CN111300325B - Auxiliary wrench - Google Patents
Auxiliary wrench Download PDFInfo
- Publication number
- CN111300325B CN111300325B CN202010308050.1A CN202010308050A CN111300325B CN 111300325 B CN111300325 B CN 111300325B CN 202010308050 A CN202010308050 A CN 202010308050A CN 111300325 B CN111300325 B CN 111300325B
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- sleeve
- handle
- bevel gear
- ball
- wrench
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
An assist wrench, comprising: the handle mechanism and the rotating mechanism are arranged in the handle mechanism; the handle mechanism comprises a power transmission part, a mode switching part, a pre-tightening force clamping part and a handle, wherein the power transmission part comprises a driving bevel gear and a transmission sleeve, and the driving bevel gear is fixedly connected with the transmission sleeve; the device can enable workers to better finish work by switching the pretightening force or not when the device is used; the pretightening force adjusting ring is rotated to adjust the direct spring distance between the ball pushing plate and the ball so as to control the friction force between the ball and the pretightening force groove and adjust the pretightening force; the pretightening force can be adjusted at any time, so that the tool can be suitable for working with different pretightening forces; be connected electric mechanism and mounting groove, and then realize electronic wrong screw or loose screw, realized the conversion that manual transformer moved, improved the practicality.
Description
Technical Field
The invention relates to the technical field of tools, in particular to an auxiliary wrench.
Background
The wrench is a daily life appliance, the conventional manual wrench usually needs to rotate a wrench rod to realize screwing, but the wrench does not support large-area rotation due to narrow space, so that the wrench without rotating the wrench rod is needed; because the existing electric wrench can not work after no electricity, a wrench which can work manually and can be driven by an electric driving mechanism to work as the electric wrench is needed.
Disclosure of Invention
Aiming at the problems, the invention provides an auxiliary wrench, which can realize the switching of the pretightening force of a mechanism by rotating a manual screwing switch, so that a worker can better complete the work by switching the pretightening force when using the auxiliary wrench; the pretightening force adjusting ring is rotated to adjust the direct spring distance between the ball pushing plate and the ball so as to control the friction force between the ball and the pretightening force groove and adjust the pretightening force; the pretightening force can be adjusted at any time, so that the tool can be suitable for working with different pretightening forces; be connected electric mechanism and mounting groove, and then realize electronic wrong screw or loose screw, realized the conversion that manual transformer moved, improved the practicality.
The technical scheme adopted by the invention is as follows: an assist wrench, comprising: the handle mechanism and the rotating mechanism are arranged in the handle mechanism;
the handle mechanism comprises a power transmission part, a mode switching part, a pre-tightening force clamping part and a handle, wherein the power transmission part comprises a driving bevel gear and a transmission sleeve, and the driving bevel gear is fixedly connected with the transmission sleeve; the transmission sleeve is connected with the pretightening force clamping part; the tightness of the screwed screw is further determined by setting the pre-tightening force through the pre-tightening force holding part;
the mode switching part comprises a clamping sleeve, the clamping sleeve is slidably arranged on the outer side of the transmission sleeve, and the clamping sleeve is matched with the groove of the transmission sleeve to realize synchronous rotation; the mode switching is realized by the clamping of the clamping sleeve and the positioning block at the inner side of the grip;
the rotating mechanism comprises a positioning bevel gear and a wrench socket, the positioning bevel gear is fixedly connected with the wrench socket, and the driving bevel gear is meshed with the positioning bevel gear.
Furthermore, the mode switching part comprises a friction shaft, a clamping sleeve, an inclined sleeve baffle A and a thrust bearing A, wherein the friction shaft is slidably mounted on the inner side of the transmission sleeve, the friction shaft is fixedly connected with the clamping sleeve through a groove in the transmission sleeve, a spring is arranged between the clamping sleeve and the transmission sleeve, and the spring enables the clamping sleeve to move towards the inclined sleeve baffle A; the inclined sleeve baffle A is rotatably arranged on the transmission sleeve, and a thrust bearing A is arranged between the inclined sleeve baffle A and the clamping sleeve.
Furthermore, the mode switching part also comprises a manual screwing switch, the manual screwing switch is rotatably installed on the handle, the inner side inclined surface of the manual screwing switch is in contact with the inclined surface of the inclined surface sleeve baffle A, and the distance between the inclined surface sleeve baffle A and the driving bevel gear is controlled by rotating the manual screwing switch so as to control the clamping sleeve and the friction shaft to switch modes.
Furthermore, the pretightening force clamping part comprises a pretightening force cylinder, a ball and a positioning shaft, and a pretightening force groove and a positioning round hole are arranged at the end A of the thrust bearing of the transmission sleeve; the pre-tightening force cylinder is rotatably installed in the handle, the positioning shaft is installed in the positioning circular hole, and the ball is installed in the pre-tightening force groove.
Further, the pretightning force adds holds the part and still includes inclined plane sleeve baffle B, footstep bearing B, ball pushing plate, the ball pushing plate passes through spring coupling with the ball, and the ball pushing plate is installed in the recess in the middle of the pretightning force cylinder, inclined plane sleeve baffle B rotates and installs on the pretightning force cylinder, is equipped with footstep bearing B in the middle of inclined plane sleeve baffle B and the ball pushing plate.
Furthermore, the pretightening force clamping part also comprises a pretightening force adjusting ring, the pretightening force adjusting ring is rotatably installed on the handle, the inner side of the pretightening force adjusting ring is provided with an inclined plane, the inclined plane on the inner side of the pretightening force adjusting ring is contacted with the inclined plane sleeve baffle A, and the pretightening force adjusting ring is rotated to adjust the spring distance between the ball pushing plate and the ball, so that the friction force between the ball and the pretightening force groove is controlled, and the pretightening force is adjusted.
Further, the handle mechanism 1 comprises a rotating handle, an installing head is arranged at the front end of the rotating handle, the installing head is installed with an installing groove of the pre-tightening force cylinder, and a round hole is formed in the upper surface of the rotating handle.
Further, the rotating mechanism comprises a driven bevel gear, the driven bevel gear is mounted on the outer ring of the bearing, and the inner ring of the bearing is mounted on the inner side of the wrench sleeve.
Furthermore, a friction arc surface is arranged on the outer side of the wrench sleeve.
The invention has the beneficial effects that:
(1) the invention realizes the switching of the mechanism with or without pretightening force by rotating the manual screwing switch, and can lead workers to better finish the work by switching the pretightening force when in use.
(2) According to the invention, the pre-tightening force adjusting ring is rotated to adjust the direct spring distance between the ball pushing plate and the ball so as to control the friction force between the ball and the pre-tightening force groove and adjust the pre-tightening force; the pretightening force can be adjusted at any time, so that the tool can be suitable for working with different pretightening forces.
(3) According to the invention, the electric mechanism is connected with the mounting groove, so that electric screwing or loosening of screws is realized, manual and electric transformation is realized, and the practicability is improved.
(4) The driven bevel gear is arranged, the driven bevel gear and the wrench socket rotate in opposite directions, the driven bevel gear plays a supporting role, supporting force is provided for the driving bevel gear, and damage caused by uneven stress of the driving bevel gear is prevented.
(5) The friction force is increased by the contact of the friction arc surface and the friction shaft, so that the groove part at the inner side of the insertion handle of the clamping sleeve is protected, and the protection effect is achieved.
Drawings
Fig. 1 and 2 are schematic overall structural diagrams of the present invention.
Fig. 3 is a schematic structural view of a cross-sectional view of the present invention.
Fig. 4, 5 and 6 are partial structural schematic views of the handle mechanism of the present invention.
FIG. 7 and FIG. 8 are schematic views of the pretightening force clamping part of the present invention
Fig. 9 is a schematic structural view of the rotating handle of the present invention.
Fig. 10 and 11 are schematic structural views of the rotating mechanism of the present invention.
Fig. 12 is a schematic structural view of a cross-sectional view of the rotating mechanism of the present invention.
FIG. 13 is a schematic view of the direction of rotation of the manual driver according to the present invention.
FIG. 14 is a schematic view of the direction of rotation of the electric drive of the present invention.
FIG. 15 is a schematic view of the non-preload manual driving rotation direction of the present invention.
Reference numerals: 1-handle mechanism, 2-rotating mechanism, 101-handle, 102-rotating mechanism shell, 103-manual screwing switch, 104-pretightening force adjusting ring, 105-transmission sleeve, 106-driving bevel gear, 107-friction shaft, 108-clamping sleeve, 109-inclined sleeve baffle A, 110-thrust bearing A, 111-pretightening force groove, 112-positioning round hole, 113-pretightening force cylinder, 114-ball, 115-positioning shaft, 116-inclined sleeve baffle B, 117-thrust bearing B, 118-ball pushing plate, 119-mounting groove, 120-rotating handle, 121-round hole, 122-mounting head, 201-cover plate, 202-positioning bevel gear, 203-thrust bearing C, 204-wrench sleeve, etc, 205-friction arc surface, 206-driven bevel gear and 207-bearing.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
In an embodiment, referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, and fig. 15, an auxiliary wrench is provided, which includes: the handle mechanism comprises a handle mechanism 1 and a rotating mechanism 2, wherein the rotating mechanism 2 is arranged in the handle mechanism 1;
the handle mechanism 1 comprises a power transmission part, a mode switching part, a pre-tightening force clamping part and a handle 101, wherein the power transmission part comprises a driving bevel gear 106 and a transmission sleeve 105, and the driving bevel gear 106 is fixedly connected with the transmission sleeve 105; the transmission sleeve 105 is connected with the pretightening force clamping part; the tightness of the screwed screw is further determined by setting the pre-tightening force through the pre-tightening force holding part; specifically, a rotating mechanism shell 102 is arranged at the front end of the handle 101, and the rotating mechanism 2 is rotatably arranged in the rotating mechanism shell 102;
the mode switching part comprises a blocking sleeve 108, the blocking sleeve 108 is slidably mounted on the outer side of the transmission sleeve 105, and the blocking sleeve 108 is matched with a groove of the transmission sleeve 105 to realize synchronous rotation; different screwing modes are realized by clamping the clamping sleeve 108 and the positioning block at the inner side of the grip 101; specifically, the first tightening method: as shown in fig. 13, the screw is tightened or loosened by inserting the iron pipe into the circular hole 121 and pulling the circular pipe; and (2) screwing mode II: tightening or loosening the screw is performed by manually tightening or loosening the rotating handle 120; the third method comprises the following steps: as shown in fig. 14, electric tightening or loosening is achieved by connecting an electric mechanism to the mounting recess 119; the method is as follows: as shown in fig. 15, the screw is tightened or loosened by pulling the grip 101 through the locking sleeve 108 locked with the positioning block inside the grip 101;
the rotating mechanism 2 comprises a positioning bevel gear 202 and a wrench socket 204, the positioning bevel gear 202 is fixedly connected with the wrench socket 204, and the driving bevel gear 106 is meshed with the positioning bevel gear 202.
In an alternative implementation manner of the embodiment of the present invention, as shown in fig. 5 and fig. 6, except for the same components as those in the previous embodiment, the mode switching portion includes a friction shaft 107, a locking sleeve 108, a bevel sleeve baffle a109 and a thrust bearing a110, the friction shaft 107 is slidably mounted inside the transmission sleeve 105, the friction shaft 107 is fixedly connected with the locking sleeve 108 through a groove on the transmission sleeve 105, and a spring is disposed between the locking sleeve 108 and the transmission sleeve 105, and the spring moves the locking sleeve 108 toward the bevel sleeve baffle a 109; the inclined sleeve baffle A109 is rotatably arranged on the transmission sleeve 105, and a thrust bearing A110 is arranged between the inclined sleeve baffle A109 and the clamping sleeve 108; specifically, when the screw is screwed or loosened, the locking sleeve 108 rotates along with the transmission sleeve 105, but the inclined sleeve baffle a109 is connected with the groove of the handle 101 in a sliding manner, so that the inclined sleeve baffle a109 does not rotate, and the manual screwing switch 103 is rotated to drive the inclined sleeve baffle a109 to move axially along the transmission sleeve 105;
the mode switching part also comprises a manual screwing switch 103, the manual screwing switch 103 is rotatably arranged on the handle 101, the inner inclined surface of the manual screwing switch 103 is contacted with the inclined surface of an inclined sleeve baffle A109, and the mode switching is carried out by rotating the manual screwing switch 103 to further control the distance between the inclined sleeve baffle A109 and a driving bevel gear 106 so as to control a clamping sleeve 108 and a friction shaft 107; specifically, the two modes are divided, when the clamping sleeve 108 and the friction shaft 107 are not clamped in the inner side clamping groove of the handle 101 and generate friction with the friction arc surface 205, the first state is a pre-tightening force state, the inclined surface sleeve baffle plate a109 is pushed by rotating the manual screwing switch 103 to push the thrust bearing a110 to finally push the friction shaft 107 and the friction arc surface 205 to generate friction force, and the clamping sleeve 108 and the inner side clamping groove of the handle 101 are clamped, the second state is a non-pre-tightening force state, at this time, the rotating mechanism 2 is fixed with the handle 101, and further, the screw can be screwed or unscrewed by rotating the handle 101 in fig. 15.
In an alternative embodiment of the present invention, as shown in fig. 7, the preload force holding portion includes a preload force cylinder 113, a ball 114, and a positioning shaft 115, and a preload force groove 111 and a positioning circular hole 112 are formed at the end of the thrust bearing a110 of the transmission sleeve 105; the pretightening force cylinder 113 is rotatably arranged in the handle 101, the positioning shaft 115 is arranged in the positioning round hole 112, and the ball 114 is arranged in the pretightening force groove 111;
the pretightening force clamping part also comprises an inclined sleeve baffle B116, a thrust bearing B117 and a ball pushing plate 118, the ball pushing plate 118 is connected with the ball 114 through a spring, the ball pushing plate 118 is arranged in a groove in the middle of the pretightening force cylinder 113, the inclined sleeve baffle B116 is rotatably arranged on the pretightening force cylinder 113, and the thrust bearing B117 is arranged between the inclined sleeve baffle B116 and the ball pushing plate 118;
the pretightening force clamping part further comprises a pretightening force adjusting ring 104, the pretightening force adjusting ring 104 is rotatably installed on the handle 101, an inclined surface is arranged on the inner side of the pretightening force adjusting ring 104, the inclined surface on the inner side of the pretightening force adjusting ring 104 is in contact with an inclined surface sleeve baffle A109, and the pretightening force adjusting ring 104 is rotated to adjust the direct spring distance between the ball pushing plate 118 and the ball 114 so as to control the friction force between the ball 114 and the pretightening force groove 111 and adjust the pretightening force; when the tightening force of the screw is greater than the set pre-tightening force, the ball 114 compresses the spring of the ball 114 and the ball pushing plate 118 under the action of the torsion force, and the pre-tightening force adjusting ring 104 and the pre-tightening force groove 111 slip to be incapable of being tightened continuously; when the manual tightening switch 103 is rotated to tighten or loosen the screw, the beveled sleeve stop B116 is slidably engaged with the groove of the grip 101 so that the beveled sleeve stop B116 does not rotate.
In an alternative embodiment of the present invention, as shown in fig. 8 and 9, the handle mechanism 1 includes a rotating handle 120, a mounting head 122 is disposed at a front end of the rotating handle 120, the mounting head 122 is mounted with a mounting groove 119 of the pretightening cylinder 113, and a circular hole 121 is disposed on the rotating handle 120; specifically, the rotating handle 120 is rotated manually or by inserting a steel pipe into the circular hole 121, the pre-tightening cylinder 113 is driven by the rotating handle 120, the ball 114 of the pre-tightening cylinder 113 drives the transmission sleeve 105 to drive the driving bevel gear 106 to drive the positioning bevel gear 202 to drive the wrench sleeve 204 to drive the screw to be screwed or loosened; or the electric mechanism is connected with the mounting groove 119, so that electric screwing or unscrewing is realized.
In an alternative implementation manner of the embodiment of the present invention, as shown in fig. 10, 11 and 12, the rotating mechanism 2 includes a driven bevel gear 206, the driven bevel gear 206 is installed on an outer ring of the bearing 207, and an inner ring of the bearing 207 is installed on an inner side of the wrench socket 204; specifically, the driven bevel gear 206 rotates opposite to the wrench socket 204, and the driven bevel gear 206 plays a supporting role to support the driving bevel gear 106; specifically, the thrust bearing C203 is arranged in the positioning bevel gear 202, and the cover plate 201 is arranged on the rotating mechanism shell 102;
a friction arc surface 205 is arranged on the outer side of the wrench socket 204; the friction force is increased by the contact of the friction arc surface 205 and the friction shaft 107, thereby protecting the groove part inside the insertion grip 101 of the locking sleeve 10.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Claims (7)
1. An assist wrench, comprising: the handle mechanism (1) and the rotating mechanism (2), wherein the rotating mechanism (2) is arranged in the handle mechanism (1);
the handle mechanism (1) comprises a power transmission part, a mode switching part, a pre-tightening force clamping part and a handle (101), wherein the power transmission part comprises a driving bevel gear (106) and a transmission sleeve (105), and the driving bevel gear (106) is fixedly connected with the transmission sleeve (105); the transmission sleeve (105) is connected with the pretightening force clamping part; the tightness of the screwed screw is further determined by setting the pre-tightening force through the pre-tightening force holding part;
the mode switching part comprises a clamping sleeve (108), the clamping sleeve (108) is slidably mounted on the outer side of the transmission sleeve (105), and the clamping sleeve (108) is matched with a groove of the transmission sleeve (105) to realize synchronous rotation; mode switching is realized by clamping the clamping sleeve (108) and a positioning block at the inner side of the grip (101);
the pre-tightening force clamping part comprises a pre-tightening force cylinder (113), a ball (114) and a positioning shaft (115), and a pre-tightening force groove (111) and a positioning round hole (112) are arranged at the end of a thrust bearing A (110) of the transmission sleeve (105); the pre-tightening force cylinder (113) is rotatably arranged in the handle (101), the positioning shaft (115) is arranged in the positioning round hole (112), and the ball (114) is arranged in the pre-tightening force groove (111);
the pretightening force clamping part comprises an inclined sleeve baffle B (116), a thrust bearing B (117) and a ball pushing plate (118), the ball pushing plate (118) is connected with a ball (114) through a spring, the ball pushing plate (118) is arranged in a middle groove of the pretightening force cylinder (113), the inclined sleeve baffle B (116) is rotatably arranged on the pretightening force cylinder (113), and the thrust bearing B (117) is arranged between the inclined sleeve baffle B (116) and the ball pushing plate (118);
the rotating mechanism 2 comprises a positioning bevel gear (202) and a wrench socket (204), the positioning bevel gear (202) is fixedly connected with the wrench socket (204), and the driving bevel gear (106) is meshed with the positioning bevel gear (202).
2. The auxiliary wrench as claimed in claim 1, wherein the mode switching part comprises a friction shaft (107), a locking sleeve (108), a bevel sleeve baffle A (109) and a thrust bearing A (110), the friction shaft (107) is slidably mounted inside the transmission sleeve (105), the friction shaft (107) is fixedly connected with the locking sleeve (108) through a groove on the transmission sleeve (105), a spring is arranged between the locking sleeve (108) and the transmission sleeve (105), and the spring enables the locking sleeve (108) to move towards the bevel sleeve baffle A (109); the inclined sleeve baffle A (109) is rotatably arranged on the transmission sleeve (105), and a thrust bearing A (110) is arranged between the inclined sleeve baffle A (109) and the clamping sleeve (108).
3. The auxiliary wrench as claimed in claim 2, wherein the mode switching part further comprises a manual tightening switch (103), the manual tightening switch (103) is rotatably mounted on the handle (101), an inner slope of the manual tightening switch (103) contacts with a slope of the slope sleeve baffle A (109), and the distance between the slope sleeve baffle A (109) and the driving bevel gear (106) is controlled by rotating the manual tightening switch (103) to control the locking sleeve (108) and the friction shaft (107) for mode switching.
4. The auxiliary wrench as claimed in claim 1, wherein the preload clamping portion further comprises a preload adjusting ring (104), the preload adjusting ring (104) is rotatably mounted on the handle (101), an inclined surface is disposed on an inner side of the preload adjusting ring (104), the inclined surface on the inner side of the preload adjusting ring (104) is in contact with the inclined sleeve baffle a (109), and the preload is adjusted by rotating the preload adjusting ring (104) to adjust a spring distance between the ball pushing plate (118) and the ball (114) to control a friction force between the ball (114) and the preload groove (111).
5. An auxiliary wrench as claimed in claim 1, wherein said handle mechanism 1 comprises a rotary handle (120), a mounting head (122) is provided at the front end of the rotary handle (120), said mounting head (122) is mounted with a mounting recess (119) of the pretensioning cylinder (113), and a circular hole (121) is provided on the rotary handle (120).
6. An auxiliary wrench as claimed in claim 1, characterised in that the turning mechanism (2) comprises a driven bevel gear (206), said driven bevel gear (206) being mounted on the outer race of said bearing (207), the inner race of the bearing (207) being mounted inside the wrench socket (204).
7. An auxiliary wrench as claimed in claim 1, characterised in that a friction arc surface (205) is provided on the outside of said wrench socket (204).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308050.1A CN111300325B (en) | 2020-04-17 | 2020-04-17 | Auxiliary wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308050.1A CN111300325B (en) | 2020-04-17 | 2020-04-17 | Auxiliary wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111300325A CN111300325A (en) | 2020-06-19 |
| CN111300325B true CN111300325B (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010308050.1A Active CN111300325B (en) | 2020-04-17 | 2020-04-17 | Auxiliary wrench |
Country Status (1)
| Country | Link |
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| CN (1) | CN111300325B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728668B (en) * | 2020-07-09 | 2022-06-07 | 泸州市人民医院 | Medical electric bone taking clamp |
| CN112959255B (en) * | 2021-02-23 | 2022-12-20 | 王田田 | Electric wrench |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523442B2 (en) * | 2000-12-07 | 2003-02-25 | Acradyne Inc. | Torque tool assembly |
| US7331246B2 (en) * | 2005-07-18 | 2008-02-19 | Easco Hand Tools, Inc. | Mechanical torque wrench with an electronic sensor and display device |
| SE532128C2 (en) * | 2008-02-20 | 2009-10-27 | Atlas Copco Tools Ab | Nut wrench with a power transmission gear and rotation sensing means, as well as method for determining gear status |
| CN201645391U (en) * | 2010-03-19 | 2010-11-24 | 济南博安自控科技有限公司 | Handheld electric constant-torque wrench |
| CN202292541U (en) * | 2011-10-10 | 2012-07-04 | 深圳市特力德精密工具有限公司 | Torque wrench |
| CN205380611U (en) * | 2015-11-24 | 2016-07-13 | 中国人民解放军军械工程学院 | Overload inefficacy type wrench handle |
| CN106002805B (en) * | 2016-06-20 | 2017-11-10 | 三峡大学 | A kind of semi-automatic torque-variable spanner |
| CN207888525U (en) * | 2018-02-09 | 2018-09-21 | 姜周 | A kind of reliable axially driving spanner of using flexible |
| CN108789243A (en) * | 2018-09-05 | 2018-11-13 | 上海优拜机械股份有限公司 | Axial disk ratchet skidding spanner |
| CN209682046U (en) * | 2019-04-15 | 2019-11-26 | 武永清 | Multi-functional small space torque-variable spanner |
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2020
- 2020-04-17 CN CN202010308050.1A patent/CN111300325B/en active Active
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| CN111300325A (en) | 2020-06-19 |
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Effective date of registration: 20210825 Address after: 422000 warehouse of Dongfeng Road Yuanzi company, Liangshi Town, Shaodong county, Shaoyang City, Hunan Province Applicant after: Hunan Donghai Hardware Tool Manufacturing Co.,Ltd. Address before: 066000 501, unit 2, building 10, Shidai Jiayuan, Changli County, Qinhuangdao City, Hebei Province Applicant before: Wang Huijuan |
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