Rotary electric steel grabbing machine

Abstract

The utility model relates to the technical field of steel grabber, in particular to a rotary electric steel grabber, which comprises a base, a platform seat, a hydraulic control arm and a hydraulic driving unit, the end part of the hydraulic control arm is connected with a steel grabber, the steel grabber comprises a disc body and a connecting frame, the excircle surface of the disc body is rotatably provided with a rotating frame extending downwards, and the rotating frame is connected with the hydraulic driving unit. The lower end of the rotating frame is evenly and rotationally connected with at least two grabbing claws, the upper end of each grabbing claw is provided with a pressing arm, the end of each pressing arm is connected with an end block, the side face of each end block is provided with a pressing opening, the upper surface of the disc body is provided with a hydraulic cylinder, and the lower end of the hydraulic cylinder is connected with a pressing block. Through the improved design of the steel grabber, the problem that a hydraulic pipeline is easily wound and disordered in the process that the hydraulic cylinder rotates along with the rotating frame to be adjusted can be solved, the whole steel grabber structure can be simpler, faults are not prone to occurring, and the operation stability of the whole steel grabber is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel grabbers, and specifically discloses a rotary electric steel grabber. Background Art

[0002] As the name suggests, a steel grabber is a machine used to grab steel materials and steel products. It is derived from the specialization of an ordinary crane and is mainly designed for the grabber at the end of the arm, so that it can grab and load various materials such as scrap steel and steel products.

[0003] The existing steel grabber adopts a rotary connection between the steel grabber and its hydraulic arm, so that it can rotate and adjust its angle relative to the material when grabbing the material, thereby obtaining a better grabbing effect. For example, the utility model patent with application number 2020225280002 discloses a scrap steel hydraulic rotary grabbing device, including a steel grabbing mounting frame, four steel grabbing heads are evenly installed on the outer side of the bottom end of the steel grabbing mounting frame, the steel grabbing mounting frame and the steel grabbing heads are connected through four grabbing oil cylinders, and the upper end surface of the steel grabbing mounting frame is fixedly installed with four fixed mounting side plates, and the upper end of one of the fixed mounting side plates is fixedly installed with a limited position frame, and one side of the fixed mounting side plate is located on the upper end surface of the steel grabbing mounting frame. A fixed connecting rod is installed on the inner side of the upper end of the fixed connecting rod, and a connecting column is installed on the outer side of the upper end of the connecting column. A connecting sleeve is installed on the outer side of the upper end of the connecting sleeve, and an angle adjustment frame is installed on the outer side of the upper end of the connecting sleeve. The upper end surface of the angle adjustment frame is installed with a transmission motor. Although the steel grabber disclosed in the patent can realize the rotation adjustment of the grab bucket angle under the action of the transmission motor, the four oil cylinders on the grab bucket are connected between the mounting frame and the steel grab head, and the oil inlet and outlet pipelines on the oil cylinders usually extend along the hydraulic arm to the machine base and connect to the hydraulic pump and oil tank. This causes the pipelines on the four oil cylinders to be easily entangled and disordered during the rotation adjustment of the grab bucket, and the grab bucket cannot be rotated 360 degrees. After each grabbing, it needs to be rotated and reset to ensure that the pipelines can be straightened. Based on the above-mentioned shortcomings of the existing scrap steel hydraulic rotary grabbing device, this application proposes a rotary electric steel grabber that can effectively solve the above-mentioned technical problems. Utility Model Content

[0004] The utility model mainly provides a rotary electric steel grabber to solve the shortcomings of the existing scrap steel hydraulic rotary grabbing device, which easily causes the pipelines on the oil cylinder to become tangled and disordered during the rotation of the steel grabbing head, and needs to be rotated and reset after the material is grabbed.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A rotary electric steel grabber comprises a base, a platform seat, a hydraulic control arm and a hydraulic drive unit, wherein the end of the hydraulic control arm is connected to a steel grabber, and the steel grabber comprises a disc body and a connecting frame, wherein the connecting frame is fixed on the upper surface of the disc body and connected to the end of the hydraulic control arm, and a rotating frame extending downward is rotatably mounted on the outer circumference of the disc body, and an electric drive assembly for driving the rotating frame to rotate is arranged on the disc body;

[0007] The lower end of the rotating frame is evenly rotatably connected to no less than two grabbing claws, and the upper end of each grabbing claw is provided with a pressing arm that bends and extends toward the center just below the disc body, and the end of each pressing arm is connected to an end block, and a pressing opening is opened on the side of the end block facing the central axis of the disc body, and a hydraulic cylinder is provided on the upper surface of the disc body, and the lower end of the hydraulic cylinder is connected to a pressing block, and the pressing block and the pressing openings on all the end blocks are arranged to work together.

[0008] As a further configuration of the above solution, the base is fixed on the ground, the platform seat is arranged at the upper end of the base, and the other end of the hydraulic control arm and the hydraulic drive unit are both arranged on the platform seat.

[0009] As a further configuration of the above scheme, the platform seat is rotatably arranged on the upper end of the base through a column at the lower end, and a driving source for driving the platform seat to rotate is arranged on the base.

[0010] As a further configuration of the above scheme, a limited annular slide rail is arranged on the outer circular surface of the disc body, and the rotating frame includes a ring frame that acts on the limited annular slide rail, and no less than two rotating connecting seats are evenly arranged on the lower end of the ring frame, and each of the grabbing claws is rotatably connected to the corresponding rotating connecting seat through a pin shaft.

[0011] As a further configuration of the above scheme, the electric drive assembly includes a reduction motor fixedly mounted on the upper surface of the disc body, the lower end of the motor shaft of the reduction motor is connected to a driving gear, and the lower end of the inner wall of the ring frame is provided with an inner gear ring meshing with the driving gear.

[0012] As a further configuration of the above solution, both upper and lower ends of the pressing block are truncated cone-shaped, and the cross-section of the pressing port is configured to be a trapezoidal shape that matches the pressing block.

[0013] Beneficial effects:

[0014] The rotary electric steel grabber disclosed in the utility model improves the design of the steel grabber, controls the up and down movement of the pressing block under the action of the hydraulic cylinder, and then, through the action between the pressing block and the pressure port on the end block, can synchronously drive all the grab claws to open or close under the action of the lever principle, and at the same time, can synchronously realize the synchronous rotation of all the grab claws to adjust the grab angle under the action of the rotating frame. In addition, the above-mentioned design of the entire steel grabber does not need to use an independent hydraulic cylinder on the rotating frame to control the movement of the grab claws, so it can avoid the problem of the hydraulic cylinder easily causing the hydraulic pipeline to be entangled and disordered during the process of rotating and adjusting with the rotating frame, and because the hydraulic cylinder is set on the disc body and does not rotate with the rotating frame, it does not need to be rotated and reset after the material is grasped and released. The entire steel grabber can realize the entire grasping and releasing process with only one hydraulic cylinder, so that the structure of the entire steel grabber can be simpler and less prone to failure, effectively ensuring the stability of the operation of the entire steel grabber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the steel grabber in the utility model from a first angle;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the steel grabber in the utility model from a second angle;

[0018] Figure 4 It is a schematic diagram of the three-dimensional assembly structure of the steel grabber in the utility model. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0020] Example 1

[0021] Embodiment 1 discloses a rotary electric steel grabber, Figure 1-4The main body of the steel grabber includes a base 1, a platform seat 2, a hydraulic control arm 3 and a hydraulic drive unit 4. The base 1 is fixed to the ground through foot nails or embedded columns at the bottom, and the platform seat 2 is arranged at the upper end of the base 1, and then one end of the hydraulic control arm 3 and the hydraulic drive unit 4 are arranged on the platform seat 2, and a steel grabber 5 is connected to the other end of the hydraulic control arm 3. In addition, in the specific design, the platform seat 2 is rotatably arranged at the upper end of the base 1 through the column at the lower end, and a driving source 6 for driving the column at the lower end of the platform seat 2 to rotate is arranged on the base 1, so that after grabbing the material, the entire hydraulic control arm 3 and the steel grabber 5 can be rotated to realize the transfer of the material.

[0022] The key improvement design of this embodiment lies in the structural design of the steel grabber 5, which includes a disc body 501 and a connecting frame 502. The connecting frame 502 is fixedly welded on the upper surface of the disc body 501 and connected to the end of the hydraulic control arm 3. A limited annular slide rail 5011 is set on the outer circumference of the disc body 501, and then a rotating frame 503 extending downward is installed on the outer circumference of the disc body 501. The rotating frame 503 includes a ring frame that interacts with the limited annular slide rail 5011, and at least two rotating connection seats 504 are evenly arranged at the lower end of the ring frame, and then a grab claw 505 is rotatably connected to each rotating connection seat 504 through a pin shaft. In the specific design, the rotating connection seat 504 and the grab claw 505 in this embodiment 1 are both provided with four, and the four grab claws 505 are evenly arranged in a circular array.

[0023] A pressing arm 506 is provided at the upper end of each grabbing claw 505, which is bent and extended toward the center of the disc body 501, and then an end block 507 is connected to the end of each pressing arm 506, and a pressing port 5071 is provided on the side of the end block 507 facing the central axis of the disc body 501. A hydraulic cylinder 508 is provided on the upper surface of the disc body 501, and a pressing block 509 is connected to the lower end of the hydraulic cylinder 508, and the pressing block 509 and the pressing ports 5071 on all the end blocks 507 are arranged to act together. In the specific design, the upper and lower ends of the pressing block 509 in this embodiment are both truncated cone-shaped, and then the cross-section of the pressing port 5071 is set to a trapezoidal shape matching the pressing block 509, so that the pressing block 509 can act on the pressing port 5071 during the upward or downward movement, thereby realizing the rotation of the grabbing claw 505.

[0024] An electric drive assembly for driving the rotating frame 503 to rotate is arranged on the disc body 501, and the electric drive assembly includes a reduction motor 510 fixedly arranged on the upper surface of the disc body 501, and the lower end of the motor shaft of the reduction motor 510 is connected to a driving gear 511, and then an inner gear ring 5031 meshing with the driving gear 511 is arranged at the lower end of the inner wall of the ring frame, so that the rotating frame 503 can be rotated at a fixed angle under the power input of the reduction motor 510 and the meshing transmission of the gear and the gear ring.

[0025] Finally, it should be noted that the hydraulic cylinder 508 in the rotary electric steel grabber and the hydraulic telescopic rod on the hydraulic control arm 3 are connected to the hydraulic drive unit 4 on the platform seat 2 through pipelines.

[0026] The specific use method and working principle of the rotary electric steel grabber in this embodiment 1 are as follows:

[0027] According to the location of the material, the driving source 6 is first started to rotate and adjust the entire platform seat 2, and then the steel grabber 5 is moved to the top of the material through the hydraulic control arm 3. Next, the piston rod of the hydraulic cylinder 508 is extended, and then acts on the lower surface of the upper pressure opening 5071 of all end blocks while the pressing block 509 is pressed down, so that the lower ends of all grabbing claws 505 are opened under the action of the lever principle. Then, according to the shape and placement of the material, the reduction motor 510 is started, and the rotating frame 503 and all grabbing claws 505 are rotated and adjusted to the best angle for grabbing the material under the meshing transmission of the driving gear 511 and the inner gear ring 5031.

[0028] Finally, the piston rod of the hydraulic cylinder 508 is controlled to retract, and then acts on the upper surface of the pressure opening 5071 of all the end blocks while the pressing block 509 moves upward, and all the grabbing claws 505 are brought together under the action of the lever principle to grab the material. After grabbing, the material is moved to the position to be placed by controlling the rotation of the platform seat 2 and the action of the hydraulic control arm 3.

[0029] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A rotary electric steel grabber, comprising a base (1), a platform seat (2), a hydraulic control arm (3) and a hydraulic drive unit (4), wherein the end of the hydraulic control arm (3) is connected to a steel grabber (5), characterized in that: The steel grabber (5) comprises a disc body (501) and a connecting frame (502), wherein the connecting frame (502) is fixed on the upper surface of the disc body (501) and connected to the end of the hydraulic control arm (3), and a rotating frame (503) extending downward is rotatably mounted on the outer circumferential surface of the disc body (501), and an electric drive component for driving the rotating frame (503) to rotate is arranged on the disc body (501); The lower end of the rotating frame (503) is evenly rotatably connected to no less than two grab claws (505), and the upper end of each grab claw (505) is provided with a pressing arm (506) that bends and extends toward the center just below the disc body (501), and the end of each pressing arm (506) is connected to an end block (507), and a pressing port (5071) is provided on the side of the end block (507) facing the central axis of the disc body (501), and a hydraulic cylinder (508) is provided on the upper surface of the disc body (501), and the lower end of the hydraulic cylinder (508) is connected to a pressing block (509), and the pressing block (509) and the pressing ports (5071) on all the end blocks (507) are arranged to work together.

2. The rotary electric steel grabber according to claim 1, characterized in that: The base (1) is fixed on the ground, the platform seat (2) is arranged at the upper end of the base (1), and the other end of the hydraulic control arm (3) and the hydraulic drive unit (4) are both arranged on the platform seat (2).

3. The rotary electric steel grabber according to claim 2, characterized in that: The platform seat (2) is rotatably arranged on the upper end of the base (1) via a column at the lower end, and a driving source (6) for driving the platform seat (2) to rotate is arranged on the base (1).

4. The rotary electric steel grabber according to claim 1, characterized in that: A limited annular slide rail (5011) is arranged on the outer circumferential surface of the disc body (501), and the rotating frame (503) comprises a ring frame that interacts with the limited annular slide rail (5011), and at least two rotating connecting seats (504) are evenly arranged at the lower end of the ring frame, and each of the grabbing claws (505) is rotatably connected to the corresponding rotating connecting seat (504) via a pin shaft.

5. The rotary electric steel grabber according to claim 4, characterized in that: The electric drive assembly comprises a reduction motor (510) fixedly arranged on the upper surface of the disc body (501), the lower end of the motor shaft of the reduction motor (510) is connected to a driving gear (511), and the lower end of the inner wall of the ring frame is provided with an inner gear ring (5031) meshing with the driving gear (511).

6. The rotary electric steel grabber according to claim 1, characterized in that: The upper and lower ends of the pressing block (509) are both truncated cone-shaped, and the cross-section of the pressing opening (5071) is configured to be a trapezoidal shape that matches the pressing block (509).

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