CN215622342U

CN215622342U - Variable cross-section guide wheel body structure

Info

Publication number: CN215622342U
Application number: CN202122043031.3U
Authority: CN
Inventors: 崔奇; 章永涛; 秦军荣; 刘跃吉; 王庆; 王帅
Original assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Current assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-01-25
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a variable-section guide wheel body structure which comprises a guide wheel body, wherein a guide ring is arranged on the outer peripheral wall of the guide wheel body, and a limiting ring is arranged on the outer peripheral wall of the guide ring; the guide wheel body comprises a first symmetrical surface, guide surfaces are symmetrically arranged on two opposite sides of the guide ring along the first symmetrical surface, and limiting surfaces are symmetrically arranged on two opposite sides of the limiting ring along the first symmetrical surface; the rubber track is matched with the inner rail of the rubber track through the arranged guide surface, so that the rotating direction of the rubber track is corrected, the rubber track is ensured to normally rotate, and the limit surface is matched with the inner rail of the rubber track.

Description

Variable cross-section guide wheel body structure

Technical Field

The utility model belongs to the technical field of crawler wheels, and particularly relates to a variable-section guide wheel body structure.

Background

The crawler wheels have strong bearing capacity and adaptability to terrain, so the crawler wheels are widely used as travelling mechanisms of large-scale machines such as excavators and bulldozers, and chassis travelling mechanisms of hydraulic excavators comprise four wheels and one belt (namely driving wheels, guide wheels, thrust wheels, riding wheels and tracks), tensioning devices, buffer springs, travelling mechanisms, travelling frames and the like, wherein the guide wheels are used for guiding the tracks to correctly revolve, most excavators also play the role of the thrust wheels, so the contact area of the tracks to the ground can be increased, the ground pressure is reduced, and the smaller the distance between the guide wheels and the nearest thrust wheels is, the better the guidance is.

When the existing mini excavator is assembled with the rubber track, the problem of derailment and belt falling is easily caused, the guide wheel boss needs to be heightened for solving the problem of belt falling, and the rubber track is extremely difficult to assemble after the guide wheel boss is heightened.

The utility model discloses a chinese utility model patent that publication is CN202608920U discloses an excavator chassis running gear guide wheel device, including guide wheel body, axle, outer support, inner support, axle sleeve and sealing member, the axle passes the centre bore of guide wheel body through the axle sleeve, and outer support and inner support are located guide wheel body both sides respectively, adorn at an axle both ends through the core pin admittedly, the guide wheel body is formed by wheel rim, width of cloth and wheel hub welding, the cross section of wheel rim is outer narrow wide echelonment in, increase the oil storage tank on the wheel hub. The guide wheel body adopts a split type welding structure, and has reasonable structure and light weight; an oil storage tank is added at the hub, so that the lubricating condition is effectively improved, and the abrasion is reduced; the inner support and the outer support are fixed with the shaft through the center pin, stress concentration is reduced, strength is improved, assembly is convenient, and sealing is more reliable.

The ratio of the width to the thickness of the wheel rim of the guide wheel device is generally less than 0.65, and the rubber track is easy to install, but the problem of derailment and belt falling is easy to occur.

Disclosure of Invention

The utility model aims to provide a variable-section guide wheel body structure, which solves the problem that the conventional guide wheel is easy to derail and fall when a rubber crawler belt is assembled.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a variable cross-section guide wheel body structure comprises a guide wheel body, wherein a guide ring is arranged on the outer peripheral wall of the guide wheel body, and a limiting ring is arranged on the outer peripheral wall of the guide ring;

the rubber track is guided to rotate correctly by the aid of the guide ring and the inner rail of the rubber track, and the rubber track is prevented from derailing and falling by the aid of the limiting ring and the inner rail of the rubber track.

The guide wheel body comprises a first symmetrical surface, guide surfaces are symmetrically arranged on two opposite sides of the guide ring along the first symmetrical surface, limiting surfaces are symmetrically arranged on two opposite sides of the limiting ring along the first symmetrical surface, the guide surfaces are matched with the inner gears of the rubber track and used for correcting the rotating direction of the rubber track, the rubber track is ensured to normally revolve, the limiting surfaces are matched with the inner gears of the rubber track, when the inner gears of the rubber track are separated from contact with the guide surfaces, and the rubber track has the tendency of derailing and dropping, the inner gears of the rubber track are blocked by the limiting surfaces, and the rubber track is prevented from derailing and dropping.

Furthermore, the included angle between the guide surface and the first symmetrical surface is A, A is more than or equal to 0 degrees and less than or equal to 10 degrees, the guide surface is obliquely arranged, the rubber crawler belt is convenient to mount, the inclined angle is smaller, the guide surface can be better matched with the inner gear of the rubber crawler belt, and a better guide effect is achieved.

Further, spacing face with contained angle between the first symmetrical face is B, and 30 be less than or equal to B and be less than or equal to 60 spacing face slope settings, and inclination is bigger than or equal to, when assembling rubber track, utilizes the crowbar card on spacing face, and rubber track can easily slide spacing face, with the guide ring and the spacing ring card that set up on the leading wheel body in rubber track inner rail, the assembly of being convenient for.

Further, the width of the inner peripheral wall of the guide ring is C, the outer peripheral wall of the limit ring reaches the distance of the guide wheel body is D, 0.7C/D is less than or equal to 0.85, when the rubber track contacts the guide wheel body, the outer peripheral wall of the limit ring reaches the distance of the guide wheel body is also the depth of the inner gear of the limit ring clamping rubber track, when the inner gear of the limit ring clamping rubber track is too shallow, the rubber track is easy to derail, the depth of the inner gear of the limit ring clamping rubber track needs to be deep enough to play a good effect of preventing the rubber track from derailing, and when 0.7C/D is less than or equal to 0.85, the good effect of preventing the rubber track from derailing can be played.

Further, the periphery wall of the limiting ring is provided with a transition surface, and two side edges opposite to the transition surface are respectively overlapped with the edges of the two limiting surfaces.

Furthermore, the transition surface is an arc surface, so that the rubber track can slide over the transition surface when being assembled, and the assembly is convenient.

Further, the edge of the guide surface close to the limit ring coincides with the limit surface.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the rubber track is matched with the inner rail of the rubber track through the arranged guide surface, so that the rotating direction of the rubber track is corrected, the rubber track is ensured to normally rotate, and the limit surface is matched with the inner rail of the rubber track.

(2) The guide surface is arranged obliquely, so that the rubber track is convenient to mount, the inclination angle is small, the guide surface can be better matched with the inner rail of the rubber track, and a better guide effect is achieved.

(3) The limiting surface is obliquely arranged, the inclination angle is larger, when the rubber track is assembled, the crowbar is clamped on the limiting surface, the rubber track can easily slide through the limiting surface, and the guide ring and the limiting ring arranged on the guide wheel body are clamped in the inner gear of the rubber track, so that the assembly is facilitated.

(4) When the rubber track contacts the guide wheel body, the distance from the peripheral wall of the limit ring to the guide wheel body is also the depth of the limit ring clamped into the inner gear of the rubber track, when the inner gear of the limit ring clamped into the rubber track is too shallow, the rubber track is easy to derail, and the depth of the limit ring clamped into the inner gear of the rubber track needs to be deep enough to achieve a good effect of preventing the rubber track from derailing.

Drawings

FIG. 1 is a schematic structural view of a guide wheel body with a variable cross-section according to the present invention;

FIG. 2 is a cross-sectional view of a guide wheel body with a variable cross-section according to the present invention;

FIG. 3 is an enlarged partial cross-sectional view taken at A in FIG. 2;

in the figure: 1. a guide wheel body; 2. a guide ring; 3. a limiting ring; 4. a guide surface; 5. a limiting surface; 6. a transition surface.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the present embodiment provides a variable cross-section guide wheel body structure, including a guide wheel body 1, a guide ring 2 is disposed on an outer peripheral wall of the guide wheel body 1, and a limit ring 3 is disposed on an outer peripheral wall of the guide ring 2;

the rubber track is guided to rotate correctly by the aid of the guide ring 2 matched with the inner rail of the rubber track, and the rubber track is prevented from derailing and falling by the aid of the limiting ring 3 matched with the inner rail of the rubber track.

The guide wheel body 1 comprises a first symmetrical surface, the left half part and the right half part of the guide wheel body 1 in the figure 2 are symmetrically arranged along the first symmetrical surface, guide surfaces 4 are symmetrically arranged on two opposite sides of the guide ring 2 along the first symmetrical surface, limiting surfaces 5 are symmetrically arranged on two opposite sides of the limiting ring 3 along the first symmetrical surface, the limiting surfaces 4 are matched with inner gears of the rubber track and used for correcting the rotating direction of the rubber track, the rubber track is ensured to normally revolve, the limiting surfaces 5 are matched with the inner gears of the rubber track, when the inner gears of the rubber track are separated from contact with the guide surfaces 4, and the rubber track has the tendency of derailing and falling, the inner gears of the rubber track are blocked by the limiting surfaces 5, and the rubber track is prevented from derailing and falling.

Further, the guide surface 4 with the contained angle between the first symmetrical surface is A, 0 is no less than 10A, and the guide surface 4 slope sets up, the rubber track installation of being convenient for, and inclination is less, make guide surface 4 can be better with the cooperation of the interior shelves of rubber track, play better guide effect.

Further, spacing face 5 with contained angle between the first symmetrical face is B, and 30 be less than or equal to B and be less than or equal to 60 spacing face 5 slopes to set up, and inclination is bigger than or equal to, when assembling rubber track, utilizes the crowbar card on spacing face 5, and rubber track can easily slide spacing face 5, blocks guide ring 2 and the spacing ring 3 that sets up on the guide wheel body 1 in rubber track inner rail, the assembly of being convenient for.

Further, the width of the inner peripheral wall of the guide ring 2 is C, the distance from the outer peripheral wall of the limit ring 3 to the guide wheel body 1 is D, C/D is more than or equal to 0.7 and less than or equal to 0.85, when the rubber track contacts with the guide wheel body 1, the distance from the outer peripheral wall of the limit ring 3 to the guide wheel body 1 is also the depth of the limit ring 3 clamped into the inner gear of the rubber track, when the inner gear of the rubber track clamped into the limit ring 3 is too shallow, the rubber track is easy to derail, when the inner gear of the rubber track clamped into the limit ring 3 is too deep, the rubber track is difficult to install, specifically, when C/D is less than or equal to 0.65, the rubber track is easy to install but also easy to fall off, when C/D is more than or equal to 0.7, the rubber track is difficult to fall off but is also difficult to install, the guide wheel body structure limits the value of (C/D) to be between 0.7 and 0.85, namely, C/D is more than or equal to 0.7 and less than or equal to 0.85, can play better effect that prevents the derailment of rubber track, set up the inclined plane through the both sides at guide ring 2 and spacing ring 3 simultaneously, guide face 4 and spacing face 5 promptly, restrict guide face 4 and spacing face 5's inclination for this guide wheel body structure is making the difficult derailment of rubber track when dropping, also can be convenient for assemble.

Further, the periphery wall of the limiting ring 3 is provided with a transition surface 6, and two opposite side edges of the transition surface 6 are respectively overlapped with the edges of the two limiting surfaces 5.

Furthermore, the transition surface 6 is an arc-shaped surface, so that the rubber track can slide over the transition surface 6 when being assembled, and the assembly is convenient.

Further, the edge of the guide surface 4 near the stop collar 3 coincides with the stop surface 5.

Further, the guide ring 2 and the limit ring 3 are integrally formed with a portion of the outer periphery of the guide wheel body 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A variable cross-section guide wheel body structure comprises a guide wheel body and is characterized in that a guide ring is arranged on the outer peripheral wall of the guide wheel body, and a limiting ring is arranged on the outer peripheral wall of the guide ring;

the guide wheel body comprises a first symmetrical surface, guide surfaces are symmetrically arranged on two opposite sides of the guide ring along the first symmetrical surface, and limiting surfaces are symmetrically arranged on two opposite sides of the limiting ring along the first symmetrical surface.

2. A variable area guide wheel body structure according to claim 1 wherein the angle between the guide surface and the first symmetrical surface is a, 0 ° to 10 °.

3. The structure of claim 1, wherein the angle between the limiting surface and the first symmetrical surface is B, and B is between 30 ° and 60 °.

4. The structure of a guide wheel body with a variable cross section as claimed in claim 1, wherein the width of the inner peripheral wall of the guide ring is C, the distance from the outer peripheral wall of the limit ring to the guide wheel body is D, and C/D is greater than or equal to 0.7 and less than or equal to 0.85.

5. The structure of claim 1, wherein the retaining ring has a peripheral wall with a transition surface, and two opposite edges of the transition surface are respectively coincident with the edges of the two retaining surfaces.

6. The structure of claim 5, wherein the transition surface is an arcuate surface.

7. A variable area guide wheel body structure according to claim 1, wherein the edge of the guide surface adjacent the retainer ring coincides with the retainer surface.