Hydraulic oil cylinder replacing device

Abstract

The utility model relates to the technical field of metallurgical equipment, and discloses a hydraulic oil cylinder replacing device which comprises a frame body, a lifting rod, a supporting rod and a locking piece. Wherein the frame body is provided with a supporting arm extending in the first direction, and the supporting arm is provided with a limiting sleeve extending in the second direction; the lifting rod is connected with the frame body through a fulcrum, and a guide groove distributed in the length direction of the lifting rod is formed in the first end of the lifting rod. The supporting rod extends in the second direction and penetrates through the limiting sleeve, a bearing disc assembly is installed at the top end of the supporting rod, the bearing disc assembly is used for containing a hydraulic oil cylinder and can drive the hydraulic oil cylinder to rotate, and the bottom end of the supporting rod is slidably installed in the guide groove so that when the lifting rod swings, the bearing disc assembly can drive the hydraulic oil cylinder to rotate. The bearing disc assembly can ascend and descend in the second direction. One end of the locking piece is connected with the lifting rod, and the other end of the locking piece is connected with the frame body, so that the swinging height of the lifting rod is adjusted, and the lifting rod is locked. The device has the beneficial effects that the production shutdown time is shortened, and accidents caused by improper operation or unforeseen circumstances of workers are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a hydraulic oil cylinder replacement device. Background Art

[0002] During the equipment inspection and maintenance process, some heavy and remote cylinder equipment are often replaced, and several people and overhead cranes are required to cooperate. For example, the balance cylinder of the punching machine has no wrench position and the fixed thread thread is fine. If it is lifted up too tight, too fed or skewed, the thread cannot be screwed. It takes many attempts to correctly replace the equipment, which consumes a lot of time and manpower. In addition, the personnel need to have a certain tacit understanding. Otherwise, when the cylinder is rotated, the stand cylinder will be offset or tilted due to the friction of the bottom surface. The space for personnel to stand and the surrounding environment of the equipment make it difficult to use general tools, making installation difficult and prone to safety accidents. Therefore, there is an urgent need for a tool that can achieve the replacement of the cylinder with a small number of maintenance personnel, greatly improving work efficiency, and ensuring the safety of maintenance personnel. Utility Model Content

[0003] The utility model aims to provide a hydraulic cylinder replacement device to solve the problems of consuming manpower, being difficult to operate, and being prone to causing safety accidents in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic cylinder replacement device, comprising:

[0006] A frame body, the frame body having a mounting portion for detachably fixing to the puncher, the frame body having a support arm extending along a first direction, and the support arm having a limiting sleeve extending along a second direction;

[0007] A lifting rod, wherein the lifting rod is connected to the frame body through a fulcrum, the axis of the fulcrum is distributed along a third direction so that the lifting rod can swing around the fulcrum, and a guide groove distributed along the length direction of the lifting rod is provided at the first end of the lifting rod; the first direction, the second direction and the third direction are perpendicular to each other;

[0008] A support rod, the support rod extends along the second direction, the support rod passes through the limiting sleeve and can slide relative to the limiting sleeve along the second direction, a load-bearing plate assembly is installed at the top of the support rod, the load-bearing plate assembly is used to hold the hydraulic cylinder and can drive the hydraulic cylinder to rotate, and the bottom end of the support rod is slidably installed in the guide groove through a rolling bearing, so that when the lifting rod is swung, the load-bearing plate assembly can be lifted and lowered along the second direction;

[0009] Locking member, one end of the locking member is connected to the lifting rod, and the other end of the locking member is connected to the frame body to adjust the swinging height of the lifting rod and lock the lifting rod. With this setting, operating the locking member can adjust the swinging angle of the lifting rod, thereby adjusting the height of the support rod in the second direction, making the load-bearing disc assembly carry the hydraulic cylinder gradually approach or move away from the perforator. Manually operate to rotate the load-bearing disc assembly to drive the hydraulic cylinder to rotate, so as to tighten or loosen the installation bolts of the hydraulic cylinder. After multiple operations, the hydraulic cylinder can be successfully replaced. Moreover, the locking member can also lock the lifting rod to ensure that no safety accidents will occur due to sudden release of the hand by personnel. Through this device, the work efficiency is effectively improved, the production downtime is reduced, the safety risk at the work site is also reduced, and the accidents caused by improper operation or unexpected situations of workers are reduced.

[0010] Further, the load-bearing disc assembly includes a load-bearing disc, a receiving plate and a support spring. The load-bearing disc has a receiving cavity for carrying the hydraulic cylinder, and the load-bearing disc is rotatably installed at the top end of the support rod. The support springs are evenly installed in the receiving cavity of the load-bearing disc, and the axes of the support springs are distributed along the second direction. The receiving plate is installed at the top end of the support spring. With this setting, after the hydraulic cylinder is disassembled and falls into the load-bearing disc, it can slowly separate from the perforator main body, avoiding a large instantaneous impact. During installation, the buffering of the support spring eliminates the gap between the installation bolts of the hydraulic cylinder and the perforator body, facilitating the connection of the threads, and also avoiding the phenomenon that the second-direction force is too large to squeeze the threads and cause the cylinder to be stuck and difficult to screw. Moreover, during rotation, the friction at the bottom is eliminated to prevent the cylinder from sliding and misaligning and being difficult to install.

[0011] Further, it further includes a rotary support assembly. The rotary support assembly includes a support shaft, a bearing and a gland. The load-bearing disc is fixed to the first end of the support shaft. The second end of the support shaft is connected to the bearing. The gland is sleeved on the outer periphery of the bearing and the second end of the support shaft, and the bearing contacts the inner wall of the gland. The gland is fixed to the top end of the support rod. With this setting, the load-bearing disc assembly slides along the second direction following the support rod. While realizing height adjustment, it can also rotate relative to the support rod to gradually tighten or loosen the installation bolts of the hydraulic cylinder.

[0012] Further, the bearing is a tapered roller bearing.

[0013] Further, it further includes positioning pins. The positioning pins are evenly distributed on the side wall of the receiving cavity of the load-bearing disc and contact the receiving plate to keep the support springs in a pre-compressed state.

[0014] Further, the positioning pins are elastic cylindrical pins. The elastic cylindrical pins have high stability and are not easy to fall off.

[0015] Furthermore, the support arm includes an outer sleeve, an extension rod, and a fixing member; the outer sleeve and the extension rod are both distributed along a first direction, the limiting sleeve is installed at the first end of the extension rod, the second end of the extension rod is telescopically installed inside the first end of the outer sleeve, the second end of the outer sleeve is connected to the frame body, and the fixing member passes through the outer sleeve and contacts the extension rod to relatively fix the extension rod and the outer sleeve. With this arrangement, the support arm can be telescoped along the first direction, facilitating the adjustment of the position of the load-bearing plate assembly along the first direction.

[0016] Furthermore, the locking member is a chain hoist, the first hook of the chain hoist is connected to the lifting rod, and the second hook of the chain hoist is connected to the frame body so that swinging the lifting rod by pulling the chain of the chain hoist.

[0017] Furthermore, a handle is installed at the second end of the lifting rod. By providing the handle, it is convenient to swing the lifting rod, and the first hook of the chain hoist can also be connected to the handle.

[0018] Furthermore, the frame body includes a first cross beam, a second cross beam, and a frame. The first cross beam and the second cross beam both extend along the first direction. The first cross beam is installed on one side of the frame close to the support rod, and the second cross beam is installed on the side of the frame away from the support rod. The lifting rod is swingably connected to the first cross beam through a fulcrum, and the second end of the lifting rod is located above the second cross beam. The second hook of the chain hoist is connected to the second cross beam, and the support arm is connected to the frame. With this arrangement, while simplifying the structure of the frame body, it is convenient to install the lifting rod and the chain hoist.

[0019] Furthermore, the installation part includes two support legs, and the two support legs are symmetrically installed at the bottom of the frame. There is a gap between the two support legs to snap the raised platform of the perforating machine into the gap, so that the frame is detachably fixed to the perforating machine.

[0020] Furthermore, each support leg includes two cross bars, the cross bars are arranged vertically up and down, and bolt holes are formed in the cross bars to connect the frame to the perforating machine body through bolts.

[0021] The utility model has the following advantages over the prior art:

[0022] 1. The hydraulic cylinder replacement device in the present utility model is provided with a lifting rod that can swing along a fulcrum and a support rod that can slide along a second direction. A rotatable load-bearing disc assembly is installed at the top of the support rod. During use, the height of the support rod along the second direction is adjusted by swinging the lifting rod, so that the hydraulic cylinder falls into the load-bearing disc assembly. By rotating the load-bearing disc assembly, the hydraulic cylinder can be rotated. Repeatedly performing the operations of adjusting the height of the support rod and rotating the load-bearing disc assembly can remove the hydraulic cylinder. When installing the hydraulic cylinder, the above steps (rotating the load-bearing disc assembly in the reverse direction) are also carried out, and the hydraulic cylinder can be successfully installed. By adopting this device, the disassembly and assembly of the hydraulic cylinder are more convenient, greatly improving the maintenance efficiency and reducing the maintenance time. One or two staff members can cooperate to use this device to complete the replacement of the hydraulic cylinder, reducing the labor input. By setting a locking member, it is convenient to adjust the swinging height of the lifting rod and can lock the lifting rod, preventing safety accidents caused by sudden release of the hand by personnel.

[0023] 2. The hydraulic cylinder replacement device of the present utility model is mainly aimed at the hydraulic cylinder arranged along the second direction. The height of the support rod along the second direction is adjustable. A load-bearing disc assembly is installed at its top. A receiving plate supported by a support spring (in a pre-compressed state) is arranged inside the load-bearing disc assembly, so that when the hydraulic cylinder is disassembled, it can slowly separate from the main body of the perforating machine, avoiding a large instantaneous impact; during installation, the buffering effect of the support spring can eliminate the gap between the installation bolts of the hydraulic cylinder and the perforating machine body, facilitating their threaded connection, and also avoiding the phenomenon that the hydraulic cylinder is stuck and difficult to screw due to excessive force applied along the second direction, and eliminating the friction at the bottom during rotation to cause the hydraulic cylinder to slide and be misaligned and difficult to install. The bottom of the load-bearing disc is connected to a tapered roller bearing through a support shaft. The outer side of the tapered roller bearing contacts the gland. The gland is fixed to the support rod by bolts. Through this setting, the load-bearing disc can rotate relative to the support rod, thereby driving the hydraulic cylinder to rotate for the disassembly or installation of the hydraulic cylinder.

[0024] 3. The hydraulic cylinder replacement device of the present utility model has two support legs arranged at the bottom of the frame. The interval between the two support legs just fits into the raised platform of the perforating machine. Moreover, a cross bar with bolt holes is arranged on the support legs, thereby fixing the frame to the perforating machine, ensuring the stability of the frame during the replacement of the hydraulic cylinder and ensuring the safety of personnel. Brief Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the hydraulic cylinder replacement device in the embodiment of the present utility model;

[0026] Figure 2 is a schematic structural diagram of the load-bearing disc assembly in the hydraulic cylinder replacement device in the embodiment of the present utility model;

[0027] In the figure: 1. Frame; 101. Installation part; 1011. Support leg; 1012. Cross bar; 102. Support arm; 103. Limit sleeve; 104. Outer sleeve; 105. Extension rod; 106. Fixing part; 107. First cross beam; 108. Second cross beam; 109. Frame; 2. Lifting rod; 201. Fulcrum; 202. Guide groove; 203. Handle; 3. Load-bearing disc assembly; 301. Load-bearing disc; 302. Bearing plate; 303. Support spring; 304. Support shaft; 305. Bearing; 306. gland; 307. Positioning pin; 4. Locking part; 5. Support rod; 501. Rolling bearing. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the accompanying drawings are not drawn in actual proportional relationships.

[0031] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of the subsequent drawings.

[0032] Embodiment:

[0033] As Figures 1 to 2 shown, the present invention provides a hydraulic cylinder replacement device, including:

[0034] A frame 1, the frame 1 has an installation part 101 for detachably fixing to a perforating machine, the frame 1 has a support arm 102 extending in a first direction, and the support arm 102 has a limit sleeve 103 extending in a second direction;

[0035] In this embodiment, the frame structure is simple, which is convenient to be fixed on the piercing machine and easy to move, effectively improving the work efficiency. As Figure 1 shown, the frame 1 includes a first cross beam 107, a second cross beam 108 and a frame 109. In this embodiment, the frame 109 is rectangular. In practical applications, the frame can also be of other structures, as long as it enables the frame to meet a certain support strength and does not affect the swing range of the lifting rod. Among them, both the first cross beam 107 and the second cross beam 108 extend along the first direction. The first cross beam 107 and the second cross beam 108 are respectively located on both sides of the frame 109. Specifically, the first cross beam 107 is installed on the side of the frame 109 close to the support rod 5, and the second cross beam 108 is installed on the side of the frame 109 far from the support rod 5. The support arm 102 is connected to the frame and is located above the first cross beam.

[0036] In this embodiment, the installation part 101 of the frame 1 includes two support legs 1011. The two support legs 1011 are symmetrically installed at the bottom of the frame 109. There is a gap between the two support legs 1011 to snap the raised platform of the piercing machine into the gap, so that the frame 109 can be detachably fixed to the piercing machine. Among them, two horizontal bars 1012 arranged vertically up and down are provided at the bottom end of each support leg 1011. Bolt holes are provided on the horizontal bars 1012, and bolts are used to pass through the bolt holes to connect the frame to the piercing machine body. When disassembling, just unscrew the bolts. Through this setting, it is convenient to fix this hydraulic cylinder replacement device on the piercing machine body or separate the hydraulic cylinder from the piercing machine body after the hydraulic cylinder replacement is completed, with convenient operation and improved work efficiency.

[0037] The hydraulic cylinder replacement device in this embodiment has a lifting rod 2. The lifting rod 2 is connected to the frame 1 through a fulcrum 201. The axis of the fulcrum 201 is distributed along the third direction, so that the lifting rod 2 can swing around the fulcrum 201. A guide groove distributed along the length direction of the lifting rod 2 is provided at the first end of the lifting rod 2; a slidable rolling bearing 501 is provided in the guide groove. The first direction, the second direction and the third direction are perpendicular to each other; the fulcrum can be a rotating shaft, and the lifting rod 2 is connected to the first cross beam 107 of the frame 1 through the rotating shaft, so that the lifting rod 2 can swing relative to the frame 1. During specific implementation, adjusting the width and thickness of the lifting rod 2 according to the actual use situation can effectively reduce the deformation of the lifting rod.

[0038] This embodiment is also provided with a support rod 5, which extends along the second direction. The support rod 5 passes through the limit sleeve 103 of the frame 1 and can slide relative to the limit sleeve 103 along the second direction. A load-bearing plate assembly 3 is installed at the top end of the support rod 5, and the load-bearing plate assembly 3 is used to carry the hydraulic cylinder. The load-bearing plate assembly 3 can be selected relative to the support rod 5, that is, it can drive the hydraulic cylinder to rotate. The bottom end of the support rod is slidably installed in the guide groove of the lifting rod 2, so that when the swinging lifting rod 2 is swung, the bottom end of the support rod 5 is connected with a rolling bearing 501 so that it can slide along the guide groove 202, realizing the lifting and lowering of the support rod 5 along the second direction. The load-bearing plate assembly 3 should ensure that it can rotate together with the hydraulic cylinder and has a certain elasticity in the case of large loads, so as to reduce buffering and ensure that the rotation is not affected due to the excessive weight of the oil cylinder. At the same time, it can also ensure that the support rod after installing the load-bearing plate assembly can perform reciprocating motion to slowly lift or lower the oil cylinder.

[0039] Preferably, the lifting rod 2 is connected to one end of the first cross beam 107 of the frame close to the support rod 5 through a fulcrum 201, so that the lifting rod 2 can swing around the fulcrum 201, and the second end of the lifting rod 2 is located above the second cross beam 108. Through this setting, the structure of the frame can be simplified, and the positions of the first cross beam and the second cross beam do not affect the swinging of the lifting rod. A locking member can also be installed at one end of the lifting rod close to the second cross beam. While adjusting the swinging height of the lifting rod, the height of the lifting rod can also be locked.

[0040] Specifically, the locking member 4 can be selected as a chain block. The first hook of the chain block is connected to the lifting rod 2, and the second hook of the chain block is connected to the second cross beam 108. During use, pulling the chain of the chain block can adjust the swinging degree of the lifting rod 2, thereby adjusting the height of the support rod 5 along the second direction, making the load-bearing plate assembly 3 carrying the hydraulic cylinder approach or move away from the perforating machine. At the same time, the load-bearing plate assembly 3 can rotate relative to the support rod to drive the hydraulic cylinder to rotate, so as to tighten or loosen the installation bolts of the hydraulic cylinder, and complete the disassembly or installation of the hydraulic cylinder.

[0041] In another embodiment, a handle 203 is installed at the second end of the lifting rod 2. By setting the handle 203, it is convenient to operate the swinging of the lifting rod, and the first hook of the chain block can also be connected to the handle 203.

[0042] Preferably, in this embodiment, the first direction is the X direction in the rectangular coordinate system, the second direction is the Z direction in the rectangular coordinate system, and the third direction is the Y direction in the rectangular coordinate system. The hydraulic cylinder is threadedly installed on the perforating machine along the Z direction. Through this device, the replacement of the hydraulic cylinder can be completed simply and quickly.

[0043] With this hydraulic cylinder replacement device, pulling the chain of the manual hoist can adjust the swing angle of the lifting rod 2, thereby adjusting the height of the support rod 5 in the second direction, making the load-bearing plate assembly 3 carry the hydraulic cylinder and gradually approach or move away from the perforator. Manually operate to rotate the load-bearing plate assembly 3 to drive the hydraulic cylinder to rotate, thereby tightening or loosening the installation bolts of the hydraulic cylinder. After multiple operations, the hydraulic cylinder can be successfully replaced. Moreover, the locking member 4 can also lock the lifting rod 2 to ensure that no safety accidents will occur due to sudden release of the hand by personnel. Through this device, the work efficiency is effectively improved, the production shutdown time is reduced, the safety risk at the work site is also reduced, and the accidents caused by improper operation or unexpected situations of workers are reduced.

[0044] In this embodiment, as Figure 2 shown, the load-bearing plate assembly 3 includes a load-bearing plate 301, a receiving plate 302, and a support spring 303. The load-bearing plate 301 has a receiving cavity for carrying the hydraulic cylinder, and the load-bearing plate 301 is rotatably installed at the top end of the support rod 5. The support spring 303 is evenly installed in the receiving cavity of the load-bearing plate 301, and the axis of the support spring 303 is distributed in the second direction. The receiving plate 302 is installed at the top end of the support spring 303. By arranging the support spring 303 and the receiving plate 302 in the load-bearing plate 301, when the hydraulic cylinder falls into the load-bearing plate 301 after being disassembled, it can slowly separate from the perforator body, avoiding a large instantaneous impact; during installation, the buffering effect of the support spring 303 can eliminate the gap between the installation bolts of the hydraulic cylinder and the perforator body, facilitating the threaded connection between the two, and also avoiding the phenomenon that the hydraulic cylinder is stuck and difficult to turn due to excessive force applied in the second direction, and eliminating the bottom friction during rotation to cause the hydraulic cylinder to slide and misalign and be difficult to install.

[0045] Preferably, positioning pins 307 are evenly distributed on the side wall of the receiving cavity of the load-bearing plate 301, and the bottom of the positioning pins 307 contacts the receiving plate 302. The positioning pins 307 can limit the receiving plate within the load-bearing plate, limit the height of the receiving plate 302 in the second direction, so that it presses the support spring, ensuring that when the hydraulic cylinder falls, the support spring is in a compressed state and can play a buffering role. At the same time, the cooperation between the positioning pins 307 and the support spring can also ensure the stability of the receiving plate. Specifically, the positioning pins are elastic cylindrical pins. The elastic cylindrical pins have high stability and are not easy to fall off.

[0046] In this embodiment, a rotating support assembly is further included. The rotating support assembly includes a support shaft 304, a bearing 305, and a gland 306. The load-bearing disk 301 is fixed to the first end of the support shaft 304 by screws. The second end of the support shaft 304 is connected to the bearing 305. The gland 306 is sleeved on the outer periphery of the bearing 305 and the second end of the support shaft 304, and the bearing 305 contacts the inner wall of the gland 306. The gland 306 is fixed to the top end of the support rod 5 by bolts. Through this setting, the load-bearing disk assembly 3 can rotate relative to the support rod 5 to realize the tightening or loosening of the installation bolts of the hydraulic cylinder. Specifically, the bearing 305 is a tapered roller bearing.

[0047] In this embodiment, the arm 102 is telescopically arranged. Specifically, the arm 102 includes an outer sleeve 104, an extension rod 105, and a fixing member 106. The outer sleeve 104 and the extension rod 105 are both distributed along the first direction. The limit sleeve 103 is installed at the first end of the extension rod 105. The second end of the extension rod 105 is telescopically installed inside the first end of the outer sleeve 104. The second end of the outer sleeve 104 is connected to the frame 1. The fixing member 106 passes through the outer sleeve 104 and contacts the extension rod 105 to relatively fix the extension rod 105 and the outer sleeve 104. The fixing member can be a bolt. The bolt is screwed into the outer sleeve and abuts against the extension rod to fix the extension rod and prevent it from sliding along the first direction. Through this setting, the arm 10 can be telescoped along the first direction, facilitating the adjustment of the position of the load-bearing disk assembly 3 along the first direction. That is, after the frame is fixed to the piercing mill, by adjusting the length of the extension rod 105 extending out of the outer sleeve 104, the load-bearing disk assembly can be aligned with the hydraulic cylinder without moving the position of the frame.

[0048] During specific use: Transport the device to the designated position, fix the support legs 1011 at the bottom of the frame 1 to the piercing mill body through anchor bolts to ensure that the frame 1 does not shake. Then adjust the extending length of the extension rod 105 to align the load-bearing disk assembly 3 with the hydraulic cylinder (the hydraulic cylinder is arranged along the second direction). Process of removing the cylinder: Pull the chain hoist until the load-bearing disk assembly fits against the bottom surface of the cylinder, and feel the resistance when pulling the chain hoist at the same time. At this time, rotate the cylinder, and the load-bearing disk assembly will rotate together with the hydraulic cylinder. When it is difficult to rotate the cylinder, slowly pull the chain hoist in the reverse direction, then continue to rotate the cylinder, and repeat this process, and the cylinder will be removed. Process of assembling the cylinder: Place the cylinder on the load-bearing disk assembly, pull the chain hoist until the installation bolts of the cylinder fit against the installation position of the piercing mill, and feel the resistance when pulling the chain hoist at the same time. Then rotate the cylinder, and the installation of the cylinder is completed.

[0049] This hydraulic cylinder replacement device combines a crank-slider mechanism and a lever mechanism. While realizing the reciprocating motion of the support rod 5, it can also reduce the force required by the maintenance personnel at the end. When the lifting rod 2 is pressed down, the manual chain hoist can be controlled to tighten at the same time, ensuring that no safety accidents will occur due to sudden release of the hand by the personnel. For the hydraulic cylinder arranged along the second direction, a load-bearing disc assembly 3 is installed on the support rod 5, so that the hydraulic cylinder can be slowly separated from the main body during the disassembly process, avoiding a large instantaneous impact. During installation, the buffer of the inner support spring 303 in the load-bearing disc assembly eliminates the gap between the hydraulic cylinder installation bolt and the main body, facilitating the connection of the threads, and also avoiding the phenomenon that the hydraulic cylinder is stuck and difficult to screw due to excessive force applied along the second direction. Moreover, during rotation, the friction at the bottom is eliminated to prevent the hydraulic cylinder from sliding out of position and being difficult to install. Among them, the support rod 5 and the lifting rod 2 are the main load-bearing components, and carbon structural steel Q235 is selected; the load-bearing disc assembly and the manual chain hoist are combined components; the support arm 102 and the frame body 1 are both made of square tubes. The utility model solves the problem of difficult disassembly and assembly of hydraulic cylinders in some remote locations. The overall structure is simple, the operation is convenient, no complex special skills are required, only concise operation steps are needed, which improves the work efficiency, reduces the production downtime, and also reduces the safety risks at the work site, and reduces the accidents caused by improper operation or unexpected situations of workers.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder replacement device, characterized in that, including: a frame body, which has a mounting portion for detachably fixing to a perforator, the frame body has a support arm extending in a first direction, and the support arm has a limiting sleeve extending in a second direction; a lifting rod, which is connected to the frame body through a fulcrum, the axis of the fulcrum is distributed in a third direction, so that the lifting rod can swing around the fulcrum, and a guiding groove distributed along the length direction of the lifting rod is formed at the first end of the lifting rod; the first direction, the second direction and the third direction are perpendicular to each other; a support rod, which extends in the second direction, the support rod passes through the limiting sleeve and can slide relative to the limiting sleeve in the second direction, a load-bearing disc assembly is installed at the top end of the support rod, the load-bearing disc assembly is used for holding a hydraulic cylinder and can drive the hydraulic cylinder to rotate, and the bottom end of the support rod is slidably installed in the guiding groove, so that when the lifting rod swings, the load-bearing disc assembly can lift in the second direction; a locking member, one end of the locking member is connected to the lifting rod, and the other end of the locking member is connected to the frame body to adjust the swinging height of the lifting rod and lock the lifting rod.

2. The hydraulic cylinder replacement device according to claim 1, wherein: The load-bearing disc assembly includes a load-bearing disc, a receiving plate and a support spring. The load-bearing disc has a receiving cavity for bearing the hydraulic cylinder, and the load-bearing disc is rotatably installed at the top end of the support rod. The support springs are evenly installed in the receiving cavity of the load-bearing disc, and the axis of the support spring is distributed in the second direction. The receiving plate is installed at the top end of the support spring.

3. The hydraulic cylinder replacement device according to claim 2, characterized in that: It further includes a rotating support assembly, which includes a support shaft, a bearing and a gland. The load-bearing disc is fixed to the first end of the support shaft, the second end of the support shaft is connected to the bearing, the gland is sleeved on the outer periphery of the bearing and the second end of the support shaft, and the bearing is in contact with the inner wall of the gland. The gland is fixed to the top end of the support rod.

4. The hydraulic cylinder replacement device according to claim 2, characterized in that: It further includes positioning pins, which are evenly distributed on the side wall of the receiving cavity of the load-bearing disc and are in contact with the receiving plate, so that the support springs are in a pre-compressed state.

5. The hydraulic cylinder replacement device according to claim 1, characterized in that: The support arm includes an outer sleeve, an extension rod and a fixing member; both the outer sleeve and the extension rod are distributed in the first direction, the limiting sleeve is installed at the first end of the extension rod, the second end of the extension rod is telescopically installed inside the first end of the outer sleeve, the second end of the outer sleeve is connected to the frame body, and the fixing member passes through the outer sleeve and contacts the extension rod to relatively fix the extension rod and the outer sleeve.

6. The hydraulic cylinder replacement device according to claim 1, characterized in that: The locking member is a chain block. The first hook of the chain block is connected to the lifting rod, and the second hook of the chain block is connected to the frame body, so that pulling the chain of the chain block makes the lifting rod swing.

7. The hydraulic cylinder replacement device according to claim 6, characterized in that: A handle is installed at the second end of the lifting rod.

8. The hydraulic cylinder replacement device according to claim 6, characterized in that: The frame body includes a first cross beam, a second cross beam and a frame. Both the first cross beam and the second cross beam extend in the first direction. The first cross beam is installed on one side of the frame close to the support rod, and the second cross beam is installed on the side of the frame far from the support rod. The lifting rod is swingably connected to the first cross beam through a fulcrum, and the second end of the lifting rod is located above the second cross beam. The second hook of the chain block is connected to the second cross beam, and the support arm is connected to the frame.

9. The hydraulic cylinder replacement device according to claim 8, characterized in that: The installation part includes two support legs, the two support legs are symmetrically installed at the bottom of the frame, and there is a gap between the two support legs to snap the raised platform of the punching machine into the gap, so that the frame is detachably fixed to the punching machine.

10. The hydraulic cylinder replacement device according to claim 9, characterized in that: The support leg includes two cross bars, the cross bars are arranged vertically up and down, and bolt holes are provided on the cross bars to connect the frame and the punching machine body through bolts.

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