Locking pliers

Abstract

A pair of locking pliers comprises a fixed jaw, a movable jaw, a fixed handle, a tension spring, a supporting plate, an adjusting bolt, a lifting piece, a movable handle, a rivet and the like, the fixed jaw and the fixed handle are connected through welding, the movable jaw is connected with the front end of the fixed handle through the rivet, and the adjusting bolt is arranged at the tail end of the fixed handle. The movable jaw is connected with the movable handle through a rivet, the front end of the supporting plate is connected with the movable handle through a rivet, and the lifting piece is connected with the movable handle through a rivet. The scale at the rear end of the fixed handle represents the opening degree of the locking pliers after the locking pliers are locked, when a workpiece needs to be clamped, the movable handle is completely released firstly, then the position of the adjusting bolt is adjusted, the arrow on the supporting plate is aligned with the scale on the scale ruler, then the movable handle is held and locked, and the locking pliers can just clamp the workpiece at the moment and do not need to be adjusted many times.

Description

TECHNICAL FIELD

[0001] The utility model relates to the hardware tool field. Especially is related to a big force tongs of quick adjustment. BACKGROUND

[0002] At present, the big force tongs on the market are all by fixed jaw, fixed handle, tension spring, support plate, adjusting bolt, lifting piece, movable handle, movable jaw, the big force tongs is mainly used for clamping workpiece to facilitate the processing of workpiece, when using, due to the size change of clamping workpiece, cannot quickly and accurately adjust adjusting bolt to the appropriate position, lead to after locking big force tongs, still need to open big force tongs and adjust again, the adjustment process is too cumbersome, cannot be in place at one time, lead to inconvenient use. SUMMARY

[0003] The utility model provides a big force tongs of quick adjustment in view of above-mentioned prior art's problem.

[0004] The utility model discloses a big force tongs, including fixed jaw, movable jaw, fixed handle, tension spring, support plate, adjusting bolt, lifting piece, movable handle, rivet etc., fixed jaw and fixed handle are connected through welding, movable jaw is connected with the front end of fixed handle through rivet, the tail end of fixed handle is equipped with adjusting bolt, movable jaw and movable handle are connected through rivet, the front end of support plate is connected with movable handle through rivet, lifting piece is connected together with movable handle through rivet, its characterized in that fixed handle rear end is equipped with scale, support plate rear end is equipped with arrow mark, and its fixed handle rear end scale indicates the opening amount after big force tongs locking, when needing clamping workpiece, first completely releases movable handle, then adjusts adjusting bolt position, the arrow on support plate is aligned with the scale on scale ruler, then holds movable handle and locks, when big force tongs can just clamp workpiece.

[0005] Summarized above, the utility model discloses easy manufacturing, quick adjustment big force tongs. DRAWINGS

[0006] Fig. 1 It is the state schematic view when the utility model locks;

[0007] Fig. 2 It is the state schematic view when the utility model opens;

[0008] Fig. 3 It is the structure schematic view of fixed handle of the utility model;

[0009] Fig. 4 It is the structure schematic view of support plate of the utility model;

[0010] In the diagram, 1 is the fixed jaw, 2 is the movable jaw, 3 is the fixed handle, 4 is the tension spring, 5 is the support plate, 6 is the adjusting bolt, 7 is the lifting plate, 8 is the movable handle, 9 is the front end of the fixed handle, 10 is the rear end of the fixed handle, and 11 is the end of the fixed handle. Detailed Implementation

[0011] like Figs. 1 to 4 The diagram shows a type of bolt clamp comprising a fixed jaw 1, a movable jaw 2, a fixed handle 3, a tension spring 4, a support plate 5, an adjusting bolt 6, a hinge 7, and a movable handle 8. The fixed jaw 1 and the fixed handle 3 are welded together. The movable jaw 2 is connected to the front end 9 of the fixed handle by a rivet. The end 11 of the fixed handle is provided with the adjusting bolt 6. The movable jaw 2 and the movable handle 8 are connected by a rivet. The front end of the support plate 5 is connected to the movable handle 8 by a rivet. The hinge 7 is connected to the movable handle 8 by a rivet. The key feature is that the rear end 10 of the fixed handle is marked with a scale, and the support plate 5 has an arrow marking. The scale at the rear end 10 of the fixed handle indicates the opening amount of the bolt clamp after locking. When it is necessary to clamp a workpiece, the movable handle 8 is first fully released, then the position of the adjusting bolt 6 is adjusted so that the arrow on the support plate 5 is aligned with the scale, and then the movable handle 8 is gripped and locked to achieve quick clamping of the workpiece.

Claims

1. A pair of bolt cutters, comprising a fixed jaw, a movable jaw, a fixed handle, a tension spring, a support plate, an adjusting bolt, a hinge, a movable handle, and rivets. The fixed jaw and the fixed handle are connected by welding. The movable jaw is connected to the front end of the fixed handle by rivets. The end of the fixed handle is provided with an adjusting bolt. The movable jaw and the movable handle are connected by rivets. The front end of the support plate is connected to the movable handle by rivets. The hinge is connected to the movable handle by rivets. The bolt cutter is characterized in that... The fixed handle has a scale at the rear end, and the support plate has an arrow mark at the rear end.

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