CN211615412U

CN211615412U - Telescopic pipe wrench handle

Info

Publication number: CN211615412U
Application number: CN201922396510.6U
Authority: CN
Inventors: 张理; 宋虎
Original assignee: Zhangjiagang Zhongtianda Tools Co ltd
Current assignee: Zhangjiagang Zhongtianda Tools Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-02
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a telescopic pipe wrench handle, which comprises a wrench handle, wherein the wrench handle consists of a fixed wrench head arranged at the front end of the wrench handle in the length direction and a telescopic rod connected at the rear end of the fixed wrench head; the locking structure comprises two fixing plates, a cam clamping rod, a pin shaft a and a pressing block, wherein the two fixing plates are symmetrically arranged above the sleeve, the cam clamping rod is fixed between the two fixing plates after the pin shaft a penetrates through the two fixing plates and a cam of the cam clamping rod, a hole with the shape corresponding to the pressing block is formed in the position, corresponding to the cam, of the sleeve, the pressing block is embedded in the hole, when the clamping rod of the cam clamping rod is parallel to the sleeve, the radius of an arc of the cam located at the lowest part is largest, and the upper surface and the lower surface of the pressing block are respectively abutted to the cam; the limiting structure limits the extension rod to move in the sleeve. The length of the clamp handle is adjustable, and the extension rod cannot fall out of the sleeve.

Description

Telescopic pipe wrench handle

Technical Field

The utility model belongs to the technical field of hardware and tools, especially, relate to a flexible pipe vice handle.

Background

The pipe wrench is used for clamping and rotating steel pipes, can be divided into various types according to bearing capacity, weight, styles and the like, and is widely used for mounting petroleum pipelines and civil pipelines. The working principle of the pipe wrench is that the clamping force is converted into the torsion force, and the pipe wrench can clamp more tightly when the force in the twisting direction is larger.

The pipe tongs in the market at present are different in size and can be used for twisting pipes of different sizes. However, the length of the handle of the pliers is also fixed, and the pliers cannot be used in a narrow space. Meanwhile, when the pipe needs to be screwed more tightly, a longer power arm is required to save labor, and the pipe wrench needs to be replaced, so that the pipe wrench is inconvenient.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved is as follows: to current pipe vice handle length fixed unchangeable, different environment or need be screwed up when more tightly just will change different pipe vice, the utility model provides a flexible pipe vice handle, this pincers handle are extending structure, can satisfy narrow and small space's use to the pipe of screwing up that the pincers handle of extension can be more laborsaving.

The technical scheme is as follows: a telescopic pipe wrench handle comprises a handle, wherein the handle consists of a fixed wrench head arranged at the front end of the handle in the length direction and a telescopic rod connected to the rear end of the fixed wrench head; the locking structure comprises two fixing plates, a cam clamping rod, a pin shaft a and a pressing block, wherein the two fixing plates are symmetrically arranged above the sleeve, the cam clamping rod is fixed between the two fixing plates after the pin shaft a penetrates through the two fixing plates and a cam of the cam clamping rod, a hole with the shape corresponding to the pressing block is formed in the position, corresponding to the cam, of the sleeve, the pressing block is embedded in the hole, when the clamping rod of the cam clamping rod is parallel to the sleeve, the radius of an arc of the cam located at the lowermost part is largest, and the upper surface and the lower surface of the pressing block are respectively abutted to the cam and; the limiting structure limits the extension rod to move in the sleeve.

The limiting structure is a convex ring arranged at the front end of the extension rod, the outer diameter of the convex ring is larger than that of the extension rod, and the difference between the outer diameters of the convex ring and the extension rod is larger than the difference between the maximum radius and the minimum radius of the arc of the cam.

The limiting structure comprises a through hole arranged at the front end of the extension rod, two strip-shaped holes parallel to the extension rod and symmetrically arranged on the sleeve, and a pin b, wherein the pin b is arranged in the through hole in a penetrating manner, and two ends of the pin b are respectively exposed from the two strip-shaped holes.

The limit structure comprises a through hole arranged at the front end of the extension rod, guide rail grooves which are parallel to the extension rod and symmetrically arranged on the inner surface of the sleeve, two inserting holes which are arranged on the sleeve and correspond to the rear ends of the two guide rail grooves, a pin shaft c and two bolts, wherein the diameter of each inserting hole is not smaller than that of the through hole, the pin shaft c is arranged in the through hole in a penetrating mode, two ends of the pin shaft c are located in the guide rail grooves respectively, and the two bolts are arranged in a threaded fit mode in the two inserting holes respectively.

The surface of the pressing block, which is contacted with the extension rod, is an arc surface matched with the outer circumferential surface of the extension rod.

The rear part of the extension rod is sleeved with a grab handle.

The grab handle is provided with a diamond-shaped groove.

The rear end of the extension rod is provided with a hanging hole which also penetrates through the grab handle.

Has the advantages that: the utility model provides a flexible pipe vice handle has following beneficial effect: the clamp handle is of a telescopic structure, so that the use in a narrow space can be met, and the pipe can be screwed down by the stretched clamp handle in a labor-saving manner; meanwhile, the telescopic structure is simple and convenient to use.

Drawings

FIG. 1 is a plan view of a pipe wrench shank according to embodiment 1.

3 fig. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 the 3 plane 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3

FIG. 3 is a front view of the pipe wrench of embodiment 1 after its shank has been contracted.

FIG. 4 is a plan view of a pipe wrench shank according to embodiment 2.

Figure 5 is a cross-sectional view taken along plane B-B of figure 4 rotated 90 deg. clockwise.

FIG. 6 is a front view of the pipe wrench of embodiment 2 after the shank has been contracted.

FIG. 7 is a front view of the pipe wrench of embodiment 3 after the shank has been contracted.

Fig. 8 is a cross-sectional view taken along plane C-C of fig. 7.

Fig. 9 is a schematic view of an extension pole in

embodiments

2 and 3.

In the figure: 1. a forceps handle; 2. fixing the binding clip; 3. a telescopic rod; 4. a sleeve; 41. an aperture; 42. a strip-shaped hole; 43. a guide rail groove; 44. an insertion hole; 45. a bolt; 5. an extension pole; 51. a convex ring; 52. a pin shaft b; 53. hanging holes; 54. a through hole; 55. a pin shaft c; 61. a fixing plate; 62. a cam clamping lever; 621. a cam; 622. a clamping lever; 63. a pin shaft a; 64. briquetting; 7. A handle; 71. and (4) a groove.

Detailed Description

The following will specifically explain the handle of the telescopic pipe wrench of the present invention with reference to the attached drawings.

Example 1

As shown in fig. 1, 2 and 3, a telescopic pipe wrench handle comprises a handle 1, wherein the handle 1 is composed of a fixed wrench head 2 arranged at the front end of the handle 1 in the length direction and a telescopic rod 3 connected to the rear end of the fixed wrench head 2, the telescopic rod 3 comprises a sleeve 4, an extension rod 5, a locking structure and a limiting structure, the front end of the sleeve 4 is connected with the fixed wrench head 2, and the front end of the extension rod 5 is inserted from the rear end of the sleeve 4; the locking structure comprises two fixing plates 61, a cam clamping rod 62, a pin shaft a63 and a pressing block 64 which are symmetrically arranged above the sleeve 4, the pin shaft a63 penetrates through the two fixing plates 61 and the cam 621 of the cam clamping rod 62 to fix the cam clamping rod 62 between the two fixing plates 61, a hole 41 with the shape corresponding to the pressing block 64 is arranged at the position, corresponding to the cam 621, on the sleeve 4, the pressing block 64 is embedded in the hole 41, when the clamping rod 622 of the cam clamping rod 62 is parallel to the sleeve 4, the arc radius of the cam 621 located at the lowest part is largest, and the upper surface and the lower surface of the pressing block 64 are respectively abutted against the cam 621 and the extension rod 5; the limiting structure comprises a convex ring 51 arranged at the front end of the extension rod 5, the outer diameter of the convex ring 51 is larger than that of the extension rod 5, the difference between the outer diameters of the convex ring 51 and the extension rod 5 is larger than the difference between the maximum radius and the minimum radius of the arc of the cam 621, and the limiting structure limits the extension rod 5 to move in the sleeve 4.

The two fixing plates 61 can be integrally formed with the sleeve 4, so that the overall structure is simpler.

When the length of the clamp handle is fixed, the clamping rod 622 of the locking structure is parallel to the sleeve 4, at the moment, the arc surface with the largest radius of the cam 621 abuts against the upper surface of the pressing block 64, the pressing block 64 is pressed on the extension rod 5, the pressing block 64 is tightly pressed between the cam 621 and the extension rod 5, the pressing block 64 and the extension rod 5 cannot be relatively positioned, and the length of the clamp handle is fixed; when the clamp handle needs to be lengthened or shortened, the clamping rod 622 is rotated, the cam 621 rotates along with the clamping rod 622, a gap is formed between the cam 621 and the pressing block 64 at the moment, the pressing block 64 and the extension rod 5 are loosened, and the extension rod 5 can be pulled to realize the extension and contraction of the clamp handle; when the clamp rod is extended or contracted to a fixed length, the clamp rod 622 is rotated to be parallel to the sleeve 4, the clamp rod can return to a locked state, the length of the clamp handle is fixed, and the clamp can be used continuously.

The limiting structure is the convex ring 51, the structure is simple, the outer diameter difference between the convex ring 51 and the extension rod 5 is larger than the difference between the maximum radius and the minimum radius of the arc of the cam 621, at the moment, no matter how the cam 621 rotates, the movable distance of the pressing block 64 is always smaller than the outer diameter difference between the convex ring 51 and the extension rod 5, when the extension rod 5 is pulled to the longest, the convex ring 51 is abutted to the pressing block 64, and the extension rod 5 cannot be pulled out of the sleeve 4.

Preferably, the surface of the pressing block 64 contacting the extension rod 5 is a circular arc surface matching with the outer circumferential surface of the extension rod 5. The setting of arc surface makes briquetting 64 and extension rod 5 surface better laminating, and what pressed between briquetting 64 and the extension rod 5 is tighter.

The shortest height of the pressing piece 64 is greater than the difference between the outer diameters of the collar 51 and the extension rod 5, so that the pressing piece 64 does not fall into the gap between the sleeve 4 and the extension rod 5.

Preferably, the rear part of the extension rod 5 is sleeved with a grab handle 7. The handle 7 and the extension rod 5 may also be integrally formed, that is, the handle 7 is a protrusion at the rear of the extension rod 5. The arrangement of the grab handle 7 is convenient for taking the extension rod 5.

Preferably, the grip 7 is provided with a diamond-shaped groove 71. The diamond-shaped grooves 71 have an anti-slip function.

Preferably, the rear end of the extension rod 5 is provided with a hanging hole 53, and the hanging hole 53 also penetrates through the handle 7. The hanging hole 53 is convenient for the containing of the pipe wrench, and the pipe wrench can be hung on the hook.

Example 2

The difference between the embodiment 2 and the embodiment 1 is that the limiting structure is different, as shown in fig. 4, 5, 6, and 9, the limiting structure includes a through hole 54 disposed at the front end of the extension rod 5, two strip-shaped holes 42 parallel to the extension rod 5 and symmetrically disposed on the sleeve 4, and a pin b52, wherein the pin b52 is inserted into the through hole 54, and two ends of the pin are respectively exposed from the two strip-shaped holes 42.

In the actual installation process, wear to establish round pin axle b52 on extension rod 5, the both ends of round pin axle b52 are exposed from two bar holes 42 respectively, and such setting makes extension rod 5 when being pulled, and round pin axle b52 can only slide in bar hole 42 all the time, and extension rod 5 can not be pulled out sleeve pipe 4. And the two strip-shaped holes 42 are matched with the pin shafts b52 to ensure that the position of the extension rod 5 is more stable.

The strip-shaped hole 42 of the limiting structure can be only one, the pin shaft b52 is arranged on one side of the extension rod 5, and the pin shaft b52 is exposed out of the strip-shaped hole 42.

Example 3

The difference between the embodiment 3 and the embodiment 1 is that the limiting structure is different, as shown in fig. 7, 8 and 9, the limiting structure includes a through hole 54 disposed at the front end of the extension rod 5, guide rail grooves 43 parallel to the extension rod 5 and symmetrically disposed on the inner surface of the sleeve 4, two insertion holes 44 disposed at positions corresponding to the rear ends of the two guide rail grooves 43 on the sleeve 4, a pin shaft c55, and two bolts 45, the diameter of the insertion hole 44 is not less than that of the through hole 54, the pin shaft c55 is disposed in the through hole 54 and its two ends are respectively located in the guide rail grooves 43, and the two bolts 45 are respectively disposed in cooperation with the threads in the two insertion holes 44.

In the actual mounting process, the through hole 54 is aligned with the two insertion holes 44, the pin shaft c55 is inserted from the insertion hole 44 and then penetrates through the through hole 54, and then the two bolts 45 are screwed into the insertion holes 44 to cover the insertion holes 44. Thus, the two ends of the pin c55 fall into the guide rail groove 43, the pin c55 can only slide in the guide rail groove 43, and the extension rod 5 cannot be pulled out of the sleeve 4.

The embodiments of the present invention have been described in detail, and to those skilled in the art, according to the idea of the embodiments of the present invention, there are changes in the specific implementation and application range, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a flexible pipe tongs handle, includes tongs handle (1), its characterized in that: the pliers handle (1) consists of a fixed pliers head (2) arranged at the front end of the pliers handle (1) in the length direction and a telescopic rod (3) connected to the rear end of the fixed pliers head (2), wherein the telescopic rod (3) comprises a sleeve (4), an extension rod (5), a locking structure and a limiting structure, the front end of the sleeve (4) is connected with the fixed pliers head (2), and the front end of the extension rod (5) is inserted from the rear end of the sleeve (4); the locking structure comprises two fixing plates (61) symmetrically arranged above the sleeve (4), a cam clamping rod (62), a pin shaft a (63) and a pressing block (64), the pin shaft a (63) penetrates through the two fixing plates (61) and a cam (621) of the cam clamping rod (62) and then fixes the cam clamping rod (62) between the two fixing plates (61), a hole (41) with a shape corresponding to that of the pressing block (64) is formed in the position, corresponding to the cam (621), on the sleeve (4), the pressing block (64) is embedded in the hole (41), when the clamping rod (622) of the cam clamping rod (62) is parallel to the sleeve (4), the arc radius of the cam (621) located at the lowest part is largest, and the upper surface and the lower surface of the pressing block (64) are respectively abutted to the cam (621) and the extension rod (5); the limiting structure limits the extension rod (5) to move in the sleeve (4).

2. A telescopic pipe wrench handle according to claim 1, wherein: the limiting structure is a convex ring (51) arranged at the front end of the extension rod (5), the outer diameter of the convex ring (51) is larger than that of the extension rod (5), and the outer diameter difference between the convex ring (51) and the extension rod (5) is larger than the difference between the maximum radius and the minimum radius of the arc of the cam (621).

3. A telescopic pipe wrench handle according to claim 1, wherein: limiting structure is including setting up at through-hole (54) of extension rod (5) front end, being on a parallel with extension rod (5) and two bar holes (42) and round pin axle b (52) of symmetry setting on sleeve pipe (4), and round pin axle b (52) wear to establish in through-hole (54) and its both ends expose from two bar holes (42) respectively.

4. A telescopic pipe wrench handle according to claim 1, wherein: the limiting structure comprises a through hole (54) formed in the front end of the extension rod (5), guide rail grooves (43) which are parallel to the extension rod (5) and symmetrically formed in the inner surface of the sleeve (4), two insertion holes (44) which are formed in the sleeve (4) and correspond to the rear ends of the two guide rail grooves (43), a pin shaft c (55) and two bolts (45), the diameter of each insertion hole (44) is not smaller than that of the through hole (54), the pin shaft c (55) penetrates through the through hole (54) and the two ends of the pin shaft c (55) are located in the guide rail grooves (43) respectively, and the two bolts (45) are arranged in a threaded fit mode in the two insertion holes (44) respectively.

5. A telescopic pipe wrench handle according to claim 1, wherein: the surface of the pressing block (64) contacting with the extension rod (5) is an arc surface matched with the outer circumferential surface of the extension rod (5).

6. A telescopic pipe wrench handle according to claim 1, wherein: the rear part of the extension rod (5) is sleeved with a grab handle (7).

7. A telescopic pipe wrench handle according to claim 6, wherein: the grab handle (7) is provided with a diamond-shaped groove (71).

8. A telescopic pipe wrench handle according to claim 7, wherein: the rear end of the extension rod (5) is provided with a hanging hole (53), and the hanging hole (53) also penetrates through the grab handle (7).