Telescopic rain-proof shed for bridge fabrication machine
By designing a telescopic rain shelter for bridge-building machines, and using hydraulic cylinders and control devices to control the expansion and contraction of the rain shelter, the problem of the quality of concrete being affected by rainy weather was solved, and rain protection was provided when needed to ensure the quality of concrete.
Patent Information
- Application Number
- CN202511425961.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2025-11-28
AI Technical Summary
During bridge construction, rainwater can directly wash away the concrete during rainy weather, affecting the quality of the concrete.
Design a telescopic rainproof canopy for a bridge-building machine, including a rainproof cloth, multiple support structures, support columns, and telescopic units. The rainproof cloth is deployed and retracted through hydraulic cylinders and control devices. The deployment and retraction of the rainproof cloth are achieved by using a telescopic rainproof cloth. The deployment and retraction of the rainproof cloth are achieved by using hydraulic cylinders and control devices to control the movement of moving blocks on the travel track, which in turn moves the support columns and support structures to achieve the deployment or retraction of the rainproof cloth.
Provide rain protection for the bridge-building machine when needed. The rain protection uses a rainproof cloth to unfold and retract. The unfolding and retraction of the rainproof cloth is achieved by using hydraulic cylinders and control devices. A telescopic rainproof canopy is used to unfold and retract the rainproof cloth, so as to prevent rainwater from washing away the concrete and ensure the quality of the concrete.
Smart Images
Figure CN121024385A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of bridge construction, in particular to a telescopic rainproof shed for a bridge builder. BACKGROUND
[0002] In the field of bridge construction, the bridge builder, as a crucial construction equipment, plays an irreplaceable role. With the continuous development of bridge construction technology, the bridge builder has gradually become the mainstream choice for bridge site pouring construction due to its unique advantages. It can realize efficient and stable bridge construction by taking a pile cap or a pier column as support. It has the remarkable feature of good construction quality, can ensure the strength and stability of the bridge structure, and provides a solid guarantee for the long-term use of the bridge; the construction operation is simple, which reduces the requirement for the professional skills of the operators and improves the construction efficiency; the cost is low, which effectively controls the construction cost while ensuring the engineering quality. Therefore, the bridge builder has been widely used in the continuous beam construction of highway bridges and railway bridges and has become a relatively advanced construction method.
[0003] During the construction of the bridge builder, if it is raining, rainwater will directly wash away the concrete, affecting the quality of the concrete. SUMMARY
[0004] In order to reduce the influence of sunlight or rainwater on the concrete and improve the quality of the concrete, the application provides a telescopic rainproof shed for a bridge builder.
[0005] The application provides a telescopic rainproof shed for a bridge builder, which adopts the following technical scheme: A telescopic rainproof shed for a bridge builder, comprising a rainproof cloth, a plurality of support structures, support columns and a telescopic unit, the support structure is connected with the rainproof cloth and is used for supporting the rainproof cloth, the support columns are provided in plurality, the support columns are connected with the support structure, the telescopic unit comprises a support frame, a moving device and a control device, the support frame is used for being connected with the bridge builder, the moving device comprises a walking track and a walking group, the walking track is connected with the support frame, the length direction of the walking track is parallel to a first direction x, the walking group comprises a moving block and a first roller, the moving block is connected with the support column, the first roller is rotationally connected with the moving block, the first roller is rollably embedded in a groove of the walking track, the flange of the first roller is gap-fitted with the side wall of the walking track to realize axial limiting, the control device is connected with the moving block and is used for controlling the moving position of the moving block, so as to realize the unfolding or contraction of the rainproof cloth along the first direction x.
[0006] By adopting the above technical solution, when the bridge-building machine needs rain protection, the control device controls the moving block to move on the travel track. The first roller rolls in the groove of the travel track, and the wheel rim is fitted with the side wall of the track to achieve axial limitation, thereby driving the support column and the bracket structure connected to the support column to move, and then causing the rainproof cloth to unfold along the first direction x, providing rain protection for the bridge-building machine. When rain protection is not needed, the control device controls the moving block to move in the opposite direction, causing the rainproof cloth to retract along the first direction x, without occupying too much space.
[0007] Preferably, the control device includes a drive component, a control rod, a rotating shaft, a second roller, a first connecting rod, and a second connecting rod. The control rod is connected to the drive component, and its length is parallel to the first direction x. The control rod has a movable groove and a movable hole, and the movable hole communicates with the movable groove. The length directions of the movable groove and the movable hole are both parallel to the first direction x. The rotating shaft, the second roller, the first connecting rod, and the second connecting rod form a control group. Multiple control groups are provided, and each control group is located between two adjacent moving blocks. The rotating shaft is located in the movable hole. The second roller is sleeved on the rotating shaft and rotatably connected to it. The second roller is located in the movable groove and abuts against the control rod. One end of the first connecting rod is rotatably connected to the rotating shaft, and the other end is rotatably connected to the moving block. One end of the second connecting rod is rotatably connected to the rotating shaft, and the other end is rotatably connected to an adjacent moving block.
[0008] By adopting the above technical solution, the driving component drives the control rod to move, the second roller rolls in the movable groove, and the rotating shaft slides in the movable hole. By utilizing the rotational connection between the first and second connecting rods, the movement of the control rod is converted into the movement of the moving block, thereby controlling the rainproof cloth to unfold or retract along the first direction x, and achieving effective control of the extension and retraction of the rainproof cloth.
[0009] Preferably, the driving component is a hydraulic cylinder, and multiple hydraulic cylinders are provided. Each hydraulic cylinder is connected to a control module, which is used to sequentially activate the multiple hydraulic cylinders along the first direction x when the rainproof cloth is unfolded.
[0010] By adopting the above technical solution, when the rainproof cloth needs to be unfolded, the hydraulic cylinder unfolds sequentially along the first direction x, so that the control rod will have an inclined angle. When the control rod is driven to move, the second roller can move on the control rod, which facilitates the unfolding of the rainproof cloth and reduces the possibility of interference.
[0011] Preferably, the walking track includes a first plate and a second plate, which are spaced apart. The first plate and the second plate have grooves formed on their adjacent sides for the first roller to move. The moving block passes through the gap between the first plate and the second plate and is connected to the first connecting rod and the second connecting rod. When the control rod abuts against the bottom of the moving block, the first connecting rod and the second connecting rod are both in a horizontal state.
[0012] By adopting the above technical solution, the walking track set at intervals between the first plate and the second plate cooperates with the movement of the first roller, so that the moving block connects the first link and the second link, and the second roller abuts against the moving block when the canopy is opened, which can improve the reliability of the canopy in the open state.
[0013] Preferably, the first connecting rod and the second connecting rod are respectively located on both sides of the second roller.
[0014] By adopting the above technical solution, the first connecting rod and the second connecting rod are respectively located on both sides of the second roller, which can make the force on the moving block more uniform, thereby making the rainproof cloth more stable during the unfolding or shrinking process, and improving the performance and reliability of the rainproof canopy.
[0015] Preferably, the device further includes an auxiliary device located at one end of the telescopic unit. The auxiliary device includes a mounting rod, a roller, a first baffle, a second baffle, a rope, and a connecting block. The mounting rod is used to connect with the bridge-building machine. The roller is rotatably connected to the mounting rod. The first baffle and the second baffle are respectively located at both ends of the roller and are both connected to the roller. The rope is wound around the roller. Multiple connecting blocks are provided. Each connecting block is connected to the rotating shaft. A through hole is provided on the connecting block, through which the rope passes. The rope is fixedly connected to the connecting block furthest away. The roller is connected to a drive device that drives its own rotation.
[0016] By adopting the above technical solution, an auxiliary device is set in the retractable rainproof canopy. A rotatable roller is used to wind the rope. The rope passes through the through holes on multiple connecting blocks connected to the rotating shaft and is fixed to the connecting block furthest away. The roller is connected to the drive device, which can help the control device to better control the unfolding and retraction of the rainproof cloth.
[0017] Preferably, the driving device includes a positioning rod, a threaded rod, a sliding block, a sleeve, a first gear, and a second gear. The positioning rod is connected to the bridge-building machine. The threaded rod is hollow and sleeved on the positioning rod, and is slidably connected to the positioning rod. The top end of the threaded rod is hinged to the sliding block, and the sliding block is slidably connected to the control rod. The sleeve is sleeved on the threaded rod and is rotatably connected to the mounting rod. The first gear is sleeved on the sleeve, and the second gear is connected to the roller and meshes with the first gear.
[0018] By adopting the above technical solution, during the use of the retractable rainproof canopy, the positioning rod is connected to the bridge-building machine for fixation. The hollow threaded rod is slidably fitted onto the positioning rod, and its top end is hinged to a sliding block that slides on the control rod. When the control rod moves, it drives the sliding block to slide, thereby causing the threaded rod to slide on the positioning rod. A sleeve is fitted onto the threaded rod and rotatably connected to the installation rod. The first gear is fitted onto the sleeve, and the second gear is connected to the roller and meshes with the first gear. In this way, the sliding of the threaded rod drives the first gear to rotate through the sleeve, and the first gear then drives the second gear to rotate, thereby driving the roller to rotate, realizing the winding and unwinding of the rope, and assisting in the unfolding or retraction of the rainproof cloth.
[0019] Preferably, the support structure includes a crossbeam, a support frame, a first support rod, a second support rod, a third support rod, and a fourth support rod. The crossbeam is connected to the support column, and the length direction of the crossbeam is perpendicular to the first direction x. The support frame is connected to the crossbeam and to the rainproof cloth. The first support rod, the second support rod, and the third support rod form a reinforcement group. Multiple reinforcement groups are provided, all located between the crossbeam and the support frame. The first support rod, the second support rod, and the third support rod are distributed along the length direction of the crossbeam. One end of the first support rod is connected to the crossbeam, and the other end is connected to the support frame. One end of the second support rod is connected to the crossbeam, and the other end is connected to the support frame. One end of the third support rod is connected to the crossbeam, and the other end is connected to the support frame. The second and third support rods are both inclined in opposite directions. Multiple fourth support rods are provided, located at both ends of the support frame. One end of the fourth support rod is connected to one end of the support frame, and the other end is connected to the crossbeam.
[0020] By adopting the above technical solutions, the addition of multiple reinforcement groups and a fourth support rod enhances the connection strength between the support frame and the crossbeam, improves the stability of the support structure, and thus provides more stable support for the rainproof cloth.
[0021] In summary, the present invention has the following beneficial effects: When the bridge-building machine needs rain protection, the control device controls the moving block to move on the travel track. The first roller rolls in the groove of the travel track, and the wheel rim is fitted with the side wall of the track to achieve axial limitation, thereby driving the support column and the bracket structure connected to the support column to move, so that the rainproof cloth unfolds along the first direction x, providing rain protection for the bridge-building machine. When rain protection is not needed, the control device controls the moving block to move in the opposite direction, so that the rainproof cloth retracts along the first direction x, without occupying too much space. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a retractable rainproof canopy used for bridge building machines.
[0023] Figure 2 This is a side view of a retractable rain shelter.
[0024] Figure 3 This is a front view of a retractable rain shelter.
[0025] Figure 4 This is a structural diagram of the mobile device and the control device.
[0026] Figure 5 This is a schematic diagram showing the location of the connecting block.
[0027] Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle.
[0028] Explanation of reference numerals in the attached figures: 1. Rainproof tarpaulin; 2. Support structure; 21. Crossbeam; 22. Support frame; 23. First support rod; 24. Second support rod; 25. Third support rod; 26. Fourth support rod; 3. Support column; 4. Support frame; 41. Fixed rod; 42. Support rod; 5. Moving device; 51. Traveling track; 511. First plate; 512. Second plate; 52. Moving block; 521. Locking block; 53. First roller; 6. Control device; 61. Hydraulic cylinder; 62. Control rod; 621. Movable groove 622. Movable hole; 623. Sliding groove; 63. Rotating shaft; 64. Second roller; 65. First connecting rod; 66. Second connecting rod; 7. Auxiliary device; 71. Mounting rod; 72. Roller; 721. Shaft; 73. First baffle; 74. Second baffle; 75. Rope; 76. Connecting block; 761. Through hole; 8. Drive device; 81. Positioning rod; 82. Threaded rod; 83. Sliding block; 84. Sleeve; 85. First gear; 86. Second gear; 9. Fixing frame. Detailed Implementation
[0029] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0030] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.
[0031] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.
[0032] A retractable rainproof canopy for bridge-building machines, as shown in the reference. Figure 1 and Figure 2 The system includes a rainproof tarpaulin 1, multiple sets of support structures 2, support columns 3, and telescopic units. The support structures 2 are connected to the rainproof tarpaulin 1, and the multiple sets of support structures 2 are distributed along a first direction x. Multiple support columns 3 are provided, with each support structure 2 connected to two support columns 3; the multiple support columns 3 distributed along the first direction x form a group. Two telescopic units are provided, each corresponding to one of the two groups of support columns 3. Each telescopic unit includes a support frame 4, a moving device 5, and a control device 6. The support frame 4 is used to connect to the bridge-building machine, and the moving device 5 is connected to the support frame 4. The moving device 5 includes a traveling track 51 and multiple traveling groups. The traveling track 51 is connected to the support frame 4, and its length direction is parallel to the first direction x. The multiple traveling groups are distributed along the first direction x. The traveling assembly includes a moving block 52 and a first roller 53. The moving block 52 is fixedly connected to the support column 3, and the first roller 53 is rotatably connected to the moving block 52. The first roller 53 is rollably fitted into the groove of the traveling track 51, and the rim of the first roller 53 is clearance-fitted with the side wall of the traveling track 51 to achieve axial positioning.
[0033] Reference Figure 2The control device 6 is connected to the moving block 52. By controlling the moving position of the moving block 52, the rainproof cloth 1 can be unfolded or retracted along the first direction x. This can provide timely protection for the concrete being constructed by the bridge-building machine when needed, avoiding direct sunlight and rain erosion, and ensuring the quality of the concrete.
[0034] Reference Figure 2 The support structure 2 includes a crossbeam 21, a support frame 22, a first support rod 23, a second support rod 24, a third support rod 25, and a fourth support rod 26. The crossbeam 21 is fixedly connected to the top of the support column 3, and the length direction of the crossbeam 21 is perpendicular to the first direction x. The support frame 22 is fixedly connected to the crossbeam 21, and the top of the support frame 22 is fixedly connected to the rainproof cloth 1.
[0035] Reference Figure 2 The first support rod 23, the second support rod 24, and the third support rod 25 form a reinforcement group. Multiple reinforcement groups are provided, all spaced apart between the crossbeam 21 and the support frame 22, along the length of the crossbeam 21. Within the same reinforcement group, the first support rod 23, the second support rod 24, and the third support rod 25 are sequentially distributed along the length of the crossbeam 21. One end of the first support rod 23 is connected to the crossbeam 21, and the other end is connected to the support frame 22; one end of the second support rod 24 is connected to the crossbeam 21, and the other end is connected to the support frame 22; one end of the third support rod 25 is connected to the crossbeam 21, and the other end is connected to the support frame 22. The second support rod 24 and the third support rod 25 are both inclined in opposite directions. This structure enhances the stability of the support structure 2 and distributes the stress.
[0036] Reference Figure 2 Multiple fourth support rods 26 are inclinedly arranged and located at both ends of the support frame 22. One end of the fourth support rod 26 is connected to one end of the support frame 22, and the other end is connected to the crossbeam 21.
[0037] These support rods work together to support the rainproof cloth 1, ensuring the stability of the rainproof cloth 1 during the unfolding and retraction process.
[0038] Reference Figure 3 The support frame 4 includes a fixed rod 41 and support rods 42. The length direction of the fixed rod 41 is parallel to the first direction x. Multiple support rods 42 are vertically arranged. The top of the support rods 42 is fixedly connected to the fixed rod 41, and the support rods 42 are spaced apart along the length direction of the fixed rod 41. The bottom of the support rods 42 is fixed to the bridge-building machine.
[0039] Reference Figure 4The movable block 52 is rotatably connected to both sides of a first roller 53. The traveling track 51 includes a first plate 511 and a second plate 512, both of which are C-shaped. Grooves for the first rollers 53 to move are formed on the adjacent sides of the first plate 511 and the second plate 512. The movable block 52 passes through the gap between the first plate 511 and the second plate 512 and is connected to the control device 6.
[0040] Reference Figure 4 The moving block 52 closest to the beginning of the first direction x is fixedly connected to a locking block 521, which is fixedly connected to the control rod 62 and is used to fix one end of the rainproof cloth 1.
[0041] Reference Figure 4 The control device 6 includes a drive component, a control lever 62, a rotating shaft 63, a second roller 64, a first connecting rod 65, and a second connecting rod 66. The drive component is a hydraulic cylinder 61, of which multiple cylinders are provided, each with its bottom end fixedly connected to the bridge-building machine. The control lever 62 is horizontally positioned and hinged to the hydraulic cylinders 61, with its length direction parallel to the first direction x. The hydraulic cylinders 61 are electrically connected to a control module, which is used to sequentially activate the multiple hydraulic cylinders 61 along the first direction x when the rainproof cloth 1 is unfolded. In this embodiment, two hydraulic cylinders 61 are provided.
[0042] Reference Figure 4 The control lever 62 has a movable groove 621 at its top and a movable hole 622 on its side wall, which communicates with the movable groove 621. The length directions of both the movable groove 621 and the movable hole 622 are parallel to the first direction x. The rotating shaft 63, the second roller 64, the first connecting rod 65, and the second connecting rod 66 form a control group, which is located between two adjacent moving blocks 52. Multiple control groups are provided.
[0043] Reference Figure 4 A rotating shaft 63 is located within a movable hole 622 and passes through a movable groove 621. The rotating shaft 63 is slidably connected to the control rod 62. A second roller 64 is located within the movable groove 621 and is sleeved on the rotating shaft 63. The second roller 64 is rotatably connected to the rotating shaft 63. The second roller 64 rolls against the control rod 62.
[0044] The sequential activation of hydraulic cylinders 61 causes the control lever 62 to form an angle with the horizontal direction. At this time, hydraulic cylinders 61 push the control lever 62 upward, making it easier for the second roller 64 to roll.
[0045] Reference Figure 4One end of the first connecting rod 65 is rotatably connected to the rotating shaft 63, and the other end is rotatably connected to the bottom end of the moving block 52. One end of the second connecting rod 66 is rotatably connected to the rotating shaft 63, and the other end is rotatably connected to the bottom end of the moving block 52. The first connecting rod 65 and the second connecting rod 66 are respectively located on both sides of the second roller 64, and the first connecting rod 65 and the second connecting rod 66 are respectively located on both sides of the moving block 52. When the bottom of the moving block 52 abuts against the control rod 62, the first connecting rod 65 and the second connecting rod 66 are in a horizontal state.
[0046] When the driving component is activated, the control lever 62 moves accordingly. Through the linkage of the second roller 64, the rotating shaft 63, the first connecting rod 65, and the second connecting rod 66, the moving block 52 moves on the traveling track 51, thereby realizing the unfolding or retraction of the rainproof cloth 1.
[0047] Reference Figure 5 and Figure 6 It also includes auxiliary devices 7, of which two sets are provided, each corresponding to one of the two sets of telescopic units. The auxiliary devices 7 are located at one end of the corresponding telescopic unit and include a mounting rod 71, a roller 72, a first baffle 73, a second baffle 74, a rope 75, and a connecting block 76. The mounting rod 71 is used to connect to the bridge-building machine and is generally fixed with bolts. The roller 72 is rotatably connected to the mounting rod 71 via a shaft 721, and the rope 75 is wound around the roller 72. The first baffle 73 and the second baffle 74 are respectively located at both ends of the roller 72 and are both fixedly connected to the roller 72 to prevent the rope 75 from slipping off the roller 72.
[0048] Reference Figure 5 and Figure 6 Multiple connecting blocks 76 are provided, and each connecting block 76 corresponds to a rotating shaft 63. The connecting blocks 76 and rotating shafts 63 are fixedly connected. A through hole 761 is provided on the connecting block 76, through which a rope 75 passes, and the rope 75 is fixedly connected to the connecting block 76 furthest away.
[0049] When it is necessary to shrink the rainproof cloth 1, the rope 75 pulls the connecting block 76 furthest away from it to assist in the shrinkage of the rainproof cloth 1.
[0050] Reference Figure 5 and Figure 6 The roller 72 is connected to a drive device 8 that drives its own rotation. The drive device 8 includes a positioning rod 81, a threaded rod 82, a sliding block 83, a sleeve 84, a first gear 85, and a second gear 86. The positioning rod 81 is used for fixed connection with the bridge-building machine. The threaded rod 82 is hollow and is sleeved on the positioning rod 81, and is slidably connected with the positioning rod 81.
[0051] Reference Figure 6The control lever 62 has a sliding groove 623 at its bottom. A sliding block 83 is located in the sliding groove 623 and is slidably connected to the control lever 62. The top of the threaded rod 82 is hinged to the sliding block 83. A sleeve 84 is fitted onto the threaded rod 82. A fixing bracket 9 is fixedly connected to the mounting rod 71. The fixing bracket 9 is fitted onto the sleeve 84 and is rotatably connected to the sleeve 84. A first gear 85 is fitted onto the sleeve 84 and is fixedly connected to the sleeve 84. A second gear 86 is fitted onto the shaft 721 of the roller 72 and meshes with the first gear 85.
[0052] When the rainproof cloth 1 needs to be retracted, multiple hydraulic cylinders 61 are activated simultaneously. The hydraulic cylinders 61 drive the control lever 62 to maintain a horizontal state and move downwards. Through the sliding block 83 and the threaded rod 82, the sleeve 84 is driven to rotate. The sleeve 84 drives the first gear 85 to rotate. The first gear 85 drives the second gear 86 to rotate. The second gear 86 drives the roller 72 to rotate, thereby causing the rope 75 to pull the connecting block 76 furthest away from it, assisting in the retraction of the rainproof cloth 1.
[0053] The operating principle of this application is as follows: The telescopic rain shelter of this embodiment realizes the unfolding and retraction of the rainproof cloth 1 through the telescopic unit. When it is necessary to protect the concrete, the control device 6 controls the moving block 52 to move along the walking track 51, driving the rainproof cloth 1 to unfold and provide protection for the concrete; when protection is not needed, the control device 6 controls the moving block 52 to move in the opposite direction, causing the rainproof cloth 1 to retract. The auxiliary device 7 further enhances the stability and reliability of the retraction of the rainproof cloth 1.
[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A retractable rainproof canopy for a bridge-building machine, characterized in that: The system includes a rainproof cloth (1), multiple sets of support structures (2), support columns (3), and a telescopic unit. The support structures (2) are connected to the rainproof cloth (1) and are used to support the rainproof cloth (1). Multiple support columns (3) are provided and are connected to the support structures (2). The telescopic unit includes a support frame (4), a moving device (5), and a control device (6). The support frame (4) is used to connect to the bridge-building machine. The moving device (5) includes a walking track (51) and a walking assembly. The walking track (51) is connected to the support frame (4). The length direction of the walking track (51) is perpendicular to the first direction. The walking assembly includes a moving block (52) and a first roller (53). The moving block (52) is connected to the support column (3). The first roller (53) is rotatably connected to the moving block (52). The first roller (53) is rotatably fitted into the groove of the walking track (51). The rim of the first roller (53) is clearance-fitted with the side wall of the walking track (51) to achieve axial limiting. The control device (6) is connected to the moving block (52) and is used to control the moving position of the moving block (52) to realize the unfolding or shrinking of the rainproof cloth (1) along the first direction x.
2. The retractable rainproof canopy for a bridge-building machine according to claim 1, characterized in that: The control device (6) includes a drive component, a control rod (62), a rotating shaft (63), a second roller (64), a first connecting rod (65), and a second connecting rod (66). The control rod (62) is connected to the drive component. The length of the control rod (62) is parallel to the first direction x. The control rod (62) has a movable groove (621) and a movable hole (622). The movable hole (622) communicates with the movable groove (621). The length direction of the movable groove (621) and the length direction of the movable hole (622) are both parallel to the first direction x. The rotating shaft (63), the second roller (64), the first connecting rod (65), and the second connecting rod (66) are connected to the drive component. The rods (66) form a control group, and multiple control groups are provided. The control group is located between two adjacent moving blocks (52). The rotating shaft (63) is located in the movable hole (622). The second roller (64) is sleeved on the rotating shaft (63) and rotatably connected to the rotating shaft (63). The second roller (64) is located in the movable groove (621) and abuts against the control rod (62). One end of the first connecting rod (65) is rotatably connected to the rotating shaft (63) and the other end is rotatably connected to the moving block (52). One end of the second connecting rod (66) is rotatably connected to the rotating shaft (63) and the other end is rotatably connected to the adjacent moving block (52).
3. A retractable rainproof canopy for a bridge-building machine according to claim 2, characterized in that: The driving component is a hydraulic cylinder (61), and multiple hydraulic cylinders (61) are provided. Each hydraulic cylinder (61) is connected to a control module. The control module is used to start multiple hydraulic cylinders (61) sequentially along the first direction x when the rainproof cloth (1) is unfolded.
4. A retractable rainproof canopy for a bridge-building machine according to claim 2, characterized in that: The walking track (51) includes a first plate (511) and a second plate (512). The first plate (511) and the second plate (512) are spaced apart. The first plate (511) and the second plate (512) have grooves formed on the sides of the first plate (511) and the second plate (512) that are close to each other, for the first roller (53) to move. The moving block (52) passes through the gap between the first plate (511) and the second plate (512) and is connected to the first connecting rod (65) and the second connecting rod (66). When the control rod (62) abuts against the bottom of the moving block (52), the first connecting rod (65) and the second connecting rod (66) are both in a horizontal state.
5. A retractable rainproof canopy for a bridge-building machine according to claim 4, characterized in that: The first connecting rod (65) and the second connecting rod (66) are respectively located on both sides of the second roller (64).
6. A retractable rainproof canopy for a bridge-building machine according to claim 2, characterized in that: It also includes an auxiliary device (7) located at one end of the telescopic unit. The auxiliary device (7) includes a mounting rod (71), a roller (72), a first baffle (73), a second baffle (74), a rope (75), and a connecting block (76). The mounting rod (71) is used to connect with the bridge-building machine. The roller (72) is rotatably connected to the mounting rod (71). The first baffle (73) and the second baffle (74) are respectively located on the roller (72). Both ends are connected to the roller (72). The rope (75) is wound around the roller (72). Multiple connecting blocks (76) are provided. The connecting blocks (76) are connected to the rotating shaft (63). A through hole (761) is opened on the connecting block (76). The rope (75) passes through the through hole (761). The rope (75) is fixedly connected to the connecting block (76) at the farthest distance. The roller (72) is connected to a driving device (8) that drives itself to rotate.
7. A retractable rainproof canopy for a bridge-building machine according to claim 6, characterized in that: The driving device (8) includes a positioning rod (81), a threaded rod (82), a sliding block (83), a sleeve (84), a first gear (85), and a second gear (86). The positioning rod (81) is connected to the bridge-building machine. The threaded rod (82) is hollow and is sleeved on the positioning rod (81) and slidably connected to the positioning rod (81). The top end of the threaded rod (82) is hinged to the sliding block (83). The sliding block (83) is slidably connected to the control rod (62). The sleeve (84) is sleeved on the threaded rod (82) and rotatably connected to the mounting rod (71). The first gear (85) is sleeved on the sleeve (84). The second gear (86) is connected to the roller (72) and meshes with the first gear (85).
8. A retractable rainproof canopy for a bridge-building machine according to claim 1, characterized in that: The support structure (2) includes a crossbeam (21), a support frame (22), a first support rod (23), a second support rod (24), a third support rod (25), and a fourth support rod (26). The crossbeam (21) is connected to the support column (3), and the length direction of the crossbeam (21) is perpendicular to the first direction x. The support frame (22) is connected to the crossbeam (21) and to the rainproof cloth (1). The first support rod (23), the second support rod (24), and the third support rod (25) form a reinforcement group. Multiple reinforcement groups are provided, all located between the crossbeam (21) and the support frame (22). The first support rod (23), the second support rod (24), and the third support rod (25) are along... The crossbeams (21) are distributed along their length. One end of the first support rod (23) is connected to the crossbeam (21) and the other end is connected to the support frame (22). One end of the second support rod (24) is connected to the crossbeam (21) and the other end is connected to the support frame (22). One end of the third support rod (25) is connected to the crossbeam (21) and the other end is connected to the support frame (22). The second support rod (24) and the third support rod (25) are both inclined and in opposite directions. There are multiple fourth support rods (26), which are located at both ends of the support frame (22). One end of the fourth support rod (26) is connected to one end of the support frame (22) and the other end is connected to the crossbeam (21).