CN220408564U

CN220408564U - Chain type wrench

Info

Publication number: CN220408564U
Application number: CN202321861403.6U
Authority: CN
Inventors: 贾振刚; 李帅; 白飞换; 刘强
Original assignee: Shaanxi Huadian Yuheng Coal And Electricity Co ltd
Current assignee: Shaanxi Huadian Yuheng Coal And Electricity Co ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-01-30
Anticipated expiration: 2033-07-14

Abstract

The utility model relates to the technical tool field of disassembly and assembly, in particular to a chain spanner which comprises a handle, a sleeve, a plurality of friction blocks, a first arc plate and a chain component, wherein external threads are arranged on the outer peripheral surface of the handle, internal threads matched with the external threads are arranged in the sleeve, the sleeve is sleeved on the handle through threads, one end of the first arc plate is connected with the handle, the first arc plate is bent along the direction close to the handle, one end of the friction blocks is connected with the first arc plate, one side end face of the friction blocks, far away from the first arc plate, is an arc face, the friction blocks are arranged on the first arc plate at intervals, and the chain component is connected with the sleeve. The chain spanner can avoid slipping and improve the disassembly efficiency.

Description

Chain type wrench

Technical Field

The utility model relates to the technical field of disassembly and assembly tools, in particular to a chain type wrench.

Background

A wrench is a commonly used installation and removal tool, and is a hand tool that uses the principle of leverage to turn bolts, screws, nuts, and other threads to tighten the openings or trepanning fasteners of the bolts or nuts. According to the adjustable chain spanner, nuts can be locked through the chain, but slipping occurs easily in the practical application process, so that the disassembly efficiency is low.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a chain spanner which can avoid slipping and improve the disassembly efficiency.

An embodiment of the utility model is a chain spanner, comprising: the handle is provided with external threads on the outer peripheral surface, the sleeve is internally provided with internal threads matched with the external threads, and the sleeve is sleeved on the handle through threads; one end of the first arc-shaped plate is connected with the handle, and the first arc-shaped plate is bent along the direction close to the handle; one end of each friction block is connected with the first arc-shaped plate, one side end face, away from the first arc-shaped plate, of each friction block is an arc-shaped face, and the friction blocks are arranged on the first arc-shaped plate at intervals; the chain assembly comprises a first chain, a second chain, a third chain, a second arc plate and a third arc plate, wherein the first chain is connected with the sleeve, the other end of the first chain is connected with one end of the second arc plate, the other end of the second arc plate is connected with one end of the second chain, the other end of the second chain is connected with one end of the third arc plate, one end of the third arc plate is connected with one end of the third chain, one end of the third chain is far away from the sleeve and is connected with one end of the first chain, and the second arc plate and the third arc plate are arranged at intervals relatively in the width direction of the handle.

The chain spanner of the embodiment of the utility model can avoid slipping and improve the disassembly efficiency.

In some embodiments, the chain wrench further comprises a raised member comprising a first protrusion, a second protrusion, and a third protrusion, the first protrusion being coupled to the first chain, the second protrusion being coupled to the second chain, and the third protrusion being coupled to the chain.

In some embodiments, the chain assembly further comprises a fourth arcuate plate and a fourth chain, one end of the fourth arcuate plate is connected to the second chain, the other end of the fourth arcuate plate is connected to the fourth chain, one end of the fourth chain is connected to the third arcuate plate, and the fourth arcuate plate and the first arcuate plate are arranged at opposite intervals in the length direction of the handle.

In some embodiments, the chain wrench further comprises a lock nut that is sleeved on the handle to limit the sleeve.

In some embodiments, the chain wrench further comprises a grip member removably coupled to an end of the handle remote from the first arcuate plate.

In some embodiments, the chain wrench further comprises a first connecting rope, one end of the first connecting rope is detachably connected with one end of the second arc-shaped plate adjacent to the first chain, and the other end of the first connecting rope is detachably connected with one end of the third arc-shaped plate adjacent to the second chain.

In some embodiments, the chain wrench further comprises a second connecting rope, one end of the second connecting rope is detachably connected with one end of the second arc-shaped plate adjacent to the second chain, and the other end of the second connecting rope is connected with one end of the third arc-shaped plate adjacent to the third chain.

In some embodiments, the handle is provided with a plurality of limiting holes, the plurality of limiting holes are arranged at intervals along the length direction of the handle, and the limiting holes penetrate through the handle.

In some embodiments, the chain wrench further comprises a distance sensor connected to an end of the handle adjacent to the first arcuate plate and a display connected to the distance sensor.

In some embodiments, the chain wrench has a plurality of chain assemblies spaced apart in a first direction that is orthogonal to a length direction of the handle and that is also orthogonal to a width direction of the handle.

Drawings

Fig. 1 is a schematic view of a chain wrench according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a second arcuate plate of an embodiment of the present utility model.

Fig. 3 is a schematic view of a first arcuate plate of an embodiment of the present utility model.

Reference numerals:

the handle 1, the limiting hole 11, the sleeve 2, the first arc 3, the friction block 4, the chain assembly 5, the first chain 51, the second chain 52, the third chain 53, the second arc 54, the third arc 55, the fourth arc 56, the fourth chain 57, the protruding part 6, the first protrusion 61, the second protrusion 62, the third protrusion 63, the first connecting rope 7, the second connecting rope 8, the screw rod 9, the nut 10, the lock nut 20 and the handle member 30.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

An embodiment of the utility model relates to a chain spanner, comprising: a handle 1, a sleeve 2, a plurality of friction blocks 4, a first arc-shaped plate 3 and a chain assembly 5,

the outer peripheral surface of the handle 1 is provided with external threads, internal threads matched with the external threads are arranged in the sleeve 2, the sleeve 2 is arranged on the handle 1 through a threaded sleeve, one end of the first arc plate 3 is connected with the handle 1, the first arc plate 3 is bent along the direction close to the handle 1, one ends of the friction blocks 4 are connected with the first arc plate 3, one side end surface of the friction blocks 4 far away from the first arc plate 3 is an arc surface, the friction blocks 4 are arranged on the first arc plate 3 at intervals, the chain assembly 5 comprises a first chain 51, a second chain 52 and a third chain 53, a second arc plate 54 and a third arc plate 55, the first chain 51 is connected with the sleeve 2, the other end of the first chain 51 is connected with one end of the second arc plate 54, the other end of the second arc plate 54 is connected with one end of the second chain 52, the other end of the second chain 52 is connected with one end of the third arc plate 55, one end of the third arc plate 55 is connected with one end of the third chain 53, one end of the third chain 53 is connected with one end of the sleeve 2 far away from the first chain 51, and the second arc plate 54 is arranged opposite to the opposite width of the third arc plate 55 on the opposite side of the handle 1.

Specifically, as shown in FIGS. 1 to 3, the longitudinal direction of the handle 1 is the up-down direction, the width direction of the handle 1 is the left-right direction,

the handle 1 extends along the up-down direction, the handle 1 is provided with external threads extending along the up-down direction, the sleeve 2 is sleeved on the handle 1, the sleeve 2 can rotate, or the handle 1 rotates to change the position of the sleeve 2 on the handle 1 along the up-down direction, the first arc plate 3 bends downwards, the first arc plate 3 extends along the left-right direction, the lower end of the first arc plate 3 is connected with the upper end of the handle 1, the upper end of the first arc plate 3 is connected with the friction blocks 4, namely, the arc surface of the upper end of the first arc plate 3 is connected with the friction blocks 4, the friction blocks 4 are arranged at intervals in the left-right direction, the friction blocks 4 extend along the up-down direction, the interval between the friction blocks 4 in the left-right direction is 5 mm-7 mm, so that the friction force between the friction blocks 4 and the nut 10 can be ensured to be improved, the phenomenon that the friction force is reduced due to the too small interval between the friction blocks 4 and the nut 10 is prevented from slipping when the friction blocks 4 are disassembled, the upper end surface of the friction blocks 4 is arc surface is further improved between the friction blocks 4 and the nut 10,

the lower end of the first chain 51 is pivoted to the left end of the sleeve 2, the upper end of the first chain 51 is pivoted to the lower end of the second arc plate 54, the second arc plate 54 extends in the up-down direction, the second arc plate 54 is bent leftwards, the upper end of the second arc plate 54 is pivoted to the left end of the second chain 52, the right end of the second chain 52 is pivoted to the upper end of the third arc plate 55, the lower end of the third chain 53 is pivoted to the upper end of the third chain 53, and the lower end of the third chain 53 is pivoted to the right end of the sleeve 2.

When the nut 10 is detached, the position of the sleeve 2 in the up-down direction is changed by rotating the handle 1, so that the chain assembly 5 is kept in contact with the nut 10, and the first arc plate 3 and the friction block 4 are connected with the nut 10, so that the nut 10 is locked and detached.

According to the chain spanner of the embodiment of the utility model, the friction force between the chain spanner and the dismounting nut 10 can be improved through the arrangement of the first arc-shaped plate 3, the second arc-shaped plate 54 and the third arc-shaped plate 55, so that slipping can be avoided, the dismounting efficiency is improved, the structural strength of the chain spanner can be improved through the arrangement of the first arc-shaped plate 3, the second arc-shaped plate 54 and the third arc-shaped plate 55, the dismounting of the nut 10 with larger torque by the chain spanner is facilitated, and the applicability of the chain spanner is improved. By providing a plurality of friction blocks 4 on the first arc plate 3, the friction between the chain spanner and the nut 10 can be increased. Avoid skidding when dismantling nut 10, and cooperate with first arc 3, second arc 54, third arc 55, further improve the frictional force between chain spanner and the nut 10, and then reduce the risk of skidding, improve stability and the security that chain spanner used.

It can be understood that the chain spanner further comprises a screw rod 9, the first arc-shaped plate 3 and the handle 1 are provided with thread grooves corresponding to the screw rod 9 along the up-down direction, the lower end of the screw rod 9 at least partially stretches into the thread grooves, the position of the screw rod 9 in the up-down direction is adjusted by rotating the screw rod 9, and then the screw rod 9 is abutted with the nut 10, so that the stability and the dismounting efficiency of the chain spanner are improved.

In some embodiments, the chain wrench further comprises a raised member 6, the raised member 6 comprising a first protrusion 61, a second protrusion 62 and a third protrusion 63, the first protrusion 61 being connected to the first chain 51, the second protrusion 62 being connected to the second chain 52, the third protrusion 63 being connected to the chain.

Specifically, as shown in fig. 1 to 3, the first protrusions 61, the second protrusions 62 and the third protrusions 63 are shaped like saw teeth, one end of the first protrusions 61 is connected to the first chain 51, one side of the first protrusions 61 adjacent to the nut 10 is saw-toothed, the first protrusions 61 are in contact with the nut 10, thereby improving friction between the first chain 51 and the nut 10, the number of the first protrusions 61 is plural, the plural first protrusions 61 are arranged at intervals in the up-down direction on the first chain 51,

one end of the second protrusion 62 is connected with the second chain 52, one side of the second protrusion 62 adjacent to the nut 10 is provided with saw teeth, the second protrusion 62 is contacted with the nut 10, further, the friction force between the second chain 52 and the nut 10 is improved, the number of the second protrusions 62 is a plurality, a plurality of second protrusions 62 are arranged on the second chain 52 at intervals along the left-right direction,

one end of the third protrusion 63 is connected with the third chain 53, one side of the third protrusion 63 adjacent to the nut 10 is provided with saw teeth, the third protrusion 63 is contacted with the nut 10, further, the friction force between the third chain 53 and the nut 10 is improved, a plurality of third protrusions 63 are arranged on the third chain 53 at intervals along the up-down direction,

by providing the protruding member 6, friction between the first chain 51, the second chain 52, and the third chain 53 and the nut 10 can be improved, slipping in the disassembly process can be avoided, and the disassembly efficiency of the chain spanner in use can be improved.

Further, the chain assembly 5 further includes a fourth arc plate 56 and a fourth chain 57, the fourth arc plate 56 extends in the left-right direction, the fourth arc plate 56 is bent upward, the left end of the fourth arc plate 56 is connected to the upper end of the second chain 52, the right end of the fourth arc plate 56 is connected to the upper end of the fourth chain 57, the lower end of the fourth chain 57 is connected to the upper end of the third arc plate 55, and the fourth arc plate 56 is arranged at an interval relative to the first arc plate 3 in the up-down direction. Through setting up fourth arc 56, when dismantling nut 10, can make fourth arc 56 and nut 10 contact, can further improve the frictional force between chain assembly 5 and the nut 10, and then avoid skidding, improve the dismantlement efficiency of chain spanner, it can be understood that the lower terminal surface of fourth arc 56 can also be equipped with the antiskid line, and the shape of antiskid line is cross, further improves the frictional force between chain spanner and the nut 10, avoids taking place to skid at the in-process that nut 10 dismantled, improves dismantlement efficiency.

Further, the second arc plate 54, the third arc plate 55 and the fourth arc plate 56 may be made of plastic, rubber or fiber, or a composite material of plastic, rubber or fiber, and may have a certain deformation when the strength of the material is met, for example, when the nut 10 is locked, the second arc plate 54 deforms rightward and increases the contact area between the second arc plate 54 and the nut 10, so as to increase the friction force between the second arc plate 54 and the nut 10, and correspondingly, the third arc plate 55 and the fourth arc plate 56 also deform to increase the contact area between the chain wrench and the nut 10, so as to increase the friction force between the contact area between the bar wrench and the nut 10, avoid the slippage of the nut 10 in the disassembly process, and improve the stability and safety of the chain wrench when in use.

In some embodiments, the chain wrench further comprises a lock nut 20, wherein the lock nut 20 is sleeved on the handle 1 to limit the sleeve 2.

Specifically, as shown in fig. 1 to 3, the lock nut 20 is sleeved on the handle 1 through threads, so that the lock nut 20 moves in the up-down direction to lock the sleeve 2, loosening or displacement of the sleeve 2 is avoided, and stability and safety of the chain spanner in use are improved.

Further, the chain wrench further comprises a grip member 30, and the grip member 30 is detachably connected to the lower end of the handle 1. Furthermore, an operator can rotate the handle 1 through the handle piece 30, so that the convenience of the handle 1 in the use process is improved, the handle piece 30 is detachably connected with the handle 1, different sleeves 2 can be conveniently replaced, and the maintenance cost is reduced.

In some embodiments, the chain wrench further comprises a first connecting rope 7, one end of the first connecting rope 7 is detachably connected to an end of the second arc plate 54 adjacent to the first chain 51, and the other end of the first connecting rope 7 is detachably connected to an end of the third arc plate 55 adjacent to the second chain 52.

Specifically, as shown in fig. 1 to 3, the first connecting rope 7 may be a wire rope, the left end of the first connecting rope 7 is detachably connected to the lower end of the second arc plate 54, the right end of the first connecting rope 7 is detachably connected to the lower end of the third arc plate 55, the first connecting rope 7 is further wound around the outer circumferential surface of the nut 10 to improve the friction between the chain wrench and the nut 10, and the first connecting rope 7 is adapted to connect the second arc plate 54 to the third arc plate 55 to improve the stability and safety when being disassembled.

Further, the chain wrench further comprises a second connecting rope 8, the left end of the second connecting rope 8 is detachably connected with the upper end of the second arc-shaped plate 54, and the right end of the second connecting rope 8 is connected with the lower end of the third arc-shaped plate 55. The second connecting rope 8 is further wound on the outer circumferential surface of the nut 10 to improve the friction between the chain wrench and the nut 10, and the second connecting rope 8 is adapted to connect the second arc plate 54 with the third arc plate 55 to improve the stability and safety in disassembly.

In some embodiments, the handle 1 is provided with a plurality of limiting holes 11, the plurality of limiting holes 11 are arranged at intervals along the length direction of the handle 1, and the limiting holes 11 penetrate through the handle 1.

Specifically, as shown in fig. 1 to 3, the limiting hole 11 penetrates through the handle 1, and it is easy to understand that the locking nut 20 can be limited or fixed by extending a bolt into the limiting hole 11, so that the stability and safety of the chain spanner during use are improved.

Further, the chain spanner also comprises a distance sensor and a display screen, wherein the distance sensor is connected with the upper end of the handle 1, and the display screen is connected with the distance sensor. The distance sensor is suitable for measuring the distance between the object and the handle 1 within a certain distance above the handle 1, for example, in the case of narrow working environment, the size of the object can be measured through the distance sensor, so that the operator can evaluate the operating environment or the operating object conveniently, and the safety and stability during operation are improved.

Further, the number of the chain assemblies 5 is plural, the plural chain assemblies 5 are arranged at intervals in the first direction orthogonal to the longitudinal direction of the handle 1, and the first direction is also orthogonal to the width direction of the handle 1. It can be understood that the first direction is the fore-and-aft direction, and a plurality of chain components 5 are arranged at intervals in the fore-and-aft direction, through setting up a plurality of chain components 5, improve the frictional force between chain spanner and the nut 10, be convenient for dismantle large-scale nut 10, slip when avoiding dismantling improves stability and the security that chain spanner used.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A chain wrench, comprising:

the handle is provided with external threads on the outer peripheral surface, the sleeve is internally provided with internal threads matched with the external threads, and the sleeve is sleeved on the handle through threads;

one end of the first arc-shaped plate is connected with the handle, and the first arc-shaped plate is bent along the direction close to the handle;

one end of each friction block is connected with the first arc-shaped plate, one side end face, away from the first arc-shaped plate, of each friction block is an arc-shaped face, and the friction blocks are arranged on the first arc-shaped plate at intervals;

the chain assembly comprises a first chain, a second chain, a third chain, a second arc plate and a third arc plate, wherein the first chain is connected with the sleeve, the other end of the first chain is connected with one end of the second arc plate, the other end of the second arc plate is connected with one end of the second chain, the other end of the second chain is connected with one end of the third arc plate, one end of the third arc plate is connected with one end of the third chain, one end of the third chain is far away from the sleeve and is connected with one end of the first chain, and the second arc plate and the third arc plate are arranged at intervals relatively in the width direction of the handle.

2. The chain spanner of claim 1, further comprising a raised member comprising a first protrusion, a second protrusion, and a third protrusion, wherein the first protrusion is coupled to the first chain, the second protrusion is coupled to the second chain, and the third protrusion is coupled to the chain.

3. The chain spanner according to claim 2, wherein the chain assembly further comprises a fourth arcuate plate and a fourth chain, one end of the fourth arcuate plate is connected to the second chain, the other end of the fourth arcuate plate is connected to the fourth chain, one end of the fourth chain is connected to the third arcuate plate, and the fourth arcuate plate and the first arcuate plate are arranged at opposite intervals in the length direction of the handle.

4. A chain spanner according to claim 3, further comprising a lock nut which is sleeved on the handle to limit the sleeve.

5. The chain spanner of claim 4 further comprising a grip member removably connected to an end of the handle remote from the first arcuate plate.

6. The chain spanner of claim 5 further comprising a first connecting rope having one end detachably coupled to an end of the second arcuate plate adjacent the first chain and the other end detachably coupled to an end of the third arcuate plate adjacent the second chain.

7. The chain spanner of claim 6 further comprising a second connecting rope having one end detachably coupled to an end of the second arcuate plate adjacent the second chain and the other end detachably coupled to an end of the third arcuate plate adjacent the third chain.

8. The chain spanner according to claim 7, wherein the handle is provided with a plurality of limiting holes, the plurality of limiting holes are arranged at intervals along the length direction of the handle, and the limiting holes penetrate through the handle.

9. The chain spanner of claim 8, comprising a distance sensor coupled to an end of the handle adjacent the first arcuate plate and a display coupled to the distance sensor.

10. The chain spanner of claim 9 wherein the number of chain assemblies is a plurality, the plurality of chain assemblies being spaced apart in a first direction, the first direction being orthogonal to the length direction of the handle and the first direction also being orthogonal to the width direction of the handle.