Special bored pile drilling machine for road and bridge construction

Abstract

The present invention discloses a bored pile drilling machine for road and bridge construction. The rotating plate can be placed horizontally above the fixed frame, and can also be turned 90 degrees and placed vertically outside the fixed frame. The right side of the rotating plate is equipped with a slide plate, a first motor, a support plate, a conveying auger, a first motor, and a limit cylinder. A soil outlet is provided on the upper side wall of the limit cylinder. The gap of the lower outer wall of the limit cylinder is provided with an orifice positioning baffle assembly. The lower end of the conveying auger extends outside the limit cylinder, and a drill bit is fixedly connected to the bottom end of the conveying auger. When the moving ring descends to the lowest position, all the arc plates and the alloy blades are just assembled into a complete panel. When the moving ring rises to the highest position, all the arc plates are separated from the alloy blades, so that a gap for soil to pass through is formed between the arc plates and the alloy blades. The drilling machine solves the problem that the drill bit of the common drilling machine is tilted due to unbalanced force, which affects the construction and there are a lot of impurities at the bottom when the drill bit is taken out, which affects the performance of the filling column.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, in particular to a bored pile drilling machine specially used for road and bridge construction. Background Art

[0002] Roads and bridges are generally composed of several parts, such as roadbed, pavement, bridges, tunnel engineering and traffic engineering facilities. When building roads and bridges, it is necessary to first use a drilling machine to drill holes and then make cast-in-place piles. Cast-in-place piles are a type of pile made by drilling holes in place and pouring concrete or reinforced concrete. Commonly used ones are: (1) bored cast-in-place piles: piles are made by using spiral drilling machines, submersible drilling machines, etc. to drill holes in situ and pour concrete. There is no vibration or soil squeezing during construction, but the settlement of the piles is slightly larger; (2) pipe sinking cast-in-place piles: steel pipes with reinforced concrete pile shoes or valve-type pile shoes are sunk into the soil by hammering or vibration, and then concrete is poured and the pipes are pulled out at the same time to form piles.

[0003] Due to the various components inside the soil, especially some hard substances, the density and force bearing capacity of each position are different. When drilling, the drill bit will tilt due to the unbalanced force on the horizontal plane, resulting in unqualified holes and affecting construction. In addition, after the drilling is completed, when the drill bit is taken out, a large amount of impurities will fall to the bottom of the drilled hole. During pouring, a large amount of impurities will enter the filling column, seriously affecting the performance of the filling column. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide a bored pile drilling machine specially used for road and bridge construction, so as to solve the problems of the drill bit tilting due to unbalanced force in common drilling machines, affecting construction, and a large amount of impurities at the bottom of the drill bit when it is removed, affecting the performance of the bored pile.

[0005] To this end, the technical solution adopted by the present invention is: a bored pile drilling machine for road and bridge construction, comprising a fixed frame, a turning frame and a rotating plate, wherein the left side of the rotating plate is rotatably connected to the fixed frame through the turning frame, so that the rotating plate can be placed horizontally above the fixed frame, and can also be turned 90 degrees and placed vertically outside the fixed frame;

[0006] A slide plate capable of sliding up and down is installed on the right side of the rotating plate through a track, a first motor and a support plate are installed on the right side of the slide plate in sequence, the top of the conveying auger passes through the support plate and is driven to rotate by the first motor, the top of the limiting cylinder is fixedly installed on the support plate, and the inner surface of the limiting cylinder is slidably connected to the inner surface of the conveying auger, a soil outlet is opened on the upper side wall of the limiting cylinder, an orifice positioning baffle assembly is set in the gap of the lower outer wall of the limiting cylinder, and the orifice positioning baffle assembly includes a first baffle larger than the borehole diameter, and a positioning cylinder whose outer wall matches the borehole diameter;

[0007] The lower end of the conveying auger extends out of the limiting cylinder, and a drill bit is fixedly connected to the bottom end of the conveying auger. The outer surface of the lower end of the conveying auger is fixedly provided with alloy blades that are evenly distributed in a circle and together form an inverted cone. The outer surface of the lower end of the conveying auger is also provided with a moving ring that can slide up and down, and the outer surface of the moving ring is fixedly connected with arc plates that match the number of alloy blades; when the moving ring drops to the lowest position, all the arc plates and the alloy blades are just assembled into a complete panel, and when the moving ring rises to the highest position, all the arc plates are separated from the alloy blades, thereby forming a gap between the arc plates and the alloy blades for soil to pass through.

[0008] As a preferred embodiment of the above scheme, the positioning cylinder includes an inner ring plate, an outer ring plate, a radial connecting rod and a lateral connecting rod. The two inner ring plates are arranged at intervals from top to bottom and are sleeved outside the limiting cylinder. Each inner ring plate is connected to the corresponding outer ring plate through a number of radial connecting rods evenly distributed around the circumference. The outer wall of the outer ring plate matches the diameter of the drill hole, and the opposite sides of the two outer ring plates are connected through the lateral connecting rod. The hollow structure with upper and lower sections connected and inner and outer rings connected can increase the height of the positioning cylinder, thereby increasing the contact area with the outer wall of the limiting cylinder and the inner wall of the drill hole, and reduce the overall weight.

[0009] Preferably, a second baffle is fixedly mounted outside the limiting cylinder, the second baffle is located below the soil outlet, and the diameter of the second baffle is smaller than the diameter of the first baffle. The second baffle is added to prevent the soil at the soil outlet from falling directly onto the first baffle.

[0010] More preferably, a second motor is fixedly mounted on the top of the rotating plate, and a screw rod is fixedly connected to the output end of the second motor through a coupling, and a threaded barrel is sleeved on the screw rod, and the threaded barrel is fixedly connected to the slide plate. The slide plate is lifted and lowered by a screw rod and nut mechanism, and the movement is smooth and reliable.

[0011] Further preferably, the output end of the first motor is fixedly connected to a first bevel gear through a coupling, the top end of the conveying auger is fixedly connected to a second bevel gear, and the first bevel gear and the second bevel gear are meshed for transmission. The bevel gear set is used to achieve motion steering, simplify the structure, reduce the occupied space, and make the overall structure compact and reasonable.

[0012] It is further preferred that four moving wheels and four hydraulic cylinders are installed at the bottom of the fixed frame, a support plate is fixed to the bottom end of each hydraulic cylinder, and a support rotating wheel is fixedly connected to the bottom of the rotating plate. The four moving wheels are convenient for the movement of the equipment when in contact with the ground, and the four hydraulic cylinders and four supporting plates cooperate to support the equipment, ensure that the position of the equipment is fixed, increase the bottom area of ​​the equipment, and improve the stability of the equipment; the bottom of the rotating plate is fixedly connected to the support rotating wheel, which provides support for the rotating plate, improves the stability of the equipment, and ensures that the drilling equipment remains in a vertical state.

[0013] Beneficial effects of the present invention:

[0014] (1) By inserting a hole positioning baffle assembly into the gap of the lower outer wall of the limiting cylinder, the hole positioning baffle assembly includes a first baffle larger than the diameter of the drill hole and a positioning cylinder whose outer wall matches the diameter of the drill hole, so as to ensure that the positioning cylinder can enter the drill hole, and the positioning cylinder is in close contact with the inner wall of the drill hole to limit the position, so as to ensure that the positioning cylinder remains in a vertical state, thereby preventing the drill bit from tilting due to unbalanced force, ensuring subsequent normal construction, and solving the common problem of the drill bit tilting due to unbalanced force of the drilling machine, which affects the construction.

[0015] (2) By threading the drill bit at the bottom of the conveying auger, the conveying auger and the limiting cylinder can work together to raise the impurities at the bottom of the borehole and discharge them through the soil outlet; the outer surface of the lower end of the conveying auger is fixed with alloy blades that are evenly distributed around the circumference and together form an inverted cone, as well as a moving ring that can slide up and down. When the moving ring drops to the lowest position, all the arc plates and the alloy blades are just assembled into a complete panel. When the moving ring rises to the highest position, all the arc plates are separated from the alloy blades, thereby forming a gap between the arc plates and the alloy blades for the soil to pass through. When drilling, the four arc plates are separated from the four alloy blades under the reaction of the soil, and the soil can move upward through the gap between the arc plates and the alloy blades. When the drill bit is removed, the arc plate moves downward due to the gravity of itself and the soil above, and the alloy blade contacts the arc plate to form a complete panel, bringing out the impurities that have not been completely discharged from the bottom, solving the problem that there are a lot of impurities at the bottom when the drill bit of the common drilling machine is removed, affecting the performance of the filling column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a top view of the connection structure of the conveying auger, alloy blade, arc plate and moving ring;

[0018] Figure 3 is a top view of the positioning cylinder;

[0019] Figure 4 for Figure 1 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0020] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0021] like Figure 1 — Figure 4As shown, a bored pile drilling machine specially used for road and bridge construction is mainly composed of a fixed frame 1, a turning frame 2, a rotating plate 3, a slide plate 4, a first motor 5, a support plate 6, a conveying auger 7, a limiting cylinder 8, a first baffle 9, a positioning cylinder 10, a drill bit 11, an alloy blade 12, a moving ring 13, an arc plate 14, a second baffle 15, a second motor 16, a screw 17, a threaded cylinder 18, a first bevel gear 19, a second bevel gear 20, four hydraulic cylinders 21, a supporting plate 22, a supporting rotating wheel 23, a fixed rotating shaft 24, a pad 25, and a moving wheel 26.

[0022] The left side of the rotating plate 3 is rotatably connected to the fixed frame 1 through the flip frame 2, so that the rotating plate 3 can be placed horizontally above the fixed frame 1, and can also be flipped 90 degrees and placed vertically outside the fixed frame 1.

[0023] In the specific configuration, the turning frame 2 is composed of a horizontal column 2a and an inclined column 2b. The inclined column 2b is located above the horizontal column 2a and forms a right triangle with the rotating plate 3. The left ends of the horizontal column 2a and the inclined column 2b are connected and can be rotatably mounted on the fixed shaft 24 above the fixed frame 1. When the turning frame 2 drives the rotating plate 3 to turn to a vertical state, the pad 25 above the fixed frame 1 is just supported under the horizontal column 2a. The turning frame 2 is equipped with a hydraulic cylinder as a turning driving power, but the structure and driving power of the turning frame are not limited to this. The pad 25 supports the drilling equipment through the turning frame 2, further ensuring that the drilling equipment remains in a vertical state and that the drilling direction does not tilt.

[0024] A slide plate 4 that can slide up and down is installed on the right side of the rotating plate 3 through a track. Preferably, a second motor 16 is fixedly installed on the top of the rotating plate 3, and a screw rod 17 is fixedly connected to the output end of the second motor 16 through a coupling, and a threaded barrel 18 is sleeved on the screw rod 17, and the threaded barrel 18 is fixedly connected to the slide plate 4. The second motor 16 drives the slide plate 4 to slide up and down along the track through a screw rod nut mechanism.

[0025] The right side of the slide plate 4 is sequentially mounted with a first motor 5 and a support plate 6. The support plate 6 is used to mount the conveying auger 7 and the limit cylinder 8. The top of the conveying auger 7 passes through the support plate 6 and is driven to rotate by the first motor 5. Preferably, the output end of the first motor 5 is fixedly connected to the first bevel gear 19 through a coupling, the top end of the conveying auger 7 is fixedly connected to the second bevel gear 20, and the first bevel gear 19 is meshed with the second bevel gear 20 for transmission, so that the first motor 5 drives the conveying auger 7 to rotate.

[0026] The top of the limiting cylinder 8 is fixedly mounted on the support plate 6, and the inner surface of the limiting cylinder 8 is slidably connected with the inner surface of the conveying auger 7 to form a screw conveying mechanism. A soil outlet 8a is provided on the upper side wall of the limiting cylinder 8, and an orifice positioning baffle assembly is set in the gap of the lower outer wall of the limiting cylinder 8. The orifice positioning baffle assembly can slide up and down relative to the limiting cylinder 8.

[0027] The orifice positioning baffle assembly includes a first baffle 9 larger than the borehole diameter, and a positioning cylinder 10 whose outer wall matches the borehole diameter. The positioning cylinder 10 is composed of an inner ring plate 10a, an outer ring plate 10b, a radial connecting rod 10c, and a lateral connecting rod 10d. The two inner ring plates 10a are arranged at intervals up and down and are sleeved on the outside of the limiting cylinder 8. Each inner ring plate 10a is connected to the corresponding outer ring plate 10b through a plurality of radial connecting rods 10c evenly distributed in a circumference. The outer wall of the outer ring plate 10b matches the borehole diameter and can be placed in the borehole. The opposite sides of the two outer ring plates 10b are connected by a lateral connecting rod 10d.

[0028] The lower end of the conveying auger 7 extends outside the limiting cylinder 8, and a drill bit 11 is fixedly connected to the bottom end of the conveying auger 7. The outer surface of the lower end of the conveying auger 7 is fixedly provided with alloy blades 12 that are evenly distributed around the circumference and together form an inverted cone. Preferably, there are four alloy blades 12.

[0029] The outer surface of the lower end of the conveying auger 7 is also provided with a movable ring 13 that can slide up and down, and the outer surface of the movable ring 13 is fixedly connected with arc plates 14 that match the number of alloy blades 12, that is, there are four arc plates 14. When the movable ring 13 is lowered to the lowest position, all the arc plates 14 and the alloy blades 12 are just assembled into a complete panel, and when the movable ring 13 is raised to the highest position, all the arc plates 14 are separated from the alloy blades 12, so that a gap for soil to pass through is formed between the arc plates 14 and the alloy blades 12.

[0030] Preferably, a second baffle plate 15 is fixedly mounted outside the limiting cylinder 8 , and the second baffle plate 15 is located below and close to the soil outlet 8 a , and the diameter of the second baffle plate 15 is smaller than the diameter of the first baffle plate 9 .

[0031] Four moving wheels 26 and four hydraulic cylinders 21 are installed at the bottom of the fixed frame 1 , a supporting plate 22 is fixed to the bottom end of each hydraulic cylinder 21 , and a supporting rotating wheel 23 is fixedly connected to the bottom of the rotating plate 3 .

[0032] During operation, the equipment is transported to the position where drilling is required by the moving wheels 26 under the fixed frame 1, and the four hydraulic cylinders 21 evenly distributed under the fixed frame 1 are turned on. The equipment is supported by the four supporting plates 22 under the four hydraulic cylinders 21, so that the moving wheels 26 under the fixed frame 1 are separated from the ground. The rotating plate 3 is rotated by the flip frame 2, so that the rotating plate 3 horizontally placed above the fixed frame 1 is flipped 90° and becomes vertical, and the horizontal column 2a is just pressed on the pad 25 above the fixed frame 1. The supporting wheel 23 at the bottom of the rotating plate 3 is in contact with the ground, and the rotating plate 3 remains vertical. The first motor 5 is turned on, and the first motor 5 drives the conveying auger 7 to rotate through the first bevel gear 19 and the second bevel gear 20, and the conveying auger 7 drives the drill bit 11, the alloy blade 12 and the arc plate 14 to rotate. The second motor 16 is turned on, and the second motor 16 drives the screw 17 to rotate. The screw 17 adjusts the height of the slide plate 4 through the threaded tube 18, so that the drill bit 11 and the alloy blade 12 contact the ground, and the drilling begins. The hole positioning baffle assembly enters the borehole except the first baffle 9, and after the first baffle 9 contacts the ground and covers the borehole, the hole positioning baffle assembly stops moving and remains at the top position of the borehole cavity. The arc plate 14 moves upward relative to the alloy blade 12 under the reaction force of the underground soil, and separates from the alloy blade 12. The soil moves upward relative to the alloy blade 12 through the gap between the arc plate 14 and the alloy blade 12, and then the spiral conveying mechanism composed of the conveying auger 7 and the limit tube 8 conveys the soil in the hole upward, and finally discharges it through the soil outlet 8a opened on the limit tube 8. When drilling is finished, the second motor 16 rotates in the opposite direction, driving the device away from the drilling hole. When the arc plate 14 rises, it moves downward due to the gravity of itself and the soil above, and finally contacts the alloy blade to form a complete panel, bringing out the impurities that have not been completely discharged from the bottom.

Claims

1. A bored pile drilling machine for road and bridge construction, comprising a fixed frame (1), a turning frame (2) and a rotating plate (3), wherein the left side of the rotating plate (3) is rotatably connected to the fixed frame (1) through the turning frame (2), so that the rotating plate (3) can be placed horizontally above the fixed frame (1) or can be turned 90° and placed vertically outside the fixed frame (1); the characteristics are: A slide plate (4) capable of sliding up and down is installed on the right side of the rotating plate (3) through a track, and a first motor (5) and a support plate (6) are installed on the right side of the slide plate (4) in sequence. The top of the conveying auger (7) passes through the support plate (6) and is driven to rotate by the first motor (5). The top of the limiting cylinder (8) is fixedly installed on the support plate (6), and the inner surface of the limiting cylinder (8) is slidably connected to the inner surface of the conveying auger (7). A soil outlet (8a) is provided on the upper side wall of the limiting cylinder (8). A hole positioning baffle assembly is installed in the gap of the lower outer wall of the limiting cylinder (8). The hole positioning baffle assembly comprises a first baffle (9) larger than the diameter of the drilled hole and a positioning cylinder (10) whose outer wall matches the diameter of the drilled hole. The lower end of the conveying auger (7) extends out of the limiting cylinder (8), and a drill bit (11) is fixedly connected to the bottom end of the conveying auger (7). The outer surface of the lower end of the conveying auger (7) is fixedly provided with alloy blades (12) that are evenly distributed in a circumference and together form an inverted cone. The outer surface of the lower end of the conveying auger (7) is also provided with a moving ring (13) that can slide up and down, and the outer surface of the moving ring (13) is fixedly connected with arc plates (14) that match the number of alloy blades (12); when the moving ring (13) descends to the lowest position, all the arc plates (14) and the alloy blades (12) are just assembled into a complete panel, and when the moving ring (13) rises to the highest position, all the arc plates (14) are separated from the alloy blades (12), thereby forming a gap between the arc plates (14) and the alloy blades (12) for soil to pass through.

2. A bored pile drilling machine for road and bridge construction according to claim 1, characterized in that: The positioning cylinder (10) comprises an inner ring plate (10a), an outer ring plate (10b), a radial connecting rod (10c) and a lateral connecting rod (10d); the two inner ring plates (10a) are arranged vertically and spaced apart and are sleeved on the outside of the limiting cylinder (8) with a gap; each inner ring plate (10a) is connected to the corresponding outer ring plate (10b) via a plurality of radial connecting rods (10c) evenly distributed in a circumference; the outer wall of the outer ring plate (10b) matches the diameter of the drilled hole, and the opposite sides of the two outer ring plates (10b) are connected via the lateral connecting rod (10d).

3. A bored pile drilling machine for road and bridge construction according to claim 2, characterized in that: A second baffle (15) is fixedly mounted outside the limiting cylinder (8), the second baffle (15) is located below and close to the soil outlet (8a), and the diameter of the second baffle (15) is smaller than the diameter of the first baffle (9).

4. The bored pile drilling machine for road and bridge construction according to claim 1 is characterized in that: A second motor (16) is fixedly mounted on the top of the rotating plate (3); an output end of the second motor (16) is fixedly connected to a screw rod (17) via a coupling; a threaded barrel (18) is sleeved on the screw rod (17), and the threaded barrel (18) is fixedly connected to the slide plate (4).

5. The bored pile drilling machine for road and bridge construction according to claim 1 is characterized by: The output end of the first motor (5) is fixedly connected to a first bevel gear (19) via a coupling, the top end of the conveying auger (7) is fixedly connected to a second bevel gear (20), and the first bevel gear (19) and the second bevel gear (20) are meshed for transmission.

6. The bored pile drilling machine for road and bridge construction according to claim 1, characterized in that: Four moving wheels (26) and four hydraulic cylinders (21) are installed at the bottom of the fixed frame (1), a supporting plate (22) is fixed at the bottom end of each hydraulic cylinder (21), and a supporting rotating wheel (23) is fixedly connected to the bottom of the rotating plate (3).

7. The bored pile drilling machine for road and bridge construction according to claim 1, characterized in that: The turning frame (2) comprises a horizontal column (2a) and an inclined column (2b). The inclined column (2b) is located above the horizontal column (2a) and forms a right triangle with the rotating plate (3). The left ends of the horizontal column (2a) and the inclined column (2b) are connected and can be rotatably mounted on a fixed rotating shaft (24) above the fixed frame (1). When the turning frame (2) drives the rotating plate (3) to turn to a vertical state, the pad (25) above the fixed frame (1) is just supported below the horizontal column (2a).

8. The bored pile drilling machine for road and bridge construction according to claim 1, characterized in that: There are four alloy blades (12) in total, and correspondingly, there are also four arc plates (14).

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