Chuck-type disassembly tool and kit thereof

Abstract

The utility model discloses a chuck type dismounting tool and its kit. The chuck type dismounting tool includes clamping assembly, screw rod and force assembly. The clamping assembly includes at least two mutually spliced clamping blocks, and the clamping assembly has a center through hole after splicing, which is used for sleeving on the driving shaft. One end of each screw rod is detachably fixedly connected with the clamping assembly. The force assembly includes advancing nuts respectively threadedly sleeving on the at least two screw rods. During the screwing process, the end face of the advancing nut is used for directly or indirectly abutting on the driving wheel. The parallel double screw rods and the clamping assembly constitute a rigid frame. The force points are dispersed on the driving wheel, avoiding the dependence on and damage to the shaft center hole. By screwing the advancing nuts on the two or more screw rods synchronously, the uniform and stable thrust can be generated. The clamping assembly, the screw rod and the force assembly are all detachable modular components, and the universality is very strong. The structure is simple and compact, and the installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of mechanical tool technology, specifically to a chuck-type disassembly tool and its kit. Background Technology

[0002] In the maintenance and repair of heavy machinery, such as belt conveyors, speed reducers, and motors, it is often necessary to disassemble components such as drive wheels, bearings, and couplings mounted on the drive shaft. These components are usually installed with the shaft using an interference or tight fit method, and the connection is very firm, making it difficult to separate them by hand or using conventional tools.

[0003] Currently, the commonly used disassembly tool is the puller. For example, Chinese utility model patent CN 201799987 U discloses a combined puller, whose structure includes a double-arm suspended base with a puller screw located in the center of the base. Pulling force is applied by rotating the puller screw. The disadvantages of this structure are: first, the central puller screw needs to be pressed against the center hole of the drive shaft; if the shaft end face does not have a center hole, the center hole is damaged, or the shaft is hollow, it cannot be used; second, applying force at a single point may lead to uneven force distribution, easily causing tilting and jamming when disassembling large or heavy workpieces; third, the central base structure is relatively bulky and occupies a large space. Another prior art document, such as the tool disclosed in CN 216681944 U, also uses a central jack to apply force and has similar problems.

[0004] Therefore, developing a disassembly tool that is simple in structure, uniform in force distribution, widely applicable, independent of the shaft center hole, and highly safe is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a chuck-type disassembly tool and its kit to solve the technical problem that the drive wheel and drive shaft are difficult to separate in the prior art.

[0006] To achieve the above-mentioned technical objectives, this application adopts the following technical solution: In a first aspect, this application provides a chuck-type disassembly tool for separating a drive shaft and a drive wheel that are connected to each other, including a clamping assembly, a screw, and a force-applying assembly.

[0007] A clamping assembly comprising at least two clamping blocks that can be joined together, wherein the clamping assembly, when joined together, has a central through hole for being fitted onto the drive shaft; At least two parallel screws, one end of each screw being detachably fixedly connected to the clamping assembly; The force-applying assembly includes a push nut that is threaded onto at least two of the screws, and the end face of the push nut is used to directly or indirectly abut against the drive wheel during tightening.

[0008] In some embodiments of this application, the clamping assembly includes a first clamping block and a second clamping block arranged symmetrically, the outer edges of the first clamping block and the second clamping block being detachably connected by fastening bolts.

[0009] In some embodiments of this application, the force application assembly further includes a plurality of protective pads disposed between the push nut and the drive wheel.

[0010] In some embodiments of this application, the clamping block has at least two sets of connecting holes along the direction away from the central through hole, and the screw is connected to the clamping block by selecting different connecting holes to adjust the spacing between the at least two screws.

[0011] In some embodiments of this application, an inwardly protruding annular limiting step is integrally formed on the inner wall of the central through hole.

[0012] In some embodiments of this application, the outer peripheral surface of the push nut is hexagonal or has multiple symmetrical wrench holes, and a ratchet wrench is connected to the push nut, the ratchet wrench being equipped with a reverse switch.

[0013] In some embodiments of this application, the inner surface of the push nut that contacts the drive wheel is provided with a knurled texture, a granular coating, or a flexible friction pad layer.

[0014] In some embodiments of this application, an adjusting sleeve is further included, which is respectively sleeved on at least two of the screws. The adjusting sleeve is located between the push nut and the drive wheel. The screw body is engraved with a length scale, and the adjusting sleeve is marked with a length specification.

[0015] In some embodiments of this application, a force measuring device is integrated at the connection between the screw and the clamping assembly or in the force application assembly.

[0016] Secondly, this application also provides a chuck-type disassembly tool kit, comprising at least two sets of chuck-type disassembly tools as described in any one of the first aspects, including: At least two clamping assemblies with different inner diameter specifications; Multiple sets of screws of different lengths and specifications; And a force application assembly adapted to the screw.

[0017] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include: This application utilizes parallel twin screws and the clamping assembly itself to form a rigid frame. The force application is distributed across the drive wheels, avoiding dependence on and damage to the shaft's center hole. By simultaneously tightening the push nuts on two or more screws, a uniform and stable thrust is generated, ensuring the workpiece to be disassembled is smoothly pulled out axially, effectively preventing tilting, jamming, or workpiece damage caused by uneven force. The clamping assembly, screws, and force application assembly are all detachable modular components. Different specifications of clamping blocks and screws can be flexibly replaced according to the diameter of the workpiece to be disassembled, the length of the disassembly stroke, and other on-site conditions, making it highly versatile. The structure is simple and compact, and installation is convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the embodiments will be briefly described below: Figure 1 This is a schematic diagram of the structure of a chuck-type disassembly tool in an embodiment of this application.

[0019] Figure label: 1-Clamping assembly; 11-First clamping block; 12-Second clamping block; 13-Fasting bolt; 14-Center through hole; 15-Connecting hole; 2-Screw; 3-Force application assembly; 31-Push nut; 32-Protective pad; 4-Drive shaft; 5-Drive wheel; 6-Ratchet wrench. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] Those skilled in the art will understand that, in this specification, the term "comprising" is an open-ended expression, meaning that the stated feature is present but other features are excluded. Directional terms such as "upper," "lower," "left," and "right" refer to exemplary directions based on the accompanying drawings. Features specified as "first" or "second" implicitly include one or more of that feature. Singular expressions can also be used in plural forms. "Multiple" means two or more. The terms "installed," "connected," and "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection via an intermediate medium, and it can be a connection within two components. Furthermore, "linked" can include wireless connections.

[0022] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a chuck-type disassembly tool and its kit to solve the technical problem that the drive wheel 5 and drive shaft 4 are difficult to separate in the prior art.

[0023] To achieve the above-mentioned technical objectives, this application adopts the following technical solution: like Figure 1 As shown. In a first aspect, this application provides a chuck-type disassembly tool for separating a drive shaft 4 and a drive wheel 5 that are interconnected, including a clamping assembly 1, a screw 2, and a force-applying assembly 3.

[0024] The clamping assembly 1 includes at least two clamping blocks that can be joined together. After being joined together, the clamping assembly 1 has a central through hole 14 for being sleeved on the drive shaft 4. At least two parallel screws 2, one end of each screw 2 being detachably fixedly connected to the clamping assembly 1; The force application assembly 3 includes a push nut 31 threaded onto at least two screws 2. During the tightening process, the end face of the push nut 31 is used to directly or indirectly abut against the drive wheel 5.

[0025] This application utilizes parallel twin screws 2 and the clamping assembly 1 to form a rigid frame. The force application is distributed across the drive wheel 5, avoiding dependence on and damage to the shaft's center hole. By simultaneously tightening the push nuts 31 on two or more screws 2, a uniformly distributed and stable thrust is generated, ensuring the workpiece to be disassembled is smoothly pulled out axially, effectively preventing tilting, jamming, or workpiece damage caused by uneven force. The clamping assembly 1, screws 2, and force application assembly 3 are all detachable modular components. Different specifications of clamping blocks and screws 2 can be flexibly replaced according to the diameter of the workpiece to be disassembled, the length of the disassembly stroke, and other on-site conditions, making it highly versatile. The structure is simple and compact, and installation is convenient.

[0026] This embodiment provides a chuck-type disassembly tool for removing a workpiece, such as the drive wheel 5, that is tightly fitted onto the drive shaft 4. The tool mainly includes a clamping assembly 1, at least two screws 2, and a force-applying assembly 3.

[0027] In this embodiment, the clamping assembly 1 consists of at least two clamping blocks that can be joined together. Specifically, it includes a first clamping block 11 and a second clamping block 12 arranged symmetrically. The outer edges of the two clamping blocks are detachably connected as a whole by a plurality of fastening bolts 13. When the first clamping block 11 and the second clamping block 12 are joined together, a central through hole 14 is formed inside. In use, the two clamping blocks are closed from both sides of the drive shaft 4 and fitted onto the drive shaft 4, and then the fastening bolts 13 are tightened to firmly hold the clamping assembly 1 onto the drive shaft 4. The inner wall of the central through hole 14 is designed to abut against the drive shaft 4, thereby providing effective axial restraint and pulling force when force is applied subsequently.

[0028] The screw 2 is a high-strength screw 2, and two screws are used in this embodiment, which are arranged in parallel. One end of each screw 2 is detachably fixed to the clamping assembly 1 by means of threads or pins.

[0029] The force-applying assembly 3 is used to generate disassembly force. It includes push nuts 31, which are threaded onto two screws 2 respectively. During disassembly, the operator uses a wrench to simultaneously tighten the two push nuts 31. The end faces of the push nuts 31 advance and eventually abut against the drive wheel 5. Continuing to tighten the push nuts 31 generates a strong thrust (force) on the end face of the drive wheel 5. Relative movement occurs between the push nuts 31 and the clamping assembly 1. The clamping assembly 1 limits the drive shaft 4, and the two remain relatively stationary. The push nuts 31 abut against the drive wheel 5 to be disassembled, and the two remain relatively stationary. Then, relative movement occurs between the drive wheel 5 and the drive shaft 4, thereby smoothly pushing the drive wheel 5 off the drive shaft 4.

[0030] In some embodiments of this application, the clamping assembly 1 includes a first clamping block 11 and a second clamping block 12 arranged symmetrically, and the outer edges of the first clamping block 11 and the second clamping block 12 are detachably connected by fastening bolts 13.

[0031] In some embodiments of this application, the force application assembly 3 further includes a plurality of protective pads 32, which are disposed between the push nut 31 and the drive wheel 5.

[0032] In a preferred embodiment, to protect the end face of the drive shaft 4 from wear or damage, the force application assembly 3 also includes a protective pad 32. This protective pad 32 is positioned between the push nut 31 and the drive wheel 5, effectively dispersing pressure and protecting the drive wheel 5.

[0033] In some embodiments of this application, at least two sets of connecting holes 15 are provided on the clamping block along the direction away from the central through hole 14, and the screw 2 is connected to the clamping block by selecting different connecting holes 15 to adjust the spacing between the at least two screws 2.

[0034] To improve the tool's versatility, at least two sets of connecting holes 15 are formed on the clamping blocks, the first clamping block 11 and the second clamping block 12, in a radial direction away from the central through hole 14. The screws 2 can be connected to the clamping assembly 1 by selecting different connecting holes 15. When disassembling workpieces with larger diameters, the outer connecting hole 15 is used to increase the distance between the two screws 2, providing sufficient space for the workpiece; conversely, the inner connecting hole 15 is used. This design allows one tool set to accommodate workpieces of various diameters.

[0035] In some embodiments of this application, the outer peripheral surface of the push nut 31 is hexagonal or has multiple symmetrical wrench holes, and a ratchet wrench 6 is connected to the push nut 31, the ratchet wrench 6 being equipped with a reverse switch.

[0036] For ease of operation, the outer circumference of the push nut 31 is set to hexagon or has multiple symmetrical wrench holes, which facilitates tightening with a standard socket wrench, open-end wrench or special pry bar to apply sufficient torque.

[0037] In some embodiments of this application, the inner surface of the push nut 31 that contacts the drive wheel 5 is provided with a knurled texture, a granular coating, or a flexible friction pad layer.

[0038] To enhance clamping reliability and prevent slippage under high tensile forces, the clamping blocks and the inner surfaces in contact with the workpiece can be equipped with knurled textures, hard alloy particle coatings, or replaceable flexible friction pads. These structures increase the coefficient of friction of the contact surfaces, ensuring effective transmission of tensile force.

[0039] In some embodiments of this application, an adjusting sleeve is further included, which is respectively sleeved on the at least two screws 2. The adjusting sleeve is located between the push nut 31 and the drive wheel 5. The screw 2 has a length scale engraved on its body, and the adjusting sleeve is marked with a length specification.

[0040] To accommodate varying disassembly stroke requirements, this tool may also include adjusting sleeves fitted onto the screw 2. These adjusting sleeves are hollow tubes of different standard lengths. When the end face of the drive shaft 4 is positioned deep relative to the workpiece to be disassembled, one or more adjusting sleeves can be placed between the push nut 31 and the end face of the drive shaft 4 to quickly shorten the rotation stroke of the push nut 31. Furthermore, the screw 2 may have a length scale engraved on its body, and the adjusting sleeves may also be marked with their length specifications. This facilitates accurate calculation and configuration of the required disassembly stroke by the operator, improving work efficiency.

[0041] In some embodiments of this application, a force measuring device is integrated at the connection between the screw 2 and the clamping assembly 1 or in the force application assembly 3.

[0042] To monitor the disassembly process in real time and prevent damage to the workpiece or tools due to excessive force, a force measuring device, such as a ring pressure sensor, can be integrated at the connection between the screw 2 and the clamping assembly 1, or in the force application assembly 3, for example, between the push nut 31 and the protective pad 32. This device can display the current disassembly pull value in real time, providing data reference for the operator and enabling safe and accurate disassembly.

[0043] Secondly, this application also provides a chuck-type disassembly tool kit, comprising at least two sets of chuck-type disassembly tools as described in any one of the first aspects, including: At least two clamping assemblies with different inner diameter specifications 1; Multiple sets of screws of different lengths and specifications; And a force-applying assembly 3 adapted to the screw 2.

[0044] An inwardly protruding annular limiting step can be integrally formed on the inner wall of the central through hole 14 of the clamping assembly 1. The end face of this step is specifically designed to abut against the end face of the workpiece to be disassembled, such as against the gear disk on the drive shaft (not shown in the figure). Compared to contacting the drive shaft with the circumferential surface of the inner hole, the contact of the limiting step provides a more stable and reliable limiting, and can withstand greater tensile force without easily slipping.

[0045] To further compensate for alignment errors during installation, the connection between screw 2 and clamping assembly 1 can be made using a universal joint or ball joint. This flexible connection allows screw 2 to swing within a certain angle range, ensuring that even if clamping assembly 1 is slightly misaligned during installation, the two screws 2 remain basically parallel and the force is evenly distributed.

[0046] To ensure precise coaxial alignment between the clamping assembly 1 and the drive shaft 4 during installation, a centering device can be installed on the clamping assembly 1, such as three centering screws evenly distributed at 120 degrees and capable of radial telescoping and telescoping. During installation, the clamping assembly 1 is first aligned using the centering screws, and then the fastening bolts 13 are tightened, which can significantly improve installation accuracy and the smoothness of disassembly.

[0047] For heavy-duty, large-sized dismantling tools, lifting rings or lugs can be installed on the clamps to connect to lifting equipment for easy handling and installation.

[0048] From an overall structural perspective, the clamping assembly 1, screw 2, and force application assembly 3 of this invention form a self-enclosed rigid frame during operation. All tension and pressure are balanced within this frame, eliminating the need for any external puller base or support. This makes its structure exceptionally compact, making it ideal for operation in confined spaces.

[0049] This utility model also provides a chuck-type disassembly tool kit. The kit houses tool components of different sizes within a dedicated toolbox, facilitating management and portability. The kit includes: At least two clamping assemblies 1 with different inner diameter specifications are provided to accommodate workpieces with different shaft diameters.

[0050] Multiple sets of screws 2 of different lengths are used to meet different disassembly stroke requirements.

[0051] The force application assembly 3 adapted to the screw 2 may include push nuts 31 of different sizes and protective pads 32 of various specifications, and adjusting sleeves.

[0052] This modular configuration allows users to quickly assemble the most suitable disassembly tools according to on-site needs, greatly expanding the versatility and economy of the tools.

[0053] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include: Structural innovation to avoid damage: This utility model abandons the traditional central base and central top rod structure, and forms a rigid frame with the clamping assembly 1 through parallel double screws 2 (or multiple screws 2). The force application points are distributed on the circumference of the end face of the drive shaft 4, avoiding dependence on and damage to the shaft's central hole, and is particularly suitable for occasions with no central hole, hollow shafts, or shafts with precision sensors installed at the ends.

[0054] Uniform force distribution and smooth disassembly: By simultaneously tightening the push nuts 31 on two or more screws 2, a uniform and stable thrust can be generated. This thrust is converted into a strong pulling force on the clamping assembly 1, ensuring that the workpiece to be disassembled is pulled out smoothly along the axial direction, effectively avoiding the phenomenon of tilting, jamming or damage to the workpiece caused by uneven force distribution.

[0055] Modular design with strong adaptability: The clamping assembly 1, screw 2, and force application assembly 3 are all detachable modular components. Different specifications of clamping blocks and screw 2 can be flexibly replaced according to the on-site working conditions such as the diameter of the workpiece to be disassembled and the length of the disassembly stroke, making it extremely versatile.

[0056] Easy to operate and highly safe: The structure is simple and compact, and installation is convenient. Operators can operate with a long-handled wrench from a distance away from the disassembly area, and the disassembly force is controllable, the process is smooth, and the safety of the operation is greatly improved.

[0057] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, processes, and procedures discussed in this application can be alternated, modified, rearranged, decomposed, combined, or deleted.

[0058] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A chuck-type dismounting tool for separating a driving shaft and a driving wheel connected to each other, characterized in that, include: A clamping assembly comprising at least two clamping blocks that can be joined together, wherein the clamping assembly, when joined together, has a central through hole for being fitted onto the drive shaft; At least two parallel screws, one end of each screw being detachably fixedly connected to the clamping assembly; The force-applying assembly includes a push nut that is threaded onto at least two of the screws, and the end face of the push nut is used to directly or indirectly abut against the drive wheel during tightening.

2. The socket-type removal tool according to claim 1, characterized by The clamping assembly includes a first clamping block and a second clamping block arranged symmetrically, and the outer edges of the first clamping block and the second clamping block are detachably connected by fastening bolts.

3. The socket-type removal tool according to claim 1, wherein The force application assembly also includes a plurality of protective pads disposed between the push nut and the drive wheel.

4. The socket-type removal tool according to claim 1, characterized by The clamping block has at least two sets of connecting holes along the direction away from the central through hole. The screws are connected to the clamping block by selecting different connecting holes to adjust the spacing between at least two screws.

5. The socket-type removal tool according to claim 1, wherein An inwardly protruding annular limiting step is integrally formed on the inner wall of the central through hole.

6. The socket-type removal tool according to claim 1, wherein The outer circumferential surface of the push nut is hexagonal or has multiple symmetrical wrench holes, and a ratchet wrench is connected to the push nut, the ratchet wrench being equipped with a reverse switch.

7. The socket-type removal tool according to claim 1, wherein The inner surface of the push nut that contacts the drive wheel is provided with a knurled texture, a granular coating, or a flexible friction pad layer.

8. The socket-type removal tool according to claim 1, wherein It also includes adjusting sleeves respectively fitted on the at least two screws, the adjusting sleeves being located between the push nut and the drive wheel, the screws having length markings engraved on their bodies, and the adjusting sleeves having length specifications marked on them.

9. The socket-type removal tool according to claim 1, wherein A force measuring device is integrated at the connection between the screw and the clamping assembly or in the force application assembly.

10. A kit of chuck-type removal tools, characterized in that, Includes at least two sets of chuck-type disassembly tools as described in any one of claims 1-9, comprising: At least two clamping assemblies with different inner diameter specifications; Multiple sets of screws of different lengths and specifications; And a force-applying assembly adapted to the screw.

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