CN117432775A - Crawler-type engineering machinery driving tooth block - Google Patents

Abstract

The application discloses crawler-type engineering machine driving tooth piece, including toothholder, tooth cover and tight piece that rises, wherein the toothholder is used for connecting hub disk through the inboard end, wherein the tooth cover corresponds the cover and establishes the external tooth portion of toothholder, wherein the tight piece that rises runs through simultaneously and connects with interference fit's mode the tooth cover with the toothholder perpendicularly. The utility model provides a crawler-type engineering machine tool drive tooth piece creative carries out detachable interference connection cooperation with conventional drive tooth piece, in case the external tooth portion of drive tooth piece takes place wearing and tearing or tooth breakage phenomenon need change the drive tooth piece, can take off the tooth cover on the drive tooth piece and change new tooth cover, can greatly reduced maintenance replacement cost, only change the tooth cover under the circumstances of not dismantling the toothholder simultaneously, can also improve equipment maintenance efficiency, in addition, can also the waste of significantly reduced resource for the drive tooth piece that the damage was handled to conventional scrapping.

Description

Crawler-type engineering machinery driving tooth block

Technical Field

The invention relates to the technical field of crawler-type engineering machinery equipment, in particular to a crawler-type engineering machinery driving tooth block.

Background

The large crawler engineering machine walks through a chain wheel driving chain, wherein the chain wheel is formed by fastening and connecting a hub disc and a driving tooth block through bolts.

During walking, the external tooth part of the driving tooth block is in extrusion friction fit with the pin bush of the caterpillar link, so that the situation of tooth breakage or serious abrasion of the external tooth part is easy to occur in the use process. In case of the situation, the driving tooth block needs to be replaced in time, the replaced driving tooth block is scrapped, the utilization value is lost, and therefore the problem of resource waste and high use cost of the driving tooth block exists.

Disclosure of Invention

The invention has the advantages that the invention provides the crawler-type engineering machinery driving tooth block, wherein the conventional driving tooth block is in detachable interference connection fit, once the external tooth part of the driving tooth block is worn or broken and the driving tooth block needs to be replaced, the tooth sleeve on the driving tooth block can be removed and replaced, the newly installed tooth sleeve is connected with the tooth seat by the tension piece and then is remounted on the hub disc, and other driving tooth blocks are matched with a normal driving chain to travel, so that the maintenance and replacement cost can be greatly reduced, meanwhile, the equipment maintenance efficiency can be improved only by replacing the tooth sleeve under the condition of not disassembling the tooth seat, and in addition, the resource waste can be greatly reduced compared with the conventional scrapped damaged driving tooth block.

The invention has the advantages that when the tensioning piece is implemented as the waist-shaped hole bayonet lock, the contact area between the tensioning piece and the tooth seat and the tooth sleeve can be increased, and the stress area is increased, so that the overall assembly strength of the driving tooth block can be improved, in addition, the waist-shaped holes on the tooth seat and the tooth sleeve corresponding to the waist-shaped hole bayonet lock can play a role in angle orientation, and further, the assembly compactness of the driving tooth block is improved, and the stability is better.

In order to achieve at least one advantage of the invention, the invention provides a crawler-type engineering machinery driving tooth block, which comprises a tooth holder, a tooth sleeve and a tensioning piece, wherein the tooth holder is used for being connected with a hub disc through an inner side end, the tooth sleeve is correspondingly sleeved on an outer tooth part of the tooth holder, and the tensioning piece penetrates through and is vertically connected with the tooth sleeve and the tooth holder in an interference fit mode.

According to an embodiment of the invention, the tensioning element is embodied as a spring tensioning pin.

According to an embodiment of the present invention, the tooth holder and the tooth sleeve are both extended in an arc shape with the center of the hub disk as the center, and the plurality of tension members are located in the corresponding external tooth parts.

According to an embodiment of the invention, the tensioning element is embodied as a rolled elastic cylindrical pin.

According to an embodiment of the invention, the tensioning element is embodied as a waist-shaped hole bayonet.

According to an embodiment of the present invention, the waist-shaped hole bayonet lock is composed of a connecting portion and elastic portions symmetrically disposed at two sides of the connecting portion, wherein an extending direction of the connecting portion is defined as an axial direction, inclined slope structures are symmetrically disposed at two ends of the elastic portion in the axial direction, the inclined slope structures extend from end portions to inner sides in a direction gradually away from the connecting portion, the inclined slope structures at any side protrude out of the elastic portion in a radial direction perpendicular to the axial direction, and portions of the waist-shaped hole bayonet lock between the inclined slope structures at the two ends are in interference fit with the tooth holder and the tooth sleeve.

According to an embodiment of the present invention, the interference fit between the tensioning member and the tooth holder and the tooth sleeve is 0.5mm to 1.0mm.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 is a schematic perspective view of a driving tooth block of a crawler-type engineering machine according to a preferred embodiment of the present application.

Fig. 2 shows a schematic diagram of an exploded structure of a driving tooth block of a crawler-type engineering machine according to a preferred embodiment of the present application.

Fig. 3 shows a schematic perspective view of the tooth sleeve in the present application.

Fig. 4 shows a schematic perspective view of the tension member in the present application.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the disclosure of the present specification, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1 to 4, a driving tooth block of a track type construction machine according to a preferred embodiment of the present invention will be described in detail below, wherein the driving tooth block of a track type construction machine includes a tooth holder 10, a tooth sleeve 20 and a tension member 30, wherein the tooth holder 10 is used for connecting a hub disc at an inner end by bolts, wherein the tooth sleeve 20 is correspondingly sleeved on an outer tooth portion 11 of the tooth holder 10, and the tension member 30 simultaneously penetrates and vertically connects the tooth sleeve 20 and the tooth holder 10 in an interference fit manner. In this way, when the crawler engineering machinery walks through the chain wheel driving chain, the driving tooth blocks outside the wheel hub disc of the chain wheel are continuously in extrusion friction fit with the pin sleeves of the chain track links on the chain track, once the tooth breakage phenomenon or the serious abrasion phenomenon occurs on one driving tooth block outside the wheel hub disc, the tooth sleeve 20 on the driving tooth block with broken teeth or serious abrasion can be directly removed and replaced, a new tooth sleeve 20 is installed, and the newly installed tooth sleeve 20 is connected with the tooth seat 10 through the tension piece 30 and then is installed on the wheel hub disc, so that the newly installed tooth sleeve and the other driving gears are matched together to normally drive the chain to travel, and therefore maintenance and replacement costs can be reduced; in addition, the tooth sleeve is replaced under the condition that the tooth holder 10 is not dismounted, so that the maintenance efficiency of the driving tooth block can be improved; in addition, the situation that only the tooth sleeve 20 is replaced can greatly reduce the resource waste compared with the situation that the whole driving tooth block is scrapped.

In one embodiment, the tension member 30 is implemented as an elastic tension pin, which is convenient to install and disassemble, and can ensure the stability of the assembly of the tooth holder 10 and the tooth sleeve 20.

Further preferably, the tooth holder 10 and the tooth sleeve 20 each extend in an arc shape with the center of the hub disk as the center, and the plurality of tensioning members 30 are located on the corresponding external tooth portion 11.

As a preferred embodiment, the tensioning member 30 is implemented as a rolled elastic cylindrical pin.

As another preferred embodiment, the tension member 30 is implemented as a waist-shaped Kong Kaxiao, and the corresponding waist-shaped holes 101 or oblong holes are correspondingly formed on the tooth holder 10 and the tooth sleeve 20, which are matched with the waist-shaped hole bayonet locks, so that the contact area between the tooth holder 10 and the tooth sleeve 20 and the tension member 30 can be increased to a certain extent, the assembly strength of the whole driving tooth block is further improved, and on the other hand, the waist-shaped holes can also play a role in fixing the angle, and the assembly tightness of the driving tooth block is ensured.

Still preferably, the waist-shaped hole bayonet lock is composed of a connecting portion 31 and elastic portions 32 symmetrically arranged at two sides of the connecting portion 31, wherein an extending direction of the connecting portion 31 is defined to be an axial direction, inclined slope structures 321 are symmetrically arranged at two ends of the elastic portions 32 in the axial direction, the inclined slope structures 321 extend from end portions to inner sides in a direction gradually far away from the connecting portion 31, and the inclined slope structures 321 at any side protrude out of the elastic portions 32 in a radial direction perpendicular to the axial direction, so that an elastic limiting effect can be formed at two ends after assembly, assembly stability of the driving tooth block can be improved under the condition that normal operation of the driving tooth block is not affected, and meanwhile portions of the waist-shaped hole bayonet lock between the inclined slope structures 321 at the two ends are in interference fit with the tooth seat 10 and the tooth sleeve 20.

In one embodiment, the amount of interference fit between the tension member 30 and the tooth holder 10 and the tooth sleeve 20 is 0.5mm to 1.0mm. Through a plurality of long-time tests, the service life of the tension member 30 and the interference fit between the tension member 30 and the waist-shaped hole have the following relationship: when the interference fit amount is 0.5mm, the service life of the tensioning piece 30 is 2800 hours; when the interference fit is 0.8mm, the service life of the tensioning piece 30 is 3000 hours; when the interference fit is 1.0mm, the service life of the tension member 30 is 3200 hours, and the service life of the tension member 30 is gradually increased with the increase of the interference fit within a certain range, but the extent of easy detachment of the tension member 30 when the new tooth cover 20 is replaced at a later stage is also required to be considered, and thus, the interference fit range is preferably 0.5mm to 1.0mm.

In addition, it should be noted that, for the driving tooth block, since the main friction damaged portion is the position of the tooth sleeve 20, the performance requirement that needs to be met by the tooth holder 10 is reduced, so that the detachable driving tooth block can reduce the performance requirement of the tooth holder 10 on the premise of having the advantages, further reduce the material cost of the tooth holder 10, and further reduce the cost of the whole driving tooth block.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims (7)

1. The crawler-type engineering machinery driving tooth block is characterized by comprising a tooth holder, a tooth sleeve and a tensioning piece, wherein the tooth holder is used for being connected with a hub disc through the inner side end, the tooth sleeve is correspondingly sleeved on an outer tooth part of the tooth holder, and the tensioning piece penetrates through and is vertically connected with the tooth sleeve in an interference fit mode.

2. The track type work machine drive tooth block as claimed in claim 1, wherein said tension member is embodied as an elastic tension pin.

3. The track-type engineering machine driving tooth block as claimed in claim 2, wherein the tooth base and the tooth sleeve are correspondingly and arcuately extended by taking the center of the hub disc as the center, and the plurality of tensioning members are positioned on the corresponding external tooth parts.

4. A track-type work machine drive tooth block as claimed in claim 3, wherein said tension member is embodied as a rolled elastic cylindrical pin.

5. A track-type work machine drive tooth block as claimed in claim 3, wherein said tension member is embodied as a waist-shaped hole bayonet.

6. The track-type engineering machine driving tooth block as claimed in claim 5, wherein the waist-shaped hole bayonet lock is composed of a connecting portion and elastic portions symmetrically arranged on two sides of the connecting portion, wherein an extending direction of the connecting portion is defined to be an axial direction, inclined slope structures are symmetrically arranged on two ends of the elastic portion in the axial direction, the inclined slope structures extend from end portions to inner sides in directions gradually far away from the connecting portion, the inclined slope structures on any side protrude out of the elastic portions in a radial direction perpendicular to the axial direction, and portions of the waist-shaped hole bayonet lock between the inclined slope structures on the two ends are in interference fit with the tooth holder and the tooth sleeve.

7. A track-type working machine driving tooth block as claimed in any one of claims 4 to 6, wherein the interference fit between said tension member and said tooth holder and said tooth cover is 0.5mm to 1.0mm.