CN219361026U - Hydraulic walking brake with pressure compensating device - Google Patents
Hydraulic walking brake with pressure compensating device Download PDFInfo
- Publication number
- CN219361026U CN219361026U CN202320152022.4U CN202320152022U CN219361026U CN 219361026 U CN219361026 U CN 219361026U CN 202320152022 U CN202320152022 U CN 202320152022U CN 219361026 U CN219361026 U CN 219361026U
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- brake
- oil way
- speed reducer
- pressure
- electromagnetic valve
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Abstract
The utility model provides a hydraulic walking brake with a pressure supplementing device, which comprises an electromagnetic valve Y1, a brake assembly, a brake oil way, a pilot pump, a pilot control oil way, an energy accumulator and a pressure switch, wherein the electromagnetic valve Y1 is arranged on the brake assembly; the brake assembly comprises a brake spring and a brake pad; the pilot control oil way is connected with the pilot pump and the electromagnetic valve Y1, and an energy accumulator is arranged in the pilot control oil way; the brake oil way is connected with the electromagnetic valve Y1 and the brake assembly; the brake oil way is provided with a pressure switch. When a running instruction occurs, the electromagnetic valve Y1 is electrified, the pilot control oil way is communicated with the brake oil way, the energy accumulator enables the brake oil way to rapidly build pressure on the brake assembly, the brake assembly releases running brake on the speed reducer, and then the main pump and the main oil way control valve are controlled to be opened, and the motor outputs torque to the speed reducer. The utility model is beneficial to improving the response speed of releasing the walking brake, effectively solving the problem of pressure holding of a main oil way and improving the walking reliability of a speed reducer brake and the whole machine.
Description
Technical Field
The utility model relates to a hydraulic motor driven crawler-type walking machinery walking brake releasing design, in particular to a hydraulic walking brake with a pressure supplementing device.
Background
In the field of crawler-type walking machinery, a hydraulic motor and a speed reducer are generally adopted as an execution device for mechanical walking. Particularly, a large crawler crane has a large running driving force demand because of heavy weight and possibly carrying running, and generally adopts a plurality of hydraulic motors and a speed reducer with a large reduction ratio to be used together as a running executing mechanism. In the running process of the large crawler crane, because the pipeline is longer, after the operating handle gives a running instruction, the high-pressure oil port of the motor can build pressure relatively quickly, and the building time for releasing the pressure of the brake pipeline is longer, so that the motor starts to output torque, but the brake is not opened. On the one hand, the state can lead to the pressure of the main walking oil way, and on the other hand, the torque output by the motor acts on the brake of the speed reducer, so that the speed reducer is easy to damage.
Disclosure of Invention
The utility model aims at: the utility model provides a hydraulic traveling brake with a pressure supplementing device, which is used for realizing that after a traveling instruction is sent, the traveling brake releases braking on a speed reducer, then a main oil way control valve is opened, and a motor outputs torque to the speed reducer.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a hydraulic walking brake with a pressure supplementing device comprises an electromagnetic valve Y1, a brake assembly, a brake oil way, a pilot pump, a pilot control oil way and an energy accumulator; the pilot control oil way is connected with the pilot pump and the electromagnetic valve Y1, and the brake oil way is connected with the electromagnetic valve Y1 and the brake assembly; the electromagnetic valve Y1 is used for realizing the connection and disconnection between the pilot control oil way and the brake oil way; the energy accumulator is arranged in the pilot control oil way and used for reducing the pressure building time of the brake oil way to the brake assembly; based on the running instruction, the electromagnetic valve Y1 is electrified, the pilot control oil way is communicated with the brake oil way, the brake oil way builds pressure at the brake assembly under the action of the energy accumulator, the brake assembly releases running brake of the speed reducer, the main pump is started, the main oil way control valve is opened, and the motor outputs torque to the speed reducer.
Further, the hydraulic traveling brake further comprises a pressure switch, wherein the pressure switch is arranged in the brake oil path and is used for realizing the continuity between the braking release of the traveling brake on the speed reducer and the torque output of the motor to the speed reducer; based on the pressure of the brake oil circuit to the brake component reaches a preset pressure value, the pressure switch sends out a signal, then the main pump is started, and the motor outputs torque to the speed reducer.
Further, the braking assembly comprises a braking spring and a braking plate, when the walking brake brakes, the braking oil circuit does not have oil pressure on the braking spring, the braking spring is in an extension state, and the braking plate contacts with the speed reducer for braking; when the traveling brake releases the brake, the brake oil way builds pressure on the brake spring, the brake spring is compressed, and the brake pad is driven to be separated from the speed reducer, so that the brake release is realized.
Compared with the prior art, the hydraulic traveling brake with the pressure supplementing device has the following technical effects:
(1) According to the utility model, the accumulator is additionally arranged on the pilot control oil way, so that the pressure building time of the brake oil way is greatly shortened, the traveling brake release response speed is improved, and the problem of pressure holding of the main oil way is effectively solved;
(2) The utility model adopts the pressure switch to connect the braking of the walking brake to the speed reducer and the driving of the motor to the speed reducer, thereby improving the walking reliability of the speed reducer brake and the whole machine.
Drawings
FIG. 1 is a schematic illustration of a hydraulic travel brake having a pressure compensating device; the solid line in the drawing indicates the motor oil supply main passage, the long-dashed line indicates the pilot control passage and the brake passage, and the long-dashed line indicates the element division frame.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
Aspects of the utility model are described herein with reference to the drawings, in which there are shown many illustrative embodiments. The embodiments of the present utility model are not limited to the embodiments described in the drawings. It is to be understood that this utility model is capable of being carried out by any of the various concepts and embodiments described above and as such described in detail below, since the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the disclosure may be used alone or in any suitable combination with other aspects of the disclosure.
In this embodiment, as shown in fig. 1, a hydraulic traveling brake including a pressure compensating device includes a solenoid valve Y1, a brake assembly, a brake oil passage, a pilot pump, a pilot control oil passage, an accumulator, and a pressure switch; the brake assembly comprises a brake spring and a brake pad; the pilot control oil way is connected with the pilot pump and the electromagnetic valve Y1, and an energy accumulator is arranged in the pilot control oil way and used for reducing the pressure building time of the brake oil way to the brake assembly; the brake oil way is connected with the electromagnetic valve Y1 and the brake assembly; and a pressure switch is arranged in the brake oil circuit and used for detecting the pressure of the brake oil circuit to the brake assembly.
When a walking instruction occurs, the control system firstly controls the electromagnetic valve Y1 to be electrified, the P end of the electromagnetic valve Y1 is communicated with the B end, namely, the pilot control oil way is communicated with the brake oil way, under the action of the energy accumulator, the brake oil way rapidly builds pressure on the brake assembly, the brake spring is compressed, the brake plate is driven to be separated from the speed reducer, and the brake assembly releases the walking brake of the speed reducer; then, the control system controls the main pump to be started, hydraulic oil is output, the main oil way control valve is opened, the hydraulic oil reaches the M/N oil port through the main oil way control valve, and the motor outputs torque to the speed reducer, so that the walking machine is driven to walk.
When the walking stop instruction occurs, the control system firstly controls the main pump to be closed, the main oil way control valve is disconnected, the oil supply of the M/N oil port is cut off, then the electromagnetic valve Y1 is powered off, the P end of the electromagnetic valve Y1 is connected with the A end, the T end of the electromagnetic valve Y1 is connected with the B end, the pilot control oil way and the brake oil way are disconnected, the brake oil way has no oil pressure to the brake spring, the brake spring stretches, and the brake pad is driven to brake the speed reducer.
While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (3)
1. The hydraulic traveling brake with the pressure compensating device is used for realizing that after the traveling brake releases the braking of the speed reducer, a main oil way control valve is opened, and a motor starts to output torque to the speed reducer; the hydraulic control system is characterized by comprising an electromagnetic valve Y1, a brake assembly, a brake oil way, a pilot pump, a pilot control oil way and an energy accumulator; the pilot control oil way is connected with the pilot pump and the electromagnetic valve Y1, and the brake oil way is connected with the electromagnetic valve Y1 and the brake assembly; the electromagnetic valve Y1 is used for realizing the connection and disconnection between the pilot control oil way and the brake oil way; the energy accumulator is arranged in the pilot control oil way and used for reducing the pressure building time of the brake oil way to the brake assembly;
based on the running instruction, the electromagnetic valve Y1 is electrified, the pilot control oil way is communicated with the brake oil way, the brake oil way builds pressure at the brake assembly under the action of the energy accumulator, the brake assembly releases running brake of the speed reducer, the main pump is started, the main oil way control valve is opened, and the motor outputs torque to the speed reducer.
2. The hydraulic traveling brake with the pressure compensating device according to claim 1, further comprising a pressure switch provided in the brake oil passage for realizing continuity between the traveling brake releasing the brake to the speed reducer and the motor outputting the torque to the speed reducer; based on the fact that the pressure of the brake oil circuit to the brake assembly reaches a preset pressure value, the pressure switch sends out a signal, then the main pump is controlled to be started, the main oil circuit control valve is opened, and the motor outputs torque to the speed reducer.
3. The hydraulic travel brake with pressure compensating means of claim 1 wherein the brake assembly comprises a brake spring and a brake pad, the brake fluid path being free of oil pressure to the brake spring when the travel brake is braked, the brake spring being in an extended state, the brake pad being in contact with the speed reducer for braking; when the traveling brake releases the brake, the brake oil way builds pressure on the brake spring, the brake spring is compressed, and the brake pad is driven to be separated from the speed reducer, so that the brake release is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320152022.4U CN219361026U (en) | 2023-02-08 | 2023-02-08 | Hydraulic walking brake with pressure compensating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320152022.4U CN219361026U (en) | 2023-02-08 | 2023-02-08 | Hydraulic walking brake with pressure compensating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219361026U true CN219361026U (en) | 2023-07-18 |
Family
ID=87150806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320152022.4U Active CN219361026U (en) | 2023-02-08 | 2023-02-08 | Hydraulic walking brake with pressure compensating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219361026U (en) |
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2023
- 2023-02-08 CN CN202320152022.4U patent/CN219361026U/en active Active
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