A municipal bridge height limiting device and its assembly and construction process

Abstract

The present application relates to a municipal bridge height limit device and an assembly and construction process for the device, which belongs to the field of municipal bridge technology. The device includes a height limit frame and a lifting assembly. The height limit frame includes a base, a connecting column and a cross frame. The base is integrally cast with the bridge body. The connecting column is bolted to the base, and the cross frame is slidably connected to the connecting column. The lifting assembly includes a lifting drive source, which is arranged in a lifting cavity and is used to drive the cross frame to move up and down along the connecting column. The present application has an assembly connection between the connecting column and the base. If the connecting column is damaged, it is easy to replace. The lifting assembly realizes the adjustment of the overall height limit of the height limit frame, is easy to operate, and has the beneficial effect of improving the applicability of the height limit frame.

Description

Technical Field

[0001] The present application relates to the technical field of municipal bridges, and in particular to a municipal bridge height limiting device and an assembly and construction process for the device. Background Art

[0002] Height limiters used on municipal bridges are primarily designed to protect the bridge structure from damage caused by pressure. In actual use, the height limit varies depending on the bridge's capacity and traffic volume at different times of day.

[0003] The height limiting device in the related technology includes the entire height limiting portal and a signboard. The height limiting portal includes support columns and a crossbeam on both sides. The support columns on both sides are fixedly connected to the bridge body. The crossbeam is welded to the support columns on both sides. The signboard is set on the crossbeam to remind passing vehicles.

[0004] However, the height of the height-limiting frame in the related art is a fixed height, which is not convenient for adjusting the height of the beam according to the capacity of the bridge body and the traffic volume at different times, and is inconvenient to use. Summary of the Invention

[0005] In order to improve the problem of inconvenient adjustment of the height of the beam, the present application provides a municipal bridge height limiting device and an assembly construction process of the device.

[0006] The municipal bridge height limiting device provided in this application adopts the following technical solution:

[0007] A municipal bridge height limiting device, comprising:

[0008] A height limiting frame, comprising a connecting column and a cross frame, wherein the connecting column is provided on the bridge body and the cross frame is slidably connected to the connecting column;

[0009] A lifting component is provided with a lifting cavity in the connecting column. The lifting component includes a lifting drive source, which is provided in the lifting cavity and is used to drive the cross frame to move up and down along the connecting column.

[0010] By adopting the above technical solution, according to various situations such as the different vehicle accommodation conditions of the bridge bodies in different regions and areas, and the different control conditions of vehicle flow at different times of the day, the cross frame can be driven to move up and down relative to the connecting column through the lifting drive source according to the PLC preset program, so as to realize the adjustment of the overall height limit of the height limit frame, which is convenient to operate and improves the applicability of the height limit frame.

[0011] Preferably, the lifting assembly also includes a lifting gear row and a transmission shaft. The lifting gear row is arranged on the horizontal frame. The length direction of the lifting gear row is consistent with the height direction of the connecting column. A lifting slot is provided on the connecting column, and the lifting slot is used to place the lifting gear row. The lifting drive source is a lifting motor. The end of the output shaft of the lifting motor is provided with a driving gear. The transmission shaft is rotatably connected to the lifting cavity. A transmission gear and a lifting gear are provided on the transmission shaft. The transmission gear is engaged with the driving gear, and the lifting gear is engaged with the lifting gear row.

[0012] By adopting the above technical solution, according to the preset PLC program, the lifting motor is started, the lifting motor drives the driving gear to rotate, the driving gear drives the transmission gear to rotate, the transmission gear drives the transmission shaft to rotate, the transmission shaft drives the lifting gear to rotate, and the lifting gear then drives the lifting gear row to move, and the lifting gear row drives the cross frame to move toward the bridge body, thereby realizing the adjustment of the height limit of the height limit frame.

[0013] Preferably, a buffer assembly is provided on the cross frame, and the buffer assembly includes a plurality of buffer drums. A cross bar is provided on the side of the cross frame facing the bridge body, and the plurality of buffer drums are sleeved on the cross bar, and the plurality of buffer drums are arranged in sequence along the length direction of the cross bar.

[0014] Preferably, the buffer assembly also includes a buffer slide rod and a buffer spring. A buffer cavity is opened in the buffer cylinder. The buffer slide rod includes a first sleeve rod and a second slide rod. The first sleeve rod is arranged on the inner cavity wall of the buffer cavity. The second slide rod is slidingly connected to the first sleeve rod, and the end of the second slide rod away from the first sleeve rod is connected to the inner cavity wall of the buffer cavity. The buffer spring is arranged in the first sleeve rod, and one end of the buffer spring abuts against the end face of the second slide rod located in the first sleeve rod.

[0015] By adopting the above technical solution, if a vehicle enters the bridge body at an excessive height and collides with the height limit frame, the mutual cooperation of the buffer drum, buffer slide bar and buffer spring can reduce the damage to the vehicle and the height limit frame itself, thereby increasing the service life of the height limit frame.

[0016] Preferably, a warning component is also provided on the cross frame, and the warning component includes a warning screen and a distance detector. The warning screen is provided above the cross frame, and the warning screen is used to display the height limit of the current height limit frame. The distance detector is provided on the side of the cross frame facing the bridge body, and the distance detector is used to detect the distance between the current cross frame and the bridge body. The distance detector is electrically connected to the built-in control system of the warning screen.

[0017] By adopting the above technical solution, the distance detector detects the distance between the current cross frame and the bridge body, and synchronizes the signal to the warning screen, so that the height limit displayed on the warning screen is consistent with the data detected by the distance detector; when the height limit frame is at any height limit, the current height limit can be updated synchronously on the warning screen, which is convenient for timely reminders to passing vehicles and reduces the possibility of non-compliant vehicles entering the bridge.

[0018] Preferably, the height limiting frame also includes a base seat, which is cast integrally with the bridge body, a first connecting ring is integrally formed on the base seat, a second connecting ring is provided on the connecting column, and the first connecting ring and the second connecting ring are connected by high-strength bolts.

[0019] By adopting the above technical solution, the foundation seat and the bridge body are cast as one piece, and then the connecting column and the foundation seat are connected by high-strength bolts. If the connecting column is damaged, it is easy to repair and replace.

[0020] Preferably, it also includes a width limiting component, which includes a pushing cylinder, a width limiting movable plate and a hinged connecting rod. A pushing cavity is opened on the connecting column, and the pushing cylinder is arranged on the cavity wall of the pushing cavity. The width limiting movable plate is connected to the piston rod of the pushing cylinder. One end of the hinged connecting rod is hinged to the cavity wall of the pushing cavity, and the other end is hinged to the width limiting movable plate.

[0021] By adopting the above technical solution, in order to further improve the restriction on vehicles entering the main body of the bridge, the pushing cylinder is started, the pushing cylinder drives the pushing block to move, the articulated connecting rod extends, and synchronously drives the width limiting movable plate to extend. The width limiting movable plates on the left and right sides are extended synchronously, and a channel for vehicles to pass through is formed between the two.

[0022] Preferably, it also includes an embedded component, which includes an embedded box, a stabilizing splint and an embedded motor. The embedded box is arranged inside the bridge body, the embedded box is connected to the foundation seat, the embedded box is provided with an embedded hole, the stabilizing splint is located in the embedded hole and is slidably connected to the embedded box, the sliding direction of the stabilizing splint is consistent with the sliding direction of the cross frame, the embedded motor is arranged in the embedded box, the output shaft of the embedded motor is provided with an embedded gear, the stabilizing splint is provided with an embedded gear row, and the embedded gear is meshed with the embedded gear row.

[0023] By adopting the above technical solution, after the width limiting movable plate extends out of the pushing cavity, the embedded motor starts, driving the embedded gear to rotate, and then driving the embedded gear row to move. The embedded gear row drives the stabilizing splint to extend out of the embedded box, that is, extend out of the bridge body, and clamp the end of the width limiting movable plate close to the bridge body, thereby improving the position stability of the width limiting movable plate after it is extended.

[0024] Preferably, an auxiliary component is also included, which includes a sealing plate, a connecting rope, a accommodating plate and a accommodating vertical plate. The sealing plate is located in the embedded box and is used to seal the embedded hole. The accommodating vertical plate is arranged on a side box wall close to the ground in the auxiliary box. The plate surface of the accommodating plate is parallel to the ground and is fixedly connected to the accommodating vertical plate. A accommodating space is formed between the accommodating plate, the accommodating vertical plate and the auxiliary box, and the accommodating space is used to accommodate the sealing plate. One end of the connecting rope is fixedly connected to the sealing plate, and the other end is passed through the accommodating vertical plate and passes through the base seat. A hanging ring is provided at the end of the connecting rope passing through the base seat, and the piston rod of the pushing cylinder is connected to a pushing block. A hanging buckle is provided on the pushing block. After the pushing block is extended and moved, the hanging buckle is clamped with the hanging ring.

[0025] By adopting the above technical solution, during normal use, the sealing plate blocks the embedded hole and does not interfere with the passing vehicles; when the width is limited, the cylinder drives the pushing block to extend, the hanging buckle is hooked with the hanging ring, and the pushing block continues to move to drive the hanging ring to move, pulling the connecting rope, and then pulling the sealing plate, so that the embedded hole is opened, and the sealing plate enters the accommodating space, making way for the stable splint to extend out of the embedded box.

[0026] This application also provides an assembly construction process for a municipal bridge height limiting device using the following technical solution:

[0027] A municipal bridge height limiting device assembly construction process includes the following steps:

[0028] Embedded component placement: embed the embedded components into the main body of the bridge;

[0029] Casting: After laying the steel mesh inside the bridge body and the foundation seat, cast the bridge body and foundation seat as a whole;

[0030] Horizontal frame assembly: Place the lifting gear row on the horizontal frame in the lifting slide groove on the connecting column to realize the assembly of the horizontal frame and the connecting column;

[0031] Connecting column assembly: Assemble and connect the connecting column and the base;

[0032] Auxiliary component assembly: Assemble the sealing plate, connecting rope and hanging ring with the width limiting component.

[0033] By adopting the above technical solution, the foundation seat and embedded components are embedded in the main body of the bridge in advance, which is conducive to improving the stability of the foundation seat. The connecting column and the foundation seat are assembled and connected by high-strength bolts, which can not only ensure the connection strength but also facilitate maintenance and replacement.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. According to the different vehicle accommodating conditions of the bridge bodies in different regions and areas, and the different vehicle flow control conditions at different times of the day, the PLC preset program can be used to start the lifting motor, drive the driving gear to rotate, drive the transmission gear to rotate, drive the transmission gear to rotate, drive the lifting gear to rotate, and the lifting gear drives the lifting gear to move. The lifting gear then drives the lifting gear row to move, and the lifting gear row drives the cross frame to move toward the bridge body, thereby realizing the height limit adjustment of the height limit frame. The operation is convenient and the applicability of the height limit frame is improved.

[0036] 2. In order to further improve the restriction on vehicles entering the main body of the bridge, the pushing cylinder is started, and the pushing cylinder drives the pushing block to move, the articulated connecting rod is extended, and the width limiting movable plate is synchronously driven to extend. The width limiting movable plates on the left and right sides are synchronously extended, and a channel for vehicles to pass through is formed between the two. After the width limiting movable plate extends out of the pushing cavity, the embedded motor is started to drive the embedded gear to rotate, and then drive the embedded gear row to move. The embedded gear row drives the stabilizing splint to extend out of the embedded box, that is, extend out of the bridge body, and clamp the end of the width limiting movable plate close to the bridge body, thereby improving the position stability of the width limiting movable plate after extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the municipal bridge height limiting device in the embodiment of the present application.

[0038] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle.

[0039] Figure 3 yes Figure 1 A partial enlarged view of part B in the middle.

[0040] Figure 4 It is a structural diagram used to reflect the warning component in the embodiment of the present application.

[0041] Figure 5 It is a structural diagram used to reflect the lifting component and the width-limiting component in the embodiment of the present application.

[0042] Figure 6 yes Figure 5 A partial enlarged view of part C in the middle.

[0043] Figure 7 yes Figure 6 A partial enlarged view of part D in the middle.

[0044] Figure 8 It is a structural diagram used to reflect the positional relationship between the width-limiting components, embedded components and auxiliary components in the embodiment of the present application.

[0045] Figure 9It is a schematic diagram used to illustrate the state when the width-limiting movable plate and the stabilizing splint are extended in an embodiment of the present application.

[0046] Figure 10 It is a structural diagram used to illustrate the extension of the width-limiting movable plate in an embodiment of the present application.

[0047] Explanation of reference numerals: 1. Bridge body; 2. Height limit frame; 21. Base; 211. First connecting ring; 22. Connecting column; 221. Second connecting ring; 222. Lifting slide; 223. Lifting cavity; 224. Pushing cavity; 23. Cross frame; 231. Cross bar; 24. High-strength bolt; 3. Buffer assembly; 31. Buffer drum; 311. Buffer cavity; 32. Buffer slide bar; 321. First set of rods; 322. Second slide bar; 33. Buffer spring; 4. Warning assembly; 41. Warning screen; 42. Distance detector; 43. Height detection probe; 5. Lifting assembly; 51. Lifting gear row; 52. Transmission shaft; 521, transmission gear; 522, lifting gear; 53, lifting motor; 531, driving gear; 6, width limiting component; 61, width limiting movable plate; 62, hinged connecting rod; 63, pushing cylinder; 631, pushing block; 6311, hanging buckle; 64, reinforcing connecting rod; 7, embedded component; 71, embedded box; 711, embedded hole; 72, stabilizing splint; 721, embedded gear row; 73, embedded motor; 731, embedded gear; 8, auxiliary component; 81, sealing plate; 82, connecting rope; 821, hanging ring; 83, reversing wheel; 84, receiving plate; 85, receiving vertical plate; 86, reset spring. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1-10 This application is described in further detail.

[0049] The embodiment of the present application discloses a municipal bridge height limiting device, such as Figure 1 As shown, the height limit frame 2 includes a base 21, connecting columns 22, and a cross frame 23. The base 21 is fixedly connected to the bridge body 1 by casting, the connecting columns 22 are detachably connected to the base 21, and the cross frame 23 is slidably connected to the connecting columns 22 in the vertical direction. According to the vehicle capacity of the bridge body 1 and the control of vehicle flow at different time periods, the height of the cross frame 23 relative to the ground is adjusted, thereby achieving the height limit of the height limit frame 2 for easy use.

[0050] like Figure 1 and 2 As shown, a first connecting ring 211 is integrally formed on the base 21 , and a second connecting ring 221 is fixedly connected to the connecting column 22 . The first connecting ring 211 and the second connecting ring 221 are connected by high-strength bolts 24 .

[0051] like Figure 1 and 3 As shown, a buffer assembly 3 is mounted on the crossbar 23. The buffer assembly 3 includes a buffer cylinder 31, a buffer slide 32, and a buffer spring 33. The crossbar 23 includes a crossbar 231. Multiple buffer cylinders 31 are provided, and the multiple buffer cylinders 31 are sequentially mounted on the crossbar 231. A buffer cavity 311 is defined within the buffer cylinder 31. The buffer slide 32 includes a first sleeve rod 321 and a second slide rod 322. The first sleeve rod 321 is fixedly connected to the inner wall of the buffer cavity 311. The second slide rod 322 is slidably connected to the first sleeve rod 321, and the end of the second slide rod 322, which is away from the first sleeve rod 321, is fixedly connected to the inner wall of the buffer cavity 311. The buffer spring 33 is mounted within the first sleeve rod 321, with one end fixedly connected to the end surface of the first sleeve rod 321 and the other end fixedly connected to the end surface of the second slide rod 322. Both the buffer cylinder 31 and the buffer slide rod 32 are made of an elastic, wear-resistant material, such as rubber.

[0052] like Figure 1 and 4 As shown, a warning assembly 4 is also provided on the cross frame 23. The warning assembly 4 includes a warning screen 41, a distance detector 42, and a height detection probe 43. The warning screen 41 is fixedly connected to the top of the cross frame 23 and is used to display the current height limit of the height limit frame 2. The distance detector 42 is fixedly connected to the side of the cross frame 23 facing the bridge body 1 and is used to detect the current distance between the cross frame 23 and the bridge body 1. The distance detector 42 is electrically connected to the built-in control system of the warning screen 41. The distance detector 42 detects the current distance between the cross frame 23 and the bridge body 1 and synchronizes the signal to the warning screen 41, so that the height limit displayed on the warning screen 41 is consistent with the data detected by the distance detector 42. When the height limit frame 2 is at any height limit, the current height limit can be synchronously updated on the warning screen 41, facilitating timely reminders to passing vehicles and reducing the possibility of non-compliant vehicles entering the bridge. A height detection probe 43 is fixedly attached to the side of the cross frame 23 facing away from the bridge body 1. The height detection probe 43 is electrically connected to the control system built into the warning screen 41 and is used to detect the height of a vehicle about to enter the bridge body 1. According to a pre-set PLC program, the height detection probe 43 detects the height of a vehicle about to enter the bridge body 1. If the detected vehicle height exceeds the current height limit of the height limit frame 2, a signal is transmitted to the control system built into the warning screen 41. The control system within the warning screen 41 receives the signal and causes the warning screen 41 to illuminate and flash, further alerting drivers of over-height vehicles to promptly detect them and reduce the possibility of a collision.

[0053] like Figure 5 and 6As shown, the height-limiting device also includes a lifting assembly 5, which includes a lifting gear row 51, a transmission shaft 52, and a lifting drive source. A lifting chute 222 is provided on the connecting column 22 along the height direction. The lifting gear row 51 is fixedly connected to the cross frame 23. The length direction of the lifting gear row 51 is consistent with the length direction of the connecting column 22. Two lifting gear rows 51 are provided on each side of the cross frame 23. The number of lifting chute 222 is the same as that of the lifting gear row 51, and they correspond one to one. The lifting chute 222 is used for the lifting gear row 51 to be placed and slide. The lifting drive source is a lifting motor 53. A lifting cavity 223 is provided in the connecting column 22. The lifting motor 53 is fixedly connected to the inner wall of the lifting cavity 223. The output shaft end of the lifting motor 53 is fixedly connected to the drive gear 531. The transmission shaft 52 is rotatably connected to the lifting cavity 223 . A transmission gear 521 and a lifting gear 522 are fixedly connected to the transmission shaft 52 . The transmission gear 521 is engaged with the driving gear 531 ; the lifting gear 522 is engaged with the lifting gear row 51 .

[0054] In real-life use, the height limit may need to be adjusted due to various circumstances, such as the varying vehicle capacity of the bridge body 1 in different regions and areas, and the varying vehicle flow control requirements at different times of the day. For example, on certain road sections, the nighttime height limit may be lower than the daytime height limit. According to a preset PLC program, the lifting motor 53 is activated, which drives the drive gear 531 to rotate. The drive gear 531 drives the transmission gear 521 to rotate. The transmission gear 521 drives the transmission shaft 52 to rotate. The transmission shaft 52 drives the lifting gear 522 to rotate. The lifting gear 522 then drives the lifting gear 51 to move. The lifting gear 51 drives the cross frame 23 to move toward the bridge body 1, thereby adjusting the height limit of the height limit frame 2.

[0055] like Figure 5 and 7 As shown, the height limiting device also includes a width limiting assembly 6, which is provided with two groups, one group being provided in each connecting column 22. The width limiting assembly 6 includes a width limiting movable plate 61, a hinged connecting rod 62, a push block 631, and a push cylinder 63. A push cavity 224 is defined at one end of the connecting column 22, which is adjacent to the base 21. The push cavity 224 is located below the lifting cavity 223. One end of the hinged connecting rod 62 is hinged to the width limiting movable plate 61, and the other end is hinged to the inner wall of the push cavity 224. The push cylinder 63 is fixedly connected to the wall of the push cavity 224 on the side away from the lifting cavity 223, and the push block 631 is fixedly connected to the piston rod of the push cylinder 63. The end of the pushing block 631 away from the pushing cylinder 63 is fixedly connected to the width-limiting movable plate 61. In order to further improve the connection strength between the width-limiting movable plate 61 and the connecting column 22, a reinforcing link 64 is also fixedly connected to the width-limiting movable plate 61. The reinforcing link 64 is a telescopic rod. The end of the reinforcing link 64 away from the width-limiting movable plate 61 is fixedly connected to the cavity wall of the pushing cavity 224.

[0056] During normal use, the width-limiting movable plate 61 is housed in the push chamber 224; if further restrictions are needed on vehicles entering the bridge body 1, width and height restrictions can be used to assist. According to the preset PLC program, the push cylinder 63 is activated, driving the push block 631 to move, and the articulated connecting rod 62 extends, synchronously driving the width-limiting movable plate 61 to extend. The width-limiting movable plates 61 on the left and right sides extend synchronously, forming a passage for vehicles to pass between the two width-limiting movable plates 61. To enhance the warning effect on passing vehicles, reflective strips are affixed to the width-limiting movable plates 61.

[0057] like Figure 8 、 9 As shown in Figure 10, the height limiting device also includes an embedded component 7, which includes an embedded box 71, a stabilizing splint 72, and an embedded motor 73. Before the bridge body is cast, the embedded box 71 is embedded under the bridge body. The embedded box 71 is fixed inside the bridge body. The embedded box 71 is provided with an embedded hole 711. The stabilizing splint 72 is located in the embedded hole 711 and is slidably connected to the embedded box 71. The embedded motor 73 is fixedly connected to the embedded box 71. The output shaft of the embedded motor 73 is fixedly connected to an embedded gear 731. One side plate surface of the stabilizing splint 72 is fixedly connected to an embedded gear row 721. The embedded gear 731 is meshed with the embedded gear row 721.

[0058] During normal use, the stabilizing plate 72 is located within the embedded box 71, that is, within the bridge itself, without interfering with passing vehicles. When vehicle width control is required, the cylinder 63 is pushed to extend the width-limiting movable plate 61. The embedded motor 73 is then activated, driving the embedded gear 731 to rotate, which in turn drives the embedded gear row 721 to move. The embedded gear row 721 drives the stabilizing plate 72 out of the embedded box 71, that is, out of the bridge itself, and clamps the end of the width-limiting movable plate 61 closest to the bridge, improving the positional stability of the extended width-limiting movable plate 61.

[0059] like Figure 8 and 10As shown, the height limiting device also includes an auxiliary assembly 8, which includes a sealing plate 81, a connecting rope 82, a reversing wheel 83, a receiving plate 84, and a receiving vertical plate 85. The receiving vertical plate 85 is fixedly connected to the side wall of the auxiliary box closest to the ground. The receiving plate 84 has a plate surface parallel to the ground and is fixedly connected to the receiving vertical plate 85. A receiving space is formed between the receiving plate 84, the receiving vertical plate 85, and the auxiliary box, and is used to accommodate the sealing plate 81. The sealing plate 81 is located within the embedded box 71 to seal the embedded hole 711. A return spring 86 is fixedly connected to one side of the sealing plate 81. The end of the return spring 86 facing away from the sealing plate 81 is fixedly connected to the side of the embedded box 71 facing away from the receiving space. The connecting rope 82 is fixedly connected to the side of the sealing plate 81 facing away from the return spring 86 and passes through the receiving vertical plate 85. The reversing wheel 83 is rotatably connected to the connection between the embedded box 71 and the base 21, and the connecting rope 82 abuts against the wheel surface of the reversing wheel 83. The end of the connecting rope 82, away from the sealing plate 81, is fixedly connected to a hooking ring 821. This hooking ring 821 passes through the base 21 and the connecting post 22 and is located within the push cavity. A hooking buckle 6311 is fixedly connected to the push block 631. This hooking buckle 6311 engages with the hooking ring 821, connecting the connecting rope 82 to the push block 631. A pressure sensor is installed on the wall of the box that houses the vertical plate 85 and is electrically connected to the embedded motor 73.

[0060] During conventional use, the stabilizing splint 72 is located in the embedded box 71, and the sealing plate 81 is located on the stabilizing splint 72 and blocks the embedded hole 711. If the impact of the embedded hole 711 on passing vehicles is further reduced, a rubber block can be used to block it until it is flush with the ground. When it is necessary to adjust the width of the road on the bridge body, the cylinder 63 is pushed to drive the pushing block 631 to extend. During the extension process of the pushing block 631, the hanging buckle 6311 is clamped on the hanging ring 821; the pushing block 631 continues to move, driving the width-limiting movable plate 61 to extend while driving the hanging ring 821 to move, thereby driving the connecting rope 82 to move, and the connecting rope 82 drives the sealing plate 81 to move, so that the embedded hole 711 is opened. The pushing block 631 continues to move, driving the width-limiting movable plate 61 and the sealing plate 81 to continue to move until the sealing plate 81 enters the accommodation space and abuts against the accommodation vertical plate 85. After the pressure sensor provided on the accommodating vertical plate 85 detects the abutting pressure of the sealing plate 81, it sends a signal to the embedded motor 73. After receiving the signal, the embedded motor 73 starts, driving the stabilizing splint 72 to extend out of the embedded box 71. After the stabilizing splint 72 extends out of the embedded box 71, it clamps the lower end of the width-limiting movable plate 61, thereby improving the position stability of the width-limiting movable plate 61.

[0061] The implementation principle of a municipal bridge height limiting device in the embodiment of the present application is as follows:

[0062] When the height limit needs to be adjusted, the lifting motor 53 is started, and the lifting motor 53 drives the driving gear 531 to rotate, and the driving gear 531 drives the transmission gear 521 to rotate, and the transmission gear 521 drives the transmission shaft 52 to rotate, and the transmission shaft 52 drives the lifting gear 522 to rotate, and the lifting gear 522 then drives the lifting gear row 51 to move, and the lifting gear row 51 drives the cross frame 23 to move toward the bridge body 1, thereby adjusting the height limit of the height limit frame 2. At the same time, the distance detector 42 detects the current distance between the cross frame 23 and the bridge body 1, and synchronizes the signal to the warning screen 41, so that the height limit displayed on the warning screen 41 is consistent with the data detected by the distance detector 42. When the height limit frame 2 is at any height limit, the current height limit can be synchronously updated on the warning screen 41, so as to provide timely reminders to passing vehicles and reduce the possibility of non-compliant vehicles entering the bridge.

[0063] When the width limit needs to be adjusted, the cylinder 63 is pushed to drive the push block 631 to extend. The push block 631 simultaneously drives the width limit movable plate 61 to extend, and at the same time, drives the hanging ring 821 to move, which in turn drives the connecting rope 82 to move, and the connecting rope 82 drives the sealing plate 81 to move, thereby opening the embedded hole 711. After the pressure detector detects pressure, the embedded motor 73 is activated to drive the stabilizing clamping plate 72 to extend and clamp the width limit movable plate 61, improving the position stability of the width limit movable plate 61 and thus the applicability of the height limit device.

[0064] The present application also discloses an assembly and construction process for a municipal bridge height limiting device, comprising the following steps:

[0065] Embedded parts placement: embed the embedded component 7 into the bridge body 1. Before placement, assemble the embedded motor 73, embedded gear 731, embedded gear row 721, etc. in advance;

[0066] Casting: Before construction, a steel mesh is laid to strengthen the strength of the bridge body 1 and the foundation seat 21. After the steel mesh in the bridge body 1 and the steel mesh in the foundation seat 21 are laid and placed in place, the steel meshes are supported by each other. Then, the bridge body 1 and the foundation seat 21 are cast as a whole to form them.

[0067] Assemble the cross frame 23: Assemble the lifting motor 53, the driving gear 531, and the transmission gear 521 in the connecting column 22. Then, place the lifting gear row 51 on the cross frame 23 in the lifting slot 222 on the connecting column 22, and assemble the lifting gear row 51 and the lifting gear 522 to complete the assembly of the cross frame 23 and the connecting column 22.

[0068] Assembling the connecting column 22: hoist the connecting column 22 and the cross frame 23 as a whole, and assemble and connect the connecting column 22 and the base 21 with high-strength bolts 24;

[0069] Assembling the auxiliary component 8: first adjust the position of the sealing plate 81, the connecting rope 82 and the hanging ring 821 with the pushing block 631, and then complete the assembly.

[0070] The implementation principle of the assembly construction process of a municipal bridge height limiting device in the embodiment of the present application is as follows:

[0071] By integrally casting the base 21 with the bridge body 1, the relative stability between the height-limiting frame 2 and the bridge body 1 is improved. The assembly of the cross frame 23 with the connecting column 22, and the assembly of the connecting column 22 with the base 21, facilitates the adjustment of the height and width limits, and facilitates replacement and repair in the event of damage. The embedded position of the stabilizing clamping plate 72 in the embedded box 71 corresponds to the position of the width-limiting movable plate 61 after it is extended. When adjusting the width limit, the stabilizing clamping plate 72 further clamps the width-limiting movable plate 61, which helps to improve the stability of the width-limiting movable plate 61.

[0072] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A municipal bridge height limiting device, characterized in that: include: A height limiting frame (2), the height limiting frame (2) comprising a connecting column (22) and a cross frame (23), the connecting column (22) being provided on the bridge body (1), and the cross frame (23) being slidably connected to the connecting column (22); a lifting assembly (5), a lifting cavity (223) being provided in the connecting column (22), the lifting assembly (5) comprising a lifting drive source, the lifting drive source being provided in the lifting cavity (223), and the lifting drive source being used to drive the cross frame (23) to move up and down along the connecting column (22); The height limiting frame (2) further comprises a base (21), the base (21) and the bridge body (1) are integrally cast, a first connecting ring (211) is integrally formed on the base (21), a second connecting ring (221) is provided on the connecting column (22), and the first connecting ring (211) and the second connecting ring (221) are connected by high-strength bolts (24); The invention also includes a width limiting component (6), the width limiting component (6) including a pushing cylinder (63), a width limiting movable plate (61) and a hinged connecting rod (62), a pushing cavity (224) is provided on the connecting column (22), the pushing cylinder (63) is arranged on the cavity wall of the pushing cavity (224), the width limiting movable plate (61) is connected to the piston rod of the pushing cylinder (63), one end of the hinged connecting rod (62) is hinged to the cavity wall of the pushing cavity (224), and the other end is hinged to the width limiting movable plate (61); The invention also includes an embedded component (7), the embedded component (7) including an embedded box (71), a stabilizing splint (72) and an embedded motor (73), the embedded box (71) is arranged inside the bridge body (1), the embedded box (71) is connected to the base seat (21), the embedded box (71) is provided with an embedded hole (711), the stabilizing splint (72) is located in the embedded hole (711) and is slidably connected to the embedded box (71), the sliding direction of the stabilizing splint (72) is consistent with the sliding direction of the cross frame (23), the embedded motor (73) is arranged in the embedded box (71), the output shaft of the embedded motor (73) is provided with an embedded gear (731), the stabilizing splint (72) is provided with an embedded gear row (721), and the embedded gear (731) is meshed with the embedded gear row (721); The auxiliary assembly (8) further comprises an auxiliary assembly (8), the auxiliary assembly (8) comprising a sealing plate (81), a connecting rope (82), a receiving plate (84) and a receiving vertical plate (85), the sealing plate (81) being located in the embedded box (71) for blocking the embedded hole (711), the receiving vertical plate (85) being located on a side wall of the auxiliary box close to the ground, the plate surface of the receiving plate (84) being parallel to the ground and being fixedly connected to the receiving vertical plate (85), a receiving space being formed between the receiving plate (84), the receiving vertical plate (85) and the auxiliary box, the receiving space being The space is used to accommodate the sealing plate (81), one end of the connecting rope (82) is fixedly connected to the sealing plate (81), and the other end is passed through the accommodating vertical plate (85) and passes through the base seat (21). The end of the connecting rope (82) passing through the base seat (21) is provided with a hanging ring (821), the piston rod of the pushing cylinder (63) is connected to the pushing block (631), and the pushing block (631) is provided with a hanging buckle (6311). After the pushing block (631) is extended and moved, the hanging buckle (6311) is clamped with the hanging ring (821).

2. A municipal bridge height limiting device according to claim 1, characterized in that: The lifting assembly (5) further comprises a lifting gear row (51) and a transmission shaft (52), wherein the lifting gear row (51) is arranged on the horizontal frame (23), the length direction of the lifting gear row (51) is consistent with the height direction of the connecting column (22), the connecting column (22) is provided with a lifting chute (222), and the lifting chute (222) is provided for the lifting gear row (51) to be placed, the lifting drive source is a lifting motor (53), the end of the output shaft of the lifting motor (53) is provided with a driving gear (531), the transmission shaft (52) is rotatably connected to the lifting cavity (223), the transmission shaft (52) is provided with a transmission gear (521) and a lifting gear (522), the transmission gear (521) is meshed with the driving gear (531), and the lifting gear (522) is meshed with the lifting gear row (51).

3. A municipal bridge height limiting device according to claim 1, characterized in that: A buffer assembly (3) is provided on the cross frame (23), and the buffer assembly (3) includes a plurality of buffer rotating cylinders (31). A cross bar (231) is provided on the side of the cross frame (23) facing the bridge body (1). The plurality of buffer rotating cylinders (31) are sleeved on the cross bar (231), and the plurality of buffer rotating cylinders (31) are arranged in sequence along the length direction of the cross bar (231).

4. A municipal bridge height limiting device according to claim 3, characterized in that: The buffer assembly (3) further includes a buffer slide rod (32) and a buffer spring (33). A buffer cavity (311) is provided in the buffer cylinder (31). The buffer slide rod (32) includes a first sleeve rod (321) and a second slide rod (322). The first sleeve rod (321) is provided on the inner cavity wall of the buffer cavity (311). The second slide rod (322) is slidably connected to the first sleeve rod (321), and one end of the second slide rod (322) away from the first sleeve rod (321) is connected to the inner cavity wall of the buffer cavity (311). The buffer spring (33) is provided in the first sleeve rod (321), and one end of the buffer spring (33) abuts against the end face of the second slide rod (322) located in the first sleeve rod (321).

5. The municipal bridge height limiting device according to claim 1, characterized in that: The horizontal frame (23) is further provided with a warning component (4), the warning component (4) comprising a warning screen (41) and a distance detector (42), the warning screen (41) being provided above the horizontal frame (23), the warning screen (41) being used to display the current height limit of the height limit frame (2), the distance detector (42) being provided on the side of the horizontal frame (23) facing the bridge body (1), the distance detector (42) being used to detect the distance between the current horizontal frame (23) and the bridge body (1), and the distance detector (42) being electrically connected to a built-in control system of the warning screen (41).

6. A municipal bridge height limit device assembly construction process, characterized by: The method comprises the following steps: Pre-embedded component placement: embedding the pre-embedded component (7) described in claim 1 into the bridge body (1); Casting: after laying the steel mesh in the bridge body (1) and the steel mesh in the foundation seat (21) in place, the bridge body (1) and the foundation seat (21) are cast as a whole; Cross frame assembly: assembling the cross frame (23) and the connecting column (22); Connecting column assembly: assembling and connecting the connecting column (22) and the foundation seat (21); Auxiliary component assembly: assembling the sealing plate (81), the connecting rope (82) and the hanging ring (821) with the width limiting component (6).

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