CN210264709U

CN210264709U - Drilling device for pipe jacking construction

Info

Publication number: CN210264709U
Application number: CN201921174578.3U
Authority: CN
Inventors: 慕立强; 巩其云
Original assignee: Wuxi Tengchuang Electric Co Ltd
Current assignee: Wuxi Tengchuang Electric Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-04-07
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to a creep into device for in push pipe construction, it includes inlet tube, mud pipe and axle, and the axle runs through in a muddy water storehouse to fixed connection ribbon stirring leaf, muddy water storehouse both ends are storehouse body entry and storehouse body export respectively, and the inlet tube runs through muddy water storehouse upper portion inner wall and draws forth in storehouse body entrance department, and the one end that the mud pipe inhaled mud is located storehouse body exit. After the earth of excavation got into the drill bit, the utility model discloses the space of increase earth and the abundant contact of water improves earth degree of wetting and mobility to discharge the drill bit smoothly, thereby improve the excavation speed of push pipe construction.

Description

Drilling device for pipe jacking construction

Technical Field

The utility model belongs to the technical field of the technique of calandria environmental protection construction and specifically relates to a creep into device for in push pipe construction.

Background

The pipe jacking construction is that a pipeline is jacked into the soil in a working pit by means of jacking force generated by jacking equipment, earthwork is transported away, and pipes are sequentially jacked into the pipeline. The drilling device is used as a development facility of the pipeline and determines the construction advancing efficiency. The existing Chinese patent with the publication number of CN205117350U discloses a pipe jacking drilling device, which comprises a drilling disk, a water inlet pipe and a mud discharging pipe. The device is under the propulsion of instrument pipe, and the drilling disc constantly rotates, smashes the earth of propelling face and makes it loose, and the inlet tube is wet earth of continuous intaking, and the mud pipe is constantly taken out the muddy water after mixing, and this in-process only needs to keep certain muddy water balance in muddy water storehouse, and the drilling device can constantly advance under the rotation of drilling disc. However, the water inlet pipe of the device is close to the mud discharging pipe and is positioned on the same plane, and water flowing out of the water inlet pipe does not fully contact with soil and then flows out of the mud discharging pipe, so that the water does not have enough space to fully wet the partially smashed soil, and the mud discharging pipe is blocked by the caking, so that the drilling efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a creep into device for in push pipe construction, after the earth of excavation got into the drill bit, the contact space of increase and water to improve earth wettability and excavate efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a creep into device for in push pipe construction, includes inlet tube, mud pipe and axle, and the axle runs through in a muddy water storehouse to fixed connection ribbon stirring leaf, muddy water storehouse both ends are storehouse body entry and storehouse body export respectively, and the inlet tube runs through muddy water storehouse upper portion inner wall and draws out at storehouse body entrance, and the one end that the mud pipe inhaled mud is located storehouse body exit.

By adopting the technical scheme, the excavated soil is wetted by the water in the water inlet pipe at the inlet of the bin body, is fully stirred by the spiral stirring blades in the muddy water bin, and the spiral stirring blades convey the muddy water to the outlet of the bin body and discharge the muddy water from the mud discharge pipe. The outlet of the water inlet pipe and the mud sucking port of the mud discharging pipe are respectively positioned at two ends of the mud water bin, the mud has enough space to be wetted in the mud water bin, the fluidity of the mud water is increased, the whole drilling process is smoother, and the drilling efficiency of the pipe jacking construction is improved.

The utility model discloses further set up to: the device also comprises a drilling disk which is a cone.

Through adopting above-mentioned technical scheme, the propulsive force of cone drill bit ability increase drill bit reduces the resistance of meeting.

The utility model discloses further set up to: the side surface of the drilling disk is provided with a net-shaped grid, and the distance between concentric circles on the grid is gradually narrowed from the top point to the bottom.

Through adopting above-mentioned technical scheme, make earth leak into the further processing in the drill bit from the grid, the earth that leaks into in every grid is balanced, reduces the pressure of tip portion.

The utility model discloses further set up to: the top of the grid is provided with a main drill edge, and the intersection is provided with an auxiliary drill edge.

By adopting the technical scheme, the auxiliary drill blade assists the main drill blade to increase the tunneling force of the drill disk.

The utility model discloses further set up to: the auxiliary drill edge is a tungsten steel alloy tool bit.

Through adopting above-mentioned technical scheme, the tungsten steel alloy tool bit is harder, can break up great more firm earth, strengthens the tunnelling efficiency.

The utility model discloses further set up to: a baffle plate for preventing the water inlet pipe from being blocked is arranged at the outlet of the water inlet pipe led out from the bin body inlet.

Through adopting above-mentioned technical scheme, when the earth of excavation passes through storehouse body entry, the inlet tube that exposes outside is easy to be blockked up by earth, and the baffle can be protected inlet tube play gauze mask in the baffle, makes hydroenergy continuous follow inlet tube outflow.

The utility model discloses further set up to: the baffle is five confined cuboid covers, and open-ended one side is down.

By adopting the technical scheme, water in the water inlet pipe flows down from the opening of the baffle plate to fully wet soil; other closed surfaces block the soil entering from the head side, so that the soil is prevented from blocking the water inlet pipe, and water flows out smoothly.

The utility model discloses further set up to: the bin body outlet is connected with a drill bit bottom plate, and a water inlet pipe support used for supporting a water inlet pipe is arranged outside the drill bit bottom plate.

Through adopting above-mentioned technical scheme, make the inlet tube draw to storehouse body top under the support of inlet tube support, it is more firm to fix moreover.

To sum up, the utility model discloses a beneficial technological effect does:

1. the water inlet pipe is positioned at the inlet of the bin body to wet soil, the soil is stirred by the helical ribbon type stirring blades and is conveyed to the port of the sludge discharge pipe, the outlet of the water inlet pipe and the port of the sludge discharge pipe are respectively positioned at two ends of the muddy water bin, the muddy water bin provides enough space to wet the soil, the fluidity of the soil is improved, and the tunneling speed is increased;

2. the conical drill disk provided with the main drill blade and the auxiliary drill blade reduces the resistance and increases the propelling force of the drill bit;

3. the water inlet pipe support supports the water inlet pipe to stabilize the water inlet pipe.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a front view of the embodiment.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of the structure of the bit floor.

Fig. 5 is a schematic view of the structure of the water inlet baffle.

In the figure, 1, a drill bit; 11. drilling a disc; 12. a muddy water bin; 121. a bin body; 1211. a bin body inlet; 1212. a bin body outlet; 122. a helical ribbon type stirring blade; 13. a drill floor; 131. a chassis; 132. a water inlet pipe bracket; 1321. a first pipe frame; 1322. a second pipe frame; 2. a dredging device; 21. a water inlet pipe; 211. an outlet of the water inlet pipe; 22. a sludge discharge pipe; 3. a shaft; 4. a grid; 51. A main drill edge; 52. a secondary drill edge; 6. A cavity; 7. a baffle plate; 81. a first circular hole; 82. a second circular hole; 9. a lumen.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, it is the utility model discloses a creep into device for in push pipe construction, including drill bit 1, pull throughs 2 and axle 3. The drill bit 1 comprises a drill plate 11, a mud bin 12 and a drill bit bottom plate 13, wherein the drill plate 11 is communicated through a shaft 3. The drill plate 11 is connected to one end of the muddy water bin 12, and the other end of the muddy water bin 12 is connected with the drill base plate 13. The dredging device 2 comprises a water inlet pipe 21 and a sludge discharge pipe 22 which are connected to the drill bit 1.

Referring to fig. 2, the drill plate 11 is provided as a cone to increase the thrust of the drill bit 1 and reduce the head-on resistance. The grid 4 in a net shape is scattered and arranged by taking the top point of the drill disk 11 as the center, the grid 4 is made of steel plates, the distance between concentric circles on the grid 4 is gradually narrowed from the top point to the bottom, so that the soil leaking into each grid 4 is balanced, and the tip part cannot be subjected to too large pressure. The main drill edge 51 is arranged at the vertex of the drill disk 11, the auxiliary drill edge 52 is arranged at the intersection point of the grids 4 by taking the main drill edge as the center, the auxiliary drill edge 52 adopts a tungsten steel alloy cutter head and is used for scattering large and firm soil, and the auxiliary drill edge 52 assists the main drill edge 51 to increase the tunneling force.

Referring to fig. 2 and 3, the muddy water sump 12 is composed of a sump body 121 and a helical ribbon type stirring blade 122. The cartridge body 121 has a cartridge body inlet 1211 and a cartridge body outlet 1212 which are cylindrical in shape. The diameter of the circular end face of the bin body 121 is the same as that of the drill plate 11, and the drill plate are tightly connected through a cavity 6, so that soil excavated by the drill plate 11 directly enters the muddy water bin 12 after being temporarily stored in the cavity 6 through the grid 4. The muddy water bin 12 has thick outer wall to hold the water inlet pipe 21, and the top inner wall of the bin body 121 extends from the outside of the bin body 121 to the bin body inlet 1211 to form a pipe cavity 9 through which the water inlet pipe 21 passes to make water flow down from the bin body inlet 1211.

The helical ribbon type stirring blade 122 rotates in the bin body 121 along the same axis 3 with the drill plate 11 in the opposite direction of the helical ribbon extension, and can fully stir the moist soil entering from the bin body inlet 1211 and convey the moist soil to the bin body outlet 1212. The outlet 1212 of the bin body is provided with a mud discharging pipe 22, so that the wetted mud can be fully stirred in the space of the bin body 121 and then discharged out of the mud-water bin 12. The cartridge body outlet 1212 is connected to the bit floor 13.

Referring to fig. 4, the bit base plate 13 includes a bottom plate 131 and a water inlet pipe bracket 132, and the shaft 3 extends from the center of the bottom plate 131 to the outside of the bit 1 through. The bottom plate 131 is a solid circular plate, and has a second circular hole 82 with the same diameter as the sludge discharge pipe 22 at the bottom. The mud pipe 22 is connected to the bit base plate 13 from the outside of the bit 1 through the second round hole 82, and the mud water is pumped out through the second round hole 82. The upper part of the cartridge body 121 is provided with a communication port of the lumen 9, i.e. a first circular hole 81. The inlet pipe support 132 is arranged on the chassis 131 outside the drill bit 1, the inlet pipe support 132 is composed of a first horizontal pipe support 1321 and a second vertical pipe support 1322, the two second pipe supports 1322 vertically support the inlet pipe 21 at a certain interval, one end of the first pipe support 1321 is fixed below the first round hole 81, and the other end of the first pipe support 1321 is connected with the second pipe support 1322. The first pipe support 1321 is supported together with the second pipe support 1322 to stabilize the inlet pipe support 132, and the inlet pipe 21 is guided to the top by the support of the inlet pipe support 132.

Referring to fig. 5, the top of the bin body 121 is provided with a water inlet pipe outlet 211, a cuboid baffle 7 is connected outwards from the water inlet pipe outlet 211, the baffle 7 is a cover with only five surfaces, the water inlet pipe outlet 211 is covered, and one surface with an opening faces downwards, so that water in the water inlet pipe 21 flows downwards from the upper part to fully wet soil; other closed surfaces of the baffle 7 block the soil entering from the head-on, so that the soil is prevented from blocking the water inlet pipe 21, and the water flows out smoothly.

The implementation principle of the embodiment is as follows: after the drilling device is started, the main drill blade 51 and the auxiliary drill blade 52 are driven by the shaft 3 to break the earth and stones on the drilling surface. Excavated soil leaks through grid 4 of drilling rig 11 into cavity 6 where it is wetted by water in inlet pipe 21 at bin inlet 1211. The wetted mud is then sufficiently stirred by the helical stirring blades 122 in the mud-water bin 12 and conveyed to the bin outlet 1212, and the stirred mud-water is discharged out of the drill bit 1 through the mud discharge pipe 22.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a creep into device for in push pipe construction, including inlet tube (21), mud pipe (22) and axle (3), a serial communication port, axle (3) run through in a muddy water storehouse (12) to fixed connection ribbon stirring leaf (122), muddy water storehouse (12) both ends are storehouse body entry (1211) and storehouse body export (1212) respectively, inlet tube (21) run through muddy water storehouse (12) upper portion inner wall and draw forth in storehouse body entry (1211) department, mud pipe (22) inhale the one end of mud and be located storehouse body export (1212) department.

2. A drilling device for push pipe construction according to claim 1, further comprising a drilling disc (11), wherein the drilling disc (11) is cone-shaped.

3. A drilling device for pipe jacking according to claim 2, wherein the side of the drill plate (11) is provided with a net-shaped grid (4), and the distance between concentric circles on the grid (4) gradually narrows from the top to the bottom.

4. A drilling device for push pipe construction according to claim 3, characterized in that the grid (4) is provided with a main drill (51) at the apex and a sub-drill (52) at the intersection.

5. A drilling device for push pipe construction according to claim 4, wherein the secondary drill edge (52) is a tungsten steel alloy bit.

6. A drilling device for pipe jacking according to claim 1, wherein a baffle (8) for preventing the water inlet pipe (21) from being blocked is provided at the outlet (211) of the water inlet pipe leading from the inlet (1211) of the storage body.

7. A drilling device for pipe jacking according to claim 6, wherein said baffle (8) is a cuboid housing with five closed sides, the open side facing downwards.

8. The drilling device for pipe jacking construction according to claim 1, wherein the bin outlet (1212) is connected to a drill head base plate (13), and a water inlet pipe support (132) for supporting the water inlet pipe (21) is arranged outside the drill head base plate (13).