-10-02 |
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| CN201922140555.7U Active CN211624019U (en) | 2019-12-04 | 2019-12-04 | Hydraulic system for automatic braking of AGV |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373452A (en) * | 2020-11-24 | 2021-02-19 | 湖北塞弗精工科技有限公司 | Hydraulic braking device |
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2019
- 2019-12-04 CN CN201922140555.7U patent/CN211624019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373452A (en) * | 2020-11-24 | 2021-02-19 | 湖北塞弗精工科技有限公司 | Hydraulic braking device |
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