Hard plastic stratum high-spraying hole guiding device

Abstract

The utility model relates to a hard plastic stratum high-pressure spraying hole guiding device which comprises a matrix and a drill bit, the matrix is a vertical cylinder, cutting spokes are arranged on the periphery of the matrix, a connecting seat capable of being detachably connected with a drill rod is arranged at the top of the matrix, and a connector is arranged at the bottom of the matrix; the cutting spokes are in a straight rod shape and are arranged in the radial direction of the matrix, the near ends of the cutting spokes are connected with the matrix, and the far ends of the cutting spokes are suspended ends. A first wear-resistant block is arranged on the end surface of the suspended end; and the drill bit is detachably connected with the connector. Therefore, the requirement for the diameter of the HUW construction method pile guide hole can be met while the soil body is cut, and it is ensured that hard plastic stratum guide hole construction is conducted smoothly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of construction devices, especially a device applied to hard plastic stratum drilling, specifically a hard plastic stratum high jetting hole device. BACKGROUND

[0002] When HUW (H steel U steel continuous Wall, profile steel steel plate continuous wall) method pile is inserted in hard plastic stratum, it is often unable to smoothly implement insertion operation due to the characteristics of hard plastic stratum, and it is necessary to first guide hole and then implement method pile insertion operation. At present, there are many methods for guiding hole, including long spiral rod guiding hole and high jetting machine equipment guiding hole. When long spiral rod guiding hole is used, the problem of difficult to control the perpendicularity exists. Although the perpendicularity can be well controlled when high jetting machine equipment guiding hole is used, the diameter of high jetting machine drill bit is generally only Φ150mm, which cannot meet the requirement of diameter Φ700mm required for HUW method pile insertion. And the effect of air pressure assisted guiding hole method used by high jetting machine is not good in hard plastic stratum, which brings difficulties to the normal insertion operation of subsequent HUW method pile.

[0003] Therefore, it is urgent to design a device that can not only meet the requirement of guiding hole diameter required for normal insertion operation of HUW method pile, but also realize guiding hole operation in hard plastic stratum, so as to better meet the construction requirement. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems encountered in the insertion operation of HUW method pile in hard plastic stratum, and provides a hard plastic stratum high jetting hole device, which can not only meet the requirement of guiding hole diameter required for HUW method pile insertion, but also meet the requirement of perpendicularity required for HUW method pile insertion operation, to create favorable conditions for the smooth progress of construction.

[0005] The technical scheme of the utility model is:

[0006] A hard plastic stratum high jetting hole device, comprising a parent body and a drill bit, the parent body is vertically arranged in cylindrical shape, a chip flange is arranged on the outer periphery thereof, a connecting seat capable of detachably connecting with a drill rod is arranged on the top thereof, and a connecting head is arranged on the bottom thereof; the chip flange is in straight rod shape, is arranged along the radial direction of the parent body, the proximal end thereof is connected with the parent body, and the distal end thereof is a suspended end; a first wear-resistant block is arranged on the end face of the suspended end; the drill bit is detachably connected with the connecting head.

[0007] Further, the chip flange is two, which is symmetrically arranged along the center of the parent body.

[0008] Further, the end face of the overhanging end of the cutting spoke is ramp-shaped; the first wear block is semispherical and made of alloy material, and its plane is connected to the end face of the overhanging end of the cutting spoke.

[0009] Further, the first wear block is a plurality of blocks, which are uniformly distributed along the ramp direction of the end face of the overhanging end of the cutting spoke.

[0010] Further, the cutting spoke is internally provided with a main water channel; the main water channel is long-hole-shaped and is arranged along the length direction of the cutting spoke, and its outer end is closed, and its inner end is in communication with the connecting hole arranged in the connecting seat; a plurality of first water injection holes are arranged on the bottom face of the cutting spoke and penetrate the main water channel; a water / gas passage is arranged in the drill rod; the outlet of the water / gas passage is located at the front end of the drill rod and can be in abutment with the connecting hole.

[0011] Further, the lower end of the connecting head is a receiving male head; the receiving male head is polygonal in cross section, and is internally provided with a secondary water channel and is externally provided with a first mounting hole; the secondary water channel is vertically arranged, and its upper end is in communication with the main water channel, and its lower end is open on the bottom face of the connecting head.

[0012] Further, the drill head comprises a connecting body and a cutting head; the connecting body is cylindrical, and its upper end is a receiving female head, so that it can be sleeved on the connecting head; the side wall of the receiving female head is provided with a second mounting hole; the second mounting hole corresponds to the first mounting hole, so that a bolt is arranged on the first mounting hole and the second mounting hole to firmly connect the connecting body and the connecting head; the cutting head is a plurality of semispherical blocks made of alloy material, and its plane is connected to the bottom face of the connecting body; a second water injection hole is arranged in the gap between the cutting heads; the second water injection hole is vertically arranged, and its upper end is open in the receiving female head and corresponds to the lower end of the secondary water channel.

[0013] Further, the cutting head comprises a large cutting head and a small cutting head; the radius of the large cutting head is greater than the radius of the small cutting head; the large cutting head is a plurality of blocks, which are uniformly distributed at the middle position of the bottom face of the connecting body; the small cutting head is a plurality of blocks, which are uniformly distributed at the outer circumferential position of the bottom face of the connecting body; the large cutting head is provided with a second wear block; the second wear block is a spherical shell made of alloy material and wrapped on the surface of the large cutting head.

[0014] Further, the secondary water channel and the second water injection hole are a plurality of channels and a plurality of holes respectively, and the number of the secondary water channels is the same as the number of the second water injection holes.

[0015] The utility model discloses the following beneficial effects:

[0016] The utility model discloses a reasonable design, simple structure, convenient to use, through setting up cutting spoke and the first wear -resisting piece of alloy material, can expand the aperture while cutting the soil body, effectively satisfy the requirement of HUW method pile hole diameter. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model.

[0018] Figure 2 It is the structure schematic diagram of the utility model.

[0019] Figure 3 It is the structure schematic diagram of the utility model.

[0020] Figure 4 It is the bottom view of drill bit.

[0021] Figure 5 It is the schematic diagram of connecting drill pipe of the utility model.

[0022] Among them, 1-mother body;1-1-connection seat;1-2-connection head;1-3-connection hole;2-chip spoke;3-main water channel;4-first wear -resisting piece;5-first water jet hole;6-vice water channel;7-drill bit;7-1-connection body;7-2-second wear -resisting piece;7-3-large cutting head;7-4-small cutting head;8-second water jet hole;9-first mounting hole;10-second mounting hole;11-drill pipe;12-water / gas passage. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and examples.

[0024] As Figures 1-5 Indicated.

[0025] A kind of hard plastic stratum high spray hole device, including mother body and drill bit etc.

[0026] The mother body 1 is vertically arranged cylindrical, is made of cast iron material, its outer periphery is equipped with chip spoke 2, its top is equipped with the connection seat 1-1 that can be detachably connected with drill pipe 11, its bottom is equipped with connection head 1-2.

[0027] The connection seat 1-1 is taper hole, is connected with the taper screw rod of the front end of drill pipe 11 conveniently.

[0028] The cutting chip spoke 2 is a straight rod, made of cast iron, with a length of about 300 mm, a width of about 60 mm, and a thickness of about 35 mm. The cutting chip spoke 2 is arranged along the radial direction of the parent body 1, with its proximal end connected to the parent body 1 and its distal end being a free end. Preferably, there are two cutting chip spokes 2, arranged symmetrically along the center of the parent body 1, so as to improve the stability and efficiency of the cutting chip.

[0029] A first wear-resistant block 4 is arranged on the end face of the free end of the cutting chip spoke 2. The first wear-resistant block 4 is semispherical, with a diameter of about 35 mm, and is made of alloy material, so as to cut the stratum and expand the diameter of the pilot hole. Preferably, the end face of the free end of the cutting chip spoke 2 is ramp-shaped. The first wear-resistant block 4 is a plurality of blocks, uniformly distributed along the slope direction of the end face of the free end of the cutting chip spoke 2, so as to improve the cutting chip capability.

[0030] A main water channel 3 is arranged inside the cutting chip spoke 2. The main water channel 3 is a long hole, arranged along the length direction of the cutting chip spoke 2, with its outer end being closed and its inner end being in communication with the connecting hole 1-3 arranged in the connecting seat 1-1. At the same time, a plurality of first water injection holes 5 are arranged on the bottom surface of the cutting chip spoke 2, in communication with the main water channel 3, so as to spray the water introduced into the main water channel from the first water injection holes, forming hydraulic cutting. Preferably, the first water injection holes 5 are a plurality of holes, uniformly distributed along the length direction of the cutting chip spoke 2, so as to improve the cutting force.

[0031] The drill rod 11 is a conventional structure commonly used with a high-pressure jet machine in the art, usually made of Baosteel R780, with a diameter of Φ100 mm, and a tapered bolt at its front end, facilitating connection with the connecting seat. The drill rod 11 has a water / gas channel 12 arranged along its axial direction inside. The water / gas channel 12 has a diameter of about 30 mm, with its outlet located at the front end of the drill rod 11 and capable of being connected to the connecting hole 1-3. The inlet of the water / gas channel 12 is connected to an external high-pressure water source, so as to input high-pressure water into the main water channel 3 through the water / gas channel.

[0032] The connecting head 1-2 is a male connector, with a hexagonal cross section, a first mounting hole 9 arranged on its outer wall, and a secondary water channel 6 arranged inside. The secondary water channel 6 is arranged vertically, with its upper end in communication with the main water channel 3 and its lower end opening on the bottom surface of the connecting head 1-2.

[0033] The drill bit 7 comprises a connecting body 7-1 and a cutting head. The connecting body 7-1 is cylindrical with a diameter of about 150mm, made of cast iron, and has a female end on the upper end. The female end cooperates with the male end to facilitate the connection of the connecting body 7-1 to the connecting head 1-2. Meanwhile, the side wall of the female end is provided with a second mounting hole 10. The second mounting hole 10 corresponds to the first mounting hole 9, so that the connecting body 7-1 and the connecting head 1-2 are firmly connected by bolts, facilitating installation and replacement.

[0034] The cutting head comprises a large cutting head 7-3 and a small cutting head 7-4. Both the large cutting head 7-3 and the small cutting head 7-4 are hemispherical and made of alloy material. Moreover, the radius of the large cutting head 7-3 is larger than that of the small cutting head 7-4.

[0035] The large cutting head 7-3 is multiple and uniformly distributed at the middle position of the bottom surface of the connecting body 7-1. The small cutting head 7-4 is multiple and uniformly distributed at the outer circumferential position of the bottom surface of the connecting body. Thus, the demand for cutting soil can be effectively met. In this embodiment, both the large cutting head and the small cutting head are four.

[0036] The large cutting head 7-3 is provided with a second wear-resistant block 7-2. The second wear-resistant block 7-2 is spherical shell-shaped, made of alloy material, and wrapped around the surface of the large cutting head 7-3 to improve the wear resistance of the large cutting head.

[0037] The gap between the cutting heads is provided with a second water jet hole 8. The second water jet hole 8 is vertically arranged, with the upper end opening in the female end, and corresponds to the lower end of the auxiliary water channel 6, so as to guide the water in the main water channel into the auxiliary water channel, and then sprayed out through the second water jet hole, forming a hydraulic cutting in front of the drill bit.

[0038] The auxiliary water channel 6 and the second water jet hole 8 are multiple and have the same number, one-to-one corresponding, so as to improve the stability and working efficiency of operation.

[0039] The diameters of the first water jet hole 5 and the second water jet hole 8 are about 3mm. The diameter of the main water channel is about 15mm. The diameter of the auxiliary water channel 6 is about 3.5mm.

[0040] The working process of the utility model is as follows:

[0041] The drill bit is installed on the connecting head and fixed by bolts. The drill rod with the required length of the pilot hole depth is connected to the female body, and the water / gas channel is connected to the external water source.

[0042] The drill rod is started to drive the matrix to rotate, and the soil layer is drilled and the hole is guided through the rotation of the drill bit and the cutting chip spoke, so that the hole diameter requirement of the HUW pile is met.

[0043] Meanwhile, high-pressure water is introduced through the water / gas channel and sprayed through the first water spray hole and the second water spray hole, the hard plastic stratum is cut and softened, and the drill bit drills more labor-saving.

[0044] Therefore, the utility model can expand the hole diameter while cutting the soil body, effectively meet the requirements of the hole diameter of the HUW method pile.

[0045] The parts not involved in the utility model are the same as or can be realized by the prior art.

Claims

1. A hard plastic formation high-velocity jet hole opener comprising a matrix and a drill bit, characterized in that, The parent body is vertically arranged in a cylindrical shape, and is provided with a chip-removing spoke at the outer periphery, a connecting seat capable of detachable connection with a drill rod at the top, and a connecting head at the bottom; the chip-removing spoke is in a straight rod shape, is arranged along the radial direction of the parent body, and is connected with the parent body at the proximal end and has a free end at the distal end; a first wear-resistant block is arranged on the end face of the free end; the drill head is detachably connected with the connecting head.

2. The hard plastic stratum high-pressure jetting hole device according to claim 1, characterized in that, The chip-removing spoke is two, and is arranged symmetrically along the center of the parent body.

3. The hard plastic formation high-pressure jetting borehole device according to claim 1, characterized in that, The end face of the free end of the chip-removing spoke is in a slope shape; the first wear-resistant block is in a hemispherical shape, is made of alloy material, and is connected with the end face of the free end in a plane-to-surface manner.

4. The hard plastic formation high-pressure jetting window device according to claim 1, characterized in that, The first wear-resistant block is a plurality of, and is uniformly distributed along the slope direction of the end face of the free end of the chip-removing spoke.

5. The hard plastic formation high-pressure jetting window device according to claim 1, characterized in that, The inside of the chip-removing spoke is provided with a main water channel; the main water channel is in a long hole shape, is arranged along the length direction of the chip-removing spoke, has a closed outer end, and is in communication with a connecting hole arranged in the connecting seat at the inner end; a plurality of first water injection holes penetrating the main water channel are arranged on the bottom surface of the chip-removing spoke; a water / gas passage is arranged in the drill rod; the outlet of the water / gas passage is located at the front end of the drill rod, and is capable of being connected with the connecting hole.

6. The hard plastic formation high-pressure jetting borehole device according to claim 5, characterized in that, The lower end of the connecting head is a receiving male head, the inside of the connecting head is provided with a secondary water channel, and a first mounting hole is arranged on the outer wall of the connecting head; the secondary water channel is arranged vertically, the upper end of the secondary water channel is in communication with the main water channel, and the lower end of the secondary water channel is opened on the bottom surface of the connecting head.

7. The hard plastic formation high-pressure jetting borehole device according to claim 6, characterized in that, The drill head comprises a connecting body and a cutting head; the connecting body is in a cylindrical shape, the upper end of the connecting body is a receiving female head, so that the connecting body can be sleeved on the connecting head; a second mounting hole is arranged on the side wall of the receiving female head; the second mounting hole corresponds to the first mounting hole, so that a bolt is arranged on the first mounting hole and the second mounting hole to firmly connect the connecting body and the connecting head; the cutting head is a plurality of, and is in a hemispherical shape, is made of alloy material, and is connected with the bottom surface of the connecting body in a plane-to-surface manner; a second water injection hole is arranged in the gap between the cutting heads; the second water injection hole is arranged vertically, the upper end of the second water injection hole is opened in the receiving female head, and the lower end of the secondary water channel corresponds and matches the second water injection hole.

8. The hard plastic stratum high-pressure jetting hole device according to claim 7, characterized in that, The cutting head comprises a large cutting head and a small cutting head; the radius of the large cutting head is greater than the radius of the small cutting head; the large cutting head is a plurality of, and is uniformly distributed at the middle position of the bottom surface of the connecting body; the small cutting head is a plurality of, and is uniformly distributed at the outer peripheral position of the bottom surface of the connecting body; a second wear-resistant block is arranged on the large cutting head; the second wear-resistant block is in a spherical shell shape, is made of alloy material, and is wrapped on the surface of the large cutting head.

9. The hard plastic formation high-pressure jetting borehole device of claim 7, wherein, The secondary water channel and the second water injection hole are a plurality of, and the number of the secondary water channel and the second water injection hole is the same, and one-to-one correspondence.

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