Shallow square foundation pit one-time excavation drill bit

Abstract

The present invention discloses a one-time excavation drill bit for shallow square foundation pits, a drill bit body, a steel pipe is arranged outside the drill bit body, and a drill rod is arranged inside the steel pipe; the drill bit body is provided with a connection mechanism, a vibration mechanism, a hydraulic device and a drill bit mechanism from top to bottom, the drill bit mechanism includes a steel pipe, the lower end of the steel pipe is connected to a box body, a reinforcement structure is arranged around the connection position between the box body and the steel pipe, a cavity is arranged inside the box body and the steel pipe, a drill rod, a auger blade and a drill rod support are arranged inside the cavity, the lower end of the box body is in an arc shape, an alloy blade is installed at the arc shape, air holes are arranged at the four corners of the box body, a metal plug is arranged at the lower end of the air hole, and a quick connector is arranged at the upper end of the drill bit mechanism. This equipment can solve a series of fields that require excavation of shallow square, circular and special-shaped foundation pits, such as street lights, rainwater and sewage shafts, greening seedlings, traffic lights, solar panels, traffic signs, enclosure columns, etc. Advantages: one-time molding, no need to support formwork, saving time and effort, and saving materials.

Description

Technical Field

[0001] The invention relates to the fields of engineering machinery and building foundation construction, and more specifically to a one-time forming excavation drill bit for a shallow square foundation pit. Background Art

[0002] Traditional excavation drills cut through soil and rock layers, and eventually remove the rock cuttings through mud circulation or manual soil discharge. The existing technology lacks technology and equipment for a series of shallow square, circular, and special-shaped foundation pits that need to be excavated for: street lights, rainwater and sewage shafts, green seedlings, traffic lights, solar panels, traffic signs, fence columns, etc. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the prior art lacks technology and equipment for a series of shallow square, circular and special-shaped foundation pits that need to be excavated for: street lights, rainwater and sewage shafts, green seedlings, traffic lights, solar panels, traffic signs, fence columns, etc.

[0004] In order to solve the above technical problems, the present invention adopts the following technical means:

[0005] A one-time excavation drill bit for shallow square foundation pits includes a drill body, a steel pipe is arranged outside the drill body, and a drill rod is arranged inside the steel pipe; the drill body is provided with a connection mechanism, a vibration mechanism, a hydraulic device and a drill mechanism from top to bottom, and the drill mechanism includes a steel pipe, the lower end of the steel pipe is connected to a box body, and a reinforcement structure is arranged around the connection position between the box body and the steel pipe, and a cavity is arranged inside the box body and the steel pipe, and a drill rod, a auger blade and a drill rod support are arranged in the cavity, the lower end of the box body is in an arc shape, and an alloy blade is installed at the arc shape, and air holes are arranged at the four corners of the box body, and a metal plug is arranged at the lower end of the air hole, and a quick connector is arranged at the upper end of the drill mechanism. This equipment can solve a series of fields that require excavation of shallow square, round and special-shaped foundation pits, such as street lights, rainwater and sewage shafts, greening seedlings, traffic lights, solar panels, traffic signs, and enclosure columns. Advantages: one-time molding, no need to support formwork, saving time and effort, and saving materials.

[0006] Preferably, a further technical solution of the present invention is:

[0007] The reinforcement structure is a triangular reinforcement rib welded at the connection between the box body and the steel pipe to improve the force strength. The box body is in a square shape.

[0008] The drill rod support is a tripod support frame, and the auger blade is a segmented auger blade, which is arranged between a plurality of tripod support frames.

[0009] The quick connector is provided with an upper connecting part and a lower connecting part, a connecting groove is provided at a corresponding position of the upper connecting part, a connecting protrusion is provided at a corresponding position of the lower connecting part, the inner cavity of the quick connector is consistent with the diameter of the upper structure body, and the lower structure is the same diameter as the bottom of the box body.

[0010] The connecting mechanism is an excavator connecting head, a large-diameter seamless steel pipe is arranged at the lower end of the excavator connecting head, and a flange is welded at the lower end of the excavator connecting head.

[0011] The vibration mechanism is a hydraulic high-frequency vibrator, which is arranged on a vibrator base. The vibrator base has a reserved oil cylinder connecting hole, and flanges are arranged at both ends to be locked with upper and lower screws.

[0012] The hydraulic device comprises a hydraulic push rod cylinder, a hydraulic motor and a material bin bulldozer. The hydraulic push rod cylinder and the hydraulic motor are arranged above the base. A flange is arranged above the hydraulic device, a quick connector is arranged below the hydraulic device, and a tripod support frame is arranged inside the hydraulic device.

[0013] All the active supporting points of the drill body adopt thrust roller bearings, each node is provided with a lubricating oil passage, and the oil passage grease nozzle extends to the outer wall.

[0014] The steel tube wall of the hydraulic device is provided with an observation port.

[0015] The drill rod and the drill bit mechanism are directly connected with each other by using a spline shaft.

[0016] The present invention has the following characteristics:

[0017] The main body of this device is made of large-diameter seamless steel pipes and high-strength steel plates to ensure the durability of the structure.

[0018] It is driven by the hydraulic system of the excavator and a two-way foot valve control device is set in the cab. During the digging process: the excavator presses down, the hydraulic components work at the same time, the hydraulic push rod cylinder is lifted to the highest position, the hydraulic vibrator vibrates at a high frequency, the hydraulic motor rotates to drive the auger blades, and the auger drill bit rotates at high speed to crush the soil. The centrifugal force exerted on the soil vibration is greater than the friction between the soil and the surface of the spiral auger blades, and the soil rises along the auger blades to the material bin.

[0019] When digging until the material bin is full, the device stops moving and is lifted out of the foundation pit onto the dump truck that follows synchronously. The control valve starts the reverse action, the hydraulic cylinder push rod pushes back, the hydraulic motor reverses to drive the auger blades, and the hydraulic vibrator works at the same time, which can effectively reduce the adsorption of various types of soil on the inner wall of the device and complete the soil unloading process.

[0020] All hydraulic components of the device use the same hydraulic oil circuit, and each component is equipped with a set of hydraulic flow control valves to adjust the components to work synchronously.

[0021] The device body and the drill bit assembly drill rod are both hollow in design, with a water seal module arranged on the upper part, and a water injection port and water pipe extending outward to the outer wall of the main body.

[0022] The internal water channel leads to the top of the drill bit, allowing water to be injected while rotating.

[0023] This function can be used to inject water at the right time according to the soil structure of different construction conditions, which can effectively improve the drill bit's cutting and lifting capabilities for various types of soil and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the auger blade of the present invention.

[0026] Figure 3 It is a schematic structural diagram of the quick connector of the present invention.

[0027] Explanation of the reference numerals: 1 - excavator connector; 2 - hydraulic push rod cylinder; 3 - hydraulic high-frequency vibrator; 4 - bulldozer blade in the material bin; 5 - hydraulic motor; 6 - observation port; 7 - drill rod; 8 - drill rod support; 9 - alloy blade; 10 - quick connector; 11 - auger blade; 12 - air vent; 13 - triangular reinforcement rib; 14 - upper end connector; 15 - lower end connector. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the embodiments. Specific embodiment 1:

[0030] See also Figure 1 , Figure 2 , Figure 3It can be known that the one-time forming excavation drill bit for shallow square foundation pit of the present invention comprises a drill body, a steel pipe is arranged on the outside of the drill body, and a drill rod 7 is arranged in the steel pipe; the drill body is provided with a connecting mechanism, a vibration mechanism, a hydraulic device and a drill mechanism from top to bottom, the drill mechanism comprises a steel pipe, the lower end of the steel pipe is connected to a box body, a reinforcing structure is arranged around the connection position between the box body and the steel pipe, a cavity is arranged in the box body and the steel pipe, a drill rod 7, an auger blade 11 and a drill rod support 8 are arranged in the cavity, the lower end of the box body is in an arc shape, an alloy blade 9 is installed at the arc shape, air holes 12 are arranged at the four corners of the box body, and a metal plug is arranged at the lower end of the air hole 12, a quick connector 10 is arranged at the upper end of the drill mechanism, and the reinforcing structure is a triangular reinforcing rib 13 welded at the connection between the box body and the steel pipe to improve the force strength, the shape of the box body is square, the drill rod support 8 is a tripod support frame, the auger blade 11 is a segmented auger blade 11, and the segmented auger blade 11 is arranged between multiple tripod support frames. The connecting mechanism is an excavator connecting head 1, and a large-diameter seamless steel pipe is provided at the lower end of the excavator connecting head 1. A flange is welded at the lower end of the excavator connecting head 1. The vibration mechanism is a hydraulic high-frequency vibrator 3, and the hydraulic high-frequency vibrator 3 is arranged on the vibrator base. The vibrator base has a reserved cylinder connecting hole, and flanges are provided at both ends, which are locked with the upper and lower section screws. The hydraulic device includes a hydraulic push rod cylinder 2, a hydraulic motor 5, and a material bin bulldozer plate 4. The hydraulic push rod cylinder 2 and the hydraulic motor 5 are arranged above the base, and a flange is provided above the hydraulic device. A quick connector 10 is provided below the hydraulic device. A tripod support frame is provided in the hydraulic device. All active support points of the drill body use thrust roller bearings. Each node is provided with a lubricating oil passage, and the oil passage grease nozzle extends to the outer wall. An observation port 6 is reserved on the steel pipe wall of the hydraulic device. Specific embodiment 2:

[0032] See also Figure 3 It can be known that the one-time forming excavation drill bit for shallow square foundation pit of the present invention, the quick connecting head 10 is provided with an upper connecting part 14 and a lower connecting part 15, the upper connecting part 14 is provided with a connecting groove at a corresponding position, and the lower connecting part 15 is provided with a connecting protrusion at a corresponding position, the inner cavity of the quick connecting head 10 is consistent with the diameter of the upper structure body, and the lower structure is the same diameter as the bottom of the box. Specific embodiment 3:

[0034] See also Figure 1 It can be seen that the main assembly of the drill bit for excavating a shallow square foundation pit in one step of the device of the present invention is as follows:

[0035] It consists of three sections:

[0036] The upper section of the large-diameter seamless steel pipe is welded to the excavator connecting mechanism and a flange is provided at the lower end.

[0037] A vibrator base is arranged inside the middle section, a connecting hole for the oil cylinder is reserved, flanges are arranged at both ends, and the screws are locked with the upper and lower sections.

[0038] The lower section is provided with a hydraulic cylinder and a hydraulic motor 5 base, a bulldozer, a reserved observation port on the cylinder wall, a flange on the upper end, and a universal quick connector 10 on the lower end. A drill rod 7 tripod support is provided at the bottom.

[0039] Drill bit assembly:

[0040] A universal quick connector 10 is arranged at the upper end, and the inner cavity is conical, the upper part of which is consistent with the diameter of the device body, and the lower part is the same diameter as the bottom of the external square box.

[0041] Two tripod supports are provided inside to fix the drill rod 7 and the auger blades 11 (the auger blades 11 are arranged in sections, and the section between the tripod supports is one section). The soil rising resistance of the tripod supports can be ignored under the high speed, high torque and downward pressure of the hydraulic motor 4.

[0042] Triangular reinforcement ribs 13 are welded around the connection position between the standard square box and the steel pipe to improve the stress strength.

[0043] The lower end of the square box is in an arc shape and is equipped with an alloy blade 9, which can effectively reduce the resistance of cutting the foundation pit wall when the box falls.

[0044] Air holes 12 are arranged at the four corners of the box body, and metal plugs are arranged at the lower ends of the air holes 12. When the device is pressed down, the metal plugs are automatically closed when they come into contact with the soil. When the device is lifted, the metal plugs are automatically opened when there is no resistance from the soil, forming an air path, which effectively solves the adsorption force of the negative pressure inside the foundation pit on the drill assembly during the lifting of the device.

[0045] All active support points of the drill pipe 7 of the device are equipped with high-quality thrust roller bearings to ensure that the device can maintain long-term normal working capacity under high speed, high torque and high pressure. A lubricating oil passage is set at each node, and the oil passage grease nipple extends to the outer wall for routine maintenance.

[0046] Since the above description is only a specific implementation mode of the present invention, the protection of the present invention is not limited thereto, any equivalent changes or substitutions of the technical features of the technical solution that can be thought of by technicians in this technical field are covered within the protection scope of the present invention.

Claims

1. A one-time excavation drill bit for a shallow square foundation pit, comprising a drill bit body, a steel pipe is arranged outside the drill bit body, and a drill rod is arranged inside the steel pipe; the characteristics are: The drill body is provided with a connecting mechanism, a vibration mechanism, a hydraulic device and a drill mechanism from top to bottom, and the drill mechanism comprises a steel pipe, the lower end of the steel pipe is connected to a box body, and a reinforcing structure is provided around the connecting position of the box body and the steel pipe, a cavity is provided in the box body and the steel pipe, and a drill rod, an auger blade and a drill rod support are provided in the cavity, the lower end of the box body is in an arc shape, an alloy blade is installed at the arc shape, air holes are provided at the four corners of the box body, and a metal plug is provided at the lower end of the air hole, and a quick connecting head is provided at the upper end of the drill mechanism, and the reinforcing structure is a triangular reinforcing rib welded at the connection between the box body and the steel pipe to improve the force strength, the shape of the box body is square, the drill rod support is a tripod support frame, the auger blade is a segmented auger blade, and the segmented auger blade is arranged between a plurality of tripod support frames, and the quick connecting head is provided with an upper connecting part and a lower connecting part, a connecting groove is provided at the corresponding position of the upper connecting part, and a connecting protrusion is provided at the corresponding position of the lower connecting part, and a quick connecting head is provided. The inner cavity of the quick-connector is consistent with the diameter of the upper structure body, and the lower structure is the same diameter as the bottom of the box body. The connecting mechanism is an excavator connecting head, and a large-diameter seamless steel pipe is provided at the lower end of the excavator connecting head. A flange is welded at the lower end of the excavator connecting head. The vibration mechanism is a hydraulic high-frequency vibrator, which is arranged on the vibrator base. The vibrator base has a reserved cylinder connecting hole, and flanges are provided at both ends, which are locked with the upper and lower section screws. The hydraulic device includes a hydraulic push rod cylinder, a hydraulic motor, and a material bin bulldozer. The hydraulic push rod cylinder and the hydraulic motor are arranged above the base, a flange is provided above the hydraulic device, and a quick-connector is provided below the hydraulic device. A tripod support frame is provided in the hydraulic device. All active support points of the drill bit body adopt thrust roller bearings, and each node is provided with a lubricating oil passage, and the oil passage grease nozzle extends to the outer wall. An observation port is reserved on the steel pipe wall of the hydraulic device, and the drill rod and the drill bit mechanism are directly connected with a spline shaft.

Images