Environment-friendly swing oil cylinder

Abstract

The utility model provides a kind of environment-friendly swing oil cylinder, including cylinder barrel, front end cover, rear end cover, piston and piston rod, the oil inlet and oil outlet are equipped on the outer peripheral wall of cylinder barrel, the inner thread is equipped in the one end of the inner wall of cylinder barrel close to rear end cover, the inner wall and outer peripheral wall of piston are equipped with thread, the piston is set in cylinder barrel, and with the thread in cylinder barrel is engaged, the outer peripheral wall on the bottom of piston rod is equipped with compatible thread, the piston rod is connected with piston thread, the piston rod is arranged in cylinder barrel, and one end extends out of front end cover, the front end cover and rear end cover are respectively installed at the front and rear of cylinder barrel, characterized in that, the outer portion of cylinder barrel is equipped with cooling device, the cooling device is used for the cooling effect of cylinder barrel, the cooling device is sleeved on the outer peripheral wall of cylinder barrel, by setting cooling device outside cylinder barrel, effectively reduce the temperature inside oil cylinder, guarantee the performance stability of hydraulic oil, improve the working efficiency and service life of oil cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an environmentally friendly swing hydraulic cylinder. Background Technology

[0002] As an important hydraulic actuator, the swing cylinder is widely used in various mechanical equipment, such as construction machinery and automated production lines.

[0003] During operation, traditional swing cylinders generate a lot of heat due to the friction between the piston and the inner wall of the cylinder and the flow of hydraulic oil. If this heat cannot be dissipated in time, the internal temperature of the cylinder will rise, which will affect the performance of the hydraulic oil, reduce the working efficiency and service life of the cylinder. At the same time, high temperature may also cause damage to the cylinder seals, leading to hydraulic oil leakage, which not only wastes resources but also pollutes the environment.

[0004] Therefore, an environmentally friendly swing cylinder is proposed here to solve the above-mentioned problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems of poor heat dissipation and easy hydraulic oil leakage in the existing swing cylinder during operation, this utility model provides an environmentally friendly swing cylinder.

[0006] This utility model is achieved using the following technical solution:

[0007] An environmentally friendly swing cylinder includes a cylinder barrel, a front end cover, a rear end cover, a piston, and a piston rod. The outer peripheral wall of the cylinder barrel has an oil inlet and an oil outlet for hydraulic oil to flow in and out, enabling the piston rod to swing. The inner wall of the cylinder barrel near the rear end cover has an internal thread. The inner and outer peripheral walls of the piston have threads. The piston is disposed inside the cylinder barrel and engages with the internal threads. The outer peripheral wall at the bottom of the piston rod has a matching thread. The piston rod is threadedly connected to the piston. The swing motion of the piston within the cylinder barrel is achieved through the engagement of the piston with the internal threads of the cylinder barrel. The piston rod passes through the cylinder barrel, with one end extending beyond the front end cover. The front end cover and rear end cover are respectively installed at the front and rear ends of the cylinder barrel, serving to seal and fix the piston rod. A cooling device is provided outside the cylinder barrel for cooling the cylinder barrel, and the cooling device is sleeved on the outer peripheral wall of the cylinder barrel.

[0008] The cooling device includes a cooling ring, which is a split structure. This split design facilitates the installation and disassembly of the cooling ring, making it convenient for the maintenance and repair of the cylinder. It includes an upper cooling ring and a lower cooling ring. The upper and lower cooling rings are symmetrically provided with two mounting ears on their sides. The upper and lower cooling rings are fixedly connected by bolts. The cooling rings are filled with coolant, which can absorb the heat generated by the cylinder during operation and play a cooling role. The mounting ears allow the upper and lower cooling rings to be tightly connected to form a complete cooling ring, which is fitted around the outer circumference of the cylinder.

[0009] Two connecting pipes are provided on the lower surface of one end of the upper cooling ring. The connecting pipes are connected to the inside of the upper cooling ring. A sealing ring is provided on the outer peripheral wall of the connecting pipe. A matching through hole is provided at the corresponding position of the lower cooling ring. When the upper cooling ring and the lower cooling ring are fixedly connected, the connecting pipe is inserted into the through hole. The connecting pipe is used to ensure that the coolant can flow smoothly between the upper and lower cooling rings and ensure the consistency of the cooling effect.

[0010] The upper cooling ring has an inlet and an outlet on its left side wall. The inlet and outlet are connected to an external radiator. Through the external radiator, the coolant can circulate between the cooling ring and the radiator, continuously carrying away the heat generated by the cylinder and achieving continuous and effective cooling.

[0011] The rear end cover is threaded to the cylinder barrel. This connection method is simple and reliable, and is easy to install and disassemble. The front end cover is fixedly connected to the cylinder barrel by internal hex bolts. The outer peripheral wall of the rear end cover is provided with multiple mounting feet. The mounting feet can be used to fix the hydraulic cylinder to the corresponding equipment, thereby improving the installation stability of the hydraulic cylinder.

[0012] A buffer block is provided between the rear end cover and the piston. The buffer block is installed inside the cylinder. The buffer block can buffer when the piston moves close to the rear end cover, reduce the impact force between the piston and the rear end cover, protect the internal parts of the cylinder, and extend the service life of the cylinder.

[0013] The present invention has the following advantages over the prior art:

[0014] 1. By installing a cooling device on the outside of the cylinder, the coolant circulates in the cooling ring, which can remove the heat generated during cylinder operation in a timely manner, effectively reducing the internal temperature of the cylinder, ensuring the stable performance of the hydraulic oil, improving the working efficiency and service life of the cylinder, and the use of the cooling device reduces the risk of hydraulic oil leakage caused by high temperature, reduces hydraulic oil waste, and reduces environmental pollution.

[0015] 2. By setting a buffer block inside the cylinder, the buffer block between the rear end cover and the piston can effectively reduce the impact force between the piston and the rear end cover, protect the internal parts of the cylinder, and improve the reliability and stability of the cylinder. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is an exploded three-dimensional structural diagram of this utility model;

[0018] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a top view of the present invention;

[0020] In the diagram: 1. Cylinder; 11. Oil inlet; 12. Oil outlet; 2. Rear end cap; 21. Mounting foot; 3. Front end cap; 4. Piston; 5. Guide sleeve; 6. Upper cooling ring; 61. Connecting pipe; 62. Sealing ring; 63. Mounting lug; 64. Liquid inlet; 65. Liquid outlet; 7. Lower cooling ring; 8. Buffer block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figures 1 to 4 As shown, an environmentally friendly swing cylinder includes a cylinder barrel 1, a front end cover 3, a rear end cover 2, a piston 4, and a piston rod. The outer peripheral wall of the cylinder barrel 1 is provided with an oil inlet 11 and an oil outlet 12. The inner wall of the cylinder barrel 1 near the rear end cover 2 is provided with an internal thread. The inner wall and outer peripheral wall of the piston 4 are provided with threads. The piston 4 is disposed inside the cylinder barrel 1 and meshes with the threads inside the cylinder barrel 1. The outer peripheral wall at the bottom of the piston rod is provided with a matching thread. The piston rod is threadedly connected to the piston 4. The piston rod passes through the cylinder barrel 1, with one end extending out of the front end cover 3. The front end cover 3 and the rear end cover 2 are respectively installed at the front and rear ends of the cylinder barrel 1. A cooling device is provided on the outside of the cylinder barrel 1 for cooling the cylinder barrel 1. The cooling device is sleeved on the outer peripheral wall of the cylinder barrel 1.

[0024] The cooling device includes a cooling ring, which is a split structure, including an upper cooling ring 6 and a lower cooling ring 7. The upper cooling ring 6 and the lower cooling ring 7 are symmetrically provided with two mounting ears 63 on their sides. The upper cooling ring 6 and the lower cooling ring 7 are fixedly connected by bolts. The interior of the cooling ring is filled with coolant.

[0025] Two connecting pipes 61 are provided on the lower surface of one end of the upper cooling ring 6. The connecting pipes 61 are connected to the inside of the upper cooling ring 6. A sealing ring 62 is provided on the outer peripheral wall of the connecting pipe 61. A matching through hole is provided at the corresponding position of the lower cooling ring 7. When the upper cooling ring 6 and the lower cooling ring 7 are fixedly connected, the connecting pipes 61 are inserted into the through hole.

[0026] The upper cooling ring 6 has an inlet 64 and an outlet 65 on its left side wall, and the inlet 64 and outlet 65 are connected to an external heat dissipation tank.

[0027] The rear end cover 2 is threadedly connected to the cylinder 1, and the front end cover 3 is fixedly connected to the cylinder 1 by internal hex bolts. The outer peripheral wall of the rear end cover 2 is provided with multiple mounting feet 21.

[0028] A buffer block 8 is provided between the rear end cover 2 and the piston 4. The buffer block 8 is installed inside the cylinder 1. The buffer block 8 can play a buffering role when the piston 4 moves close to the rear end cover 2, reducing the impact force between the piston 4 and the rear end cover 2, protecting the internal parts of the cylinder, and extending the service life of the cylinder.

[0029] The working principle of this utility model is as follows: When hydraulic oil enters the cylinder 1 from the oil inlet 11, it pushes the piston 4 to move inside the cylinder 1. Due to the thread engagement between the piston 4 and the inner wall of the cylinder 1, the movement of the piston 4 is converted into the swinging movement of the piston rod, thereby driving the external equipment to work.

[0030] During operation, cylinder 1 generates heat. The coolant in the cooling ring absorbs the heat and its temperature rises. Through circulation with the external radiator, the heat is dissipated, keeping the temperature of cylinder 1 within a reasonable range.

[0031] When the piston 4 moves close to the rear end cover 2, the buffer block 8 acts as a buffer to reduce the impact force between the piston 4 and the rear end cover 2.

[0032] When it is necessary to stop working, hydraulic oil flows out from the oil outlet 12 of cylinder 1, and piston 4 stops moving.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An environmentally friendly swing cylinder, comprising a cylinder barrel, a front end cover, a rear end cover, a piston, and a piston rod, wherein the outer peripheral wall of the cylinder barrel is provided with an oil inlet and an oil outlet, the inner wall of the cylinder barrel near the rear end cover is provided with an internal thread, the inner wall and outer peripheral wall of the piston are provided with threads, the piston is disposed inside the cylinder barrel and meshes with the threads inside the cylinder barrel, the outer peripheral wall at the bottom of the piston rod is provided with a matching thread, the piston rod is threadedly connected to the piston, the piston rod passes through the cylinder barrel, one end extending out of the front end cover, the front end cover and the rear end cover are respectively installed at the front and rear ends of the cylinder barrel, characterized in that, The cylinder is provided with a cooling device on its exterior. The cooling device is used to cool the cylinder and is sleeved on the outer peripheral wall of the cylinder.

2. The environmentally friendly swing cylinder according to claim 1, characterized in that: The cooling device includes a cooling ring, which is a split structure consisting of an upper cooling ring and a lower cooling ring. Both the upper and lower cooling rings have two symmetrical mounting ears on their sides. The upper and lower cooling rings are fixedly connected by bolts, and the interior of the cooling ring is filled with coolant.

3. The environmentally friendly swing cylinder according to claim 2, characterized in that: Two connecting pipes are provided on the lower surface of one end of the upper cooling ring. The connecting pipes are connected to the inside of the upper cooling ring. A sealing ring is provided on the outer peripheral wall of the connecting pipe. A matching through hole is provided at the corresponding position of the lower cooling ring. When the upper cooling ring and the lower cooling ring are fixedly connected, the connecting pipe is inserted into the through hole. The upper cooling ring has an inlet and an outlet on its left side wall, which are connected to an external heat dissipation tank.

4. The environmentally friendly swing cylinder according to claim 1, characterized in that: The rear end cover is threaded to the cylinder, and the front end cover is fixedly connected to the cylinder by hexagon socket head caps. The outer peripheral wall of the rear end cover is provided with multiple mounting feet.

5. The environmentally friendly swing cylinder according to claim 1, characterized in that: A buffer block is provided between the rear end cover and the piston, and the buffer block is installed inside the cylinder.

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