CN117167419A - Hydraulic driving device with brake release function - Google Patents
Hydraulic driving device with brake release function Download PDFInfo
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- CN117167419A CN117167419A CN202311144227.9A CN202311144227A CN117167419A CN 117167419 A CN117167419 A CN 117167419A CN 202311144227 A CN202311144227 A CN 202311144227A CN 117167419 A CN117167419 A CN 117167419A
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- brake
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- 239000003921 oil Substances 0.000 claims abstract description 278
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic driving device with a brake release function, which comprises: the hydraulic control system comprises a balance valve, a hydraulic control valve, a signal oil port, a brake release oil port, a brake assembly, a cylinder assembly, a variable piston, a shuttle valve, a variable control valve, a pilot oil port, a throttle oil nozzle and an oil inlet and outlet; the balance valve comprises a balance valve, wherein one end of the balance valve is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet comprise an oil inlet A and an oil outlet B, and the oil inlet A and the oil outlet B are not fixed; the hydraulic oil is respectively output to the hydraulic control valve and the brake assembly along the oil path through the signal oil port and the brake oil port, so that the hydraulic control valve and the brake assembly can normally supply oil, and the hydraulic driving device can also operate.
Description
Technical Field
The invention relates to the technical field of hydraulic driving, in particular to a hydraulic driving device with a brake releasing function.
Background
In the field of construction machinery, in order to provide a product with a reliability that can be stopped, a hydraulic brake and a parking brake are provided in a hydraulic driving device to ensure that a landslide phenomenon does not occur when the device is operated, but when a problem occurs in a hydraulic system of the device, the device cannot be operated.
When the equipment works under a mine, the engineering progress is affected once the equipment cannot be used due to the narrow space, and when the equipment has a problem, hydraulic oil in the hydraulic driving device continuously flows out of an outlet to form hydraulic braking and parking braking, and if the hydraulic braking and the parking braking are not released first, the equipment is pulled away forcefully, so that the phenomenon of damage to internal parts of the hydraulic driving device is caused;
the prior art can not meet the demands of people at present, and based on the present situation, the prior art needs to be improved.
Disclosure of Invention
The present invention is directed to a hydraulic driving device with brake release function, so as to solve the above-mentioned problems in the prior art.
The invention provides a hydraulic driving device with a brake release function, which comprises the following technical scheme: the hydraulic control system comprises a balance valve, a hydraulic control valve, a signal oil port, a brake release oil port, a brake assembly, a cylinder assembly, a variable piston, a shuttle valve, a variable control valve, a pilot oil port, a throttle oil nozzle and an oil inlet and outlet;
the balance valve comprises a balance valve, wherein one end of the balance valve is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet comprise an oil inlet A and an oil outlet B, and the oil inlet A and the oil outlet B are not fixed;
one oil path of the oil port A is connected to the balance valve through the throttling oil nozzle, and the other oil path of the oil port A comprises: the hydraulic control system comprises a first oil way and a second oil way, wherein the first oil way is connected to a cylinder body assembly, and the second oil way is connected with a hydraulic control valve and then a brake assembly;
the pilot operated valve includes: the hydraulic control valve comprises a first oil duct, a second oil duct, a third oil duct, a spring and a hydraulic control valve core, wherein a control oil port for releasing braking is formed in one side of the hydraulic control valve, and the control oil port comprises: the hydraulic control valve comprises a signal oil port and a brake release oil port, wherein the signal oil port and the brake release oil port are both of a structure with a wide outer end and a narrow inner end, a hydraulic control valve core is arranged in the middle of the hydraulic control valve, an oil inlet control end is arranged on the upper right side of the hydraulic control valve core, and the oil inlet control end is connected with the inner end of the signal oil port; the bottom of the hydraulic control valve core is sequentially provided with a first oil duct, a second oil duct and a third oil duct, the first oil duct, the second oil duct and the third oil duct are all connected to the balance valve, the inner end of the brake release oil port is connected with the corresponding position of the middle part of the fourth oil duct, one port of the fourth oil duct is connected with the second oil duct in the hydraulic control valve, and the other port of the fourth oil duct is connected with the brake assembly;
the outer side of the hydraulic driving device is also provided with a pilot oil port, the other end of the pilot oil port is connected with a variable hydraulic control valve, the bottom of the variable hydraulic control valve is provided with an oil path which is connected with an oil path of a shuttle valve, and the bottom of the shuttle valve is provided with an output oil path which is connected to a variable piston;
the hydraulic oil is respectively output to the hydraulic control valve and the brake assembly along the oil path through the signal oil port and the brake oil port, so that the hydraulic control valve and the brake assembly can normally supply oil, and the hydraulic driving device can also operate.
Drawings
FIG. 1 is a schematic diagram of the overall hydraulic architecture of the present invention;
FIG. 2 is a schematic cross-sectional view of a pilot operated valve of the present invention;
FIG. 3 is a schematic cross-sectional view of a fourth oil passage and second oil passage connection structure according to the present invention;
FIG. 4 is a schematic diagram of the direction of the oil path flow when the oil port A is used as an oil inlet and the oil port B is used as an oil outlet;
FIG. 5 is a schematic diagram of the direction of the oil path flow when the oil port B is used as an oil inlet and the oil port A is used as an oil outlet;
fig. 6 is a schematic view showing the direction in which hydraulic oil flows from the signal port and the release brake port when the hydraulic brake is released and the parking brake is released according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the present invention without making any inventive effort fall within the scope of the present invention.
Referring to fig. 1, the invention provides a hydraulic driving device with a brake release function, which comprises a balance valve 1, a hydraulic control valve 2, a signal oil port 3, a brake release oil port 4, a brake assembly 5, a cylinder assembly 6, a variable piston 7, a shuttle valve 8, a variable control valve 9, a pilot oil port 10, a throttle oil port 11 and an oil inlet and outlet port 12; wherein, the one end of balanced valve 1 is equipped with business turn over hydraulic fluid port 12, wherein, business turn over hydraulic fluid port 12 includes hydraulic fluid port A and hydraulic fluid port B, and which is not fixed as oil inlet or oil-out, and when hydraulic drive device forward rotation, hydraulic fluid port A is as oil inlet and hydraulic fluid port B is as the oil-out, and when hydraulic drive device reverse rotation, hydraulic fluid port B is as oil inlet and hydraulic fluid port A is as the oil-out.
Referring to fig. 4, the forward rotation of the hydraulic driving device is the same as the reverse rotation thereof, except that the paths of the hydraulic oil output and the return oil paths are different, taking the forward rotation of the hydraulic driving device as an example, when the oil port a is taken as the oil inlet, according to the arrow direction of the oil path flow in fig. 4, the oil port a has two paths of oil path output, wherein one path of the oil port a is connected to the balance valve 1 through the throttle oil nozzle 11, and the other path of the oil port a further includes: the first oil way and the second oil way, wherein the first oil way is connected to the cylinder body assembly 6, and the second oil way is firstly connected with the hydraulic control valve 2 and then connected with the brake assembly 5; in the embodiment, when hydraulic oil enters the balance valve 1 of the hydraulic driving device from the oil port A through the throttling oil nozzle 11, the valve in the balance valve 1 is pushed to the other side, so that an oil path is divided into two paths for output, wherein the hydraulic oil output by the first path of oil path is split into the cylinder assembly 6, so that a pressure difference is generated inside the cylinder, and the cylinder assembly 6 rotates to provide power for the hydraulic driving device; the hydraulic oil output by the second oil path enters the hydraulic control valve 2 through the oil passage, and the purpose of releasing the parking brake can be achieved after the oil passage in the hydraulic control valve 2 is communicated with the brake assembly 5, wherein the specific communication mode of the oil passage in the hydraulic control valve 2 and the brake assembly 5 is described in detail in the embodiment of the hydraulic control valve 2.
Referring to fig. 5, in the embodiment, the working principle of forward rotation of the hydraulic driving device is the same as that of reverse rotation of the hydraulic driving device, except that the oil path of the hydraulic oil output and return flow is different, and according to the arrow direction of the oil path flow in fig. 5, when the oil port B is used as the oil inlet, the oil path of the hydraulic oil output and return flow forms an oil path circulation in the hydraulic driving device, which will not be described in detail.
Referring to fig. 2 and 3, the pilot operated valve 2 includes: the hydraulic control valve comprises a first oil duct 13, a second oil duct 14, a third oil duct 15, a spring 16 and a hydraulic control valve core 17, wherein a control oil port for releasing braking is arranged on one side of the hydraulic control valve 2, and the control oil port comprises: the hydraulic control valve comprises a signal oil port 3 and a release brake oil port 4, wherein the signal oil port 3 and the release brake oil port 4 are both of a structure with a wide outer end and a narrow inner end, a hydraulic control valve core 17 is arranged in the middle of the hydraulic control valve 2, an oil inlet control end is arranged on the upper right side of the hydraulic control valve core 17, and the oil inlet control end is connected with the inner end of the signal oil port 3; the bottom of the hydraulic control valve core 17 is sequentially provided with a first oil duct 13, a second oil duct 14 and a third oil duct 15, the first oil duct 13, the second oil duct 14 and the third oil duct 15 are all connected to the balance valve 1, the inner end of the brake release oil port 4 is connected with the corresponding position of the middle part of the fourth oil duct 18, one port of the fourth oil duct 18 is connected with the second oil duct 14 inside the hydraulic control valve 2, and the other port of the fourth oil duct 18 is connected with the brake assembly 5; in this embodiment, the left end of the pilot operated valve core 17 is further provided with a spring 16, since the signal oil port 3 has no external oil source, the pilot operated valve 2 only has the acting force of the spring 16, the spring props up the pilot operated valve core 17, so that the pilot operated valve core 17 will not shake at the position shown in fig. 2, at this time, the oil ports at the upper ends of the first oil duct 13 and the third oil duct 15 are blocked by the pilot operated valve core 17, only the upper end of the second oil duct 14 is provided with a separate oil leakage port, so that the second oil duct 14 can be communicated with the fourth oil duct 18, and at this time, hydraulic oil flows into the fourth oil duct 18 through the second oil duct 14 of the pilot operated valve 2, so that hydraulic oil enters into the brake assembly 5 through the fourth oil duct 18, and the brake assembly 5 is jacked up to achieve the purpose of releasing the parking brake.
Referring to fig. 1, a pilot oil port 10 is further disposed on the outer side of the hydraulic driving device, the other end of the pilot oil port 10 is connected with the variable hydraulic control valve 9, a path of oil path is disposed at the bottom of the variable hydraulic control valve 9 and is connected with an oil path of the shuttle valve 8, an output oil path is disposed at the bottom of the shuttle valve 8 and is connected to the variable piston 7, in this embodiment, when the parking brake is released, the first oil path 13 is not connected with the third oil path 15, the pilot oil port 10 normally pushes the variable hydraulic control valve 9 to the other side, so that the oil path of the shuttle valve 8 is connected, the hydraulic oil passes through the variable hydraulic control valve 9 and the shuttle valve 8 and finally reaches the position of the variable piston 7, so that the variable piston 7 is jacked up to achieve the purpose of changing the displacement of the hydraulic driving device, so that the hydraulic driving device operates normally and the change of the displacement can be performed normally.
Referring to fig. 6, in the embodiment, when the hydraulic drive device fails and fails to operate normally, the brake assembly 5 of the drive device is in a braking state because hydraulic oil cannot be supplied, and if an external brake release oil source is provided at the control oil port through the signal oil port 3 or the brake release oil port 4, hydraulic oil is output to the hydraulic control valve 2 and the brake assembly 5 through the signal oil port 3 and the brake release oil port 4 along the oil path according to the arrow direction of the oil path in fig. 6, so that the hydraulic control valve 2 and the brake assembly 5 can supply oil normally, and the hydraulic drive device can operate, and at this time, the equipment can be pulled away from the failure site. In this embodiment, the external oil source is turned on mainly to release two types of brakes in the hydraulic driving device, and first, the hydraulic brakes are released, so that a loop can be formed inside the hydraulic driving device, and hydraulic oil can circulate inside the loop; secondly, releasing the parking brake, and lifting up the brake assembly 5 in the hydraulic driving device to release the parking brake; specifically, in this embodiment, the signal oil port 3 and the plug of the release brake oil port 4 are screwed off, and the external release brake oil source is given, when the external oil source exists, the oil source of the hydraulic oil entering the hydraulic driving device through the signal oil port 3 directly enters the hydraulic control valve 2 to push the hydraulic control valve core 17, when the signal oil port 3 gives an oil pressure greater than 3Mpa, the hydraulic control valve core 17 is pushed away due to the action of the pushing force and the first oil duct 13 is communicated with the third oil duct 15, so that the hydraulic oil in the hydraulic driving device forms a loop, and the hydraulic brake is released, and at this time, the second oil duct 14 is not communicated with the fourth oil duct 18; the oil source entering the hydraulic drive through the brake release port 4 will release the parking brake directly from the brake release port 4 into the brake assembly 5. When the hydraulic brake and the parking brake are released, the equipment can be towed away, equipment damage can not be caused, and the service life of the hydraulic motor system is prolonged.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A hydraulic drive apparatus having a brake release function, comprising: the hydraulic control system comprises a balance valve (1), a hydraulic control valve (2), a signal oil port (3), a brake release oil port (4), a brake assembly (5), a cylinder assembly (6), a variable piston (7), a shuttle valve (8), a variable control valve (9), a pilot oil port (10), a throttle oil nozzle (11) and an oil inlet and outlet (12);
wherein, the one end of balanced valve (1) is equipped with oil inlet and outlet (12), oil inlet and outlet (12) include: an oil port A and an oil port B;
the oil port A is provided with two paths of oil paths for output, wherein one path of oil path of the oil port A is connected to the balance valve (1) through the throttle oil nozzle (11), hydraulic oil enters the balance valve (1) from the oil port A through the throttle oil nozzle (11) and pushes a valve in the balance valve (1) to the other side, so that the oil path is divided into two paths for output;
the other oil path of the oil port A comprises: the first oil way and the second oil way; the hydraulic oil output by the first oil way is split into the cylinder assembly (6), and a pressure difference is generated inside the cylinder to enable the cylinder assembly (6) to rotate so as to provide power for the hydraulic driving device; the second oil way is firstly connected with the hydraulic control valve (2) and then connected with the brake assembly (5), hydraulic oil output by the second oil way enters the hydraulic control valve (2) through an oil way, and parking brake can be released after the oil way in the hydraulic control valve (2) is communicated with the brake assembly (5);
the pilot operated valve (2) comprises: the hydraulic control valve comprises a first oil passage (13), a second oil passage (14), a third oil passage (15), a spring (16) and a hydraulic control valve core (17); the hydraulic control valve core (17) is arranged at the middle position of the hydraulic control valve (2), and a first oil duct (13), a second oil duct (14) and a third oil duct (15) which are connected to the balance valve (1) are sequentially arranged at the bottom of the hydraulic control valve core (17);
one side of the hydraulic control valve (2) is provided with a control oil port for releasing braking, and the control oil port comprises: the hydraulic control valve comprises a signal oil port (3) and a brake release oil port (4), wherein the signal oil port (3) is connected with a hydraulic control valve core (17), and the brake release oil port (4) is connected with a port at the middle part of a fourth oil duct (18);
two ends of the fourth oil duct (18) are also provided with 2 ports, one port is connected with the second oil duct (14) in the hydraulic control valve (2), and the other port of the fourth oil duct (18) is connected with the brake assembly (5);
and the control oil port is used for releasing a brake oil source to the outside through the signal oil port (3) or the brake release oil port (4), and hydraulic oil can be respectively output to the hydraulic control valve (2) and the brake assembly (5) along an oil path through the signal oil port (3) and the brake release oil port (4) to release hydraulic brake and parking brake.
2. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: the left end of the hydraulic control valve core (17) is provided with a spring (16), and the spring props up the hydraulic control valve core (17), so that the hydraulic control valve core (17) can block up oil ports at the upper ends of the first oil duct (13) and the third oil duct (15).
3. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: the upper end of the second oil duct (14) is provided with an independent oil leakage opening, the hydraulic control valve core (17) cannot block the oil leakage opening, the second oil duct (14) can be communicated with the fourth oil duct (18), and hydraulic oil flows into the fourth oil duct (18) through the second oil duct (14) of the hydraulic control valve 2, so that the hydraulic oil enters the brake assembly (5) through the fourth oil duct (18).
4. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: the oil port A and the oil port B are not fixed as oil inlets or oil outlets;
when the oil port A is used as an oil inlet, the oil port B is used as an oil outlet;
when the oil port B is used as an oil inlet, the oil port A is used as an oil outlet.
5. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: the signal oil port (3) and the release brake oil port (4) are both wide in outer end and narrow in inner end.
6. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: an external brake release oil source with the pressure larger than 3Mpa is given through the signal oil port (3), the oil source directly enters the hydraulic control valve (2) through the signal oil port (3) to push the hydraulic control valve core (17), the first oil duct (13) is communicated with the third oil duct (15), hydraulic oil in the hydraulic driving device forms a loop, and hydraulic brake is released.
7. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: when the hydraulic braking is released, the hydraulic control valve core (17) is pushed away, and the second oil duct (14) is not communicated with the fourth oil duct (18).
8. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: when the parking brake is released, an external release brake oil source is given through a release brake oil port (4), and the oil source directly enters the brake assembly (5) from the release brake oil port (4) to release the parking brake.
9. A hydraulic drive apparatus having a brake release function according to claim 1, wherein: the hydraulic driving device is characterized in that a pilot oil port (10) is further arranged on the outer side of the hydraulic driving device, the other end of the pilot oil port (10) is connected with a variable hydraulic control valve (9), one path of oil path is arranged at the bottom of the variable hydraulic control valve (9) and is connected with an oil path of a shuttle valve (8), and an output oil path is arranged at the bottom of the shuttle valve (8) and is connected to a variable piston (7).
10. A hydraulic drive apparatus having a brake release function according to claim 9, wherein: the variable hydraulic control valve (9) is pushed to the other side by inputting hydraulic oil through the pilot oil port (10), so that the hydraulic control valve (9) is communicated with an oil way of the shuttle valve (8), and the hydraulic oil finally reaches the position of the variable piston (7) through the variable hydraulic control valve (9) and the shuttle valve (8), so that the variable piston (7) is jacked up, and the displacement of the hydraulic driving device can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311144227.9A CN117167419A (en) | 2023-09-06 | 2023-09-06 | Hydraulic driving device with brake release function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311144227.9A CN117167419A (en) | 2023-09-06 | 2023-09-06 | Hydraulic driving device with brake release function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117167419A true CN117167419A (en) | 2023-12-05 |
Family
ID=88935036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311144227.9A Pending CN117167419A (en) | 2023-09-06 | 2023-09-06 | Hydraulic driving device with brake release function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117167419A (en) |
-
2023
- 2023-09-06 CN CN202311144227.9A patent/CN117167419A/en active Pending
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