A vertical lifting drilling device

Abstract

The present invention relates to a vertical jacking drilling device, comprising a drill bit, a jacking cap with mud and water holes, a drill rod, and a power device. The drill rod is connected to the drill bit by a pin or welding, and the drill rod is connected to the power device. The drill bit is a cone as a whole, and cutting teeth are arranged on the conical surface of the cone. With the vertical jacking drilling device of the present invention, vertical jacking construction is carried out while drilling upwards through the drill bit. The vertical jacking construction device of the present invention can greatly improve the efficiency of vertical jacking construction of pipelines, and is convenient for controlling the verticality of the jacking pipelines.

Description

Technical Field

[0001] The invention relates to the field of underground engineering, and in particular to a pipeline vertical jacking drilling device. Background Art

[0002] Vertical jacking is to install jacking equipment inside the completed underground structure, transport the processed jacking pipe section to the reserved opening, and after the jacking pipe section is connected to the reserved pipe opening, use the jacking equipment to push out the jacking pipe section one by one. Generally, the jacking method is adopted to break through the covering soil layer to reach the specified height.

[0003] Vertical jacking often needs to pass through thick soil layers. The traditional "stifling top" construction method has large jacking resistance, slow jacking speed, and requires large jacking force, which is very uneconomical. Moreover, when the soil layer is thicker and more complex, the verticality of vertical jacking is difficult to control. Traditional vertical jacking has a large disturbance on the soil and a great impact on the environment. Therefore, it is of great significance to study a vertical jacking construction method that is economical and efficient, requires less jacking force, has less impact on the environment, and has better verticality control. Summary of the invention

[0004] The present invention proposes a vertical lifting drilling device to solve the problems raised in the above technical background.

[0005] The technical solution of the present invention is: a vertical jacking drilling device, including a drill bit, a jacking cap with mud and water holes, a drill rod, and a power device. The drill rod is connected to the drill bit by a pin or welding, the drill rod is connected to the power device, and the drill bit is a cone as a whole, and cutting teeth are provided on the cone surface of the cone.

[0006] Furthermore, the drill bit is composed of cutting teeth, an annular plate, a cross-shaped stiffening plate, an inclined plate, a top drill tip, and a triangular stiffening rib plate. The annular plate is located at the bottom of the drill bit, two cross-shaped stiffening plates are arranged, which are respectively located on the inner side of the annular plate and the middle of the drill bit, the inclined plate is located on the side of the drill bit, and the triangular stiffening rib plate is located below the bottom cross-shaped stiffening plate.

[0007] Furthermore, the cutting teeth are located above the inclined plate, the cutting teeth and the top drill tip are installed by threading or welding, and the top drill tip contains a water injection channel.

[0008] Furthermore, the annular plate, the cross-shaped stiffening plate, the oblique plate, and the triangular stiffening rib plate are all assembled by welding.

[0009] Furthermore, the drill pipe contains a water injection channel.

[0010] The beneficial effect of the present invention is that the vertical jacking drilling device of the present invention can be used to drill upwards through the drill bit while performing vertical jacking construction. The vertical jacking construction device of the present invention can greatly improve the efficiency of vertical jacking construction of pipelines and facilitate the control of the verticality of the jacking pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an installation diagram of the vertical jacking drilling device of the present invention;

[0012] Figure 2 This is a front view of the structure of the vertical lifting drilling device of the present invention;

[0013] Figure 3 It is a top view of the structure of the vertical lifting drilling device of the present invention;

[0014] Figure 4 It is a schematic diagram of the spatial positions of the components of the drill bit of the vertical jacking drilling device of the present invention;

[0015] In the figure: 1-drill bit; 1-1-cutting teeth; 1-2-top drill tip; 1-3-annular plate; 1-4-cross-shaped stiffening plate; 1-5-oblique plate; 1-6-triangular stiffening rib plate; 2-drill rod; 3-power equipment. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figures 1 to 4 As shown, a vertical lifting drilling device in an embodiment of the present invention includes a drill bit 1, a lifting cap with mud and water holes, a drill rod 2, a power device 3, etc.

[0018] The drill bit 1 is composed of an annular plate 1-3, a cross-shaped stiffening plate 1-4, an inclined plate 1-5, a cutting tooth 1-1, a top drill tip 1-2, and a triangular stiffening rib plate 1-6.

[0019] The drill bit 1 is in the shape of a cone as a whole, the annular plate 1-3 is located at the bottom of the drill bit, two cross-shaped stiffening plates 1-4 are arranged, which are located at the inner side of the annular plate 1-3 and the middle of the drill bit respectively, the oblique plate 1-5 is located at the side of the drill bit, and the triangular stiffening rib plate 1-6 is located below the bottom cross-shaped stiffening plate 1-4.

[0020] The annular plate 1-3, the cross-shaped stiffening plate 1-4, the oblique plate 1-5, and the triangular stiffening rib plate 1-6 are all assembled by welding, the cutting tooth 1-1 is located above the oblique plate 1-5, the cutting tooth 1-1 and the top drill tip 1-2 are installed by threading or welding, and the top drill tip 1-2 contains a water injection channel.

[0021] The length of each section of drill pipe 2 is preferably 1.2 to 1.5 times the length of a standard pipe section. The drill pipe 2 and the drill bit 1 can be connected by a latch or welding, and the drill pipe 2 contains a water injection channel.

[0022] A construction process of a vertical jacking drilling device in an embodiment of the present invention:

[0023] 1) Determine the size. Combine the diameter of the vertical lifting pipe section, the properties of the cut soil layer, calculate the torque and other parameters, and determine the size of the required annular plate, cross-shaped stiffening plate, oblique plate, cutting teeth, top drill tip, and triangular stiffening rib plate.

[0024] 2) Drill bit assembly. The annular plate, cross-shaped stiffening plate, oblique plate, and triangular stiffening rib plate are assembled by welding, and the cutting teeth and the top drill tip are installed by threading or welding. The top drill tip contains a water injection channel.

[0025] 3) Drill bit installation: The drill bit and vertical lifting cap are pre-installed on the top pipe wall, and the drill bit is located above the vertical lifting cap.

[0026] 4) The drill bit is protected by installing a hinge plate on the pipe wall.

[0027] 5) Drilling and cutting. During the drilling process, high-pressure water needs to be injected through the drill rod and the top drill tip water injection channel to assist in cutting the soil. The drill bit rotation cutting speed should not be too high.

[0028] 6) Drill pipe assembly. The drilling distance should be 1.2 to 1.5 times of the standard pipe section. The length of each drill pipe section is 1.2 to 1.5 times of the standard pipe section. After drilling is completed, measures should be taken to prevent the vertical jacking pipe from falling backwards before assembling the drill pipe and assembling the standard pipe section at the same time.

[0029] 7) Anti-falling measures. After the pipe section is lifted into place, in order to prevent the vertical lifting pipe from falling backward, a groove or protrusion is set at one end of the pipe section, and a backstop clamp is installed through the groove or protrusion, and both ends of the backstop clamp are fastened with high-strength bolts.

[0030] 8) Mud discharge and pressure relief. Mud and water holes need to be set on the vertical lifting cap to discharge mud to prevent excessive mud pressure.

[0031] 9) Drill bit recovery: After the drill bit has completed drilling, the drill bit and drill rod are taken out from the ground.

[0032] 10) Water-stopping measures. In the construction of vertical jacking pipelines, first install two rubber water-stop rings when pre-buried pipes, and then install water-stop flanges and oil packing water-stops during jacking construction. The flanges are connected to the pre-buried casing flanges with bolts to facilitate tightening and adjusting the gap to achieve a water-stopping effect.

Claims

1. A vertical jacking drilling device, characterized in that: It includes a drill bit, a lifting cap with a mud and water hole, a drill rod, and a power device. The drill rod is connected to the drill bit by a pin or welding, and the drill rod is connected to the power device. The drill bit is a cone as a whole, and cutting teeth are arranged on the conical surface of the cone. The drill bit is composed of cutting teeth, an annular plate, a cross-shaped stiffening plate, an inclined plate, a top drill tip, and a triangular stiffening rib plate. The annular plate is located at the bottom of the drill bit, and two cross-shaped stiffening plates are arranged, which are respectively located on the inner side of the annular plate and the middle of the drill bit. The inclined plate is located on the side of the drill bit, and the triangular stiffening rib plate is located below the bottom cross-shaped stiffening plate. The cutting teeth are located above the inclined plate, and the cutting teeth and the top drill tip are installed by threading or welding, and the top drill tip contains a water injection channel. The construction process of using the vertical jacking drilling device includes: 1) determining the size, 2) assembling the drill bit, 3) installing the drill bit: the drill bit and the jacking cap with mud and water holes are pre-installed on the top pipe wall, and the drill bit is located above the jacking cap with mud and water holes, 4) installing a hinge plate on the pipe wall to protect the drill bit, 5) drilling and cutting: during the drilling process, high-pressure water needs to be injected through the drill rod and the top drill tip water injection channel to assist in cutting the soil, and the drill bit rotation cutting speed should not be too high, 6) assembling the drill rod ,7) Anti-fall measures,8) Mud discharge and pressure relief: Mud and water holes need to be set on the jacking cap with mud and water holes for mud discharge to prevent excessive mud pressure,9) Drill bit recovery: After the drill bit is drilled, the drill bit and drill rod are taken out from the ground,10) Water-stopping measures: In the construction of vertical jacking pipelines, first install two rubber water stop rings when pre-buried pipes, and then install water stop flanges and oil packing water stop during jacking construction. The flange is connected to the pre-buried casing flange with bolts to facilitate tightening and adjusting the gap to achieve a water-stopping effect.

2. The vertical jacking drilling device according to claim 1, characterized in that: The annular plate, the cross-shaped stiffening plate, the oblique plate and the triangular stiffening rib plate are all assembled by welding.

3. The vertical jacking drilling device according to claim 1, characterized in that: The drill pipe contains a water injection channel.

Images