CN104343084B - The trackless lower edge inspection trolley of a kind of steel purlin bridge - Google Patents

Abstract

The invention relates to a trackless lower chord inspection vehicle for a steel truss bridge, which belongs to the field of bridge inspection vehicles. Bracket hook and walking boot hook, the two traveling mechanisms are symmetrically installed at both ends of the main frame top cross-bridge; The upper ends of the walking bracket and walking shoes of the upper walking mechanism are alternately connected to the corresponding T beams at the bottom of the steel truss girder through their respective hooks, and drive the driving gear of the walking driving mechanism to rotate, so that the walking shoes and the walking bracket are alternately opposite to the T beams at the bottom of the steel truss girder. This design does not need to lay a special running track for inspection vehicles, and uses the self-laying track T beam of the steel truss girder itself to realize the smooth and orderly walking of the inspection vehicle and the implementation of inspection and maintenance. It is widely applicable to various types of steel truss bridge structures.

Description

A trackless lower string inspection vehicle for steel truss bridges

technical field

The invention relates to a trackless lower chord inspection vehicle for a steel truss bridge, which belongs to the field of bridge inspection vehicles, and in particular relates to a steel truss girder bottom inspection vehicle.

Background technique

The lower string inspection vehicle is widely used in the preventive inspection and maintenance of large and medium-sized steel truss bridges, providing a safety guarantee for the inspection and maintenance of all aspects of bridge structures. At present, the bottom of the currently used steel truss bridges are paved with T-beam structures with equal intervals. The existing technical inspection work at the bottom of the steel truss bridges mainly uses a suspended walking inspection vehicle, and the corresponding running tracks or additional parts need to be installed on the bridge. At the bottom end, the lower chord inspection vehicle can only move along the fixed track or attachment laid at the bottom of the steel truss girder in the way of rolling or crawler chain transmission during the running process. For this kind of moving along the fixed track or attachment Inspection vehicle, when the maintenance distance of the steel truss girder bridge is large, a large number of rails or additional parts need to be installed, which results in high cost, and the installation of running rails or additional parts is difficult, labor-intensive, and costly. It takes a long time. Therefore, there is an urgent need to use the existing T-beam structure of the steel truss girder to develop an inspection vehicle for moving along the bottom of the steel truss girder along the bridge to the trackless, so as to reduce the operating cost and cancel the track installation.

Contents of the invention

The object of the present invention is to provide a trackless lower chord inspection vehicle for steel truss bridges. Using the self-laying track T beam of the steel truss girder itself, there is no need to lay a special running track for the inspection vehicle, and the inspection can be realized by alternately running the inspection vehicle's walking bracket and walking shoes. The car runs smoothly, and the inspection operation is carried out.

The present invention is a steel truss bridge trackless lower chord inspection vehicle, comprising a main vehicle frame, a running mechanism and a T-beam at the bottom of a steel truss girder. , the two walking mechanisms are symmetrically installed on the two ends of the main frame top horizontal bridge through the lower ends of the walking brackets; The driving gear of the mechanism is meshed; the upper ends of the walking brackets of the two walking mechanisms are respectively hooked or disengaged from the T-beam at the bottom of the steel truss beam through the hooks of the walking brackets; the upper ends of the walking shoes of the two walking mechanisms are respectively The shoe hook and the T-beam at the bottom of the steel truss girder are correspondingly hooked or disengaged; by separately controlling the hook of the walking bracket, the walking shoe hook and the corresponding T-beam at the bottom of the steel truss girder alternately, and driving the driving gear of the walking drive mechanism to rotate, drive The walking boots and the walking bracket move alternately step by step and one drive relative to the T-beam at the bottom of the steel truss girder, realizing the step-by-step and orderly movement of the inspection vehicle along the bridge direction, and implementing the inspection and maintenance work at the bottom of the steel truss girder.

Control the walking bracket hooks at both ends of the walking bracket to be hooked and fixed with the T beam, and the walking boots hook and the T beam are decoupled from the hook, and the walking driving mechanism rotates the driving gear through the motor to drive the bottom rack of the walking boots relative to the walking The bracket moves and walks.

Control the walking boot hooks at both ends of the walking boots to be fixed with the T-beam, disengage the walking bracket hooks of the walking bracket from the T-beam, and the driving mechanism rotates the driving gear through the motor to drive the walking bracket to be opposite to the frame of the owner of the inspection vehicle. The rack at the bottom of the walking boot moves for walking.

The walking driving mechanism is composed of a motor and a driving gear, and the output shaft of the motor is fixedly connected with the driving gear.

The walking support hook is connected with the hydraulic cylinder mechanism, and the rotation and folding of the walking support hook are controlled through the expansion and contraction of the hydraulic oil cylinder.

The walking boot hook is connected with the hydraulic cylinder mechanism, and the rotation and folding of the walking boot hook is controlled through the expansion and contraction of the hydraulic oil cylinder.

The present invention is designed to fix one side of the walking bracket and the walking shoes relative to the bridge, and the other side moves forward by driving the motor to drive the gear to rotate, and the walking bracket and the walking boots advance alternately, thereby realizing the advancement of the inspection vehicle; when the walking boots are required When it is fixed relative to the bridge, the hydraulic cylinder mechanism connected to the walking shoe hook shrinks, and the walking shoe hook rotates, so that the walking shoe hooks at both ends of the walking shoe hook the T beam to ensure that the walking shoe is fixed relative to the bridge. At this time, it is connected to the walking bracket The hydraulic cylinder mechanism connected with the hook is extended, the hook of the walking support is rotated, the walking support is separated from the T-beam, and the driving mechanism drives the gear transmission through the drive motor, so that the walking support moves forward on the walking boots. When the walking support needs to be fixed relative to the bridge, the hydraulic cylinder mechanism connected to the walking support hook shrinks, and the walking support hook rotates, so that the walking support hooks at both ends of the walking support hook the T beam, ensuring that the walking support is fixed relative to the bridge. When the hydraulic cylinder mechanism that is connected with the walking boot hook is extended, the walking boot hook rotates, the walking boot breaks away from the T beam, and the walking drive mechanism drives the gear transmission through the drive motor, so that the walking boot moves forward on the walking support.

The invention is a trackless bottom inspection car, which solves the problems of high difficulty in installing the running track or additional parts of the bottom inspection car, high labor intensity, and high operating cost, and drives the walking bracket and the walking boots to move alternately by driving the motor to drive the gear to rotate. , to realize the trackless movement of the inspection vehicle. When the inspection vehicle is not in use, the inspection vehicle and the bridge body can be fixed together by using the walking bracket hook and the walking shoe hook, which ensures the safety and stability of the entire inspection vehicle structure. The invention does not need to lay the special running track for the inspection vehicle, uses the self-laying track T-beam of the steel truss girder itself, through the innovative structural design of the inspection vehicle, and realizes the alternate advancement of the inspection vehicle’s walking bracket and walking shoes in the form of gear transmission, and realizes the inspection vehicle’s stability operation, the present invention has the characteristics of simple and reliable structure, low comprehensive cost and the like, and is widely applicable to various types of steel truss bridge structures.

Description of drawings

Fig. 1 is a schematic view of the present invention along the bridge to the front;

Figure 2 is a schematic side view of Figure 1;

Fig. 3 is a schematic diagram of the walking mechanism of the present invention;

Fig. 4 is a schematic diagram showing that the walking boot hooks at the two ends of the walking boots of the present invention are hooked to the T-beam, and the walking bracket carries the main frame to move and walk

Fig. 5 is a schematic diagram showing that the walking bracket hooks at both ends of the walking bracket of the present invention are hooked to the T-beam, and the walking boots move relative to the walking bracket.

detailed description

Now further illustrate how the present invention is implemented in conjunction with accompanying drawings:

A steel truss bridge trackless lower chord inspection vehicle of the present invention comprises a main vehicle frame H, a traveling mechanism Z and a T beam at the bottom of a steel truss girder, and each traveling mechanism Z includes a traveling support 1, a traveling driving mechanism 2, a traveling shoe 3, a walking The bracket hook 4 and the walking boot hook 5, and the two traveling mechanisms Z are symmetrically installed on the two ends of the main frame H top cross bridge through the lower end of the walking bracket 1 respectively; The walking bracket 1 is fixedly connected, and the rack 3-1 at the bottom of the walking boot 3 meshes with the driving gear 21 of the walking driving mechanism 2; The bottom T beam is correspondingly hooked or unhooked; the upper ends of the running shoes 3 of the two walking mechanisms Z are respectively hooked or unhooked with the T beam at the bottom of the steel truss girder through the running shoe hook 5; 4. The walking shoe hook 5 is alternately hooked to the corresponding T beam at the bottom of the steel truss beam, and drives the driving gear 21 of the walking driving mechanism 2 to rotate, driving the walking shoe 3 and the walking bracket 1 to alternately drive one step at a time relative to the T beam at the bottom of the steel truss beam In order to realize the step-by-step and orderly movement of the inspection vehicle along the bridge direction, the inspection and maintenance work at the bottom of the steel truss girder is carried out.

Control the walking bracket hook 4 at the two ends of the walking bracket 1 to be hooked and fixed with the T beam, and the walking boot 3 and the walking boot hook 5 are disengaged from the T beam, and the walking driving mechanism 2 rotates the driving gear 21 through the motor 22 to drive the walking The rack 3-1 at the bottom of the boot 3 moves and walks relative to the walking bracket 1.

Control the walking boots hook 5 at the two ends of the walking boots 3 to be fixed with the T beam, and the walking bracket hook 4 of the walking bracket 1 is disengaged from the T beam, and the walking drive mechanism 2 rotates the driving gear 21 through the motor 22 to drive the walking The support 1 carries the inspection car owner's vehicle frame to move and walk relative to the rack 3-1 at the bottom of the walking boot 3 .

The walking drive mechanism 2 is composed of a motor 22 and a drive gear 21, and the output shaft of the motor 22 is fixedly connected with the drive gear 21.

The walking support hook 4 is connected with the hydraulic cylinder mechanism A, and the rotation and folding of the walking support hook 4 is controlled through the expansion and contraction of the hydraulic oil cylinder.

The walking boot hook 5 is connected with the hydraulic cylinder mechanism B, and the rotation and folding of the walking boot hook 5 are controlled through the expansion and contraction of the hydraulic oil cylinder.

About the mobile advance of inspection vehicle of the present invention is as follows:

The present invention is designed to fix one side of the walking bracket 1 and the walking shoe 3 relative to the bridge, and the other side moves forward by driving the gear 21 through the drive motor 22, and the walking bracket 1 and the walking shoe 3 advance alternately, thereby realizing inspection of the vehicle. Advance; as shown in Figure 3, when the walking boots 3 are fixed relative to the bridge, the hydraulic cylinder mechanism B shrinks, and the walking boots hook 5 rotates, so that the walking boots hooks 5 at both ends of the walking boots 3 hook the T beam to ensure that the walking boots 3. It is fixed relative to the bridge. At this time, the hydraulic cylinder mechanism B is extended, the hook 4 of the walking bracket is rotated, the walking bracket 1 is separated from the T beam, and the driving mechanism 2 is driven by the drive motor 22 to drive the gear 21, so that the walking bracket 1 carries the frame of the owner for inspection. H moves and walks on the walking boot 3 .

As shown in Figure 4, when the walking support 1 is fixed relative to the bridge, the hydraulic cylinder mechanism B shrinks, and the walking support hook 4 rotates, so that the walking support hooks 4 at both ends of the walking support 1 hook the T beam, keeping the walking support 1 relative to the bridge. Fixed on the bridge, at this time, the hydraulic cylinder mechanism A is extended, the walking shoe hook 5 is rotated, the walking shoe 3 is separated from the T beam, and the walking driving mechanism 2 is driven by the drive motor 22 to drive the gear 21, so that the walking shoe 3 moves and walks on the walking support 1 .

Claims (6)

1. A steel truss bridge trackless type lower chord inspection car, comprising a main frame, a running gear and a T beam at the bottom of a steel truss girder, characterized in that each running gear includes a walking support, a walking drive mechanism, walking boots, and a walking support hook The two walking mechanisms are symmetrically installed on the two ends of the main frame top cross bridge through the lower end of the walking bracket respectively; The bars are meshed with the driving gear of the walking drive mechanism; the upper ends of the walking brackets of the two walking mechanisms are respectively hooked or disengaged from the T beam at the bottom of the steel truss beam through the hooks of the walking bracket; the walking boots of the two walking mechanisms The upper end is hooked or disengaged from the corresponding T-beam at the bottom of the steel truss girder through the hook of the walking shoe; the hook of the walking bracket and the hook of the walking shoe are alternately hooked with the corresponding T-beam at the bottom of the steel truss girder respectively, and the drive of the walking drive mechanism is driven. The gear rotates to drive the walking shoes and the walking bracket to move alternately one step at a time relative to the T-beam at the bottom of the steel truss girder, realizing the step-by-step and orderly movement of the inspection vehicle along the bridge direction, and implementing the inspection and maintenance work at the bottom of the steel truss girder. 2. A kind of steel truss bridge trackless type lower chord inspection car according to claim 1, it is characterized in that, the walking support hook of two ends of control described walking support is articulated and fixed with T beam, and the walking boots walking boots hook is connected with the T beam. The beam is detached from the hook, and the walking drive mechanism rotates the driving gear through the motor, driving the rack at the bottom of the walking boot to move relative to the walking bracket. 3. A kind of steel truss bridge trackless type lower chord inspection car according to claim 1, it is characterized in that, control the walking boot hook of two ends of described walking boot and T beam to hang and fix, the walking bracket hook of walking bracket is connected with T The beam is detached from the hook, and the walking drive mechanism rotates the driving gear through the motor, driving the walking bracket and the inspection vehicle owner's frame to move relative to the rack at the bottom of the walking boot. 4. A steel truss bridge trackless lower chord inspection vehicle according to claim 1, characterized in that the traveling drive mechanism is composed of a motor and a drive gear, and the output shaft of the motor is fixedly connected to the drive gear. 5. A trackless lower chord inspection vehicle for a steel truss bridge according to claim 1, characterized in that the traveling support hook is connected to the hydraulic cylinder mechanism, and the rotation and folding of the traveling support hook is controlled by the expansion and contraction of the hydraulic cylinder. 6 . The trackless lower chord inspection vehicle for a steel truss bridge according to claim 1 , wherein the walking shoe hook is connected to a hydraulic cylinder mechanism, and the rotation and folding of the walking shoe hook is controlled by the telescopic hydraulic cylinder.