CN113001454B - Combined solid wrench - Google Patents
Combined solid wrench Download PDFInfo
- Publication number
- CN113001454B CN113001454B CN202110281412.7A CN202110281412A CN113001454B CN 113001454 B CN113001454 B CN 113001454B CN 202110281412 A CN202110281412 A CN 202110281412A CN 113001454 B CN113001454 B CN 113001454B
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- China
- Prior art keywords
- solid wrench
- rod
- head
- hole
- adjusting rod
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Classifications
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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
- B25B13/00—Spanners; Wrenches
- B25B13/56—Spanner sets
-
- 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
-
- 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)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The invention discloses a combined solid wrench, which comprises a short-handle solid wrench, an adjusting rod and an end rod, wherein the short-handle solid wrench is connected with the adjusting rod through the adjusting rod; the handle part of the short-handle solid wrench is matched with the space to be used and is provided with a through hole; the head of the adjusting rod is provided with a stud matched with the through hole, and the short-handle solid wrench is sleeved on the stud and is fixed with the adjusting rod through a nut; the head of the end rod is connected with the tail of the adjusting rod, and the angle of the end rod can be adjusted. When the screw needs to be disassembled and assembled, the short-handle solid wrench is fixed at the head of the adjusting rod, and then the angle between the tail of the adjusting rod and the head of the end rod is adjusted and fixed according to actual needs; this combination solid wrench can carry out the regulation of angle between short handle solid wrench, regulation pole and the end pole according to actual need, and solid wrench's stalk portion and the space phase-match that waits to use, and then has simplified the dismouting of screw. Therefore, the combined solid wrench provided by the invention can simplify the disassembly and assembly of the screw in a narrow space, and solves the problem in the field at the present stage.
Description
Technical Field
The invention relates to the technical field of wrenches, in particular to a combined solid wrench.
Background
In the process of implementing operation of an electromechanical engineering project, fastening and dismounting of a large number of screws are often accompanied, and in some specific areas, due to the fact that the number of screws is large and parts are dense, space is narrow, and the embarrassment that the existing tool cannot be used exists; even if two wrenches are adopted for matching, the problem that the angle is not easy to master and the screw is easy to slip is also solved, the hexagonal surface of the screw is damaged, the working efficiency is reduced, and the labor intensity of workers is increased.
Therefore, how to optimize the wrench to simplify the disassembling and assembling of the screw in the narrow space is a difficult problem to be solved urgently in the field at the present stage.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a combination solid wrench, which can simplify the assembly and disassembly of screws in a narrow space, and solve the problems in the prior art.
A combination solid wrench, comprising:
the handle part of the short-handle solid wrench is matched with the space to be used and is provided with a through hole;
the head of the adjusting rod is provided with a stud matched with the through hole, and the short-handle solid wrench is sleeved on the stud and is fixed with the adjusting rod through a nut;
the head of the end rod is connected with the tail of the adjusting rod, and the angle of the end rod is adjustable.
Preferably, the through hole of the combined solid wrench is a hexagonal hole, the head of the stud is provided with threads, and the tail of the stud is a hexagonal prism matched with the hexagonal hole.
Preferably, the maximum angle of the adjusting rod rotating left and right relative to the end rod is 90 degrees.
Preferably, the combined solid wrench is characterized in that two extension lugs are symmetrically arranged on the peripheral surface of the tail of the adjusting rod, and first steering holes are symmetrically arranged on the two extension lugs;
the head of the end rod is provided with a second steering hole matched with the first steering hole;
the head of the end rod can be placed between the two extension lugs to rotate left and right, and the head of the end rod is fixed to the tail of the adjusting rod through the matching of a bolt and a nut matched with the first steering hole.
Preferably, the end rod of the combined solid wrench is of a telescopic design.
Preferably, the end rod of the combined solid wrench comprises a sleeve and a telescopic rod which is arranged in the sleeve and can slide along the inner wall of the sleeve;
the second steering hole is located at the head of the telescopic rod, the head of the telescopic rod can be placed between the two extension lugs to rotate left and right, and the tail of the adjusting rod is fixed through the matching of a bolt and a nut matched with the first steering hole.
Preferably, the combination solid wrench, the tail portion of the telescopic rod is inserted with a rotating shaft, the inner wall of the sleeve is symmetrically provided with two sliding grooves, and two ends of the rotating shaft can respectively slide along the two sliding grooves to achieve the telescopic function of the telescopic rod.
Preferably, the combined solid wrench is characterized in that the head of the sleeve is provided with a rotating groove matched with the telescopic rod, and the tail of the telescopic rod can rotate and enter the rotating groove so as to realize the adjustment of the angle between the telescopic rod and the sleeve.
Preferably, the head of the sleeve of the combined solid wrench is symmetrically provided with two rotating grooves.
Preferably, the combination solid wrench, the short handle solid wrench is of multiple types, and each short handle solid wrench is provided with the through hole.
The invention provides a combined solid wrench, which comprises a short-handle solid wrench, an adjusting rod and an end rod; the handle part of the short-handle solid wrench is matched with the space to be used and is provided with a through hole; the head of the adjusting rod is provided with a stud matched with the through hole, and the short-handle solid wrench is sleeved on the stud and is fixed with the adjusting rod through a nut; the head of the end rod is connected with the tail of the adjusting rod, and the angle of the end rod can be adjusted. When the screw needs to be disassembled and assembled, the short-handle solid wrench is fixed at the head of the adjusting rod, and then the angle between the tail of the adjusting rod and the head of the end rod is adjusted and fixed according to actual needs; this combination solid wrench can carry out the regulation of angle between short handle solid wrench, regulation pole and the end pole according to actual need, and solid wrench's stalk portion and the space phase-match that waits to use, and then has simplified the dismouting of screw. Therefore, the combined solid wrench provided by the invention can simplify the disassembly and assembly of the screw in a narrow space, and solves the problem in the field at the present stage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a combination solid wrench according to an embodiment of the present invention;
FIG. 2 is a schematic view of various short-handled solid wrench according to an embodiment of the present invention;
FIG. 3 is a front view of an adjustment lever according to an embodiment of the present invention;
FIG. 4 is a side view of an adjustment lever according to an embodiment of the present invention;
FIG. 5 is a front view of a telescoping pole in accordance with an embodiment of the present invention;
FIG. 6 is a side view of a telescoping pole in accordance with an embodiment of the present invention;
FIG. 7 is a front view of a sleeve according to an embodiment of the present invention;
fig. 8 is a side view of a sleeve in an embodiment of the invention.
In fig. 1-8:
a short-handle solid wrench-1; a through-hole-2; an adjusting rod-3; a stud-4; a lengthening lug-5; a first turning hole-6; a second turning hole-7; a sleeve-8; a telescopic rod-9; a rotating shaft-10; rotating the trough-11.
Detailed Description
The core of the specific embodiment is to provide a combined solid wrench, which can simplify the disassembly and assembly of screws in a narrow space, and solve the problem in the field at the present stage.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
The combined solid wrench provided by the specific embodiment comprises a short-handle solid wrench 1, an adjusting rod 3 and an end rod; the handle part of the short-handle solid wrench 1 is matched with a space to be used and is provided with a through hole 2; the head of the adjusting rod 3 is provided with a stud 4 matched with the through hole 2, and the short-handle solid wrench 1 is sleeved on the stud 4 and is fixed with the adjusting rod 3 through a nut; the head of the end rod is connected with the tail of the adjusting rod 3, and the angle is adjustable.
When the screw needs to be disassembled and assembled, the short-handle solid wrench 1 is fixed at the head of the adjusting rod 3, and then the angle between the tail of the adjusting rod 3 and the head of the end rod is adjusted and fixed according to actual needs; this combination solid wrench can carry out the regulation of angle between short handle solid wrench 1, regulation pole 3 and the end pole according to actual need, and solid wrench's stalk portion and the space phase-match that waits to use, and then has simplified the dismouting of screw.
Therefore, the combined solid wrench provided by the invention can simplify the disassembly and assembly of the screw in a narrow space, and solves the problem in the field at the present stage. Please refer to fig. 1-8.
In the combined solid wrench provided by the present embodiment, the through hole 2 may be a hexagonal hole, the head of the stud 4 may be provided with a thread, and the tail of the stud 4 is a hexagonal prism matched with the hexagonal hole; during the equipment, with short handle solid wrench 1 suit on the hexagonal prism, and then realize the fixed of short handle solid wrench 1 and regulation pole 3 through the cooperation of nut and screw thread. The hexagonal holes and the hexagonal prism are matched, so that six assemblies can be arranged between the short-handle solid wrench 1 and the adjusting rod 3 to adjust the angle, and the actual use requirements are further met.
In the combined solid wrench provided by the embodiment, the maximum angle of the adjusting rod 3 rotating left and right relative to the end rod can be 90 degrees; the adjusting rod 3 can swing left and right relative to the end rod, the amplitude of the leftward swing and the amplitude of the rightward swing are both 90 degrees, the adjusting rod 3 can swing 180 degrees relative to the end rod, and therefore actual requirements can be better met.
Furthermore, the outer peripheral surface of the tail part of the adjusting rod 3 can be symmetrically provided with two extending lugs 5, and the two extending lugs 5 are symmetrically provided with first steering holes 6; the head of the end rod can be provided with a second steering hole 7 matched with the first steering hole 6; the head of the end rod can be placed between the two extension lugs 5 to rotate left and right, and the tail of the adjusting rod 3 is fixed through the matching of a bolt and a nut which are matched with the first steering hole 6; through foretell structural design promptly, can be more convenient for realize adjusting the regulation and the fixing of angle between pole 3 and end pole, make things convenient for actual equipment and use.
In the combined solid wrench provided by the present embodiment, the end rod can be designed to be retractable so as to further increase the actual use function of the combined solid wrench.
Preferably, in the combined solid wrench, the end rod may include a sleeve 8 and a telescopic rod 9 disposed in the sleeve 8 and capable of sliding along an inner wall of the sleeve 8; at this time, the second turning hole 7 may be located at the head of the telescopic rod 9, that is, the head of the telescopic rod 9 may be placed between the two extending lugs 5 at the tail of the adjusting rod 3 to rotate left and right, and the fixing with the tail of the adjusting rod 3 is realized through the matching of the bolt and the nut matched with the first turning hole 6.
Further, a rotating shaft 10 can be inserted into the tail of the telescopic rod 9, two sliding grooves can be symmetrically formed in the inner wall of the sleeve 8, and two ends of the rotating shaft 10 can slide along the two sliding grooves respectively to achieve the extension and retraction of the telescopic rod 9; of course, in practical design, the sliding design between the telescopic rod 9 and the sleeve 8 may be in other forms that can perform the same function.
In the combined solid wrench provided by the present embodiment, the head of the sleeve 8 may be provided with a rotating groove 11 matched with the telescopic rod 9, and the tail of the telescopic rod 9 may rotate and enter the rotating groove 11, so as to adjust the angle between the telescopic rod 9 and the sleeve 8; and the head of sleeve 8 can be symmetrical has seted up two and has rotated groove 11, and this design can make telescopic link 9 and sleeve 8 have the rotation of two directions about to adjust, further increases the function of combination solid wrench in-service use. And after the angle adjustment, the telescopic rod 9 and the sleeve 8 can be used as a force application rod according to actual conditions, so that the practical operation is convenient.
It should be noted that, because the telescopic rod 9 matches with the rotating groove 11 of the sleeve 8, after the telescopic rod 9 enters the rotating groove 11, it can be locked with the rotating groove 11, so as to facilitate the use of the combined solid wrench.
In the combined solid wrench provided by the embodiment, the short-handle solid wrench 1 can be of various types, and each short-handle solid wrench 1 is provided with a through hole 2; and then the short-handle solid wrench 1 with proper model and size can be selected for use according to actual requirements.
It should be noted that the head and tail portions mentioned in the present embodiment are described based on the left and right portions shown in fig. 1.
In the description 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 of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting 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.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A combination solid wrench, comprising:
the handle part of the short-handle solid wrench (1) is matched with a space to be used and is provided with a through hole (2);
the head of the adjusting rod (3) is provided with a stud (4) matched with the through hole (2), and the short-handle solid wrench (1) is sleeved on the stud (4) and is fixed with the adjusting rod (3) through a nut;
the head of the end rod is connected with the tail of the adjusting rod (3), and the angle of the end rod can be adjusted;
the outer peripheral surface of the tail part of the adjusting rod (3) is symmetrically provided with two extending lugs (5), and the two extending lugs (5) are symmetrically provided with first steering holes (6);
the head of the end rod is provided with a second steering hole (7) matched with the first steering hole (6);
the head of the end rod can be placed between the two extension lugs (5) to rotate left and right, and the end rod is fixed to the tail of the adjusting rod (3) through the matching of a bolt and a nut matched with the first steering hole (6);
the end rod comprises a sleeve (8) and a telescopic rod (9) which is arranged in the sleeve (8) and can slide along the inner wall of the sleeve (8);
the second steering hole (7) is positioned at the head of the telescopic rod (9), the head of the telescopic rod (9) can be placed between the two extension lugs (5) to rotate left and right, and the tail of the adjusting rod (3) is fixed through the matching of a bolt and a nut matched with the first steering hole (6);
a rotating shaft (10) is inserted into the tail of the telescopic rod (9), two sliding grooves are symmetrically formed in the inner wall of the sleeve (8), and two ends of the rotating shaft (10) can slide along the two sliding grooves respectively to achieve the telescopic effect of the telescopic rod (9);
the head of the sleeve (8) is provided with a rotating groove (11) matched with the telescopic rod (9), and the tail of the telescopic rod (9) can rotate and enter the rotating groove (11) to realize the adjustment of the angle between the telescopic rod (9) and the sleeve (8).
2. The combination solid wrench as claimed in claim 1, wherein the through hole (2) is a hexagonal hole, the head of the stud (4) is provided with threads, and the tail of the stud (4) is a hexagonal prism matched with the hexagonal hole.
3. Combination solid wrench according to claim 1, characterized in that the maximum angle of the left and right turning of the adjusting lever (3) in relation to the end bar is 90 °.
4. Combination solid wrench according to claim 1, characterized in that the end rod is of telescopic design.
5. The combination solid wrench as claimed in claim 1, wherein the head of the sleeve (8) is symmetrically provided with two rotation slots (11).
6. The combination solid wrench as claimed in claim 1, wherein the short-handled solid wrench (1) has a plurality of models, and each short-handled solid wrench (1) is provided with the through hole (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110281412.7A CN113001454B (en) | 2021-03-16 | 2021-03-16 | Combined solid wrench |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110281412.7A CN113001454B (en) | 2021-03-16 | 2021-03-16 | Combined solid wrench |
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CN113001454A CN113001454A (en) | 2021-06-22 |
CN113001454B true CN113001454B (en) | 2022-05-03 |
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CN202110281412.7A Active CN113001454B (en) | 2021-03-16 | 2021-03-16 | Combined solid wrench |
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Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20090037052A (en) * | 2007-10-11 | 2009-04-15 | 이경동 | Wrench device for implant operation |
CN102019596A (en) * | 2011-01-12 | 2011-04-20 | 忻明良 | Ratchet wrench |
CN103447975A (en) * | 2012-06-04 | 2013-12-18 | 上海昆杰五金工具有限公司 | Multifunctional telescopic clamp |
CN203438199U (en) * | 2013-08-30 | 2014-02-19 | 国家电网公司 | Combination wrench |
CN105415286A (en) * | 2015-12-14 | 2016-03-23 | 苏州创丰精密五金有限公司 | Multifunctional disassembling jig |
CN206653317U (en) * | 2017-04-28 | 2017-11-21 | 金志刚 | A kind of labour-saving spanner of convenient operation |
CN107877436A (en) * | 2017-11-24 | 2018-04-06 | 苏州沃森优金电子科技有限公司 | A kind of Multifunctional wrench |
CN207696424U (en) * | 2017-11-28 | 2018-08-07 | 左德贵 | A kind of bending type monkey wrench |
CN207841154U (en) * | 2017-12-27 | 2018-09-11 | 江门市泰林精密机械有限公司 | A kind of portable multifunctional wrench |
CN209999060U (en) * | 2019-05-31 | 2020-01-31 | 湖南中烟工业有限责任公司 | inertia vibrating conveyor vibration source adjusting nut dismounting tool |
CN210046580U (en) * | 2019-05-21 | 2020-02-11 | 天津维度防爆工具有限公司 | Explosion-proof double-end solid wrench convenient to adjust |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201263686Y (en) * | 2008-07-18 | 2009-07-01 | 李昌伟 | Universal positioning apparatus for probe of transvaginal ultrasound operation |
DE202008012344U1 (en) * | 2008-09-16 | 2010-02-11 | Roesler, Christoph | Device for exact, e.g. Vertical or horizontal guiding of working tools on excavators, in particular for screwing in soil penetration products |
CN103707243A (en) * | 2012-09-29 | 2014-04-09 | 江苏博固机电有限公司 | Modified foldable electric screwdriver |
CN205572287U (en) * | 2016-04-04 | 2016-09-14 | 熊陵 | Collapsible telescopic T type box spanner pole |
CN107791744B (en) * | 2017-09-28 | 2020-05-05 | 安徽江淮汽车集团股份有限公司 | Portable automobile-mounted tool |
-
2021
- 2021-03-16 CN CN202110281412.7A patent/CN113001454B/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20090037052A (en) * | 2007-10-11 | 2009-04-15 | 이경동 | Wrench device for implant operation |
CN102019596A (en) * | 2011-01-12 | 2011-04-20 | 忻明良 | Ratchet wrench |
CN103447975A (en) * | 2012-06-04 | 2013-12-18 | 上海昆杰五金工具有限公司 | Multifunctional telescopic clamp |
CN203438199U (en) * | 2013-08-30 | 2014-02-19 | 国家电网公司 | Combination wrench |
CN105415286A (en) * | 2015-12-14 | 2016-03-23 | 苏州创丰精密五金有限公司 | Multifunctional disassembling jig |
CN206653317U (en) * | 2017-04-28 | 2017-11-21 | 金志刚 | A kind of labour-saving spanner of convenient operation |
CN107877436A (en) * | 2017-11-24 | 2018-04-06 | 苏州沃森优金电子科技有限公司 | A kind of Multifunctional wrench |
CN207696424U (en) * | 2017-11-28 | 2018-08-07 | 左德贵 | A kind of bending type monkey wrench |
CN207841154U (en) * | 2017-12-27 | 2018-09-11 | 江门市泰林精密机械有限公司 | A kind of portable multifunctional wrench |
CN210046580U (en) * | 2019-05-21 | 2020-02-11 | 天津维度防爆工具有限公司 | Explosion-proof double-end solid wrench convenient to adjust |
CN209999060U (en) * | 2019-05-31 | 2020-01-31 | 湖南中烟工业有限责任公司 | inertia vibrating conveyor vibration source adjusting nut dismounting tool |
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