Universal wrench for disassembling and assembling locking nut

Abstract

The utility model belongs to the technical field of mechanical maintenance equipment, and discloses a universal wrench for dismounting and mounting a locking nut, which comprises a spacer bush and an abutting claw, a handle is arranged on the spacer bush, a rotating wheel part is rotatably arranged on the inner side of the spacer bush, a clamping part jointed with the rotating wheel part is arranged on the spacer bush, and the abutting claw is arranged on the clamping part. When the spacer bush rotates in the forward circumferential direction or the reverse circumferential direction along the outer side of the rotating wheel piece, the clamping piece and the rotating wheel piece are in a meshing fixing state or a releasing state, a mounting shell extending to the outer side of the spacer bush is arranged on one side of the rotating wheel piece, and regulation and control pieces connected with the abutting claws are symmetrically arranged on the outer side of the mounting shell. Through the combined design of the spacer bush, the handle, the rotating wheel piece, the clamping piece, the mounting shell and the like, the locking nut can be disassembled and fastened only by rotating the handle in a reciprocating mode during disassembly operation, so that the operation becomes simple and rapid, an operator does not need to use a knocking mode any more, the risk of nut damage is reduced, and the working efficiency is improved. And the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical maintenance equipment, in particular to a universal wrench for disassembling and assembling locking nuts. Background Art

[0002] The lock nut is a key component in the rotor fixing structure of a vacuum pump. Its main function is to ensure the stability of the rotor during high-speed operation and prevent longitudinal movement. However, the existing lock nut structure has some problems during the disassembly and assembly process.

[0003] First, due to the lack of professional wrenches, operators often need to use knocking to remove the locking nuts, which not only easily causes damage to the nuts, such as surface damage, but also may cause burrs inside the pump body. These burrs fall off during the operation of the pump, which may cause oil pollution and increase equipment wear, thereby affecting the normal operation and service life of the pump. Secondly, frequent knocking and disassembly will shorten the service life of the locking nuts and increase the replacement frequency, which not only increases the cost of use, but also increases the maintenance workload.

[0004] In addition, during our company's actual participation in the fault repair of ZJL400 / 600 Roots vacuum pumps, we also found that there are two different structures of locking nuts: "locking nuts with four slots" and "locking nuts with double planes". According to the conventional disassembly method, multiple tools are required to complete the disassembly operation, which is not convenient.

[0005] Therefore, in order to solve the above problems, a universal wrench for disassembling and assembling a locking nut is provided to solve the above problems. Utility Model Content

[0006] (1) Technical problems solved

[0007] In order to solve the problems raised in the above background technology, the utility model provides a universal wrench for disassembling and assembling a locking nut.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a universal wrench for disassembling and assembling a locking nut, comprising a spacer and a tightening claw, the spacer being provided with a handle, a rotary wheel being rotatably provided on the inner side of the spacer, a clamping piece being provided on the spacer and engaging with the rotary wheel, and when the spacer rotates in a positive circumferential direction / reverse circumferential rotation along the outer side of the rotary wheel, the clamping piece and the rotary wheel are in an engaged and fixed state / released state, a mounting shell extending to the outer side of the spacer is provided on one side of the rotary wheel, an adjustment control connected to the tightening claw is symmetrically provided on the outer side of the mounting shell, and the adjustment control drives the tightening claw to move in a direction perpendicular to the axis of the mounting shell;

[0010] The abutting claw includes a first abutment block, one end of which is connected to the adjustment control, the other end of which is located outside the mounting shell, and a second abutment block is provided outside the other end of the first abutment block.

[0011] Preferably, the rotating wheel member includes a retaining spring and a ratchet, the spacer sleeve includes an inner cavity for installing the ratchet, the size and shape of the inner cavity match the outer diameter of the ratchet, a retaining groove is provided on the outer side of the ratchet, and a receiving groove is provided on the inner cavity of the spacer sleeve, and the retaining spring is sleeved outside the retaining groove and located inside the receiving groove.

[0012] Preferably, the clamping part includes a first pawl, a spring and a sealing plate, a vertical shaft is provided in the spring, and both ends of the vertical shaft are respectively fixed with a sealing plate and a first pawl, and the two ends of the spring are respectively connected to the first pawl and the sealing plate, the other end of the first pawl is engaged with the ratchet, and the sealing plate is fixed on the spacer.

[0013] Preferably, the spacer includes a hollow vertical cylinder connected to the inner cavity, the first pawl, the vertical shaft and the spring are all arranged in the vertical cylinder, and the sealing plate is fixedly connected to the end of the vertical cylinder.

[0014] Preferably, the clamping member includes a second pawl, a receiving cavity is provided in the spacer, a second pawl engaged with the ratchet is provided in the receiving cavity, and a torsion spring is provided between the second pawl and the inner wall of the receiving cavity.

[0015] Preferably, the adjustment control unit includes an adjusting bolt and a cover plate, the mounting shell is provided with a receiving groove and a cover plate covering the receiving groove, the middle part of the cover plate is rotatably provided with an adjusting bolt with one end passing through the receiving groove, and one end of the first stop block is threadedly connected to the adjusting bolt.

[0016] Preferably, an adjusting button is provided at the other end of the adjusting bolt, the side of the accommodating groove away from the spacer is set as an opening, the first stop block is a convex block, the protruding end of the convex block is threadedly connected to the adjusting bolt, the horizontal end of the convex block is located outside the opening, and a second stop block is provided outside the horizontal end of the convex block.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The utility model adopts the combined design of the adjustment control, the first block and the second block, which can be flexibly selected to realize the clamping and tightening operation according to the requirements of different locking nut structures, reducing the need to prepare multiple tools due to different locking nut structures, simplifying the maintenance process, and reducing tool costs. Furthermore, through the combined design of components such as the spacer, handle, rotating wheel, clamping part and mounting shell, the locking nut can be disassembled and tightened by simply rotating the handle back and forth during the disassembly operation, making the disassembly and tightening process simple and quick, and the operator no longer needs to use a knocking method, reducing the risk of nut damage and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 This is an exploded view of the utility model;

[0022] Figure 3 This is a top view of the utility model;

[0023] Figure 4 This is the effect diagram of the clamping plane locking nut of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the second pawl and the torsion spring of the utility model.

[0025] In the figure: 1. spacer; 2. handle; 3. rotating wheel; 31. retaining spring; 32. ratchet; 33. slot; 34. receiving slot; 4. snap-fit ​​part; 41. first pawl; 42. spring; 43. sealing plate; 44. vertical shaft; 45. vertical cylinder; 46. second pawl; 47. torsion spring; 5. mounting shell; 6. clamping claw; 61. first stop block; 62. second stop block; 7. adjustment control; 71. adjusting bolt; 72. cover plate; 73. receiving slot; 74. adjusting button; 8. inner cavity; 9. receiving cavity. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 3 and Figure 5As shown, the utility model provides a universal wrench for disassembling and assembling a locking nut, comprising a spacer 1 and a tightening claw 6, a handle 2 being provided on the spacer 1, a rotating wheel 3 being rotatably provided on the inner side of the spacer 1, a clamping member 4 being engaged with the rotating wheel 3 being provided on the spacer 1, and when the spacer 1 rotates circumferentially in the positive / reverse direction along the outer side of the rotating wheel 3, the clamping member 4 and the rotating wheel 3 are in an engaged / released state, a mounting shell 5 extending to the outer side of the spacer 1 is provided on one side of the rotating wheel 3, and an adjustment control 7 connected to the tightening claw 6 is symmetrically provided on the outer side of the mounting shell 5, and the adjustment control 7 drives the tightening claw 6 to move in a direction perpendicular to the axis of the mounting shell 5;

[0028] The clamping claw 6 includes a first block 61 , one end of which is connected to the adjustment control, the other end of which is located outside the mounting shell 5 , and a second block 62 is provided outside the other end of the first block 61 .

[0029] Among them, regarding the structural design between the handle 2, the rotating wheel 3 and the clamping part 4:

[0030] The extended setting of the handle 2 makes the operation more convenient for the operator and reduces the difficulty of operation. In addition, the engagement and release of the rotating wheel 3 and the clamping member 4 enable the spacer 1 to stably realize unidirectional rotation.

[0031] As for the structural design of the pressing claw 6 and the adjustment control 7:

[0032] When the locking claw 6 is pressed against the locking nut, the locking nut can be removed or tightened by reciprocating the handle 2 in the forward and reverse directions.

[0033] The first and second retaining blocks 61 and 62 are designed to fit the slots and surfaces of different locking nuts for tightening operations, so that the device can adapt to different installation and fixing requirements.

[0034] Preferably, the rotating wheel member 3 includes a retaining spring 31 and a ratchet 32, and the spacer sleeve 1 includes an inner cavity 7 for installing the ratchet 32, the size and shape of the inner cavity 7 match the outer diameter of the ratchet 32, a retaining groove 33 is provided on the outside of the ratchet 32, and a receiving groove 34 is provided on the inner cavity 7 of the spacer sleeve 1, and the retaining spring 31 is sleeved outside the retaining groove 33 and located in the receiving groove 34.

[0035] The inner cavity 7 of the spacer 1 provides space for installing the ratchet 32, and provides space for installing the retaining spring 31 through the receiving groove 34 and the retaining groove 33 outside the ratchet 32. The inner cavity 7 of the spacer 1 matches the outer diameter of the ratchet 32 ​​to ensure the stable installation of the ratchet. The retaining spring 31 provides elastic force, so that the ratchet 32 ​​can be maintained in its installed position and rotated within the spacer 1.

[0036] The combination of the retaining spring 31 and the ratchet 32 ​​has a more compact structure, which saves space. It also simplifies the installation and removal of the ratchet 32, reducing maintenance workload and time.

[0037] Preferably, the clamping member 4 includes a first pawl 41, a spring 42 and a sealing plate 43, a vertical shaft 44 is provided in the spring 42, and the two ends of the vertical shaft 44 are respectively fixed with a sealing plate 43 and a first pawl 41, and the two ends of the spring 42 are respectively connected to the first pawl 41 and the sealing plate 43, the other end of the first pawl 41 is engaged with the ratchet 32, and the sealing plate 43 is fixed on the spacer sleeve 1.

[0038] The spacer 1 includes a hollow vertical cylinder 45 that is connected to the inner cavity 7 . The first pawl 41 , the vertical shaft 44 and the spring 42 are all arranged in the vertical cylinder 45 . The sealing plate 43 is fixedly connected to the end of the vertical cylinder 45 .

[0039] Through the combination of the first pawl 41, the spring 42 and the sealing plate 43, the entire structure is compact and saves space. The meshing design of the first pawl 41 and the ratchet 32 ​​allows the spacer 1 to achieve unidirectional rotation, thereby improving the flexibility and efficiency of operation. The setting of the spring 42 and the sealing plate 43 also provides the necessary elastic force and locking function, ensuring that the spacer 1 can be safely fixed and released when needed.

[0040] In addition to the above-described ratchet motion scheme, another ratchet motion scheme is now provided, as follows:

[0041] like Figure 5 As shown, the clamping member 4 includes a second pawl 46 , a receiving cavity 8 is provided in the spacer 1 , a second pawl 46 engaged with the ratchet 32 ​​is provided in the receiving cavity 8 , and a torsion spring 47 is provided between the second pawl 46 and the inner wall of the receiving cavity 8 .

[0042] By using the torsion spring 47 instead, the necessary elastic force can be provided to the second pawl 46, ensuring that the ratchet 32 ​​can be reliably locked in the required position during operation, making the entire structure of the clamping member 4 more compact, saving space, and improving the integration of mechanical components.

[0043] Preferably, the adjustment control 7 includes an adjusting bolt 71 and a cover plate 72. The mounting shell 5 is provided with a receiving groove 73 and a cover plate 72 covering the receiving groove 73. The middle part of the cover plate 72 is rotatably provided with an adjusting bolt 71 with one end passing through the receiving groove 73. One end of the first stop block 61 is threadedly connected to the adjusting bolt 71.

[0044] An adjusting button 74 is provided at the other end of the adjusting bolt 71. The side of the receiving groove 73 away from the spacer 1 is open. The first stop 61 is a convex block. The protruding end of the convex block is threadedly connected to the adjusting bolt 71. The horizontal end of the convex block is located outside the opening. A second stop 62 is provided outside the horizontal end of the convex block.

[0045] like Figure 1 and Figure 4 As shown, there is a distance between the lower plane of the second block 62 and the lower plane of the first block 61, which is mainly designed to adapt to the different slots of different locking nuts to avoid the situation where they cannot be tightened due to being on the same plane.

[0046] The structural integration of the adjusting bolt 71, the receiving groove 73, the cover plate 72 and the adjusting button 74 provides the functions of adjustment and sealing, and the more intuitive adjustment method makes the operation more convenient.

[0047] The working principle and use process of this utility model:

[0048] When removing or tightening the locking nut, according to the slot characteristics of the locking nut, select the first block 61 or the second block 62 to correspond to the slot, operate the rotary adjustment button 74, and under the rotation of the adjusting bolt 71, drive the first block 61 and the second block 62 to approach the slot of the locking nut and tighten it to complete the tightening operation, and then rotate the handle back and forth in the forward and reverse directions, with the cooperation of the first pawl 41 or the second pawl 46 to reverse and transmit torque to the ratchet 32, the locking nut can be removed or tightened.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A universal wrench for disassembling and assembling a lock nut, characterized by: The utility model comprises a spacer (1) and a clamping claw (6), wherein the spacer (1) is provided with a handle (2), a rotating wheel (3) is rotatably provided inside the spacer (1), and a clamping part (4) engaged with the rotating wheel (3) is provided on the spacer (1). When the spacer (1) rotates in a positive circumferential direction or a negative circumferential direction along the outer side of the rotating wheel (3), the clamping part (4) and the rotating wheel (3) are in an engaged fixed state or a released state. A mounting shell (5) extending to the outer side of the spacer (1) is provided on one side of the rotating wheel (3), and an adjustment control (7) connected to the clamping claw (6) is symmetrically provided on the outer side of the mounting shell (5). The adjustment control (7) drives the clamping claw (6) to move in a direction perpendicular to the axis of the mounting shell (5); The abutting claw (6) comprises a first abutment block (61), one end of the first abutment block (61) is connected to the adjustment control, the other end of the first abutment block (61) is located outside the mounting shell (5), and a second abutment block (62) is provided outside the other end of the first abutment block (61).

2. The universal wrench for disassembling and assembling a lock nut according to claim 1, characterized in that: The rotating wheel member (3) includes a retaining spring (31) and a ratchet (32); the spacer (1) includes an inner cavity (8) for mounting the ratchet (32); the size and shape of the inner cavity (8) match the outer diameter of the ratchet (32); a retaining groove (33) is provided on the outer side of the ratchet (32); a receiving groove (34) is provided on the inner cavity wall of the spacer (1); the retaining spring (31) is sleeved outside the retaining groove (33) and located inside the receiving groove (34).

3. The universal wrench for disassembling and assembling a lock nut according to claim 2, characterized in that: The clamping member (4) comprises a first pawl (41), a spring (42) and a sealing plate (43); a vertical shaft (44) is provided in the spring (42); the two ends of the vertical shaft (44) are respectively fixed with a sealing plate (43) and sleeved with the first pawl (41); the two ends of the spring (42) are respectively connected to the first pawl (41) and the sealing plate (43); the other end of the first pawl (41) is engaged with the ratchet (32); and the sealing plate (43) is fixed on the spacer (1).

4. The universal wrench for disassembling and assembling a lock nut according to claim 3, characterized in that: The spacer (1) comprises a hollow vertical cylinder (45) connected to the inner cavity (8); the first ratchet (41), the vertical shaft (44) and the spring (42) are all arranged in the vertical cylinder (45); and the sealing plate (43) is fixedly connected to the end of the vertical cylinder (45).

5. The universal wrench for disassembling and assembling a lock nut according to claim 2, characterized in that: The clamping member (4) includes a second pawl (46), a receiving cavity (9) is provided in the spacer (1), a second pawl (46) engaged with the ratchet (32) is provided in the receiving cavity (9), and a torsion spring (47) is provided between the second pawl (46) and the inner wall of the receiving cavity (9).

6. A universal wrench for disassembling and assembling a lock nut according to any one of claims 1 to 5, characterized in that: The adjustment control (7) comprises an adjusting bolt (71) and a cover plate (72); the mounting shell (5) is provided with a receiving groove (73) and a cover plate (72) covering the receiving groove (73); an adjusting bolt (71) with one end penetrating into the receiving groove (73) is rotatably provided in the middle of the cover plate (72); one end of the first stop block (61) is threadedly connected to the adjusting bolt (71).

7. The universal wrench for disassembling and assembling a lock nut according to claim 6, characterized in that: The other end of the adjusting bolt (71) is provided with an adjusting button (74), the side of the accommodating groove (73) away from the spacer (1) is open, the first stop block (61) is a convex block, the protruding end of the convex block is threadedly connected to the adjusting bolt (71), the horizontal end of the convex block is located outside the opening, and the second stop block (62) is provided outside the horizontal end of the convex block.

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