A wheel pulling device

Abstract

The application provides a wheel pulling device for disassembling a rotating wheel component of a construction machine, which comprises a center plate, a rotating base, a jacking screw, a plurality of arm plates and a plurality of fixing structures; the rotating base is fixedly arranged on the center plate and is provided with an internal thread structure; the jacking screw is rotatably inserted into and penetrates through the rotating base, and is provided with an external thread structure which is engaged with the internal thread structure; the plurality of arm plates are fixedly arranged on the center plate in a radial manner, and the plurality of fixing structures are respectively arranged on the plurality of arm plates and used for fixing the rotating wheel component to be disassembled; the jacking screw is used for driving the rotating base to move by rotating, and then driving the center plate, the arm plates and the fixing structures to move, so that the rotating wheel component is driven to move to disassemble the rotating wheel component.

Description

Technical Field

[0001] This application relates to the field of engineering machinery, and in particular to a wheel-pulling device for disassembling the wheels of large engineering machinery. Background Technology

[0002] When disassembling and transporting construction machinery, puller devices are often needed to remove pulleys, flywheels, and other rotating components. For large construction machinery such as sand and gravel crushing equipment, the rotating components are also very large and heavy, and manual puller devices cannot provide sufficient driving force. Therefore, in existing technology, puller devices for large construction machinery generally use specially configured pushers, such as hydraulic jacks, to provide the driving force to pull the pulleys. However, these pushers themselves are expensive to manufacture and use, and their structure is relatively complex, making them prone to failure.

[0003] In view of this, it is necessary to provide a puller device that is more suitable for large-scale engineering machinery to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of this application is to provide a wheel-pulling device for disassembling the wheels of large engineering machinery, which has a simpler structure and lower manufacturing and use costs compared with the prior art.

[0005] A preferred embodiment of this application provides a wheel-pulling device for disassembling wheel components of construction machinery. The wheel-pulling device includes a center plate, a rotating base, a lifting screw, multiple arm plates, and multiple fixing structures. The rotating base is fixedly mounted on the center plate and has an internal thread structure. The lifting screw is rotatably inserted into and passes through the rotating base and has an external thread structure that engages with the internal thread structure. The multiple arm plates are radially fixedly mounted on the center plate, and the multiple fixing structures are respectively mounted on the multiple arm plates for fixing to the wheel components to be disassembled. The lifting screw drives the rotating base to move by rotation, thereby driving the center plate, the arm plates, and the fixing structures to move, thus moving the wheel components to disassemble them.

[0006] In some embodiments, the arm plate is provided with a lifting section for lifting the puller device and the rotating wheel component fixed on the puller device, and the lifting section has a lifting hole.

[0007] In some embodiments, the arm plate is further formed with a locking groove into which the outer edge of the center plate is embedded.

[0008] In some embodiments, the puller device further includes a central sleeve fixedly mounted on the central plate, the central sleeve communicating with the rotating base, and the lifting screw inserted into the central sleeve and the rotating base; the arm plate is fixedly connected to the central sleeve.

[0009] In some embodiments, the puller device further includes a winch fixedly mounted on one end of the lifting screw.

[0010] In some embodiments, the end of the lifting screw opposite to the end on which the winch is mounted extends from the rotating base to abut against the pivot at the center of the wheel assembly when the wheel assembly is disassembled.

[0011] In some embodiments, the fixing structure includes a pull lug assembly and a buckle plate. The pull lug assembly is fixedly mounted on one end of the arm plate, and the buckle plate is detachably mounted on the pull lug assembly for cooperating with the pull lug assembly to fix the spokes of the wheel component.

[0012] In some embodiments, the pull lug assembly includes a pull plate and two pull lugs fixed to the pull plate, one end of the arm plate is fixed between the two pull lugs, and the buckle plate is detachably mounted on the pull plate, such that a fixing frame for securing the spokes of the wheel component is formed between the pull plate and the buckle plate body.

[0013] In some embodiments, the pull lug assembly further includes a reinforcing plate that is fixedly connected to both the pull plate and the pull lug.

[0014] In some embodiments, the center plate has a base hole for mounting the rotating base and a weight-reducing hole for reducing weight, both of which penetrate both sides of the center plate.

[0015] Compared to existing technologies, all components of the puller device provided in the above embodiments of this application are simple mechanical structures, eliminating the need for costly and complex pushers such as hydraulic jacks. Therefore, the cost is lower and the device is less prone to damage. Clearly, the embodiments of this application effectively solve the problems of high cost and susceptibility to failure of the pushers used in existing puller devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a puller device provided in a preferred embodiment of this application.

[0018] Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of the puller device shown.

[0019] Figure 3 yes Figure 1 A top view of the center plate of the puller device shown.

[0020] Figure 4 yes Figure 1 A side view of the arm plate of the puller device shown.

[0021] Figure 5 yes Figure 1 The diagram shows the structural schematic of the pull lug assembly of the puller device.

[0022] Figure 6 yes Figure 1 A side view of the buckle plate of the pull-out wheel device shown.

[0023] Figure 7 yes Figure 1 A top view of the buckle plate of the pull-out wheel device shown. Detailed Implementation

[0024] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this application. Based on the description of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0025] Please refer to the following first. Figure 1 and Figure 2 A preferred embodiment of this application provides a wheel-pulling device 100 for disassembling pulleys, flywheels, and other rotating wheel components of large engineering machinery (such as sand and gravel crushing equipment). The wheel-pulling device 100 includes a center plate 1, a rotating base 2, a center sleeve 3, a lifting screw 4, a winch 5, multiple arm plates 6, and multiple fixing structures 7 corresponding to the multiple arm plates 6.

[0026] Please refer to the following: Figure 3The center plate 1 is a circular flat plate with a base hole 11 in the center. It may also have multiple weight-reducing holes 12. Both the base hole 11 and the weight-reducing holes 12 penetrate both sides of the center plate 1. The rotating base 2 is approximately cylindrical, with its outer diameter matching the inner diameter of the base hole 10. An internal thread structure (not shown in the figure) is formed on its inner wall. The rotating base 2 is inserted into the base hole 11, coaxially arranged with the center plate 1, and its outer wall is fixed to the center plate 1. In this embodiment, a radially protruding flange 21 is formed on the outer circumferential surface of one end of the rotating base 2. The flange 21 abuts against one side surface of the center plate 1 and is preferably also fixed to the center plate 1, making the assembly of the rotating base 2 and the center plate 1 more stable.

[0027] The central sleeve 3 is a cylindrical sleeve, with one end fixedly connected to the other side surface of the back flange 21 of the central plate 1. That is, the flange 21 of the rotating base 2 and the central sleeve 3 are respectively connected to opposite sides of the central plate 1. The central sleeve 3 is coaxially arranged with the central plate 1 and the rotating base 2, ensuring that the rotating base 2 and the central sleeve 3 are coaxially aligned, thereby coaxially communicating the internal spaces of the rotating base 2 and the central sleeve 3 to form a screw channel. The inner diameter of the central sleeve 3 is not less than the inner diameter of the rotating base 2, and preferably is larger than the inner diameter of the rotating base 2 to a certain extent.

[0028] The lifting screw 4 is a cylindrical rod inserted into the screw channel formed by the rotating base 2 and the central sleeve 3. The outer diameter of the lifting screw 4 matches the inner diameter of the rotating base 2, and at least a portion of the outer surface of the lifting screw 4 has an external thread structure (not labeled in the figure). The external thread structure matches and meshes with the internal thread structure on the inner wall of the rotating base 2, allowing the lifting screw 4 to rotate within the rotating base 2. By rotating the lifting screw 4, it can be driven to move linearly along its own axial direction (which can be understood as the common axial direction of the central plate 1, the rotating base 2, and the central sleeve 3). One end of the lifting screw 4 passes through the rotating base 2 and extends out from the end of the rotating base 2 with a flange 21.

[0029] The winch 5 is a straight rod and is fixedly mounted on the other end of the lifting screw 4. In this embodiment, it is preferably mounted on the end of the lifting screw 4 that extends from the outer opening of the central sleeve 3 (i.e., the opening at the end of the central sleeve 3 facing away from the central plate 1). The length direction of the winch 5 is preferably perpendicular to the axial direction of the lifting screw 4. In this embodiment, the aforementioned end of the lifting screw 4 is preferably fixed at the midpoint of the winch 5.

[0030] The arm plate 6 is roughly a straight, flat plate. Multiple arm plates 6 are radially fixed on the center plate 1, meaning that the multiple arm plates 6 extend outward from the center of the center plate 1 along different radial directions. Preferably, the included angles between adjacent arm plates 6 are equal, so that the multiple arm plates 6 are evenly distributed on the center plate 1.

[0031] Please refer to the following: Figure 4 The arm plate 6 has a straight, flat arm plate body 61. A first rib 62 and a second rib 63 are formed at one end of the arm plate body 61 along its length. Both the first rib 62 and the second rib 63 are straight, flat plates, and their lengths are aligned with the length of the arm plate body 61. A locking groove 64 is formed between the first rib 62 and the second rib 63. In this embodiment, preferably, the length of the first rib 62 is equal to the radius of the center plate 1, while the length of the second rib 63 is less than the length of the first rib 62. It is understood that the arm plate body 61, the first rib 62, and the second rib 63 can all be integrally formed.

[0032] The arm plate body 61 has a first assembly hole 65 at one end along its length, penetrating both sides of the arm plate body 61. A portion of the middle edge of the arm plate body 61 also protrudes outward to form a lifting section 66, which has a lifting hole 67 penetrating both sides of the arm plate body 61. In this embodiment, it is preferable that the width of the section of the arm plate body 61 located between the lifting section 66 and the end with the first assembly hole 65 is gradually reduced along the direction from the lifting section 66 to the end with the first assembly hole 65, in order to reduce the overall weight.

[0033] In this embodiment, when the arm plate 6 is installed onto the center plate 1, the outer edge of the center plate 1 is embedded into the engaging groove 64 of the arm plate 6, and the protruding direction of the lifting part 66 faces the side of the center plate 1 connected to the center sleeve 3. The end of the first stiffener 62 abuts against the outer sidewall of the center sleeve 3, so that the end of the arm plate body 61 with the first assembly hole 65 faces the outside of the center plate 1. Then, the center plate 1 and the center sleeve 3 are fixedly connected to the arm plate 6. The specific connection method can be, for example, conventional welding, riveting, etc. Multiple arm plates 6 are fixedly installed onto the center plate 1 according to the above method, and the multiple arm plates 6 are evenly distributed radially with the center plate 1 as the center. Since the length of the first stiffener 62 is equal to the radius of the center plate 1, almost the entire length of the arm plate body 61 can extend out from the outside of the center plate 1, providing sufficient assembly space for the fixing structure 7.

[0034] It is understandable that, in order to further improve the connection strength between the arm plate 6 and the center plate 1, multiple locking grooves 13 can be opened on the center plate 1. These locking grooves 13 correspond to the locking grooves 64 of the multiple arm plates 6, respectively, and open on the periphery of the center plate 1 and extend radially along the center plate 1, such as... Figure 3 As shown. During assembly, the engagement groove 64 of the arm plate 6 can be aligned with the engagement groove 13 of the center plate 1, and the arm plate 6 and the center plate 1 can be embedded into each other. Then the arm plate 6 and the center plate 1 can be fixed to each other. This can further increase the engagement range and connection area of ​​the arm plate 6 and the center plate 1.

[0035] Multiple fixing structures 7 correspond one-to-one with multiple arm plates 6, and are respectively installed at the end of the corresponding arm plate 6 that extends from the center plate 1, that is, at the end of the arm plate body 61 in which the assembly hole 65 is opened. The fixing structure 7 is used to connect with pulleys, flywheels and other wheel components that need to be disassembled.

[0036] Please refer to the following: Figure 5 , Figure 6 and Figure 7 The fixing structure 7 includes a pull lug assembly 8 and a buckle plate 9.

[0037] The pull lug assembly 8 includes a pull plate 81 and two pull lugs 82. The pull plate 81 is a straight, flat plate with pull plate connection holes 811 at both ends. The pull lugs 82 are flat plates with a straight bottom edge, two straight side edges, and a rounded, outwardly protruding top edge. The two side edges connect the bottom edge and the top edge and are perpendicular to the bottom edge. A second assembly hole 821, penetrating both sides of the pull lug 82, is provided near its top edge. The second assembly hole 821 corresponds to the aforementioned first assembly hole 65. The two pull lugs 82 are fixed to the same side surface of the pull plate 81 by existing techniques such as welding, and the two pull lugs 82 are arranged parallel to each other, with the spacing between them adapted to the width of the arm plate body 61. One end of the arm plate body 61 with a first assembly hole 65 is inserted between two lugs 82. The first assembly hole 65 is aligned with the second assembly holes 821 of the two lugs 82. Connecting elements such as existing bolts and pins (not labeled in the figure) are passed through the first assembly hole 65 and the two second assembly holes 821 and fixed, thereby fixing the lug assembly 8 to the end of the arm plate 6.

[0038] In this embodiment, the pull lug assembly 8 preferably further includes a plurality of reinforcing plates 83. The reinforcing plates 83 are generally in the shape of right-angled triangular flat plates. One right-angled side of each reinforcing plate 83 is fixedly connected to the surface of the pull plate 81 on which the pull lug 82 is mounted by existing technical means such as welding, and the other right-angled side is fixedly connected to the outer surface of the pull lug 82 (i.e., the side surface of each pull lug 82 facing away from the parallel other pull lug 82) by existing technical means such as welding, so as to make the connection between the pull lug 82 and the pull plate 81 more secure.

[0039] It is understood that, in order to further improve the connection strength between the pull plate 81, the pull lug 82, and the reinforcing plate 83, insertion holes (not labeled in the figure) can be formed on the pull plate 81 and the pull lug 82, and protruding inserts (not labeled in the figure) corresponding to the insertion holes can be formed on the pull lug 82 and the reinforcing plate 83. The inserts are inserted into the corresponding insertion holes and fixed by existing technical means such as welding, thereby further increasing the connection area between the pull plate 81, the pull lug 82, and the reinforcing plate 83. In other embodiments, the pull plate 81, the pull lug 82, and the reinforcing plate 83 can also be integrally formed.

[0040] The snap-on plate 9 has a straight, flat snap-on plate body 91. Connecting plates 92 are formed at both ends of the snap-on plate body 91, and a laminating plate 93 is formed at the end of each connecting plate 92. Both connecting plates 92 and laminating plates 93 are flat. The two connecting plates 92 are both located in planes perpendicular to and parallel to the plane of the snap-on plate body 91; the two laminating plates 92 are both located in the same plane parallel to the plane of the snap-on plate body 91. Each laminating plate 92 has snap-on plate connecting holes 921 extending through its two side surfaces, and these two snap-on plate connecting holes 921 correspond to the pull plate connecting holes 811 at both ends of the pull plate 81. After aligning the two buckle plate connecting holes 921 with the two pull plate connecting holes 811 respectively, connecting elements such as existing bolts and pins (not labeled in the figure) can be passed through the aligned buckle plate connecting holes 921 and pull plate connecting holes 811 respectively and fixed, so that the buckle plate 9 and the pull lug assembly 8 can be fixed to each other. The buckle plate body 91 and the pull plate 81 are separated by a certain distance through the connecting plate 92, so that a fixing frame 90 for the spokes of the wheel component is formed between the pull plate 81 and the buckle plate body 91.

[0041] The following describes how to use the puller device 100.

[0042] When using the puller device 100 to disassemble the flywheel, pulley and other rotating wheel components, first assemble the center plate 1, rotating base 2, center sleeve 3, lifting screw 4, winch 5, multiple arm plates 6 and multiple fixing structures 7 pull lug assemblies 8 together according to the above assembly method, but do not assemble the buckle plate 9 with the pull lug assembly 8 for the time being, that is, first assemble the puller device 100 without the buckle plate 9 installed.

[0043] Then, using existing lifting machinery, such as a crane, the lifting holes 67 on each boom plate 6 are hooked up to lift the entire puller device 100, which has not yet been fitted with the buckle plate 9. It is understood that the specific method of the above lifting operation can also be adjusted according to actual needs. For example, if the wheel component to be disassembled is horizontal, all the lifting holes 67 on the boom plates 6 can be hooked up simultaneously for lifting, so that the entire puller device 100, which has not yet been fitted with the buckle plate 9, is also horizontal, facilitating alignment with the wheel component; if the wheel component to be disassembled is vertical, only some of the lifting holes 67 on the boom plates 6 can be hooked up for lifting, so that the entire puller device 100, which has not yet been fitted with the buckle plate 9, is also vertical, facilitating alignment with the wheel component.

[0044] After lifting the wheel-pulling device 100 before the fastener 9 is installed, it is moved to the location of the wheel component to be disassembled and aligned with it. The multiple spokes of the wheel component are aligned with the multiple arm plates 6 of the wheel-pulling device 100 and the pull lug assemblies 8 installed at the ends of the arm plates 6. The end of the lifting screw 3 located at the center of the wheel-pulling device 100 is aligned with the rotating shaft for driving the wheel component, which is fitted into the center of the wheel component according to existing technology. According to conventional arrangements in the prior art, the end face of this rotating shaft usually has a process hole in the center to facilitate the alignment and insertion of the end of the lifting screw 3.

[0045] Then, the buckle plates 9 of the multiple fixing structures 7 are aligned with the corresponding pull lug assemblies 8 from the side of the multiple spokes facing away from the pull lug assembly 8, and the multiple buckle plates 9 are installed onto the corresponding pull lug assemblies 8 according to the assembly method described above, thereby forming a complete wheel-pulling device 100. It can be understood that at this time, the multiple spokes of the wheel component are respectively fitted into the multiple fixing frames 90 formed at the ends of the multiple arm plates 6, that is, the spokes of the wheel component are fixed by the mutual cooperation of the pull lug assembly 8 and the buckle plates 9, thereby fixing the wheel component and the fixing structure 7 to each other.

[0046] Next, the winch 5 is connected to an existing rotary drive mechanism, such as a winch, and the winch 5 is driven to rotate, thereby causing the lifting screw 4 to rotate relative to the rotating base 2. Due to the limitations of the aforementioned threaded structure, the rotation of the lifting screw 4 is converted into axial movement. According to this operating principle, the winch 5 drives the lifting screw 4 to move continuously toward the side where the center plate 1 and the flange 21 of the rotating base 2 abut against each other, that is, drives the lifting screw 4 to move axially toward the wheel component to be disassembled, until the end of the lifting screw 4 away from the winch 5 abuts against the end face of the existing rotating shaft fitted in the center of the wheel component. Preferably, it can be inserted into the existing process hole opened in the center of the end face of the rotating shaft, so that the abutment state between the lifting screw 4 and the rotating shaft is more precise and stable.

[0047] Then, following the same driving direction as before—that is, the direction in which the lifting screw 4 moves axially toward the rotating wheel assembly—the rotary drive mechanism continues to rotate the winch 5 and the lifting screw 4 relative to the rotating base 2. Since the lifting screw 4 is now abutting against the rotating shaft and cannot move forward further, as the lifting screw 4 continues to rotate, its external thread structure will continuously push against the internal thread structure of the rotating base 2's inner wall, driving the rotating base 2 to move axially. This axial movement is opposite to the previous axial movement of the lifting screw 4, that is, gradually moving away from the rotating shaft. In this way, the rotating base 2 will drive the center plate 2, arm plate 6, fixed structure 7, and the rotating wheel assembly fixed to the fixed structure 7 to move axially away from the rotating shaft, thereby pulling the rotating wheel assembly off the rotating shaft.

[0048] After pulling out the rotating wheel component, the wheel pulling device 100 and the rotating wheel component fixed thereon can be hoisted together to the subsequent processing position. Then, the buckle plate 9 can be removed from the pull lug assembly 8, and the rotating wheel component can be taken away.

[0049] Compared to existing wheel-pulling devices, the wheel-pulling device 100 provided in this application has all components that are simple mechanical structures. It does not require expensive and complex pushers such as hydraulic jacks, thus resulting in lower cost and less susceptibility to damage. Clearly, the embodiments of this application effectively solve the problems of high cost and susceptibility to failure of the pushers used in existing wheel-pulling devices.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A wheel-pulling device for disassembling wheel components of engineering machinery, characterized in that, The wheel-pulling device includes a center plate, a rotating base, a lifting screw, multiple arm plates, and multiple fixing structures. The rotating base is fixedly mounted on the center plate and has an internal thread structure. The lifting screw is rotatably inserted into and passes through the rotating base and has an external thread structure that meshes with the internal thread structure. The multiple arm plates are radially fixedly mounted on the center plate, and the multiple fixing structures are respectively mounted on the multiple arm plates for fixing to the wheel component to be disassembled. The lifting screw drives the rotating base to move by rotation, thereby driving the center plate, the arm plates, and the fixing structures to move, thus moving the wheel component to disassemble it.

2. The puller device as described in claim 1, characterized in that, The arm plate is provided with a lifting part for lifting the puller device and the rotating wheel component fixed on the puller device, and the lifting part is provided with a lifting hole.

3. The puller device as described in claim 1, characterized in that, The arm plate also has a locking groove, into which the outer edge of the center plate is embedded.

4. The puller device as described in claim 1, characterized in that, The wheel-pulling device further includes a central sleeve fixedly mounted on the central plate, the central sleeve being connected to the rotating base, and the lifting screw being inserted into the central sleeve and the rotating base; the arm plate is fixedly connected to the central sleeve.

5. The puller device as described in claim 1, characterized in that, The puller device also includes a winch fixedly installed at one end of the lifting screw.

6. The puller device as described in claim 5, characterized in that, The end of the lifting screw opposite to the end on which the winch is mounted extends from the rotating base and is used to abut against the shaft fitted in the center of the rotating wheel component when disassembling the rotating wheel component.

7. The puller device as described in claim 1, characterized in that, The fixing structure includes a pull lug assembly and a buckle plate. The pull lug assembly is fixedly installed at one end of the arm plate, and the buckle plate is detachably installed on the pull lug assembly for cooperating with the pull lug assembly to fix the spokes of the wheel component.

8. The puller device as described in claim 7, characterized in that, The pull lug assembly includes a pull plate and two pull lugs fixed on the pull plate. One end of the arm plate is fixed between the two pull lugs. The buckle plate is detachably mounted on the pull plate, so that a fixing frame for accommodating the spokes of the wheel component is formed between the pull plate and the buckle plate body.

9. The puller device as described in claim 8, characterized in that, The pull lug assembly also includes a reinforcing plate that is fixedly connected to both the pull plate and the pull lug.

10. The puller device as claimed in claim 1, characterized in that, The center plate has a base hole for mounting the rotating base and a weight-reducing hole for reducing weight. Both the base hole and the weight-reducing hole penetrate both sides of the center plate.

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