Anti-collision hydraulic oil cylinder

Abstract

The invention discloses an anti-collision hydraulic oil cylinder, and relates to the technical field of hydraulic oil cylinders, the anti-collision hydraulic oil cylinder comprises a cylinder body, and a bottom cover is fixedly mounted at the bottom end of the cylinder body. Hydraulic oil is conveyed into the cylinder body through the oil inlet A, so that the piston A is pushed to slide in the cylinder body to drive the push rod to move outwards, liquid pressure is converted into linear mechanical force, and when the piston A moves in the cylinder body, the hydraulic oil above the piston C is extruded and discharged through the oil inlet B; at the moment, the hydraulic oil can provide extrusion force for a V-shaped notch of an end cover sealing ring, so that the end cover sealing ring is tightly attached to the surface of the push rod, seepage of the hydraulic oil is prevented, the push rod continuously stretches out to drive an ejection block and a side block A to be away from a protection plate, and the protection plate can be driven to move back and forth through the tension effect of a tension spring on a side block B; and the side block B slides in the supporting rod, so that the problem that the push rod is damaged due to collision at the push rod is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, in particular to an anti-collision type hydraulic cylinder. Background Art

[0002] A hydraulic cylinder is a device that uses hydraulic energy to achieve mechanical movement. It is widely used in various engineering and industrial machinery. Its basic function is to convert liquid pressure into linear mechanical force to drive the load.

[0003] For example, the "hydraulic oil cylinder with high buffering performance" with publication number: CN115234541B includes a cylinder barrel and a buffer mechanism, and cylinder heads for sealing the oil inside the cylinder barrel are fixedly installed at both ends of the cylinder barrel, and the buffer mechanism includes a first oil hole, a second oil hole, and a third oil hole opened inside the cylinder head for oil reflux. The present invention provides a buffer mechanism, so that when the boss approaches a cylinder head, the first sealing ring and the second sealing ring are close to each other under the thrust of the oil pressure, and are tightly attached to the outer wall of the boss, thereby reducing the amount of oil entering from the first oil hole. When the boss no longer moves, the first sealing ring and the second sealing ring return to their original positions under the elastic force of the elastic block, and no longer contact the outer wall of the boss, thereby reducing the contact time of the first sealing ring and the second sealing ring with the boss, and extending the service life of the first sealing ring and the second sealing ring.

[0004] However, in the prior art, although this type of hydraulic cylinder can reduce the contact time between the first sealing ring, the second sealing ring and the boss and extend the service life of the first sealing ring and the second sealing ring, it is lacking in anti-collision performance. Since this type of hydraulic cylinder does not have an anti-collision structure, during the processing of the hydraulic cylinder in the factory workshop, the hydraulic cylinder will inevitably be hit by parts in the vehicle or other workpieces or equipment, causing the push rod in the hydraulic cylinder to be bumped and damaged. If the push rod itself is deformed, it may no longer fit tightly with the cylinder body, increasing the risk of leakage. The bump not only affects the push rod, but may also damage the cylinder body, forming cracks or dents, thereby causing oil leakage. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-collision hydraulic cylinder to solve the problem that the hydraulic cylinder proposed in the above background technology is damaged due to the push rod being bumped during operation, which leads to the push rod and the cylinder body no longer fitting tightly, increasing the risk of leakage.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an anti-collision hydraulic cylinder comprises a cylinder body, a bottom cover is fixedly installed on the bottom end of the cylinder body, a top cover is fixedly installed on the top end of the cylinder body, an oil inlet A is opened inside the bottom cover, an oil inlet B is opened inside the top cover, a ring gasket is fixedly installed on the bottom end of the cylinder body, a push rod is arranged inside the cylinder body, a piston A is fixedly installed on the bottom end of the push rod, a piston sealing ring is sleeved on the surface of the piston A, a bottom block is fixedly installed on the bottom surface of the piston A, an end cover sealing ring is fixedly installed inside the top cover, a top block is fixedly installed on the top end of the push rod, a side block A is fixedly installed on the side of the top block, a support rod is fixedly installed on the surface of the top cover, a guard plate is arranged on the outer surface of the cylinder body, a side block B is fixedly installed on the surface of the guard plate, a tension spring is arranged inside the support rod, and a slot A is opened on the top surface of the bottom cover.

[0007] Preferably, the support rod is fixedly connected to the bottom cover, the piston A is slidably connected to the cylinder body, the bottom block is slidably connected to the bottom cover, the bottom block is slidably connected to the ring gasket, and the ring gasket and the piston sealing ring are both made of natural rubber.

[0008] Preferably, the piston sealing ring is slidably connected to the cylinder body, the push rod is slidably connected to the top cover, the push rod is slidably connected to the end cover sealing ring, the end cover sealing ring is in an inverted V shape, and the material of the end cover sealing ring is natural rubber.

[0009] Preferably, the guard plate is slidably connected to the top cover, the guard plate is slidably connected to the slot A, the side block B is slidably connected to the support rod, one end of the tension spring is connected to the inner surface of the support rod, and the other end is connected to the surface of the side block B.

[0010] Preferably, a slot B is provided on the top surface of the top block, a connector A is provided on the top surface of the top block, an insert block A is fixedly installed on the bottom surface of the connector, a slide rod A is slidably connected inside the top block, a fixed block is fixedly installed on one end of the slide rod A, and a pull rod is fixedly installed on the other end, a spring A is sleeved on the surface of the slide rod A, a connector A is provided on the side of the top cover, a connector B is provided on the side of the bottom cover, an oil pipeline A is provided on the surface of the connector A, and an oil pipeline B is provided on the surface of the connector C.

[0011] Preferably, the oil delivery pipe A and the connector B are connected by threads, the oil delivery pipe B and the connector C are connected by threads, the connector A and the oil inlet B are connected, and the connector B and the oil inlet A are connected.

[0012] Preferably, the insert block A is slidably connected to the slot B, the fixed block is slidably connected to the insert block A, one end of the spring A is connected to the inner surface of the top block, and the other end is connected to the surface of the fixed block.

[0013] Preferably, the outer surface of the cylinder body is provided with an outer shell, the inner surface of the outer shell is fixedly installed with a fixing plate, the sides of the top cover and the bottom cover are fixedly installed with side blocks C, the surface of the side block C is provided with a fixing groove, the inside of the fixing plate is slidably connected with a sliding rod B, the surface of the sliding rod B is sleeved with a spring B, one end of the sliding rod B is fixedly installed with an insert block B, and the surface of the insert block B is fixedly installed with a shift block.

[0014] Preferably, the number of the outer shells and side blocks C are two groups, and the two groups of outer shells and side blocks C are symmetrically distributed on both sides of the bottom cover and the top cover, the fixing plate and the side blocks C are slidingly connected, and the insert block B and the fixing groove are slidingly connected.

[0015] Preferably, one end of the spring B is connected to the surface of the plug block B, and the other end is connected to the inner surface of the fixed plate, and the shift block is slidably connected to the housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, hydraulic oil is delivered into the cylinder body through the oil inlet A, thereby driving the push rod to move outward by pushing the piston A to slide inside the cylinder body, thereby converting the liquid pressure into a linear mechanical force. When the piston A moves in the cylinder body, the hydraulic oil above the piston C is squeezed and discharged through the oil inlet B. At this time, the hydraulic oil provides an extrusion force to the V-shaped groove of the end cover sealing ring, so that the end cover sealing ring fits tightly to the surface of the push rod, thereby preventing the hydraulic oil from leaking out. As the push rod continues to extend, the top block and the side block A are driven away from the guard plate, and the guard plate is subjected to the tension of the tension spring through the side block B, so that the side block B slides inside the support rod, thereby avoiding the problem of damage to the push rod due to collision.

[0017] 2. In the present invention, by pulling the pull rod, the pull rod drives the slide bar A to slide outward inside the top block, and the slide bar A drives the fixed block to slide inside the top block. After the fixed block slides out from the inside of the plug block A, the connector A can be pulled out, and the connector A drives the plug block A to slide out from the slot B. Then, the connector A of different models is inserted into the slot B through the plug block A at the bottom. After the insertion is completed, the pull rod is released. At this time, the fixed block is subjected to the elastic force of the spring A and slides inside the top block. After the fixed block is inserted, After being installed in the plug block A, the connector A can be fixed, avoiding the situation where the staff needs to use other special disassembly tools when the connector A needs to be disassembled and replaced, thereby improving the efficiency of replacing the connector A. When the oil pipeline A and the oil pipeline B need to be disassembled, it is only necessary to rotate the nuts on one end of the oil pipeline A and the oil pipeline B. After the nuts and the connector B and the connector C are turned away, the oil pipeline A and the oil pipeline B can be removed, thereby facilitating the disassembly and replacement of the oil pipeline A and the oil pipeline B.

[0018] 3. In the present invention, the shift block is moved to slide on the outer surface of the shell, and the shift block will drive the insertion block B to move when sliding. After the insertion block B slides to the inside of the fixed plate, the shell can be inserted into the inside of the side block C through the fixed plate. After the fixed plate is inserted into the side block C, the shift block can be released. At this time, the insertion block B will slide outward inside the fixed plate due to the elastic force of the spring B. After the insertion block B is inserted into the inside of the side block B, the shell can be fixed on the outer surface of the cylinder body, thereby avoiding the situation where the oil pipeline A, the oil pipeline B or the cylinder body is damaged due to collision or extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an anti-collision hydraulic cylinder of the present invention; Figure 2 A longitudinal cross-sectional view of a cylinder body of an anti-collision hydraulic cylinder of the present invention; Figure 3 The invention provides an anti-collision hydraulic cylinder Figure 2 The enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the explosion structure of the outer shell and the guard plate of an anti-collision hydraulic oil cylinder of the present invention; Figure 5 The invention provides an anti-collision hydraulic cylinder Figure 4 The enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the explosion structure of the middle housing, the pull rod, the connector A, the oil pipeline A and the oil pipeline B of an anti-collision type hydraulic cylinder of the present invention; Figure 7 The invention provides an anti-collision hydraulic cylinder Figure 6 Enlarged view of point C in the middle; Figure 8 It is a schematic diagram of the explosion structure of the outer shell and the plug block B in an anti-collision hydraulic cylinder of the present invention; Fig. 9 The invention provides an anti-collision hydraulic cylinder Figure 8 Enlarged view of point D in the middle.

[0020] In the figure: 100, cylinder body; 101, bottom cover; 102, top cover; 103, oil inlet A; 104, oil inlet B; 105, ring gasket; 106, push rod; 107, piston A; 108, piston seal ring; 109, bottom block; 110, end cover seal ring; 111, top block; 112, side block A; 113, support rod; 114, guard plate; 115, side block B; 116, tension spring; 117, slot A; 200, slot Slot B; 201, plug A; 202, connector A; 203, slide A; 204, fixed block; 205, spring A; 206, pull rod; 207, connector B; 208, connector C; 209, oil pipeline A; 210, oil pipeline B; 300, housing; 301, side block C; 302, fixed slot; 303, fixed plate; 304, slide B; 305, spring B; 306, plug B; 307, shift block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1-5As shown: an anti-collision hydraulic cylinder includes a cylinder body 100, a bottom cover 101 is fixedly installed at the bottom end of the cylinder body 100, a top cover 102 is fixedly installed at the top end of the cylinder body 100, an oil inlet A103 is opened inside the bottom cover 101, an oil inlet B104 is opened inside the top cover 102, a ring gasket 105 is fixedly installed at the bottom end of the cylinder body 100, a push rod 106 is arranged inside the cylinder body 100, a piston A107 is fixedly installed at the bottom end of the push rod 106, and the piston A108 is fixedly installed at the bottom end of the piston A109. The surface of the piston 107 is sleeved with a piston seal ring 108, the bottom surface of the piston A107 is fixedly mounted with a bottom block 109, the interior of the top cover 102 is fixedly mounted with an end cover seal ring 110, the top of the push rod 106 is fixedly mounted with a top block 111, the side of the top block 111 is fixedly mounted with a side block A112, the surface of the top cover 102 is fixedly mounted with a support rod 113, the outer surface of the cylinder body 100 is provided with a guard plate 114, the surface of the guard plate 114 is fixedly mounted with a side block B115, and the support rod 113 is fixedly mounted with a side block B115. A tension spring 116 is arranged inside the rod 113, a slot A117 is provided on the top surface of the bottom cover 101, the support rod 113 is fixedly connected to the bottom cover 101, the piston A107 is slidably connected to the cylinder body 100, the bottom block 109 is slidably connected to the bottom cover 101, the bottom block 109 is slidably connected to the ring gasket 105, the ring gasket 105 and the piston seal 108 are both made of natural rubber, the piston seal 108 is slidably connected to the cylinder body 100, and the push rod 106 is slidably connected to the bottom cover 101. The top cover 102 is slidably connected, the push rod 106 and the end cover sealing ring 110 are slidably connected, the shape of the end cover sealing ring 110 is an inverted V shape, and the material of the end cover sealing ring 110 is natural rubber, the piston sealing ring 108 and the cylinder body 100 are slidably connected, the push rod 106 and the top cover 102 are slidably connected, the push rod 106 and the end cover sealing ring 110 are slidably connected, the shape of the end cover sealing ring 110 is an inverted V shape, and the material of the end cover sealing ring 110 is natural rubber.

[0023] In this embodiment, hydraulic oil is delivered into the cylinder 100 through the oil inlet A103, thereby driving the push rod 106 to move outward by pushing the piston A107 to slide inside the cylinder 100, thereby converting the liquid pressure into a linear mechanical force. When the piston A107 moves in the cylinder 100, the hydraulic oil above the piston C is squeezed and discharged through the oil inlet B104. At this time, the hydraulic oil provides squeezing force to the V-shaped groove of the end cover sealing ring 110, so that the end cover sealing ring 110 is tightly attached to the surface of the push rod 106, thereby preventing the leakage of the hydraulic oil. As the push rod 106 is continuously extended, the top block 111 and the side block A112 are driven away from the guard plate 114, and the guard plate 114 is pulled by the tension spring 116 through the side block B115, so that the side block B115 slides inside the support rod 113, thereby driving the slide plate to slide outward inside the top cover 102 until the top of the guard plate 114 is attached to the bottom surface of the side block A112, thereby avoiding the problem of the push rod 106 being damaged due to collision. The hydraulic oil is delivered to the interior of the cylinder 100 through the oil inlet B104, and the hydraulic oil will squeeze the piston C, thereby driving the push rod 106 to slide into the cylinder 100 through the piston C, and the piston C will discharge the hydraulic oil at the bottom of the piston C through the oil inlet A103 via the piston sealing ring 108 until the bottom block 109 contacts the ring gasket 105. At this time, the piston C will also drive the push rod 106 to slide inside the cylinder 100 and the top cover 102, thereby driving the top block 111 and the side block A112 to move toward the cylinder 100. At this time, the side block A112 will fit on the top of the guard plate 114 and drive the guard plate 114 to move toward the inside of the top cover 102 until the guard plate 114 is inserted into the slot A117.

[0024] Embodiment 2: Figure 6-7 As shown, a slot B200 is provided on the top surface of the top block 111, a connector A202 is provided on the top surface of the top block 111, an insert block A201 is fixedly installed on the bottom surface of the connector, a slide rod A203 is slidably connected inside the top block 111, a fixed block 204 is fixedly installed on one end of the slide rod A203, and a pull rod 206 is fixedly installed on the other end, a spring A205 is sleeved on the surface of the slide rod A203, a connector A202 is provided on the side of the top cover 102, a connector B207 is provided on the side of the bottom cover 101, and an oil delivery pipe A209 is provided on the surface of the connector A202 An oil pipe B210 is arranged on the surface of the connector C208, the oil pipe A209 is connected to the connector B207 by threads, the oil pipe B210 is connected to the connector C208 by threads, the connector A202 is connected to the oil inlet B104, the connector B207 is connected to the oil inlet A103, the plug block A201 is connected to the slot B200 by sliding, the fixed block 204 is connected to the plug block A201 by sliding, one end of the spring A205 is connected to the inner surface of the top block 111, and the other end is connected to the surface of the fixed block 204.

[0025] In this embodiment, by pulling the pull rod 206, the pull rod 206 drives the slide bar A203 to slide outward inside the top block 111, and the slide bar A203 drives the fixed block 204 to slide inside the top block 111. After the fixed block 204 slides out from the inside of the plug block A201, the connector A202 can be pulled out, and the connector A202 drives the plug block A201 to slide out from the slot B200. Then, different types of connectors A202 can be inserted through the plug block at the bottom. A201 is inserted into the slot B200. After the insertion is completed, the pull rod 206 is loosened. At this time, the fixing block 204 is subjected to the elastic force of the spring A205 and slides inside the top block 111. After the fixing block 204 is inserted into the insertion block A201, the connector A202 can be fixed. This avoids the need for workers to use other special disassembly tools when the connector A202 needs to be disassembled and replaced, thereby improving the efficiency of replacing the connector A202. When it is necessary to disassemble the oil pipeline A209 and the oil pipeline B210, it is only necessary to rotate the nut on one end of the oil pipeline A209 and the oil pipeline B210. After the nut and the connector B207 and the connector C208 are turned apart, the oil pipeline A209 and the oil pipeline B210 can be removed, thereby facilitating the disassembly and replacement of the oil pipeline A209 and the oil pipeline B210.

[0026] Embodiment 3: According to Figure 8-9 As shown, the outer surface of the cylinder body 100 is provided with a shell 300, the inner surface of the shell 300 is fixedly installed with a fixing plate 303, the sides of the top cover 102 and the bottom cover 101 are fixedly installed with side blocks C301, the surface of the side block C301 is provided with a fixing groove 302, the interior of the fixing plate 303 is slidably connected with a slide bar B304, the surface of the slide bar B304 is sleeved with a spring B305, one end of the slide bar B304 is fixedly installed with an insert block B306, and the surface of the insert block B306 is fixedly installed A shift block 307 is installed, and there are two groups of shells 300 and side blocks C301. The two groups of shells 300 and side blocks C301 are symmetrically distributed on both sides of the bottom cover 101 and the top cover 102. The fixed plate 303 and the side block C301 are slidingly connected, the plug block B306 and the fixed groove 302 are slidingly connected, one end of the spring B305 is connected to the surface of the plug block B306, and the other end is connected to the inner surface of the fixed plate 303, and the shift block 307 and the shell 300 are slidingly connected.

[0027] In this embodiment, the shifting block 307 is moved to slide on the outer surface of the housing 300, and the shifting block 307 drives the inserting block B306 to move when sliding. After the inserting block B306 slides to the inside of the fixing plate 303, the housing 300 can be inserted into the inside of the side block C301 through the fixing plate 303. After the fixing plate 303 is inserted into the side block C301, the shifting block 307 can be released. At this time, the inserting block B306 will slide outward inside the fixing plate 303 under the elastic force of the spring B305. After the inserting block B306 is inserted into the inside of the side block B115, the housing 300 can be fixed on the outer surface of the cylinder body 100, thereby avoiding the situation that the oil pipeline A209, the oil pipeline B210 or the cylinder body 100 is collided or squeezed to cause the cylinder body 100 to be damaged; By moving the shift block 307, the shift block 307 slides on the surface of the shell 300, and the shift block 307 will drive the plug block B306 to slide inside the fixed plate 303 when sliding. After the plug block B306 slides out from the inside of the side block C301, the shell 300 can be pulled out, and the shell 300 will drive the fixed plate 303 to slide out from the inside of the side block C301, thereby completing the disassembly of the shell 300, avoiding the need for workers to use disassembly tools when disassembling and assembling the shell 300, and also achieving the desired effect of facilitating the maintenance and repair of the cylinder body 100.

[0028] The use method and working principle of the device: when the top block 111 needs to be extended out of the cylinder body 100, it is only necessary to deliver the hydraulic oil into the cylinder body 100 through the oil inlet A103, thereby pushing the piston A107 to slide inside the cylinder body 100 and driving the push rod 106 to move outward, thereby converting the liquid pressure into a linear mechanical force. When the piston A107 moves in the cylinder body 100, the hydraulic oil above the piston C will be squeezed and discharged through the oil inlet B104. At this time, the hydraulic oil will provide squeezing force to the V-shaped groove of the end cover sealing ring 110, so that the end cover sealing ring 110 is tightly attached to the surface of the push rod 106, thereby preventing the leakage of the hydraulic oil; As the push rod 106 is continuously extended, the top block 111 and the side block A112 are driven away from the guard plate 114, and the guard plate 114 is pulled by the tension spring 116 through the side block B115, so that the side block B115 slides inside the support rod 113, thereby driving the slide plate to slide outward inside the top cover 102 until the top of the guard plate 114 is attached to the bottom surface of the side block A112, thereby avoiding the problem of the push rod 106 being damaged due to collision. When it is necessary to retract the top block 111 into the cylinder body 100, it is only necessary to deliver the hydraulic oil into the cylinder body 100 through the oil inlet B104. The hydraulic oil will squeeze the piston C, thereby driving the push rod 106 to slide into the cylinder body 100 through the piston C, and the piston C will discharge the hydraulic oil at the bottom of the piston C through the oil inlet A103 through the piston sealing ring 108 until the bottom block 109 contacts the ring gasket 105. At this time, the piston C will also drive the push rod 106 to slide inside the cylinder body 100 and the top cover 102, thereby driving the top block 111 and the side block A112 to move toward the cylinder body 100. At this time, the side block A112 will fit on the top of the guard plate 114 and drive the guard plate 114 to move toward the inside of the top cover 102 until the guard plate 114 is inserted into the slot A117. When the connector A202 needs to be disassembled, it is only necessary to pull the pull rod 206, thereby driving the slide bar A203 to slide outward inside the top block 111 through the pull rod 206, and the slide bar A203 will drive the fixed block 204 to slide inside the top block 111. After the fixed block 204 slides out from the inside of the plug block A201, the connector A202 can be pulled out, and the connector A202 will drive the plug block A201 to slide out from the slot B200, and then different types of connectors A202 can be inserted through The plug block A201 at the bottom is inserted into the slot B200. After the insertion is completed, the pull rod 206 is loosened. At this time, the fixing block 204 is subjected to the elastic force of the spring A205 and slides inside the top block 111. After the fixing block 204 is inserted into the plug block A201, the connector A202 can be fixed. This avoids the need for workers to use other special disassembly tools when the connector A202 needs to be disassembled and replaced, thereby improving the efficiency of replacing the connector A202. When the oil pipeline A209 and the oil pipeline B210 need to be disassembled, it is only necessary to rotate the nut on one end of the oil pipeline A209 and the oil pipeline B210, and the oil pipeline A209 and the oil pipeline B210 can be disassembled after the nut and the connector B207 and the connector C208 are turned away, thereby facilitating the disassembly and replacement of the oil pipeline A209 and the oil pipeline B210; When the housing 300 needs to be installed, the shifting block 307 only needs to be shifted so that the shifting block 307 slides on the outer surface of the housing 300, and the shifting block 307 will drive the plug block B306 to move when sliding. After the plug block B306 slides to the inside of the fixing plate 303, the housing 300 can be inserted into the inside of the side block C301 through the fixing plate 303. After the fixing plate 303 is inserted into the side block C301, the shifting block 307 can be released. At this time, the plug block B306 will slide outward inside the fixing plate 303 under the elastic force of the spring B305. After the plug block B306 is inserted into the inside of the side block B115, the housing 300 can be fixed on the outer surface of the cylinder body 100, thereby avoiding the oil pipeline A209, the oil pipeline B210 or the cylinder body 100 from being damaged by collision or extrusion. When it is necessary to disassemble the shell 300 and perform maintenance and repair on the cylinder body 100, it is only necessary to reverse the shift block 307 so that the shift block 307 slides in the opposite direction on the surface of the shell 300. When the shift block 307 slides, it will drive the plug block B306 to slide inside the fixed plate 303. After the plug block B306 slides out from the inside of the side block C301, the shell 300 can be pulled outward, and the shell 300 will drive the fixed plate 303 to slide out from the inside of the side block C301, thereby completing the disassembly of the shell 300, avoiding the need for workers to use disassembly tools when disassembling and assembling the shell 300, and also achieving the desired effect of facilitating the maintenance and repair of the cylinder body 100.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-collision hydraulic cylinder, comprising a cylinder body (100), characterized in that: A bottom cover (101) is fixedly mounted on the bottom end of the cylinder body (100), a top cover (102) is fixedly mounted on the top end of the cylinder body (100), an oil inlet A (103) is provided inside the bottom cover (101), an oil inlet B (104) is provided inside the top cover (102), a ring gasket (105) is fixedly mounted on the bottom end of the cylinder body (100), a push rod (106) is provided inside the cylinder body (100), a piston A (107) is fixedly mounted on the bottom end of the push rod (106), a piston sealing ring (108) is sleeved on the surface of the piston A (107), and the bottom surface of the piston A (107) is A bottom block (109) is fixedly installed, an end cover sealing ring (110) is fixedly installed inside the top cover (102), a top block (111) is fixedly installed on the top end of the push rod (106), a side block A (112) is fixedly installed on the side of the top block (111), a support rod (113) is fixedly installed on the surface of the top cover (102), a guard plate (114) is provided on the outer surface of the cylinder body (100), a side block B (115) is fixedly installed on the surface of the guard plate (114), a tension spring (116) is provided inside the support rod (113), and a slot A (117) is provided on the top surface of the bottom cover (101).

2. The anti-collision hydraulic cylinder according to claim 1, characterized in that: The support rod (113) is fixedly connected to the bottom cover (101), the piston A (107) is slidably connected to the cylinder body (100), the bottom block (109) is slidably connected to the bottom cover (101), and the bottom block (109) is slidably connected to the gasket (105). The gasket (105) and the piston seal (108) are both made of natural rubber.

3. The anti-collision hydraulic cylinder according to claim 1, characterized in that: The piston sealing ring (108) is slidably connected to the cylinder body (100), the push rod (106) is slidably connected to the top cover (102), and the push rod (106) is slidably connected to the end cover sealing ring (110). The end cover sealing ring (110) is in an inverted V shape and is made of natural rubber.

4. The anti-collision hydraulic cylinder according to claim 1, characterized in that: The guard plate (114) is slidably connected to the top cover (102), the guard plate (114) is slidably connected to the slot A (117), the side block B (115) is slidably connected to the support rod (113), one end of the tension spring (116) is connected to the inner surface of the support rod (113), and the other end is connected to the surface of the side block B (115).

5. The anti-collision hydraulic cylinder according to claim 1, characterized in that: A slot B (200) is provided on the top surface of the top block (111), a connector A (202) is provided on the top surface of the top block (111), an insert block A (201) is fixedly installed on the bottom surface of the connector, a slide rod A (203) is slidably connected inside the top block (111), a fixed block (204) is fixedly installed on one end of the slide rod A (203), and a pull rod (206) is fixedly installed on the other end, a spring A (205) is sleeved on the surface of the slide rod A (203), a connector A (202) is provided on the side of the top cover (102), a connector B (207) is provided on the side of the bottom cover (101), an oil pipeline A (209) is provided on the surface of the connector A (202), and an oil pipeline B (210) is provided on the surface of the connector C (208).

6. The anti-collision hydraulic cylinder according to claim 5, characterized in that: The oil delivery pipe A (209) and the connector B (207) are connected by threads, the oil delivery pipe B (210) and the connector C (208) are connected by threads, the connector A (202) and the oil inlet B (104) are connected, and the connector B (207) and the oil inlet A (103) are connected.

7. The anti-collision hydraulic cylinder according to claim 5, characterized in that: The insert block A (201) is slidably connected to the slot B (200), the fixed block (204) is slidably connected to the insert block A (201), one end of the spring A (205) is connected to the inner surface of the top block (111), and the other end is connected to the surface of the fixed block (204).

8. The anti-collision hydraulic cylinder according to claim 1, characterized in that: The outer surface of the cylinder body (100) is provided with a shell (300), the inner surface of the shell (300) is fixedly mounted with a fixing plate (303), the sides of the top cover (102) and the bottom cover (101) are fixedly mounted with side blocks C (301), the surface of the side block C (301) is provided with a fixing groove (302), the interior of the fixing plate (303) is slidably connected with a slide bar B (304), the surface of the slide bar B (304) is sleeved with a spring B (305), one end of the slide bar B (304) is fixedly mounted with an insert block B (306), and the surface of the insert block B (306) is fixedly mounted with a shift block (307).

9. The anti-collision hydraulic cylinder according to claim 8, characterized in that: The number of the outer shells (300) and the side blocks C (301) is two sets, and the two sets of outer shells (300) and side blocks C (301) are symmetrically distributed on both sides of the bottom cover (101) and the top cover (102), the fixing plate (303) and the side blocks C (301) are slidably connected, and the insert block B (306) and the fixing groove (302) are slidably connected.

10. The anti-collision hydraulic cylinder according to claim 8, characterized in that: One end of the spring B (305) is connected to the surface of the insert block B (306), and the other end is connected to the inner surface of the fixing plate (303). The shifting block (307) is slidably connected to the housing (300).

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