Vehicle limiting device for bridge passing

Abstract

The utility model discloses a vehicle limiting device for bridge passing, which relates to the technical field of vehicle limiting devices and comprises a plurality of height limiting frames, first motors are fixedly connected to the inner top ends of the height limiting frames, and threaded rods are rotatably connected to the inner top ends of the plurality of height limiting frames. The top of the outer wall of the height limiting frame is provided with a plurality of limiting sliding grooves at the same time, the limiting sliding grooves are located in the two sides of the outer portion of the threaded rod, and the threaded rod is rotationally connected with the center of the interior of the height limiting frame through a first motor. The special engineering vehicle can smoothly pass through the upper portion of the bridge in a special period, so that it is ensured that the device can respond quickly in an emergency, and the device can respond quickly no matter the device needs to be temporarily put down in the bridge construction period to allow the special engineering vehicle to pass through or effectively intercept an ultra-high transport vehicle at ordinary times.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle limiting devices, in particular to a vehicle limiting device for bridge passage. Background Art

[0002] A vehicle limiting device for bridge passage is a facility used to control and limit the passage of vehicles on a bridge. It usually includes a height limit bar, a weight limit device, etc. It detects and limits the height or weight of passing vehicles through physical or electronic means to prevent over-limit vehicles from damaging the bridge structure or causing safety accidents. This device plays an important role in modern traffic management, helping to protect the safety of bridges, extend their service life, and improve road traffic efficiency.

[0003] According to the search, the Chinese patent document, publication number: CN 221566928 U, discloses a height limit device for road vehicles. To solve the technical problems of poor buffering effect, complex structure, and difficult maintenance of existing road height limit bars, the utility model provides a height limit device for road vehicles, including a bracket, a height limit plate, and a buffering device. The upper end of the bracket is rotatably connected to a rotating shaft. The height limit plate is distributed parallel to the horizontal plane and fixedly connected below the rotating shaft. The buffering device consists of a buffering box and a buffering plate located inside the buffering box. The buffering box is fixedly connected to the bracket. The buffering box is filled with buffering liquid. The buffering plate is fixedly connected to the rotating shaft. The buffering plate is rotatably connected inside the buffering box along the axis direction of the rotating shaft, and a plurality of micropores distributed through the thickness direction of the buffering plate are arranged on the buffering plate. The buffering function of the vehicle is realized by the resistance generated by the buffering liquid on the buffering plate.

[0004] In practical applications, although the bridge height limit device can effectively intercept over-height transport vehicles, during the bridge construction period, when special engineering vehicles need to pass above the bridge for operations, the above height limit device lacks a flexible retracting mechanism for its height limit bar. When a special engineering vehicle needs to pass, it may not be able to pass due to its own vehicle height. This situation will not only delay the construction progress but also may cause safety accidents due to traffic congestion. In view of this, we provide a vehicle limiting device for bridge passage. Summary of the Utility Model

[0005] The purpose of the utility model is to make up for the deficiencies of the existing technology and provide a vehicle limiting device for bridge passage.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A vehicle restriction device for bridge passage, including a height limit frame. There are multiple height limit frames, and a first motor is fixedly connected to the inner top of each height limit frame. A threaded rod is rotatably connected to the inner top of each of the multiple height limit frames. At the same time, a plurality of limit sliding grooves are opened at the top of the outer wall of the height limit frame. The limit sliding grooves are located on both sides of the threaded rod, and the threaded rod is rotatably connected to the center of the inner part of the height limit frame through the first motor. The inner tops of the multiple height limit frames are respectively slidably connected with a limit support and a movable support through the first motor, the threaded rod and the limit sliding groove. A height limit rod is rotatably connected to one side of the outer part of the movable support.

[0007] As described above, the outer wall of the top end of the threaded rod is connected through the inner wall top of the height limit frame, and the outer wall of the top end of the threaded rod penetrates through the inner top of the height limit frame and is fixedly connected to the output end of the first motor. The outer walls of the top ends of the multiple threaded rods are respectively connected through the center of the bottom surfaces of the limit support and the movable support, and the center of the outer wall of the threaded rod is rotatably connected to the center of the inner parts of the limit support and the movable support through threads.

[0008] As described above, a group of limit sliding blocks are fixedly connected to both sides of the outer walls of the limit support and the movable support, and the limit sliding blocks are located at the inner top of the limit sliding groove.

[0009] As described above, one side of the outer wall of the limit sliding block penetrates through the inner top of the limit sliding groove, and both sides of the outer wall of the limit sliding block are slidably connected to both sides of the inner wall of the limit sliding groove.

[0010] As described above, a limit bolt is fixedly connected to the outer wall of one side of the limit support close to the movable support, and a threaded sleeve is sleeved on one end of the outer wall of the limit bolt. One end of the outer wall of the limit bolt is connected through the inner part of one end of the threaded sleeve, and one end of the outer wall of the limit bolt is rotatably connected to the inner part of one end of the threaded sleeve through threads.

[0011] As described above, a movable connecting piece is rotatably connected to the center of the inner part of the movable support, and one side of the outer wall of the movable connecting piece is fixedly connected to one end of the outer wall of the height limit rod. The height limit rod is rotatably connected to one side of the top of the height limit frame through the movable connecting piece and the movable support.

[0012] As described above, a threaded connecting piece is fixedly connected to one end of the outer wall of the height limit rod, and the threaded connecting piece is located at the inner part of one end of the threaded sleeve. One end of the outer wall of the threaded connecting piece is connected through the inner part of one end of the threaded sleeve, and one end of the outer wall of the threaded connecting piece is rotatably connected to the center of the inner part of the threaded sleeve through threads.

[0013] Compared with the prior art, this vehicle restriction device for bridge passage has the following beneficial effects:

[0014] 1. The utility model synchronously drives a plurality of first motors, and the output ends thereof respectively drive the corresponding threaded rods to rotate. As the threaded rods rotate, by utilizing the interaction between the threads on the outer wall thereof and the limit sliding grooves and limit sliding blocks, under the push of the threads on the outer wall of the threaded rod, the limit support and the movable support are urged to vertically move along the inner wall of the limit sliding groove, and further drive the height-limiting rod to achieve lifting adjustment between a plurality of height-limiting frames, thereby actively regulating the height of the height-limiting rod and ensuring that the height-limiting rod can be flexibly adjusted according to actual needs.

[0015] 2. The utility model rotates the threaded sleeve to make it move along the outer wall of the threaded connecting piece and disengage from the limit bolt. Since the height-limiting rod is fixed to the movable connecting piece, when the threaded sleeve rotates on the threaded connecting piece and releases the threaded connection with the threaded connecting piece and the limit bolt, the height-limiting rod, the threaded connecting piece and the threaded sleeve can rotate through the movable connecting piece. Subsequently, the height-limiting rod can be lowered so that special engineering vehicles can pass smoothly above the bridge during special periods, thereby ensuring that the device can respond quickly in case of emergency, enabling the device to quickly respond whether it needs to be temporarily lowered to allow special engineering vehicles to pass during bridge construction or effectively intercept over-high transport vehicles during normal times.

[0016] Other advantages, objectives and features of the utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the utility model with the height-limiting rod lowered;

[0019] Figure 3 is a partial sectional view of the height-limiting frame of the utility model and a partial three-dimensional structural schematic diagram of the limit sliding groove and the limit support;

[0020] Figure 4 is a partial sectional view of the height-limiting frame of the utility model and a partial three-dimensional structural schematic diagram of the limit support;

[0021] Figure 5 is a partial sectional view of the height-limiting frame of the utility model and a partial three-dimensional structural schematic diagram of the limit sliding groove and the movable support;

[0022] Figure 6 is a partial sectional view of the height-limiting frame of the utility model and a partial three-dimensional structural schematic diagram of the threaded rod;

[0023] Figure 7This is a partial cross-sectional three-dimensional structural schematic diagram of the threaded sleeve of the present utility model;

[0024] Figure 8 This is a partial disassembled three-dimensional structural schematic diagram of the height-limiting rod of the present utility model.

[0025] In the figure: 1, height-limiting frame; 2, first motor; 201, threaded rod; 202, limiting chute; 203, limiting slider; 3, limiting support; 301, movable support; 302, height-limiting rod; 303, limiting bolt; 304, threaded sleeve; 305, movable connecting piece; 306, threaded connecting piece. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figure 1-8 shown, the present utility model provides a technical solution: a vehicle restriction device for bridge passage, including a height-limiting frame 1. There are multiple height-limiting frames 1, and a first motor 2 is fixedly connected to the top end inside each height-limiting frame 1. A threaded rod 201 is rotatably connected to the top end inside multiple height-limiting frames 1. At the same time, a plurality of limiting chutes 202 are opened at the top of the outer wall of the height-limiting frame 1. The limiting chutes 202 are located on both sides outside the threaded rod 201. The threaded rod 201 is rotationally connected to the center inside the height-limiting frame 1 through the first motor 2. A limiting support 3 and a movable support 301 are respectively slidably connected to the top end inside multiple height-limiting frames 1 through the first motor 2, the threaded rod 201, and the limiting chutes 202. A height-limiting rod 302 is rotatably connected to one side outside the movable support 301.

[0028] By synchronously driving a plurality of first motors 2, the output ends thereof respectively drive the corresponding threaded rods 201 to rotate. As the threaded rods 201 rotate, by utilizing the interaction between the threads on their outer walls and the limit sliding grooves 202 and limit sliding blocks 203, under the push of the threads on the outer walls of the threaded rods 201, the limit support 3 and the movable support 301 are urged to vertically move along the inner wall of the limit sliding groove 202, and further drive the height-limiting rod 302 to realize lifting adjustment among a plurality of height-limiting frames 1. By rotating the threaded sleeve 304, it moves along the outer wall of the threaded connecting member 306 and disengages from the limit bolt 303. Since the height-limiting rod 302 is fixed to the movable connecting member 305, when the threaded sleeve 304 rotates on the threaded connecting member 306 and releases the threaded connection with the threaded connecting member 306 and the limit bolt 303, the height-limiting rod 302, the threaded connecting member 306, and the threaded sleeve 304 can rotate through the movable connecting member 305. Subsequently, the height-limiting rod 302 can be lowered so that special engineering vehicles can pass smoothly above the bridge during special periods, thereby ensuring that the device can respond quickly in emergency situations. Whether it is necessary to temporarily lower the device to allow special engineering vehicles to pass during bridge construction or to effectively intercept over-height transport vehicles during normal times, the device can respond quickly.

[0029] As Figure 1-6 shown, the outer wall of the top end of the threaded rod 201 is connected through the inner wall top end of the height-limiting frame 1, and the outer wall of the top end of the threaded rod 201 penetrates through the inner top end of the height-limiting frame 1 and is fixedly connected to the output end of the first motor 2. The outer walls of the top ends of a plurality of threaded rods 201 are respectively connected through the center of the bottom surfaces of the limit support 3 and the movable support 301, and the centers of the outer walls of the threaded rods 201 are rotationally connected to the centers of the insides of the limit support 3 and the movable support 301 through threads. By fixedly connecting the threaded rod 201 to the output end of the first motor 2 and penetrating the center of the outer wall of the threaded rod 201 through the centers of the insides of the limit support 3 and the movable support 301, the threaded rod 201 can be rotationally connected to the centers of the insides of the limit support 3 and the movable support 301 through the threads on its outer wall under the drive of the output end of the first motor 2.

[0030] A group of limit sliding blocks 203 are fixedly connected to both sides of the outer walls of the limit support 3 and the movable support 301, and the limit sliding blocks 203 are located at the inner top end of the limit sliding groove 202. One side of the outer wall of the limit sliding block 203 penetrates through the inner top end of the limit sliding groove 202, and both sides of the outer wall of the limit sliding block 203 are slidably connected to both sides of the inner wall of the limit sliding groove 202. By respectively fixing a plurality of limit sliding blocks 203 to both sides of the outer walls of the limit support 3 and the movable support 301 and restricting the movement track of the limit sliding blocks 203 through the limit sliding groove 202, when the limit support 3 and the movable support 301 move, they can only vertically move along the inner wall of the limit sliding groove 202.

[0031] As Figure 1-8As shown, a limit bolt 303 is fixedly connected to the outer wall of the limit support 3 on the side close to the movable support 301. One end of the outer wall of the limit bolt 303 is sleeved with a threaded sleeve 304. One end of the outer wall of the limit bolt 303 penetrates and is connected to the inner end of the threaded sleeve 304, and one end of the outer wall of the limit bolt 303 is rotationally connected to the inner end of the threaded sleeve 304 through a thread. After the limit bolt 303 penetrates the inner end of the threaded sleeve 304, the threaded sleeve 304 can rotate along the outer wall of the limit bolt 303 through the thread on the outer wall of the limit bolt 303.

[0032] A movable connecting piece 305 is rotationally connected to the center of the inner part of the movable support 301. One side of the outer wall of the movable connecting piece 305 is fixedly connected to one end of the outer wall of the height limit rod 302. The height limit rod 302 is rotationally connected to one side of the top of the height limit frame 1 through the movable connecting piece 305 and the movable support 301. After the height limit rod 302 is fixed to the movable connecting piece 305, the height limit rod 302 can rotate around the movable connecting piece 305 as the center without restraint.

[0033] One end of the outer wall of the height limit rod 302 is fixedly connected to a threaded connecting piece 306, and the threaded connecting piece 306 is located at one end of the inner part of the threaded sleeve 304. One end of the outer wall of the threaded connecting piece 306 penetrates and is connected to the inner end of the threaded sleeve 304, and one end of the outer wall of the threaded connecting piece 306 is rotationally connected to the center of the inner part of the threaded sleeve 304 through a thread. By the thread on the outer wall of the threaded connecting piece 306 being in line with the thread on the inner wall of the threaded sleeve 304, and one end of the outer wall of the threaded connecting piece 306 penetrating the center of the inner part of the threaded sleeve 304, the threaded sleeve 304 can threadedly connect the threaded connecting piece 306 and the limit bolt 303.

[0034] Working principle: By fixedly connecting the threaded rod 201 to the output end of the first motor 2 and passing through the center of the outer wall of the threaded rod 201 and the inner centers of the limit support 3 and the movable support 301, the threaded rod 201 can be rotationally connected to the inner centers of the limit support 3 and the movable support 301 through the external thread on the outer wall under the drive of the output end of the first motor 2. By respectively fixing a plurality of limit sliders 203 on both sides of the outer walls of the limit support 3 and the movable support 301 and restricting the movement track of the limit sliders 203 through the limit sliding grooves 202, when the limit support 3 and the movable support 301 move, they can only move vertically along the inner wall of the limit sliding grooves 202. After passing the limit bolt 303 through one end inside the threaded sleeve 304, the threaded sleeve 304 can rotate along the outer wall of the limit bolt 303 through the external thread on the outer wall of the limit bolt 303. After fixing the height-limiting rod 302 to the movable connecting piece 305, the height-limiting rod 302 can rotate around the movable connecting piece 305 without restraint. Since the external thread on the outer wall of the threaded connecting piece 306 is in conformity with the internal thread on the inner wall of the threaded sleeve 304 and one end of the outer wall of the threaded connecting piece 306 passes through the inner center of the threaded sleeve 304, the threaded sleeve 304 can threadedly connect the threaded connecting piece 306 and the limit bolt 303.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle restriction device for bridge traffic, comprising a height restriction frame (1), characterized in that: The height limiting frame (1) is provided with a plurality of them, and the top ends of the interior of the height limiting frame (1) are all fixedly connected to the first motor (2), the top ends of the interior of the plurality of the height limiting frames (1) are all rotatably connected to the threaded rod (201), and the top of the outer wall of the height limiting frame (1) is simultaneously provided with a plurality of limiting sliding grooves (202), the limiting sliding grooves (202) are located on both sides of the exterior of the threaded rod (201), and the threaded rod (201) is rotatably connected to the interior center of the height limiting frame (1) through the first motor (2), the top ends of the interior of the plurality of the height limiting frames (1) are respectively slidably connected to the limiting support (3) and the movable support (301) through the first motor (2), the threaded rod (201) and the limiting sliding groove (202), and the exterior side of the movable support (301) is rotatably connected to the height limiting rod (302).

2. A vehicle restriction device for bridge traffic according to claim 1, characterized in that: The outer wall at the top end of the threaded rod (201) is connected to the top end of the inner wall of the height limiting frame (1), and the outer wall at the top end of the threaded rod (201) is connected to the top end of the inner top of the height limiting frame (1) and is fixedly connected to the output end of the first motor (2). The outer walls at the top end of the plurality of threaded rods (201) are connected to the center of the bottom surface of the position limiting support (3) and the movable support (301) respectively, and the center of the outer wall of the threaded rod (201) is rotatably connected to the inner center of the position limiting support (3) and the movable support (301) through threads.

3. A vehicle restriction device for bridge traffic according to claim 1, characterized in that: A set of limiting sliding blocks (203) are fixedly connected to both sides of the outer walls of the limiting support (3) and the movable support (301), and the limiting sliding blocks (203) are located at the top end inside the limiting sliding groove (202).

4. A vehicle restriction device for bridge traffic according to claim 3, characterized in that: One side of the outer wall of the limiting sliding block (203) passes through the inner top of the limiting sliding groove (202), and two sides of the outer wall of the limiting sliding block (203) are slidably connected to two sides of the inner wall of the limiting sliding groove (202).

5. The vehicle restriction device for bridge passage according to claim 1, characterized in that: The outer wall of the limiting support (3) on one side close to the movable support (301) is fixedly connected to a limiting bolt (303), and one end of the outer wall of the limiting bolt (303) is sleeved with a threaded sleeve (304), the outer wall of one end of the limiting bolt (303) is connected through an inner end of the threaded sleeve (304), and one end of the outer wall of the limiting bolt (303) is rotatably connected to the inner end of the threaded sleeve (304) through a thread.

6. A vehicle restriction device for bridge traffic according to claim 5, characterized in that: The movable support (301) is rotatably connected to a movable connecting piece (305) at its inner center, and one side of the outer wall of the movable connecting piece (305) is fixedly connected to the outer wall of one end of the height limiting rod (302). The height limiting rod (302) is rotatably connected to one side of the top of the height limiting frame (1) via the movable connecting piece (305) and the movable support (301).

7. A vehicle restriction device for bridge traffic according to claim 6, characterized in that: The outer wall of one end of the height limiting rod (302) is fixedly connected with a threaded connector (306), and the threaded connector (306) is located at one end inside the threaded sleeve (304). The outer wall of one end of the threaded connector (306) is connected to the inner end of the threaded sleeve (304) through the outer wall of the threaded connector (306), and one end of the outer wall of the threaded connector (306) is rotatably connected to the inner center of the threaded sleeve (304) through a thread.

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