Telescopic truss structure suitable for bridge inspection vehicle
By adopting sliding truss and winch structures on the bridge inspection vehicle, the high cost and high maintenance problems caused by rack and rack and reducer in the prior art are solved, and a more efficient truss telescopic function is achieved.
Patent Information
- Application Number
- CN202422148448.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Existing bridge inspection vehicles need to assemble racks and reducers on the trusses, and use racks and racks to achieve telescopic function, resulting in high processing and installation costs and time-consuming and labor-intensive daily maintenance.
The sliding truss and hoist structure is adopted. By operating the rope-out direction of the hoist, the sliding truss is pulled with a wire rope to achieve the telescopic function of the truss, eliminating the use of rack and rack and reducer.
Reduces processing, installation and maintenance costs, improves operating efficiency, and simplifies maintenance processes.
Smart Images
Figure CN223226477U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge inspection vehicles, in particular to a telescopic truss structure suitable for bridge inspection vehicles. Background Art
[0002] In modern transportation, bridges are structures built across mountain streams, over poor geology, or to facilitate travel. Bridges not only fulfill important transportation functions but are also highly complex. Their health is crucial for transportation safety and the safety of people and property, necessitating their inspection and maintenance. A bridge inspection vehicle is a specialized engineering vehicle designed to provide a work platform for bridge inspectors and maintenance personnel during bridge inspection and maintenance. It can be equipped with bridge inspection equipment and maintenance tools for mobile inspection and maintenance. It can be relocated at any time, allowing inspectors to safely and quickly access their work locations for inspection and maintenance. The structural and functional requirements for inspection vehicles vary greatly depending on the type of bridge structure. To ensure the inspection and maintenance of the lower chord steel beams of a highway bridge while simultaneously saving costs and improving maintenance efficiency, a vehicle with a telescopic truss structure is required to cover the entire bottom of the beam. To address this need, the present authors have designed a telescopic truss structure for a bridge inspection vehicle based on practical application to meet the functional requirements of such vehicles.
[0003] Most existing bridge inspection vehicles require a rack and a reducer to be assembled on the truss, with gears attached to the reducer. This meshing of the rack and pinion allows the truss to extend and retract. The rack requires machining and heat treatment, and the reducer must be purchased and assembled, resulting in high processing and installation costs. Furthermore, the meshing of the rack and pinion to achieve this telescopic function requires protection from debris that could damage the gears during daily use, requiring regular cleaning and maintenance, which is time-consuming and labor-intensive.
[0004] Therefore, in view of the above technical problems, it is necessary to propose a telescopic truss structure suitable for a bridge inspection vehicle. Utility Model Content
[0005] The purpose of the present utility model is to provide a telescopic truss structure suitable for bridge inspection vehicles, so as to solve the problem that most existing bridge inspection vehicles mentioned in the background art need to assemble a rack and a reducer on the truss, and install a gear on the reducer to realize the telescopic function of the truss by meshing the rack and gear. The rack needs to be machined and heat-treated, and the reducer needs to be purchased and assembled, which results in high processing and installation costs. At the same time, the telescopic function is realized by meshing the rack and gear, and during daily use, it is necessary to prevent debris from falling and causing gear damage, and the rack and gear need to be cleaned and maintained regularly, which is a time-consuming and labor-intensive maintenance process.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a telescopic truss structure suitable for a bridge inspection vehicle, comprising a main truss, a sliding truss, and a winch:
[0007] A lower guide wheel is provided inside the main truss, and guide pulleys are provided at both ends of the main truss. The sliding truss is nested inside the main truss. The sliding truss has a guide track provided at the bottom of the sliding truss. The guide track and the lower guide wheel are engaged with each other to realize the movement of the sliding truss relative to the main truss. Fixed plates are provided at both ends of the sliding truss. The winch is provided inside the main truss. The winch wire rope is pulled to both ends and connected with the fixed plates at both ends of the sliding truss. The winch controls the wire rope to drive the sliding truss to slide to realize the telescopic function of the truss.
[0008] By adopting the above technical solution, the telescopic function of the truss can be achieved by operating the rope output direction of the winch and pulling the sliding truss with a wire rope. The winch is used instead of the reducer, and there is no need for a gear rack, which saves the processing cost of the rack and the purchase cost of the reducer. The installation, operation and maintenance process of the winch is also simpler. From the perspective of processing, installation, operation and maintenance, costs are saved and efficiency is improved.
[0009] Preferably, the main truss is composed of six main chords, a plurality of vertical webs, diagonal webs and cross braces, and the internal structure of the main truss is composed of two layers.
[0010] By adopting the above technical solution, the structural strength of the main truss can be improved. The upper layer of the main truss can provide a working space for maintenance personnel and place maintenance equipment, and the lower layer can be used to arrange a winch.
[0011] Preferably, the main truss further has an upper guide wheel arranged inside the main truss, and the upper guide wheel is a flat-bottomed type and abuts against the top of the sliding truss.
[0012] By adopting the above technical solution, the sliding truss can slide more smoothly inside the main truss.
[0013] Preferably, the lower guide wheel is V-shaped, and the guide track is provided with two tracks composed of round steel and equilateral angle steel, and the guide track is engaged with the V-shaped lower guide wheel at the bottom inside the main truss.
[0014] By adopting the above technical solution, it can be ensured that derailment does not occur when the sliding truss slides inside the main truss.
[0015] Preferably, the winch is arranged at the center of the lower structure of the main truss, and the winch wire rope is pulled to both ends respectively, passes around the guide pulley of the main truss, and is fixed on the fixed plate of the sliding truss.
[0016] By adopting the above technical solution, the sliding truss can be pulled by the wire rope by operating the rope output direction of the winch, thereby controlling the sliding displacement of the sliding truss within the main truss.
[0017] Preferably, the guide pulley is composed of a guide wheel, a bearing and a pin, and is installed on the inner chords at both ends of the main truss through bolts and nuts. The guide pulley abuts against the wire rope pulled out by the winch.
[0018] By adopting the above technical solution, a guiding effect can be achieved on the wire rope.
[0019] Preferably, two fixing plates are provided, and the two fixing plates are provided at both ends of the sliding truss, and the two fixing plates are respectively connected to the steel wire rope pulled out by the winch.
[0020] By adopting the above technical solution, the sliding truss can be driven to move by the traction of the wire rope.
[0021] Compared with the prior art, the beneficial effects of the present invention are: by providing a sliding truss and a winch, the telescopic function of the truss can be achieved by operating the rope output direction of the winch and pulling the sliding truss with a wire rope, and the winch is used instead of the reducer, and there is no need for a gear rack, which saves the processing cost of the rack and the purchase cost of the reducer. The installation, operation and maintenance process of the winch is also simpler. From the perspective of processing, installation, operation and maintenance, costs are saved and efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the overall side cross-sectional structure of the utility model;
[0024] Figure 3 This is a schematic diagram of the front cross-sectional structure of the connection between the main truss and the telescopic truss of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the utility model in which the winch rotates to drive the telescopic truss to extend outward;
[0026] Figure 5 This is a schematic diagram of the utility model in which the winch rotates to drive the telescopic truss to retract.
[0027] Reference numerals in the figure: 1. main truss; 101. upper guide wheel; 102. lower guide wheel; 103. guide pulley; 2. sliding truss; 201. guide rail; 202. fixed plate; 3. winch. DETAILED DESCRIPTION
[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0031] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.
[0032] like Figures 1 to 5 As shown, this embodiment provides a technical solution: a telescopic truss structure suitable for a bridge inspection vehicle, including a main truss 1, a sliding truss 2 and a winch 3:
[0033] The main truss 1 is composed of six main chords, several vertical webs, diagonal webs and cross braces. The webs, cross braces and main chords are all welded to achieve the effect of tightening. The internal structure of the main truss 1 is divided into two layers, which can improve the structural strength of the main truss 1. The upper layer of the main truss 1 can provide a working space for maintenance personnel and place maintenance equipment. The lower layer can be used to arrange the winch 3. The interior of the main truss 1 is provided with a lower guide wheel 102, and guide pulleys 103 are provided at both ends of the main truss 1. The sliding truss 2 is nested in the interior of the main truss 1. The telescopic truss is composed of four main chords, several vertical webs, diagonal webs and cross braces. The web members, cross braces and main chords are all connected by welding to achieve the effect of tightening. The sliding truss 2 has a guide track 201 arranged at the bottom of the sliding truss 2. The guide track 201 and the lower guide wheel 102 are engaged with each other to realize the movement of the sliding truss 2 relative to the main truss 1. Fixed plates 202 are provided at both ends of the sliding truss 2. The winch 3 is arranged inside the main truss 1. The wire rope of the winch 3 is pulled to both ends and connected with the fixed plates 202 at both ends of the sliding truss 2. The telescopic function of the truss can be realized by operating the rope output direction of the winch 3 and pulling the sliding truss 2 with the wire rope.
[0034] See also Figure 1 、 Figure 2 and Figure 3 This embodiment provides a technical solution: a telescopic truss structure suitable for a bridge inspection vehicle, including a main truss 1, an upper guide wheel 101 and a lower guide wheel 102:
[0035] An upper guide wheel 101 is provided inside the main truss 1, which is composed of a guide wheel, a bearing and a pin, and is installed on the inner chord of the main truss 1 through bolts and nuts. The upper guide wheel 101 is flat-bottomed and abuts against the top of the sliding truss 2, which can make the sliding truss 2 more stable when sliding inside the main truss 1. The lower guide wheel 102 is V-shaped, which is composed of a guide wheel, a bearing and a pin, and is installed on the inner chord of the main truss 1 through bolts and nuts. The guide track 201 is provided with two tracks composed of round steel and equilateral angle steel. The guide track 201 and the V-shaped lower guide wheel 102 at the bottom of the main truss 1 are interlocked with each other, so that the sliding truss 2 can be ensured not to derail when sliding inside the main truss 1.
[0036] See also Figure 1 、 Figure 4 and Figure 5 This embodiment provides a technical solution: a telescopic truss structure suitable for a bridge inspection vehicle, including a main truss 1, a sliding truss 2, and a winch 3:
[0037] The winch 3 is arranged at the center position of the lower structure of the main truss 1. The steel wire rope of the winch 3 is pulled to both ends respectively, bypasses the guide pulley 103 of the main truss 1, and is fixed on the fixed plate 202 of the sliding truss 2. The sliding truss 2 can be pulled with the steel wire rope by operating the rope output direction of the winch 3 to control the sliding displacement of the sliding truss 2 in the main truss 1. The guide pulley 103 is composed of a guide wheel, a bearing and a pin shaft, and is installed on the inner chord rods at both ends of the main truss 1 through bolts and nuts. The guide pulley 103 is in contact with the steel wire rope pulled by the winch 3, which can play a guiding role for the steel wire rope. There are two fixed plates 202, which are arranged at both ends of the sliding truss 2. The two fixed plates 202 are respectively connected to the steel wire rope pulled by the winch 3, and the sliding truss 2 can be driven to move by the traction of the steel wire rope.
[0038] Working principle: The guide rail 201 below the sliding truss 2 is engaged with the V-shaped lower guide wheel 102 below the main truss 1, and the sliding truss 2 can slide and move along the main truss 1. A winch 3 is arranged at the center of the lower structure of the main truss 1. The wire rope is passed from the front and rear sides of the winch 3 around the guide pulleys 103 at both ends of the main truss 1 and pulled to the fixed plates 202 at both ends of the sliding truss 2. By operating the rope output direction of the winch 3, the sliding truss 2 is pulled with the wire rope to realize the telescopic function of the truss. With the above structure, the winch 3 is used to replace the reducer, and there is no need for gear racks, which saves the processing cost of the rack and the purchase cost of the reducer; the installation, operation and maintenance process of the winch 3 is also simpler, which saves costs and improves efficiency from the perspectives of processing, installation, operation and maintenance.
[0039] 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 telescopic truss structure suitable for a bridge inspection vehicle, characterized in that: The invention comprises a main truss (1), wherein a lower guide wheel (102) is provided inside the main truss (1), and guide pulleys (103) are provided at both ends of the main truss (1); a sliding truss (2), wherein the sliding truss (2) is nested inside the main truss (1), and the sliding truss (2) has a guide rail (201) provided at the bottom of the sliding truss (2), and the guide rail (201) and the lower guide wheel (102) are engaged with each other to realize the movement of the sliding truss (2) relative to the main truss (1), and fixed plates (202) are provided at both ends of the sliding truss (2); a winch (3), wherein the winch (3) is provided inside the main truss (1), and the steel wire rope of the winch (3) is pulled to both ends and connected to the fixed plates (202) at both ends of the sliding truss (2), and the winch (3) controls the steel wire rope to be released to drive the sliding truss (2) to slide, thereby realizing the telescopic function of the truss.
2. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 1, characterized in that: The main truss (1) is composed of six main chords, a plurality of vertical webs, diagonal webs and cross braces, and the internal structure of the main truss (1) is composed of two layers.
3. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 1, characterized in that: The main truss (1) further comprises an upper guide wheel (101) arranged inside the main truss (1); the upper guide wheel (101) is flat-bottomed and abuts against the top of the sliding truss (2).
4. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 1, characterized in that: The lower guide wheel (102) is V-shaped, and the guide track (201) is provided with two tracks composed of round steel and equilateral angle steel. The guide track (201) and the V-shaped lower guide wheel (102) at the bottom inside the main truss (1) are interlocked.
5. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 2, characterized in that: The hoist (3) is arranged at the center of the lower structure of the main truss (1), and the steel wire rope of the hoist (3) is pulled to both ends, passes around the guide pulley (103) of the main truss (1), and is fixed on the fixed plate (202) of the sliding truss (2).
6. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 1, characterized in that: The guide pulley (103) is composed of a guide wheel, a bearing and a pin, and is installed on the inner chords at both ends of the main truss (1) through bolts and nuts. The guide pulley (103) is in contact with the steel wire rope pulled out by the winch (3).
7. The telescopic truss structure suitable for a bridge inspection vehicle according to claim 1, characterized in that: Two fixing plates (202) are provided, and the two fixing plates (202) are provided at both ends of the sliding truss (2). The two fixing plates (202) are respectively connected to the steel wire rope pulled out by the hoist (3).