A beam bottom inspection vehicle capable of passing bridge piers

Abstract

The present invention discloses a beam bottom inspection vehicle that can pass through bridge piers, the beam bottom inspection vehicle comprises a gantry and an intermediate truss and a side truss arranged on both sides of the gantry, the intermediate truss is connected to the gantry through a pin shaft, the upper part of one end of the side truss is hinged to the gantry through a pin shaft and the side truss as a whole can rotate around the hinge point of the hinge, the lower part of one end of the side truss is supported on the gantry through a follower cylinder, the intermediate truss is inclined on the gantry through a cable, and the other end of the side truss is inclined on the gantry through an adjustable stroke cable. The present invention solves the problem of continuous operation of the beam bottom inspection vehicle that can pass through piers well, and also greatly improves the inspection efficiency; at the same time, the cantilever end reduces the lifting trolley, reduces the load on the cantilever end, and improves the safety of the whole vehicle operation.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge inspection equipment, and more particularly to a beam bottom inspection vehicle capable of passing through bridge piers. Background Art

[0002] The bridge inspection vehicle is a special equipment for bridge inspection. The existing under-bridge inspection vehicles are mainly in the form of suspended traveling inspection vehicles. The under-bridge suspended traveling inspection vehicles can be divided into two categories: those that can pass over bridge piers and those that cannot pass over bridge piers.

[0003] Traditional under-bridge suspended traveling inspection vehicles that can pass through bridge piers must be equipped with lifting trolleys at both ends to fully inspect the bridge's inclined web. When the inspection vehicle moves along the bridge, the lifting trolley must be retracted, which brings a lot of inconvenience to the continuous inspection work. At the same time, the lifting trolley is located at the cantilever ends on both sides, and it shakes a lot when working on it, and the safety is also poor. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention proposes a beam bottom inspection vehicle that can pass through bridge piers and can comprehensively inspect the inclined web of a bridge without being equipped with a lifting trolley.

[0005] The present invention provides a beam bottom inspection vehicle that can pass through bridge piers. The beam bottom inspection vehicle includes a gantry and an intermediate truss and a side truss arranged on both sides of the gantry. The intermediate truss is connected to the gantry through a pin shaft, the upper part of one end of the side truss is hinged to the gantry through a pin shaft and the side truss as a whole can rotate around the hinge point, the lower part of one end of the side truss is supported on the gantry through a follower cylinder, the intermediate truss is obliquely pulled on the gantry through a cable, and the other end of the side truss is obliquely pulled on the gantry through an adjustable stroke cable.

[0006] According to an embodiment of the beam bottom inspection vehicle capable of passing through bridge piers of the present invention, the beam bottom inspection vehicle further comprises a driving system arranged on the gantry, and the beam bottom inspection vehicle is suspended on the beam bottom track through the driving system.

[0007] According to an embodiment of the beam bottom inspection vehicle capable of passing through bridge piers of the present invention, the adjustable stroke cable comprises a hydraulic cylinder and a pull rod, and the hydraulic cylinder and the pull rod are connected by a hinged manner; a cable is also arranged between the gantry and the middle part of the side truss.

[0008] According to an embodiment of the beam bottom inspection vehicle capable of passing through bridge piers of the present invention, the middle truss and the side truss each include an upper chord, a lower chord, and a diagonal web member and a straight web member arranged between the upper chord and the lower chord.

[0009] According to an embodiment of the beam bottom inspection vehicle that can pass through bridge piers of the present invention, the gantry includes an upper tower cap and a lower connecting frame, the upper and lower portions of the connecting frame are respectively provided with upper hinges and lower hinges, the lower hinges include a first lower hinge connected to a lower chord of an intermediate truss and a second lower hinge connected to a lower chord of a side truss via a follower cylinder, the follower cylinders are respectively fixed between the second lower hinge of the gantry and the lower chord of the side truss via pins.

[0010] According to an embodiment of the beam bottom inspection vehicle capable of passing through bridge piers of the present invention, the upper chord and the lower chord of the middle truss are respectively fixed to the upper hinge point and the lower hinge point of the gantry through pins, the upper chord at one end of the side truss is fixed to the upper hinge point of the gantry through a pin and the side truss can rotate around the upper hinge point of the gantry, and the lower chord at one end of the side truss is supported on the lower hinge point of the gantry through a follower cylinder.

[0011] According to an embodiment of the beam bottom inspection vehicle that can pass through bridge piers of the present invention, when the hydraulic cylinder is extended to the maximum stroke, the side truss rotates to a horizontal state, the gantry, the side truss and the follower cylinder together constitute a side truss locking mechanism, the follower cylinder hydraulic valve locks to maintain pressure and realizes the horizontal position locking of the side truss of the inspection vehicle, at this time, the cable and the adjustable stroke cable simultaneously carry and pull up the side truss, and the truss of the beam bottom inspection vehicle is in a straight line as a whole and can pass through bridge piers.

[0012] According to an embodiment of the beam bottom inspection vehicle that can pass through bridge piers of the present invention, when the hydraulic cylinder contracts to the minimum stroke, the side truss rotates to a state parallel to the inclined web of the beam bottom, and the gantry, side truss and follower cylinder together constitute a side truss locking mechanism. The follower cylinder hydraulic valve locks again to maintain pressure to achieve working state position locking of the side truss of the inspection vehicle. At this time, the side truss is only supported by the adjustable stroke cable to pull up the side truss, and the beam bottom inspection vehicle can perform beam bottom inclined web inspection.

[0013] The present invention solves the problem of continuous operation of the beam bottom inspection vehicle that can pass through piers and greatly improves the inspection efficiency; at the same time, the cantilever end reduces the lifting trolley, reduces the load on the cantilever end, and improves the safety of the whole vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the overall structure of a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown.

[0015] Figure 2 A schematic structural diagram of a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown when the side trusses are raised.

[0016] Figure 3A It shows a schematic diagram of the main structure of the gantry connection part in the beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention, Figure 3B A partial top view structural schematic diagram of a gantry connection portion in a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown.

[0017] Figure 4A It shows a schematic diagram of the main structure of an adjustable travel cable in a beam bottom inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention, Figure 4B A schematic diagram of the structure of an adjustable travel cable in a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown in a top view.

[0018] Description of reference numerals:

[0019] 1-middle truss, 2-gantry, 2-1-tower cap, 2-2-upper hinge point, 2-3-first lower hinge point, 2-4-second lower hinge point, 3-follow-up cylinder, 4-pin shaft, 5-cable, 6-adjustable stroke cable, 6-1-hydraulic cylinder, 6-2-pull rod, 7-side truss, 7-1-upper chord of side truss, 7-2-lower chord of side truss, 8-drive system. DETAILED DESCRIPTION

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0022] Figure 1 The overall structural schematic diagram of a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown. Figure 2 A schematic structural diagram of a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown when the side trusses are raised.

[0023] like Figure 1 and Figure 2 As shown, according to an exemplary embodiment of the present invention, the bottom beam inspection vehicle includes a gantry 2 and an intermediate truss 1 and a side truss 7 arranged on both sides of the gantry 2, the intermediate truss 1 is connected to the gantry 2 through a pin 4, the upper part of one end of the side truss 7 is hinged to the gantry 2 through the pin 4 and the side truss 7 as a whole can rotate around the hinge point, the lower part of one end of the side truss 7 is supported on the gantry 2 through a follower cylinder 3, the intermediate truss 1 is obliquely pulled on the gantry 2 through a cable 5, and the other end of the side truss 7 is obliquely pulled on the gantry 2 through an adjustable stroke cable 6.

[0024] Thus, the gantry 2, the side truss 7 and the adjustable travel cable 6 together constitute the side truss lifting mechanism of the inspection vehicle, which can achieve the effect of lifting the side truss when the inspection vehicle is working and laying it flat when passing the pier. The gantry 2, the side truss 7 and the follower cylinder 3 together constitute the side truss locking mechanism, and the follower cylinder can achieve the locking of the horizontal state position or working state position of the side truss of the inspection vehicle.

[0025] In addition, the connection structures between the middle truss 1, the side truss 7 and the gantry 2 are all connected by pins. This structural form simplifies the connection method between the truss and the gantry, reduces the weight of the inspection vehicle, and at the same time helps the truss to bear the load through the inclined cable, avoiding the large stress concentration problem caused by the cantilever truss structure.

[0026] The beam bottom inspection vehicle of the present invention further comprises a driving system 8 for driving the inspection vehicle to move. The driving system 8 is arranged on the gantry and the beam bottom inspection vehicle is suspended on the beam bottom track through the driving system.

[0027] Figure 4A It shows a schematic diagram of the main structure of an adjustable travel cable in a beam bottom inspection vehicle capable of passing through a bridge pier according to an exemplary embodiment of the present invention, Figure 4B A schematic diagram of the structure of an adjustable travel cable in a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown in a top view.

[0028] like Figure 4A and Figure 4B As shown, according to the present invention, the adjustable travel cable 6 includes a hydraulic cylinder 6-1 and a pull rod 6-2, the hydraulic cylinder 6-1 and the pull rod 6-2 are connected in a hinged manner, and the length of the adjustable travel cable is changed by the extension and contraction of the cylinder. In addition, a cable 5 is also provided in the middle of the gantry 2 and the side truss 6 to form an oblique-stayed balance structure and play a role in bearing and pulling under a specific state.

[0029] Figure 3A It shows a schematic diagram of the main structure of the gantry connection part in the beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention, Figure 3B A partial top view structural schematic diagram of a gantry connection portion in a beam bottom inspection vehicle capable of passing through bridge piers according to an exemplary embodiment of the present invention is shown.

[0030] like Figure 3A and Figure 3B As shown, the intermediate truss 1 and the side truss 7 of the present invention both include an upper chord, a lower chord, and a diagonal web and a straight web arranged between the upper chord and the lower chord. The gantry 2 of the present invention includes an upper tower cap 2-1 and a lower connecting frame, wherein the upper portion of the connecting frame is provided with an upper hinge point 2-2 and the lower portion is provided with a first lower hinge point 2-3 and a second lower hinge point 2-4.

[0031] The upper chord and the lower chord of the middle truss 1 are respectively fixed to the upper hinge point and the lower hinge point of the gantry through the pin shaft, and the upper chord 7-1 at one end of the side truss 7 is fixed to the upper hinge point 2-2 of the gantry 2 through the pin shaft 4 and the side truss 7 can rotate around the upper hinge point 2-2 of the gantry 2. The other end of the side truss 7 is hinged to the tower cap 2-1 of the gantry 2 through the adjustable stroke cable 6, thereby forming the side truss lifting mechanism of the inspection vehicle.

[0032] The follower cylinder 3 is fixed to the second lower hinge point 2-4 of the gantry and the lower chord 7-2 of the side truss through the pin 4, and the follower cylinder 3 can be stretched or contracted with the rotation of the side truss 7, and the cylinder stroke is locked through the hydraulic valve, thereby forming a locking mechanism for the inspection vehicle side truss.

[0033] During operation, by controlling the extension and retraction of the hydraulic cylinder 6-1, the side truss 7 can be controlled to rotate up and down around the hinge 2-2 on the gantry through the pin shaft 4, and the shape of the entire truss system of the inspection vehicle can be adjusted to meet the needs of the inspection vehicle in both working and passing piers.

[0034] Specifically, when the hydraulic cylinder 6-1 is extended to its maximum stroke, the side truss 7 rotates to a horizontal state, the hydraulic valve of the follower cylinder 3 is locked to maintain pressure, and the gantry 2, side truss 7 and the follower cylinder 3 together constitute a side truss locking mechanism to achieve horizontal position locking of the side truss of the inspection vehicle. At this time, the cable 5 and the adjustable stroke cable 6 simultaneously carry and pull up the side truss 7 and the beam bottom inspection vehicle can pass through the bridge pier.

[0035] When the hydraulic cylinder 6-1 contracts to the minimum stroke, the side truss 7 rotates to a state parallel to the inclined web at the bottom of the beam, and the hydraulic valve of the follower cylinder 3 is locked again to maintain pressure. The gantry 2, side truss 7 and follower cylinder 3 together constitute a side truss locking mechanism to realize the working position locking of the side truss of the inspection vehicle. At this time, only the adjustable stroke cable 6 is used to pull up the side truss 7 and the beam bottom inspection vehicle can perform beam bottom inclined web inspection.

[0036] In summary, the beam bottom inspection vehicle capable of passing bridge piers of the present invention designs a set of side truss lifting mechanism through the cylinder telescopic principle to solve the three major problems of the beam bottom inspection vehicle capable of passing bridge piers:

[0037] (1) The lifting trolley is removed from the end of the side truss to reduce the load on the side truss, which is conducive to the lightweight design of the inspection vehicle and solves the problem of large working shaking on the lifting trolley in the past;

[0038] (2) The entire inclined web working surface can be inspected by retracting the cylinder and lifting the side truss, further improving the safety of aerial work;

[0039] (3) The inspection vehicle can work continuously when moving along the bridge, thereby improving the efficiency of the inspection work.

[0040] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A beam bottom inspection vehicle capable of passing through bridge piers, characterized in that: The beam bottom inspection vehicle comprises a gantry and an intermediate truss and a side truss arranged on both sides of the gantry, the intermediate truss is connected to the gantry through a pin shaft, the upper part of one end of the side truss is hinged to the gantry through a pin shaft and the side truss as a whole can rotate around the hinge point of the hinge, the lower part of one end of the side truss is supported on the gantry through a follower cylinder, the intermediate truss is obliquely pulled on the gantry through a cable, and the other end of the side truss is obliquely pulled on the gantry through an adjustable stroke cable; The beam bottom inspection vehicle further comprises a driving system arranged on the gantry, and the beam bottom inspection vehicle is suspended on the beam bottom track through the driving system; The adjustable travel cable comprises a hydraulic cylinder and a pull rod, the hydraulic cylinder and the pull rod are connected in a hinged manner, and a cable is also provided between the gantry and the middle part of the side truss; The middle truss and the side truss each include an upper chord, a lower chord, and a diagonal web and a straight web arranged between the upper chord and the lower chord; The gantry includes an upper tower cap and a lower connecting frame, the upper and lower parts of the connecting frame are respectively provided with an upper hinge point and a lower hinge point, the lower hinge point includes a first lower hinge point connected to the lower chord of the middle truss and a second lower hinge point connected to the lower chord of the side truss through a follower cylinder, and the follower cylinder is respectively fixed between the second lower hinge point of the gantry and the lower chord of the side truss through a pin shaft; The upper chord and the lower chord of the middle truss are respectively fixed to the upper hinge point and the lower hinge point of the gantry through pins, the upper chord at one end of the side truss is fixed to the upper hinge point of the gantry through a pin and the side truss can rotate around the upper hinge point of the gantry, and the lower chord at one end of the side truss is supported on the lower hinge point of the gantry through a follower cylinder.

2. The beam bottom inspection vehicle capable of passing through bridge piers according to claim 1 is characterized in that: When the hydraulic cylinder is extended to its maximum stroke, the side truss rotates to a horizontal state, and the gantry, side truss and follower cylinder together form a side truss locking mechanism. The follower cylinder hydraulic valve locks the pressure and realizes the horizontal position locking of the side truss of the inspection vehicle. At this time, the cable and the adjustable stroke cable simultaneously carry and pull up the side truss, and the truss of the bottom beam inspection vehicle is in a straight line as a whole and can pass through the bridge piers.

3. The beam bottom inspection vehicle capable of passing through bridge piers according to claim 1 is characterized in that: When the hydraulic cylinder contracts to the minimum stroke, the side truss rotates to a state parallel to the diagonal web at the bottom of the beam. The gantry, side truss and follower cylinder together form a side truss locking mechanism. The follower cylinder hydraulic valve locks again to maintain pressure to achieve working position locking of the side truss of the inspection vehicle. At this time, the side truss is pulled up only by the adjustable stroke cable, and the beam bottom inspection vehicle can perform beam bottom diagonal web inspection.

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