CN111218889A - Beam bottom inspection vehicle capable of passing through bridge pier - Google Patents
Beam bottom inspection vehicle capable of passing through bridge pier Download PDFInfo
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- CN111218889A CN111218889A CN202010138814.7A CN202010138814A CN111218889A CN 111218889 A CN111218889 A CN 111218889A CN 202010138814 A CN202010138814 A CN 202010138814A CN 111218889 A CN111218889 A CN 111218889A
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- truss
- portal frame
- side truss
- inspection vehicle
- hinge point
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a beam bottom inspection vehicle capable of passing through a pier, which comprises a portal frame, and a middle truss and a side truss which are arranged on two sides of the portal frame, wherein the middle truss is connected with the portal frame through a pin shaft, the upper part of one end of the side truss is hinged on the portal frame through the pin shaft, the whole side truss can rotate around a hinged hinge point, the lower part of one end of the side truss is supported on the portal frame through a servo oil cylinder, the middle truss is obliquely pulled on the portal frame through a cable, and the other end of the side truss is obliquely pulled on the portal frame through an adjustable stroke cable. The invention well solves the problem of continuous work of the beam bottom inspection vehicle capable of passing through the pier, and greatly improves the inspection efficiency; meanwhile, the lifting trolley is reduced at the cantilever end, the load of the cantilever end is reduced, and the running safety of the whole vehicle is improved.
Description
Technical Field
The invention relates to the technical field of bridge inspection equipment, in particular to a bridge bottom inspection vehicle capable of passing through a bridge pier.
Background
The bridge inspection vehicle is a special device for bridge inspection, the existing under-bridge inspection vehicle is mainly in the form of a suspension type running inspection vehicle, and the under-bridge suspension type running inspection vehicle can be divided into two types of vehicles which can pass through bridge piers and can not pass through the bridge piers.
The two ends of a traditional under-bridge suspension type walking inspection vehicle capable of passing through a bridge pier are provided with lifting trolleys so as to comprehensively inspect the bridge inclined web plate. When the inspection vehicle moves along the direction of the bridge, the lifting trolley needs to be retracted, which brings much inconvenience to the continuous inspection work, and meanwhile, the lifting trolley is positioned at the cantilever ends at the two sides, so that the lifting trolley shakes greatly during the work, and the safety is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bridge bottom inspection vehicle capable of passing through a bridge pier, which can comprehensively inspect a bridge inclined web without a lifting trolley.
The invention provides a beam bottom inspection vehicle capable of passing through a pier, which comprises a portal frame, and a middle truss and a side truss which are arranged on two sides of the portal frame, wherein the middle truss is connected with the portal frame through a pin shaft, the upper part of one end of the side truss is hinged on the portal frame through the pin shaft, the whole side truss can rotate around a hinged hinge point, the lower part of one end of the side truss is supported on the portal frame through a servo oil cylinder, the middle truss is obliquely pulled on the portal frame through a pull cable, and the other end of the side truss is obliquely pulled on the portal frame through an adjustable stroke pull cable.
According to an embodiment of the bridge bottom inspection vehicle capable of passing through a bridge pier, the bridge bottom inspection vehicle further comprises a driving system arranged on the portal frame, and the bridge bottom inspection vehicle is suspended on the bridge bottom rail through the driving system.
According to one embodiment of the bridge bottom inspection vehicle capable of passing through the bridge pier, the adjustable stroke stay comprises a hydraulic oil cylinder and a pull rod, and the hydraulic oil cylinder is connected with the pull rod in a hinged mode; and a pull rope is also arranged between the portal frame and the middle part of the side truss.
According to an embodiment of the bridge bottom inspection vehicle capable of passing through a bridge pier of the present invention, each of the middle truss and the side trusses includes an upper chord, a lower chord, and diagonal web members and straight web members disposed between the upper chord and the lower chord.
According to one embodiment of the beam bottom inspection vehicle capable of passing through the bridge pier, the portal frame comprises an upper tower cap and a lower connecting frame, the upper portion and the lower portion of the connecting frame are respectively provided with an upper hinge point and a lower hinge point, the lower hinge point comprises a first lower hinge point connected with the lower chord of the middle truss and a second lower hinge point connected with the lower chord of the side truss through the following oil cylinders, and the following oil cylinders are respectively fixed between the second lower hinge point of the portal frame and the lower chord of the side truss through pin shafts.
According to one embodiment of the beam bottom inspection vehicle capable of passing through the bridge pier, an upper chord and a lower chord of the middle truss are fixed on an upper hinge point and a lower hinge point of a portal frame through hinge pins respectively, an upper chord at one end of the side truss is fixed on the upper hinge point of the portal frame through the hinge pins and can rotate around the upper hinge point of the portal frame, and a lower chord at one end of the side truss is supported on the lower hinge point of the portal frame through a servo oil cylinder.
According to one embodiment of the beam bottom inspection vehicle capable of passing through the pier, when the hydraulic oil cylinder is straightened to the maximum stroke, the side truss rotates to the horizontal state, the portal frame, the side truss and the servo oil cylinder jointly form a side truss locking mechanism, the servo oil cylinder hydraulic valve locks and maintains pressure and realizes the locking of the horizontal state position of the side truss of the inspection vehicle, at the moment, the inhaul cable and the adjustable stroke inhaul cable simultaneously bear and pull up the side truss, and the truss of the beam bottom inspection vehicle is integrally in a straight shape and can pass through the pier.
According to one embodiment of the beam bottom inspection vehicle capable of passing through the pier, when the hydraulic oil cylinder contracts to the minimum stroke, the side truss rotates to be parallel to the beam bottom oblique web, the portal frame, the side truss and the servo oil cylinder jointly form a side truss locking mechanism, the hydraulic valve of the servo oil cylinder locks and maintains pressure again to achieve position locking of the working state of the side truss of the inspection vehicle, at the moment, the side truss is lifted only by the adjustable stroke stay cable in a bearing mode, and the beam bottom inspection vehicle can inspect the beam bottom oblique web.
The invention well solves the problem of continuous work of the beam bottom inspection vehicle capable of passing through the pier, and greatly improves the inspection efficiency; meanwhile, the lifting trolley is reduced at the cantilever end, the load of the cantilever end is reduced, and the running safety of the whole vehicle is improved.
Drawings
Fig. 1 is a schematic view illustrating an overall structure of a bridge bottom inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic view showing a structure of a girder bottom inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention when a side truss is lifted.
Fig. 3A is a schematic front view illustrating a coupling part of a gantry in a bridge floor inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention, and fig. 3B is a schematic partial top view illustrating a coupling part of a gantry in a bridge floor inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention.
Fig. 4A is a front view illustrating a structural view of an adjustable travel cable in a bridge bottom inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention, and fig. 4B is a top view illustrating a structural view of an adjustable travel cable in a bridge bottom inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention.
Description of reference numerals:
1-middle truss, 2-portal frame, 2-1-tower cap, 2-2-upper hinge point, 2-3-first lower hinge point, 2-4-second lower hinge point, 3-follow-up oil cylinder, 4-pin shaft, 5-pull cable, 6-adjustable travel pull cable, 6-1-hydraulic oil cylinder, 6-2-pull rod, 7-side truss, 7-1-upper chord of side truss, 7-2-lower chord of side truss, and 8-driving system.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Fig. 1 is a schematic view illustrating an overall structure of a girder inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention, and fig. 2 is a schematic view illustrating a structure of the girder inspection vehicle capable of passing through a pier when a side truss is lifted according to an exemplary embodiment of the present invention.
As shown in fig. 1 and 2, according to an exemplary embodiment of the present invention, the beam bottom inspection vehicle includes a portal frame 2, and a middle truss 1 and a side truss 7 disposed at both sides of the portal frame 2, the middle truss 1 is connected to the portal frame 2 through a pin 4, an upper portion of one end of the side truss 7 is hinged to the portal frame 2 through the pin 4, and the whole side truss 7 can rotate around a hinged hinge point, a lower portion of one end of the side truss 7 is supported to the portal frame 2 through a follower cylinder 3, the middle truss 1 is stayed on the portal frame 2 through a cable 5, and the other end of the side truss 7 is stayed on the portal frame 2 through an adjustable stroke cable 6.
From this, portal frame 2, side truss 7 and adjustable stroke cable 6 constitute the side truss hoist mechanism of inspection car jointly, can realize that the side truss lifts up and the side truss when crossing the mound when inspection car during operation is flat effect. The portal frame 2, the side truss 7 and the follow-up oil cylinder 3 jointly form a side truss locking mechanism, and the follow-up oil cylinder can lock the horizontal state position or the working state position of the side truss to be checked.
And the connecting structures among the middle truss 1, the side truss 7 and the portal frame 2 are all connected by pin shafts, so that the structural form simplifies the connecting mode of the truss and the portal frame, reduces the weight of the inspection vehicle, and simultaneously helps the truss to bear by stay cables, thereby avoiding the problem of large stress concentration caused by a cantilever type truss structure.
The beam bottom inspection vehicle further comprises a driving system 8 for driving the inspection vehicle to run, the driving system 8 is arranged on the portal frame, and the beam bottom inspection vehicle is suspended on the beam bottom rail through the driving system.
Fig. 4A is a front view illustrating a structural view of an adjustable travel cable in a bridge bottom inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention, and fig. 4B is a top view illustrating a structural view of an adjustable travel cable in a bridge bottom inspection vehicle capable of passing through a pier according to an exemplary embodiment of the present invention.
As shown in figures 4A and 4B, according to the invention, the adjustable stroke stay 6 comprises a hydraulic oil cylinder 6-1 and a pull rod 6-2, wherein the hydraulic oil cylinder 6-1 is connected with the pull rod 6-2 in a hinged manner, and the length of the adjustable stroke stay is changed by stretching and retracting the oil cylinder. And the middle parts of the portal frame 2 and the side truss 6 are also provided with a guy cable 5 so as to form a cable-stayed balance structure and play a role in bearing and pulling in a specific state.
Fig. 3A is a schematic front view illustrating a coupling part of a gantry in a bridge floor inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention, and fig. 3B is a schematic partial top view illustrating a coupling part of a gantry in a bridge floor inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention.
As shown in fig. 3A and 3B, each of the middle truss 1 and the side trusses 7 of the present invention includes an upper chord, a lower chord, and diagonal web members and straight web members provided between the upper chord and the lower chord. The portal frame 2 comprises an upper tower cap 2-1 and a lower connecting frame, wherein the upper part of the connecting frame is provided with an upper hinge point 2-2, and the lower part of the connecting frame is provided with a first lower hinge point 2-3 and a second lower hinge point 2-4.
The upper chord member and the lower chord member of the middle truss 1 are respectively fixed on an upper hinge point and a lower hinge point of the portal frame through pin shafts, the upper chord member 7-1 at one end of the side truss 7 is fixed on the upper hinge point 2-2 of the portal frame 2 through a pin shaft 4, the side truss 7 can rotate around the upper hinge point 2-2 of the portal frame 2, and the other end of the side truss 7 is hinged with a tower cap 2-1 of the portal frame 2 through an adjustable stroke inhaul cable 6, so that the side truss lifting mechanism of the inspection vehicle is formed.
The follow-up oil cylinder 3 is respectively fixed on a second lower hinge point 2-4 of the portal frame and a lower chord 7-2 of the side truss through a pin shaft 4, the follow-up oil cylinder 3 can stretch or contract along with the rotation of the side truss 7, and the stroke of the oil cylinder is locked through a hydraulic valve, so that the locking mechanism of the side truss of the inspection vehicle is formed.
In the work, the side truss 7 can be controlled to rotate up and down around the hinge point 2-2 on the portal frame through the pin shaft 4 by controlling the extension and retraction of the hydraulic oil cylinder 6-1, and the appearance of the whole truss system of the inspection vehicle is adjusted, so that the requirements of the inspection vehicle on the work state and the pier passing state are met.
Specifically, when the hydraulic oil cylinder 6-1 is extended to the maximum stroke, the side truss 7 rotates to the horizontal state, the hydraulic valve of the follow-up oil cylinder 3 is locked for pressure maintaining, the portal frame 2, the side truss 7 and the follow-up oil cylinder 3 jointly form a side truss locking mechanism, the horizontal state position of the side truss of the inspection vehicle is locked, and at the moment, the stay cable 5 and the adjustable stroke stay cable 6 simultaneously bear and pull up the side truss 7, and the vehicle for inspecting the bottom of the beam can pass through a pier.
When the hydraulic oil cylinder 6-1 contracts to the minimum stroke, the side truss 7 rotates to a state parallel to the beam bottom oblique web, the servo oil cylinder hydraulic 3 pressure valve locks and maintains pressure again, the portal frame 2, the side truss 7 and the servo oil cylinder 3 jointly form a side truss locking mechanism, the working state position of the side truss of the inspection vehicle is locked, at the moment, the side truss 7 is lifted only under the load of the stroke-adjustable inhaul cable 6, and the beam bottom inspection vehicle can inspect the beam bottom oblique web.
In conclusion, the girder bottom inspection vehicle capable of passing through the pier is provided with a set of side truss lifting mechanism by the oil cylinder telescopic principle, so that three problems of the girder bottom inspection vehicle capable of passing through the pier are solved:
(1) the lifting trolley is omitted from the end part of the side truss, so that the load of the side truss is reduced, the light-weight design of the inspection trolley is facilitated, and the problem of large work shaking of the conventional lifting trolley is solved;
(2) the inspection of the whole inclined web working surface can be met by contracting the oil cylinder and lifting the side truss, so that the safety of high-altitude operation is further improved;
(3) the inspection vehicle can continuously work when moving along the bridge direction, and the efficiency of inspection work is improved.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. The utility model provides a beam bottom inspection car that can cross pier, its characterized in that, beam bottom inspection car includes the portal frame and sets up middle truss and the side truss in the portal frame both sides, middle truss is connected with the portal frame through the round pin axle, the one end upper portion of side truss articulates on the portal frame and the side truss is whole can rotate around articulated hinge point through the round pin axle, the one end lower part of side truss passes through servo cylinder and supports on the portal frame, middle truss passes through the cable and draws on the portal frame to one side, the other end of side truss draws on the portal frame to one side through adjustable stroke cable.
2. The bridge floor inspection vehicle capable of passing through a bridge pier of claim 1, further comprising a drive system provided on the gantry, wherein the bridge floor inspection vehicle is suspended on the bridge floor rail by the drive system.
3. The bottom beam inspection vehicle capable of passing through the pier according to claim 1, wherein the adjustable stroke cable comprises a hydraulic oil cylinder and a pull rod, the hydraulic oil cylinder is connected with the pull rod in a hinged mode, and a cable is further arranged between the portal frame and the middle part of the side truss.
4. The bridge bottom inspection vehicle capable of passing through a bridge pier of claim 3, wherein the middle truss and the side trusses each comprise an upper chord, a lower chord, and diagonal and straight webs disposed between the upper chord and the lower chord.
5. The bottom beam inspection vehicle capable of passing through a pier according to claim 4, wherein the portal frame comprises an upper tower cap and a lower connecting frame, the upper part and the lower part of the connecting frame are respectively provided with an upper hinge point and a lower hinge point, the lower hinge points comprise a first lower hinge point connected with the lower chord of the middle truss and a second lower hinge point connected with the lower chord of the side truss through a servo oil cylinder, and the servo oil cylinders are respectively fixed between the second lower hinge point of the portal frame and the lower chord of the side truss through pin shafts.
6. The bottom sill inspection trolley capable of passing through a pier according to claim 5, wherein the upper chord member and the lower chord member of the middle truss are fixed to an upper hinge point and a lower hinge point of the portal frame by pins, respectively, the upper chord member at one end of the side truss is fixed to the upper hinge point of the portal frame by a pin and the side truss can rotate around the upper hinge point of the portal frame, and the lower chord member at one end of the side truss is supported to the lower hinge point of the portal frame by a slave cylinder.
7. The bottom beam inspection vehicle capable of passing through a pier according to claim 6, wherein when the hydraulic cylinder is extended to the maximum stroke, the side truss rotates to the horizontal state, the portal frame, the side truss and the slave cylinder jointly form a side truss locking mechanism, the slave cylinder hydraulic valve locks and maintains pressure and realizes position locking of the horizontal state of the side truss of the inspection vehicle, the pull cable and the adjustable stroke pull cable simultaneously bear and pull the side truss, and the truss of the bottom beam inspection vehicle is in a straight shape and can pass through the pier.
8. The pier-passable bottom inspection vehicle according to claim 6, wherein when the hydraulic cylinder is contracted to a minimum stroke, the side truss rotates to a state parallel to the bottom oblique web, the portal frame, the side truss and the slave cylinder together form a side truss locking mechanism, the slave cylinder hydraulic valve locks and maintains the pressure again to lock the working state position of the side truss of the inspection vehicle, the side truss is lifted only by the adjustable stroke cable, and the bottom inspection vehicle can inspect the bottom oblique web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010138814.7A CN111218889A (en) | 2020-03-03 | 2020-03-03 | Beam bottom inspection vehicle capable of passing through bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010138814.7A CN111218889A (en) | 2020-03-03 | 2020-03-03 | Beam bottom inspection vehicle capable of passing through bridge pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111218889A true CN111218889A (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010138814.7A Pending CN111218889A (en) | 2020-03-03 | 2020-03-03 | Beam bottom inspection vehicle capable of passing through bridge pier |
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| Country | Link |
|---|---|
| CN (1) | CN111218889A (en) |
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2020
- 2020-03-03 CN CN202010138814.7A patent/CN111218889A/en active Pending
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Effective date of registration: 20210324 Address after: 611430 Xinjin Industrial Park, Xinjin County, Chengdu City, Sichuan Province Applicant after: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. Applicant after: Chengdu Xinzhu Transportation Technology Co., Ltd Address before: 611430 Xinjin Industrial Park, Xinjin County, Chengdu City, Sichuan Province Applicant before: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. |
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