Bridge height limiting device

Abstract

The utility model discloses a bridge height limiting device which comprises two supporting rods, the upper ends of the supporting rods are fixedly connected with connecting bases, a connecting structure is fixedly connected between the two connecting bases, the connecting structure comprises an electric telescopic rod and two threaded sleeves, the two threaded sleeves are fixed to the two sides of the electric telescopic rod respectively, and the two threaded sleeves are connected with the connecting bases. A threaded connecting rod is installed in the threaded sleeve in a threaded mode, a fixed inserting hole is formed in the connecting base, the other end of the threaded sleeve is inserted into the fixed inserting hole, a sliding rail is fixedly connected to one side of the supporting rod, a height limiting mechanism is installed in the sliding rail in a sliding mode, and the height limiting mechanism comprises a first connecting plate, a second connecting arm and a T-shaped sliding block; the first connecting plate is in sliding connection with the second connecting arm, and a base is fixedly connected to the lower portion of the supporting rod. The supporting rods are fixed to the two sides of the bridge road correspondingly, the length of the connecting structure and the length of the height limiting mechanism can be adjusted according to the distance between the supporting rods, and the device can adapt to the bridge roads with different widths.

Description

Technical Field

[0001] The utility model relates to a height limiting device, in particular to a bridge height limiting device. Background Art

[0002] The bridge height limit frame is a fixed integrated height limit frame mainly used for the gate-type frame at the entrance of bridges, culverts and tunnels. It is generally made of welded steel structure and plays the role of protecting bridges, culverts and tunnels.

[0003] For example, a bridge height limit frame disclosed in a Chinese patent with the publication number CN219450524U includes: a stabilizing rod, an adjusting assembly is provided at the lower end thereof, and a shell is installed at the outer end of the adjusting assembly, a connecting plate is provided inside the shell, and the adjusting assembly is composed of an adjusting rod, a connecting block, a bottom plate and a limiting groove; a motor is provided at the front end of the shell, a stabilizing assembly is installed at the lower end of the adjusting assembly, and the stabilizing assembly is composed of a mounting plate, a support rod, an auxiliary plate and an adjusting bolt; a horizontal plate is provided at the inner end of the stabilizing rod, and a reflective plate is provided at the front end of the horizontal plate; a supporting plate is installed at the upper end of the stabilizing rod, and a camera assembly is provided at the upper end of the supporting plate, and a camera is installed inside the camera assembly. This bridge height limit frame solves the problem that the existing bridge height limit frames are not convenient for automatically adjusting the height of the bridge elevated frame according to demand, and are not convenient for increasing the stability of placement;

[0004] Some problems were found during the use of the above-mentioned existing bridge height limit frame. First, its adjustment components are often set on both sides of the bridge road, and the length of its height limit components such as cross plates cannot be adjusted, resulting in a limited distance between the two adjustment components, and thus making the device unable to adapt to the height limits of bridge roads of different widths, resulting in low applicability. Utility Model Content

[0005] The purpose of the present utility model is to provide a bridge height limiting device to solve the existing problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge height limiting device, comprising two support rods, the upper ends of the support rods are fixedly connected to connecting seats, a connecting structure is fixedly connected between the two connecting seats, the connecting structure comprises an electric telescopic rod and two threaded sleeves, the two threaded sleeves are respectively fixed on both sides of the electric telescopic rod, a threaded connecting rod is installed with a threaded inner thread of the threaded sleeve, a fixed plug-in hole is opened in the connecting seat, the other end of the threaded sleeve is inserted into the fixed plug-in hole, a slide rail is fixed to one side of the support rod, a height limiting mechanism is slidably installed in the slide rail, and the height limiting mechanism comprises a first connecting plate, a second connecting arm, and a T-shaped slider, and the first connecting plate is slidably connected to the second connecting arm.

[0007] Preferably, a base is fixedly connected to the bottom of the support rod, a fixing threaded through hole is provided on the top of the connecting seat, a first fixing bolt is installed with a thread in the fixing threaded through hole, a limiting hole is provided in the threaded connecting rod, and the limiting hole cooperates with the first fixing bolt.

[0008] Preferably, the lower end of the electric telescopic rod is fixed with a U-shaped connecting seat, a second threaded sleeve is embedded in the U-shaped connecting seat, a second fixing bolt is installed in the inner thread of the second threaded sleeve, and a fixing through hole is opened on the front side of the first connecting plate, and the fixing through hole cooperates with the second fixing bolt.

[0009] Preferably, there are two first connecting plates, which are symmetrically arranged front to back. A limiting slider is fixed on the two first connecting plates, and a limiting slot is provided on the second connecting arm. The limiting slot is slidably engaged with the limiting slider.

[0010] Preferably, the opposing surfaces of the two limit sliders are fixed with dovetail sliders, the front and back surfaces of the second connecting arm are provided with dovetail grooves, the dovetail grooves are slidably matched with the limit sliders, and one end of the second connecting arm is provided with a snap-in groove, the snap-in groove is matched with the T-shaped slider.

[0011] Preferably, a connecting through hole is provided on the second connecting arm, the connecting through hole is communicated with the inside of the clamping groove, a third threaded sleeve is embedded in the T-shaped slider, a third fixing bolt is installed on the inner thread of the third threaded sleeve, and the third fixing bolt cooperates with the connecting through hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By using fixing bolts to connect the connecting structure and the height limiting mechanism between the two support rods, the support rods, the connecting structure and the height limiting mechanism are connected together in an assembly manner. In the early stage, they can be directly disassembled for transportation, which is more convenient than overall transportation.

[0014] 2. By fixing the support rods on both sides of the bridge road, the connection structure and the height limiting mechanism can adjust their own length according to the spacing between the support rods, so that the device can adapt to bridge roads of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the support rod structure of the utility model;

[0017] Figure 3 This is an exploded view of the connection structure of the utility model;

[0018] Figure 4 This is an exploded view of the height limiting mechanism of the present utility model.

[0019] In the figure: 1. Support rod; 101. Base; 102. Slide rail; 103. Connecting seat; 104. Plug hole; 105. Fixed threaded through hole; 106. First fixing bolt; 2. Connecting structure; 201. Electric telescopic rod; 202. Threaded sleeve; 203. Threaded connecting rod; 204. Limiting hole; 205. U-shaped connecting seat; 206. Second threaded sleeve; 207. Second fixing bolt; 3. Height limiting mechanism; 301. First connecting plate; 302. Second connecting arm; 303. Fixed through hole; 304. Dovetail slider; 305. Limiting slider; 306. Dovetail slide groove; 307. Limiting slide groove; 308. Clamping groove; 309. Connecting through hole; 310. T-shaped slider; 311. Third threaded sleeve; 312. Third fixing bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: a bridge height limiting device, comprising two support rods 1, the upper ends of the support rods 1 are fixedly connected with a connecting seat 103, a connecting structure 2 is fixedly connected between the two connecting seats 103, the connecting structure 2 comprises an electric telescopic rod 201, two threaded sleeves 202, the two threaded sleeves 202 are respectively fixed on both sides of the electric telescopic rod 201, a threaded connecting rod 203 is installed with an internal thread of the threaded sleeve 202, a fixed plug hole 104 is opened in the connecting seat 103, the other end of the threaded sleeve 202 is plugged into the fixed plug hole 104, a slide rail 102 is fixed on one side of the support rod 1, and a height limiting mechanism 3 is slidably installed in the slide rail 102, the height limiting mechanism 3 comprises a first connecting plate 301, a second connecting arm 302, and a T-shaped slider 310, the first connecting plate 301 is slidably connected to the second connecting arm 302.

[0022] In this embodiment, a threaded telescopic rod can be formed by the threaded sleeve 202 and the threaded connecting rod 203. The overall length of the connecting structure 2 can be adjusted by rotating the threaded connecting rod 203. The first connecting plate 301 is slidably connected to the second connecting arm 302, so that the overall length of the height limiting mechanism 3 can be adjusted by sliding the second connecting arm 302. The T-shaped slider 310 slides with the slide rail 102, and then the T-shaped slider 310 is used to slide the height limiting mechanism 3 and the support rod 1 together. The connecting structure 2 and the height limiting mechanism 3 can adjust their own lengths according to the spacing between the support rods 1, so that the device can adapt to bridges and roads of different widths. Secondly, the support rod 1, the connecting structure 2, and the height limiting mechanism 3 are all fixed together with bolts, and can be directly disassembled for transportation in the early stage, which is more convenient than overall transportation.

[0023] Among them, in order to achieve the purpose of fixing the height limiting mechanism 3 to the upper end of the support rod 1, this device adopts the following technical solutions: a base 101 is fixedly connected to the bottom of the support rod 1, a fixing threaded through hole 105 is opened on the connecting seat 103, and a first fixing bolt 106 is installed with an internal thread of the fixing threaded through hole 105. A limiting hole 204 is opened in the threaded connecting rod 203, and the limiting hole 204 cooperates with the first fixing bolt 106. A U-shaped connecting seat 205 is fixed to the lower end of the electric telescopic rod 201, and a second threaded sleeve 206 is embedded in the U-shaped connecting seat 205. A second fixing bolt 207 is installed with an internal thread of the second threaded sleeve 206. A fixing through hole 303 is opened on the front of the first connecting plate 301, and the fixing through hole 303 cooperates with the second fixing bolt 207.

[0024] The support rod 1 can be fixed on both sides of the bridge road through the base 101 and the pins, and the threaded connecting rod 203 is inserted into the fixed plug hole 104 to align the limiting hole 204 with the fixed threaded through hole 105. Tighten the first fixing bolt 106 and insert it into the limiting hole 204 to fix the threaded connecting rod 203 in the fixed plug hole 104, and then connect the support rod 1 with the height limiting mechanism 3 together. The U-shaped connecting seat 205 can be stuck on the first connecting plate 301, and the second fixing bolt 207 is rotated to insert it into the fixed through hole 303, so that the U-shaped connecting seat 205 and the first connecting plate 301 can be connected together, and then starting the electric telescopic rod 201 can drive the height limiting mechanism 3 to move and adjust the height of the height limiting mechanism 3.

[0025] Among them, in order to achieve the purpose of sliding connection between the first connecting plate 301 and the second connecting arm 302, the present device adopts the following technical solutions: the number of the first connecting plates 301 is two, and they are symmetrically arranged front and back. The two first connecting plates 301 are fixedly connected with the limit sliders 305, and the second connecting arm 302 is provided with a limit slide 307. The limit slide 307 slides with the limit slider 305. The opposite surfaces of the two limit sliders 305 are fixed with dovetail sliders 304. The front and back surfaces of the second connecting arm 302 are both provided with dovetail sliders. The slide groove 306 and the dovetail slide groove 306 are slidably matched with the limit slider 305. A clamping groove 308 is provided at one end of the second connecting arm 302. The clamping groove 308 cooperates with the T-shaped slider 310. A connecting through hole 309 is provided on the second connecting arm 302. The connecting through hole 309 is communicated with the inside of the clamping groove 308. A third threaded sleeve 311 is embedded in the T-shaped slider 310. The third threaded sleeve 311 is internally threaded with a third fixing bolt 312. The third fixing bolt 312 cooperates with the connecting through hole 309.

[0026] By utilizing the dovetail slide groove 306 to slide with the dovetail slider 304, the second connecting arm 302 is slidably installed between the two first connecting plates 301, and the limiting slider 305 slides with the limiting slide groove 307 to limit the stroke of the second connecting arm 302 to prevent the second connecting arm 302 from separating from the first connecting plate 301. By pulling the second connecting arm 302 outward, the overall length of the height limiting mechanism 3 can be adjusted, and the T-shaped slider 310 is clamped inside the clamping groove 308, and the third fixing bolt 312 is passed through the connecting through hole 309 and screwed into the third threaded sleeve 311 to fix the T-shaped slider 310 in the clamping groove 308. Then, the T-shaped slider 310 is slidably installed in the slide rail 102, and the height limiting mechanism 3 can be slidably installed between the two support rods 1.

[0027] The working principle and usage process of the utility model: When in use, the support rods 1 need to be fixed on both sides of the bridge road. According to the spacing between the two support rods 1, the two threaded connecting rods 203 are rotated to adjust the overall length of the connecting structure 2, and the second connecting arm 302 is continuously pulled out between the two first connecting plates 301 to adjust the overall length of the height limiting mechanism 3, so that the connecting structure 2 is fixed at the upper ends of the two support rods 1 and slidably installed between the two support rods 1. The U-shaped connecting seat 205 is used to be clamped on the first connecting plate 301, and the electric telescopic rod 201 is connected to the height limiting mechanism 3. Starting the electric telescopic rod 201 can drive the height limiting mechanism 3 to move up and down, thereby adjusting the height of the height limiting mechanism 3 from the ground.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge height limiting device, comprising two support rods (1), characterized in that: The upper end of the support rod (1) is fixedly connected to a connecting seat (103), and a connecting structure (2) is fixedly connected between the two connecting seats (103). The connecting structure (2) includes an electric telescopic rod (201) and two threaded sleeves (202). The two threaded sleeves (202) are respectively fixed on both sides of the electric telescopic rod (201). A threaded connecting rod (203) is installed in the threaded sleeve (202). A fixed plug hole (104) is provided in the connecting seat (103). The other end of the threaded sleeve (202) is inserted into the fixed plug hole (104). One side of the support rod (1) is fixedly connected to a slide rail (102). A height limiting mechanism (3) is slidably installed in the slide rail (102). The height limiting mechanism (3) includes a first connecting plate (301), a second connecting arm (302), and a T-shaped slider (310). The first connecting plate (301) is slidably connected to the second connecting arm (302).

2. A bridge height limiting device according to claim 1, characterized in that: A base (101) is fixedly connected to the bottom of the support rod (1), a fixing threaded through hole (105) is provided on the top of the connecting seat (103), a first fixing bolt (106) is installed with an internal thread of the fixing threaded through hole (105), a limiting hole (204) is provided in the threaded connecting rod (203), and the limiting hole (204) and the first fixing bolt (106) cooperate with each other.

3. The bridge height limiting device according to claim 1, characterized in that: The lower end of the electric telescopic rod (201) is fixedly connected to a U-shaped connecting seat (205), a second threaded sleeve (206) is embedded in the U-shaped connecting seat (205), a second fixing bolt (207) is internally threadedly installed in the second threaded sleeve (206), and a fixing through hole (303) is opened on the front of the first connecting plate (301), and the fixing through hole (303) and the second fixing bolt (207) cooperate with each other.

4. A bridge height limiting device according to claim 1, characterized in that: There are two first connecting plates (301) symmetrically arranged front to back, and a limiting slider (305) is fixedly connected to the two first connecting plates (301). A limiting slot (307) is provided on the second connecting arm (302), and the limiting slot (307) is slidably matched with the limiting slider (305).

5. A bridge height limiting device according to claim 4, characterized in that: The opposing surfaces of the two limit sliders (305) are fixed with dovetail sliders (304), the front and rear surfaces of the second connecting arm (302) are provided with dovetail slots (306), the dovetail slots (306) are slidably matched with the limit sliders (305), and one end of the second connecting arm (302) is provided with a snap-fitting slot (308), the snap-fitting slot (308) is matched with the T-shaped slider (310).

6. A bridge height limiting device according to claim 5, characterized in that: A connecting through hole (309) is provided on the second connecting arm (302), and the connecting through hole (309) is communicated with the inside of the clamping groove (308). A third threaded sleeve (311) is embedded in the T-shaped slider (310), and a third fixing bolt (312) is installed in the inner thread of the third threaded sleeve (311), and the third fixing bolt (312) cooperates with the connecting through hole (309).

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