Adjustable gap buffering hydraulic cylinder

Abstract

The utility model provides an adjustable gap buffering hydraulic cylinder, which belongs to the technical field of hydraulic cylinders and comprises a hydraulic cylinder body. The buffering cushion is connected to the side end of the hydraulic cylinder body; the rear plate is fixedly connected to one side end of the hydraulic cylinder body, the side end of the rear plate is rotationally connected with a lead screw, and the side end of the lead screw is connected with a connecting seat; the adjusting mechanism comprises a lead screw nut, a connecting plate, a first connecting block, a connecting rod and a ring-shaped sliding block, the lead screw nut is connected to the lead screw in a sleeving mode, the connecting plate is fixedly connected to the lead screw nut, and the adjusting mechanism composed of the lead screw and the lead screw nut is adopted, so that the gap between the piston of the hydraulic cylinder body and the rear plate can be conveniently adjusted; therefore, the buffering effect is accurately controlled. Therefore, the performance of the hydraulic cylinder body is improved, and the capability of adapting to different working environments is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to an adjustable clearance buffer hydraulic cylinder. Background Technique

[0002] Large engineering machinery and equipment often need to rely on a hydraulic system to provide reliable and stable power output. Therefore, relatively high requirements are put forward for the operating performance and quality of the hydraulic system. At present, in order to meet the needs of these equipment, the moving speed of the current hydraulic cylinder is getting faster and faster. As the moving speed of the hydraulic cylinder increases, the momentum of the piston and the piston rod becomes larger and larger. Due to the certain mass of the piston and the piston rod itself, when the piston runs to the end, the moving piston often mechanically collides with the cylinder head and the cylinder bottom, generating impact pressure, which makes the cylinder head and the cylinder bottom easily damaged, thereby reducing the service life of the hydraulic cylinder.

[0003] The authorized publication number "CN217926552U" records an adjustable clearance buffer hydraulic cylinder, which relates to the technical field of hydraulic cylinders. The adjustable clearance buffer hydraulic cylinder includes a cylinder body, and the head and the bottom of the cylinder body are respectively fixedly connected to the cylinder head and the cylinder bottom. First chutes are respectively opened at the head and the bottom of the inner wall of the cylinder body, and second chutes are respectively opened inside the cylinder head and the cylinder bottom. The first chute and the second chute are communicated; when the piston is about to reach the cylinder head or the cylinder bottom, the piston contacts the push block and pushes the metal sheet to move into the second chute. At this time, the stop block gradually extends out of the second chute, thereby reducing the inner cross-section of the cylinder head or the cylinder bottom, slowing down the flow rate of the hydraulic oil, and thus slowing down the moving speed of the piston, effectively reducing the problem of mechanical collision between the piston and the cylinder head or the cylinder bottom. By setting a buffer rod, when the piston is about to reach the cylinder head or the cylinder bottom, the buffer rod first inserts into the cylinder head or the cylinder bottom and cooperates with the stop block to perform two-stage buffering, avoiding the problem of sudden deceleration of the piston and improving the practicability.

[0004] Through the above patent, by setting a buffer rod, when the piston is about to reach the cylinder head or the cylinder bottom, the buffer rod first inserts into the cylinder head or the cylinder bottom and cooperates with the stop block to perform two-stage buffering, avoiding the problem of sudden deceleration of the piston and improving the practicability.

[0005] Traditional hydraulic cylinders may lack a convenient and effective clearance adjustment mechanism, resulting in the inability of the hydraulic cylinder to quickly and accurately adjust the buffer clearance under different working conditions. This may lead to unstable performance of the hydraulic cylinder under different load conditions, affecting its buffering effect and working efficiency. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide an adjustable clearance buffer hydraulic cylinder, aiming to solve the problem that the hydraulic cylinders in the prior art may lack a convenient and effective clearance adjustment mechanism, resulting in the inability to quickly and accurately adjust the buffer clearance under different working conditions. This may lead to unstable performance of the hydraulic cylinder under different load conditions, affecting its buffer effect and working efficiency.

[0007] To achieve the above object, the present utility model provides the following technical solutions:

[0008] An adjustable clearance buffer hydraulic cylinder, comprising:

[0009] A hydraulic cylinder body;

[0010] A buffer pad, which is connected to the side end of the hydraulic cylinder body;

[0011] A rear plate, which is fixedly connected to one side end of the hydraulic cylinder body. A lead screw is rotatably connected to the side end of the rear plate, and a connecting seat is connected to the side end of the lead screw; and

[0012] An adjusting mechanism, which includes a lead screw nut, a connecting plate, a first connecting block, a connecting rod and a circular slider. The lead screw nut is sleeved and connected to the lead screw. The connecting plate is fixedly connected to the lead screw nut. The first connecting block is rotatably connected to the side end of the connecting plate through a rotating shaft. The connecting rod is rotatably connected to the side end of the first connecting block through a rotating shaft. The circular slider is fixedly connected to the side end of the connecting rod.

[0013] As a preferred solution of the present utility model, a chute is provided at the side end of the connecting seat, and the chute is matched with the circular slider. A spring is sleeved and connected to the circumferential surface of the lead screw. One side end of the spring is connected to the connecting plate, and the other side end of the spring is connected to the rear plate.

[0014] As a preferred solution of the present utility model, a front plate is fixedly connected to the other side end of the hydraulic cylinder body, and a smooth rod is fixedly connected between the front plate and the rear plate.

[0015] As a preferred solution of the present utility model, the rear plate and the front plate have the same thickness.

[0016] As a preferred solution of the present utility model, the thickness of the connecting seat is 4 cm.

[0017] As a preferred solution of the present utility model, the thickness of the buffer pad is 4 cm.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] 1. In this solution, by adopting the adjustment mechanism composed of a lead screw and a lead screw nut, the clearance between the piston of the hydraulic cylinder body and the rear plate can be conveniently adjusted, thereby achieving precise control of the buffering effect. This not only improves the performance of the hydraulic cylinder body but also enhances its ability to adapt to different working environments, ensuring the stability and reliability of the hydraulic system. By setting a 4 - centimeter - thick buffer pad, the hydraulic cylinder body can effectively absorb and relieve the impact force, improving the overall buffering performance of the system. This helps protect the hydraulic system from damage caused by sudden piston stops or impacts, reduces system vibration and noise, and extends the service life of the equipment.

[0020] 2. In this solution, the thicknesses of the rear plate and the front plate are equal, and the 4 - centimeter - thick design of the connecting seat provides sufficient structural strength and rigidity. This helps maintain the stability of the hydraulic cylinder body when bearing various forces and loads, prevents excessive deformation, and improves the positioning accuracy and repeat positioning accuracy of the hydraulic cylinder body. At the same time, this design also helps improve the overall durability and wear resistance of the hydraulic cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0022] Figure 1 is a three - dimensional view of the present utility model;

[0023] Figure 2 is an exploded view of the present utility model;

[0024] Figure 3 is the present utility model Figure 2 an enlarged view of the lead screw in;

[0025] Figure 4 is the present utility model Figure 3 an exploded view of the lead screw in.

[0026] In the figures: 1. Hydraulic cylinder body; 2. Buffer pad; 3. Front plate; 4. Rear plate; 5. Smooth rod; 6. Connecting seat; 7. Lead screw; 8. Chute; 9. Connecting plate; 10. First connecting block; 11. Connecting rod; 12. Circular slider; 13. Spring; 14. Lead screw nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:

[0030] An adjustable clearance buffer hydraulic cylinder, comprising:

[0031] A hydraulic cylinder body 1;

[0032] A buffer pad 2, the buffer pad 2 is connected to the side end of the hydraulic cylinder body 1;

[0033] A rear plate 4, the rear plate 4 is fixedly connected to one side end of the hydraulic cylinder body 1, a lead screw 7 is rotatably connected to the side end of the rear plate 4, and a connecting seat 6 is connected to the side end of the lead screw 7; and

[0034] An adjusting mechanism, the adjusting mechanism includes a lead screw nut 14, a connecting plate 9, a first connecting block 10, a connecting rod 11 and a ring-shaped slider 12. The lead screw nut 14 is sleeved and connected to the lead screw 7, the connecting plate 9 is fixedly connected to the lead screw nut 14, the first connecting block 10 is rotatably connected to the side end of the connecting plate 9 through a rotating shaft, the connecting rod 11 is rotatably connected to the side end of the first connecting block 10 through a rotating shaft, and the ring-shaped slider 12 is fixedly connected to the side end of the connecting rod 11.

[0035] In a specific embodiment of the present utility model, the hydraulic cylinder body 1 is the core component of the hydraulic system, responsible for generating linear motion under hydraulic action. The hydraulic cylinder body 1 provides structural support for the piston and the buffer pad. The buffer pad 2 is connected to the side end of the hydraulic cylinder body 1 and is used to absorb and relieve the energy generated by hydraulic shock during the movement of the piston, thereby protecting the hydraulic system and reducing mechanical vibration and noise. The rear plate 4 is fixedly connected to one side end of the hydraulic cylinder body 1 and provides a fixed fulcrum for the lead screw 7. The lead screw 7 is connected to the side end of the rear plate 4 and is a rotational connection component that can convert the linear motion of the rear plate into rotational motion, or vice versa. The connecting seat 6 is used to connect other components or devices related to the rotation of the lead screw 7. The lead screw nut 14 is sleeved on the lead screw 7 and is used to adjust and fix the position of the lead screw 7 and control the moving distance of the rear plate 4. The connecting plate 9 is fixedly connected to the lead screw nut 14 and provides a connection platform for other components of the adjustment mechanism. The first connecting block 10 is rotatably connected to the side end of the connecting plate 9 through a rotating shaft. It is a rotatable component and participates in the mechanical linkage of the adjustment mechanism. The connecting rod 11 is rotatably connected to the side end of the first connecting block 10 and also serves as a rotating component of the adjustment mechanism, participating in more detailed motion adjustment. The circular slider 12 is fixedly connected to the side end of the connecting rod 11 and serves as part of the buffer device or is used to guide and limit the movement trajectory of the connecting rod 11.

[0036] For details, please refer to Figures 1-3 , a chute 8 is provided at the side end of the connecting seat 6. The chute 8 is matched with the circular slider 12. A spring 13 is sleeved and connected to the circumferential surface of the lead screw 7. One side end of the spring 13 is connected to the connecting plate 9, and the other side end of the spring 13 is connected to the rear plate 4.

[0037] In this embodiment: The chute 8 is provided at the side end of the connecting seat 6 and is matched with the circular slider 12. The chute 8 allows the circular slider 12 to slide inside it, thereby providing a limiting and guiding mechanism for the adjustment mechanism and ensuring that the movements of the connecting rod 11 and the first connecting block 10 are carried out within the specified trajectories. The circular slider 12 is fixedly connected to the side end of the connecting rod 11. By cooperating with the connecting seat 6 through the chute 8, the movement range of the connecting rod 11 is limited, ensuring the safety and reliability of the adjustment mechanism. The function of the spring 13 is to provide an elastic restoring force when necessary, enabling the rear plate 4 to return to the predetermined position, or to absorb and buffer the impact force during the movement of the piston of the hydraulic cylinder body 1, protecting the hydraulic system from damage. One side end of the spring 13 is connected to the connecting plate 9, and the other side end is connected to the rear plate 4. The spring 13 provides a reset force during the movement of the piston of the hydraulic cylinder body 1, ensuring that the rear plate 4 can quickly return at the end of the stroke of the hydraulic cylinder body 1. At the same time, it can also absorb and slow down the impact force during the movement of the piston, improving the stability and service life of the system.

[0038] For details, please refer toFigures 1-3 On the other side of the hydraulic cylinder body 1, the front plate 3 is fixedly connected, and a polished rod 5 is fixedly connected between the front plate 3 and the rear plate 4.

[0039] In this embodiment: The front plate 3 is fixedly connected to the other side end of the hydraulic cylinder body 1, providing an additional support point for the hydraulic cylinder body 1. The function of the front plate 3 is to increase the overall rigidity and stability of the hydraulic cylinder body 1, especially in applications that bear bidirectional loads or require higher lateral stiffness. The polished rod 5 is fixedly connected between the front plate 3 and the rear plate 4. Its main function is to provide a linear guide rail, enabling the rear plate 4 to move linearly on the polished rod 5. The polished rod 5 ensures the linearity of the hydraulic cylinder body 1 during movement, avoiding deviation and shaking, and improving the output accuracy of the hydraulic cylinder body 1. In addition, the polished rod 5 also plays a role in transmitting force. It converts the movement of the rear plate 4 into the linear movement of the piston of the hydraulic cylinder body 1, thereby realizing the working function of the hydraulic cylinder body 1. The design and material selection of the polished rod 5 have an important impact on the performance of the hydraulic cylinder body 1 and need to have sufficient strength and wear resistance to withstand repeated forces and wear. With the addition of the front plate 3 and the polished rod 5, the hydraulic cylinder body 1 is more perfect in structure, can adapt to a wider range of working environments and load conditions, and at the same time improves the reliability and working efficiency of the hydraulic system.

[0040] For details, please refer to Figures 1-4 The thickness of the rear plate 4 is equal to that of the front plate 3.

[0041] In this embodiment: The equal thickness of the rear plate 4 and the front plate 3 helps to ensure the balance of the hydraulic cylinder body 1 during the piston movement. Because when the piston moves to one side, due to the pressure of the hydraulic oil, a moment will be generated, causing the hydraulic cylinder body 1 to rotate. If the thicknesses of the rear plate 4 and the front plate 3 are different, it will cause the hydraulic cylinder body 1 to move on an uneven plane, resulting in unstable operation.

[0042] For details, please refer to Figures 1-2 The thickness of the connecting seat 6 is 4 cm.

[0043] In this embodiment: A thickness of 4 cm can provide sufficient structural strength to ensure that the connecting seat 6 can withstand various forces and loads generated during the operation of the hydraulic cylinder body 1. This is crucial for maintaining the stability of the hydraulic cylinder body 1 and preventing performance degradation due to excessive deformation.

[0044] For details, please refer to Figure 1 and Figure 2 The thickness of the buffer pad 2 is 4 cm.

[0045] In this embodiment: The thickness of the buffer pad 2 is 4 cm, providing a relatively large buffer space, which can absorb and relieve a large impact force during the movement of the piston. This helps to protect the hydraulic system from damage caused by sudden piston stop or impact, and reduces the vibration and noise of the system.

[0046] The working principle and usage process of the present utility model are as follows: First, ensure that the hydraulic fluid in the hydraulic system is sufficient, the system is clean, and there is no leakage. Fix the hydraulic cylinder body 1 in an appropriate position, ensuring that the front plate 3 and the rear plate 4 maintain a certain distance from the adjacent structures to allow the free movement of the polished rod 5. Check all connecting components to ensure that the connections are firm and there is no looseness. Start the hydraulic pump to provide power for the system. Check whether the working pressure of the hydraulic system is within the safe range. Drive the movement of the hydraulic cylinder piston by controlling the flow rate and pressure of the hydraulic pump. If necessary, achieve the linear movement of the hydraulic cylinder piston through the connection between the front plate 3 and the polished rod 5. Observe whether the movement of the hydraulic cylinder body 1 is stable and whether there are abnormal noises or vibrations. When reaching the working position or when it is necessary to stop, turn off the power supply of the hydraulic pump to stop the supply of hydraulic oil. If necessary, the hydraulic cylinder can be reset through the spring 13 and the connecting plate 9.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present 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 described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An adjustable clearance buffer hydraulic cylinder, characterized in that: include: Hydraulic cylinder body (1); A buffer pad (2), wherein the buffer pad (2) is connected to a side end of the hydraulic cylinder body (1); A rear plate (4), the rear plate (4) being fixedly connected to one side end of the hydraulic cylinder body (1), the side end of the rear plate (4) being rotatably connected to a screw rod (7), the side end of the screw rod (7) being connected to a connecting seat (6); and The adjusting mechanism comprises a screw nut (14), a connecting plate (9), a first connecting block (10), a connecting rod (11) and a ring-shaped slider (12); the screw nut (14) is sleeved and connected to the screw (7); the connecting plate (9) is fixedly connected to the screw nut (14); the first connecting block (10) is rotatably connected to the side end of the connecting plate (9) via a rotating shaft; the connecting rod (11) is rotatably connected to the side end of the first connecting block (10) via a rotating shaft; and the ring-shaped slider (12) is fixedly connected to the side end of the connecting rod (11).

2. The adjustable clearance buffer hydraulic cylinder according to claim 1, characterized in that: A slide groove (8) is provided at the side end of the connecting seat (6), and the slide groove (8) matches the ring-shaped slider (12). A spring (13) is sleeved and connected to the circumferential surface of the screw rod (7), and one side end of the spring (13) is connected to the connecting plate (9), and the other side end of the spring (13) is connected to the rear plate (4).

3. The adjustable clearance buffer hydraulic cylinder according to claim 2, characterized in that: The other side end of the hydraulic cylinder body (1) is fixedly connected to the front plate (3), and a polished rod (5) is fixedly connected between the front plate (3) and the rear plate (4).

4. The adjustable clearance buffer hydraulic cylinder according to claim 3, characterized in that: The thickness of the rear plate (4) and the front plate (3) are equal.

5. The adjustable clearance buffer hydraulic cylinder according to claim 4, characterized in that: The thickness of the connecting seat (6) is 4CM.

6. The adjustable clearance buffer hydraulic cylinder according to claim 5, characterized in that: The thickness of the buffer pad (2) is 4CM.

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