Cylinder body moving device of hydraulic test pump and pump maintenance equipment with cylinder body moving device

Abstract

The invention belongs to the technical field of pump maintenance, and particularly relates to a cylinder body moving device of a hydrostatic test pump and pump maintenance equipment with the cylinder body moving device. The cylinder body moving device comprises a support, a clamping mechanism and a driving mechanism, and the clamping mechanism comprises a first clamping jaw, a second clamping jaw and a first driving assembly; a clamping space used for containing a cylinder body of the hydraulic test pump in a matched mode is formed between the first clamping jaw and the second clamping jaw, at least one of the first clamping jaw and the second clamping jaw is connected with the driving end of the first driving assembly, and the first driving assembly is used for driving the first clamping jaw and the second clamping jaw to get close to each other or get away from each other so as to clamp or loosen the cylinder body. The driving mechanism is used for driving and adjusting the position of the clamping mechanism. By means of the device, automatic separation and insertion connection of the cylinder body and the cylinder body support can be achieved, auxiliary equipment such as a scaffold and a lifting device does not need to be used in the cylinder body disassembly and assembly process, cylinder body disassembly and assembly and maintenance operation is simplified, operation difficulty and operation risks are reduced, and cylinder body maintenance efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of pump maintenance technology, and more specifically, it relates to a cylinder moving device for a water pressure test pump and pump maintenance equipment having the same. Background Technology

[0002] A hydraulic pressure testing pump is a specialized pump used to test the sealing performance and pressure resistance of pressure-bearing equipment such as pipelines, containers, and valves by pressurizing media such as water. It is primarily used to simulate potential leaks, structural deformations, and other hazards in equipment under actual working pressure or overpressure conditions. It is widely used in nuclear power, chemical, petroleum, and construction industries. A hydraulic pressure testing pump typically has two plunger cylinders, which are mounted on a cylinder support via a stop. The cylinder, along with the plunger installed inside, weighs up to 150 kg. When disassembling and repairing the cylinder and plunger, the cylinder must be removed from the cylinder support before the plunger located inside can be inspected.

[0003] In related technologies, scaffolding is often used in conjunction with a crane hoist to disassemble the cylinder body. During the disassembly process, the cylinder body is first lifted by the crane hoist to remove it from its installation position, and then dragged multiple times to transfer it to the maintenance platform. Due to the large weight of the cylinder body, it is prone to swaying during disassembly and transportation using a crane hoist, making its movement trajectory difficult to control, resulting in poor stability and a high risk of collision. Furthermore, the cylinder body is suspended at a height during transportation, and if the crane hoist or scaffolding becomes unstable, it may fall, posing a certain safety hazard. More importantly, after disassembly, the crane hoist cannot rotate the cylinder body, requiring additional equipment or multiple people to rotate it before the inner plunger can be inspected. This operation is difficult, time-consuming, and labor-intensive, making it difficult to improve maintenance efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a cylinder moving device for a water pressure test pump and a pump maintenance device having the same, aiming to solve the problems of high difficulty and low efficiency in disassembling the cylinder and maintaining the inner plunger of the cylinder in the related art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A cylinder moving device for a hydraulic pressure testing pump is provided, comprising: support; A clamping mechanism is mounted on a bracket. The clamping mechanism includes a jaw mounting base, a first jaw, a second jaw, and a first drive assembly. The first jaw and the second jaw are spaced apart along a first direction and slidably mounted on the jaw mounting base. A clamping space is formed between the first jaw and the second jaw for adapting to accommodate the cylinder of a water pressure test pump. At least one of the first jaw and the second jaw is connected to the drive end of the first drive assembly. The first drive assembly is used to drive the first jaw and the second jaw to move closer or further apart to clamp or release the cylinder. The drive mechanism includes a first mounting base, a second mounting base, a second drive assembly, and a third drive assembly; The first mounting base is mounted on the drive end of the second drive assembly. The second drive assembly is mounted on the bracket and is used to drive the first mounting base to reciprocate linearly along the second direction. The second mounting base is mounted on the first mounting base. The third drive assembly is mounted on the second mounting base. The gripper mounting base is connected to the drive end of the third drive assembly. The third drive assembly is used to drive the gripper mounting base to rotate about a third direction line as an axis. The first direction, the second direction and the third direction are perpendicular to each other.

[0006] In some embodiments, the first gripper has a first clamping surface facing the second gripper, the second gripper has a second clamping surface facing the first gripper, the clamping space is located between the first clamping surface and the second clamping surface, and both the first clamping surface and the second clamping surface are concave arc surfaces adapted to the shape of the cylinder body.

[0007] In some embodiments, the first clamping surface and the second clamping surface are elastic surfaces.

[0008] In some embodiments, the first gripper includes a first body member and a first elastic member, the first elastic member being detachably connected to the surface of the first body member facing the second gripper. The second gripper includes a second main body and a second elastic member, the second elastic member being detachably connected to the surface of the second main body facing the first gripper; The elastic surface is provided on the first elastic element and the second elastic element.

[0009] In some embodiments, the clamping mechanism further includes an auxiliary limiting component, which includes a limiting plate and at least one positioning clamp that can be adapted to be fitted to the cylinder body. The end of the positioning clamp is detachably connected to the limiting plate, and the auxiliary limiting component is detachably connected to the first gripper. When the auxiliary limiting component is installed on the first gripper, the surface of the limiting plate facing the positioning clamp is in contact with the surface of the first gripper facing away from the second gripper. The positioning clamp can be adapted to extend into the clamping space and cooperate with the first gripper and the limiting plate to clamp the cylinder.

[0010] In some embodiments, the auxiliary limiting component includes two positioning clamps, which are located on opposite sides of the first gripper along the second direction when the auxiliary limiting component is installed on the first gripper.

[0011] In some embodiments, the drive mechanism further includes a fourth drive component, which is mounted on the second mounting base. The gripper mounting base is connected to the drive end of the fourth drive component, and the fourth drive component is used to drive the gripper mounting base to perform reciprocating linear motion along a first direction.

[0012] In some embodiments, the bracket is further provided with an auxiliary fixing member located on the side of the bracket, which is used for detachable connection with the support structure for mounting the water pressure test pump.

[0013] In some embodiments, the cylinder moving device further includes a mobile trolley, on which a bracket is mounted.

[0014] Another aspect of this application provides a pump maintenance device, including the cylinder moving device of the aforementioned water pressure test pump.

[0015] The beneficial effects of the cylinder moving device for the hydraulic test pump provided in this application are as follows: During use, the bracket is moved close to the cylinder to be disassembled. The distance between the first and second grippers is adjusted by the first drive assembly to increase the clamping space. Then, the relative position between the clamping space and the cylinder is adjusted by moving the bracket and activating the second drive assembly, so that the clamping space is located on the side of the cylinder along the second direction and the axis of the cylinder coincides with the center line of the clamping space. The second drive assembly drives the first and second grippers to move towards the cylinder until a portion of the cylinder is engaged and inserted into the clamping space. The first drive assembly drives the first and second grippers to approach and clamp the cylinder. The operator then disassembles the connection between the cylinder and its support. Finally, the second drive assembly drives the clamping mechanism to hold the cylinder and pull it off the support in a second direction, separating the cylinder from its support. Next, the third drive assembly drives the first and second grippers to rotate the cylinder, flipping it over for inspection of the internal plunger. After inspection, the process is reversed to reattach the cylinder to the support. This cylinder moving device automatically separates and connects the cylinder to its support. The disassembly and assembly process eliminates the need for scaffolding and lifting equipment, simplifying the disassembly, assembly, and maintenance procedures, reducing operational difficulty and risk, and improving maintenance efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the cylinder moving device provided in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the clamping mechanism of the cylinder moving device shown in the diagram when clamping the cylinder; Figure 3 for Figure 1 A schematic diagram of the clamping mechanism of the cylinder moving device shown; Figure 4 for Figure 3 The diagram shows the structure of the clamping mechanism when clamping the cylinder. Figure 5 for Figure 1 The diagram shows the assembly structure of the cylinder moving device bracket and the second drive assembly when mounted on a mobile trolley. Figure 6 For use Figure 1 The diagram shows the structure of the cylinder moving device during cylinder assembly and disassembly.

[0018] The following are the labeling elements in the figure: 100. Cylinder moving device; 10. Bracket; 20. Clamping mechanism; 21. Gripper mounting base; 22. First gripper; 221. First clamping surface; 222. First main body component; 223. First elastic element; 23. Second gripper; 231. Second clamping surface; 232. Second main body component; 233. Second elastic element; 24. First drive assembly; 241. Bidirectional lead screw; 25. Clamping space; 30. Drive mechanism; 31. First mounting base; 32. Second mounting base; 33. Second drive assembly; 34. Third drive assembly; 35. Fourth drive assembly; 40. Auxiliary limiting assembly; 41. Limiting plate; 42. Positioning clamp; 50. Auxiliary fixing component; 60. Mobile trolley; 200. Cylinder block; 300. Cylinder block bracket; 400. Supporting structure. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution and the beneficial effects of this application clearer, the following is in conjunction with the appendix. Figures 1 to 6 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, "multiple sets" means two or more sets, "multiple pieces" means two or more pieces, and "several" means one or more, unless otherwise explicitly specified.

[0023] A hydraulic pressure testing pump is a specialized pump used to test the sealing performance and pressure resistance of pressure-bearing equipment such as pipelines, containers, and valves by pressurizing media such as water. It is primarily used to simulate potential leaks, structural deformations, and other hazards in equipment under actual working pressure or overpressure conditions. It is widely used in nuclear power, chemical, petroleum, and construction industries. The core transmission component of the hydraulic pressure testing pump consists of two plunger cylinders, which are mounted on a cylinder support via a stop joint to ensure the structural stability and transmission accuracy of the pump during operation. The total weight of a single plunger cylinder, including the plungers mounted inside, reaches 150 kg.

[0024] In the maintenance and repair of hydraulic test pumps, when it is necessary to disassemble and repair the plunger, the cylinder body must first be removed from the cylinder body support. In related technologies, scaffolding is often used in conjunction with a crane hoist to disassemble the cylinder body. During the operation, a temporary support platform is first erected using scaffolding. The cylinder body is then connected using the hook of the crane hoist, and subsequently detached from the cylinder body support (for example, by removing the connecting fasteners). The crane hoist is then used to lift the cylinder body, detaching it from the stop position on the cylinder body support. Then, the suspension position and traction direction of the crane hoist are adjusted several times, and the cylinder body is gradually dragged to a designated repair platform for subsequent repair work. However, the above-mentioned maintenance method has the following drawbacks: On the one hand, the hoist suspension relies on temporary scaffolding, which has poor support stability. During the movement of the cylinder, the cylinder is prone to swaying and deviating due to uneven force, making it difficult to accurately control the transfer trajectory. This not only leads to a long maintenance preparation time and low efficiency, but also increases the risk of collision damage between the cylinder and surrounding equipment. On the other hand, if the hoist hook or rope fails due to fatigue or the scaffolding support fails during the high-altitude suspension and transfer of the 150kg heavy cylinder, it is very easy for the cylinder to fall, posing a serious threat to the personal safety of on-site operators and posing a significant safety hazard. More importantly, the above-mentioned maintenance methods can only disassemble and transport the cylinder block, but cannot achieve the cylinder block flipping operation. When it is necessary to flip the cylinder block to fully inspect the plungers inside the cylinder block during maintenance, additional equipment or multiple people are required to flip the cylinder block in order to inspect the plungers inside. This further increases the complexity and difficulty of the maintenance process, making maintenance time-consuming, labor-intensive, and inefficient.

[0025] Based on this, embodiments of this application provide a cylinder moving device for a water pressure test pump and a pump maintenance device having the same, to solve the above problems.

[0026] Please refer to the following: Figures 1 to 6 The cylinder moving device for a hydraulic pressure testing pump and the pump maintenance equipment using it provided in this application embodiment are applicable, but not limited to, for disassembling the pump cylinder and flipping the cylinder to inspect the plunger inside the cylinder during the maintenance of equipment in a nuclear power plant. The pump can be a pressure testing pump, such as a hydraulic pressure testing pump. In this application embodiment, the first direction is the direction shown by arrow F1 in the figure, the second direction is the direction shown by arrow F2 in the figure, and the third direction is the direction shown by arrow F3 in the figure. The axial direction of the cylinder and its insertion direction between the cylinders are in the same direction as the second direction.

[0027] In the embodiments of this application, such as Figures 1 to 4As shown, the cylinder moving device 100 of the water pressure test pump includes a bracket 10, a clamping mechanism 20, and a drive mechanism 30. The clamping mechanism 20 is mounted on the bracket 10 and includes a jaw mounting base 21, a first jaw 22, a second jaw 23, and a first drive assembly 24. The first jaw 22 and the second jaw 23 are spaced apart along a first direction and slidably mounted on the jaw mounting base 21. A clamping space 25 is formed between the first jaw 22 and the second jaw 23 to accommodate the cylinder 200 of the water pressure test pump. At least one of the first jaw 22 and the second jaw 23 is connected to the drive end of the first drive assembly 24. The first drive assembly 24 drives the first jaw 22 and the second jaw 23 to move closer or further apart to clamp or release the cylinder 200. 30 includes a first mounting base 31, a second mounting base 32, a second drive assembly 33, and a third drive assembly 34; wherein, the first mounting base 31 is mounted on the drive end of the second drive assembly 33, the second drive assembly 33 is mounted on the bracket 10 and is used to drive the first mounting base 31 to perform reciprocating linear motion along the second direction, the second mounting base 32 is mounted on the first mounting base 31, the third drive assembly 34 is mounted on the second mounting base 32, the gripper mounting base 21 is connected to the drive end of the third drive assembly 34, and the third drive assembly 34 is used to drive the gripper mounting base 21 to rotate about a third direction line as an axis, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0028] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the bracket 10 is used to provide support for the installation of the clamping mechanism 20. The clamping mechanism 20 includes a first clamp 22 and a second clamp 23 that are slidably disposed. The first clamp 22 and the second clamp 23 can clamp or release the cylinder 200 by adjusting the interval distance. The drive mechanism 30 is used to adjust the position of the clamping mechanism 20 so that the first clamp 22 and the second clamp 23 can fit the cylinder 200 into the clamping space 25 along the axial direction of the cylinder 200, providing a positional basis for the first clamp 22 and the second clamp 23 to approach and clamp the cylinder 200 radially from the cylinder 200.

[0029] Please combine them together Figures 1 to 3 ,as well as Figure 6In a specific embodiment, when using the cylinder moving device 100 of the hydraulic test pump, the bracket 10 is moved close to the cylinder 200 to be disassembled. The distance between the first gripper 22 and the second gripper 23 is adjusted by the first drive assembly 24 to increase the clamping space 25. Then, the relative position between the clamping space 25 and the cylinder 200 is adjusted by moving the bracket 10 and activating the second drive assembly 33, so that the clamping space 25 is located on the side of the cylinder 200 along the second direction and the axis of the cylinder 200 coincides with the center line of the clamping space 25. The first gripper 22 and the second gripper 23 are driven by the second drive assembly 33 to move toward the cylinder 200 until a portion of the cylinder 200 is engaged and inserted into the clamping space 25. The first drive assembly 24 drives the first gripper 22 and the second gripper 23 to approach each other and clamp the cylinder 200. Then, the operator disassembles the connection structure (such as the flange and related connecting parts) between the cylinder 200 and the cylinder support 300. Finally, the second drive assembly 33 drives the clamping mechanism 20 to clamp the cylinder 200 and pull the cylinder 200 off the cylinder support 300 in the second direction. At this time, the cylinder 200 can be separated from the cylinder support 300. After that, the third drive assembly 34 drives the first gripper 22 and the second gripper 23 to clamp the cylinder 200 and rotate it, so that the cylinder 200 deflects relative to the second direction, thereby flipping the cylinder 200 to inspect the plunger and other parts inside the cylinder 200.

[0030] After the maintenance is completed, the steps described above are reversed to reconnect the cylinder block 200 to the cylinder block bracket 300. Specifically, the third drive assembly 34 drives the first gripper 22 and the second gripper 23 to flip the cylinder block 200 until its axis is parallel to the second direction, aligning the stop of the cylinder block 200 with the insertion port of the cylinder block bracket 300. Then, the second drive assembly 33 drives the clamping mechanism 20 to move towards the cylinder block bracket 300, inserting the stop of the cylinder block 200 into the cylinder block bracket 300. Finally, the operator connects and secures the cylinder block 200 to the cylinder block bracket 300. During the reinstallation of the cylinder block 200, the relative position between the cylinder block 200 and the cylinder block bracket 300 can be adjusted by moving the bracket 10 to ensure that the axis of the cylinder block 200 coincides with the axis of the insertion port of the cylinder block bracket 300.

[0031] In this embodiment, the cylinder moving device 100 can automatically separate and connect the cylinder 200 and the cylinder bracket 300 by cooperating with the clamping mechanism 20 and the driving mechanism 30. The disassembly and assembly of the cylinder 200 does not require the use of scaffolding and lifting equipment, which simplifies the relevant procedures for disassembly, assembly and maintenance of the cylinder 200, reduces the difficulty and risk of operation, and improves the efficiency of cylinder 200 maintenance.

[0032] In the embodiments of this application, such as Figure 1 , Figure 3 and Figure 4 As shown, the clamping mechanism 20 includes a jaw mounting base 21, which provides a mounting base for a first jaw 22, a second jaw 23, and a first drive assembly 24. The first jaw 22 and the second jaw 23 are mounted on the jaw mounting base 21. The first jaw 22 and the second jaw 23 are spaced apart along a first direction, such that a clamping space 25 for the cylinder body 200 to pass through can be formed between the first jaw 22 and the second jaw 23. The first direction is perpendicular to the axial direction of the cylinder body 200, so that the cylinder body 200 can face the clamping space 25 between the first jaw 22 and the second jaw 23 and pass through it.

[0033] The first gripper 22 and the second gripper 23 are slidably mounted on the gripper mounting base 21. The first drive assembly 24 drives the first gripper 22 and the second gripper 23 to slide relative to the gripper mounting base 21 along a first direction, thereby causing the first gripper 22 and the second gripper 23 to move closer to each other to grip the cylinder 200, or to move away from each other to release the cylinder 200. At least one of the first gripper 22 and the second gripper 23 is connected to the drive end of the first drive assembly 24, for example, the first gripper 22 is connected to the drive end of the first drive assembly 24, or the second gripper 23 is connected to the drive end of the first drive assembly 24, or both the first gripper 22 and the second gripper 23 are connected to the drive end of the first drive assembly 24.

[0034] As an example, such as Figure 3 and Figure 4 As shown, the first drive assembly 24 includes a bidirectional lead screw 241 and a motor that drives the bidirectional lead screw 241 to rotate. The bidirectional lead screw 241 is arranged along a first direction. A first gripper 22 is connected to one end of the bidirectional lead screw 241, and a second gripper 23 is connected to the other end of the bidirectional lead screw 241. The two ends of the bidirectional lead screw 241 respectively form the drive ends of the first drive assembly 24. The motor drives the bidirectional lead screw 241 to rotate forward or in reverse, thereby driving the first gripper 22 and the second gripper 23 to move closer or further away from each other.

[0035] Alternatively, in other embodiments, the first drive component 24 may also include one or two linear modules, or one or two drive cylinders, etc.

[0036] In the embodiments of this application, such as Figure 1 , Figure 2 and Figure 5As shown, the drive mechanism 30 includes a first mounting base 31, a second mounting base 32, and a second drive assembly 33. The second drive assembly 33 is mounted on the bracket 10. The first mounting base 31 is mounted on the drive end of the second drive assembly 33, the second mounting base 32 is mounted on the first mounting base 31, and a third drive assembly 34 is mounted on the second mounting base 32. The gripper mounting base 21, i.e., the clamping mechanism 20, is mounted on the drive end of the third drive assembly 34. The second drive assembly 33 drives the first mounting base 31 to reciprocate linearly along a second direction. The second direction moves and drives the third mounting base and the clamping mechanism 20 on the third mounting base to move synchronously in the second direction. The second direction is perpendicular to the first direction, that is, the second direction is parallel to the axis of the cylinder 200. This adjusts the distance between the first gripper 22 and the second gripper 23 and the cylinder 200 along the axial direction of the cylinder 200. Alternatively, when the first gripper 22 and the second gripper 23 clamp the cylinder 200, they are used to move the cylinder 200 along the axial direction of the cylinder 200 to remove the cylinder 200 from the cylinder bracket 300, or to insert the cylinder 200 into the cylinder bracket 300.

[0037] The second drive component 33 can be a linear module or a drive cylinder, etc.

[0038] As an example, the second drive assembly 33 is a linear module. The first mounting base 31 is mounted on the lead screw of the linear module by a movable nut. The lead screw is arranged along the second direction. The rotation of the lead screw drives the first mounting base 31 to move linearly along the second direction.

[0039] In the embodiments of this application, such as Figure 1 Diagram and Figure 5 As shown, the drive mechanism 30 also includes a third drive assembly 34, which is mounted on the second mounting base 32. The gripper mounting base 21 is connected to the drive end of the third drive assembly 34. The third drive assembly 34 is used to drive the gripper mounting base 21, i.e., the clamping mechanism 20, to rotate around a third direction line as the axis. The third direction, the second direction, and the third direction are perpendicular to each other. The first direction is the extension direction of the axis of the cylinder 200, and the third direction is the direction perpendicular to the axis of the cylinder 200. Thus, after the first gripper 22 and the second gripper 23 clamp the cylinder 200, they can rotate relative to the axis of the cylinder 200 under the driving action of the third drive assembly 34, so that the stop of the cylinder 200 rotates from facing the cylinder support 300 to other directions. This ensures that the cylinder support 300 does not obstruct the cylinder 200, and the operator can inspect the plunger and other structures inside the cylinder 200 from the side of the cylinder support 300.

[0040] Understandably, the third drive component 34 is a rotary drive component, which can be a rotary drive cylinder or a linear motor rotary mechanism, etc.

[0041] Understandably, in the above embodiments, the third drive component 34 may also include a servo motor to improve the control accuracy of the rotation angle of the gripper mounting base 21.

[0042] In some embodiments, such as Figure 1 Diagram and Figure 5 As shown, the drive mechanism 30 also includes a fourth drive component 35, which is mounted on the second mounting base 32. The gripper mounting base 21 is connected to the drive end of the fourth drive component 35. The fourth drive component 35 is used to drive the gripper mounting base 21 to perform reciprocating linear motion along the first direction.

[0043] In this embodiment, the second mounting base 32 is also provided with a fourth driving component 35. The driving end of the fourth driving component 35 is also connected to the gripper mounting base 21, i.e. the clamping mechanism 20. The fourth driving component 35 is used to drive the gripper mounting base 21 to reciprocate linearly along the first direction, so as to adjust the relative position between the clamping mechanism 20 and the cylinder 200 along the first direction, so that the clamping space 25 between the first gripper 22 and the second gripper 23 can be aligned with the cylinder 200, or when reinstalling the cylinder 200, so that the cylinder 200 is better aligned with the cylinder bracket 300, thereby improving the docking accuracy between the cylinder 200 and the cylinder bracket 300.

[0044] The fourth drive component 35 can be a linear module or a drive cylinder, etc.

[0045] Thus, in this embodiment, the drive mechanism 30 includes a second drive component 33 and a fourth drive component 35. The second drive component 33 is used to drive the clamping mechanism 20 to move linearly along a first direction, and the fourth drive component 35 is used to drive the clamping mechanism 20 to move linearly along a second direction. The second direction is perpendicular to the first direction. The first direction is the axial direction of the cylinder 200, and the second direction is the radial direction of the cylinder 200. For example, the first direction is the horizontal direction, and the second direction is the vertical direction. The second drive component 33 and the fourth drive component 35 cooperate to adjust the horizontal and vertical positions of the clamping mechanism 20, thereby improving the accuracy of the clamping mechanism 20 in clamping the cylinder 200 and improving the accuracy of the cylinder 200 reinstallation.

[0046] Based on this, the drive mechanism 30 also includes a third drive component 34. The third drive component 34 drives the clamping mechanism 20 to rotate, and the axis of rotation is a line along the third direction. That is, when the clamping component clamps the cylinder 200, the third drive component 34 can drive the clamping mechanism 20 to rotate so that the axis of the cylinder 200 rotates to intersect or be perpendicular to the second direction, thereby adjusting the orientation of the stop of the cylinder 200 so that it is offset from the cylinder support 300, making it easier for operators to avoid the cylinder support 300 to inspect the plungers and other components inside the cylinder 200.

[0047] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the first gripper 22 has a first gripping surface 221 facing the second gripper 23, and the second gripper 23 has a second gripping surface 231 facing the first gripper 22. The gripping space 25 is located between the first gripping surface 221 and the second gripping surface 231. Both the first gripping surface 221 and the second gripping surface 231 are concave arc surfaces that are adapted to the shape of the cylinder body 200.

[0048] In this embodiment, the cylinder 200 is cylindrical, and the first clamping surface 221 and the second clamping surface 231 are set as concave arc surfaces. The shape of the concave arc surface is adapted to the shape of the outer side wall of the cylinder 200. During the clamping process of the cylinder 200, the first clamping surface 221 and the second clamping surface 231 can better fit against the surface of the cylinder 200. The contact area between the first jaw 22, the second jaw 23 and the cylinder 200 is increased, and the friction during the clamping process is increased. This can effectively improve the reliability of the first jaw 22 and the second jaw 23 in clamping the cylinder 200, and make it easier to exert force to move and pull out the heavy cylinder 200.

[0049] In some embodiments, Figure 3 and Figure 4 As shown, the first clamping surface 221 and the second clamping surface 231 are elastic surfaces.

[0050] In this embodiment, the first clamping surface 221 and the second clamping surface 231 are set as elastic surfaces. During the clamping process of the first gripper 22 and the second gripper 23, the elastic surfaces undergo elastic deformation under the extrusion force, thereby further improving their friction with the surface of the cylinder 200.

[0051] In some embodiments, Figure 3 and Figure 4 As shown, the first gripper 22 includes a first main body 222 and a first elastic member 223. The first elastic member 223 is detachably connected to the surface of the first main body 222 facing the second gripper 23. The second gripper 23 includes a second main body 232 and a second elastic member 233. The second elastic member 233 is detachably connected to the surface of the second main body 232 facing the first gripper 22. The elastic surface is provided on the first elastic member 223 and the second elastic member 233.

[0052] Thus, a first elastic element 223 is provided on the first main body 222 of the first gripper 22, and a second elastic element 233 is provided on the second main body 232 of the second gripper 23. On the one hand, the elastic surfaces are provided on the first elastic element 223 and the second elastic element 233, which can form a large frictional force with the surface of the cylinder 200, which helps the gripper to better clamp the cylinder 200 and exert force. On the other hand, the first elastic element 223 is detachably connected to the first main body 222, and the second elastic element 233 is detachably connected to the second main body 232. Different cylinders 200 of different weights can be adapted by replacing different first elastic elements 223 and second elastic elements 233. The first elastic element 223 or the second elastic element 233 can also be replaced in time when wear occurs.

[0053] In a specific embodiment, the first elastic element 223 and the second elastic element 233 can be elastic rubber or elastic silicone, etc. The first elastic element 223 and the second elastic element 233 can be detachably connected to the corresponding first main body 222 or second main body 232 by means of bonding, snapping or fastening.

[0054] Of course, in other embodiments, an adhesive layer can also be applied to the opposing surfaces of the first gripper 22 and the second gripper 23. The adhesive has a certain elasticity, thereby forming an elastic surface on the adhesive surface.

[0055] In some embodiments, such as Figure 2 and Figure 4 As shown, the clamping mechanism 20 also includes an auxiliary limiting component 40, which includes a limiting plate 41 and at least one positioning clamp 42 that can be adapted to be connected to the outside of the cylinder 200. The end of the positioning clamp 42 is detachably connected to the limiting plate 41, and the auxiliary limiting component 40 is detachably connected to the first gripper 22. When the auxiliary limiting component 40 is installed on the first gripper 22, the surface of the limiting plate 41 facing the positioning clamp 42 is in contact with the surface of the first gripper 22 facing away from the second gripper 23. The positioning clamp 42 can be adapted to extend into the clamping space 25 and cooperate with the first gripper 22 and the limiting plate 41 to clamp the cylinder 200.

[0056] In this embodiment, as Figure 2 and Figure 4As shown, the clamping mechanism 20 is also provided with an auxiliary limiting component 40, which is used to cooperate with the first gripper 22 and the second gripper 23 to improve the clamping reliability of the cylinder 200. Specifically, the auxiliary limiting component 40 includes a limiting plate 41 and a positioning clamp 42. The positioning clamp 42 can be connected to the limiting plate 41. In use, the limiting plate 41 is fixed to the side of the first gripper 22 that is away from the second gripper 23. After the positioning clamp 42 is clamped on the surface of the cylinder 200, the end of the positioning clamp 42 is connected to the limiting plate 41. By adjusting the fastening force between the positioning clamp 42 and the limiting plate 41, the limiting plate 41 is made to fit tightly against the first gripper 22. At the same time, the positioning clamp 42 and the first gripper 22 cooperate to clamp the cylinder 200. On this basis, the second gripper 23 simultaneously cooperates with the first gripper 22 to clamp the cylinder 200.

[0057] In this way, the cylinder body 200 can be clamped by the first gripper 22 and the second gripper 23, and at the same time, it can be subjected to the clamping force between the positioning clamp 42, the limiting plate 41 and the first gripper 22, thereby further improving the stability and reliability of the cylinder body 200 during movement and reducing the risk of the cylinder body 200 moving relative to the first gripper 22 and the second gripper 23 during the clamping process.

[0058] Understandably, the positioning clamp 42 is an open, unclosed ring structure. Its unclosed end is connected to the limiting plate 41. The limiting plate 41 and the positioning clamp 42 work together to form a closed inner ring space, which can be simultaneously engaged by the cylinder 200 and the first gripper 22.

[0059] In some embodiments, such as Figure 2 and Figure 4 As shown, the auxiliary limiting component 40 includes two positioning clamps 42. When the auxiliary limiting component 40 is installed on the first gripper 22, the two positioning clamps 42 are located on opposite sides of the first gripper 22 along the second direction.

[0060] In this embodiment, two positioning clamps 42 can be connected to the limiting plate 41. The two positioning clamps 42 can clamp the cylinder 200 on both sides of the first gripper 22 along the second direction, i.e., the axial direction of the cylinder 200, thereby further improving the clamping force between the cylinder 200 and the first gripper 22, and further improving the stability of the cylinder 200 during movement.

[0061] It should be noted that in other embodiments, the auxiliary limiting component 40 described above can also be used in conjunction with the second gripper 23, that is, the cylinder body 200 is clamped to the second gripper 23 by the auxiliary limiting component cooperating with the second gripper 23.

[0062] In some embodiments, such as Figure 1 , Figure 5and Figure 6 As shown, the bracket 10 is also provided with an auxiliary fixing member 50, which is located on the side of the bracket 10 and is used to detachably connect with the support structure 400 for installing the water pressure test pump.

[0063] In this embodiment, an auxiliary fixing member 50 is provided on the side of the bracket 10. The auxiliary fixing member 50 can be connected to the support structure 400 for installing the water pressure test pump, thereby fixing the bracket 10 to the support structure 400. That is, the relative position between the bracket 10 and the support structure 400 is limited, so that the bracket 10 is fixed relative to the support structure 400 by the auxiliary fixing member 50. This reduces the risk of position deviation caused by vibration or other reasons during the movement of the cylinder 200, reduces the difficulty of adjusting the position of the drive structure, and further improves the efficiency of disassembling and assembling the cylinder 200.

[0064] The auxiliary fastener 50 can be a snap-fit ​​structure that engages with the support structure 400, or a strap, clamp, or other structure that engages with the column or other parts of the support structure 400.

[0065] In some embodiments, such as Figure 1 , Figure 2 and Figure 6 As shown, the cylinder moving device 100 also includes a moving trolley 60, on which the bracket 10 is mounted, making the overall movement of the cylinder moving device 100 more flexible and convenient, and further improving its practicality.

[0066] In a specific embodiment, the mobile cart 60 includes a cart body and support legs mounted on the cart body. A bracket 10 is mounted on the upper part of the cart body, and the support legs are connected to the bottom of the cart body to support the cart body and its upper structure.

[0067] The support leg is detachably connected to the vehicle body. When the support leg interferes with the cylinder block bracket 300 or its supporting structure 400, the interference can be avoided by removing the support leg. Figure 5 and Figure 6 As shown. Alternatively, the mobile trolley 60 may include support legs of different lengths, and when the support legs interfere with the cylinder bracket 300 or its support structure 400, the interference can be avoided by replacing them with shorter support legs.

[0068] Please combine them together Figure 1 , Figure 2 and Figure 6 In a specific embodiment, the cylinder body moving device 100 in the above embodiments of this application can be used to move the cylinder body 200 of the water pressure test pump using the following steps: Step 1: Disassemble the check valves and their associated pipelines around the cylinder 200 of the water pressure test pump, and cut off the water supply; Step 2: Push the mobile trolley 60 to move the cylinder moving device 100 to the vicinity of the cylinder 200, and adjust the position of the clamping mechanism 20 through the drive mechanism 30 so that the clamping space 25 between the first clamp 22 and the second clamp 23 is aligned with the cylinder 200 along the axial direction of the cylinder 200. Step 3: The second drive assembly 33 drives the clamping mechanism 20 to move toward the cylinder 200 so that the cylinder 200 passes between the first clamp 22 and the second clamp 23. The first drive assembly 24 drives the first clamp 22 and the second clamp 23 to move closer to each other and clamp the cylinder 200. Step 5: Install the auxiliary limiting component onto the first gripper 22. The auxiliary limiting component and the first gripper 22 work together to clamp the cylinder body 200. Then, restart the first drive assembly 24 to continue clamping the cylinder body 200. Step 6: Remove the flange and other connecting parts between cylinder block 200 and cylinder block bracket 300; Step 7: Securely connect the auxiliary fixing part 50 on the side of the frame to the support structure 400 of the support cylinder bracket 300; Step 8: The second drive assembly 33 drives the clamping mechanism 20 to move along the second direction, i.e., the cylinder body 200 axial direction away from the cylinder body 200, separating the cylinder body 200 from the cylinder body bracket 300 until the cylinder body 200 is completely pulled out from the cylinder body bracket 300. Step 9: The third drive assembly 34 drives the cylinder body 200 to rotate until the stop is away from the bracket 10 and upright. The operator then inspects the internal plunger and other components. Step 10: After the overhaul is completed, follow the reverse operation steps to push the cylinder block 200 back into the cylinder block bracket 300 and connect the flange and other connecting structures between the cylinder block 200 and the cylinder block bracket 300. Step 11: The first drive assembly 24 drives the first gripper 22 and the second gripper 23 to move away from each other and release the cylinder 200. The auxiliary fixing part 50 is removed from the support structure 400. Finally, the mobile trolley 60 and the cylinder moving device 100 are moved out of the maintenance area as a whole.

[0069] Another embodiment of this application also provides a pump maintenance device, which includes the cylinder moving device 100 of the water pressure test pump of the above embodiments.

[0070] The pump maintenance equipment of this embodiment has the cylinder moving device 100 of the above embodiments, and therefore has at least all the beneficial effects of the cylinder moving device 100, which will not be described in detail here.

[0071] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cylinder moving device for a water pressure testing pump, characterized in that, include: support; A clamping mechanism is mounted on the bracket. The clamping mechanism includes a jaw mounting base, a first jaw, a second jaw, and a first drive assembly. The first jaw and the second jaw are spaced apart along a first direction and slidably mounted on the jaw mounting base. A clamping space is formed between the first jaw and the second jaw for adapting to accommodate the cylinder of the water pressure test pump. At least one of the first jaw and the second jaw is connected to the drive end of the first drive assembly. The first drive assembly is used to drive the first jaw and the second jaw to move closer or further away from each other to clamp or release the cylinder. The drive mechanism includes a first mounting base, a second mounting base, a second drive assembly, and a third drive assembly; Wherein, the first mounting base is mounted on the driving end of the second driving component, the second driving component is mounted on the bracket and is used to drive the first mounting base to reciprocate linearly along the second direction, the second mounting base is mounted on the first mounting base, the third driving component is mounted on the second mounting base, the gripper mounting base is connected to the driving end of the third driving component, and the third driving component is used to drive the gripper mounting base to rotate about a third direction line as an axis, wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The cylinder moving device of the water pressure test pump as described in claim 1, characterized in that, The first gripper has a first clamping surface facing the second gripper, and the second gripper has a second clamping surface facing the first gripper. The clamping space is located between the first clamping surface and the second clamping surface. Both the first clamping surface and the second clamping surface are concave arc surfaces adapted to the shape of the cylinder body.

3. The cylinder moving device of the water pressure test pump as described in claim 2, characterized in that, The first clamping surface and the second clamping surface are elastic surfaces.

4. The cylinder moving device of the water pressure test pump as described in claim 3, characterized in that, The first gripper includes a first main body and a first elastic member, wherein the first elastic member is detachably connected to the surface of the first main body facing the second gripper; The second gripper includes a second main body and a second elastic member, wherein the second elastic member is detachably connected to the surface of the second main body facing the first gripper; The elastic surface is provided on the first elastic element and the second elastic element.

5. The cylinder moving device of the water pressure test pump as described in claim 1, characterized in that, The clamping mechanism further includes an auxiliary limiting component, which includes a limiting plate and at least one positioning clamp that can be adapted to be fitted onto the cylinder body. The end of the positioning clamp is detachably connected to the limiting plate, and the auxiliary limiting component is detachably connected to the first gripper. When the auxiliary limiting component is installed on the first gripper, the surface of the limiting plate facing the positioning clamp is in contact with the surface of the first gripper facing away from the second gripper. The positioning clamp can be adapted to extend into the clamping space and cooperate with the first gripper and the limiting plate to clamp the cylinder.

6. The cylinder moving device of the water pressure test pump as described in claim 5, characterized in that, The auxiliary limiting component includes two positioning clamps. When the auxiliary limiting component is installed on the first gripper, the two positioning clamps are located on opposite sides of the first gripper along the second direction.

7. The cylinder moving device of the water pressure test pump as described in any one of claims 1 to 6, characterized in that, The driving mechanism further includes a fourth driving component, which is mounted on the second mounting base. The gripper mounting base is connected to the driving end of the fourth driving component, and the fourth driving component is used to drive the gripper mounting base to perform reciprocating linear motion along the first direction.

8. The cylinder moving device of the water pressure test pump as described in any one of claims 1 to 6, characterized in that, The bracket is also provided with an auxiliary fixing component, which is located on the side of the bracket and is used to detachably connect with the support structure for installing the water pressure test pump.

9. The cylinder moving device of the water pressure test pump as described in any one of claims 1 to 6, characterized in that, The cylinder moving device also includes a mobile trolley, and the bracket is mounted on the mobile trolley.

10. A pump maintenance device, characterized in that, Includes the cylinder moving device of the water pressure test pump as described in any one of claims 1 to 9.

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