A drilling and pouring device for subway station construction

Abstract

The present invention belongs to the technical field of subway construction, and specifically refers to a drilling and grouting device for subway station construction, including a mobile body, a hydraulic control arm, a drill lifting rail and an integrated drilling assembly. Steel bar fixings are respectively arranged at the upper and lower ends of the side wall of the main drill rod, and the first micromotor can drive the double-threaded rod to rotate, so that the paired adjustment blocks move toward or away from each other, and then adjust the distance between the blocking rods, so that the stirrups at the upper and lower ends of the steel cage can be placed on the adjustment push rod, and the blocking rod is in contact with the side wall of the stirrups of the steel cage. The steel cage is temporarily fixed by the clamping effect of the steel fixings at the upper and lower ends on the steel cage. In the process of drilling with the adjustable drill bit, the steel cage will enter the borehole simultaneously with the adjustable drill bit, realizing the technical effect of combining the process of drilling and placing the steel cage into one, reducing working time and improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of subway construction, and specifically refers to a drilling and grouting device for subway station construction. Background Art

[0002] In subway construction, bored cast-in-place piles are a key ground reinforcement technology. Their primary function is to reinforce subway stations, tunnels and their surrounding soil, ensure the stability of the strata during construction, and effectively prevent potential safety risks such as strata collapse. The implementation principle of this technology is to use a drilling machine to drill holes underground, then pour concrete into the holes and vibrate them to form them. After the concrete solidifies, a solid bored cast-in-place pile is formed.

[0003] In the existing subway construction drilling and pouring process, first the pile hole is drilled on the ground by drilling equipment, then the drilling equipment is moved out of the pile hole, and then the steel cage required for pile formation is hoisted into the pile hole by lifting equipment. The concrete pouring work starts only after the steel cage is placed. The drilling, placement of steel cage and concrete pouring processes in the whole process need to be carried out separately and sequentially, which invisibly increases the working time, has low efficiency, and requires additional steel cage hoisting equipment, which is costly.

[0004] Therefore, it is necessary to propose a drilling and grouting device for subway station construction to solve the technical problems existing in the drilling and grouting process of existing subway construction. Summary of the invention

[0005] The present invention overcomes the shortcomings of the prior art and provides a drilling and grouting device for subway station construction. Rebar fixings are respectively arranged at the upper and lower ends of the side walls of the main drill rod. Before drilling, the drill lifting rail and the inclination angle of the main drill rod can be controlled by a hydraulic control arm. Construction personnel can sleeve the welded steel cage from the lower end of the main drill rod to the outside of the main drill rod. The first micromotor can drive the double-threaded rod to rotate, so that the paired adjustment blocks move toward or away from each other, and then adjust the distance between the blocking rods, so that the stirrups at the upper and lower ends of the steel cage can be placed on the adjustment push rod, and the blocking rod is in contact with the side walls of the stirrups of the steel cage. The steel cage is temporarily fixed by the clamping effect of the steel fixings at the upper and lower ends on the steel cage. In the process of drilling with the adjustable drill bit, the steel cage will enter the drill hole simultaneously with the adjustable drill bit, thereby achieving the technical effect of combining the process of drilling and placing the steel cage into one, reducing working time and improving work efficiency.

[0006] The technical solution adopted by the present invention is as follows: The present invention provides a drilling and grouting device for subway station construction, including a mobile body, a hydraulic control arm is movably provided on the front side of the mobile body, a drill bit lifting rail is provided at the end of the hydraulic control arm, a lifting block is slidably provided in the drill bit lifting rail, a connecting rod is fixedly provided on the side wall of the lifting block, an integrated drilling assembly is provided at the end of the connecting rod, the integrated drilling assembly includes a support block, a main drill rod, a steel bar fixing part and an adjustable drill bit, the support block is fixedly provided on the connecting rod, the main drill rod is fixedly provided at the center of the lower wall of the support block, the steel bar fixing parts are provided in pairs at the upper and lower end side walls of the main drill rod, the adjustable drill bit is movably provided at the lower end of the main drill rod, a steel bar cage is coaxially provided around the outer side of the main drill rod, and the upper and lower ends of the steel bar cage are respectively clamped and fixed on the steel bar fixing parts.

[0007] Furthermore, the steel bar fixing piece at the lower end is arranged to be rotated 90 degrees relative to the steel bar fixing piece at the upper end, and the steel bar fixing piece includes an adjusting screw, a sliding sleeve, a screw sleeve, an adjusting rail, an adjusting block and an adjusting push rod. The adjusting screws are rotatably arranged on the upper and lower side walls of the main drill rod in pairs, and the sliding sleeve is slidably sleeved on the upper and lower ends of the main drill rod in pairs, the screw sleeve is fixedly arranged on the side walls of the sliding sleeve, the screw sleeve is sleeved on the adjusting screw, the adjusting screw is threadedly connected to the screw sleeve, the adjusting rail is fixedly arranged on the side wall of the sliding sleeve away from the screw sleeve, and a double-threaded rod is rotatably provided on the upper wall of the adjusting rail, and the side walls at both ends of the double-threaded rod have opposite thread rotation directions, the adjusting blocks are symmetrically sleeved on the side walls at both ends of the double-threaded rod with opposite thread rotation directions, the adjusting push rods are respectively arranged on the upper ends of the adjusting blocks, and the connecting line between the adjusting push rods passes through the central axis of the sliding sleeve.

[0008] Furthermore, a first micromotor is fixedly provided at the end of the adjustment rail, the output end of the first micromotor is connected to the end of the double-threaded rod, the output end of the adjustment push rod is respectively provided with a second micromotor, the output end of the adjustment push rod is respectively rotatably provided with a blocking rod, and the second micromotor is respectively connected to the end of the blocking rod.

[0009] Furthermore, the stirrups of the steel cage are respectively laid on the upper wall of the output end of the adjusting push rod, and the blocking rods are respectively pressed against the side walls at both ends of the stirrups of the steel cage.

[0010] Furthermore, a sleeve adjusting motor is respectively provided at the lower end of the adjusting screw rod, and the output end of the sleeve adjusting motor is respectively connected to the end of the adjusting screw rod, and a pipe fixing sleeve is symmetrically fixed on the side wall of the sliding sleeve.

[0011] Furthermore, a main rotating motor is fixedly provided at the center of the upper wall of the support block, the output end of the main rotating motor is connected to the end of the main drill rod, a connecting tube is coaxially fixedly provided at the lower end of the main drill rod, a through-slit is opened in a circular array on the side wall of the connecting tube, a connecting screw is coaxially rotatably provided inside the connecting tube, the upper end of the connecting screw is coaxially rotatably provided at the lower end of the main drill rod, a bottom drill tip is coaxially fixedly provided at the lower end of the connecting tube, and the lower end of the connecting screw is coaxially rotatably provided at the upper end of the bottom drill tip.

[0012] Furthermore, the adjustable drill bit includes a sliding block, a first rotating arm, a second rotating arm and drilling teeth, the sliding block is sleeved on the connecting screw, the sliding block is threadedly connected to the connecting screw, the first rotating arm is rotatably arranged in a ring array on the side wall of the sliding block, the first rotating arms are respectively arranged through the through-slits, the second rotating arms are rotatably arranged at the end of the first rotating arm, the lower ends of the second rotating arms are respectively rotatably connected to the side walls of the bottom drill tip, the first rotating arm and the sliding block, the second rotating arm and the first rotating arm, and the second rotating arm and the bottom drill tip are respectively connected by pins, and the drilling teeth are respectively fixed on the side walls of the second rotating arm away from the bottom drill tip.

[0013] Furthermore, a concrete delivery pipe is provided on the outside of the main drill rod, and the concrete delivery pipe is clamped and fixed in the pipe fixing sleeve, the lower end of the concrete delivery pipe is respectively arranged between adjacent second rotating arms, and a pipe interface is provided at the upper end opening of the concrete delivery pipe.

[0014] Furthermore, a main lifting screw is rotatably provided inside the drill lifting rail, the lifting block is sleeved on the main lifting screw, the lifting block is threadedly connected to the main lifting screw, a lifting motor is fixedly provided at the lower end of the drill lifting rail, the output end of the lifting motor is connected to the end of the main lifting screw, a control motor is fixedly provided inside the lower end of the main drill rod, and the output end of the control motor is connected to the end of the connecting screw.

[0015] Furthermore, a cockpit is provided at the front end of the mobile body, and a circuit control system is provided in the cockpit. The hydraulic control arm, lifting motor, main rotating motor, control motor, sleeve adjustment motor, first micromotor, adjustment push rod and second micromotor are electrically connected to the circuit control system respectively.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] (1) During the drilling operation, the main rotating motor starts and drives the main drill rod to rotate, so that the adjustable drill bit at the lower end of the main drill rod rotates. At this time, the lifting motor starts and drives the main lifting screw to rotate. The lifting block slides downward as the main lifting screw rotates, so that the adjustable drill bit contacts the ground and performs the drilling operation until the adjustable drill bit drills into the specified depth to complete the drilling process;

[0018] (2) Steel bar fixings are respectively arranged at the upper and lower ends of the side wall of the main drill rod. Before drilling, the hydraulic control arm can be used to control the inclination angle of the drill bit lifting rail and the main drill rod. The construction personnel can sleeve the welded steel cage from the lower end of the main drill rod to the outside of the main drill rod. The first micromotor can drive the double threaded rod to rotate, so that the paired adjustment blocks move toward or away from each other, and then adjust the distance between the stop rods, so that the stirrups at the upper and lower ends of the steel cage can be placed on the adjustment push rod, and the stop rod is in contact with the stirrup side wall of the steel cage. The steel cage is temporarily fixed by the clamping effect of the steel bar fixings at the upper and lower ends. During the drilling process of the adjustable drill bit, the steel cage will enter the drill hole simultaneously with the adjustable drill bit, realizing the technical effect of combining the drilling process with the placement of the steel cage, reducing the working time and improving the working efficiency.

[0019] (3) The adjustable drill bit can change the diameter of the drill hole according to actual needs. The control motor can drive the connecting screw to rotate, and the sliding block will move up and down with the rotation of the connecting screw, thereby increasing or decreasing the opening angle between the first rotating arm and the second rotating arm, thereby changing the drilling range of the drilling teeth, thereby achieving the technical effect of changing the diameter of the drill hole;

[0020] (4) After placing the steel cage at the corresponding position of the drill hole, the construction personnel can connect the external concrete conveying device at the pipe interface set at the upper end of the concrete conveying pipe, input the external concrete into the concrete conveying pipe through the pipe interface, and inject it into the bottom of the drill hole from the lower end of the concrete conveying pipe. At the same time, the control motor is started again to move the sliding block to the uppermost end of the connecting screw. At this time, the rotation range of the first rotating arm and the second rotating arm is smaller than the inner diameter of the steel cage. At this time, the lifting motor is started and drives the main lifting screw to rotate, so that the lifting block rises, and the integrated drilling assembly rises synchronously. The adjustable drill bit gradually rises from the inside of the steel cage. The concrete conveying pipe rises while pouring concrete until the adjustable drill bit moves out of the drill hole, completing the concrete pouring work inside the drill hole, achieving the technical effect of the process of moving the adjustable drill bit out of the drill hole and the process of pouring concrete simultaneously, further reducing the construction time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a drilling and grouting device for subway station construction provided by the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure of the drill lifting rail, the main lifting screw, the lifting block, the connecting rod and the integrated drilling assembly;

[0023] Figure 3 It is a schematic diagram of the structure of an adjustable drill bit;

[0024] Figure 4 It is a cross-sectional structural diagram of a drill lifting rail, a main lifting screw rod, a lifting block, a connecting rod, an integrated drilling assembly and a steel cage;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0026] Figure 6 It is a schematic diagram of the connection structure of the steel bar fixing part, the main drill rod and the concrete delivery pipe;

[0027] Figure 7 It is a schematic diagram of the explosion structure of the steel bar fixing parts and the main drill pipe;

[0028] Figure 8 It is a schematic diagram of the connection structure between the steel bar fixing part and the steel bar cage;

[0029] Fig. 9 A side view of a drilling and grouting device for subway station construction provided by the present invention during drilling operation;

[0030] Fig.10 A side view of a drilling and grouting device for subway station construction provided by the present invention when the grouting work is completed.

[0031] Among them, 1. Mobile body, 11. Cockpit, 2. Hydraulic control arm, 3. Drill lifting rail, 31. Main lifting screw, 32. Lifting motor, 33. Lifting block, 34. Connecting rod, 4. Integrated drilling assembly, 41. Support block, 411. Main rotating motor, 42. Main drill rod, 421. Connecting tube, 4211. Through seam, 422. Connecting screw, 4221. Control motor, 423. Bottom drill tip, 43. Rebar fixing, 431. Adjusting screw, 4311. Sleeve Adjusting motor, 432, sliding sleeve, 4321, pipe fixing sleeve, 433, screw sleeve, 434, adjusting rail, 4341, double threaded rod, 4342, first micromotor, 435, adjusting block, 436, adjusting push rod, 4361, stop rod, 4362, second micromotor, 44, adjustable drill bit, 441, sliding block, 442, first rotating arm, 443, second rotating arm, 444, drilling teeth, 5, steel cage, 6, concrete delivery pipe, 61, pipeline interface. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 In this embodiment, a drilling and grouting device for subway station construction includes a mobile body 1, a hydraulic control arm 2, a drill lifting rail 3 and an integrated drilling assembly 4. The hydraulic control arm 2 is movably arranged on the front side of the mobile body 1, the drill lifting rail 3 is arranged at the end of the hydraulic control arm 2, a lifting block 33 is slidably arranged in the drill lifting rail 3, a connecting rod 34 is fixedly arranged on the side wall of the lifting block 33, the integrated drilling assembly 4 is arranged at the end of the connecting rod 34, and a driving cabin 11 is arranged at the front end of the mobile body 1.

[0035] A main lifting screw 31 is rotatably provided in the drill lifting rail 3, and a lifting block 33 is sleeved on the main lifting screw 31. The lifting block 33 is threadedly connected to the main lifting screw 31. A lifting motor 32 is fixedly provided at the lower end of the drill lifting rail 3, and the output end of the lifting motor 32 is connected to the end of the main lifting screw 31.

[0036] The integrated drilling assembly 4 includes a support block 41, a main drill rod 42, a steel bar fixing piece 43 and an adjustable drill bit 44. The support block 41 is fixedly arranged on the connecting rod 34, the main drill rod 42 is fixedly arranged at the center of the lower wall of the support block 41, the steel bar fixing piece 43 is arranged in pairs on the upper and lower side walls of the main drill rod 42, and the adjustable drill bit 44 is movably arranged at the lower end of the main drill rod 42. A steel bar cage 5 is coaxially arranged around the outer side of the main drill rod 42, and the upper and lower ends of the steel bar cage 5 are respectively fixedly engaged on the steel bar fixing piece 43; a control motor 4221 is fixedly arranged inside the lower end of the main drill rod 42;

[0037] A main rotating motor 411 is fixedly provided at the center of the upper wall of the support block 41, and the output end of the main rotating motor 411 is connected to the end of the main drill rod 42, and a connecting tube 421 is coaxially fixed to the lower end of the main drill rod 42. A through slit 4211 is opened in a circular array on the side wall of the connecting tube 421, and a connecting screw rod 422 is coaxially rotatable inside the connecting tube 421. The upper end of the connecting screw rod 422 is coaxially rotatable at the lower end of the main drill rod 42, and a bottom drill tip 423 is coaxially fixed to the lower end of the connecting tube 421. The lower end of the connecting screw rod 422 is coaxially rotatable at the upper end of the bottom drill tip 423, and the output end of the control motor 4221 is connected to the end of the connecting screw rod 422.

[0038] The lower end steel bar fixing part 43 is rotated 90 degrees relative to the upper end steel bar fixing part 43. The steel bar fixing part 43 includes an adjusting screw rod 431, a sliding sleeve 432, a screw rod sleeve 433, an adjusting rail 434, an adjusting block 435 and an adjusting push rod 436. The adjusting screw rods 431 are rotatably arranged in pairs on the upper and lower side walls of the main drill rod 42. The sliding sleeves 432 are slidably sleeved in pairs on the upper and lower ends of the main drill rod 42. The screw rod sleeve 433 is fixedly arranged on the side wall of the sliding sleeve 432. The screw rod sleeve 433 is sleeved on the adjusting screw rod 43 1, the adjusting screw rod 431 is threadedly connected with the screw rod sleeve 433, the adjusting rail 434 is fixedly arranged on the side wall of the sliding sleeve 432 away from the screw rod sleeve 433, the upper wall of the adjusting rail 434 is rotatably provided with a double threaded rod 4341, the two end side walls of the double threaded rod 4341 have opposite thread rotation directions, the adjusting block 435 is symmetrically sleeved on the two end side walls of the double threaded rod 4341 with opposite thread rotation directions, the adjusting push rods 436 are respectively arranged on the upper ends of the adjusting blocks 435, and the connecting line between the adjusting push rods 436 passes through the central axis of the sliding sleeve 432;

[0039] The lower end of the adjusting screw rod 431 is respectively provided with a sleeve adjusting motor 4311, and the output end of the sleeve adjusting motor 4311 is respectively connected to the end of the adjusting screw rod 431, and the side wall of the sliding sleeve 432 is symmetrically fixed with a pipe fixing sleeve 4321;

[0040] A concrete delivery pipe 6 is disposed on the outer side of the main drill rod 42 . The concrete delivery pipe 6 is fixedly engaged in the pipe fixing sleeve 4321 . A pipe interface 61 is disposed at the upper opening of the concrete delivery pipe 6 .

[0041] A first micromotor 4342 is fixedly provided at the end of the adjusting rail 434, and the output end of the first micromotor 4342 is connected to the end of the double-threaded rod 4341, and a second micromotor 4362 is provided at the output end of the adjusting push rod 436, and a blocking rod 4361 is rotatably provided at the output end of the adjusting push rod 436, and the second micromotor 4362 is connected to the end of the blocking rod 4361; the stirrups of the steel cage 5 are respectively constructed on the upper wall of the output end of the adjusting push rod 436, and the blocking rods 4361 are respectively pressed against the side walls at both ends of the stirrups of the steel cage 5.

[0042] The adjustable drill bit 44 includes a sliding block 441, a first rotating arm 442, a second rotating arm 443 and a drilling tooth 444. The sliding block 441 is sleeved on the connecting screw rod 422, and the sliding block 441 is threadedly connected to the connecting screw rod 422. The first rotating arm 442 is rotatably arranged on the side wall of the sliding block 441 in an annular array. The first rotating arms 442 are respectively arranged to pass through the through slits 4211. The second rotating arms 443 are rotatably arranged on the ends of the first rotating arms 442. The lower ends of the second rotating arms 443 are respectively rotatably connected to the side walls of the bottom drill tip 423. The first rotating arm 442 and the sliding block 441, the second rotating arm 443 and the first rotating arm 442, and the second rotating arm 443 and the bottom drill tip 423 are respectively connected by pin shafts. The drilling teeth 444 are respectively fixedly arranged on the side walls of the second rotating arms 443 away from the bottom drill tip 423, and the lower ends of the concrete conveying pipes 6 are respectively arranged between adjacent second rotating arms 443.

[0043] A circuit control system is provided in the cockpit 11, and the hydraulic control arm 2, the lifting motor 32, the main rotating motor 411, the control motor 4221, the sleeve adjustment motor 4311, the first micromotor 4342, the adjustment push rod 436 and the second micromotor 4362 are electrically connected to the circuit control system respectively.

[0044] The specific implementation of this embodiment is as follows:

[0045] The construction personnel sit in the cockpit 11 to control the mobile body 1, so that the device is moved as a whole to the work site, and the integrated drilling assembly 4 is located directly above the position where drilling and pouring are required. A circuit control system is provided in the cockpit 11, and the construction personnel can automatically control the various mechanical parts of the device through the circuit control system. The circuit control system belongs to the existing technology, and its structure and principle are not described in detail here.

[0046] Before drilling, the construction personnel first bury casings at the locations where drilling and grouting are required (this belongs to the prior art and will not be described in detail) to locate the pile positions to be drilled. The construction personnel control the main rotating motor 411 to start through the circuit control system. The main rotating motor 411 can drive the main drill rod 42 to rotate, so that the adjustable drill bit 44 at the lower end of the main drill rod 42 rotates. At this time, the construction personnel control the lifting motor 32 to start through the circuit control system, driving the main lifting screw rod 31 to rotate. The lifting block 33 slides downward as the main lifting screw rod 31 rotates, so that the adjustable drill bit 44 contacts the ground and is moved downward. The drilling operation is carried out until the adjustable drill bit 44 drills into the specified depth to complete the drilling process. During the drilling process of the adjustable drill bit 44, the construction personnel can inject mud into the borehole through a pipeline, and circulate the mud in the borehole with the external mud pool. The pressure difference between the mud and the groundwater is used to control the water pressure, so that the mud can form a mud skin on the hole wall to reinforce the hole wall and prevent collapse, while stabilizing the water level in the hole. At the same time, the mud can also carry out rock and soil debris, cool and lubricate the drill bit. This is an existing technology commonly used in the drilling and injection process, which will not be elaborated here.

[0047] The adjustable drill bit 44 can change the diameter of the drill hole according to actual needs. The control motor 4221 can drive the connecting screw 422 to rotate. The sliding block 441 will move up and down with the rotation of the connecting screw 422, thereby increasing or decreasing the opening angle between the first rotating arm 442 and the second rotating arm 443, thereby changing the drilling range of the drilling tooth 444 and achieving the technical effect of changing the size of the drill hole diameter.

[0048] Steel bar fixings 43 are respectively arranged at the upper and lower ends of the side wall of the main drill rod 42. Before drilling operation, the hydraulic control arm 2 can be used to control the inclination angle of the drill lifting rail 3 and the main drill rod 42. The construction personnel can sleeve the welded steel cage 5 from the lower end of the main drill rod 42 to the outside of the main drill rod 42. The first micromotor 4342 can drive the double threaded rod 4341 to rotate, so that the paired adjustment blocks 435 move toward or away from each other, and then adjust the distance between the blocking rods 4361, so that the stirrups at the upper and lower ends of the steel cage 5 can be placed on the adjustment push rod 436, and the blocking rod 4361 is in contact with the side wall of the stirrups of the steel cage 5. The lower end steel bar fixing 43 is rotated 90 degrees relative to the upper end steel bar fixing 43. Therefore, the blocking rods 4361 at the upper and lower ends can limit the front and rear and left and right directions of the stirrups of the steel cage 5 respectively, so that the steel cage 5 is coaxially fixed to the outside of the main drill rod 42. Figure 8 As shown, during the drilling process of the adjustable drill bit 44, the steel cage 5 will enter the drill hole together with the adjustable drill bit 44, achieving the technical effect of combining the drilling process with the placement of the steel cage 5, reducing working time and improving work efficiency. By adjusting the distance between the push rod 436 and the blocking rod 4361, it can adapt to the fixing requirements of steel cages 5 of different diameters.

[0049] After the drilling is completed, the construction personnel perform the primary and secondary cleaning processes inside the borehole through the external pipeline to clean the mud and debris in the borehole. After the cleaning is completed, the steel cage 5 has been placed at the corresponding position of the borehole. The construction personnel fix the steel cage 5 to the casing by welding or fixing with fixing parts to achieve the positioning of the steel cage 5. At this time, the construction personnel can connect the external concrete conveying device at the pipeline interface 61 set at the upper end of the concrete conveying pipe 6, input the external concrete into the concrete conveying pipe 6 through the pipeline interface 61, and inject it into the bottom of the borehole from the lower end of the concrete conveying pipe 6. At the same time, the control motor 4221 is started again to move the sliding block 441 to the uppermost end of the connecting screw rod 422. At this time, the rotation range of the first rotating arm 442 and the second rotating arm 443 is smaller than the inner diameter of the steel cage 5. At the same time, the second micromotor 4362 starts and drives the blocking rod 4361 to rotate from the top to the bottom. At this time, the blocking rod 4361 loses its limiting effect on the stirrups of the steel cage 5. At the same time, the adjusting push rod 436 drives the blocking rod 4361 to approach each other, so that the adjusting push rod 436 loses its limiting effect on the steel cage 5, and the steel cage 5 is separated from the limitation of the steel fixing piece 43. At this time, the lifting motor 32 starts and drives the main lifting screw 31 to rotate, so that the lifting block 33 rises, and the integrated drilling assembly 4 rises synchronously, and the adjustable drill bit 44 enters the interior of the steel cage 5 and gradually rises. The concrete delivery pipe 6 rises while pouring concrete until the adjustable drill bit 44 moves out of the borehole, completing the concrete pouring work inside the borehole, achieving the effect of the process of moving the adjustable drill bit 44 out of the borehole and the process of pouring concrete being carried out simultaneously, further reducing the construction time and improving work efficiency.

[0050] The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0051] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0052] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A drilling and grouting device for subway station construction, comprising a mobile vehicle (1), characterized in that: A hydraulic control arm (2) is movably provided at the front side of the mobile vehicle body (1); a drill lifting rail (3) is provided at the end of the hydraulic control arm (2); a lifting block (33) is slidably provided inside the drill lifting rail (3); a connecting rod (34) is fixedly provided on the side wall of the lifting block (33); an integrated drilling assembly (4) is provided at the end of the connecting rod (34); the integrated drilling assembly (4) comprises a support block (41), a main drilling rod (42), a steel bar fixing member (43) and an adjustable drill bit ( 44), the support block (41) is fixedly arranged on the connecting rod (34), the main drill rod (42) is fixedly arranged at the center of the lower wall of the support block (41), the steel bar fixing pieces (43) are arranged in pairs on the upper and lower side walls of the main drill rod (42), the adjustable drill bit (44) is movably arranged on the lower end of the main drill rod (42), and a steel bar cage (5) is coaxially arranged around the outer side of the main drill rod (42), and the upper and lower ends of the steel bar cage (5) are respectively fixedly engaged with the steel bar fixing pieces (43); The steel bar fixing member (43) at the lower end is arranged to rotate 90 degrees relative to the steel bar fixing member (43) at the upper end. The steel bar fixing member (43) comprises an adjusting screw rod (431), a sliding sleeve (432), a screw rod sleeve (433), an adjusting rail (434), an adjusting block (435) and an adjusting push rod (436). The adjusting screw rods (431) are rotatably arranged in pairs on the upper and lower side walls of the main drill rod (42). The sliding sleeves (432) are slidably sleeved in pairs on the upper and lower ends of the main drill rod (42). The screw rod sleeve (433) is fixedly arranged on the side wall of the sliding sleeve (432). The screw rod sleeve (433) is sleeved on the adjusting screw rod (431). The adjusting screw rod (431) ) is threadedly connected to the screw sleeve (433), the adjustment rail (434) is fixedly arranged on the side wall of the sliding sleeve (432) away from the screw sleeve (433), the upper wall of the adjustment rail (434) is rotatably provided with a double-threaded rod (4341), the threads of the two end walls of the double-threaded rod (4341) are in opposite directions, the adjustment block (435) is symmetrically sleeved on the two end walls of the double-threaded rod (4341) with opposite threads, the adjustment push rods (436) are respectively arranged on the upper ends of the adjustment blocks (435), the connecting line between the adjustment push rods (436) passes through the central axis of the sliding sleeve (432), and the output ends of the adjustment push rods (436) are respectively rotatably provided with stop rods (4361); The stirrups of the steel cage (5) are respectively laid on the upper wall of the output end of the adjusting push rod (436), and the blocking rods (4361) are respectively pressed against the side walls at both ends of the stirrups of the steel cage (5).

2. A drilling and pouring device for subway station construction according to claim 1, characterized in that: A first micromotor (4342) is fixedly provided at the end of the adjustment rail (434), and the output end of the first micromotor (4342) is connected to the end of the double-threaded rod (4341). The output ends of the adjustment push rod (436) are respectively provided with second micromotors (4362), and the second micromotors (4362) are respectively connected to the ends of the blocking rods (4361).

3. A drilling and pouring device for subway station construction according to claim 2, characterized in that: The lower ends of the adjusting screw rods (431) are respectively provided with sleeve adjusting motors (4311), and the output ends of the sleeve adjusting motors (4311) are respectively connected to the ends of the adjusting screw rods (431), and the side walls of the sliding sleeves (432) are symmetrically fixed with pipe fixing sleeves (4321).

4. A drilling and pouring device for subway station construction according to claim 3, characterized in that: A main rotating motor (411) is fixedly provided at the center of the upper wall of the support block (41); the output end of the main rotating motor (411) is connected to the end of the main drill rod (42); a connecting tube (421) is coaxially fixedly provided at the lower end of the main drill rod (42); a through slit (4211) is provided in an annular array on the side wall of the connecting tube (421); a connecting screw rod (422) is coaxially rotatably provided inside the connecting tube (421); the upper end of the connecting screw rod (422) is coaxially rotatably provided at the lower end of the main drill rod (42); a bottom drill tip (423) is coaxially fixedly provided at the lower end of the connecting tube (421); and the lower end of the connecting screw rod (422) is coaxially rotatably provided at the upper end of the bottom drill tip (423).

5. The drilling and pouring device for subway station construction according to claim 4 is characterized in that: The adjustable drill bit (44) comprises a sliding block (441), a first rotating arm (442), a second rotating arm (443) and a drilling tooth (444); the sliding block (441) is sleeved on the connecting screw (422); the sliding block (441) is threadedly connected to the connecting screw (422); the first rotating arms (442) are rotatably arranged on the side wall of the sliding block (441) in an annular array; the first rotating arms (442) are respectively arranged to penetrate the through slits (4211); the second rotating arms (443) are arranged to rotate in the through slits (4211); and the second rotating arms (444) are arranged to rotate in the through slits (4211). 3) rotatably arranged at the end of the first rotating arm (442), the lower end of the second rotating arm (443) is rotatably connected to the side wall of the bottom drill tip (423), the first rotating arm (442) and the sliding block (441), the second rotating arm (443) and the first rotating arm (442), and the second rotating arm (443) and the bottom drill tip (423) are respectively connected via a pin shaft, and the drilling teeth (444) are respectively fixedly arranged on the side wall of the second rotating arm (443) away from the bottom drill tip (423).

6. A drilling and pouring device for subway station construction according to claim 5, characterized in that: A concrete delivery pipe (6) is provided on the outside of the main drill rod (42), the concrete delivery pipe (6) being fixedly engaged in the pipe fixing sleeve (4321), the lower ends of the concrete delivery pipe (6) being respectively arranged between adjacent second rotating arms (443), and a pipe interface (61) being provided at the upper end opening of the concrete delivery pipe (6).

7. A drilling and pouring device for subway station construction according to claim 6, characterized in that: A main lifting screw (31) is rotatably provided inside the drill lifting rail (3), the lifting block (33) is sleeved on the main lifting screw (31), the lifting block (33) is threadedly connected to the main lifting screw (31), a lifting motor (32) is fixedly provided at the lower end of the drill lifting rail (3), the output end of the lifting motor (32) is connected to the end of the main lifting screw (31), and a control motor (4221) is fixedly provided inside the lower end of the main drill rod (42), the output end of the control motor (4221) is connected to the end of the connecting screw (422).

8. The drilling and pouring device for subway station construction according to claim 7, characterized in that: A cockpit (11) is provided at the front end of the mobile vehicle body (1), a circuit control system is provided in the cockpit (11), and the hydraulic control arm (2), the lifting motor (32), the main rotating motor (411), the control motor (4221), the sleeve adjustment motor (4311), the first micromotor (4342), the adjustment push rod (436) and the second micromotor (4362) are respectively electrically connected to the circuit control system.

Images