Ratchet wrench

Abstract

The utility model relates to power maintenance tool technical field especially is related to a ratchet wrench. The device includes wrench main part and adaptation mechanism, the wrench main part includes the handle and sets up the ratchet structure at the handle one end, the adaptation mechanism includes the bearing support, adaptation support and a plurality of sleeves, the bearing support is connected in the drive end of ratchet structure, the adaptation support rotatably installs in the bearing support, and has a plurality of its rotation axis circumferential distribution's extension arm. The ratchet wrench provided by the utility model when using, according to the specification selection corresponding sleeve of fastener, then drive adaptation support rotation, to make the sleeve of fastener specification adaptation protrude in the extension direction of the drive end of ratchet structure along the bearing support. Thus solve due to the fastener specification diversity in overhead power network, and the on-site difficult accurate prediction, lead to the problem of easily appearing the phenomenon of the size of the sleeve carried and fastener inadaptation.

Description

Technical Field

[0001] This utility model relates to the field of power maintenance tools, and in particular to a ratchet wrench. Background Technology

[0002] A ratchet wrench is a hand tool with a ratchet mechanism. It uses the mechanical principle of unidirectional rotation drive and reverse free rotation to achieve efficient tightening and loosening of fasteners such as bolts and nuts. Ratchet wrenches are especially suitable for scenarios with certain constraints on the range of motion, such as overhead power grids. They can effectively reduce the range of motion during the tightening and loosening of fasteners and reduce the risk of instability caused by large movements.

[0003] In practical applications, it has been found that ratchet wrenches need to be used with sockets of different sizes to fit fasteners of different specifications. Due to the variety of fastener specifications in overhead power grids and the difficulty in accurately predicting them on site, it is easy for the size of the socket carried to be incompatible with the fastener. This requires interrupting the work and taking out a suitable socket, which reduces the continuity of the work process and prolongs the time that the operator stays at high altitude. Utility Model Content

[0004] This utility model provides a ratchet wrench to solve the problem that the size of the socket wrench is often incompatible with the fasteners due to the variety of fastener specifications in overhead power grids and the difficulty in accurately predicting them on site.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A ratchet wrench:

[0007] The device includes a wrench body and an adapter mechanism. The wrench body includes a handle and a ratchet structure disposed at one end of the handle. The adapter mechanism includes a support base, an adapter bracket, and multiple sleeves. The support base is connected to the drive end of the ratchet structure. The adapter bracket is rotatably mounted on the support base and has multiple extension arms whose rotation axes are circumferentially distributed. The multiple sleeves are respectively connected to the multiple extension arms, and the inner hole sizes of the multiple sleeves are different to accommodate fasteners of different specifications.

[0008] Furthermore, the support bracket has a strip-shaped hole; the adapter bracket is rotatably inserted into the strip-shaped hole and can move along the strip-shaped hole; the adapter mechanism also includes a positioning socket; the positioning socket is connected to the support bracket and can be slidably fitted onto the sleeve to restrict the rotation of the adapter bracket.

[0009] Furthermore, the adapter mechanism also includes multiple mounting plugs; the multiple mounting plugs can be detachably inserted into the multiple sleeves for attaching and detaching slotted fasteners; the multiple mounting plugs can all be detachably inserted into the support to fix the mounting plugs in the non-use state.

[0010] Furthermore, the outer surfaces of the plurality of sleeves are provided with a first limiting surface; the inner wall of the positioning socket is provided with a second limiting surface; when the sleeve is inserted into the positioning socket, the first limiting surface and the second limiting surface are in contact to restrict the sleeve from rotating around its own axis.

[0011] Furthermore, the adapter mechanism also includes multiple anti-loss ropes; one end of each of the multiple anti-loss ropes is connected to a multiple of the assembly plugs, and the other end of each is connected to the bearing support.

[0012] Furthermore, each of the sleeves has a process hole on its surface; the anti-loss rope is connected to the assembly plug at the side of the assembly plug; the anti-loss rope can pass through the process hole and slide along the process hole to avoid interference when the assembly plug is inserted into the sleeve.

[0013] Furthermore, it includes two of the aforementioned adapter mechanisms; the wrench body includes two of the aforementioned ratchet structures; the two ratchet structures are respectively connected to both ends of the handle; the two adapter mechanisms are respectively connected to the drive ends of the two ratchet structures, and the inner hole sizes of the plurality of the sockets are different from each other, so as to expand the range of fastener specifications that can be adapted.

[0014] Furthermore, the drive ends of the two ratchet structures are symmetrically arranged with the axis of the grip as the center, so that the two adapter mechanisms face opposite directions, thereby avoiding interference during the operation of the adapter mechanisms.

[0015] Furthermore, the wrench body also includes a fall protection structure; the fall protection structure includes a swivel ring, a traction rope, and a fall protection hook; the swivel ring is fitted onto the handle and rotatably connected to the handle; one end of the traction rope is connected to the swivel ring, and the other end is connected to the fall protection hook; the fall protection hook is used to connect the ratchet wrench to the operator to prevent the ratchet wrench from falling from a height.

[0016] Furthermore, the grip includes a handlebar and two anti-slip grip sleeves; the swivel ring is rotatably fitted onto the handlebar and is located in the middle of the handlebar; both anti-slip grip sleeves are fitted onto the handlebar and are symmetrically arranged with the swivel ring as the center.

[0017] The beneficial effects of the ratchet wrench in this utility model are analyzed as follows:

[0018] The device includes a wrench body and an adapter mechanism; the wrench body includes a handle and a ratchet structure disposed at one end of the handle; the adapter mechanism includes a support base, an adapter bracket, and multiple sleeves; the support base is connected to the drive end of the ratchet structure; the adapter bracket is rotatably mounted on the support base and has multiple extension arms whose rotation axes are circumferentially distributed; the multiple sleeves are respectively connected to the multiple extension arms, and the inner hole sizes of the multiple sleeves are different to accommodate fasteners of different specifications.

[0019] When using the ratchet wrench provided by this utility model, a corresponding socket is selected according to the specifications of the fastener. Then, the adapter bracket is rotated so that the socket that matches the specifications of the fastener protrudes from the bearing support along the extension direction of the drive end of the ratchet structure. This solves the problem that the size of the socket carried is not compatible with the fastener due to the variety of fastener specifications in overhead power grids and the difficulty in accurately predicting them on site. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the ratchet wrench provided in this embodiment of the utility model;

[0022] Figure 2 A front view of the ratchet wrench provided in this embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the adapter mechanism provided in this embodiment of the utility model;

[0024] Figure 4 A front view of the adapter mechanism provided in this embodiment of the utility model;

[0025] Figure 5 An exploded three-dimensional structural diagram of the adapter mechanism provided in this embodiment of the utility model.

[0026] icon:

[0027] 100-Wrench body; 110-Grip; 111-Handle; 112-Anti-slip grip; 120-Ratchet structure; 130-Anti-fall structure; 131-Rotating ring; 132-Traction rope; 133-Anti-fall hook; 200-Adaptor mechanism; 210-Bearing support; 211-Strip hole; 220-Adaptor bracket; 230-Sleeve; 231-First limiting surface; 232-Process hole; 240-Positioning socket; 241-Second limiting surface; 250-Assembly plug; 260-Anti-loss rope. Detailed Implementation

[0028] Because the fasteners in overhead power grids come in various sizes and are difficult to predict accurately on-site, it is easy for the size of the sleeve carried to be incompatible with the fastener. This requires interrupting the work and taking out a suitable sleeve, which reduces the continuity of the work process and prolongs the time that the operator stays at high altitude.

[0029] In view of this, this solution provides a ratchet wrench, including a wrench body 100 and an adapter mechanism 200.

[0030] The following combination Figures 1-5 The structure and shape of the ratchet wrench provided in this embodiment will be described in detail below:

[0031] The wrench body 100 includes a handle 110 and a ratchet structure 120 disposed at one end of the handle 110; the adapter mechanism 200 includes a support 210, an adapter bracket 220 and a plurality of sleeves 230; the support 210 is connected to the drive end of the ratchet structure 120; the adapter bracket 220 is rotatably mounted on the support 210 and has a plurality of extension arms whose rotation axes are circumferentially distributed; the plurality of sleeves 230 are respectively connected to the plurality of extension arms, and the inner hole sizes of the plurality of sleeves 230 are different from each other to adapt to fasteners of different specifications.

[0032] In this embodiment, a corresponding sleeve 230 is selected according to the specifications of the fastener. Then, the adapter bracket 220 is rotated so that the sleeve 230 that matches the specifications of the fastener protrudes from the bearing support 210 along the extension direction of the drive end of the ratchet structure 120. Then, the sleeve 230 is fitted onto the drive end of the fastener. Then, the sleeve 230 is rotated by the handle 110 and the ratchet structure 120 to complete the installation and removal of the fastener.

[0033] In addition, when dealing with fasteners that are difficult to drive in parallel, after the socket 230 is fitted onto the drive end of the fastener, the bearing support 210 is rotated relative to the adapter bracket 220 by the handle 110 and the ratchet structure 120, so that the wrench body 100 drives the fastener to be inserted while forming a certain angle with the fastener, thereby improving the flexibility of the ratchet wrench during operation.

[0034] To prevent uncontrolled rotation of the adapter bracket 220 during fastener installation and removal:

[0035] like Figures 3-5 As shown, the support 210 has a strip hole 211; the adapter bracket 220 is rotatably inserted into the strip hole 211 and can move along the strip hole 211; the adapter mechanism 200 also includes a positioning socket 240; the positioning socket 240 is connected to the support 210 and can be slidably fitted into the sleeve 230 to restrict the rotation of the adapter bracket 220.

[0036] In this embodiment, after the corresponding fastener adapter sleeve 230 is selected, the adapter bracket 220 is rotated along the end of the strip hole 211 away from the positioning socket 240. The extension arm of the adapter bracket 220 drives the sleeve 230 to protrude from the bearing support 210 along the extension direction of the ratchet structure 120 driving end, and then drives the adapter bracket 220 to move along the strip hole 211 toward the positioning socket 240. The adapter bracket 220 drives the unused sleeve 230 to be inserted into the positioning socket 240, so as to restrict the rotation of the adapter bracket 220, thereby avoiding uncontrollable rotation of the adapter bracket 220 during the fastener disassembly and assembly process.

[0037] To expand the range of fastener types for assembly and disassembly:

[0038] like Figures 3-5 As shown, the adapter mechanism 200 also includes a plurality of mounting plugs 250; the plurality of mounting plugs 250 can be detachably inserted into a plurality of sleeves 230 for mounting and dismounting slotted fasteners; the plurality of mounting plugs 250 can all be detachably inserted into the support bracket 210 to fix the mounting plugs 250 in the non-use state.

[0039] In this embodiment, when it is necessary to disassemble or assemble slotted fasteners, the corresponding assembly plug 250 and sleeve 230 are selected according to the specifications of the slotted fasteners. Then, the adapter bracket 220 is rotated along the end of the slotted hole 211 away from the positioning socket 240. The extension arm of the adapter bracket 220 drives the sleeve 230 to protrude from the bearing support 210 along the extension direction of the drive end of the ratchet structure 120. Then, the adapter bracket 220 is moved along the slotted hole 211 toward the positioning socket 240 so that the unused sleeve 230 is inserted into the positioning socket 240. Then, the assembly plug 250 is inserted into the sleeve 230. At this time, the assembly plug 250 and the sleeve 230 together form the drive part for driving the slotted fasteners, thereby expanding the range of fastener types that can be disassembled or assembled.

[0040] To reduce the likelihood of deformation failure at the contact point between the adapter bracket 220 and the strip hole 211:

[0041] like Figure 5As shown, the outer surfaces of multiple sleeves 230 are provided with a first limiting surface 231; the inner wall of the positioning socket 240 is provided with a second limiting surface 241; when the sleeve 230 is inserted into the positioning socket 240, the first limiting surface 231 and the second limiting surface 241 are in contact to restrict the sleeve 230 from rotating around its own axis.

[0042] In this embodiment, when the sleeve 230 is inserted into the positioning socket 240, the first limiting surface 231 on the outer surface of the sleeve 230 fits against the second limiting surface 241 on the inner wall of the positioning socket 240 to restrict the sleeve 230 from rotating around its own axis. This allows the torsional stress generated during the installation and removal of fasteners by the sleeve 230 to be transmitted sequentially to the bearing support 210 through the adapter bracket 220, the unused sleeve 230, and the positioning socket 240. This reduces the stress transmitted from the contact position between the adapter bracket 220 and the strip hole 211 to the bearing support 210, thereby reducing the probability of deformation failure at the contact position between the adapter bracket 220 and the strip hole 211.

[0043] To reduce the chance of the assembly plug 250 being accidentally lost:

[0044] like Figures 3-5 As shown, the adapter mechanism 200 also includes multiple anti-loss ropes 260; one end of each of the multiple anti-loss ropes 260 is connected to a multiple assembly plug 250, and the other end of each is connected to a support 210.

[0045] In this embodiment, the assembly plug 250 is connected to the support bracket 210 by the anti-loss rope 260 to restrict the movement of the assembly plug 250 in the use area, thereby reducing the probability of the assembly plug 250 being lost accidentally, and thus reducing the safety threat to personnel caused by the assembly plug 250 falling accidentally from a height.

[0046] To prevent the anti-loss rope 260 from interfering with the insertion of the assembly plug 250 into the sleeve 230:

[0047] like Figures 3-5 As shown, process holes 232 are provided on the surface of multiple sleeves 230; the anti-loss rope 260 is connected to the assembly plug 250 at the side of the assembly plug 250; the anti-loss rope 260 can pass through the process hole 232 and slide along the process hole 232 to avoid interference when the assembly plug 250 is inserted into the sleeve 230.

[0048] In this embodiment, by providing a process hole 232 on the surface of the sleeve 230 and setting the connection position between the anti-loss rope 260 and the assembly plug 250 on the side of the assembly plug 250, when the assembly plug 250 is inserted into the sleeve 230, the assembly plug 250 drives the anti-loss rope 260 to pass through the process hole 232 and slide along the process hole 232, thereby avoiding interference of the anti-loss rope 260 when the assembly plug 250 is inserted into the sleeve 230.

[0049] To expand the range of compatible fastener specifications:

[0050] like Figures 1-2 As shown, it includes two adapter mechanisms 200; the wrench body 100 includes two ratchet structures 120; the two ratchet structures 120 are respectively connected to the two ends of the handle 110; the two adapter mechanisms 200 are respectively connected to the drive ends of the two ratchet structures 120, and the inner hole sizes of the multiple sleeves 230 are different to expand the range of fastener specifications that can be adapted.

[0051] To reduce the weight of ratchet wrenches while expanding the range of compatible fastener sizes:

[0052] like Figures 1-2 As shown, the fastener that one adapter 200 is fitted with has a larger specification than the fastener that the other adapter 200 is fitted with, so as to reduce the weight of the ratchet structure 120 by reducing the upper limit of the output driving stress of the ratchet structure 120 connected to the smaller specification adapter 200.

[0053] In this embodiment, by setting two ratchet structures 120 and two adapter mechanisms 200, and the inner hole sizes of multiple sleeves 230 in the two adapter mechanisms 200 are different from each other, the range of fastener specifications that can be adapted is expanded.

[0054] To avoid interference between the two adapter mechanisms 200 during operation:

[0055] like Figures 1-2 As shown, the drive ends of the two ratchet structures 120 are symmetrically arranged with the axis of the handle 110 as the center, so that the two adapter mechanisms 200 are oriented in opposite directions, thereby avoiding interference during the operation of the adapter mechanisms 200.

[0056] In this embodiment, by symmetrically arranging the drive ends of the two ratchet structures 120 with the axis of the handle 110 as the center, the two adapter mechanisms 200 are oriented in opposite directions. Thus, when one adapter mechanism 200 is working, the other adapter mechanism 200 protruding from the ratchet structure 120 is symmetrically arranged with the ratchet structure 120 as the center, thereby avoiding interference between the two adapter mechanisms 200 during operation.

[0057] To prevent the ratchet wrench from accidentally coming off:

[0058] like Figures 1-2As shown, the wrench body 100 also includes a fall protection structure 130; the fall protection structure 130 includes a swivel ring 131, a traction rope 132, and a fall protection hook 133; the swivel ring 131 is fitted onto the handle 110 and is rotatably connected to the handle 110; one end of the traction rope 132 is connected to the swivel ring 131, and the other end is connected to the fall protection hook 133; the fall protection hook 133 is used to connect the ratchet wrench to the operator to prevent the ratchet wrench from falling from a height.

[0059] In this embodiment, one end of the traction rope 132 is first connected to the operator via the fall arrest hook 133. At this time, the other end of the traction rope 132 is connected to the handle 110 via the swivel ring 131 to limit the range of movement of the ratchet handle, thereby preventing the ratchet wrench from falling from a height. By rotating the swivel ring 131 onto the handle 110, the direction of the adapter mechanism 200 can be adjusted, thereby avoiding interference from the traction rope 132 to the operation.

[0060] To prevent uncontrollable slippage between the operator's hand and the handle 110:

[0061] like Figures 1-2 As shown, the grip 110 includes a handlebar 111 and two anti-slip grip sleeves 112; a swivel ring 131 is rotatably fitted onto the handlebar 111 and is located in the middle of the handlebar 111; the two anti-slip grip sleeves 112 are both fitted onto the handlebar 111 and are symmetrically arranged with the swivel ring 131 as the center.

[0062] In this embodiment, by providing an anti-slip grip sleeve 112 fitted onto the handle 111, the friction between the grip 110 and the operator's hand is increased, thereby preventing uncontrollable slippage between the operator's hand and the grip 110. By setting the rotating ring 131 in the middle of the handle 111, and symmetrically arranging the two anti-slip grip sleeves 112 with the rotating ring 131 as the center, the usage requirements of the two adapter mechanisms 200 for close-range and long-range operation are adapted.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ratchet wrench, characterized in that: It includes a wrench body (100) and an adapter mechanism (200); The wrench body (100) includes a handle (110) and a ratchet structure (120) disposed at one end of the handle (110); The adapter mechanism (200) includes a support (210), an adapter bracket (220), and multiple sleeves (230); The bearing support (210) is connected to the drive end of the ratchet structure (120); The adapter bracket (220) is rotatably mounted on the bearing support (210) and has a plurality of extension arms circumferentially distributed along their rotation axes; Multiple sleeves (230) are respectively connected to multiple extension arms, and the inner hole dimensions of the multiple sleeves (230) are different to accommodate fasteners of different specifications.

2. The ratchet wrench according to claim 1, characterized in that: The bearing support (210) has a strip-shaped hole (211); The adapter bracket (220) is rotatably inserted into the strip hole (211) and is movable along the strip hole (211); The adapter (200) also includes a positioning socket (240); The positioning socket (240) is connected to the bearing support (210) and can be slidably fitted onto the sleeve (230) to restrict the rotation of the adapter bracket (220).

3. The ratchet wrench according to claim 2, characterized in that: The adapter (200) also includes a plurality of mounting plugs (250); The plurality of said assembly plugs (250) can be detachably inserted into the plurality of said sleeves (230) for attaching and detaching slotted fasteners; Each of the assembly plugs (250) can be detachably inserted into the support bracket (210) to secure the assembly plugs (250) in a non-use state.

4. The ratchet wrench according to claim 3, characterized in that: The outer surfaces of the plurality of sleeves (230) are provided with first limiting surfaces (231); The inner wall of the positioning socket (240) is provided with a second limiting surface (241); When the sleeve (230) is inserted into the positioning socket (240), the first limiting surface (231) and the second limiting surface (241) are in contact to restrict the sleeve (230) from rotating around its own axis.

5. The ratchet wrench according to claim 4, characterized in that: The adapter (200) also includes multiple anti-loss ropes (260); One end of each of the multiple anti-loss ropes (260) is connected to one of the multiple assembly plugs (250), and the other end of each is connected to the bearing support (210).

6. The ratchet wrench according to claim 5, characterized in that: Process holes (232) are provided on the surface of each of the multiple sleeves (230); The connection point between the anti-loss rope (260) and the assembly plug (250) is located on the side of the assembly plug (250); The anti-loss rope (260) can pass through the process hole (232) and slide along the process hole (232) to avoid interference when the assembly plug (250) is inserted into the sleeve (230).

7. The ratchet wrench according to claim 6, characterized in that: Includes two of the aforementioned adapter mechanisms (200); The wrench body (100) includes two ratchet structures (120); The two ratchet structures (120) are respectively connected to the two ends of the grip (110); The two adapters (200) are respectively connected to the drive ends of the two ratchet structures (120), and the inner hole sizes of the plurality of sleeves (230) are different to expand the range of fastener specifications that can be adapted.

8. The ratchet wrench according to claim 7, characterized in that: The drive ends of the two ratchet structures (120) are symmetrically arranged with the axis of the grip (110) as the center, so that the two adapters (200) are oriented in opposite directions, thereby avoiding interference during the operation of the adapters (200).

9. The ratchet wrench according to claim 8, characterized in that: The wrench body (100) also includes a fall protection structure (130); The fall arrestor structure (130) includes a swivel ring (131), a traction rope (132), and a fall arrestor hook (133); The swivel ring (131) is fitted onto the handle (110) and is rotatably connected to the handle (110); One end of the traction rope (132) is connected to the slewing ring (131), and the other end is connected to the anti-fall hook (133); The fall arrestor hook (133) is used to connect the ratchet wrench to the operator to prevent the ratchet wrench from falling from a height.

10. The ratchet wrench according to claim 9, characterized in that: The grip (110) includes a handlebar (111) and two non-slip grip sleeves (112); The slewing ring (131) is rotatably fitted onto the handle (111) and is located in the middle of the handle (111); Both of the anti-slip grips (112) are fitted onto the handlebar (111) and are symmetrically arranged with the swivel ring (131) as the center.

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