Tie-rod arch suspender tensioning device

Abstract

This application discloses a tensioning device for tie-arch suspension rods, belonging to the field of bridge suspension rod tensioning technology. It includes a support fixedly installed on the arch rib and a lifting structure for tensioning the suspension rods. A storage groove is provided on the arch rib, and one end of the suspension rod passes through the inner wall of the storage groove. A clamping groove is provided on the suspension rod. The lifting structure includes a support plate, a first lead screw, a drive assembly, and two clamping rods. A sliding groove is provided on the support plate, and both ends of the first lead screw are rotatably connected to the opposite inner walls of the sliding groove. The clamping rods are threadedly connected to the first lead screw. The drive assembly drives the first lead screw to rotate. A second lead screw is rotatably mounted on the support, and the support plate is threadedly connected to the second lead screw. A guide rod is fixedly mounted on the support, and the support plate slides on the guide rod. The lifting structure also includes a transmission assembly, and the drive assembly drives the second lead screw to rotate through the transmission assembly. This application simplifies the equipment installation and disassembly steps, thereby increasing work efficiency and shortening the construction period.

Description

Technical Field

[0001] This application relates to the field of bridge suspender tensioning technology, and in particular to suspender tensioning equipment for tied arches. Background Technology

[0002] Bridge suspenders are the main load-bearing components of bridges. They are generally made of rigid prestressed or flexible prestressed materials. Typically, the upper end of the suspender passes through the arch rib and is anchored to the tensioning base at the upper edge of the arch rib, while the lower end is anchored to the fixed base at the lower edge of the suspension beam. During bridge construction, external tensioning devices are usually used to apply prestress to the suspenders, causing them to deform to cope with the loads on the structure itself, including the weight of the components, wind loads, snow loads, and seismic loads.

[0003] Existing tensioning equipment often uses anchors to fix one end of the suspender rod. The tensioning end anchor consists of four parts: wedge, anchor ring, anchor plate, and spiral reinforcement. After the workers assemble the various parts of the anchor and fix it on the suspender rod, they use jacks or oil pumps to move the anchor to achieve the effect of tensioning the suspender rod.

[0004] Regarding the aforementioned technologies, the inventors believe that manual installation of anchorages involves numerous components, making installation and disassembly cumbersome and inconvenient, thereby reducing work efficiency and increasing construction time. Summary of the Invention

[0005] In order to simplify the equipment installation and disassembly steps, thereby increasing work efficiency, shortening the construction period, and saving costs, this application provides a tie-arch suspension tensioning device.

[0006] The tie-rod suspension tensioning device provided in this application adopts the following technical solution:

[0007] The tie-rod arch suspension tensioning device includes a support fixedly installed on the arch rib and a lifting structure for tensioning the suspension rod; a storage groove is provided on the arch rib, and one end of the suspension rod passes through the inner wall of the storage groove; a clamping groove is provided on the suspension rod;

[0008] The lifting structure includes a support plate, a first lead screw, a drive assembly, and two clamping rods; the support plate has a sliding groove, and the two ends of the first lead screw are respectively rotatably connected to the opposite inner walls of the sliding groove; the clamping rods are threadedly connected to the first lead screw; the drive assembly drives the first lead screw to rotate.

[0009] A second lead screw is rotatably mounted on the support, and the support plate is threadedly connected to the second lead screw. A guide rod is fixedly mounted on the support, and the support plate slides on the guide rod. The lifting structure also includes a transmission assembly, and the driving assembly drives the second lead screw to rotate through the transmission assembly.

[0010] By adopting the above technical solution, when workers need to tension the boom, they first install the support and lifting structure on the arch rib. Then, they use the drive and transmission components to rotate the second lead screw. Under the action of the guide rod, the rotation of the second lead screw drives the support plate to move downward to the appropriate position. The drive component then drives the first lead screw to rotate, which in turn moves the clamping rod. When the clamping rod moves to the clamping slot inserted into the boom, the first lead screw stops rotating under the action of the drive and transmission components, and the second lead screw reverses direction. The reverse rotation of the second lead screw drives the support plate to move upward, which in turn moves the clamping rod. The movement of the clamping rod pulls the boom upward, thus completing the tensioning operation of the boom. This also reduces the cumbersome installation of the boom by the tensioning equipment, making installation and disassembly easier, thereby increasing work efficiency and shortening the construction period.

[0011] Preferably, a guide cylinder is fixedly installed on the support plate, and a guide spring is fixedly installed inside the guide cylinder, with the guide spring abutting against the lifting rod; a through hole is opened on the side wall of the guide cylinder, and the clamping rod slides in the through hole.

[0012] By adopting the above technical solution, when the workers install the lifting structure, the guide cylinder is installed above the lifting rod. When the support plate moves downward, the guide cylinder moves downward with the support plate. When the lifting rod is inserted into the guide cylinder, the lifting rod abuts against and squeezes the guide spring to move until the clamping rod is aligned with the clamping groove on the lifting rod. The guide cylinder facilitates the workers to install the lifting structure in the correct position, and the guide spring has a guiding effect on the lifting rod, reducing the possibility that the clamping rod may not be able to accurately locate the lifting rod.

[0013] Preferably, the drive assembly includes a motor, a telescopic rod, a first bevel gear, a second bevel gear, and two sets of bevel gears; a fixed box is fixedly installed on the support, the motor slides inside the fixed box, the telescopic rod is rotatably connected to the support, the first bevel gear is fixedly sleeved on the motor's rotating shaft, a connecting plate is fixedly installed on the support, and a connecting shaft is rotatably connected to the connecting plate; the second bevel gear is fixedly sleeved on the connecting shaft, the connecting shaft is connected to the telescopic rod through one set of bevel gears, and the first lead screw and the telescopic rod are connected through another set of bevel gears; the first bevel gear and the second bevel gear mesh.

[0014] By adopting the above technical solution, when the motor starts, it drives the first bevel gear to rotate. Through the cooperation of the first bevel gear and the second bevel gear, the rotation of the motor drives the second bevel gear to rotate and the connecting shaft to rotate. The connecting shaft drives the telescopic rod to rotate through the bevel gear set. The rotation of the telescopic rod drives the first lead screw to rotate through the bevel gear set. The rotation of the first lead screw drives the clamping rod to move towards the lifting rod, so that the clamping rod can abut against the inner wall of the clamping groove on the lifting rod.

[0015] Preferably, the transmission assembly includes a third bevel gear and a fourth bevel gear, which are respectively fixedly sleeved on the second lead screw; the fixed box is provided with a lifting assembly for lifting the motor, and the first bevel gear meshes with the third bevel gear.

[0016] By adopting the above technical solution, after the workers install the lifting structure, the first bevel gear meshes with the third bevel gear. Under the rotation of the motor, the second lead screw rotates, thereby driving the support plate to move the clamping rod towards the boom. When the clamping rod aligns with the clamping groove on the boom, the motor moves away from the third bevel gear and meshes with the second bevel gear under the action of the lifting assembly, driving the clamping rod to move. Subsequently, when the clamping block clamps the clamping groove, the lifting assembly drives the motor to move away from the second bevel gear and meshes with the fourth bevel gear, driving the second lead screw to reverse, thereby driving the support plate to pull the boom away from the boom.

[0017] Preferably, the clamping rod has a placement groove, a first airbag is disposed in the placement groove, a first sensing block slides in the placement groove, and the first sensing block can abut against the inner wall of the clamping groove.

[0018] The inner wall of the placement groove is provided with a sliding groove, and a slider slides in the sliding groove. The slider is fixedly connected to the first sensing block. A first spring is provided in the sliding groove, and the two ends of the first spring are respectively fixedly connected to the slider and the inner wall of the sliding groove.

[0019] The first sensing block has a storage slot, which is connected to the placement slot. A push plate slides in the storage slot, and the first airbag abuts against the push plate. A second spring is provided between the push plate and the inner wall of the storage slot. A limiting component is provided on the inner wall of the storage slot to limit the push plate.

[0020] By adopting the above technical solution, before the boom is inserted into the guide cylinder, the push plate compresses the second spring through the action of the limiting component, and the first airbag abuts against the push plate; during the downward movement of the support plate, the side wall of the boom pushes the first sensing block to compress the first spring and slide. When the first sensing block aligns with the clamping groove on the boom, the first sensing block is inserted into the clamping groove on the boom under the push of the first spring; at the same time, the limiting component is released, and the push plate compresses the first airbag under the elastic force of the second spring to drive the lifting component, so that the first bevel gear moves away from the first and third bevel gears and meshes with the second bevel gear; when the clamping rod moves towards the boom, the first sensing block abuts against the inner wall of the clamping groove and pushes the first sensing block to compress the first airbag in the placement groove. When the clamping rod presses against the inner wall of the clamping groove, the lifting component moves away from the second bevel gear and meshes with the third bevel gear under the action of the first airbag.

[0021] Preferably, the limiting component includes a second sensing block and a limiting block. The second sensing block passes through and is slidably connected to the inner wall of the storage tank, and the second sensing block abuts against the inner wall of the clamping groove. The limiting block is fixedly connected to the push plate, and the limiting block is provided with an inclined surface. The second sensing block is provided with a limiting groove for the limiting block to be inserted.

[0022] By adopting the above technical solution, before the first sensing block is inserted into the clamping groove, the limiting block is inserted into the limiting groove on the second sensing block; when the first sensing block is inserted into the clamping groove, the inner wall of the clamping groove abuts against and pushes the second sensing block to move away from the limiting block; when the limiting groove on the second sensing block moves away from the limiting block, the limiting effect of the push plate is released; when gas is injected into the first airbag and pushes the push plate to move, the limiting block moves with the push plate and pushes the second sensing block to move under the action of the inclined surface on the limiting block, and finally the limiting block is inserted into the limiting groove on the second sensing block.

[0023] Preferably, a third spring is provided in the storage tank, and the two ends of the third spring are respectively fixedly connected to the second sensing block and the inner wall of the storage tank.

[0024] By adopting the above technical solution, under the action of the elastic potential energy of the third spring, one end of the third spring abuts against the second sensing block, thereby releasing the limit of the push plate in case of accidental contact by the staff.

[0025] Preferably, the lifting assembly includes a lifting plate, a hose, and a second airbag; the lifting plate slides within the fixed box cavity, the motor is mounted on the lifting plate, the second airbag is disposed within the fixed box, and the two ends of the hose are respectively sealed and connected to the first airbag and the second airbag.

[0026] By adopting the above technical solution, when the first airbag is compressed, the gas in the first airbag enters the second airbag through the hose. The expansion of the second airbag can push the lifting plate to move, and the movement of the lifting plate drives the motor and the first bevel gear on its rotating shaft to move.

[0027] Preferably, a rubber pad is fixedly provided on the clamping rod, and the rubber pad abuts against the inner wall of the clamping groove.

[0028] By adopting the above technical solution, when the clamping rod pulls the boom, the rubber pad can not only increase the friction of the contact surface, but also buffer the rigid force of the clamping rod on the boom, thereby reducing the possibility of local damage to the boom.

[0029] Preferably, a sensor for detecting the prestress value is installed on the boom, and an inflation / deflation switch is provided on the second airbag. The sensor can control the switch on the second airbag and the rotation direction of the motor shaft.

[0030] By adopting the above technical solution, when the sensor detects that the prestress of the boom has reached the predetermined value, the sensor transmits information to open the switch of the second airbag, causing the gas in the second airbag to leak into the first bevel gear and mesh with the second bevel gear. Then the sensor controls the motor to reverse, and the motor reverses, driving the first lead screw to reverse, thereby moving the clamping rod away from the clamping groove on the boom.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. When workers need to tension the boom, they first install the support and lifting structure on the arch rib. Then, they use the drive and transmission components to rotate the second lead screw. Under the action of the guide rod, the rotation of the second lead screw drives the support plate to move downward to the appropriate position. The drive component then drives the first lead screw to rotate, which in turn moves the clamping rod. When the clamping rod moves to the clamping slot inserted into the boom, the first lead screw stops rotating under the action of the drive and transmission components, and the second lead screw reverses direction. The reverse rotation of the second lead screw drives the support plate to move upward, which in turn moves the clamping rod. The movement of the clamping rod pulls the boom upward, thus completing the tensioning operation of the boom. This reduces the cumbersome installation of the boom by the tensioning equipment, making installation and disassembly easier, thereby increasing work efficiency and shortening the construction period.

[0033] 2. Under the action of the elastic potential energy of the third spring, one end of the third spring abuts against the second sensing block, thereby releasing the limit of the push plate in case of accidental contact by the staff;

[0034] 3. When the first airbag is compressed, the gas in the first airbag enters the second airbag through the hose. The expansion of the second airbag can push the lifting plate to move. The movement of the lifting plate drives the motor and the first bevel gear on its shaft to move. Attached Figure Description

[0035] Figure 1 This is an overall structural diagram of the tie-rod arch tensioning equipment.

[0036] Figure 2 This is a schematic diagram of the structure of the fixed box in this embodiment.

[0037] Figure 3 This is a schematic diagram highlighting the first lead screw in this embodiment.

[0038] Figure 4 This is a schematic diagram highlighting the second lead screw in this embodiment.

[0039] Figure 5 yes Figure 3 Enlarged view of point A in the middle.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Arch rib; 2. Hanging rod; 3. Support; 4. Storage slot; 5. Clamping slot; 6. Support plate; 7. Clamping rod; 8. Drive assembly; 9. Sliding groove; 10. First lead screw; 11. Second lead screw; 12. Guide rod; 13. Transmission assembly; 14. Guide cylinder; 15. Guide spring; 16. Perforation; 17. Motor; 18. Telescopic rod; 19. First bevel gear; 20. Second bevel gear; 21. Bevel gear set; 22. Third bevel gear; 23. Fourth bevel gear; 25. Lifting assembly; 26. Placement slot; 27. First airbag; 28. First sensor block; 29. ​​Slide groove; 30. Slider; 31. First spring; 32. Storage slot; 33. Push plate; 34. Second spring; 35. Limiting assembly; 36. Second sensor block; 37. Limiting block; 38. Limiting groove; 39. Third spring; 40. Lifting plate; 41. Fixing box; 42. Hoses; 43. Second airbag; 44. Rubber pad; 45. Sensor; 46. Connecting plate; 47. Connecting shaft; 48. Lifting structure. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0043] This application discloses a tensioning device for the tie-arch suspension rod, such as... Figure 1 and Figure 2 As shown, and in combination Figure 3 As shown, it includes a support 3 fixedly installed on the upper end face of the arch rib 1 and a lifting structure 48 for tensioning the hanger 2; there are two supports 3, and the supports 3 have elasticity to fit and fix the arch rib 1 to the arc surface; a storage groove 4 is opened on the upper end face of the arch rib 1 in the vertical direction, and the top end of the hanger 2 passes through the inner wall of the storage groove 4; an annular clamping groove 5 is opened on the side wall of the hanger 2;

[0044] like Figure 2 and Figure 3 As shown, the lifting structure 48 includes a support plate 6, a first lead screw 10, two clamping rods 7, and a drive assembly 8. A sliding groove 9 is vertically formed on the lower end face of the support plate 6. The axis of the first lead screw 10 is horizontally aligned, and both ends of the first lead screw 10 are rotatably connected to opposite side walls of the sliding groove 9. Rubber pads 44 are fixedly adhered to the clamping rods 7, and these rubber pads 44 abut against the inner wall of the clamping groove 5. Both clamping rods 7 are threadedly connected to the first lead screw 10 and inserted into the clamping groove 5. The drive assembly 8 drives the first lead screw 10 to rotate.

[0045] like Figure 2As shown, a second lead screw 11 is rotatably mounted on the support 3 at the left end, and the axis of the second lead screw 11 is set in the vertical direction. A guide rod 12 is fixedly welded to the support 3 at the right end. The guide rod 12 is cylindrical and its axis is set in the vertical direction. The support plate 6 is threaded to the second lead screw 11 and slides on the guide rod 12. The lifting structure 48 also includes a transmission assembly 13. The drive assembly 8 drives the second lead screw 11 to rotate through the transmission assembly 13.

[0046] like Figure 2 and Figure 3 As shown, a guide cylinder 14 is fixedly welded to the lower end face of the support plate 6. The axis of the guide cylinder 14 is set in the vertical direction. A guide spring 15 is fixedly welded to the inner wall of the bottom end of the guide cylinder 14, and the guide spring 15 abuts against the hanger rod 2. Through holes 16 are respectively opened on opposite side walls of the guide cylinder 14, and the two clamping rods 7 can slide in the two through holes 16 respectively. A sensor 45 for detecting its prestress value is installed on the side wall of the hanger rod 2.

[0047] like Figure 1 and Figure 2 As shown, and in combination Figure 3 When the worker needs to tension the boom 2, firstly, the worker installs the support 3 and the lifting structure 48 on the arch rib 1. During the installation process, the worker places the guide cylinder 14 above the guide rod. Subsequently, the worker rotates the second lead screw 11 through the drive assembly 8 and the transmission assembly 13. Under the action of the guide rod 12, the rotation of the second lead screw 11 drives the support plate 6 to move downward. The downward movement of the support plate 6 drives the guide cylinder 14 to move downward. Under the action of the guide cylinder 14 and the guide spring 15, the boom 2 is inserted between the two clamping rods 7. When the clamping rods 7 are aligned with the clamping grooves 5 on the boom 2, the second lead screw 11 stops rotating.

[0048] like Figure 1 and Figure 2 As shown, and in combination Figure 3 The operator drives the first lead screw 10 to rotate via the drive assembly 8. This rotation causes the two clamping rods 7 to move towards each other. When the clamping rods 7 reach the clamping slots 5 on the suspension rod 2, the first lead screw 10 stops rotating. Under the action of the drive assembly 8 and the transmission assembly 13, the second lead screw 11 reverses direction. This reverse rotation causes the support plate 6 to move upwards, which in turn moves the clamping rods 7, pulling the suspension rod 2 upwards. During the tensioning process of the suspension rod 2, the sensor 45 records the prestress of the suspension rod 2. When the expected prestress is reached, the second lead screw 11 stops rotating, and the first lead screw 10 reverses direction, causing the two clamping rods 7 to move away from the suspension rod 2. This completes the tensioning operation of the suspension rod 2, reducing the cumbersome installation of the tensioning equipment on the suspension rod 2, thus facilitating installation and disassembly, increasing work efficiency, and shortening the construction period.

[0049] like Figure 3 and Figure 4 As shown, a fixed box 41 is fixedly welded to the upper end face of the left end support 3. The fixed box 41 is cuboid in shape. The drive assembly 8 includes a motor 17, a telescopic rod 18, a first bevel gear 19, a second bevel gear 20, and two sets of bevel gear sets 21. The motor 17 is fixedly installed in the fixed box 41. The bottom end of the telescopic rod 18 is rotatably connected to the upper end face of the support 3. The first bevel gear 19 is fixedly sleeved on the rotating shaft of the motor 17. A connecting plate 46 is fixedly welded to the support 3. A connecting shaft 47 is rotatably connected to the connecting plate 46 in the horizontal direction. The second bevel gear 20 is fixedly sleeved on the connecting shaft 47. The connecting shaft 47 and the telescopic rod 18 are connected through a set of bevel gear sets 21. The first bevel gear 19 and the second bevel gear 20 mesh with each other. The first lead screw 10 and the telescopic rod 18 are connected through another set of bevel gear sets 21.

[0050] like Figure 3 and Figure 4 As shown, the transmission assembly 13 includes a third bevel gear 22 and a fourth bevel gear 23, both of which are fixedly mounted on the second lead screw 11; the fourth bevel gear 23 is above the third bevel gear 22, and the second bevel gear 20 is located between the third bevel gear 22 and the fourth bevel gear 23. The fixed box 41 is equipped with a lifting assembly 25 of the lifting motor 17.

[0051] like Figure 3 and Figure 5 As shown, a placement groove 26 is horizontally formed at the bottom of the clamping rod 7. A first airbag 27 is placed in the placement groove 26, and a first sensing block 28 slides horizontally within the placement groove 26. The first sensing block 28 has an inclined surface and can abut against the inner wall of the clamping groove 5. Sliding grooves 29 are formed on the upper and lower inner walls of the placement groove 26, and a slider 30 slides horizontally within the sliding groove 29. The slider 30 is cuboid in shape and is fixedly welded to the side wall of the first sensing block 28. A first spring is placed within the sliding groove 29. Spring 31, the first spring 31 is set in the horizontal direction, and the two ends of the first spring 31 are fixedly welded to the inner wall of slider 30 and slide groove 29 respectively; a storage groove 32 is opened in the first sensing block 28 along the horizontal direction, the storage groove 32 is connected to the placement groove 26, a push plate 33 slides in the storage groove 32, the push plate 33 is in the shape of a cuboid, the first airbag 27 abuts against the push plate 33; a second spring 34 is set between the push plate 33 and the inner wall of the storage groove 32; a limiting component 35 is set on the inner wall of the storage groove 32 to limit the push plate 33.

[0052] like Figure 5The limiting component 35 includes a second sensing block 36 and a limiting block 37. The second sensing block 36 is inverted L-shaped, and its bottom is inserted through and slidably connected to the bottom inner wall of the storage tank 32. The second sensing block 36 abuts against the inner wall of the clamping groove 5. The limiting block 37 is fixedly welded to the end of the push plate 33 away from the first airbag 27. The limiting block 37 is provided with an inclined surface. The second sensing block 36 is provided with a limiting groove 38 for the limiting block 37 to be inserted. A third spring 39 is provided in the storage tank 32. The third spring 39 is arranged in a vertical direction. The two ends of the third spring 39 are fixedly welded to the top of the second sensing block 36 and the top inner wall of the storage tank 32, respectively.

[0053] like Figure 3 and Figure 4 As shown, and in combination Figure 5 As shown, after the lifting structure 48 is installed, the first bevel gear 19 and the third bevel gear 22 mesh. When the operator turns on the motor 17, the first bevel gear 19 drives the third bevel gear 22 to rotate. The rotation of the third bevel gear 22 drives the second lead screw 11 to rotate. The rotation of the second lead screw 11 drives the support plate 6 to move downward. The downward movement of the support plate 6 drives the clamping rod 7 to move downward. Before the boom 2 is inserted into the guide cylinder 14, the push plate 33 compresses the second spring 34 through the action of the limiting component 35, and the first airbag 27 abuts against the push plate 33; during the downward movement of the support plate 6, the side wall of the boom 2 abuts against and slides against the first sensing block 28. When the first sensing block 28 aligns with the clamping groove 5 on the boom 2, the first sensing block 28 is inserted into the clamping groove 5 on the boom 2 under the push of the first spring 31; at the same time, the inner wall of the clamping groove 5 abuts against and pushes the second sensing block 36 to compress the third spring 39 and move away from the limiting block 37. When the limiting groove 38 on the second sensing block 36 moves away from the limiting block 37... At this time, the push plate 33, under the elastic force of the second spring 34, compresses the first airbag 27 and moves it. The first airbag 27 is squeezed, so that the gas inside flows through the hose 42 to the second airbag 43. The gas inside the second airbag 43 increases, and the volume of the second airbag 43 increases, which can push the lifting plate 40 to move upward. The lifting plate 40 moves upward, which drives the motor 17 on it to move upward. As a result, the first bevel gear 19 moves away from the third bevel gear 22 and meshes with the second bevel gear 20. When the first bevel gear 19 moves away from the third bevel gear 22, the second lead screw 11 stops rotating, so the support plate 6 stops descending.

[0054] like Figure 3 and Figure 4 As shown, and in combination Figure 5As shown, when the first bevel gear 19 and the second bevel gear 20 mesh, the rotation of the second bevel gear 20 drives the telescopic rod 18 to rotate through a set of bevel gears 21. The rotation of the telescopic rod 18 drives the first lead screw 10 to rotate through another set of bevel gears 21. The rotation of the first lead screw 10 drives the two clamping rods 7 to move towards each other. The two clamping rods 7 move into the clamping groove 5. The first sensing block 28 abuts against the inner wall of the clamping groove 5. The clamping rods 7 compress the first spring 31 and move into the clamping groove 5. At the same time, the first sensing block 28 is pushed into the placement groove 26 to compress the first airbag 27. When the clamping rods 7 press against the inner wall of the clamping groove 5 and the first sensing block 28 is completely in the placement groove 26, the second airbag 43 continues to increase in volume under the gas delivery of the first airbag 27 until the first bevel gear 19 moves away from the second bevel gear 20 and meshes with the fourth bevel gear 23.

[0055] like Figure 3 and Figure 4 As shown, and in combination Figure 5 As shown, the fourth bevel gear 23 is positioned opposite to the third bevel gear 22. The rotation of the fourth bevel gear 23 drives the second lead screw 11 to reverse, thereby causing the support plate 6 to move upward. The upward movement of the support plate 6 drives the clamping rod 7 to move upward. When the clamping rod 7 pulls the boom 2, the rubber pad 44 not only increases the friction of the contact surface but also buffers the rigid force of the clamping rod 7 on the boom 2, thereby reducing the possibility of local damage to the boom 2. When the sensor 45 detects that the prestress of the boom 2 has reached a predetermined value, the sensor 45 transmits information to open the switch of the second airbag 43, causing the gas in the second airbag 43 to leak into the first bevel gear 19 and the second bevel gear 20 to mesh. Subsequently, the sensor 45 controls the motor 17 to reverse, and the reverse movement of the motor 17 drives the first lead screw 10 to reverse, thereby causing the clamping rod 7 to move away from the clamping groove 5 on the boom 2.

[0056] The implementation principle of this application embodiment is as follows: The worker installs two supports 3 on the upper surfaces of the arch ribs 1 located at both ends of the storage slot 4. Then, the worker installs the lifting structure 48 on the supports 3. Next, the worker starts the motor 17. The motor 17, through the engagement of the bevel gear set 21, drives the support plate 6 to move into the storage slot 4. The lifting rod 2 is inserted into the guide cylinder 14. When the clamping rod 7 aligns with the clamping slot 5 on the lifting rod 2, the second sensing block 36 is inserted into the clamping slot 5. The lifting assembly 25 is activated by compressed gas, causing a change in the position and height of the motor 17. This causes the motor 17 to drive the second bevel gear 20 to rotate, thereby causing the clamping rod 7 to move... The clamping rod 7 moves into the clamping groove 5 until it is fully inserted. When the clamping rod 7 is inserted into the clamping groove 5, the inner wall of the clamping groove 5 pushes the first sensing block 28 to squeeze the first airbag 27. As a result, the motor 17 continues to rise under the action of the lifting assembly 25. Then the motor 17 starts the fourth bevel gear 23 to rotate, the second lead screw 11 reverses, the support plate 6 drives the clamping rod 7 to move upward, and the clamping rod 7 pulls the suspension rod 2 upward. The sensor 45 on the suspension rod 2 detects the prestress of the suspension rod 2. When the expected prestress is reached, the sensor 45 causes the motor 17 to reverse and descend to mesh with the second bevel gear 20, so that the clamping rod 7 moves away from the clamping rod 2, and the tensioning of the suspension rod 2 ends.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tensioning device for tie-rod arch suspension rods, characterized in that: It includes a support (3) fixedly installed on the arch rib (1) and a lifting structure (48) for tensioning the rod (2); a storage groove (4) is provided on the arch rib (1), and one end of the rod (2) passes through the inner wall of the storage groove (4); a clamping groove (5) is provided on the rod (2); The lifting structure (48) includes a support plate (6), a first lead screw (10), a drive assembly (8), and two clamping rods (7); the support plate (6) has a sliding groove (9), and the two ends of the first lead screw (10) are respectively rotatably connected to the opposite inner walls of the sliding groove (9), and the clamping rods (7) are threadedly connected to the first lead screw (10); the drive assembly (8) drives the first lead screw (10) to rotate; A second lead screw (11) is rotatably mounted on the support (3), and the support plate (6) is threadedly connected to the second lead screw (11). A guide rod (12) is fixedly mounted on the support (3), and the support plate (6) slides on the guide rod (12). The lifting structure (48) also includes a transmission assembly (13), and the driving assembly (8) drives the second lead screw (11) to rotate through the transmission assembly (13).

2. The tensioning device for tie-rod arch suspension rods according to claim 1, characterized in that: A guide cylinder (14) is fixedly installed on the support plate (6), and a guide spring (15) is fixedly installed inside the guide cylinder (14). The guide spring (15) abuts against the lifting rod (2). A through hole (16) is opened on the side wall of the guide cylinder (14), and the clamping rod (7) slides in the through hole (16).

3. The tensioning device for tie-rod arch suspension rods according to claim 1, characterized in that: The drive assembly (8) includes a motor (17), a telescopic rod (18), a first bevel gear (19), a second bevel gear (20), and two sets of bevel gears (21); a fixed box (41) is fixedly installed on the support (3), the motor (17) slides inside the fixed box (41), the telescopic rod (18) is rotatably connected to the support (3), the first bevel gear (19) is fixedly sleeved on the rotating shaft of the motor (17), and the support (3) is fixed with a fixed box (41). A connecting plate (46) is provided, and a connecting shaft (47) is rotatably connected to the connecting plate (46); the second bevel gear (20) is fixedly sleeved on the connecting shaft (47), and the connecting shaft (47) is connected to the telescopic rod (18) through a set of bevel gears (21), and the first lead screw (10) and the telescopic rod (18) are connected through another set of bevel gears (21); the first bevel gear (19) and the second bevel gear (20) mesh with each other.

4. The tensioning device for tie-rod arch suspension rods according to claim 3, characterized in that: The transmission assembly (13) includes a third bevel gear (22) and a fourth bevel gear (23), which are respectively fixedly sleeved on the second lead screw (11); the fixed box (41) is provided with a lifting assembly (25) for lifting the motor (17), and the first bevel gear (19) meshes with the third bevel gear (22).

5. The tensioning device for tie-rod arch suspension rods according to claim 4, characterized in that: The clamping rod (7) has a placement groove (26) inside, a first airbag (27) is provided in the placement groove (26), a first sensing block (28) slides in the placement groove (26), and the first sensing block (28) can abut against the inner wall of the clamping groove (5). The inner wall of the placement groove (26) is provided with a sliding groove (29), and a slider (30) slides in the sliding groove (29). The slider (30) is fixedly connected to the first sensing block (28). A first spring (31) is provided in the sliding groove (29), and the two ends of the first spring (31) are fixedly connected to the slider (30) and the inner wall of the sliding groove (29), respectively. The first sensing block (28) has a storage slot (32) inside, the storage slot (32) is connected to the placement slot (26), a push plate (33) slides inside the storage slot (32), and the first airbag (27) abuts against the push plate (33); a second spring (34) is provided between the push plate (33) and the inner wall of the storage slot (32); a limiting component (35) is provided on the inner wall of the storage slot (32) to limit the push plate (33).

6. The tensioning device for the tie-rod arch suspension rod according to claim 5, characterized in that: The limiting component (35) includes a second sensing block (36) and a limiting block (37). The second sensing block (36) passes through and is slidably connected to the inner wall of the storage groove (32). The second sensing block (36) abuts against the inner wall of the clamping groove (5). The limiting block (37) is fixedly connected to the push plate (33). The limiting block (37) is provided with an inclined surface. The second sensing block (36) is provided with a limiting groove (38) for the limiting block (37) to be inserted.

7. The tensioning device for the tie-rod arch suspension rod according to claim 6, characterized in that: A third spring (39) is provided inside the storage tank (32), and the two ends of the third spring (39) are fixedly connected to the second sensing block (36) and the inner wall of the storage tank (32), respectively.

8. The tensioning device for tie-rod arch suspension rods according to claim 5, characterized in that: The lifting assembly (25) includes a lifting plate (40), a hose (42), and a second airbag (43); the lifting plate (40) slides within the cavity of the fixed box (41), the motor (17) is mounted on the lifting plate (40), the second airbag (43) is disposed within the fixed box (41), and the two ends of the hose (42) are respectively sealed and connected to the first airbag (27) and the second airbag (43).

9. The tensioning device for the tie-rod arch suspension rod according to claim 1, characterized in that: A rubber pad (44) is fixedly provided on the clamping rod (7), and the rubber pad (44) abuts against the inner wall of the clamping groove (5).

10. The tensioning device for the tie-rod arch suspension rod according to claim 8, characterized in that: A sensor (45) for detecting the prestress value is installed on the boom (2), and an inflation / deflation switch is provided on the second airbag (43). The sensor (45) can control the switch on the second airbag (43) and the rotation direction of the motor (17) shaft.

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