Auxiliary device for detecting cast-in-place pile
Through the self-locking and limiting mechanism design of the worm and worm gear ring transmission, the problem that traditional cast-in-place pile detection devices cannot adapt to drill pipes of different specifications is solved, which improves stability and adaptability, and extends the service life.
Patent Information
- Application Number
- CN202411652021.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional auxiliary devices for cast-injected pile detection cannot be effectively corrected according to the outer diameter of the drill pipe of different specifications, resulting in a reduced stability of use.
The self-locking ability of the worm and worm gear ring transmission limits the self-rotation of the inner tooth ring and the first gear, and the angle adjustment of the mounting plate is achieved through the coordination of the inner tooth ring, the first gear and the rotation shaft, and the limiting mechanism and spring buffer protection are used. Steel casing reduces friction and improves service life.
It improves the stability and adaptability of the device, provides good guidance on drill pipes of different sizes, extends the service life of the limiting device, and reduces the friction during the drill pipe drop.
Smart Images
Figure CN119266227A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cast-in-place pile construction, and in particular to an auxiliary device for cast-in-place pile detection. Background Art
[0002] During bored pile operations, auxiliary corrections are required, including guidance corrections for the drill rod. Although traditional casings can have a preliminary guiding effect on the drill rod, they cannot be adjusted accordingly based on the actual outer diameter of the drill rod, and cannot provide good correction effects for drill rods of different specifications.
[0003] The existing auxiliary device for bored pile detection includes a casing, the top end of the casing is covered with a mounting tube, a rotation limiting mechanism is installed in the mounting tube, the rotation limiting mechanism includes four worms, the four worms are rotatably installed in the mounting tube, the bottom ends of the four worms are vertically fixed with driving gear tubes, the mounting tube is rotatably installed with a gear ring, the gear ring is meshed with a plurality of driving gear tubes, the bottom ends of the four driving gear tubes are meshed and connected with two first racks, the two first racks are symmetrically distributed about the center of the corresponding driving gear tube, and the ends of the two first racks are fixed with springs.
[0004] Regarding the above-mentioned related technologies, the inventor believes that although the extrusion spring can push the arc-shaped extrusion head to collide with the outer wall of the casing, after the worm stops rotating, the limit rack is pushed back to move under the elasticity of the spring, thereby driving the driving gear tube and the worm to rotate, so that the worm wheel rotates again, causing the ball to break away from contact with the drill rod, thereby reducing the stability of the entire device. Summary of the invention
[0005] In view of the deficiencies of the prior art, the present invention develops an auxiliary device for bored pile detection, which can utilize the self-locking property of the worm and worm gear ring transmission to limit the self-rotation of the inner gear ring and the first gear, thereby limiting the probability of the shaft rotating, thereby improving the stability of the entire device during use.
[0006] The technical solution to the technical problem solved by the present invention is: an auxiliary device for bored pile detection, comprising a mounting tube, a tube wall array of the mounting tube being provided with an avoidance opening, the mounting tube being rotatably connected to a rotating shaft at the avoidance opening along the longitudinal direction, a mounting plate being keyed on the rotating shaft, a first gear being provided on a side of the mounting plate close to the rotating shaft in the length direction, the first gear being keyed to the rotating shaft, both ends of the mounting tube in the through direction being connected to an annular plate, an inner gear ring being rotatably connected between the two annular plates, the inner wall of the inner gear being gap-matched with the outer wall of the mounting tube, the first gear being meshingly connected to the inner gear ring, the inner gear ring being driven by a driving assembly, a bottom ring being provided at one end in the through direction of the mounting tube, a limiting mechanism being provided between the bottom ring and the mounting tube.
[0007] Preferably, the limiting mechanism is arranged in a circular array, and the limiting mechanism includes a second gear, a rack and a guide block. The second gear is connected to the rotating shaft key, the rack is symmetrically arranged on both sides of the second gear in the horizontal direction and meshes with the second gear, the guide block is symmetrically arranged on both sides of the second gear in the horizontal direction, and the rack is slidably connected to the guide block.
[0008] Preferably, a sliding rod is slidably connected to the rack, the sliding rods on the symmetrically arranged group of racks are arranged back to back, the end of the sliding rod away from the rack is connected to an extrusion head, and a spring is connected between the extrusion head and the rack.
[0009] Preferably, a ball bearing array is provided on the side surface of the mounting plate.
[0010] Preferably, the drive assembly includes a worm gear ring and a vertical plate group, the worm gear ring is keyed to the outer wall of the inner gear ring, the vertical plate group array is arranged between two annular plates, a worm is connected to the vertical plate group for horizontal rotation, and the worm is meshingly connected to the worm gear ring.
[0011] Preferably, both ends of the worm are connected with fixing blocks, and the interiors of the fixing blocks are provided with hexagonal nuts.
[0012] Preferably, a reinforcing rib is provided on a side of the vertical plate group away from the fixed block, and the reinforcing rib is connected to the annular plate and the vertical plate group.
[0013] The effects provided in the content of the invention are only the effects of the embodiments, rather than all the effects of the invention. The above technical solution has the following advantages or beneficial effects: 1. By setting the auxiliary positioning device as a mounting plate, a wider support surface can be provided, which can achieve a better auxiliary positioning effect; 2. The present invention can synchronously control the rotation of the first gear and the second gear by rotating the worm, thereby driving the mounting plate and the limit device to rotate into place at the same time, and the operation is simple; 3. By setting the limit device as a set of racks arranged in opposite directions, a wider range of usage scenarios can be achieved, and the inner wall of a steel casing with a larger diameter can be clamped, and the outer wall of a steel casing with a smaller diameter can also be clamped toward the center of the circle; 4. By connecting the spring on the rack with the sliding rod and the extrusion head, it can provide a buffer when the limit device is in effect, preventing damage to the steel casing, and can also better protect the limit device and increase the service life of the limit device; 5. By arranging balls in an array on the mounting plate, the friction during the lowering of the drill pipe can be reduced, thereby increasing the service life of the mounting plate; 6. By setting up multiple sets of drive components, it can be easily adjusted in multiple directions; 7. By providing reinforcing ribs on the side of the vertical plate group away from the fixed block, the stability of the vertical plate group can be improved without affecting the operation of the rotating worm; 8. The present invention utilizes the self-locking property of the worm and worm gear ring transmission to limit the self-rotation of the inner gear ring and the first gear, thereby limiting the probability of the shaft rotating, thereby improving the stability of the entire device during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The overall structure of the present invention Figure 1 ; Figure 2 for Figure 1 A partial enlarged view of the middle A area; Figure 3 The overall structure of the present invention Figure 2 .
[0015] Among them: 1. Mounting cylinder; 2. Avoidance; 3. Mounting plate; 4. First gear; 5. Ball; 6. Internal gear ring; 7. Worm gear ring; 8. Vertical plate group; 9. Reinforcing ribs; 10. Worm; 11. Fixed block; 12. Hexagon socket nut; 13. Limiting mechanism; 131. Second gear; 132. Rack; 133. Guide block; 134. Sliding rod; 135. Spring; 136. Extrusion head; 14. Rotating shaft; 15. Bottom ring; 16. Ring plate. DETAILED DESCRIPTION
[0016] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.
[0017] Example 1 See also Figures 1 to 3 , an auxiliary device for bored pile detection, comprising a mounting tube 1, a tube wall array of the mounting tube 1 is provided with an avoidance opening 2, the mounting tube 1 is rotatably connected with a rotating shaft 14 at the avoidance opening 2 in the longitudinal direction, a mounting plate 3 is keyed on the rotating shaft 14, a first gear 4 is provided on the side of the mounting plate 3 close to the rotating shaft 14 in the length direction, the first gear 4 is keyed to the rotating shaft 14, both ends of the mounting tube 1 in the through direction are connected with an annular plate 16, an inner gear ring 6 is rotatably connected between the two annular plates 16, the inner wall of the inner gear is gap-matched with the outer wall of the mounting tube 1, the first gear 4 is meshed and connected with the inner gear ring 6, the inner gear ring 6 is driven by a driving assembly, a bottom ring 15 is provided at one end in the through direction of the mounting tube 1, a limiting mechanism 13 is provided between the bottom ring 15 and the mounting tube 1.
[0018] The limiting mechanism 13 is arranged in a circular array, and the limiting mechanism 13 includes a second gear 131, a rack 132 and a guide block 133. The second gear 131 is key-connected to the rotating shaft 14, the rack 132 is symmetrically arranged on both sides of the second gear 131 in the horizontal direction and meshes with the second gear 131, the guide block 133 is symmetrically arranged on both sides of the second gear 131 in the horizontal direction, and the rack 132 is slidably connected to the guide block 133.
[0019] A sliding rod 134 is slidably connected to the rack 132. The sliding rods 134 on the symmetrically arranged group of racks 132 are arranged back to back. An extrusion head 136 is connected to the end of the sliding rod 134 away from the rack 132. A spring 135 is connected between the extrusion head 136 and the rack 132.
[0020] The side array of the mounting plate 3 is provided with balls 5 .
[0021] The driving assembly includes a worm gear ring 7 and a vertical plate group 8. The worm gear ring 7 is key-connected to the outer wall of the inner gear ring 6. The vertical plate group 8 is arrayed between two annular plates 16. A worm 10 is connected to the vertical plate group 8 for horizontal rotation. The worm 10 is meshed with the worm gear ring 7.
[0022] Both ends of the worm 10 are connected to fixing blocks 11 , and the fixing blocks 11 are provided with hexagonal nuts 12 inside.
[0023] A reinforcing rib 9 is provided on one side of the vertical plate group 8 away from the fixing block 11 , and the reinforcing rib 9 is connected to the annular plate 16 and the vertical plate group 8 .
[0024] Principle and operation process The present invention realizes the angle adjustment of the mounting plate 3 by the cooperation of the inner gear ring 6, the first gear 4 and the rotating shaft 14. When the inner gear ring 6 rotates, since it is meshed with the first gear 4, the first gear 4 will rotate with the rotation of the inner gear ring 6. The first gear 4 is key-connected with the rotating shaft 14, and the rotating shaft 14 is key-connected with the mounting plate 3, so the rotation of the inner gear ring 6 can drive the mounting plate 3 to rotate synchronously. This transmission mode can accurately control the angle of the mounting plate 3, so that the mounting plate 3 can adapt to drill rods of different sizes and provide suitable guidance for the drill rods. The rotation of the inner gear ring 6 is driven by the meshing of the worm 10 and the worm wheel ring 7. When the worm 10 rotates, it drives the worm wheel ring 7 to rotate. Since the worm wheel ring 7 is key-connected with the inner gear ring 6, the rotation of the inner gear ring 6 is realized. In addition, the transmission of the worm 10 and the worm wheel ring 7 has self-locking property, which can limit the rotation of the rotating shaft 14 and ensure the stability of the mounting plate 3 after the angle is adjusted.
[0025] The limiting mechanism 13 is mainly realized by the second gear 131, the rack 132, the guide block 133, the sliding rod 134, the extrusion head 136 and the spring 135. The second gear 131 is key-connected with the rotating shaft 14. When the rotating shaft 14 rotates, the second gear 131 rotates accordingly. Since the racks 132 are meshed and connected on both sides of the second gear 131, the rotation of the second gear 131 will cause the rack 132 to slide on the guide block 133. The sliding rod 134, the extrusion head 136 and the spring 135 are arranged on the opposite sides of the second gears 131 on both sides. When the rack 132 slides, it will drive the extrusion head 136 to move, and the extrusion head 136 can be tightly pressed against the inner wall or the outer wall of the steel casing, thereby limiting the installation tube 1. The existence of the spring 135 allows the extrusion head 136 to have a certain buffer when it contacts the casing wall, preventing damage to the steel casing due to rigid contact, and also protecting the limiting device itself.
[0026] Balls 5 are arranged in an array on the side of the mounting plate 3. When the drill rod moves between the mounting plates 3, the balls 5 come into contact with the drill rod, converting the original sliding friction between the mounting plate 3 and the drill rod into rolling friction of the balls 5, greatly reducing the friction force, thereby reducing the wear between the mounting plate 3 and the drill rod, achieving isolation protection for the mounting plate 3, and also facilitating the smooth upward and downward telescopic movement of the drill rod. Reinforcing ribs 9 are symmetrically fixedly connected between the vertical plate groups 8, and the reinforcing ribs 9 are fixedly connected to the annular plate 16. The reinforcing ribs 9 can enhance the structural strength of the vertical plate group 8, making the vertical plate group 8 more stable when bearing the force caused by the rotation of the worm 10 and the external force applied to the device in a complex environment, thereby improving the connection stability between the vertical plate group 8 and the annular plate 16, thereby ensuring the reliability of the entire drive assembly without affecting the normal rotation operation of the worm 10.
[0027] When in use, the installation tube 1 is placed at a suitable position in the casing of the bored pile to ensure that it is basically in a vertical state, and the center of the installation tube 1 is roughly aligned with the design center of the bored pile. When placing, one side of the bottom ring 15 is downward and aligned with the steel casing, so that the limit device is located on the inner wall or outer wall of the steel casing; through the hexagonal nut 12, the worm 10 is installed on the two sets of vertical plate groups 8 using corresponding tools to ensure that the worm 10 and the worm wheel ring 7 can be properly meshed and the worm 10 can rotate freely; the worm 10 is rotated using a tool, and the rotation of the worm 10 drives the worm wheel ring 7 meshed with it to rotate. Since the worm wheel ring 7 is fixedly connected to the inner gear ring 6, the inner gear ring 6 starts to rotate synchronously. When the inner gear ring 6 rotates, its inner wall meshes with the first gear 4, driving the first gear 4 to rotate. The rotation of the first gear 4 drives the rotating shaft 14 fixedly connected to it to rotate. As the rotating shaft 14 rotates, on the one hand, the mounting plate 3 fixed on the rotating shaft 14 starts to rotate synchronously, and its angle is adjusted so that the mounting plate 3 gradually approaches the direction of the drill pipe. On the other hand, the second gear 131 key-connected to the rotating shaft 14 also starts to rotate. The rotation of the second gear 131 drives the racks 132 meshing on both sides thereof to slide in the direction away from each other under the guidance of the guide block 133. The sliding of the rack 132 drives the sliding rod 134 to move, thereby moving the extrusion head 136 toward the wall of the casing. The worm 10 is continuously rotated until the extrusion head 136 is tightly pressed against the outer wall of the casing, thereby achieving stable positioning of the mounting tube 1 and preventing the mounting tube 1 from shaking or shifting during operation. While the extrusion head 136 completes the positioning, continue to adjust the angle of the mounting plate 3 until at least one set of balls 5 on each mounting plate 3 contacts the drill rod. At this point, the mounting plate 3 provides guide support for the drill rod, and the presence of the balls 5 reduces the friction between the drill rod and the mounting plate 3, ensuring that the drill rod can move smoothly up and down between the mounting plates 3.
[0028] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.
Claims
1. An auxiliary device for bored pile detection, characterized in that: The invention comprises a mounting tube (1), wherein a tube wall array of the mounting tube (1) is provided with an avoidance opening (2), the mounting tube (1) is rotatably connected to a rotating shaft (14) at the avoidance opening (2) in the longitudinal direction, a mounting plate (3) is keyed on the rotating shaft (14), a first gear (4) is provided on a side of the mounting plate (3) close to the rotating shaft (14) in the length direction, the first gear (4) is keyed to the rotating shaft (14), both ends of the mounting tube (1) in the through direction are connected to an annular plate (16), an inner gear ring (6) is rotatably connected between the two annular plates (16), the inner wall of the inner gear ring (6) is clearance-matched with the outer wall of the mounting tube (1), the first gear (4) is meshedly connected to the inner gear ring (6), the inner gear ring (6) is driven by a driving assembly, a bottom ring (15) is provided at one end of the mounting tube (1) in the through direction, and a limiting mechanism (13) is provided between the bottom ring (15) and the mounting tube (1).
2. The auxiliary device for detecting bored piles according to claim 1, characterized in that: The limiting mechanism (13) is arranged in a circular array, and comprises a second gear (131), a rack (132) and a guide block (133); the second gear (131) is key-connected to the rotating shaft (14); the rack (132) is symmetrically arranged on both sides of the second gear (131) in a horizontal direction and meshes with the second gear (131); the guide block (133) is symmetrically arranged on both sides of the second gear (131) in a horizontal direction; the rack (132) is slidably connected to the guide block (133).
3. The auxiliary device for detecting bored piles according to claim 2, characterized in that: A sliding rod (134) is slidably connected to the rack (132); the sliding rods (134) on the symmetrically arranged set of racks (132) are arranged back to back; one end of the sliding rod (134) away from the rack (132) is connected to an extrusion head (136); and a spring (135) is connected between the extrusion head (136) and the rack (132).
4. The auxiliary device for detecting bored piles according to claim 1, characterized in that: Rolling balls (5) are arranged in an array on the side of the mounting plate (3).
5. The auxiliary device for detecting bored piles according to claim 1, characterized in that: The drive assembly comprises a worm wheel ring (7) and a vertical plate group (8), wherein the worm wheel ring (7) is key-connected to the outer wall of the inner gear ring (6), the vertical plate group (8) is arranged in an array between two annular plates (16), a worm (10) is rotatably connected to the vertical plate group (8) in a horizontal direction, and the worm (10) is meshingly connected to the worm wheel ring (7).
6. The auxiliary device for detecting bored piles according to claim 5, characterized in that: Both ends of the worm (10) are connected to a fixing block (11), and a hexagonal nut (12) is provided inside the fixing block (11).
7. The auxiliary device for detecting bored piles according to claim 5, characterized in that: A reinforcing rib (9) is provided on a side of the vertical plate group (8) away from the fixed block (11), and the reinforcing rib (9) is connected to the annular plate (16) and the vertical plate group (8).