Bridge height limiting device for highway engineering

Abstract

The utility model relates to the technical field of road height limiting, in particular to a bridge height limiting device for highway engineering. The tops of the two supports are each provided with a lifting mechanism, each lifting mechanism is rotationally connected with an intercepting rod single body, and the two intercepting rod single bodies are detachably connected to form an intercepting frame for height limiting. According to different height limiting requirements, the lifting mechanism can drive the whole intercepting frame to ascend and descend; when an over-limit vehicle is notified to pass in advance, the two intercepting rod single bodies are disconnected, and each intercepting rod single body rotates around the lifting mechanism, so that the vehicle passes, namely, the height limiting device simultaneously has the functions of lifting and relieving height limit; the lifting mechanism is protected by arranging the protective cover, and rain, snow, sand, sand or other sundries can be prevented from entering the servo motor to affect work. The side wall of the support is coated with scale marks, so that height limiting adjustment personnel can conveniently observe and compare; a warning strip and a signboard are arranged on the side wall of the intercepting frame, and the safety of vehicle driving is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road height limitation, in particular to a bridge height limitation device for highway engineering. Background Art

[0002] Highway engineering refers to the survey, measurement, design, construction, maintenance, and management of highway structures. Highway engineering structures include: roadbed, pavement, bridges, culverts, tunnels, drainage systems, safety protection facilities, greening, and traffic monitoring facilities. In highway engineering, bridge height limits are an indispensable link to ensure the safety of bridges.

[0003] After the height limit device is set up, vehicles often collide with the height limit device, or in special circumstances, an overheight vehicle needs to pass through the height limit device to enter the road ahead. Conventional height limit devices can only be lifted upward to solve the problem, but when the vehicle is higher than the highest point of the height limit device, it can only be dismantled to allow the vehicle to pass. Utility Model Content

[0004] The purpose of the utility model is to provide a bridge height limiting device for highway engineering, which can not only lift the interception frame according to different height limit requirements, but also divide the interception frame into two, and the two interception rod monomers constituting the interception frame can be rotated 90° upward or downward horizontally to release the height limit.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a bridge height limiting device for highway engineering, including supports respectively erected on both sides of the bridge deck; a lifting mechanism is respectively provided on the top of the two supports, each lifting mechanism is rotatably connected to a blocking rod unit, and the two blocking rod units are detachably connected to form a blocking frame for height limitation; the lifting mechanism is used to drive the blocking frame to rise and fall according to different height limit requirements; when the height limit needs to be released, the two blocking rod units that constitute the blocking frame are disconnected, and each blocking rod unit can be rotated 90° from horizontal to upward or downward around the lifting mechanism to allow vehicles to pass.

[0006] As a preferred technical solution, an equipment cavity is provided in the upper parts of the two supports, and a vertical opening is provided on the side of the equipment cavity facing the bridge deck.

[0007] As a preferred technical solution, the lifting mechanism includes a threaded shaft, a servo motor, a bevel gear set and a lifting block; the bottom of the threaded shaft is rotatably connected to the base inside the equipment cavity, and the top of the threaded shaft extends upward to the outside of the equipment cavity; a lifting block is threadedly connected to the threaded shaft, and a part of the lifting block extends outward through the opening of the equipment cavity and is connected to the intercepting rod monomer; the servo motor is arranged on one side of the top of the threaded shaft; the bevel gear set serves as a power transmission component and is arranged between the output end of the servo motor and the threaded shaft.

[0008] As a preferred technical solution, a portion of the lifting block is located outside the equipment cavity and is threadedly connected to a connecting block, one end of the connecting block is provided with a through hole, and a rotating shaft is connected to the through hole; one end of the intercepting rod unit is rotatably connected to the connecting block through the rotating shaft, and the intercepting rod unit can rotate upward or downward with the rotating shaft as the axis.

[0009] As a preferred technical solution, one side of the top of the two supports away from the interception frame extends outward and is provided with an equipment table, and the servo motor is placed on the equipment table; and / or, an oblique support rod is welded between the bottom of each equipment table and the support.

[0010] As a preferred technical solution, a protective cover is provided on the top of the support, and the top of the protective cover is arranged above the servo motor and the equipment cavity.

[0011] As a preferred technical solution, the protective cover is hooked with a single interception rod that is rotated upward to be vertical.

[0012] As a preferred technical solution, a lap plate is welded to one end of the intercepting rod monomer away from the support, and the two lap plates are fixed by bolts and nuts.

[0013] As a preferred technical solution, a first lifting ear is fixed to the top of each of the two intercepting rod monomers.

[0014] As a preferred technical solution, scale lines are painted on the side wall of the support;

[0015] And / or, the side wall of the interception frame is provided with a reflective or self-luminous warning strip;

[0016] And / or, a signboard is also provided on the side wall of the interception frame, on which a height limit value or other warning slogans are indicated.

[0017] The beneficial effects of the utility model are:

[0018] Firstly, the utility model is a bridge height limit device for highway engineering, which can not only raise and lower the interception frame according to different height limit requirements, but also divide the interception frame into two, and the two interception rod monomers constituting the interception frame can remove the height limit by rotating 90° horizontally upward or downward respectively.

[0019] Secondly, the two interception rod units that make up the interception frame are detachably connected, so if the interception frame is damaged, it is easy to remove and replace.

[0020] Again, a protective cover is set above the servo motor and the equipment cavity to protect the lifting mechanism and prevent rain, snow, wind, sand or other debris from entering the servo motor and affecting its operation.

[0021] In addition, there are scale lines painted on the side wall of the support, through which the specific height of the height limit can be observed, which is convenient for the height limit adjustment personnel to observe and compare;

[0022] The side walls of the interception frame are equipped with warning strips and signboards to improve the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of a bridge height limiting device used in highway engineering.

[0024] Figure 2 It is a schematic diagram of a lifting mechanism in a bridge height limiting device used in highway engineering.

[0025] Figure 3 It is a schematic diagram of an intercepting plate of a bridge height limiting device used in highway engineering after it is rotated upward.

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0027] In the figure: 1. support; 11. equipment cavity; 12. equipment table; 13. scale line; 2. lifting mechanism; 21. threaded shaft; 22. servo motor; 23. bevel gear set; 24. lifting block; 3. intercepting rod; 31. lap plate; 32. warning strip; 33. identification plate; 34. first lifting ear; 35. second lifting ear; 4. protective cover; 41. hook; 5. connecting block; 6. rotating shaft. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] like Figure 1-4 As shown, the utility model provides a bridge height limiting device for highway engineering, including supports 1 respectively erected on both sides of the bridge deck; the support 1 is installed so as not to affect the driving lane, and the vehicle passes through the bridge deck between the two supports 1; a lifting mechanism 2 is respectively provided on the top of the two supports 1, and each lifting mechanism is rotatably connected to a blocking rod monomer, and the two blocking rod monomers are detachably connected to form a blocking frame 3 for height limitation, and the lifting mechanism is used to drive the blocking frame to rise and fall according to different height limit requirements; when the height limit needs to be released, the two blocking rod monomers are disassembled, and each blocking rod monomer is rotated 90° upward or downward around the lifting mechanism from the horizontal to allow the vehicle to pass.

[0030] Preferably, a lap plate 31 is welded to one end of the interception bar unit away from the support 1. When installing the device, the two lap plates 31 are attached together so that the two interception bar units are in the same straight line, and the two lap plates 31 are fixed by bolts and nuts. A first lifting ear 34 is welded to the top of the interception bar unit. When the height limit needs to be released, the bolts and nuts between the two lap plates 31 are screwed out, the sling is hooked to the first lifting ear 34, and the interception bar unit is slowly rotated.

[0031] An equipment platform 12 is extended outwardly from one side of the top of the two supports 1 away from the interception frame, and an oblique support rod is welded between the bottom of each equipment platform 12 and the support 1 to prevent the equipment platform 12 from bending backward.

[0032] Preferably, an equipment cavity 11 is provided in the upper part of the support 1 .

[0033] like Figure 2 As shown, the lifting mechanism 2 includes a threaded shaft 21, a servo motor 22, a bevel gear set 23 and a lifting block 24. The threaded shaft 21 is rotatably connected to the internal base of the equipment cavity 11 along the vertical direction. The lifting block 24 is threadedly connected to the threaded shaft 21, and the top of the threaded shaft 21 extends upward to the outside of the equipment cavity 11; the servo motor 22 is horizontally arranged on the top of the equipment platform 12, and the bevel gear set 23 is arranged between the output end of the servo motor 22 and the top of the threaded shaft 21 to realize the rotational drive of the threaded shaft 21 by the servo motor; a vertical opening is provided on the side of the equipment cavity 11 facing the bridge deck, and a part of the lifting block 24 extends through the opening to the outside of the equipment cavity 11 and is connected to the intercepting rod monomer.

[0034] When the height limit of the bridge needs to be adjusted, the servo motors 22 on the two supports 1 are started at the same time, so that the two servo motors 22 rotate synchronously, and the force is transmitted to the respective threaded shafts 21 through the bevel gear set 23. The two threaded shafts 21 rotate and drive the two lifting blocks 24 to lift and lower at the same time, further driving the interception frame 3 to lift and lower synchronously, and the height limit adjustment is completed. The equipment cavity 11 serves as a receiving cavity for the threaded shaft 21, and can also limit the left and right rotation of the lifting block 24.

[0035] Preferably, the part of the lifting block 24 located outside the equipment cavity is threadedly connected to the connecting block 5. When the connecting block 5 needs to be removed, the bolt can be unscrewed; a through hole is opened at one end of the connecting block 5, and the rotating shaft 6 is connected in the through hole; one end of the intercepting rod monomer is rotatably connected to the connecting block 5 through the rotating shaft 6, so that the intercepting rod monomer can rotate upward or downward with the rotating shaft 6 as the axis.

[0036] like Figure 3As shown, when the traffic control department notifies that there will be special passage for overweight vehicles, the interception frame 3 can be rotated up or down in advance, and reconnected after the overweight vehicle passes. If an overweight vehicle rushes through the interception frame 3 during normal traffic on the bridge, in order to avoid secondary damage to the vehicle caused by the interception frame 3 when the vehicle retreats, the interception frame 3 is first raised to the highest point. If the vehicle collides at the highest point of the interception frame 3, the interception frame 3 can be lifted upward to release the restriction of the interception frame 3. If the interception frame 3 is damaged, the bolts on the connecting block 5 can be unscrewed and then removed and replaced with a new interception frame 3.

[0037] Preferably, a protective cover 4 is provided on the top of the support 1, and the protective cover 4 is welded to the side wall of the equipment platform 12. The top of the protective cover 4 is arranged above the servo motor 22 and the equipment cavity 11 to protect the lifting mechanism and prevent rain, snow, wind, sand or other debris from entering the servo motor 22 and affecting the operation.

[0038] like Figure 4 As shown, preferably, the protective cover 4 can be hooked with the interception rod monomer that is rotated upward to a vertical position. The top of the protective cover 4 is rotatably connected with a hook 41, and one end of the interception rod monomer is provided with a second hanging ear 35. When the interception rod monomer is rotated upward to a vertical position, the position of the second hanging ear 35 just corresponds to the hook 41, and the second hanging ear 35 is hooked to the hook 41 by manpower to prevent the interception rod monomer from rotating downward and falling back.

[0039] Preferably, scale lines 13 are painted on the side wall of the support 1, through which the specific height of the height limit can be observed, which is convenient for the height limit adjuster to observe and compare.

[0040] Preferably, a warning strip 32 is provided on the side wall of the interception frame 3. The warning strip 32 can be reflective or self-luminous. The warning strip 32 reminds the moving vehicle that there is a height limit device in front. The side wall of the interception frame 3 is also provided with a signboard 33, on which the height limit value or other warning slogans are indicated.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bridge height limiting device for highway engineering, comprising supports respectively erected on both sides of the bridge deck; characterized in that: A lifting mechanism is provided on the top of each of the two supports, and each lifting mechanism is rotatably connected to a blocking rod monomer. The two blocking rod monomers are detachably connected to form an interception frame for height limitation; the lifting mechanism is used to drive the interception frame to rise and fall according to different height limit requirements; when the height limit needs to be released, the two interception rod monomers that constitute the interception frame are disconnected, and each interception rod monomer can be rotated upward or downward around the lifting mechanism from the horizontal to allow the vehicle to pass.

2. The bridge height limiting device for highway engineering as claimed in claim 1, characterized in that: The upper parts of the two supports are each provided with an equipment cavity, and a vertical opening is provided on the side of the equipment cavity facing the bridge deck.

3. The bridge height limiting device for highway engineering as claimed in claim 2, characterized in that: The lifting mechanism includes a threaded shaft, a servo motor, a bevel gear set and a lifting block; the bottom of the threaded shaft is rotatably connected to the base inside the equipment cavity, and the top of the threaded shaft extends upward to the outside of the equipment cavity; a lifting block is threadedly connected to the threaded shaft, and a part of the lifting block extends outward through the opening of the equipment cavity and is connected to the intercepting rod monomer; the servo motor is arranged on one side of the top of the threaded shaft; the bevel gear set serves as a power transmission component and is arranged between the output end of the servo motor and the threaded shaft.

4. The bridge height limiting device for highway engineering as claimed in claim 3, characterized in that: A part of the lifting block is located outside the equipment cavity and is threadedly connected to a connecting block. A through hole is opened at one end of the connecting block, and a rotating shaft is connected inside the through hole. One end of the intercepting rod monomer is rotatably connected to the connecting block through the rotating shaft, and the intercepting rod monomer can rotate upward or downward with the rotating shaft as the axis.

5. The bridge height limiting device for highway engineering as claimed in claim 3, characterized in that: The tops of the two supports are extended outwards on one side away from the interception frame and are provided with an equipment platform, and the servo motor is placed on the equipment platform; and / or, an oblique support rod is welded between the bottom of each equipment platform and the support.

6. The bridge height limiting device for highway engineering as claimed in claim 3, characterized in that: A protective cover is arranged on the top of the support, and the top of the protective cover is arranged above the servo motor and the equipment cavity.

7. The bridge height limiting device for highway engineering as claimed in claim 6, characterized in that: The protective cover is hooked with the interception rod body which is rotated upward to be vertical.

8. The bridge height limiting device for highway engineering as claimed in claim 1, characterized in that: A lap plate is welded to one end of the interception rod monomer away from the support, and the two lap plates are fixed by bolts and nuts.

9. The bridge height limiting device for highway engineering as claimed in claim 1, characterized in that: The tops of the two interception rod monomers are both fixed with first lifting ears.

10. The bridge height limiting device for highway engineering as claimed in claim 1, characterized in that: Graduation lines are painted on the side walls of the support; And / or, the side wall of the interception frame is provided with a reflective or self-luminous warning strip; And / or, a signboard is also provided on the side wall of the interception frame, on which a height limit value or other warning slogans are indicated.

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