A seamless butt casting system for assembled bridge construction

Abstract

The present invention discloses a seamless butt casting system for assembled bridge construction, which belongs to the technical field of bridge construction. The present invention comprises a vehicle body, a casting mechanism and a clamping mechanism, wherein the casting mechanism is arranged on the vehicle body and is used to cast concrete into the expansion joint of the bridge; the clamping mechanism is arranged at the front end of the vehicle body and is used to clamp the two ends of the expansion joint of the bridge, so as to facilitate the subsequent concrete casting. The whole operation process is simple and convenient, and no manual blocking is required, which greatly improves the work efficiency of the whole construction.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and more specifically, to a seamless casting system for prefabricated bridge structures. Background Technology

[0002] When constructing bridges, expansion joints are typically installed between the ends of two beams and between the beam ends and the abutments. These expansion joints must be able to expand and contract freely in both directions parallel and perpendicular to the bridge axis, be robust and reliable, provide a smooth ride without bumps or noise, and prevent rainwater, debris, and soil from seeping in and causing blockages. Current technology addresses this by pouring concrete into the expansion joints, typically using concrete mixer trucks or concrete transport trucks. However, concrete transport trucks are not ideal for pouring concrete directly into the expansion joints, requiring secondary concrete handling. Furthermore, the ends of the expansion joints need to be manually sealed before pouring, making the entire process cumbersome, time-consuming, and inefficient. Further improvements are needed.

[0003] A search revealed Chinese patent number ZL201920306821.6, entitled "Invention Title: Sealing Device for Pre-reserved Toothed Expansion Joints in Bridge Cast-in-Place Construction." This application involves a support frame, four casters, a drive structure, a casting box, a storage chamber, a discharge hopper, a sealing structure, and three push-pull structures. The four casters are located at the four corners of the bottom of the support frame. The drive structure includes a rocker arm and a transmission block. The transmission block is slidably connected to the support frame. The rocker arm is connected through the support frame and the transmission block, and is rotatably connected to the support frame. The rocker arm is threadedly connected to the transmission block. The casting box is fixed to the transmission block and slidably connected to the support frame. The storage chamber for storing concrete is located inside the casting box.

[0004] Although the aforementioned application can achieve the pouring of expansion joints, it is still necessary to manually seal both ends of the expansion joints before pouring, making the entire operation process relatively complicated and the construction efficiency low. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve

[0006] The purpose of this invention is to solve the problem that the two ends of the expansion joint still need to be manually sealed when using bridge seamless joint casting equipment. This invention proposes a prefabricated bridge construction seamless joint casting system. The invention has a casting mechanism and a clamping mechanism on the vehicle body. The clamping mechanism is used to seal the two ends of the bridge expansion joint, and the casting mechanism is used to transport concrete, thereby realizing the casting of the bridge expansion joint. This process eliminates the need for manual sealing and greatly improves the overall construction efficiency.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0009] The present invention discloses a seamless casting system for prefabricated bridge construction, comprising a vehicle body, a casting mechanism, and a clamping mechanism, wherein the casting mechanism is mounted on the vehicle body; the clamping mechanism is located at the front end of the vehicle body and is used to clamp both ends of the bridge expansion joint.

[0010] As a further improvement of the present invention, the clamping mechanism includes a sliding plate disposed at the front end of the vehicle body, the sliding plate being located in a slide groove and moving up and down along the slide groove; a connecting plate is vertically connected to one end of the sliding plate extending out of the slide groove, and a vertical plate is provided on each end of the connecting plate on the side opposite to the sliding plate; two guide rods are disposed between the vertical plates, the two guide rods being parallel to each other and located on the same horizontal plane; two movable plates are disposed on the guide rods, and the two movable plates move relative to each other; a clamping plate is connected to the bottom surface of the movable plate, and the clamping plate is located between the two guide rods.

[0011] As a further improvement of the present invention, a sliding sleeve is provided on the bottom surface of the movable plate, and the sliding sleeve is fitted onto the guide rod.

[0012] As a further improvement of the present invention, a rotating plate is provided above the middle position of the two guide rods, and a hinge rod is hinged to each of the two side walls of the rotating plate. The hinge rod is hinged to the moving plate. A clamping shaft is connected to the rotating plate, and the clamping shaft is driven by a clamping motor.

[0013] As a further improvement of the present invention, the slide groove is provided with a lead screw that is movably connected to the inner wall of the slide groove. The lead screw is arranged along the height direction of the vehicle body, the slide plate is arranged on the lead screw, and the lead screw is driven by an adjusting motor.

[0014] As a further improvement of the present invention, the pouring mechanism includes a pouring hose, a feeding pipe and a guide pipe, wherein the guide pipe is disposed inside the vehicle body; one end of the guide pipe is connected to the pouring hose, and the pouring hose is located at the front end of the vehicle body; the feeding pipe is perpendicular to the other end of the guide pipe, the feeding pipe is connected to the guide pipe, and the top end of the feeding pipe extends to the outside of the vehicle body.

[0015] As a further improvement of the present invention, a casting shaft is provided inside the guide tube, the casting shaft is coaxially arranged with the guide tube, and a spiral blade is provided on the casting shaft, the spiral blade being spirally arranged along the length direction of the guide tube.

[0016] As a further improvement of the present invention, the end of the casting shaft away from the casting hose extends to the outside of the guide tube, and a casting motor is provided on the extended end.

[0017] As a further improvement of the present invention, a filling mechanism is also included, which is located in the bridge expansion joint. The filling mechanism includes a rubber plate and I-beams. The rubber plate is arranged along the length direction of the bridge expansion joint, and multiple I-beams are provided, with the multiple I-beams distributed on both sides of the rubber plate.

[0018] As a further improvement of the present invention, the rubber sheet is of the same length and height as the bridge expansion joint; and multiple I-beams located on the same side of the rubber sheet are equally spaced.

[0019] 3. Beneficial effects

[0020] Compared with existing known technologies, the technical solution provided by this invention has the following beneficial effects:

[0021] (1) The present invention provides a prefabricated bridge construction seamless connection casting system, which is provided with a casting mechanism and a clamping mechanism on the vehicle body. The clamping mechanism is used to seal the two ends of the bridge expansion joint, and the casting mechanism is used to deliver concrete, thereby realizing the casting of the bridge expansion joint. This process eliminates the need for manual sealing, which greatly improves the overall construction efficiency.

[0022] (2) The present invention provides a seamless casting system for prefabricated bridge construction. According to the actual on-site construction conditions, the sliding plate on the clamping mechanism is controlled to move up and down, that is, the connecting plate, vertical plate, clamping plate and other components are controlled to move up and down as a whole. After reaching the required position, the two moving plates are controlled to move relative to each other. The two clamping plates are used to seal the two ends of the bridge expansion joint. The whole operation process is simple and convenient and takes little time.

[0023] (3) A prefabricated bridge construction seamless casting system of the present invention provides a sliding sleeve on the bottom surface of the moving plate. When the moving plate moves, the sliding sleeve limits its movement direction, thereby facilitating the clamping plate to accurately clamp both ends of the bridge expansion joint.

[0024] (4) The prefabricated bridge construction seamless casting system of the present invention drives the clamping shaft to rotate by the clamping motor, which drives the rotating plate to rotate. Under the action of the hinge and the hinge rod, the relative movement of the two moving plates is realized. The whole process is driven by the motor, which has a high degree of automation and effectively improves the overall construction efficiency.

[0025] (5) The present invention provides a seamless casting system for prefabricated bridge construction. The mixed concrete is fed into the inner cavity of the guide pipe through the feeding pipe. The casting motor is started and the casting motor drives the casting shaft to rotate. The casting shaft drives the spiral blade to rotate. Under the action of the spiral blade, the concrete in the inner cavity of the guide pipe moves towards the casting hose and fills the bridge expansion joint through the casting hose. The entire casting mechanism is efficient and convenient in the transportation process. When casting is not being carried out, the internal concrete can be discharged, which can avoid the concrete from solidifying in the casting mechanism and causing the entire system to become unusable.

[0026] (6) The present invention provides a seamless connection casting system for prefabricated bridge construction. By pre-placing the filling mechanism in the bridge expansion joint, concrete is poured into the space between the rubber plate and the bridge through the pouring hose, so as to achieve seamless connection between the bridges and prevent garbage and other items from entering the bridge gaps, thus eliminating the need to clean up garbage. In addition, the rubber plate provides a certain buffer space between the bridges in the longitudinal and transverse directions, thereby adapting to the problem of the bridge expanding and contracting due to changes in the external environment. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a seamless casting system for prefabricated bridge construction according to the present invention.

[0028] Figure 2 This is a schematic diagram of the vehicle body structure in this invention;

[0029] Figure 3 This is a schematic diagram of the casting mechanism in this invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the guide tube in this invention;

[0031] Figure 5 This is a schematic diagram of the clamping mechanism in this invention;

[0032] Figure 6 This is a schematic diagram of the clamping plate in this invention;

[0033] Figure 7 This is a schematic diagram of the filling mechanism located at the expansion joint in this invention;

[0034] Figure 8 This is a schematic diagram of the positional connection between the vertical plate and the clamping plate in this invention.

[0035] Explanation of the labels in the diagram:

[0036] 10. Vehicle body;

[0037] 20. Pouring mechanism; 210. Pouring hose; 220. Placement trough; 230. Feeding pipe; 240. Guide pipe; 250. Pouring shaft; 260. Pouring motor; 270. Spiral blade;

[0038] 30. Clamping mechanism; 310. Slide groove; 311. Lead screw; 312. Adjusting motor; 320. Slide plate; 321. Connecting plate; 322. Vertical plate; 330. Guide rod; 340. Moving plate; 341. Sliding sleeve; 342. Clamping plate; 350. Hinge rod; 360. Rotating plate; 370. Clamping shaft; 380. Clamping motor; 390. Bracket;

[0039] 40. Filling mechanism; 410. Rubber sheet; 420. I-beam. Detailed Implementation

[0040] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0041] Example 1

[0042] This embodiment presents a seamless casting system for prefabricated bridge construction, such as... Figure 1 As shown, the bridge includes a vehicle body 10, a pouring mechanism 20, and a clamping mechanism 30. The pouring mechanism 20 is mainly located inside the vehicle body 10 and is used to pour concrete into the expansion joints of the bridge. The clamping mechanism 30 is located at the front end of the vehicle body 10 and is used to clamp the two ends of the bridge expansion joint and form a filling space, so as to facilitate the pouring mechanism 20 to fill the space with concrete.

[0043] Combination Figure 2 , Figure 3 and Figure 4In this embodiment, the pouring mechanism 20 includes a pouring hose 210 disposed at the front end of the vehicle body 10 and a guide pipe 240 disposed inside the vehicle body 10 and communicating with the pouring hose 210. The guide pipe 240 is hollow inside and its axis is parallel to the traveling direction of the vehicle body 10. A vertically upward-extending feeding pipe 230 is provided at the end of the guide pipe 240 away from the pouring hose 210. The top end of the feeding pipe 230 extends to the outside. In this embodiment, the feeding pipe 230 is connected to the inner cavity of the guide pipe 240, thereby facilitating the conveying of concrete. To facilitate the conveying of concrete in the guide pipe 240... In this embodiment, a pouring shaft 250 is coaxially arranged inside the guide tube 240. One end of the pouring shaft 250 extends to the end of the guide tube 240 near the pouring hose 210, and the other end of the pouring shaft 250 passes through the guide tube 240 and extends out. A pouring motor 260 is coaxially arranged at the extended end of the pouring shaft 250, which is used to control the rotation of the pouring shaft 250. A spiral blade 270 is coaxially sleeved at the end of the pouring shaft 250 located inside the guide tube 240. The spiral blade 270 is spirally arranged along the length direction of the guide tube 240, such as... Figure 4 As shown. In this embodiment, the pouring motor 260 is controlled by the vehicle body 10.

[0044] When pouring is required, the mixed concrete is fed into the inner cavity of the guide pipe 240 through the feeding pipe 230, and the pouring motor 260 is started. The pouring motor 260 drives the pouring shaft 250 to rotate, that is, controls the spiral blade 270 on the pouring shaft 250 to rotate. During the rotation of the spiral blade 270, the concrete located in the inner cavity of the guide pipe 240 moves towards the pouring hose 210, thereby filling the bridge expansion joint through the pouring hose 210.

[0045] Combination Figure 2 and Figure 5 The clamping mechanism 30 of this embodiment includes a slide groove 310 opened at the center of the front end of the vehicle body 10. The slide groove 310 is arranged along the height direction of the vehicle body 10. A lead screw 311 is arranged in the slide groove 310 and is movably connected to the inner wall of the slide groove 310. The lead screw 311 is parallel to the slide groove 310. In this embodiment, an adjusting motor 312 is provided at one end of the lead screw 311. The adjusting motor 312 is used to drive the lead screw 311 to rotate. A sliding plate 320 is sleeved on the outside of the lead screw 311. The sliding plate 320 can move along the length direction of the lead screw 311, that is, the sliding plate 320 moves along the direction in which the slide groove 310 is opened.

[0046] like Figure 2 As shown, in this embodiment, the skateboard 320 is positioned parallel to the traveling direction of the vehicle body 10 and extends out of the slide groove 310, combined with... Figure 5In this embodiment, a connecting plate 321 is horizontally arranged at the extended end of the slide plate 320. The connecting plate 321 is perpendicular to the slide plate 320, and its two ends are symmetrical about the slide plate 320. On each side of the connecting plate 321 away from the slide plate 320, there is a vertically extending downward vertical plate 322. In this embodiment, two guide rods 330 are arranged between the two vertical plates 322. The two guide rods 330 are parallel to each other and located on the same horizontal plane. In this embodiment, a movable plate 340 is arranged on the two guide rods 330, and several sliding sleeves 341 are arranged on the bottom surface of the movable plate 340. Figure 6 As shown, the sliding sleeve 341 is fitted onto the guide rod 330, thereby facilitating control of the direction of movement of the moving plate 340. In addition, a clamping plate 342 extending vertically downward is provided on the bottom surface of the moving plate 340. The clamping plate 342 is perpendicular to the guide rod 330 and is located between the two guide rods 330.

[0047] It is worth noting that the two guide rods 330 in this embodiment are equipped with two movable plates 340. By controlling the relative movement of the two movable plates 340, that is, controlling the clamping plates 342 to move closer or further away from each other, the two ends of the bridge expansion joint can be sealed.

[0048] In this embodiment, to facilitate control of the movement of the two movable plates 340, a rotating plate 360 ​​is provided above the middle position of the two guide rods 330. In this embodiment, a hinge rod 350 is hinged to each of the two side walls of the rotating plate 360, such as... Figure 5 As shown, the other end of the hinge rod 350 is hinged to the movable plate 340 on the side facing the rotating plate 360. It is worth noting that the hinge point between the hinge rod 350 and the rotating plate 360 ​​is located at the center of one side of the rotating plate 360.

[0049] Furthermore, in this embodiment, a vertically extending clamping shaft 370 is provided at the center of the top surface of the rotating plate 360. A clamping motor 380 is coaxially mounted at the top end of the clamping shaft 370. The clamping motor 380 is used to drive the clamping shaft 370 to rotate, thereby driving the rotating plate 360 ​​to rotate, and thus controlling the movement of the two moving plates 340 on the guide rod 330. In this embodiment, a bracket 390 is provided on the clamping motor 380, and the bracket 390 is fixedly connected to the connecting plate 321.

[0050] Furthermore, in this embodiment, a placement groove 220 for placing the pouring hose 210 is provided at the front end of the vehicle body 10. A clamping clip for holding the pouring hose 210 is provided in the placement groove 220. By clamping the pouring hose 210 with the clamping clip, the pouring hose 210 can be prevented from falling off.

[0051] Example 2

[0052] This embodiment of a seamless casting system for prefabricated bridge construction is basically the same as that in Embodiment 1, but further includes a filling mechanism 40, such as... Figure 7 As shown, the filling mechanism 40 is located in the bridge expansion joint and serves as a buffer to facilitate the expansion and contraction of the bridge caused by external environmental factors. In this embodiment, the filling mechanism 40 includes a rubber plate 410 and I-beams 420. The rubber plate 410 is arranged along the length of the bridge expansion joint and is of equal length and height to the expansion joint. Multiple I-beams 420 are provided on both sides of the rubber plate 410, with equal intervals between I-beams 420 on the same side.

[0053] It is worth noting that in this embodiment, one end of the I-beam 420 is located in the rubber plate 410, and the other end is located in the gap between the rubber plate 410 and the bridge. When pouring concrete, the concrete fills the gap between the filling mechanism 40 and the expansion joint, thereby fixing the filling mechanism 40 in the bridge expansion joint, so that there is a certain buffer space between the bridges in the longitudinal and transverse directions, which facilitates the subsequent functioning of the filling mechanism 40.

[0054] This embodiment describes a seamless casting system for prefabricated bridge construction. The working process is as follows: First, the filling mechanism 40 is placed within the bridge joint, supported by the bridge piers at the lower end of the bridge. Then, the vehicle body 10 is moved so that the clamping mechanism 30 is positioned above the bridge expansion joint. At this point, the adjusting motor 312 is activated, driving the lead screw 311 to rotate. Simultaneously, the lead screw 311 rotates, causing the sliding plate 320 to slide downwards, thus moving components such as the connecting plate 321, vertical plate 322, guide rod 330, and moving plate 340 downwards. Once the desired position is reached, the system is activated... A clamping motor 380 drives the clamping shaft 370 to rotate, which in turn drives the rotating plate 360 ​​to rotate. Under the action of the hinge rod 350, the two moving plates 340 move closer to each other, and the two clamping plates 342 close the openings at both ends of the bridge expansion joint. Finally, concrete is poured between the rubber plate 410 and the bridge expansion joint through the pouring hose 210, and then smoothed to make the concrete flush with the bridge surface, thereby achieving a seamless connection between the bridges and preventing garbage and other items from entering the bridge expansion joint, eliminating the need for cleaning. The entire operation process is simple, convenient, and highly efficient.

[0055] In this embodiment, the adjusting motor 312 and the clamping motor 380 are controlled by the vehicle body 10. Preferably, the adjusting motor 312, the clamping motor 380, and the casting motor 260 are all geared motors.

[0056] It is worth noting that when the clamping plate 342 seals both ends of the bridge expansion joint, the operator can fix the position of the clamping plate 342 by setting up a support frame or other fixing methods, so as to prevent the clamping plate 342 from moving during the concrete pouring process and affecting the pouring.

[0057] Example 3

[0058] This embodiment of a seamless casting system for prefabricated bridge construction is basically the same as that in Embodiment 2, except that: Figure 8 As shown, in this embodiment, in order to ensure the fixed position of the clamping plate 342 when it is sealing, a threaded rod is vertically fixed on the side wall of the clamping plate 342. The threaded rod passes through the vertical plate 322, that is, a through hole is opened on the vertical plate 322 for the threaded rod to pass through. There is a nut on each side of the vertical plate 322, and the nut is threadedly connected to the threaded rod. After the clamping plate 342 seals both ends of the bridge expansion joint, the position of the clamping plate 342 is fixed by adjusting the position of the two nuts on the threaded rod, that is, by fixing the threaded rod on the vertical plate 322.

[0059] It is worth noting that in this embodiment, before the clamping motor 380 drives the rotating plate 360 ​​to rotate, the positions of the two nuts on the threaded rod are adjusted to avoid the problem that the clamping plate 342 cannot move due to the obstruction of the nuts when it moves.

[0060] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A seamless butt casting system for assembled bridge construction, comprising a vehicle body (10), characterized in that: It also includes a casting mechanism (20) and a clamping mechanism (30), wherein the casting mechanism (20) is arranged on the vehicle body 10; the clamping mechanism (30) is arranged at the front end of the vehicle body (10), and the clamping mechanism (30) is used to clamp the two ends of the bridge expansion joint; The clamping mechanism (30) comprises a slide plate (320) arranged at the front end of the vehicle body (10), the slide plate (320) being located in the slide groove (310) and moving up and down along the slide groove (310); one end of the slide plate (320) extending out of the slide groove (310) is vertically connected to a connecting plate (321), and both ends of the connecting plate (321) are provided with a vertical plate (322) on one side away from the slide plate (320); two guide rods (330) are arranged between the vertical plates (322), and the two guide rods (330) are parallel to each other and located on the same horizontal plane. The guide rod (330) is provided with two movable plates (340), and the two movable plates (340) move relative to each other; a clamping plate (342) is connected to the bottom surface of the movable plate (340), and the clamping plate (342) is located between the two guide rods (330); a threaded rod is vertically fixed to the side wall of the clamping plate (342), and the threaded rod passes through the vertical plate (322), that is, a through hole for the threaded rod to pass through is opened on the vertical plate (322), and a nut is respectively provided on both sides of the vertical plate (322), and the nut is threadedly connected to the threaded rod; A sliding sleeve (341) is provided on the bottom surface of the movable plate (340), and the sliding sleeve (341) is sleeved on the guide rod (330); a rotating plate (360) is provided above the middle position of the two guide rods (330), and hinge rods (350) are hinged on both side walls of the rotating plate (360), and the hinge rods (350) are hinged to the movable plate (340); a clamping shaft (370) is connected to the rotating plate (360), and the clamping shaft (370) is driven by a clamping motor (380); A screw rod (311) movably connected to the inner wall of the slide groove (310) is provided in the slide groove (310); the screw rod (311) is arranged along the height direction of the vehicle body (10); the slide plate (320) is arranged on the screw rod (311); and the screw rod (311) is driven by an adjusting motor (312); The system further comprises a filling mechanism (40), the filling mechanism (40) being located in the bridge expansion joint, the filling mechanism (40) comprising a rubber plate (410) and an I-beam (420), the rubber plate (410) being arranged along the length direction of the bridge expansion joint, a plurality of I-beams (420) being provided, and the plurality of I-beams (420) being distributed on both sides of the rubber plate (410).

2. The seamless butt casting system for prefabricated bridge construction according to claim 1, characterized in that: The pouring mechanism (20) comprises a pouring hose (210), a feeding pipe (230) and a guide pipe (240), wherein the guide pipe (240) is arranged inside the vehicle body (10); one end of the guide pipe (240) is connected to the pouring hose (210), and the pouring hose (210) is located at the front end of the vehicle body (10); the feeding pipe (230) is perpendicular to the other end of the guide pipe (240), the feeding pipe (230) is connected to the guide pipe (240), and the top end of the feeding pipe (230) extends to the outside of the vehicle body (10).

3. The seamless butt casting system for prefabricated bridge construction according to claim 2 is characterized by: A casting shaft (250) is provided in the guide tube (240), the casting shaft (250) being coaxially arranged with the guide tube (240), and a spiral blade (270) is provided on the casting shaft (250), the spiral blade (270) being spirally arranged along the length direction of the guide tube (240).

4. The seamless butt casting system for assembled bridge construction according to claim 3 is characterized by: The pouring shaft (250) extends from one end of the pouring hose (210) to the outside of the guide tube (240), and a pouring motor (260) is provided on the extended end.

5. The seamless butt casting system for assembled bridge construction according to claim 4 is characterized by: The rubber plate (410) is of equal length and height to the bridge expansion joint; and the plurality of I-beams (420) located on the same side of the rubber plate (410) are arranged at equal intervals.

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