A pre-embedded device for positioning prestressed anchor bolts and its application method

Abstract

This invention discloses a prestressed anchor bolt positioning and pre-embedding device and its usage method, belonging to the field of prestressed anchor bolt construction technology. It includes two fixed bases, each with two ground anchors. Side support plates are fixedly installed on the upper surface of each fixed base, and a rotating shaft is rotatably installed between the two side support plates. The fixed bases and ground anchors work together to fix the entire device on a horizontal plane. The rotating shaft, in conjunction with a turntable and locking housing, allows for adaptive adjustment of the orientation angles of the middle, top, and bottom construction frames according to the inclination of the construction surface of the anchor bolt hole. A sprocket and chain, in conjunction with a sliding plate and a tightening wheel, can center and clamp the anchor bolt, ensuring good stability when the anchor bolt is inserted into the pre-embedded hole, preventing shaking, displacement, or misalignment. This also ensures uniform thickness of the concrete slurry outside the anchor bolt during grouting after installation, guaranteeing good anchor bolt pre-tightening force.

Description

Technical Field

[0001] This invention belongs to the field of prestressed anchor construction technology, specifically relating to a prestressed anchor positioning and construction pre-embedded device and its usage method. Background Technology

[0002] Prestressed anchor bolts consist of an anchor head, a bolt body, and a bearing plate. The anchoring force generated by the anchor head applies a certain prestress to the surrounding rock, actively reinforcing it. Depending on the anchoring method or material, commonly used prestressed anchor bolts include mechanically expanded shell prestressed anchor bolts, resin prestressed anchor bolts, and cement-coated prestressed anchor bolts. The stress actively applied to the surrounding rock during installation by the installation machinery is called the prestress of the anchor bolt support. Anchor bolts capable of applying prestress are called prestressed anchor bolts. The prestress of the anchor bolt support is formed by the tension of the anchor bolt body acting on the rock mass in the anchoring area through the bearing plate and the anchoring end. The axial tensile force borne by the anchor bolt body at this time is the anchor bolt preload.

[0003] During the prestressed anchor bolt positioning construction, the bolt is directly pushed into the pre-embedded hole using an anchor bolt pushing device. Then, concrete is injected into the pre-embedded hole outside the anchor bolt and vibrated to make the concrete dense, thereby ensuring the normal prestress tension of the anchor bolt. However, there is a lack of auxiliary devices for positioning the prestressed anchor bolt when it is pushed into the pre-embedded hole. Therefore, the prestressed anchor bolt is prone to shaking and misalignment during the pushing process, and even centrifugal phenomenon may occur between it and the pre-embedded hole. This will lead to the problem of uneven concrete thickness between the outside of the anchor bolt and the inner wall of the pre-embedded hole after the anchor bolt is pre-embedded, which will cause the prestressed anchor bolt tension balance to fail. Summary of the Invention

[0004] The purpose of this invention is to provide a prestressed anchor bolt positioning and pre-embedding device and its usage method, to solve the problem mentioned in the background art where the anchor bolt lacks a positioning auxiliary device when being pushed into the anchor bolt pre-embedding hole. As a result, the prestressed anchor bolt is prone to shaking and misalignment during the pushing process, and even centrifugal phenomenon may occur between the pre-embedding hole and the anchor bolt. This leads to the problem of uneven concrete thickness between the outside of the anchor bolt and the inner wall of the pre-embedding hole when concrete is injected after the anchor bolt is pre-embedded, which in turn leads to the failure of the anchor bolt pre-tightening force tension balance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prestressed anchor bolt positioning and pre-embedded device, comprising two fixed bases, two ground nails passing through the fixed bases, side support plates fixedly installed on the upper surface of the fixed bases, a rotating shaft rotatably installed between the two side support plates, a central construction frame fixedly installed between the two rotating shafts, a top construction frame fixedly installed on the upper surface of the central construction frame, a bottom construction frame movably installed on the lower surface of the central construction frame, a turntable fixedly installed at the end of one of the rotating shafts, a plurality of locking grooves formed on the outer surface of the turntable, a locking shell fixedly installed on the side of the side support plate on the same side as the turntable, a sliding plate slidably installed inside the locking shell, a locking rod fixedly installed on the upper surface of the sliding plate, the locking rod slidably extending through the locking shell and cooperating with the locking grooves, an operating channel formed on the side of the locking shell, and an operating handle fixedly installed on the side of the sliding plate within the operating channel. Mounting seats are installed at the four corners of the top construction frame. A sprocket is rotatably mounted inside each mounting seat. A knob is fixedly mounted at the end of one of the sprockets. A chain connects the four sprockets. Sliding plates are slidably mounted on the front, rear, left, and right sides of the top construction frame. A support roller is rotatably mounted on the upper surface of each sliding plate. Support plates are fixedly mounted on the front, rear, left, and right sides of the upper surface of each sprocket. Inclined slide tracks are provided on the support plates. The support rollers roll and fit against the inner wall of the inclined slide tracks at corresponding positions. A wheel seat is fixedly mounted on the end of each sliding plate facing inwards from the top construction frame. A tightening wheel is rotatably mounted inside the wheel seat. A fixing base is fixedly mounted on the outer surface of the bottom construction frame. Several ground nails are driven through the fixing base. Eight sliding plates are slidably mounted inside the bottom construction frame. Tightening plates are fixedly mounted between four sliding plates on the same side, with two tightening plates arranged opposite each other.

[0006] Using the above scheme, the entire device can be fixed on a horizontal plane by setting a fixed base and a ground nail. The rotating shaft, turntable, and locking shell can be used to adaptively adjust the orientation angles of the middle, top, and bottom construction frames according to the inclination of the construction surface of the anchor bolt hole. The sprocket and chain, along with the sliding plate and tightening wheel, can center and clamp the anchor bolt, ensuring good stability when the anchor bolt is inserted into the pre-embedded hole and preventing shaking, displacement, or misalignment. This ensures uniform thickness of the concrete grout outside the anchor bolt during grouting after installation, thus guaranteeing good anchor bolt pre-tightening force. The adjusting shell and adjusting plate can be used to adaptively adjust the position of the bottom construction frame, allowing the tightening plate to be inserted into the anchor bolt hole. The double-acting screw ensures the tightening plate is firmly pressed against the end of the anchor bolt hole, preventing collapse and improving operational stability.

[0007] In the above scheme, it should be noted that both motor one and motor two are electrically connected to an external power supply.

[0008] In a preferred embodiment, a plurality of guide blocks are fixedly installed on the side of the sliding plate, and a plurality of guide rods are fixedly installed inside the locking housing. The guide blocks are slidably installed on the outer surface of the guide rods at the same side position. A spring is fixedly installed between the guide blocks and the inner wall of the locking housing. Two insertion holes are provided on the locking housing, one of which is used to insert a pin. A slot for inserting the pin is provided on the side of the sliding plate.

[0009] Using the above scheme, when the guide block and guide rod work together with the spring, the sliding plate slides and the guide block slides on the surface of the guide rod. Therefore, the guide rod and guide block work together to provide a supporting and guiding effect, making the sliding plate slide smoothly and preventing tilting or wobbling. When the sliding plate moves downward and drives the locking rod out of the locking groove, the spring deforms. Therefore, the reverse force of the spring can quickly reset the locking rod, improving the ease of operation. The pin, when used in conjunction, can achieve lateral limitation of the sliding plate, preventing accidental movement and improving the stability of the use.

[0010] In a preferred embodiment, limiting slide plates are fixedly installed on the front and rear sides and the left and right sides of the top construction frame, and limiting grooves are opened on the side of the support plate. The limiting slide plates are slidably installed on the inner wall of the limiting grooves at the corresponding positions.

[0011] By using the above solution, the horizontal movement of the support plate can be limited and supported by the sliding of the limiting slide plate in the limiting groove, thereby improving the stability of the movement and preventing swaying.

[0012] In a preferred embodiment, two limiting rings are fixedly installed on the outer surface of the support roller, and the two limiting rings are respectively attached to the upper and lower sides of the support plate.

[0013] Using the above solution, the limiting ring acts as a limit to prevent the support roller from detaching from the inclined slide on the support plate.

[0014] In a preferred embodiment, a guide block is fixedly mounted on the side of the sliding plate two, and a guide rod is slidably mounted on it. The guide rod is fixedly mounted on the side of the top construction frame, and a spring is fixedly mounted between the guide block two and the top construction frame.

[0015] Using the above scheme, the guide rod 2 and the guide block 2 work together to support and guide the horizontal movement of the sliding plate 2, improving the smoothness of the movement. The spring 2 can play a reset role. When the sliding plate 2 drives the wheel seat and the top clamping wheel to move inward, the spring 2 deforms. Therefore, when the fixing bolt is unscrewed, the elastic force of the spring 2 can be used to drive the top clamping wheel to move outward quickly to reset, improving the convenience of operation and use.

[0016] In a preferred embodiment, a fixing bolt is threaded onto the knob, and a plurality of fixing thread grooves are formed on the surface of the mounting base on the same side as the knob, and the fixing bolt is used in conjunction with the fixing thread grooves.

[0017] Using the above solution, the fixing bolts are used in conjunction with the fixing threaded grooves to lock the position of the knob after it has been rotated, thereby locking the sprocket, and then locking the position of the chain and the support plate. The locking structure is simple and easy to operate.

[0018] In a preferred embodiment, an adjusting shell is fixedly installed on the side of the central construction frame. A threaded rod is rotatably installed inside the adjusting shell. A motor is fixedly installed on the surface of the adjusting shell. The output shaft of the motor is fixedly connected to the threaded rod. A threaded plate is threadedly installed on the outer surface of the threaded rod. A connecting block is fixedly installed on the side of the threaded plate. The connecting block extends out of the adjusting shell through a strip-shaped channel opened on the side of the adjusting shell and is fixedly installed with an adjusting plate. The bottom end of the adjusting plate is fixedly installed on the side of the bottom construction frame. Several limiting rods are fixedly installed inside the adjusting shell. The threaded plate is slidably installed on the outer surface of the limiting rods.

[0019] Using the above scheme, the threaded rod inside the adjusting shell is used in conjunction with the motor. When the motor is working, it drives the threaded rod to rotate, which in turn drives the threaded plate to move up and down. This, in turn, drives the adjusting plate to move up and down through the connecting block, thereby adjusting the position of the bottom construction frame. The limiting rod also provides support and limiting for the threaded plate, preventing centrifugal swaying during its movement.

[0020] In a preferred embodiment, a plurality of guide blocks are fixedly installed on the side of the middle construction frame, and a plurality of guide rods are fixedly installed on the side of the bottom construction frame. The guide rods are slidably installed on the guide blocks at corresponding positions.

[0021] By using the above scheme, guide block three in conjunction with guide rod three can support the up-and-down movement of the bottom construction frame, so that the bottom construction frame has good stability when moving up and down and is not prone to tilting or swaying.

[0022] In a preferred embodiment, the side of the bottom construction frame is provided with several sliding channels, and a limit rod 2 is fixedly installed in the sliding channel. The sliding plate 3 passes through the sliding channel and is slidably installed on the outer surface of the limit rod 2. Two assembly blocks are fixedly installed on the side of the bottom construction frame. A motor 2 is fixedly installed on the side of one of the assembly blocks. A bidirectional lead screw is rotatably installed between the two assembly blocks. The output shaft of the motor 2 is fixedly connected to the bidirectional lead screw. Threaded plates 2 are threadedly installed on the outer surfaces of the two threads of the bidirectional lead screw. The threaded plates 2 are fixedly installed at the ends of the sliding plates 2 at corresponding positions.

[0023] Using the above scheme, the motor drives the bidirectional lead screw to rotate, which in turn drives the two threaded plates to move relative to each other. This, in turn, drives the two clamping plates to move relative to each other through the sliding plate. The setting of the limit rod can provide a support effect for the movement of the threaded plates, so that the threaded plates have good movement stability during movement.

[0024] A method for using a prestressed anchor bolt positioning and pre-embedded device includes the following steps:

[0025] S1. Place the fixed base on a horizontal surface and drive the ground nails through the fixed base and into the horizontal surface.

[0026] S2. Drive the operating handle downwards and pull out the pin. At this time, the sliding plate is unlocked. The operating handle drives the sliding plate to move downwards. The sliding plate drives the locking rod downwards to disengage from the locking groove on the turntable. Then, the pin passes through the insertion hole at the lower position and is inserted into the slot on the sliding plate. When the sliding plate moves downwards, it will drive the guide block to slide on the surface of the guide rod. At this time, the spring deforms and the turntable is unlocked. Rotate the turntable to drive the middle construction frame to rotate through the rotating shaft. Adjust the inclination of the middle construction frame, bottom construction frame and top construction frame according to the inclination angle of the anchor bolt construction inclination surface. Adjust until the middle construction frame, bottom construction frame and top construction frame are exactly perpendicular to the anchor bolt construction inclination surface. Then pull out the pin. At this time, the sliding plate will move upwards to reset under the action of the spring, and then drive the locking rod to move and insert into the locking groove to lock the turntable. Then, the pin passes through the insertion hole at the upper position and is inserted into the slot on the sliding plate to lock the sliding plate.

[0027] S3. Start motor one to drive the threaded rod to rotate, which in turn drives threaded plate one to move the connecting block, thereby driving the bottom construction frame to move towards the anchor construction surface. When the fixed base two on the bottom construction frame is in contact with the anchor construction surface, stop motor one. Then, drive ground nail two through fixed base two into the anchor construction surface. At this time, the two top clamping plates will enter the anchor pre-embedded hole. Then start motor two, which will drive the bidirectional screw to rotate, thereby driving the threaded plates two on both sides to move away from each other. This will drive the two top clamping plates to move away from each other through sliding plate three. When the top clamping plate touches the inner wall of the anchor pre-embedded hole, stop motor two. At this time, the end of the anchor pre-embedded hole is tightened to prevent collapse.

[0028] S4. Pass the anchor rod through the top construction frame, middle construction frame and bottom construction frame in sequence, then unscrew the bolts, turn the knob, and drive the support plate to move through the transmission of the sprocket and chain. Use the inclined slide rail in conjunction with the support roller to make the four sliding plates move inward synchronously, and then drive the top tightening wheel to move inward to contact the anchor rod surface through the wheel seat, so as to realize the centering of the anchor rod. Then screw in the fixing bolt to lock the position, and then start the anchor rod pre-embedding pushing device so that the anchor rod can enter the pre-embedding hole.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. Precise Positioning and Stable Insertion: In existing technologies, anchor bolts lack effective positioning aids when pushed into pre-embedded holes, making them prone to shaking, misalignment, and even centrifugal force during the insertion process. This invention, through the careful design of a fixed base and ground anchors, can stably fix the entire device to a horizontal plane. Simultaneously, by cleverly utilizing the coordinated operation of the rotating shaft, turntable, and locking housing, the orientation angles of the middle, top, and bottom construction frames can be flexibly and precisely adjusted according to the inclination of the anchor bolt hole construction surface. Furthermore, the sprocket and chain, in conjunction with the sliding plate and tightening wheel, can precisely center and clamp the anchor bolt. As a result, the anchor bolt exhibits excellent stability when inserted into the pre-embedded hole, effectively avoiding shaking, offset, and misalignment, and greatly improving construction accuracy. In actual slope anchoring projects, traditional construction methods often result in uneven grouting due to anchor rod positioning deviations, affecting the anchoring effect. However, this invention can ensure precise anchor rod positioning, guaranteeing that the thickness of the external concrete grout is uniform during grouting after anchor rod insertion. This provides a solid guarantee for good anchor rod pre-tightening force and significantly improves project quality.

[0031] 2. Prevention of Anchor Hole End Collapse: Anchor hole end collapse is a common and challenging problem during anchor bolt construction, often proving difficult to solve effectively with existing technologies. This invention innovatively incorporates an adjusting shell and adjusting plate. Their close cooperation allows for precise and adaptive adjustment of the bottom construction frame position, ensuring the top clamping plate smoothly inserts into the anchor hole. Simultaneously, the coordinated operation of the bidirectional lead screw and motor ensures the top clamping plate is firmly pressed against the end of the anchor hole. This design fundamentally avoids anchor hole end collapse, significantly improving stability during operation and providing strong support for smooth construction. The advantages of this design are particularly evident in anchor bolt construction in areas with complex geological conditions, effectively reducing construction interruptions and safety hazards caused by hole wall collapse, and improving construction efficiency.

[0032] 3. Improved Component Movement Stability and Ease of Operation: The design of several key components significantly enhances the stability of component movement and ease of operation. For example, a guide block is installed on the side of sliding plate one, and a guide rod is installed inside the locking housing, along with a spring, ensuring smooth and stable sliding of sliding plate one and effectively preventing tilting and wobbling. Simultaneously, the counterforce of spring one allows the locking rod to quickly reset, while the pin reliably limits the lateral movement of sliding plate one, preventing accidental movement and significantly improving operational convenience and stability of performance. The limiting slide plate of the top construction frame and the limiting groove of the support plate work together to effectively improve the stability of the support plate's horizontal movement; the limiting ring on the outer surface of the support roller prevents it from disengaging from the inclined slide, ensuring reliable movement. The guide block two, guide rod two, and spring two of sliding plate two cooperate to not only provide good support and guidance for the horizontal movement of sliding plate two, but also allow the spring force of spring two to quickly reset the tightening wheel when the fixing bolt is loosened, further improving operational convenience. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0035] Figure 3 This is a structural schematic diagram of the locking shell cross-section and the turntable cross-section of the present invention;

[0036] Figure 4 This is a structural schematic diagram of the middle construction frame, top construction frame, and bottom construction frame of the present invention;

[0037] Figure 5 This is a schematic diagram of the top construction frame of the present invention;

[0038] Figure 6This is a schematic diagram of the exploded structure of the fixing bolt and mounting base of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of the sliding plate 2 and the support plate of the present invention;

[0040] Figure 8 This is a structural schematic diagram of the cross-section of the adjusting shell and the adjusting plate of the present invention;

[0041] Figure 9 This is a schematic diagram of the structure of the regulating shell of the present invention;

[0042] Figure 10 This is a schematic diagram of the bottom construction frame of the present invention.

[0043] In the diagram: 1. Fixed base one; 2. Ground nail one; 3. Side support plate; 4. Rotating shaft; 5. Middle construction frame; 6. Top construction frame; 7. Bottom construction frame; 8. Turntable; 9. Locking housing; 10. Sliding plate one; 11. Locking rod; 12. Mounting seat; 13. Sprocket; 14. Knob; 15. Chain; 16. Support plate; 17. Sliding plate two; 18. Support roller; 19. Wheel seat; 20. Tightening wheel; 21. Fixed base two; 22. Ground nail two; 23. Sliding plate three; 24. Tightening plate; 2 5. Guide block one; 26. Guide rod one; 27. Spring one; 28. Pin; 29. ​​Limiting slide plate; 30. Limiting ring; 31. Guide block two; 32. Guide rod two; 33. Spring two; 34. Fixing bolt; 35. Adjusting shell; 36. Motor one; 37. Threaded rod; 38. Threaded plate one; 39. Connecting block; 40. Adjusting plate; 41. Limiting rod one; 42. Guide block three; 43. Guide rod three; 44. Limiting rod two; 45. Assembly block; 46. Motor two; 47. Bidirectional lead screw; 48. Threaded plate two. Detailed Implementation

[0044] Please see Figures 1-10This invention provides a prestressed anchor bolt positioning and pre-embedding device, comprising two fixed bases 1, two ground nails 2 passing through the fixed bases 1, side support plates 3 fixedly installed on the upper surface of the fixed bases 1, rotating shafts 4 rotatably installed between the two side support plates 3, a central construction frame 5 fixedly installed between the two rotating shafts 4, a top construction frame 6 fixedly installed on the upper surface of the central construction frame 5, and a bottom construction frame 7 movably installed on the lower surface of the central construction frame 5. A turntable 8 is fixedly installed at the end of one of the rotating shafts 4, and a plurality of locking grooves are formed on the outer surface of the turntable 8. A locking shell 9 is fixedly installed on the side of the side support plate 3 on the same side as the turntable 8. A sliding plate 10 is slidably installed inside the locking shell 9, and a locking rod 11 is fixedly installed on the upper surface of the sliding plate 10. The locking rod 11 slidably extends through the locking shell 9 and cooperates with the locking grooves. An operating channel is formed on the side of the locking shell 9, and an operating handle located in the operating channel is fixedly installed on the side of the sliding plate 10. A lock is installed at each of the four corners of the top construction frame 6. There is a mounting base 12, and a sprocket 13 is rotatably mounted inside the mounting base 12. A knob 14 is fixedly mounted at the end of one of the sprockets 13. A chain 15 is connected between the four sprockets 13. Sliding plates 17 are slidably mounted on the front, back, left, and right sides of the top construction frame 6. Support rollers 18 are rotatably mounted on the upper surface of the sliding plates 17. Support plates 16 are fixedly mounted on the front, back, left, and right sides of the upper surface of the sprockets 13. Inclined slide tracks are opened on the support plates 16, and the support rollers 18 roll against the track. The inner wall of the inclined slide is arranged at the corresponding position. The end of the sliding plate 2 17 facing the inside of the top construction frame 6 is fixedly installed with a wheel seat 19. The wheel seat 19 is rotatably installed with a top clamping wheel 20. The outer surface of the bottom construction frame 7 is fixedly installed with a fixed base 21. Several ground nails 22 are inserted through the fixed base 21. Eight sliding plates 3 23 are slidably installed inside the bottom construction frame 7. A top clamping plate 24 is fixedly installed between four sliding plates 3 23 on the same side. The two top clamping plates 24 are arranged opposite each other.

[0045] By using a fixed base 1 and a ground nail 2, the entire device can be fixed on a horizontal plane. The rotating shaft 4, in conjunction with the turntable 8 and locking shell 9, allows for adaptive adjustment of the orientation angles of the middle construction frame 5, top construction frame 6, and bottom construction frame 7 according to the inclination of the construction surface of the anchor bolt hole. The sprocket 13 and chain 15, in conjunction with the sliding plate 17 and the tightening wheel 20, can center and clamp the anchor bolt, ensuring good stability when the anchor bolt is inserted into the pre-embedded hole and preventing shaking, displacement, or misalignment. This ensures uniform thickness of the concrete grout outside the anchor bolt during grouting after installation, thus guaranteeing good anchor bolt pre-tightening force. The adjusting shell 35 and adjusting plate 40 allow for adaptive adjustment of the position of the bottom construction frame 7, enabling the tightening plate 24 to be inserted into the anchor bolt hole. The double-acting screw 47 further ensures that the tightening plate 24 is firmly pressed against the end of the anchor bolt hole, preventing collapse and improving operational stability.

[0046] Several guide blocks 25 are fixedly installed on the side of the sliding plate 10, and several guide rods 26 are fixedly installed inside the locking housing 9. The guide blocks 25 are slidably mounted on the outer surface of the guide rods 26 at the same position on the same side. A spring 27 is fixedly installed between the guide blocks 25 and the inner wall of the locking housing 9. The locking housing 9 has two insertion holes, one of which is fitted with a pin 28. The side of the sliding plate 10 has a slot for the pin 28 to be inserted. When the guide blocks 25 and guide rods 26 cooperate with the spring 27, the sliding plate 10 will slide and drive the guide blocks 25 and guide rods 26. 25 slides on the surface of guide rod 26, so guide rod 26 and guide block 25 provide a supporting and guiding effect, making the sliding plate 10 slide smoothly and not prone to tilting or shaking. When the sliding plate 10 moves downward and drives the locking rod 11 to disengage from the locking groove, the spring 27 will deform. Therefore, the reverse force of the spring 27 can achieve a quick reset effect of the locking rod 11, improving the convenience of operation. The pin 28 can be used in conjunction to achieve lateral limit of the sliding plate, prevent accidental movement, and improve the stability of the use effect.

[0047] Limiting slide plates 29 are fixedly installed on the front and rear sides and the left and right sides of the top construction frame 6. Limiting grooves are opened on the side of the support plate 16. The limiting slide plates 29 are slidably installed on the inner wall of the limiting grooves at the corresponding positions. By using the limiting slide plates 29 to slide in the limiting grooves, the horizontal movement of the support plate 16 can be limited and supported, improving the stability of the movement and preventing swaying.

[0048] Two limiting rings 30 are fixedly installed on the outer surface of the support roller 18. The two limiting rings 30 are respectively attached to the upper and lower sides of the support plate 16. The limiting rings 30 play a limiting role to prevent the support roller 18 from falling off the inclined slide on the support plate 16.

[0049] A guide block 31 is fixedly installed on the side of the sliding plate 17, and a guide rod 32 is slidably installed on it. The guide rod 32 is fixedly installed on the side of the top construction frame 6. A spring 33 is fixedly installed between the guide block 31 and the top construction frame 6. The guide rod 32 and the guide block 31 work together to support and guide the horizontal movement of the sliding plate 17, improving the stability of the movement. The spring 33 can play a reset role. When the sliding plate 17 drives the wheel seat 19 and the top clamping wheel 20 to move inward, the spring 33 deforms. Therefore, when the fixing bolt 34 is unscrewed, the elastic force of the spring 33 can be used to drive the top clamping wheel 20 to move outward quickly to reset, improving the convenience of operation.

[0050] A fixing bolt 34 is threaded onto the knob 14. Several fixing thread grooves are opened on the surface of the mounting base 12 on the same side as the knob 14. The fixing bolt 34 is used in conjunction with the fixing thread grooves. The fixing bolt 34 can lock the position of the knob 14 after it has been rotated, thereby locking the sprocket 13, and then locking the position of the chain 15 and the support plate 16. The locking structure is simple and easy to operate.

[0051] An adjusting shell 35 is fixedly installed on the side of the middle construction frame 5. A threaded rod 37 is rotatably installed inside the adjusting shell 35. A motor 36 is fixedly installed on the surface of the adjusting shell 35. The output shaft of the motor 36 is fixedly connected to the threaded rod 37. A threaded plate 38 is threadedly installed on the outer surface of the threaded rod 37. A connecting block 39 is fixedly installed on the side of the threaded plate 38. The connecting block 39 extends out of the adjusting shell 35 through a strip-shaped channel on the side of the adjusting shell 35 and is fixedly installed with an adjusting plate 40. The bottom end of the adjusting plate 40 is fixedly installed on the side of the bottom construction frame 7. Several limiting rods 41 are fixedly installed inside the housing 35. The threaded plate 38 is slidably installed on the outer surface of the limiting rods 41. The threaded rod 37 inside the adjusting housing 35 is used in conjunction with the motor 36. When the motor 36 is working, it drives the threaded rod 37 to rotate, which in turn drives the threaded plate 38 to move up and down. This drives the adjusting plate 40 to move up and down through the connecting block 39, thereby adjusting the position of the bottom construction frame 7. The limiting rods 41 provide support and limit the threaded plate 38, preventing centrifugal swaying when the threaded plate 38 moves.

[0052] Several guide blocks 3 42 are fixedly installed on the side of the middle construction frame 5, and several guide rods 3 43 are fixedly installed on the side of the bottom construction frame 7. The guide rods 3 43 are slidably installed on the guide blocks 3 42 at the corresponding positions. By using the guide blocks 3 42 in conjunction with the guide rods 3 43, the vertical movement of the bottom construction frame 7 can be supported, so that the bottom construction frame 7 has good stability when moving up and down and is not prone to tilting or shaking.

[0053] Several sliding channels are provided on the side of the bottom construction frame 7, and a limit rod 44 is fixedly installed in the sliding channel. The sliding plate 23 passes through the sliding channel and is slidably installed on the outer surface of the limit rod 44. Two assembly blocks 45 are fixedly installed on the side of the bottom construction frame 7. A motor 46 is fixedly installed on the side of one of the assembly blocks 45. A bidirectional lead screw 47 is rotatably installed between the two assembly blocks 45. The output shaft of the motor 46 is fixedly connected to the bidirectional lead screw 47. Threaded plates 48 are threadedly installed on the outer surfaces of the two threads of the bidirectional lead screw 47. The threaded plates 48 are fixedly installed at the ends of the sliding plates 17 at corresponding positions. The motor 46 drives the bidirectional lead screw 47 to rotate, thereby driving the two threaded plates 48 to move relative to each other. In turn, the sliding plate 23 drives the two clamping plates 24 to move relative to each other. The limit rod 44 can provide support for the movement of the threaded plates 48, so that the threaded plates 48 have good movement stability during movement.

[0054] This invention also provides a method for using a prestressed anchor bolt positioning and pre-embedded device, comprising the following steps:

[0055] S1. Place the fixed base-1 on the horizontal ground, and use the ground nail-2 to pass through the fixed base-1 and drive it into the horizontal ground.

[0056] S2. Drive the operating handle downwards and pull out the pin 28. At this time, the sliding plate 10 is unlocked. The operating handle drives the sliding plate 10 to move downwards. The sliding plate 10 drives the locking rod 11 to move downwards and disengage from the locking groove on the turntable 8. Then, the pin 28 passes through the insertion hole at the lower position and is inserted into the slot on the sliding plate 10. When the sliding plate 10 moves downwards, it will drive the guide block 25 to slide on the surface of the guide rod 26. At this time, the spring 27 deforms, and the turntable 8 is unlocked. Rotating the turntable 8 drives the central construction frame 5 to rotate through the rotating shaft 4. Adjust the inclination angle of the anchor bolt construction inclined surface by adjusting the inclination of the middle construction frame 5, the bottom construction frame 7 and the top construction frame 6 until the middle construction frame 5, the bottom construction frame 7 and the top construction frame 6 are exactly perpendicular to the anchor bolt construction inclined surface. Then pull out the pin 28. At this time, the sliding plate 10 will move upward and reset under the action of the spring 27, thereby driving the locking rod 11 to move and insert into the locking groove to lock the turntable 8. Then, the pin 28 is passed through the insertion hole at the upper position and inserted into the slot on the sliding plate 10 to lock the sliding plate 10.

[0057] S3. Start motor 36 to drive threaded rod 37 to rotate, which in turn drives threaded plate 38 to move connecting block 39, thereby driving bottom construction frame 7 to move towards anchor construction surface. When fixed base 21 on bottom construction frame 7 is in contact with anchor construction surface, stop motor 36. Then, drive ground nail 22 through fixed base 21 into anchor construction surface. At this time, two top clamping plates 24 will enter the anchor pre-embedded hole. Then start motor 46. Motor 46 will drive bidirectional screw 47 to rotate, which will drive threaded plates 48 on both sides to move away from each other. Thus, sliding plate 3 23 will drive the two top clamping plates 24 to move away from each other. When the top clamping plate 24 touches the inner wall of anchor pre-embedded hole, stop motor 46. At this time, the end of anchor pre-embedded hole is tightened to prevent collapse.

[0058] S4. Pass the anchor rod through the top construction frame 6, the middle construction frame 5 and the bottom construction frame 7 in sequence, then unscrew the bolts, turn the knob 14, and drive the support plate 16 to move through the transmission of the sprocket 13 and the chain 15. Use the inclined slide rail in conjunction with the support roller 18 to make the four sliding plates 10 move inward synchronously, and then drive the top tightening wheel 20 to move inward to abut against the surface of the anchor rod through the wheel seat 19, so as to achieve the centering of the anchor rod. Then screw in the fixing bolt 34 to lock the position, and then start the anchor rod pre-embedding pushing device so that the anchor rod can enter the pre-embedding hole.

[0059] In actual construction scenarios, the usage method and implementation process of this prestressed anchor positioning and pre-embedded device are as follows:

[0060] Installation and tilt angle adjustment: After selecting a suitable location on the construction site, the construction personnel place the two fixed bases-1 on the level ground, ensuring that they are placed stably. Then, using tools, they drive the ground nails-2 through the holes on the fixed bases-1 one by one and forcefully drive them into the level ground, so that the fixed bases-1 are firmly connected to the ground, providing a stable support foundation for the entire device.

[0061] In areas with complex terrain or poor geological conditions, such as soft soil foundations or surfaces with a lot of gravel, it may be necessary to first level and compact the ground to ensure that the fixing base-1 is in close contact with the ground and that the ground nails-2 can be effectively fixed. At the same time, construction personnel can use tools such as a level to check the levelness of the fixing base-1 to ensure the accuracy of the device installation.

[0062] Next, the inclination of the middle construction frame 5, the bottom construction frame 7, and the top construction frame 6 are adjusted according to the actual inclination angle of the anchor bolt construction slope. The operator drives the operating handle in the side operating channel of the locking housing 9 downwards, causing the sliding plate 10 to move downwards. During this process, the guide block 25 on the side of the sliding plate 10 slides smoothly on the surface of the guide rod 26 inside the locking housing 9, providing good guidance, while simultaneously compressing the spring 27 to cause elastic deformation. The sliding plate 10 drives the locking rod 11 downwards until the locking rod 11 disengages from the locking groove on the turntable 8. At this point, the pin 28 is pulled out from the upper insertion hole of the locking housing 9, passed through the lower insertion hole, and inserted into the slot on the side of the sliding plate 10 to temporarily fix the position of the sliding plate 10 and prevent accidental movement.

[0063] During operation, construction workers can observe the angle markings on turntable 8 or use angle measuring tools to more accurately grasp the rotation angle and ensure the accuracy of the adjustment. Furthermore, for construction scenarios with high angle adjustment requirements, the angle of turntable 8 can be fine-tuned multiple times until the ideal tilt is achieved.

[0064] After completing the above operations, turntable 8 is in the unlocked state. The construction personnel rotate turntable 8, which, via shaft 4, drives the middle construction frame 5 to rotate, thereby causing the bottom construction frame 7 and the top construction frame 6 to rotate synchronously. The construction personnel closely observe the relative angle between the construction inclination surface and the device. When the middle construction frame 5, bottom construction frame 7, and top construction frame 6 are exactly perpendicular to the anchor bolt construction inclination surface, the rotation of turntable 8 is stopped. At this point, pin 28 is pulled out, and sliding plate 10 moves upward and resets under the elastic force of spring 27, causing locking rod 11 to insert into the locking groove of turntable 8, thus locking turntable 8. Finally, pin 28 is inserted again into the upper hole of locking housing 9 and into the slot on the side of sliding plate 10, completing the locking of sliding plate 10 and ensuring that the tilt angle of the entire device is fixed, providing a stable foundation for subsequent construction.

[0065] Bottom construction frame position adjustment and anchor bolt hole end tightening: After completing the device tilt angle adjustment, start the motor 36 on the surface of the adjusting shell 35. The output shaft of the motor 36 drives the threaded rod 37 to rotate. The threaded plate 38, which is threaded on the outer surface of the threaded rod 37, moves along the axial direction of the threaded rod 37 under the action of the rotation of the threaded rod 37. The connecting block 39 on the side of the threaded plate 38 moves with the threaded plate 38. The connecting block 39 passes through the strip channel on the side of the adjusting shell 35, drives the adjusting plate 40 to move, and then drives the bottom construction frame 7 to move towards the anchor bolt construction surface.

[0066] During the movement of the bottom construction frame 7, construction personnel can precisely control the movement distance of the bottom construction frame 7 by observing the distance between the bottom construction frame 7 and the anchor bolt construction surface, combined with the scale markings on the adjusting shell 35 or by using distance measuring tools. At the same time, the speed of motor 36 can be adjusted in a timely manner according to the actual site conditions to ensure that the bottom construction frame 7 smoothly approaches the anchor bolt construction surface.

[0067] As the bottom construction frame 7 moves, its side guide rod 3 43 slides within the side guide block 3 42 of the middle construction frame 5, providing stable guidance and support for the movement of the bottom construction frame 7 and preventing it from shifting or swaying. Once the fixed base 21 on the bottom construction frame 7 is tightly fitted with the anchor bolt construction surface, the motor 36 is stopped. Construction workers use tools to insert the ground stake 22 through the hole in the fixed base 21 and drive it into the anchor bolt construction surface to further secure the position of the bottom construction frame 7.

[0068] At this point, the two clamping plates 24 inside the bottom construction frame 7 are located inside the anchor bolt pre-embedded holes. To prevent the ends of the anchor bolt pre-embedded holes from collapsing, the second motor 46 on the side assembly block 45 of the bottom construction frame 7 is activated. The output shaft of the second motor 46 drives the bidirectional lead screw 47 to rotate. Under the rotation of the bidirectional lead screw 47, the threaded plates 48 on the two threaded outer surfaces of the bidirectional lead screw 47 move away from each other along the axial direction of the bidirectional lead screw 47. The threaded plates 48 are fixedly installed at the end of the sliding plate 23, causing the sliding plate 23 to slide in the sliding channel on the side of the bottom construction frame 7. The limiting rod 44 in the sliding channel provides support and guidance for the movement of the sliding plate 23, ensuring smooth movement. The sliding plate 23 drives the two clamping plates 24 to move away from each other. When the clamping plates 24 tightly abut against the inner wall of the anchor bolt pre-embedded hole, the second motor 46 is stopped, achieving end clamping of the anchor bolt pre-embedded hole and effectively preventing collapse.

[0069] During the tightening process, construction personnel can determine whether the tightening force is appropriate by using pressure sensors or observing the deformation of the tightening plate 24. If the tightening force is insufficient, the rotation time of motor 2 46 can be appropriately increased; if the tightening force is too large, motor 2 46 can be rotated in the opposite direction for fine adjustment, ensuring the tightening effect while avoiding damage to the anchor bolt pre-embedded hole.

[0070] Anchor Bolt Alignment and Insertion: After adjusting the position of the bottom construction frame 7 and tightening the ends of the anchor bolt holes, the anchor bolts are aligned and inserted. The workers pass the anchor bolts sequentially through the top construction frame 6, the middle construction frame 5, and the bottom construction frame 7. Then, the fixing bolts 34 on the knob 14 are unscrewed to release the lock on the knob 14. Rotating the knob 14 causes the sprocket 13 inside the mounting base 12 to rotate. Since the four sprockets 13 are connected by a chain 15, the rotation of one sprocket 13 drives the other sprockets 13 to rotate synchronously.

[0071] The support plate 16 on the upper surface of the sprocket 13 moves as the sprocket 13 rotates, and the inclined slide on the support plate 16 cooperates with the support roller 18. The support roller 18 rolls in the inclined slide, driving the sliding plate 17 to slide inward along the guide rod 32 on the side of the top construction frame 6. The guide block 31 on the side of the sliding plate 17 slides on the guide rod 32 to ensure smooth movement, while compressing the spring 33. The sliding plate 17 drives the tightening wheel 20 to move inward through the wheel seat 19 until the tightening wheel 20 evenly contacts the surface of the anchor rod, achieving the centering of the anchor rod.

[0072] During the alignment process, construction personnel can use alignment detection instruments, such as laser alignment instruments, to monitor the alignment of the anchor bolts in real time. If any misalignment is detected, knob 14 can be finely adjusted to ensure that the alignment accuracy of the anchor bolts meets the construction requirements.

[0073] After the anchor bolt is aligned, the fixing bolt 34 is screwed into the fixing thread groove on the surface of the mounting base 12 on the same side as the knob 14, locking the knob 14, sprocket 13, and the entire alignment structure to prevent displacement during anchor bolt insertion. Finally, the anchor bolt pre-embedding pushing device is activated. With the support of the stable alignment structure and the already tightened end of the anchor bolt pre-embedding hole, the anchor bolt is smoothly and accurately inserted into the pre-embedding hole, completing the positioning and pre-embedding work of the prestressed anchor bolt.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pre-embedded device for positioning and construction of prestressed anchor bolts, characterized in that: It includes two fixed bases (1), two ground nails (2) are installed on the fixed bases (1), side support plates (3) are fixedly installed on the upper surface of the fixed bases (1), and rotating shafts (4) are rotatably installed between the two side support plates (3). A middle construction frame (5) is fixed between the two rotating shafts (4). A top construction frame (6) is fixedly installed on the upper surface of the middle construction frame (5), and a bottom construction frame (7) is movably installed on the lower surface of the middle construction frame (5). A turntable (8) is fixedly installed at the end of one of the rotating shafts (4), and the outer surface of the turntable (8) is opened. There are several locking slots. A locking shell (9) is fixedly installed on the side of the side support plate (3) on the same side as the turntable (8). A sliding plate (10) is slidably installed inside the locking shell (9). A locking rod (11) is fixedly installed on the upper surface of the sliding plate (10). The locking rod (11) slides through and extends out of the locking shell (9) and cooperates with the locking slots. An operating channel is opened on the side of the locking shell (9). An operating handle located in the operating channel is fixedly installed on the side of the sliding plate (10). Mounting seats (12) are installed at the four corners of the top construction frame (6). A sprocket (13) is rotatably installed inside the seat (12). A knob (14) is fixedly installed at the end of one of the sprockets (13). A chain (15) is connected between the four sprockets (13). Sliding plates (17) are slidably installed on the front and rear sides and the left and right sides of the top construction frame (6). A support roller (18) is rotatably installed on the upper surface of the sliding plate (17). A support plate (16) is fixedly installed on the front and rear sides and the left and right sides of the upper surface of the sprocket (13). An inclined slide is provided on the support plate (16). The support roller (18) is rolled and attached to the support plate. The inner wall of the inclined slide is inclined at the position. A wheel seat (19) is fixedly installed at one end of the sliding plate two (17) facing the inside of the top construction frame (6). A top clamping wheel (20) is rotatably installed inside the wheel seat (19). A fixed base two (21) is fixedly installed on the outer surface of the bottom construction frame (7). Several ground nails two (22) are inserted on the fixed base two (21). Eight sliding plates three (23) are slidably installed inside the bottom construction frame (7). A top clamping plate (24) is fixedly installed between the four sliding plates three (23) on the same side. The two top clamping plates (24) are arranged opposite each other.

2. The prestressed anchor bolt positioning and pre-embedded device according to claim 1, characterized in that: Several guide blocks (25) are fixedly installed on the side of the sliding plate (10), and several guide rods (26) are fixedly installed inside the locking shell (9). The guide blocks (25) are slidably installed on the outer surface of the guide rods (26) at the same side position. A spring (27) is fixedly installed between the guide blocks (25) and the inner wall of the locking shell (9). Two insertion holes are opened on the locking shell (9), and a pin (28) is inserted into one of the insertion holes. A slot for inserting the pin (28) is opened on the side of the sliding plate (10). Through the above structure, the guide blocks (25) and the guide rods (26) are connected. With the spring (27), when the sliding plate (10) slides, the guide block (25) slides on the surface of the guide rod (26), which plays a supporting and guiding role, ensuring that the sliding plate (10) slides smoothly and is not easy to tilt or shake. When the sliding plate (10) moves downward and the locking rod (11) is disengaged from the locking groove, the spring (27) deforms. Using the reverse force of the spring (27), the locking rod (11) can be quickly reset, improving the ease of operation. The pin (28) cooperates with the insertion hole and slot to realize the lateral limit of the sliding plate (10), avoid its accidental movement, and enhance the stability of the use effect.

3. The prestressed anchor bolt positioning and pre-embedded device according to claim 2, characterized in that: Limiting slide plates (29) are fixedly installed on the front and rear sides and the left and right sides of the top construction frame (6). Limiting grooves are opened on the side of the support plate (16). The limiting slide plates (29) are slidably installed on the inner wall of the limiting grooves at the corresponding positions. The limiting slide plates (29) slide in the limiting grooves, which can limit and support the horizontal movement of the support plate (16), effectively improve the stability of the movement of the support plate (16), prevent it from shaking, ensure the relative position stability of each component during the use of the entire device, and thus ensure the accuracy of the anchor bolt positioning construction.

4. The prestressed anchor bolt positioning and pre-embedded device according to claim 3, characterized in that: Two limiting rings (30) are fixedly installed on the outer surface of the support roller (18). The two limiting rings (30) are respectively attached to the upper and lower sides of the support plate (16). The setting of the limiting rings (30) can limit the support roller (18) and prevent the support roller (18) from leaving the slide when it moves in the inclined slide of the support plate (16). This ensures that the support roller (18) always rolls on the predetermined track, maintains the stability of the movement of the sliding plate (17) and the top clamping wheel (20), and thus ensures the reliability of the anchor rod centering and clamping.

5. The prestressed anchor bolt positioning and pre-embedded device according to claim 4, characterized in that: The sliding plate 2 (17) is fixedly mounted on the side of the guide block 2 (31), and the guide rod 2 (32) is slidably mounted on the guide block 2 (31). The guide rod 2 (32) is fixedly mounted on the side of the top construction frame (6). The spring 2 (33) is fixedly mounted between the guide block 2 (31) and the top construction frame (6). The guide rod 2 (32) and the guide block 2 (31) cooperate with each other to support and guide the horizontal movement of the sliding plate 2 (17), thereby improving the stability of the movement of the sliding plate 2 (17). When the sliding plate 2 (17) drives the wheel seat (19) and the top wheel (20) to move inward, the spring 2 (33) deforms. When the fixing bolt (34) is unscrewed, the elastic force of the spring 2 (33) can drive the top wheel (20) to move outward quickly to reset, which facilitates subsequent operation and improves the ease of use of the device.

6. The prestressed anchor bolt positioning and pre-embedded device according to claim 5, characterized in that: A fixing bolt (34) is threaded onto the knob (14). Several fixing thread grooves are opened on the surface of the mounting base (12) on the same side as the knob (14). The fixing bolt (34) is used in conjunction with the fixing thread grooves. The cooperation between the fixing bolt (34) and the fixing thread grooves can lock the position of the knob (14) after it is rotated, thereby locking the position of the sprocket (13), chain (15) and support plate (16). This locking structure is simple and easy to operate. It can effectively fix the position of the anchor rod after it is aligned and ensure the stability of the anchor rod during the insertion of the pre-embedded hole.

7. The prestressed anchor bolt positioning and pre-embedded device according to claim 6, characterized in that: An adjusting shell (35) is fixedly installed on the side of the middle construction frame (5). A threaded rod (37) is rotatably installed inside the adjusting shell (35). A motor (36) is fixedly installed on the surface of the adjusting shell (35). The output shaft of the motor (36) is fixedly connected to the threaded rod (37). A threaded plate (38) is threadedly installed on the outer surface of the threaded rod (37). A connecting block (39) is fixedly installed on the side of the threaded plate (38). The connecting block (39) extends out of the adjusting shell (35) through a strip channel opened on the side of the adjusting shell (35) and is fixedly installed with an adjusting plate (40). The bottom end of the adjusting plate (40) is fixedly installed on the side of the bottom construction frame (7). The adjusting shell (35) has several limiting rods (41) fixedly installed inside. The threaded plate (38) is slidably installed on the outer surface of the limiting rod (41). The starting motor (36) drives the threaded rod (37) to rotate, which in turn drives the threaded plate (38) to move up and down. The adjusting plate (40) moves up and down through the connecting block (39), thereby adjusting the position of the bottom construction frame (7). The limiting rod (41) supports and limits the threaded plate (38), preventing centrifugal shaking when the threaded plate (38) moves, ensuring that the bottom construction frame (7) can be accurately adjusted to the appropriate position, so that the top clamping plate (24) can be smoothly inserted into the anchor hole, improving the accuracy and stability of the operation.

8. The prestressed anchor bolt positioning and pre-embedded device according to claim 7, characterized in that: Several guide blocks (42) are fixedly installed on the side of the middle construction frame (5), and several guide rods (43) are fixedly installed on the side of the bottom construction frame (7). The guide rods (43) are slidably installed on the guide blocks (42) at the corresponding positions. The guide blocks (42) and guide rods (43) cooperate with each other to provide support for the up and down movement of the bottom construction frame (7), so that the bottom construction frame (7) has good stability during the movement and is not prone to tilting or shaking. This further ensures the reliability of the device during the adjustment process and helps to improve the quality of anchor positioning construction.

9. The prestressed anchor bolt positioning and pre-embedded device according to claim 8, characterized in that: The bottom construction frame (7) has several sliding channels on its side, and a limit rod (44) is fixedly installed in the sliding channel. The sliding plate (23) passes through the sliding channel and is slidably installed on the outer surface of the limit rod (44). Two assembly blocks (45) are fixedly installed on the side of the bottom construction frame (7). A motor (46) is fixedly installed on the side of one of the assembly blocks (45). A bidirectional lead screw (47) is rotatably installed between the two assembly blocks (45). The output shaft of the motor (46) is fixedly connected to the bidirectional lead screw (47). The outer surfaces of the two threads of the bidirectional lead screw (47) are both A threaded plate two (48) is installed on the threaded part, which is fixedly installed on the end of the sliding plate two (17) at the corresponding position. The motor two (46) is started, which drives the bidirectional screw (47) to rotate, so that the threaded plates two (48) on both sides move relative to each other, and then drives the two clamping plates (24) to move relative to each other through the sliding plate three (23). The limiting rod two (44) supports the movement of the threaded plate two (48), ensuring the stability of the movement of the threaded plate two (48), so that the clamping plate (24) can accurately clamp inside the end of the anchor bolt pre-embedded hole, effectively preventing the end of the anchor bolt hole from collapsing and improving the safety and stability of the operation.

10. The method of using the prestressed anchor bolt positioning and pre-embedded device according to claim 9, characterized in that, Includes the following steps: S1. Place the fixed base (1) on the horizontal ground and use the ground nail (2) to pass through the fixed base (1) and drive it into the horizontal ground; S2. Drive the operating handle downwards and pull out the pin (28). At this time, the sliding plate (10) is unlocked. The operating handle drives the sliding plate (10) to move downwards. The sliding plate (10) drives the locking rod (11) to move downwards and disengage from the locking groove on the turntable (8). Then, the pin (28) passes through the insertion hole at the lower position and is inserted into the slot on the sliding plate (10). When the sliding plate (10) moves downwards, it will drive the guide block (25) to slide on the surface of the guide rod (26). At this time, the spring (27) deforms. At this time, the turntable (8) is unlocked. Rotating the turntable (8) drives the middle construction frame (5) to rotate through the rotating shaft (4). Adjust the inclination of the middle construction frame (5), bottom construction frame (7) and top construction frame (6) according to the inclination angle of the anchor construction inclined surface, and adjust them until the middle construction frame (5), bottom construction frame (7) and top construction frame (6) are exactly perpendicular to the anchor construction inclined surface. Then pull out the pin (28). At this time, the sliding plate (10) will move upward and reset under the action of the spring (27), thereby driving the locking rod (11) to move and insert into the locking groove to lock the turntable (8). Then the pin (28) passes through the hole at the upper position and is inserted into the slot on the sliding plate (10) to lock the sliding plate (10). S3. Start motor one (36) to drive threaded rod (37) to rotate, which in turn drives threaded plate one (38) to drive connecting block (39) to move, thereby driving bottom construction frame (7) to move towards anchor construction surface. When fixed base two (21) on bottom construction frame (7) is in contact with anchor construction surface, stop motor one (36), then drive ground nail two (22) through fixed base two (21) into anchor construction surface. At this time, two top clamping plates (24) will enter the anchor pre-embedded hole. Then start motor two (46), which will drive bidirectional screw (47) to rotate, thereby driving threaded plate two (48) on both sides to move away from each other. Thus, through sliding plate three (23), the two top clamping plates (24) will move away from each other. When the top clamping plate (24) touches the inner wall of anchor pre-embedded hole, stop motor two (46). At this time, the end of anchor pre-embedded hole is tightened to prevent collapse. S4. Pass the anchor rod through the top construction frame (6), the middle construction frame (5) and the bottom construction frame (7) in sequence, then unscrew the bolts, turn the knob (14), drive the support plate (16) to move through the transmission of the sprocket (13) and the chain (15), use the inclined slide rail in conjunction with the support roller (18) to make the four sliding plates (10) move inward synchronously, and then drive the top tightening wheel (20) to move inward to contact the anchor rod surface through the wheel seat (19) to achieve the centering of the anchor rod, then screw in the fixing bolt (34) to lock the position, and then start the anchor rod pre-embedding pushing device so that the anchor rod can enter the pre-embedding hole.

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