Hydraulic cylinder buffer retaining device

Abstract

The utility model relates to the technical field of hydraulic cylinder buffering, in particular to a hydraulic cylinder buffering retaining device which comprises a first connecting block, a cylinder body, a second connecting block, a supporting rod and a cylinder rod, the cylinder body is fixedly connected with one end of the first connecting block, and the second connecting block is fixedly connected with one end of the cylinder body far away from the first connecting block. The supporting rod is located between the first connecting block and the second connecting block, the cylinder rod is located in the cylinder body, a buffering device is arranged in the first connecting block and comprises an exhaust hole and a connecting frame, and the exhaust hole is formed in the first connecting block. According to the buffering device, the cylinder rod in the cylinder body is effectively buffered by arranging the buffering device, the buffering effect on equipment is achieved, the situation that when the equipment is used and the cylinder rod in the cylinder body is suddenly and rapidly recycled, the first connecting block in the cylinder body is prone to being collided and damaged, and the equipment is damaged is reduced, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder buffer technology, and in particular to a hydraulic cylinder buffer holding device. Background Technology

[0002] Hydraulic cylinders are commonly used components in engineering machinery. They typically consist of a cylinder body, cylinder barrel, cylinder head, and a piston rod and piston that move within the cylinder body. When hydraulic oil pushes the piston back and forth, the piston can drive the piston rod to reciprocate, thus realizing the action of the hydraulic cylinder.

[0003] Existing technologies, such as patent CN206159164U, disclose a buffer device for a hydraulic cylinder. This patent uses a cylinder barrel and a cylinder head, with an oil hole connected to the cylinder barrel. It includes a piston rod that can move back and forth within the cylinder body, a piston sleeved outside the piston rod, and a buffer sleeve located within the cylinder barrel. The buffer sleeve has a circular insertion hole and buffer holes. The insertion hole is located at the center of the buffer sleeve, and the buffer holes are distributed circumferentially around the insertion hole. The end of the piston rod extends outward to form a buffer column that can be inserted into the insertion hole. This invention solves the problem that in existing devices, due to the high speed of the piston movement and the large kinetic energy during the reciprocating motion of the piston rod, the end of the piston rod impacts the cylinder head when it reaches the cylinder head position, causing damage to both the cylinder head and the piston rod, resulting in a short service life.

[0004] In daily operation, during the use of the equipment, there is a problem that when the cylinder rod inside the cylinder retracts suddenly and quickly, it can easily cause impact damage to the first connecting block inside the cylinder, resulting in equipment damage. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the cylinder rod is prone to impact damage to the inside of the cylinder, and to propose a hydraulic cylinder buffer and holding device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic cylinder buffer holding device, comprising a first connecting block, a cylinder body, a second connecting block, a support rod, and a cylinder rod. The cylinder body is fixedly connected to one end of the first connecting block, and the second connecting block is fixedly connected to the end of the cylinder body away from the first connecting block. The support rod is disposed between the first and second connecting blocks, and the cylinder rod is disposed inside the cylinder body. A buffer device is disposed inside the first connecting block. The buffer device includes an exhaust port and a connecting frame. The exhaust port is opened inside the first connecting block, and the connecting frame is fixedly connected inside the exhaust port. A moving groove is opened inside the first connecting block, and a second connecting rod is slidably connected inside the connecting frame. A buffer block is fixedly connected to one end of the second connecting rod.

[0007] Furthermore, a first connecting rod is fixedly connected to one end of the buffer block near the second connecting rod. The first connecting rod is located inside the moving groove. By setting the first connecting rod and the second connecting rod, the buffer block can be limited in its movement, reducing the likelihood of the buffer block shaking during use and preventing it from clogging the exhaust hole.

[0008] Furthermore, a limit block is fixedly connected to the end of the first connecting rod away from the buffer block, and a positioning block is fixedly connected to the end of the second connecting rod away from the buffer block. The limit block and the positioning block are provided to facilitate the limiting of the first connecting rod and the second connecting rod.

[0009] Furthermore, a first spring is sleeved and connected to the surface of the second connecting rod. The two ends of the first spring are fixedly connected to the surface of the positioning block and the surface of the connecting frame, respectively. The first spring is provided to facilitate the application of a restoring force to the buffer block.

[0010] Furthermore, a protective device is provided on the side of the first connecting block. The protective device includes a connecting groove and a recess. The connecting groove is opened at one end of the exhaust hole, and the recess is opened at the bottom of the connecting groove. A protective plate is provided inside the connecting groove. A movable rod is fixedly connected to one end of the protective plate near the connecting groove. By setting the protective plate, foreign objects entering the exhaust hole can be blocked, reducing the possibility of foreign objects entering the equipment during use and causing blockage and damage inside the equipment.

[0011] Furthermore, the movable rod is slidably connected inside the groove, and a fixing block is fixedly connected to the end of the movable rod away from the protective plate. The movable rod is provided to facilitate the limiting of the protective plate.

[0012] Furthermore, a second spring is sleeved and connected to the surface of the movable rod. The two ends of the second spring are fixedly connected to the surface of the fixed block and the inside of the groove, respectively. The second spring facilitates the application of a restoring force to the movable rod.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a buffer device, when the cylinder rod is rapidly retracted during use, the gas inside the cylinder rod quickly moves the buffer block. When the buffer block moves, it drives the first connecting rod and the second connecting rod to move. Then, the first connecting rod moves inside the moving groove, and then the second connecting rod moves inside the connecting frame. When the second connecting rod moves, it causes the first spring to deform and generate elastic force. Then, the buffer block and the inside of the first connecting block are combined to lock the gas inside the cylinder. By setting a buffer device, the cylinder rod inside the cylinder is effectively buffered, which plays a role in buffering the equipment. It reduces the possibility of impact damage to the first connecting block inside the cylinder when the cylinder rod is suddenly and rapidly retracted during use, which could cause damage to the equipment. This buffer device can quickly compress the gas generated by the rapidly moving cylinder inside the first connecting block for blocking and buffering, thus improving the practicality of the equipment.

[0015] 2. In this utility model, by setting a protective device, when the equipment is in use, the gas is quickly discharged through the exhaust port, and then the gas moves the protective plate. When the protective plate moves, it drives the moving rod to move. When the moving rod moves, it drives the second spring to displace and deform, generating elastic force. By setting a protective device, the internal parts of the equipment are effectively protected, which reduces the possibility of foreign objects entering the exhaust port during use and causing blockage inside the equipment, making it difficult to use normally. This protective device can protect the inside of the cylinder and improve the practicality of the equipment. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a hydraulic cylinder buffer holding device;

[0017] Figure 2 This utility model provides a side view of a hydraulic cylinder buffer holding device.

[0018] Figure 3 This utility model provides a partial structural schematic diagram of a hydraulic cylinder buffer holding device;

[0019] Figure 4 This utility model proposes a hydraulic cylinder buffer holding device. Figure 3 Schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This utility model proposes a hydraulic cylinder buffer holding device. Figure 3 Schematic diagram of the structure at point B.

[0021] Legend: 1. First connecting block; 2. Cylinder body; 3. Second connecting block; 4. Support rod; 5. Cylinder rod; 6. Buffer device; 61. Exhaust port; 62. Connecting frame; 63. Moving groove; 64. Buffer block; 65. First connecting rod; 66. Limiting block; 67. Second connecting rod; 68. Positioning block; 69. First spring; 7. Protective device; 71. Connecting groove; 72. Groove; 73. Protective plate; 74. Moving rod; 75. Fixing block; 76. Second spring. Detailed Implementation

[0022] Please see Figure 1-Figure 5 This utility model provides a technical solution: a hydraulic cylinder buffer holding device, including a first connecting block 1, a cylinder body 2, a second connecting block 3, a support rod 4 and a cylinder rod 5. The cylinder body 2 is fixedly connected to one end of the first connecting block 1, the second connecting block 3 is fixedly connected to the end of the cylinder body 2 away from the first connecting block 1, the support rod 4 is disposed between the first connecting block 1 and the second connecting block 3, and the cylinder rod 5 is disposed inside the cylinder body 2.

[0023] The specific setup and function of its buffer device 6 and protective device 7 will be explained below.

[0024] In this embodiment: A buffer device 6 is provided inside the first connecting block 1. The buffer device 6 includes an exhaust hole 61 and a connecting frame 62. The exhaust hole 61 is opened inside the first connecting block 1. The connecting frame 62 is fixedly connected inside the exhaust hole 61. A moving groove 63 is opened inside the first connecting block 1. A second connecting rod 67 is slidably connected inside the connecting frame 62. A buffer block 64 is fixedly connected to one end of the second connecting rod 67.

[0025] Specifically, the buffer block 64 is fixedly connected to the first connecting rod 65 at one end near the second connecting rod 67, and the first connecting rod 65 is located inside the moving groove 63.

[0026] In this embodiment, by setting the first connecting rod 65 and the second connecting rod 67, the buffer block 64 can be limited to move, which reduces the likelihood of the buffer block 64 shaking during use and makes it difficult for the buffer block 64 to block the exhaust hole 61.

[0027] Specifically, a limiting block 66 is fixedly connected to the end of the first connecting rod 65 away from the buffer block 64, and a positioning block 68 is fixedly connected to the end of the second connecting rod 67 away from the buffer block 64. The limiting block 66 and the positioning block 68 are provided to facilitate the limiting of the first connecting rod 65 and the second connecting rod 67.

[0028] Specifically, a first spring 69 is sleeved and connected to the surface of the second connecting rod 67. The two ends of the first spring 69 are fixedly connected to the surface of the positioning block 68 and the surface of the connecting frame 62, respectively. The first spring 69 is provided to facilitate the application of a restoring force to the buffer block 64.

[0029] In this embodiment: a protective device 7 is provided on the side of the first connecting block 1. The protective device 7 includes a connecting groove 71 and a recess 72. The connecting groove 71 is opened at one end of the vent 61, and the recess 72 is opened at the bottom of the connecting groove 71. A protective plate 73 is provided inside the connecting groove 71. A movable rod 74 is fixedly connected to one end of the protective plate 73 near the connecting groove 71.

[0030] In this embodiment, by setting the protective plate 73, foreign objects entering the exhaust port 61 can be blocked, reducing the possibility of foreign objects entering the equipment during use and causing blockage and damage inside the equipment.

[0031] Specifically, the movable rod 74 is slidably connected inside the groove 72, and a fixing block 75 is fixedly connected to the end of the movable rod 74 away from the protective plate 73. The movable rod 74 is provided to facilitate the limiting of the protective plate 73.

[0032] Specifically, a second spring 76 is sleeved and connected to the surface of the moving rod 74. The two ends of the second spring 76 are fixedly connected to the surface of the fixed block 75 and the inside of the groove 72, respectively. The second spring 76 is provided to facilitate the application of a restoring force to the moving rod 74.

[0033] Working Principle: When the equipment is in use, the gas inside the cylinder rod 5 moves rapidly during rapid retraction, causing the buffer block 64 to move quickly. This movement of the buffer block 64 drives the first connecting rod 65 and the second connecting rod 67 to move as well. The first connecting rod 65 then moves within the moving groove 63, and the second connecting rod 67 moves within the connecting frame 62. The movement of the second connecting rod 67 causes the first spring 69 to deform and generate elastic force. The buffer block 64 then engages with the inside of the first connecting block 1, locking the gas inside the cylinder 2. By setting up the buffer device 6, the cylinder rod 5 inside the cylinder 2 is effectively buffered, thus cushioning the equipment. This reduces the risk of impact damage to the first connecting block 1 inside the cylinder 2 when the cylinder rod 5 suddenly retracts rapidly during use, preventing equipment damage. This buffer device 6 can quickly compress and buffer the gas generated by the rapidly moving cylinder rod 5 inside the first connecting block 1, improving the practicality of the equipment.

[0034] When the equipment is in use, the gas is quickly discharged through the exhaust port 61, and then the gas moves the protective plate 73. When the protective plate 73 moves, it drives the moving rod 74 to move. When the moving rod 74 moves, it drives the second spring 76 to displace and deform, generating elastic force. By setting the protective device 7, the internal parts of the equipment are effectively protected, which reduces the possibility of foreign objects entering the exhaust port 61 during use and causing blockages inside the equipment, making it difficult to use normally. This protective device 7 can protect the inside of the cylinder 2 and improve the practicality of the equipment.

Claims

1. A hydraulic cylinder buffer holding device, comprising a first connecting block (1), a cylinder body (2), a second connecting block (3), a support rod (4), and a cylinder rod (5), characterized in that: The cylinder body (2) is fixedly connected to one end of the first connecting block (1), and the second connecting block (3) is fixedly connected to the end of the cylinder body (2) away from the first connecting block (1). The support rod (4) is located between the first connecting block (1) and the second connecting block (3). The cylinder rod (5) is located inside the cylinder body (2). A buffer device (6) is provided inside the first connecting block (1). The buffer device (6) includes an exhaust hole (61) and a connecting frame (62). The exhaust hole (61) is opened inside the first connecting block (1). The connecting frame (62) is fixedly connected inside the exhaust hole (61). A moving groove (63) is opened inside the first connecting block (1). A second connecting rod (67) is slidably connected inside the connecting frame (62). A buffer block (64) is fixedly connected to one end of the second connecting rod (67).

2. The hydraulic cylinder buffer holding device according to claim 1, characterized in that: The buffer block (64) is fixedly connected to a first connecting rod (65) at one end near the second connecting rod (67), and the first connecting rod (65) is located inside the moving groove (63).

3. A hydraulic cylinder buffer holding device according to claim 2, characterized in that: The end of the first connecting rod (65) away from the buffer block (64) is fixedly connected to a limit block (66), and the end of the second connecting rod (67) away from the buffer block (64) is fixedly connected to a positioning block (68).

4. A hydraulic cylinder buffer holding device according to claim 3, characterized in that: The surface of the second connecting rod (67) is fitted with a first spring (69), and the two ends of the first spring (69) are fixedly connected to the surface of the positioning block (68) and the surface of the connecting frame (62), respectively.

5. A hydraulic cylinder buffer holding device according to claim 1, characterized in that: The first connecting block (1) is provided with a protective device (7) on its side. The protective device (7) includes a connecting groove (71) and a groove (72). The connecting groove (71) is opened at one end of the exhaust hole (61), and the groove (72) is opened at the bottom of the connecting groove (71). A protective plate (73) is provided inside the connecting groove (71), and a moving rod (74) is fixedly connected to one end of the protective plate (73) near the connecting groove (71).

6. A hydraulic cylinder buffer holding device according to claim 5, characterized in that: The movable rod (74) is slidably connected inside the groove (72), and a fixing block (75) is fixedly connected to the end of the movable rod (74) away from the protective plate (73).

7. A hydraulic cylinder buffer holding device according to claim 6, characterized in that: The surface of the movable rod (74) is fitted with a second spring (76), and the two ends of the second spring (76) are fixedly connected to the surface of the fixed block (75) and the inside of the groove (72), respectively.

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