CN216543029U - Pipe pressing pliers and pliers head thereof - Google Patents

Abstract

The utility model belongs to the technical field of pipeline crimping tools, and particularly relates to a pipe crimping pliers and a pliers head thereof. Press pipe pincers to include the binding clip, the binding clip includes: the left clamp arm and the right clamp arm are respectively provided with a stress part, a rotating part and a clamp opening part, and the two clamp opening parts form a clamp opening for pressing the pipe together; the rotating shaft is arranged between the rotating part of the left clamp arm and the rotating part of the right clamp arm; the connecting assembly is used for connecting the left clamp arm and the right clamp arm; the upper end and the lower end of the side wall of each rotating part respectively extend out of a positioning edge, and each positioning edge is provided with an arc-shaped rotating groove; the middle part of pivot has the location bulge loop, the both ends of pivot set up respectively the arc rotates the inslot, just the location bulge loop location is between two upper and lower location borders to realize the pivot and control the axial positioning between the tong arm, prevented the slip of pivot on the arc rotates the groove, improved the stability of structure, also improved the reliability and the assembly efficiency of assembly simultaneously.

Description

Pipe pressing pliers and pliers head thereof

Technical Field

The utility model belongs to the technical field of pipeline crimping tools, and particularly relates to a pipe crimping pliers and a pliers head thereof.

Background

The pipe pressing tongs are a clamping and pressing tool for pipeline connection, mainly comprise a hydraulic execution system and a tong head, and the tong head is driven to be closed under the action of the hydraulic execution system, so that the clamping and pressing of two pipe fittings are realized, and the pipe pressing tongs have the characteristics of convenience in operation, high pipeline installation efficiency and the like.

In pipe connections, pipe tightness is very important. In the pipe pressing pliers, the sealing performance of the joint of the pipeline is directly affected by the quality of the pliers head. The binding clip generally comprises a left binding clip, a right binding clip, a rotating shaft and a connecting assembly, wherein the connecting assembly is used for assembling the other three components together, so that the left binding clip and the right binding clip can rotate around the rotating shaft, and the binding clip is tightened or opened.

The general pivot does not have locate function, mainly relies on coupling assembling to carry out the axial of left tong arm and right tong arm spacing, and coupling assembling's precision is limited, leads to left tong arm and right tong arm can produce little skew when the pipeline crimping for the jaw of controlling the tong arm misplaces each other, influences the sealing performance of pipe fitting junction.

Secondly, the rotating shaft has no positioning function, and is easy to slide off during installation, so that the assembly efficiency is low.

Disclosure of Invention

The utility model aims to provide a pair of pressure pipe tongs and a tong head thereof, which have the advantages of simple structure, convenience in installation and high precision.

The purpose of the utility model is realized as follows:

a binding clip, comprising:

the left clamp arm and the right clamp arm are respectively provided with a stress part, a rotating part and a clamp opening part, and the two clamp opening parts form a clamp opening for pressing the pipe together;

the rotating shaft is arranged between the rotating part of the left clamp arm and the rotating part of the right clamp arm; and

the connecting assembly is used for connecting the left clamp arm and the right clamp arm;

when the stress part is stressed, the left clamp arm and the right clamp arm rotate around the rotating shaft to realize the tightening or the opening of the clamp jaws;

the upper end and the lower end of the side wall of each rotating part respectively extend out of a positioning edge, and each positioning edge is provided with an arc-shaped rotating groove;

the middle part of pivot has the location bulge loop, the both ends of pivot set up respectively the arc rotates the inslot, just the location bulge loop location is between two upper and lower location borders.

Preferably, the upper and lower positioning edges extend towards one side in the same direction and form a mounting groove between the upper and lower positioning edges; the positioning convex ring is sleeved with a torsion spring, and the first butt joint end and the second butt joint end of the torsion spring are both bent and butt jointed in the corresponding mounting grooves.

Preferably, the left and right clamp arms are symmetrically arranged.

Preferably, the force receiving portion, the rotating portion and the jaw portion are integrally formed.

Preferably, the rotating parts of the left clamp arm and the right clamp arm are both provided with first pin holes;

the connecting assembly includes:

the two pins are movably arranged in the corresponding first pin holes in a penetrating way respectively;

the upper connecting plate is positioned above the left clamp arm and the right clamp arm and is connected with the first ends of the two pins; and

and the lower connecting plate is positioned below the left clamp arm and the right clamp arm and is connected with the second ends of the two pins.

Preferably, a flange is arranged at the first end of the pin, a clamp spring groove is formed in the second end of the pin, and a clamp spring used for limiting is arranged in the clamp spring groove.

Preferably, the upper connecting plate and the lower connecting plate are correspondingly provided with mounting holes.

A pressure pipe pliers comprises the pliers head.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

1. two ends of the rotating shaft are respectively arranged in the arc-shaped rotating groove, and the positioning convex ring is positioned between the upper positioning edge and the lower positioning edge. Thereby realize the axial positioning between pivot and the left and right tong arm, prevented that the pivot from rotating the slip on the groove in the arc, improved the stability of structure, also improved the reliability and the assembly efficiency of assembly simultaneously.

2. According to the utility model, the first abutting end and the second abutting end of the torsion spring are bent and abutted in the corresponding mounting grooves, so that the contact area is increased, and the service life of the torsion spring is ensured.

Drawings

FIG. 1 is a schematic structural view of a pipe crimping tool according to the present invention.

Fig. 2 is a schematic structural view of the binding clip of the present invention.

Figure 3 is a cross-sectional view of the binding clip of the present invention.

Figure 4 is a schematic view of the binding clip of the present invention with the attachment assembly removed.

Figure 5 is an exploded view of the binding clip of the present invention.

The reference numerals in the figures denote the meanings:

1-left tong arm; 2-right clamp arm; 3-a rotating shaft; 4-torsion spring; 5-a connecting assembly;

11-a force-receiving portion; 111-roller guide surfaces; 112-manual pressing surface; 12-a rotating part; 121-locating the edge; 122-arc-shaped rotating groove; 123-mounting grooves; 124-first pin hole; 13-a jaw part;

31-positioning convex ring;

41-a first abutment end; 42-a second abutment end;

51-a pin; 511-a rib; 512-jump ring groove; 52-upper connecting plate; 521-mounting holes; 522-a second pin hole; 53-lower connecting plate; 54-a clamp spring;

100-binding clip; 101-a pipe crimping pliers body; 102-connecting pins.

Detailed Description

The utility model is further described below with reference to specific examples:

as shown in fig. 1, a crimping tong for crimping pipe fittings includes a tong body 101, a tong head 100, and a connecting pin 102 connecting the two.

As shown in fig. 2 to 5, the binding clip includes a left binding arm 1, a right binding arm 2, a rotating shaft 3 and a connecting component 5.

The left clamp arm 1 and the right clamp arm 2 are symmetrically arranged and have basically the same structure. Specifically, each of the left and right clamp arms 1 and 2 has a force receiving portion 11, a rotating portion 12, and a jaw portion 13 which are integrally formed, and the two jaw portions 13 together form a jaw for pressing a pipe. The upper and lower ends of the side wall of each rotating part 12 extend out of a positioning edge 121, and each positioning edge 121 is provided with an arc-shaped rotating groove 122. The upper and lower positioning edges 121 extend to the same side and form a mounting groove 123 therebetween for mounting the torsion spring 4. In addition, the rotating portions 12 of the left and right clamp arms 1 and 2 are each provided with a first pin hole 124 for installing the pin 51.

The rotating shaft 3 is arranged between the rotating part 12 of the left clamp arm 1 and the rotating part 12 of the right clamp arm 2, specifically, a positioning convex ring 31 is arranged in the middle of the rotating shaft 3, and two ends of the positioning convex ring 31 form positioning surfaces.

Two ends of the rotating shaft 3 are respectively arranged in the rotating positions formed by the two corresponding arc-shaped rotating grooves 122, that is, the upper end of the rotating shaft 3 is arranged in the rotating positions formed by the arc-shaped rotating grooves 122 above the left tong arm 1 and the right tong arm 2; the lower end of the rotating shaft 3 is arranged in a rotating position formed by an arc-shaped rotating groove 122 below the left tong arm 1 and the right tong arm 2.

The positioning convex ring 31 is positioned between the upper positioning edge 121 and the lower positioning edge 121. Namely, the positioning surface above the positioning convex ring 31 is disposed inside the positioning edge 121 above the left and right clamp arms 1 and 2, and the positioning surface below the positioning convex ring 31 is disposed inside the positioning edge 121 below the left and right clamp arms 1 and 2. Thereby realize the axial positioning between pivot 3 and the left and right tong arm, prevented that pivot 3 from rotating the slip on groove 122 in the arc, improved the stability of structure, also improved the reliability and the assembly efficiency of assembly simultaneously.

Preferably, the positioning convex ring 31 is sleeved with a torsion spring 4 for automatically returning and closing the jaw, and the first abutting end 41 and the second abutting end 42 of the torsion spring 4 are both bent and abutted in the corresponding mounting grooves 123. Specifically, first butt end 41 and second butt end 42 are the splayed, and the angle of buckling is 90 degrees to the laminating is in the bottom of the mounting groove 123 that corresponds, is favorable to increasing area of contact, guarantees the life of torsional spring.

The connecting assembly 5 is used for connecting the left clamp arm 1 and the right clamp arm 2 and comprises two pins 51, an upper connecting plate 52, a lower connecting plate 53 and two clamp springs 54.

The two pins 51 are movably inserted into the corresponding first pin holes 124 respectively. The upper connecting plate 52 has two second pin holes 522 located above the left and right jawarms 1, 2 and connecting the first ends of the two pins 51. The lower connecting plate 53 has the same structure as the upper connecting plate 52, is positioned below the left and right clamp arms 1 and 2, and is connected with the second ends of the two pins 51.

Specifically, a first end of the pin 51 is provided with a rib 511, a second end of the pin 51 is provided with a clamp spring groove 512, and the clamp spring groove 512 is used for installing the clamp spring 54. The two pins 51 are respectively and sequentially arranged in the second pin hole 522 of the upper connecting plate 52, the first pin hole 124 and the second pin hole 522 of the lower connecting plate 53, and are limited by the clamp spring 54.

In addition, the upper connecting plate 52 and the lower connecting plate 53 are respectively provided with a corresponding mounting hole 521, a connecting pin 102 is arranged in the mounting hole 521, and the tong head 100 is mounted on the pipe wrench main body 101 through the connecting pin 102.

Preferably, the inner side surface of the stress part 11 is provided with a roller guide surface 111 for connecting a roller of the pipe crimping pliers main body 101; the outer side surface of the pipe fitting is provided with a manual pressing surface 112 for manually pressing to open the jaw and clamp and disassemble the pipe fitting.

In this embodiment, when the roller of the main body 101 of the pliers is extended, the force-bearing part 11 is forced to expand, and the left pliers arm 1 and the right pliers arm 2 rotate around the rotating shaft 3 to tighten or loosen the pliers jaws.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes made according to the structure, shape and principle of the utility model shall be covered by the protection scope of the utility model.

Claims (8)

1. A binding clip, comprising:

the pipe pressing device comprises a left clamp arm (1) and a right clamp arm (2), wherein the left clamp arm and the right clamp arm are respectively provided with a stress part (11), a rotating part (12) and a clamp opening part (13), and the two clamp opening parts (13) form a clamp opening for pressing a pipe together;

a rotating shaft (3) arranged between the rotating part (12) of the left clamp arm (1) and the rotating part (12) of the right clamp arm (2); and

the connecting assembly (5) is used for connecting the left clamp arm (1) and the right clamp arm (2);

when the stress part (11) is stressed, the left forceps arm (1) and the right forceps arm (2) rotate around the rotating shaft (3) to realize the tightening or the opening of the forceps jaws;

positioning edges (121) extend from the upper end and the lower end of the side wall of each rotating part (12), and an arc-shaped rotating groove (122) is formed in each positioning edge (121);

the middle part of pivot (3) has location bulge loop (31), the both ends of pivot (3) set up respectively in arc rotates groove (122), just location bulge loop (31) location is between two upper and lower location border (121).

2. The binding clip of claim 1, wherein: the upper positioning edge (121) and the lower positioning edge (121) extend to the same side and form a mounting groove (123) between the upper positioning edge and the lower positioning edge;

the positioning convex ring (31) is sleeved with a torsion spring (4), and a first abutting end (41) and a second abutting end (42) of the torsion spring (4) are bent and abutted in the corresponding mounting grooves (123).

3. The binding clip of claim 1, wherein: the left clamp arm (1) and the right clamp arm (2) are symmetrically arranged.

4. A binding clip as claimed in claim 3, wherein: the force-bearing part (11), the rotating part (12) and the jaw part (13) are integrally formed.

5. The binding clip of any one of claims 1-4, wherein:

the rotating parts (12) of the left clamp arm (1) and the right clamp arm (2) are respectively provided with a first pin hole (124);

the connection assembly (5) comprises:

the two pins (51) are respectively and movably arranged in the corresponding first pin holes (124) in a penetrating way;

the upper connecting plate (52) is positioned above the left clamp arm (1) and the right clamp arm (2) and is connected with the first ends of the two pins (51); and

and the lower connecting plate (53) is positioned below the left clamp arm (1) and the right clamp arm (2) and is connected with the second ends of the two pins (51).

6. The binding clip of claim 5, wherein: a flange (511) is arranged at the first end of the pin (51), a clamp spring groove (512) is formed in the second end of the pin (51), and a clamp spring (54) used for limiting is arranged in the clamp spring groove (512).

7. The binding clip of claim 6, wherein: the upper connecting plate (52) and the lower connecting plate (53) are correspondingly provided with mounting holes (521).

8. A pressure pipe tongs which is characterized in that: comprising a binding clip according to any one of claims 1 to 7.

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