Rotary drilling machine drill bit soil unloading transport vehicle for cast-in-situ bored pile construction

Abstract

The utility model discloses a rotary drilling machine drill bit soil unloading transport vehicle for cast-in-situ bored pile construction, which comprises a vehicle body and a carriage arranged on one side of the tail part of the vehicle body, and is characterized by further comprising a water storage tank, a high-pressure water pump, a hydraulic power system and a drill bit soil unloading assembly which are arranged on the other side of the tail part of the vehicle body, the drill bit soil unloading assembly comprises a base fixed to the tail of the vehicle body, a spiral soil unloading device, a soil collecting assembly and a hydraulic jacking assembly arranged on the base and used for controlling the spiral soil unloading device and the soil collecting assembly to ascend and descend synchronously. The utility model not only solves the problem of construction noise caused by shaking of a drill bit during soil unloading of the rotary drilling machine, can ensure civilized construction in the whole deslagging process, but also can directly collect, clear and transport the unloaded soil body, realizes'full storage 'of the unloaded muck of the rotary drilling machine, and solves the problem of poor image of civilized construction of a site during pile foundation construction.

Description

Technical Field

[0001] The utility model relates to a soil discharging device for a rotary drilling bucket of a rotary drilling rig, in particular to a soil discharging transport vehicle for a drill bit of a rotary drilling rig used for bored cast-in-place pile construction. Background Art

[0002] A rotary drilling rig is a construction machine used for hole forming operations in building foundation projects. During the construction of a rotary drilling rig, whenever the drill bit is filled with soil, the drill must be lifted to discharge the soil in order to keep the rotary drilling rig performing efficient and accurate drilling operations. At present, in the prior art, the soil discharging operation of a rotary drilling rig drill bit is usually carried out in the following ways: by operating the drill bucket of the rotary drilling rig to perform forward and reverse rotation alternately to impact and throw the soil, or by using an emergency braking measure during rotation to shake out the drill cuttings adhering to the inner wall of the drill bucket. However, the above methods will generate a lot of noise, which not only pollutes the construction environment, but also the phenomenon of disturbing residents is very prominent, especially affecting the physical and mental health of the elderly and children in the nearby residents. In addition, when the rotary drilling rig is used for excavation construction in a clay stratum, due to the large water content and high viscosity of the soil in the clay stratum, the soil is easily adhered to the inner wall of the drill bit, thus increasing the difficulty of discharging soil and slag from the clay stratum.

[0003] In order to improve the defects of the above technical solutions, the prior art has proposed the following two improvement solutions: First, the top-push type drill bucket slag discharging only needs to generate a continuous pushing force by lifting the drill bucket to contact with the power pressure plate of the rotary drilling rig to complete the slag discharging. The power head of the drilling rig pushes down the upper bearing plate of the drill bucket, and the bearing plate pushes the slag discharging plate built in the drill bucket to move downward through the force transmission rod, so as to completely push out the slag and soil adhering to the inner wall of the drill bucket. However, this technology is easily stuck by hard impurities such as broken stones mixed in the soil layer during the top-pushing process of the drill bucket, thus affecting the slag discharging effect, and it is easy for the soil to enter between the slag discharging plate and the top plate of the drill bucket during the downward movement and reset process of the slag discharging plate, making it difficult to clean, affecting the soil taking efficiency of the rotary drill, and its practicability is poor. Second, the disturbing core and disturbing wings are used to passively disturb the clay in the drill cylinder to make it loose and easy to shake off, which can save the time of shaking the drill cylinder. However, during the soil discharging operation of this technology, the disturbing wings need to rely on the rotation and shaking operation of the drill bucket to complete the soil discharging. During the rotation of the drill bucket, affected by the height of the soil discharging device and the soil and slag on the ground, the drill bit will still generate noise, and it requires a higher requirement for the operator. When the operator operates improperly, it is also easy to cause the disturbing core to fall and be damaged, and its practicability is also poor.

[0004] Based on the above, it can be seen that the traditional method of alternately impacting and discharging soil by rotating the drilling bucket with a rotary drilling rig does not meet the requirements of green construction. Although the improved technical solution can reduce the noise generated by the soil discharging operation to a certain extent, its practicability is poor and it is difficult to promote and utilize. Moreover, when discharging soil in the above manner, the discharged muck is usually directly dumped on the construction site, and it is still necessary to cooperate with muck trucks and excavators to clean and transport the discharged muck, thus increasing the handling cost of the soil discharging operation of the rotary drilling rig bit. Utility Model Content

[0005] In view of the above problems, the present utility model provides a soil discharging transport vehicle for a rotary drilling rig bit used in bored pile construction. It adopts a drill bit soil discharging assembly that can actively rotate and lift to interfere with the soil inside the drill bit, making it loose and fall, thus solving the construction noise problem caused by the drill bit shaking during soil discharging of the rotary drilling rig, ensuring civilized construction during the entire muck discharging process. At the same time, the present utility model can also scrape and remove the sticky soil on the inner wall of the drill bit and clean the inner wall of the drilling bucket, with stronger flexibility and functionality in use; in addition, the present utility model can directly collect and transport the discharged soil, realizing the "full acceptance" of the muck discharged from the rotary drilling rig and solving the pain point of poor civilized construction image at the construction site during pile foundation construction.

[0006] The present utility model is realized through the following technical solutions.

[0007] A soil discharging transport vehicle for a rotary drilling rig bit used in bored pile construction, comprising a vehicle body, a carriage arranged on one side of the tail of the vehicle body, and is characterized in that it further comprises: a water storage tank, a high-pressure water pump, a hydraulic power system and a drill bit soil discharging assembly arranged on the other side of the tail of the vehicle body;

[0008] The drill bit soil discharging assembly comprises a base fixed to the tail of the vehicle body, a screw soil discharger, a soil collecting assembly, and a hydraulic lifting assembly arranged on the base for controlling the synchronous lifting of the screw soil discharger and the soil collecting assembly;

[0009] The hydraulic power system is connected to the hydraulic lifting assembly to provide hydraulic power for the hydraulic lifting assembly; the water inlet pipe of the high-pressure water pump is communicated with the water storage tank;

[0010] The screw unloader includes a chassis fixedly connected to the jacking end of the jacking assembly, a motor installed in the chassis, a vertically arranged unloading shaft, spiral blades and bulldozer blades arranged on the unloading shaft from top to bottom, an inner wall scraper detachably arranged on the outer side of the spiral blade along the vertical direction, a water delivery channel, and a plurality of high-pressure nozzles; the unloading shaft rotates from top to bottom in sequence to penetrate the soil collecting box and the chassis, and its bottom is connected to the output end of the motor; the water delivery channel is arranged along the axis of the unloading shaft, and the upper end of the water delivery channel is blocked, and the lower end is sealed and rotatably connected to the outlet pipe of the high-pressure water pump; a plurality of high-pressure nozzles are arranged on the unloading shaft and communicated with the water delivery channel; the bulldozer blade is rotatably accommodated in the bottom of the soil collecting box, and the bottom of the bulldozer blade is movably fitted with the inner wall of the bottom of the soil collecting box;

[0011] The soil collecting component comprises a soil collecting box fixedly arranged on the chassis and located below the spiral blade, and a soil guide groove; the soil guide groove is obliquely arranged at the bottom of the soil collecting box, and its higher end soil outlet is connected to one side of the bottom of the soil collecting box, and the lower end is connected to one side of the carriage.

[0012] Preferably, the spiral soil unloader also includes a conical soil guide head arranged on the top of the soil unloading shaft.

[0013] Preferably, the hydraulic jacking assembly includes a hydraulic jacking cylinder fixedly mounted on the base, and a sliding telescopic sleeve rod arranged at the corner end of the base.

[0014] Preferably, a groove and a scraper mounting screw hole are provided on the spiral outer side of the spiral blade, and a plurality of pairs of ear plates are provided on one side of the inner wall scraper, and ear holes matching with the scraper mounting screw holes are provided on the ear plates.

[0015] Preferably, the inner wall scraper includes a fixed end scraper and a working end scraper; one side of the fixed end scraper is detachably engaged with the card slot, and the other side is detachably connected to the working end scraper, and the working end scraper is made of rubber.

[0016] Preferably, a portion of the high-pressure nozzles are arranged on the soil unloading shaft where the spiral blades are located, and another portion of the high-pressure nozzles are distributed on the soil unloading shaft where the soil collecting box is located, and a valve is provided on the water supply channel where the soil collecting box and the spiral blades meet.

[0017] Preferably, the high-pressure nozzle located at the position where the spiral blade is located is arranged in the middle of two adjacent spiral teeth on the soil unloading shaft.

[0018] Preferably, the top of the soil collecting box is in an inverted cone shape, and the inner wall of the soil collecting box is a smooth surface.

[0019] Preferably, the motor is a bidirectional motor, and an inspection port is provided on one side of the chassis, and a detachable grille plate is installed on the inspection port.

[0020] Preferably, the drill bit soil discharging assembly is arranged at the outermost side of the tail of the vehicle body away from the vehicle head; the carriage is a tipping carriage.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] (1) The present utility model assists the rotary drilling rig in soil discharging through "active" operation, which can discharge soil more conveniently and efficiently. Moreover, during the soil discharging process, the drill bit of the rotary drilling rig does not need to swing the bucket or rotate, which can fundamentally reduce the source of construction noise of the rotary drilling rig, so as to achieve low-noise green construction of the rotary drilling rig.

[0023] (2) When using the present utility model to discharge soil from the drill bucket, the discharged muck will not be thrown onto the construction site, but will be completely collected into the carriage through the soil collecting assembly, and the vehicle body can be used for rapid transportation and cleaning, realizing the "full acceptance" of the muck discharged from the rotary drilling rig. This not only improves the safety and civilized construction image of the construction site of the rotary drilling rig, but also does not require the cooperation of muck trucks and excavators to transport and clean the muck throughout the process, greatly reducing the soil discharging operation treatment cost of the drill bit of the rotary drilling rig.

[0024] (3) The soil discharging transport vehicle for the drill bit of the present utility model is not only movable, so as to flexibly receive the position of the drill bit of the rotary drilling rig and quickly transport and clean the collected soil mass, but also can realize various functions such as discharging the soil mass in the drill bit, scraping the sticky soil on the inner wall of the drill bit, and cleaning the inner wall of the drill bucket, etc., and has good practical and popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 is the front view structural schematic diagram of the present utility model;

[0027] Figure 2 is the top view structural schematic diagram of the present utility model;

[0028] Figure 3 is Figure 1 the sectional view at A-A in;

[0029] Figure 4 is the structural schematic diagram of the drill bit soil discharging assembly;

[0030] Figure 5 is Figure 4 the sectional view at B-B in;

[0031] Figure 6 is the structural schematic diagram of the drill bit soil discharging assembly after installing the inner wall scraper;

[0032] Figure 7 It is a schematic three-dimensional structure diagram of the inner wall scraper;

[0033] Figure 8 It is a schematic diagram when using the present utility model to unload soil from the drill bit;

[0034] Figure 9 It is a schematic diagram when the blade is being screwed into the bucket;

[0035] Figure 10 It is a schematic diagram when the blade is being unscrewed to unload soil;

[0036] Figure 11 It is a schematic diagram when scraping the wall to unload soil;

[0037] Figure 12 It is a schematic diagram during the cleaning operation of the inner wall of the drill bucket;

[0038] The meanings represented by the grids in the above figures are as follows: vehicle body 1, carriage 2, water storage tank 3, high-pressure water pump 4, water outlet pipe 401, water inlet pipe 402, hydraulic power system 5, drill bit soil unloading assembly 6, base 601, screw soil unloader 602, chassis 6021, grille plate 60211, earth-pushing blade 6022, motor 6023, soil unloading rotating shaft 6024, screw blade 6025, card slot 60251, scraper installation screw hole 60252, inner wall scraper 6026, fixed-end scraper 60261, working-end scraper 60262, ear plate 60263, water delivery channel 6027, valve 60271, high-pressure spray head 6028, conical soil guiding head 6029, soil collection assembly 603, soil collection box 6031, soil chute 6032, soil chute opening 6033, hydraulic lifting assembly 604, hydraulic lifting cylinder 6041, sliding telescopic sleeve rod 6042, drill bucket 7, soil mass 8, rotary excavator 9, clean water 10. Detailed implementation manners

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0040] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Embodiment 1

[0043] A swivel drill bit soil unloading transport vehicle for bored cast-in-place pile construction, please refer to Figures 1 to 6 , which includes a vehicle body 1, a carriage 2 provided on one side of the tail of the vehicle body 1, a water storage tank 3, a high-pressure water pump 4, a hydraulic power system 5 and a drill bit soil unloading assembly 6 provided on the other side of the tail of the vehicle body 1;

[0044] The drill bit soil unloading assembly 6 includes a base 601 fixed to the tail of the vehicle body 1, a screw soil unloader 602, a soil collection assembly 603, and a hydraulic lifting assembly 604 provided on the base 601 for controlling the synchronous lifting and lowering of the screw soil unloader 602 and the soil collection assembly 603;

[0045] The hydraulic power system 5 is connected to the hydraulic lifting assembly 604 to provide hydraulic power for the hydraulic lifting assembly 604; the water inlet pipe 402 of the high-pressure water pump 4 is communicated with the water storage tank 3;

[0046] The spiral earth unloader 602 includes a chassis 6021 fixedly connected to the jacking end of the jacking assembly 604, a motor 6023 installed in the chassis 6021, a vertically arranged earth unloading shaft 6024, a spiral blade 6025 and a bulldozer blade 6022 arranged on the earth unloading shaft 6024 from top to bottom, an inner wall scraper 6026 detachably arranged on the outer side of the spiral of the spiral blade 6025 along the vertical direction, a water delivery channel 6027, and a plurality of high-pressure nozzles 6028; the earth unloading shaft 6024 rotates from top to bottom in sequence, penetrates the soil collecting box 6031, the chassis 6021 is arranged, and its bottom is connected to the output end of the motor 6023, so that the earth unloading shaft 6024 can be driven to rotate by the motor 6023, and then synchronously drives the spiral blade 6025 and the bulldozer blade 6022. The soil blade 6022 rotates; the bulldozer blade 6024 is rotated and accommodated in the bottom of the soil collecting box 6031, and the bottom of the bulldozer blade 6022 is movably fitted with the inner wall of the bottom of the soil collecting box 6031; so that the soil falling into the soil collecting box can be pushed into the soil chute by the rotating bulldozer blade and discharged; the water delivery channel 6027 is arranged along the axis of the soil unloading shaft 6024, and the upper end of the water delivery channel 6027 is blocked, and the lower end is sealed and rotatably connected with the water outlet pipe 401 of the high-pressure water pump 4, and a plurality of high-pressure nozzles 6028 are arranged on the soil unloading shaft 6024 and connected with the water delivery channel 6027, so that the water in the water storage tank 3 can be pumped to the high-pressure nozzle 6028 through the water delivery channel 6027 by the high-pressure water pump 4, and then sprayed out at high pressure through the high-pressure nozzle 6028;

[0047] The soil collecting assembly 603 includes a soil collecting box 6031 fixedly arranged on the chassis 301 and located below the spiral blade 305, and a soil sliding guide 6032; the soil sliding guide 6032 is obliquely arranged at the bottom of the soil collecting box 6031, and the soil sliding port 6033 at the higher end thereof is connected to one side of the bottom of the soil collecting box 6031, and the lower end thereof is connected to one side of the carriage 2;

[0048] Based on the above structure, the working principle or steps of the soil unloading and transporting vehicle of the utility model for unloading and transporting the drill bit are as follows:

[0049] S1. Lift the drill into place: Please refer to Figure 8 , drive the soil unloading transport vehicle of the utility model to the vicinity of the construction position of the rotary drilling machine 9, and after the drill bit of the rotary drilling machine drills to a predetermined depth, lift the drill bucket, and then lower the drill bit 7 to just above the drill bit soil unloading assembly 6, and place the bottom of the drill bucket against the top of the soil unloading shaft 6024;

[0050] S2, blades are rotating into the bucket: please refer to Figure 9, first remove the inner wall scraper 6026, then start the motor 6023 to drive the soil discharge rotating shaft 6024 to rotate forward, that is, make the spiral blade 6025 rotate upward. At this time, the spiral blade 6025 and the earth-pushing blade 6022 rotate synchronously, and at the same time, slowly lift the screw soil discharger 602 and the soil collection assembly 603 through the hydraulic lifting assembly 604. The rotating spiral blade 6025 will screw into the soil mass 8 in the drill bucket 7 until the spiral blade 6025 deeply screws into the inside of the drill bucket. In actual construction, the lifting height of the screw soil discharger 602 can be controlled by measuring the depth inside the drill bucket 7 so that the top of the soil discharge rotating shaft 6024 is close to the top of the drill bucket 7. Then, turn off the hydraulic lifting assembly 604 and the motor 6023, thus completing the operation of the blade entering the bucket; during the process of the blade entering the bucket, if a small amount of soil drops in the drill bucket, the soil will directly fall into the soil collection box 6031, and will be continuously pushed to the soil discharge port 6033 by the rotating earth-pushing blade 6022, and finally fall into the soil discharge guide groove 6032, and then be transported to the carriage 2;

[0051] S3. Blade reverse rotation for soil discharge: Please refer to Figure 10 , control the lifting height of the screw soil discharger 602 and the soil collection assembly 603 to remain unchanged through the hydraulic lifting assembly 604. Start the motor 6023 to drive the soil discharge rotating shaft 6024 to rotate slowly in the reverse direction, so that the spiral blade 6025 rotates downward. The spiral blade 6025 will push the soil mass 8 in the drill bucket 7 outwards and fall into the soil collection box 6031. Since the earth-pushing blade 6022 rotates synchronously in the soil collection box 6031 at this time, the continuously falling soil will be pushed by the earth-pushing blade 6022 into the soil discharge guide groove 6032, and then be transported to the carriage 2; when no more muck drops out of the drill bucket 7, the power of the motor 6023 can be reduced to keep the spiral blade 6025 rotating slowly. At the same time, control the screw soil discharger 602 and the soil collection assembly 603 to descend to the initial position through the hydraulic lifting assembly 604. During the descent of the screw soil discharger 602, some residual soil mass 8 in the drill bucket 7 can be entrained and fall into the soil collection box 6031, and be transported to the carriage 2 through the cooperation of the earth-pushing blade 6022 and the soil discharge guide groove 6032; after all the muck in the soil collection box 6031 is discharged into the carriage, the motor 6023 can be turned off, and thus the step of blade reverse rotation for soil discharge is completed; generally, during the continuous operation of the rotary drilling rig, the soil discharge operation for the construction of bored cast-in-place piles at different positions can be completed by cycling steps S1 - S3. When the carriage 2 is filled with muck, the discharged muck can be directly transported to the nearby muck pit; when the rotary drilling rig is used for excavation construction in the clay stratum, due to the large water content and high viscosity of the soil in the clay stratum, the soil is very easy to adhere to the inner wall of the drill bit 7. At this time, it is difficult to discharge the soil mass in the drill bucket 7 only by the spiral blade 6025, so further subsequent operations are required;

[0052] S4. Wall scraping for soil discharge; Please refer to Figure 11, after the blade reverse rotation soil unloading in step S3 is completed, inner wall scrapers 6026 are installed on both sides of the spiral blade 6025. Then, the spiral soil unloader 602 and the soil collection assembly 603 are slowly lifted by the hydraulic lifting assembly 604 until the inner wall scraper 6026 deeply enters and rotates into the inside of the drill bucket. After that, the motor 6023 is started to drive the spiral blade 6025 to rotate, thereby driving the inner wall scraper 6026 to rotate around the soil unloading rotating shaft 6024. During the rotation of the inner wall scraper 6026, the rotary excavator operator controls the drill bit to move appropriately forward, backward, left, and right, with the principle that the inner wall scraper 6026 contacts the inner wall surface of the drill bit, so as to completely remove the soil residue on the inner wall of the drill bit; when the soil residue remaining on the inner wall of the drill bit is cleaned up, the spiral soil unloader 602 and the soil collection assembly 603 are controlled by the hydraulic lifting assembly 604 to descend to the initial position. After all the soil in the soil collection box 6031 is discharged into the carriage, the motor 6023 can be turned off. Thus, the wall scraping soil unloading step is completed;

[0053] In addition, please refer to Figure 12 , when the rotary excavator works for a long time or needs to be shut down for maintenance, generally, the inner wall cleaning operation of the drill bucket can be carried out during the blade reverse rotation soil unloading in step S3 or the wall scraping soil unloading in step S4. For example, when performing the blade reverse rotation soil unloading, under the condition that the spiral blade 6025 rotates downward and advances, the height positions of the spiral soil unloader 602 and the soil collection assembly 603 remain unchanged, and when there is no soil falling in the drill bit, clear water 10 is sprayed into the drill bit through the cooperation of the high-pressure water pump 4, the water delivery channel 6027, and the high-pressure nozzle 6028 to wash the remaining soil in the drill bit. When the water spraying of the high-pressure nozzle 6028 is not smooth, the spiral soil unloader 602 and the soil collection assembly 603 can be controlled by the hydraulic lifting assembly 604 to descend to the initial position, and the motor 6023 is turned off. Then, the outlet of the high-pressure nozzle 6028 is cleaned, and then the spiral soil unloader 602 and the soil collection assembly 603 are lifted, and the motor 6023 and the high-pressure water pump 4 are started to carry out the inner wall cleaning operation of the drill bucket; during the inner wall cleaning operation of the drill bucket, the sprayed clear water will fall along the inner wall of the drill bucket into the soil collection box 6031 and be collected, without polluting the on-site construction environment.

[0054] In order to make the spiral soil unloader 602 more easily rotate and penetrate deeply into the drill bucket 7, further, in a preferred embodiment, please refer to Figure 4 , the spiral soil unloader 602 further includes a conical soil guiding head 6029 arranged at the top of the soil unloading rotating shaft 6024.

[0055] In order to enable the hydraulic lifting assembly 604 to control the synchronous and stable lifting of the spiral soil unloader 602 and the soil collection assembly 603, further, in a preferred embodiment, please refer to Figure 4 , the hydraulic lifting assembly 604 includes a hydraulic lifting cylinder 6041 fixedly installed on the base 601, and sliding telescopic sleeve rods 6042 arranged at the corner ends of the base 601.

[0056] For the convenience of disassembly and installation of the inner wall scraper 6026, further, in a preferred embodiment, please refer to Figure 6 and Figure 7 , a clamping groove 60251 and a scraper installation screw hole 60252 are arranged on the outer helix of the spiral blade 6025. A plurality of pairs of ear plates 60261 are arranged on one side of the inner wall scraper 6026, and ear holes matching the scraper installation screw holes 60252 are arranged on the ear plates 60261. Based on this structural arrangement, one side of the inner wall scraper 6026 can be directly clamped into the clamping groove 60251, and the ear plates 60261, the scraper installation screw holes 60252 and bolts are used for detachable fixed connection.

[0057] When the inner wall scraper 6026 contacts the inner wall of the drill bucket to clean the soil adhered in the drill bucket, the inner wall scraper 6026 will be worn during long-term use, or mechanical damage will be caused to the inner wall of the drill bucket. Further, in a preferred embodiment, please refer to Figure 7 , the inner wall scraper 6026 includes a fixed-end scraper 60261 and a working-end scraper 60262. One side of the fixed-end scraper 60261 is detachably clamped with the clamping groove 60251, and the other side is detachably connected with the working-end scraper 60262. The working-end scraper 60262 is made of rubber, and the fixed-end scraper 60261 is made of steel plate. Based on this structural arrangement, since the inner wall scraper 6026 realizes its function by contacting the inner wall of the drill bucket with the working-end scraper 60262 during use, the working-end scraper 60262 made of rubber can not only improve the cleaning effect of the soil, but also reduce the mechanical damage to the inner wall of the drill bucket. In addition, since the working-end scraper 60262 is detachably connected with the fixed-end scraper 60261, the working-end scraper 60262 can be replaced after it is worn and affects normal use.

[0058] Further, in a preferred embodiment, please refer to Figure 4 and Figure 12 , a part of the high-pressure nozzles 6028 are arranged on the soil unloading rotating shaft 6024 at the position of the spiral blade 6025, and the other part of the high-pressure nozzles 6028 are distributed on the soil unloading rotating shaft 6024 at the position of the soil collecting box 6031. A valve 60271 is arranged on the water delivery channel 6027 at the connection between the soil collecting box 6031 and the spiral blade 6025. Based on this structural arrangement, the clear water can be sprayed at different positions by controlling the valve 60271. When the valve 60271 is opened, the clear water can be sprayed out from all the high-pressure nozzles 6028 on the soil unloading rotating shaft 6024 to complete the cleaning operation of the inner wall of the drill bucket. When the valve 60271 is closed, the clear water can only be sprayed out within the range of the soil collecting box 6031 to realize the cleaning of the soil collecting box.

[0059] In order to prevent the spiral blade 6025 from blocking the high-pressure water from spraying toward the inner wall of the drill bit, further, in a preferred embodiment, refer to Figure 4 The high-pressure nozzle 6028 located at the position of the spiral blade 6025 is arranged in the middle of two adjacent spiral teeth on the soil unloading shaft 6024.

[0060] In order to facilitate the collection of the soil discharged from the drill bucket, further, in a preferred embodiment, refer to Figure 4 The top of the soil collecting box 6031 is in an inverted cone shape, and the inner wall of the soil collecting box 6031 is a smooth surface; and the diameter of the top of the soil collecting box 6031 should be slightly larger than the diameter of the drill bucket.

[0061] In order to facilitate the heat dissipation of the motor, as well as the inspection and maintenance of the equipment, further, in a preferred embodiment, please refer to Figure 1 The motor 6023 is a bidirectional motor, and an inspection port is provided on one side of the chassis 6021, on which a detachable grille plate 60211 is installed.

[0062] Further, in a preferred embodiment, see Figure 1 and Figure 2 The drill bit soil unloading assembly 6 is arranged at the outermost side of the rear part of the vehicle body 1 away from the front part; the vehicle compartment 2 is a dump type vehicle compartment; based on this structural arrangement, since the soil unloading assembly 6 is arranged at the outermost side of the rear part of the vehicle body 1 away from the front part, it is convenient for the vehicle body 1 to be docked and the drill bit soil unloading assembly 6 is controlled to connect with the drill bucket to facilitate the unloading operation of the drill bucket, and after the unloaded soil is collected in the vehicle compartment 2, the vehicle body 1 can be directly controlled to travel to the soil unloading position, and the transferred soil can be dumped out through the dump type vehicle compartment, so that the rotary drilling rig soil unloading transport vehicle of the utility model can be efficiently operated and used.

[0063] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary drilling rig bit unloading soil transport vehicle for bored pile construction, comprising a vehicle body and a carriage arranged on one side of the rear of the vehicle body, characterized in that: Also includes: The water storage tank, high-pressure water pump, hydraulic power system and drill bit soil unloading assembly are arranged on the other side of the rear of the vehicle body; The drill bit soil unloading assembly includes a base fixed to the rear of the vehicle body, a screw soil unloading device, a soil collecting assembly, and a hydraulic jacking assembly arranged on the base to control the synchronous lifting of the screw soil unloading device and the soil collecting assembly; The hydraulic power system is connected to the hydraulic jacking assembly to provide hydraulic power to the hydraulic jacking assembly; the water inlet pipe of the high-pressure water pump is connected to the water storage tank; The screw unloader includes a chassis fixedly connected to the jacking end of the jacking assembly, a motor installed in the chassis, a vertically arranged unloading shaft, spiral blades and bulldozer blades arranged on the unloading shaft from top to bottom, an inner wall scraper detachably arranged on the outer side of the spiral blade along the vertical direction, a water delivery channel, and a plurality of high-pressure nozzles; the unloading shaft rotates from top to bottom in sequence to penetrate the soil collecting box and the chassis, and its bottom is connected to the output end of the motor; the water delivery channel is arranged along the axis of the unloading shaft, and the upper end of the water delivery channel is blocked, and the lower end is sealed and rotatably connected to the outlet pipe of the high-pressure water pump; a plurality of high-pressure nozzles are arranged on the unloading shaft and communicated with the water delivery channel; the bulldozer blade is rotatably accommodated in the bottom of the soil collecting box, and the bottom of the bulldozer blade is movably fitted with the inner wall of the bottom of the soil collecting box; The soil collecting component comprises a soil collecting box fixedly arranged on the chassis and located below the spiral blade, and a soil guide groove; the soil guide groove is obliquely arranged at the bottom of the soil collecting box, and its higher end soil outlet is connected to one side of the bottom of the soil collecting box, and the lower end is connected to one side of the carriage.

2. A rotary drilling rig bit unloading soil transport vehicle for bored pile construction as claimed in claim 1, characterized in that: The spiral soil unloader also includes a conical soil guide head arranged on the top of the soil unloading shaft.

3. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 1, characterized in that: The hydraulic lifting assembly comprises a hydraulic lifting cylinder fixedly mounted on a base, and a sliding telescopic sleeve rod arranged at an angle end of the base.

4. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 1, characterized in that: The spiral outer side of the spiral blade is provided with a clamping groove and a scraper installation screw hole, and one side of the inner wall scraper is provided with a plurality of ear plates, and the ear plates are provided with ear holes matching with the scraper installation screw holes.

5. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 4, characterized in that: The inner wall scraper includes a fixed end scraper and a working end scraper; one side of the fixed end scraper is detachably engaged with the card slot, and the other side is detachably connected with the working end scraper, and the working end scraper is made of rubber.

6. A rotary drilling rig bit unloading soil transport vehicle for bored pile construction as claimed in claim 1, characterized in that: A portion of the high-pressure nozzles are arranged on the soil unloading shaft where the spiral blades are located, and another portion of the high-pressure nozzles are distributed on the soil unloading shaft where the soil collecting box is located, and a valve is provided on the water delivery channel where the soil collecting box and the spiral blades meet.

7. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 6, characterized in that: The high-pressure nozzle located at the position where the spiral blade is located is arranged in the middle of two adjacent spiral teeth on the soil unloading shaft.

8. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 1, characterized in that: The top of the soil collecting box is in an inverted cone shape, and the inner wall of the soil collecting box is a smooth surface.

9. A rotary drilling rig bit unloading soil transport vehicle for bored pile construction as claimed in claim 1, characterized in that: The motor is a bidirectional motor, one side of the chassis is provided with an inspection port, and a detachable grille plate is installed on the inspection port.

10. A rotary drilling rig soil unloading and transporting vehicle for bored pile construction as claimed in claim 1, characterized in that: The drill bit soil unloading assembly is arranged at the outermost side of the rear of the vehicle body away from the front of the vehicle; and the vehicle compartment is a dump-type vehicle compartment.

Images