Stone grabbing device of excavator
By setting gripping teeth and strengthening cylinder design on the inside of the gripping claw of the excavator stone grasper, combining the angle adjustment component and the rotating table, the problem of insufficient gripping when grabbing stones is solved, achieving stronger gripping and flexibility, and improving construction efficiency.
Patent Information
- Application Number
- CN202421003440.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-10
AI Technical Summary
When grabbing and handling stones, existing wood grabbers have insufficient grip and are not flexible enough, making it difficult to effectively solve the problem of different sizes and shapes of stones, resulting in low construction efficiency.
An excavator stone grabber was designed to achieve stronger grip and flexibility by setting gripping teeth on the inside of the gripping claws and strengthening the cylinder design, increasing the angle adjustment assembly and rotating table.
It achieves better grasping and fixing of stones, enhances the grip and flexibility of the gripping claws, ensures the safe and effective handling of stones, and improves construction efficiency.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, in particular to a stone grabber for an excavator. Background Art
[0002] Excavators are indispensable machinery and equipment in today's construction. Excavators are used in foundation engineering, road engineering, and mining engineering. With the continuous expansion of the construction field, the defects of a single excavator have also become apparent. During the construction process, it is inevitable that there will be situations where materials need to be transported, or situations where the excavator is blocked. For example, when there are some strip materials or some block materials, the area of these materials is sometimes larger than the excavator bucket material, and the excavator cannot transport them normally. The only way to do this is to push them aside, and these materials cannot be effectively stacked, resulting in low construction efficiency. For the transportation of such strip or tubular materials, a wood grab is now set up. The wood grab is used in conjunction with the excavator. The wood grab is equipped with two claws, which are as flexible as a human palm and can rotate 360 degrees. The inner and outer sides of the two claws are arc-shaped, so when grabbing wood, they can It fits the wood very well, and with the gripping power of the wood grab, it can effectively carry the wood while reducing damage to the wood surface, and is flexible to load. With the increasing number of application occasions, wood grabs are also used in grabbing stones. The shape of stone is not like wood. The shape of wood is relatively single, while the shape of stone varies greatly. Wood is easy to cut, while stone is difficult to cut. The stones can only be divided into pieces by hammering, and then the wood grab is used to carry the stones. However, due to the different sizes and shapes of stones, the coordination between the claws is not flexible enough when grabbing stones. Wood grabs are more used in forestry, wood processing and other occasions where wood needs to be handled. In construction, road construction and other occasions where stone needs to be handled, the gripping power of the wood grab cannot be well demonstrated due to the smooth inside of the wood grab, and the force required to grab stones is different from that required to grab wood. Utility Model Content
[0003] The purpose of the utility model is to solve the problem that the gripping force of the wood grabber cannot meet the force required for grabbing stones, and the wood grabber is smooth inside and inconvenient to grab stones, and proposes an excavator stone grabber. The utility model increases the gripping force of the claw and makes it more flexible and stable by adding grab teeth, setting a more flexible claw, and strengthening the design of the oil cylinder.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0005] A stone grabber for an excavator comprises a first grabber, a second grabber, an angle adjustment assembly and a rotating platform; a base is arranged below the rotating platform, a connecting bracket is fixedly connected to the top, a ladder frame is fixedly connected to the bottom of the base, the first grabber and the second grabber are cross-arranged at the bottom corner of the ladder frame; the angle adjustment assembly is arranged on the outside of the first grabber, and the angle adjustment assembly is used to adjust the grabbing angle of the first grabber so that the first grabber better fits the edge of the stone;
[0006] The angle adjustment assembly includes a first hydraulic cylinder, a first connecting member, a second connecting member, a turntable, and a first hydraulic motor and a second hydraulic motor; the first hydraulic motor and the second hydraulic motor are arranged at two corners of the base above the first gripper, the first hydraulic motor and the second hydraulic motor are both connected to the top of the first gripper, and the output ends of the first hydraulic motor and the second hydraulic motor connected to the first gripper are both provided with turntables, the first gripper is slidingly connected to the first hydraulic motor and the second hydraulic motor respectively through the turntable, the first hydraulic cylinder is arranged between the first hydraulic motor and the second hydraulic motor, the first hydraulic cylinder is placed along the outer edge of the first gripper, the lower end of the first hydraulic cylinder is fixedly connected to the outer center of the first gripper, telescopic rods are arranged on both sides of the lower end of the first hydraulic cylinder, the ends of the telescopic rods are respectively provided with the first connecting member and the second connecting member, and the first connecting member and the second connecting member are respectively fixedly connected to the outer side of the first gripper.
[0007] As a further technical improvement, the first gripper includes a first gripping finger, a second gripping finger and a third gripping finger; the second gripping finger is arranged between the first gripping finger and the third gripping finger, the second gripping finger is rotatably connected to the inner side of the ladder frame, the first gripping finger and the third gripping finger are respectively connected to the two corners of the base through the first hydraulic motor and the second hydraulic motor, the first gripping finger and the third gripping finger are respectively slidably connected to the bottom ends of the first hydraulic motor and the second hydraulic motor through the turntable; the outer center of the second gripping finger is fixedly connected to the lower end of the first hydraulic cylinder, and the outer centers of the first gripping finger and the third gripping finger are respectively fixedly connected with the first connecting member and the second connecting member.
[0008] As a further technical improvement, the second gripper includes a fourth gripper finger, a fifth gripper finger and a second hydraulic cylinder; the fourth gripper finger and the fifth gripper finger are rotatably arranged on the inner side of the ladder frame at a certain interval, one end of the second hydraulic cylinder is arranged on the bottom of the base above the second gripper, and the other end of the second hydraulic cylinder is fixedly connected to the center of the outer side of the second gripper, and the second hydraulic cylinder provides power for the second gripper.
[0009] As a further technical improvement, the first gripper and the second gripper are both arc-shaped, and a plurality of gripping teeth and a plurality of shovel edges are arranged on the inner side of the first gripper and the second gripper; the plurality of gripping teeth are arranged at a certain interval on the inner side of the gripping fingers corresponding to the first gripper and the second gripper, and the plurality of shovel edges are arranged one by one on the bottom side of the gripping fingers corresponding to the first gripper and the second gripper.
[0010] As a further technical improvement, the grabbing teeth are in a trapezoidal shape, and the long bottom edge is fixedly connected to the inner side of each grabbing finger.
[0011] As a further technical improvement, the connecting bracket is Y-shaped, with the upper part being used to connect to the front end of the excavator arm and the lower part being fixedly connected to the top of the rotating table.
[0012] As a further technical improvement, the first connecting member and the second connecting member are both composed of a U-shaped plate, a bottom plate, and a fixed axis; the telescopic rod is provided with rings at both ends facing the first grasping finger and the third grasping finger; the first connecting member and the second connecting member are symmetrically arranged on the first grasping finger and the third grasping finger respectively, and the U-shaped plate openings in the first connecting member and the second connecting member are both facing the second grasping finger, the first connecting member and the second connecting member are respectively fixedly connected to the first grasping finger and the third grasping finger through the bottom plate, an arc groove is provided on the side of the bottom plate facing the second grasping finger, the fixed axis passes through the ring and the U-shaped plate along the direction of the first grasping finger or the third grasping finger, and the first connecting member and the second connecting member can both rotate through the cooperation of the ring and the fixed axis.
[0013] Compared with the existing technology, the utility model has the following beneficial effects:
[0014] 1. In the utility model, grab teeth are arranged on the inner side of the claw on the basis of the original wood grab, so that stones can be better grabbed and fixed. A more powerful oil cylinder is designed to meet the demand for gripping force. The mutual cooperation of the two can ensure safe and effective work when grabbing stones.
[0015] 2. In the utility model, an angle adjustment component is provided, a rotatable device is provided on one of the gripping claws to drive the gripping fingers to rotate, and the gripping fingers are expanded outwards through the telescopic rod, so that the contact between the gripping fingers and the stone is more uniform, and the stone can be grasped to the greatest extent and more firmly. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0018] Figure 2 This is a schematic diagram of the combined structure of the angle adjustment component and the gripping finger of the utility model;
[0019] Figure 3 It is the angle adjustment component of the utility model;
[0020] Figure 4 It is a front view of the utility model and the angle adjustment component.
[0021] Description of reference numerals:
[0022] 1-first gripper, 2-second gripper, 3-angle adjustment assembly, 4-rotating table, 5-gripping tooth, 6-shovel blade, 7-base, 8-connecting bracket, 9-trapezoidal frame, 11-first gripping finger, 12-second gripping finger, 13-third gripping finger, 21-fourth gripping finger, 22-fifth gripping finger, 23-second hydraulic cylinder, 31-first hydraulic cylinder, 32-first connecting piece, 33-second connecting piece, 34-first hydraulic motor, 35-second hydraulic motor, 36-turntable. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.
[0027] like Figures 1 to 4 As shown, the utility model provides an excavator stone grabber, comprising a first grabber 1, a second grabber 2, an angle adjustment component 3 and a rotating table 4; a base 7 is arranged below the rotating table 4, a connecting bracket 8 is fixedly connected to the top, a ladder frame 9 is fixedly connected to the bottom of the base 7, the first grabber 1 and the second grabber 2 are cross-arranged at the bottom corners of the ladder frame 9; the angle adjustment component 3 is arranged on the outer side of the first grabber 1, and the angle adjustment component 3 is used to adjust the grabbing angle of the first grabber 1 so that the first grabber 1 can better fit the edge of the stone. In this embodiment, the connecting bracket 8 is connected to the front end of the digging arm of the excavator, the hole of the connecting bracket 8 is aligned with the hole at the front end of the digging arm, and then the pins are inserted through the holes in sequence to fix them, and the various control components are connected. The stone grabber is controlled to grab the stone through the operating lever or control system of the excavator. The first gripping finger 11 and the third gripping finger 13 in the first gripper 1 can be expanded and rotated at a certain angle through the angle adjustment component 3, so that the contact range between the first gripper 1 and the stone is widened, and the second gripper 2 is cooperated to transport the stone more stably.
[0028] The angle adjustment assembly 3 includes a first hydraulic cylinder 31, a first connecting member 32, a second connecting member 33, a rotating disk 36, and a first hydraulic motor 34 and a second hydraulic motor 35; the first hydraulic motor 34 and the second hydraulic motor 35 are arranged at the two corners of the base 7 above the first gripper 1, the first hydraulic motor 34 and the second hydraulic motor 35 are both connected to the top of the first gripper 1, and the output ends of the first hydraulic motor 34 and the second hydraulic motor 35 connected to the first gripper 1 are both provided with a rotating disk 36, and the first gripper 1 is respectively connected to the first gripper 1 through the rotating disk 36. The first hydraulic motor 34 and the second hydraulic motor 35 are slidably connected, and the first hydraulic cylinder 31 is arranged between the first hydraulic motor 34 and the second hydraulic motor 35. The first hydraulic cylinder 31 is placed along the outer edge of the first gripper 1, and the lower end of the first hydraulic cylinder 31 is fixedly connected to the center of the outer side of the first gripper 1. Telescopic rods are arranged on both sides of the lower end of the first hydraulic cylinder 31, and the first connecting member 32 and the second connecting member 33 are respectively arranged at the ends of the telescopic rods. The first connecting member 32 and the second connecting member 33 are respectively fixedly connected to the outer side of the first gripper 1. In this embodiment, the function of the first hydraulic motor 34 and the second hydraulic motor 35 is to rotate the first grasping finger 11 and the third grasping finger 13 by a certain angle through the turntable 36, and cooperate with the telescopic rods on both sides of the bottom end of the first hydraulic cylinder 31 to slide the first grasping finger 11 and the third grasping finger 13 in the turntable 36 by a certain interval. After the first grasping finger 11 and the third grasping finger 13 are expanded, the first hydraulic motor 34 and the second hydraulic motor 35 respectively rotate the first grasping finger 11 and the third grasping finger 13 to achieve angle adjustment (the telescopic rod is not fully drawn in the figure, and the first connecting member 32 and the second connecting member 33 are connected to the first grasping finger 11 and the third grasping finger 13 on one side, and arc grooves are provided. The rotation angle of the first grasping finger 11 and the third grasping finger 13 depends on the interval between the arc groove and the telescopic rod, and the arc groove gives the telescopic rod a certain rotation space).
[0029] The first gripper 1 includes a first gripping finger 11, a second gripping finger 12 and a third gripping finger 13; the second gripping finger 12 is arranged between the first gripping finger 11 and the third gripping finger 13, and the second gripping finger 12 is rotatably connected to the inner side of the ladder frame 9, the first gripping finger 11 and the third gripping finger 13 are respectively connected to the two corners of the base 7 through the first hydraulic motor 34 and the second hydraulic motor 35, and the first gripping finger 11 and the third gripping finger 13 are respectively slidably connected to the bottom ends of the first hydraulic motor 34 and the second hydraulic motor 35 through the turntable 36; the outer center of the second gripping finger 12 is fixedly connected to the lower end of the first hydraulic cylinder 31, and the outer center of the first gripping finger 11 and the third gripping finger 13 are respectively fixedly connected with the first connecting member 32 and the second connecting member 33. In this embodiment, the first grasping finger 11, the second grasping finger 12 and the third grasping finger 13 are all driven by the first hydraulic cylinder 31, and the first connecting member 32 and the second connecting member 33 are both rotatably connected to the two ends of the telescopic rod. The first connecting member 32 and the second connecting member 33 are both provided with an arc groove for the first grasping finger 11 and the third grasping finger 13 to rotate a certain angle.
[0030] The second gripper 2 includes a fourth gripper finger 21, a fifth gripper finger 22 and a second hydraulic cylinder 23; the fourth gripper finger 21 and the fifth gripper finger 22 are rotatably arranged at a certain interval on the inner side of the ladder frame 9, one end of the second hydraulic cylinder 23 is arranged on the bottom of the base 7 above the second gripper 2, and the other end of the second hydraulic cylinder 23 is fixedly connected to the center of the outer side of the second gripper 2, and the second hydraulic cylinder 23 provides power for the second gripper 2. In this embodiment, the second gripper 2 is rotatably connected to the inner side of the ladder frame 9, and the fourth gripper finger 21 and the fifth gripper finger 22 of the second gripper 2 are arranged at a certain interval on the inner side of the ladder frame 9, and are both provided with driving force by the second hydraulic cylinder 23, and the second gripper 2 is rotated to one side around the ladder frame 9 through the second hydraulic cylinder 23.
[0031] The first gripper 1 and the second gripper 2 are both arc-shaped, and a plurality of gripping teeth 5 and a plurality of shovel blades 6 are arranged on the inner side of the first gripper 1 and the second gripper 2; the plurality of gripping teeth 5 are arranged at a certain interval on the inner side of the gripping fingers corresponding to the first gripper 1 and the second gripper 2, and the plurality of shovel blades 6 are arranged one by one on the bottom side of the gripping fingers corresponding to the first gripper 1 and the second gripper 2. In this embodiment, the gripping teeth 5 and the shovel blades 6 are superficially used to strengthen the gripping fingers, and the role of the shovel blades 6 is equivalent to adding nails to the shovel blades 6. The role of the gripping teeth 5 is to better fix the stones when grabbing them, and to better carry them.
[0032] The grabbing teeth 5 are in a trapezoidal shape, and the long bottom side is fixedly connected to the inner side of each grabbing finger. This embodiment is the same as above.
[0033] The connecting bracket 8 is Y-shaped, with the upper portion being used to connect to the front end of the excavator arm, and the lower portion being fixedly connected to the top of the rotating platform 4. In this embodiment, the connecting bracket 8 is designed to fit the front end of the excavator arm, which is convenient for use and replacement.
[0034] The first connecting member 32 and the second connecting member 33 are both composed of a U-shaped plate, a bottom plate, and a fixed axis; the telescopic rod is provided with a circular ring at both ends facing the first grasping finger 11 and the third grasping finger 13; the first connecting member 32 and the second connecting member 33 are symmetrically provided on the first grasping finger 11 and the third grasping finger 13, respectively; the U-shaped plates in the first connecting member 32 and the second connecting member 33 are both facing the second grasping finger 12; the first connecting member 32 and the second connecting member 33 are respectively fixedly connected to the first grasping finger 11 and the third grasping finger 13 through the bottom plate; the bottom plate is provided with an arc groove on the side facing the second grasping finger 12; the fixed axis passes through the circular ring and the U-shaped plate along the direction of the first grasping finger 11 or the third grasping finger 13; the first connecting member 32 and the second connecting member 33 can both rotate through the cooperation of the circular ring and the fixed axis. In this embodiment, the bottom plates of the connecting members on both sides are provided with arc grooves, mainly to provide space for the rotation of the first grasping finger 11 and the third grasping finger 13.
[0035] The method of using the utility model is as follows: before use, check whether the stone grabber is intact to ensure the safety of personnel and equipment, connect the connecting bracket 8 with the front end of the digging arm of the excavator, align the hole of the connecting bracket 8 with the hole at the front end of the digging arm, then put pins through the holes in sequence to fix, connect various control components, and control the first gripper 1 and the second gripper 2 to open outward through the operating lever or control system of the excavator, and then align them to the two sides of the stone and lower them, control the first gripper 1 and the second gripper 2 to close inward, keep applying relative force to grab the stone for transportation; the angle adjustment component 3 is when the stone is slightly larger than the width of the first gripper 1 of the stone grabber, the first gripper 11 and the third gripper 13 in the first gripper 1 are expanded to both sides by a certain interval through the turntable 36, and the first hydraulic motor 34 and the second hydraulic motor 35 are used to respectively rotate the angles of the first gripper 11 and the third gripper 13, so as to increase the width of the first gripper 1, cooperate with the second gripper 2, and use the gripping force better. The above are the steps for operating the stone grabber.
[0036] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A stone grabber for an excavator, characterized in that: include: A first gripper (1), a second gripper (2), an angle adjustment component (3) and a rotating platform (4); a base (7) is arranged below the rotating platform (4), a connecting bracket (8) is fixedly connected to the top, a ladder frame (9) is fixedly connected to the bottom of the base (7), the first gripper (1) and the second gripper (2) are cross-arranged at the bottom corner of the ladder frame (9); the angle adjustment component (3) is arranged on the outside of the first gripper (1), and the angle adjustment component (3) is used to adjust the gripping angle of the first gripper (1) so that the first gripper (1) better fits the edge of the stone; The angle adjustment assembly (3) comprises a first hydraulic cylinder (31), a first connecting member (32), a second connecting member (33), a rotating disk (36), and a first hydraulic motor (34) and a second hydraulic motor (35); the first hydraulic motor (34) and the second hydraulic motor (35) are arranged at two corners of the base (7) above the first gripper (1); the first hydraulic motor (34) and the second hydraulic motor (35) are both connected to the top of the first gripper (1); the output ends of the first hydraulic motor (34) and the second hydraulic motor (35) connected to the first gripper (1) are both provided with a rotating disk (36); the first gripper (1) is rotated by the rotating disk (36) ) are respectively slidably connected to the first hydraulic motor (34) and the second hydraulic motor (35), the first hydraulic cylinder (31) is arranged between the first hydraulic motor (34) and the second hydraulic motor (35), the first hydraulic cylinder (31) is placed along the outer edge of the first gripper (1), the lower end of the first hydraulic cylinder (31) is fixedly connected to the center of the outer side of the first gripper (1), telescopic rods are arranged on both sides of the lower end of the first hydraulic cylinder (31), the ends of the telescopic rods are respectively provided with the first connecting member (32) and the second connecting member (33), the first connecting member (32) and the second connecting member (33) are respectively fixedly connected to the outer side of the first gripper (1).
2. The excavator stone grab according to claim 1, characterized in that: The first gripper (1) comprises a first gripping finger (11), a second gripping finger (12) and a third gripping finger (13); the second gripping finger (12) is arranged between the first gripping finger (11) and the third gripping finger (13); the second gripping finger (12) is rotatably connected to the inner side of the ladder frame (9); the first gripping finger (11) and the third gripping finger (13) are respectively connected to the two corners of the base (7) through the first hydraulic motor (34) and the second hydraulic motor (35); the first gripping finger (11) and the third gripping finger (13) are respectively slidably connected to the bottom ends of the first hydraulic motor (34) and the second hydraulic motor (35) through the rotating disk (36); the outer center of the second gripping finger (12) is fixedly connected to the lower end of the first hydraulic cylinder (31); the outer centers of the first gripping finger (11) and the third gripping finger (13) are respectively fixedly connected to the first connecting member (32)0 and the second connecting member (33).
3. The excavator stone grab according to claim 1, characterized in that: The second gripper (2) comprises a fourth gripper finger (21), a fifth gripper finger (22) and a second hydraulic cylinder (23); the fourth gripper finger (21) and the fifth gripper finger (22) are rotatably arranged at a certain interval on the inner side of the ladder frame (9); one end of the second hydraulic cylinder (23) is arranged on the bottom of the base (7) above the second gripper (2); the other end of the second hydraulic cylinder (23) is fixedly connected to the center of the outer side of the second gripper (2); and the second hydraulic cylinder (23) provides power for the second gripper (2).
4. The excavator stone grab according to claim 1, characterized in that: The first gripper (1) and the second gripper (2) are both arc-shaped, and a plurality of gripping teeth (5) and a plurality of shovel blades (6) are arranged on the inner side of the first gripper (1) and the second gripper (2); the plurality of gripping teeth (5) are arranged at a certain interval on the inner side of the gripping fingers corresponding to the first gripper (1) and the second gripper (2), and the plurality of shovel blades (6) are arranged one by one on the bottom side of the gripping fingers corresponding to the first gripper (1) and the second gripper (2).
5. The excavator stone grab according to claim 4, characterized in that: The grabbing teeth (5) are in a trapezoidal shape, with a long bottom edge fixedly connected to the inner side of each grabbing finger.
6. The excavator stone grab according to claim 1, characterized in that: The connecting bracket (8) is Y-shaped, with the upper portion being used to connect to the front end of the digging arm of the excavator, and the lower portion being fixedly connected to the top end of the rotating platform (4).
7. The excavator stone grab according to claim 2, characterized in that: The first connecting member (32) and the second connecting member (33) are both composed of a U-shaped plate, a bottom plate, and a fixed axis; both ends of the telescopic rod facing the first grasping finger (11) and the third grasping finger (13) are provided with circular rings; the first connecting member (32) and the second connecting member (33) are symmetrically arranged on the first grasping finger (11) and the third grasping finger (13), respectively; the openings of the U-shaped plates in the first connecting member (32) and the second connecting member (33) are both facing the second grasping finger (12); the first connecting member (32) and the second connecting member (33) are respectively fixedly connected to the first grasping finger (11) and the third grasping finger (13) through the bottom plate; an arc groove is provided on the side of the bottom plate facing the second grasping finger (12); the fixed axis passes through the circular ring and the U-shaped plate along the direction of the first grasping finger (11) or the third grasping finger (13); the first connecting member (32) and the second connecting member (33) can both rotate through the cooperation of the circular ring and the fixed axis.