CN219586809U - Bucket quick-change device for excavator and excavator - Google Patents

Abstract

The utility model provides a bucket quick-change device for an excavator and the excavator, wherein the bucket quick-change device comprises: the first end of the connecting seat is used for being connected with a bucket rod of the excavator, and the bottom of the second end of the connecting seat is provided with a first clamping groove; the clamping hook assembly comprises a fixed clamping hook and a movable clamping hook, the fixed clamping hook is fixed on the connecting seat, a first end of the fixed clamping hook is provided with a second clamping groove for installing a front shaft of the bucket, a first end of the movable clamping hook is hinged with a second end of the fixed clamping hook, a second end of the movable clamping hook is provided with a hook shaft, the hook shaft can be positioned in the first clamping groove by rotating the movable clamping hook, and a third clamping groove for installing a rear shaft of the bucket is formed in the bottom of the movable clamping hook; and the first end of the limiting component is hinged with the connecting seat, the bottom of the second end of the limiting component is provided with a limiting clamping groove, and the limiting clamping groove can be rotated to lock the hook shaft in the first clamping groove. The quick-change device of the excavator bucket is high in safety, simple in structure and low in cost.

Description

Bucket quick-change device for excavator and excavator

Technical Field

The utility model relates to the technical field of excavators, in particular to a bucket quick-changing device for an excavator and the excavator.

Background

An excavator, also called an excavator, is an earth machine which uses a bucket to excavate materials higher or lower than a bearing surface and is installed in a transport vehicle or unloaded to a storage yard, and the excavator consists of a power device, a working device, a slewing mechanism, an operating mechanism, a transmission mechanism, a travelling mechanism and other structures. In recent years, with the development of engineering machinery, the application of mini-excavators is becoming more and more widespread, and the mini-excavators play a great role in agriculture, industry, municipal engineering, garden construction and the like. In order to meet the requirements of different operations, the mini-excavator needs to frequently replace different accessories in the construction operation process.

At present, the connection of the excavator accessory and the excavator body of the mini excavator is mainly realized by the following two modes: mechanical connection or hydraulic quick-change device connection. For the mechanical connection mode, the attachment and the excavator body are connected through a screw rod or a bolt, namely, when the excavator attachment is detached or installed, the attachment is manually operated by aid of auxiliary tools such as a wrench; although the connection between the accessory and the excavator body can be realized, the operation is troublesome, the replacement efficiency of the accessory is low, and the screw rod or the bolt is easy to fail along with the increase of the working time of the accessory, so that a certain potential safety hazard exists. For the hydraulic quick-change device, because the hydraulic oil way is arranged in the hydraulic quick-change device, the hydraulic quick-change device has the advantages of complex structure, high failure rate and high cost, and the risk of unhooking of the accessory caused by misoperation of an oil way switch by personnel. Therefore, how to provide a bucket quick-changing device with high safety, simple structure and low cost is a technical problem to be solved.

Disclosure of Invention

In view of the above, the present utility model provides a bucket quick-change device for an excavator and an excavator, which solve one or more technical problems of the prior art.

According to an aspect of the present utility model, there is disclosed a bucket quick-change apparatus for an excavator, the bucket quick-change apparatus including:

the first end of the connecting seat is used for being connected with a bucket rod of the excavator, and the bottom of the second end of the connecting seat is provided with a first clamping groove;

the clamping hook assembly comprises a fixed clamping hook and a movable clamping hook, the fixed clamping hook is fixed on the connecting seat, a second clamping groove for installing a front shaft of the bucket is formed in the first end of the fixed clamping hook, the first end of the movable clamping hook is hinged to the second end of the fixed clamping hook, a hook shaft is arranged at the second end of the movable clamping hook, the hook shaft can be located in the first clamping groove by rotating the movable clamping hook, and a third clamping groove for installing a rear shaft of the bucket is formed in the bottom of the movable clamping hook;

and the first end of the limiting component is hinged with the connecting seat, the bottom of the second end of the limiting component is provided with a limiting clamping groove, and the limiting clamping groove can be rotated to lock the hook shaft in the first clamping groove.

In some embodiments of the utility model, the second end of the limiting member is further provided with a handle bar.

In some embodiments of the utility model, the connector comprises two symmetrically arranged connector plates, and the limiting component is located between the two connector plates.

In some embodiments of the present utility model, the limiting component includes an elastic component and a top bead, the top bead is located at an end of the elastic component, the connecting plate is provided with an upper limiting hole and a lower limiting hole, and the top bead is located in the lower limiting hole when the limiting clamping groove locks the hook shaft in the first clamping groove.

In some embodiments of the present utility model, the limiting component includes two side plates disposed at intervals, the elastic component is located between the two side plates, a top bead via hole is disposed on the side plates, and the top bead is located in the top bead via hole.

In some embodiments of the utility model, the resilient member is a spring.

In some embodiments of the present utility model, the quick-change device for a bucket further includes a safety pin, and corresponding positions of the connection base, the movable hook, and the limiting member are provided with a safety pin through hole, and when the limiting slot locks the hook shaft in the first slot, the safety pin is located in the safety pin through hole.

In some embodiments of the present utility model, a fourth slot is provided at a position of the fixed hook corresponding to the third slot of the movable hook, and when the limiting slot locks the hook shaft in the first slot, a slot direction of the third slot is different from a slot direction of the fourth slot.

In some embodiments of the present utility model, when the limiting slot locks the hook shaft in the first slot, a slot direction of the third slot and a slot direction of the fourth slot are perpendicular to each other.

According to another aspect of the present utility model, there is also disclosed an excavator including a bucket quick change apparatus as described in any one of the embodiments above.

By utilizing the bucket quick-change device for the excavator and the excavator, disclosed by the embodiment of the utility model, the beneficial effects can be obtained at least in the following ways:

this a movable pothook for excavator's bucket quick change device can realize the connection and the separation of its couple axle and the first draw-in groove of connecting seat through rotating to this bucket quick change device still has spacing part, can make the spacing draw-in groove on it lock the couple axle in first draw-in groove through rotating this spacing part, has prevented the pine of movable pothook, has ensured the security of accessory. When the bucket attachment is replaced, the bucket can be quickly installed and detached by rotating the operation limiting component, and the installation tool or the hydraulic system is not needed, so that the bucket quick-change device is high in safety, simple in structure, easy to operate and low in cost.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present utility model are not limited to the above-described specific ones, and that the above and other objects that can be achieved with the present utility model will be more clearly understood from the following detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and together with the description serve to explain the utility model. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model. Corresponding parts in the drawings may be exaggerated, i.e. made larger relative to other parts in an exemplary device actually manufactured according to the present utility model, for convenience in showing and describing some parts of the present utility model. In the drawings:

fig. 1 is a schematic view showing a construction of a first state of a bucket quick-change apparatus for an excavator according to an embodiment of the present utility model.

Fig. 2 is a schematic view showing a construction of a second state of a bucket quick-change apparatus for an excavator according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a limiting member of a quick-change device for a bucket according to an embodiment of the utility model.

Fig. 4 is a schematic structural diagram of a connecting plate according to an embodiment of the utility model.

FIG. 5 is a view showing a usage state of the quick-change device for a bucket according to an embodiment of the present utility model.

FIG. 6 is a schematic view showing a first connection state of a quick-change device for a bucket according to an embodiment of the utility model.

FIG. 7 is a schematic view showing a second connection state of the quick-change device of the bucket and the bucket according to an embodiment of the utility model.

Reference numerals:

first clamping groove 120 fixed clamping hook 200 movable clamping hook 300 second clamping groove 210 hook shaft 310 third clamping groove 320 limit clamping groove 410 handle bar 420 connecting plate 110 spring 430 top bead 450 upper limit position limit 111 lower limit position limit 112 side plate 440 safety pin 500 safety pin through hole 510 fourth clamping groove 330 bucket 610 push rod 620 front shaft 710 rear shaft 720 bucket 800

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present utility model and their descriptions herein are for the purpose of explaining the present utility model, but are not to be construed as limiting the utility model.

It should be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details not greatly related to the present utility model are omitted.

It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

Here, it should be further noted that, in the present specification, the term of orientation appears in relation to the direction of position shown in the drawings; the term "coupled", unless expressly stated otherwise, may refer not only to a direct connection, but also to an indirect connection in the presence of an intermediate. The direct connection is that the two parts are connected without intermediate parts, and the indirect connection is that the two parts are connected with other parts.

Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. In the drawings, like reference numerals refer to the same or similar parts.

Fig. 1 is a schematic structural view of a first state of a bucket quick-change device for an excavator according to an embodiment of the present utility model, fig. 2 is a schematic structural view of a second state of the bucket quick-change device for an excavator according to an embodiment of the present utility model, the state shown in fig. 1 corresponds to a state in which a hook shaft 310 of a movable hook 300 is locked in a first clamping groove 120 of a connection base by a limiting clamping groove of a limiting member (also may be understood as a state in which a bucket 800 is mounted in place), and the state shown in fig. 2 is a state in which the hook shaft 310 of the movable hook 300 is not locked in the first clamping groove 120 of the connection base by the limiting clamping groove of the limiting member (also may be understood as a state in which the bucket 800 is not mounted in place).

As shown in fig. 1 and 2, the quick-change device for the bucket at least comprises a connecting seat, a clamping hook component and a limiting component. The first end of the connecting seat is used for being connected with the bucket rod 610 of the excavator, and the bottom of the second end of the connecting seat is provided with a first clamping groove 120. The hook component comprises a fixed hook 200 and a movable hook 300, the fixed hook 200 is fixed on the connecting seat, a first end of the fixed hook 200 is provided with a second clamping groove 210 for installing a front shaft 710 of the bucket 800, a first end of the movable hook 300 is hinged with a second end of the fixed hook 200, a second end of the movable hook 300 is provided with a hook shaft 310, the movable hook is rotated to enable the hook shaft 310 to be positioned in the first clamping groove 120, and a third clamping groove 320 for installing a rear shaft 720 of the bucket 800 is arranged at the bottom of the movable hook. The first end of the limiting component is hinged with the connecting seat, the bottom of the second end of the limiting component is provided with a limiting clamping groove 410, and the limiting component can be rotated to enable the limiting clamping groove to lock the hook shaft 310 in the first clamping groove 120. In fig. 1 and 2, the first end of the connecting seat, the first end of the limiting component, the first end of the fixed hook 200, and the first end of the movable hook 300 are all illustrated as left ends, and the second ends are all illustrated as right ends.

In this embodiment, the limiting member serves as a locking member of the movable hook 300, which can be locked and released by a rotating operation of the movable hook 300, thereby enabling rapid installation and removal of the bucket 800. For example, when the state of the bucket quick-change device shown in fig. 2 is changed to the state of the bucket quick-change device shown in fig. 1, the movable hook 300 is directly rotated counterclockwise until the hook shaft 310 is located in the first clamping groove 120, and then the right end of the limiting member is pressed, so that the limiting member is rotated clockwise by a certain angle until the limiting clamping groove 410 of the limiting member is clamped on the hook shaft 310 of the movable hook 300. In the state of the bucket quick change device shown in fig. 1, the limit catch 410 of the limit member prevents the hook shaft from being released from the first catch 120 by being caught on the hook shaft 310. Similarly, when the state of the bucket quick-change device shown in fig. 1 is changed to the state of the bucket quick-change device shown in fig. 2, the limiting member is rotated counterclockwise first, the limiting slot 410 of the limiting member is separated from the hook shaft 310, and at this time, the hook shaft 310 is not limited by the limiting slot 410, so that the movable hook 300 is rotated clockwise to change to the state shown in fig. 2. In addition, since the hook shaft 310 gradually enters the first clamping groove 120 along with the counterclockwise rotation of the movable hook 300, and the limiting clamping groove 410 on the limiting component gradually clamps the hook shaft 310 along with the clockwise rotation of the limiting component, the first clamping groove 120 and the limiting clamping groove 410 are both obliquely arranged clamping grooves, and in the locked state of the movable hook 300, the opening direction of the first clamping groove 120 and the opening direction of the limiting clamping groove 410 are different.

Further, the second end of the limiting member is further provided with a handle bar 420. Referring to fig. 1, a handle lever is positioned at the right end of a limiting member, and the limiting member can be manipulated by manipulating the handle lever when the limiting member is rotated.

In some embodiments of the present utility model, the connector comprises two symmetrically arranged connector plates 110, and the limiting member is located between the two connector plates 110. The two connecting plates 110 are arranged at intervals, the left ends of the two connecting plates 110 are fixedly connected through a connecting shaft, and in order to further realize the fixed connection between the connecting seat and the bucket rod 610, the right end part of the bucket rod 610 can be directly connected with the connecting shaft between the two connecting plates 110. It will be appreciated that the connection between the two connection plates 110 by the connection shaft is only a preferred connection, and in other embodiments, the connection plates 110 may be connected by other connection methods. Further, in order to further enhance the strength of the connection seat, the connection seat further includes a bottom plate, the bottom plate is disposed at the bottoms of the two connection plates 110, and the bottom plate is fixedly connected with the two connection plates 110, and exemplary, the bottom plate and the connection plates 110 can be fixedly connected by adopting a welding manner.

In one embodiment, the limiting member includes an elastic member and a top bead 450, the top bead 450 is located at an end of the elastic member, the connecting plate 110 has an upper limiting hole 111 and a lower limiting hole 112, and when the limiting slot locks the hook shaft 310 in the first slot 120, the top bead 450 is located in the lower limiting hole 112. Referring to fig. 4, two limiting holes are provided at positions of the connecting plate 110 near the first clamping groove 120, a certain distance is provided between the two limiting holes, the two limiting holes are respectively used as top holes of the top beads 450 in two states of locking the movable clamping hook or releasing the movable clamping hook 300 by the limiting component, when the movable clamping hook 300 is locked by the limiting component, the top beads 450 on the limiting component are positioned in the lower limiting holes 112, and when the movable clamping hook 300 is released by the limiting component, the top beads 450 on the limiting component are positioned in the upper limiting holes 111.

Fig. 3 is a schematic structural diagram of a limiting component of a bucket quick-change device according to an embodiment of the present utility model, referring to fig. 3, the limiting component may include two side plates 440 disposed at intervals, the elastic component is located between the two side plates 440, a top bead via hole is disposed on the side plates 440, and the top bead 450 is located in the top bead via hole. The two side plates 440 are symmetrically arranged, the left ends of the two side plates 440 can be connected through a connecting shaft, the axis of the elastic component is perpendicular to the two side plates 440, the two ends of the elastic component are respectively provided with a top bead 450, the two top beads 450 are respectively positioned in the top bead through holes of the two side plates 440, and at least half parts of the two top beads 450 are respectively positioned outside the two side plates 440.

For example, the elastic member may be a spring 430, where two top beads 450 are respectively located at two ends of the spring 430, when the top beads 450 move from the lower limit hole 112 to the upper limit hole 111 on the connecting plate 110, the spring 430 is compressed under the action of the top beads 450, and when the top beads 450 are located in the lower limit hole 112 or the upper limit hole 111, the spring 430 automatically returns to the original state. As can be seen from fig. 3, the bottom of the right ends of the two side plates 440 are respectively provided with a limiting slot 410, and the limiting slots 410 are located on the right side of the elastic component.

In an embodiment, the quick-change device of the bucket further includes a safety pin 500, and the corresponding positions of the connecting seat, the movable hook 300 and the limiting component are all provided with a safety pin through hole 510, and when the limiting slot locks the hook shaft 310 in the first slot 120, the safety pin 500 is located in the safety pin through hole 510. In this embodiment, the safety pin 500 is provided, and the safety pin 500 connects the connecting seat, the movable hook 300 and the limiting component into a whole, so that the movable hook 300 is further locked by the safety pin 500 for secondary locking protection after being locked by the limiting component.

Further, a fourth clamping groove 330 is provided at a position of the fixed hook 200 corresponding to the third clamping groove 320 of the movable hook 300, and when the limiting clamping groove locks the hook shaft 310 in the first clamping groove 120, a notch direction of the third clamping groove 320 is different from a notch direction of the fourth clamping groove 330; in this embodiment, the rear axle of the bucket positioned in the third clamping groove 320 is limited by the fourth clamping groove 330 having a direction different from that of the notch of the third clamping groove 320, so as to prevent the rear axle of the bucket from being released from the third clamping groove 320. Optionally, when the limiting slot locks the hook shaft 310 in the first slot 120, the notch direction of the third slot 320 and the notch direction of the fourth slot 330 are perpendicular to each other. It is understood that the arrangement of the notch direction of the third slot 320 and the notch direction of the fourth slot 330 perpendicular to each other is only a preferred embodiment, and in addition, the angle between the notch direction of the third slot 320 and the notch direction of the fourth slot 330 may be other, so long as the fourth slot 330 can prevent the rear axle of the bucket from falling out from the third slot 320 when the rear axle of the bucket is located in the third slot 320.

When the bucket 800 is connected to the excavator body based on the bucket quick change device disclosed in the above embodiments, referring to fig. 5, 6 and 7, firstly, the connection base and the limiting member of the bucket quick change device are connected to the stick 610 and the push rod 620 of the excavator, respectively; for example, the arm 610 of the excavator may be connected to a connection shaft for connecting the two connection plates 110, and the push rod 620 of the excavator may be connected to a connection shaft for connecting the two side plates 440, and at this time, the top bead 450 on the limiting member is positioned in the upper limiting hole 111 of the connection base, in which state the movable hook 300 is in a naturally drooping state. Further, the front shaft 710 of the bucket 800 is disposed in the second clamping groove 210 of the fixed clamping hook 200, so that the second clamping groove 210 hooks the front shaft 710 of the bucket 800, and then the bucket rod 610 is operated, so that the bucket 800 rotates counterclockwise as shown in fig. 6 until the rear shaft 720 of the bucket 800 is located in the third clamping groove 320 of the movable clamping hook, and the bucket 800 further rotates counterclockwise, and under the lifting action of the bucket 800, the hook shaft 310 of the movable clamping hook 300 gradually enters the first clamping groove 120 of the connecting seat. Further, the hand push rod 620 holding the limiting member pushes the limiting member downwards until the top bead 450 of the limiting member is located in the lower limiting hole 112 of the connecting seat, the limiting clamping groove 410 of the limiting member is clamped on the hook shaft 310 of the movable clamping hook 300, the movable clamping hook 300 is locked at this time, and then the bucket 800 is correspondingly connected to the bucket quick-change device. Finally, the safety pin 500 is inserted into the safety pin through hole.

Correspondingly, the utility model also discloses an excavator, which comprises the bucket quick-change device according to any embodiment.

According to the embodiment, the quick-change device for the excavator bucket disclosed by the utility model is simple in structure and convenient to operate, and the movable hook is locked through the limiting component, so that the movable hook after being locked is firmer and safer by the mechanical locking mode. In addition, when the excavator bucket is assembled and disassembled, the operation can be completed without tools such as a spanner, and the replacement efficiency of the excavator bucket is greatly improved; in addition to the above, the bucket quick change device does not need to adopt a hydraulic transmission mechanism, thereby reducing cost and failure rate.

In this disclosure, features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

While the foregoing has shown and described the basic underlying principles and features of the utility model, it is to be understood that the utility model is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the utility model as defined in the appended claims.

Claims (10)

1. A bucket quick change device for an excavator, the bucket quick change device comprising:

the first end of the connecting seat is used for being connected with a bucket rod of the excavator, and the bottom of the second end of the connecting seat is provided with a first clamping groove;

the clamping hook assembly comprises a fixed clamping hook and a movable clamping hook, the fixed clamping hook is fixed on the connecting seat, a second clamping groove for installing a front shaft of the bucket is formed in the first end of the fixed clamping hook, the first end of the movable clamping hook is hinged to the second end of the fixed clamping hook, a hook shaft is arranged at the second end of the movable clamping hook, the hook shaft can be located in the first clamping groove by rotating the movable clamping hook, and a third clamping groove for installing a rear shaft of the bucket is formed in the bottom of the movable clamping hook;

and the first end of the limiting component is hinged with the connecting seat, the bottom of the second end of the limiting component is provided with a limiting clamping groove, and the limiting clamping groove can be rotated to lock the hook shaft in the first clamping groove.

2. The quick change device for an excavator of claim 1 wherein the second end of the limiting member is further provided with a handle bar.

3. The quick change device for an excavator of claim 1 wherein the connector comprises two symmetrically disposed connector plates, the spacing member being located between the two connector plates.

4. The quick change device for a bucket of an excavator of claim 3 wherein the limiting member comprises an elastic member and a top bead, the top bead being located at an end of the elastic member, the connecting plate having an upper limiting aperture and a lower limiting aperture, the top bead being located in the lower limiting aperture when the limiting slot locks the hanger shaft in the first slot.

5. The quick change device for an excavator of claim 4 wherein the limiting member comprises two side plates spaced apart from each other, the resilient member is located between the two side plates, the side plates are provided with top bead through holes, and the top beads are located in the top bead through holes.

6. The quick change device for an excavator of claim 5 wherein the resilient member is a spring.

7. The quick-change device for an excavator according to claim 1, further comprising a safety pin, wherein safety pin through holes are formed in corresponding positions of the connecting seat, the movable hook and the limiting component, and the safety pin is located in the safety pin through holes when the limiting clamping groove locks the hook shaft in the first clamping groove.

8. The bucket quick change device for an excavator according to claim 1, wherein a fourth clamping groove is provided at a position of the fixed hook corresponding to the third clamping groove of the movable hook, and a notch direction of the third clamping groove is different from a notch direction of the fourth clamping groove when the limiting clamping groove locks the hook shaft in the first clamping groove.

9. The quick change device for an excavator of claim 8 wherein the third and fourth detents have a notch direction which is perpendicular to each other when the limit detents lock the hanger shaft in the first detent.

10. An excavator comprising a bucket quick change device according to any one of claims 1 to 9.