Oil cylinder multifunctional hydraulic lock for railway rescue

Abstract

The utility model discloses an oil cylinder multifunctional hydraulic lock for railway rescue, which comprises a hydraulic lock upper valve block and a hydraulic lock lower valve block, a hydraulic lock oil pipe is arranged between the hydraulic lock upper valve block and the hydraulic lock lower valve block, and a hydraulic lock valve core is mounted on the hydraulic lock upper valve block. An emergency unloading device valve element and an emergency unloading device fixing screw used for fixing the emergency unloading device valve element are installed on the hydraulic lock upper valve block. The emergency unloading device valve element is arranged on the hydraulic lock, the emergency unloading device valve element can be opened through the emergency unloading device fixing screw, when a system breaks down and the hydraulic lock cannot be opened, an oil way can cross the hydraulic lock through the emergency unloading device to return oil, the oil cylinder falls down, the locking state is relieved in time, and the safety and stability of the system are guaranteed; and the rescue efficiency and the rescue operation safety are ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic lock technology, specifically a multi-functional hydraulic lock for railway rescue. Background Technology

[0002] In railway rescue operations, hydraulic cylinder locks are used to maintain the stable position of hydraulic cylinders and prevent accidental movement. A hydraulic lock is a device used to control the direction and pressure of fluid flow in a hydraulic system. It ensures that hydraulic oil flows in only one direction under specific conditions, locking the pressure in the positive direction and preventing the cylinder from moving due to external factors. However, in some situations, such as hydraulic system failure or power outages, the hydraulic lock may malfunction, preventing rescuers from releasing the lock in time, thus affecting rescue efficiency and safety. Therefore, we propose a multi-functional hydraulic cylinder lock for railway rescue. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a multi-functional hydraulic lock for railway rescue cylinders. When the system fails and the hydraulic lock cannot be opened, the oil circuit can be bypassed by the emergency unloading device to return oil to the hydraulic lock, so that the cylinder can fall down and the locked state can be released in time, ensuring the safety and stability of the system. This can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional hydraulic lock for railway rescue, comprising an upper hydraulic lock valve block and a lower hydraulic lock valve block, wherein a hydraulic lock oil pipe is provided between the upper and lower hydraulic lock valve blocks, a hydraulic lock valve core is installed on the upper hydraulic lock valve block, and an emergency unloading device valve core and an emergency unloading device fixing screw for fixing the emergency unloading device valve core are installed on the upper hydraulic lock valve block.

[0005] As a preferred technical solution of this utility model, a hydraulic lock overflow valve seat is installed on the hydraulic lock upper valve block, an overflow valve base is installed on the hydraulic lock overflow valve seat, a one-way valve steel ball support is provided on the side surface of the overflow valve base, an overflow valve spring is sleeved on the outside of the one-way valve steel ball support, and an overflow valve adjusting screw seat is installed on the outside of the overflow valve spring on the overflow valve base.

[0006] As a preferred technical solution of this utility model, a rotating rod is fixedly provided on the outer surface of the fixing screw of the emergency unloading device.

[0007] As a preferred technical solution of this utility model, a through hole is provided on the side surface of the rotating rod, and a fixing hole corresponding to the through hole is provided on the outer surface of the hydraulic lock valve block. When the emergency unloading device fixing screw fixes the valve core of the emergency unloading device on the hydraulic lock valve block, the through hole and the fixing hole coincide. A fixing rod is provided through the through hole, and the fixing rod passes through the through hole and then enters the fixing hole.

[0008] As a preferred technical solution of this utility model, the side surface of the hydraulic lock valve block is provided with an annular groove coaxial with the valve core of the emergency unloading device. The fixing hole is opened in the annular groove, and the inner diameter of the fixing hole is smaller than the inner spacing of the annular groove. The upper part of the inner two sides of the annular groove is provided with a fixing ring, and the end of the fixing rod is provided with a limit ring. The diameter of the limit ring is smaller than the inner spacing of the annular groove and larger than the inner spacing of the fixing ring.

[0009] Compared with the prior art, the beneficial effects of this utility model are: an emergency unloading device valve core is set on the hydraulic lock, and the emergency unloading device valve core can be opened by the fixing screw of the emergency unloading device. When the system fails and the hydraulic lock cannot be opened, the oil circuit can be bypassed by the emergency unloading device to return oil, so that the oil cylinder can fall down and the locking state can be released in time, ensuring the safety and stability of the system, and guaranteeing the efficiency of rescue and the safety of rescue operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0012] Figure 3 This utility model Figure 2 A partial structural diagram.

[0013] In the diagram: 1. Upper hydraulic lock valve block; 2. Hydraulic lock valve core; 3. Lower hydraulic lock valve block; 4. Hydraulic lock oil pipe; 5. Hydraulic lock overflow valve seat; 6. Overflow valve base; 7. Check valve steel ball support; 8. Overflow valve spring; 9. Overflow valve adjusting screw seat; 10. Emergency unloading device valve core; 11. Emergency unloading device fixing screw; 12. Rotating rod; 13. Through hole; 14. Annular groove; 15. Fixing hole; 16. Fixing rod; 17. Limiting ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1This utility model provides a technical solution: a multi-functional hydraulic lock for railway rescue, comprising an upper valve block 1 and a lower valve block 3, with a hydraulic lock oil pipe 4 disposed between the upper valve block 1 and the lower valve block 3. A hydraulic lock valve core 2 is installed on the upper valve block 1. During on-site rescue, the hydraulic lock can effectively prevent the cylinder from sliding down due to the weight of the locomotive or other external forces, improving operational safety. In locomotive rescue operations, the application of the hydraulic lock can effectively prevent accidents and improve work efficiency and equipment lifespan.

[0016] The upper valve block 1 of the hydraulic lock is equipped with an emergency unloading device valve core 10 and an emergency unloading device fixing screw 11 for fixing the emergency unloading device valve core 10. The emergency unloading device valve core 10 can be opened by the emergency unloading device fixing screw 11. In the event of a system failure and the hydraulic lock cannot be opened, the oil circuit can be bypassed by the emergency unloading device to return oil, so that the oil cylinder can fall and the locking state can be released in time, ensuring the safety and stability of the system and guaranteeing the efficiency of rescue and the safety of rescue operations.

[0017] In a preferred embodiment, a relief valve assembly is provided on the upper valve block 1 of the hydraulic lock. The relief valve assembly includes a hydraulic lock relief valve seat 5 mounted on the upper valve block 1 of the hydraulic lock, a relief valve base 6 mounted on the hydraulic lock relief valve seat 5, a one-way valve ball support 7 provided on the side surface of the relief valve base 6, a relief valve spring 8 sleeved on the outside of the one-way valve ball support 7, and a relief valve adjusting screw seat 9 mounted on the outside of the relief valve spring 8 on the relief valve base 6. The relief valve assembly is used to limit the maximum pressure of the hydraulic cylinder and protect the equipment from high pressure damage.

[0018] This hydraulic lock can both provide emergency unloading in case of system failure and limit the maximum pressure of the cylinder by overflow restriction. It has multiple functions and can provide comprehensive protection for the equipment.

[0019] Please see Figure 2-3 This utility model also provides another embodiment, which is largely the same as the previous embodiment, except that: a rotating rod 12 is fixedly provided on the outer surface of the emergency unloading device fixing screw 11. The rotating rod 12 can quickly unscrew the emergency unloading device fixing screw 11 to quickly unload the load without the need for tools, which improves the efficiency of emergency unloading and helps to extend the service life of the equipment.

[0020] In a preferred embodiment, a through hole 13 is provided on the side surface of the rotating rod 12, and a fixing hole 15 corresponding to the through hole 13 is provided on the outer surface of the hydraulic lock valve block 1. When the emergency unloading device fixing screw 11 fixes the emergency unloading device valve core 10 to the hydraulic lock valve block 1, the through hole 13 and the fixing hole 15 coincide. A fixing rod 16 is provided through the through hole 13. After passing through the through hole 13, the fixing rod 16 passes into the fixing hole 15. The rotating rod 12 and the emergency unloading device fixing screw 11 can be fixed to the hydraulic lock valve block 1 through the fixing rod 16, which improves the stability of the emergency unloading device, prevents it from opening automatically and causing the cylinder to fall suddenly, and ensures the locking and operation safety of the cylinder during on-site rescue.

[0021] The fixing rod 16 and the fixing hole 15 can be fixed together by their own friction and will not fall off when no external force is applied.

[0022] In a further preferred embodiment, the side surface of the hydraulic lock valve block 1 is provided with an annular groove 14 coaxial with the valve core 10 of the emergency unloading device. A fixing hole 15 is formed within the annular groove 14, and the inner diameter of the fixing hole 15 is smaller than the inner spacing of the annular groove 14. Fixing rings are provided on the upper part of the inner two side surfaces of the annular groove 14. A limiting ring 17 is provided at the end of the fixing rod 16. The diameter of the limiting ring 17 is smaller than the inner spacing of the annular groove 14 but larger than the inner spacing of the fixing rings. The fixing rod 16 is U-shaped, with two symmetrically arranged rotating rods 12. Two through holes 13 and two fixing holes 15 are also provided. The end of the fixing rod 16 passes through the through hole 13 and extends into the annular groove 14. The limiting ring 17 is also provided within the annular groove 14, allowing the end of the fixing rod 16 to rotate within the annular groove 14 and insert into the fixing hole 15, but preventing it from detaching from the annular groove 14 due to the limiting ring 17 and the fixing ring. When the emergency unloading device fixing screw 11 fixes the emergency unloading device valve core 10, the rotating rod 12 and the fixing rod 16 are rotated to correspond to the fixing hole 15. The end of the fixing rod 16 is inserted into the fixing hole 15 and fixed by the friction between them. This fixes the emergency unloading device fixing screw 11 and the emergency unloading device valve core 10, preventing them from loosening and causing the oil cylinder to fall suddenly. When the system malfunctions and the hydraulic lock cannot be opened, the fixing rod 16 is pulled so that its end is disengaged from the fixing hole 15. At this time, the limit ring 17 moves close to the fixing ring, and the end of the fixing rod 16 moves into the annular groove 14. Rotating the fixing rod 16 will cause it to drive the emergency unloading device fixing screw 11 to rotate through the rotating rod 12, thereby opening the emergency unloading device for emergency unloading. This allows the oil circuit to return oil over the hydraulic lock, enabling the oil cylinder to fall. The fixing is more secure and the opening is more convenient and quick.

[0023] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional hydraulic lock for railway rescue, comprising an upper valve block (1) and a lower valve block (3), characterized in that: A hydraulic lock oil pipe (4) is provided between the upper hydraulic lock valve block (1) and the lower hydraulic lock valve block (3). A hydraulic lock valve core (2) is installed on the upper hydraulic lock valve block (1), and an emergency unloading device valve core (10) and an emergency unloading device fixing screw (11) for fixing the emergency unloading device valve core (10) are installed on the upper hydraulic lock valve block (1).

2. The multi-functional hydraulic lock for railway rescue cylinders according to claim 1, characterized in that: The hydraulic lock upper valve block (1) is equipped with a hydraulic lock overflow valve seat (5), and the hydraulic lock overflow valve seat (5) is equipped with an overflow valve base (6). A one-way valve steel ball support (7) is provided on the side surface of the overflow valve base (6). An overflow valve spring (8) is sleeved on the outside of the one-way valve steel ball support (7). An overflow valve adjusting screw seat (9) is installed on the outside of the overflow valve spring (8) on the overflow valve base (6).

3. A multi-functional hydraulic lock for railway rescue cylinders according to claim 1, characterized in that: A rotating rod (12) is fixedly installed on the outer surface of the fixing screw (11) of the emergency unloading device.

4. A multi-functional hydraulic lock for railway rescue cylinders according to claim 3, characterized in that: The rotating rod (12) has a through hole (13) on its side surface. The hydraulic lock valve block (1) has a fixing hole (15) corresponding to the through hole (13) on its outer side surface. When the emergency unloading device fixing screw (11) fixes the emergency unloading device valve core (10) on the hydraulic lock valve block (1), the through hole (13) and the fixing hole (15) coincide. A fixing rod (16) is installed through the through hole (13). The fixing rod (16) passes through the through hole (13) and then enters the fixing hole (15).

5. A multi-functional hydraulic lock for railway rescue cylinders according to claim 4, characterized in that: The side surface of the hydraulic lock valve block (1) is provided with an annular groove (14) coaxial with the valve core (10) of the emergency unloading device. The fixing hole (15) is opened in the annular groove (14), and the inner diameter of the fixing hole (15) is smaller than the inner spacing of the annular groove (14). The upper part of the inner two sides of the annular groove (14) is provided with a fixing ring, and the end of the fixing rod (16) is provided with a limit ring (17). The diameter of the limit ring (17) is smaller than the inner spacing of the annular groove (14) and larger than the inner spacing of the fixing ring.

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