Bridge fabrication machine walking limiting device with buffering function

Abstract

The utility model relates to the technical field of bridge fabrication machines, in particular to a bridge fabrication machine running limiting device with a buffering function, which comprises a mounting seat, a supporting plate arranged at the upper end of the mounting seat, a first buffering plate arranged on the front side of the supporting plate, and a second buffering plate arranged on the rear side of the first buffering plate. A shock absorber is arranged between the first buffer plate and the second buffer plate, a damper is arranged on the rear side of the second buffer plate, movable plates are arranged on the two sides of the damper, movable blocks are arranged at the rear ends of the movable plates, a guide sliding rod is arranged on the surface of the supporting plate, and fixing pieces used for being connected with the supporting plate are fixedly installed at the two ends of the guide sliding rod. A first spring and a second spring are arranged on the outer side of the guide sliding rod; impact force borne by the first buffer plate is preliminarily buffered through the shock absorber, the second buffer plate drives the movable plate to deflect, the movable block slides on the surface of the guide sliding rod, and the elastic force of the first spring and the elastic force of the second spring are matched with the damper, so that secondary buffering of the impact force is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bridge building machine technology, and in particular to a bridge building machine travel limit device with buffer function. Background Technology

[0002] Bridge-building machines are specialized equipment used for the segmented construction of bridges. They enable the mechanized construction of the main structure of bridges through the assembly of prefabricated components or on-site casting. Their core function is to replace the traditional hanging basket process and improve the construction efficiency and precision of long-span bridges (such as railway bridges and highway bridges).

[0003] For example, patent number CN115341486B discloses a bridge-building machine for cantilever casting construction, including a main truss and an inner mold. The inner mold includes an inner mold body, an inner mold lifting beam, and an inner mold guide beam. The front end of the main truss is provided with a crossbeam that can provide support for the inner mold guide beam. The inner mold body is located on the inner mold lifting beam, and the inner mold lifting beam is provided with an inner mold lifting rod. The inner mold guide beam and the inner mold body can slide relative to each other. In this invention, before the overall hoisting of the reinforcing cage, the inner mold body is anchored to the already cast continuous beam segment by the inner mold lifting rod. The inner mold guide beam slides into the already cast continuous beam segment, and then the hoist lifts the reinforcing cage to the installation position. The inner mold will not affect the overall hoisting of the reinforcing cage. After the steel cage is in place, the front end of the inner formwork guide beam slides onto the crossbeam, which provides support. Then the inner formwork hanger is released, and the main body of the inner formwork slides forward along the inner formwork guide beam to the segment to be poured. There is no need to assemble the inner formwork on site, which helps to further shorten the construction period. The overall structure is simple, effective, and easy to operate.

[0004] However, the existing bridge-building machine travel limit devices have insufficient buffering capacity and low limit accuracy, resulting in high maintenance costs and certain safety hazards. Utility Model Content

[0005] In order to overcome the problems of insufficient buffering capacity, low limiting accuracy, and high maintenance cost of the bridge-building machine's travel limit device.

[0006] The technical solution of this utility model is as follows: a bridge-building machine travel limiting device with buffer function, including a mounting base, a support plate at the upper end of the mounting base, a first buffer plate at the front side of the support plate, a second buffer plate at the rear side of the first buffer plate, a shock absorber between the first buffer plate and the second buffer plate, a damper at the rear side of the second buffer plate, movable plates on both sides of the damper, a movable block at the rear end of the movable plate, a guide slide rod on the surface of the support plate, fixing parts for connecting the support plate fixedly installed at both ends of the guide slide rod, and a first spring and a second spring on the outer side of the guide slide rod.

[0007] Preferably, the first buffer plate and shock absorber are used to achieve initial buffering of the limiting impact, the second moving plate, rotating plate and movable block are used to disperse the impact force, and the damper, first spring and second spring are used to achieve secondary buffering of the impact force.

[0008] Preferably, the upper ends of the support plate and the mounting base are fixedly connected, and triangular plates are fixedly installed on the front and rear sides of the support plate, with the triangular plates fixedly connected to the upper ends of the mounting base.

[0009] Preferably, a guide rail is provided on the front side of the mounting base below the first buffer plate. The first and second buffer plates are arranged in parallel front to back. The front end of the shock absorber is fixedly connected to the first buffer plate, and the rear end of the shock absorber is fixedly connected to the second buffer plate.

[0010] Preferably, the front end of the damper is fixedly connected to the second buffer plate, the rear end of the damper is fixedly connected to the support plate, the movable plate is symmetrically arranged on the left and right, and the front end of the movable plate is rotatably connected to the second buffer plate.

[0011] Preferably, the front side of the movable block is rotatably connected to the movable plate, the movable block and the outer side of the guide slide rod are slidably connected, the guide slide rod is arranged in parallel vertically, and the guide slide rod is used to guide the sliding of the movable block.

[0012] Preferably, one end of the first spring is fixedly connected to the side of the movable block near the damper, the other end of the first spring is fixedly connected to the fixing member, and the first spring is sleeved on the outer side of the guide slide rod.

[0013] Preferably, one end of the second spring is fixedly connected to the side of the movable block away from the damper, the other end of the second spring is fixedly connected to the fixing member, and the second spring is sleeved on the outer side of the guide slide rod.

[0014] The beneficial effects of this utility model are:

[0015] 1. The travel limit device of the bridge building machine with buffer function contacts the traveling mechanism through the first buffer plate, and the shock absorber provides initial buffering of the impact force.

[0016] 2. The travel limit device of the bridge building machine with buffer function drives the movable plate to deflect through the second buffer plate. The movable block slides on the surface of the guide slide rod. The elastic force of the first spring and the second spring, together with the damper, realizes the secondary buffering of the impact force, and realizes the three-level protection of "pre-limiting-buffering-precise braking". Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional representation of the travel limiting device for a bridge-building machine with a buffer function according to this utility model. Figure 1 ;

[0018] Figure 2 The diagram shown is a three-dimensional representation of the travel limiting device for a bridge-building machine with a buffer function according to this utility model. Figure 2 ;

[0019] Figure 3 The diagram shown is a three-dimensional structural schematic of the first buffer plate, the second buffer plate, and the movable plate of this utility model.

[0020] Figure 4 The diagram shown is a three-dimensional structural schematic of the support plate and guide slide rod of this utility model.

[0021] Figure 5 The diagram shown is a three-dimensional structural schematic of the support plate and movable block of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Mounting base; 2. Support plate; 21. Triangular plate; 3. First buffer plate; 4. Second buffer plate; 5. Shock absorber; 6. Damper; 7. Movable plate; 8. Movable block; 9. Guide slide rod; 10. First spring; 11. Second spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment of a bridge-building machine travel limiting device with buffer function, including a mounting base 1, a support plate 2 at the upper end of the mounting base 1, a first buffer plate 3 at the front side of the support plate 2, a second buffer plate 4 at the rear side of the first buffer plate 3, a shock absorber 5 between the first buffer plate 3 and the second buffer plate 4, a damper 6 at the rear side of the second buffer plate 4, movable plates 7 on both sides of the damper 6, a movable block 8 at the rear end of the movable plate 7, and a guide slide rod 9 on the surface of the support plate 2. The rod 9 has fixed fasteners at both ends for connecting the support plate 2. The guide slide rod 9 has a first spring 10 and a second spring 11 on its outer side. It contacts the traveling mechanism through the first buffer plate 3. The shock absorber 5 provides initial buffering of the impact force. At the same time, the second buffer plate 4 is subjected to pressure, which causes the movable plate 7 to deflect. The movable block 8 slides on the surface of the guide slide rod 9. The first spring 10 is stretched and the second spring 11 is compressed. The elastic force of the first spring 10 and the second spring 11, together with the damper 6, achieves secondary buffering of the impact force.

[0025] Please see Figures 1-4In this embodiment, the upper ends of the support plate 2 and the mounting base 1 are fixedly connected. Triangular plates 21 are fixedly installed on the front and rear sides of the support plate 2. The triangular plates 21 are fixedly connected to the upper ends of the mounting base 1. A guide rail is provided on the front side of the mounting base 1 below the first buffer plate 3. The first buffer plate 3 and the second buffer plate 4 are arranged in parallel front and rear. The front end of the shock absorber 5 is fixedly connected to the first buffer plate 3, and the rear end of the shock absorber 5 is fixedly connected to the second buffer plate 4. The traveling guide system of the bridge-building machine travel mechanism eliminates lateral offset and reduces the buffer load by using a traveling wheel set with a 5-10mm gap fit with the limiting rail and a rotatable guide wheel in the middle. The connecting support system adapts to installation errors and reduces vibration transmission by using a fixed plate with an elongated hole and a rubber shock-absorbing pad. The mounting base 1 is installed and fixed at the end of the guide rail to limit the travel mechanism of the bridge-building machine. When the travel mechanism moves to the end of the guide rail, it contacts the travel mechanism through the first buffer plate 3, and the shock absorber 5 initially buffers the impact force.

[0026] Please see Figures 2-5In this embodiment, the front end of the damper 6 and the second buffer plate 4 are fixedly connected, the rear end of the damper 6 and the support plate 2 are fixedly connected, the movable plate 7 is arranged symmetrically from left to right, the front end of the movable plate 7 and the second buffer plate 4 are rotatably connected, the front side of the movable block 8 is rotatably connected to the movable plate 7, the movable block 8 and the outer side of the guide rod 9 are slidably sleeved, the guide rod 9 is arranged parallel up and down, and the guide rod 9 is used to guide the sliding of the movable block 8, one end of the first spring 10 is fixedly connected to the side of the movable block 8 near the damper 6, and the other end of the first spring 10 is fixedly connected to the fixing member. The outer side of the guide slide rod 9 is sleeved with a second spring 11. One end of the second spring 11 is fixedly connected to the side of the movable block 8 away from the damper 6, and the other end of the second spring 11 is fixedly connected to a fixing component. The second spring 11 and the outer side of the guide slide rod 9 are sleeved together. The second buffer plate 4 drives the movable plate 7 to deflect, and the movable block 8 slides on the surface of the guide slide rod 9. The first spring 10 is stretched, and the second spring 11 is compressed. The elastic force of the first spring 10 and the second spring 11, in conjunction with the damper 6, achieves secondary buffering of the impact force and limit buffering of the bridge-building machine's traveling mechanism, realizing "pre-limiting-buffering-precision". The bridge-building machine features a three-level braking protection system. The traveling mechanism frame utilizes a high-strength steel "gate" frame structure, fixed by connecting supports. An adjustable limit block with a rubber buffer pad is installed at the top, working in conjunction with limit rails on both sides of the track to restrict lateral deviation of the traveling wheels. Through a multi-stage composite buffer design, the first stage absorbs 50%–60% of the impact energy, the second stage dissipates the remaining kinetic energy, and under extreme conditions, metal plastic deformation energy-absorbing plates protect the main structure. The maximum buffer stroke is ≥200mm. During operation, the guide wheels first correct the trajectory and provide early warning, then the impact is absorbed through the elastic deformation and damping dissipation of the buffer assembly. Ultimately, the rigid contact control system cuts off the power to achieve braking, with a limit accuracy of ±2mm and a braking distance error of ≤5mm. Its innovation lies in multi-level composite buffering, dynamic guidance correction, and modular design. The buffering parameters can be customized according to the tonnage of the bridge-building machine (500t~5000t), adapting to environments from -20℃ to +60℃ and with an IP65 protection level. After design, manufacturing, installation, and commissioning, it is connected to the PLC control system, which can reduce the impact load by more than 70%, control the travel deviation to ≤5mm, improve safety and reliability, reduce maintenance costs, and has broad engineering application value.

[0027] In use, the mounting base 1 is installed and fixed at the end of the guide rail to limit the travel mechanism of the bridge-building machine. When the travel mechanism moves to the end of the guide rail, the first buffer plate 3 contacts the travel mechanism, and the shock absorber 5 initially buffers the impact force. At the same time, the second buffer plate 4 is under pressure, which causes the movable plate 7 to deflect. The movable block 8 slides on the surface of the guide slide rod 9, the first spring 10 is stretched, and the second spring 11 is compressed. The elastic force of the first spring 10 and the second spring 11, together with the damper 6, achieves secondary buffering of the impact force and realizes the limiting buffering of the travel mechanism of the bridge-building machine.

[0028] Through the above steps, the shock absorber 5 initially buffers the impact force by contacting the first buffer plate 3 with the traveling mechanism. At the same time, the second buffer plate 4 is subjected to pressure, which causes the movable plate 7 to deflect. The movable block 8 slides on the surface of the guide rod 9, the first spring 10 is stretched, and the second spring 11 is compressed. The elastic force of the first spring 10 and the second spring 11, together with the damper 6, achieves secondary buffering of the impact force, so as to solve the problems of insufficient buffering capacity, low limiting accuracy, and high maintenance cost of the bridge building machine traveling limit device.

Claims

1. A bridge-building machine travel limit device with buffer function, comprising a mounting base (1), characterized in that: A support plate (2) is provided at the upper end of the mounting base (1). A first buffer plate (3) is provided on the front side of the support plate (2). A second buffer plate (4) is provided on the rear side of the first buffer plate (3). A shock absorber (5) is provided between the first buffer plate (3) and the second buffer plate (4). A damper (6) is provided on the rear side of the second buffer plate (4). Movable plates (7) are provided on both sides of the damper (6). A movable block (8) is provided at the rear end of the movable plate (7). A guide slide rod (9) is provided on the surface of the support plate (2). Fixing parts for connecting the support plate (2) are fixedly installed at both ends of the guide slide rod (9). A first spring (10) and a second spring (11) are provided on the outer side of the guide slide rod (9).

2. The bridge-building machine travel limit device with buffer function according to claim 1, characterized in that: The upper ends of the support plate (2) and the mounting base (1) are fixedly connected. Triangular plates (21) are fixedly installed on the front and rear sides of the support plate (2). The upper ends of the triangular plates (21) and the mounting base (1) are fixedly connected.

3. The bridge-building machine travel limit device with buffer function according to claim 1, characterized in that: The front side of the mounting base (1) is provided with a guide rail below the first buffer plate (3). The first buffer plate (3) and the second buffer plate (4) are arranged in parallel front to back. The front end of the shock absorber (5) is fixedly connected to the first buffer plate (3), and the rear end of the shock absorber (5) is fixedly connected to the second buffer plate (4).

4. The bridge-building machine travel limit device with buffer function according to claim 1, characterized in that: The front end of the damper (6) is fixedly connected to the second buffer plate (4), the rear end of the damper (6) is fixedly connected to the support plate (2), the movable plate (7) is symmetrically arranged on the left and right, and the front end of the movable plate (7) is rotatably connected to the second buffer plate (4).

5. The bridge-building machine travel limiting device with buffer function according to claim 1, characterized in that: The front side of the movable block (8) is rotatably connected to the movable plate (7). The movable block (8) and the outer side of the guide slide rod (9) are slidably connected. The guide slide rod (9) is arranged in parallel vertically and is used to guide the sliding of the movable block (8).

6. The bridge-building machine travel limiting device with buffer function according to claim 1, characterized in that: One end of the first spring (10) is fixedly connected to the side of the movable block (8) near the damper (6), the other end of the first spring (10) is fixedly connected to the fixing member, and the first spring (10) is sleeved on the outside of the guide slide rod (9).

7. The bridge-building machine travel limit device with buffer function according to claim 1, characterized in that: One end of the second spring (11) is fixedly connected to the side of the movable block (8) away from the damper (6), the other end of the second spring (11) is fixedly connected to the fixing member, and the second spring (11) is sleeved on the outside of the guide slide rod (9).

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