A follow-up device for borehole pile casing in karst geology

Abstract

This utility model discloses a casing follow-up device for drilled piles in karst geological conditions, including symmetrically arranged I-beam rails and a moving mechanism located on them. Based on feedback from an electronic level, the lower seat is adjusted to a horizontal state via independently controlled lower hydraulic cylinders. The casing is then lifted by a crane to the center above the upper seat and inserted. A lower clamping mechanism holds the casing, while an upper hydraulic cylinder controls the upper seat to rise. The upper clamping mechanism holds the casing, and the lower clamping mechanism releases it. The upper and lower clamping mechanisms work alternately, with the upper hydraulic cylinder controlling the casing's descent. During casing docking, a servo motor controls the casing's rotation through the meshing of a drive gear and a gear ring seat, ensuring precise docking of the upper and lower casings. After casing construction at one station is completed, the wheel-driven vehicle moves along the I-beam rails to the next station, repeating the above construction process to complete the casing construction.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and in particular to a follow-up device for borehole pile casing in karst geology. Background Technology

[0002] As a type of borehole wall support structure, bored pile casing has the following main functions:

[0003] 1. Supporting the borehole wall: During the drilling process, the casing can support the borehole wall, providing it with certain support and preventing the borehole wall from collapsing due to loosening of the strata.

[0004] 2. Maintaining borehole stability: During bored pile construction, the strata drilled may be affected by factors such as the strata's own stress and changes in groundwater level, making them prone to deformation or damage. Installing a casing can effectively maintain the stability of the borehole wall and reduce drilling difficulty.

[0005] 3. Reduce borehole wall collapse: During bored pile construction, groundwater often enters the borehole through the borehole wall, and silt and debris can easily fall off. Coupled with changes in geological conditions, the risk of borehole wall collapse is significant. Installing a casing can reduce the risk of borehole wall collapse and effectively ensure construction safety.

[0006] During the construction of bored piles, casing needs to be driven in. Currently, the driving of casing is controlled by a crane to control the sinking of the casing, which has poor control accuracy. Moreover, there are certain difficulties in the process of connecting the upper and lower casings. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a follow-up device for borehole pile casing in karst geology.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A karst geological borehole pile casing follow-up device includes symmetrically arranged I-beam rails and a moving mechanism located thereon. The moving mechanism is equipped with a lower seat body via a lifting mechanism one. The top of the lower seat body is connected to a middle seat body via a rotating mechanism. The middle seat body is connected to an upper seat body via a lifting mechanism two. The middle parts of the upper seat body and the middle seat body are respectively provided with an upper clamping mechanism and a lower clamping mechanism. An electronic level is installed on the lower seat body.

[0010] Preferably, the moving mechanism includes a seat, with wheels symmetrically arranged on both sides of the seat, and the wheels are arranged in pairs, symmetrically distributed on the I-beam rail. The wheels are connected to the drive mechanism mounted on the seat through a transmission mechanism, and a support mechanism is provided around the seat.

[0011] Preferably, the lifting mechanism includes lower hydraulic cylinders installed at the four corners of the seat, the output end of the lower hydraulic cylinders being spherically hinged to the lower seat body, and each lower hydraulic cylinder being independently controlled;

[0012] The carriage includes a lower carriage, and an upper carriage is slidably connected to the top of the lower carriage via a guide rail. The relative movement direction of the lower carriage and the upper carriage is perpendicular to the forward movement direction of the carriage. A fixed seat is installed on the side wall of the lower carriage, and a lead screw is threadedly connected to the fixed seat. The lead screw is rotatably connected to the upper carriage.

[0013] Preferably, the rotating mechanism includes a gear ring seat installed at the bottom of the middle seat, the gear ring seat being rotatably connected to the lower seat, a servo motor being installed on the lower seat, and a drive gear meshing with the gear ring seat being installed at the output end of the servo motor.

[0014] Preferably, the second lifting mechanism includes upper hydraulic cylinders installed at the four corners of the top of the middle seat, and the output end of the upper hydraulic cylinder is installed at the bottom of the upper seat.

[0015] Preferably, both the upper clamping mechanism and the lower clamping mechanism include a rear hydraulic cylinder, which is connected to the middle seat and the upper seat respectively. A slide is installed at the output end of the rear hydraulic cylinder, and a middle hinge seat is provided on the other side of the slide. A clamping plate is hinged to the middle hinge seat at an angle, and a front cylinder is hinged to the free end of the clamping plate. The front cylinder is fixed to the slide through the side hinge seat.

[0016] Preferably, limit rods are symmetrically arranged on the side of the slide away from the clamping plate, and the limit rods are slidably connected to the middle seat body and the upper seat body respectively.

[0017] Preferably, the top section of the I-beam rail has a notch, and an arc-shaped ramp is provided at the notch. The top surface of the arc-shaped ramp is tangent to the top of the I-beam rail, and the lower end of the arc-shaped ramp is a horizontal section, which is tangent to the wheel below.

[0018] Preferably, the support mechanism includes mounting seats installed at the four corners of the lower seat, with support rods rotatably connected to the mounting seats, support hydraulic cylinders installed at the ends of the support rods, and pads connected to the output ends of the support hydraulic cylinders.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: Based on the feedback of the electronic level, the lower seat is adjusted to a horizontal state through independently controlled lower hydraulic cylinders. Simultaneously, the lower hydraulic cylinders rise and fall synchronously to adjust the lower seat to a predetermined height. The casing is lifted to the center above the upper seat using a crane and inserted. The lower clamping mechanism holds the casing, while the upper hydraulic cylinder controls the upper seat to rise. The upper clamping mechanism holds the casing, and the lower clamping mechanism releases the casing. The upper and lower clamping mechanisms work alternately, with the upper hydraulic cylinder controlling the descent of the casing. During casing docking, a servo motor controls the rotation of the casing through the meshing of a drive gear and a gear ring seat, ensuring precise docking of the upper and lower casings. After the casing construction at this station is completed, the wheel-driven vehicle moves along the I-beam rail to the next station, repeating the above construction process to complete the casing construction. Attached Figure Description

[0020] To illustrate the technical solutions in the embodiments of this utility model or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the structure proposed in this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure proposed in this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure proposed in this utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the upper clamping mechanism and the lower clamping mechanism proposed in this utility model.

[0025] In the diagram: I-beam rail 1, seat 2, lower seat 21, upper seat 22, guide rail 23, fixed seat 24, lead screw 25, wheel 3, lower hydraulic cylinder 4, lower seat body 5, gear ring seat 6, servo motor 7, drive gear 8, middle seat body 9, upper clamping mechanism 10, slide 101, limit rod 102, rear hydraulic cylinder 103, side hinge seat 104, front cylinder 105, middle hinge seat 106, clamping plate 107, upper hydraulic cylinder 11, upper seat body 12, lower clamping mechanism 13, curved ramp 14, notch 15, support mechanism 16, mounting seat 161, support rod 162, support hydraulic cylinder 163, pad 164. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1-4 A karst geological drilled pile casing follow-up device includes symmetrically arranged I-beam rails 1 and a moving mechanism located on them. The moving mechanism is equipped with a lower seat 5 via a lifting mechanism 1. The top of the lower seat 5 is connected to a middle seat 9 via a rotating mechanism. The middle seat 9 is connected to an upper seat 12 via a lifting mechanism 2. The middle parts of the upper seat 12 and the middle seat 9 are respectively equipped with an upper clamping mechanism 10 and a lower clamping mechanism 13. An electronic level is installed on the lower seat 5. Each hydraulic component is controlled by an external hydraulic system.

[0028] The spacing of the I-beam rail 1 is adjusted according to the wheel track and leveled. The carriage seat 2 is then hoisted onto the I-beam rail 1. The carriage seat 2 slides down the curved ramp 14. When it reaches the horizontal section, the wheels 3 are distributed vertically on the I-beam rail 1 and move back and forth along the I-beam rail 1. Based on the feedback from the electronic level, the lower seat 5 is adjusted to a horizontal state through the independently controlled lower hydraulic cylinders 4. At the same time, based on this, each lower hydraulic cylinder 4 is raised and lowered synchronously to adjust the lower seat 5 to the predetermined height. The protective casing is then hoisted to the center above the upper seat 12 using a crane and inserted, using a lower clamping machine. The upper clamping mechanism 10 clamps the protective casing, while the upper hydraulic cylinder 11 controls the upper seat 12 to rise. The upper clamping mechanism 10 clamps the protective casing, and the lower clamping mechanism 13 releases the protective casing. The upper clamping mechanism 10 and the lower clamping mechanism 13 work alternately, and the upper hydraulic cylinder 11 controls the lowering of the protective casing. When the protective casing is docked, the servo motor 7 controls the rotation of the protective casing through the meshing of the drive gear 8 and the gear ring seat 6 to ensure precise docking of the upper and lower protective casings. After the protective casing construction at this station is completed, the wheel 3 drives the seat 2 to move along the I-beam rail 1 to the next station, and repeats the above construction process to complete the protective casing construction process.

[0029] In this embodiment, the moving mechanism includes a seat 2, with wheels 3 symmetrically arranged on both sides of the seat 2. The wheels 3 are arranged in pairs and symmetrically distributed on the I-beam rail 1. The wheels 3 are connected to the drive mechanism installed on the seat 2 through a transmission mechanism. Support mechanisms 16 are provided around the seat 2.

[0030] In this embodiment, the lifting mechanism includes lower hydraulic cylinders 4 installed at the four corners of the seat 2. The output end of the lower hydraulic cylinder 4 is spherically hinged to the lower seat body 5, and each lower hydraulic cylinder 4 is independently controlled.

[0031] The seat 2 includes a lower seat 21, and an upper seat 22 is slidably connected to the top of the lower seat 21 via a guide rail 23. The relative movement direction of the lower seat 21 and the upper seat 22 is perpendicular to the forward direction of the seat 2. A fixed seat 24 is installed on the side wall of the lower seat 21, and a lead screw 25 is threaded onto the fixed seat 24. The lead screw 25 is rotatably connected to the upper seat 22 to achieve lateral position adjustment and reduce deviation.

[0032] In this embodiment, the rotating mechanism includes a gear ring seat 6 installed at the bottom of the middle seat 9. The gear ring seat 6 is rotatably connected to the lower seat 5. A servo motor 7 is installed on the lower seat 5. The output end of the servo motor 7 is equipped with a drive gear 8 that meshes with the gear ring seat 6.

[0033] In this embodiment, the lifting mechanism 2 includes upper hydraulic cylinders 11 installed at the four corners of the top of the middle seat 9, and the output end of the upper hydraulic cylinders 11 is installed at the bottom of the upper seat 12.

[0034] In this embodiment, both the upper clamping mechanism 10 and the lower clamping mechanism 13 include a rear hydraulic cylinder 103. The rear hydraulic cylinder 103 is connected to the middle seat 9 and the upper seat 12 respectively. A slide 101 is installed at the output end of the rear hydraulic cylinder 103. A middle hinge seat 106 is provided on the other side of the slide 101. A clamping plate 107 is hinged on the middle hinge seat 106 at an angle. A front cylinder 105 is hinged to the free end of the clamping plate 107. The front cylinder 105 is fixed on the slide 101 by a side hinge seat 104.

[0035] In this embodiment, limit rods 102 are symmetrically arranged on the side of the slide block 101 away from the clamping plate 107, and the limit rods 102 are slidably connected to the middle seat body 9 and the upper seat body 12 respectively.

[0036] In this embodiment, a notch 15 is provided at the top of the I-beam rail 1, and an arc-shaped ramp 14 is provided at the notch 15. The top surface of the arc-shaped ramp 14 is tangent to the top of the I-beam rail 1, and the lower end of the arc-shaped ramp 14 is a horizontal section, which is tangent to the wheel 3 below.

[0037] In this embodiment, the support mechanism 16 includes mounting seats 161 installed at the four corners of the lower seat 21. Support rods 162 are rotatably connected to the mounting seats 161. Support hydraulic cylinders 163 are installed at the ends of the support rods 162. The output end of the support hydraulic cylinders 163 is connected to a pad 164. During construction, the pad is unfolded and pressed against the ground to form a "multi-point support" with the I-beam rail, which counteracts the reaction force generated when the casing descends (especially in loose strata of karst geology) and reduces the overall shaking of the device.

[0038] The construction process for the casing follow-up device for bored piles in karst geological conditions includes the following steps:

[0039] S1: Adjust the spacing of the I-beam rail 1 according to the wheel track and level it. Then, hoist the seat 2 onto the I-beam rail 1. The seat 2 slides down the arc-shaped ramp 14. When it moves to the horizontal section, the wheels 3 are distributed vertically on the I-beam rail 1 and move back and forth along the I-beam rail 1.

[0040] S2: Based on the feedback from the electronic level, the lower seat 5 is adjusted to a horizontal state by each independently controlled lower hydraulic cylinder 4. At the same time, each lower hydraulic cylinder 4 is raised and lowered synchronously to adjust the lower seat 5 to the predetermined height.

[0041] S3: The casing is lifted to the center above the upper seat 12 by a crane and inserted. The casing is clamped by the lower clamping mechanism 13. The upper hydraulic cylinder 11 controls the upper seat 12 to rise. The upper clamping mechanism 10 clamps the casing, and the lower clamping mechanism 13 releases the casing. The upper clamping mechanism 10 and the lower clamping mechanism 13 work alternately. The casing is lowered by the upper hydraulic cylinder 11.

[0042] S4: During the casing docking, the servo motor 7 controls the rotation of the casing through the meshing of the drive gear 8 and the gear ring seat 6 to ensure precise docking of the upper and lower casings;

[0043] S5: After the casing construction at this work station is completed, the wheel 3 drives the seat 2 to move along the I-beam rail 1 to the next work station and repeat the above construction process.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A karst geology drill pile casing following device, comprising an I-shaped rail (1) arranged symmetrically and a moving mechanism located thereon, characterized in that, The moving mechanism is equipped with a lower seat (5) via a lifting mechanism. The top of the lower seat (5) is connected to a middle seat (9) via a rotating mechanism. The middle seat (9) is connected to an upper seat (12) via a lifting mechanism. The middle parts of the upper seat (12) and the middle seat (9) are respectively provided with an upper clamping mechanism (10) and a lower clamping mechanism (13). An electronic level is installed on the lower seat (5).

2. The karst geological bored pile casing following-up device according to claim 1, characterized in that, The moving mechanism includes a seat (2), with wheels (3) symmetrically arranged on both sides of the seat (2), and the wheels (3) are arranged in pairs, symmetrically distributed on the I-beam rail (1). The wheels (3) are connected to the drive mechanism installed on the seat (2) through the transmission mechanism. Support mechanisms (16) are arranged around the seat (2).

3. The karst geological bored pile casing following-up device according to claim 2, characterized in that, The lifting mechanism includes lower hydraulic cylinders (4) installed at the four corners of the seat (2). The output end of the lower hydraulic cylinder (4) is spherically hinged to the lower seat body (5). Each lower hydraulic cylinder (4) is independently controlled. The seat (2) includes a lower seat (21), and an upper seat (22) is slidably connected to the top of the lower seat (21) via a guide rail (23). The relative movement direction of the lower seat (21) and the upper seat (22) is perpendicular to the forward direction of the seat (2). A fixed seat (24) is installed on the side wall of the lower seat (21), and a screw (25) is threaded onto the fixed seat (24). The screw (25) is rotatably connected to the upper seat (22).

4. The karst geological bored pile casing following-up device according to claim 3, characterized in that, The rotating mechanism includes a gear ring seat (6) installed at the bottom of the middle seat (9), the gear ring seat (6) is rotatably connected to the lower seat (5), a servo motor (7) is installed on the lower seat (5), and an active gear (8) that meshes with the gear ring seat (6) is installed at the output end of the servo motor (7).

5. The karst geological bored pile casing following-up device according to claim 4, characterized in that, The second lifting mechanism includes upper hydraulic cylinders (11) installed at the four corners of the top of the middle seat (9), and the output end of the upper hydraulic cylinders (11) is installed at the bottom of the upper seat (12).

6. A karst geological bored pile casing follow-up device according to claim 5, characterized in that, Both the upper clamping mechanism (10) and the lower clamping mechanism (13) include a rear hydraulic cylinder (103). The rear hydraulic cylinder (103) is connected to the middle seat (9) and the upper seat (12) respectively. A slide (101) is installed at the output end of the rear hydraulic cylinder (103). A middle hinge seat (106) is provided on the other side of the slide seat (101). A clamping plate (107) is hinged on the middle hinge seat (106) at an angle. A front cylinder (105) is hinged to the free end of the clamping plate (107). The front cylinder (105) is fixed on the slide seat (101) by a side hinge seat (104).

7. The karst geological bored pile casing following-up device according to claim 6, characterized in that, The slide (101) is symmetrically provided with limit rods (102) on the side away from the clamp (107), and the limit rods (102) are slidably connected to the middle seat (9) and the upper seat (12) respectively.

8. The karst geological bored pile casing following-up device according to claim 7, characterized in that, The top section of the I-beam rail (1) has a notch (15), and an arc-shaped ramp (14) is provided at the notch (15). The top surface of the arc-shaped ramp (14) is tangent to the top of the I-beam rail (1). The lower end of the arc-shaped ramp (14) is a horizontal section, and the horizontal section is tangent to the wheel (3) below.

9. The karst geological bored pile casing following-up device according to claim 8, characterized in that, The support mechanism (16) includes mounting seats (161) installed at the four corners of the lower seat (21), a support rod (162) is rotatably connected to the mounting seat (161), a support hydraulic cylinder (163) is installed at the end of the support rod (162), and a pad (164) is connected to the output end of the support hydraulic cylinder (163).

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