Prefabricated steel structure beam column calibration positioning device

Abstract

The utility model discloses an assembly type steel structure beam column calibration positioning device relates to calibration positioning device technical field, the utility model discloses a base, the top of base is slidably connected with left and right displacement subassembly, the top fixedly connected with rotating subassembly of left and right displacement subassembly, the top fixedly connected with angle regulation subassembly of rotating subassembly. The utility model third motor can synchronous drive both ends screw rod rotation after starting, because screw rod is connected with moving plate screw, can drive moving plate and top clamping plate close or far away from beam column, and the clamping demand of adaptation different size beam column, simultaneously, the limit block of clamping plate bottom is slidably connected in the limit slot, can accurate direction moving plate and the moving direction of clamping plate, avoid deviation to guarantee clamping position accurate, in addition, the rubber pad of clamping plate inner surface not only can increase and beam column friction, prevent beam column slip, still can buffer clamping force, avoid the surface of beam column and be damaged because of clamping, all -round reduce beam column drop risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of calibration and positioning devices, and in particular relates to a prefabricated steel structure beam and column calibration and positioning device. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. They are primarily composed of beams, columns, trusses, and other components made of shaped steel and steel plates, and are treated with rust removal and prevention processes such as silanization, pure manganese phosphating, washing and drying, and galvanizing. The components are typically connected by welds, bolts, or rivets. Due to their light weight and ease of construction, steel structures are widely used in large factories, stadiums, and high-rise buildings.

[0003] Chinese patent application CN212105190U discloses a convenient calibration and positioning device for connecting steel structures, including a base box. Two sets of second fixing blocks are provided on the inner wall of the bottom of the base box. A second motor plate is fixedly connected to the inner wall of the bottom of the base box, and a second motor is fixedly connected to the upper surface of the second motor plate. The output end of the second motor is fixedly connected to a threaded rod. The two sets of second fixing blocks are rotatably connected to the left and right ends of the threaded rod, respectively. The threaded rod is threadedly connected to the bottom end of a support rod. This convenient calibration and positioning device for connecting steel structures achieves smooth movement of the base plate by energizing the second motor to drive the threaded rod to rotate, which in turn engages with the support rod. Energizing the first motor causes the connecting shaft to engage with a lead screw, which in turn engages with a worm gear, which in turn engages with the support rod. The support rod then drives the bearing plate to deflect, improving positioning accuracy.

[0004] This patent uses electromagnets to attract the beams and columns to be installed, but it lacks a protective and fixing structure. Since beams and columns are generally large, the attraction by electromagnets alone is not strong enough, and there is still a risk of them falling. In addition, the calibration and positioning device of this patent does not have an angle adjustment structure, so it cannot achieve the calibration and positioning function when installing inclined beams and columns.

[0005] To address these issues, we provide a prefabricated steel structure beam and column calibration and positioning device. Utility Model Content

[0006] The purpose of this utility model is to provide a prefabricated steel structure beam and column calibration and positioning device. By cooperating with the angle adjustment component and the clamping and positioning component, it solves the problem that the existing calibration and positioning devices do not have an angle adjustment structure and a clamping and fixing structure, which makes it inconvenient to install beams and columns.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a prefabricated steel structure beam and column calibration and positioning device, comprising a base, a left and right displacement component slidably connected to the top of the base, a rotating component fixedly connected to the top of the left and right displacement component, an angle adjustment component fixedly connected to the top of the rotating component, and a clamping and positioning component fixedly connected to the top of the angle adjustment component. The left and right displacement component includes a first motor fixedly connected to the top of the base, a worm gear fixedly connected to the output shaft of the first motor, a worm wheel meshing on the surface of the worm gear, a transmission shaft fixedly connected to the inner cavity of the worm wheel, the transmission shaft being fixedly connected to the base via a bearing seat, gears fixedly connected to both ends of the transmission shaft, and mounting plates meshing on the tops of the gears. The rotating component includes a second motor fixedly connected to the top of the mounting plate, and a support plate fixedly connected to the output shaft of the second motor.

[0009] The present invention is further configured such that the angle adjustment component includes a support rod fixedly connected to the front and rear ends of one side of the top of the support plate. The top of the support rod is movably connected to a placement plate via a pin. The other side of the bottom of the placement plate is movably connected to the front and rear ends of a first hydraulic telescopic rod via pins. The other end of the first hydraulic telescopic rod is movably connected to the support plate via a pin. The angle adjustment component forms a stable rotation fulcrum by means of the pin connection between the support rod and the placement plate. With the pin connection at both ends of the first hydraulic telescopic rod, the extension and retraction of the first hydraulic telescopic rod can drive the placement plate to rotate around the support rod, thereby flexibly adjusting the tilt angle of the placement plate, and thus driving the beam and column to adjust their angles synchronously. This can accurately adapt to the installation requirements of beams and columns with different tilt angles, realize the calibration and positioning of tilted beams and columns, and ensure that the installation angle of beams and columns meets the construction requirements.

[0010] The present invention is further configured such that the clamping and positioning assembly includes limiting grooves formed at the four corners of the top of the placement plate and an installation groove formed at the center of the placement plate. A third motor is fixedly connected to the inner cavity of the installation groove. A lead screw is fixedly connected to both ends of the third motor. A moving plate is threadedly connected to the surface of the lead screw. A clamping plate is fixedly connected to the top of the moving plate. Limiting blocks are fixedly connected to both sides of the bottom of the clamping plate. The limiting blocks are slidably connected to the inner cavity of the limiting groove. The clamping and positioning assembly drives the lead screw to rotate through the third motor, which drives the threaded moving plate to move, thereby causing the clamping plate to clamp the beam and column. This allows for the fixing of beams and columns of different sizes. The cooperation between the limiting blocks and the limiting groove guides the movement direction of the moving plate and the clamping plate, preventing deviation and ensuring accurate clamping position. The rubber pad not only increases the friction with the beam and column to prevent slippage, but also buffers the clamping force, protecting the surface of the beam and column from damage, effectively improving the stability and safety of the beam and column fixing.

[0011] The present invention is further configured such that the left and right displacement component includes sliding grooves at the front and rear ends of the bottom of the base, a sliding plate is slidably connected to the inner cavity of the sliding groove, the top of the sliding plate is fixedly connected to the mounting plate, and the front and rear ends of the bottom of the mounting plate are provided with toothed grooves for cooperating with gears. The sliding cooperation between the sliding groove and the sliding plate in the left and right displacement component can play an auxiliary guiding role in the left and right displacement of the mounting plate, avoiding lateral deviation or jamming of the mounting plate when it moves with the gear, further improving the stability and accuracy of the left and right displacement of the mounting plate, and ensuring that the left and right displacement adjustment effect meets expectations.

[0012] The present invention is further configured such that the rotating assembly includes a second hydraulic telescopic rod fixedly connected to both sides of the second motor. The output shaft of the second hydraulic telescopic rod is fixedly connected to a locking plate. The inner wall of the locking plate is tightly fitted with the output shaft of the second motor. The second hydraulic telescopic rod of the rotating assembly pushes the locking plate to fit tightly with the output shaft of the second motor, thereby locking and fixing the output shaft of the second motor and the support plate. This prevents the support plate from loosening and rotating due to external force or its own weight after rotational positioning, ensuring the stability and accuracy of rotational positioning and avoiding affecting the beam and column calibration positioning effect.

[0013] The present invention is further configured such that the rotating assembly includes a cylinder fixedly connected to the bottom of the support plate, and a caster wheel is fixedly connected to the bottom of the cylinder. The bottom of the caster wheel contacts the top of the mounting plate. The cylinder of the rotating assembly supports the caster wheel. The caster wheel contacts the top of the mounting plate. When the support plate rotates, it can assist the support plate in rotating, reduce the load on the second motor, avoid damage to the second motor due to excessive load, and improve the smoothness of the rotation process of the support plate, ensuring convenient and efficient rotation adjustment.

[0014] The present invention is further configured such that a rubber pad is bonded to the inner surface of the clamping plate by an adhesive. The surface of the rubber pad is provided with anti-slip texture. The rubber pad can increase the friction with the surface of the beam and column, effectively preventing the beam and column from slipping after being fixed. At the same time, the rubber pad has a certain elasticity, which can buffer the impact of the clamping force on the surface of the beam and column during the clamping process, avoiding scratches or damage to the surface of the beam and column due to excessive clamping force, and protecting the appearance of the beam and column.

[0015] The present invention has the following beneficial effects.

[0016] 1. After the third motor of this utility model is started, it can synchronously drive the lead screws at both ends to rotate. Since the lead screws are threadedly connected to the moving plate, they can drive the moving plate and the top clamping plate to move closer to or away from the beam and column, adapting to the clamping requirements of beams and columns of different sizes. At the same time, the limiting block at the bottom of the clamping plate is slidably connected in the limiting groove, which can accurately guide the movement direction of the moving plate and the clamping plate, avoiding deviation and ensuring accurate clamping position. In addition, the rubber pad on the inner surface of the clamping plate can not only increase the friction with the beam and column to prevent the beam and column from slipping, but also buffer the clamping force to avoid damage to the surface of the beam and column due to clamping, thus reducing the risk of the beam and column falling in all aspects.

[0017] 2. The support rod of this utility model is movably connected to the placement plate through a pin to form a stable rotation fulcrum. The two ends of the first hydraulic telescopic rod on the other side of the bottom of the placement plate are respectively connected to the pin of the support plate and the placement plate. It can change its length by telescoping. When it is necessary to adjust the angle of the beam and column, the telescoping of the first hydraulic telescopic rod will push the placement plate to rotate around the pin of the top of the support rod, thereby changing the tilt angle of the placement plate and the beam and column above it. This hydraulically driven adjustment method not only makes the adjustment process smooth, but also makes the angle adjustment range flexible. It can accurately calibrate the installation angle of the tilted beam and column, ensuring that accurate calibration and positioning can be achieved when the tilted beam and column are installed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional view of a prefabricated steel structure beam and column calibration and positioning device.

[0020] Figure 2 This is a three-dimensional schematic diagram of the left and right displacement components in a prefabricated steel structure beam and column calibration and positioning device.

[0021] Figure 3 This is a three-dimensional schematic diagram of a rotating component in a prefabricated steel structure beam and column calibration and positioning device.

[0022] Figure 4 This is a three-dimensional schematic diagram of the angle adjustment component in a prefabricated steel structure beam and column calibration and positioning device.

[0023] Figure 5 This is a three-dimensional schematic diagram of a clamping and positioning component in a prefabricated steel structure beam and column calibration and positioning device.

[0024] Figure 6 This is a three-dimensional schematic diagram of a partial connection structure in a prefabricated steel structure beam and column calibration and positioning device.

[0025] In the attached diagram: 1. Base; 2. Left and right displacement assembly; 21. First motor; 22. Worm gear; 23. Worm wheel; 24. Drive shaft; 25. Gear; 26. Mounting plate; 27. Slide groove; 28. Slide plate; 29. ​​Gear groove; 3. Rotation assembly; 31. Second motor; 32. Support plate; 33. Second hydraulic telescopic rod; 34. Locking plate; 35. Cylinder; 36. Caster wheel; 4. Angle adjustment assembly; 41. Support rod; 42. Placement plate; 43. First hydraulic telescopic rod; 5. Clamping and positioning assembly; 51. Limiting groove; 52. Mounting groove; 53. Third motor; 54. Lead screw; 55. Moving plate; 56. Clamping plate; 57. Limiting block. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-6 This utility model is a prefabricated steel structure beam and column calibration and positioning device, including a base 1, a left and right displacement component 2 slidably connected to the top of the base 1, a rotating component 3 fixedly connected to the top of the left and right displacement component 2, an angle adjustment component 4 fixedly connected to the top of the rotating component 3, and a clamping and positioning component 5 fixedly connected to the top of the angle adjustment component 4. The left and right displacement component 2 includes a first motor 21 fixedly connected to the top of the base 1, a worm gear 22 fixedly connected to the output shaft of the first motor 21, a worm wheel 23 meshing on the surface of the worm gear 22, a transmission shaft 24 fixedly connected to the inner cavity of the worm wheel 23, the transmission shaft 24 being fixedly connected to the base 1 through a bearing seat, and gears 25 fixedly connected to both ends of the transmission shaft 24, with a mounting plate 26 meshing on the top of the gears 25. The rotating component 3 includes a second motor 31 fixedly connected to the top of the mounting plate 26, and a support plate 32 fixedly connected to the output shaft of the second motor 31.

[0028] Specifically, the surfaces of the worm 22 and the worm wheel 23 are machined with high-precision teeth, and their teeth mesh precisely, which can significantly reduce transmission backlash, significantly improve transmission accuracy, and ensure the accuracy of power transmission. The outer circles at both ends of the transmission shaft 24 are interference-fitted with the inner ring of the bearing housing, and the bearing housing is tightly fixed to the base 1 by expansion bolts, which can ensure that the transmission shaft 24 maintains good coaxiality during rotation and avoids radial runout.

[0029] The angle adjustment assembly 4 includes a support rod 41 fixedly connected to the front and rear ends of one side of the top of the support plate 32. The top of the support rod 41 is movably connected to the placement plate 42 via a pin. The front and rear ends of the other side of the bottom of the placement plate 42 are movably connected to the first hydraulic telescopic rod 43 via pins. The other end of the first hydraulic telescopic rod 43 is movably connected to the support plate 32 via a pin. The angle adjustment assembly 4 forms a stable rotation fulcrum by means of the pin connection between the support rod 41 and the placement plate 42. With the movable connection of the pins at both ends of the first hydraulic telescopic rod 43, the extension and retraction of the first hydraulic telescopic rod 43 can drive the placement plate 42 to rotate around the support rod 41, thereby flexibly adjusting the tilt angle of the placement plate 42, and thus driving the beam and column to adjust their angles synchronously. It can accurately adapt to the installation requirements of beams and columns with different tilt angles, realize the calibration and positioning of tilted beams and columns, and ensure that the installation angle of beams and columns meets the construction requirements.

[0030] The clamping and positioning assembly 5 includes limiting grooves 51 formed at the four corners of the top of the placement plate 42 and mounting grooves 52 formed at the axis of the placement plate 42. A third motor 53 is fixedly connected to the inner cavity of the mounting groove 52. Lead screws 54 are fixedly connected to both ends of the third motor 53. A moving plate 55 is threadedly connected to the surface of the lead screws 54. A clamping plate 56 is fixedly connected to the top of the moving plate 55. Limiting blocks 57 are fixedly connected to both sides of the bottom of the clamping plate 56. The limiting blocks 57 are slidably connected to the inner cavity of the limiting grooves 51 for clamping and positioning. Component 5 drives the lead screw 54 to rotate via the third motor 53, which in turn drives the threaded moving plate 55 to move, thereby causing the clamping plate 56 to clamp the beam and column, which can fix beams and columns of different sizes. The cooperation between the limiting block 57 and the limiting groove 51 can guide the movement direction of the moving plate 55 and the clamping plate 56 to avoid deviation and ensure accurate clamping position. The rubber pad can not only increase the friction with the beam and column to prevent slippage, but also buffer the clamping force, protect the surface of the beam and column from damage, and effectively improve the stability and safety of the beam and column fixation.

[0031] The left and right displacement component 2 also includes sliding grooves 27 at the front and rear ends of the bottom of the base 1. A sliding plate 28 is slidably connected to the inner cavity of the sliding groove 27. The top of the sliding plate 28 is fixedly connected to the mounting plate 26. The front and rear ends of the bottom of the mounting plate 26 are provided with toothed grooves 29 for use with the gear 25. The sliding engagement between the sliding groove 27 and the sliding plate 28 in the left and right displacement component 2 can play an auxiliary guiding role in the left and right displacement of the mounting plate 26, avoiding lateral deviation or jamming of the mounting plate 26 when it moves with the gear 25, further improving the stability and accuracy of the left and right displacement of the mounting plate 26, and ensuring that the left and right displacement adjustment effect meets expectations.

[0032] The rotating assembly 3 also includes a second hydraulic telescopic rod 33 fixedly connected to both sides of the second motor 31. The output shaft of the second hydraulic telescopic rod 33 is fixedly connected to a locking plate 34. The inner wall of the locking plate 34 is tightly fitted with the output shaft of the second motor 31. The second hydraulic telescopic rod 33 of the rotating assembly 3 pushes the locking plate 34 to fit tightly with the output shaft of the second motor 31, which can lock and fix the output shaft of the second motor 31 and the support plate 32, preventing the support plate 32 from loosening and rotating due to external force or its own weight after rotational positioning, ensuring the stability and accuracy of rotational positioning, and avoiding affecting the beam and column calibration positioning effect.

[0033] The rotating assembly 3 also includes a cylinder 35 fixedly connected to the bottom of the support plate 32. A caster wheel 36 is fixedly connected to the bottom of the cylinder 35. The bottom of the caster wheel 36 contacts the top of the mounting plate 26. The cylinder 35 of the rotating assembly 3 supports the caster wheel 36. The caster wheel 36 contacts the top of the mounting plate 26. When the support plate 32 rotates, it can assist the support plate 32 in rotating, reduce the load on the second motor 31, prevent the second motor 31 from being damaged due to excessive load, and improve the smoothness of the rotation process of the support plate 32, ensuring convenient and efficient rotation adjustment.

[0034] The inner surface of the clamping plate 56 is bonded with a rubber pad by an adhesive. The surface of the rubber pad is provided with anti-slip texture. The rubber pad can increase the friction with the surface of the beam and column, effectively preventing the beam and column from slipping after fixing. At the same time, the rubber pad has a certain degree of elasticity, which can buffer the impact of clamping force on the surface of the beam and column during clamping, avoiding scratches or damage to the surface of the beam and column due to excessive clamping force, and protecting the appearance of the beam and column.

[0035] When it is necessary to adjust the left and right position of the beam and column, the first motor 21 of the left and right displacement component 2 is started, and its output shaft drives the worm 22 to rotate. The worm 22 precisely meshes with the worm wheel 23 to drive the worm wheel 23 to rotate. The worm wheel 23 drives the transmission shaft 24 to rotate synchronously. The gears 25 at both ends of the transmission shaft 24 rotate together with the transmission shaft 24. The gears 25 mesh with the tooth grooves 29 at the bottom of the mounting plate 26, thereby driving the mounting plate 26 to move in the left and right direction, realizing the adjustment of the left and right position of the beam and column. During this process, the sliding groove 27 at the bottom of the base 1 slides and engages with the sliding plate 28 to assist the mounting plate 26 to move smoothly and prevent the mounting plate 26 from shifting. When it is necessary to adjust the rotation angle of the beam and column, the second motor 31 of the rotating assembly 3 starts, and its output shaft drives the support plate 32 to rotate. The cylinder 35 at the bottom of the support plate 32 supports the caster wheel 36, which rolls on the top of the mounting plate 26 to assist the support plate 32 in rotating smoothly. After the support plate 32 drives the beam and column to rotate to the target angle, the second hydraulic telescopic rod 33 starts, and its output shaft pushes the locking plate 34 to fit tightly with the output shaft of the second motor 31, locking and fixing the support plate 32 to prevent the support plate 32 from rotating. When it is necessary to adjust the tilt angle of the beam and column, the first hydraulic telescopic rod 43 of the angle adjustment component 4 extends and retracts. Since the two ends of the first hydraulic telescopic rod 43 are movably connected to the support plate 32 and the placement plate 42 respectively through pins, and one side of the placement plate 42 is movably connected to the support rod 41 through a pin, when the first hydraulic telescopic rod 43 extends and retracts, it will push the placement plate 42 to rotate around the pin at the top of the support rod 41, thereby changing the tilt angle of the placement plate 42, and thus driving the beam and column fixed by the clamping and positioning component 5 above to adjust the tilt angle synchronously, so as to realize the calibration of the tilt angle of the beam and column. When beams and columns need to be fixed, the third motor 53 of the clamping and positioning assembly 5 is activated. Its output shafts at both ends drive the lead screw 54 to rotate. The lead screw 54 is threadedly connected to the moving plate 55, driving the moving plate 55 to move axially along the lead screw 54. The moving plate 55 then moves the clamping plate 56 at the top synchronously, clamping and fixing the beams and columns. Simultaneously, the limiting block 57 at the bottom of the clamping plate 56 slides within the limiting groove 51 at the top of the placement plate 42, guiding the movement of the moving plate 55 and the clamping plate 56 to prevent deviation and ensure accurate clamping position. The rubber pad on the inner surface of the clamping plate 56 increases friction with the beams and columns, preventing slippage and buffering the clamping force to protect the beam and column surfaces. Through the coordinated work of all components, precise calibration and positioning of the prefabricated steel structure beams and columns are achieved.

[0036] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A prefabricated steel structure beam and column calibration and positioning device, comprising a base (1), characterized in that: The top of the base (1) is slidably connected to a left and right displacement component (2), the top of the left and right displacement component (2) is fixedly connected to a rotation component (3), the top of the rotation component (3) is fixedly connected to an angle adjustment component (4), and the top of the angle adjustment component (4) is fixedly connected to a clamping and positioning component (5). The left and right displacement assembly (2) includes a first motor (21) fixedly connected to the top of the base (1). The output shaft of the first motor (21) is fixedly connected to a worm (22). A worm wheel (23) meshes with the surface of the worm (22). A transmission shaft (24) is fixedly connected to the inner cavity of the worm wheel (23). The transmission shaft (24) is fixedly connected to the base (1) through a bearing seat. Gears (25) are fixedly connected to both ends of the transmission shaft (24). A mounting plate (26) meshes with the top of the gear (25). The rotating assembly (3) includes a second motor (31) fixedly connected to the top of the mounting plate (26), and the output shaft of the second motor (31) is fixedly connected to a support plate (32).

2. The prefabricated steel structure beam and column calibration and positioning device according to claim 1, characterized in that: The angle adjustment assembly (4) includes a support rod (41) fixedly connected to the front and rear ends of one side of the top of the support plate (32). The top of the support rod (41) is movably connected to the placement plate (42) via a pin. The front and rear ends of the other side of the bottom of the placement plate (42) are movably connected to a first hydraulic telescopic rod (43) via a pin. The other end of the first hydraulic telescopic rod (43) is movably connected to the support plate (32) via a pin.

3. The prefabricated steel structure beam and column calibration and positioning device according to claim 2, characterized in that: The clamping and positioning assembly (5) includes limiting grooves (51) opened at the four corners of the top of the placement plate (42) and mounting grooves (52) opened at the center of the placement plate (42). A third motor (53) is fixedly connected to the inner cavity of the mounting groove (52). A lead screw (54) is fixedly connected to both the front and rear ends of the third motor (53). A moving plate (55) is threadedly connected to the surface of the lead screw (54). A clamping plate (56) is fixedly connected to the top of the moving plate (55). Limiting blocks (57) are fixedly connected to both sides of the bottom of the clamping plate (56). The limiting blocks (57) are slidably connected to the inner cavity of the limiting groove (51).

4. The prefabricated steel structure beam and column calibration and positioning device according to claim 1, characterized in that: The left and right displacement component (2) also includes a sliding groove (27) at the front and rear ends of the bottom of the base (1). The inner cavity of the sliding groove (27) is slidably connected to a sliding plate (28). The top of the sliding plate (28) is fixedly connected to the mounting plate (26). The front and rear ends of the bottom of the mounting plate (26) are provided with toothed grooves (29) for use with the gear (25).

5. The prefabricated steel structure beam and column calibration and positioning device according to claim 1, characterized in that: The rotating assembly (3) also includes a second hydraulic telescopic rod (33) fixedly connected to both sides of the second motor (31). The output shaft of the second hydraulic telescopic rod (33) is fixedly connected to a locking plate (34), and the inner wall of the locking plate (34) is tightly fitted to the output shaft of the second motor (31).

6. The prefabricated steel structure beam and column calibration and positioning device according to claim 1, characterized in that: The rotating assembly (3) also includes a cylinder (35) fixedly connected to the bottom of the support plate (32), and a caster wheel (36) is fixedly connected to the bottom of the cylinder (35), with the bottom of the caster wheel (36) in contact with the top of the mounting plate (26).

7. The prefabricated steel structure beam and column calibration and positioning device according to claim 3, characterized in that: The inner surface of the clamping plate (56) is bonded with a rubber pad by an adhesive, and the surface of the rubber pad is provided with anti-slip texture.

Images