CN218476268U

CN218476268U - Special welding fixture

Info

Publication number: CN218476268U
Application number: CN202222993763.3U
Authority: CN
Inventors: 李金虎
Original assignee: China Tobacco Anhui Industrial Co Ltd
Current assignee: China Tobacco Anhui Industrial Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-02-14
Anticipated expiration: 2032-11-10

Abstract

The utility model provides a welding special fixture, include: the clamp frame with the inverted V-shaped structure is a fixed component, the bottom of the clamp frame is open, the left cross arm and the right cross arm horizontally extend in an overhanging manner, and a cross rod is fixedly extended between the two vertical arms; the clamp comprises a clamp frame, a pair of parallelogram mechanisms, a second connecting rod, a third connecting rod and a fourth connecting rod, wherein the parallelogram mechanisms are arranged at two ends of the clamp frame in a bilateral symmetry manner, each parallelogram mechanism takes a cross arm as a first connecting rod, and a sector gear taking a hinge point with the first connecting rod as a circle center is formed at the upper end of the third connecting rod positioned at the inner side; the sector gears of the pair of parallelogram mechanisms are transversely opposite, and a rack is arranged between the sector gears and is meshed with the rack respectively; the pair of jaws are arranged on the fourth connecting rods of the pair of parallelogram mechanisms in a bilateral symmetry manner and are transversely opposite; the opening and closing adjusting mechanism is used for adjusting the opening of the pair of jaws; and the locking mechanism is used for locking the handle rod. The utility model discloses it is convenient to keep silent the aperture regulation to have the locking function.

Description

Special welding fixture

Technical Field

The utility model belongs to the technical field of the welding technique and specifically relates to a welding special fixture that says so.

Background

Welding is a technique for joining metals or other thermoplastic materials by heating, high temperatures, etc., and is used more and more frequently in daily production and maintenance. When the components are jointed, the jointing quality is influenced by high temperature or arc light, and the jointing quality is related to the welding effect. The existing welding clamp mostly adopts a vice, a locking pliers and the like, and the opening of a jaw is limited, so that the jaw cannot be easily locked, and much inconvenience is brought to welding.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem, provide a welding special fixture for this reason, it is convenient to keep silent the aperture regulation to locking function has.

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

a welding-specific fixture, comprising:

the clamp frame with the inverted V-shaped structure is a fixed component, the bottom of the clamp frame is open, the left cross arm and the right cross arm horizontally extend in an overhanging manner, and a cross rod is fixedly extended between the two vertical arms;

the pair of parallelogram mechanisms are arranged at two ends of the clamp frame in a bilateral symmetry manner, the parallelogram mechanisms take the cross arm as a first connecting rod, and further comprise a second connecting rod, a third connecting rod and a fourth connecting rod, in an initial state, the first connecting rod and the fourth connecting rod are arranged in parallel in an up-down transverse direction, the second connecting rod and the third connecting rod are arranged in parallel in an outer-inner vertical direction, and a sector gear taking a hinge point with the first connecting rod as a circle center is formed at the upper end of the third connecting rod positioned on the inner side; the sector gears of the pair of parallelogram mechanisms are transversely opposite, and a rack is arranged between the sector gears in a penetrating way and is respectively meshed with the racks;

the pair of jaws are symmetrically arranged on the fourth connecting rods of the pair of parallelogram mechanisms in a left-right mode, the corresponding fourth connecting rods are synchronous displacement members, rod ends on opposite sides of the pair of fourth connecting rods are exposed, the jaws are arranged on exposed ends, and the pair of jaws are transversely opposite;

the opening and closing adjusting mechanism comprises a handle rod and the racks, the handle rod vertically penetrates through the cross rod, the racks are arranged on the left side and the right side of the rod body exposed below the cross rod, and a first limiting rack is arranged on the rod body exposed above the cross rod;

locking mechanism, including second spacing rack and reduction torsion spring, the spacing rack lower extreme of second is installed through the pivot rotation on the horizontal pole, erect under the initial condition and with first spacing rack meshes mutually, breaks away from under the exogenic action the spacing rack of second of first spacing rack passes through reduction torsion spring resets.

The utility model has the structural characteristics that:

the end of the handle rod exposed above the cross rod is horizontally bent to be used as a handheld part.

The cross section of the jaw is of a V-shaped structure, and the open ends of the pair of jaws are transversely opposite.

Compared with the prior art, the utility model discloses beneficial effect embodies:

the utility model discloses the meshing of the sector gear that sets up among rack on the handle bar and a pair of parallelogram mechanism among the adjustment mechanism that utilizes to open and shut, realize the regulation along with the aperture of a pair of jaw of parallelogram mechanism synchronous displacement, the simple operation is applicable to heterotypic component, use under being applicable to multiple environment, and the work efficiency is improved, and the labor intensity is lightened, and, still be equipped with locking mechanism, through the locking to the handle bar and utilize the meshing cooperation of sector gear and handle bar rack, the stability of a pair of current aperture of keeping silent has further been guaranteed.

Drawings

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

fig. 2 is a schematic side view of the present invention.

In the drawings, 1 a jig frame; 2, a cross bar; 3 a first link; 4 a second link; 5 a third link; 6 a fourth link; 7 a sector gear; 8 rack bars; 9, a handle rod; 10 a first limit rack; 11 a hand-held portion; 12 a second limit rack; 13 a return torsion spring; 14 jaws.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the special welding fixture of the present embodiment includes:

the clamp frame 1 of the structure of the Chinese character ji, it is a fixed component, the bottom is open and the horizontal overhang of the lateral arm of left and right sides, fix and cross and stretch a horizontal pole 2 between two vertical arms;

the clamp comprises a pair of parallelogram mechanisms which are bilaterally symmetrical and respectively arranged at two ends of a clamp frame 1, wherein the parallelogram mechanisms take a cross arm as a first connecting rod 3, and further comprise a second connecting rod 4, a third connecting rod 5 and a fourth connecting rod 6, in an initial state, the first connecting rod 3 and the fourth connecting rod 6 are arranged in parallel in an up-down transverse direction, the second connecting rod 4 and the third connecting rod 5 are arranged in parallel in an outer-inner vertical direction, and a sector gear 7 taking a hinge point with the first connecting rod 3 as a circle center is formed at the upper end of the third connecting rod 5 positioned on the inner side; the sector gears 7 of the pair of parallelogram mechanisms are transversely opposite, and a rack 8 is arranged between the sector gears and is respectively meshed with the rack 8;

the pair of jaws 14 are symmetrically arranged on the fourth connecting rods 6 of the pair of parallelogram mechanisms in a left-right mode, the corresponding fourth connecting rods 6 are synchronous displacement members, the rod ends of one opposite side of the pair of fourth connecting rods 6 are exposed, the jaws 14 are arranged on the exposed ends, and the pair of jaws 14 are transversely opposite;

the opening and closing adjusting mechanism comprises a handle rod 9 and a rack 8, wherein the handle rod 9 vertically penetrates through the cross rod 2, the rack 8 is arranged on the left side and the right side of the rod body exposed below the cross rod 2, and a first limiting rack 10 is arranged on the rod body exposed above the cross rod 2;

the locking mechanism comprises a second limiting rack 12 and a reset torsion spring 13, the lower end of the second limiting rack 12 is rotatably installed on the cross rod 2 through a rotating shaft, the second limiting rack 12 is erected in an initial state and meshed with the first limiting rack 10, and the second limiting rack 12 separated from the first limiting rack 10 under the action of external force is reset through the reset torsion spring 13.

Further setting:

the end of the handle bar 9 exposed above the crossbar 2 is horizontally bent to form a handle 11.

The cross section of the jaw 14 is in a V-shaped structure, and the open ends of the pair of jaws 14 are transversely opposite.

The operation mode is as follows:

the pair of jaws 14 is used for clamping a welded part, the second limiting rack 12 is pulled open, the locking of the second limiting rack to the handle rod 9 is released, the handle rod 9 is lifted up by a handheld part 11 which holds the handle rod 9, the rack 8 is meshed with the sector gears 7 on the two sides, the opening of the pair of jaws 14 is adjusted through the transmission of a parallelogram mechanism, after the opening is adjusted to a proper opening, the second limiting rack 12 is loosened, the locking of the handle rod 9 is recovered under the action of a return spring, and therefore the pair of jaws 14 can be stably kept at the current opening.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a welding special fixture, characterized by includes:

the pair of jaws are arranged on the fourth connecting rods of the pair of parallelogram mechanisms in a bilateral symmetry manner, the corresponding fourth connecting rods are synchronous displacement members, the rod ends of the opposite sides of the pair of fourth connecting rods are exposed, the exposed ends are provided with the jaws, and the pair of jaws are transversely opposite;

and the locking mechanism comprises a second limiting rack and a reset torsion spring, the lower end of the second limiting rack is rotatably installed on the cross rod through a rotating shaft, is erected in an initial state and is meshed with the first limiting rack, and the second limiting rack separated from the first limiting rack under the action of external force is reset through the reset torsion spring.

2. The special welding fixture as claimed in claim 1, wherein: the end of the handle rod exposed above the cross rod is horizontally bent to be used as a handheld part.

3. The special welding fixture as claimed in claim 1, wherein: the cross section of the jaw is of a V-shaped structure, and the open ends of the pair of jaws are transversely opposite.