CN214657331U

CN214657331U - Rotary quick-change connector for excavator

Info

Publication number: CN214657331U
Application number: CN202120649821.3U
Authority: CN
Inventors: 吴汉斌; 吕建忠; 陈卿雁
Original assignee: XIAMEN YULONG MACHINERY CO Ltd
Current assignee: XIAMEN YULONG MACHINERY CO Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-09
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a rotary quick-change connector for an excavator, which can comprise an upper connecting seat, a rotary component, a central rotary connector and a lower connector, wherein the upper connecting seat is fixed on the rotary component and is provided with a first pin hole, a second pin hole and a first central through hole which are used for connecting a bucket rod of the excavator; the rotary component is fixed on the lower connector and is provided with a second central through hole; the lower connector comprises a mounting seat, a first connecting claw and a second connecting claw which are arranged on the mounting seat, a third central through hole is formed in the mounting seat, and an oil cylinder is connected between the first connecting claw and the second connecting claw; the central swivel joint is fixed on the upper connecting seat and is received in the first central through hole, the second central through hole and the third central through hole which are coaxially aligned and communicated. The utility model discloses a quick change between the different equipment of being convenient for of aspect, on the other hand can 360 degrees rotations, and the different operations of equipment under operating condition in the convenience improve the operating efficiency greatly.

Description

Rotary quick-change connector for excavator

Technical Field

The utility model belongs to the excavator field specifically relates to a rotation type quick change coupler for excavator.

Background

An excavator is an earth moving machine which excavates materials higher or lower than a bearing surface by using a bucket and loads the materials into a transport vehicle or unloads the materials to a stockyard. The excavated materials mainly comprise soil, coal, silt, soil after pre-loosening and rock. In recent years, the development of construction machines is relatively fast, and the excavator becomes one of the most important types of construction machines in construction. One end of a quick-change connector of the excavator is connected with the front end of an arm of the excavator, the other end of the quick-change connector of the excavator is connected with the bucket, and the quick change among the bucket, the scarifier, the breaking hammer, the hydraulic shear and the like can be realized, so that the application range of the excavator is enlarged, the replacement operation time can be saved, and the work efficiency is improved.

CN202164643U discloses an excavator quick change coupler, it is including the connecting plate, two horn articulated connecting holes that are used for with the excavator are seted up at the connecting plate top, and the left and right sides of connecting plate bottom is equipped with left calliper, right calliper respectively, and left calliper is reverse and set up outwards respectively with the keeping silent of right calliper, and the top of left calliper articulates on the connecting plate, and right calliper is fixed on the connecting plate, is connected with the hydro-cylinder between left calliper and the right calliper. However, the quick change coupler of the excavator cannot rotate, and affects the working range of the working devices connected with the quick change coupler, such as a bucket, a ripper, a breaking hammer, a hydraulic shear and the like, thereby limiting the exertion of more functions of the excavator and reducing the labor productivity.

Disclosure of Invention

The utility model aims at providing a rotation type quick change coupler for excavator to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:

a rotary quick-change connector for an excavator can comprise an upper connecting seat, a rotary assembly, a central rotary connector and a lower connector, wherein the upper connecting seat is fixed on the rotary assembly and is provided with a first pin hole, a second pin hole and a first central through hole, and the first pin hole and the second pin hole are used for connecting a bucket rod of the excavator; the rotary component is fixed on the lower connector and is provided with a second central through hole; the lower connector comprises a mounting seat, and a first connecting claw and a second connecting claw which are arranged on the mounting seat, wherein a third central through hole is formed in the mounting seat, and an oil cylinder is connected between the first connecting claw and the second connecting claw, so that the first connecting claw and the second connecting claw can move relatively; the central swivel joint is fixed on the upper connecting seat and received in the first central through hole, the second central through hole and the third central through hole which are coaxially aligned and communicated, an upper oil pipe and a lower oil pipe are connected, the upper oil pipe is used for connecting an oil tank or a multi-way valve, and the lower oil pipe is used for connecting the oil cylinder.

Furthermore, the upper connecting seat is U-shaped and comprises a bottom plate and a pair of side plates welded on the bottom plate, the first central through hole is formed in the bottom plate, and the first pin hole and the second pin hole are respectively formed in two ends of the pair of side plates.

Further, the gyration subassembly includes hydraulic motor and gyration dish, hydraulic motor install on the gyration dish and with the gyration dish drive is connected, go up the connecting seat and the lower connector is fixed respectively in the upper and lower end of gyration dish for lower connector can carry out 360 degrees rotations for last connecting seat, the gyration dish is equipped with second central through-hole.

Further, a straight gear transmission or a worm gear transmission is adopted between the hydraulic motor and the rotary disc.

Further, a plurality of fixing holes are surrounded by the first central through hole and the second central through hole.

Further, the mount pad includes the roof and welds in the curb plate of roof, the roof is equipped with third central through-hole, first connecting claw fixed mounting be in the one end of curb plate, the second connecting claw passes through the round pin axle and rotationally installs the other end of curb plate.

Further, the first and second connection claws have semi-tubular first and second connection portions, respectively, and the opening directions thereof are opposite.

Furthermore, the connecting claw and the second connecting claw are respectively provided with a first pin shaft and a second pin shaft, the oil cylinder is fixed on the first pin shaft, and the telescopic rod of the oil cylinder is fixedly connected to the second pin shaft.

Furthermore, the second connecting claw further comprises a hook-shaped limiting part located above the second connecting part, and the limiting part is matched with a limiting pin shaft installed on the top plate to limit the rotation angle of the second connecting claw.

Further, the mounting seat further comprises a reinforcing side plate welded below the inner side of the side plate, and the first connecting claw is fixedly mounted on the reinforcing side plate.

The utility model adopts the above technical scheme, the beneficial effect who has is: the utility model discloses a quick change between the different equipment of being convenient for of aspect, on the other hand can 360 degrees rotations, and the different operations of equipment under operating condition in the convenience improve the operating efficiency greatly, reduce operating time.

Drawings

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Fig. 1 is a perspective view of a rotary quick-change coupler for an excavator according to the present invention;

fig. 2 is an exploded view of the rotary quick-change coupling shown in fig. 1;

fig. 3 is a front view of the rotary quick-change coupling shown in fig. 1, with curved portions removed to show internal construction;

fig. 4 is an exploded view of the lower connector of the rotary quick-change coupling shown in fig. 2.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-4, a rotary quick-change coupling for an excavator may comprise an upper coupling socket 1, a swivel assembly 2, a central swivel joint 3 and a lower connector 4. The upper connecting seat 1 is U-shaped and comprises a bottom plate 11 and a pair of side plates 12 welded on the bottom plate 11. The bottom plate 11 is fixed on the swiveling component 2, so that the upper connecting seat 1 and the lower connector can rotate relatively. The base plate 11 is provided with a first central through hole 111. The side plate 12 has first and

second pin holes

121 and 122 at both ends thereof. The first pin hole 121 is connected with a hole at the end of the excavator bucket rod through a pin, and the second pin hole 122 is connected with the connecting rod through a pin.

The swing assembly 2 may include a hydraulic motor 21 and a swing disk 22, the hydraulic motor 21 being mounted on the swing disk 22 and in driving connection with the swing disk 22. The hydraulic motor 21 and the rotary disc 22 can adopt a spur gear transmission or a worm gear transmission. The upper and lower connector holders 1 and 4 are fixed (e.g., by a plurality of bolts and nuts) to the upper and lower ends of the turn plate 22, respectively, such that the lower connector 4 can be rotated 360 degrees with respect to the upper connector holder 1. The rotary disk 22 is provided with a second central through hole 221, and the second central through hole 221 is coaxially aligned and communicated with the first central through hole 111. Preferably, the first central through hole 111 and the second central through hole 221 have the same diameter. The first and second center through holes 111 and 221 are surrounded by a plurality of fixing holes 112 and 222. The upper coupling holder 1 is fixed to the rotary plate 22 by passing bolts through the fixing holes 112 and 222 and tightening nuts.

The central swivel joint 3 is fixed on the upper connecting base 1 and received in the first central through hole 111, the second central through hole 221 and the third central through hole 4111 which are coaxially aligned and communicated, and is connected with an upper oil pipe for connecting an oil tank or a multi-way valve and a lower oil pipe for connecting the oil cylinder 44 of the lower connector 4. With the central swivel joint 3, the upper and lower oil pipes are not twisted together by 360 degrees of rotation of a working device (e.g., a bucket or a breaker, etc.) connected to the lower connector 4. The central swivel joint 3 is commercially available and its specific construction will not be described in detail here.

The lower connector 4 may include a mount 41, a first coupling claw 42, a second coupling claw 43, a cylinder 44, and the like. The mounting base 41 includes a top plate 411 and a side plate 412 welded to the top plate 411. The top plate 411 is fixed to the lower end of the rotary disk 22 and is provided with a third central through hole 4111, and the third central through hole 4111 is coaxially aligned and communicated with the second central through hole 221 so as to allow the central rotary joint 3 and the oil pipe thereof to be located. The first connecting claw 42 is fixedly installed at one end of the side plate 412, and the second connecting claw 43 is rotatably installed at the other end of the side plate 412 by a pin shaft 45. The oil cylinder 44 is connected between the first connecting claw 42 and the second connecting claw 43 so that the first connecting claw 42 and the second connecting claw 43 can move relatively. Specifically, the first connecting claw 42 and the second connecting claw 43 respectively have a first pin 422 and a second pin 432, and the oil cylinder 44 is fixed on the first pin 422 and the telescopic rod thereof is fixedly connected to the second pin 432. Through the telescopic movement of the oil cylinder 44, the second connecting claw 43 can rotate around the pin shaft 45, and further the distance between the first connecting claw 42 and the second connecting claw 43 is adjusted, so that the working devices such as a bucket or a breaking hammer of the excavator can be loosened or clamped.

The first and

second connection claws

42 and 43 have semi-tubular first and

second connection portions

421 and 431, respectively, and have opposite opening directions. During connection, the first connecting rod of the working device is firstly clamped into the first connecting part 421, then the second connecting rod of the working device slides into the second connecting part 431, and finally the oil cylinder 44 acts to rotate the second connecting claw 43 outwards, so that clamping and fixing of the working device are realized.

Preferably, the second connecting claw 43 further includes a hook-shaped limiting portion 433 located above the second connecting portion 431, and the limiting portion 433 cooperates with a limiting pin 46 installed on the top plate 411 to achieve the rotation angle limitation of the second connecting claw 43. The stopper 433 has a first stopper position a at a shorter upper end and a second stopper position B at a longer lower end with an opening facing downward. At the first limit position a the distance between the first and

second coupling claws

42, 43 is maximal and at the second limit position B the distance between the first and

second coupling claws

42, 43 is minimal.

In order to improve the connection strength, the mounting base 41 further includes a reinforcing side plate 413, and the reinforcing side plate 413 is welded to the lower inner side of the side plate 412. The first coupling claw 42 is fixedly mounted on the reinforcing side plate 413.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A rotary quick-change connector for an excavator is characterized by comprising an upper connecting seat, a rotary assembly, a central rotary connector and a lower connector, wherein the upper connecting seat is fixed on the rotary assembly and is provided with a first pin hole, a second pin hole and a first central through hole, and the first pin hole and the second pin hole are used for connecting a bucket rod of the excavator; the rotary component is fixed on the lower connector and is provided with a second central through hole; the lower connector comprises a mounting seat, and a first connecting claw and a second connecting claw which are arranged on the mounting seat, wherein a third central through hole is formed in the mounting seat, and an oil cylinder is connected between the first connecting claw and the second connecting claw, so that the first connecting claw and the second connecting claw can move relatively; the central swivel joint is fixed on the upper connecting seat and received in the first central through hole, the second central through hole and the third central through hole which are coaxially aligned and communicated, an upper oil pipe and a lower oil pipe are connected, the upper oil pipe is used for connecting an oil tank or a multi-way valve, and the lower oil pipe is used for connecting the oil cylinder.

2. The rotary quick-change coupler for an excavator according to claim 1, wherein the upper coupling seat has a U-shape and includes a bottom plate and a pair of side plates welded to the bottom plate, the first center through hole is formed in the bottom plate, and the first pin hole and the second pin hole are respectively formed at both ends of the pair of side plates.

3. The rotary quick-change coupler for an excavator according to claim 1, wherein the swivel assembly comprises a hydraulic motor and a swivel disc, the hydraulic motor is mounted on the swivel disc and is drivingly connected with the swivel disc, the upper coupling seat and the lower connector are respectively fixed to the upper and lower ends of the swivel disc so that the lower connector can rotate 360 degrees relative to the upper coupling seat, and the swivel disc is provided with the second central through hole.

4. A rotary quick-change coupling for excavators according to claim 3, characterized in that a spur gear drive or a worm gear drive is used between the hydraulic motor and the turret.

5. The rotary quick-change coupler for an excavator according to any one of claims 1 to 4, wherein the first central through hole and the second central through hole are surrounded by a plurality of fixing holes.

6. The rotary quick-change coupler for an excavator according to claim 1, wherein the mounting seat comprises a top plate and a side plate welded to the top plate, the top plate is provided with the third central through hole, the first connecting claw is fixedly mounted at one end of the side plate, and the second connecting claw is rotatably mounted at the other end of the side plate through a pin shaft.

7. The rotary quick-change coupler for an excavator according to claim 6, wherein the first coupling claw and the second coupling claw have semi-tubular first coupling portions and second coupling portions, respectively, and are opened in opposite directions.

8. The rotary quick-change coupler for an excavator according to claim 7, wherein the coupling claw and the second coupling claw have a first pin and a second pin, respectively, the cylinder being fixed to the first pin and the telescopic rod thereof being fixedly connected to the second pin.

9. The rotary quick-change coupler for an excavator according to claim 7, wherein the second coupling claw further comprises a hook-shaped stopper portion located above the second coupling portion, the stopper portion being engaged with a stopper pin mounted on the top plate to effect the rotational angle restriction of the second coupling claw.

10. The rotary quick-change coupler for an excavator according to claim 6, wherein the mounting block further comprises a reinforcing side plate welded to an underside of an inner side of the side plate, the first coupling claw being fixedly mounted to the reinforcing side plate.