A prestress generating device for building boards

Abstract

The present invention belongs to the technical field of construction engineering equipment, and in particular to a prestress generating device for building boards. Aiming at the problem that the existing board prestress tensioning device is relatively large in volume and cannot be moved, which is inconvenient to use during operation, the following solution is proposed. It includes fixing bodies fixed at both ends of the board. Fixed blocks are welded to both the top and bottom of the fixing body. A rotating rod is rotatably connected to the middle of the fixed block. Rotating wheels are provided at both the top and bottom of the board. A third fixing rod is welded to one side of the rotating wheel. By rotating the threaded rod in the present invention, the first moving plate moves away from the board, and the rotating rod rotates. The third fixing rod is pressed to clamp the rotating wheel and the board. At the same time, the second moving plate drives the rotating wheel to rotate through the rack and gear, and the distance between the rotating wheels decreases, further clamping the board. The rotating shaft drives the first fixing rod and the second fixing rod to approach each other, and the rotating wheels move away from each other. The rotating wheels stretch the clamped board, increasing the strength of the board.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering equipment, and particularly relates to a prestress generating device for building boards. Background Art

[0002] The prestress of the board is a way to improve the service performance of the board structure. During construction, the strength of the board is further enhanced by prestress tensioning to improve the engineering quality. Due to the low strength of the board itself, the existing board prestress tensioning devices are relatively large in size and inconvenient to use.

[0003] After retrieval, a patent with the Chinese patent application number CN201720857195.0 discloses a prestress tensioning device for prefabricated boards, including a base, a baffle, and a tensioning mechanism. The base is in the shape of a cuboid, and both the baffle and the tensioning mechanism are arranged above the base. There is a groove on the upper surface of the base; the baffle is inserted into the groove and consists of an upper baffle and a lower baffle; the tensioning mechanism includes a hydraulic telescopic rod, a fixing plate, and a steel bar. A moving plate is provided at the end of the hydraulic telescopic rod. Cutting strips are provided on both the moving plate and the fixing plate. The steel bar is connected between the fixing plate and the moving plate and passes through the through hole on the baffle. Limiting discs are provided at both ends of the steel bar. The following deficiencies exist in a prestress tensioning device for prefabricated boards in the above patent: This device cannot be moved and is relatively large in size, which is inconvenient to use at the construction site. Summary of the Invention

[0004] Based on the technical problems that the existing board prestress tensioning devices are relatively large in size, cannot be moved, and are inconvenient to use, the present invention proposes a prestress generating device for building boards.

[0005] A prestress generating device for building boards proposed by the present invention includes fixing bodies fixed at both ends of the board. Fixed blocks are welded to the top and bottom of the fixing body. A rotating rod is rotatably connected to the middle of the fixed block. Rotating wheels are provided at the top and bottom of the board. A third fixed rod is welded to one side of the rotating wheel. A fixed shaft is welded to the other side of the rotating wheel. The other end of the fixed shaft is key-connected to a gear. A first moving plate is provided on one side of the fixing body. A threaded through hole is opened in the middle of the first moving plate. A threaded rod is provided at the threaded through hole of the first moving plate. Second moving plates are welded to the top and bottom on one side of the first moving plate. First grooves are opened on the sides of the two second moving plates away from each other. A rack is provided at the first groove of the second moving plate. The rack meshes with the gear. A rotating shaft is rotatably connected to one side of the rotating wheel. A first fixed rod and a second fixed rod are welded to one side of the rotating shaft. A first fixing plate is welded to one end of the first fixed rod. A second fixing plate is welded to one end of the second fixed rod. A second groove is opened at one end of the first fixing plate. The second fixing plate is located inside the second groove of the first fixing plate.

[0006] Preferably, a plurality of rubber protrusions are provided on the outer wall of the rotating wheel.

[0007] Preferably, one end of the rotating rod is arc-shaped, a limiting block is welded to the top end of the third fixing rod, a third groove is formed at the top end of the limiting block, and the other end of the rotating rod is located inside the third groove.

[0008] Preferably, a handle is welded to one end of the threaded rod, and anti-slip threads are engraved on the outer wall of the handle.

[0009] Preferably, clamping plates are provided at both the top end and the bottom end of the second fixing plate, clamping grooves are formed on the sides of the clamping plates close to each other, and clamping blocks are welded to both the top end and the bottom end of the second fixing plate, and the clamping blocks are adapted to the clamping grooves.

[0010] Preferably, fixing rings are provided on both sides of the clamping plate, circular through holes are formed on one side of the fixing rings, and fixing bolts are provided at the circular through holes of the fixing rings.

[0011] Preferably, fixing sleeves and fourth fixing rods are respectively welded to the ends of the two third fixing rods close to each other, threaded grooves are formed on the outer wall of the fourth fixing rod, the fourth fixing rod is located inside the fixing sleeve, and a threaded sleeve is rotatably connected to one end of the fixing sleeve.

[0012] Preferably, a cross-shaped sliding groove is formed on the inner wall of the fixing sleeve, a cross-shaped sliding block is welded to one end of the fourth fixing rod, and the cross-shaped sliding block is adapted to the cross-shaped sliding groove.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By providing the threaded rod, the first moving plate and the rotating rod with one end being arc-shaped, rotating the two threaded rods, the threaded rods pass through the threaded through holes on the first moving plate, so that the first moving plate moves away from the plate, the first moving plate contacts the arc-shaped end of the rotating rod and rotates it, the other end of the rotating rod contacts the limiting block, and the limiting block presses the third fixing rod, and the third fixing rod clamps the rotating wheel plate;

[0015] 2. By providing the gear, the rack, the second moving plate and the rotating wheel with an increasingly larger outer diameter, while the first moving plate moves, the second moving plate also moves together, the second moving plate drives the rack to move, the rack drives the rotating wheel to rotate through the gear, the rotation of the rotating wheel increases the radius of its contact with the plate, and the distance between the rotating wheels decreases, further clamping the plate;

[0016] 3. By setting the first fixing rod, the second fixing rod, the first fixing plate, the second fixing plate and the clamping plate, while the rotating wheel rotates, the rotating wheel drives the rotating shaft to move, and the rotating shaft drives the first fixing rod and the second fixing rod to approach each other. Under the interaction of the first fixing plate, the second fixing plate and the clamping plate, the rotating wheels move away from each other, and the rotating wheels stretch the clamped plate to increase the strength of the plate.

[0017] 4. By setting the clamping block, the first fixing plate and the second fixing plate, the cooperation between the clamping block and the clamping groove of the clamping plate enables the second fixing plate to extend to different lengths inside the second groove of the first fixing plate, facilitating adaptation to plates of different lengths. At the same time, the fixing bolts and the fixing rings can fix the two clamping plates close to each other, ensuring that the clamping plates will not fall off during the use of the device.

[0018] 5. By setting the threaded sleeve, the fourth fixing rod, the cross-shaped sliding groove and the cross-shaped sliding block, the rotation of the threaded sleeve can change the length of the fourth fixing rod, causing the distance between the rotating wheels to change, so as to adapt to plates of different widths. At the same time, through the cooperation between the cross-shaped sliding block and the cross-shaped sliding groove, the fourth fixing rod can slide inside the fixing sleeve and cannot rotate, ensuring that the rotation angles of the rotating wheels are always the same, enhancing the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a front structural schematic diagram of a prestress generating device for building plates proposed in Embodiment 1;

[0020] Figure 2 FIG. Figure 1 is an enlarged structural schematic diagram of part A of

[0021] Figure 3 FIG. is a side structural sectional view of a prestress generating device for building plates proposed in Embodiment 1;

[0022] Figure 4 FIG. is a front view of the clamping plate structure of a prestress generating device for building plates proposed in Embodiment 1;

[0023] Figure 5 FIG. is a front view of the rotating wheel structure of a prestress generating device for building plates proposed in Embodiment 1;

[0024] Figure 6 FIG. is a side structural sectional view of a prestress generating device for building plates proposed in Embodiment 2;

[0025] Figure 7 FIG. is a front view of the fixing sleeve structure of a prestress generating device for building plates proposed in Embodiment 2.

[0026] In the figure: 1 plate material, 2 rotating wheel, 3 fixed shaft, 4 gear, 5 rack, 6 fixed block, 7 rotating rod, 8 fixed body, 9 first moving plate, 10 threaded rod, 11 handle, 12 second moving plate, 13 connecting rod, 14 first fixed rod, 15 first fixing plate, 16 second fixing plate, 1601 clamping block, 17 clamping plate, 18 fixing ring, 19 fixing bolt, 20 second fixed rod, 21 third fixed rod, 22 limiting block, 23 fixing sleeve, 24 threaded sleeve, 25 fourth fixed rod, 26 rotating shaft, 27 cross slider. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] Embodiment 1

[0029] Refer to Figures 1-5, A prestress generating device for building boards, including fixing bodies 8 fixed at both ends of the board 1. Fixed blocks 6 are welded to the top and bottom of the fixing body 8. A rotating rod 7 is rotatably connected to the middle of the fixed block 6. Rotating wheels 2 are provided at the top and bottom of the board 1. A third fixing rod 21 is welded to one side of the rotating wheel 2. A fixing shaft 3 is welded to the other side of the rotating wheel 2. The other end of the fixing shaft 3 is connected with a gear 4 by a key. A first moving plate 9 is provided on one side of the fixing body 8. A threaded through hole is opened in the middle of the first moving plate 9. A threaded rod 10 is provided at the threaded through hole of the first moving plate 9. Second moving plates 12 are welded to the top and bottom of one side of the first moving plate 9. First grooves are opened on the sides of the two second moving plates 12 away from each other. A rack 5 is provided at the first groove of the second moving plate 12. The rack 5 meshes with the gear 4. One side of the rotating wheel 2 is rotatably connected to a rotating shaft 26. A first fixing rod 14 and a second fixing rod 20 are welded to one side of the rotating shaft 26. A first fixing plate 15 is welded to one end of the first fixing rod 14. A second fixing plate 16 is welded to one end of the second fixing rod 20. A second groove is opened at one end of the first fixing plate 15. The second fixing plate 16 is inside the second groove of the first fixing plate 15. When in use, rotate the two threaded rods 10. The threaded rods 10 pass through the threaded through holes on the first moving plate 9, so that the first moving plate 9 moves away from the board 1. The first moving plate 9 contacts the rotating rod 7 and makes it rotate. The other end of the rotating rod 7 contacts the third fixing rod 21. The third fixing rod 21 clamps the rotating wheel 2 and the board 1. While the first moving plate 9 moves, the second moving plate 12 moves together with it. The second moving plate 12 drives the rack 5 to move. The rack 5 drives the rotating wheel 2 to rotate through the gear 4. The rotation of the rotating wheel 2 increases the radius of its contact with the board 1 and decreases the distance between the rotating wheels 2, further clamping the board 1. While the rotating wheel 2 rotates, the rotating wheel 2 drives the rotating shaft 26 to move. The rotating shaft 26 drives the first fixing rod 14 and the second fixing rod 20 to approach each other. Under the interaction of the first fixing plate 15 and the second fixing plate 16, the rotating wheels 2 move away from each other. The rotating wheels 2 stretch the clamped board 1, increasing the strength of the board 1.

[0030] In the present invention, a plurality of rubber protrusions are provided on the outer wall of the rotating wheel 2, increasing the friction of the rotating wheel 2 and facilitating clamping of the board 1.

[0031] Among them, one end of the rotating rod 7 is arc-shaped, facilitating contact with the first moving plate 9 and rotating through the first moving plate 9. A limiting block 22 is welded to the top of the third fixing rod 21. A third groove is opened at the top of the limiting block 22. The other end of the rotating rod 7 is inside the third groove. The third groove can make the rotating rod 7 always be in the same plane during rotation.

[0032] One end of the threaded rod 10 is welded with a handle 11. The outer wall of the handle 11 is engraved with anti-slip threads. The handle 11 facilitates the rotation of the threaded rod 10 to stretch the plate 1.

[0033] Both the top and bottom of the second fixing plate 16 are provided with clamping plates 17. Slots are formed on the sides of the clamping plates 17 that face each other. Both the top and bottom of the second fixing plate 16 are welded with clamping blocks 1601. The clamping blocks 1601 are adapted to the slots. Through the cooperation of the clamping blocks 1601 and the slots, the second fixing plate 16 can extend to different lengths inside the second groove of the first fixing plate 15, facilitating adaptation to plates 1 of different lengths.

[0034] Both sides of the clamping plate 17 are provided with fixing rings 18. A circular through-hole is formed on one side of the fixing ring 18. A fixing bolt 19 is provided at the circular through-hole of the fixing ring 18. The fixing bolt 19 and the fixing ring 18 can fix the two clamping plates 17 to be close to each other, ensuring that the clamping plates 17 will not fall off during the use of the device.

[0035] One end of each of the two third fixing rods 21 that are close to each other is welded with a fixing sleeve 23 and a fourth fixing rod 25 respectively. Threaded grooves are formed on the outer wall of the fourth fixing rod 25. The fourth fixing rod 25 is located inside the fixing sleeve 23. One end of the fixing sleeve 23 is rotatably connected with a threaded sleeve 24. By rotating the threaded sleeve 24, the length of the fourth fixing rod 25 can be changed, changing the distance between the rotating wheels 2, so as to adapt to plates 1 of different widths.

[0036] During use, the two threaded rods 10 are rotated through the handle 11. The threaded rods 10 pass through the threaded through-holes on the first moving plate 9, causing the first moving plate 9 to move away from the plate 1. The first moving plate 9 contacts the arc-shaped end of the rotating rod 7 and rotates it. The other end of the rotating rod 7 contacts the limiting block 22. The limiting block 22 presses the third fixing rod 21. The third fixing rod 21 clamps the plate 1 with the rotating wheels 2. While the first moving plate 9 is moving, the second moving plate 12 also moves together. The second moving plate 12 drives the rack 5 to move. The rack 5 drives the rotating wheels 2 to rotate through the gear 4. The rotation of the rotating wheels 2 increases the radius of their contact with the plate 1, and the distance between the rotating wheels 2 decreases, further clamping the plate 1. While the rotating wheels 2 are rotating, the rotating wheels 2 drive the rotating shaft 26 to move. The rotating shaft 26 drives the first fixing rod 14 and the second fixing rod 20 to approach each other. Under the interaction of the first fixing plate 15, the second fixing plate 16 and the clamping plates 17, the rotating wheels 2 move away from each other. The rotating wheels 2 stretch the clamped plate 1, increasing the strength of the plate 1;

[0037] Through the cooperation of the clamping block 1601 and the card slot of the card board 17, the second fixing plate 16 can extend to different lengths inside the second groove of the first fixing plate 15, facilitating the adaptation to plates 1 of different lengths. At the same time, the fixing bolts 19 and the fixing rings 18 can make the two card boards 17 close and fixed, ensuring that the card board 17 will not fall off during the use of the device;

[0038] By rotating the threaded sleeve 24, the length of the fourth fixing rod 25 can be changed, changing the distance between the rotating wheels 2 so as to adapt to plates 1 of different widths.

[0039] Embodiment 2

[0040] Refer to Figures 6-7 , a prestress generating device for building plates. Compared with Embodiment 1, in order to increase the stability of the device, a cross-shaped sliding groove is provided on the inner wall of the fixing sleeve 23. One end of the fourth fixing rod 25 is welded with a cross-shaped sliding block 27, and the cross-shaped sliding block 27 is adapted to the cross-shaped sliding groove. Through the cooperation of the cross-shaped sliding block 27 and the cross-shaped sliding groove, the fourth fixing rod 25 can slide inside the fixing sleeve 23 and cannot rotate, ensuring that the rotation angles of the rotating wheels 2 are always the same, enhancing the stability during the use of the device.

[0041] During use, by rotating the two threaded rods 10 through the handle 11, the threaded rods 10 pass through the threaded through holes on the first moving plate 9, causing the first moving plate 9 to move away from the plate 1. The first moving plate 9 contacts the arc-shaped end of the rotating rod 7 and rotates it. The other end of the rotating rod 7 contacts the limit block 22, and the limit block 22 presses the third fixing rod 21. The third fixing rod 21 clamps the plate 1 with the rotating wheel 2. While the first moving plate 9 is moving, the second moving plate 12 also moves together. The second moving plate 12 drives the rack 5 to move, and the rack 5 drives the rotating wheel 2 to rotate through the gear 4. The rotation of the rotating wheel 2 increases the radius of its contact with the plate 1, and the distance between the rotating wheels 2 decreases, further clamping the plate 1. While the rotating wheel 2 is rotating, the rotating wheel 2 drives the rotating shaft 26 to move, and the rotating shaft 26 drives the first fixing rod 14 and the second fixing rod 20 to approach each other. Under the interaction of the first fixing plate 15, the second fixing plate 16 and the card board 17, the rotating wheels 2 move away from each other, and the rotating wheels 2 stretch the clamped plate 1, increasing the strength of the plate 1;

[0042] Through the cooperation of the clamping block 1601 and the card slot of the card board 17, the second fixing plate 16 can extend to different lengths inside the second groove of the first fixing plate 15, facilitating the adaptation to plates 1 of different lengths. At the same time, the fixing bolts 19 and the fixing rings 18 can make the two card boards 17 close and fixed, ensuring that the card board 17 will not fall off during the use of the device;

[0043] By rotating the threaded sleeve 24, the length of the fourth fixing rod 25 can be changed, so as to change the distance between the rotating wheels 2, so as to adapt to plates 1 of different widths. Through the cooperation of the cross slider 27 and the cross chute, the fourth fixing rod 25 can slide inside the fixed sleeve 23 and cannot rotate, ensuring that the rotation angles of the rotating wheels 2 are always the same, and enhancing the stability of the device during use.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A prestress generating device for building boards, comprising fixing bodies (8) fixed at both ends of a board (1), characterized in that, The top and bottom of the fixing body (8) are both provided with fixing blocks (6), a rotating rod (7) is provided in the middle of the fixing block (6), the top and bottom of both ends of the plate (1) are provided with rotating wheels (2), a third fixing rod (21) is provided on one side of the rotating wheel (2), a fixing shaft (3) is provided on the other side of the rotating wheel (2), a gear (4) is provided at the other end of the fixing shaft (3), a first moving plate (9) is provided on one side of the fixing body (8), a threaded through hole is formed in the middle of the first moving plate (9), a threaded rod (10) is provided at the threaded through hole of the first moving plate (9), the top and bottom of one side of the first moving plate (9) are both provided with second moving plates (12), first grooves are formed on the sides of the two second moving plates (12) away from each other, a rack (5) is provided at the first groove of the second moving plate (12), the rack (5) meshes with the gear (4), a rotating shaft (26) is eccentrically provided on one side of the rotating wheel (2), a first fixing rod (14) is provided on one side of one end of the rotating shaft (26), a second fixing rod (20) is provided on one side of the other end of the rotating shaft (26), a first fixing plate (15) is provided at one end of the first fixing rod (14), a second fixing plate (16) is provided at one end of the second fixing rod (20), a second groove is formed at one end of the first fixing plate (15), and the second fixing plate (16) is located inside the second groove of the first fixing plate (15); Rotate the two threaded rods (10), the threaded rods (10) pass through the threaded through holes on the first moving plate (9) to make the first moving plate (9) away from the plate (1), the first moving plate (9) contacts the rotating rod (7) and rotates it, the other end of the rotating rod (7) contacts the third fixing rod (21), and the third fixing rod (21) clamps the rotating wheel (2) and the plate (1). While the first moving plate (9) moves, the second moving plate (12) moves together with it, the second moving plate (12) drives the rack (5) to move, the rack (5) drives the rotating wheel (2) to rotate through the gear (4). While the rotating wheel (2) rotates, the rotating wheel (2) drives the rotating shaft (26) to move, the rotating shaft (26) drives the first fixing rod (14) and the second fixing rod (20) to approach each other. Under the interaction of the first fixing plate (15) and the second fixing plate (16), the rotating wheels (2) move away from each other, and the rotating wheels (2) stretch the clamped plate (1).

2. The prestress generating device for building plates according to claim 1, wherein Several rubber protrusions are provided on the outer wall of the rotating wheel (2).

3. The prestress generating device for building plates according to claim 1, wherein One end of the rotating rod (7) is arc-shaped, a limiting block (22) is provided at the top of the third fixing rod (21), a third groove is formed at the top of the limiting block (22), and the other end of the rotating rod (7) is located inside the third groove.

4. The prestress generating device for building plates according to claim 1, wherein One end of the threaded rod (10) is provided with a handle (11), and anti-slip threads are engraved on the outer wall of the handle (11).

5. The prestress generating device for building boards according to claim 1, wherein Clamping plates (17) are provided at both the top end and the bottom end of the second fixing plate (16). Slots are formed on the sides of the clamping plates (17) close to each other. Clamping blocks (1601) are provided at both the top end and the bottom end of the second fixing plate (16), and the clamping blocks (1601) are adapted to the slots.

6. The prestress generating device for building boards according to claim 5, wherein Fixing rings (18) are provided on both sides of the clamping plate (17). Circular through holes are formed on one side of the fixing rings (18), and fixing bolts (19) are provided at the circular through holes of the fixing rings (18).

7. The prestress generating device for building boards according to claim 1, wherein Fixing sleeves (23) and fourth fixing rods (25) are respectively provided at the ends of the two third fixing rods (21) close to each other. Threaded grooves are formed on the outer wall of the fourth fixing rod (25). The fourth fixing rod (25) is located inside the fixing sleeve (23), and a threaded sleeve (24) is provided at one end of the fixing sleeve (23).

8. The prestress generating device for building boards according to claim 7, wherein A cross-shaped sliding groove is formed on the inner wall of the fixing sleeve (23). A cross-shaped sliding block (27) is provided at one end of the fourth fixing rod (25), and the cross-shaped sliding block (27) is adapted to the cross-shaped sliding groove.

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