Self-leveling inspection vehicle suitable for large gradient

Abstract

The self-leveling inspection vehicle comprises a driving device hinged to a portal frame, the driving device comprises a cross beam, the front end and the rear end of the upper surface of the cross beam are each provided with a driving assembly, each driving assembly comprises an installation plate, and a reverse buckling device is connected between the installation plates on the two sides; the reverse buckling device comprises a positioning plate, the two ends of the positioning plate are connected with the mounting plates on the corresponding sides respectively, a guide column penetrates through the positioning plate, the tail end, extending out of the upper surface of the positioning plate, of the guide column is connected with a reverse buckling shaft, the guide column between the reverse buckling shaft and the positioning plate is sleeved with a spring, and a reverse buckling wheel is arranged on the outer side of the reverse buckling shaft. The top of the reverse buckle wheel abuts against the lower surface of the rail. By arranging the reverse buckling device, under the condition that the dead weight of the inspection vehicle is not increased, the wheel pressure of the driving wheel set is improved, and the climbing ability of the inspection vehicle is improved; by means of the eccentric gravity of the truss, the hydraulic oil cylinder can be pushed to stretch out and draw back without an external driving mechanism, and the truss rotates around a shaft to be leveled.

Description

Technical Field

[0001] The present invention relates to a self-leveling inspection vehicle, and particularly to a self-leveling inspection vehicle suitable for large slopes. Background Art

[0002] Steel box girder inspection vehicles are usually used for the inspection and maintenance of bridges and mainly move along the tracks at the bottom of the steel box girder. Since the bridge itself has a curvature, the tracks also have a certain slope. To adapt to tracks with large slopes, the inspection vehicle needs to have two functions: the ability to climb large slopes and the real-time leveling of the truss.

[0003] Currently, there are mainly two ways to increase the climbing ability of the driving mechanism of the inspection vehicle. One is to wrap a rubber layer on the driving wheels, and the other is to perform knurling on the outer tread surface of the driving wheels. The principle of both is to increase the friction coefficient between the wheels and the track tread surface. However, after long-term use, the rubber layer of the rubber-coated wheels is prone to aging, wear and shedding, and the knurled wheels are extremely likely to damage the track tread surface. The later maintenance cost is high and it affects the normal use of the inspection vehicle.

[0004] Currently, there are mainly two methods for the inspection vehicle to level the truss. One is to install mechanical devices such as screw jacks between the gantry and the driving mechanism, and the other is to install electro-hydraulic push rods between the gantry and the driving mechanism. Both of these methods require external driving mechanisms such as motors or pump stations, which further increase the self-weight and cost of the inspection vehicle. Summary of the Invention

[0005] Object of the Invention: The object of the present invention is to provide a self-leveling inspection vehicle suitable for large slopes, which improves the climbing ability of the inspection vehicle by increasing the wheel pressure of the driving wheel set; at the same time, it automatically adjusts the horizontal of the truss by relying on the eccentric gravity of the truss in the deflected state, reduces the manufacturing and maintenance costs of the inspection vehicle, and improves the operation stability of the equipment.

[0006] Technical Solution: The present invention includes a driving device hinged to the gantry. The driving device includes a cross beam. A set of driving components are respectively installed at the front and rear ends of the upper surface of the cross beam. The driving component includes a mounting plate. An anti-clamping device is connected between the two mounting plates on both sides. The anti-clamping device includes a positioning plate. The two ends of the positioning plate are respectively connected to the corresponding mounting plates on the side. A guiding column penetrates through the positioning plate. The end of the guiding column extending out of the upper surface of the positioning plate is connected to an anti-clamping shaft. A spring is sleeved on the guiding column between the anti-clamping shaft and the positioning plate. An anti-clamping wheel is arranged outside the anti-clamping shaft. The top of the anti-clamping wheel abuts against the lower surface of the track.

[0007] Hydraulic cylinders are connected to the head and tail ends of the cross beam and the gantry. The two groups of hydraulic cylinders are respectively hinged to the small ear seats at the head and tail ends of the cross beam and the head and tail ends of the gantry.

[0008] The oil inlets of the hydraulic cylinders are connected in series with each other, and the oil outlets are also connected in series with each other. Solenoid valves are equipped in each oil circuit to form a closed hydraulic oil circuit. When the slope at a certain position of the track begins to increase and exceeds the set value of the inclination sensor on the truss, the solenoid valve opens and the oil circuits communicate with each other. Relying on the eccentric gravity of the truss, the hydraulic oil inside the oil cylinder is pushed to flow, driving the slow telescoping of the hydraulic cylinder, and then gradually adjusting the attitude of the truss until it is horizontal. At this time, the internal oil pressures of the two hydraulic cylinders are the same, the solenoid valve closes, and the oil circuit is locked to keep the truss in a horizontal state.

[0009] A needle roller bearing is installed in the inner hole of the reverse buckle wheel. One side of the needle roller bearing is fixed by the shaft shoulder of the reverse buckle shaft, and the other side is fixed by a circlip, fixing the reverse buckle wheel at the middle position of the reverse buckle shaft.

[0010] The reverse buckle wheel is located between the springs on both sides.

[0011] The bottom of the guide post is fixed to the bottom of the positioning plate by bolts.

[0012] The cross beam and the mounting plate are hinged. After the pin shaft passes through the small ear plate at the end of the cross beam, the two ends are respectively hinged to the mounting plates on the corresponding sides.

[0013] A driving wheel set is fixed inside the mounting plate, and a motor is fixed outside the mounting plate. The motor is drivingly connected to the driving wheel set. The driving wheel set is hung on the track. Through the monitoring and feedback of the inclination sensor on the truss, relying on the eccentric gravity of the truss itself, without setting an external driving mechanism, the hydraulic cylinder can be pushed to expand and contract, realizing the rotation and leveling of the truss around the axis.

[0014] Guide devices are symmetrically arranged on both sides of the mounting plate, and the guide devices are welded and fixed at the head and tail ends of the mounting plate.

[0015] The lower surface of the cross beam is hinged to the gantry through a pin shaft. When the driving device is hung on the track, the truss can rotate around the axis, thereby adjusting the attitude of the truss.

[0016] Advantages: The present invention has the following advantages:

[0017] 1) By setting the reverse buckle device, without increasing the self-weight of the inspection vehicle, the wheel pressure of the driving wheel set is increased, the climbing ability of the inspection vehicle is increased, the operation stability is high, and the later maintenance cost is low;

[0018] 2) Through the monitoring and feedback of the inclination sensor on the truss, relying on the eccentric gravity of the truss itself, without setting an external driving mechanism, the hydraulic cylinder can be pushed to expand and contract, realizing the rotation and leveling of the truss around the axis, with a compact structure, simple control, and low cost. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 Schematic diagram of the driving device of the present invention;

[0021] Figure 3 Schematic diagram of the reverse buckle device of the present invention;

[0022] Figure 4 Layout diagram of the self-leveling inspection vehicle of the present invention. Detailed implementation manners

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] As shown in Figure 1 and Figure 4 The self-leveling inspection vehicle applicable to large slopes in this embodiment includes a gantry 1, a truss 2, a driving device 3 and a hydraulic cylinder 4. The driving device 3 is hinged to the top of the gantry 1. One end of the hydraulic cylinder 4 is connected to the driving device 3, and the other end is connected to the gantry 1.

[0025] As shown in Figure 2 The driving device 3 includes a cross beam 5, a mounting plate 6, a driving wheel set 7, a guiding device 8 and a reverse buckle device 9. The large ear plate in the middle of the lower surface of the cross beam 5 is hinged to the large ear seat in the middle of the gantry 1 through a pin shaft. When the driving device 3 is hung on the track, the truss 2 can rotate around the axis, thereby adjusting the attitude of the truss. Hydraulic cylinders 4 are connected to both the head and tail ends of the cross beam 5 and the gantry 1. The two groups of hydraulic cylinders 4 are respectively hinged to the small ear seats at the head and tail ends of the cross beam 5 and the head and tail ends of the gantry 1. The oil inlets of the two groups of hydraulic cylinders 4 are connected in series with each other, and the oil outlets are connected in series with each other, and solenoid valves are provided in each oil circuit to form a closed hydraulic oil circuit. When the slope at a certain position of the track starts to increase and exceeds the set value of the inclination sensor on the truss 2, the solenoid valve opens and the oil circuits communicate with each other. Relying on the eccentric gravity of the truss 2, the hydraulic oil inside the oil cylinder is pushed to flow, driving the hydraulic cylinder 4 to slowly extend and retract, and then gradually adjusting the attitude of the truss 2 until it is horizontal. At this time, the internal oil pressures of the two hydraulic cylinders 4 are the same, and the solenoid valve closes to lock the oil circuit, keeping the truss 2 in a horizontal state.

[0026] A set of driving components are respectively installed on the front and rear sides of the upper surface of the cross beam 5. The driving component includes a mounting plate 6. The cross beam 5 and the mounting plate 6 are hinged. After the pin shaft passes through the small ear plate at the end of the cross beam 5, the two ends are respectively hinged to the corresponding mounting plate 6 on the side. A reverse buckle device 9 is connected between the two mounting plates 6 on both sides. The reverse buckle device 9 abuts against the lower surface of the track. Driving wheel sets 7 are respectively fixed on the opposite sides of the two mounting plates 6 on both sides. The driving wheel sets 7 are fixedly connected to the middle position of the mounting plate 6 through bolts. A motor is fixed on the outside of one of the mounting plates 6. The motor is drivingly connected to the driving wheel set 7. The driving wheel set 7 is hung on the track. Guiding devices 8 are symmetrically arranged on both sides of the mounting plate 6. The guiding devices 8 are welded and fixed to the head and tail ends of the mounting plate 6.

[0027] As shown in Figure 3As shown in the figure, the reverse buckling device 9 includes a positioning plate 10. The two ends of the positioning plate 10 are respectively bolted to the mounting plates 6 on the corresponding sides. A guiding column 14 is penetrated through the positioning plate 10. The end of the guiding column 14 protruding from the upper surface of the positioning plate 10 is connected to the reverse buckling shaft 12 by bolts. The bottom of the guiding column 14 is fixed to the bottom of the positioning plate 10 by bolts. A spring 11 is sleeved on the guiding column 14 between the reverse buckling shaft 12 and the positioning plate 10. A reverse buckling wheel 13 is arranged outside the reverse buckling shaft 12. The reverse buckling wheel 13 is located between the two springs 11 on both sides. The top of the reverse buckling wheel 13 abuts against the lower surface of the track. A needle roller bearing is installed in the inner hole of the reverse buckling wheel 13. One side of the needle roller bearing is fixed by the shoulder of the reverse buckling shaft 12, and the other side is fixed by a circlip, fixing the reverse buckling wheel 13 at the middle position of the reverse buckling shaft 12. The outer circle of the reverse buckling wheel 13 presses tightly against the lower bottom surface of the track, compressing the spring 11. The upward rebounding force of the spring 11 is transmitted to the wheels of the driving wheel set 7 through the mounting plate 6, increasing the wheel pressure of the driving wheel set 7, and further increasing the climbing ability of the inspection vehicle.

[0028] By setting the reverse buckling device, the present invention improves the wheel pressure of the driving wheel set without increasing the self-weight of the inspection vehicle, increases the climbing ability of the inspection vehicle, has high running stability and low later maintenance cost; through the monitoring and feedback of the inclination sensor on the truss, relying on the eccentric gravity of the truss itself, without setting an external driving mechanism, the hydraulic cylinder can be pushed to expand and contract, realizing the rotation and leveling of the truss around the axis, with a compact structure, simple control and low cost.

Claims

1. A self-leveling inspection vehicle suitable for large slopes, characterized in that: It includes a driving device hinged to the gantry, the driving device includes a crossbeam, a group of driving components are respectively installed on the front and rear ends of the upper surface of the crossbeam, the driving component includes a mounting plate, a buckle device is connected between the mounting plates on both sides, the buckle device includes a positioning plate, the two ends of the positioning plate are respectively connected to the mounting plates on the corresponding sides, a guide column is penetrated by the positioning plate, the end of the guide column extending out of the upper surface of the positioning plate is connected to the buckle shaft, a spring is sleeved on the guide column between the buckle shaft and the positioning plate, a buckle wheel is provided on the outer side of the buckle shaft, and the top of the buckle wheel abuts against the lower surface of the track.

2. The self-leveling inspection vehicle suitable for large slopes according to claim 1, characterized in that: Hydraulic cylinders are connected to both ends of the crossbeam and the gantry.

3. The self-leveling inspection vehicle suitable for large slopes according to claim 2, characterized in that: The oil inlets of the hydraulic cylinders are connected in series with each other, the oil outlets are connected in series with each other, and a solenoid valve is provided in each oil circuit to form a closed hydraulic oil circuit.

4. The self-leveling inspection vehicle suitable for large slopes according to claim 1, characterized in that: A needle bearing is installed in the inner hole of the reverse kick wheel, one side of the needle bearing is fixed by the shaft shoulder of the reverse kick shaft, and the other side is fixed by a retaining spring.

5. The self-leveling inspection vehicle suitable for large slopes according to claim 4, characterized in that: The buckle wheel is located between the springs on both sides.

6. The self-leveling inspection vehicle suitable for large slopes according to claim 1, characterized in that: The bottom of the guide column is fixed to the bottom of the positioning plate by bolts.

7. The self-leveling inspection vehicle suitable for large slopes according to claim 1, characterized in that: The crossbeam and the mounting plate are hinged.

8. The self-leveling inspection vehicle suitable for large slopes according to claim 7, characterized in that: A driving wheel set is fixed on the inner side of the mounting plate, and a motor is fixed on the outer side of the mounting plate. The motor is drivingly connected to the driving wheel set, and the driving wheel set is hung on the track.

9. The self-leveling inspection vehicle suitable for large slopes according to claim 8, characterized in that: Guide devices are symmetrically arranged on both sides of the mounting plate.

10. The self-leveling inspection vehicle suitable for large slopes according to claim 1, characterized in that: The lower surface of the crossbeam is hinged to the gantry through a pin shaft.

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