Protection device for hydraulic oil cylinder of vehicle-mounted jacking platform

Abstract

The utility model discloses a vehicle-mounted jacking platform hydraulic oil cylinder protection device, and belongs to the technical field of hydraulic oil cylinder protection, the vehicle-mounted jacking platform hydraulic oil cylinder protection device comprises a balance valve main body and a connecting valve, the balance valve main body is internally provided with an ascending oil groove, an ascending oil way, a descending oil groove and a descending oil way; through joint cooperation of the connecting valve, the ascending oil groove, the ascending oil way, the descending oil groove and the descending oil way, the flowing direction and speed of hydraulic oil are controlled, the hydraulic oil is allowed to smoothly pass through the balance valve body and enter the oil cylinder, a jacking platform is driven to ascend and descend, and when an oil supply pipeline is damaged, the pressure provided by the hydraulic oil in the descending oil groove is small, so that the oil supply pipeline is damaged. When hydraulic oil flows back, the movable block and the adjusting rod cannot be driven to move, so that the anti-backflow unit cannot be jacked open, a gap cannot be formed between the anti-backflow unit and the adjusting block, and the rising oil groove and the rising oil way cannot be communicated, namely, the hydraulic oil can be prevented from flowing back, the jacking platform is kept stable, and the safety of workers on the platform is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic cylinder protection, and in particular to a hydraulic cylinder protection device for a vehicle-mounted jacking platform. Background Art

[0002] Vehicle-mounted jacking platforms are widely used in aerial work, and their hydraulic cylinders are key components that drive the platforms' elevation. Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy, performing linear reciprocating motion. They offer simple structure and reliable operation. Reciprocating motion eliminates the need for a reduction gear, eliminates transmission backlash, and provides smooth motion. Consequently, they are widely used in the hydraulic systems of various machines. Currently, the safety of hydraulic cylinders is primarily ensured through conventional hydraulic system design and material selection.

[0003] In the prior art, hydraulic cylinders are usually equipped with pressure sensors and simple valves to control the oil pressure. However, when the oil supply pipeline is damaged, there is a lack of effective measures to prevent the hydraulic oil from flowing back, which poses a safety hazard and may endanger the safety of workers on the jacking platform. Therefore, improvements are now made to a vehicle-mounted jacking platform hydraulic cylinder protection device. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the present application provides a vehicle-mounted jacking platform hydraulic cylinder protection device, which overcomes the shortcomings of the existing technology and aims to solve the problem that when the oil supply pipeline is damaged, the hydraulic cylinder lacks effective measures to prevent the hydraulic oil from flowing back.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a vehicle-mounted jacking platform hydraulic cylinder protection device, comprising a balancing valve body and a connecting valve, the interior of the balancing valve body is provided with an ascending oil tank, an ascending oil circuit, a descending oil tank and a descending oil circuit, the ascending oil tank is connected to the descending oil tank through a connecting groove, a connecting block is fixedly connected to the side of the ascending oil tank close to the connecting groove, the connecting block is fixedly connected to the adjusting block through a spring 1, an anti-backflow unit is provided on one side of the adjusting block inside the ascending oil tank, a moving block is provided inside the descending oil tank, an adjusting rod is fixedly connected to one side of the moving block, the other end of the adjusting rod slides through the connecting block and fits into the anti-backflow unit, and a sealing block 2 is fixedly connected to the other side of the moving block.

[0006] By adopting the above technical solution, when the balancing valve body is working normally, the connecting valve, rising oil tank, rising oil circuit, descending oil tank and descending oil circuit work together to control the flow direction and speed of the hydraulic oil, allowing the hydraulic oil to pass through the balancing valve body smoothly and enter the oil cylinder to drive the jacking platform to rise and fall. When the oil supply pipeline is damaged, the pressure provided by the hydraulic oil inside the descending oil tank is small, and the moving block and the adjusting rod cannot be driven to move. Therefore, the anti-backflow unit cannot be pushed open, and a gap cannot be created between the anti-backflow unit and the adjusting block. The rising oil tank and the rising oil circuit cannot be connected, which can prevent the hydraulic oil from flowing back and ensure that the jacking platform remains stable, thereby ensuring the safety of the people working on the platform.

[0007] As a preferred technical solution of the present application, a mounting seat 2 is fixedly installed on one side of the descending oil tank inside the balancing valve body, and a control oil transfer device is fixedly installed inside the mounting seat 2. A control oil regulating groove is provided inside the control oil transfer device, and the control oil regulating groove is connected to an external manual valve through a control oil delivery pipe, and a control block is slidably inserted into the interior of the control oil regulating groove.

[0008] By adopting the above technical solution, the control oil is delivered to the interior of the control oil regulating tank through the cooperation between the manual valve and the control oil delivery pipe, so as to adjust the position of the control block.

[0009] As a preferred technical solution of the present application, the cross-section of the control block is T-shaped, and the end of the control block away from the control oil delivery pipe slides through the control oil transfer device and fits with the outer surface of the sealing block 2. The outer diameter of the sealing block 2 is adapted to the inner diameter of the descending oil tank.

[0010] By adopting the above technical solution, when the oil supply pipeline is damaged, the control block is driven by the control oil to squeeze the sealing block 2. Through the cooperation between the sealing block 2, the moving block and the adjusting rod, the anti-backflow unit can be squeezed, so that a gap appears between the anti-backflow unit and the adjusting block, and the rising oil tank and the rising oil circuit are connected, so that the hydraulic oil can flow back normally and the jacking platform can be driven to descend normally.

[0011] As a preferred technical solution of the present application, the anti-backflow unit includes a sealing block three sliding inside the rising oil tank, the sealing block three is fixedly connected to a spring two on one side close to the adjustment block, and the other end of the spring two is fixedly connected to a plugging head.

[0012] By adopting the above technical solution and setting spring 2, the plugging head can move toward the sealing block 3 when squeezed, so that the plugging head and the adjusting block are separated, that is, a gap appears between the backflow prevention unit and the adjusting block.

[0013] As a preferred technical solution of the present application, a blocking groove is provided on one side of the regulating block close to the blocking head, and the blocking groove is conically arranged. One end of the blocking head close to the blocking groove is also conically arranged and adapted to the blocking groove.

[0014] By adopting the above technical solution, the conical plugging head can be more easily inserted into the plugging groove, and due to the adaptability of the shape, a tighter seal can be formed.

[0015] As a preferred technical solution of the present application, the outer surface of the adjusting rod is located inside the connecting groove and is fixedly sleeved with a sealing block 1, and the sealing block 1 is adapted to the connecting groove.

[0016] By adopting the above technical solution and providing the sealing block 1, the rising oil tank and the descending oil tank are independent of each other and are not connected, thereby ensuring the normal operation of the hydraulic system.

[0017] As a preferred technical solution of the present application, a plug-in hole is provided on one side of the rising oil tank inside the balancing valve body, a mounting seat 1 is fixedly installed on the outer wall of the balancing valve body, the internal thread of the mounting seat 1 is connected to a push rod, and the end of the push rod away from the balancing valve body is fixedly connected to a diamond rod, and the other end of the push rod passes through the plug-in hole and is in three-phase contact with the sealing block.

[0018] By adopting the above technical solution, the insertion depth of the push rod is adjusted by rotating the diamond rod, and the spring 2 is squeezed by the cooperation between the push rod and the sealing block 3, so that the tension of the spring 2 can be changed.

[0019] As a preferred technical solution of the present application, the outer diameter of the push rod is adapted to the inner diameter of the plug hole, and the outer diameter of the sealing block three is adapted to the inner diameter of the rising oil groove.

[0020] By adopting the above technical solution, the internal sealing of the balancing valve body is ensured.

[0021] Beneficial effects of this application:

[0022] After derrick hoists and puts in place, stamp fixedly derrick of derrick pin, then, by pinpoint accuracy, the base hydraulic oil cylinder of derrick pins and the like is in the oil drain plug, and then, by pinpoint accuracy, the base hydraulic oil cylinder of derrick pins and the like is in the oil drain plug, and then, by pinpoint accuracy, the base hydraulic oil cylinder of derrick pins and the like is in the oil drain plug, and then

[0023] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention may be employed. It should be understood that the scope of the embodiments of the present invention is not limited thereby. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the balancing valve body of this application;

[0026] Figure 3 This is a schematic side cross-sectional view of the present application;

[0027] Figure 4 For this application Figure 3 A magnified diagram of point A

[0028] Figure 5 This is a schematic diagram of the partial structure breakdown of this application.

[0029] In the figure: 1. Balancing valve body; 2. Connecting valve; 3. Rising oil tank; 4. Rising oil circuit; 5. Descending oil tank; 6. Descending oil circuit; 7. Connecting through groove; 8. Anti-backflow unit; 801. Plug head; 802. Spring 2; 803. Sealing block 3; 9. Spring 1; 10. Adjusting block; 11. Connecting block; 12. Plug groove; 13. Connecting hole; 14. Push rod; 15. Mounting seat 1; 16. Diamond rod; 17. Adjusting rod; 18. Sealing block 1; 19. Moving block; 20. Sealing block 2; 21. Mounting seat 2; 22. Control oil transfer device; 23. Control oil delivery pipe; 24. Control oil adjusting groove; 25. Control block. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] like Figure 1 - Figure 5As shown, the present embodiment provides a vehicle-mounted jacking platform hydraulic cylinder protection device, including a balancing valve body 1 and a connecting valve 2. The balancing valve body 1 is provided with an ascending oil tank 3, an ascending oil path 4, a descending oil tank 5 and a descending oil path 6. The ascending oil tank 3 is connected to the descending oil tank 5 through a connecting groove 7. A connecting block 11 is fixedly connected to the side of the ascending oil tank 3 close to the connecting groove 7. The connecting block 11 is fixedly connected to an adjusting block 10 through a spring 9. An anti-backflow unit 8 is provided on one side of the adjusting block 10 in the interior of the ascending oil tank 3. A moving block 19 is provided in the interior of the descending oil tank 5. An adjusting rod 17 is fixedly connected to one side of the moving block 19. The other end of the adjusting rod 17 slides through the connecting block 11 and fits with the anti-backflow unit 8. The other end of the moving block 19 The side is fixedly connected with a sealing block 20. During use, when the balancing valve body 1 is working normally, the connecting valve 2, the rising oil tank 3, the rising oil circuit 4, the descending oil tank 5 and the descending oil circuit 6 work together to control the flow direction and speed of the hydraulic oil, allowing the hydraulic oil to pass through the balancing valve body 1 smoothly and enter the oil cylinder to drive the jacking platform to rise and fall. When the oil supply pipeline is damaged, the pressure provided by the hydraulic oil inside the descending oil tank 5 is small, and the moving block 19 and the adjusting rod 17 cannot be driven to move. Therefore, the anti-backflow unit 8 cannot be pushed open, and a gap cannot be formed between the anti-backflow unit 8 and the adjusting block 10. The rising oil tank 3 and the rising oil circuit 4 cannot be connected, which can prevent the hydraulic oil from flowing back and ensure that the jacking platform remains stable, thereby protecting the safety of the staff on the platform.

[0032] In this embodiment, if Figure 3 and 4 As shown, the interior of the balancing valve body 1 is fixedly installed with a mounting seat 21 on one side of the descending oil tank 5, and the interior of the mounting seat 21 is fixedly installed with a control oil transfer device 22. The interior of the control oil transfer device 22 is provided with a control oil regulating groove 24, and the control oil regulating groove 24 is connected to the external manual valve through the control oil delivery pipe 23. The interior of the control oil regulating groove 24 is slidably plugged with a control block 25. When in use, the control oil is delivered to the interior of the control oil regulating groove 24 through the cooperation between the manual valve and the control oil delivery pipe 23 to facilitate the adjustment of the position of the control block 25.

[0033] In this embodiment, if Figure 3 and 4As shown, the cross section of the control block 25 is T-shaped, and the control block 25 slides through the control oil transfer device 22 away from the end of the control oil delivery pipe 23 and fits the outer surface of the sealing block 20. The outer diameter of the sealing block 20 is adapted to the inner diameter of the descending oil tank 5. During use, when the oil supply pipeline is damaged, the control block 25 is driven by the control oil to squeeze the sealing block 20. Through the cooperation between the sealing block 20, the moving block 19 and the adjusting rod 17, the anti-backflow unit 8 can be squeezed, so that a gap appears between the anti-backflow unit 8 and the adjusting block 10, so that the ascending oil tank 3 and the ascending oil circuit 4 are connected, so that the hydraulic oil can flow back normally, and the jacking platform can be driven to descend normally.

[0034] In this embodiment, if Figure 5 As shown, the anti-backflow unit 8 includes a sealing block three 803 sliding inside the rising oil tank 3, and the sealing block three 803 is fixedly connected to a spring two 802 on the side close to the adjusting block 10, and the other end of the spring two 802 is fixedly connected to a plugging head 801. When in use, by setting the spring two 802, the plugging head 801 can move toward the sealing block three 803 when squeezed, so that the plugging head 801 and the adjusting block 10 are separated, that is, a gap appears between the anti-backflow unit 8 and the adjusting block 10.

[0035] In this embodiment, if Figure 5 As shown, a plugging groove 12 is provided on one side of the adjusting block 10 close to the plugging head 801. The plugging groove 12 is conical in shape, and one end of the plugging head 801 close to the plugging groove 12 is also conical in shape and matched with the plugging groove 12. When in use, the conical plugging head 801 can be more easily inserted into the plugging groove 12, and due to the adaptability of the shape, a tighter seal can be formed.

[0036] In this embodiment, if Figure 3 As shown, the outer surface of the adjusting rod 17 is located inside the connecting groove 7 and is fixedly sleeved with a sealing block 18, and the sealing block 18 is adapted to the connecting groove 7. When in use, by setting the sealing block 18, the rising oil groove 3 and the descending oil groove 5 are independent of each other and not connected, ensuring the normal operation of the hydraulic system.

[0037] In this embodiment, if Figure 1As shown, a plug hole 13 is provided on one side of the rising oil tank 3 inside the balancing valve body 1, and a mounting seat 15 is fixedly installed on the outer wall of the balancing valve body 1. The internal thread of the mounting seat 15 is connected to a push rod 14, and one end of the push rod 14 away from the balancing valve body 1 is fixedly connected to a diamond rod 16, and the other end of the push rod 14 passes through the plug hole 13 and abuts against the sealing block 3 803. When in use, the insertion depth of the push rod 14 is adjusted by rotating the diamond rod 16, and the spring 2 802 is squeezed by the cooperation between the push rod 14 and the sealing block 3 803, that is, the tension of the spring 2 802 can be changed.

[0038] In this embodiment, if Figure 3 As shown, the outer diameter of the push rod 14 is adapted to the inner diameter of the plug hole 13, and the outer diameter of the sealing block 3 803 is adapted to the inner diameter of the rising oil groove 3, ensuring the internal sealing of the balancing valve body 1 when in use.

[0039] Working principle: When using the vehicle-mounted jacking platform hydraulic cylinder protection device of the present application, when the balancing valve body 1 is working normally, the connecting valve 2, the rising oil tank 3, the rising oil circuit 4, the descending oil tank 5 and the descending oil circuit 6 work together to control the flow direction and speed of the hydraulic oil, allowing the hydraulic oil to pass through the balancing valve body 1 smoothly and enter the oil cylinder to drive the jacking platform to rise and fall. When the oil supply pipeline is damaged, the pressure provided by the hydraulic oil in the descending oil tank 5 is small, and the moving block 19 and the adjusting rod 17 cannot be driven to move, so the anti-backflow unit 8 cannot be pushed open, and the anti-backflow unit 8 and the adjusting block 1 cannot be made to move. 0, and a gap appears between the rising oil tank 3 and the rising oil circuit 4, which cannot be connected, can prevent the hydraulic oil from flowing back, ensure that the jacking platform remains stable, and thus protect the safety of the staff on the platform. When the oil supply pipeline is damaged, the oil drive control block 25 is used to squeeze the sealing block 20 by controlling the oil. Through the cooperation between the sealing block 20, the moving block 19 and the adjusting rod 17, the anti-backflow unit 8 can be squeezed to make a gap between the anti-backflow unit 8 and the adjusting block 10, so that the rising oil tank 3 and the rising oil circuit 4 are connected, so that the hydraulic oil can flow back normally, and the jacking platform can be driven to descend normally.

[0040] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A vehicle-mounted jacking platform hydraulic cylinder protection device, comprising a balancing valve body (1) and a connecting valve (2), characterized in that: An ascending oil groove (3), an ascending oil path (4), a descending oil groove (5) and a descending oil path (6) are provided inside the balancing valve body (1); the ascending oil groove (3) is connected to the descending oil groove (5) through a connecting groove (7); a connecting block (11) is fixedly connected to a side of the ascending oil groove (3) close to the connecting groove (7); the connecting block (11) is fixedly connected to an adjusting block (10) through a spring (9); an anti-backflow unit (8) is provided inside the ascending oil groove (3) on one side of the adjusting block (10); a moving block (19) is provided inside the descending oil groove (5); an adjusting rod (17) is fixedly connected to one side of the moving block (19); the other end of the adjusting rod (17) slides through the connecting block (11) and fits with the anti-backflow unit (8); a sealing block (20) is fixedly connected to the other side of the moving block (19).

2. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 1 is characterized in that: A second mounting seat (21) is fixedly mounted on one side of the descending oil tank (5) inside the balancing valve body (1), a control oil transfer device (22) is fixedly mounted inside the second mounting seat (21), a control oil regulating groove (24) is provided inside the control oil transfer device (22), and the control oil regulating groove (24) is connected to an external manual valve through a control oil delivery pipe (23), and a control block (25) is slidably inserted inside the control oil regulating groove (24).

3. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 2 is characterized in that: The cross section of the control block (25) is T-shaped, and one end of the control block (25) away from the control oil delivery pipe (23) slides through the control oil transfer device (22) and fits the outer surface of the second sealing block (20). The outer diameter of the second sealing block (20) is adapted to the inner diameter of the descending oil tank (5).

4. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 1, characterized in that: The anti-backflow unit (8) includes a sealing block three (803) sliding inside the rising oil tank (3), and a spring two (802) is fixedly connected to one side of the sealing block three (803) close to the regulating block (10), and a plug head (801) is fixedly connected to the other end of the spring two (802).

5. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 4 is characterized in that: A blocking groove (12) is provided on one side of the regulating block (10) close to the blocking head (801), and the blocking groove (12) is arranged in a conical shape. One end of the blocking head (801) close to the blocking groove (12) is also arranged in a conical shape and is adapted to the blocking groove (12).

6. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 1, characterized in that: The outer surface of the regulating rod (17) is located inside the connecting groove (7) and is fixedly sleeved with a sealing block 1 (18), and the sealing block 1 (18) is adapted to the connecting groove (7).

7. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 4 is characterized in that: The interior of the balancing valve body (1) is located on one side of the rising oil tank (3) and is provided with a plug hole (13). The outer wall of the balancing valve body (1) is fixedly mounted with a mounting seat (15). The internal thread of the mounting seat (15) is connected to a push rod (14). The end of the push rod (14) away from the balancing valve body (1) is fixedly connected to a diamond rod (16). The other end of the push rod (14) passes through the plug hole (13) and abuts against the sealing block three (803).

8. The vehicle-mounted jacking platform hydraulic cylinder protection device according to claim 7, characterized in that: The outer diameter of the push rod (14) is matched with the inner diameter of the plug hole (13), and the outer diameter of the sealing block (803) is matched with the inner diameter of the rising oil groove (3).

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