CN211113823U

CN211113823U - Loader accessory quick change mechanism

Info

Publication number: CN211113823U
Application number: CN201921856680.1U
Authority: CN
Inventors: 李明国; 王超; 管瑞超; 朱彭辉; 刘虹
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-28
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a loader accessory quick change mechanism has solved prior art among the prior art and has had hydraulic pressure, automatically controlled or pneumatic additional driving system to drive round pin axle axial displacement and realize that the structure is complicated, problem with high costs. The utility model provides a loader accessory quick-change mechanism, which comprises an accessory and a quick-change mechanism block, wherein the quick-change mechanism block is driven by a loader power arm and is detachably connected with the accessory; the accessory is provided with three half-opened hinge holes distributed from top to bottom; the quick-change mechanism block is provided with three corresponding shafts which are matched with the holes; the second shaft is a half shaft, and a handle is arranged to form a switch gear. The utility model realizes that the quick change mechanism of the loader does not need to be added with a power system, and the quick change of the accessory can be realized through pure manual operation; the high-precision matching form of the hole shaft is adopted, the quick-change function is easily realized by manually rotating the switch gear, the reliability is high, and the operation is convenient; the setting of half division hinge hole position and opening direction does benefit to and carries out the quick change operation.

Description

Loader accessory quick change mechanism

Technical Field

The utility model relates to an engineering machine tool accessory field especially relates to a loader accessory quick change mechanism.

Background

Loader attachments refer to mechanisms at the front end of the machine for work, such as the bucket of a forklift. In the operation process of the loader, the loader attachment needs to be replaced according to different operation conditions, for example, a bucket with different specifications is replaced, or the bucket is replaced by other types of attachments such as a log grab.

At present, the quick change structure of the loader accessories at home and abroad is divided into: mechanical manual type and additional power type. The additional power resisting type is mainly divided into: hydraulic, electric, pneumatic, and the like. From the design and use cost of maintenance, the mechanical hand moving type has obvious advantages compared with the additional power type because the mechanical hand moving type realizes the quick change by a pure mechanical structure. However, due to the problems of poor machining precision, poor reliability, difficult quick-change operation and the like of various mechanical hand moving types in the current market, most manufacturers still adopt an additional power type accessory quick-change structure with higher cost.

The conventional accessory quick-change mechanism with additional power mainly comprises a left accessory, a right quick-change mechanism and additional power shown by dotted lines, wherein the accessory and the quick-change mechanism are quickly connected in ①②③ sequence, the ① is provided with the quick-change mechanism and a loader with the additional power and is close to the accessory, ② operates the loader to enable a pin shaft at A position on the quick-change mechanism to be hung in a hook at A position of the accessory, ③ operates the loader to enable the hole at B position of the accessory and the hole at B position of the quick-change mechanism to be overlapped, then the additional power is operated to push the pin shaft at B position to enable the accessory and the quick-change mechanism to be connected into a whole, and the accessory and the quick-change mechanism are disconnected in reverse sequence.

The inventor finds that the problems exist in that: an additional hydraulic, electric or pneumatic power system is required to drive the pin shaft at the position B to axially move so as to realize the assembly and combination of the quick-change mechanism and the accessory, and the structure is complex and the use and maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art and must have hydraulic pressure, automatically controlled or pneumatic additional driving system to drive round pin axle axial displacement and realize the not enough of quick change mechanism, provide a loader accessory quick change mechanism, save additional power structure to reduce the product and use cost of maintenance.

The specific scheme of the quick change mechanism of the loader accessory is as follows:

a quick change mechanism for an attachment of a loader comprises the attachment and a quick change mechanism block, wherein the quick change mechanism block is driven by a power arm of the loader and is detachably connected with the attachment; the accessory is characterized in that the rear end of the accessory is provided with an accessory connecting part, and the accessory connecting part is provided with a first half-open hinge hole, a second half-open hinge hole and a third half-open hinge hole which are distributed from top to bottom;

the quick-change mechanism block is provided with a first shaft, a second shaft and a third shaft, the outer diameter and the setting position of the first shaft are matched with the first half-open hinge hole, the outer diameter and the setting position of the second shaft are matched with the second half-open hinge hole, and the outer diameter and the setting position of the third shaft are matched with the third half-open hinge hole;

the second shaft and the quick-change mechanism block are rotatably arranged, a half shaft is arranged at the joint part of the second shaft and the second half-open hinge hole, one end of the second shaft is exposed and is provided with a handle perpendicular to the second shaft, and a switch gear is formed.

Further, the length of the half shaft is larger than that of the second half-opened hinge hole.

Furthermore, the tail end of the handle is provided with a knob which is perpendicular to the handle.

Furthermore, the first half-open hinge hole, the second half-open hinge hole and the third half-open hinge hole are arranged in an arc line, and the second half-open hinge hole is in a convex position of the arc line.

Furthermore, the accessory jointing part is of a convex structure, the quick-change block jointing part is of a groove-shaped structure, and the accessory jointing part can enter the groove of the quick-change mechanism block; the first shaft, the second shaft and the third shaft are horizontally arranged in the groove.

Furthermore, the first shaft and the third shaft are fixed shafts.

Further, the opening direction of the first half hinge hole is 45 degrees downward from the horizontal, the opening direction of the second half hinge hole is 75 degrees downward from the horizontal, and the opening direction of the third half hinge hole is horizontal.

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

1) the quick change mechanism of the loader does not need to be additionally provided with a power system, and the quick change of the accessories can be realized through purely manual mechanical operation.

2) The realization adopts the high-accuracy fit form of hole axle, and the handle of manual rocking switch fender easily realizes the quick change function, has high reliability, operates advantages such as lightly.

3) The setting mode of half division hinge hole position and opening direction does benefit to and carries out the quick change operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1, 2 and 3 are schematic diagrams of a structure and a quick-change process of a loader accessory block change mechanism in the prior art;

fig. 4, 5 and 6 are schematic diagrams of the structure and the quick-change process of the loader accessory block-changing mechanism of the present invention;

the quick-change mechanism comprises an accessory 1, a first half-open hinge hole 11, a second half-open hinge hole 12, a third half-open hinge hole 13, a quick-change mechanism 2, a first shaft 21, a second shaft 22, a third shaft 23 and a handle 3.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As described in the background of the invention, the prior art has shortcomings, and in order to solve the above technical problems, the present application provides an auxiliary device for monitoring and measuring vault settlement in a tunnel.

In the embodiment of the application, as shown in fig. 3 to 4, the quick-change mechanism for loader accessories comprises an accessory 1 and a quick-change mechanism block 2, wherein the quick-change mechanism block 2 is driven by a power arm of a loader and is detachably connected with the accessory 1.

Specifically, the rear end of the attachment 1 has an attachment engaging portion, i.e., an end facing the loader cab; the joint part of the accessory is of a convex structure and is provided with a first half-open hinge hole 11, a second half-open hinge hole 12 and a third half-open hinge hole 13 which are distributed from top to bottom; the quick change mechanism block 2 has a groove-like structure corresponding to the attachment engaging portion, and a first shaft 21, a second shaft 22, and a third shaft 23 are horizontally provided in the groove.

The positions and the diameters of the first shaft 21, the second shaft 22 and the third shaft 23 are matched with the first half-open hinge hole 11, the second half-open hinge hole 12 and the third half-open hinge hole 13 in a high-precision mode. The first shaft 21, the second shaft 22 and the third shaft 23 can be respectively clamped in the first half-open hinge hole 11, the second half-open hinge hole 12 and the third half-open hinge hole 13. The hole shaft has small high-precision fit clearance and small impact force.

The first half-open hinge hole, the second half-open hinge hole and the third half-open hinge hole are arranged on an arc line, and the second half-open hinge hole is in a protruding position, so that the installation is facilitated.

The first shaft 21 and the third shaft 23 are fixed on the quick-change mechanism block, and the second shaft 22 is rotatably arranged relative to the quick-change mechanism block. The tail end of one end of the second shaft 21 is exposed through the groove wall, a handle 3 vertical to the tail end is arranged at the tail end, and the 2 nd shaft can rotate by shaking the handle 3; the second shaft 22 is set as a half shaft at the joint part of the second half-open hinge hole, namely the section of the second shaft at the section is a semicircle, and the second shaft 22, the handle 3 and the second half-open hinge hole 21 are matched to form a switch gear. A knob perpendicular to the handle is provided at the distal end of the handle 3 to facilitate shaking of the handle 3.

The opening direction of the first half-open hinge hole is set to be 45 degrees downward from the horizontal, the opening direction of the second half-open hinge hole is 85 degrees downward from the horizontal, and the opening direction of the third half-open hinge hole is the horizontal direction. The arrangement of the angle aims to ensure the connection firmness even if the process of clamping the shaft on the quick change mechanism block and the half-open hinge hole on the accessory is realized.

The utility model discloses a working process:

first, as shown in fig. 4, the loader power arm is manipulated to bring the quick change mechanism block 2 close to the engaging portion of the attachment 1, so that the first shaft 21 is engaged in the first half hinge hole 11. At this time, the half-axis plane of the second shaft 22 faces upward, and the curved surface faces downward.

Then, as shown in fig. 4, the quick change mechanism block 2 is further advanced, and the half-axis plane of the second shaft 22 faces the first half-open hinge hole 12. While the third shaft 23 also snaps into the third semi-open hinge hole 13.

Finally, the handle 3 is rotated to enable the half-shaft curved surface of the second shaft 22 to be matched with the first half-open hinge hole 12, and the second shaft 22 is clamped into the first half-open hinge hole to achieve quick replacement and installation. At the moment, due to the matching of the shaft and the half-opened hinge hole, the directions of the vertical and horizontal movement of the quick change mechanism block are limited, and the locking and the fixing are realized.

Since the half-shaft curved surface of the second shaft 22 has a large force at the contact portion of the first half-opened hinge hole in the working state, and thus has a large friction force, the second shaft 22 does not slide axially or radially.

It can be seen that the half-shaft curved surface of the second shaft 22 is matched with the first half-open hinge hole 12 to form a switch gear, and when the half-shaft curved surface of the second shaft 22 is in the first half-open hinge hole 12, the accessory and the quick-change mechanism block are locked together and cannot be separated; conversely, when the half-shaft curved surface of the second shaft 22 is not in the first half-opened hinge hole 12, the accessory and the quick-change mechanism block can be separated. Compared with the traditional quick-change mechanism, the accessory can be quickly changed and installed without using auxiliary power.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and do not constitute limitations on the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A quick change mechanism for an attachment of a loader comprises the attachment and a quick change mechanism block, wherein the quick change mechanism block is driven by a power arm of the loader and is detachably connected with the attachment; the accessory is characterized in that the rear end of the accessory is provided with an accessory connecting part, and the accessory connecting part is provided with a first half-open hinge hole, a second half-open hinge hole and a third half-open hinge hole which are distributed from top to bottom;

2. The loader accessory quick-change mechanism of claim 1, wherein the half-shaft length is greater than the second half-open hinge bore length.

3. The quick change mechanism for loader attachments of claim 1 wherein a knob is provided at the distal end of the handle.

4. The quick-change mechanism for loader accessories of claim 1, wherein the first half hinge hole, the second half hinge hole and the third half hinge hole are arranged in an arc, and the second half hinge hole is in a convex position.

5. The loader attachment quick-change mechanism according to claim 4, wherein the attachment engaging portion is a protrusion structure, the quick-change block engaging portion is a groove-like structure, and the attachment engaging portion can enter the groove of the quick-change mechanism block; the first shaft, the second shaft and the third shaft are horizontally arranged in the groove.

6. The quick change mechanism for loader attachments of claim 5 wherein the first and third shafts are fixed shafts.

7. The quick-change mechanism for loader accessories of claim 4, wherein the opening direction of the first half hinge hole is 45 degrees downward from the horizontal, the opening direction of the second half hinge hole is 75 degrees downward from the horizontal, and the opening direction of the third half hinge hole is horizontal.