Shield bolt hole rubber cover dismounting tool

Abstract

The invention belongs to dismounting and mounting tools for subways, and provides a shield bolt hole rubber cover dismounting and mounting tool which comprises a handle and a driving part. The driving part comprises a fixed seat connected with the handle, a sleeve and a two-way rotating assembly; the sleeve is rotatably arranged on the fixed seat; the two-way rotating assembly comprises a first ratchet wheel, a second ratchet wheel, a first pawl and a second pawl, the directions of gear teeth of the first ratchet wheel and the second ratchet wheel are opposite, and the first pawl and the second pawl are both rotationally connected into the fixing base; a steering switch is arranged on the fixing base, and the operation position of the steering switch is located on the surface of the fixing base. When the first ratchet wheel is stopped by the first pawl, the second pawl is separated from the second ratchet wheel; and when the second ratchet wheel is stopped by the second pawl, the first pawl is separated from the first ratchet wheel. The device has a bidirectional switching function, is convenient to operate, and is particularly suitable for a narrow subway shield operation space.

Description

Technical Field

[0001] The present invention belongs to disassembly and assembly tools for subways, and particularly relates to a disassembly and assembly tool for the rubber cover of a shield bolt hole. Background Art

[0002] Currently, the disassembly and assembly work of the hoisting hole cover of a subway shield still mainly relies on traditional L-shaped hexagon wrenches. Such wrenches are usually used to tighten or loosen bolts and have the characteristics of simple structure and low cost. However, in the actual application of subway shield tunnel construction and maintenance, the limitations of such tools are gradually emerging. Especially in narrow working spaces, traditional L-shaped hexagon wrenches are difficult to meet the requirements of efficient, convenient, and safe operation. Summary of the Invention

[0003] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a disassembly and assembly tool for the rubber cover of a shield bolt hole. The disassembly and assembly tool has a two-way switch function and is convenient to operate, especially suitable for narrow subway shield working spaces.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A disassembly and assembly tool for the rubber cover of a shield bolt hole, comprising a handle and a driving part connected to one end of the handle;

[0006] The driving part includes a fixed seat connected to the handle, a sleeve, and a two-way rotation assembly; the sleeve is rotatably arranged on the fixed seat, and both ends of the sleeve can be adapted to the parts to be disassembled and assembled; the two-way rotation assembly includes a first ratchet wheel, a second ratchet wheel, a first pawl for stopping the first ratchet wheel, and a second pawl for stopping the second ratchet wheel. The tooth directions of the first ratchet wheel and the second ratchet wheel are opposite, the first ratchet wheel and the second ratchet wheel are distributed up and down along the axis of the sleeve and are connected to the sleeve, and the first pawl and the second pawl are both rotatably connected in the fixed seat; a steering switch for driving the first pawl and the second pawl to rotate synchronously is provided on the fixed seat, and the operating position of the steering switch is located on the surface of the fixed seat;

[0007] When the first pawl stops the first ratchet wheel, the second pawl is separated from the second ratchet wheel; when the second pawl stops the second ratchet wheel, the first pawl is separated from the first ratchet wheel.

[0008] In a preferred solution of the present invention, the fixed seat is provided with an opening groove, and the sleeve and the two-way rotation assembly are both arranged in the opening groove.

[0009] In a preferred embodiment of the present invention, a first rotating shaft and a second rotating shaft are provided on the fixed seat, the first pawl is arranged on the first rotating shaft, and the second pawl is arranged on the second rotating shaft.

[0010] Preferably, a linkage assembly is provided between the first rotating shaft and the second rotating shaft, and under the action of the linkage assembly, the first rotating shaft and the second rotating shaft can rotate synchronously; the steering switch drives the rotation of the first rotating shaft or the second rotating shaft.

[0011] Preferably, the linkage assembly includes a first gear, a second gear and a chain; the first gear is arranged on the first rotating shaft, the second gear is arranged on the second rotating shaft, and the chain is wound between the first gear and the second gear.

[0012] Preferably, a cavity extending along the axis is provided on the first rotating shaft or the second rotating shaft; the steering switch includes a control rod, an elastic element and a first limiting structure;

[0013] The control rod is slidably arranged in the cavity, and a second limiting structure for restricting the circumferential rotation of the control rod relative to the first rotating shaft or the second rotating shaft is provided between the control rod and the cavity;

[0014] The two ends of the control rod are respectively a control end and a limiting end; the first limiting structure includes a clamping block and a clamping seat, the clamping block is arranged on the limiting end and protrudes or extends radially, the clamping seat is arranged on the fixed seat, and a plurality of clamping grooves distributed along the circumferential direction are provided on the clamping seat, and each clamping groove is adapted to the clamping block;

[0015] The elastic force of the elastic element always urges the control rod to move towards the control end so that the clamping block is embedded in the clamping groove.

[0016] Preferably, the control end is provided with a first control part larger than the control rod, and a second control part extending radially is provided on the side surface of the first control part; the elastic force of the elastic element acts on one side of the first control part facing the control rod.

[0017] Preferably, both the clamping block and the clamping groove are provided with four, and are evenly distributed along the circumferential direction.

[0018] In a preferred embodiment of the present invention, the handle includes an inner rod section and a sleeve section, the inner rod section can slide in and out of the inner cavity of the sleeve section; at least one elastically telescopic convex column is provided on the surface of the inner rod section, and a plurality of concave holes distributed along the axial direction are provided on the sleeve section.

[0019] In a preferred embodiment of the present invention, one end of the sleeve is connected with an adapter rod, the cross-sectional profile of the adapter rod is hexagonal, and the adapter rod is adapted to the concave hole on the rubber cover of the subway shield bolt hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] For the disassembly and assembly tool of the rubber cover of the shield bolt hole of the present invention, the stop states of the first ratchet and the second ratchet are switched through the steering switch, so as to adjust the rotation and disassembly direction of the disassembly and assembly tool, which is beneficial to the disassembly and assembly construction in the limited subway shield operation space and is convenient to operate. At the same time, for different rotation and disassembly directions of the present invention, different ratchets play a role, making the rotation reliability of the disassembled and assembled parts stronger and facilitating the avoidance of slipping.

[0022] When it is necessary to rotate and tighten a certain disassembled and assembled part (such as a bolt) in the first direction, one end of the sleeve is adapted and positioned with the disassembled and assembled part, and when the first ratchet and the first ratchet pawl cooperate to make the first ratchet in a stopped state, the driving part is rotated in the first direction by using the handle, and the disassembled and assembled part can be driven to rotate and tighten in the first direction; in a limited space, due to the limited rotation angle, the driving part can be rotated in the second direction (the direction opposite to the first direction) and then continue to rotate in the first direction. Due to the cooperation relationship between the first ratchet and the first ratchet pawl, the driving part will not drive the disassembled and assembled part to rotate when rotating in the second direction, so that the position of the disassembly and assembly tool can be repeatedly adjusted in a narrow space, and the disassembled and assembled part can be gradually tightened. When it is necessary to rotate and loosen the disassembled and assembled part in the second direction, the first ratchet pawl and the second ratchet pawl are rotated synchronously through the steering switch, so that the first ratchet pawl is separated from the first ratchet and the second ratchet pawl is engaged with the second ratchet. At this time, the second ratchet is in a stopped state, and the driving part and the disassembled and assembled part can be driven to rotate in the second direction by using the handle to realize the loosening and disassembly of the disassembled and assembled part. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a three-dimensional view of the disassembly and assembly tool of the rubber cover of the shield bolt hole of the present invention.

[0025] Figure 2 is Figure 1 a three-dimensional view of the driving part in

[0026] Figure 3 an enlarged view of the steering switch.

[0027] Figure 4 It is a partial sectional view of the driving part.

[0028] Figure 5 It is a bottom view of the shield bolt hole rubber cover disassembly and assembly tool of the present invention.

[0029] Figure 6 is Figure 5 a schematic diagram of the first limiting structure in

[0030] Wherein:

[0031] 1 - handle, 2 - driving part, 3 - fixed seat, 4 - opening groove, 5 - sleeve, 6 - adapter rod, 7 - first ratchet, 8 - second ratchet, 9 - first pawl, 10 - second pawl, 11 - first rotating shaft, 12 - second rotating shaft, 13 - control rod, 14 - first gear, 15 - second gear, 16 - tooth chain, 17 - first control part, 18 - second control part, 19 - limiting boss, 20 - elastic element, 21 - notch, 22 - inner rod section, 23 - sleeved section, 24 - convex column, 25 - concave hole, 26 - clamping seat, 27 - clamping block, 28 - clamping groove. Specific Embodiments

[0032] In order to more clearly understand the above - mentioned objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0034] Embodiment 1

[0035] Refer to Figures 1 - 6, this embodiment discloses a tool for disassembling and assembling the rubber cover of a shield bolt hole, which includes a handle 1 and a driving part 2 connected to one end of the handle 1. The driving part 2 includes a fixed seat 3 connected to the handle 1, a sleeve 5, and a two-way rotation assembly; the sleeve 5 is rotatably arranged on the fixed seat 3, and both ends of the sleeve 5 can be adapted to the parts to be disassembled and assembled; the two-way rotation assembly includes a first ratchet 7, a second ratchet 8, a first pawl 9 for stopping the first ratchet 7, and a second pawl 10 for stopping the second ratchet 8. The tooth directions of the first ratchet 7 and the second ratchet 8 are opposite. The first ratchet 7 and the second ratchet 8 are distributed up and down along the axis of the sleeve 5 and are connected to the sleeve 5. The first pawl 9 and the second pawl 10 are both rotatably connected in the fixed seat 3; a steering switch for driving the first pawl 9 and the second pawl 10 to rotate synchronously is provided on the fixed seat 3, and the operating position of the steering switch is located on the surface of the fixed seat 3. When the first pawl 9 stops the first ratchet 7, the second pawl 10 is separated from the second ratchet 8; when the second pawl 10 stops the second ratchet 8, the first pawl 9 is separated from the first ratchet 7.

[0036] The fixed seat 3 of this embodiment is provided with an opening groove 4, and the sleeve 5 and the two-way rotation assembly are both arranged in the opening groove 4. See Figures 1 - 2 , the opening groove 4 of this embodiment is open on three sides.

[0037] The fixed seat 3 of this embodiment is provided with a first rotating shaft 11 and a second rotating shaft 12. The first pawl 9 is arranged on the first rotating shaft 11, and the second pawl 10 is arranged on the second rotating shaft 12. Through the arrangement of the first rotating shaft 11 and the second rotating shaft 12, it is convenient to fix the first pawl 9 and the second pawl 10, and at the same time realize the rotational connection with the fixed seat 3, so that the first pawl 9 and the second pawl 10 can rotate relative to the fixed seat 3. The first rotating shaft 11 and the second rotating shaft 12 of this embodiment are located in the opening groove 4 of the fixed seat 3 and are respectively rotatably connected to the inner walls of both ends of the opening groove 4. Specifically, bearings, bushings and other methods can be used to achieve this.

[0038] A linkage assembly is provided between the first rotating shaft 11 and the second rotating shaft 12. Under the action of the linkage assembly, the first rotating shaft 11 and the second rotating shaft 12 can rotate synchronously; the steering switch drives the first rotating shaft 11 or the second rotating shaft 12 to rotate. Specifically, the linkage assembly includes a first gear 14, a second gear 15 and a chain 16; the first gear 14 is arranged on the first rotating shaft 11, the second gear 15 is arranged on the second rotating shaft 12, and the chain 16 is wound between the first gear 14 and the second gear 15. When one of the rotating shafts rotates, under the action of the first gear 14, the second gear 15 and the chain 16, the other rotating shaft is synchronously driven to rotate, so as to realize the synchronous rotation of the first pawl 9 and the second pawl 10 and complete the stop switching of the first ratchet 7 and the second ratchet 8.

[0039] In addition, the linkage component between the first rotation and the second rotation can adopt other implementation manners, such as a linkage mechanism or other synchronous transmission mechanisms, as long as it can achieve the synchronous rotation of the first rotating shaft 11 and the second rotating shaft 12. For example, the above-mentioned gear transmission can be replaced by a belt transmission method.

[0040] Furthermore, the first rotating shaft 11 of this embodiment is provided with a cavity extending along the axis; the steering switch includes a control rod 13, an elastic element 20, and a first limiting structure. The control rod 13 is slidably arranged in the cavity, and a second limiting structure for restricting the circumferential rotation of the control rod 13 relative to the first rotating shaft 11 is provided between the control rod 13 and the cavity. The two ends of the control rod 13 are respectively a control end and a limiting end; the first limiting structure includes a clamping block 27 and a clamping seat 26. The clamping block 27 is arranged on the limiting end and protrudes or extends radially. The clamping seat 26 is arranged on the fixed seat 3, and a plurality of clamping grooves 28 distributed circumferentially are provided on the clamping seat 26, and each clamping groove 28 is adapted to the clamping block 27. The elastic force of the elastic element 20 always urges the control rod 13 to move towards the control end so that the clamping block 27 is embedded in the clamping groove 28. The second limiting structure of this embodiment can be a chute extending axially on the inner wall of the cavity and a slider protruding radially on the circumferential surface of the control rod 13. The slider is embedded in the chute. Such a second limiting structure can effectively restrict the relative rotation between the control rod 13 and the first rotating shaft 11, and at the same time allow the control rod 13 to move axially relative to the first rotating shaft 11. Of course, the chute can also be arranged on the control rod 13. Correspondingly, the slider is arranged on the inner wall of the cavity, and the same effect can be achieved.

[0041] Furthermore, the control end is provided with a first control part 17 larger than the control rod 13, and a second control part 18 protruding radially is provided on the side surface of the first control part 17; the elastic force of the elastic element 20 acts on one side of the first control part 17 facing the control rod 13. Specifically, the elastic element 20 of this embodiment can be selected as a spring. There is an installation gap on the fixed seat 3. The elastic element 20 is sleeved on the control rod 13 and is located in the installation gap, and the other end of the elastic element 20 acts on the end surface of the first rotating shaft 11. Or, the elastic element 20 can also be located between the surface of the first control part 17 and the fixed seat 3. The main purpose of setting the elastic element 20 is to lift the control rod 13 to ensure that the clamping block 27 on the limiting end of the control rod 13 is located in the clamping groove 28, so as to ensure that the first rotating shaft 11 cannot rotate randomly and also ensure the positions of the first pawl 9 and the second pawl 10.

[0042] The steering switch of this embodiment can also be arranged to cooperate with the second rotating shaft 12, that is, a cavity extending along the axis can be provided on the second rotating shaft 12.

[0043] Furthermore, in order to better limit the control rod 13, the present embodiment has four positioning blocks 27 and positioning slots 28, which are evenly distributed along the circumference. Specifically, the positioning blocks 27 of the present embodiment are pin-shaped structures. Four evenly distributed positioning blocks 27 and positioning slots 28 are provided, so that the positioning blocks 27 need to rotate 90° with the control rod 13 to adapt to an adjacent positioning slot 28, that is, the control end needs to be rotated 90°, which is convenient for users to distinguish the rotation angle. Combined with the initial direction of the first pawl 9 and the second pawl 10, when the first rotating shaft 11 rotates 90° in the specified direction, the first pawl 9 and the second pawl 10 can realize the stop switching of the first ratchet 7 and the second ratchet 8.

[0044] Furthermore, in this embodiment, a limiting boss 19 is provided on the surface of the fixing seat 3 corresponding to the control end, and the limiting boss 19 is provided with a notch 21 opened in a 90° fan shape, and the notch 21 corresponds to the second control part 18. In this way, the rotation angle of the second operating part can be limited, so that the rotation angle of the first rotating shaft driven by the control lever 13 is more accurate.

[0045] See also Figures 1 - 6 At this time, the first pawl 9 cooperates with the first ratchet 7, the first ratchet 7 is in a stopped state, and the second ratchet 8 is separated from the second pawl 10. When it is necessary to switch the disassembly and assembly rotation direction of the disassembly and assembly tool, it is necessary to switch the stop state of the first ratchet 7 and the second ratchet 8; at this time, the operating end is pressed first, and the second operating portion is correspondingly embedded in the notch 21 of the limiting boss 19, and the control rod 13 moves axially relative to the first rotating shaft 11, and the blocking block 27 on the limiting portion escapes from the blocking groove 28 and is no longer subject to rotation restriction; at this time, the operating end is rotated 90°, driving the first rotating shaft 11 and the second rotating shaft 12 to rotate, causing the first pawl 9 to separate from the first ratchet 7, the second pawl 10 to cooperate with the second ratchet 8, and the second ratchet 8 is stopped, and then the first operating portion 17 and the second operating portion 18 are released, and under the elastic force of the elastic element 20, the control rod 13 slides axially toward the control end again, and the blocking block 27 on the limiting portion is re-embedded in the blocking groove 28, and the rotation of the control rod 13 is restricted, completing the stop switching of the first ratchet 7 and the second ratchet 8, and the disassembly and assembly rotation direction of the disassembly and assembly tool of this embodiment is also switched.

[0046] The handle 1 of this embodiment includes an inner rod section 22 and a sleeve section 23. The inner rod section 22 can slide in and out of the inner cavity of the sleeve section 23. The surface of the inner rod section 22 is provided with at least one elastically retractable convex column 24, and the sleeve section 23 is provided with a plurality of concave holes 25 distributed along the axial direction. This embodiment realizes the retractability of the handle 1 through the arrangement of the inner rod section 22 and the sleeve section 23, so that the length of the handle 1 can be adjusted according to the actual construction environment, thereby improving convenience. The matching positioning structure of the elastically retractable convex column 24 and the concave hole 25 of this example can refer to the prior art, such as the telescopic rod on a telescopic umbrella.

[0047] One end of the sleeve 5 in this embodiment is connected with an adapter rod 6. The cross-sectional contour of the adapter rod 6 is hexagonal, and the adapter rod 6 is adapted to the concave hole 25 on the rubber cover of the subway shield bolt hole. The adaptation of the adapter rod 6 to the concave hole 25 on the rubber cover of the subway shield bolt hole improves the specificity of the disassembly and assembly tool in this embodiment. Of course, structures adapted to different disassembly and assembly parts can be provided at both ends of the sleeve 5 in this embodiment. For example, it can also be set as an internal hexagonal concave hole for disassembling and assembling parts with a hexagonal shape and a protrusion.

[0048] Embodiment 2

[0049] The difference between this embodiment and Embodiment 1 lies in that: both the first pawl 9 and the second pawl 10 in this embodiment are arranged on a rotating shaft, and the rotating shaft is rotatably connected to the fixed seat 3. The steering switch is matched with the rotating shaft. In this way, by arranging both the first pawl 9 and the second pawl 10 on the same rotating shaft and using the steering switch to control the rotation angle of the rotating shaft, the directions of both the first pawl 9 and the second pawl 10 can be changed simultaneously, so as to change their cooperation relationship with the first ratchet wheel 7 and the second ratchet wheel 8, and realize the switching of the stopping states of the first ratchet wheel 7 and the second ratchet wheel 8. The advantage of such a design is that there is no need to additionally set up linkage components, and the synchronous rotation of the first pawl 9 and the second pawl 10 can be achieved by using one rotating shaft, and the structure is simpler and more reliable.

[0050] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modifications, equivalent changes and decorations made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A shield bolt hole rubber cover disassembly and assembly tool, characterized in that: It comprises a handle and a driving part connected to one end of the handle; The driving part comprises a fixing seat connected to the handle, a sleeve and a two-way rotary assembly; the sleeve is rotatably arranged on the fixing seat, and both ends of the sleeve can be adapted to the parts to be disassembled and assembled; the two-way rotary assembly comprises a first ratchet, a second ratchet, a first pawl for stopping the first ratchet and a second pawl for stopping the second ratchet, the teeth of the first ratchet and the second ratchet are in opposite directions, the first ratchet and the second ratchet are distributed up and down along the axis of the sleeve and are connected to the sleeve, and the first pawl and the second pawl are both rotatably connected to the fixing seat; a steering switch for driving the first pawl and the second pawl to rotate synchronously is provided on the fixing seat, and the operating position of the steering switch is located on the surface of the fixing seat; When the first pawl stops the first ratchet, the second pawl is separated from the second ratchet; when the second pawl stops the second ratchet, the first pawl is separated from the first ratchet.

2. The shield bolt hole rubber cover disassembly and assembly tool according to claim 1, characterized in that: The fixing seat is provided with an open slot, and the sleeve and the two-way rotary assembly are both arranged in the open slot.

3. The shield bolt hole rubber cover disassembly and assembly tool according to claim 1, characterized in that: The fixing seat is provided with a first rotating shaft and a second rotating shaft, the first pawl is arranged on the first rotating shaft, and the second pawl is arranged on the second rotating shaft.

4. The shield bolt hole rubber cover disassembly and assembly tool according to claim 3, characterized in that: A linkage assembly is provided between the first rotating shaft and the second rotating shaft, and the first rotating shaft and the second rotating shaft can rotate synchronously under the action of the linkage assembly; the steering switch drives the first rotating shaft or the second rotating shaft to rotate.

5. The shield bolt hole rubber cover disassembly and assembly tool according to claim 4, characterized in that: The linkage assembly includes a first gear, a second gear and a toothed chain; the first gear is arranged on the first rotating shaft, the second gear is arranged on the second rotating shaft, and the toothed chain is surrounded between the first gear and the second gear.

6. The shield bolt hole rubber cover disassembly and assembly tool according to claim 4 or 5, characterized in that: The first rotating shaft or the second rotating shaft is provided with a cavity extending along the axis; the steering switch comprises a control rod, an elastic element and a first limiting structure; The control rod is slidably disposed in the cavity, and a second limiting structure for limiting the rotation of the control rod relative to the first rotating shaft or the second rotating shaft is provided between the control rod and the cavity; The two ends of the control rod are respectively a control end and a limit end; the first limit structure includes a clamping block and a clamping seat, the clamping block is arranged on the limit end and protrudes or extends radially, the clamping seat is arranged on the fixed seat, and the clamping seat is provided with a plurality of clamping grooves distributed along the circumferential direction, and each of the clamping grooves is adapted to the clamping block; The elastic force of the elastic element always forces the control rod to move toward the control end so that the locking block is embedded in the locking groove.

7. The shield bolt hole rubber cover disassembly and assembly tool according to claim 6, characterized in that: The control end is provided with a first control part which is larger than the control rod, and a second control part which extends radially is provided on a side of the first control part; the elastic force of the elastic element acts on a side of the first control part which faces the control rod.

8. The shield bolt hole rubber cover disassembly and assembly tool according to claim 6, characterized in that: The number of the blocking blocks and the number of the blocking grooves are both four and are evenly distributed along the circumferential direction.

9. The shield bolt hole rubber cover disassembly and assembly tool according to claim 1, characterized in that: The handle comprises an inner rod section and a sleeve section, wherein the inner rod section can slide in and out of the inner cavity of the sleeve section; at least one elastically retractable convex column is arranged on the surface of the inner rod section, and the sleeve section is provided with a plurality of concave holes distributed along the axial direction.

10. The shield bolt hole rubber cover disassembly and assembly tool according to claim 1, characterized in that: One end of the sleeve is connected with an adapter rod, the cross-sectional profile of the adapter rod is hexagonal, and the adapter rod is adapted to the concave hole on the rubber cover of the subway shield bolt hole.

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