CN109514476B

CN109514476B - Nondestructive pipe tongs

Info

Publication number: CN109514476B
Application number: CN201811527018.1A
Authority: CN
Inventors: 刘敏鸿; 刘庆宇; 黄延峰; 赵兴茂; 付家安
Original assignee: China Resources Gas Zhengzhou Municipal Design And Research Institute Co ltd
Current assignee: China Resources Gas Zhengzhou Municipal Design And Research Institute Co ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2023-12-15
Anticipated expiration: 2038-12-13
Also published as: CN109514476A

Abstract

The invention provides a nondestructive pipe wrench, which comprises a stressed handle, a first clamping piece, a second clamping piece and a third clamping piece, wherein the head part of the stressed handle, the first clamping piece, the second clamping piece and the third clamping piece are sequentially hinged through a pin shaft; moreover, the movable piece comprises the columnar base, the arc-shaped plate for installing the gasket and the connecting plate for connecting the two, the base is detachably embedded in the installation through hole, the arc-shaped plate can swing in the arc-shaped through groove under the drive of the base, and the three movable pieces are used for fixing the pipeline together, so that the pipeline is uniformly stressed in the circumferential direction, the stress area is increased, the pipeline is prevented from deforming, and the protection performance of the pipeline is further improved.

Description

Nondestructive pipe tongs

Technical Field

The invention belongs to the technical field of pipeline installation tools, and particularly relates to a nondestructive pipe wrench.

Background

The pipe tongs are mainly used for installing round pipelines, and when the pipe tongs are used, the pipe tongs are clamped outside the pipeline to be installed, and the pipeline is rotated by operating the pipe tongs, so that the installation between the pipeline and the joint is realized. Most of the existing pipe tongs are F-shaped, and the clamping of the pipeline is realized by rotating a screw to control the distance between the jaws. However, such pipe tongs have the following disadvantages: 1. the screw thread piece needs to be adjusted when the screw is loosened or screwed each time, so that the operation is inconvenient; 2. in order to increase friction force, the contact part of the pipeline is tooth-shaped, the pipeline is easy to scratch during operation, and in order to solve the technical problems, the patent with the application number of CN201620683971.5 discloses a nondestructive pipe wrench which comprises a stressed handle bar, a connecting rod, a first pipe clamping device, a second pipe clamping device and a protection pad; the head part of the stress handle rod, the connecting rod, the first pipe clamping device and the second pipe clamping device are sequentially connected in a rotary mode, and the free end of the second pipe clamping device is connected with the head part of the stress handle rod in a buckling mode in an openable and closable mode; one protection pad is located the convex inboard of first calorie of pipe ware, and another protection pad is located the convex inboard of second calorie of pipe ware, and when second calorie of pipe ware and atress barre were detained, first calorie of pipe ware and second calorie of pipe ware enclose into the annular of gripping the pipe, and this scheme can reach the purpose of protecting the pipeline surface when the pipeline is installed, but this scheme still has following technical problem when using: firstly, the first pipe clamping device and the second pipe clamping device are mutually separated in a natural state, so that the pipe clamp occupies space so as to be inconvenient to carry, and because a necessary holding mechanism is not needed, when the pipe clamp is used, a stressed handle is easily separated from the second pipe clamping device; secondly, the scheme only has two pipe clamping devices, and the angle of the protection pad on the two pipe clamping devices can not be adjusted, so that the stress area between the pipe clamping devices and the pipeline is very small, and the damage to the outer surface of the pipeline is still very easy to cause.

Disclosure of Invention

The invention aims to provide a nondestructive pipe wrench, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a no harm pipe tongs, includes atress handle, first fastener, second fastener and third fastener, the head of atress handle, first fastener, second fastener and third fastener loop through the round pin axle in proper order and articulate, the free end of third fastener is integrative to be provided with the fixture block, the head of atress handle is integrative to be provided with the dog, form the tiger's mouth that is used for the card to establish the dog between this dog and the first fastener, the junction of first fastener and second fastener all is provided with the spring of embracing, under the effect of embracing the spring, the fixture block card is established in tiger's mouth and first fastener, second fastener and third fastener enclose into annular structure jointly, the inboard of first fastener, second fastener and third fastener all set up the arc through-slot and set up the installation through-hole that is linked together with the arc through-slot in the arc through-slot, install the activity piece jointly in this installation through-hole and the arc through-slot including being base, the junction and the junction of second fastener and third fastener and the annular spring, the inside joint connection board of being used for setting up the annular base, the inside joint board of the first fastener, second fastener and third fastener, the inside the annular base of the first fastener and the first fastener.

Further, the cross sections of the first clamping piece, the second clamping piece and the third clamping piece are arc-shaped, and the central angles of the first clamping piece, the second clamping piece and the third clamping piece are 120 degrees.

Further, one end of the movable piece, which is far away from the installation through hole, is provided with a gasket.

Further, the gasket is arranged on the intrados of the arc-shaped plate.

Further, the three mounting through holes are respectively arranged at the inner sides of the middle positions of the first clamping piece, the second clamping piece and the third clamping piece.

Further, one side of the installation through hole is provided with a baffle plate for supporting the base, a positioning hole is formed in the baffle plate, and one end of the base is provided with a positioning protrusion matched with the positioning hole.

Further, the middle positions of the first clamping piece, the second clamping piece and the third clamping piece are all provided with reinforcing plates at the outer sides.

Further, the axes of the positioning protrusion, the base and the mounting through hole are parallel.

Further, a plurality of weight-reducing through holes for reducing the weight of the stressed handle are formed in the stressed handle at intervals.

Compared with the prior art, the invention has the beneficial effects that:

1. the first clamping piece, the second clamping piece and the third clamping piece are clamped in the tiger mouth by the clamping blocks which are integrally arranged with the third clamping piece under the action of the enclasping spring, and the first clamping piece, the second clamping piece and the third clamping piece jointly enclose into an annular structure, so that the portable electric bicycle is easy to carry;

2. the inner sides of the first clamping piece, the second clamping piece and the third clamping piece are respectively provided with a gasket, and the gaskets are used for protecting the pipeline;

3. the movable sheets comprise a columnar base, an arc-shaped plate for installing the gasket and a connecting plate for connecting the two, the base is detachably embedded in the installation through hole, the arc-shaped plate can swing in the arc-shaped through groove under the drive of the base, and the three movable sheets are used for jointly fixing the pipeline, so that the pipeline is uniformly stressed in the circumferential direction, the stress area is increased, the pipeline is prevented from deforming, and the protection performance of the pipeline is further improved;

4. the movable sheets are detachably connected, and a user can select the movable sheets with different connecting plate thicknesses according to pipelines with different diameters when using the movable sheet type pipeline connector, so that the movable sheet type pipeline connector is simple in replacement mode, and therefore the movable sheet type pipeline connector can be applied to pipelines with different types and is high in applicability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram showing the connection relationship between the first, second and third clamping members and three movable pieces respectively;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of the positional relationship of the arcuate through slots, mounting holes and reinforcing plates in the present invention;

FIG. 5 is a schematic view of the structure of the movable plate in the present invention;

FIG. 6 is a schematic diagram showing the connection relationship between the first, second and third clamping members and the baffle plate respectively;

the marks in the figure: 1. the device comprises a stress handle, 101, a weight-reducing through hole, 2, a first clamping piece, 201, an arc-shaped through groove, 202, a mounting through hole, 203, a baffle, 204, a positioning hole, 205, a reinforcing plate, 3, a second clamping piece, 4, a third clamping piece, 5, a pin shaft, 6, a movable piece, 601, a gasket, 602, a base, 603, an arc-shaped plate, 604, a connecting plate, 605, a positioning protrusion, 7, a stop block, 8, a clamping block, 9, a tiger mouth, 10 and a holding spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.

As shown in fig. 1, a nondestructive pipe wrench comprises a stress handle 1, a first clamping piece 2, a second clamping piece 3 and a third clamping piece 4, wherein the head part of the stress handle 1, the first clamping piece 2, the second clamping piece 3 and the third clamping piece 4 are hinged through a pin shaft 5 in sequence, a clamping block 8 is integrally arranged at the free end of the third clamping piece 4, a stop block 7 is integrally arranged at the head part of the stress handle 1, a tiger mouth 9 for clamping the stop block 7 is formed between the stop block 7 and the first clamping piece 2, and the first clamping piece 2 is required to be described herein, because the distance between the first clamping piece 2 and the stop block 7 is continuously changed, the size of the tiger mouth 9 is not fixed, as shown in fig. 3, the joint of the first clamping piece 2 and the second clamping piece 3 and the joint of the second clamping piece 3 and the third clamping piece 4 are all provided with a holding spring 10, the clamping block 8 is clamped in the tiger mouth 9 under the action of the holding spring 10, the first clamping piece 2, the second clamping piece 3 and the third clamping piece 4 are in a circular structure, and the circular cross section of the third clamping piece 4 is further optimized to form an arc-shaped cross section of the third clamping piece 4 and the circular cross section of the third clamping piece 4 is formed by the arc-shaped cross section of the third joint 120; as shown in fig. 4, the inner sides of the first clamping piece 2, the second clamping piece 3 and the third clamping piece 4 are provided with an arc-shaped through groove 201, the inner side of the arc-shaped through groove 201 is provided with a mounting through hole 202 communicated with the arc-shaped through groove 201, as shown in fig. 2, the mounting through hole 202 and the arc-shaped through groove 201 are internally provided with a movable piece 6 together, as shown in fig. 5, the movable piece 6 comprises a cylindrical base 602, an arc-shaped plate 603 and a connecting plate 604 for connecting the two, the base 602, the arc-shaped plate 603 and the connecting plate 604 are integrally arranged, the base 602 is detachably embedded in the mounting through hole 202, and the arc-shaped plate 603 can swing in the arc-shaped through groove 201 around the central axis direction of the base 602.

Further optimizing this scheme, the one end that mounting hole 202 was kept away from to movable plate 6 is provided with gasket 601, gasket 601 sets up on the intrados of arc 603, and the gasket is used for carrying out basic protection to the pipeline.

Further optimize this scheme, the three installation through-hole 202 set up respectively in the intermediate position department inboard of first fastener 2, second fastener 3 and third fastener 4 three, and three movable pieces fix and fix a position the pipeline jointly to make the pipeline atress evenly and the atress area increase in the circumferencial direction, prevent that the pipeline from warping, further promoted the protection performance to the pipeline.

As shown in fig. 6, one side of the mounting through hole 202 is provided with a baffle 203 for supporting the base 602, the baffle 203 is provided with a positioning hole 204, one end of the base 602 is provided with a positioning protrusion 605 matched with the positioning hole 204, the movable piece 6 is embedded in the mounting through hole 202 through the base 602 and can be moved out from one end of the mounting through hole 203, so that the movable piece is detachably connected, and it is to be noted that the sizes of the base 602 and the arc 603 in the movable piece 6 are fixed, but the sizes of the connecting plates 604 in different movable pieces 6 are different, so that a user can select the movable piece with different connecting plate thicknesses according to pipelines with different diameters when using the invention, and the replacement mode is simple, thereby the invention can be applied to pipelines with different models, and has strong applicability.

Further optimizing the scheme, in order to improve the wear resistance of the present invention, the outer sides of the intermediate positions of the first clamping piece 2, the second clamping piece 3 and the third clamping piece 4 are all integrally provided with a reinforcing plate 205.

Further optimizing the scheme, the axes of the positioning protrusion 605, the base 602 and the mounting through hole 202 are parallel.

Further optimizing the scheme, in order to lighten the weight of the invention for carrying and using, a plurality of weight-reducing through holes 101 for lightening the weight of the stress handle are arranged on the stress handle 1 at intervals.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a no harm pipe wrench, includes atress handle (1), first fastener (2), second fastener (3) and third fastener (4), its characterized in that: the head of the stress handle (1), the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4) are hinged through a pin shaft (5) in sequence, a clamping block (8) is integrally arranged at the free end of the third clamping piece (4), a stop block (7) is integrally arranged at the head of the stress handle (1), a tiger mouth (9) for clamping the stop block (7) is formed between the stop block (7) and the first clamping piece (2), a holding spring (10) is arranged at the joint of the first clamping piece (2) and the second clamping piece (3) and the joint of the second clamping piece (3) and the third clamping piece (4), and under the action of the holding spring (10), the fixture block (8) is clamped in the tiger mouth (9) and the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4) jointly enclose into an annular structure, the inner sides of the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4) are provided with an arc through groove (201) and an installation through hole (202) communicated with the arc through groove (201) is formed in the inner side of the arc through groove (201), movable pieces (6) are jointly installed in the installation through hole (202) and the arc through groove (201), and the movable pieces (6) comprise a cylindrical base (602), the base (602) is detachably embedded in the installation through hole (202), and the arc plate (603) can swing in the arc through groove (201) around the central axis direction of the base (602);

the sizes of the connecting plates (604) in different movable plates (6) are different, and the movable plates (6) with different connecting plate (604) thicknesses can be selected according to pipelines with different diameters;

the three mounting through holes (202) are respectively arranged at the inner sides of the middle positions of the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4); one side of the installation through hole (202) is provided with a baffle plate (203) for supporting the base (602), the baffle plate (203) is provided with a positioning hole (204), and one end of the base (602) is provided with a positioning protrusion (605) matched with the positioning hole (204).

2. A non-invasive tube clamp according to claim 1, characterized in that: the sections of the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4) are arc-shaped, and the central angles of the first clamping piece, the second clamping piece and the third clamping piece are 120 degrees.

3. A non-invasive tube clamp according to claim 1, characterized in that: one end of the movable piece (6) far away from the mounting through hole (202) is provided with a gasket (601).

4. A non-invasive tube clamp according to claim 3, characterized in that: the gasket (601) is arranged on the intrados of the arc-shaped plate (603).

5. A non-invasive tube clamp according to claim 1, characterized in that: the middle positions of the first clamping piece (2), the second clamping piece (3) and the third clamping piece (4) are all provided with reinforcing plates (205) on the outer sides.

6. A non-invasive tube clamp according to claim 1, characterized in that: the axes of the positioning protrusion (605), the base (602) and the mounting through hole (202) are parallel.

7. A non-invasive tube clamp according to claim 1, characterized in that: the stress handle (1) is provided with a plurality of weight-reducing through holes (101) at intervals, wherein the weight-reducing through holes are used for reducing the weight of the stress handle.