CN112192490B - A spanner mechanism that is used for spare part bottom fixation nut in narrow and small space - Google Patents
A spanner mechanism that is used for spare part bottom fixation nut in narrow and small space Download PDFInfo
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- CN112192490B CN112192490B CN202011004461.8A CN202011004461A CN112192490B CN 112192490 B CN112192490 B CN 112192490B CN 202011004461 A CN202011004461 A CN 202011004461A CN 112192490 B CN112192490 B CN 112192490B
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- movable sleeve
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- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 18
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- 238000007906 compression Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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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
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
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- Engineering & Computer Science (AREA)
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of assembling tools and discloses a wrench mechanism for fixing a nut at the bottom end of a part in a narrow space. This a spanner mechanism for spare part bottom fixation nut in narrow and small space to the setting of spiral wire casing helix orbit length, makes it in a rotation cycle, can twist the nut completely on bolt or the screw rod and break away from the nut draw-in groove on the movable sleeve, and can not take place spiral decline action along with the movable sleeve again under the elasticity answer of clockwork spring, and then cause the nut, play pad and flat pad to take place not hard up phenomenon of droing, further improved this spanner mechanism's stability and reliability.
Description
Technical Field
The invention relates to the technical field of assembling tools, in particular to a wrench mechanism for fixing a nut at the bottom end of a part in a narrow space.
Background
A nut is an important screw connection component, which can be detachably fastened to a component in cooperation with a bolt, a screw, or the like, and in order to enhance the connection strength between the nut and the bolt or the screw, it is generally necessary to add a resilient pad and a flat pad when the fastened component is mounted, so as to prevent the nut from loosening during long-term use.
Because threaded connection has widely used basis, in the assembly operation in-process of reality, there are some spare parts because the reason of its own structure, cause the mounted position of nut to be in a comparatively narrow and small space for remote, and current spanner can't support the nut effectively so that send into it and twist on the bolt falls the screw rod in advance, especially some need follow the spare part that up screwed nut fastening, and the installation degree of difficulty of bullet pad and flat pad is higher under the influence of gravity, the operation degree of difficulty is great, the phenomenon that drops very easily appears, can appear in the condition that the nut was not known and directly screwed up in the dropping of the in-process bullet pad or flat pad of assembly even, cause the equipment after the installation to lead to the nut not hard up and lead to equipment to take place the displacement because of vibrations in the use of later stage, and then the phenomenon of major incident appears.
Therefore, there is a need for a wrench mechanism that requires a nut to be installed from bottom to top in a small space, so as to overcome the above-mentioned problems during assembly.
Disclosure of Invention
Technical problem to be solved
The invention provides a wrench mechanism for fixing a nut at the bottom end of a part in a narrow space, which has the advantages of effectively clamping the nut, an elastic cushion and a flat cushion to prevent the nut, the elastic cushion and the flat cushion from falling off in the installation process, reducing the installation difficulty and the operation difficulty of the nut in the narrow space and preventing the nut from loosening caused by the fact that the elastic cushion or the flat cushion is not dropped down unwittingly, and solves the problems that the existing wrench cannot effectively support the nut so as to feed the nut into a bolt falling screw and pre-screw the nut on the bolt falling screw, particularly the parts needing to screw the nut from bottom to top, the installation difficulty of the elastic cushion and the flat cushion is higher under the influence of gravity, the operation difficulty is higher, the phenomenon of falling easily occurs, even the phenomenon that the elastic cushion or the flat cushion is dropped to cause the nut to be unwittingly and the nut is directly screwed down in the assembly process can occur, so that the nut is loosened and the equipment is displaced in the later use process, and further a serious safety accident occurs.
(II) technical scheme
The invention provides the following technical scheme: a wrench mechanism for fixing a nut at the bottom end of a part in a narrow space comprises a fixing sleeve, a handle is fixedly mounted at the bottom of one side outside the fixing sleeve, a movable sleeve is sleeved at the middle part of an inner cavity of the fixing sleeve in a movable mode, an installation clamping groove is formed in the top of the outer surface of the movable sleeve, a spiral wire groove is formed in the bottom of the outer surface of the movable sleeve, an installation inner groove is formed in the bottom end of the inner part of the movable sleeve, a nut clamping groove is formed in the top end of the inner part of the movable sleeve, a spring is fixedly mounted in the installation clamping groove, the outer surface of the spring is fixedly connected with the inner wall of the fixing sleeve, a transmission traction wire is wound in the spiral wire groove, the other end of the transmission traction wire penetrates through the handle and extends to the outer part of the handle and is fixedly connected with a pull rod, a positioning connecting rod is movably sleeved in the middle part of the inner cavity of the movable sleeve, a fixing connecting rod is fixedly mounted at the middle part of the outer surface of the positioning connecting rod and positioned in the installation inner groove, the bottom of the outer surface of the positioning connecting rod is movably sleeved with a pressure spring below the fixed connecting plate, and the bottom of the outer surface of the positioning connecting rod is movably sleeved with a mounting bottom plate and is in threaded connection with the bottom end of the movable sleeve.
Preferably, the length of the top end of the positioning connecting rod extending out of the bottom of the nut clamping groove is larger than the sum of the heights of the nut, the elastic pad and the flat pad in corresponding sizes, and a disc-shaped permanent magnet with the diameter smaller than that of the disc-shaped permanent magnet is arranged inside the top end of the positioning connecting rod.
Preferably, the total length of the spiral track of the spiral line groove and the maximum compression length of the pressure spring are both greater than the length of the top end of the positioning connecting rod extending out of the bottom of the nut clamping groove.
Preferably, the spiral spring is internally provided with a spiral return structure, and the maximum effective stroke of the spiral spring is greater than the length of the top end of the positioning connecting rod extending out of the bottom of the nut clamping groove.
(III) advantageous effects
The invention has the following beneficial effects:
1. this a wrench mechanism for spare part bottom fixation nut in narrow and small space, through the setting of movable sleeve and its upper structure, can form a set of power transmission and answer mechanism in this wrench mechanism's inside, drive movable sleeve through pulling transmission pull wire and make the ascending action of spiral, so that cup joint the nut of joint on the nut draw-in groove and activity bullet pad and the flat pad of cup jointing on the location connecting rod and twist in advance on bolt or screw rod, compare with current technique, during mounting nut from bottom to top in narrow and small space, the nut that the unwillingly that can not appear bullet pad or flat pad again drops and lead to is not hard up the phenomenon, and whole operation is simple and convenient, it is quick effective, make the equipment joint strength after the assembly higher, security and stability are better.
2. This a spanner mechanism for spare part bottom fixation nut in narrow and small space to the setting of spiral wire casing helix orbit length, makes it in a rotation cycle, can twist the nut completely on bolt or the screw rod and break away from the nut draw-in groove on the movable sleeve, and can not take place spiral decline action along with the movable sleeve again under the elasticity answer of clockwork spring, and then cause the nut, play pad and flat pad to take place not hard up phenomenon of droing, further improved this spanner mechanism's stability and reliability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the movable sleeve of the present invention;
FIG. 3 is a schematic view of a positioning link according to the present invention;
FIG. 4 is a schematic view of the mounting structure of the movable sleeve and the positioning link according to the present invention.
In the figure: 1. fixing the sleeve; 2. a handle; 3. a movable sleeve; 4. installing a clamping groove; 5. a spiral wire groove; 6. installing an inner groove; 7. a nut slot; 8. a clockwork spring; 9. driving a traction wire; 10. a pull rod; 11. positioning the connecting rod; 12. fixing the connecting plate; 13. a pressure spring; 14. and (5) mounting a bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a wrench mechanism for fixing a nut at the bottom end of a component in a narrow space comprises a fixed sleeve 1, a handle 2 is fixedly installed at the bottom of one side of the outside of the fixed sleeve 1, a movable sleeve 3 is movably sleeved at the middle part of the inner cavity of the fixed sleeve 1, an installation clamping groove 4 is arranged at the top part of the outer surface of the movable sleeve 3, a spiral wire groove 5 is arranged at the bottom part of the outer surface of the movable sleeve 3, an installation inner groove 6 is arranged at the bottom end of the inside of the movable sleeve 3, a nut clamping groove 7 is arranged at the top end of the inside of the movable sleeve 3, a clockwork spring 8 is fixedly installed inside the installation clamping groove 4, the outer surface of the clockwork spring 8 is fixedly connected with the inner wall of the fixed sleeve 1, a transmission traction wire 9 is wound inside the spiral wire groove 5, the other end of the transmission traction wire 9 penetrates through the handle 2 and extends to the outside of the handle and is fixedly connected with a pull rod 10, a positioning connecting rod 11 is movably sleeved at the middle part of the inner cavity of the movable sleeve 3, the middle part of the outer surface of the positioning connecting rod 11 and the inner part of the installation inner groove 6 are fixedly provided with a fixed connecting plate 12, the bottom of the outer surface of the positioning connecting rod 11 and the lower part of the fixed connecting plate 12 are movably sleeved with a pressure spring 13, and the bottom of the outer surface of the positioning connecting rod 11 is movably sleeved with an installation bottom plate 14 and is in threaded connection with the bottom end of the movable sleeve 3.
Wherein, to activity sleeve 3 and the setting of last structure, can form a set of power transmission and answer mechanism in this spanner mechanism's inside, drive activity sleeve 3 through pulling transmission pull wire 9 and make rotatory ascending action to in advance twist the nut, bullet pad and the flat pad of joint on nut draw-in groove 7 and location connecting rod 11 on bolt or screw rod, and utilize fixed even board 12 to drive activity sleeve 3 and answer initial position.
In the technical scheme, the length of the top end of the positioning connecting rod 11 extending out of the bottom of the nut clamping groove 7 is larger than the sum of the heights of the nut, the elastic pad and the flat pad in corresponding sizes, and a disc-shaped permanent magnet with the diameter smaller than that of the disc-shaped permanent magnet is arranged in the top end of the positioning connecting rod 11.
Wherein, to the setting of positioning connecting rod 11 extension length for bullet pad and flat pad can not appear the phenomenon that drops in the screwing up in advance of nut, and whole operation process is simple, convenient effective, and screwing up in advance stability and reliability from bottom to top to narrow and small space internal nut are higher.
Wherein, to the setting of 11 top disc permanent magnets of location connecting rod to in the axis with location connecting rod 11 corresponds with the neutral line of bolt or screw rod, make nut, bullet pad and the flat pad in this mechanism can be in bolt or screw rod all the time under, just once only can accomplish its operation of screwing up in advance, work efficiency is higher.
In the technical scheme, the total length of the spiral track of the spiral wire groove 5 and the maximum compression length of the pressure spring 13 are both greater than the length of the top end of the positioning connecting rod 11 extending out of the bottom of the nut clamping groove 7.
Wherein, to the setting of 5 spiral line orbit lengths in spiral wire casing to in a rotation cycle, the nut can be complete twist bolt or screw rod on, make it can not take place the phenomenon that the rotation dropped again thereupon under the elasticity answer of clockwork spring 8, further improvement this spanner mechanism's stability and reliability.
In the technical scheme, a vortex-shaped return structure is arranged in the clockwork spring 8, and the maximum effective stroke of the vortex-shaped return structure is greater than the length of the top end of the positioning connecting rod 11 extending out of the bottom of the nut clamping groove 7.
Wherein, to the setting of clockwork spring 8 for when this spanner mechanism was twisted the nut, bullet pad and flat pad on bolt or screw rod in advance again, the rotatory initial position that returns of drive movable sleeve 3 that can be timely, and twine spiral wire casing 5 again with transmission pull wire 9 on.
The use method and the working principle of the embodiment are as follows:
when nuts are required to be installed from bottom to top in a narrow space, firstly, matched nuts are clamped on a nut clamping groove 7 of a movable sleeve 3, an elastic cushion and a flat cushion are sequentially sleeved on an extended positioning connecting rod 11, then the mechanism is extended into a part to be assembled by holding a handle 2 by hand, the device can be quickly and accurately aligned to the bottom end of a bolt or a screw rod under the action of magnetic force of a permanent magnet at the bottom end of the positioning connecting rod 11, then a transmission pull wire 9 is pulled outwards through a pull rod 10, the movable sleeve 3 is driven to spirally move upwards along the track of a spiral wire groove 5 on the movable sleeve 3, meanwhile, due to mutual contact between the positioning connecting rod 11 and the bolt or the screw rod, and under the mutual meshing between the nuts and the screw rod, the positioning connecting rod 11 gradually moves downwards to drive a fixed connecting plate 12 to compress a pressure spring 13, and further, the nuts clamped on the movable sleeve 3 are completely and pre-screwed on the bolt or the screw rod, meanwhile, the elastic cushion and the flat cushion on the elastic cushion can not fall off, then the handle 2 is pulled downwards to enable the top end of the positioning connecting rod 11 to be separated from the bolt or the screw rod, meanwhile, after the extrusion of the bolt or the screw rod is lost, the positioning connecting rod 11 and the fixed connecting plate 12 are returned to the initial position under the action of the elastic force of the pressure spring 13, then the pull rod 10 is loosened to enable the pull rod to drive the movable sleeve 3 to spirally descend to the initial position under the action of the elastic force of the spring 8, meanwhile, the transmission traction line 9 is gradually withdrawn and wound on the spiral line groove 5, so that the next pre-screwing operation on the nut is facilitated, then, the nut pre-screwed on the bolt or the screw rod is screwed by using a common spanner, and the fastening operation on the parts is completed through the nut.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a spanner mechanism that is used for spare part bottom fixation nut in narrow and small space, includes fixed sleeve (1), the bottom fixed mounting of fixed sleeve (1) outside one side has handle (2), movable sleeve (3), its characterized in that have been cup jointed in the middle part activity of fixed sleeve (1) inner chamber: the top of the outer surface of the movable sleeve (3) is provided with an installation clamping groove (4), the bottom of the outer surface of the movable sleeve (3) is provided with a spiral wire groove (5), the bottom of the inner part of the movable sleeve (3) is provided with an installation inner groove (6), the top of the inner part of the movable sleeve (3) is provided with a nut clamping groove (7), the inner part of the installation clamping groove (4) is fixedly provided with a clockwork spring (8), the outer surface of the clockwork spring (8) is fixedly connected with the inner wall of the fixed sleeve (1), the inner part of the spiral wire groove (5) is wound with a transmission traction wire (9), the other end of the transmission traction wire (9) penetrates through the handle (2) and extends to the outer part of the handle and is fixedly connected with the pull rod (10), the middle part of the inner cavity of the movable sleeve (3) is movably sleeved with a positioning connecting rod (11), the middle part of the outer surface of the positioning connecting rod (11) and the inner part of the installation inner groove (6) are fixedly provided with a fixed connecting plate (12), the bottom of the outer surface of the positioning connecting rod (11) is movably sleeved with a pressure spring (13) below the fixed connecting plate (12), and the bottom of the outer surface of the positioning connecting rod (11) is movably sleeved with an installation bottom plate (14) and is in threaded connection with the bottom end of the movable sleeve (3).
2. The wrench mechanism for fixing the nut at the bottom end of the part in the narrow space according to claim 1, which is characterized in that: the length of the top end of the positioning connecting rod (11) extending out of the bottom of the nut clamping groove (7) is larger than the sum of the heights of the nut, the elastic pad and the flat pad in corresponding sizes, and a disc-shaped permanent magnet with the diameter smaller than that of the positioning connecting rod is arranged in the top end of the positioning connecting rod (11).
3. The wrench mechanism for fixing the nut at the bottom end of the part in the narrow space according to claim 1, which is characterized in that: the total length of a spiral line track of the spiral line groove (5) after one circle of expansion and the maximum compression length of the pressure spring (13) are both greater than the length of the top end of the positioning connecting rod (11) extending out of the bottom of the nut clamping groove (7).
4. The wrench mechanism for fixing the nut at the bottom end of the part in the narrow space according to claim 1, which is characterized in that: the spiral spring (8) is internally provided with a spiral return structure, and the maximum effective stroke of the spiral spring is greater than the length of the top end of the positioning connecting rod (11) extending out of the bottom of the nut clamping groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004461.8A CN112192490B (en) | 2020-09-22 | 2020-09-22 | A spanner mechanism that is used for spare part bottom fixation nut in narrow and small space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004461.8A CN112192490B (en) | 2020-09-22 | 2020-09-22 | A spanner mechanism that is used for spare part bottom fixation nut in narrow and small space |
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| Publication Number | Publication Date |
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| CN112192490A CN112192490A (en) | 2021-01-08 |
| CN112192490B true CN112192490B (en) | 2022-03-29 |
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| CN202011004461.8A Active CN112192490B (en) | 2020-09-22 | 2020-09-22 | A spanner mechanism that is used for spare part bottom fixation nut in narrow and small space |
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| CN102862146A (en) * | 2012-09-21 | 2013-01-09 | 北京金房暖通节能技术有限公司 | Valve core changing tool with water and pressure for constant temperature valve |
| CN104690684A (en) * | 2015-02-10 | 2015-06-10 | 同济大学 | Mounting tool for split unilateral bolt fastening piece synchronously unfolded based on gear mechanism |
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| CN112192490A (en) | 2021-01-08 |
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Effective date of registration: 20220311 Address after: No. 150, Lane 3740, Huaning Road, Minhang District, Shanghai 201108 Applicant after: Shanghai Huxiao Electric Implements Co.,Ltd. Address before: 405400 No.37, Xingnong village, Changsha Town, Kaizhou District, Chongqing Applicant before: Official power |
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