CN214492387U - Quick-change wheel structure and bridge inspection vehicle applying same - Google Patents

Abstract

The utility model discloses a quick-change wheel structure and bridge inspection vehicle applying the structure, which belongs to the technical field of bridge inspection vehicle structures, the utility model mainly adopts an axle, an end cover, a wheel hub and an annular wheel to form the whole quick-change wheel structure, wherein, a first limit part and a second limit part which are positioned outside two ends of the annular wheel in the axial direction are respectively formed on the end cover and the wheel hub, and each limit part is contacted with two ends of the annular wheel in the axial direction to limit the annular wheel; when carrying out the dismouting, implementation personnel only need can remove first spacing portion, the spacing portion of second to the annular wheel spacing through revolving to twist screw rod portion, and implementation personnel can replace the annular wheel, the utility model has the advantages of easy dismounting.

Description

Quick-change wheel structure and bridge inspection vehicle applying same

Technical Field

The utility model relates to a bridge inspection car technical field particularly, relates to bridge inspection car of quick change wheel structure and applied this structure.

Background

The bridge inspection vehicle generally travels along an I-steel or H-steel rail arranged on a bridge through wheels on a traveling driving box to complete the forward or backward movement. At present, the wheel structure of domestic bridge inspection car generally adopts three kinds of forms, and steel wheel structure, whole rubber coating wheel structure and removable formula rubber coating wheel structure promptly, these traditional structures have following defect:

(1) the steel wheel structure, its steel wheel and wheel hub present a whole generally, the later stage is dismantled and maintained the trouble, the implementation cost is higher; meanwhile, the friction coefficient between the steel wheel and the steel rail is low, so that the steel wheel is easy to slip when walking on the rail, and in addition, the steel wheel is easy to damage the coating of the rail to cause the corrosion of the steel rail;

(2) the structure form of the integral rubber-covered wheel structure is generally that polyurethane with a certain thickness is poured and adhered on the periphery of a wheel hub or a rubber material is directly wrapped on the periphery of the wheel hub. The wheel structure of the type has excellent driving adhesion force when walking on a steel rail, cannot damage the coating of the rail after long-term use, but needs to be replaced periodically because the polyurethane or rubber layer can cause abrasion or aging of the coating layer after long-term operation. Meanwhile, as the wrapping layers are bonded with the hub, the disassembly, the assembly and the maintenance are also troublesome.

(3) The replaceable rubber-covered wheel structure generally comprises two semicircular steel clamping pieces wrapping a polyurethane rubber-covered layer, penetrates through the semicircular polyurethane layer and the steel clamping pieces through radial connecting screws, and is fixed on a wheel hub to form detachable connection. The structure can solve the technical problem of the disassembly and replacement efficiency of the rubber coating wheel when the polyurethane layer is worn or aged. But because of the deformation and creep of the polyurethane, the adhesive layer of the polyurethane and the steel clip is easy to be degummed; meanwhile, the structure is easy to have the phenomena of bolt shearing and the like through the rotation torque of the bolt; frequent vibration of the bridge inspection vehicle in the operation process can often cause bolt loosening, so that the rubber covered wheel falls off.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bridge inspection car of quick change wheel structure and applied this structure, its dismouting, maintenance are got up comparatively conveniently.

The embodiment of the utility model is realized like this:

quick change wheel structure, including axletree, end cover, wheel hub and annular wheel, the end cover is located outside the rear end of axletree coaxially, the end cover have coaxially penetrate in the middle of the axletree rear end and with axletree threaded connection's screw rod portion, the wheel hub cover is established on the axletree, the annular wheel can be established on wheel hub along axletree axial displacement ground, the end cover has and extends to the first spacing portion in the annular wheel rear end outside, wheel hub has the spacing portion of second that extends to the annular wheel front end outside, first spacing portion and the spacing portion of second respectively with the both ends of annular wheel contact to restrain the annular wheel and be in axial ascending displacement for wheel hub, annular wheel and wheel hub restrict both through setting up the parallel key between the two and are in axletree ascending displacement in week.

Preferably, the annular wheel mainly by a plurality of edges the arc section that the circumference of axletree extended and arranged in proper order constitutes, first spacing portion is connected with inserts the first grafting tooth in each arc section rear end terminal surface simultaneously, the spacing portion of second is connected with inserts the second grafting tooth in each arc section front end terminal surface simultaneously, first grafting tooth, second grafting tooth are the annular shape with the axletree coaxial line.

Preferably, the number of the arc-shaped sections is two, and the two arc-shaped sections are both in a semicircular shape.

Preferably, the arc-shaped section is of an integrated structure made of a nylon material.

Preferably, the number of the flat keys is consistent with the number of the arc-shaped sections, and the arc-shaped sections are connected with the hub through the corresponding flat keys.

Preferably, the first inserting tooth is a clamping ring, and the clamping ring is abutted to the first limiting part.

Preferably, the second inserting tooth is an annular step integrally formed with the second limiting part.

Preferably, the end part of the end cover of the hub is located on the inner side of the first limiting part in the radial direction of the axle, the hub further comprises a plurality of set screws arranged along the radial direction of the axle, the set screws penetrate through the first limiting part and penetrate into the part of the hub located on the inner side of the first limiting part, and the set screws are in threaded connection with the first limiting part.

Preferably, the end cover is formed with a plurality of rectangular open grooves inwardly recessed in a radially outer side portion thereof, and the plurality of rectangular open grooves are arranged at intervals in a circumferential direction of the axle.

The utility model also provides a bridge inspection car, include as above quick change wheel structure.

Since the technical scheme is used, the beneficial effects of the utility model include:

the utility model mainly adopts the axle, the end cover, the hub and the annular wheel to form the whole quick-change wheel structure, wherein, a first limit part and a second limit part which are positioned outside the two ends of the annular wheel in the axial direction are respectively formed on the end cover and the hub, and each limit part is contacted with the two ends of the annular wheel in the axial direction to limit the annular wheel; when carrying out the dismouting, implementation personnel only need can remove first spacing portion, the spacing portion of second to the annular wheel spacing through revolving to twist screw rod portion, and implementation personnel can replace the annular wheel, the utility model has the advantages of easy dismounting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive efforts.

Fig. 1 is a schematic view of a quick-change wheel structure and a rail according to embodiment 1 of the present invention;

fig. 2 is an axial schematic view of a quick-change wheel structure in embodiment 1 provided by the present invention;

fig. 3 is a schematic cross-sectional view taken along line a-a in fig. 2.

[ Specification of symbols ]

1-quick-change wheel structure, 11-axle, 12-end cover, 121-first limit part, 122-snap ring, 123-screw part, 13-hub, 131-second limit part, 132-annular step, 14-annular wheel, 141-arc section, 15-set screw, 16-rectangular open slot, 17-flat key;

2-a track;

and 3, driving the box.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, the main body of this embodiment 1 is a bridge inspection vehicle, the inspection vehicle includes a quick-change wheel structure 1 for being cooperatively connected with a track 2, the quick-change wheel structure 1 is drivingly connected with a drive box 3, wherein, referring to fig. 2 and 3, the quick-change wheel structure 1 includes an axle 11, an end cover 12, a hub 13 and a ring wheel 14, the end cover 12 is coaxially disposed outside a rear end of the axle 11, the end cover 12 has a screw rod portion 123 coaxially penetrating into a rear end of the axle 11 and being threadedly connected with the axle 11, the hub 13 is sleeved on the axle 11, the ring wheel 14 is sleeved on the hub 13 axially movably along the axle 11, the end cover 12 has a first limiting portion 121 extending to an outer side of a rear end of the ring wheel 14, the hub 13 has a second limiting portion 131 extending to an outer side of a front end of the ring wheel 14, the first limiting portion 121 and the second limiting portion 131 are respectively in contact with two ends of the ring wheel 14, to limit the displacement of the annular wheel 14 relative to the hub 13 in the axial direction, the annular wheel 14 and the hub 13 being limited in the displacement thereof in the circumferential direction of the axle 11 by a flat key 17 provided therebetween.

The annular wheel 14 is intended to be used as a part of the entire inspection vehicle cooperating with the rail 2, and in this embodiment is made of a material, in particular nylon, which needs to be replaced periodically. While the flat key 17 is mainly used for transmitting torque. When the annular wheel 14 needs to be replaced, an operator only needs to reversely twist the screw part 123 to draw out the screw part 123 from the axle 11, at this time, the first limiting part 121 is no longer in contact with the rear end of the annular wheel 14, and the operator can move the annular wheel 14 relative to the hub 13 along the axial direction of the axle 11 toward the rear end, so that the entire annular wheel 14 can be taken down. The quick-change wheel structure 1 in the embodiment is convenient to disassemble and assemble, and the maintenance efficiency of the whole inspection vehicle is effectively improved.

The material of the ring wheel 14 may be nylon, other non-metallic materials with hardness lower than that of the zinc coating, or copper alloy or cast steel wrapped around the metal steel ring.

In addition, in the case of transmitting torque by using the flat keys 17, in order to realize that the annular wheel 14 is fitted over the hub 13 so as to be movable in the axial direction of the axle 11, and further, to realize that the annular wheel 14 is movable in the axial direction of the axle 11 toward the rear end with respect to the hub 13, the flat key 17 groove formed in the annular wheel 14 for fitting with the flat keys 17 is not of a standard pattern, and the flat key 17 groove penetrates the entire annular wheel 14 in the axial direction of the axle 11, so that the flat keys 17 restrict only the displacement of the annular wheel 14 and the hub 13 in the circumferential direction of the axle 11, without restricting the degree of freedom of the annular wheel 14 and the hub 13 in the axial direction of the axle 11.

The annular wheel 14 may be provided in a unitary form or, as in the wheel construction provided in the present embodiment, in a multi-lobed form to facilitate replacement or targeted replacement by the practitioner. In addition, after the annular wheel 14 is in a multi-lobe form, the annular wheel 14 and the hub 13 should be constrained in the radial direction, so in this embodiment, the annular wheel 14 is mainly composed of a plurality of arc-shaped segments 141 extending along the circumferential direction of the axle 11 and arranged in sequence, the first limiting portion 121 is connected with first plug-in teeth simultaneously inserted into the rear end face of each arc-shaped segment 141, the second limiting portion 131 is connected with second plug-in teeth simultaneously inserted into the front end face of each arc-shaped segment 141, and the first plug-in teeth and the second plug-in teeth are in an annular shape coaxial with the axle 11. Since the first and second plug teeth are simultaneously inserted into the arc segments 141, there is no degree of freedom between the arc segments 141 and the hub 13 in the radial direction of the axle 11.

The number of the arc-shaped segments 141 can be specifically selected according to the requirements of the implementer (for example, three arc-shaped segments 141 can be adopted), and in this embodiment, the number of the arc-shaped segments 141 is two, and two arc-shaped segments 141 are both semicircular, and simultaneously, two the arc-shaped segments 141 are all integrated structures made of nylon materials. The number of the flat keys 17 corresponds to the number of the arc-shaped segments 141, and the arc-shaped segments 141 are connected with the hub 13 through the corresponding flat keys 17.

In this embodiment, for convenience of assembly, the first inserting tooth is a snap ring 122, and the snap ring 122 abuts against the first limiting portion 121. Specifically, when assembling, the worker may insert the snap ring 122 between the first stopper portion 121 and the rear end surface of the ring wheel 14 (each arc-shaped segment 141).

Due to the presence of the snap ring 122, the second insertion tooth may be provided in a pattern integrally formed with the second stopper portion 131 to increase the assembly rate. Therefore, in the present embodiment, the second insertion tooth is an annular step 132 integrally formed with the second position-limiting portion 131.

In addition, it is obvious that, for the screw portion 123, a locking structure is required to be provided to avoid the end cover 12 from being accidentally removed during the rotation of the annular wheel 14, so in this embodiment, the end portion of the hub 13 facing the end cover 12 is located inside the first limiting portion 121 in the radial direction of the axle 11, and the locking device further includes a plurality of set screws 15 arranged along the radial direction of the axle 11, wherein the set screws 15 penetrate through the first limiting portion 121 and penetrate into the portion of the hub 13 located inside the first limiting portion 121, and the set screws 15 are in threaded connection with the first limiting portion 121. With the above configuration, the screw 123 can be prevented from loosening. The set screw 15 does not easily fall off with the rotation of the ring wheel 14 since it extends in the non-moving direction.

In this embodiment, to facilitate the disassembly of the lower end cap 12, a plurality of rectangular open grooves 16 are formed in the radially outer side portion of the end cap 12 in an inwardly recessed manner, and the plurality of rectangular open grooves 16 are arranged at intervals along the circumferential direction of the axle 11. After disassembling the set screw 15, the operator can quickly unscrew the entire end cap 12 by using a tool in cooperation with the rectangular opening slot 16, so that the end cap 12 is separated from the axle 11.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Quick change wheel structure, its characterized in that, including axletree, end cover, wheel hub and annular wheel, the end cover is located outside the rear end of axletree coaxially, the end cover has the screw rod portion that coaxially penetrates in the middle of the axletree rear end and with axletree threaded connection, the wheel hub cover is established on the axletree, the annular wheel can be established on wheel hub along axletree axial displacement ground, the end cover has and extends to the first spacing portion in the annular wheel rear end outside, wheel hub has the spacing portion of second that extends to the annular wheel front end outside, first spacing portion and second spacing portion respectively with the both ends of annular wheel contact to restrain the annular wheel for wheel hub displacement in the axial, annular wheel and wheel hub limit both and be in through setting up the parallel key between the two the ascending displacement of axletree circumference.

2. The quick-change wheel structure according to claim 1, wherein the annular wheel is mainly composed of a plurality of arc-shaped segments extending in the circumferential direction of the axle and arranged in sequence, the first limiting portion is connected with first socket teeth simultaneously inserted into the rear end faces of the arc-shaped segments, the second limiting portion is connected with second socket teeth simultaneously inserted into the front end faces of the arc-shaped segments, and the first socket teeth and the second socket teeth are in an annular shape coaxial with the axle.

3. The quick-change wheel structure according to claim 2, wherein the number of the arc-shaped sections is two, and the two arc-shaped sections are semicircular.

4. The quick-change wheel structure according to claim 3, wherein the arc-shaped segment is a one-piece structure made of nylon material.

5. The quick-change wheel structure according to claim 4, wherein the number of flat keys corresponds to the number of arc-shaped segments, and the arc-shaped segments are connected with the hub through the corresponding flat keys.

6. The quick-change wheel structure as claimed in claim 2, wherein the first inserting tooth is a snap ring, and the snap ring abuts against the first limiting portion.

7. The quick-change wheel structure as claimed in claim 2, wherein the second engagement tooth is an annular step integrally formed with the second limiting portion.

8. The quick-change wheel structure according to claim 1, wherein an end portion of the hub facing the end cover is located radially inward of the first limit portion in the axle, and further comprising a plurality of set screws arranged radially inward of the axle, the set screws penetrating through the first limit portion and penetrating into a portion of the hub located inward of the first limit portion, the set screws being threadedly connected to the first limit portion.

9. The quick-change wheel structure according to claim 1, wherein the end cover is formed with a plurality of rectangular open grooves recessed inward on a radially outer side portion thereof, the plurality of rectangular open grooves being arranged at intervals in a circumferential direction of the axle.

10. A bridge inspection vehicle, characterized in that it comprises a quick-change wheel structure according to any one of claims 1 to 9.

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