Travelling wheel mechanism and bridge inspection vehicle
Technical Field
The utility model belongs to the technical field of bridge inspection vehicles, and particularly relates to a travelling wheel mechanism and a bridge inspection vehicle.
Background
Because the bridge possibly or has mechanical damage after a period of operation, so for safe operation of the bridge, the bridge needs to be checked regularly, so that the damage on the bridge can be found timely and the type of the current bridge inspection vehicle can be repaired timely, but the bridge inspection vehicle is operated based on the rails on two sides below the bridge deck, the travelling wheel mechanism used on the current bridge inspection vehicle is also various in structure, such as the travelling wheel mechanism disclosed in the document No. CN204940116U travelling wheel mechanism of the bridge inspection vehicle, the occupation space of the travelling wheel mechanism is large due to the fact that the driving motor is arranged externally, and the limiting effect of the travelling wheel mechanism on the steel rail is effective.
Disclosure of utility model
In order to solve the technical problems, one of the purposes of the utility model is to provide a travelling wheel mechanism which has a simple structure and good limit effect on a steel rail.
In order to achieve the above purpose, the technical scheme includes that the travelling wheel mechanism comprises a wheel seat, a driving wheel and a waist clamping wheel assembly, wherein the wheel seat is n-shaped, the driving wheel is self-powered and is arranged in the wheel seat, two ends of a wheel shaft of the driving wheel are connected with the wheel seat, the driving wheel is used for being supported at the rail top of a steel rail and providing travelling power, the waist clamping wheel assembly is arranged on the wheel seat, the waist clamping wheel assembly is provided with two waist clamping wheels which are distributed at intervals along the left-right direction and are oppositely arranged, and the two waist clamping wheels are positioned at two sides of the steel rail and extend into grooves at two sides of the steel rail to limit.
The technical scheme has the beneficial effects that as the driving wheel is supported at the rail top of the steel rail and is self-powered, the driving wheel can automatically follow the rail top of the steel rail, and the two waist clamping wheels of the waist clamping wheel assembly are positioned at two sides of the steel rail so as to clamp the steel rail, so that the steel rail can be clamped, and the travelling wheel mechanism is limited on the steel rail.
In the technical scheme, the driving wheel comprises a hub motor and a colloid wheel sleeved on the hub motor, and a wheel shaft of the driving wheel is fixedly connected with the wheel seat.
The technical scheme has the beneficial effects of simple structure and small occupied space.
In the technical scheme, the rubber wheels are grooved wheels and are matched with the rail tops of the steel rails.
The technical scheme has the beneficial effects that the colloid wheel and the steel rail have good specified matching degree, and the contact surface of the colloid wheel and the steel rail is large, so that the driving wheel can be prevented from slipping at the upper end of the steel rail.
In the above technical scheme, the waist clamping wheel assembly further comprises two wheel arms, the two wheel arms and the two waist clamping wheels are in one-to-one correspondence, the two wheel arms are vertically arranged on two sides of the wheel seat, the upper ends of the wheel arms are connected with the wheel seat, and the waist clamping wheels are arranged at the lower ends of the corresponding wheel arms.
The technical scheme has the beneficial effects that the structure is simple, and the waist clamping wheel is more convenient to install on the wheel seat.
In the above technical scheme, the waist clamping wheel assembly further comprises a driving piece and two guide rods, wherein the two guide rods are horizontally arranged on two sides of the wheel seat respectively along the left and right directions, the two guide rods are in one-to-one correspondence with the two wheel arms respectively, each wheel arm is provided with a sliding hole for the corresponding guide rod to pass through, the driving piece is arranged at the upper end of the wheel seat, the driving end of the driving piece is connected with the upper ends of the two wheel arms, and the driving piece is used for driving the two wheel arms to drive the two waist clamping wheels to move to be close to or far away from each other.
The technical scheme has the beneficial effects that the structure is simple, the wheel arm is movably arranged on the wheel seat through the driving piece and the guide rod, and the wheel arm can slide to be close to each other under the action of the driving piece so as to clamp the steel rail or slide to be far away from each other so as to loosen the steel rail.
In the above technical scheme, the driving piece is a double-stroke telescopic cylinder, which is provided with two telescopic ends, and the two telescopic ends deviate from each other in the left-right direction.
The technical scheme has the beneficial effects of simple structure, convenience in installation and compact structure after installation.
In the above technical scheme, openings are formed in the upper ends of two sides of the wheel seat, the driving piece is mounted on the bottom wall of the groove of the wheel seat, and two telescopic ends of the driving piece extend out of the two openings respectively and are connected with the corresponding wheel arms.
The technical scheme has the beneficial effects that the structure is simple, and the upper end of the wheel seat can be vacated for connection with a vehicle body.
In the above technical scheme, two one ends of the guide rods, which are far away from each other, are provided with expansion parts for limiting.
The technical scheme has the beneficial effects that the expansion part and the wheel seat can limit the sliding stroke of the wheel arm together.
In the technical scheme, the waist clamping wheel is of a frustum shape, and the wheel surface of the waist clamping wheel is matched with the groove top wall at the corresponding side of the steel rail.
The technical scheme has the beneficial effects that the cohesion degree between the two waist clamping wheels and the steel rail is good.
The second purpose of the invention is to provide a bridge inspection vehicle which has a simple structure and good cohesion with the steel rail.
In order to achieve the purpose, the technical scheme of the utility model is that the bridge inspection vehicle comprises the travelling wheel mechanism.
The technical scheme has the beneficial effects of simple structure and good operation safety.
Drawings
FIG. 1 is a front view of the assembly of the running gear mechanism and the rail according to embodiment 1 of the present utility model;
FIG. 2 is a side view of a drive wheel according to embodiment 1 of the present utility model;
FIG. 3 is a side view of the wheel mount of embodiment 1 of the present utility model;
fig. 4 is a side view of the wheel arm of embodiment 1 of the present utility model.
In the drawing, a wheel seat 1, a hole 11, a driving wheel 2, a wheel hub motor 21, a rubber wheel 22, a waist clamping wheel 3, a waist clamping wheel 31, a wheel arm 32, a sliding hole 321, a driving piece 33, a guide rod 34, an expanding part 341 and a steel rail 4 are arranged.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will be more clearly described in the following description and claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
Example 1
As shown in fig. 1, this embodiment provides a travelling wheel mechanism, including a wheel seat 1, a driving wheel 2 and a waist-clamping wheel assembly 3, the wheel seat 1 is n-shaped, the driving wheel 2 is self-powered, and the driving wheel 2 is disposed in the wheel seat 1, two ends of its axle are connected with the wheel seat 1, the driving wheel 2 is used for supporting at the rail top of the steel rail 4 and providing travelling power, the waist-clamping wheel assembly 3 is disposed on the wheel seat 1, and the waist-clamping wheel assembly 3 has two waist-clamping wheels 31 distributed at intervals along the left-right direction and disposed opposite to each other, and the two waist-clamping wheels 31 are disposed at two sides of the steel rail 4 and extend into grooves at two sides of the steel rail 4 to limit.
As shown in fig. 2, in the above technical solution, the driving wheel 2 includes a hub motor 21 and a rubber wheel 22 sleeved on the hub motor 21, and the axle of the driving wheel 2 is fixedly connected with the wheel seat 1, which has a simple structure and small occupied space, in this embodiment, the axle of the driving wheel is the motor shaft of the hub motor, and the axle of the driving wheel is fixedly connected with the wheel seat.
In the above technical solution, the rubber wheel 22 is sheave-shaped and is matched with the rail top of the steel rail 4, so that the rubber wheel and the steel rail have good specified matching degree, and the contact surface between the rubber wheel and the steel rail is large, so that the driving wheel can be prevented from slipping at the upper end of the steel rail (the rubber wheel can be made of rubber similar to the material of the vehicle tire, and has good wear resistance).
In this embodiment, the waist clamping wheel may be a steel wheel, and in this embodiment, the driving wheel and the two steel wheels clamp the rail top of the steel rail from three directions.
Referring to fig. 1 in detail, in the above technical solution, the waist-clamping wheel assembly 3 further includes two wheel arms 32, two wheel arms 32 and two waist-clamping wheels 31 are in one-to-one correspondence, two wheel arms 32 are vertically disposed at two sides of the wheel seat 1, and the upper end of the wheel arm 32 is connected with the wheel seat 1, and the waist-clamping wheels 31 are mounted at the lower ends corresponding to the wheel arms 32, so that the waist-clamping wheels are more convenient to mount on the wheel seat.
Referring to fig. 1 and 4 in detail, in the above technical solution, the waist-clamping wheel assembly 3 further includes a driving member 33 and two guide rods 34, the two guide rods 34 are horizontally mounted on two sides of the wheel seat 1 along the left-right direction, the two guide rods 34 are respectively corresponding to the two wheel arms 32 one by one, each wheel arm 32 has a sliding hole 321 through which the corresponding guide rod 34 passes, the driving member 33 is mounted at the upper end of the wheel seat 1, the driving end of the driving member 33 is connected with the upper ends of the two wheel arms 32, the driving member 33 is used for driving the two wheel arms 32 to drive the two waist-clamping wheels 31 to move close to or far away from each other, the structure is simple, the wheel arms are movably mounted on the wheel seat through the driving member and the guide rods, and the wheel arms can slide close to each other under the action of the driving member to clamp the rail or slide away from each other to release the rail.
In the above technical solution, the driving member 33 is a dual-stroke telescopic cylinder, which has two telescopic ends, and the two telescopic ends deviate from each other in the left-right direction, which has a simple structure, is convenient to install, and has a compact structure after installation.
As shown in fig. 3, in the above technical solution, the upper ends of the two sides of the wheel seat 1 are provided with openings 11, the driving member 33 is mounted on the bottom wall of the groove of the wheel seat 1, and two telescopic ends thereof respectively extend out through the two openings 11 and are connected with the corresponding wheel arms 32, so that the structure is simple, and the upper end of the wheel seat can be vacated for connection with a vehicle body.
In the above technical solution, two ends of the guide rods 34 that are far away from each other are provided with an expansion portion 341 for limiting, so that the expansion portion and the wheel seat together limit the sliding travel of the wheel arm.
In the above technical solution, the waist-clamping wheel 31 is in a frustum shape, and its wheel surface is matched with the groove top wall on the corresponding side of the steel rail 4, so that the cohesion degree between the two waist-clamping wheels and the steel rail is good.
In this embodiment, when the driving member drives the two waist clamping wheels away from each other, the rail can be loosened, so that the whole travelling wheel mechanism can be withdrawn upwards from the rail.
Example 2
The embodiment provides a bridge inspection vehicle, which comprises the travelling wheel mechanisms according to embodiment 1, and has a simple structure and good running safety (the bridge inspection vehicle further comprises a vehicle body, the travelling wheel mechanisms are provided with four, the four travelling wheel mechanisms are arranged on two sides of the vehicle body in rectangular distribution, namely, two travelling wheel mechanisms are respectively arranged on two sides of the vehicle body along the front-back direction at intervals).
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and those skilled in the art may easily implement the present utility model as shown in the drawings and described above, but many modifications, adaptations and variations of the present utility model using the above disclosed technical matters will be equivalent to the embodiments of the present utility model without departing from the scope of the present utility model, and meanwhile, any equivalent changes, adaptations and variations of the above embodiments according to the essential technology of the present utility model are all within the scope of the technical matters of the present utility model.