Piston assembly capable of being rapidly cooled

Abstract

The utility model discloses a piston assembly capable of being rapidly cooled, which belongs to the technical field of pistons and comprises a cylinder barrel, a piston rod is slidably connected to the inner wall of the cylinder barrel, a lug ring is connected to the top of the piston rod, and a cylinder bottom is connected to the bottom of the cylinder barrel. A cooling assembly for cooling the inner wall of the cylinder barrel and the outer wall of the piston rod is arranged on the outer wall of the cylinder barrel, the first liquid channel and the second liquid channel are formed in the inner wall of the cylinder barrel and the outer wall of the piston rod, the inner wall of the cylinder barrel and the interior of the piston rod are cooled at the same time, and the piston and the piston rod can be cooled at the same time; and the cooling efficiency of the piston is improved, and cooling is more uniform through the first liquid channel distributed in an S shape from top to bottom and the second liquid channel distributed in an S shape from left to right.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, and particularly relates to a piston assembly capable of rapid cooling. Background Art

[0002] In a hydraulic transmission system, as a key actuator, the performance of a hydraulic cylinder directly affects the operating efficiency and stability of the entire system. Especially for the piston part of the hydraulic cylinder, under long-term and high-load working conditions, it is prone to generate high temperature, resulting in a decline in material properties, seal failure, and even failures. Currently, there are various cooling solutions for the pistons of hydraulic cylinders on the market, such as external air cooling, internal oil cooling, etc. However, most of these solutions have disadvantages such as uneven cooling and low efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a piston assembly capable of rapid cooling to solve the problems raised in the above background art. To achieve the above purpose, the utility model provides the following technical solution: A piston assembly capable of rapid cooling, including a cylinder barrel, the inner wall of the cylinder barrel is slidably connected with a piston rod, the top of the piston rod is connected with an earring, the bottom of the cylinder barrel is connected with a cylinder bottom, and a cooling assembly for cooling the inner wall of the cylinder barrel and the outer wall of the piston rod is arranged on the outer wall of the cylinder barrel.

[0004] Preferably, the cooling assembly includes a liquid storage tank and a first water pump. The top of the liquid storage tank is connected with a liquid injection pipe, the bottom of the liquid storage tank is connected with a liquid discharge pipe, the input end of the first water pump is connected with the bottom of the liquid storage tank, the output end of the first water pump is connected with one end of a liquid inlet pipe, a liquid channel one is arranged inside the cylinder barrel, two ends of the liquid channel one are respectively provided with a liquid outlet and a liquid inlet, the other end of the liquid inlet pipe is connected with the liquid inlet, a liquid outlet pipe is installed on the top of the liquid storage tank, and the other end of the liquid outlet pipe is connected with the liquid outlet.

[0005] Preferably, the cooling assembly further includes a second water pump. The input end of the second water pump is connected with the top of the liquid storage tank, the output end of the second water pump is connected with a first telescopic pipe, the other end of the first telescopic pipe is connected with a two-way joint, the two-way joint is installed on the outer wall of the piston rod, a liquid channel two is arranged inside the piston rod, the two-way joint is connected with one end of the liquid channel two, a joint is installed on the other side of the outer wall of the piston rod, one end of the joint is connected with the other end of the liquid channel two, the other end of the joint is connected with a return pipe, the other end of the return pipe is connected with the other end of the two-way joint, a second telescopic pipe is installed between the bottom of the two-way joint and the top of the liquid storage tank, and the return pipe is communicated with the second telescopic pipe.

[0006] Preferably, the liquid channel one is distributed in an S shape from top to bottom along the outer wall of the cylinder barrel.

[0007] Preferably, the second liquid channel is distributed in an S shape from left to right along the outer wall of the piston rod.

[0008] Preferably, a seal is installed inside the cylinder barrel, and a dust-proof ring is arranged above the seal.

[0009] Preferably, a piston is connected to the bottom of the piston rod, a sealing ring is sleeved on the outer wall of the piston, and a buffer sleeve is installed between the piston and the piston rod.

[0010] Technical effects and advantages of the present utility model: When cooling the piston assembly, start the first water pump to suck the coolant into the liquid inlet pipe, enter the first liquid channel through the liquid inlet, and the coolant flows upward along the first liquid channel, taking away the heat of the inner wall of the cylinder barrel and the heat of the outer wall of the piston at the same time. Finally, it flows into the liquid outlet pipe through the liquid outlet and then into the liquid storage tank, forming a complete circulation loop. Start the second water pump to suck the coolant into the second liquid channel through the two-way joint, and then start the joint to convey the coolant along the second liquid channel. The coolant flows along the second liquid channel, taking away the heat of the outer wall of the piston rod, dissipating the heat of the outer wall of the piston rod, and enabling the inner wall of the cylinder barrel, the outer wall of the piston rod, and the outer wall of the piston to be cooled. Compared with the prior art, it has the effect of improving the cooling efficiency, and the first liquid channel distributed in an S shape from top to bottom and the second liquid channel distributed in an S shape from left to right can make the heat dissipation more uniform. Compared with the prior art, it has the effect of making the cooling more uniform. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0012] Figure 2 is a schematic diagram of the piston rod structure of the present utility model;

[0013] Figure 3 is a schematic cross-sectional view of the cylinder barrel of the present utility model;

[0014] Figure 4 is a schematic cross-sectional view of the piston rod of the present utility model.

[0015] In the figure: 1. Cylinder barrel; 2. Earring; 3. Cylinder bottom; 4. Liquid storage tank; 5. Liquid injection pipe; 6. Drain pipe; 7. First water pump; 8. Second water pump; 9. Liquid inlet pipe; 10. Liquid outlet pipe; 11. Two-way joint; 12. First telescopic pipe; 13. Joint; 14. Piston rod; 15. Buffer sleeve; 16. Piston; 17. Sealing ring; 18. Liquid outlet; 19. Liquid inlet; 20. Seal; 21. Dust-proof ring; 22. First liquid channel; 23. Second liquid channel; 24. Return pipe; 25. Second telescopic pipe. Detailed Embodiments

[0016] In order to make the implementation means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific illustrations. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection or a mechanical connection, and it can also be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and the communication inside two components can be achieved.

[0017] Embodiment 1

[0018] As Figures 1-3 shown, a piston assembly capable of rapid cooling includes a cylinder barrel 1. A piston rod 14 is slidably connected to the inner wall of the cylinder barrel 1. An earring 2 is connected to the top of the piston rod 14. A cylinder bottom 3 is connected to the bottom of the cylinder barrel 1. A cooling assembly for cooling the inner wall of the cylinder barrel 1 and the outer wall of the piston rod 14 is provided on the outer wall of the cylinder barrel 1. A seal 20 is installed inside the cylinder barrel 1. The seal 20 seals the top of the cylinder barrel 1. A dust-proof ring 21 is arranged above the seal 20. The dust-proof ring 21 can prevent dust from entering the cylinder barrel 1. A piston 16 is connected to the bottom of the piston rod 14. A sealing ring 17 is sleeved on the outer wall of the piston 16. The sealing ring 17 seals the bottom of the piston rod 14. Cooperating with the seal, the sealing performance of the piston assembly can be better. A buffer sleeve 15 is installed between the piston 6 and the piston rod 14. The buffer sleeve 15 can buffer the sliding of the piston 14 and improve the stability of the sliding.

[0019] In this embodiment, the cooling assembly includes a liquid storage tank 4 and a first water pump 7. A liquid injection pipe 5 is connected to the top of the liquid storage tank 4. A liquid discharge pipe 6 is connected to the bottom of the liquid storage tank 4. The liquid storage tank 4 is used for storing coolant. Through the liquid injection pipe 5 and the liquid discharge pipe 6, it is convenient to add and discharge coolant and facilitate the replacement of the coolant. The input end of the first water pump 7 is connected to the bottom of the liquid storage tank 4. The output end of the first water pump 7 is connected to one end of a liquid inlet pipe 9. A first liquid channel 22 is provided inside the cylinder barrel 1. An outlet 18 and an inlet 19 are respectively provided at both ends of the first liquid channel 22. The other end of the liquid inlet pipe 9 is connected to the inlet 19. An outlet pipe 10 is installed on the top of the liquid storage tank 4. The other end of the outlet pipe 10 is connected to the outlet 18. When cooling the cylinder barrel 1, by starting the first water pump 7, the coolant is sucked into the liquid inlet pipe 9, enters the first liquid channel 22 through the inlet 19, the coolant flows upward along the first liquid channel 22, takes away the heat of the inner wall of the cylinder barrel 1, and finally flows into the outlet pipe 10 through the outlet 18 and then flows into the liquid storage tank 4, forming a complete circulation loop.

[0020] Preferably, the first liquid passage 22 is distributed in an S shape from top to bottom along the outer wall of the cylinder barrel 1. The first liquid passage 22 distributed in an S shape from bottom to top can increase the flow area of the coolant, enabling the coolant to fully contact the inner wall of the cylinder barrel 1, taking away the heat from the inner wall of the cylinder barrel 1, causing the heat on the outer wall of the piston 16 inside the cylinder barrel 1 to also dissipate, and making the heat dissipation more uniform.

[0021] Embodiment 2

[0022] On the basis of Embodiment 1, a further improvement lies in that, as Figures 1-4 shown in a piston assembly capable of rapid cooling, the cooling assembly further includes a second water pump 8. The input end of the second water pump 8 is connected to the top of the liquid storage tank 4, the output end of the second water pump 8 is connected to the first telescopic pipe 12, the other end of the first telescopic pipe 12 is connected to a two-way joint 11, the two-way joint 11 is installed on the outer wall of the piston rod 14, a second liquid passage 23 is provided inside the piston rod 14, one end of the two-way joint 11 is connected to the second liquid passage 23, a joint 13 is installed on the other side of the outer wall of the piston rod 14, one end of the joint 13 is connected to the other end of the second liquid passage 23, the other end of the joint is connected to a return pipe 24, the other end of the return pipe 24 is connected to the other end of the two-way joint 11, a second telescopic pipe 25 is installed between the bottom of the two-way joint 11 and the top of the liquid storage tank 4, the return pipe 24 is communicated with the second telescopic pipe 25. Starting the second water pump 8 can cause the coolant in the liquid storage tank 4 to flow into the first telescopic pipe 12. The coolant flows into the second liquid passage 23 through the two-way joint 11. After flowing through the second liquid passage 23, the coolant flows into the return pipe 24 from the joint 13, and then the return pipe 24 guides the coolant into the other end of the two-way joint 11. The coolant flows into the second telescopic pipe 25 from the two-way joint 11 and finally flows into the liquid storage tank 4, forming a complete circulation line, which is convenient for recycling and releasing the coolant.

[0023] Preferably, the second liquid passage 23 is distributed in an S shape from left to right along the outer wall of the piston rod 14. The second liquid passage 23 distributed in an S shape from left to right has a larger contact area with the inside of the piston rod 14, and the second liquid passage 23 is evenly distributed, making the heat dissipation of the piston rod 14 more uniform.

[0024] The technological process and working principle of the utility model are as follows: When cooling the piston assembly, the first water pump 7 is started to suck the coolant into the liquid inlet pipe 9, and it enters the first liquid passage 22 through the liquid inlet 19. The coolant flows upward along the first liquid passage 22, taking away the heat from the inner wall of the cylinder barrel 1 and the heat from the outer wall of the piston 16 at the same time. Finally, it flows into the liquid outlet pipe 10 through the liquid outlet 18 and then into the liquid storage tank 4, forming a complete circulation loop. The second water pump 8 is started to suck the coolant into the second liquid passage 23 through the two-way joint 11. The coolant flows along the second liquid passage 23, taking away the heat from the outer wall of the piston rod 14, dissipating the heat from the outer wall of the piston rod 14, so that the inner wall of the cylinder barrel 1, the outer wall of the piston rod 14, and the outer wall of the piston 16 can all be cooled, improving the cooling efficiency. Moreover, the first liquid passage 22 distributed in an S shape from top to bottom and the second liquid passage 23 distributed in an S shape from left to right make the cooling more uniform. The coolant can be recycled through the first water pump 7 and the second water pump 8, which is convenient for replacing the coolant.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the utility model and are not used to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A piston assembly capable of rapid cooling, comprising a cylinder (1), characterized in that: The inner wall of the cylinder (1) is slidably connected to a piston rod (14), the top of the piston rod (14) is connected to an earring (2), the bottom of the cylinder (1) is connected to a cylinder bottom (3), and the outer wall of the cylinder (1) is provided with a cooling component for cooling the inner wall of the cylinder (1) and the outer wall of the piston rod (14).

2. A rapidly coolable piston assembly according to claim 1, characterized in that: The cooling assembly comprises a liquid storage tank (4) and a water pump (7); the top of the liquid storage tank (4) is connected to a liquid injection pipe (5); the bottom of the liquid storage tank (4) is connected to a liquid discharge pipe (6); the input end of the water pump (7) is connected to the bottom of the liquid storage tank (4); the output end of the water pump (7) is connected to one end of a liquid inlet pipe (9); a liquid channel (22) is provided inside the cylinder (1); the two ends of the liquid channel (22) are respectively provided with a liquid outlet (18) and a liquid inlet (19); the other end of the liquid inlet pipe (9) is connected to the liquid inlet (19); a liquid outlet pipe (10) is installed on the top of the liquid storage tank (4); the other end of the liquid outlet pipe (10) is connected to the liquid outlet (18).

3. A rapidly coolable piston assembly according to claim 2, characterized in that: The cooling assembly further comprises a second water pump (8), the input end of the second water pump (8) being connected to the top of the liquid storage tank (4), the output end of the second water pump (8) being connected to a first telescopic tube (12), the other end of the first telescopic tube (12) being connected to a two-way joint (11), the two-way joint (11) being mounted on the outer wall of the piston rod (14), the inner wall of the piston rod (14) being provided with a second liquid channel (23), the two-way joint (11) being connected to one end of the second liquid channel (23), the other side of the outer wall of the piston rod (14) being mounted with a joint (13), one end of the joint (13) being connected to the other end of the second liquid channel (23), the other end of the joint being connected to a return pipe (24), the other end of the return pipe (24) being connected to the other end of the two-way joint (11), the bottom of the two-way joint (11) and the top of the liquid storage tank (4) being mounted with a second telescopic tube (25), the return pipe (24) being in communication with the second telescopic tube (25).

4. A rapidly coolable piston assembly according to claim 2, characterized in that: The liquid channel 1 (22) is distributed in an S shape from top to bottom along the outer wall of the cylinder (1).

5. A rapidly coolable piston assembly according to claim 3, characterized in that: The second liquid channel (23) is distributed in an S shape from left to right along the outer wall of the piston rod (14).

6. A rapidly coolable piston assembly according to claim 1, characterized in that: A sealing member (20) is installed inside the cylinder (1), and a dustproof ring (21) is arranged above the sealing member (20).

7. A rapidly coolable piston assembly according to claim 1, characterized in that: The bottom of the piston rod (14) is connected to a piston (16), the outer wall of the piston (16) is sleeved with a sealing ring (17), and a buffer sleeve (15) is installed between the piston (16) and the piston rod (14).

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