CN212866098U

CN212866098U - Novel trolley pivot damping mechanism and combined structure of pivot and trolley

Info

Publication number: CN212866098U
Application number: CN202021140808.7U
Authority: CN
Inventors: 陈宏远; 金丹; 阎鹏早; 王成军; 王志成
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-04-02
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to a novel platform truck pivot damper, establish two flexible axle sleeves on the pivot including the cover to and be located the isolation between two flexible axle sleeves and keep off the ring, keep off the ring cover and establish on the pivot, keep off the ring and have and be suitable for the first terminal surface that supports and lean on first flexible axle sleeve and be suitable for the second terminal surface that supports and lean on the flexible axle sleeve of second. The utility model also provides a integrated configuration of pivot and platform truck. The utility model discloses following beneficial effect has: the pivot box body of the trolley does not need oil injection maintenance because lubrication is not needed, so that maintenance points and maintenance cost are reduced; secondly, oil is not needed to be injected for maintenance, so that the problem of oil leakage of the trolley pivot box is successfully solved; finally, because the elastic material is added between the pivot and the trolley, the vibration of the main frame is reduced, the comfort of the whole machine is improved, and the whole service life is prolonged.

Description

Novel trolley pivot damping mechanism and combined structure of pivot and trolley

Technical Field

The utility model relates to a novel integrated configuration of platform truck pivot damper and pivot and platform truck belongs to bulldozer and makes technical field.

Background

The pivot is used as an important bearing part for connecting the main frame of the bulldozer and the trolley, one end of the pivot is fixed on the main frame, and the other end of the pivot is arranged on the trolley. The trolley can rotate around the pivot at a small angle.

The traditional structure is shown in figure 1, a pivot shaft 1 is arranged in a trolley body 2, shaft sleeves 8 and 9 are arranged between the pivot shaft 1 and the trolley body 2, two ends of the pivot shaft are sealed by a sealing ring 3 and a baffle plate 4 at one end, and an end cover 5 and an o-shaped ring 6 are sealed at the other end. The axial movement of the trolley body 2 is fixed by the end caps 7. The cavity 10 is filled with lubricating oil.

During the walking process of the bulldozer, the shaft sleeve 9 is abraded due to the rotation of the crawler belt relative to the axial direction of the pivot shaft and the radial direction of the pivot shaft, so that the sealing ring 3 is damaged, and oil leakage is caused.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, a novel trolley pivot damping mechanism and a combined structure of a pivot and a trolley are provided.

Novel platform truck pivot damper, its characterized in that: the flexible shaft sleeve comprises two flexible shaft sleeves and an isolation retaining ring, wherein the two flexible shaft sleeves are sleeved on a pivot, the isolation retaining ring is positioned between the two flexible shaft sleeves, the isolation retaining ring is sleeved on the pivot, and the isolation retaining ring is provided with a first end face and a second end face, the first end face is suitable for abutting against the first flexible shaft sleeve, and the second end face is suitable for abutting against the second flexible shaft sleeve.

Preferably, the flexible shaft sleeve comprises a rigid shaft sleeve body and an elastic sleeve sleeved outside the rigid shaft sleeve body.

Preferably, an adhesive or no adhesive is used between the rigid bushing body and the elastic bushing.

Preferably, the elastic sleeve is rubber.

Preferably, the outer wall of the elastic sleeve is uniformly provided with grooves arranged along the axial direction of the elastic sleeve, and partial reserved space is provided for the elastic sleeve to be extruded and deformed.

Preferably, the elastic sleeve is a nitrile rubber elastic sleeve.

Preferably, the rigid bushing body is an interference fit with the pivot shaft.

The utility model also provides a composite construction of pivot and platform truck, including pivot, platform truck body and foretell novel platform truck pivot damper, novel platform truck pivot damper cover is established in the one end of pivot, and novel platform truck pivot damper installs at the platform truck internally, the main frame is impressed to the other end of pivot, is connected with the main frame interference.

Preferably, the trolley body comprises a trolley and an upper cover plate, the upper cover plate is detachably mounted on the trolley, concave parts for mutual splicing to form a cylindrical inner cavity are arranged on the trolley and the upper cover plate, the two flexible shaft sleeves and the isolation baffle ring are mounted in the cylindrical inner cavity, and the elastic sleeves of the flexible shaft sleeves and the cylindrical inner cavity are in interference fit. The installation is convenient, the elastic sleeve is extruded through the matching of the trolley and the upper cover plate, so that the rigid shaft sleeve body is tightly attached to the outer wall of the pivot, and the inner ring and the outer ring of the elastic sleeve are respectively tightly attached to the outer wall of the rigid shaft sleeve body and the cylindrical inner cavity.

Preferably, the outer wall of the middle part of the isolation baffle ring is integrally provided with a positioning ring, the middle part of the cylindrical inner cavity is provided with a positioning groove matched with the positioning ring, and the positioning ring is embedded into the positioning groove. Prevent the flexible shaft sleeve from moving transversely.

Preferably, a left baffle is removably mounted to an end of the pivot shaft, the left baffle having an inboard end face adapted to abut the first flexible sleeve. Prevent the flexible shaft sleeve from moving transversely.

Preferably, the main frame further comprises a right pad ring sleeved on the pivot, and the right pad ring is provided with a left end face suitable for abutting against the second flexible shaft sleeve and a right end face suitable for abutting against the main frame. Preventing the flexible shaft sleeve 3 from moving transversely.

Novel integrated configuration of platform truck pivot damper and pivot and platform truck, remove original metal axle sleeve, use two flexible axle sleeves, it is fixed with keeping apart the retaining ring in the middle of two flexible axle sleeves, also can push down on flexible axle sleeve both sides with left side baffle and holding ring in addition and prevent the horizontal drunkenness of flexible axle sleeve. Compared with the prior art, the utility model discloses following beneficial effect has:

because the trolley can rotate around a small angle (less than 3 degrees) of the pivot, the metal shaft sleeve and the pivot in the traditional structure can rotate, and therefore lubrication oil is needed for lubrication, but the utility model discloses do not move relatively between pivot and rigid shaft sleeve body, the force of the relative rotation of trolley and pivot acts on the elastic sleeve, so that the elastic sleeve deforms, and the trolley can rotate around a small angle (less than 3 degrees) of the pivot, and because lubrication is not needed, the pivot box body of the trolley does not need oil injection maintenance, thereby reducing maintenance points and maintenance cost; secondly, oil is not needed to be injected for maintenance, so that the problem of oil leakage of the trolley pivot box is successfully solved; finally, because the elastic material is added between the pivot and the trolley, the vibration of the main frame is reduced, the comfort of the whole machine is improved, and the whole service life is prolonged.

Drawings

FIG. 1 is a schematic structural view of a conventional trolley assembly;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an exploded view of the present invention;

FIG. 4 is an enlarged view of the upper cover plate;

in the figure: 1. the device comprises a trolley 2, a pivot 3, a flexible shaft sleeve 3.1, a rigid shaft sleeve body 3.2, an elastic sleeve 4, an isolation baffle ring 5, an upper cover plate 6, a left baffle 7, a right backing ring 8 and a positioning ring.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Examples

As shown in fig. 2, fig. 3 and fig. 4, the novel damping mechanism for the trolley pivot comprises two flexible shaft sleeves 3 sleeved on the pivot 2 and an isolation baffle ring 4 positioned between the two flexible shaft sleeves 3, wherein the isolation baffle ring 4 is sleeved on the pivot 2, and the isolation baffle ring 4 has a first end surface adapted to abut against the first flexible shaft sleeve and a second end surface adapted to abut against the second flexible shaft sleeve.

In this embodiment, the flexible shaft sleeve 3 includes a rigid shaft sleeve body 3.1 and an elastic sleeve 3.2 sleeved outside the rigid shaft sleeve body 3.1; the elastic sleeve 3.2 is made of rubber; the outer wall of the elastic sleeve 3.2 is uniformly provided with grooves which are arranged along the axial direction; the elastic sleeve 3.2 is a nitrile rubber elastic sleeve; the rigid shaft sleeve body 3.1 is in interference fit with the pivot 2.

The utility model also discloses a combined structure of the pivot and the trolley, which comprises a pivot 2, a trolley body and the novel trolley pivot damping mechanism, wherein the novel trolley pivot damping mechanism is sleeved at one end of the pivot 2, the novel trolley pivot damping mechanism is arranged in the trolley body, and the other end of the pivot 2 is pressed into the main frame and is in interference connection with the main frame; the trolley body comprises a trolley 1 and an upper cover plate 5, the upper cover plate 5 is detachably mounted on the trolley 1, concave parts which are mutually spliced to form a cylindrical inner cavity are arranged on the trolley 1 and the upper cover plate 5, the two flexible shaft sleeves 3 and the isolation baffle ring 4 are mounted in the cylindrical inner cavity, and the elastic sleeves 3.2 of the flexible shaft sleeves 3 are in interference fit with the cylindrical inner cavity; a positioning ring 8 is integrally arranged on the outer wall of the middle part of the isolation baffle ring 4, a positioning groove matched with the positioning ring 8 is formed in the middle part of the cylindrical inner cavity, and the positioning ring 8 is embedded into the positioning groove; a left baffle 6 is detachably arranged at the end part of the pivot 2, and the left baffle 6 is provided with an inner side end face which is suitable for abutting against the first flexible shaft sleeve; the hinge device further comprises a right side backing ring 7 sleeved on the pivot shaft 2, wherein the right side backing ring 7 is provided with a left side end face suitable for abutting against the second flexible shaft sleeve and a right side end face suitable for abutting against the main frame.

The utility model discloses a theory of operation: the flexible shaft sleeve 3 and the isolation baffle ring 4 are sleeved on the pivot 2, the isolation baffle ring 4 is provided with a first end face suitable for abutting against a first flexible shaft sleeve and a second end face suitable for abutting against a second flexible shaft sleeve, the flexible shaft sleeve 3 and the isolation baffle ring 4 are simultaneously placed in a hollow part of the trolley 1, the upper cover plate 5 is fixed on the trolley 1 through bolts, the trolley 1 and the upper cover plate 5 are respectively provided with a hollow part used for being spliced with each other to form a cylindrical inner cavity, the two flexible shaft sleeves 3 and the isolation baffle ring 4 are both arranged in the cylindrical inner cavity, in addition, the elastic sleeve 3.2 of the flexible shaft sleeve 3 is in interference fit with the cylindrical inner cavity, the elastic sleeve 3.2 is extruded through the matching of the trolley 1 and the upper cover plate 5, so that the rigid shaft sleeve body 3.1 is tightly attached to the outer wall of the pivot 2, the inner ring and the outer ring of the elastic sleeve 3.2 are respectively tightly attached to the outer wall and the cylindrical inner cavity of the rigid shaft, and the flexible shaft sleeve is in interference connection with the main frame, and in addition, a left baffle and a positioning ring can be used for pressing the two sides of the flexible shaft sleeve to prevent the flexible shaft sleeve 3 from moving transversely.

Interpretation of related terms:

a bulldozer: a bulldozer is an earthwork machine capable of excavating, transporting and discarding rock soil.

A trolley: the trolley is an important part of the walking part of the bulldozer coupling transmission.

Pivot: a shaft coupling the bulldozer frame and the dolly.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel platform truck pivot damper which characterized in that: the flexible shaft sleeve structure comprises two flexible shaft sleeves (3) sleeved on a pivot (2) and an isolation baffle ring (4) located between the two flexible shaft sleeves (3), wherein the isolation baffle ring (4) is sleeved on the pivot (2), and the isolation baffle ring (4) is provided with a first end face suitable for abutting against the first flexible shaft sleeve and a second end face suitable for abutting against the second flexible shaft sleeve.

2. The novel trolley pivot shock absorbing mechanism of claim 1, further comprising: the flexible shaft sleeve (3) comprises a rigid shaft sleeve body (3.1) and an elastic sleeve (3.2) sleeved outside the rigid shaft sleeve body (3.1).

3. The novel trolley pivot shock absorbing mechanism of claim 2, further comprising: the elastic sleeve (3.2) is made of rubber.

4. The novel trolley pivot shock absorbing mechanism of claim 3, further comprising: the rigid shaft sleeve body (3.1) is in interference fit with the pivot (2).

5. The utility model provides a combined structure of pivot and platform truck which characterized in that: the novel trolley pivot damping mechanism comprises a pivot (2), a trolley body and the novel trolley pivot damping mechanism according to any one of claims 1 to 4, wherein the novel trolley pivot damping mechanism is sleeved at one end of the pivot (2), the novel trolley pivot damping mechanism is installed in the trolley body, and the other end of the pivot (2) is pressed into a main frame and is in interference connection with the main frame.

6. The pivot and trolley combination as defined in claim 5, wherein: the trolley body comprises a trolley (1) and an upper cover plate (5), the upper cover plate (5) is detachably mounted on the trolley (1), concave parts which are used for being mutually spliced to form a cylindrical inner cavity are arranged on the trolley (1) and the upper cover plate (5), two flexible shaft sleeves (3) and a separation baffle ring (4) are mounted in the cylindrical inner cavity, and the elastic sleeves (3.2) of the flexible shaft sleeves (3) are in interference fit with the cylindrical inner cavity.

7. The pivot and trolley combination as defined in claim 6, wherein: keep apart and be provided with holding ring (8) on the middle part outer wall of fender ring (4) an organic whole, the middle part of cylindrical inner chamber has the constant head tank with holding ring (8) matched with, in holding ring (8) embedding constant head tank.

8. The pivot and trolley combination as defined in claim 7, wherein: the end part of the pivot (2) is detachably provided with a left baffle (6), and the left baffle (6) is provided with an inner side end face which is suitable for abutting against the first flexible shaft sleeve.

9. The pivot and trolley combination as defined in claim 8, wherein: the hinge mechanism further comprises a right side backing ring (7) sleeved on the pivot (2), wherein the right side backing ring (7) is provided with a left side end face suitable for abutting against the second flexible shaft sleeve and a right side end face suitable for abutting against the main frame.