Pre-arching supporting device for beam string structure roof structure

Abstract

The invention discloses a pre-arching supporting device for a beam string structure roof structure. Belongs to the technical field of building structure supports. According to the technical scheme, the frame comprises a frame body, the frame body is formed by connecting a plurality of connecting frames and a plurality of supporting frames, and a plurality of supporting device bodies for supporting and fixing the connecting frames are evenly distributed below the connecting frames. The self-locking driving unit composed of the driving motor, the worm and the worm gear is arranged and matched with threaded connection of the rectangular lifting rod and the first lead screw, accurate adjustment of the supporting height is achieved, the reliable self-locking function is achieved, the displacement problem under long-term load bearing or external force disturbance is effectively avoided, and the pre-arching precision is guaranteed; meanwhile, through the rotary connection of the horizontal adjusting mechanism, the rotary plate and the supporting disc and the matched design of the V-shaped groove and the inverted-V-shaped plate, the adjusting operation of the supporting angle and the horizontal position is simplified, and beam string members of different specifications can be rapidly adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structure support, in particular to a pre-arching support device for beam string roof structure. BACKGROUND

[0002] In the field of construction engineering, beam string roof structure is widely used in the roof system of large-scale venues, exhibition centers and other buildings due to its light weight, large span, reasonable stress and other advantages. In the construction process of such structure, in order to offset the deflection deformation under the action of later load, precise form control is realized through pre-arching process, and the pre-arching support device is the core equipment to ensure the smooth implementation of this process. The existing support device usually needs to meet the basic requirements of structural support stability, flexibility of height and angle adjustment, etc. to adapt to the construction requirements under different working conditions.

[0003] However, the existing pre-arching support device for beam string roof structure still has many deficiencies in practical application: first, the height adjustment mechanism of some devices lacks reliable self-locking function, and is easy to displace under long-term load or external disturbance, affecting the pre-arching precision; second, the adjustment structure of support angle and horizontal position is complex in design and tedious in operation, and it is difficult to quickly adapt to different specifications of beam string members; third, the contact part of the support part and the beam string lacks effective buffering and protection, which is easy to cause damage to the surface of the member, and the support stability is insufficient; in addition, the driving and transmission system of some devices is inconvenient to maintain, and the anti-tilting performance of the overall structure needs to be improved, which is difficult to meet the high precision and high safety requirements of large roof structure construction. SUMMARY

[0004] To solve the above technical problems, the present application provides a pre-arching support device for beam string roof structure, which solves the problems of the existing pre-arching support device for beam string roof structure in the background art: first, the height adjustment mechanism of some devices lacks reliable self-locking function, and is easy to displace under long-term load or external disturbance, affecting the pre-arching precision; second, the adjustment structure of support angle and horizontal position is complex in design and tedious in operation, and it is difficult to quickly adapt to different specifications of beam string members; third, the contact part of the support part and the beam string lacks effective buffering and protection, which is easy to cause damage to the surface of the member, and the support stability is insufficient; in addition, the driving and transmission system of some devices is inconvenient to maintain, and the anti-tilting performance of the overall structure needs to be improved, which is difficult to meet the high precision and high safety requirements of large roof structure construction.

[0005] To achieve the above purposes, the technical scheme adopted by the present application is as follows: The application discloses a pre-arch supporting device for a beam string roof structure, which comprises a frame body composed of connecting frames and supporting frames, and supporting device bodies are arranged below the connecting frames to support and fix the connecting frames.

[0006] Preferably, a maintenance opening is arranged on the left side of the rectangular sleeve and communicates with the second rectangular cavity; a maintenance door is hingedly connected to the left side of the rectangular sleeve and is matched with the maintenance opening; a handle is fixedly connected to the outer side of the free end of the maintenance door; a sealing gasket is arranged on the inner side of the maintenance door; and a plurality of locking assemblies are arranged on the left side of the rectangular sleeve and are used for locking the free end of the maintenance door.

[0007] Preferably, the locking assembly comprises a fixed column fixedly connected to the left side of the rectangular sleeve, a rotating plate rotatably connected to the outer end of the fixed column, a cylindrical shell fixedly connected to the outer side of the free end of the rotating plate, a clamping column slidingly arranged in the cylindrical shell, a clamping groove matched with the clamping column and arranged on the outer side of the maintenance door, the outer end of the clamping column and the clamping groove being semicircular, a guide inclined surface arranged at the corner of the outer side of the free end of the maintenance door and used for extruding the clamping column, and a spring arranged in the cylindrical shell and fixedly connected to the inner wall of the cylindrical shell and the clamping column.

[0008] Preferably, the self-locking driving unit comprises a driving motor fixedly connected to the rear side wall of the second rectangular cavity, a worm wheel fixedly connected to the bottom end of the first screw rod and arranged in the second rectangular cavity, a worm fixedly connected to the output end of the driving motor and engaged with the worm wheel, and a front side wall of the second rectangular cavity rotatably connected to the other end of the worm.

[0009] Preferably, a second rectangular cavity is arranged in the rectangular sleeve, and a battery electrically connected with the driving motor is arranged in the second rectangular cavity.

[0010] Preferably, a first square ring plate is fixedly connected to the outer wall of the rectangular sleeve near the top, a second square ring plate is fixedly connected to the outer wall of the rectangular sleeve near the bottom, and four reinforcing vertical rods are evenly arranged between the first square ring plate and the second square ring plate.

[0011] Preferably, a plurality of supporting balls are arranged at the bottom of the left and right ends of the rotating plate, and an annular rolling groove matched with the supporting balls is formed in the top of the supporting disc.

[0012] Preferably, a first flexible pad is arranged in the V-shaped groove, a second flexible pad is arranged on the clamping surface of the inverted V-shaped plate, and mounting holes are formed at the four corners of the base.

[0013] Preferably, L-shaped supports are fixedly connected to the front and rear sides of the rotating plate, an arc-shaped plate matched with the supporting disc is fixedly connected to the bottom of the vertical plate of the L-shaped support, and a rubber pad tightly attached to the supporting disc is arranged on the inner arc surface of the arc-shaped plate.

[0014] Preferably, the horizontal adjusting mechanism comprises a second screw rod horizontally arranged and rotatably connected in the mounting groove, two guide cross bars parallel to the second screw rod are fixedly connected in the mounting groove, the two guide cross bars are symmetrically arranged on the two sides of the second screw rod, the left end of the second screw rod extends to the outside of the mounting plate and is fixedly connected with a knob, a moving seat is threadedly connected to the second screw rod, the two guide cross bars are slidably connected with the moving seat through second linear bearings, and elastic sleeves are arranged between the moving seat and the side walls of the mounting groove.

[0015] Compared with the prior art, the present application provides a pre-arch support device for a string-beam roof structure, which has the following advantages: 1. The present application realizes precise adjustment of support height and has reliable self-locking function by setting a self-locking drive unit composed of a drive motor, a worm and a worm wheel, cooperating with the threaded connection of the rectangular lifting rod and the first lead screw, effectively avoiding displacement under long-term bearing or external disturbance, and ensuring the pre-arch precision; at the same time, through the rotary connection of the horizontal adjusting mechanism, the rotating plate and the supporting disc, and the cooperation design of the V-shaped groove and the inverted V-shaped plate, the adjustment operation of the support angle and the horizontal position is simplified, different specifications of the beam string component can be quickly adapted, and the flexible pad on the V-shaped groove and the inverted V-shaped plate can effectively protect the surface of the component and improve the support stability.

[0016] 2. The present application facilitates the maintenance of the driving and transmission system through the access door and locking assembly on the rectangular sleeve, and the setting of the sealing gasket enhances the protection performance; the cooperation of the reinforcing vertical rod on the outer wall of the rectangular sleeve, the third square ring plate and the auxiliary support plate significantly improves the anti-tilting performance of the overall structure, combined with the design of the mounting hole of the base, ensures the installation stability of the device in the construction of large roof structure, and fully meets the high precision and high safety requirements in the construction process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the schematic diagram of the main structure of the present application; Figure 2 is the structural schematic diagram of the frame body in the present application; Figure 3 is the structural schematic diagram of the support device body in the present application; Figure 4 is the enlarged structural schematic diagram of A in the present application; Figure 3 Figure 5 is the structural schematic diagram of the self-locking drive unit in the present application; Figure 6 is the structural schematic diagram of the locking assembly in the present application; Figure 7 is the sectional view of the support device body in the present application; Figure 8 is the structural schematic diagram of the inverted V-shaped plate in the present application; Figure 9 is the structural schematic diagram of the second lead screw in the present application; Figure 10 is the structural schematic diagram of the support ball in the present application.

[0018] ​The diagram is labeled as follows: 1. Frame body; 2. Support device body; 3. Connecting frame; 4. Support frame; 5. Base; 6. Mounting hole; 7. Rectangular sleeve; 8. Partition plate; 9. First rectangular cavity; 10. Second rectangular cavity; 11. First lead screw; 12. Self-locking drive unit; 1201. Drive motor; 1202. Worm gear; 1203. Worm; 13. Rectangular lifting rod; 14. Mounting plate; 15. Horizontal adjustment mechanism; 1501. Second lead screw; 1502. Guide crossbar; 1503. Knob; 1504. Moving seat; 1505. Telescopic protective sleeve; 16. Support plate; 17. Rotating plate; 18. Vertical plate; 19. V-groove; 20. 2601. Inverted V-shaped plate; 2602. Screw; 2603. Nut; 2604. Inspection door; 2605. Handle; 2606. Sealing gasket; 2607. Locking assembly; 2608. Fixing post; 2609. Rotating plate; 26000. Cylindrical shell; 26000. Locking post; 26000. Locking groove; 26001. Spring; 2601. Battery; 2602. Control switch; 2603. Rubber sealing plug; 3600. First square ring plate; 3600. Second square ring plate; 370. Reinforcing vertical rod; 3800. Third square ring plate; 3900. Auxiliary support plate; 3000. Support ball; 3000. Annular groove; 310. First flexible pad; 320. Second flexible pad; 330. L-shaped bracket; 440. Arc plate; 450. Rubber pad. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] Example 1 Please refer to Figures 1 to 10As shown, a pre-arch support device for a tensioned beam roof structure includes a frame body 1, which is composed of several connecting frames 3 and several support frames 4 connected to each other. Several support device bodies 2 are evenly distributed below the connecting frames 3 to support and fix them. The support device body 2 includes a base 5, and a rectangular sleeve 7 is fixedly connected to the top center of the base 5. A partition 8 is fixedly connected to the inside of the rectangular sleeve 7 near the bottom. The partition 8 divides the inner cavity of the rectangular sleeve 7 into a first rectangular cavity 9 and a second rectangular cavity 10 distributed vertically. A first lead screw 11 is rotatably connected to the top center of the partition 8. The bottom end of the first lead screw 11 extends to the second rectangular cavity 10 and is connected to a self-locking drive unit 12. A matching rectangular lifting rod 1 is slidably arranged in the first rectangular cavity 9. 3. The rectangular lifting rod 13 is threadedly connected to the first lead screw 11. The top of the rectangular lifting rod 13 is fixedly connected to the mounting plate 14. The top of the mounting plate 14 is provided with a mounting groove. A support plate 16 is connected to the mounting groove through a horizontal adjustment mechanism 15. A rotating plate 17 is rotatably connected to the top center of the support plate 16. Two vertical plates 18 are fixedly connected to the top of the rotating plate 17 at intervals. The top of each of the two vertical plates 18 is provided with a V-shaped groove 19. An inverted V-shaped plate 20 is provided in the gap between the two vertical plates 18. Both ends of the inverted V-shaped plate 20 are integrally formed with outer edges. Through holes are provided on both outer edges. The top of the rotating plate 17 is fixedly connected to a screw 21 corresponding to the two through holes respectively. A nut 22 located above the outer edge is threadedly connected to the screw 21.

[0021] Those skilled in the art will understand that the frame body 1 is formed by interconnecting several connecting frames 3 and support frames 4 to form an overall support frame. The support device bodies 2, evenly distributed below the connecting frames 3, are fixedly installed via bases 5. In the support device body 2, the partition 8 inside the rectangular sleeve 7 divides the inner cavity into a first rectangular cavity 9 and a second rectangular cavity 10. The first lead screw 11 at the top center of the partition 8 rotates under the drive of the self-locking drive unit 12, and the rectangular lifting rod 13, which is threadedly connected to the first lead screw 11, slides within the first rectangular cavity 9, thereby driving the mounting plate 14 at the top to... The height is now adjustable; the horizontal adjustment mechanism 15 in the mounting groove at the top of the mounting plate 14 can drive the support plate 16 to adjust its horizontal position. The rotating plate 17, which is rotatably connected to the center of the top of the support plate 16, can rotate around the central axis to adjust the support angle. The two vertical plates 18 at the top of the rotating plate 17 have V-shaped grooves 19, which, together with the inverted V-shaped plate 20 between the two vertical plates 18, form a clamping structure. The through holes at both ends of the inverted V-shaped plate 20 are fitted into the screws 21 at the top of the rotating plate 17. By tightening the nuts 22, the tensioned beam component can be clamped and fixed between the V-shaped groove 19 and the inverted V-shaped plate 20.

[0022] It achieves multi-dimensional precise adjustment of support height, horizontal position and support angle, and can quickly adapt to tensioned beam components of different specifications. The clamping structure ensures support stability and meets the foundation support requirements of pre-arching construction through the cooperation of V-groove 19 and inverted V-shaped plate 20 and the fastening of nut 22.

[0023] Example 2 Furthermore, the rectangular sleeve 7 has an inspection port on its left side that communicates with the second rectangular cavity 10. An inspection door 23 that matches the inspection port is hinged to the left side of the rectangular sleeve 7. A handle 24 is fixedly connected to the outer side of the free end of the inspection door 23. A sealing gasket 25 is provided on the inner side of the inspection door 23. Several locking components 26 are provided on the left side of the rectangular sleeve 7 to lock the free end of the inspection door 23.

[0024] As will be understood by those skilled in the art, the rectangular sleeve 7 has an inspection port on its left side that communicates with the second rectangular cavity 10. A matching inspection door 23 is hinged to the inspection port. The handle 24 on the outside of the free end of the inspection door 23 facilitates opening and closing. The sealing gasket 25 on the inside of the inspection door 23 can enhance the sealing performance after closing. Several locking components 26 on the left side of the rectangular sleeve 7 can lock and fix the free end of the inspection door 23.

[0025] The second rectangular cavity 10 can be easily accessed through the inspection door 23 to inspect and maintain internal components such as the self-locking drive unit 12. The sealing gasket 25 and locking assembly 26 ensure the sealing and stability of the inspection door 23 when it is closed, improving the ease of maintenance and protection of the device.

[0026] Example 3 Furthermore, the locking assembly 26 includes a fixed post 2601 fixedly connected to the left side of the rectangular sleeve 7. A rotating plate 2602 is rotatably connected to the outer end of the fixed post 2601. A cylindrical shell 2603 is fixedly connected to the outer side of the free end of the rotating plate 2602. A locking post 2604 is slidably disposed inside the cylindrical shell 2603. A slot 2605 that cooperates with the locking post 2604 is opened on the outer side of the access door 23. Both the outer end of the locking post 2604 and the slot 2605 are semi-circular. A guide slope is provided at the outer corner of the free end of the access door 23 to facilitate pressing the locking post 2604. A spring 2606 is disposed inside the cylindrical shell 2603. The two ends of the spring 2606 are fixedly connected to the inner wall of the cylindrical shell 2603 and the locking post 2604, respectively.

[0027] Those skilled in the art will understand that the fixing post 2601 of the locking assembly 26 is fixed to the left side of the rectangular sleeve 7, and the rotating plate 2602 rotatably connected to its outer end can rotate freely around the fixing post 2601. The cylindrical shell 2603 at the free end of the rotating plate 2602 is provided with a locking post 2604, and the spring 2606 in the cylindrical shell 2603 applies an outward preload force to the locking post 2604. When closing the inspection door 23, first fully close the inspection door 23, then rotate the rotating plate 2602 so that the locking pin 2604 contacts the guide slope on the outside of the free end of the inspection door 23. As the rotating plate 2602 continues to rotate, the slope presses against the locking pin 2604, causing it to retract into the cylindrical shell 2603 against the elastic force of the spring 2606. When the rotating plate 2602 rotates until the locking pin 2604 is aligned with the locking groove 2605 on the outside of the inspection door 23, the locking pin 2604 pops out under the action of the spring 2606 and locks into the locking groove 2605. Since the outer end of the locking pin 2604 and the locking groove 2605 are both semi-circular, they can fit smoothly, thereby locking the free end of the inspection door 23. To unlock, rotate the rotating plate 2602 in the opposite direction, and the arc surface of the locking groove 2605 presses against the locking pin 2604 to retract into the cylindrical shell 2603, thus opening the inspection door 23.

[0028] The rotation of the rotating plate 2602 and the elastic force of the spring 2606 enable the rapid locking and unlocking of the maintenance door 23. The operation is tool-free, convenient and efficient. The guide slope and semi-circular locking structure reduce the operating resistance and ensure a smooth locking process. At the same time, the preload of the spring 2606 ensures the tight fit between the locking pin 2604 and the locking groove 2605, improving the sealing and stability of the maintenance door 23 after it is closed.

[0029] Example 4 Furthermore, the self-locking drive unit 12 includes a drive motor 1201 fixedly connected to the rear side wall of the second rectangular cavity 10, a worm gear 1202 located inside the second rectangular cavity 10 fixedly connected to the bottom end of the first lead screw 11, a worm 1203 meshing with the worm gear 1202 fixedly connected to the output end of the drive motor 1201, and the other end of the worm 1203 rotatably connected to the front side wall of the second rectangular cavity 10.

[0030] Those skilled in the art will understand that the drive motor 1201 of the self-locking drive unit 12 is fixed to the rear side wall of the second rectangular cavity 10, and the worm 1203 connected to its output end meshes with the worm wheel 1202 at the bottom of the first lead screw 11. The other end of the worm 1203 is rotatably connected to the front side wall of the second rectangular cavity 10. When the drive motor 1201 is working, the worm 1203 drives the worm wheel 1202 to rotate, thereby driving the first lead screw 11 to rotate. By utilizing the self-locking characteristic of the worm gear transmission, the position of the first lead screw 11 can remain unchanged after the drive stops.

[0031] It achieves reliable self-locking after the support height is adjusted, effectively avoiding the problem of support height displacement under long-term load or external disturbance, ensuring the accuracy of pre-arching of the tensioned beam roof structure, and improving construction safety.

[0032] Example 5 Furthermore, a battery 27 electrically connected to the drive motor 1201 is also provided inside the second rectangular cavity 10. A control switch 28 electrically connected to the drive motor 1201 is provided on the front side of the rectangular sleeve 7. A charging port electrically connected to the battery 27 is also provided on the front side of the rectangular sleeve 7. A rubber sealing plug 29 is provided inside the charging port. The rubber sealing plug 29 is fixedly connected to the front side of the rectangular sleeve 7 by a rubber connecting rope.

[0033] Those skilled in the art will understand that the battery 27 inside the second rectangular cavity 10 is electrically connected to the drive motor 1201 to provide it with power; the control switch 28 on the front side of the rectangular sleeve 7 is electrically connected to the drive motor 1201 and can control the start, stop and forward / reverse rotation of the drive motor 1201; the charging port on the front side of the rectangular sleeve 7, which is electrically connected to the battery 27, is used to charge the battery 27, and the rubber sealing plug 29 inside the charging port is fixed to the front side of the rectangular sleeve 7 by a rubber connecting rope to prevent dust and rainwater from entering the charging port.

[0034] The battery 27 provides power, freeing the device from the limitations of an external power cord and adapting to complex construction site environments; the control switch 28 facilitates the operation of the drive motor 1201 for height adjustment; and the rubber sealing plug 29 effectively protects the charging port, extending the service life of the battery 27 and the charging interface.

[0035] Example 6 Furthermore, a first square ring plate 30 is fixedly connected to the outer wall of the rectangular sleeve 7 near the top, and a second square ring plate 31 is fixedly connected to the outer wall of the rectangular sleeve 7 near the bottom. Four reinforcing vertical rods 32 are evenly distributed between the first square ring plate 30 and the second square ring plate 31. A third square ring plate 33 is slidably connected to the four reinforcing vertical rods 32 through a first linear bearing. Auxiliary support plates 34 are fixedly connected to the bottom of the left and right ends of the mounting plate 14 and the third square ring plate 33.

[0036] Those skilled in the art will understand that the first square ring plate 30 and the second square ring plate 31 on the outer wall of the rectangular sleeve 7 are close to the top and bottom respectively, and the four reinforcing vertical rods 32 evenly distributed between them form a stable frame structure. The third square ring plate 33 is slidably connected to the four reinforcing vertical rods 32 through the first linear bearing and can slide up and down along the reinforcing vertical rods 32. The auxiliary support plates 34 between the bottom of the left and right ends of the mounting plate 14 and the third square ring plate 33 transfer part of the load of the mounting plate 14 to the third square ring plate 33 and drive the third square ring plate 33 to rise and fall synchronously with the mounting plate 14.

[0037] The reinforced vertical rod 32 and the third-dimensional ring plate 33 cooperate to form an auxiliary support structure. The auxiliary support plate 34 disperses the load borne by the mounting plate 14, which significantly improves the overall anti-tilting performance and structural stability of the device. It is especially suitable for heavy-load support scenarios of large tensioned beam roof structures.

[0038] Example 7 Furthermore, several supporting balls 35 are provided at the bottom of both the left and right ends of the rotating plate 17, and an annular groove 36 adapted to the supporting balls 35 is provided on the top of the support plate 16.

[0039] Those skilled in the art will understand that the several support balls 35 provided at the bottom of the left and right ends of the rotating plate 17 are adapted to the annular groove 36 on the top of the support disk 16, and the support balls 35 can roll in the annular groove 36; when the rotating plate 17 rotates around the central axis of the support disk 16, the support balls 35 roll along the annular groove 36, and play an auxiliary support role for the rotating plate 17.

[0040] The cooperation between the supporting ball bearing 35 and the annular groove 36 reduces the frictional resistance when the rotating plate 17 rotates, making the angle adjustment smoother and easier. At the same time, it disperses the vertical load borne by the rotating plate 17, preventing damage to the rotating connection due to excessive force and extending the service life of the components.

[0041] Example 8 Furthermore, a first flexible pad 37 is provided inside the V-groove 19, a second flexible pad 38 is provided on the clamping surface of the inverted V-shaped plate 20, and mounting holes 6 are provided at the four corners of the base 5.

[0042] Those skilled in the art will understand that the first flexible pad 37 in the V-groove 19 and the second flexible pad 38 on the clamping surface of the inverted V-shaped plate 20 are made of elastic materials such as rubber. When clamping the tensioned beam component, the flexible pad can deform to fit the surface of the component. The mounting holes 6 at the four corners of the base 5 can be used to fix the base 5 to the ground or other foundation structure through bolts or other connecting parts.

[0043] The first flexible pad 37 and the second flexible pad 38 can buffer the clamping force and prevent scratches or deformation on the surface of the tensioned beam component due to rigid contact. At the same time, they increase the friction of the clamping surface and improve the clamping stability. The mounting hole 6 of the base 5 ensures the overall stability of the device installation and prevents the device from shifting during construction.

[0044] Example 9 Furthermore, L-shaped brackets 39 are fixedly connected to both the front and rear sides of the rotating plate 17. An arc-shaped plate 40 adapted to the support plate 16 is fixedly connected to the bottom of the vertical plate of the L-shaped bracket 39. A rubber pad 41 that fits tightly against the support plate 16 is provided on the inner arc surface of the arc plate 40.

[0045] Those skilled in the art will understand that the L-shaped brackets 39 fixed on the front and rear sides of the rotating plate 17 extend downwards, and the arc-shaped plate 40 at the bottom of its vertical plate is adapted to the shape of the support plate 16. The rubber pad 41 on the inner arc surface of the arc plate 40 is in close contact with the surface of the support plate 16, and the friction between the rubber pad 41 and the support plate 16 restricts the unnecessary rotation of the rotating plate 17.

[0046] After the rotating plate 17 is adjusted to the target angle, the tight fit between the rubber pad 41 and the support plate 16 generates sufficient friction to prevent the rotating plate 17 from rotating unexpectedly, ensuring the stability of the support angle and further improving the support reliability of the device.

[0047] Example 10 Furthermore, the horizontal adjustment mechanism 15 includes a second lead screw 1501 rotatably connected in the mounting groove and horizontally arranged. Two guide crossbars 1502 parallel to the second lead screw 1501 are fixedly connected in the mounting groove. The two guide crossbars 1502 are symmetrically distributed on both sides of the second lead screw 1501. The left end of the second lead screw 1501 extends to the outside of the mounting plate 14 and is fixedly connected to a knob 1503. A movable seat 1504 is threaded onto the second lead screw 1501. Both guide crossbars 1502 are slidably connected to the movable seat 1504 through a second linear bearing. Telescopic protective sleeves 1505 are provided between both sides of the movable seat 1504 and the side wall of the mounting groove. The second lead screw 1501 and the two guide crossbars 1502 are all located within the two telescopic protective sleeves 1505.

[0048] Those skilled in the art will understand that the second lead screw 1501 of the horizontal adjustment mechanism 15 is rotatably connected in the mounting groove of the mounting plate 14, with its left end extending to the outside of the mounting plate 14 and connected to the knob 1503. Two guide crossbars 1502, parallel to the second lead screw 1501, are symmetrically distributed on both sides of the mounting groove. The movable seat 1504, threaded onto the second lead screw 1501, is slidably connected to the two guide crossbars 1502 via a second linear bearing. Rotating the knob 1503 can drive the second lead screw 1501 to rotate, causing the movable seat 1504 to slide horizontally along the guide crossbars 1502. The telescopic protective sleeves 1505 between the two sides of the movable seat 1504 and the sidewall of the mounting groove extend and retract with the movement of the movable seat 1504, enclosing the second lead screw 1501 and the guide crossbars 1502.

[0049] The horizontal position of the support plate 16 can be precisely adjusted by knob 1503, which is easy to operate and has high adjustment accuracy; guide bar 1502 ensures the stability of sliding of moving seat 1504, and telescopic protective sleeve 1505 effectively prevents dust and debris from entering the transmission components, avoids the adjustment function from being affected by foreign objects, and extends the service life of horizontal adjustment mechanism 15.

[0050] The working principle and usage procedure of this device are as follows: First, fix the support device body 2 to the required construction position using bolts through the mounting holes 6 at the four corners of the base 5. Place the connecting frame 3 of the frame body 1 above the support device body 2 accordingly. When the support height needs to be adjusted, operate the control switch 28 on the front side of the rectangular sleeve 7 to start the drive motor 1201 in the second rectangular cavity 10. The drive motor 1201 drives the worm gear 1203 to rotate. The worm gear 1203 meshes with the worm wheel 1202 at the bottom of the first lead screw 11, causing the first lead screw 11 to rotate on the partition plate 8. This drives the rectangular lifting rod 13 to slide up and down in the first rectangular cavity 9, raising and lowering the mounting plate 14 to the target height. At this time, the worm gear and worm wheel self-lock. The features ensure a fixed height, while the mounting plate 14, through the auxiliary support plate 34, drives the third square ring plate 33 to slide synchronously along the reinforcing vertical bar 32 between the first square ring plate 30 and the second square ring plate 31, enhancing the overall anti-tilting performance. When adjusting the horizontal position, rotating the knob 1503 of the horizontal adjustment mechanism 15 causes the second lead screw 1501 to rotate, and the moving seat 1504 slides horizontally along the two guide crossbars 1502, driving the support plate 16 to move. The telescopic protective sleeves 1505 on both sides of the moving seat 1504 extend and retract accordingly, protecting the second lead screw 1501 and the guide crossbars 1502 from impurities. When adjusting the support angle, rotating the rotating plate 17 causes several support balls 35 at its bottom left and right ends to slide along the top of the support plate 16. The annular groove 36 of the rotating plate 17 rolls, reducing friction. Simultaneously, the L-shaped supports 39 on both sides of the rotating plate 17 drive the arc plate 40 to rotate synchronously. The rubber pad 41 on the inner arc surface of the arc plate 40 is tightly fitted with the support plate 16, fixing the angle of the rotating plate 17 through friction. When placing the tensioned beam component, the component is placed into the V-shaped groove 19 at the top of the two upright plates 18, and the inverted V-shaped plate 20 is placed on top. The through holes at both ends of the inverted V-shaped plate 20 are fitted into the screws 21 at the top of the rotating plate 17, and the nuts 22 are tightened. The first flexible pad 37 in the V-shaped groove 19 and the second flexible pad 38 on the clamping surface of the inverted V-shaped plate 20 buffer the pressure, protecting the component surface and enhancing clamping stability. When it is necessary to inspect the internal components of the second rectangular cavity 10, the rotating lock... The rotating plate 2602 of the fixed component 26 causes the locking pin 2604 inside the cylindrical shell 2603 to disengage from the locking groove 2605 on the outside of the inspection door 23 and retract, compressing the spring 2606, and opening the inspection door 23 through the handle 24; after maintenance is completed, the inspection door 23 is closed, the rotating plate 2602 is rotated, and the locking pin 2604 slides along the guide slope on the outside of the free end of the inspection door 23 under the action of the spring 2606, and finally locks into the locking groove 2605. The sealing gasket 25 on the inside of the inspection door 23 ensures the sealing after closure; if the battery 27 in the second rectangular cavity 10 has insufficient power, the rubber sealing plug 29 in the charging port on the front side of the rectangular sleeve 7 can be opened for charging. After charging is completed, the rubber sealing plug 29 can be reset.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A pre-cambering support device for a beam string roof structure, comprising a frame body (1), characterized in that, The frame body (1) is composed of a plurality of connecting frames (3) and a plurality of supporting frames (4) connected with each other, the connecting frames (3) are uniformly distributed with a plurality of supporting device bodies (2) for supporting and fixing, the supporting device body (2) comprises a base (5), the top center of the base (5) is fixedly connected with a rectangular sleeve (7), the inner side of the rectangular sleeve (7) is fixedly connected with a partition plate (8) close to the bottom, the partition plate (8) divides the inner cavity of the rectangular sleeve (7) into a first rectangular cavity (9) and a second rectangular cavity (10) distributed in upper and lower positions, the top center of the partition plate (8) is rotatably connected with a first lead screw (11), the bottom end of the first lead screw (11) extends into the second rectangular cavity (10) and is connected with a self-locking driving unit (12), a rectangular lifting rod (13) matched with the first lead screw (11) is slidably arranged in the first rectangular cavity (9), the rectangular lifting rod (13) is threadedly connected with the first lead screw (11), the top end of the rectangular lifting rod (13) is fixedly connected with a mounting plate (14), the top of the mounting plate (14) is provided with a mounting groove, the mounting groove is connected with a supporting disc (16) through a horizontal adjusting mechanism (15), the top center of the supporting disc (16) is rotatably connected with a rotating plate (17), the top of the rotating plate (17) is fixedly connected with two vertical plates (18) arranged at intervals, the top of each vertical plate (18) is provided with a V-shaped groove (19), a reverse V-shaped plate (20) is arranged in the gap between the two vertical plates (18), the two ends of the reverse V-shaped plate (20) are integrally formed with outer edges, a through hole is formed in each outer edge, the rotating plate (17) is fixedly connected with a screw rod (21) corresponding to each through hole, the screw rod (21) is threadedly connected with a nut (22) located above the outer edge.

2. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, A maintenance opening is formed in the left side of the rectangular sleeve (7) and communicates with the second rectangular cavity (10), a maintenance door (23) matched with the maintenance opening is hingedly connected to the left side of the rectangular sleeve (7), a handle (24) is fixedly connected to the outer side of the free end of the maintenance door (23), a sealing gasket (25) is arranged on the inner side of the maintenance door (23), a plurality of locking assemblies (26) are arranged on the left side of the rectangular sleeve (7) and lock the free end of the maintenance door (23).

3. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 2, characterized in that, The locking assembly (26) includes a fixed post (2601) fixedly connected to the left side of the rectangular sleeve (7). The outer end of the fixed post (2601) is rotatably connected to a rotating plate (2602). The outer side of the free end of the rotating plate (2602) is fixedly connected to a cylindrical shell (2603). A locking post (2604) is slidably arranged inside the cylindrical shell (2603). The outer side of the inspection door (23) is provided with a locking groove (2605) that cooperates with the locking post (2604). The outer end of the locking post (2604) and the locking groove (2605) are both semi-circular. A guide slope is provided at the outer corner of the free end of the inspection door (23) to facilitate squeezing the locking post (2604). A spring (2606) is provided inside the cylindrical shell (2603). The two ends of the spring (2606) are fixedly connected to the inner wall of the cylindrical shell (2603) and the locking post (2604) respectively.

4. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, The self-locking drive unit (12) includes a drive motor (1201) fixedly connected to the rear side wall of the second rectangular cavity (10), a worm gear (1202) located inside the second rectangular cavity (10) fixedly connected to the bottom end of the first lead screw (11), a worm (1203) meshing with the worm gear (1202) fixedly connected to the output end of the drive motor (1201), and the other end of the worm (1203) rotatably connected to the front side wall of the second rectangular cavity (10).

5. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 4, wherein, The second rectangular cavity (10) is also provided with a battery (27) electrically connected to the drive motor (1201). The front side of the rectangular sleeve (7) is provided with a control switch (28) electrically connected to the drive motor (1201). The front side of the rectangular sleeve (7) is also provided with a charging port electrically connected to the battery (27). A rubber sealing plug (29) is provided in the charging port. The rubber sealing plug (29) is fixedly connected to the front side of the rectangular sleeve (7) by a rubber connecting rope.

6. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, wherein, A first square ring plate (30) is fixedly connected to the outer wall of the rectangular sleeve (7) near the top. A second square ring plate (31) is fixedly connected to the outer wall of the rectangular sleeve (7) near the bottom. Four reinforcing vertical rods (32) are evenly distributed between the first square ring plate (30) and the second square ring plate (31). A third square ring plate (33) is slidably connected to the four reinforcing vertical rods (32) through a first linear bearing. Auxiliary support plates (34) are fixedly connected between the bottom of the left and right ends of the mounting plate (14) and the third square ring plate (33).

7. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, The bottom of both ends of the rotating plate (17) is provided with a number of supporting balls (35), and the top of the support plate (16) is provided with an annular groove (36) that matches the supporting balls (35).

8. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, The V-groove (19) is provided with a first flexible pad (37), the clamping surface of the inverted V-shaped plate (20) is provided with a second flexible pad (38), and the four corners of the base (5) are provided with mounting holes (6).

9. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, The L-shaped support (39) is fixedly connected with the rotating plate (17) and has an arc-shaped plate (40) fixedly connected with the bottom of the vertical plate and matched with the supporting disc (16), and the inner arc surface of the arc-shaped plate (40) is provided with a rubber pad (41) closely combined with the supporting disc (16).

10. The pre-cambering support device for beam-on-elastic foundation roof structure according to claim 1, characterized in that, The horizontal adjusting mechanism (15) comprises a second screw rod (1501) horizontally arranged and rotatably connected in the mounting groove, two guide cross rods (1502) parallel to the second screw rod (1501) and fixedly connected in the mounting groove, the two guide cross rods (1502) being symmetrically arranged on the two sides of the second screw rod (1501), the left end of the second screw rod (1501) extending to the outside of the mounting plate (14) and being fixedly connected with a knob (1503), a moving seat (1504) being threadedly connected with the second screw rod (1501), the two guide cross rods (1502) being slidably connected with the moving seat (1504) through second linear bearings, and elastic sleeves (1505) being arranged between the two sides of the moving seat (1504) and the side walls of the mounting groove.

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