Low-clearance construction drilling machine equipment

Abstract

The utility model discloses low-clearance construction drilling machine equipment, relates to the technical field of construction drilling machines, and aims to solve the problems that in bridge engineering, a manual hole digging process is only suitable for conditions with better geological conditions and is not suitable for soft foundation areas, but the heights of machine bodies of a percussion drill, a rotary drill and a rotary drilling drill are generally above 7 meters, 9 meters and 28 meters, and the construction efficiency is low. In order to solve the problems that the existing structure is disturbed and the safety of the existing structure is affected in the construction process of foundation pit heavy excavation, a truss is fixedly installed on one side of the upper portion of a base, the truss comprises a truss installation base and a splicing frame, the splicing frame is located above the truss installation base, and the truss installation base is fixedly installed on one side of the upper portion of the base. A drill bit mounting seat is slidably arranged in the truss, a rotary drilling system or a percussion drill bit is mounted below the drill bit mounting seat, and moving mechanisms are mounted on the front side and the rear side of the base.

Description

Technical Field

[0001] This utility model relates to the field of construction drilling rig technology, specifically a low-headroom construction drilling rig equipment. Background Technology

[0002] With the rapid development of transportation in my country and the continuous increase in highway mileage, there are now over one million highway bridges nationwide. Due to low construction standards and poor construction quality in the early stages, coupled with factors such as reconstruction and expansion in recent years, problems such as pier misalignment or pile foundation settlement are common, seriously affecting the structural and operational safety of bridges. To address this, the method of pile lifting is usually adopted for reinforcement, which involves adding pile foundations to old bridges. In order to better participate in the load-bearing, the new pile foundations are usually arranged as close as possible to the piers. Since the superstructure is generally wider than the substructure, the new pile foundations are still located within the bridge's projection range, which means that the pile foundation construction must be carried out under the bridge.

[0003] For bridge engineering, bored pile technology is usually adopted. Common drilling techniques include impact drilling, rotary drilling, rotary excavation, and manual excavation. Manual excavation is currently a restricted technology and is generally not used. It is only suitable for situations with good geological conditions and is not suitable for soft soil areas. The machine height of impact drilling, rotary drilling, and rotary excavation is generally over 7 meters, 9 meters, and 28 meters respectively, which is not suitable for situations where the clearance height under the bridge is only 3 to 5 meters. If a large foundation pit is excavated, the construction process will also disturb the existing structure and affect the safety of the existing structure. Therefore, we have proposed a low-clearance construction drilling rig to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a low-headroom construction drilling rig to solve the problem mentioned in the background art that the manual excavation process for bridge engineering is only suitable for situations with good geological conditions and is not suitable for soft soil areas. The body height of impact drills, rotary drills and rotary drilling rigs are generally more than 7 meters, 9 meters and 28 meters respectively, which is not suitable for situations where the headroom under the bridge is only 3 to 5 meters. If a large foundation pit is excavated, the construction process will also disturb the existing structure and affect the safety of the existing structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-headroom construction drilling rig, including a base, a truss fixedly installed on one side above the base, the truss including a truss mounting seat and a splicing frame, the splicing frame being located above the truss mounting seat, a drill bit mounting seat slidably disposed inside the truss, a rotary drilling system or impact drill bit being installed below the drill bit mounting seat, and a moving mechanism being installed on the front and rear sides of the base.

[0006] Preferably, an electrical control box is fixedly installed on the other side above the base, a winch is installed on one side of the electrical control box, and a pulley frame is fixedly installed on the top of the truss.

[0007] Preferably, a hydraulic cylinder is installed on one side of the winch, and a hydraulic cylinder connecting seat is slidably installed on one side of the splicing frame. The lower end of the hydraulic cylinder is rotatably connected to the truss, and the upper end of the hydraulic cylinder is rotatably connected to the hydraulic cylinder connecting seat.

[0008] Preferably, one end of the truss mounting base is provided with a pivot end, which is rotatably connected to the truss via the pivot. Truss mounting base fixing rods are fixedly installed at the four corners above the truss mounting base, and splicing frame fixing rods are provided at the four corners of the splicing frame. Auxiliary rod connecting seats are fixedly installed on the inner sides of the truss mounting base fixing rods and the splicing frame fixing rods. The truss mounting base fixing rods and the splicing frame fixing rods correspond to each other and are fixedly connected.

[0009] Preferably, the adjacent truss mounting base fixing rods and the adjacent splicing frame fixing rods are fixedly connected by auxiliary rods, the overlapping parts of the auxiliary rods are fixedly connected, and the auxiliary rods are fixedly connected to the auxiliary rod connecting seats.

[0010] Preferably, the rotary drilling system includes a rotary drilling rig mounting base, a rotary drilling rig shaft, a power head, and a rotary drilling bit. The bit mounting base is fixedly connected to the rotary drilling rig shaft mounting base, the rotary drilling rig shaft mounting base is slidably connected to a truss, the power head is slidably connected to the truss, the rotary drilling rig shaft is located below the rotary drilling rig shaft mounting base and the lower end of the rotary drilling rig shaft passes through the power head, the rotary drilling bit is fixedly installed below the rotary drilling rig shaft, and the rotary drilling rig shaft is drively connected to the power head.

[0011] Preferably, the moving mechanism includes a moving mechanism fixed plate, an electric telescopic cylinder, a lifting plate, a universal wheel axle, and universal wheels. The moving mechanism fixed plate is fixedly located on the front and rear sides of the truss. A lifting plate is provided below the moving mechanism fixed plate. The moving mechanism fixed plate and the lifting plate are fixedly connected by a plurality of electric telescopic cylinders arranged at equal intervals. Universal wheels are installed at equal intervals on one side below the lifting plate. Universal wheel axles are provided inside the universal wheels. The universal wheel axles are rotatably connected to the lifting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The truss of this utility model is splicable. The truss mounting base is fixedly installed on top of the splicing frame. Several trusses can be spliced ​​on top according to the clearance of the drilling area. The pulley frame is installed on top of the truss. The hydraulic cylinder is rotated and installed through the hydraulic cylinder connecting seat. The rotary drilling system is assembled and adjusted, and then fixedly connected to the drill bit mounting base. A steel casing is pre-embedded. Drilling is carried out through the rotary drilling system. Depending on the drilling depth, the rod can be extended when the rotary drilling shaft reaches one meter above the borehole, thereby extending the rotary drilling shaft. When encountering hard rock layers such as pebble layers or strongly weathered fragments, the drill bit can be replaced to continue drilling. This solves the problem that manual excavation in bridge engineering is only suitable for areas with good geological conditions and not for soft soil areas. The height of the machine body of impact drills, rotary drills and rotary drilling rigs is generally over 7 meters, 9 meters and 28 meters respectively, which is not suitable for situations where the clearance height under the bridge is only 3 to 5 meters. If a large foundation pit is excavated, the construction process will also disturb the existing structure and affect the safety of the existing structure.

[0014] 2. This utility model uses a moving mechanism to move the drilling rig to the area where drilling is required. After the movement is completed, the electric telescopic cylinder retracts to move the lifting plate upward, thereby causing the casters to move upward synchronously and leave the ground, so that the truss comes into contact with the ground, thus making the drilling rig stably fixed on the ground. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a working state diagram in this utility model;

[0016] Figure 2 This is a schematic diagram of another working state of the present invention;

[0017] Figure 3 This is an exploded view of the truss in this utility model;

[0018] Figure 4 In this utility model Figure 1 A magnified view of a portion of area A.

[0019] In the diagram: 1. Base; 2. Truss; 3. Electrical control box; 4. Winch; 5. Hydraulic cylinder; 6. Pulley frame; 7. Moving mechanism; 8. Drill bit mounting seat; 9. Rotary drilling spindle mounting seat; 10. Rotary drilling spindle; 11. Power head; 12. Rotary drilling bit; 13. Impact drill bit; 14. Truss mounting seat; 15. Splicing frame; 16. Shaft end; 17. Truss mounting seat fixing rod; 18. Auxiliary rod connecting seat; 19. Splicing frame fixing rod; 20. Auxiliary rod; 21. Hydraulic cylinder connecting seat; 22. Moving mechanism fixing plate; 23. Electric telescopic cylinder; 24. Lifting plate; 25. Universal wheel axle; 26. Universal wheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-4 An embodiment of this utility model provides a low-headroom construction drilling rig, including a base 1, a truss 2 fixedly installed on one side above the base 1, the truss 2 including a truss mounting seat 14 and a splicing frame 15, the splicing frame 15 being located above the truss mounting seat 14, a drill bit mounting seat 8 being slidably arranged inside the truss 2, a rotary drilling system or impact drill bit 13 being installed below the drill bit mounting seat 8, and a moving mechanism 7 being installed on the front and rear sides of the base 1.

[0022] Assemble the truss 2, fix the truss mounting base 14 above the splicing frame 15, first install the splicing frame fixing rod 19 and then install the auxiliary rod 20 in sequence. Depending on the clearance of the drilling area, select how many trusses 2 to splice above. Install the pulley frame 6 above the truss 2, and then install it by rotating it with the hydraulic cylinder connecting seat 21 and the hydraulic cylinder 5. Assemble the rotary drilling system and make adjustments, fix it to the drill bit mounting base 8, pre-embed the steel casing, and drill through the rotary drilling system. Depending on the drilling depth, the rod can be extended when the rotary drilling shaft 10 reaches one meter above the drilling hole, thereby extending the length of the rotary drilling shaft 10. When encountering hard rock layers such as pebble layers or fragmented strongly weathered rock layers, the impact drill bit 13 can be replaced to continue drilling.

[0023] Please see Figure 1-3 An electrical control box 3 is fixedly installed on the other side above the base 1. A winch 4 is installed on one side of the electrical control box 3. A pulley frame 6 is fixedly installed above the truss 2. A hydraulic cylinder 5 is installed on one side of the winch 4. A hydraulic cylinder connecting seat 21 is slidably installed on one side of the splicing frame 15. The lower end of the hydraulic cylinder 5 is rotatably connected to the truss 2, and the upper end of the hydraulic cylinder 5 is rotatably connected to the hydraulic cylinder connecting seat 21.

[0024] Please see Figure 3 One end of the truss mounting base 14 is provided with a pivot end 16, which is rotatably connected to the truss 2 via the pivot. Truss mounting base fixing rods 17 are fixedly installed at the four corners above the truss mounting base 14. Splicing frame fixing rods 19 are provided at the four corners of the splicing frame 15. Auxiliary rod connecting seats 18 are fixedly installed on the inner sides of the truss mounting base fixing rods 17 and the splicing frame fixing rods 19. The truss mounting base fixing rods 17 and the splicing frame fixing rods 19 correspond to each other and are fixedly connected. Adjacent truss mounting base fixing rods 17 and adjacent splicing frame fixing rods 19 are fixedly connected via auxiliary rods 20, with the overlapping parts of the auxiliary rods 20 fixedly connected. The auxiliary rods 20 are fixedly connected to the auxiliary rod connecting seats 18.

[0025] Please see Figure 1 The rotary drilling system includes a rotary drilling shaft mounting base 9, a rotary drilling shaft 10, a power head 11, and a rotary drilling bit 12. The bit mounting base 8 is fixedly connected to the rotary drilling shaft mounting base 9. The rotary drilling shaft mounting base 9 is slidably connected to the truss 2. The power head 11 is slidably connected to the truss 2. The rotary drilling shaft 10 is located below the rotary drilling shaft mounting base 9, and the lower end of the rotary drilling shaft 10 passes through the power head 11. The rotary drilling bit 12 is fixedly installed below the rotary drilling shaft 10. The rotary drilling shaft 10 and the power head 11 are connected in a transmission manner.

[0026] Please see Figure 1 and Figure 4 The moving mechanism 7 includes a moving mechanism fixed plate 22, an electric telescopic cylinder 23, a lifting plate 24, a universal wheel axle 25, and universal wheels 26. The moving mechanism fixed plate 22 is fixedly located on the front and rear sides of the truss 2. The lifting plate 24 is provided below the moving mechanism fixed plate 22. The moving mechanism fixed plate 22 and the lifting plate 24 are fixedly connected by a plurality of electric telescopic cylinders 23 arranged at equal intervals. Universal wheels 26 are installed at equal intervals on one side below the lifting plate 24. Universal wheel axles 25 are provided inside the universal wheels 26. Universal wheel axles 25 are rotatably connected to the lifting plate 24.

[0027] Working principle: During use, the drilling rig is moved to the drilling area via the moving mechanism 7. After the movement is completed, the retracting electric telescopic cylinder 23 drives the lifting plate 24 to move upward, thereby driving the casters 26 to move upward simultaneously and leave the ground, allowing the truss 2 to contact the ground, thus stabilizing the drilling rig on the ground. At this time, the truss 2 is spliced, and the truss mounting base 14 is fixedly installed above the splicing frame 15. First, the splicing frame fixing rod 19 is installed, and then the auxiliary rods 20 are installed in sequence. The number of trusses 2 spliced ​​above can be selected according to the clearance of the drilling area. The pulley frame 6 is installed above the truss 2, and then the hydraulic cylinder connecting seat 21 is rotated and installed with the hydraulic cylinder 5. Assembly is completed. The drilling system is adjusted and fixedly connected to the drill bit mounting base 8. The drilling angle can be adjusted by the telescopic hydraulic cylinder to make a certain angle between the truss 2 and the base 1. A steel casing is pre-embedded, and the rotary drilling system is used to drill. Depending on the drilling depth, the rotary drilling shaft 10 can be extended when it reaches one meter above the hole, thereby extending the length of the rotary drilling shaft 10. When encountering hard rock layers such as pebble layers or fragmented, strongly weathered rock layers, the impact drill bit 13 can be replaced to continue drilling. After drilling is completed, the drill bit is removed, the hole is cleaned, and the lower steel cage is spliced ​​every 3 meters. After the steel cage is installed in place, the hole is cleaned a second time, and underwater concrete is poured to complete the drilling operation.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-clearance construction drill rig apparatus comprising a base (1), characterised in that: The side above the base (1) is fixedly installed with a truss (2), the truss (2) includes truss mounting seat (14) and splicing frame (15), the splicing frame (15) is located above the truss mounting seat (14), the inside of the truss (2) is slidably provided with a drill mounting seat (8), the lower side of the drill mounting seat (8) is installed with a rotary drilling system or impact drill bit (13), the front side and the rear side of the base (1) are installed with a moving mechanism (7).

2. A low headroom construction drill rig apparatus as claimed in claim 1, characterised in that: The other side above the base (1) is fixedly installed with an electric control box (3), one side of the electric control box (3) is installed with a winch (4), the upper side of the truss (2) is fixedly installed with a pulley frame (6).

3. A low headroom construction drill rig apparatus as claimed in claim 2, characterised in that: One side of the winch (4) is installed with a hydraulic cylinder (5), one side of the splicing frame (15) is slidably installed with a hydraulic cylinder connecting seat (21), the lower end of the hydraulic cylinder (5) is rotatably connected with the truss (2), and the upper end of the hydraulic cylinder (5) is rotatably connected with the hydraulic cylinder connecting seat (21).

4. A low headroom construction drill rig apparatus as claimed in claim 1, characterized in that: One end of the truss mounting seat (14) is provided with a rotating shaft end (16), the rotating shaft end (16) is rotatably connected with the truss (2) through a rotating shaft, four corners of the upper side of the truss mounting seat (14) are fixedly installed with truss mounting seat fixed rods (17), four corners of the splicing frame (15) are provided with splicing frame fixed rods (19), the inner sides of the truss mounting seat fixed rods (17) and the splicing frame fixed rods (19) are fixedly installed with auxiliary rod connecting seats (18), and the truss mounting seat fixed rods (17) and the splicing frame fixed rods (19) are fixedly connected in correspondence.

5. A low headroom construction drill rig apparatus as claimed in claim 4, characterised in that: The adjacent truss mounting seat fixed rods (17) and the adjacent splicing frame fixed rods (19) are fixedly connected through auxiliary rods (20), the auxiliary rods (20) are fixedly connected at the overlapping positions, and the auxiliary rods (20) are fixedly connected with the auxiliary rod connecting seats (18).

6. A low headroom construction drill rig apparatus as claimed in claim 1, characterized by: The rotary drilling system includes a rotary drilling shaft mounting seat (9), a rotary drilling shaft (10), a power head (11) and a rotary drilling bit (12), the drill mounting seat (8) is fixedly connected with the rotary drilling shaft mounting seat (9), the rotary drilling shaft mounting seat (9) is slidably connected with the truss (2), the power head (11) is slidably connected with the truss (2), the rotary drilling shaft (10) is located below the rotary drilling shaft mounting seat (9) and the lower end of the rotary drilling shaft (10) penetrates the power head (11), the rotary drilling bit (12) is fixedly installed below the rotary drilling shaft (10), and the rotary drilling shaft (10) is in transmission connection with the power head (11).

7. A low headroom construction drill rig apparatus as claimed in claim 1, characterized by: Said moving mechanism (7) includes moving mechanism fixed plate (22), electric telescopic cylinder (23), lifting plate (24), universal wheel shaft (25) and universal wheel (26), the moving mechanism fixed plate (22) is fixed in the front and rear sides of truss (2), the lifting plate (24) is arranged below the moving mechanism fixed plate (22), the moving mechanism fixed plate (22) is fixedly connected with the lifting plate (24) through multiple electric telescopic cylinders (23) arranged at equal intervals, one side below the lifting plate (24) is installed with universal wheel (26) at equal intervals, the inside of universal wheel (26) is provided with universal wheel shaft (25), and the universal wheel shaft (25) is rotatably connected with the lifting plate (24).

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