Slope support steel flower pipe positioning and installing tool

Abstract

This invention discloses a positioning and installation fixture for steel perforated pipes used in slope protection, relating to the field of slope protection construction technology. It includes a base and a clamping mechanism for clamping the steel perforated pipes, with a support frame mounted on the top of the base. This fixture, through a graded angle adjustment mechanism, utilizes a drive rod, rack, and spur gear to drive a fixed frame, adjustment frame, and clamping mechanism via a first rotating shaft for coarse angle adjustment. Initial positioning is achieved with a first scale and pointer. Then, through the meshing transmission of a worm gear and worm wheel, a second rotating shaft and clamping mechanism are driven for fine angle adjustment. Further calibration is performed using a second scale, achieving precise control of the steel perforated pipe installation angle. This solves the problem in existing technologies where angle control is achieved through a single angle adjustment structure, resulting in low adjustment accuracy, difficulty in achieving precise positioning, high rework rates, and impacts on project progress.

Description

Technical Field

[0001] This invention relates to the field of slope protection construction technology, specifically to a positioning and installation tool for steel perforated pipes used in slope protection. Background Technology

[0002] In slope protection engineering, steel pipe is the core load-bearing component for slope grouting and anchoring and soil reinforcement. The steel pipe is precisely inserted into the slope borehole at the designed inclination angle. This is a key process to ensure the overall support strength of the slope and prevent slope collapse and slippage. Its installation angle and positioning accuracy directly determine the construction quality and long-term safety and stability of the slope protection project.

[0003] For example, a device for grouting steel pipes in water-rich sand layers, as disclosed in Chinese announcement number CN212716669U, states in its specification that "a device for grouting steel pipes in water-rich sand layers is disclosed, comprising a base plate, a vertical plate fixedly installed on one side of the top of the base plate, a groove provided on one side of the vertical plate, rectangular grooves provided on both inner walls of the groove, a common movable column slidably connected to one inner wall of the two rectangular grooves, and an installation groove provided in the vertical plate, the installation groove communicating with the rectangular grooves."

[0004] However, the existing devices have the following shortcomings during use:

[0005] In existing technologies, the steel tube can be clamped between the rotating plate and the pressure plate under the action of the second spring. Rotating the handwheel can adjust the height of the steel tube, and pulling the internal gear ring and rotating the steel tube can adjust the angle of the steel tube. This eliminates the need for workers to manually hold the steel tube, reducing the labor intensity of workers and making it convenient to use. However, the angle control achieved through a single angle adjustment structure has low adjustment accuracy and makes it difficult to achieve precise positioning, resulting in a high rate of rework and affecting the progress of the project.

[0006] Therefore, we propose a positioning and installation tool for steel pipes used in slope protection to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a positioning and installation fixture for steel perforated pipes used in slope support. By utilizing the synergy of a drive rod, rack, and spur gear, a first rotating shaft drives a fixed frame, adjusting bracket, and clamping mechanism for coarse angle adjustment. Initial positioning is achieved with the help of a first scale and pointer. Then, through the meshing transmission of a worm gear and worm wheel, a second rotating shaft and clamping mechanism are driven for fine angle adjustment. Further calibration is performed using a second scale. Furthermore, the worm gear and worm wheel structure has self-locking characteristics, which can prevent angle deviation and achieve precise control of the steel perforated pipe installation angle, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a positioning and installation fixture for steel pipes in slope support, comprising a base and a clamping mechanism for clamping the steel pipes, wherein a support frame is provided on the top of the base and a graded angle adjustment mechanism is provided on the inner side of the support frame;

[0009] The graded angle adjustment mechanism includes two first rotating shafts rotatably connected to the inner side of the support frame. One end of one of the first rotating shafts is fixedly connected to a fixed frame, and an adjustment frame is fixedly connected between the other first rotating shaft and the fixed frame. A spur gear is fixedly sleeved on the outer surface of the other first rotating shaft. A rack meshing with the spur gear is provided on the inner side of the support frame. A drive rod for driving the rack to move up and down is rotatably connected to one side of the support frame. A first scale is provided on one side of the support frame. Two second rotating shafts are rotatably connected to the inner side of the adjustment frame. The clamping mechanism is located between the two second rotating shafts. A worm gear and a connecting frame are fixedly sleeved on the outer surface of one of the second rotating shafts. A second scale is provided on one side of the fixed frame. A pointer is fixedly connected to one side of the connecting frame and the end of one of the first rotating shafts away from the fixed frame. A worm gear meshing with the worm gear is rotatably connected to the inner side of the fixed frame.

[0010] Preferably, the top of the base is provided with a folding mechanism, the folding mechanism includes two mounting plates fixedly connected to the top of the base, a third rotating shaft is rotatably connected between the two mounting plates, and the support frame is fixedly sleeved on the outer surface of the third rotating shaft.

[0011] Preferably, a fixing frame is fixedly connected to one side of one of the mounting plates, a locking rod is provided on the inner side of the fixing frame, two locking holes are opened on one side of the support frame, and one end of the locking rod movably passes through the fixing frame and is equipped with a pull plate.

[0012] Preferably, the other end of the lever is movably inserted through one of the mounting plates and extends into one of the locking holes. A sliding plate is fixedly sleeved on the outer surface of the lever. Two sliding grooves are opened on the inner side of the fixing frame, and the sliding plate is slidably connected in the two sliding grooves.

[0013] Preferably, a return spring is fixedly connected between the slide plate and the fixing frame, and the return spring is sleeved on the outer surface of the clamp rod. A second arc-shaped groove is opened on one side of another mounting plate. One end of the third rotating shaft movably passes through the other mounting plate and is fixedly connected to a circular plate. A guide rod is fixedly connected to one side of the circular plate, and the guide rod is slidably connected in the second arc-shaped groove.

[0014] Preferably, the base is provided with a leveling mechanism at its bottom. The leveling mechanism includes three fixed cylinders fixedly connected to the bottom of the base. Three telescopic rods are slidably connected inside the three fixed cylinders. Three anti-slip pads are installed at the bottom ends of the three telescopic rods. Three second lead screws for fixing the three telescopic rods are threadedly connected to the outer surfaces of the three fixed cylinders.

[0015] Preferably, three second rotating caps are installed at one end of the three second lead screws, three limiting grooves are opened on the inner surface of the three fixed cylinders, three limiting blocks are slidably connected in the three limiting grooves, and the three limiting blocks are fixedly connected to the three telescopic rods. Two bubble levels are embedded in the top of the base.

[0016] Preferably, the inner side of the support frame is fixedly connected to two fixing plates, and a first lead screw is rotatably connected between the two fixing plates. A guide groove is provided on the inner side of the support frame, and a movable seat is slidably connected in the guide groove. The movable seat is threadedly connected to the outer surface of the first lead screw, and the rack is fixedly connected to one side of the movable seat.

[0017] Preferably, one end of the drive rod movably passes through the support frame, the smooth end of the first lead screw movably passes through one of the fixed plates, and the drive rod and one end of the first lead screw are fixedly connected to two meshing bevel gears.

[0018] Preferably, one end of one of the second rotating shafts movably passes through the adjusting frame and is rotatably connected to the fixed frame, and one end of one of the first rotating shafts movably passes through the support frame. A first arc-shaped groove is provided on one side of the fixed frame, and the connecting frame is slidably connected in the first arc-shaped groove. One end of the worm gear movably passes through the fixed frame, and two first rotating caps are installed at one end of the worm gear and the drive rod.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention, through the setting of a graded angle adjustment mechanism, utilizes the synergy of a drive rod, rack, and spur gear. A first rotating shaft drives a fixed frame, adjustment bracket, and clamping mechanism for coarse angle adjustment, achieving initial positioning with the help of a first scale and pointer. Then, through the meshing transmission of a worm gear and worm wheel, a second rotating shaft and clamping mechanism are driven for fine angle adjustment. Further calibration is achieved with the help of a second scale. Furthermore, the worm gear and worm wheel structure has self-locking characteristics, preventing angle deviation and achieving precise control of the steel pipe installation angle. The dual adjustment and scale visualization design improve positioning accuracy, effectively reducing construction rework rates and ensuring the stability of the slope support structure. This invention solves the problem in existing technologies where angle control is achieved through a single angle adjustment structure, resulting in low adjustment accuracy, difficulty in achieving precise positioning, high construction rework rates, and impact on project progress.

[0021] 2. This invention utilizes a folding mechanism, employing an mounting plate and a third rotating shaft to achieve rotatable folding of the support frame. Pulling the pull plate disengages the locking rod from the locking hole, making operation convenient and efficient. Folding reduces the overall volume of the tooling, minimizing transportation space occupation and handling difficulty. Simultaneously, a return spring drives the locking rod to automatically engage with the locking hole, and the guide rod's limiting effect within the second arc-shaped groove ensures the support frame is securely locked after unfolding, preventing shaking during construction and guaranteeing the stability of the steel pipe positioning and installation. This adapts to the transportation and storage needs of slope construction, enhancing the practicality and flexibility of the tooling.

[0022] 3. This invention, through the setting of a leveling mechanism, utilizes a fixed cylinder, telescopic rod, second lead screw, second rotating cap, limiting groove, limiting block, anti-slip pad, and bubble level in cooperation. First, rotating the second rotating cap moves the second lead screw away from the telescopic rod to release the locking limit, allowing independent adjustment of the extension length of the three telescopic rods. The levelness of the base is visually calibrated with the help of the bubble level. After leveling, tightening the second lead screw in the opposite direction can re-lock the telescopic rod. At the same time, the limiting groove and limiting block restrict the telescopic rod to slide vertically and prevent it from rotating, ensuring stable adjustment. The bottom anti-slip pad effectively increases the friction with the slope surface, preventing the tooling from slipping and shaking on inclined or uneven slopes. It can adapt to various complex slope terrain conditions and provide a stable horizontal reference for the angle positioning of steel pipes. Attached Figure Description

[0023] Figure 1 This is a perspective view of the main structure of a slope support steel perforated pipe positioning and installation fixture according to the present invention;

[0024] Figure 2 This is a three-dimensional view of the right side of a positioning and installation fixture for steel perforated pipes used in slope protection according to the present invention.

[0025] Figure 3 This is a three-dimensional structural view of the clamping mechanism in the positioning and installation fixture for steel perforated pipes for slope support according to the present invention.

[0026] Figure 4 This is a three-dimensional view of the adjusting frame structure in the positioning and installation tooling for steel perforated pipes for slope support according to the present invention;

[0027] Figure 5 This is a three-dimensional view of the connecting frame structure in the positioning and installation tooling for steel perforated pipes for slope support according to the present invention;

[0028] Figure 6 This is a three-dimensional structural view of the bubble level in the positioning and installation fixture for steel perforated pipes in slope support according to the present invention.

[0029] Figure 7 This is a three-dimensional cross-sectional view of the fixing cylinder in the positioning and installation fixture for steel perforated pipes for slope support according to the present invention.

[0030] Figure 8 for Figure 1 Enlarged 3D view of the structure at point A in the middle;

[0031] Figure 9 for Figure 2 Enlarged 3D view of the structure at point B.

[0032] In the diagram: 1. Base; 2. Clamping mechanism; 3. Support frame; 4. Graded angle adjustment mechanism; 401. First rotating shaft; 402. Fixed frame; 403. Adjusting frame; 404. Spur gear; 405. Rack; 406. Drive rod; 407. First scale; 408. Second rotating shaft; 409. Worm gear; 410. Connecting frame; 411. Second scale; 412. Pointer; 413. Worm; 414. Fixed plate; 415. First lead screw; 416. Guide groove; 417. Moving seat; 418. Bevel gear; 419. First arc groove; 420. First rotating cap; 5. Folding mechanism; 501. Mounting plate; 502. Third rotating shaft; 503. Fixing frame; 504. Locking rod; 505. Locking hole; 506. Pull plate; 507. Slide plate; 508. Slide groove; 509. Return spring; 510. Second arc groove; 511. Circular plate; 512. Guide rod; 6. Leveling mechanism; 601. Fixing cylinder; 602. Telescopic rod; 603. Anti-slip pad; 604. Second lead screw; 605. Second rotating cap; 606. Limiting groove; 607. Limiting block; 608. Bubble level. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-9 As shown, the present invention provides a technical solution: a positioning and installation fixture for steel pipes for slope support, including a base 1 and a clamping mechanism 2 for clamping the steel pipes. A support frame 3 is provided on the top of the base 1, and a graded angle adjustment mechanism 4 is provided on the inner side of the support frame 3.

[0035] The graded angle adjustment mechanism 4 includes two first rotating shafts 401 rotatably connected to the inner side of the support frame 3. One end of one first rotating shaft 401 is fixedly connected to a fixed frame 402, and an adjustment frame 403 is fixedly connected between the other first rotating shaft 401 and the fixed frame 402. A spur gear 404 is fixedly sleeved on the outer surface of the other first rotating shaft 401. A rack 405 that meshes with the spur gear 404 is provided on the inner side of the support frame 3. A drive rod 406 for driving the rack 405 to move up and down is rotatably connected to one side of the support frame 3. A first scale 407 is provided on one side of the adjusting frame 403. Two second rotating shafts 408 are rotatably connected to the inner side of the adjusting frame 403. The clamping mechanism 2 is located between the two second rotating shafts 408. A worm gear 409 and a connecting frame 410 are fixedly sleeved on the outer surface of one of the second rotating shafts 408. A second scale 411 is provided on one side of the fixing frame 402. A pointer 412 is fixedly connected to one end of the connecting frame 410 and the end of one of the first rotating shafts 401 away from the fixing frame 402. A worm gear 409 is rotatably connected to the inner side of the fixing frame 402. The worm gear 413 and clamping mechanism 2 include a rotating plate fixedly connected between two first rotating shafts 401. Four round rods are symmetrically welded to the top of the rotating plate. A pressure plate is slidably connected to the outer wall of each of the four round rods. The bottom of the pressure plate contacts the top of the rotating plate. A top plate is welded to the top of each round rod. A second spring is sleeved on the outer wall of each round rod, located between the top plate and the pressure plate. Arc-shaped grooves are provided on the sides of the rotating plate and the pressure plate that are close to each other. Multiple equally spaced arc-shaped rubber plates are fixedly installed on the inner wall of the arc-shaped grooves. By pulling the pressure plate upwards, the clamping mechanism... The plate will slide on the round rod and compress the second spring, causing the pressure plate to separate from the rotating plate. At this point, the steel tube can be passed through the gap between the pressure plate and the rotating plate. After releasing the pressure plate, the steel tube can be clamped between the rotating plate and the pressure plate under the action of the second spring. In addition, the arc-shaped rubber plates on the pressure plate and the rotating plate will contact the steel tube, increasing the friction. Since one side of the arc-shaped rubber plate is curved and the other side is flat, the friction force for pushing forward is smaller than the friction force for pulling backward, which can effectively prevent the steel tube from retreating and facilitate the forward pushing of the steel tube.

[0036] like Figure 1 and Figure 8 As shown, a folding mechanism 5 is provided on the top of the base 1. The folding mechanism 5 includes two mounting plates 501 fixedly connected to the top of the base 1. A third rotating shaft 502 is rotatably connected between the two mounting plates 501. The support frame 3 is fixedly sleeved on the outer surface of the third rotating shaft 502. Through the rotational cooperation between the two mounting plates 501 and the third rotating shaft 502, a stable foldable structural foundation is provided for the support frame 3, enabling the support frame 3 to rotate flexibly around the third rotating shaft 502. The tooling can be unfolded and stored without disassembly, simplifying the operation process, saving space for subsequent transportation and storage, and adapting to the needs of frequent relocation in slope construction scenarios.

[0037] like Figure 1 and Figure 8 As shown, a mounting plate 501 is fixedly connected to a mounting bracket 503 on one side. A locking rod 504 is provided on the inner side of the mounting bracket 503. Two locking holes 505 are opened on one side of the support frame 3. One end of the locking rod 504 is movably inserted through the mounting bracket 503 and is fitted with a pull plate 506. The mounting bracket 503, the locking rod 504, and the locking holes 505 form a precise locking structure. Pulling the pull plate 506 can quickly disengage the locking rod 504 from the locking holes 505, unlocking the rotation restriction of the support frame 3. The operation is convenient and requires no additional tools. The interlocking cooperation between the locking rod 504 and the locking holes 505 can firmly fix the extended state of the support frame 3, preventing the support frame 3 from rotating accidentally during construction and ensuring the structural stability of the steel pipe positioning installation.

[0038] like Figure 1 and Figure 8 As shown, the other end of the locking lever 504 is movably inserted through one of the mounting plates 501 and extends into one of the locking holes 505. A sliding plate 507 is fixedly sleeved on the outer surface of the locking lever 504. Two sliding grooves 508 are opened on the inner side of the fixing bracket 503, and the sliding plate 507 is slidably connected in the two sliding grooves 508. Through the sliding cooperation between the sliding plate 507 and the sliding grooves 508, the locking lever 504 is ensured to move smoothly without deviation, improving the smoothness of locking and unlocking.

[0039] like Figure 1 , Figure 6 and Figure 8 As shown, a return spring 509 is fixedly connected between the slide plate 507 and the fixed frame 503, and the return spring 509 is sleeved on the outer surface of the locking rod 504. A second arc-shaped groove 510 is opened on one side of another mounting plate 501. One end of the third rotating shaft 502 is movably inserted through the other mounting plate 501 and fixedly connected to a circular plate 511. A guide rod 512 is fixedly connected to one side of the circular plate 511, and the guide rod 512 is slidably connected in the second arc-shaped groove 510. The return spring 509 can automatically drive the locking rod 504 to reset and lock into the locking hole 505, eliminating the need for manual alignment and simplifying the operation steps. The limiting cooperation between the guide rod 512 and the second arc-shaped groove 510 can limit the rotation angle of the support frame 3, prevent excessive folding or unfolding that could cause structural damage, and enhance the stability of the rotation process.

[0040] like Figure 1 and Figure 7As shown, a leveling mechanism 6 is provided at the bottom of the base 1. The leveling mechanism 6 includes three fixed cylinders 601 fixedly connected to the bottom of the base 1. Three telescopic rods 602 are slidably connected inside the three fixed cylinders 601. Three anti-slip pads 603 are installed at the bottom ends of the three telescopic rods 602. Three second screws 604 for fixing the three telescopic rods 602 are threadedly connected to the outer surfaces of the three fixed cylinders 601. By utilizing the sliding cooperation between the three fixed cylinders 601 and the telescopic rods 602, the support height of the tooling can be flexibly adjusted to adapt to complex ground conditions with uneven slopes. The anti-slip pads 603 at the bottom ends of the telescopic rods 602 can increase the contact friction with the slope surface, effectively preventing slippage and shaking of the tooling during construction. At the same time, the second screws 604 threaded to the outer sides of the fixed cylinders 601 can tighten and lock the telescopic rods 602 after the extension length has been adjusted, keeping the support height fixed and providing a stable and reliable support foundation for the positioning and installation of steel pipes.

[0041] like Figure 1 , Figure 6 and Figure 7 As shown, three second rotating caps 605 are installed at one end of the three second lead screws 604, and three limiting grooves 606 are opened on the inner surface of the three fixed cylinders 601. Three limiting blocks 607 are slidably connected in the three limiting grooves 606, and the three limiting blocks 607 are fixedly connected to the three telescopic rods 602. Two bubble levels 608 are embedded in the top of the base 1. By setting the second rotating caps 605 at the ends of the second lead screws 604, the operating force area is increased, making it easier for the operator to rotate the second lead screws 604 to unlock and lock with less effort. The limiting grooves 606 are opened inside the fixed cylinders 601 and cooperate with the limiting blocks 607 fixed to the telescopic rods 602 to restrict the circumferential rotation of the telescopic rods 602, so that they can only extend and retract vertically and smoothly, avoiding adjustment deviation. The bubble level 608 embedded in the top of the base 1 can display the level status of the base 1 in real time, which makes it easy for the staff to quickly and accurately complete the leveling operation.

[0042] like Figure 1 and Figure 4As shown, two fixing plates 414 are fixedly connected to the inner side of the support frame 3. A first lead screw 415 is rotatably connected between the two fixing plates 414. A guide groove 416 is opened on the inner side of the support frame 3. A movable seat 417 is slidably connected in the guide groove 416. The movable seat 417 is threaded to the outer surface of the first lead screw 415. A rack 405 is fixedly connected to one side of the movable seat 417. The fixing plates 414 provide stable support and positioning for the first lead screw 415, ensuring no shaking during transmission. The threaded transmission between the first lead screw 415 and the movable seat 417 enables the rack 405 to move smoothly and linearly, thereby driving the spur gear 404 to rotate precisely, ensuring the accuracy of coarse angle adjustment. The guide groove 416 guides and limits the movable seat 417, preventing the movable seat 417 from shifting and causing poor meshing between the rack 405 and the spur gear 404, thus improving the stability and reliability of angle adjustment.

[0043] like Figure 1 , Figure 3 and Figure 4 As shown, one end of the drive rod 406 movably passes through the support frame 3, and the smooth end of the first lead screw 415 movably passes through one of the fixed plates 414. Two meshing bevel gears 418 are fixedly connected to one end of the drive rod 406 and the first lead screw 415. The power steering transmission between the drive rod 406 and the first lead screw 415 is realized through the bevel gears 418, so that the operator can rotate the drive rod 406 from the side of the support frame 3 without having to operate directly in front of the lead screw.

[0044] like Figure 3 , Figure 4 and Figure 5 As shown, one end of a second rotating shaft 408 is movably inserted through an adjusting frame 403 and rotatably connected to a fixed frame 402. One end of a first rotating shaft 401 is movably inserted through a support frame 3. A first arc-shaped groove 419 is provided on one side of the fixed frame 402. A connecting frame 410 is slidably connected within the first arc-shaped groove 419. One end of a worm gear 413 is movably inserted through the fixed frame 402. Two first rotating caps 420 are installed at one end of the worm gear 413 and the drive rod 406. The first arc-shaped groove 419 limits the rotation range of the connecting frame 410, preventing excessive angle adjustment from causing installation deviation of the steel tube, and providing a stable movement trajectory for the pointer 412. The first rotating caps 420 facilitate precise control of the worm gear 413 rotation by the operator, thereby driving the worm wheel 409 to drive the second rotating shaft 408 to fine-tune the angle, improving the convenience and accuracy of fine adjustment.

[0045] The usage and working principle of this device: During the tooling placement and leveling stage, the tooling is transported as a whole to the slope support construction point. First, rotate the second rotating cap 605 on the leveling mechanism 6 to drive the second lead screw 604 to rotate backward and move away from the telescopic rod 602, releasing the top-tightening and fixing limit on the telescopic rod 602. Then, manually adjust the extension height of the telescopic rod 602 inside the three fixed cylinders 601 respectively. With the help of the bubble level 608 embedded in the top of the base 1, observe the levelness and fine-tune until the base 1 is in a level state. Then, rotate the second rotating cap 605 in the opposite direction to drive the second lead screw 604 to move forward and tighten the telescopic rod 602, locking and fixing the telescopic rod 602. The anti-slip pad 603 at the bottom of the telescopic rod 602 is in contact with the slope ground. The limiting groove 606 and the limiting block 607 cooperate to limit the telescopic rod 602 from rotating and shifting, completing the stable and secure placement of the tooling.

[0046] During the frame unfolding and locking phase, pulling the pull plate 506 causes the locking rod 504 to move outward, compressing the return spring 509 to make the locking rod 504 exit the locking hole 505, rotating the support frame 3 so that it flips and unfolds around the third rotating shaft 502 between the mounting plates 501, and the guide rod 512 on the circular plate 511 slides and is limited along the second arc groove 510. After flipping and unfolding, the pull plate 506 is released, the return spring 509 pushes the slide plate 507 to reset, and the locking rod 504 automatically engages into the corresponding locking hole 505, locking the support frame 3 in the unfolded working state;

[0047] During the steel pipe clamping and fixing stage, the steel pipe to be installed is placed inside the clamping mechanism 2, and the clamping mechanism 2 is used to clamp and fix the steel pipe to ensure that the steel pipe and the second rotating shaft 408 rotate synchronously.

[0048] In the coarse angle adjustment and positioning stage, the first rotating cap 420 at the end of the drive rod 406 is rotated, which drives the first lead screw 415 to rotate through the meshing bevel gear 418. The first lead screw 415 drives the movable seat 417 in the guide groove 416 to slide vertically, which drives the rack 405 to rise and fall synchronously. The rack 405 meshes with and drives the spur gear 404 to rotate, which in turn drives the first rotating shaft 401, the fixed frame 402 and the adjustment frame 403 to deflect as a whole. Referring to the first scale 407 and pointer 412 on the side wall of the support frame 3, the coarse adjustment of the steel flower tube installation angle is completed.

[0049] In the fine-tuning stage, the first rotating cap 420 at the end of the worm 413 is rotated, and the worm 413 engages and drives the worm wheel 409 to decelerate and rotate, which drives the second rotating shaft 408, the connecting frame 410 and the clamping mechanism 2 to deflect slightly in sync. The connecting frame 410 slides and is limited along the first arc groove 419, and is precisely aligned with the second scale 411 and pointer 412 on the fixed frame 402 to complete the fine-tuning of the steel pipe angle. Utilizing the self-locking characteristics of the worm wheel 409 and the worm 413, the current angle is automatically locked and will not deviate on its own. Then, a pneumatic pick can be used to drive the steel pipe into the grouting hole of the segment at the pre-designed angle.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning and installation fixture for steel perforated pipes used in slope protection, comprising a base (1) and a clamping mechanism (2) for clamping the steel perforated pipes, characterized in that: The base (1) is provided with a support frame (3) on its top, and the support frame (3) is provided with a graded angle adjustment mechanism (4) on its inner side. The graded angle adjustment mechanism (4) includes two first rotating shafts (401) rotatably connected to the inner side of the support frame (3). One end of one of the first rotating shafts (401) is fixedly connected to a fixed frame (402), and an adjustment frame (403) is fixedly connected between the other first rotating shaft (401) and the fixed frame (402). A spur gear (404) is fixedly sleeved on the outer surface of the other first rotating shaft (401). A rack (405) meshing with the spur gear (404) is provided on the inner side of the support frame (3). A drive rod (406) for driving the rack (405) to move up and down is rotatably connected to one side of the support frame (3). A first scale (407) is provided on one side. Two second rotating shafts (408) are rotatably connected to the inner side of the adjusting frame (403). The clamping mechanism (2) is located between the two second rotating shafts (408). A worm gear (409) and a connecting frame (410) are fixedly sleeved on the outer surface of one of the second rotating shafts (408). A second scale (411) is provided on one side of the fixed frame (402). A pointer (412) is fixedly connected to one side of the connecting frame (410) and one end of the first rotating shaft (401) away from the fixed frame (402). A worm (413) that meshes with the worm gear (409) is rotatably connected to the inner side of the fixed frame (402).

2. The positioning and installation fixture for steel perforated pipes for slope support according to claim 1, characterized in that: The base (1) is provided with a folding mechanism (5) at its top. The folding mechanism (5) includes two mounting plates (501) fixedly connected to the top of the base (1). A third rotating shaft (502) is rotatably connected between the two mounting plates (501). The support frame (3) is fixedly sleeved on the outer surface of the third rotating shaft (502).

3. The positioning and installation fixture for steel perforated pipes for slope support according to claim 2, characterized in that: One of the mounting plates (501) is fixedly connected to a fixing frame (503) on one side. A locking rod (504) is provided on the inner side of the fixing frame (503). Two locking holes (505) are opened on one side of the support frame (3). One end of the locking rod (504) is movably inserted through the fixing frame (503) and is equipped with a pull plate (506).

4. The slope support steel perforated pipe positioning and installation fixture according to claim 3, characterized in that: The other end of the lever (504) is movably inserted through one of the mounting plates (501) and extends into one of the locking holes (505). A sliding plate (507) is fixedly sleeved on the outer surface of the lever (504). Two sliding grooves (508) are opened on the inner side of the fixing frame (503), and the sliding plate (507) is slidably connected in the two sliding grooves (508).

5. The positioning and installation fixture for steel perforated pipes for slope support according to claim 4, characterized in that: A return spring (509) is fixedly connected between the slide plate (507) and the fixing frame (503), and the return spring (509) is sleeved on the outer surface of the clamping rod (504). A second arc-shaped groove (510) is opened on one side of another mounting plate (501). One end of the third rotating shaft (502) is movably inserted through another mounting plate (501) and fixedly connected to a circular plate (511). A guide rod (512) is fixedly connected to one side of the circular plate (511), and the guide rod (512) is slidably connected in the second arc-shaped groove (510).

6. The positioning and installation fixture for steel perforated pipes for slope support according to claim 1, characterized in that: The base (1) is provided with a leveling mechanism (6) at its bottom. The leveling mechanism (6) includes three fixed cylinders (601) fixedly connected to the bottom of the base (1). Three telescopic rods (602) are slidably connected inside the three fixed cylinders (601). Three anti-slip pads (603) are installed at the bottom of the three telescopic rods (602). Three second screws (604) for fixing the three telescopic rods (602) are threadedly connected to the outer surface of the three fixed cylinders (601).

7. The positioning and installation fixture for steel perforated pipes for slope support according to claim 6, characterized in that: Three second rotating caps (605) are installed at one end of the three second lead screws (604), three limiting grooves (606) are opened on the inner surface of the three fixed cylinders (601), three limiting blocks (607) are slidably connected in the three limiting grooves (606), and the three limiting blocks (607) are fixedly connected to the three telescopic rods (602). Two bubble levels (608) are embedded in the top of the base (1).

8. The positioning and installation fixture for steel perforated pipes for slope support according to claim 1, characterized in that: The inner side of the support frame (3) is fixedly connected to two fixing plates (414), and a first lead screw (415) is rotatably connected between the two fixing plates (414). A guide groove (416) is provided on the inner side of the support frame (3). A movable seat (417) is slidably connected in the guide groove (416), and the movable seat (417) is threaded to the outer surface of the first lead screw (415). The rack (405) is fixedly connected to one side of the movable seat (417).

9. The positioning and installation fixture for steel perforated pipes for slope support according to claim 8, characterized in that: One end of the drive rod (406) movably passes through the support frame (3), and the smooth end of the first lead screw (415) movably passes through one of the fixed plates (414). The drive rod (406) and one end of the first lead screw (415) are fixedly connected to two meshing bevel gears (418).

10. The positioning and installation fixture for steel perforated pipes for slope support according to claim 1, characterized in that: One end of one of the second rotating shafts (408) is movably inserted through the adjusting frame (403) and rotatably connected to the fixed frame (402). One end of one of the first rotating shafts (401) is movably inserted through the support frame (3). A first arc-shaped groove (419) is provided on one side of the fixed frame (402). The connecting frame (410) is slidably connected in the first arc-shaped groove (419). One end of the worm (413) is movably inserted through the fixed frame (402). Two first rotating caps (420) are installed at one end of the worm (413) and the drive rod (406).

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