Calipers facilitating disassembly of auger stem

Abstract

The calipers comprise a calipers main arm and a calipers auxiliary arm, a fixed insertion shaft is arranged at the left end of the calipers main arm, the calipers main arm rotates along the fixed insertion shaft to drive the fixed insertion shaft to rotate synchronously, the lower side of the calipers main arm is provided with the calipers auxiliary arm, and the calipers auxiliary arm is connected with the calipers main arm. The left end of the auxiliary caliper arm is hinged to the main caliper arm through a fixed insertion shaft. Compared with the prior art, the clamping device has the advantages that the drill rod body is clamped in three directions by avoiding the spiral blade of the spiral drill rod, the clamping firmness of the drill rod body is improved, the clamping slipping phenomenon can be avoided, and the dismounting efficiency of the spiral drill rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a caliper for facilitating the disassembly of a spiral drill pipe. Background Technique

[0002] In coal mine engineering and drilling engineering, deep-hole drilling construction is a conventional drilling construction technology, which is applicable to deep-hole drilling construction in geological conditions above medium hardness. The spiral drill pipe is composed of a drill pipe body and spiral blades welded together. Its efficient use effect provides a guarantee for the efficient deep-hole drilling of the mine. After the drilling construction is completed, the commonly used caliper for disassembling the spiral drill pipe clamps and disassembles the opposite sides of the drill pipe body. Due to the low clamping firmness, slipping is likely to occur, the speed of disassembling the spiral drill pipe is slow, and the disassembly efficiency of the spiral drill pipe is low. Content of the Utility Model

[0003] The purpose of the utility model is to provide a caliper for facilitating the disassembly of a spiral drill pipe to solve the deficiencies of the prior art proposed in the above background technique. The device avoids the spiral blades of the spiral drill pipe and clamps the drill pipe body in three directions, improving the clamping firmness of the drill pipe body, avoiding the occurrence of clamping slippage, and improving the disassembly efficiency of the spiral drill pipe.

[0004] To achieve the above purpose, the utility model provides the following technical solution: It includes a caliper main arm and a caliper sub-arm. A fixed insertion shaft is arranged at the left end of the caliper main arm. The caliper main arm rotates along the fixed insertion shaft to drive the fixed insertion shaft to rotate synchronously. A caliper sub-arm is arranged on the lower side of the caliper main arm, and the left end of the caliper sub-arm is hinged to the caliper main arm through the fixed insertion shaft;

[0005] A chute is arranged on the caliper sub-arm, and a rack is slidably arranged in the chute. The fixed shaft is in a gear shape at the position of the chute part, and the rack meshes with the gear-shaped position of the fixed shaft. When the caliper main arm rotates along the fixed insertion shaft, the rack slides and displaces due to the meshing of the gear-shaped position.

[0006] Preferably, a jaw Ⅰ is fixed on the left side of the caliper sub-arm. A jaw Ⅱ fixedly connected to the caliper sub-arm is arranged on the upper side of the jaw Ⅰ. A jaw Ⅲ is hingedly connected to the left side of the jaw Ⅱ. An extension part extending upward is arranged on the right side wall of the jaw Ⅲ.

[0007] Preferably, a through groove is penetrated in the jaw Ⅱ, and a push rod is snap-fitted in the through groove. The left end of the push rod extends to the position of the right side wall of the extension part, and the right end of the push rod extends to the position of the left side wall of the rack in the chute. When the push rod squeezes the extension part to the left, the jaw Ⅲ rotates counterclockwise along the hinge position.

[0008] Preferably, the left side wall of the rack is an inclined surface and is perpendicular to the push rod.

[0009] Preferably, a buffer pad for preventing hard contact between the rack and the end wall of the chute is provided at the end of the chute.

[0010] Preferably, a buffer spring is provided between the end wall of the chute and the rack.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By providing an extension portion extending upward on the right side wall of the third jaw, and at the same time, the left end of the push rod extends to the position of the right side wall of the extension portion, it is convenient for the rack to squeeze the extension portion upward to the left during the leftward movement through the push rod, thereby driving the third jaw to rotate counterclockwise along the hinged position with the second jaw, forming a multi-directional squeezing and clamping effect of the auger drill rod by the first jaw, the second jaw and the third jaw, and avoiding slipping during the disassembly process.

[0013] 2. Since the left side wall of the rack is an inclined surface and is perpendicular to the push rod, during the process of the rack moving to the left and squeezing the right end of the push rod, the left side wall of the rack with an inclined surface has a good fitting state with the push rod, which is convenient for squeezing the push rod, thereby achieving the counterclockwise rotation and clamping effect of the third jaw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 It is an enlarged schematic diagram of the third jaw of the present utility model.

[0016] Figure 3 It is a sectional view structure diagram of the caliper sub-arm of the present utility model.

[0017] Figure 4 It is a sectional view structure diagram of the second jaw of the present utility model.

[0018] Figure 5 It is a schematic diagram of the overall working state of the present utility model.

[0019] In the figure: 1. Caliper main arm, 11. Fixed insertion shaft, 2. Caliper sub-arm, 21. Chute, 211. Rack, 22. First jaw, 23. Second jaw, 231. Through groove, 2311. Push rod, 24. Third jaw, 241. Extension portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Refer to the attached Figure 1 to the attached Figure 5 For the caliper that facilitates the disassembly of the auger rod, it includes a main caliper arm 1 and a secondary caliper arm 2. A fixed insertion shaft 11 is provided at the left end of the main caliper arm 1. The main caliper arm 1 rotates along the fixed insertion shaft 11 to drive the fixed insertion shaft 11 to rotate synchronously. The secondary caliper arm 2 is provided below the main caliper arm 1, and the left end of the secondary caliper arm 2 is hinged to the main caliper arm 1 through the fixed insertion shaft 11.

[0022] A chute 21 is provided on the secondary caliper arm 2. A rack 211 is slidably arranged in the chute 21. The fixed shaft is in a gear shape at the position of the chute 21, and the rack 211 meshes with the gear-shaped position of the fixed shaft. When the main caliper arm 1 rotates along the fixed insertion shaft 11, the rack 211 slides and displaces due to the meshing at the gear-shaped position.

[0023] A jaw I 22 is fixed to the left side of the secondary caliper arm 2. A jaw II 23 fixedly connected to the secondary caliper arm 2 is provided above the jaw I 22. A jaw III 24 is hingedly connected to the left side of the jaw II 23. An extension portion 241 extending upward is provided on the right side wall of the jaw III 24, which facilitates the rack 211 to squeeze the extension portion 241 upward to the left during the leftward movement, thereby driving the jaw III 24 to rotate counterclockwise along the hinged position with the jaw II 23, forming a multi-directional squeezing and clamping effect of the auger rod by the jaw I 22, the jaw II 23, and the jaw III 24, and avoiding the slipping phenomenon during the disassembly process.

[0024] A through groove 231 is penetrated through the jaw II 23. A push rod 2311 is snap-fitted in the through groove 231. The left end of the push rod 2311 extends to the position of the right side wall of the extension portion 241, and the right end of the push rod 2311 extends to the position of the left side wall of the rack 211 in the chute 21. When the push rod 2311 squeezes the extension portion 241 to the left, the jaw III 24 rotates counterclockwise along the hinged position.

[0025] The left side wall of the rack 211 is an inclined surface and is perpendicular to the push rod 2311, so that during the process of the rack 211 moving to the left to squeeze the right end of the push rod 2311, the left side wall of the rack 211 with an inclined surface has a good fitting state with the push rod 2311, which is convenient for squeezing the push rod 2311, thereby achieving the counterclockwise rotation and clamping effect of the jaw III 24.

[0026] Preferably, a buffer pad for preventing hard contact between the rack 211 and the end wall of the chute 21 is provided at the end of the chute 21. Of course, a buffer spring can also be provided between the end wall of the chute 21 and the rack 211.

[0027] Usage method of the present utility model:

[0028] When using the present utility model, first, the spiral drill rod is clamped between the jaw I 22 and the jaw II 23, and the curved side of the spiral blade of the spiral drill rod faces the direction between the left end of the jaw I 22 and the left end of the jaw III 24. Hold the main arm 1 and the sub-arm 2 of the caliper, press the right end of the main arm 1 of the caliper downward. The main arm 1 of the caliper drives the fixed insertion shaft 11 to rotate counterclockwise. The gear-shaped position in the middle of the fixed insertion shaft 11 meshes with the rack 211, causing the rack 211 to slide to the left. The inclined surface at the left end of the rack 211 gradually presses the right end of the push rod 2311, causing the push rod 2311 to lift along the inclined surface of the rack 211. The left end of the push rod 2311 presses the extension part 241, causing the jaw III 24 to rotate counterclockwise along the hinge joint with the jaw II 23, squeezing the drill rod body of the spiral drill rod between the jaw I 22, the jaw II 23, and the jaw III 24, clamping the drill rod body in three directions, enhancing the connection firmness with the drill rod body, and improving the disassembly efficiency of the spiral drill rod.

[0029] The above are only the preferred embodiments of the present utility model. It should be noted that for those skilled in the art of this technology, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements are all regarded as being within the protection scope of the present utility model.

Claims

1. A caliper for facilitating the disassembly of a spiral drill rod, comprising a main caliper arm (1) and a secondary caliper arm (2), characterized in that, A fixed insertion shaft (11) is provided at the left end of the main caliper arm (1). The main caliper arm (1) rotates along the fixed insertion shaft (11) to drive the fixed insertion shaft (11) to rotate synchronously. A sub-caliper arm (2) is provided on the lower side of the main caliper arm (1), and the left end of the sub-caliper arm (2) is hinged to the main caliper arm (1) through the fixed insertion shaft (11). A chute (21) is provided on the sub-caliper arm (2). A rack (211) is slidably arranged in the chute (21). The fixed insertion shaft is in a gear shape at the position of the chute (21), and the rack (211) meshes with the gear-shaped position of the fixed insertion shaft. When the main caliper arm (1) rotates along the fixed insertion shaft (11), the rack (211) slides and displaces due to the meshing at the gear-shaped position.

2. The caliper for facilitating the disassembly of a screw drill pipe according to claim 1, wherein, A jaw I (22) is fixed on the left side of the sub-caliper arm (2). A jaw II (23) fixedly connected to the sub-caliper arm (2) is provided on the upper side of the jaw I (22). A jaw III (24) is hingedly connected to the left side of the jaw II (23). An extension portion (241) extending upward is provided on the right side wall of the jaw III (24).

3. The caliper for facilitating the disassembly of a screw drill pipe according to claim 2, characterized in that, A through groove (231) is penetrated through the jaw II (23). A push rod (2311) is snap-fitted in the through groove (231). The left end of the push rod (2311) extends to the position of the right side wall of the extension portion (241). The right end of the push rod (2311) extends to the position of the left side wall of the rack (211) in the chute (21). When the push rod (2311) presses the extension portion (241) to the left, the jaw III (24) rotates counterclockwise along the hinge position.

4. The caliper for facilitating the disassembly of a screw drill pipe according to claim 1, wherein, The left side wall of the rack (211) is an inclined surface and is perpendicular to the push rod (2311).

5. A caliper for facilitating the disassembly of a spiral drill pipe according to claim 1, characterized in that, A buffer pad for preventing the hard contact between the rack (211) and the end wall of the chute (21) is provided at the end of the chute (21).

6. The caliper for facilitating the disassembly of a spiral drill pipe according to claim 1, characterized in that, A buffer spring is provided between the end wall of the chute (21) and the rack (211).

Images