Rubble gripper for engineering

Abstract

The utility model discloses a rubble grabhook for engineering. The rubble grabhook comprises a loading and unloading seat, grabbing mechanisms are arranged at the lower end of the loading and unloading base and comprise grabbing arms and grabbing handles, the grabbing arms are evenly arranged at the lower end of the loading and unloading base, the upper end of the grabbing arm at the uppermost end is rotationally connected with the lower end of the loading and unloading base, and connecting bolts are rotationally connected between the vertically adjacent grabbing arms; the grabbing mechanism further comprises a first steel wire positioning ring, a second steel wire positioning ring, a first steel wire, a second steel wire and a first fixing base, the first steel wire positioning ring is fixedly connected to the middle of the surface of the side, away from the center of the loading and unloading base, of each grabbing arm, and the second steel wire positioning ring is fixedly connected to the middle of the surface of the side, away from the center of the loading and unloading base, of each grabbing arm. And the steel wires I penetrate through the interiors of the radially adjacent steel wire positioning rings I. According to the rubble grabhook on the engineering, a grabbing claw with a fixed posture is replaced by a multi-joint grabbing claw, so that the matching efficiency of the grabbing claw and rubble is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of loading and unloading equipment, in particular to a rough stone grab on engineering. BACKGROUND

[0002] Rough stone refers to the irregular stone block obtained after rock blasting or artificial excavation, usually without processing, maintaining its natural state. In construction engineering, rough stone is widely used in foundation, slope protection, embankment and other structures due to its natural form and high strength, and is an important building material. Its application in highway construction is also very extensive, and it is often used as roadbed and slope protection material.

[0003] In the prior art, rough stone masonry is basically completed by manual work, although some machinery is involved, but the participation degree is not high, mainly relying on manual work, which affects the construction progress and construction efficiency, and is not safe. Therefore, we provide a mechanical grab that can load and unload rough stone and also can masonry, to achieve the purpose of providing production efficiency. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a rough stone grab on engineering, replace the posture-fixed grab with a multi-joint grab, so that the grab can cooperate with the rough stone more efficiently, and effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rough stone grab on engineering, comprising a loading and unloading seat;

[0006] The loading and unloading seat is provided with a grabbing mechanism at the lower end, the grabbing mechanism comprises grabbing arms and grabbing handles, the grabbing arms are evenly arranged at the lower end of the loading and unloading seat, the upper end of the uppermost grabbing arm is rotatably connected with the lower end of the loading and unloading seat, a connecting bolt is rotatably connected between vertically adjacent grabbing arms, the lower end of the lowermost grabbing arm is rotatably connected with a grabbing handle, and the four grabbing handles are cooperatively installed, so that the multi-joint grab replaces the posture-fixed grab, and the grab can cooperate with the rough stone more efficiently.

[0007] Further, the grabbing mechanism further comprises steel wire positioning ring one, steel wire positioning ring two, steel wire one, steel wire two and fixed seat one, the steel wire positioning ring one is fixedly connected to the middle part of the surface of the grabbing arm far away from the center of the loading and unloading seat, the steel wire one is penetrated into the interior of the radially adjacent steel wire positioning ring one, the steel wire positioning ring two is fixedly connected to the middle part of the surface of the grabbing arm close to the center of the loading and unloading seat, the steel wire two is penetrated into the interior of the radially adjacent steel wire positioning ring two, the fixed seat one is symmetrically fixedly connected to the middle part of the surface of the grabbing handle close to the center of the loading and unloading seat, the middle part of the fixed seat one is fixedly connected with the lower end of the radially adjacent steel wire two, the fixed seat two is symmetrically fixedly connected to the middle part of the surface of the grabbing handle far away from the center of the loading and unloading seat, the middle part of the fixed seat two is fixedly connected with the lower end of the radially adjacent steel wire one, realizing the rotation of the grabbing arm at each joint, and further realizing the expansion and contraction of the grabbing mechanism.

[0008] Further, the upper end of the loading and unloading seat is fixedly connected with uniformly distributed positioning rods, the upper end between the four positioning rods is slidingly connected with an expansion steel wire disc, the upper end of the steel wire one is fixedly connected with the upper end of the expansion steel wire disc, the lower end between the four positioning rods is slidingly connected with a contraction steel wire disc, and the upper end of the four steel wires two is fixedly connected with the lower end of the contraction steel wire disc, providing driving force for the expansion and contraction of the grabbing mechanism.

[0009] Further, the upper end of the loading and unloading seat is fixedly connected with uniformly distributed supports one, the upper end of the support one is rotatably connected with an auxiliary wheel one, the auxiliary wheel one is matchedly installed with the middle part of the radially adjacent steel wire one, the lower surface of the loading and unloading seat is fixedly connected with uniformly distributed supports two, the lower end of the support two is rotatably connected with an auxiliary wheel two, the lower surface of the loading and unloading seat is fixedly connected with uniformly distributed supports three, the lower end of the support three is rotatably connected with an auxiliary wheel three, and the radially adjacent auxiliary wheel two and auxiliary wheel three are matchedly installed with the middle part of the same steel wire two, avoiding the abrasion of the steel wire and facilitating the convergence of the steel wire.

[0010] Further, the left side of the loading and unloading seat is provided with a control switch group, the input end of the control switch group is electrically connected with an external power supply, and each electric appliance is controlled.

[0011] Further, the upper end of the loading and unloading seat is fixedly connected with uniformly distributed outer support rods, the upper end between the four outer support rods is fixedly connected with a top plate, a bidirectional screw rod is rotatably connected between the top plate and the loading and unloading seat, the expansion steel wire disc and the contraction steel wire disc are respectively threadedly connected with the corresponding ends of the bidirectional screw rod, the upper end of the top plate is provided with a motor one, the lower end of the output shaft of the motor one is fixedly connected with the upper end of the bidirectional screw rod, and the input end of the motor one is electrically connected with the output end of the control switch group, providing driving force for the movement of the expansion steel wire disc and the contraction steel wire disc.

[0012] Further, the upper end of the top plate is fixedly connected with a protective cover, the upper end of the protective cover is rotationally connected with the lower end of the connecting seat, the upper end of the connecting seat is provided with a second motor, the lower end of the output shaft of the second motor is fixedly connected with the upper end of the protective cover, the input end of the second motor is electrically connected with the output end of the control switch group, the upper end of the connecting seat is fixedly connected with a mounting plate through uniformly distributed support columns, the inside of the mounting plate is provided with uniformly distributed mounting holes, which facilitates the adjustment of the direction of the grabbing mechanism and the installation of the four-legged grabbing claw.

[0013] Further, the lower end of the top plate and the upper end of the expansion wire disc are fixedly connected with a bellows, the upper end of the dismounting seat and the lower end of the contraction wire disc are also fixedly connected with a bellows, and the lower end of the expansion wire disc and the upper end of the contraction wire disc are also fixedly connected with a bellows, and the three bellows are movably sleeved on the outer surface of the bidirectional screw rod, so that external dust does not affect the threaded connection between the bidirectional screw rod and the expansion wire disc and the contraction wire disc.

[0014] Compared with the prior art, the rough stone grabbing claw on the engineering has the following advantages:

[0015] Through the cooperation of the grabbing arms and the corresponding grabbing handles which are rotationally connected through the connecting bolts, a multi-joint grabbing claw is formed, and then under the traction of the steel wires, the expansion and contraction of the grabbing claw are realized, the vertically adjacent grabbing arms are rotationally connected in sequence under the traction of the steel wires, so that the multi-joint grabbing claw can quickly adapt to the stable grabbing requirements of rough stones of different specifications, and the multi-joint grabbing claw replaces the posture-fixed grabbing claw, so that the grabbing claw can be more efficient in cooperation with the rough stones. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a sectional structural schematic view of the utility model.

[0018] In the drawing: 1 dismounting seat, 2 grabbing mechanism, 21 grabbing arm, 22 steel wire positioning ring one, 23 steel wire positioning ring two, 24 steel wire one, 25 steel wire two, 26 fixed seat one, 27 grabbing handle, 3 outer supporting rod, 4 positioning rod, 5 expansion wire disc, 6 contraction wire disc, 7 bidirectional screw rod, 8 first motor, 9 top plate, 10 protective cover, 11 connecting seat, 12 second motor, 13 mounting plate, 14 auxiliary wheel one, 15 auxiliary wheel two, 16 auxiliary wheel three, 17 control switch group, 18 bellows. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] Please refer to Figs. 1-2 The embodiment provides a technical scheme: a rubble grab for engineering, comprising a mounting and dismounting seat 1;

[0021] The mounting and dismounting seat 1 is provided with a grabbing mechanism 2 at the lower end, and the left side of the mounting and dismounting seat 1 is provided with a control switch group 17, the input end of the control switch group 17 is electrically connected with an external power supply, the grabbing mechanism 2 comprises grabbing arms 21 and grabbing handles 27, the grabbing arms 21 are uniformly arranged at the lower end of the mounting and dismounting seat 1, the upper end of the uppermost grabbing arm 21 is rotationally connected with the lower end of the mounting and dismounting seat 1, a connecting bolt is rotationally connected between vertically adjacent grabbing arms 21, the lower end of the lowermost grabbing arm 21 is rotationally connected with a grabbing handle 27, four grabbing handles 27 are cooperatively installed, the grabbing mechanism 2 further comprises a steel wire positioning ring one 22, a steel wire positioning ring two 23, a steel wire one 24, a steel wire two 25 and a fixed seat one 26, the steel wire positioning ring one 22 is fixedly connected to the middle part of the surface of the grabbing arm 21 away from the center of the mounting and dismounting seat 1, the steel wire one 24 penetrates between the interiors of radially adjacent steel wire positioning ring ones 22, the steel wire positioning ring two 23 is fixedly connected to the middle part of the surface of the grabbing arm 21 close to the center of the mounting and dismounting seat 1, the steel wire two 25 penetrates between the interiors of radially adjacent steel wire positioning ring twos 23, the fixed seat one 26 is symmetrically fixedly connected to the middle part of the surface of the grabbing handle 27 close to the center of the mounting and dismounting seat 1, the middle part of the fixed seat one 26 is fixedly connected with the lower end of the radially adjacent steel wire two 25, and a fixed seat two is symmetrically fixedly connected to the middle part of the surface of the grabbing handle 27 away from the center of the mounting and dismounting seat 1, the middle part of the fixed seat two is fixedly connected with the lower end of the radially adjacent steel wire one 24;

[0022] The upper end of the mounting seat 1 is fixedly connected with uniformly distributed positioning rods 4, the upper end between the four positioning rods 4 is slidably connected with an expanding wire reel 5, the upper end of each steel wire one 24 is fixedly connected with the upper end of the expanding wire reel 5, the lower end between the four positioning rods 4 is slidably connected with a contracting wire reel 6, the upper end of each steel wire two 25 is fixedly connected with the lower end of the contracting wire reel 6, the upper end of the mounting seat 1 is fixedly connected with uniformly distributed supports one, the upper end of each support one is rotatably connected with an auxiliary wheel one 14, the auxiliary wheel one 14 is matched with the middle part of the radially adjacent steel wire one 24, the steel wire one 24 passes through the lower end of the radially adjacent auxiliary wheel one 14 from bottom to top, the lower surface of the mounting seat 1 is fixedly connected with uniformly distributed supports two, the lower end of each support two is rotatably connected with an auxiliary wheel two 15, the lower surface of the mounting seat 1 is fixedly connected with uniformly distributed supports three, the lower end of each support three is rotatably connected with an auxiliary wheel three 16, the radially adjacent auxiliary wheel two 15 and the auxiliary wheel three 16 are matched with the middle part of the same steel wire two 25, the steel wire two 25 passes through the upper end of the radially adjacent auxiliary wheel 16 and the lower end of the auxiliary wheel two 15 from bottom to top, the upper end of the mounting seat 1 is fixedly connected with uniformly distributed outer supporting rods 3, the upper end between the four outer supporting rods 3 is fixedly connected with a top plate 9, the top plate 9 and the mounting seat 1 are rotatably connected with a bidirectional screw rod 7, the expanding wire reel 5 and the contracting wire reel 6 are respectively threadedly connected with the corresponding ends of the bidirectional screw rod 7, the upper end of the top plate 9 is provided with a motor one 8, the lower end of the output shaft of the motor one 8 is fixedly connected with the upper end of the bidirectional screw rod 7, the input end of the motor one 8 is electrically connected with the output end of a control switch group 17, the lower end of the top plate 9 and the upper end of the expanding wire reel 5 are fixedly connected with corrugated pipes 18, the upper end of the mounting seat 1 and the lower end of the contracting wire reel 6 are also fixedly connected with the corrugated pipes 18, the lower end of the expanding wire reel 5 and the upper end of the contracting wire reel 6 are also fixedly connected with the corrugated pipes 18, the three corrugated pipes 18 are movably sleeved on the outer surface of the bidirectional screw rod 7, when the expanding wire reel 5 moves upwards and the contracting wire reel 6 moves downwards, the uppermost and lowermost corrugated pipes 18 follow the contraction, and the middle corrugated pipe 18 is stretched, when the expanding wire reel 5 moves downwards and the contracting wire reel 6 moves upwards, the uppermost and lowermost corrugated pipes 18 follow the stretching, and the middle corrugated pipe 18 is contracted, the corrugated pipes 18 protect the threaded connection between the bidirectional screw rod 7 and the expanding wire reel 5 and the contracting wire reel 6 in all directions without affecting the rotation of the bidirectional screw rod 7 and the movement of the expanding wire reel 5 and the contracting wire reel 6, avoid dust or debris from entering to affect the cooperation efficiency, the motor two 12 is closed through the control switch group 17 and the motor one 8 is operated, the output shaft of the motor one 8 rotates to drive the bidirectional screw rod 7 to rotate, when the bidirectional screw rod 7 rotates forward, the bidirectional screw rod 7 rotates to make the expanding wire reel 5 move downwards and the contracting wire reel 6 move upwards, and the positioning rods 4 provide guiding and limiting effects for the movement of the expanding wire reel 5 and the contracting wire reel 6, avoid the expanding wire reel 5 and the contracting wire reel 6 from following the rotation of the bidirectional screw rod 7, the expanding wire reel 5 moves downwards to drive the upper end of the four steel wire ones 24 to move downwards,The downward release of the steel wire one 24 is realized, and the contraction of the steel wire disc 6 moves up to drive the upper end of the four steel wire two 25 to move up, the lower end of the steel wire two 25 pulls the corresponding grabbing handle 27 to rotate to the direction close to the center of the loading and unloading seat 1 through the radially adjacent fixed seat one 26, thereby making the radially adjacent grabbing arms 21 connected with each other rotate under the action of the connecting bolt, and rotating from bottom to top to the direction close to the center of the loading and unloading seat 1 in turn, thereby realizing the grabbing of the rubble, and the radially adjacent grabbing arms 21 and the grabbing claws of the grabbing handle 27 can be effectively matched with the rubble through the rotation of the grabbing arms 21 in turn, thereby improving the stability of the rubble grabbing. When the bidirectional screw rod 7 rotates reversely, the rotation of the bidirectional screw rod 7 makes the expansion steel wire disc 5 move up, and the contraction steel wire disc 6 move down, the upward movement of the expansion steel wire disc 5 drives the upper end of the four steel wire one 24 to move up, thereby realizing the upward contraction of the steel wire one 24, and the downward movement of the contraction steel wire disc 6 drives the upper end of the four steel wire two 25 to move down, the lower end of the steel wire one 24 pulls the corresponding grabbing handle 27 to rotate away from the center of the loading and unloading seat 1 through the radially adjacent fixed seat two, thereby making the radially adjacent grabbing arms 21 connected with each other rotate under the action of the connecting bolt, and rotating from bottom to top to the direction away from the center of the loading and unloading seat 1 in turn, thereby realizing the release of the rubble, and the rotation of the auxiliary wheels one 14, the auxiliary wheels two 15 and the auxiliary wheels three 16 all assist the stable movement of the radially adjacent steel wire two 25 during the contraction and release of the steel wire one 24 and the steel wire two 25.

[0023] Wherein: the upper end of the top plate 9 is fixedly connected with the protective cover 10, the upper end of the protective cover 10 is rotatably connected with the lower end of the connecting seat 11, the upper end of the connecting seat 11 is provided with the motor two 12, the lower end of the output shaft of the motor two 12 is fixedly connected with the upper end of the protective cover 10, the input end of the motor two 12 is electrically connected with the output end of the control switch group 17, the upper end of the connecting seat 11 is fixedly connected with the mounting plate 13 through evenly distributed support columns, the inside of the mounting plate 13 is provided with evenly distributed mounting holes, the operation of the motor two 12 is realized through the control switch group 17, the output shaft of the motor two 12 rotates to drive the protective cover 10 to rotate, the protective cover 10 rotates to drive the top plate 9 to rotate, the top plate 9 rotates to drive the loading and unloading seat 1 to rotate through the outer support rod 3, the loading and unloading seat 1 rotates to realize the rotation of the grabbing mechanism 2, and the direction adjustment of the grabbing claw is realized.

[0024] The utility model provides a kind of working principle of rough stone grab claw on engineering as follows: in working, personnel first connects the mounting hole of mounting plate 13 with the thread hole of external equipment stably by bolt, and then realize the stable installation of rough stone grab claw on engineering, and then personnel realizes motor two 12 operation by control switch group 17, the output shaft rotation of motor two 12 drives protective cover 10 rotation, protective cover 10 rotation drives top plate 9 rotation, and top plate 9 rotation drives mounting and dismounting seat 1 rotation by outer support rod 3, and mounting and dismounting seat 1 rotation further realizes the rotation of grabbing mechanism 2, and the direction adjustment of entering the realization of grab claw direction, when grabbing mechanism 2 reaches the required direction, personnel closes motor two 12 and realizes motor one 8 operation by control switch group 17, and the output shaft rotation of motor one 8 drives the rotation of bidirectional screw rod 7, when bidirectional screw rod 7 rotates forward, the rotation of bidirectional screw rod 7 makes that expansion wire reel 5 moves down, and retractable wire reel 6 moves up, while positioning rod 4 provides guiding and limiting action for the movement of expansion wire reel 5 and retractable wire reel 6 respectively, avoid expansion wire reel 5 and retractable wire reel 6 follow bidirectional screw rod 7 rotation, and the upper end of four steel wire one 24 moves down by expansion wire reel 5 moves down, realize the downward release of steel wire one 24, and the upper end of four steel wire two 25 moves up by retractable wire reel 6 moves up, and the lower end of steel wire two 25 all pull corresponding grab handle 27 to the direction of being close to the center of mounting and dismounting seat 1 rotation by radially adjacent fixed seat one 26, further make radially adjacent grab arm 21, which is rotatably connected under the action of connecting bolt, rotate to the direction of being close to the center of mounting and dismounting seat 1 from bottom to top in turn, further realize the grabbing of rough stone, and the grab claw of radially adjacent grab arm 21 and grab handle 27 can be effectively matched with rough stone by the rotation of grab arm 21 in turn, improve the stability of rough stone grabbing, when bidirectional screw rod 7 reverses, the rotation of bidirectional screw rod 7 makes that expansion wire reel 5 moves up, and retractable wire reel 6 moves down, and the upper end of four steel wire one 24 moves up by expansion wire reel 5 moves up, realize the upward contraction of steel wire one 24, and the upper end of four steel wire two 25 moves down by retractable wire reel 6 moves down, and the lower end of steel wire one 24 all pull corresponding grab handle 27 to the direction of being away from the center of mounting and dismounting seat 1 rotation by radially adjacent fixed seat two, further make radially adjacent grab arm 21, which is rotatably connected under the action of connecting bolt, rotate to the direction of being away from the center of mounting and dismounting seat 1 from bottom to top in turn, further realize the release of rough stone, and the rotation of auxiliary wheel one 14 in the contraction and release process of steel wire one 24 and steel wire two 25, auxiliary radially adjacent steel wire one 24 moves stably, the rotation of auxiliary wheel two 15 and auxiliary wheel three 16 all auxiliary radially adjacent steel wire two 25 moves stably, when expansion wire reel 5 moves up, retractable wire reel 6 moves down, the uppermost and lowermost corrugated pipe 18 follow contraction, while the middle corrugated pipe 18 stretches, when expansion wire reel 5 moves down, retractable wire reel 6 moves up, the uppermost and lowermost corrugated pipe 18 follow stretching, while the middle corrugated pipe 18 contracts,The bellows 18 protects the threaded connection between the bidirectional screw 7 and the expanding wire reel 5 and the contracting wire reel 6 in all directions without affecting the rotation of the bidirectional screw 7 and the movement of the expanding wire reel 5 and the contracting wire reel 6, so as to avoid dust or debris from entering to affect the working cooperation efficiency.

[0025] It is worth noting that the control switch group 17 disclosed in the above embodiment is provided with a control button corresponding to and controlling the switch of the motor one 8 and the motor two 12.

[0026] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An engineered ragstone gripper, characterised in that: It includes the loading and unloading seat (1); The loading and unloading seat (1) is provided with a grabbing mechanism (2) at the lower end, the grabbing mechanism (2) comprises grabbing arms (21) and grabbing handles (27), the grabbing arms (21) are uniformly arranged at the lower end of the loading and unloading seat (1), the upper ends of the uppermost grabbing arms (21) are rotatably connected with the lower end of the loading and unloading seat (1), connecting pins are rotatably connected between vertically adjacent grabbing arms (21), the lower ends of the lowermost grabbing arms (21) are rotatably connected with the grabbing handles (27), and the four grabbing handles (27) are cooperatively installed.

2. A engineered fieldstone grabber according to claim 1, wherein: The grabbing mechanism (2) further comprises steel wire positioning rings one (22), steel wire positioning rings two (23), steel wires one (24), steel wires two (25) and fixed seats one (26), the steel wire positioning rings one (22) are fixedly connected to the middle parts of the side surfaces of the grabbing arms (21) away from the center of the loading and unloading seat (1), the steel wires one (24) penetrate between the interiors of the radially adjacent steel wire positioning rings one (22), the steel wire positioning rings two (23) are fixedly connected to the middle parts of the side surfaces of the grabbing arms (21) close to the center of the loading and unloading seat (1), the steel wires two (25) penetrate between the interiors of the radially adjacent steel wire positioning rings two (23), the fixed seats one (26) are fixedly connected to the middle parts of the side surfaces of the grabbing handles (27) close to the center of the loading and unloading seat (1), the middle parts of the fixed seats one (26) are fixedly connected with the lower ends of the radially adjacent steel wires two (25), and the fixed seats two are fixedly connected to the middle parts of the side surfaces of the grabbing handles (27) away from the center of the loading and unloading seat (1), the middle parts of the fixed seats two are fixedly connected with the lower ends of the radially adjacent steel wires one (24).

3. An engineered fieldstone grabber according to claim 2, wherein: The upper ends of the loading and unloading seat (1) are fixedly connected with uniformly distributed positioning rods (4), the upper ends between the four positioning rods (4) are slidably connected with an expanding steel wire disc (5), the upper ends of the steel wires one (24) are fixedly connected with the upper end of the expanding steel wire disc (5), the lower ends between the four positioning rods (4) are slidably connected with a retracting steel wire disc (6), and the upper ends of the four steel wires two (25) are fixedly connected with the lower end of the retracting steel wire disc (6).

4. An engineered fieldstone grabber according to claim 2, wherein: The upper ends of the loading and unloading seat (1) are fixedly connected with uniformly distributed supports one, the upper ends of the supports one are rotatably connected with auxiliary wheels one (14), the auxiliary wheels one (14) are cooperatively installed with the middle parts of the radially adjacent steel wires one (24), the lower surfaces of the loading and unloading seat (1) are fixedly connected with uniformly distributed supports two, the lower ends of the supports two are rotatably connected with auxiliary wheels two (15), the lower surfaces of the loading and unloading seat (1) are fixedly connected with uniformly distributed supports three, the lower ends of the supports three are rotatably connected with auxiliary wheels three (16), and the radially adjacent auxiliary wheels two (15) and auxiliary wheels three (16) are cooperatively installed with the middle parts of the same steel wire two (25).

5. An engineered fieldstone grabber according to claim 3, wherein: The left side of the loading and unloading seat (1) is provided with a control switch group (17), and the input end of the control switch group (17) is electrically connected with an external power supply.

6. An engineered fieldstone grabber according to claim 5, wherein: The upper end of the loading and unloading seat (1) is fixedly connected with uniformly distributed outer supporting rods (3), the upper ends of four outer supporting rods (3) are fixedly connected with a top plate (9), the top plate (9) and the loading and unloading seat (1) are rotationally connected with a bidirectional screw rod (7), the expansion wire reel (5) and the contraction wire reel (6) are respectively threadedly connected with the corresponding ends of the bidirectional screw rod (7), the upper end of the top plate (9) is provided with a motor one (8), the lower end of the output shaft of the motor one (8) is fixedly connected with the upper end of the bidirectional screw rod (7), and the input end of the motor one (8) is electrically connected with the output end of the control switch group (17).

7. An engineered fieldstone grabber according to claim 6, wherein: The upper end of the top plate (9) is fixedly connected with a protective cover (10), the upper end of the protective cover (10) is rotationally connected with the lower end of a connecting seat (11), the upper end of the connecting seat (11) is provided with a motor two (12), the lower end of the output shaft of the motor two (12) is fixedly connected with the upper end of the protective cover (10), the input end of the motor two (12) is electrically connected with the output end of the control switch group (17), and the upper end of the connecting seat (11) is fixedly connected with a mounting plate (13) through uniformly distributed supporting columns.

8. An engineered fieldstone grabber according to claim 6, wherein: The lower end of the top plate (9) and the upper end of the expansion wire reel (5) are fixedly connected with a corrugated pipe (18), the upper end of the loading and unloading seat (1) and the lower end of the contraction wire reel (6) are also fixedly connected with the corrugated pipe (18), and the lower end of the expansion wire reel (5) and the upper end of the contraction wire reel (6) are also fixedly connected with the corrugated pipe (18), three corrugated pipes (18) are movably sleeved on the outer surface of the bidirectional screw rod (7).

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