Grid type underground pipe hole excavation device

Abstract

The utility model relates to the field of underground pipe holes, in particular to a grating type underground pipe hole excavation device which comprises a drill rod, a connecting rod and a driving rod, a supporting structure is installed at one end of the outer wall of the connecting rod, one end of the driving rod is connected with a driving assembly, and a drill bit is installed on the outer wall of one end of the drill rod. Spiral blades are mounted on the outer wall of the drill rod and the outer wall of the connecting rod; the supporting structure comprises installing rings installed in a combined mode, connecting rings welded to the outer walls of the inner sides of the two installing rings and embedded grooves formed in the outer walls of the installing rings. The motor and the speed reducer are installed at the two ends of the outer wall of the top of the supporting frame respectively. After the air bags are expanded, an excavated hole is supported, the multiple sections of air bags support the hole, and the probability of hole collapse is reduced; after the drill bit advances, the spiral blades on the drill rod and the connecting rod discharge soil from holes, so that soil discharge is facilitated, and blockage in the holes is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipe holes, in particular to a grid-type underground pipe hole excavation device. Background Art

[0002] Underground pipelines are pipes laid underground to transport liquids, gases or loose solids. During the laying and construction of underground pipelines, when trenching is not possible, equipment is needed to dig holes in the ground in a non-destructive manner.

[0003] Currently, most ground holes are opened with a drill. The drill is used to explore the path, and then a larger drill is used to expand the hole until the hole is formed. However, since this method requires the use of water, the dug hole is impacted and soaked by water, resulting in a relatively weak underground structure. The hole dug is prone to collapse during subsequent pipe penetration. Utility Model Content

[0004] The purpose of the utility model is to propose a grid-type underground pipe hole excavation device in response to the above-mentioned problems and shortcomings: the air holes on the connecting rod are connected to the annular air passages of the mounting ring, so that gas can enter the airbag, and the airbag supports the excavated hole after expansion. Multiple sections of airbags support the hole, reducing the probability of hole collapse and reducing the probability of collapse during the excavation process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A grid-type underground pipe hole excavation device comprises a drill rod, a connecting rod and a driving rod, wherein a supporting structure is installed at one end of the outer wall of the connecting rod, and one end of the driving rod is connected to a driving assembly, a drill bit is installed on the outer wall of one end of the drill rod, and spiral blades are installed on the outer walls of the drill rod and the connecting rod; the supporting structure comprises a combined mounting ring, a connecting ring welded to the inner outer walls of two mounting rings, and an embedded groove opened on the outer wall of the mounting ring; the driving assembly comprises a supporting frame, a motor and a reducer respectively installed at both ends of the outer wall of the top of the supporting frame.

[0007] Preferably, a universal head is provided between the drill rod, the connecting rod and the driving rod, and outer walls at both ends of the universal head are respectively connected to one end of the drill rod, the connecting rod and the driving rod.

[0008] Preferably, an airbag is provided in the inner groove of the mounting ring, and an annular air passage is opened on the inner wall of the mounting ring, and the airbag is communicated with the annular air passage.

[0009] Preferably, the connecting rod and the driving rod are both provided with air holes, and air hole heads are welded at one end of the connecting rod and the driving rod, a connecting pipe is connected in the air hole head, and a fastening ring is installed on the outer wall of the connecting pipe located at the air hole head.

[0010] Preferably, an active cavity is opened on the inner outer wall of the mounting ring at the air hole at the other end of the connecting rod, and a spring is welded to the top of the inner wall of the active cavity, a plug is installed at the other end of the spring, and the active cavity is connected to the annular airway.

[0011] Preferably, the output shaft of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to one end of the driving rod through a universal head, the driving rod is located at the other end of the air hole and the outer wall is rotatably connected to a sealing ring, and an air pump is installed on the top outer wall of the motor, and the output end of the air pump is connected to the sealing ring;

[0012] According to the above scheme: the air hole on the connecting rod is connected to the annular airway of the mounting ring, so that gas can enter the airbag. After the airbag expands, it supports the excavated hole. Multiple sections of airbags support the hole to reduce the probability of hole collapse.

[0013] Preferably, the air pump and the motor are connected to a switch via a wire, and the switch is connected to a power source via a wire.

[0014] The beneficial effects of the utility model are:

[0015] 1. The air hole on the connecting rod is connected to the annular air channel of the mounting ring, so that the gas can enter the airbag. After the airbag expands, it supports the excavated hole. Multiple airbags support the hole to reduce the probability of hole collapse;

[0016] 2. Use different drill bits according to the characteristics of the land. After the drill bit moves forward, the spiral blades on the drill rod and the connecting rod will discharge the soil from the hole, making it easier to discharge the soil and avoid blockage inside the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a grid-type underground pipe hole excavation device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of one side of a grid-type underground pipe hole excavation device proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the installation ring structure of a grid-type underground pipe hole excavation device proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the installation ring of a grid-type underground pipe hole excavation device proposed by the utility model;

[0021] Figure 5 The utility model provides a schematic diagram of the structure of a driving assembly of a grid-type underground pipe hole excavation device.

[0022] In the figure: 1 drill rod, 2 connecting rod, 3 driving rod, 4 air hole, 5 supporting structure, 6 universal head, 7 driving assembly, 8 drill bit, 9 mounting ring, 10 connecting ring, 11 annular airway, 12 movable cavity, 13 spring, 14 plug, 15 air bag, 16 connecting pipe, 17 air hole head, 18 fastening ring, 19 sealing ring, 20 supporting frame, 21 motor, 22 reducer, 23 air pump, 24 spiral blade. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1:

[0025] Reference Figure 1-2 and Figure 5 A grid-type underground pipe hole excavation device comprises a drill rod 1, a connecting rod 2 and a driving rod 3, a supporting structure 5 is installed at one end of the outer wall of the connecting rod 2, and a driving assembly 7 is connected to one end of the driving rod 3, a drill bit 8 is installed on the outer wall of one end of the drill rod 1, and spiral blades 24 are installed on the outer walls of the drill rod 1 and the connecting rod 2;

[0026] A universal head 6 is provided between the drill rod 1, the connecting rod 2 and the driving rod 3, and the outer walls of both ends of the universal head 6 are connected to one end of the drill rod 1, the connecting rod 2 and the driving rod 3 respectively;

[0027] The driving assembly 7 includes a support frame 20, a motor 21 and a reducer 22 respectively mounted on both ends of the top outer wall of the support frame 20;

[0028] The output shaft of the motor 21 is connected to the input end of the reducer 22, and the output end of the reducer 22 is connected to one end of the driving rod 3 through the universal head 6. The driving rod 3 is located at the other end of the air hole 4 and the outer wall is rotatably connected with a sealing ring 19. The top outer wall of the motor 21 is installed with an air pump 23, and the output end of the air pump 23 is connected to the sealing ring 19. The motor 21 and the reducer 22 drive the drill bit 8 through the driving rod 3, the universal head 6, the connecting rod 2 and the drill rod 1, which is convenient for drilling. The spiral blades 24 on the drill rod 1 and the connecting head 2 are convenient for discharging the excavated soil, which is convenient for use;

[0029] The air pump 23 and the motor 21 are connected to a switch via a wire, and the switch is connected to a power source via a wire.

[0030] Embodiment 2:

[0031] Reference Figure 1-4The support structure 5 includes a combined mounting ring 9, a connecting ring 10 welded to the inner and outer walls of the two mounting rings 9, and an embedded groove provided on the outer wall of the mounting ring 9. After the multiple connecting rods 2 enter the hole, they all support different sections of the hole, thereby improving the safety of the hole;

[0032] The mounting ring 9 is provided with an airbag 15 in the embedded groove, and an annular air passage 11 is opened on the inner wall of the mounting ring 9, the airbag 15 is communicated with the annular air passage 11, and the air hole 4 on the connecting rod 2 is connected with the annular air passage 11 of the mounting ring 9, so that gas can enter the airbag 15, and the airbag 15 supports the excavated hole after expansion, and multiple sections of the airbag 15 support the hole, reducing the probability of hole collapse;

[0033] The connecting rod 2 and the driving rod 3 are both provided with an air hole 4, and an air hole head 17 is welded at one end of the connecting rod 2 and the driving rod 3, a connecting pipe 16 is connected to the air hole head 17, and a fastening ring 18 is installed on the outer wall of the connecting pipe 16 located at the air hole head 17. The air holes 4 of the driving rod 3 and the connecting rod 2 are connected to the connecting pipe 16 through the air hole head 17, and the fastening ring 18 fastens the two ends of the connecting pipe 16 to maintain the stability of the connection;

[0034] An active cavity 12 is provided on the inner outer wall of the mounting ring 9 at the air hole 4 at the other end of the connecting rod 2, and a spring 13 is welded to the top of the inner wall of the active cavity 12. A plug 14 is installed at the other end of the spring 13. The active cavity 12 is connected to the annular airway 11, and the gas enters the airbag 15. After the airbag 15 expands, it supports the inner wall of the dug hole to reduce the probability of hole collapse.

[0035] Working principle: when in use, the motor 21 drives the drill bit 8 through the reducer 22, and the driving rod 3 transmits the force of the motor 21 to the drill bit 8 through the connecting rod 2 and the drill rod 1 in cooperation with the universal head 6. Different drill bits 8 are used according to the characteristics of the land. After the drill bit 8 moves forward, the spiral blades 24 on the drill rod 1 and the connecting rod 2 discharge the soil from the hole. After the connecting rod 2 enters partly, it is necessary to install the connecting rod 2, and assemble the support structure 5 at one end of the connecting rod 2 in advance. When the drill bit 8 stops working, start the air pump 23 to transport gas to the driving rod 3 and the connecting rod 2 through the sealing ring 19. The gas enters the active cavity 12 through the air hole 4 and lifts the height of the plug 14 supported by the spring 13, so that it can be lifted and enter the annular airway 11. Finally, the gas enters the airbag 15. After the airbag 15 expands, it supports the inner wall of the excavated hole to reduce the probability of hole collapse. As multiple connecting rods 2 enter the hole, they all support different sections of the hole to improve the safety of the hole.

[0036] The exemplary implementation of the utility model is described in detail with reference to the examples, however, it is understood by those skilled in the art that, without departing from the concept of the utility model, various modifications and alterations may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the utility model may be made without exceeding the scope of protection of the utility model, which is determined by the attached claims. The foregoing description of the specific exemplary implementation of the utility model is not intended to limit the utility model to the precise form disclosed, and it is obvious that many changes and variations can be made according to the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary implementations of the utility model and various different choices and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A grid-type underground pipe hole excavation device, comprising a drill rod (1), a connecting rod (2) and a driving rod (3), characterized in that: A support structure (5) is installed at one end of the outer wall of the connecting rod (2), and a driving assembly (7) is connected to one end of the driving rod (3); a drill bit (8) is installed on the outer wall of one end of the drill rod (1), and spiral blades (24) are installed on the outer walls of the drill rod (1) and the connecting rod (2); The supporting structure (5) comprises a combined mounting ring (9), a connecting ring (10) welded to the inner and outer walls of the two mounting rings (9), and an embedded groove provided on the outer wall of the mounting ring (9); The driving assembly (7) comprises a support frame (20), a motor (21) and a reducer (22) respectively mounted on two ends of the top outer wall of the support frame (20).

2. A grid-type underground pipe hole excavation device according to claim 1, characterized in that: A universal head (6) is provided between the drill rod (1), the connecting rod (2) and the driving rod (3), and the outer walls at both ends of the universal head (6) are respectively connected to one end of the drill rod (1), the connecting rod (2) and the driving rod (3).

3. The grid-type underground pipe hole excavation device according to claim 1, characterized in that: The mounting ring (9) is provided with an air bag (15) in the embedded groove, and the inner wall of the mounting ring (9) is provided with an annular air passage (11), and the air bag (15) is communicated with the annular air passage (11).

4. The grid-type underground pipe hole excavation device according to claim 1, characterized in that: The connecting rod (2) and the driving rod (3) are both provided with an air hole (4), and an air hole head (17) is welded to the connecting rod (2) and the driving rod (3) at one end of the air hole (4), a connecting pipe (16) is connected to the air hole head (17), and a fastening ring (18) is installed on the outer wall of the connecting pipe (16) located at the air hole head (17).

5. The grid-type underground pipe hole excavation device according to claim 1, characterized in that: An active cavity (12) is provided on the inner outer wall of the mounting ring (9) at the air hole (4) at the other end of the connecting rod (2), and a spring (13) is welded to the top end of the inner wall of the active cavity (12), a plug (14) is installed at the other end of the spring (13), and the active cavity (12) is connected to the annular airway (11).

6. The grid-type underground pipe hole excavation device according to claim 1, characterized in that: The output shaft of the motor (21) is connected to the input end of the reducer (22), and the output end of the reducer (22) is connected to one end of the driving rod (3) through a universal head (6); the driving rod (3) is rotatably connected to the outer wall of the other end of the air hole (4) with a sealing ring (19); an air pump (23) is installed on the top outer wall of the motor (21), and the output end of the air pump (23) is connected to the sealing ring (19).

7. A grid-type underground pipe hole excavation device according to claim 6, characterized in that: The air pump (23) and the motor (21) are connected to a switch via a wire, and the switch is connected to a power source via a wire.

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