Multifunctional heavy drill pipe pliers

Abstract

The utility model relates to a pair of multifunctional heavy drill pipe pliers, which belongs to the technical field of hand tools and comprises a pliers handle, a chain plate and a movable pliers mouth body, the chain plate and the movable pliers mouth body are sequentially connected with the pliers handle through a pin shaft, the movable pliers mouth body can be rotated to be clamped with a locking head at the end of the pliers handle, and a clamping area is defined by the movable pliers mouth body and the chain plate. Dovetail grooves are formed in the inner wall of the chain plate and the inner wall of the movable clamp mouth body, and tooth blocks are connected into the dovetail grooves. According to the utility model, the dovetail grooves are formed in the inner walls of the chain plate and the movable jaw body, the tooth block is primarily limited through the dovetail grooves, and then secondary limiting is carried out through the positioning bolt, so that the stability of the tooth block is improved, the clamping effect is improved, and the clamping work is ensured to be stably carried out; the grip is arranged on the outer wall of the movable clamp mouth body, the movable clamp mouth body can be held by hand to rotate during clamping and locking, the operation convenience is improved, efficient and stable clamping operation is carried out, the working efficiency is improved, and the use requirements of operators are met.

Description

Technical Field

[0001] The utility model relates to a drill rod pliers, in particular to a multifunctional heavy-duty drill rod pliers, belonging to the technical field of hand tools. Background Art

[0002] Drill pipe tongs are tools specially used for manually tightening drill tools in core drilling work. The tooth block at the clamping end of the drill pipe tongs is only connected to the tongs body by bolts. After long-term use, the tooth block will show signs of loosening, affecting the clamping strength of the drill pipe tongs, reducing the clamping effect and work efficiency. In addition, drill pipe tongs are generally solid structures and are relatively bulky. When locking, the movable tongs mouth body needs to be held by hand for clamping and locking, which is laborious to operate and has certain requirements for the operator, and cannot meet the use needs. Utility Model Content

[0003] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a multifunctional heavy-duty drill pipe pliers, in which dovetail grooves are arranged on the inner walls of the chain plate and the movable pliers mouth, the tooth blocks are initially limited by the dovetail grooves, and then secondary limited by positioning bolts, thereby improving the stability of the tooth blocks, improving the clamping effect, and ensuring stable clamping work.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a multifunctional heavy-duty drill pipe pliers, comprising a pliers handle, and a chain plate and a movable pliers mouth body which are sequentially connected to the pliers handle through a pin shaft, the movable pliers mouth body can be rotated to be clamped with a locking head at the end of the pliers handle, the movable pliers mouth body and the chain plate enclose a clamping area, the inner walls of the chain plate and the movable pliers mouth body are both provided with dovetail grooves, and tooth blocks are connected to the dovetail grooves.

[0005] Furthermore, a first through hole is extended inwardly from the outer wall of the chain plate, the first through hole is communicated with the dovetail groove, a first positioning bolt is connected in the first through hole, and the first positioning bolt abuts against the tooth block.

[0006] Furthermore, a positioning sleeve is provided on the side wall of the movable jaw body, a second positioning bolt is connected inside the positioning sleeve, and the second positioning bolt passes through the positioning sleeve and abuts against the tooth block.

[0007] Furthermore, a handle is provided on the outer wall of the movable jaw.

[0008] Furthermore, a second through hole is provided on the surface of the chain plate, and the second through hole can be connected to the lifting ring.

[0009] Furthermore, a third through hole is provided at one end of the clamp handle away from the clamping area.

[0010] Furthermore, the surface of the tooth block is provided with a connection hole, and a plurality of the tooth blocks can be stacked and connected; the surface of the tooth block is serrated.

[0011] The utility model provides dovetail grooves on the inner wall of the chain plate and the movable jaw body, performs preliminary positioning of the tooth block through the dovetail grooves, and then performs secondary positioning through the positioning bolts, thereby improving the stability of the tooth block, improving the clamping effect, and ensuring stable clamping work; a handle is provided on the outer wall of the movable jaw body, and the movable jaw body can be held and rotated when clamping and locking, thereby improving operational convenience, performing efficient and stable clamping operations, improving work efficiency, and meeting the use needs of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the chain plate described in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the movable jaw body described in the utility model.

[0015] In the figure, 1, pliers handle; 2, pin shaft; 3, chain plate; 4, movable pliers mouth body; 5, locking head; 6, dovetail groove; 7, tooth block; 8, first through hole; 9, first positioning bolt; 10, positioning sleeve; 11, second positioning bolt; 12, handle; 13, second through hole; 14, third through hole. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1 To Attachment Figure 3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0017] A multifunctional heavy-duty drill pipe pliers comprises a pliers handle 1, and a chain plate 3 and a movable pliers mouth body 4 which are sequentially connected to the pliers handle 1 through a pin shaft 2. The movable pliers mouth body 4 can be rotated to engage with a locking head 5 at the end of the pliers handle 1. The movable pliers mouth body 4 and the chain plate 3 enclose a clamping area. The inner walls of the chain plate 3 and the movable pliers mouth body 4 are both provided with a dovetail groove 6. A tooth block 7 is connected to the dovetail groove 6. The dovetail groove 6 is used to initially limit the tooth block 7 to improve the stability of the tooth block 7.

[0018] A first through hole 8 extends inwardly from the outer wall of the chain plate 3 , and the first through hole 8 is connected to the dovetail groove 6 . A first positioning bolt 9 is connected in the first through hole 8 , and the first positioning bolt 9 abuts against the tooth block 7 , further improving the stability of the tooth block 7 .

[0019] A positioning sleeve 10 is disposed on the side wall of the movable jaw body 4 , and a second positioning bolt 11 is connected inside the positioning sleeve 10 . The second positioning bolt 11 passes through the positioning sleeve 10 and abuts against the tooth block 7 .

[0020] The outer wall of the movable jaw body 4 is provided with a handle 12, which can be used to hold the movable jaw body 4 and rotate it when clamping and locking, thereby improving the convenience of operation.

[0021] The surface of the chain plate 3 is provided with a second through hole 13, and the second through hole 13 can be connected to a lifting ring, so that the drill pipe clamp can be lifted and moved to the construction site, saving manual movement.

[0022] The end of the clamp handle 1 away from the clamping area is provided with a third through hole 14, which can be used for external force of a wire rope to save construction effort.

[0023] The surface of the tooth block 7 is provided with connecting holes, and a plurality of the tooth blocks 7 can be stacked and connected, thereby adjusting the clamping diameter and improving the utilization rate of the drill pipe clamp; the surface of the tooth block 7 is serrated, which increases the friction force and improves the stability.

[0024] The drill pipe tongs can improve the convenience of operation, perform efficient and stable clamping operations, improve work efficiency, and meet the needs of operators.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional heavy-duty drill pipe pliers, comprising a pliers handle (1), a chain plate (3) and a movable pliers mouth body (4) connected to the pliers handle (1) in sequence through a pin shaft (2), wherein the movable pliers mouth body (4) can be rotated to engage with a locking head (5) at the end of the pliers handle (1), and the movable pliers mouth body (4) and the chain plate (3) enclose a clamping area, characterized in that: The inner walls of the chain plate (3) and the movable jaw body (4) are both provided with dovetail grooves (6), and a tooth block (7) is connected inside the dovetail groove (6).

2. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: A first through hole (8) extends inwardly from the outer wall of the chain plate (3), the first through hole (8) is communicated with the dovetail groove (6), a first positioning bolt (9) is connected inside the first through hole (8), and the first positioning bolt (9) abuts against the tooth block (7).

3. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: A positioning sleeve (10) is provided on the side wall of the movable jaw body (4), a second positioning bolt (11) is connected inside the positioning sleeve (10), and the second positioning bolt (11) passes through the positioning sleeve (10) and abuts against the tooth block (7).

4. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: The outer wall of the movable jaw body (4) is provided with a handle (12).

5. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: A second through hole (13) is provided on the surface of the chain plate (3), and the second through hole (13) can be connected to a lifting ring.

6. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: A third through hole (14) is provided at one end of the clamp handle (1) away from the clamping area.

7. The multifunctional heavy-duty drill pipe tongs according to claim 1 are characterized in that: The surface of the tooth block (7) is provided with a connection hole, and a plurality of the tooth blocks (7) can be stacked and connected; the surface of the tooth block (7) is serrated.

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