CN204843970U - Wrench - Google Patents

Abstract

The utility model provides a wrench. This wrench includes: wrench handle pole, wrench handle pole include handle pole body and set up the connection structure at the first end of handle pole body, the wrench head, wrench head and connection structure sliding connection, when just pulling handle pole body, the wrench head rotates along first rotation direction for connection structure, is provided with first backstop structure on the wrench head and is used for entangling the location structure who treats the dismouting nut, stop part, stop part setting on wrench handle pole, the stop part be provided with the second backstop structure of mutually supporting with first backstop structure so that the wrench head for connection structure backstop in the second rotation direction with a rotation in the opposite direction. Use the technical scheme of the utility model can solve among the prior art natural atmospheric pressure contracts the piston rod of machine and is equipped with the cap nut and is tearing, adorning the in -process inefficiency open to and maintenance work personnel's the problem that the work degree of difficulty is big.

Description

Spanner

Technical field

The utility model relates to mechanical maintenance tool in use field, in particular to a kind of spanner.

Background technology

In the process of maintenance V-3/6-65 type natural gas compressor, due to the restriction of the opening size of the frame for movement and housing thereof that are subject to this natural gas compressor, the work that maintenance work personnel are carrying out demolition, installation to the piston rod of this natural gas compressor for cap nut is very inconvenient, cause the work difficulty of maintenance work personnel large, piston rod is low for cap nut efficiency in demolition, installation process, the job security of maintenance work personnel is poor, and the poor stability of the assembly quality of natural gas compressor.

Utility model content

Main purpose of the present utility model is to provide a kind of spanner, and to solve in prior art staff, to carry out efficiency in demolition, installation process to the piston rod of natural gas compressor for cap nut low, and the problem that the work difficulty of staff is large.

To achieve these goals, provide a kind of spanner, comprising according to embodiment of the present utility model: spanner handle bar, spanner handle bar comprises handle bar body and is arranged on the syndeton of first end of handle bar body; Wrench head, Wrench head and syndeton are slidably connected, and when pulling handle bar body, Wrench head rotates along the first rotation direction relative to syndeton, Wrench head are provided with the first stop configurations and for entangling the location structure treating dismounting nut; Stop part, stop part is arranged on spanner handle bar, and stop part is provided with the second stop configurations that the first stop configurations cooperatively interacts to make Wrench head relative to syndeton backstop in second rotation direction contrary with the first rotation direction.

Further, handle bar body has the installation through hole for installing stop part, and installation through hole is arranged along the axis direction of handle bar body.

Further, spanner also comprises spring, and spring fitting is in installation through hole, and one end of spring abuts with stop part to make the second stop configurations and the first stop configurations keep counter stopper.

Further, spanner also comprises operation pin member, and handle bar body offers handle hole, and operation pin member is passed handle hole and is connected with stop part, and operation pin member can moving axially with Compress Spring along handle bar body.

Further, Wrench head is annular component, and location structure is arranged on the inwall of annular component, and the first stop configurations is the first backstop tooth that circumference is arranged on the outer peripheral face of Wrench head, and the second stop configurations is the second backstop tooth engaged with the first backstop tooth.

Further, annular component has dodges breach, and location structure is double offset ring spanner through hole, dodges breach and is connected with double offset ring spanner through hole.

Further, form two sidewalls of dodging breach and be arranged in parallel, the width of two sidewalls is less than the interior circular diameter of double offset ring spanner through hole.

Further, syndeton comprises and is oppositely arranged the first side wall and the second sidewall, the first end of the first side wall is all connected with handle bar body with the first end of the second sidewall, second end of the first side wall is provided with the first lug, second sidewall is provided with the second lug, first lug and the second lug extend in opposite directions and have gap, form slipping space between the first side wall and the second sidewall; First side of Wrench head offers first ring connected in star, second side relative with the first side of Wrench head offers the second annular groove, first lug stretches in first ring connected in star, and the second lug stretches in the second annular groove, and part Wrench head is positioned at slipping space.

Further, spanner also comprises and adds long handle, and the first end adding long handle is connected to the second end of handle bar body.

Further, spanner also comprises: at least one first anti-falling piece, and the first anti-falling piece is arranged on the bottom land of first ring connected in star and/or the second annular groove; At least one second anti-falling piece, the second anti-falling piece is arranged on the bottom land of first ring connected in star and/or the second annular groove, and the first anti-falling piece and the second anti-falling piece lay respectively at the both sides of dodging breach.

Application the technical solution of the utility model, this spanner comprises spanner handle bar, Wrench head and stop part, Wrench head is connected in the syndeton of spanner handle bar, at the location structure of Wrench head by after the nut of dismounting entangles, utilize the unidirectional backstop mode that the first stop configurations on the second stop configurations of stop part and Wrench head is formed, namely the second stop configurations can only form the backstop in the second rotation direction to the first stop configurations, make spanner treat dismounting nut to exert a force, owing to being unidirectional backstop, therefore spanner can rotate and rapid adjustment force station along the first rotation direction, to reach the object of Quick detachable nut.Apply this spanner and carry out dismounting nut, the working condition of staff can be improved, and improve the operating efficiency of staff.

Accompanying drawing explanation

The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the assembly structure schematic diagram of the embodiment according to spanner of the present utility model;

Fig. 2 shows the structural representation of the Wrench head of Fig. 1;

Fig. 3 shows the structural representation of the spanner handle bar of Fig. 1;

Fig. 4 shows the structural representation of the stop part according to spanner of the present utility model;

Fig. 5 shows the structural representation adding long handle according to spanner of the present utility model;

Fig. 6 shows the plan structure figure of Fig. 2.

Wherein, above-mentioned accompanying drawing comprises the following drawings mark:

10, spanner handle bar; 11, handle bar body;

12, syndeton; 121, the first side wall;

122, the second sidewall; 20, Wrench head;

21, the first stop configurations; 30, stop part;

31, the second stop configurations; 32, pin-and-hole;

40, pin member is operated; 50, long handle is added;

51, external screw thread; 13, set screw hole;

123, through hole is installed; 201, first ring connected in star;

202, the second annular groove; 22, location structure.

Detailed description of the invention

It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.

As shown in Figures 1 to 4, present embodiments provide a kind of spanner, this spanner is used for dismounting nut or bolt, and, be equipped with according to the different nominal diameter of nut or bolt head the spanner be suitable for mutually and carry out dismounting.The spanner of the present embodiment comprises spanner handle bar 10, Wrench head 20 and stop part 30, wherein, spanner handle bar 10 comprises handle bar body 11 and is arranged on the syndeton 12 of first end of handle bar body 11, Wrench head 20 and syndeton 12 are slidably connected, and when pulling handle bar body 11, Wrench head 20 rotates along the first rotation direction relative to syndeton 12, Wrench head 20 is provided with the first stop configurations 21 and for entangle treat dismounting nut location structure 22 (usually, when staff utilizes this spanner to carry out disassemble and assemble work, that the location structure 22 of this spanner is entangled nut or bolt head from top to bottom), stop part is arranged on spanner handle bar 10, stop part 30 is provided with the second stop configurations 31 that the first stop configurations 21 cooperatively interacts to make Wrench head 20 relative to syndeton 12 backstop in second rotation direction contrary with the first rotation direction.

For ensureing the intensity of spanner handle bar 10, the processing and manufacturing of 45# steel can be adopted, and carry out normalized treatment.

At the location structure 22 of Wrench head 20 by after the nut of dismounting or bolt head entangle, utilize the unidirectional backstop mode that the second stop configurations 31 of stop part 30 is formed with the first stop configurations 21 on Wrench head 20, namely the second stop configurations 31 can only form the backstop in the second rotation direction to the first stop configurations 21, spanner is made to treat dismounting nut or bolt when exerting a force, owing to being unidirectional backstop, therefore spanner can rotate and rapid adjustment force station along the first rotation direction, staff utilizes this spanner to treat the nut of dismounting or bolt carries out in the process of dismounting, staff utilizes after this spanner entangles nut or bolt head, rotating nut or bolt is come by handle bar body 11 force, when needing to adjust the station of spanner relative to nut or bolt, because the first stop configurations 21 and the second stop configurations 31 only form backstop in the second rotation direction, therefore, staff only need be exerted a force towards the direction contrary with the second rotation direction by handle bar body 11, just directly can adjust the operating position of spanner handle bar 10 relative to Wrench head 20, then force work is continued, thus reach the object of Quick detachable nut.Apply this spanner and carry out dismounting nut, the working condition of staff can be improved, and improve the operating efficiency of staff, also can improve the job security of staff simultaneously, and improve the stability of mechanical assembly quality.

In the present embodiment, as shown in Figure 3, handle bar body 11 has the installation through hole 123 for installing stop part 30, and installation through hole 123 is arranged along the axis direction of handle bar body 11.And, this spanner also comprises spring, spring fitting is in installation through hole 123, after spring is placed in described installation through hole 123, special plugging block is utilized to install from the second end opening installing through hole 123, be connected by threaded engagement between plugging block with installation through hole 123 inwall, thus one end of spring is abutted with one end away from Wrench head 20 of stop part 30, the other end of spring abuts with plugging block, now spring is in compression Pre strained state, keeps counter stopper to make the second stop configurations 31 and the first stop configurations 21.By the pretightning force of spring to stop part 30, after this spanner has assembled, the second stop configurations 31 on stop part 30 and the first stop configurations 21 have kept the state often coordinated.Therefore, due to the movement interference effect between the first stop configurations 21 and the second stop configurations 31, relative change in location can not be there is between Wrench head 20 with spanner handle bar 10 under the effect not having external force, guarantee the preparation work state of spanner.For ensureing the intensity of the first backstop tooth and the second backstop tooth, therefore, Wrench head 20 and stop part 30 can adopt the processing and manufacturing of 45# steel, and carry out normalized treatment.

As shown in Figure 1, spanner also comprises operation pin member 40, handle bar body 11 offers handle hole, operation pin member 40 is passed handle hole and is connected in the pin-and-hole 32 on stop part 30 and (operates pin member 40 can be threaded with pin-and-hole 32 and fix, also can be that direct the insertion in pin-and-hole 32 with interference of operation pin member 40 forms a fixed connection), operation pin member 40 can moving axially with Compress Spring along handle bar body 11.The first stop configurations 21 and the second stop configurations 31 is made to keep normal mated condition because spring has pretightning force, in order to the restrictive condition making the preparation work state of spanner be more suitable for the locus residing for nut or bolt head, therefore, staff by operation pin member 40 along handle bar body 11 move axially make stop part 30 installation through hole 123 in move in the axial direction, thus Compress Spring, now the first stop configurations 21 and the second stop configurations 31 depart from, make staff that spanner handle bar 10 can be regulated easily relative to the preparation work position of Wrench head 20.

Shown in composition graphs 1 and Fig. 2, Wrench head 20 is annular component, location structure 22 is arranged on the inwall of annular component, preferably, location structure 22 be common double offset ring spanner through hole (the double offset ring spanner through hole being namely used for entangling nut or bolt head be by with one heart and two of formed objects regular hexagons formed, further, one of them hexagon for rotating shaft, turns over 30 ° formation relative to another hexagon with the axis by its center of circle).First stop configurations 21 is the first backstop tooth that circumference is arranged on the outer peripheral face of Wrench head 20, and the second stop configurations 31 is the second backstop tooth engaged with the first backstop tooth.In an embodiment, the central angle that the first backstop tooth is corresponding with the tooth root arc of the second backstop tooth is 4 °.If the first backstop tooth or the second backstop tooth offered on flat board, so the profile of tooth of the first backstop tooth or the second backstop tooth is right angled triangle.First backstop tooth and the second backstop tooth keep normal engagement by spring, like this, when the flank of tooth of the right-angle side side that the flank of tooth and the second backstop tooth of the right-angle side side of the first backstop tooth are formed produces active force mutually, now between the first stop configurations 21 and the second stop configurations 31, form the backstop in the second rotation direction; When the flank of tooth that another flank of tooth relative with the flank of tooth of right-angle side side of the first backstop tooth is corresponding with the second backstop tooth has interaction force, now form relatively rotating of the first rotation direction between the first stop configurations 21 and the second stop configurations 31, thus fast regulating wrench handle bar 10 is relative to the operating position of Wrench head 20.

In the present embodiment, annular component has dodges breach, and dodges breach and be connected with double offset ring spanner through hole.When the screw rod through nut has suitable length, (length namely through the screw rod of nut is longer, Wrench head 20 directly cannot entangle nut from top to bottom), now, dodging breach and can dodge this screw rod on Wrench head 20, screw rod is passed through from dodging breach, when double offset ring spanner through hole and nut are just right time, double offset ring spanner through hole is being entangled nut from top to bottom by staff.Especially, when staff utilizes this spanner to carry out demolition, installation work to the piston rod of natural gas compressor for cap nut time, connecting rod by dodge breach laggard enter in double offset ring spanner through hole, then Wrench head 20 is entangled piston rod from top to bottom for cap nut by staff, then carries out force work.

When staff applies this spanner, (connecting rod of the natural gas compressor of space constraint is such as subject to for cap nut to the nut be in restricted clearance or bolt, generally, the profile of this nut is positive six prisms, when utilizing general open-end wrench to carry out dismounting, the adjustment angle that open-end wrench adjusts an operating position relative to nut is 60 °) when carrying out dismounting, because the central angle that the first backstop tooth is corresponding with the tooth root arc of the second backstop tooth is 4 °, so when staff adjusts the operating position of spanner relative to nut or bolt head, between first stop configurations 21 and the second stop configurations 31, the angle of a mobile engaging tooth is 4 ° (the adjustment angle that namely the spanner handle bar 10 of this spanner adjusts an operating position relative to Wrench head 20 is 4 °), for general open-end wrench, the angle of the spanner adjustment operating position of the present embodiment is 1/15th of open-end wrench, therefore, the spanner of the present embodiment is more suitable for the disassemble and assemble work being in nut in restricted clearance or bolt relative to general open-end wrench.

Particularly, form two sidewalls of dodging breach and be arranged in parallel, the width of two sidewalls is less than the interior circular diameter of double offset ring spanner through hole (this inner circle is two the orthohexagonal concentric inscribed circles forming double offset ring spanner through hole).Preferably, as shown in Figure 6, the central angle that two sides end points crossing with the inner circle of double offset ring spanner through hole of dodging breach and the line in the inner circle center of circle are formed is 90 ° (namely dodging inner circle central angle corresponding to breach is 90 °).For general open-end wrench, (two open side of general open-end wrench contact with two faceted pebbles of nut or bolt head the double offset ring spanner through hole of such formation, the effective parcel outside to nut or bolt head cannot be formed, course of work split shed spanner is easily skidded) relative to nut or bolt, and the spanner of the present embodiment is relative to existing open-end wrench, the both sides of dodging breach increase the parcel scope of 15 ° respectively, thus more effective parcel is formed to nut or bolt head and is not easy to skid, make disassemble and assemble work more stable, carry out efficiently.

As shown in Figure 3, syndeton 12 comprises and is oppositely arranged the first side wall 121 and the second sidewall 122, the first end of the first side wall 121 is all connected with handle bar body 11 with the first end of the second sidewall 122, second end of the first side wall 121 is provided with the first lug, second sidewall 122 is provided with the second lug, first lug and the second lug extend in opposite directions and have gap, slipping space is formed between the first side wall 121 and the second sidewall 122, first side of Wrench head 20 offers first ring connected in star 201, second side relative with the first side of Wrench head 20 offers the second annular groove 202, first lug stretches in first ring connected in star 201, second lug stretches in the second annular groove 202, and part Wrench head 20 is positioned at slipping space.Like this, first lug and the second lug coordinate with first ring connected in star 201, second annular groove 202 respectively, handle bar body 11 stably can be linked together with Wrench head 20, and Wrench head 20 descend can carry out limited slippage to operate at the first lug and the spacing of the second lug.In order to make the first side wall 121 and the second sidewall 122 be connected on handle bar body 11 more easily, therefore the first end of handle bar body 11 is processed into the connector of increasing, thus provides more link position for the first side wall 121 and the second sidewall 122.

Shown in composition graphs 1 and Fig. 5, in order to reduce the force intensity of staff in disassembly process, alleviate the labour intensity of staff, therefore, spanner also comprises and adds long handle 50, the first end adding long handle 50 is connected to the second end of the handle bar body 11 of spanner handle bar 10, and staff's gripping adds long handle 50 and carries out force work.Utilizing spanner to carry out getting loose in the process of disassemble and assemble work to prevent adding long handle 50 staff, therefore, doing further fixing to adding long handle 50 in the set screw hole 13 utilizing holding screw to be threaded on handle bar body 11.

Preferably, the spring of this spanner is after being placed into installation through hole 123, after one end of spring contacts with stop part 30, plugging block can not be set in addition pretension is carried out to spring, but utilize and add long handle 50 and be threaded in the installation through hole 123 of the second end of spanner handle bar 10, thus utilize and add long handle 50 and abut with the other end of spring, to carry out pretension to spring.

Conveniently deposit this spanner, when depositing this spanner, this spanner can disassemble by staff, and then deposits, and can reduce the parking space of spanner like this.When staff need to apply this spanner carry out dismounting nut or bolt time, each parts of spanner can take out and carry out in-site installation by staff, then utilize the spanner assembled to carry out disassemble and assemble work.First the syndeton 12 of spanner handle bar 10 is connected with Wrench head 20 by dodging breach by staff, then stop part 30 is put into and through hole 123 is installed, again spring fitting is being installed in through hole 123, installation through hole 123 opening of closeouts to handle bar body 11 second end is utilized to carry out shutoff, and pretension is carried out to spring, finally will add mode that long handle 50 is threaded connection and be arranged on the second end of handle bar body 11, this completes the assembly work of spanner.

When not use this spanner at ordinary times time, because Wrench head 20 can relative to spanner handle bar 10 one-directional rotation in the first rotation direction, when syndeton 12 turns to corresponding with dodging breach time, Wrench head 20 will depart from from spanner handle bar 10.Depart to prevent Wrench head 20 and spanner handle bar 10, therefore, spanner also comprises at least one first anti-falling piece and at least one second anti-falling piece, first anti-falling piece is arranged on the bottom land of first ring connected in star 201 and/or the second annular groove 202, second anti-falling piece is arranged on the bottom land of first ring connected in star 201 and/or the second annular groove 202, and the first anti-falling piece and the second anti-falling piece lay respectively at the both sides of dodging breach.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a spanner, is characterized in that, comprising:

Spanner handle bar (10), described spanner handle bar (10) comprises handle bar body (11) and is arranged on the syndeton (12) of first end of described handle bar body (11);

Wrench head (20), described Wrench head (20) and described syndeton (12) are slidably connected, and when pulling described handle bar body (11), described Wrench head (20) rotates along the first rotation direction relative to described syndeton (12), described Wrench head (20) is provided with the first stop configurations (21) and for entangling the location structure (22) treating dismounting nut;

Stop part (30), described stop part (30) is arranged on described spanner handle bar (10), and described stop part (30) is provided with the second stop configurations (31) of cooperatively interacting with described first stop configurations (21) to make described Wrench head (20) relative to described syndeton (12) backstop in second rotation direction contrary with described first rotation direction.

2. spanner according to claim 1, it is characterized in that, described handle bar body (11) has the installation through hole (123) for installing described stop part (30), and described installation through hole (123) is arranged along the axis direction of described handle bar body (11).

3. spanner according to claim 2, it is characterized in that, described spanner also comprises spring, described spring fitting is in described installation through hole (123), and one end of described spring abuts with described stop part (30) to make described second stop configurations (31) and described first stop configurations (21) keep counter stopper.

4. spanner according to claim 3, it is characterized in that, described spanner also comprises operation pin member (40), described handle bar body (11) offers handle hole, described operation pin member (40) is through described handle hole and be connected with described stop part (30), described operation pin member (40) can along described handle bar body (11) move axially compress described spring.

5. spanner according to claim 1, it is characterized in that, described Wrench head (20) is annular component, described location structure (22) is arranged on the inwall of described annular component, the first backstop tooth on the outer peripheral face that described first stop configurations (21) is circumference is arranged on described Wrench head (20), described second stop configurations (31) is the second backstop tooth engaged with described first backstop tooth.

6. spanner according to claim 5, is characterized in that, described annular component has dodges breach, and described location structure (22) is double offset ring spanner through hole, described in dodge breach and be connected with described double offset ring spanner through hole.

7. spanner according to claim 6, is characterized in that, two sidewalls of dodging breach described in formation be arranged in parallel, and the width of described two sidewalls is less than the interior circular diameter of described double offset ring spanner through hole.

8. spanner according to any one of claim 1 to 7, is characterized in that,

Described syndeton (12) comprises and is oppositely arranged the first side wall (121) and the second sidewall (122), the first end of described the first side wall (121) is all connected with described handle bar body (11) with the first end of described second sidewall (122), second end of described the first side wall (121) is provided with the first lug, described second sidewall (122) is provided with the second lug, described first lug and described second lug extend in opposite directions and have gap, slipping space is formed between described the first side wall (121) and described second sidewall (122),

First side of described Wrench head (20) offers first ring connected in star (201), second side relative with described first side of described Wrench head (20) offers the second annular groove (202), described first lug stretches in described first ring connected in star (201), described second lug stretches in described second annular groove (202), and the described Wrench head of part (20) is positioned at described slipping space.

9. spanner according to claim 1, is characterized in that, described spanner also comprises and adds long handle (50), described in add long handle (50) first end be connected to the second end of described handle bar body (11).

10. spanner according to claim 8, is characterized in that, described spanner also comprises:

At least one first anti-falling piece, described first anti-falling piece is arranged on the bottom land of described first ring connected in star (201) and/or described second annular groove (202);

At least one second anti-falling piece, described second anti-falling piece is arranged on the bottom land of described first ring connected in star (201) and/or described second annular groove (202), and described first anti-falling piece and described second anti-falling piece lay respectively at described in dodge the both sides of breach.