Temporary protection device for bridge expansion joint

Abstract

This invention relates to the field of bridge construction technology, specifically a temporary protective device for bridge deck expansion joints. The device includes a protective plate and two quick-fixing mechanisms. The protective plate is placed at the bridge deck expansion joint. The two quick-fixing mechanisms are symmetrically arranged on the front and rear outer walls of the protective plate, with the ends of the two quick-fixing mechanisms furthest from the protective plate clamped to the bridge deck railings. Each quick-fixing mechanism includes a connecting plate, a pulling plate, a fixing component, and two T-slots. The connecting plate is screwed onto the outer wall of the protective plate, and the two T-slots are symmetrically formed on the connecting plate. The pulling plate is slidably mounted on the two T-slots, and the fixing component is mounted on the outer wall of the pulling plate, with the end of the fixing component furthest from the protective plate clamped to the bridge deck railings. This invention eliminates the need to drill holes in the asphalt concrete surface to fix the protective plate, thus avoiding the need to fill the holes later and preventing any impact on construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically a temporary protective device for bridge deck expansion joints. Background Technology

[0002] Bridges are an integral part of urban road construction. Their construction facilitates connections between different geographical locations and makes travel easier for people. During the construction of the bridge deck, expansion joints are used to divide the bridge deck foundation into two independent parts, which allows for horizontal expansion and contraction of the bridge deck along its length in the future.

[0003] Chinese utility model patent CN217733739U discloses an auxiliary passage device for bridge deck expansion joints, including an asphalt concrete surface layer. A protective cover plate is installed at the top of the asphalt concrete surface layer. The asphalt concrete surface layer and the protective cover plate are detachably installed. Screws are evenly inserted through both sides of the inner side of the protective cover plate. A nut is threadedly connected to the outer wall of the screws near the upper part of the protective cover plate. A threaded groove is provided on the inner side of the asphalt concrete surface layer for threaded connection of the screws. This application achieves the connection between the protective cover plate and the asphalt concrete surface layer through the threaded connection between the screws and the inner side of the threaded groove. The connection between the screws and the threaded groove is further reinforced by the threaded connection between the nut and the screw, thus making the protective cover plate more stable during installation and use. The protective cover plate can be used for temporary passage on the bridge surface and can be removed after the asphalt surface layer is laid, improving the protection of the road surface.

[0004] However, the above-mentioned patent still has the following shortcomings in actual use: the patent uses the threaded connection between the screw and the inner side of the threaded groove to realize the connection between the protective cover plate and the asphalt concrete surface layer. This connection method requires drilling holes on the surface of the asphalt concrete surface layer, and filling the holes later, which affects the construction efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a temporary protective device for bridge deck expansion joints, in order to solve the problem mentioned in the background art that it is necessary to make holes in the surface of asphalt concrete pavement and then fill the holes later, which affects the construction efficiency.

[0006] The technical solution of this invention is:

[0007] A temporary protective device for bridge expansion joints includes a protective plate and two quick-fixing mechanisms. The protective plate is placed at the bridge expansion joint, and the two quick-fixing mechanisms are symmetrically arranged on the front and rear outer walls of the protective plate. The ends of the two quick-fixing mechanisms away from the protective plate are clamped to the bridge railing. Each quick-fixing mechanism includes a connecting plate, a pulling plate, a fixing component, and two T-slots. The connecting plate is screwed onto the outer wall of the protective plate, and the two T-slots are symmetrically formed on the connecting plate. The pulling plate is slidably mounted on the two T-slots, and the fixing component is mounted on the outer wall of the pulling plate. The end of the fixing component away from the protective plate is clamped to the bridge railing.

[0008] Furthermore, the fixing assembly includes a mounting frame, a rotating shaft, a rotating roller, a rotating seat, a rotating shaft, a rotating handle, a driving wheel, a driven wheel, a belt, a limiting component, a top plate, a clamping component, two pull rings, two steel cables, and two brackets. The two pull rings are symmetrically arranged on the outer wall of the pulling plate. The mounting frame is located beside the two pull rings. The rotating shaft is rotatably mounted inside the mounting frame, and one end of the rotating shaft extends to the outside of the mounting frame. The rotating roller is mounted on the rotating shaft. The front ends of the two steel cables are respectively connected to the two pull rings, and the rear ends of the two steel cables are respectively connected to the rotating rollers. Next, the rotating seat is disposed on the top of the mounting frame, the rotating shaft is rotatably mounted on the rotating seat, the rotating handle is mounted on the head end of the rotating shaft, the driving wheel is mounted on the tail end of the rotating shaft, the driven wheel is mounted on the end of the rotating shaft extending to the outside of the mounting frame, the belt is sleeved on the outside of the driving wheel and the driven wheel, the limiting component is mounted on the top of the mounting frame and is used to limit the rotating handle, the two brackets are symmetrically disposed on the top outer wall of the mounting frame, the top plate is horizontally disposed on the top of the two brackets, and the clamping component is disposed on the top plate and the mounting frame.

[0009] Furthermore, the limiting component includes a limiting plate, a limiting bolt, and several limiting holes. The limiting plate is installed on the top of the mounting bracket, and the several limiting holes are equally spaced around the center of the limiting plate. The limiting bolt is installed on the rotating handle and is screwed to the corresponding limiting hole.

[0010] Furthermore, the clamping component includes an adjusting shaft, an adjusting gear, an adjusting handle, a locking element, two sliding grooves, two adjusting plates, two adjusting brackets, two adjusting racks, and two clamping elements. The two sliding grooves are symmetrically formed on the top of the top plate, and the two adjusting plates are symmetrically arranged on the top of the top plate, with the bottom ends of the two adjusting plates slidingly engaged with the two sliding grooves. The two adjusting brackets are arranged opposite each other on the outer walls of the two adjusting plates, and the two adjusting racks are arranged opposite each other on the two adjusting brackets. The adjusting shaft is rotatably mounted on one of the brackets. The adjusting gear is mounted on the head end of the adjusting shaft, and both sides of the adjusting gear mesh with the two adjusting racks respectively. The adjusting handle is mounted on the tail end of the adjusting shaft, and the adjusting handle is provided with a locking groove. The locking element is mounted on the top of the mounting bracket, and one end of the locking element is inserted into the locking groove. The two clamping elements are symmetrically arranged on the top of the two adjusting plates.

[0011] Furthermore, each clamping component includes a telescopic sleeve, a moving rod, a moving rack, a moving shaft, a moving gear, an L-shaped plate, a moving motor, a horizontal plate, a clamping module, and two fixed seats. The telescopic sleeve is horizontally disposed on the top of the adjusting plate. The moving rod is slidably mounted inside the telescopic sleeve. The moving rack is horizontally disposed on the top of the moving rod. The two fixed seats are symmetrically disposed on the top of the telescopic sleeve. The moving shaft is rotatably mounted on the two fixed seats. The moving gear is mounted on the moving shaft and meshes with the moving rack. The L-shaped plate is horizontally disposed on the outer wall of the telescopic sleeve. The moving motor is horizontally disposed on the top of the L-shaped plate, and the output shaft of the moving motor is connected to the moving shaft. The horizontal plate is disposed at the end of the moving rod and has a through groove. The clamping module is disposed on the top of the horizontal plate and is located above the through groove.

[0012] Furthermore, the clamping module includes a U-shaped frame, a lead screw slide, a lifting block, and a clamping plate. The U-shaped frame is mounted on the top of the horizontal plate, the lead screw slide is vertically mounted on the inner wall of the U-shaped frame, the lifting block is mounted on the moving end of the lead screw slide, and the clamping plate is mounted on the bottom of the lifting block and is located above the through slot.

[0013] Furthermore, the locking component includes a support frame, a locking rod, a locking disc, a locking block, a spring, and a pull handle. The support frame is disposed on the top of the mounting frame. The locking rod is slidably mounted on the top of the support frame. The locking disc is mounted on the head end of the locking rod. The locking block is mounted on the outer wall of the locking disc and is inserted into the locking groove. The spring is sleeved on the outside of the locking rod, and both ends of the spring are respectively connected to the support frame and the locking disc. The pull handle is mounted on the tail end of the locking rod.

[0014] Furthermore, the vertical cross-sections of both the locking groove and the locking block are regular hexagons.

[0015] Furthermore, two inclined plates are symmetrically arranged on the left and right outer walls of the protective plate.

[0016] This invention provides an improved temporary protective device for bridge deck expansion joints, which has the following improvements and advantages compared with the prior art:

[0017] Firstly, this invention places the protective plate at the expansion joint of the asphalt concrete bridge deck, and then uses the fixing components of two quick-fixing mechanisms to clamp the end away from the protective plate to the bridge deck railing. At this time, the protective plate is stably fixed on the top of the asphalt concrete bridge deck. The protective plate effectively provides temporary protection for the expansion joint, preventing construction vehicles from damaging the expansion joint. There is no need to make holes in the asphalt concrete surface to fix the protective plate, thus avoiding the need to fill the holes later and not affecting the construction efficiency.

[0018] Secondly, this invention removes the limiting component from restricting the rotating handle. Then, the rotating handle is manually rotated, causing the rotating shaft and drive wheel to rotate. The drive wheel, via a belt, drives the driven wheel, which in turn drives the rotating shaft and rotating roller. The rotating roller's rotation puts the two steel cables in a releasing state, facilitating the movement of the clamping component to extend to the outside of the bridge railing. Then, the rotating handle is rotated in the opposite direction, causing the rotating roller to rotate in the opposite direction, putting the two steel cables in a retracting state. The clamping component then moves one end downwards to contact the outside of the bridge railing. Next, the limiting component restricts the rotating handle. At this point, the protective plate is stably fixed to the top of the asphalt concrete bridge deck by the clamping component, effectively providing temporary protection for the expansion joint.

[0019] Thirdly, this invention allows for manual pulling of the locking component to separate one end from the locking groove, followed by manual rotation of the adjusting handle. The adjusting handle drives the adjusting shaft and adjusting gear to rotate, which in turn drives the two adjusting racks to move closer or further apart. The two adjusting racks then drive the two adjusting plates to move closer or further apart, and finally, the two adjusting plates drive the two clamping components to move closer or further apart to adjust the distance between them. This facilitates the two clamping components to contact and clamp bridge railings of different lengths. Attached Figure Description

[0020] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0024] Figure 4 This is a three-dimensional structural diagram of the connecting plate of the present invention;

[0025] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0026] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 3 ;

[0027] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 4 ;

[0028] Figure 8 This is a three-dimensional structural diagram of the clamping component of the present invention;

[0029] Figure 9 This is a partial three-dimensional structural schematic diagram of the clamping component of the present invention;

[0030] Figure 10 This is a partial three-dimensional structural diagram of the present invention. Figure 5 ;

[0031] Figure 11 This is a three-dimensional structural diagram of the adjusting handle of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Protective plate; 2. Quick-fixing mechanism; 3. Connecting plate; 4. Pulling plate; 5. Fixing assembly; 5. Mounting bracket; 51. Rotating shaft; 511. Rotating roller; 512. Rotating seat; 513. Rotating shaft; 514. Rotating handle; 515. Driving wheel; 52. Driven wheel; 53. Belt; 54. Limiting component; 55. Limiting disc; 551. Limiting bolt; 552. Limiting hole; 553. Top plate; 56. Clamping component; 57. Adjusting shaft; 571. Adjusting gear; 572. Adjusting handle; 573. Locking groove; 5731. Locking component; 574. Support frame; 5741. Locking rod; 5742. Locking disc; 5743. Locking block; 5744. Spring. 745, handle 5746, slide 575, adjusting plate 576, adjusting frame 577, adjusting rack 578, clamping part 579, telescopic sleeve 5791, moving rod 5792, moving rack 5793, moving shaft 5794, moving gear 5795, L-shaped plate 5796, moving motor 5797, horizontal plate 57971, through groove 57972, clamping module 5798, U-shaped frame 57981, screw slide 57982, lifting block 57983, clamping plate 57984, fixed seat 5799, pull ring 58, steel cable 581, bracket 59, T-slot 6, inclined plate 7. Detailed Implementation

[0034] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] This invention provides an improved temporary protective device for bridge deck expansion joints, such as... Figures 1-11 As shown, the structure includes a protective plate 1 and two quick-fixing mechanisms 2. The protective plate 1 is placed at the bridge deck expansion joint. The two quick-fixing mechanisms 2 are symmetrically arranged on the front and rear outer walls of the protective plate 1, and the ends of the two quick-fixing mechanisms 2 away from the protective plate 1 are clamped to the bridge deck railing. Each quick-fixing mechanism 2 includes a connecting plate 3, a pulling plate 4, a fixing component 5, and two T-slots 6. The connecting plate 3 is screwed onto the outer wall of the protective plate 1, and the two T-slots 6 are symmetrically formed on the connecting plate 3. The pulling plate 4 is slidably mounted on the two T-slots 6, and the fixing component 5 is mounted on the outer side of the pulling plate 4. The protective plate 1 is placed on the wall, and the end of the fixing component 5 away from the protective plate 1 is clamped to the railing of the bridge deck. By placing the protective plate 1 at the expansion joint of the asphalt concrete of the bridge deck, and then using the fixing component 5 in the two quick fixing mechanisms 2 to clamp the end away from the protective plate 1 to the railing of the bridge deck, the protective plate 1 is stably fixed on the top of the asphalt concrete of the bridge deck. The protective plate 1 effectively provides temporary protection for the expansion joint, preventing construction vehicles from damaging the expansion joint. There is no need to make holes in the surface of the asphalt concrete to fix the protective plate 1, thus avoiding the need to fill the holes later and thus not affecting the construction efficiency.

[0036] Specifically, the fixing assembly 5 includes a mounting frame 51, a rotating shaft 511, a rotating roller 512, a rotating seat 513, a rotating shaft 514, a rotating handle 515, a driving wheel 52, a driven wheel 53, a belt 54, a limiting component 55, a top plate 56, a clamping component 57, two pull rings 58, two steel cables 581, and two brackets 59. The two pull rings 58 are symmetrically arranged on the outer wall of the pulling plate 4. The mounting frame 51 is located beside the two pull rings 58. The rotating shaft 511 is rotatably mounted inside the mounting frame 51, and one end of the rotating shaft 511 extends to the outside of the mounting frame 51. A movable roller 512 is mounted on a rotating shaft 511. The front ends of the two steel cables 581 are respectively connected to two pull rings 58, and the rear ends of the two steel cables 581 are respectively connected to the movable roller 512. A rotating seat 513 is mounted on top of a mounting frame 51. A rotating shaft 514 is rotatably mounted on the rotating seat 513. A rotating handle 515 is mounted on the head end of the rotating shaft 514. A driving wheel 52 is mounted on the tail end of the rotating shaft 514. A driven wheel 53 is mounted on the end of the rotating shaft 511 that extends to the outside of the mounting frame 51. A belt 54 is sleeved around the driving wheel 52 and the driven wheel 53. The limiting component 55 is installed on the top of the mounting frame 51 and is used to limit the rotation handle 515. Two brackets 59 are symmetrically arranged on the top outer wall of the mounting frame 51. The top plate 56 is horizontally positioned on top of the two brackets 59. The clamping component 57 is installed on the top plate 56 and the mounting frame 51. By removing the limiting component 55 from the rotation handle 515, and then manually rotating the rotation handle 515, the rotation handle 515 drives the rotation shaft 514 and the driving wheel 52 to rotate. The driving wheel 52 drives the driven wheel 53 to rotate via a belt 54, and the driven wheel 53 rotates... The shaft 511 and the rotating roller 512 rotate, causing the two steel cables 581 to be in the unwinding state, which facilitates the movement of the clamping component 57 to extend to the outside of the bridge deck railing. Then, the rotating handle 515 is rotated in the opposite direction, causing the rotating roller 512 to rotate in the opposite direction, causing the two steel cables 581 to be in the winding state. Then, the clamping component 57 works, causing one end to move downwards to contact the outside of the bridge deck railing. Then, the limiting component 55 is used to limit the rotating handle 515. At this time, the protective plate 1 is stably fixed to the top of the asphalt concrete of the bridge deck by the clamping component 57, and the protective plate 1 effectively provides temporary protection for the expansion joint.

[0037] Specifically, the limiting component 55 includes a limiting plate 551, a limiting bolt 552, and a plurality of limiting holes 553. The limiting plate 551 is mounted on the top of the mounting bracket 51. The plurality of limiting holes 553 are evenly spaced around the center of the limiting plate 551. The limiting bolt 552 is mounted on the rotating handle 515 and is screwed into the corresponding limiting hole 553. The rotating handle 515 can rotate by loosening the limiting bolt 552. When it is necessary to limit the rotating handle 515, it is only necessary to screw the limiting bolt 552 into the corresponding limiting hole 553, which is very convenient.

[0038] Specifically, the clamping component 57 includes an adjusting shaft 571, an adjusting gear 572, an adjusting handle 573, a locking element 574, two sliding grooves 575, two adjusting plates 576, two adjusting brackets 577, two adjusting racks 578, and two clamping elements 579. The two sliding grooves 575 are symmetrically formed on the top of the top plate 56. The two adjusting plates 576 are symmetrically arranged on the top of the top plate 56, and the bottom ends of both adjusting plates 576 slide in engagement with the two sliding grooves 575. The two adjusting brackets 577 are arranged opposite each other on the outer walls of the two adjusting plates 576. The two adjusting racks 578 are arranged opposite each other on the two adjusting brackets 577. The adjusting shaft 571 is rotatably mounted on one of the brackets 59. The adjusting gear 572 is mounted on the head end of the adjusting shaft 571, and both sides of the adjusting gear 572 mesh with the two adjusting racks 578 respectively. The adjusting handle 574... 73 is installed at the tail end of the adjusting shaft 571. The adjusting handle 573 is provided with a locking groove 5731. The locking member 574 is installed on the top of the mounting bracket 51, and one end of the locking member 574 is inserted into the locking groove 5731. Two clamping members 579 are symmetrically arranged on the top of the two adjusting plates 576. By manually pulling the locking member 574, one end of it is separated from the locking groove 5731. Then, the adjusting handle 573 is manually rotated. The adjusting handle 573 drives the adjusting shaft 571 and the adjusting gear 572 to rotate. The adjusting gear 572 drives the two adjusting racks 578 to move closer or further away from each other. The two adjusting racks 578 drive the two adjusting plates 576 to move closer or further away from each other. Finally, the two adjusting plates 576 drive the two clamping members 579 to move closer or further away from each other to adjust the distance between them, so that the two clamping members 579 can contact and clamp the bridge deck railings of different lengths.

[0039] Specifically, each clamping component 579 includes a telescopic sleeve 5791, a moving rod 5792, a moving rack 5793, a moving shaft 5794, a moving gear 5795, an L-shaped plate 5796, a moving motor 5797, a horizontal plate 5797, a clamping module 5798, and two fixed seats 5799. The telescopic sleeve 5791 is horizontally arranged on top of the adjusting plate 576. The moving rod 5792 is slidably installed inside the telescopic sleeve 5791. The moving rack 5793 is horizontally arranged on top of the moving rod 5792. The two fixed seats 5799 are symmetrically arranged on top of the telescopic sleeve 5791. The moving shaft 5794 is rotatably mounted on the two fixed seats 5799. The moving gear 5795 is mounted on the moving shaft 5794 and meshes with the moving rack 5793. The L-shaped plate 5796 is horizontally arranged on the telescopic sleeve 5791. On the outer wall of the sleeve 5791, the moving motor 5797 is horizontally mounted on the top of the L-shaped plate 5796, and the output shaft of the moving motor 5797 is connected to the moving shaft 5794. The horizontal plate 57971 is mounted on the end of the moving rod 5792. The horizontal plate 57971 is provided with a through groove 57972. The clamping module 5798 is mounted on the top of the horizontal plate 57971 and is located above the through groove 57972. The moving motor 5797 drives the moving shaft 5794 and the moving gear 5795 to rotate. The moving gear 5795 drives the moving rack 5793 to move horizontally. The moving rack 5793 drives the moving rod 5792 to move horizontally. The moving rod 5792 uses the horizontal plate 57971 to drive the clamping module 5798 to move horizontally, which facilitates the clamping module 5798 to contact and clamp the outer side of the bridge railing.

[0040] Specifically, the clamping module 5798 includes a U-shaped frame 57981, a lead screw slide 57982, a lifting block 57983, and a clamping plate 57984. The U-shaped frame 57981 is mounted on top of the horizontal plate 57971. The lead screw slide 57982 is vertically mounted on the inner wall of the U-shaped frame 57981. The lifting block 57983 is mounted on the moving end of the lead screw slide 57982. The clamping plate 57984 is mounted on the lifting block 57983. At the bottom of 3, and the clamping plate 57984 is located above the through groove 57972; when the through groove 57972 moves to the outside of the bridge railing, the screw slide 57982 works to drive the lifting block 57983 to move downward, the lifting block 57983 drives the clamping plate 57984 to move downward, the clamping plate 57984 moves downward through the through groove 57972 to the bottom of the horizontal plate 57971, and the clamping plate 57984 contacts and clamps the outside of the bridge railing.

[0041] Specifically, the locking component 574 includes a support frame 5741, a locking rod 5742, a locking disc 5743, a locking block 5744, a spring 5745, and a pull handle 5746. The support frame 5741 is disposed on the top of the mounting frame 51. The locking rod 5742 is slidably mounted on the top end of the support frame 5741. The locking disc 5743 is mounted on the head end of the locking rod 5742. The locking block 5744 is mounted on the outer wall of the locking disc 5743 and is inserted into the locking groove 5731. The spring 5745 is sleeved on the locking rod 574. The spring 5745 is external to the support frame 5741 and the locking plate 5743 respectively. The pull handle 5746 is installed at the tail end of the locking rod 5742. By pulling the pull handle 5746, the locking rod 5742 is moved. The locking rod 5742 moves the locking block 5744 away from the locking groove 5731, so that the adjusting handle 573 can rotate. When the adjusting handle 573 needs to be limited, the pull handle 5746 is released. Under the action of the spring 5745, the locking block 5744 springs into the locking groove 5731 to realize the limitation of the adjusting handle 573.

[0042] Specifically, the vertical cross-sections of the locking groove 5731 and the locking block 5744 are both regular hexagons; the regular hexagon shape facilitates the quick insertion of the locking block 5744 into the locking groove 5731.

[0043] Specifically, two inclined plates 7 are symmetrically arranged on the left and right outer walls of the protective plate 1; the two inclined plates 7 facilitate the passage of construction vehicles through the protective plate 1.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A temporary protective device for bridge deck expansion joints, characterized in that: The device includes a protective plate (1) and two quick-fixing mechanisms (2). The protective plate (1) is placed at the bridge deck expansion joint. The two quick-fixing mechanisms (2) are symmetrically arranged on the front and rear outer walls of the protective plate (1). The ends of the two quick-fixing mechanisms (2) away from the protective plate (1) are clamped to the railings of the bridge deck. Each quick-fixing mechanism (2) includes a connecting plate (3), a pulling plate (4), a fixing component (5), and two T-slots (6). The connecting plate (3) is screwed onto the outer wall of the protective plate (1). The two T-slots (6) are symmetrically opened on the connecting plate (3). The pulling plate (4) is slidably installed on the two T-slots (6). The fixing component (5) is installed on the outer wall of the pulling plate (4). The ends of the fixing component (5) away from the protective plate (1) are clamped to the railings of the bridge deck. The fixing assembly (5) includes a mounting frame (51), a rotating shaft (511), a rotating roller (512), a rotating seat (513), a rotating shaft (514), a rotating handle (515), a driving wheel (52), a driven wheel (53), a belt (54), a limiting component (55), a top plate (56), a clamping component (57), two pull rings (58), two steel cables (581), and two brackets (59). The two pull rings (58) are symmetrically arranged on the outer wall of the pulling plate (4). The mounting frame (51) is arranged beside the two pull rings (58). The rotating shaft (511) is rotatably mounted inside the mounting frame (51), and one end of the rotating shaft (511) extends to the outside of the mounting frame (51). The rotating roller (512) is arranged on the rotating shaft (511). The front ends of the two steel cables (581) are respectively connected to the two pull rings (58), and the rear ends of the two steel cables (581) are respectively connected to the two pull rings (58). A rotating roller (512) is connected, a rotating seat (513) is set on the top of the mounting frame (51), a rotating shaft (514) is rotatably mounted on the rotating seat (513), a rotating handle (515) is mounted on the head end of the rotating shaft (514), a driving wheel (52) is mounted on the tail end of the rotating shaft (514), a driven wheel (53) is mounted on one end of the rotating shaft (511) extending to the outside of the mounting frame (51), a belt (54) is sleeved on the outside of the driving wheel (52) and the driven wheel (53), a limiting component (55) is mounted on the top of the mounting frame (51) and the limiting component (55) is used to limit the rotating handle (515), two brackets (59) are symmetrically arranged on the top outer wall of the mounting frame (51), a top plate (56) is horizontally arranged on the top of the two brackets (59), and a clamping component (57) is mounted on the top plate (56) and the mounting frame (51).

2. The temporary protective device for bridge deck expansion joints according to claim 1, characterized in that: The limiting component (55) includes a limiting plate (551), a limiting bolt (552), and a plurality of limiting holes (553). The limiting plate (551) is mounted on the top of the mounting bracket (51). The plurality of limiting holes (553) are arranged at equal intervals around the center of the limiting plate (551) on the limiting plate (551). The limiting bolt (552) is arranged on the rotating handle (515) and is screwed to the corresponding limiting hole (553).

3. A temporary protective device for bridge deck expansion joints according to claim 2, characterized in that: The clamping component (57) includes an adjusting shaft (571), an adjusting gear (572), an adjusting handle (573), a locking member (574), two sliding grooves (575), two adjusting plates (576), two adjusting brackets (577), two adjusting racks (578), and two clamping members (579). The two sliding grooves (575) are symmetrically opened on the top of the top plate (56), and the two adjusting plates (576) are symmetrically arranged on the top of the top plate (56). The bottom ends of the two adjusting plates (576) are slidably engaged with the two sliding grooves (575). The two adjusting brackets (577) are arranged opposite each other on the outer walls of the two adjusting plates (576). The two adjusting racks (579) are... 8) The two adjustment brackets (577) are arranged opposite each other. The adjustment shaft (571) is rotatably mounted on one of the brackets (59). The adjustment gear (572) is mounted on the head end of the adjustment shaft (571), and the two sides of the adjustment gear (572) are respectively engaged with the two adjustment racks (578). The adjustment handle (573) is mounted on the tail end of the adjustment shaft (571). The adjustment handle (573) is provided with a locking groove (5731). The locking member (574) is mounted on the top of the mounting bracket (51), and one end of the locking member (574) is inserted into the locking groove (5731). The two clamping members (579) are symmetrically arranged on the top of the two adjustment plates (576).

4. A temporary protective device for bridge deck expansion joints according to claim 3, characterized in that: Each clamping component (579) includes a telescopic sleeve (5791), a moving rod (5792), a moving rack (5793), a moving shaft (5794), a moving gear (5795), an L-shaped plate (5796), a moving motor (5797), a horizontal plate (57971), a clamping module (5798), and two fixed seats (5799). The telescopic sleeve (5791) is horizontally arranged on top of the adjusting plate (576). The moving rod (5792) is slidably installed inside the telescopic sleeve (5791). The moving rack (5793) is horizontally arranged on top of the moving rod (5792). The two fixed seats (5799) are symmetrically arranged on top of the telescopic sleeve (5791). The moving shaft (5794) is rotatably mounted on the two fixed seats. On the fixed seat (5799), the moving gear (5795) is mounted on the moving shaft (5794) and meshes with the moving rack (5793). The L-shaped plate (5796) is horizontally arranged on the outer wall of the telescopic sleeve (5791). The moving motor (5797) is horizontally arranged on the top of the L-shaped plate (5796) and the output shaft of the moving motor (5797) is connected to the moving shaft (5794). The horizontal plate (57971) is mounted on the end of the moving rod (5792). The horizontal plate (57971) is provided with a through groove (57972). The clamping module (5798) is mounted on the top of the horizontal plate (57971) and is located above the through groove (57972).

5. A temporary protective device for bridge deck expansion joints according to claim 4, characterized in that: The clamping module (5798) includes a U-shaped frame (57981), a lead screw slide (57982), a lifting block (57983), and a clamping plate (57984). The U-shaped frame (57981) is mounted on the top of the horizontal plate (57971). The lead screw slide (57982) is vertically mounted on the inner wall of the U-shaped frame (57981). The lifting block (57983) is mounted on the moving end of the lead screw slide (57982). The clamping plate (57984) is mounted on the bottom of the lifting block (57983) and is located above the through groove (57972).

6. A temporary protective device for bridge deck expansion joints according to claim 4, characterized in that: The locking component (574) includes a support frame (5741), a locking rod (5742), a locking disc (5743), a locking block (5744), a spring (5745), and a pull handle (5746). The support frame (5741) is disposed on the top of the mounting bracket (51). The locking rod (5742) is slidably mounted on the top of the support frame (5741). The locking disc (5743) is mounted on the locking rod (5742). The locking block (5744) is installed on the outer wall of the locking disc (5743) and is inserted into the locking groove (5731). The spring (5745) is sleeved on the outside of the locking rod (5742) and the two ends of the spring (5745) are respectively connected to the support frame (5741) and the locking disc (5743). The pull handle (5746) is installed at the tail end of the locking rod (5742).

7. A temporary protective device for bridge deck expansion joints according to claim 6, characterized in that: The vertical cross-sections of the locking groove (5731) and the locking block (5744) are both regular hexagons.

8. A temporary protective device for bridge deck expansion joints according to claim 1, characterized in that: Two inclined plates (7) are symmetrically arranged on the left and right outer walls of the protective plate (1).

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