CN111203829A - Tool for tightening operation - Google Patents

Tool for tightening operation Download PDF

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Publication number
CN111203829A
CN111203829A CN202010185796.8A CN202010185796A CN111203829A CN 111203829 A CN111203829 A CN 111203829A CN 202010185796 A CN202010185796 A CN 202010185796A CN 111203829 A CN111203829 A CN 111203829A
Authority
CN
China
Prior art keywords
tool
main body
tightening
angle adjusting
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010185796.8A
Other languages
Chinese (zh)
Inventor
杨芳
唐小亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Qingyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Qingyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Qingyuan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202010185796.8A priority Critical patent/CN111203829A/en
Publication of CN111203829A publication Critical patent/CN111203829A/en
Priority to PCT/CN2020/122314 priority patent/WO2021184751A1/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007Connections or joints between tool parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The application discloses instrument for screwing up operation includes: the tool comprises a tool main body, a power supply module, an angle adjusting module, a control module and a connecting piece; the connecting piece is arranged on the tool main body and is used for connecting the operating rod; the angle adjusting module is arranged on the tool main body, is connected with the connecting piece and is used for driving the tool main body to rotate; the power supply module is arranged on the tool main body and is respectively and electrically connected with the angle adjusting module and the control module; the control module is electrically connected with the angle adjusting module. The utility model aims at providing a screw up instrument for operation for the electric tightening machine is connected with the action bars usefulness, realizes the nimble regulation of electric tightening machine and uses, and adaptability is good.

Description

Tool for tightening operation
Technical Field
The application relates to the technical field of electric power operation tools, in particular to a tool for screwing operation.
Background
The bolt is a common part used for fastening and connecting two parts with through holes in an electric power system, and most of the bolts are located outdoors and are in severe environments such as wind blowing, erosion and the like all the year round; in order to avoid accidents caused by loosening of bolts, it is generally necessary to check and secondarily tighten the bolts in an electric power overhaul work, and an existing electric tightening device for the electric power work mainly includes an electric tightening machine and an operation lever connected to the electric tightening machine. The electric tightening machine is fixed to one end of an operation lever, and an operator holds the operation lever to perform a tightening operation. However, the conventional electric tightening machines are directly fixed on the operating rod, cannot be flexibly adjusted and used, and have low applicability.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a tightening tool for connecting a power tightening machine and an operation lever, which allows flexible adjustment and use of the power tightening machine, and which has good adaptability.
In order to achieve the above technical object, the present application provides a tool for tightening work, including: the tool comprises a tool main body, a power supply module, an angle adjusting module, a control module and a connecting piece;
the connecting piece is arranged on the tool main body and is used for connecting an operating rod;
the angle adjusting module is arranged on the tool main body, is connected with the connecting piece and is used for driving the tool main body to rotate;
the power supply module is arranged on the tool main body and is respectively and electrically connected with the angle adjusting module and the control module;
the control module is electrically connected with the angle adjusting module.
Further, the control module comprises a main controller and a sub-controller;
the main controller is arranged on the tool main body and is electrically connected with the angle adjusting module and the power supply module;
the sub-controller is electrically connected with the main controller, and an operation panel is arranged on the sub-controller.
Further, the tool body comprises a first fixed seat and a second fixed seat;
the second fixing seat is vertically installed on a first side wall of the second fixing seat, and an installation space for installing the electric tightening machine is formed between the second fixing seat and the first fixing seat.
Further, the first fixed seat comprises a first seat shell and a first sealing plate;
the second fixed seats are respectively and vertically arranged on the first side wall of the first seat shell;
a second side wall opposite to the first side wall on the first seat shell is provided with a first mounting opening;
the first sealing plate is detachably arranged on the first mounting opening;
the master controller is installed in the first seat shell.
Further, the second fixed seat comprises a second seat shell and a second sealing plate;
the second sealing plate is vertically connected with the first side wall of the first fixed seat;
the second seat shell is mounted on the first sealing plate;
the angle adjusting module is installed in the second seat shell.
Furthermore, a plurality of hollow holes are formed in the second seat shell.
Further, the angle adjusting module comprises a rotating motor and a speed reducer;
the rotating motor is mounted on the first sealing plate;
the speed reducer is installed on the first sealing plate, an input shaft of the speed reducer is connected with an output shaft of the rotating motor in a synchronous rotating mode, and the output shaft of the speed reducer extends out of the second seat shell and is connected with the connecting piece in a synchronous rotating mode.
Further, the connecting piece comprises a first connecting head and a second connecting head;
the first connecting head is Y-shaped, an avoiding groove for avoiding the first seat shell is formed in the first end of the first connecting head, and a shaft hole which is synchronously and rotatably connected with the output shaft of the speed reducer is formed in the side wall of the avoiding groove of the first connecting head;
the second connector is connected with the second end of the first connector.
Furthermore, a second end of the first connecting head is provided with a convex part;
the protruding portion is provided with an inner concave hole into which the second connector can be detachably inserted.
Furthermore, an installation groove is formed in one end part, matched with the operating rod, of the second connecting head;
and the second connecting head is also provided with a plurality of tooth blocks distributed around the circumference of the mounting groove.
According to the technical scheme, the tool can be connected with the operating rod through the connecting piece, and the angle adjusting module connected with the connecting piece on the tool can be used for driving the tool main body to rotate so as to realize angle adjustment of the tool main body; the electric tightening machine is arranged on the tool main body and then is connected with the operating rod, so that the angle adjusting module can be controlled by the control module to adjust the angle of the electric tightening machine, the electric tightening machine can be flexibly used, more operation conditions can be adapted, and the adaptability is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic view of the overall structure of a tool for tightening work provided in the present application;
FIG. 2 is an exploded view of a tightening tool provided herein;
in the figure: 11. a first fixed seat; 111. a first housing; 112. a first sealing plate; 12. a second fixed seat; 121. a second housing; 122. a second sealing plate; 1211. hollowing out holes; 2. an angle adjustment module; 21. a rotating electric machine; 22. a speed reducer; 3. a connecting member; 31. a first connector; 311. an avoidance groove; 312. a shaft hole; 32. a second connector; 321. mounting grooves; 322. a tooth block; 100. and (5) installing space.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses instrument for screwing up operation.
Referring to fig. 1 and 2, an embodiment of a tool for tightening operations provided in an embodiment of the present application includes:
a tool body, a power supply module (not shown), an angle adjusting module 2, a control module (not shown) and a connecting piece 3; the connecting piece 3 is arranged on the tool main body and is used for connecting the operating rod; the angle adjusting module 2 is arranged on the tool main body, is connected with the connecting piece 3 and is used for driving the tool main body to rotate; the power supply module is arranged on the tool main body and is respectively and electrically connected with the angle adjusting module 2 and the control module; the control module is electrically connected with the angle adjusting module 2.
Specifically, according to the technical scheme, the tool provided by the application can be connected with the operating rod through the connecting piece 3, and the angle adjusting module 2 connected with the connecting piece 3 on the tool can be used for driving the tool main body to rotate so as to realize angle adjustment of the tool main body; the electric tightening machine is arranged on the tool main body and then is connected with the operating rod, so that the angle adjusting module 2 can be controlled by the control module to adjust the angle of the electric tightening machine, the electric tightening machine can be flexibly used, more operation conditions can be adapted, and the adaptability is good. In the present application, the electric screw machine may be a conventional screw machine, and those skilled in the art may make appropriate selection and change according to the need, and in addition, the electric screw machine may be detachably mounted on the tool body by a fastener such as a bolt, and the like, and the details are not limited.
The above is a first embodiment of a tool for tightening operations according to an embodiment of the present application, and the following is a second embodiment of a tool for tightening operations according to an embodiment of the present application, specifically referring to fig. 1 to 2.
A tool for tightening work, comprising: the tool comprises a tool main body, a power supply module, an angle adjusting module 2, a control module and a connecting piece 3; the connecting piece 3 is arranged on the tool main body and is used for connecting the operating rod; the angle adjusting module 2 is arranged on the tool main body, is connected with the connecting piece 3 and is used for driving the tool main body to rotate; the power supply module is arranged on the tool main body and is respectively and electrically connected with the angle adjusting module 2 and the control module; the control module is electrically connected with the angle adjusting module 2.
Further, the control module comprises a main controller and a sub-controller; the main controller is arranged on the tool main body and is electrically connected with the angle adjusting module 2 and the power supply module; the sub-controller is electrically connected with the main controller, and an operation panel is arranged on the sub-controller.
Specifically, the main controller is used for controlling the angle adjusting module 2, and the sub-controller is used for controlling the main controller remotely, so as to improve the convenience of control. For convenience of operation, the sub controller may be detachably mounted on the operation lever. More specifically, wireless communication can be carried out between sub accuse ware and the master controller through wireless modules such as wireless bluetooth communication module, wireless radio frequency communication module, reduces the arrangement of cable, improves the convenience of using. The main controller can comprise a main control panel and a wireless transmitting module, the sub-controllers can comprise a shell, sub-control panels, wireless receiving modules matched with the wireless transmitting modules and batteries for supplying power, and wireless communication connection between the main controller and the sub-controllers is achieved. During the use, can inhale the piece through magnetism such as magnet and paste sub-accuse ware admittedly on the action bars and be close to the grab handle position, make things convenient for the operation panel of operator operation control sub-accuse ware in order realizing the control to the master controller, send corresponding control instruction to the master controller to control angle adjusting module 2, main control board and sub-control board all can be conventional PLC control panel or microprocessor etc. do not do the restriction specifically.
Of course, this application also can be wired connection between sub-accuse ware and the master controller, can realize the communication connection between sub-accuse ware and the master controller through the connecting wire to and the electric connection between the power module. During the installation, the connecting wire can be followed the action bars length direction and hugged closely the action bars and distribute, can block the connecting wire admittedly through corresponding clamp, does not specifically do the restriction. Compared with a wireless connection mode, the priority connection mode can save certain cost, but wiring and subsequent maintenance are troublesome. The above embodiments are specific applications of the present application for the communication connection between the slave and the master, and certainly not limited to the above two cases, and those skilled in the art can make appropriate changes based on the above.
In addition, the design for facilitating detachable mounting of the sub-controller on the operation lever may be, for example, as follows: the magnet is embedded in the shell of the sub-controller, and the magnetic attraction piece matched with the magnet can be attached to the position, close to the grab handle, of the operating rod, so that the sub-controller can be conveniently installed and fixed. Of course, it is also possible to provide an insertion strip with a T-shaped cross section on the housing, provide a protrusion on the operating rod, and provide a slot on the protrusion for engaging with the insertion strip. Of course, the present invention is not limited to the above-described application means, and those skilled in the art can appropriately modify the present invention based on the above-described application means.
Further, as for the structure of the tool main body, it needs to perform a bearing fixing function, in this embodiment, the tool main body may include a first fixing seat 11 and a second fixing seat 12; the second fixing base 12 is vertically installed on a first sidewall of the second fixing base 12, and forms an installation space 100 for installing the electric screw machine with the first fixing base 11. The electric screw-down machine can be installed on the second fixing seat 12 and connected with the first fixing seat 11, and the installation is stable and not limited. The whole body is in an L-shaped structural layout, the structure is compact, and enough installation space 100 can be provided for the installation and use of the electric tightening machine.
Further, the first fixing seat 11 may specifically include a first seat shell 111 and a first sealing plate 112; the second fixing seats 12 are respectively vertically installed on the first side walls of the first seat shells 111; a first mounting opening is formed in a second side wall, opposite to the first side wall, of the first seat shell 111; the first sealing plate 112 is detachably mounted on the first mounting port; the master controller is mounted in the first housing 111. Specifically, as shown in fig. 2, the first fixing seat 11 formed by the first seat shell 111 and the first sealing plate 112 has a certain space inside, so that the main controller and the power module can be conveniently installed and fixed, and the main controller and the installed electric tightening module can be conveniently and electrically connected, so that the overall structure is more compact. In addition, a plurality of heat-dissipating strip-shaped holes may be formed at the position of the first sealing plate 112, so that heat dissipation is improved and the overall weight can be reduced.
Of course, the power module in the present application may also be mounted outside the first fixing seat 11 and the second fixing seat 12 through a structure such as a power bracket, and the like, which is not particularly limited.
Further, the second fixing seat 12 may specifically include a second seat shell 121 and a second sealing plate 122; the second sealing plate 122 is vertically connected with the first side wall of the first fixing seat 11; the second seat housing 121 is mounted on the first sealing plate 112; the angle adjusting module 2 is installed in the second seat case 121.
Specifically, the second fixing seat 12 may be configured to be similar to the first fixing seat 11, and the second seat shell 121 and the second sealing plate 122 form the second fixing seat 12 having an inner space, so that the angle adjusting module 2 is conveniently mounted and fixed; in this embodiment, the second seat shell 121 may be provided with a plurality of hollow holes 1211, which may reduce the overall mass and facilitate improving the heat dissipation of the angle adjustment module 2.
Further, the angle adjusting module 2 includes a rotating electrical machine 21 and a speed reducer 22; the rotating electric machine 21 is mounted on the first seal plate 112; the speed reducer 22 is mounted on the first seal plate 112, and an input shaft of the speed reducer 22 is connected to an output shaft of the rotating electric machine 21 in a synchronous rotation manner, and the output shaft of the speed reducer 22 extends out of the second housing 121 and is connected to the connecting member 3 in a synchronous rotation manner. The rotating motor 21 outputs via the speed reducer 22 to drive the tool body to rotate, so as to realize angle adjustment, and the rotating motor may be a brushless motor capable of rotating forward and backward, and is not limited specifically.
Further, the connector 3 includes a first connector 31 and a second connector 32; the first connecting joint 31 is Y-shaped, an avoiding groove 311 for avoiding the first seat shell 111 is arranged at the first end of the first connecting joint 31, and a shaft hole 312 which is synchronously and rotatably connected with the output shaft of the speed reducer 22 is formed in the side wall of the avoiding groove 311 of the first connecting joint 31; the second connector 32 is connected to a second end of the first connector 31.
Specifically, taking the first connection head 31 as an example of a Y-shaped structure, the output shaft and the input shaft of the speed reducer 22 may be distributed in a T-shape, so that the output shaft of the speed reducer 22 is conveniently structurally matched with the first connection head 31; as shown in fig. 2, in order to facilitate the disassembly and maintenance of the output shaft of the speed reducer 22 and the first connector 31, the shaft hole 312 extends upwards out of the first connector 31, so that the part of the first connector 31, which is matched with the output shaft of the speed reducer 22, forms a clamping part, and a bolt is arranged for fastening. The corresponding second connector 32 can be used for being connected and fixed with the operating rod, the second end of the first connector 31 can be provided with a protruding portion, the protruding portion is provided with an inner concave hole for the second connector 32 to be detachably inserted, wherein the first matching surface of the second connector 32 can be provided with a plurality of tooth blocks 322 distributed around the circumference of the mounting groove 321, the connecting structure connected and matched with the second connector 32 on the corresponding operating rod can be a connector structure with the same structure as the second connector 32, and therefore the second connector 32 can be conveniently matched with the operating rod. The connector with the structural design can realize multi-angle connection, and the connection is more convenient. Can realize being connected angle and adjustment instrument main part angle through adjusting action bars and connecting piece 3, realize the regulation of first order, utilize angle adjusting module 2 also can adjust instrument main part angle simultaneously, realize the regulation of second order, wholly use more nimble convenience, enlarge the operation range by a wide margin.
While the present invention has been described with reference to the preferred embodiments, it is to be understood that the present invention is not limited to the details of the embodiments and applications illustrated in the attached drawings.

Claims (10)

1. A tool for tightening work, comprising: the tool comprises a tool main body, a power supply module, an angle adjusting module, a control module and a connecting piece;
the connecting piece is arranged on the tool main body and is used for connecting an operating rod;
the angle adjusting module is arranged on the tool main body, is connected with the connecting piece and is used for driving the tool main body to rotate;
the power supply module is arranged on the tool main body and is respectively and electrically connected with the angle adjusting module and the control module;
the control module is electrically connected with the angle adjusting module.
2. The tool for tightening work according to claim 1, wherein the control module includes a master controller and a slave controller;
the main controller is arranged on the tool main body and is electrically connected with the angle adjusting module and the power supply module;
the sub-controller is electrically connected with the main controller, and an operation panel is arranged on the sub-controller.
3. The tool for tightening work according to claim 1, wherein the tool main body includes a first holder and a second holder;
the second fixing seat is vertically installed on a first side wall of the second fixing seat, and an installation space for installing the electric tightening machine is formed between the second fixing seat and the first fixing seat.
4. The tightening tool according to claim 3, wherein the first holder includes a first holder housing and a first seal plate;
the second fixed seats are respectively and vertically arranged on the first side wall of the first seat shell;
a second side wall opposite to the first side wall on the first seat shell is provided with a first mounting opening;
the first sealing plate is detachably arranged on the first mounting opening;
the master controller is installed in the first seat shell.
5. The tightening tool according to claim 3, wherein the second holder includes a second holder housing and a second seal plate;
the second sealing plate is vertically connected with the first side wall of the first fixed seat;
the second seat shell is mounted on the first sealing plate;
the angle adjusting module is installed in the second seat shell.
6. The tightening tool according to claim 5, wherein the second housing has a plurality of holes.
7. The tightening tool according to claim 5, wherein the angle adjustment module includes a rotary motor and a speed reducer;
the rotating motor is mounted on the first sealing plate;
the speed reducer is installed on the first sealing plate, an input shaft of the speed reducer is connected with an output shaft of the rotating motor in a synchronous rotating mode, and the output shaft of the speed reducer extends out of the second seat shell and is connected with the connecting piece in a synchronous rotating mode.
8. A tool for tightening operations according to claim 1, wherein the connecting member includes a first connecting head and a second connecting head;
the first connecting head is Y-shaped, an avoiding groove for avoiding the first seat shell is formed in the first end of the first connecting head, and a shaft hole which is synchronously and rotatably connected with the output shaft of the speed reducer is formed in the side wall of the avoiding groove of the first connecting head;
the second connector is connected with the second end of the first connector.
9. A tool for tightening according to claim 8, wherein the second end of the first connector is provided with a projection;
the protruding portion is provided with an inner concave hole into which the second connector can be detachably inserted.
10. The tool for tightening according to claim 9, wherein an installation groove is formed in an end portion of the second joint that engages with the operating rod;
and the second connecting head is also provided with a plurality of tooth blocks distributed around the circumference of the mounting groove.
CN202010185796.8A 2020-03-17 2020-03-17 Tool for tightening operation Pending CN111203829A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010185796.8A CN111203829A (en) 2020-03-17 2020-03-17 Tool for tightening operation
PCT/CN2020/122314 WO2021184751A1 (en) 2020-03-17 2020-10-21 Tool for tightening work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010185796.8A CN111203829A (en) 2020-03-17 2020-03-17 Tool for tightening operation

Publications (1)

Publication Number Publication Date
CN111203829A true CN111203829A (en) 2020-05-29

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ID=70784242

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010185796.8A Pending CN111203829A (en) 2020-03-17 2020-03-17 Tool for tightening operation

Country Status (2)

Country Link
CN (1) CN111203829A (en)
WO (1) WO2021184751A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021184751A1 (en) * 2020-03-17 2021-09-23 广东电网有限责任公司清远供电局 Tool for tightening work
CN114274063A (en) * 2021-11-25 2022-04-05 中之捷(常州)汽车零部件再制造有限公司 Handheld electric disassembling clamp

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DE102007059929A1 (en) * 2007-12-04 2009-06-10 C. & E. Fein Gmbh Wrench and method for controlling the tightening angle of fittings
JP7080814B2 (en) * 2015-12-11 2022-06-06 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Power wrench with angle drive
CN106985105B (en) * 2017-04-28 2018-11-02 国网青海省电力公司海西供电公司 A kind of electrical bolt tightener
CN207058444U (en) * 2017-07-31 2018-03-02 杭州矢卓科技有限公司 Power tool
CN108789253A (en) * 2018-08-10 2018-11-13 国网辽宁省电力有限公司本溪供电公司 A kind of high-voltage hot-line work spanner
CN109822493A (en) * 2019-04-10 2019-05-31 北渤智能科技秦皇岛有限公司 A kind of autowrench and its spanner fixture
CN111203829A (en) * 2020-03-17 2020-05-29 广东电网有限责任公司 Tool for tightening operation
CN111300322A (en) * 2020-03-17 2020-06-19 广东电网有限责任公司 Electric tightening tool
CN111168615B (en) * 2020-03-17 2024-05-28 广东电网有限责任公司 Electric tightening device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021184751A1 (en) * 2020-03-17 2021-09-23 广东电网有限责任公司清远供电局 Tool for tightening work
CN114274063A (en) * 2021-11-25 2022-04-05 中之捷(常州)汽车零部件再制造有限公司 Handheld electric disassembling clamp

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