CN219492732U - Hydraulic braking system and operating table - Google Patents
Hydraulic braking system and operating table Download PDFInfo
- Publication number
- CN219492732U CN219492732U CN202320648172.4U CN202320648172U CN219492732U CN 219492732 U CN219492732 U CN 219492732U CN 202320648172 U CN202320648172 U CN 202320648172U CN 219492732 U CN219492732 U CN 219492732U
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- oil
- control valve
- hydraulic
- hydraulic cylinder
- brake system
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- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 239000003921 oil Substances 0.000 description 160
- 239000010720 hydraulic oil Substances 0.000 description 29
- 230000007423 decrease Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Regulating Braking Force (AREA)
Abstract
The utility model discloses a hydraulic brake system and an operating table. Because one end of the first oil way and one end of the second oil way are connected with the second end of the first control valve; the other end of the first oil way is connected with the hydraulic pump, the other end of the second oil way is connected with the oil tank, and one end of the third control valve is connected with the second end of the first control valve; the other end of the third control valve is connected with the hydraulic pump. Therefore, the hydraulic cylinder assembly can drive the brake wheel to extend to contact the ground by controlling the conduction of the first oil way and the non-conduction of the second oil way, so as to unlock the brake wheel; the first oil way is controlled to be non-conductive, the second oil way is controlled to be conductive, the hydraulic cylinder assembly drives the brake wheel to retract into the hydraulic cylinder assembly, and then the brake wheel is made to brake, so that the problems that the operating table is required to be manually operated to brake and unlock, the operating table is relatively large in quality, inconvenient to operate and time-consuming and labor-consuming are solved.
Description
Technical Field
The utility model belongs to the technical field of brake systems, and particularly relates to a hydraulic brake system and an operating table.
Background
The operating table is widely applied to operating rooms of hospitals, can carry patients to various wards or operating rooms, and can better move the patients. When the operating table moves, the operating table is rotated by the wheels of the operating table, so that the operating table moves. After the patient is carried to a target ward or an operating room, the operating table is stopped, however, in the related art, the operating table is required to be manually operated to brake and unlock the operating table, the operating table has large quality, the operation is inconvenient, and the time and the labor are wasted.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a hydraulic braking system and an operating table, wherein the hydraulic braking system can control braking wheels of external equipment to brake and unlock without manual operation.
The technical effects to be achieved by the utility model are realized by the following scheme:
in a first aspect, the present application provides a hydraulic brake system comprising:
the hydraulic cylinder assembly is connected with a brake wheel of external equipment;
a first control valve, a first end of which is connected with the hydraulic cylinder assembly;
the main oil way comprises a second control valve, and the second control valve is provided with a first oil way and a second oil way;
the control oil way comprises a third control valve;
the oil tank assembly comprises a hydraulic pump and an oil tank, and the hydraulic pump is connected with the oil tank;
one end of the first oil way and one end of the second oil way are connected with the second end of the first control valve; the other end of the first oil way is connected with the hydraulic pump, and the other end of the second oil way is connected with the oil tank;
one end of the third control valve is connected with the second end of the first control valve; the other end of the third control valve is connected with the hydraulic pump.
Further, the first control valve is a hydraulic control one-way valve and comprises a first oil port, a second oil port and a control oil port, wherein the first oil port is connected with the hydraulic cylinder assembly, and the second oil port is connected with the first oil way and the second oil way.
Further, the first control valve comprises a valve core and a first spring, the first control valve is provided with an accommodating cavity, the accommodating cavity is provided with a cavity oil port, the cavity oil port can be communicated with the first oil port and the second oil port, the valve core is arranged in the accommodating cavity, one end of the first spring is abutted to the cavity wall of the accommodating cavity, the other end of the first spring is abutted to the valve core, and the valve core can block the cavity oil port under the acting force of the first spring.
Further, the first control valve further comprises a control piston, the control piston is arranged in the control oil port, and one end of the control piston can drive the valve core to be far away from the cavity oil port under the action of oil pressure.
Further, the hydraulic braking system comprises a pressure release valve, the oil tank is provided with an oil inlet and an oil outlet, one end of the pressure release valve is connected with the main oil way, the other end of the pressure release valve is connected with the oil inlet of the oil tank, the hydraulic pump is connected with the oil outlet, and the other end of the second oil way is connected with the oil inlet.
Further, the hydraulic cylinder assembly comprises a hydraulic cylinder and a spring plunger, the spring plunger comprises a second spring and a plunger, the second spring is arranged in the hydraulic cylinder, one end of the second spring is abutted against the inner wall of the hydraulic cylinder, the other end of the second spring is connected with the plunger, the second spring can drive at least one part of the plunger to retract into the hydraulic cylinder, and the plunger is connected with the brake wheel.
Further, the hydraulic cylinder assemblies are multiple in number, and oil ports of the multiple hydraulic cylinder assemblies are connected with the first end of the first control valve.
Further, the number of the hydraulic cylinder assemblies is four, and oil ports of the four hydraulic cylinder assemblies are connected with the first end of the first control valve.
Further, the hydraulic brake system comprises a controller which is respectively connected with the first control valve, the second control valve and the third control valve, and the controller is used for controlling the first control valve, the second control valve and the third control valve.
In a second aspect, the present application provides an operating table comprising a brake wheel and a hydraulic brake system according to any one of the first aspects, the brake wheel being connected to the hydraulic brake system, the hydraulic brake system controlling the braking of the brake wheel.
The utility model has the following advantages:
the utility model relates to a hydraulic brake system which comprises a hydraulic cylinder assembly, a first control valve, a main oil way, a control oil way and an oil tank assembly. The hydraulic cylinder assembly is connected with a brake wheel of external equipment, the first end of the first control valve is connected with the hydraulic cylinder assembly, the main oil way comprises a second control valve, the second control valve is provided with a first oil way and a second oil way, the control oil way comprises a third control valve, the oil tank assembly comprises a hydraulic pump and an oil tank, and the hydraulic pump is connected with the oil tank. Because one end of the first oil way and one end of the second oil way are connected with the second end of the first control valve; the other end of the first oil way is connected with the hydraulic pump, the other end of the second oil way is connected with the oil tank, and one end of the third control valve is connected with the second end of the first control valve; the other end of the third control valve is connected with the hydraulic pump. Therefore, the hydraulic cylinder assembly can drive the brake wheel to extend to contact the ground by controlling the conduction of the first oil way and the non-conduction of the second oil way, so as to unlock the brake wheel; the first oil way is controlled to be non-conductive, the second oil way is controlled to be conductive, the hydraulic cylinder assembly drives the brake wheel to retract into the hydraulic cylinder assembly, and then the brake wheel is made to brake, so that the problems that the operating table is required to be manually operated to brake and unlock, the operating table is relatively large in quality, inconvenient to operate and time-consuming and labor-consuming are solved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the prior art solutions, the drawings which are used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only some of the embodiments described in the present utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydraulic brake system according to an embodiment of the present utility model;
fig. 2 is a schematic cross-sectional view of a first control valve according to an embodiment of the present utility model.
Description of the drawings: 100. a brake wheel; 1. a hydraulic cylinder assembly; 11. a hydraulic cylinder; 12. a second spring; 13. a plunger; 2. a first control valve; 21. a first end; 22. a second end; 23. a first oil port; 24. a second oil port; 25. an oil port is controlled; 26. a valve core; 27. a first spring; 28. a receiving chamber; 29. a cavity oil port; 20. a control piston; 3. a main oil path; 31. a second control valve; 311. a first oil passage; 312. a second oil path; 4. controlling an oil path; 41. a third control valve; 5. an oil tank assembly; 51. a hydraulic pump; 52. an oil tank; 6. and a pressure release valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Various non-limiting embodiments of the present application are described in detail below with reference to the attached drawing figures.
Referring to fig. 1, a hydraulic brake system according to an embodiment of the present utility model is shown, and it is known that the hydraulic brake system includes a hydraulic cylinder assembly 1, a first control valve 2, a main oil passage 3, a control oil passage 4, and an oil tank assembly 5.
The hydraulic cylinder assembly 1 is connected with a brake wheel 100 of external equipment, and when the hydraulic brake system fills hydraulic cylinders 11 of the hydraulic cylinder assembly 1 with hydraulic oil, plungers 13 of the hydraulic cylinder assembly 1 drive the brake wheel 100 to contact the ground under the action of the hydraulic oil pressure of the hydraulic oil, so that the purpose of unlocking the brake wheel 100 is achieved. When the hydraulic oil in the hydraulic cylinder 11 of the hydraulic cylinder assembly 1 gradually decreases, the pressure of the hydraulic oil on the plunger 13 decreases, and the plunger 13 retracts into the hydraulic cylinder 11 of the hydraulic cylinder assembly 1, so that the brake wheel 100 is driven to leave the ground, and the purpose of braking is achieved. The external device may be any device having road wheels, such as an operating table, a toy car, etc.
The first end 21 of the first control valve 2 is connected to the hydraulic cylinder assembly 1, and the first control valve 2 is controlled to supply hydraulic oil to the hydraulic cylinder assembly. The main oil passage 3 includes a second control valve 31, and the second control valve 31 is provided with a first oil passage 311 and a second oil passage 312. The control oil passage 4 includes a third control valve 41. The tank assembly 5 includes a hydraulic pump 51 and a tank 52, and the hydraulic pump 51 is connected to the tank 52. One end of the first oil passage 311 and one end of the second oil passage 312 are connected to the second end 22 of the first control valve 2. The other end of the first oil passage 311 is connected to the hydraulic pump 51, and the other end of the second oil passage 312 is connected to the oil tank 52. One end of the third control valve 41 is connected to the second end 22 of the first control valve 2; the other end of the third control valve 41 is connected to the hydraulic pump 51. When the hydraulic pump 51 operates, the second oil path 312 of the second control valve 31 is closed, the first oil path 311 of the second control valve 31 is opened, hydraulic oil passes through the first oil path 311 of the second control valve 31 and the first control valve 2 and then enters the hydraulic cylinder 11 of the hydraulic cylinder assembly 1, the pressure in the hydraulic cylinder 11 is increased, and the plunger 13 extends out of the hydraulic cylinder 11, so that the brake wheel 100 is driven to approach the ground and contact the ground, and the purpose of unlocking the brake wheel 100 is achieved.
When it is necessary to return the hydraulic oil in the hydraulic cylinder 11 to the tank 52, the second oil passage 312 of the second control valve 31 is opened, the first oil passage 311 of the second control valve 31 is closed, the third control valve 41 is opened, the oil from the hydraulic pump 51 passes through the third control valve 41, the hydraulic oil flows to the first control valve 2, and the valve of the first control valve 2 is opened, and the hydraulic oil in the hydraulic cylinder 11 flows from the first end 21 of the first control valve 2 to the second end 22 of the first control valve 2, thereby flowing through the second oil passage 312 of the second control valve 31 and then returning to the tank 52. At this time, the hydraulic oil in the hydraulic cylinder 11 is reduced, the pressure in the hydraulic cylinder 11 is reduced, and the plunger 13 is retracted into the hydraulic cylinder 11, so as to drive the brake wheel 100 to leave the ground, and achieve the purpose of braking. In one example, the second control valve 31 is a two-position three-way valve.
As can be seen from the above, since one end of the first oil passage 311 and one end of the second oil passage 312 are connected to the second end 22 of the first control valve 2; the other end of the first oil path 311 is connected with the hydraulic pump 51, the other end of the second oil path 312 is connected with an oil inlet, and one end of the third control valve 41 is connected with the second end 22 of the first control valve 2; the other end of the third control valve 41 is connected to a hydraulic pump 51. Therefore, the hydraulic cylinder assembly 1 drives the brake wheel 100 to extend to contact the ground by controlling the conduction of the first oil path 311 and the non-conduction of the second oil path 312, so as to unlock the brake wheel 100; the first oil way 311 is not conducted, the second oil way 312 is conducted, the hydraulic cylinder assembly 1 drives the brake wheel 100 to retract into the hydraulic cylinder assembly 1, and the brake wheel 100 is further braked, so that the problems that an operating table needs to be manually operated to brake and unlock the operating table, the operating table is large in quality, inconvenient to operate and time and labor are wasted are solved.
In an embodiment, as shown in fig. 2, the first control valve 2 is a hydraulic control check valve, and includes a first oil port 23, a second oil port 24, and a control oil port 25, where the first oil port 23 is connected to the hydraulic cylinder assembly 1, and the second oil port 24 is connected to the first oil path 311 and the second oil path 312. When the pressure in the hydraulic cylinder 11 needs to be increased, the hydraulic pump 51 operates, the second oil passage 312 is closed, and the hydraulic oil passes through the first oil passage 311, the second oil port 24, and the first oil port 23 and then enters the hydraulic cylinder 11, thereby increasing the pressure in the hydraulic cylinder 11. When the pressure in the hydraulic cylinder 11 needs to be reduced, the second oil passage 312 is opened, and the hydraulic oil flows out of the hydraulic cylinder 11, passes through the first oil port 23, the second oil port 24, and the second oil passage 312, and then enters the oil tank 52. The hydraulic oil in the hydraulic cylinder 11 decreases, and thus the pressure in the hydraulic cylinder 11 decreases.
Further, as shown in fig. 2, the first control valve 2 includes a valve core 26 and a first spring 27, the first control valve 2 is provided with a containing cavity 28, the containing cavity 28 is provided with a cavity oil port 29, the cavity oil port 29 can be communicated with the first oil port 23 and the second oil port 24, the valve core 26 is arranged in the containing cavity 28, one end of the first spring 27 is abutted against the cavity wall of the containing cavity 28, the other end is abutted against the valve core 26, and the valve core 26 can block the cavity oil port 29 under the acting force of the first spring 27. It can be known that the hydraulic oil entering from the second oil port 24 has the same flow direction as the compression direction of the first spring 27, so that the hydraulic oil flowing from the second oil port 24 to the first oil port 23 can drive the valve spool 26 away from the cavity oil port 29, and the hydraulic oil can flow from the second oil port 24 to the first oil port 23. When the hydraulic pump 51 stops running, no hydraulic oil flows from the second oil port 24 to the first oil port 23, and the direction of the hydraulic oil flowing from the hydraulic cylinder 11 to the first oil port 23 acting on the valve core 26 is the same as the extending direction of the first spring 27, so that the valve core 26 can block the cavity oil port 29 under the action of the first spring 27, the hydraulic oil in the hydraulic cylinder 11 cannot flow back when the hydraulic cylinder 11 does not continue to enter, and the hydraulic cylinder 11 keeps the pressure at the moment, so that the brake wheel 100 keeps contacting the ground.
It can be appreciated that the first control valve 2 further includes a control piston 20, the control piston 20 is disposed in the control port 25, and one end of the control piston 20 can drive the valve spool 26 away from the cavity port 29 under the action of oil pressure. The control piston 20 can move back and forth in the control oil port 25 in the same direction as the expansion and contraction of the first spring 27. When the pressure in the hydraulic cylinder 11 needs to be reduced, the control oil path 4 can be supplied with oil, at this time, the first oil path 311 is closed, the second oil path 312 is opened, the hydraulic pump 51 works, the third control valve 41 of the control oil path 4 is opened, the hydraulic oil passes through the third control valve 41 and the control oil port 25, so that the pressure of the hydraulic oil acts on the control piston 20, the control piston 20 moves, the control piston 20 drives the valve core 26 to be far away from the cavity oil port 29, the cavity oil port 29 is opened, and at this time, the hydraulic oil in the hydraulic cylinder 11 flows through the first oil port 23, the second oil port 24 and the second oil path 312, and flows back to the oil tank 52.
In one embodiment, the hydraulic braking system includes a relief valve 6, the oil tank 52 is provided with an oil inlet (not shown) and an oil outlet (not shown), one end of the relief valve 6 is connected to the main oil path 3, the other end is connected to the oil inlet of the oil tank 52, the hydraulic pump 51 is connected to the oil outlet, and the other end of the second oil path 312 is connected to the oil inlet. The relief valve 6 may return the hydraulic oil in the main oil passage 3 to the oil tank 52 when the first oil passage 311 is closed or when the oil passage is blocked. The main oil way 3 is free of hydraulic oil, so that faults can be conveniently detected.
In one embodiment, referring again to fig. 1, the hydraulic cylinder assembly 1 includes a hydraulic cylinder 11, and a spring plunger 13 (not shown), the spring plunger 13 includes a second spring 12 and a plunger 13, the second spring 12 is disposed in the hydraulic cylinder 11, one end abuts against an inner wall of the hydraulic cylinder 11, the other end is connected to the plunger 13, the second spring 12 can drive at least a portion of the plunger 13 to retract into the hydraulic cylinder 11, and the plunger 13 is connected to the brake wheel 100. After the hydraulic oil flowing from the control oil passage 4 drives the valve spool 26 to be far away from the cavity oil port 29, when the plunger 13 retracts into the hydraulic cylinder 11 under the action of the contraction of the second spring 12, the plunger 13 pushes the hydraulic oil to the oil port of the hydraulic cylinder 11 to drive, so that the hydraulic oil flows out of the hydraulic cylinder 11 and flows back into the oil tank 52. The hydraulic oil flows out of the hydraulic cylinder 11, the pressure in the hydraulic cylinder 11 is reduced, the plunger 13 is retracted into the hydraulic cylinder 11, and the brake wheel 100 is driven to leave the ground, so that the purpose of braking is achieved.
In an embodiment, the number of the hydraulic cylinder assemblies 1 is plural, the oil ports of the plurality of hydraulic cylinder assemblies 1 are all connected with the first end 21 of the first control valve 2, so as to realize that one hydraulic brake system controls a plurality of brake wheels 100, it can be known that one external device can have a plurality of brake wheels 100, and then one external device is provided with one hydraulic brake system to control unlocking and braking of all the brake wheels 100.
Further, the number of the hydraulic cylinder assemblies 1 is four, and the oil ports of the four hydraulic cylinder assemblies 1 are all connected with the first end 21 of the first control valve 2. Generally, the external device has four brake wheels 100, and then four hydraulic cylinder assemblies 1 are provided to control unlocking and braking of the four brake wheels 100.
In one embodiment, the hydraulic brake system includes a controller (not shown) coupled to the first control valve 2, the second control valve 31, and the third control valve 41, respectively, and configured to control the first control valve 2, the second control valve 31, and the third control valve 41. The controller is convenient for controlling the operation of the whole hydraulic braking system, so that the hydraulic braking system is more automatic.
The present application further provides an operating table, in an embodiment, the operating table includes a brake wheel 100 and a hydraulic braking system as described in any of the above, the brake wheel 100 is connected to the hydraulic braking system, and the hydraulic braking system controls braking of the brake wheel 100. The operating table includes a hydraulic brake system, and the structure and the beneficial effects of the hydraulic brake system are described in detail, which will not be described in detail herein.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.
Claims (10)
1. A hydraulic brake system, the hydraulic brake system comprising:
the hydraulic cylinder assembly is connected with a brake wheel of external equipment;
a first control valve, a first end of which is connected with the hydraulic cylinder assembly;
the main oil way comprises a second control valve, and the second control valve is provided with a first oil way and a second oil way;
the control oil way comprises a third control valve;
the oil tank assembly comprises a hydraulic pump and an oil tank, and the hydraulic pump is connected with the oil tank;
one end of the first oil way and one end of the second oil way are connected with the second end of the first control valve; the other end of the first oil way is connected with the hydraulic pump, and the other end of the second oil way is connected with the oil tank;
one end of the third control valve is connected with the second end of the first control valve; the other end of the third control valve is connected with the hydraulic pump.
2. The hydraulic brake system of claim 1 wherein the first control valve is a pilot operated check valve comprising a first port connected to the hydraulic cylinder assembly, a second port connected to the first oil passage and the second oil passage, and a control port.
3. The hydraulic brake system of claim 2 wherein the first control valve includes a valve core and a first spring, the first control valve is provided with a receiving chamber, the receiving chamber is provided with a chamber port, the chamber port is capable of communicating the first port and the second port, the valve core is disposed in the receiving chamber, one end of the first spring abuts against a chamber wall of the receiving chamber, the other end of the first spring abuts against the valve core, and the valve core can block the chamber port under the action force of the first spring.
4. The hydraulic brake system of claim 3 wherein the first control valve further comprises a control piston disposed within the control port and having one end operable to drive the valve spool away from the cavity port under the influence of oil pressure.
5. The hydraulic brake system of claim 1 wherein the hydraulic brake system includes a relief valve, the oil tank has an oil inlet and an oil outlet, one end of the relief valve is connected to the main oil path, the other end is connected to the oil inlet of the oil tank, the hydraulic pump is connected to the oil outlet, and the other end of the second oil path is connected to the oil inlet.
6. The hydraulic brake system of claim 1 wherein the hydraulic cylinder assembly includes a hydraulic cylinder and a spring plunger including a second spring and a plunger, the second spring disposed within the hydraulic cylinder and having one end abutting the inner wall of the hydraulic cylinder and another end connected to the plunger, the second spring being operable to drive at least a portion of the plunger into the hydraulic cylinder, the plunger being connected to the brake wheel.
7. The hydraulic brake system of claim 1 wherein the number of hydraulic cylinder assemblies is plural and the ports of the plurality of hydraulic cylinder assemblies are connected to the first end of the first control valve.
8. The hydraulic brake system of claim 7 wherein the number of hydraulic cylinder assemblies is four and the ports of each of the four hydraulic cylinder assemblies are connected to the first end of the first control valve.
9. The hydraulic brake system of any one of claims 1-8, wherein the hydraulic brake system includes a controller coupled to the first control valve, the second control valve, and the third control valve, respectively, the controller configured to control the first control valve, the second control valve, and the third control valve.
10. An operating table, characterized in that the operating table comprises a brake wheel and a hydraulic brake system according to any one of claims 1-9, wherein the brake wheel is connected with the hydraulic brake system, and the hydraulic brake system controls the braking of the brake wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648172.4U CN219492732U (en) | 2023-03-22 | 2023-03-22 | Hydraulic braking system and operating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648172.4U CN219492732U (en) | 2023-03-22 | 2023-03-22 | Hydraulic braking system and operating table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492732U true CN219492732U (en) | 2023-08-08 |
Family
ID=87483505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320648172.4U Active CN219492732U (en) | 2023-03-22 | 2023-03-22 | Hydraulic braking system and operating table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492732U (en) |
-
2023
- 2023-03-22 CN CN202320648172.4U patent/CN219492732U/en active Active
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