Anti-collision hydraulic oil cylinder

Abstract

The utility model provides an anti-collision hydraulic oil cylinder which comprises a hydraulic oil cylinder body, protective clamping blocks are arranged at the upper end and the lower end of the hydraulic oil cylinder body respectively, the protective clamping blocks are connected with the hydraulic oil cylinder body in a clamped and embedded mode through fixing bolts arranged in the middles, a connecting groove is formed in the inner side of the protective clamping block at the upper end, and a connecting pipe is installed in the connecting groove in an embedded mode. And a sealing cover is installed above the hydraulic oil cylinder in a nested mode, the connecting pipe and the sealing cover are arranged in a through connection mode, a telescopic rod is installed on the outer side of the protective clamping block in an embedded mode, and the telescopic rod and the connecting pipe are connected in a through mode. When the periphery of the hydraulic oil cylinder is collided, the protective sleeve extrudes and buffers the buffering bag, oil in the buffering bag is extruded back into the hydraulic oil cylinder through the telescopic rod and the connecting pipe at the moment, and then the oil extruded back into the buffering bag can push the piston push block to move in the hydraulic oil cylinder, so that the extending hydraulic rod retracts into the hydraulic oil cylinder; therefore, the hydraulic rod is prevented from being deformed and damaged due to external force collision.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically an anti-collision hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a device that converts the pressure of a liquid into mechanical force through hydraulic transmission to achieve linear motion. Hydraulic cylinders are commonly used in various mechanical equipment, engineering machinery, metallurgical equipment, automotive and aerospace industries for pushing, lifting, clamping, locking, or other linear motion operations. By controlling the hydraulic flow and pressure of the hydraulic system, the operation and control of the hydraulic cylinder can be achieved. Hydraulic cylinders are characterized by high power density, adjustable speed, stable torque, and high reliability, and are widely used in industrial production and mechanical equipment operation.

[0003] The "anti-collision hydraulic cylinder for extruders" described in patent application number "CN202322803615.5" has a cylinder body with a diameter larger than the inner diameter of the guide sleeve located outside the guide sleeve. Therefore, when the cylinder body is fitted onto the flat body, there is a gap between the cylinder body and the flat body. After the cylinder body is fitted, the guide sleeve never contacts the flat body, thus avoiding the risk of the sealing ring on the guide sleeve being scratched.

[0004] However, when hydraulic cylinders are in use, the hydraulic rod converts the pressure of the liquid into mechanical force to achieve linear motion. When the hydraulic rod extends and encounters an impact from an external force during operation, the relatively long extension of the hydraulic rod results in a relatively distant stress point, leading to uneven distribution of force and excessive local pressure load. Under the combined action of hydraulic pressure and external force, the hydraulic rod is prone to bending deformation. This deformation not only damages the structural integrity of the hydraulic rod but may also further affect the normal operation and performance of the hydraulic cylinder. Furthermore, when components of the hydraulic cylinder are damaged by external impact, it is not easy to replace the damaged parts.

[0005] Therefore, we provide an anti-collision hydraulic cylinder. Utility Model Content

[0006] The main purpose of this utility model is to provide an anti-collision hydraulic cylinder, which can effectively solve the problem mentioned in the background art that when the hydraulic rod is hit by an external force during operation, it is prone to bending deformation under the combined action of hydraulic pressure and external force. This deformation not only damages the structural integrity of the hydraulic rod, but may also further affect the normal operation and performance of the hydraulic cylinder.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An anti-collision hydraulic cylinder includes a hydraulic cylinder with protective clamping blocks at its upper and lower ends. The protective clamping blocks are clamped and fitted to the hydraulic cylinder by a fixing bolt in the middle. The upper protective clamping block has a connecting groove on its inner side, and a connecting pipe is fitted into the connecting groove. A sealing cover is nested on the upper part of the hydraulic cylinder, and the connecting pipe and the sealing cover are connected through the groove. A telescopic rod is fitted on the outer side of the protective clamping block, and the telescopic rod is connected through the connecting pipe. A fixing plate is fixedly connected to one side of the telescopic rod, and a protective sleeve is movably installed on the outer side of the fixing plate. The protective sleeve has a buffer bag inside, and the buffer bag is connected through the fixing plate to the telescopic rod.

[0009] In the above scheme, preferably, a piston push block is movably installed inside the hydraulic cylinder, and a hydraulic rod is fixedly connected to one side of the piston push block, and the hydraulic rod and the sealing cover are movably connected in an interlocking manner.

[0010] In the above scheme, preferably, the inner side of the lower protective clamp is provided with an oil tank, and an oil pipe is connected through the lower part of the hydraulic cylinder, and the oil pipe is fitted into the inner side of the oil tank.

[0011] In the above scheme, preferably, the protective sleeve is provided with limiting pieces on both sides, and the limiting pieces are movably fitted to one side of the fixing plate.

[0012] In the above scheme, preferably, there are four telescopic rods, and the four telescopic rods are equidistantly arranged around the four sides of the protective clamping block. The connecting pipe is arranged correspondingly to the telescopic rods, and the buffer bag is connected to the connecting pipe through the telescopic rods.

[0013] In the above scheme, preferably, the fixing bolt is provided with fixing nuts on both sides, and the protective clamping block is set to clamp the hydraulic cylinder by the fixing bolt and the fixing nuts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This type of anti-collision hydraulic cylinder is equipped with a protective sleeve, a buffer bag, and a telescopic rod. When the hydraulic cylinder is subjected to a collision, the protective sleeve squeezes the buffer bag to cushion the impact. At this time, the oil in the buffer bag is squeezed back into the hydraulic cylinder through the telescopic rod and connecting pipe. This allows the oil squeezed back from the buffer bag to push the piston block to move within the hydraulic cylinder, thereby retracting the extended hydraulic rod into the hydraulic cylinder. This prevents the extended hydraulic rod from being deformed and damaged by external impact.

[0016] This type of anti-collision hydraulic cylinder is equipped with protective sleeves, buffer bags, and telescopic rods. It is clamped and fixed by protective blocks at both ends of the hydraulic cylinder to protect both ends. When the hydraulic cylinder is subjected to external force collision, the protective sleeve provides anti-collision protection and squeezes the internal buffer bag to absorb the impact force. At the same time, some of the impact force is dispersed to the fixed plate through the buffer bag and squeezed and buffered by the fixed plate to further reduce the direct damage of the impact to the hydraulic cylinder.

[0017] This type of anti-collision hydraulic cylinder is equipped with protective clamps, fixing bolts, and sealing caps. By removing the fixing bolts from the protective clamps, and then removing the telescopic rod from the protective clamps, the connection between the telescopic rod and the connecting pipe can be severed, facilitating the replacement of the impact-damaged protective sleeve on the telescopic rod. After removing the fixing bolts from the protective clamps, the protective clamps can be removed from both ends of the hydraulic cylinder, making it easier to open the sealing cap on the hydraulic cylinder for replacement of the piston push block and hydraulic rod inside the hydraulic cylinder. It also facilitates the replacement of the oil pipe below the hydraulic cylinder. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a partial cross-sectional schematic diagram of the hydraulic cylinder of this utility model.

[0021] Figure 3 This is a partial structural disassembly diagram of the protective sleeve of this utility model.

[0022] Figure 4 This is a partial structural disassembly diagram of the protective clamping block of this utility model.

[0023] Figure 5 This is a schematic diagram of the connection structure of the connecting pipe of this utility model.

[0024] Figures 1-5In the middle: 1. Hydraulic cylinder; 101. Oil pipe; 102. Sealing cover; 2. Protective clamp; 201. Connecting pipe; 202. Connecting groove; 203. Oil tank; 3. Fixing bolt; 4. Telescopic rod; 5. Fixing plate; 6. Protective sleeve; 601. Buffer bag; 7. Hydraulic rod; 701. Piston push block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figures 1-5 As shown, in this embodiment, an anti-collision hydraulic cylinder includes a hydraulic cylinder 1. The upper and lower ends of the hydraulic cylinder 1 are respectively provided with protective clamping blocks 2. The inner side of the upper protective clamping block 2 is provided with a connecting groove 202, and a connecting pipe 201 is fitted inside the connecting groove 202. A telescopic rod 4 is fitted outside the protective clamping block 2, and the telescopic rod 4 is connected to the connecting pipe 201. A fixing plate 5 is fixedly connected to one side of the telescopic rod 4, and a protective sleeve 6 is nested and movably installed on the outer side of the fixing plate 5. A buffer bag 601 is provided inside the protective sleeve 6, and the buffer bag 601 is connected to the telescopic rod 4 through the fixing plate 5.

[0027] Specifically, with this configuration, during use, the hydraulic cylinder 1 is clamped and fixed by the protective clamps 2 at both ends to protect both ends of the hydraulic cylinder 1. Since the hydraulic cylinder 1 is fitted between the two protective clamps 2, the upper protective clamp 2 clamps and holds the sealing cover 102, thereby improving the hydraulic sealing effect of the sealing cover 102 on the hydraulic cylinder 1 and reducing the risk of oil leakage. When the hydraulic cylinder 1 is impacted by external force, the protective sleeve 6 provides anti-collision protection, and the protective sleeve 6 squeezes and buffers the internal buffer bag 601 to absorb the impact force. At the same time, some of the impact force is dispersed to the fixing plate 5 through the buffer bag 601, and the fixing plate 5 squeezes and buffers the telescopic rod 4, thereby further reducing the direct damage of the impact to the hydraulic cylinder 1.

[0028] like Figures 1-5 As shown, in this embodiment, there are four telescopic rods 4, and the four telescopic rods 4 are equidistantly arranged around the four sides of the protective clamping block 2. The connecting pipe 201 is correspondingly arranged with the telescopic rods 4, and the buffer bag 601 is connected to the connecting pipe 201 through the telescopic rods 4. The protective sleeve 6 is provided with limiting plates on both sides, and the limiting plates are fitted and movable with one side of the fixing plate 5. The piston push block 701 is fitted and movablely installed on the inner side of the hydraulic cylinder 1. The hydraulic rod 7 is fixedly connected to one side of the piston push block 701, and the hydraulic rod 7 is fitted and movablely connected with the sealing cover 102.

[0029] Specifically, with this setup, the oil pipe 101 is installed and used through the oil tank 203, and the connecting pipe 201 is installed and used through the connecting groove 202. In use, an external hydraulic pump is connected to the oil pipe 101 to input or extract oil into the hydraulic cylinder 1. The oil then pushes the piston pusher 701, causing the hydraulic rod 7 to extend and retract. When the hydraulic cylinder 1 is subjected to collisions, the flow of fluid into the hydraulic cylinder 1 through the oil pipe 101 stops. The protective sleeve 6 then cushions the impact by compressing the buffer bag 601. The oil inside is squeezed back into the hydraulic cylinder 1 through the telescopic rod 4 and the connecting pipe 201. Since the connecting pipe 201 is connected to the sealing cover 102 and is located on one side of the piston push block 701, the oil squeezed back from the buffer bag 601 can push the piston push block 701 to move in the hydraulic cylinder 1, so as to retract the extended hydraulic rod 7 into the hydraulic cylinder 1, thereby preventing the hydraulic rod 7 from being deformed and damaged by external impact due to its extended length. Secondly, the protective sleeve 6 is limited by the limiting piece on one side of the protective sleeve 6 to prevent the protective sleeve 6 from falling off the fixing plate 5.

[0030] like Figures 1-5 As shown, in this embodiment, an oil groove 203 is provided on the inner side of the lower protective clamping block 2. An oil pipe 101 is connected through the lower part of the hydraulic cylinder 1, and the oil pipe 101 is fitted into the inner side of the oil groove 203. A sealing cover 102 is nested on the upper part of the hydraulic cylinder 1, and the connecting pipe 201 and the sealing cover 102 are connected through the connection. The protective clamping block 2 clamps and fits the hydraulic cylinder 1 through the fixing bolt 3 provided in the middle. Fixing nuts are provided on both sides of the fixing bolt 3, and the protective clamping block 2 clamps and fits the hydraulic cylinder 1 through the fixing bolt 3 and the fixing nuts.

[0031] Specifically, with this setup, during use, the fixing nut is removed from the fixing bolt 3, thereby canceling the fixing of the fixing bolt 3 to the protective clamp 2. Next, the telescopic rod 4 is removed from the protective clamp 2, thereby canceling the connection between the telescopic rod 4 and the connecting pipe 201, so as to replace the protective sleeve 6 on the telescopic rod 4 that is impacted. After the fixing bolt 3 is removed from the protective clamp 2, the protective clamp 2 can be removed from both ends of the hydraulic cylinder 1, thereby facilitating the opening of the sealing cover 102 on the hydraulic cylinder 1, so as to replace the piston push block 701 and hydraulic rod 7 inside the hydraulic cylinder 1. At the same time, it is also convenient to replace the oil pipe 101 below the hydraulic cylinder 1.

[0032] It should be noted that when using this utility model as an anti-collision hydraulic cylinder, firstly, an external hydraulic pump is connected to the oil pipe 101 to input or extract oil into the hydraulic cylinder 1. Then, the oil pushes the piston push block 701 to cause the hydraulic rod 7 to extend and retract. The protective clamps 2 at both ends of the hydraulic cylinder 1 are used to clamp and fix it, thus protecting both ends of the hydraulic cylinder 1. The upper protective clamp 2 is used to fit and clamp the sealing cover 102, thereby improving the hydraulic sealing effect of the sealing cover 102 on the hydraulic cylinder 1. When the hydraulic cylinder 1 is impacted by external force, the protective sleeve 6 provides anti-collision protection, and the protective sleeve 6 squeezes and buffers the internal buffer bag 601 to absorb the impact force. At the same time, some of the impact force is dispersed to the fixing plate 5 through the buffer bag 601, and the fixing plate 5 squeezes and buffers the telescopic rod 4, thereby reducing the direct damage of the impact to the hydraulic cylinder 1. When the hydraulic cylinder 1 is impacted, the oil in the buffer bag 601 flows through the telescopic rod 4 and the connecting pipe 2. 01. The oil is squeezed back into the hydraulic cylinder 1, which in turn allows the oil squeezed back from the buffer bag 601 to push the piston pusher 701 to move within the hydraulic cylinder 1, thereby retracting the extended hydraulic rod 7 into the hydraulic cylinder 1. This prevents the extended hydraulic rod 7 from being deformed and damaged by external impact. Secondly, the protective sleeve 6 is limited by a limiting piece on one side to prevent it from falling off the fixing plate 5. The fixing nut is removed from the fixing bolt 3, thus removing the fixing bolt 3 from the protective clamping block 2. Next, remove the telescopic rod 4 from the protective clamp 2, thereby disconnecting the telescopic rod 4 from the connecting pipe 201. This facilitates the replacement of the protective sleeve 6 on the telescopic rod 4 that has been impacted. After removing the fixing bolts 3 from the protective clamp 2, the protective clamp 2 can be removed from both ends of the hydraulic cylinder 1. This makes it easier to open the sealing cover 102 on the hydraulic cylinder 1 to replace the piston push block 701 and hydraulic rod 7 inside the hydraulic cylinder 1. It also facilitates the replacement of the oil pipe 101 below the hydraulic cylinder 1.

[0033] The preferred embodiments of the present invention disclosed above are merely illustrative of the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific implementations. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely outlining the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-collision hydraulic cylinder, comprising a hydraulic cylinder (1), characterized in that: The upper and lower ends of the hydraulic cylinder (1) are respectively provided with protective clamping blocks (2), and the protective clamping blocks (2) are clamped and fitted to the hydraulic cylinder (1) by the fixing bolt (3) provided in the middle. The upper protective clamping block (2) is provided with a connecting groove (202) on the inner side, and a connecting pipe (201) is installed in the connecting groove (202). A sealing cover (102) is nested on the upper part of the hydraulic cylinder (1), and the connecting pipe (201) and the sealing cover (102) are connected through. A telescopic rod (4) is installed on the outer side of the protective clamping block (2), and the telescopic rod (4) is connected through to the connecting pipe (201). A fixing plate (5) is fixedly connected to one side of the telescopic rod (4), and a protective sleeve (6) is nested and movably installed on the outer side of the fixing plate (5). A buffer bag (601) is provided inside the protective sleeve (6), and the buffer bag (601) is connected through to the telescopic rod (4) by the fixing plate (5).

2. The anti-collision hydraulic cylinder according to claim 1, characterized in that, A piston pusher block (701) is movably mounted inside the hydraulic cylinder (1). A hydraulic rod (7) is fixedly connected to one side of the piston pusher block (701), and the hydraulic rod (7) and the sealing cover (102) are movably connected in an interlocking manner.

3. The anti-collision hydraulic cylinder according to claim 1, characterized in that, The lower protective clamp (2) has an oil tank (203) on its inner side, and an oil pipe (101) is connected through the lower part of the hydraulic cylinder (1), and the oil pipe (101) is fitted into the inner side of the oil tank (203).

4. The anti-collision hydraulic cylinder according to claim 1, characterized in that, The protective sleeve (6) is provided with limiting pieces on both sides, and the limiting pieces are in contact with one side of the fixing plate (5).

5. The anti-collision hydraulic cylinder according to claim 1, characterized in that, The telescopic rod (4) is provided with four rods, and the four telescopic rods (4) are equidistantly arranged around the four sides of the protective clamp (2). The connecting pipe (201) is provided corresponding to the telescopic rod (4), and the buffer bag (601) is connected to the connecting pipe (201) through the telescopic rod (4).

6. The anti-collision hydraulic cylinder according to claim 1, characterized in that, The fixing bolt (3) is provided with fixing nuts on both sides, and the protective clamp (2) clamps the hydraulic cylinder (1) by means of the fixing bolt (3) and the fixing nuts.

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