Gauge-changeable suspension type inspection vehicle portal frame

Abstract

The utility model relates to the technical field of bridge inspection vehicles, aims to solve the problems that in the prior art, due to arrangement of tracks and portal frames, standardization of trusses is difficult, the efficiency of design, development and large-scale production of conventional beam bottom inspection vehicles is low, and manpower resources are wasted, and provides a suspension type inspection vehicle portal frame with a variable track gauge. Comprising an upper connecting seat, the upper connecting seat is used for being connected with a rotary support of a walking mechanism, the bottom of the upper connecting seat is connected with at least one pair of adjustable pull rods, the length of the adjustable pull rods can be adjusted and changed, and one ends of two of the pair of adjustable pull rods are hinged to the same point of the bottom of the upper connecting seat. The other ends of the two adjustable pull rods are hinged to the two ends of a fixing frame respectively, the fixing frame is used for being fixed to the top face of a truss, and the two ends of the fixing frame are fixed to truss nodes. According to the utility model, under the condition that the truss of the inspection vehicle is reasonably stressed and the portal frame is arranged at the node position of the truss, the installation and arrangement of the inspection vehicle at any gauge can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge inspection vehicles, in particular to a suspended inspection vehicle gantry with a variable track gauge. Background Art

[0002] At present, the inspection of the bottom of bridges is basically carried out by suspended bridge inspection vehicles. Conventional suspended bridge inspection vehicles are mainly composed of tracks, trusses, gantries, running mechanisms and other parts. Usually, the layout of the track is determined according to the position of the bridge's cross diaphragms or ribs. After the track position is determined, the inspection vehicle track gauge is determined. When the track gauge is determined, to ensure that the truss is properly stressed, the gantry must be arranged at the corresponding truss node. Therefore, the truss node spacing must be adjusted according to the track layout spacing of each bridge, resulting in the inability to achieve standardized production of the truss. The truss needs to be customized according to the track layout of each bridge, which greatly reduces the design, development and large-scale production efficiency of conventional beam bottom inspection vehicles and causes a waste of human resources. Utility Model Content

[0003] The utility model aims to provide a suspended inspection vehicle gantry with a variable track gauge, so as to solve the problems in the prior art of difficulty in truss standardization due to the arrangement of tracks and gantry, low efficiency in the design, development and large-scale production of conventional beam bottom inspection vehicles, and waste of human resources.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] The utility model provides a suspended inspection vehicle gantry with a variable track gauge, comprising an upper connecting seat, the upper connecting seat being used to be connected to a slewing support of a running mechanism, at least one pair of adjustable pull rods being connected to the bottom of the upper connecting seat, the lengths of the adjustable pull rods being adjustable, one end of two of the pair of adjustable pull rods being hinged at the same point at the bottom of the upper connecting seat, and the other ends of the two adjustable pull rods being hinged at two ends of a fixing frame respectively, the fixing frame being used to be fixed on the top surface of a truss, and the two ends of the fixing frame being fixed at the nodes of the truss.

[0006] As the preferred technical solution:

[0007] The fixing frame is connected to the truss through a fixing connector, and the fixing connector fixes both ends of the fixing frame at the truss nodes.

[0008] As the preferred technical solution:

[0009] The fixed connection piece adopts a connecting shoe or other fixed connection piece.

[0010] As the preferred technical solution:

[0011] A first hinge seat is respectively provided at both ends of the fixing frame, and the other end of the adjustable pull rod is hinged on the first hinge seat, and the position of the first hinge seat corresponds to the truss node.

[0012] As the preferred technical solution:

[0013] The upper connecting seat includes a connecting beam, and one end of the adjustable pull rod is hinged on the connecting beam.

[0014] As the preferred technical solution:

[0015] A second hinged seat is provided on the connecting crossbeam, and one end of two adjustable pull rods in a pair of adjustable pull rods is hinged on the second hinged seat.

[0016] As the preferred technical solution:

[0017] The upper connecting seat further includes a sliding connection member, and the sliding connection member includes a sliding shaft. The sliding shaft is arranged above the connecting crossbeam, and both ends of the sliding shaft are hinged to the connecting crossbeam.

[0018] As the preferred technical solution:

[0019] A third hinge seat is provided on both sides of the connecting beam, and both ends of the sliding shaft are hinged on the corresponding third hinge seats.

[0020] As the preferred technical solution:

[0021] The sliding connection also includes a sliding sleeve, which is sleeved on the sliding shaft and is used to be connected to the running mechanism rotary support connection. The sliding sleeve and the sliding shaft can slide relative to each other.

[0022] As the preferred technical solution:

[0023] Positioning devices are respectively provided at both ends of the sliding sleeve, and the positioning devices are used to limit the relative sliding between the sliding sleeve and the sliding shaft.

[0024] As the preferred technical solution:

[0025] The positioning device is a distance sleeve, and the distance sleeve is sleeved on the sliding shaft.

[0026] As the preferred technical solution:

[0027] One end of the distance sleeve abuts against the end of the sliding sleeve, and the other end of the distance sleeve abuts against the third hinge seat.

[0028] As the preferred technical solution:

[0029] A sliding sleeve is provided inside the sliding sleeve.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] The utility model relates to a gantry for a bridge inspection vehicle with a variable track gauge. The gantry is configured to adjust the length of two adjustable tie rods to change the position of the upper connecting seat, thereby changing the spacing between the upper connecting seats on both sides, thereby adapting to different track gauges. The utility model hinges the lower end of the adjustable tie rod to the end of the fixed frame, and the end of the fixed frame is fixedly connected to the truss node, ensuring that the truss of the inspection vehicle is properly stressed. Through the above structure, the utility model can achieve a standardized truss design, directly install the gantry at the standardized truss node, and then adjust the length of the adjustable tie rod to adapt to different track gauges. Therefore, the utility model solves the problem of the difficulty of truss standardization in the prior art due to the layout of the track and gantry, the low design and development efficiency and large-scale production efficiency of conventional beam bottom inspection vehicles, and the waste of human resources. The utility model can realize the installation and arrangement of the inspection vehicle at any track gauge while ensuring the proper stress of the inspection vehicle truss and the gantry is arranged at the truss node position, thus achieving a standardized truss design and improving the production efficiency of bridge inspection vehicles, which is of great significance to the standardized development of bridge inspection vehicles.

[0032] 2. The upper connecting seat of the utility model includes a sliding connecting piece. The sliding sleeve in the sliding connecting piece is connected to the slewing support connecting piece of the upper running mechanism, and is sleeved on the sliding shaft. The two ends of the sliding shaft are hinged to the connecting beam. The sliding sleeve can slide on the sliding shaft within a certain range. Through the above structure, a movable gantry is formed. Since the sliding shaft can slide a certain distance in the horizontal direction relative to the sliding sleeve, the horizontal movement freedom of the gantry is released. Therefore, it is ensured that the inspection vehicle can adapt to the gauge error and the left and right drive asynchronism during the walking process, and will not get stuck or stuck due to the gauge error.

[0033] 3. The utility model sets a distance sleeve at both ends of the sliding sleeve to limit the sliding sleeve, limit the relative displacement between the sliding shaft and the sliding sleeve in the lateral direction, and form a fixed gantry. In the design of the bridge inspection vehicle, the fixed gantry is used in conjunction with the movable gantry and installed together on the truss.

[0034] 4. The utility model can also adjust the height of the truss from the bottom of the beam by adjusting the length of the adjustable pull rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the movable gantry described in this embodiment.

[0036] Figure 2 Schematic diagram of the structure of the fixed gantry described in this embodiment.

[0037] Figure 3 This is a schematic diagram of the installation of the variable gauge suspended inspection vehicle gantry described in the present utility model.

[0038] Icons: 1- movable gantry, 2- fixed gantry, 3- upper connecting seat, 4- walking mechanism slewing support connector, 5- adjustable pull rod, 6- fixed frame, 7- truss, 8- fixed connector, 9- first articulated seat, 10- connecting beam, 11- second articulated seat, 12- sliding shaft, 13- third articulated seat, 14- sliding sleeve, 15- distance sleeve. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. 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.

[0040] Example 1

[0041] like Figure 1-Figure 3 As shown, this embodiment proposes a variable-gauge suspended inspection vehicle gantry, including an upper connecting seat 3, which is used to connect with the running mechanism slewing support. Specifically, the upper connecting seat 3 is connected to the running mechanism slewing support connecting member 4 by bolts, and the running mechanism slewing support connecting member 4 is connected to the running mechanism slewing support. Through the above structure, the vertical rotation freedom of the gantry can be released within a certain range, ensuring that the gantry can rotate within a certain range relative to the running mechanism slewing support, so that the inspection vehicle can adapt to a certain range of left and right drive asynchrony during travel.

[0042] At least one pair of adjustable pull rods 5 is connected to the bottom of the upper connecting seat 3, and the length of the adjustable pull rods 5 can be adjusted. One end of two of the adjustable pull rods 5 is hinged at the same point at the bottom of the upper connecting seat 3, and the other ends of the two adjustable pull rods 5 are respectively hinged to the two ends of the fixing frame 6, and the fixing frame 6 is tightly attached to the top surface of the truss 7. The fixing frame 6 is connected to the truss 7 through a fixed connector 8, and the fixed connector 8 fixes the two ends of the fixing frame 6 at the truss node.

[0043] With the above structure, by adjusting the length of the adjustable tie rod 5, the angle between the adjustable tie rod 5 and the top surface of the truss 7 can be changed, thereby changing the position of the upper connecting seat 3. The spacing between the upper connecting seats 3 on both sides is changed accordingly to adapt to different track gauges. Therefore, the utility model can ensure that the gantry is arranged at the truss node while achieving installation and deployment under any track gauge.

[0044] The adjustable pull rod 5 may be a hydraulic rod with automatic length adjustment and self-locking function, an active control electric cylinder, a connecting rod with the same length adjustment function, etc., to achieve real-time adjustment and locking of the track gauge.

[0045] Furthermore, both ends of the fixing frame 6 are respectively connected to a first hinge seat 9, and the other end of the adjustable pull rod 5 is hinged on the first hinge seat 9, and the position of the first hinge seat 9 corresponds to the truss node.

[0046] In this embodiment, two groups of adjustable pull rods 5 are connected to the bottom of the upper connecting seat 3, and the two groups of adjustable pull rods 5 are symmetrically arranged. The number of the adjustable pull rods 5 is preferably two groups, but is not limited to two groups.

[0047] In this embodiment, the fixing connector 8 is a semicircular connecting shoe. However, the fixing connector 8 is not limited to a connecting shoe; other connecting members may also be used as long as they can connect the fixing frame 6 to the truss 7. The fixing connection between the fixing frame 6 and the truss 7 is not limited to the fixing connector 8; other fixing connection methods can be used to achieve a reliable connection between the fixing frame 6 and the truss 7.

[0048] Furthermore, the upper connecting base 3 includes a connecting beam 10, each end of which is provided with a second hinged seat 11. The upper ends of the two sets of adjustable tie rods 5 are respectively hinged to the second hinged seats 11 at each end of the connecting beam 10. The fixed frame 6 is hingedly connected to the connecting beam 10 via the adjustable tie rods 5, which releases the horizontal rotational freedom of the inspection vehicle, allowing the inspection vehicle to adapt to the deflection and deformation of the truss 7 system under load.

[0049] The upper connecting seat 3 further includes a sliding connection member, which includes a sliding shaft 12. The sliding shaft 12 is arranged above the connecting beam 10, and both ends of the sliding shaft 12 are hinged to the connecting beam 10. Specifically, third hinge seats 13 are respectively provided on both sides of the connecting beam 10, and both ends of the sliding shaft 12 are hinged to the corresponding third hinge seats 13.

[0050] The sliding connection also includes a sliding sleeve 14, which is sleeved on the sliding shaft 12 and connected to the running mechanism rotary support connection member 4. The running mechanism rotary support connection member 4 is connected to the running mechanism rotary support. The sliding sleeve 14 and the sliding shaft 12 can slide relative to each other. One end of the sliding shaft 12 passes through the third hinge seat 13 on one side, the sliding sleeve 14, and the third hinge seat 13 on the other side. Limiting members are provided at both ends of the sliding shaft 12 to prevent the sliding shaft 12 from sliding out.

[0051] The sliding shaft 12 may be a pin shaft, one end of which is provided with a stopper, and the other end of which is inserted with a split pin or a snap ring for position limiting. The cross section of the sliding sleeve 14 may be circular, square or rectangular.

[0052] Since relative sliding can occur between the sliding sleeve 14 and the sliding shaft 12, the sliding shaft 12 can slide a certain distance in the horizontal direction relative to the sliding sleeve 14, releasing the horizontal movement freedom of the gantry, thereby ensuring that the inspection vehicle can adapt to the track gauge error and left and right drive asynchrony during the movement, and will not get stuck or jammed due to the track gauge error. The gantry with this structure is a movable gantry 1.

[0053] Opposite to the movable gantry 1 is a fixed gantry 2. The difference between the fixed gantry 2 and the movable gantry 1 is that in the fixed gantry 2, a distance sleeve 15 is provided at each end of the sliding sleeve 14. The distance sleeve 15 is also sleeved on the sliding shaft 12. One end of the distance sleeve 15 abuts against the end of the sliding sleeve 14, and the other end of the distance sleeve 15 abuts against the third hinge seat 13. The distance sleeve 15 limits the sliding sleeve 14 so that no lateral slippage occurs between the sliding shaft 12 and the sliding sleeve 14. To achieve this purpose, the use of the distance sleeve 15 is not limited to other limiting members that can limit the relative sliding between the sliding sleeve 14 and the sliding shaft 12, for example, by providing or connecting a limit block to the sliding sleeve 14.

[0054] like Figure 3As shown, when designing a bridge inspection vehicle, each inspection vehicle is usually equipped with a movable gantry 1 and a fixed gantry 2 on the top surface of the truss 7 to achieve suspended beam bottom inspection. The movable gantry 1 and the fixed gantry 2 are installed on the truss nodes and fixedly connected to the truss 7. The movable gantry 1 and the fixed gantry 2 are connected to the running mechanism through the running mechanism's rotary support. Since the sliding sleeves 14 of the movable gantry 1 are not equipped with fixed sleeves 15 at both ends, the movable gantry 1 can achieve a certain angle of rotation and a certain distance of lateral sliding, thereby ensuring that the running mechanism of the inspection vehicle can effectively adapt to a certain range of track gauge installation errors and left and right drive asynchrony during driving, and will not get stuck due to track gauge installation errors.

[0055] Furthermore, a sliding sleeve is provided inside the sliding sleeve 14 , and the sliding sleeve is a self-lubricating copper sleeve with a small friction coefficient, good wear resistance and a long service life.

[0056] Since the movable gantry 1 and the fixed gantry 2 in this embodiment both adjust the position of the upper connecting seat 3 by adjusting the length of the adjustable tie rod 5, the spacing between the upper connecting seats 3 on both sides changes, and thus the track gauge can be adjusted or adapted within a certain range. The truss 7 can be designed in a standardized manner, and the movable gantry 1 and the fixed gantry 2 are directly installed on the truss node. For the standardized truss 7 designed according to the standard spacing, when the gantry is arranged at the truss node and the inspection vehicle installation track gauge is determined, the track gauge can be adjusted within a certain range by adjusting the length of the parametrically designed adjustable tie rods 5 on both sides. This ensures that the gantry is arranged at the truss node while being able to adapt to the inspection vehicle track with any track gauge, avoiding the need to adjust the truss node position according to the track gauge each time and specially designing the truss 7. At the same time, the height of the truss 7 from the bottom of the beam can also be adjusted by adjusting the length of the adjustable tie rod 5.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A variable gauge suspended inspection vehicle gantry, characterized by: It includes an upper connecting seat, which is used to be connected to the slewing support of the running mechanism. At least one pair of adjustable pull rods is connected to the bottom of the upper connecting seat, and the length of the adjustable pull rods can be adjusted. One end of two adjustable pull rods in a pair of adjustable pull rods is hinged at the same point on the bottom of the upper connecting seat, and the other ends of the two adjustable pull rods are respectively hinged to the two ends of the fixing frame. The fixing frame is used to be fixed on the top surface of the truss, and the two ends of the fixing frame are fixed at the truss node.

2. The variable gauge suspended inspection vehicle gantry according to claim 1, characterized in that: The fixing frame is connected to the truss through a fixing connector, and the fixing connector fixes both ends of the fixing frame at the truss nodes.

3. The variable gauge suspended inspection vehicle gantry according to claim 1, characterized in that: A first hinge seat is respectively provided at both ends of the fixing frame, and the other end of the adjustable pull rod is hinged on the first hinge seat, and the position of the first hinge seat corresponds to the truss node.

4. The variable gauge suspended inspection vehicle gantry according to claim 1, characterized in that: The upper connecting seat includes a connecting beam, and one end of the adjustable pull rod is hinged on the connecting beam.

5. The variable gauge suspended inspection vehicle gantry according to claim 4, characterized in that: A second hinged seat is provided on the connecting crossbeam, and one end of two adjustable pull rods in a pair of adjustable pull rods is hinged on the second hinged seat.

6. The variable gauge suspended inspection vehicle gantry according to claim 4, characterized in that: The upper connecting seat further includes a sliding connection member, and the sliding connection member includes a sliding shaft. The sliding shaft is arranged above the connecting crossbeam, and both ends of the sliding shaft are hinged to the connecting crossbeam.

7. The variable gauge suspended inspection vehicle gantry according to claim 6, characterized in that: The sliding connection also includes a sliding sleeve, which is sleeved on the sliding shaft and is used to be connected to the running mechanism rotary support connection. The sliding sleeve and the sliding shaft can slide relative to each other.

8. The variable gauge suspended inspection vehicle gantry according to claim 7, characterized in that: Positioning devices are respectively provided at both ends of the sliding sleeve, and the positioning devices are used to limit the relative sliding between the sliding sleeve and the sliding shaft.

9. The variable gauge suspended inspection vehicle gantry according to claim 8, characterized in that: The positioning device is a distance sleeve, and the distance sleeve is sleeved on the sliding shaft.

10. The variable gauge suspended inspection vehicle gantry according to claim 8 or 9, characterized in that: A sliding sleeve is provided inside the sliding sleeve.

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