Stone grabbing device for excavator

Abstract

The stone grabber for the excavator belongs to the technical field of excavators and comprises a movable claw and a fixed claw, the bottom end of the movable claw is hinged to the top end of the fixed claw, the middle of the fixed claw is connected with a first lug plate at the bottom of a bucket rod through a supporting rod, and a connecting rod mechanism is arranged at the top of the bucket rod. And the movable claw is connected with the connecting rod mechanism through a quick change mechanism. According to the utility model, the stone grabber can be quickly mounted, the time for mounting the stone grabber by the excavator is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavators, and in particular relates to a stone grabber for an excavator. Background Art

[0002] A stone grabber is an attachment of an excavator, used to grab and carry larger objects such as marble, scrap steel, wood, etc. To ensure the flexibility of the stone grabber and meet the requirements of most working conditions, the existing stone grabber is connected to the excavator boom through multiple connecting rod mechanisms. Due to the complex structure and heavy weight of the stone grabber, the installation of the stone grabber requires multiple people to complete the work, and the installation speed is slow, which seriously affects the construction efficiency. Utility Model Content

[0003] In view of the defects or shortcomings in the prior art, the utility model provides a stone grabber for an excavator, which can realize the rapid installation of the stone grabber, reduce the time required for the excavator to install the stone grabber, and improve construction efficiency.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An embodiment of the utility model provides a stone grabber for an excavator, comprising a movable claw and a fixed claw, wherein the bottom end of the movable claw is hinged to the top end of the fixed claw, the middle portion of the fixed claw is connected to the first ear plate at the bottom of the boom via a support rod, a connecting rod mechanism is provided at the top of the boom, and the movable claw is connected to the connecting rod mechanism via a quick-change mechanism.

[0006] Furthermore, a second ear plate is provided on the top of the boom, and the second ear plate is connected to the connecting rod mechanism through a stone grabber cylinder.

[0007] Furthermore, the connecting rod mechanism includes an upper connecting rod and a lower connecting rod, one end of the upper connecting rod is hinged to one end of the lower connecting rod, and the end of the stone grabber cylinder away from the second ear plate is rotatably connected to the hinge of the upper connecting rod and the lower connecting rod.

[0008] Furthermore, one end of the lower connecting rod away from the upper connecting rod is hinged to the middle support of the bucket arm, and one end of the upper connecting rod away from the lower connecting rod is hinged to the quick-change mechanism.

[0009] Furthermore, the upper connecting rod is hinged to the upper part of the quick-change mechanism, and the lower end of the quick-change mechanism is hinged to the front support of the bucket arm.

[0010] Furthermore, a movable hook and a fixed hook are provided on the side of the quick-change mechanism close to the movable claw, and a first connecting shaft and a second connecting shaft are provided on the side of the movable claw close to the quick-change mechanism, and the movable hook and the fixed hook are respectively provided corresponding to the first connecting shaft and the second connecting shaft.

[0011] Furthermore, the quick-change mechanism includes two baffles, two baffles are arranged in parallel, the fixing hook is arranged at the lower part of the two baffles, and both ends of the fixing hook are fixedly connected to the two baffles.

[0012] Furthermore, a connecting plate is provided between the two baffles, one end of the connecting plate is rotatably connected to the two baffles, and the other end of the connection is provided with a movable hook.

[0013] Furthermore, an oil cylinder is provided between the two baffles. The oil cylinder is located below the connecting plate, and a telescopic shaft of the oil cylinder is rotatably connected to the connecting plate.

[0014] Furthermore, the longitudinal cross-section of the fixed hook is an arc-shaped structure, and the opening of the fixed hook is arranged downward; the longitudinal cross-section of the movable hook is an arc-shaped structure, and the opening of the movable hook is arranged upward.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a quick-change mechanism between the movable claw and the connecting rod mechanism, utilizes the quick-change mechanism to realize the rapid connection of the stone grabber, reduces the time required for installing the stone grabber on the excavator, and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing the connection between the stone grabber and the bucket arm in an embodiment of the present utility model;

[0018] Figure 2 This is a structural diagram of the quick-change mechanism in an embodiment of the present utility model;

[0019] Among them, 1. Arm; 2. Stone grabber; 3. Front support; 4. Middle support; 5. First ear plate; 6. Stone grabber cylinder; 7. Second ear plate; 8. Movable claw; 9. Fixed claw; 10. Support rod; 11. Upper connecting rod; 12. Lower connecting rod; 13. Quick change mechanism; 131. Baffle; 132. Fixed hook; 133. Connecting plate; 134. Movable hook; 135. Cylinder. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] A typical implementation of the present invention is as follows: Figure 1As shown, a stone grabber for an excavator includes a boom 1 and a stone grabber 2. The boom 1 is spliced ​​into a box structure by a top plate, a side plate and a bottom plate. A front support 3 and a middle support 4 are provided at the front end of the boom 1. The middle support 4 is located behind the front support 3 and is arranged close to the front support 3. Two second ear plates 7 are provided in parallel on the top of the boom 1. The second ear plates 7 are provided with an axial hole for connecting to the stone grabber cylinder 6. A first ear plate 5 is provided in parallel at the bottom of the boom 1. The first ear plate 5 is provided with an axial hole for connecting to the stone grabber 2.

[0022] The stone grabber 2 includes a movable claw 8 and a fixed claw 9, each of which is composed of two parallel arc-shaped plates. The bottom end of the movable claw 8 is hinged to the top end of the fixed claw 9 by a pin, so that the movable claw 8 and the fixed claw 9 can rotate relative to each other. A pin is fixedly connected to the middle of the fixed claw 9, and the fixed claw 9 is connected to the boom 1 through a support rod 10. One end of the support rod 10 is fixed to the pin in the middle of the fixed claw 9, and the other end is connected to the first ear plate 5 at the bottom of the boom 1.

[0023] The second ear plate 7 is connected to the connecting rod mechanism through the stone grabber cylinder 6. The connecting rod mechanism includes an upper connecting rod 11 and a lower connecting rod 12. One end of the upper connecting rod 11 is hinged to one end of the lower connecting rod 12. The end of the stone grabber cylinder 6 away from the second ear plate 7 is rotatably connected to the hinge between the upper connecting rod 11 and the lower connecting rod 12. The end of the lower connecting rod 12 away from the upper connecting rod 11 is hinged to the middle support 4. The end of the upper connecting rod 11 away from the lower connecting rod 12 is rotatably connected to a quick-change mechanism 13, which is detachably connected to the movable claw 8 through the quick-change mechanism 13.

[0024] The upper connecting rod 11 is hinged to the upper part of the quick-change mechanism 13, and the lower end of the quick-change mechanism 13 is hinged to the front support 3. A movable hook 134 and a fixed hook 132 are provided on the side of the quick-change mechanism 13 close to the movable claw 8. A first connecting shaft and a second connecting shaft are provided on the side of the movable claw 8 close to the quick-change mechanism 13. The movable hook 134 and the fixed hook 132 are respectively provided corresponding to the first connecting shaft and the second connecting shaft, thereby realizing the connection between the quick-change mechanism 13 and the movable claw 8.

[0025] Specifically, such as Figure 2As shown, the quick-change mechanism 13 includes a baffle 131, two baffles 131 are provided, and the two baffles 131 are arranged in parallel. The fixing hook 132 is provided at the lower part of the two baffles 131, and the two ends of the fixing hook 132 are fixedly connected to the two baffles 131 respectively. The longitudinal cross-section of the fixing hook 132 is an arc-shaped structure, and the opening of the fixing hook 132 is set downward. The second connecting shaft can be put into the fixing hook 132 from the opening of the fixing hook 132, so that the fixing hook 132 is covered outside the second connecting shaft. On the other side, a connecting plate 133 is provided on the upper part of the two baffles 131, and one end of the connecting plate 133 is rotatably connected to the two baffles 131 respectively, and the other end of the connecting plate 133 is provided with a movable hook 134, so that the movable hook 134 can move under the drive of the connecting plate 133, and the longitudinal cross-section of the movable hook 134 is an arc-shaped structure, and the opening of the movable hook 134 is set upward, and the first connecting shaft can be inserted into the movable hook 134 from the opening of the movable hook 134, so that the movable hook 134 is covered on the outside of the first connecting shaft.

[0026] An oil cylinder 135 is also provided between the two baffles 131. The oil cylinder 135 is located below the connecting plate 133. The fixed end of the oil cylinder 135 is rotatably connected to the two baffles 131 through a pin shaft, and the telescopic end of the oil cylinder 135 is rotatably connected to the connecting plate 133 through a pin shaft. Driven by the oil cylinder 135, the connecting plate 133 rotates around one end thereof, thereby driving the movable hook 134 to move.

[0027] When in use, first place the first connecting shaft into the fixed hook 132 from the bottom opening of the fixed hook 132, and use the cylinder 135 to drive the connecting plate 133 to rotate, so that the second connecting shaft is placed into the movable hook 134 from the top opening of the movable hook 134, completing the quick connection between the movable claw and the quick-change mechanism.

[0028] The utility model provides a quick-change mechanism between the movable claw and the connecting rod mechanism, utilizes the quick-change mechanism to realize the rapid connection of the stone grabber, reduces the time required for installing the stone grabber on the excavator, and improves the construction efficiency.

[0029] How it works

[0030] During installation, first connect the telescopic end of the stone grabber cylinder to the connecting rod mechanism through a pin shaft, connect the lower connecting rod in the connecting rod mechanism to the middle support through a pin shaft, hinge the upper connecting rod of the connecting rod mechanism to the upper part of the quick-change mechanism through a pin shaft, and connect the lower part of the quick-change mechanism to the front support through a pin shaft;

[0031] First, insert the first connecting shaft on the movable claw into the fixed hook from the bottom opening of the fixed hook, use the hydraulic cylinder to drive the connecting plate to rotate, so that the second connecting shaft is inserted into the movable hook from the top opening of the movable hook to complete the quick connection between the movable claw and the quick-change mechanism;

[0032] One end of the fixed claw is connected to the movable claw through a pin shaft, and the other end is rotatably connected to the bucket arm through a support rod.

[0033] During movement, the extension and contraction of the stone grabber cylinder pushes the lower connecting rod, which in turn drives the upper connecting rod to rotate around the center of the middle support.

[0034] At this time, the movable claw and the quick-change mechanism are equivalent to a whole, which rotates around the center of the front support and moves. The movement of the connecting rod mechanism pushes the movable claw and the quick-change mechanism to move together;

[0035] The movable claw moves in a counterclockwise direction, the fixed claw moves in a clockwise direction, and the support rod moves slightly downward, so that the two claws close to clamp the object, and open otherwise. This is a complete clamping movement process.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stone grabber for an excavator, characterized in that: It includes a movable claw and a fixed claw. The bottom end of the movable claw is hinged to the top end of the fixed claw. The middle part of the fixed claw is connected to the first ear plate at the bottom of the boom through a support rod. A connecting rod mechanism is provided on the top of the boom. The movable claw is connected to the connecting rod mechanism through a quick-change mechanism.

2. The stone grabber for an excavator according to claim 1, wherein: A second ear plate is provided on the top of the boom, and the second ear plate is connected to the connecting rod mechanism through a stone grabber oil cylinder.

3. The stone grabber for an excavator according to claim 2, wherein: The connecting rod mechanism includes an upper connecting rod and a lower connecting rod, one end of the upper connecting rod is hinged to one end of the lower connecting rod, and one end of the stone grabber oil cylinder away from the second ear plate is rotatably connected to the hinge of the upper connecting rod and the lower connecting rod.

4. The stone grabber for an excavator according to claim 3, wherein: One end of the lower connecting rod away from the upper connecting rod is hinged to the middle support of the bucket rod, and one end of the upper connecting rod away from the lower connecting rod is hinged to the quick-change mechanism.

5. The stone grabber for an excavator according to claim 3, wherein: The upper connecting rod is hinged to the upper part of the quick-change mechanism, and the lower end of the quick-change mechanism is hinged to the front support of the bucket arm.

6. The stone grabber for an excavator according to claim 1, wherein: A movable hook and a fixed hook are provided on one side of the quick-change mechanism close to the movable claw, and a first connecting shaft and a second connecting shaft are provided on one side of the movable claw close to the quick-change mechanism. The movable hook and the fixed hook are respectively provided corresponding to the first connecting shaft and the second connecting shaft.

7. The stone grabber for an excavator according to claim 6, characterized in that: The quick-change mechanism includes two baffles, which are arranged in parallel. The fixing hooks are arranged at the lower parts of the two baffles, and the two ends of the fixing hooks are fixedly connected to the two baffles.

8. The stone grabber for an excavator according to claim 7, wherein: A connecting plate is provided between the two baffles, one end of the connecting plate is rotatably connected to the two baffles, and the other end of the connection is provided with a movable hook.

9. The stone grabber for an excavator according to claim 8, wherein: An oil cylinder is also provided between the two baffles. The oil cylinder is located below the connecting plate, and a telescopic shaft of the oil cylinder is rotatably connected to the connecting plate.

10. The stone grabber for an excavator according to claim 6, wherein: The longitudinal section of the fixed hook is an arc-shaped structure, and the opening of the fixed hook is arranged downward; the longitudinal section of the movable hook is an arc-shaped structure, and the opening of the movable hook is arranged upward.

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