CN210703292U

CN210703292U - Automatic compensation locking clamp

Info

Publication number: CN210703292U
Application number: CN201921198282.5U
Authority: CN
Inventors: 吴红卫; 王庆伟; 侯新军; 韩卫; 靳小林; 李蕊; 杨东涛; 翟晓宁
Original assignee: Xian Shaangu Power Co Ltd
Current assignee: Xian Shaangu Power Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-09
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses an automatic compensation locking clamp, which comprises a positioning seat, an upper jaw, a lower clamp handle, an upper clamp handle and a connecting device; the lower clamp handle and the upper clamp handle are U-shaped grooves with opposite openings; the positioning seat is arranged at the front end of the lower plier handle, and the lower end of the upper plier mouth is inserted into the U-shaped groove of the lower plier handle; the front end of the upper forceps handle is arranged on the upper forceps opening; the rear end of the upper plier handle is provided with an unloading device, the lower end of the unloading device is inserted into the U-shaped groove of the upper plier handle, and the unloading device can rotate around the first rotating shaft within a certain range; the upper end of the connecting device is inserted into the front end of the upper forceps handle, and the lower end of the connecting device is inserted into the rear end of the lower forceps handle; the middle part of the connecting device is provided with a convex part which is in an arc shape at the top end of the slope at two sides. The utility model discloses carry out the line connection to hubbed flange and pipeline, the centre gripping is firm, has dual anti-lock function, and the welder of being convenient for gos deep into the welding, can satisfy the tight group of clamp of the pipeline of different diameter specifications and hubbed flange.

Description

Automatic compensation locking clamp

Technical Field

The utility model belongs to the pipeline welding field, concretely relates to automatic compensation locking clamp.

Background

In order to transfer the pressure of the pipeline and reduce the stress concentration of the flange base, the welding neck flange is widely applied to the product pipeline. However, the straight edge section of the pipe orifice of the high neck welding flange is only about 5mm, which causes assembly difficulty, particularly the pipe orifice is not easy to be directly held by hands to be assembled with a small-caliber pipeline (with the specification of phi 15-60mm), the defects of excessive misalignment, irregular reserved root gaps and the like are easily generated during assembly, and welding electric arcs can burn gloves, fingers, faces and bare skin of matching personnel. Therefore, it is necessary to develop a device for accurately positioning and safely operating the paired hubbed flanges.

Disclosure of Invention

To the difficult technical problem who directly holds between the fingers the group to with the hand directly of the hubbed flange that exists among the prior art and small-bore pipeline, the aim at of this application provides an automatic compensation locking clamp.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize:

an automatic compensation locking clamp comprises a positioning seat, an upper jaw, a lower clamp handle, an upper clamp handle and a connecting device; the cross sections of the lower forceps handle and the upper forceps handle are U-shaped grooves, and the openings of the U-shaped grooves of the lower forceps handle and the upper forceps handle are opposite; the bottom of the positioning seat is arranged at the front end of the lower plier handle and is positioned in the U-shaped groove of the lower plier handle, the lower end of the upper plier jaw is inserted into the U-shaped groove of the lower plier handle and is connected through a first rotating device, and the upper plier jaw can rotate by taking the first rotating device as a shaft; the front end of the upper clamp handle is arranged on the upper clamp opening through a second rotating device, so that the upper clamp handle can rotate relative to the upper clamp opening; the rear end of the upper plier handle is provided with an unloading device through a first rotating shaft, the lower end of the unloading device is inserted into the U-shaped groove of the upper plier handle, and the unloading device can rotate around the first rotating shaft within a certain range; the upper end of the connecting device is inserted into the front end of the U-shaped groove of the upper forceps handle and is fixed through a pin, the upper end of the connecting device can rotate around the pin, and the lower end of the connecting device is inserted into the rear end of the U-shaped groove of the lower forceps handle; the middle part of the connecting device is provided with a convex part which is in an arc shape at the top end of the slopes at two sides.

Furthermore, the anterior lateral wall of lower pincers handle forms a convex fixed part, and it has the regulation groove of fretwork to open on the fixed part, the regulation groove includes slide and a plurality of regulation hole, and the regulation hole distributes in slide one side and communicates with the slide, and the lower extreme of going up the keeping silent is fixed in one of them regulation hole.

Furthermore, the positioning seat is installed on the lower clamp handle through a second rotating shaft, and the positioning seat can rotate outwards by taking the second rotating shaft as a shaft.

Furthermore, the bottom end of the positioning seat is a U-shaped groove, the front end of the lower clamp handle is installed in the U-shaped groove of the positioning seat through a second rotating shaft, and the positioning seat can move left and right along the second rotating shaft.

Further, the first rotating device adopts a joint bearing; the second rotating device connecting the upper forceps handle and the upper forceps jaw adopts a joint bearing.

Furthermore, an adjusting device is installed at the rear end of the lower clamp handle, and the front end of the adjusting device is in contact with the lower end of the connecting device.

Furthermore, an elastic piece is connected between the upper jaw and the lower jaw handle; the upper jaw comprises a connecting portion and a clamping portion, wherein the upper end of the elastic piece is connected with the upper jaw through a connecting hole formed in the connecting portion, and the lower end of the elastic piece is inserted into a U-shaped groove in the rear portion of the lower jaw handle and fixed through a pin.

Furthermore, the upper jaw and the connecting device are both provided with lightening holes.

Furthermore, the upper end face of the positioning seat is V-shaped.

Furthermore, a plurality of clamping groove pairs are further arranged on the upper end face.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses light in weight, convenient operation, location are accurate, when the hubbed flange presss from both sides tight group with small-bore pipeline, can make the perfect laminating of hubbed flange, pipeline and clamping part to carry out the line connection with the hubbed flange and pipeline, the centre gripping is firm, and the welder of being convenient for gos deep into the welding, avoided operating personnel directly hold between the fingers the group with the hand and produced the fault tolerance and exceed standard and root clearance reserves defects such as non-standard, injury to operating personnel when can effectively avoiding welding electric arc simultaneously.

2. The utility model discloses in, go up to keep silent and install on the lower pincers handle through the adjustment mechanism that sets up on the lower pincers handle, can adjust the distance between keeping silent and the positioning seat to satisfy pipeline and the holding between the fingers of hubbed flange of different diameter specifications group to, increased by fixed pipeline's diameter scope.

3. The positioning seat in the utility model can be overturned outwards and translated leftwards and rightwards relative to the positioning seat along the second pin shaft, displacement compensation can be carried out on two sides between the positioning seat and the lower clamp handle during translation leftwards and rightwards, and when the welding of the welding; and meanwhile, the outward turning function and the unloading device of the positioning base are combined, so that the clamp has a double anti-lock function, the phenomenon of clamping and locking of the clamp in the working state of automatic locking is prevented, the welding neck flange, the pipeline and the clamp are prevented from being damaged, and the welding neck flange and the pipeline are ensured to clamp and clamp the quality when being clamped and assembled.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the upper jaw;

FIG. 3 is a schematic structural view of a sliding groove;

FIG. 4 is a schematic structural diagram of the positioning seat;

the meaning of the various reference symbols in the drawings: 1-a positioning seat, 1-1-a clamping groove pair, 2-an upper jaw, 2-1-a connecting part, 2-2-a clamping part, 3-a lower clamp handle, 4-an upper clamp handle, 5-a second rotating shaft, 6-an adjusting groove, 7-an adjusting device, 8-an unloading device, 9-a second rotating device and 10-an elastic part; 11-lightening holes, 12-first rotating device, 13-connecting holes, 14-connecting device, 15-adjusting holes, 16-slideway, 17-first rotating shaft and 18-lug boss.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Detailed Description

As shown in fig. 1, the utility model provides an automatic compensation locking clamp, which comprises a positioning seat 1, an upper jaw 2, a lower clamp handle 3, an upper clamp handle 4 and a connecting device 14. The cross sections of the lower clamp handle 3 and the upper clamp handle 4 are U-shaped grooves, and the openings of the U-shaped grooves of the lower clamp handle 3 and the upper clamp handle 4 are opposite; the bottom of the positioning seat 1 is arranged at the front end of the lower plier handle 3, the lower end of the upper plier jaw 2 is inserted into a U-shaped groove of the lower plier handle 3 and is connected through a first rotating device 12, and the upper plier jaw 2 can rotate by taking the first rotating device 12 as a shaft; the front end of the upper plier handle 4 is arranged on the upper plier mouth 2 through a second rotating device 9, so that the upper plier handle 4 can rotate relative to the upper plier mouth 2, the rear end of the upper plier handle 4 is provided with an unloading device 8 through a first rotating shaft 17, the lower end of the unloading device 8 is inserted into a U-shaped groove of the upper plier handle 4, and the unloading device 8 can rotate around the first rotating shaft 17 within a certain range; the upper end of the connecting device 14 is inserted into the front end of the U-shaped groove of the upper plier handle 4 and is fixed by a pin, the upper end of the connecting device 14 can rotate around the pin, and the lower end of the connecting device is inserted into the rear end of the U-shaped groove of the lower plier handle 3; the middle of the connecting device 14 is provided with a convex part 18, and the convex part 18 is in a top arc shape with two slopes.

When the technical scheme is implemented, the welding neck flange and the pipeline are arranged between the upper jaw 2 and the positioning seat 1, an operator holds the lower jaw handle 3 and the upper jaw handle 4 in the hand, presses the unloading device 8 downwards, and transmits the unloading device to the upper jaw handle 4 through the connecting device 14 so as to enable the upper jaw 2 to move downwards, so that the upper jaw 2 is fully attached to the welding neck flange and the pipeline, and the welding neck flange and the pipeline are clamped and assembled. After the welding operation is completed, an operator lifts the rear end of the unloading device 8, in the lifting process, the front end of the unloading device 8 props against the upper side slope of the upper protruding part 18 of the connecting device 14 and slides from bottom to top along the slope, so that the rear end of the upper clamp handle 4 is lifted upwards, the upper clamp handle 4 is transferred through the connecting device 14, the upper clamp mouth 2 is made to move upwards, and the pipeline connected with the high-neck flange is taken out. To sum up, the utility model discloses can press from both sides tight group to hubbed flange and small-bore pipeline, when having avoided directly holding between the fingers the group with the hand, produce that the unfitness of butt joint exceeds standard and root clearance reserves defects such as non-standard to and the injury that electric arc caused cooperation personnel when preventing to weld.

Specifically, a convex fixing portion is formed on the side wall of the front portion of the lower forceps handle 3, a hollow adjusting groove 6 is formed in the fixing portion, as shown in fig. 3, the adjusting groove 6 includes a slideway 16 and a plurality of adjusting holes 15, the adjusting holes 15 are distributed on one side of the slideway 16 and communicated with the slideway, and the lower end of the upper forceps jaw 2 is fixed in one of the adjusting holes 15. Under this mode, fix in adjusting different regulation holes 15 through the lower extreme that will go up 2 of keeping silent, can adjust the distance between 2 of keeping silent and the positioning seat 1 to can satisfy the tight group of clamp of the pipeline of different diameter specifications and hubbed flange and to right, increased the diameter scope by fixed pipeline. When the adjustment is carried out, the first rotating device 12 is moved from the corresponding adjusting hole 15 to the slide way 16, and then reaches the appropriate adjusting hole along the slide way 16 to be fixed on the new adjusting hole 15.

Specifically, the positioning seat 1 is mounted on the lower clamp handle 3 through the second rotating shaft 5, and the positioning seat 1 can rotate outwards by taking the second rotating shaft 5 as an axis, so that the positioning and centering are convenient when the welding of the welding neck flange and the pipeline is carried out, the welding of the welding neck flange and the pipeline can be carried out no matter which end of the welding neck flange is welded, and the operation is convenient; specifically, the bottom end of the positioning seat 1 is a U-shaped groove, the front end of the lower caliper handle 3 is installed in the U-shaped groove of the positioning seat 1 through the second rotating shaft 5, and the positioning seat 1 can move left and right along the second rotating shaft 5, so that the relative position between the positioning seat 1 and the upper caliper opening 2 is adjusted.

The outward turning function of the positioning seat 1 is combined with the unloading device 8 to have double anti-lock function: firstly, after welding is finished, the unloading device 8 is lifted to enlarge the distance between the upper jaw 2 and the positioning seat 1, and the welded pipeline can be taken out of the jaw; if the clamping locking condition can not be relieved through the unloading device 8 after welding, the positioning seat 1 can be outwards turned, so that the welded pipeline is separated from the jaw. Thereby can effectively avoid damaging hubbed flange and pipeline and clamp, guarantee hubbed flange and pipeline and hold the tight quality of clamp when holding the group.

Preferably, the first rotating device 12 adopts a joint bearing; the second rotation means 9 connecting the upper jaw handle 4 and the upper jaw 2 also employs a spherical plain bearing. The joint bearing has high load capacity, is wear-resistant, and can self-align, so that the mode can drive the upper jaw 2 to flexibly compensate and clamp the high-neck flange and the pipeline, and the high-quality clamping assembly of the high-neck flange and the pipeline is completed.

Specifically, the rear end of the lower plier handle 3 is provided with an adjusting device 7, the front end of the adjusting device 7 is contacted with the lower end of a connecting device 14, and the adjusting device is used for adjusting the front and back positions of the lower end of the connecting device 14 in a U-shaped groove of the lower plier handle 3, so that the distance between the upper plier mouth 2 and the positioning seat 1 is finely adjusted. Preferably, the adjusting means 7 is an adjusting nut.

As a specific example, an elastic member 10 is connected between the upper jaw 2 and the lower jaw handle 3; the upper jaw 2 comprises a connecting part 2-1 and a clamping part 2-2, wherein the upper end of the elastic part 10 is connected with the upper jaw 2 through a connecting hole 13 arranged on the connecting part 2-1, and the lower end of the elastic part is inserted into a U-shaped groove at the rear part of the lower jaw handle 3 and is fixed through a pin; in this way, the elastic element 10 is used to hold back the upper jaw 2, so as to prevent the upper jaw 2 from adjusting too much angle. Preferably, the elastic member 10 may be a spring or other elastic member.

Specifically, in order to alleviate whole weight, the utility model discloses all set up lightening hole 11 on last 2 and the connecting device 14 of keeping silent, thereby effectively alleviateed local weight and alleviateed the utility model discloses a whole weight.

Specifically, as shown in fig. 4, the upper end surface of the positioning seat 1 is V-shaped; this mode can improve the tight effect of group to of hubbed flange and pipe clamp. Preferably, the upper end face is also provided with a plurality of clamping groove pairs 1-1 for enhancing the clamping effect. Preferably, there are two card slot pairs 1-1.

Specifically, as shown in fig. 2, one side of the clamping part 2-2 is arc-shaped, so that the welding neck flange, the pipeline and the clamping part 2-2 are perfectly attached and are in line connection with the welding neck flange and the pipeline, the clamping is firm, and the clamping and assembling effect of the welding neck flange and the pipeline can be effectively improved. Preferably, the cross section of the tail end of the clamping part 2-2 is U-shaped, the weight of the upper jaw 2 is effectively reduced, the U-shaped structure is convenient for a welding gun to weld deeply, and the positioning is accurate.

The operation of this example is as follows: moving the first rotating means 12 via the slideway 16 into the appropriate adjustment aperture 15 according to the external diameter of the hubbed flange and pipe; then, the distance between the upper jaw 2 and the positioning seat 1 is finely adjusted through adjustment of an adjusting nut 7, and meanwhile, the distance between the positioning seat 1 and two side walls of the U-shaped groove of the lower clamp handle 3 is adjusted; the welding clamp comprises a positioning seat 1, a positioning seat 2, a lower clamp handle 3, an upper clamp handle 4, a connecting device 14, an unloading device 8, a positioning seat 2, a welding head and the like, wherein the welding head. After the welding operation is finished, the unloading device 8 is lifted upwards, and the pipeline connected with the hubbed flange can be taken out by turning the positioning seat 1 outwards. To sum up, the utility model discloses can press from both sides tight group to hubbed flange and small-bore pipeline, avoid directly holding between the fingers the group to the time, easily produce the production of injury to cooperation personnel when producing the wrong limit volume and exceeding standard and root clearance and reserving defects such as non-standard and welding arc.

Claims

1. An automatic compensation locking clamp comprises a positioning seat, an upper jaw, a lower clamp handle, an upper clamp handle and a connecting device; the cross sections of the lower forceps handle and the upper forceps handle are U-shaped grooves, and the openings of the U-shaped grooves of the lower forceps handle and the upper forceps handle are opposite; the bottom of the positioning seat is arranged at the front end of the lower plier handle, the lower end of the upper plier jaw is inserted into the U-shaped groove of the lower plier handle and is connected through a first rotating device, and the upper plier jaw can rotate by taking the first rotating device as a shaft; the front end of the upper clamp handle is arranged on the upper clamp opening through a second rotating device, so that the upper clamp handle can rotate relative to the upper clamp opening; the automatic clamp is characterized in that an unloading device is mounted at the rear end of the upper clamp handle through a first rotating shaft, the lower end of the unloading device is inserted into a U-shaped groove of the upper clamp handle, and the unloading device can rotate around the first rotating shaft within a certain range; the upper end of the connecting device is inserted into the front end of the U-shaped groove of the upper forceps handle and is fixed through a pin, the upper end of the connecting device can rotate around the pin, and the lower end of the connecting device is inserted into the rear end of the U-shaped groove of the lower forceps handle; the middle part of the connecting device is provided with a convex part which is in an arc shape at the top end of the slopes at two sides.

2. The automatic compensation locking pliers as claimed in claim 1, wherein the front side wall of the lower pliers handle forms a protruding fixing portion, the fixing portion is provided with a hollow adjusting slot, the adjusting slot comprises a slideway and a plurality of adjusting holes, the adjusting holes are distributed on one side of the slideway and are communicated with the slideway, and the lower end of the upper pliers jaw is fixed in one of the adjusting holes.

3. The self-compensating locking pliers as claimed in claim 1, wherein the positioning seat is mounted to the lower plier handle by a second pivot, the positioning seat being capable of being pivoted outwardly about the second pivot.

4. The automatic compensation locking clamp as claimed in any one of claims 1 to 3, wherein the bottom end of the positioning seat is a U-shaped groove, the front end of the lower clamp handle is installed in the U-shaped groove of the positioning seat through a second rotating shaft, and the positioning seat can move left and right along the second rotating shaft.

5. The automatic compensating locking clamp as claimed in any one of claims 1 to 3, characterized in that the first rotation means use a spherical plain bearing; the second rotating device connecting the upper forceps handle and the upper forceps jaw adopts a joint bearing.

6. The automatic compensation locking pliers according to any one of claims 1 to 3, wherein the rear end of the lower plier handle is fitted with an adjustment device, the front end of which is in contact with the lower end of the connection device.

7. The self-compensating locking pliers as claimed in any one of claims 1 to 3, wherein an elastic member is connected between the upper jaw and the lower jaw shank; the upper jaw comprises a connecting portion and a clamping portion, wherein the upper end of the elastic piece is connected with the upper jaw through a connecting hole formed in the connecting portion, and the lower end of the elastic piece is inserted into a U-shaped groove in the rear portion of the lower jaw handle and fixed through a pin.

8. The self-compensating locking pliers as claimed in any one of claims 1 to 3, wherein the upper jaw and the connecting means are provided with lightening holes.

9. The automatic compensation locking pliers of any one of claims 1-3 wherein the upper end of the alignment socket is V-shaped.

10. The self-compensating locking clamp as claimed in any one of claims 1 to 3, wherein a plurality of pairs of notches are provided in the upper end surface.