Pulling device and method for small spiral drill

Abstract

The invention relates to a pulling device and method for a small thread drill, the device 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. The method comprises the steps that a drill rod is clamped and fixed through the top seat clamping pipe; the wrench is shaken, so that the rhombic pulling mechanism is vertically stretched, the top seat is driven to be lifted, and pulling of the small spiral drill is achieved. According to the pulling device and method for 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 positive effect is achieved on development of the geotechnical engineering investigation industry.

Description

Technical Field

[0001] The invention relates to the technical field of field drilling for geotechnical engineering investigation, and in particular to a pulling device and a method for a small threaded drill. Background Art

[0002] Small threaded drills are mainly used for the investigation of shallow soil layers, to identify adverse geological conditions such as hidden bays and the thickness of shallow fill, to provide assistance in the selection of natural foundations, and have been widely used in geotechnical engineering investigations.

[0003] The existing method of pulling out small threaded drills adopts the pry bar principle, using the end of the pry bar to clamp the drill rod, and prying the drill rod with force at the tail of the pry bar. Due to the eccentric pulling out, this method is not only laborious, but also has a poor pulling out effect, often causing soil to fall off at the soil extraction thread, which will have a serious impact on the division of shallow soil layers and the acquisition of burial depth. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a device and method for pulling out a small threaded drill, so as to solve the problems of difficulty in pulling out the small threaded drill and low soil extraction efficiency.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A pulling device for a small threaded drill comprises a diamond 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 pulling mechanism is connected to the top seat clamping tube. When the diamond pulling mechanism is extended and retracted, the small threaded drill is pulled out through the top seat clamping tube.

[0007] As an optimal technical solution, a diamond-shaped pulling mechanism includes a base, a top seat, a wrench, a screw rod, two lower hinged rods and two upper hinged rods. The two lower hinged rods and the two upper hinged rods form a diamond structure. The upper and lower ends of the diamond structure are respectively hinged to the top seat and the base. The connection between the upper hinged rod and the lower hinged rod is hinged through a hinge block. The hinge block is provided with a screw hole. The screw hole is provided with a thread matching the screw rod. The two hinge blocks are arranged opposite to each other. The screw rod passes through the two screw holes. The thread direction on the screw rod is opposite to the connection between the two hinge blocks. The wrench is fixedly connected to one end of the screw rod.

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

[0009] As an optimal technical solution, the top seat clamp tube includes a front clamp, a bolt, a front clamping mouth and a clamping opening. The clamping opening passes through the top seat. The front clamping mouth and the front clamping mouth are slidably connected. When the front clamping mouth and the front clamp clamp the small threaded drill, they are fixed by tightening the bolts.

[0010] As a preferred technical solution, the top seat clamping tube also includes a bolt buckle, and the tail of the front clamping head is connected to the top seat through 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 provided with a soil sampling thread.

[0012] As a preferred technical solution, a method for using a pulling device for a small threaded drill comprises the following steps:

[0013] Step 1: Clamp the drill pipe with the front clamp and the front clamp mouth in the top clamp pipe, and tighten the bolts to fix it;

[0014] Step 2: Shake the wrench to drive the screw rod to rotate, so that the diamond structure composed of the lower hinged rod and the upper hinged rod is stretched vertically, driving the top seat to lift, thereby realizing the extraction of the small threaded drill.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The pulling device of the small threaded drill of the present invention has a simple structure and is easy to manufacture. The method adopts an axial pulling method and utilizes mechanical force. The pulling force is large and the soil taking effect is good. It can greatly save manpower and improve the working efficiency of the small threaded drill, which has a positive effect on the development of the geotechnical engineering survey industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a pulling device for a small screw drill of the present invention;

[0018] Figure 2 It is a side view of the extraction device of the small screw drill of the present invention;

[0019] Figure 3 It is a top view of the top clamp pipe in the extraction device of the small screw drill of the present invention;

[0020] Figure 4 The present invention is a schematic structural diagram of a top seat clamping pipe in a pulling device for a small threaded drill.

[0021] In the figure: 1. base; 2. lower hinge rod; 3. screw rod; 4. upper hinge rod; 5. top seat; 6. front clamp; 7. bolt; 8. wrench; 9. bolt buckle; 10. front clamp mouth; 11. clamp mouth; 12. drill rod; 13 soil extraction thread. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with specific implementation methods:

[0023] like Figure 1As shown, a pulling device for a small screw drill comprises a diamond pulling mechanism, a clamping tube of a top seat 5 and a small screw drill, wherein the clamping tube of the top seat 5 clamps the drill rod 12 of the small screw drill, and the diamond pulling mechanism is connected to the clamping tube of the top seat 5. When the diamond pulling mechanism is extended and retracted, the small screw drill is pulled out through the clamping tube of the top seat 5. The device adopts the principle of a jack, and the clamping tube of the top seat 5 is used to clamp the drill rod 12, and the diamond pulling mechanism is used to pull out the small screw drill. Since it is an axial pulling and mechanical force is used, the pulling force is large, the soil extraction effect is very good, and it can greatly save manpower and improve the working efficiency of the small screw drill.

[0024] like Figure 1 As shown, the diamond-shaped extraction mechanism includes a base 1, a top seat 5, a wrench 8, a screw rod 3, two lower hinged rods 2 and two upper hinged rods 4. The two lower hinged rods 2 and the two upper hinged rods 4 form a diamond structure. The upper and lower ends of the diamond structure are respectively hinged to the top seat 5 and the base 1. The connection between the upper hinged rod 4 and the lower hinged rod 2 is hinged through a hinge block. The hinge block is provided with a screw hole. The screw hole is provided with a thread matching the screw rod 3. The two hinge blocks are arranged opposite to each other. The screw rod 3 passes through the two screw holes. The threads on the screw rod 3 and the connection between 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, and the two hinge blocks move in opposite directions, driving the diamond structure composed of the upper and lower hinged rods 2 to expand and contract. When the diamond structure extends vertically, the top seat 5 is lifted to provide an upward pulling force for the small screw drill.

[0025] A limit block is provided at one end of the screw rod 3 away from the wrench 8 .

[0026] like Figure 3 and Figure 4 As shown, the top seat 5 clamps the tube including a front clamp 6, a bolt 7, a front clamping mouth 10 and a clamping opening 11. The clamping opening 11 penetrates the top seat 5. The front clamp 6 is slidably connected to the clamping opening 11. When the front clamping mouth 10 and the front clamp 6 clamp the small threaded drill, they are fixed by tightening the bolt 7.

[0027] The top seat 5 clamping tube also includes a bolt buckle 9, and the tail of the front clamp 6 is connected to the top seat 5 through the bolt buckle 9 to prevent the front clamp 6 from falling off from the clamping opening 11.

[0028] like Figure 2 As shown, the upper part of the small screw drill is a drill rod 12, and the lower part is provided with a soil extraction thread 13. The drill rod 12 realizes the extension and extraction of the small screw drill, and the soil extraction thread 13 realizes the extraction of shallow soil layers.

[0029] like Figure 1 and Figure 2 As shown, a method for using a pulling device for a small threaded drill comprises the following steps:

[0030] Step 1: Clamp the drill rod 12 with the front clamp 6 and the front clamp mouth 10 in the clamp tube of the top seat 5, and tighten the bolt 7 to fix the top seat 5 and the drill rod 12;

[0031] Step 2, shake the wrench 8 to drive the screw rod 3 to rotate, so that the diamond structure composed of the lower hinged rod 2 and the upper hinged rod 4 is stretched vertically, driving the top seat 5 to lift, and transferring the mechanical pulling force to the drill rod 12, using mechanical force to pull out the small threaded drill.

[0032] This embodiment is only a further explanation of the invention rather than a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of the claims of the invention, they are protected by the patent law.

Claims

1. A pulling device for a small screw drill, characterized in that: The utility model comprises a diamond-shaped pulling mechanism, a top seat clamping pipe and a small screw drill. The top seat clamping pipe clamps the drill rod of the small screw drill. The diamond-shaped pulling mechanism is connected with the top seat clamping pipe. When the diamond-shaped pulling mechanism is extended and retracted, the small screw drill is driven to be pulled out through the top seat clamping pipe.

2. The extraction device for a small screw drill according to claim 1, characterized in that: The diamond-shaped pulling mechanism comprises a base, a top seat, a wrench, a screw rod, two lower hinged rods and two upper hinged rods. The two lower hinged rods and the two upper hinged rods form a diamond structure. The upper and lower ends of the diamond structure are respectively hinged to the top seat and the base. The connection between the upper hinged rod and the lower hinged rod is hinged through a hinge block. The hinge block is provided with a screw hole. The screw hole is provided with a thread matching the screw rod. The two hinge blocks are arranged opposite to each other. The screw rod passes through the two screw holes. The thread directions of the screw rod and the connection between the two hinge blocks are opposite. The wrench is fixedly connected to one end of the screw rod.

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

4. The extraction device for a small screw drill according to claim 2, characterized in that: The top seat clamping tube comprises a front clamping head, a bolt, a front clamping mouth and a clamping opening, wherein the clamping opening passes through the top seat, the front clamping head is slidably connected with the clamping opening, and the front clamping mouth and the front clamping head are fixed by tightening the bolts when clamping the small threaded drill.

5. The extraction device for a small screw drill according to claim 4, characterized in that: The top seat clamping tube also includes a bolt buckle, and the tail of the front clamping head is connected to the top seat through the bolt buckle.

6. The extraction device for a small screw drill according to claim 1, characterized in that: The upper part of the small threaded drill is a drill rod, and the lower part is provided with a soil-taking thread.

7. A method for using the extraction device for a small screw drill according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: Step 1: Clamp the drill pipe with the front clamp and the front clamp mouth in the top clamp tube, and tighten the bolts to fix it; Step 2: Shake the wrench to drive the screw rod to rotate, so that the diamond structure composed of the lower hinged rod and the upper hinged rod is stretched vertically, driving the top seat to lift, thereby realizing the extraction of the small threaded drill.

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