Pulling device of small spiral drill

Abstract

The utility model relates to a pulling device of a small thread drill, which comprises a rhombus pulling mechanism, a footstock clamping pipe and the small thread drill, the footstock clamping pipe clamps a drill rod of the small thread drill, the rhombus pulling mechanism is connected with the footstock clamping pipe, and the rhombus pulling mechanism drives the small thread drill to pull through the footstock clamping pipe while stretching out and drawing back. According to the pulling device of the small spiral drill, axis pulling is adopted, mechanical force is utilized, the pulling force is large, the soil taking effect is good, manpower can be greatly saved, the working efficiency of the small spiral drill is improved, and the pulling device of the small spiral drill plays a positive role in development of the geotechnical engineering investigation industry.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering exploration and drilling technology, specifically to a pulling device for a small threaded drill. Background Technology

[0002] Small threaded drills are mainly used for the exploration of shallow soil layers to identify adverse geological conditions such as burrows and the thickness of shallow fill, thus helping in the selection of natural foundations. They have been widely used in geotechnical engineering exploration.

[0003] The existing method for pulling out small threaded drills uses the principle of a pry bar. The drill rod is clamped at the end of the pry bar, and the drill rod is pried open at the tail end of the pry bar. Because it is an eccentric pulling method, this method is not only laborious, but also has poor pulling effect. It often causes soil to fall off at the sampling thread, which will seriously affect the division of shallow soil layers and the acquisition of burial depth. Utility Model Content

[0004] To address the technical problems existing in the prior art, this utility model provides a pulling device for small threaded drills, thereby solving the problems of difficulty in pulling out small threaded drills and low soil extraction efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A device for pulling out a small threaded drill includes a diamond-shaped pulling mechanism, a top seat clamping tube, and a small threaded drill. The top seat clamping tube clamps the drill rod of the small threaded drill. The diamond-shaped pulling mechanism is connected to the top seat clamping tube. As the diamond-shaped pulling mechanism extends and retracts, it drives the small threaded drill to be pulled out through the top seat clamping tube.

[0007] As a preferred technical solution, the rhomboid pulling mechanism includes a base, a top seat, a wrench, a screw rod, two lower hinge rods, and two upper hinge rods. The two lower hinge rods and two upper hinge rods form a rhomboid structure. The upper and lower ends of the rhomboid structure are hinged to the top seat and the base, respectively. The connection between the upper and lower hinge rods is through a hinge block. The hinge block has a screw hole with a thread matching the screw rod. The two hinge blocks are arranged opposite to each other, and the screw rod passes through the two screw holes. The threads on the screw rod at the connection between the screw rod and the two hinge blocks are in opposite directions. The wrench is fixedly connected to one end of the screw rod.

[0008] As a preferred technical solution, a limiting block is provided at the end of the screw rod away from the wrench.

[0009] As a preferred technical solution, the top seat clamp includes a front chuck, a bolt, a front chuck mouth, and a clamping opening. The clamping opening passes through the top seat, and the front chuck is slidably connected to the clamping opening. When the front chuck mouth and the front chuck clamp a small thread drill, they are fixed by tightening the bolt.

[0010] As a preferred technical solution, the top clamp also includes a bolt buckle, and the tail of the front clamp is connected to the top clamp via the bolt buckle.

[0011] As a preferred technical solution, the upper part of the small threaded drill is a drill rod, and the lower part is equipped with a soil sampling thread.

[0012] As a preferred technical solution

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The lifting device for small threaded drills of this utility model has a simple structure and is easy to manufacture. It adopts axial lifting and utilizes mechanical force, which has a large lifting force and good soil removal effect. It can greatly save manpower and improve the working efficiency of small threaded drills, and has a positive effect on the development of the geotechnical engineering exploration industry. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the pull-out device for the small thread drill of this utility model;

[0016] Figure 2 This is a side view of the pull-out device for the small thread drill of this utility model;

[0017] Figure 3 This is a top view of the top seat clamp tube in the pulling device of the small thread drill of this utility model;

[0018] Figure 4 This is a schematic diagram of the top seat clamping tube in the pulling device of the small threaded drill of this utility model.

[0019] In the diagram: 1. Base; 2. Lower hinge rod; 3. Screw rod; 4. Upper hinge rod; 5. Top seat; 6. Front chuck; 7. Bolt; 8. Wrench; 9. Bolt buckle; 10. Front chuck; 11. Clamping mouth; 12. Drill rod; 13. Soil sampling thread. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to specific embodiments:

[0021] like Figure 1 As shown, a small threaded drill lifting device includes a diamond-shaped lifting mechanism, a top seat 5 clamping tube, and a small threaded drill. The top seat 5 clamps the drill rod 12 of the small threaded drill. The diamond-shaped lifting mechanism is connected to the top seat 5 clamping tube. As the diamond-shaped lifting mechanism extends and retracts, it drives the small threaded drill to be lifted through the top seat 5 clamping tube. This device adopts the principle of a jack, using the top seat 5 clamping tube to hold the drill rod 12, and using the diamond-shaped lifting mechanism to lift the small threaded drill. Because it is an axial lifting device and utilizes mechanical force, the lifting force is large, the soil removal effect is excellent, and it can greatly save manpower and improve the working efficiency of the small threaded drill.

[0022] like Figure 1As shown, the rhomboid pulling mechanism includes a base 1, a top seat 5, a wrench 8, a screw rod 3, two lower hinge rods 2, and two upper hinge rods 4. The two lower hinge rods 2 and the two upper hinge rods 4 form a rhomboid structure. The upper and lower ends of the rhomboid structure are hinged to the top seat 5 and the base 1, respectively. The connection between the upper hinge rods 4 and the lower hinge rods 2 is achieved through hinge blocks. The hinge blocks have screw holes with threads matching those of the screw rods 3. The two hinge blocks are positioned opposite each other, and the screw rod 3 passes through the two screw holes. The threads on the screw rod 3 at the connection points with the two hinge blocks are in opposite directions. The wrench 8 is fixedly connected to one end of the screw rod 3. When the wrench 8 rotates, it drives the screw rod 3 to rotate, causing the two hinge blocks to move in opposite directions. This causes the rhomboid structure formed by the upper and lower hinge rods 2 to extend and retract. When the rhomboid structure extends vertically, the top seat 5 rises to provide upward pulling force for the small thread drill.

[0023] A limit block is provided at the end of the screw rod 3 away from the wrench 8.

[0024] like Figure 3 and Figure 4 As shown, the top seat 5 clamping tube includes a front chuck 6, a bolt 7, a front chuck 10, and a clamping opening 11. The clamping opening 11 passes through the top seat 5. The front chuck 6 is slidably connected to the clamping opening 11. When the front chuck 10 and the front chuck 6 clamp the small thread drill, they are fixed by tightening the bolt 7.

[0025] The top seat 5 also includes a bolt buckle 9. The tail of the front chuck 6 is connected to the top seat 5 via the bolt buckle 9 to prevent the front chuck 6 from falling out of the clamping opening 11.

[0026] like Figure 2 As shown, the upper part of the small threaded drill is the drill rod 12, and the lower part is equipped with a soil sampling thread 13. The drill rod 12 enables the extension and pulling of the small threaded drill, and the soil sampling thread 13 enables the sampling of shallow soil layers.

[0027] like Figure 1 and Figure 2 As shown, a method for using a small thread drill pulling device includes the following steps:

[0028] Step 1: Use the front chuck 6 and front chuck 10 in the top seat 5 to clamp the drill rod 12, and tighten the bolt 7 to fix the top seat 5 and the drill rod 12.

[0029] Step 2: Crank the wrench 8 to rotate the screw rod 3, causing the diamond structure formed by the lower hinge rod 2 and the upper hinge rod 4 to be stretched vertically, which in turn causes the top seat 5 to be lifted, transferring the mechanical pulling force to the drill rod 12, and using mechanical force to pull out the small thread drill.

[0030] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-creative modifications to this embodiment as needed after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A device for pulling out a small threaded drill, characterized in that, It includes a diamond-shaped lifting mechanism, a top seat clamping tube, and a small threaded drill. The top seat clamping tube clamps the drill rod of the small threaded drill. The diamond-shaped lifting mechanism is connected to the top seat clamping tube. When the diamond-shaped lifting mechanism extends and retracts, it drives the small threaded drill to lift and pull through the top seat clamping tube.

2. The pulling device for a small threaded drill according to claim 1, characterized in that, The rhomboid pulling mechanism includes a base, a top seat, a wrench, a screw rod, two lower hinge rods, and two upper hinge rods. The two lower hinge rods and two upper hinge rods form a rhomboid structure. The upper and lower ends of the rhomboid structure are hinged to the top seat and the base, respectively. The upper and lower hinge rods are connected by hinge blocks. Each hinge block has a screw hole with a thread matching the screw rod. The two hinge blocks are positioned opposite each other. The screw rod passes through the two screw holes. The threads on the screw rod that connect to the two hinge blocks are in opposite directions. The wrench is fixedly connected to one end of the screw rod.

3. The pulling device for a small threaded drill according to claim 2, characterized in that, A limiting block is provided at the end of the screw rod away from the wrench.

4. The pulling device for a small threaded drill according to claim 2, characterized in that, The top seat clamp includes a front chuck, a bolt, a front chuck nozzle, and a clamping opening. The clamping opening penetrates the top seat, and the front chuck is slidably connected to the clamping opening. When the front chuck nozzle and the front chuck clamp a small thread drill, they are fixed by tightening the bolt.

5. The pulling device for a small threaded drill according to claim 4, characterized in that, The top seat clamp also includes a bolt buckle, and the tail of the front clamp is connected to the top seat through the bolt buckle.

6. The pulling device for a small threaded drill according to claim 1, characterized in that, The small threaded drill has a drill rod at the top and a soil sampling thread at the bottom.

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