Multi-buffering hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a multi-buffering hydraulic oil cylinder which comprises a base, a cylinder body is fixedly connected to the upper surface of the base, a supporting rod is in threaded connection with the inner wall of the base, an end cover is installed on the upper surface of the cylinder body, and the supporting rod is in threaded connection with the inner wall of the end cover. The inner wall of the cylinder body is slidably connected with a piston rod, the piston rod is slidably connected with the inner wall of the end cover, a buffer assembly is arranged on the surface of the end cover, the buffer assembly comprises a mounting frame, and the mounting frame is fixedly connected with the side surface of the end cover. According to the hydraulic oil cylinder, the buffering assembly and the auxiliary assembly are arranged, the buffering effect on the hydraulic oil cylinder is guaranteed, meanwhile, the buffering structure of the hydraulic oil cylinder can be installed outside, and then the problem that the stroke of the hydraulic oil cylinder is shortened due to the fact that the buffering structure is installed in the cylinder body of the hydraulic oil cylinder is solved; the stroke of the hydraulic cylinder is effectively guaranteed, multi-stage buffering is achieved, and the overall reliability of a hydraulic system is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a multi-buffered hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders, as key actuators in hydraulic systems, are considered the "power arms" of industrial machinery. They mainly consist of cylinder barrels, piston rods, pistons, and sealing devices. During operation, under the action of pressurized oil, a pressure difference is generated on both sides of the piston, which in turn pushes the piston rod to make linear reciprocating motion, efficiently converting hydraulic energy into mechanical energy. This provides a powerful and stable linear driving force for various equipment. Due to its compact structural design, it can generate huge thrust in a small space, with an output force ranging from several tons to thousands of tons, and is therefore widely used in the field of engineering machinery.

[0003] Existing technologies, such as the utility model patent with publication number CN216714869U, disclose a multi-buffered hydraulic cylinder. This patent uses a main body shell with a waterproof layer on the outside and three oil drain holes at the bottom. Inside the main body shell are a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a telescopic piston, a support plate, a sponge layer, a buffer spring one, a buffer spring two, and a fixed bracket. The left side of the main body shell has an oil inlet and an oil outlet. The inner side of the fixed bracket is slidably connected to the sliding plate two and the sliding plate one of the buffer spring three. This invention solves the problem that the hydraulic cylinder has weak buffering capacity, cannot perform multiple buffering operations, and cannot effectively protect the hydraulic cylinder body.

[0004] When adding a buffer structure to a hydraulic cylinder, the existing hydraulic cylinder buffer structure, such as the one mentioned above, is set inside the cylinder body. Since the stroke of a hydraulic cylinder largely depends on the internal space of the cylinder body, when the designer sets the buffer structure inside the cylinder body, it will occupy the space inside the cylinder body, which will lead to a shortening of the stroke distance of the hydraulic cylinder, thus limiting the application range and working efficiency of the hydraulic cylinder. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where, when designers place the buffer structure inside the cylinder, it occupies space inside the cylinder, which in turn shortens the stroke distance of the hydraulic cylinder, thus limiting the application range and working efficiency of the hydraulic cylinder. Therefore, this invention proposes a multi-buffered hydraulic cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-buffered hydraulic cylinder, including a base, a cylinder body fixedly connected to the upper surface of the base, a support rod threadedly connected to the inner wall of the base, an end cap installed on the upper surface of the cylinder body, the support rod threadedly connected to the inner wall of the end cap, a piston rod slidably connected to the inner wall of the cylinder body, the piston rod slidably connected to the inner wall of the end cap, and a buffer assembly provided on the surface of the end cap;

[0007] The buffer assembly includes a mounting bracket, which is fixedly connected to the side surface of the end cap. A connecting rod is slidably connected to the inner wall of the mounting bracket. A load-bearing ring is fixedly connected to the surface of the connecting rod. A first spring is fixedly connected to the lower surface of the load-bearing ring. The end of the first spring away from the load-bearing ring is fixedly connected to the lower inner wall of the mounting bracket. A connecting frame is fixedly connected to the upper end of the connecting rod. The connecting frame is fixedly connected to the surface of the piston rod.

[0008] The buffer assembly also includes a second buffer module consisting of a sleeve, a second spring, a T-shaped compression sleeve, a compression block, a closing cover, and a fixing frame.

[0009] Preferably, the sleeve is fixedly connected to the side surface of the base, a second spring is fixedly connected to the lower inner wall of the sleeve, a T-shaped compression sleeve is fixedly connected to the upper end of the second spring, the T-shaped compression sleeve is slidably connected to the inner wall of the sleeve, and a compression block is fixedly connected to the upper surface of the T-shaped compression sleeve. The second spring can assist the T-shaped compression sleeve in providing secondary buffering for the connecting rod, thereby effectively improving the overall buffering capacity of the equipment.

[0010] Preferably, the inner wall of the sleeve is threaded with a sealing cap, which is sleeved on the surface of the connecting rod. The sealing cap can block the upper end of the sleeve, thereby limiting the movement distance of the extrusion block and ensuring that the extrusion block always moves within the sleeve.

[0011] Preferably, a fixing frame is fixedly connected to the surface of the cylinder body, the sleeve is fixedly connected to the surface of the fixing frame, and the fixing frame is sleeved with the surface of the support rod. The fixing frame can support the upper end of the sleeve to improve the stability of the sleeve during use.

[0012] Preferably, the connecting rod passes through the lower surface of the mounting bracket, the first spring is sleeved on the surface of the connecting rod, the connecting rod passes through the upper surface of the load-bearing ring, and the mounting bracket is sleeved on the surface of the load-bearing ring. Through the cooperation of the first spring and the load-bearing ring, the force generated by the connecting rod can be absorbed in advance.

[0013] Preferably, the sleeve has air holes on its surface, the sleeve is connected to the interior of the air holes, the connecting rod is inserted into the inner wall of the T-shaped extrusion sleeve, the extrusion block is sleeved on the surface of the connecting rod, and the extrusion block is slidably connected to the inner wall of the sleeve. The extrusion block can increase the sealing between the T-shaped extrusion sleeve and the sleeve, thereby improving the extrusion effect of the T-shaped extrusion sleeve on the air inside the sleeve.

[0014] Preferably, the surface of the cylinder body is provided with an auxiliary component, the auxiliary component including a collar, the collar being fixedly connected to the surface of the cylinder body, a guide frame being fixedly connected to the surface of the collar, a damping sleeve being fixedly connected to the inner wall of the guide frame, the damping sleeve being sleeved with the surface of the connecting rod, and a support block being fixedly connected to the upper surface of the collar, the support block being fixedly connected to the inner surface of the mounting bracket. Through the cooperation of the guide frame and the collar, the position of the damping sleeve can be supported to ensure that the damping sleeve is accurately sleeved on the surface of the connecting rod.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] In this invention, by setting buffer components and auxiliary components, the buffering effect on the hydraulic cylinder is ensured while allowing the hydraulic cylinder to have the buffer structure installed externally. This reduces the problem of the hydraulic cylinder's stroke being reduced when the buffer structure is installed inside the cylinder body, thus effectively guaranteeing the hydraulic cylinder's stroke and achieving multi-stage buffering, thereby improving the overall reliability of the hydraulic system. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a hydraulic cylinder with multiple buffers is provided for this utility model.

[0018] Figure 2 A bottom view of a hydraulic cylinder with multiple buffers is provided for this utility model;

[0019] Figure 3 A front view of a multi-buffered hydraulic cylinder is provided for this utility model;

[0020] Figure 4 A partial structural diagram of a multi-buffered hydraulic cylinder is provided for this utility model.

[0021] Figure 5 This invention proposes a multi-buffered hydraulic cylinder. Figure 4 Schematic diagram of the structure at point A in the middle;

[0022] Figure 6 This utility model presents a schematic diagram of the buffer assembly of a multi-buffered hydraulic cylinder.

[0023] Figure 7This invention proposes a multi-buffered hydraulic cylinder. Figure 6 Schematic diagram of the structure at point B.

[0024] Legend:

[0025] 1. Base; 2. Cylinder body; 3. Support rod; 4. End cap; 5. Piston rod; 6. Buffer assembly; 61. Mounting bracket; 62. Connecting rod; 63. Load-bearing ring; 64. First spring; 65. Connecting bracket; 66. Sleeve; 67. Second spring; 68. T-shaped extrusion sleeve; 69. Extrusion block; 610. Sealing cap; 611. Fixing bracket; 7. Auxiliary assembly; 71. Collar; 72. Guide bracket; 73. Damping sleeve; 74. Support block. Detailed Implementation

[0026] Please see Figures 1-7 This utility model provides a technical solution: a multi-buffered hydraulic cylinder, including a base 1, a cylinder body 2 fixedly connected to the upper surface of the base 1, a support rod 3 threadedly connected to the inner wall of the base 1, an end cap 4 installed on the upper surface of the cylinder body 2, the support rod 3 threadedly connected to the inner wall of the end cap 4, a piston rod 5 slidably connected to the inner wall of the cylinder body 2, the piston rod 5 slidably connected to the inner wall of the end cap 4, and a buffer assembly 6 provided on the surface of the end cap 4.

[0027] The specific settings and functions of its buffer component 6 and auxiliary component 7 will be explained below.

[0028] In this embodiment: the buffer assembly 6 includes a mounting frame 61, which is fixedly connected to the side surface of the end cap 4. A connecting rod 62 is slidably connected to the inner wall of the mounting frame 61. A load-bearing ring 63 is fixedly connected to the surface of the connecting rod 62. A first spring 64 is fixedly connected to the lower surface of the load-bearing ring 63. The end of the first spring 64 away from the load-bearing ring 63 is fixedly connected to the lower inner wall of the mounting frame 61. A connecting frame 65 is fixedly connected to the upper end of the connecting rod 62. The connecting frame 65 is fixedly connected to the surface of the piston rod 5.

[0029] The buffer assembly 6 also includes a second buffer module consisting of a sleeve 66, a second spring 67, a T-shaped compression sleeve 68, a compression block 69, a closing cover 610, and a fixing frame 611.

[0030] Specifically, the sleeve 66 is fixedly connected to the side surface of the base 1, the lower inner wall of the sleeve 66 is fixedly connected to a second spring 67, the upper end of the second spring 67 is fixedly connected to a T-shaped compression sleeve 68, the T-shaped compression sleeve 68 is slidably connected to the inner wall of the sleeve 66, and the upper surface of the T-shaped compression sleeve 68 is fixedly connected to a compression block 69. The second spring 67 can assist the T-shaped compression sleeve 68 in providing secondary buffering for the connecting rod 62, thereby effectively improving the overall buffering capacity of the equipment.

[0031] Specifically, the inner wall of the sleeve 66 is threaded with a sealing cap 610, which is fitted onto the surface of the connecting rod 62.

[0032] In this embodiment: the upper end of the sleeve 66 can be sealed by the sealing cap, thereby limiting the movement distance of the extrusion block 69 to ensure that the extrusion block 69 always moves within the sleeve 66.

[0033] Specifically, a fixing bracket 611 is fixedly connected to the surface of the cylinder body 2, and the sleeve 66 is fixedly connected to the surface of the fixing bracket 611. The fixing bracket 611 is sleeved with the surface of the support rod 3. The upper end of the sleeve 66 can be supported by the fixing bracket 611 to improve the stability of the sleeve 66 during use.

[0034] Specifically, the connecting rod 62 passes through the lower surface of the mounting bracket 61, the first spring 64 is sleeved on the surface of the connecting rod 62, the connecting rod 62 passes through the upper surface of the load-bearing ring 63, and the mounting bracket 61 is sleeved on the surface of the load-bearing ring 63.

[0035] In this embodiment, the force generated by the connecting rod 62 can be absorbed in advance through the cooperation of the first spring 64 and the force-carrying ring 63.

[0036] Specifically, the sleeve 66 has air holes on its surface, and the sleeve 66 is connected to the interior of the air holes. The connecting rod 62 is inserted into the inner wall of the T-shaped extrusion sleeve 68, and the extrusion block 69 is sleeved on the surface of the connecting rod 62. The extrusion block 69 is slidably connected to the inner wall of the sleeve 66. The extrusion block 69 can increase the sealing between the T-shaped extrusion sleeve 68 and the sleeve 66, thereby improving the extrusion effect of the T-shaped extrusion sleeve 68 on the air inside the sleeve 66.

[0037] In this embodiment: an auxiliary component 7 is provided on the surface of the cylinder body 2. The auxiliary component 7 includes a collar 71, which is fixedly connected to the surface of the cylinder body 2. A guide frame 72 is fixedly connected to the surface of the collar 71. A damping sleeve 73 is fixedly connected to the inner wall of the guide frame 72. The damping sleeve 73 is sleeved with the surface of the connecting rod 62. A support block 74 is fixedly connected to the upper surface of the collar 71. The support block 74 is fixedly connected to the inner surface of the mounting bracket 61.

[0038] In this embodiment, the guide frame 72 and the collar 71 work together to support the position of the damping sleeve 73, so as to ensure that the damping sleeve 73 is accurately fitted onto the surface of the connecting rod 62.

[0039] Working principle: When using a hydraulic cylinder, the lifting end of the piston rod 5 is installed on the structure to be driven. Then, the oil supply pipe used by the hydraulic cylinder is installed on the interface of the base 1 and the end cover 4 respectively. After the installation is completed, the hydraulic cylinder can be controlled to work by controlling the pumped hydraulic medium.

[0040] When the piston rod 5 retracts, it pushes the connecting frame 65, which in turn pushes the connecting rod 62 toward the cylinder 2. With the assistance of the load ring 63, the connecting rod 62 compresses the first spring 64. The first spring 64 is deformed and initially absorbs the force on the connecting rod 62. During the movement, the connecting rod 62, guided by the guide frame 72 and the damping sleeve 73, passes through the closed cover 610 and the extrusion block 69 and inserts into the interior of the T-shaped extrusion sleeve 68. When the connecting rod 62 contacts the lower inner wall of the T-shaped extrusion sleeve 68 and continues to move, the T-shaped extrusion sleeve 68 is subjected to force and moves along the guiding direction of the sleeve 66. During the movement, it presses the second spring 67, which is deformed. At the same time, the T-shaped extrusion sleeve 68 compresses the air inside the sleeve 66 during the movement. The air is gradually compressed and, together with the second spring 67, provides secondary buffering for the connecting rod 62.

[0041] By setting up buffer component 6 and auxiliary component 7, while ensuring the buffering effect on the hydraulic cylinder, the hydraulic cylinder can have the buffer structure installed externally. This reduces the problem of the hydraulic cylinder's stroke being reduced when the buffer structure is installed inside the cylinder body. The stroke of the hydraulic cylinder is effectively guaranteed, and multi-stage buffering is achieved, improving the overall reliability of the hydraulic system.

Claims

1. A multi-buffered hydraulic cylinder, comprising a base (1), characterized in that: A cylinder (2) is fixedly connected to the upper surface of the base (1), a support rod (3) is threadedly connected to the inner wall of the base (1), an end cap (4) is installed on the upper surface of the cylinder (2), the support rod (3) is threadedly connected to the inner wall of the end cap (4), a piston rod (5) is slidably connected to the inner wall of the cylinder (2), the piston rod (5) is slidably connected to the inner wall of the end cap (4), and a buffer assembly (6) is provided on the surface of the end cap (4). The buffer assembly (6) includes a mounting bracket (61), which is fixedly connected to the side surface of the end cap (4). A connecting rod (62) is slidably connected to the inner wall of the mounting bracket (61). A load-bearing ring (63) is fixedly connected to the surface of the connecting rod (62). A first spring (64) is fixedly connected to the lower surface of the load-bearing ring (63). The end of the first spring (64) away from the load-bearing ring (63) is fixedly connected to the lower inner wall of the mounting bracket (61). A connecting frame (65) is fixedly connected to the upper end of the connecting rod (62). The connecting frame (65) is fixedly connected to the surface of the piston rod (5). The buffer assembly (6) further includes a second buffer module consisting of a sleeve (66), a second spring (67), a T-shaped compression sleeve (68), a compression block (69), a closing cover (610), and a fixing frame (611).

2. The hydraulic cylinder with multiple buffers according to claim 1, characterized in that: The sleeve (66) is fixedly connected to the side surface of the base (1). A second spring (67) is fixedly connected to the lower inner wall of the sleeve (66). A T-shaped extrusion sleeve (68) is fixedly connected to the upper end of the second spring (67). The T-shaped extrusion sleeve (68) is slidably connected to the inner wall of the sleeve (66). An extrusion block (69) is fixedly connected to the upper surface of the T-shaped extrusion sleeve (68).

3. A hydraulic cylinder with multiple buffers according to claim 1, characterized in that: The inner wall of the sleeve (66) is threaded with a sealing cap (610), which is sleeved with the surface of the connecting rod (62).

4. A multi-buffered hydraulic cylinder according to claim 1, characterized in that: The cylinder body (2) is fixedly connected to a fixing frame (611), the sleeve (66) is fixedly connected to the surface of the fixing frame (611), and the fixing frame (611) is sleeved to the surface of the support rod (3).

5. A multi-buffered hydraulic cylinder according to claim 1, characterized in that: The connecting rod (62) passes through the lower surface of the mounting bracket (61), the first spring (64) is sleeved on the surface of the connecting rod (62), the connecting rod (62) passes through the upper surface of the load ring (63), and the mounting bracket (61) is sleeved on the surface of the load ring (63).

6. A multi-buffered hydraulic cylinder according to claim 1, characterized in that: The sleeve (66) has air holes on its surface and the sleeve (66) is connected to the inside of the air holes. The connecting rod (62) is inserted into the inner wall of the T-shaped extrusion sleeve (68). The extrusion block (69) is sleeved on the surface of the connecting rod (62) and the extrusion block (69) is slidably connected to the inner wall of the sleeve (66).

7. A multi-buffered hydraulic cylinder according to claim 1, characterized in that: The surface of the cylinder (2) is provided with an auxiliary component (7), the auxiliary component (7) includes a collar (71), the collar (71) is fixedly connected to the surface of the cylinder (2), the surface of the collar (71) is fixedly connected to a guide frame (72), the inner wall of the guide frame (72) is fixedly connected to a damping sleeve (73), the damping sleeve (73) is sleeved with the surface of the connecting rod (62), the upper surface of the collar (71) is fixedly connected to a support block (74), and the support block (74) is fixedly connected to the inner surface of the mounting bracket (61).

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