Compact type multi-petal lotus bucket gripping apparatus

Abstract

The invention provides a compact type multi-petal lotus bucket gripping apparatus which integrates 360-degree full rotation, multi-oil-cylinder cooperative work, diversion block integrated design and efficient mounting of a support. The base is driven by the rotating motor to rotate, a plurality of circumferentially-distributed hinged supports are arranged between an upper barrel and a lower barrel of the base, and the oil cylinders and the claw arms are connected to achieve the grabbing action. The flow dividing block is arranged in the lower barrel of the base, an oil inlet channel and an oil return channel are integrated, pipeline layout is simplified, hydraulic elements are protected, the size of the gripper is remarkably compressed, and portability and space adaptability are enhanced. And the claw arms are provided with reinforced structures, so that wear resistance and heavy-load capacity are improved. And the mounting bracket adopts a V-shaped bent structure, so that the crane is convenient to mount and transport and limit, the space is saved, and the cost is reduced. The mechanism is compact in structure and comprehensive in function, the flexibility, heavy load adaptability and economic benefits of the gripper are remarkably improved, and the mechanism is suitable for space-limited and efficient working environments.

Description

Technical Field

[0001] The present invention relates to the technical field of grapples, and particularly to a compact multi-petal lotus bucket grapple. Background Art

[0002] In the crane industry, with the increasing diversification of the demand for lifting functions, grab accessories, as an important means of expanding the functions of cranes, have become increasingly prominent. Especially for scrap steel grapples, such as lotus bucket grapples, they play a key role in the loading, unloading, stacking, and transfer of special materials such as slag, scrap steel, and iron filings. Although the existing lotus grapple designs have their own characteristics, such as providing power through hydraulic motors and slewing bearings, equipping safety valves to protect hydraulic devices, and designing replaceable bucket teeth to improve maintenance performance, there are still some deficiencies. For example, some designs cannot achieve 360° full rotation, which limits the flexibility of use; although the single-cylinder structure simplifies the number of components, it is not suitable for heavy-duty working conditions, affecting the grabbing efficiency and safety; while some designs aimed at improving the clamping stability often result in a large and complex mechanism, increasing the manufacturing cost and maintenance difficulty. In addition, although some designs have achieved automatic adjustment of the grapple length, they have increased the design complexity and volume at the cost of increasing the use failure rate. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a compact multi-petal lotus bucket grapple.

[0004] To solve the above technical problem, the technical solution provided by the present invention is: a compact multi-petal lotus bucket grapple, comprising:

[0005] A rotary motor, which is provided with an opening and closing oil port and a rotary oil port, and the output end is connected to the base;

[0006] The base includes an upper cylinder, a lower cylinder, and a motor mounting plate connecting the two. The motor mounting plate fixes the output end of the rotary motor; a top plate is provided at the top of the upper cylinder, and a bottom plate is provided at the bottom of the lower cylinder;

[0007] A plurality of circumferentially distributed hinge seats are arranged between the top plate and the bottom plate, and each hinge seat has an upper hinge point and a lower hinge point;

[0008] An oil cylinder and a claw arm. The cylinder body end of the oil cylinder is rotatably connected to the upper hinge point, one end of the claw arm is rotatably connected to the lower hinge point, and the piston rod end of the oil cylinder is hinged to the middle of the claw arm;

[0009] The grab pipeline system includes a flow dividing block, which is installed on the bottom plate and built inside the lower cylinder body; the flow dividing block is provided with an oil inlet confluence hole and an oil return confluence hole. A plurality of oil inlet channels are annularly distributed inside the oil inlet confluence hole, and the outer end of one of the oil inlet channels is connected to the oil outlet end of the rotary motor through a first shunt oil pipe; a plurality of oil return channels are annularly distributed inside the oil return confluence hole, and the outer end of one of the oil return channels is connected to the oil return end of the rotary motor through a second shunt oil pipe;

[0010] The oil inlet channels communicate with the cylinder cavity of the oil cylinder through oil inlet holes and a first confluence pipe, and the oil return channels communicate with the piston rod cavity of the oil cylinder through oil return holes and a second confluence pipe, so as to realize the telescopic control of multiple oil cylinders to open and close the grab arm.

[0011] Furthermore, the hinge seat includes symmetrically arranged left and right side plates, and a reinforcing bushing is welded between the two.

[0012] Furthermore, the grab arm includes parallel left and right arm plates. A sealing plate is welded on the inner sides of the two, and an upward bent plate is welded on the outer sides; a wear-resistant claw is provided at the bottom of the sealing plate, and reinforcing ribs are provided between the sealing plate and the left and right arm plates; coaxial upper and lower hinge point holes are opened on the left and right arm plates, which are respectively connected to the lower hinge point and the piston rod end of the oil cylinder.

[0013] Furthermore, it also includes a mounting seat, which consists of a limiting plate and a mounting bracket; the limiting plate is welded on the base and includes a bent plate, a hook and a nylon plate. The hook has a structure that is wider at the top and narrower at the bottom, and is welded on the inner side of the bent plate and connected to the bent plate through a reinforcing rib plate; the nylon plate is fixed on the outer side of the bent plate by bolts.

[0014] Furthermore, the mounting bracket is a V-shaped bending structure and is provided with a mounting hole and a limiting hole; the mounting hole is used for fixing to the crane, and the limiting hole is inserted and matched with the hook to realize the self-adaptive installation and transportation limit of the grab.

[0015] Furthermore, the oil inlet confluence hole and the oil return confluence hole are respectively located at the central positions of the upper and lower surfaces of the flow dividing block, and the oil inlet channels and the oil return channels are radially and evenly distributed.

[0016] Furthermore, the number of the oil cylinders is the same as the number of the hinge seats, and the cylinder cavity of each oil cylinder is correspondingly connected to the oil inlet holes circumferentially distributed on the outer circle of the upper surface of the flow dividing block through an independent first confluence pipe, and the piston rod cavity of each oil cylinder is correspondingly connected to the oil return holes circumferentially distributed on the inner circle of the upper surface of the flow dividing block through an independent second confluence pipe.

[0017] The advantages of the present invention compared with the prior art are as follows: In response to the problems existing in the existing lotus grapples, such as insufficient flexibility, poor heavy-load adaptability, complex mechanism, high failure rate, and large volume, this application proposes an innovative design solution. First of all, by optimizing the power transmission mechanism, this application realizes the 360° full rotation function of the grapple, significantly improving the flexibility and convenience of use. At the same time, adopting the multi-cylinder cooperative working mechanism effectively enhances the heavy-load adaptability of the grapple, ensuring the grasping efficiency and safety.

[0018] Especially importantly, this application introduces the design of a flow dividing block, which can hide components and internalize relevant oil pipes, greatly compressing the volume of the grapple from the structure and making the overall structure more compact. This innovation not only optimizes space utilization but also significantly enhances the portability and adaptability of the grapple, especially suitable for working environments with limited space. In addition, the design of internal oil pipes effectively protects the hydraulic pipelines, avoiding interference and damage from the external environment, extending the service life of the equipment, and reducing maintenance costs.

[0019] Furthermore, this application specially designs an installation bracket. This bracket not only solves the installation and transportation problems of the grapple, making the installation process simpler and faster, but also saves a large amount of transportation space, reduces logistics costs, and improves the overall economic benefits. This design further reflects the significant advantages of this application in terms of structural innovation and practicality.

[0020] Generally speaking, this application not only overcomes multiple defects of the prior art but also, through the innovative designs of the flow dividing block and the installation bracket, comprehensively improves the overall technical effect, economy, and practicality of the lotus grapple, providing users with a more efficient, safe, reliable, and portable solution for material handling, stacking, and transportation. Brief Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of a compact multi-petal lotus bucket grapple of this application.

[0022] Figure 2 is Figure 1 a partial structural schematic diagram observed from direction A in

[0023] Figure 3 a structural schematic diagram of the base in this application.

[0024] Figure 4 a structural schematic diagram of the claw arm in this application.

[0025] Figure 5 a structural schematic diagram of the mounting seat in this application.

[0026] Figure 6 is a split structural schematic diagram of the mounting seat in this application.

[0027] Figure 7 It is a schematic layout diagram of the pipeline system of the gripper in this application.

[0028] Figure 8 It is a schematic cross-sectional structure diagram of the flow dividing block in this application.

[0029] As shown in the figure: 1. Rotary motor, 11. Opening and closing oil port, 12. Rotary oil port, 2. Base, 21. Upper cylinder, 22. Lower cylinder, 23. Motor mounting plate, 24. Top plate, 25. Bottom plate, 3. Hinge seat, 31. Upper hinge point, 32. Lower hinge point, 33. Left side plate, 34. Right side plate, 35. Reinforcing shaft, 4. Oil cylinder, 5. Claw arm, 51. Left arm plate, 52. Right arm plate, 53. Sealing plate, 54. Wear-resistant claw, 55. Reinforcing rib, 56. Upper bent plate, 57. Upper hinge point hole, 58. Hinge point hole, 6. Flow dividing block, 61. Inlet oil confluence hole, 62. Return oil confluence hole, 63. Inlet oil channel, 64. Return oil channel, 65. Inlet oil hole, 66. Return oil hole, 71. First flow dividing oil pipe, 72. Second flow dividing oil pipe, 81. First confluence pipe, 82. Second confluence pipe, 9. Mounting seat, 91. Limiting plate, 911. Bent plate, 912. Hook, 913. Nylon plate, 914. Reinforcing rib plate, 92. Mounting bracket, 921. Mounting hole, 922. Limiting hole. Detailed implementation manners

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The specific implementation manners of the present invention will be further described below with reference to the accompanying drawings. Among them, the same components are denoted by the same reference numerals.

[0032] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0033] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Referring to Figure 1 - Figure 8 , a compact multi-petal lotus bucket gripper, comprising:

[0035] The rotary motor 1 serves as the power source of the entire gripper, integrating the rotary function and the oil supply function. It is provided with an opening and closing oil port 11 and a rotary oil port 12, and the output end is connected to the base 2. The design of the rotary motor 1 not only provides strong power support but also realizes the 360° full rotation function of the gripper, greatly improving the flexibility and efficiency of the operation.

[0036] The base 2 includes an upper cylinder body 21, a lower cylinder body 22 and a motor mounting plate 23 connecting the two. The motor mounting plate 23 fixes the output end of the rotary motor 1; a top plate 24 is provided at the top end of the upper cylinder body 21, and a bottom plate 25 is provided at the bottom end of the lower cylinder body 22, providing a strong support structure for the entire gripper.

[0037] A plurality of circumferentially distributed hinge seats 3 are provided between the top plate 24 and the bottom plate 25. Each hinge seat 3 has an upper hinge point 31 and a lower hinge point 32. The design of the hinge seat 3 enables the claw arm 5 to rotate around it, thereby realizing the opening and closing actions of the gripper.

[0038] An oil cylinder 4 and a claw arm 5. The cylinder body end of the oil cylinder 4 is rotatably connected to the upper hinge point 31, one end of the claw arm 5 is rotatably connected to the lower hinge point 32, and the piston rod end of the oil cylinder 4 is hinged to the middle of the claw arm 5; through the telescopic movement of the oil cylinder 4, the claw arm 5 can be driven to rotate around the hinge point, thereby realizing the grasping and releasing functions of the gripper.

[0039] The gripper pipeline system includes a flow dividing block 6. The flow dividing block 6 is installed on the bottom plate 25 and is built into the lower cylinder body 22; the flow dividing block 6 is provided with an oil inlet confluence hole 61 and an oil return confluence hole 62, and usually the outer ports of the oil inlet confluence hole 61 and the oil return confluence hole 62 are sealed by sealing plugs. A plurality of oil inlet channels 63 are annularly distributed inside the oil inlet confluence hole 61, and the outer end of one of the oil inlet channels 63 is connected to the oil outlet end of the rotary motor 1 through a first shunt oil pipe 71; a plurality of oil return channels 64 are annularly distributed inside the oil return confluence hole 62, and the outer end of one of the oil return channels 64 is connected to the oil return end of the rotary motor 1 through a second shunt oil pipe 72; the oil inlet channels 63 communicate with the cylinder cavity of the oil cylinder 4 through oil inlet holes 65 and a first confluence pipe 81, and the oil return channels 64 communicate with the piston rod cavity of the oil cylinder 4 through oil return holes 66 and a second confluence pipe 82, realizing the telescopic control of a plurality of oil cylinders 4 to open and close the claw arm 5. The pipeline system is hidden inside the lower cylinder body 22 and is connected to the oil cylinder 4 through the U-shaped outlet pipe hole of the lower cylinder body 22. To ensure the reasonable arrangement of the oil pipes, the first confluence pipe 81 and the second confluence pipe 82 are arranged in a cross manner;

[0040] The hinge seat 3 includes symmetrically arranged left side plates 33 and right side plates 34, and a reinforcing bushing 35 is welded between the two. This design not only improves the strength and stability of the hinge seat, but also facilitates the connection of the oil cylinder 4 and the claw arm 5.

[0041] The claw arm 5 includes a left arm plate 51 and a right arm plate 52 arranged in parallel. A sealing plate 53 is welded on the inner sides of the two, and an upward-bending plate 56 is welded on the outer sides. A wear-resistant claw 54 is provided at the bottom of the sealing plate 53, and reinforcing ribs 55 are provided between the sealing plate 53 and the left arm plate 51 and the right arm plate 52. Coaxial upper hinge point holes 57 and lower hinge point holes 58 are opened on the left arm plate 51 and the right arm plate 52, which are respectively connected to the lower hinge point 32 and the piston rod end of the oil cylinder 4. The sealing plate 53 is a bent part. After the gripper is closed, a plurality of sealing plates 53 are closed to form a lotus-shaped enclosed space, which can realize the grasping of scattered and small materials. And according to the use working conditions, the shape of the sealing plate 53 can be adjusted to form a non-closed lotus-shaped space for grasping larger materials. The tail of the claw arm 5 uses a high-strength wear-resistant claw 54 to enhance the wear resistance of the gripper.

[0042] To solve the problems of the placement and transportation of the gripper, the present invention also designs a mounting seat 9, which is composed of a limiting plate 91 and a mounting bracket 92; the limiting plate 91 is welded on the base 2 and includes a bent plate 911, a hook 912 and a nylon plate 913. The hook 912 has a structure that is wider at the top and narrower at the bottom, and a guiding fillet is designed at the lower end to facilitate the cooperation between the limiting plate 91 and the mounting bracket 92 to realize the limiting and placement of the gripper; it is welded on the inner side of the bent plate 911 and is connected to the bent plate 911 through a reinforcing rib plate 914; the nylon plate 913 is fixed on the outer side of the bent plate 911 by bolts.

[0043] The mounting bracket 92 is a V-shaped bent structure, and is provided with a mounting hole 921 and a limiting hole 922; the mounting hole 921 is used to be fixed on the crane, and the limiting hole 922 is inserted and matched with the hook 912 to realize the self-adaptive installation and transportation limit of the gripper. The limiting plate 91 is fixed on the base 2 by welding, and the mounting bracket 92 can be placed according to the specific installation position of the gripper. During transportation, the gripper can be self-adaptively placed on the crane through the mounting seat 9; specifically, when the gripper is placed, the limiting plate 91 slides, and the hook 912 gradually enters the limiting hole 922 of the mounting bracket 92, and when the limiting position is reached, the gripper is completed and fixed.

[0044] In this embodiment, the oil inlet confluence hole 61 and the oil return confluence hole 62 are respectively located at the center positions of the upper and lower surfaces of the flow dividing block 6, and the oil inlet channel 63 and the oil return channel 64 are radially and evenly distributed. This design not only ensures the uniform distribution of the hydraulic oil, but also improves the stability and reliability of the oil circuit.

[0045] The number of the oil cylinders 4 is the same as the number of the hinge seats 3, and the cylinder cavity of each oil cylinder 4 is correspondingly connected to the oil inlet holes 65 distributed in a circle on the outer ring of the upper surface of the flow dividing block 6 through an independent first confluence pipe 81, and the piston rod cavity of each oil cylinder 4 is correspondingly connected to the oil return holes 66 distributed in a circle on the inner ring of the upper surface of the flow dividing block 6 through an independent second confluence pipe 82. This one-to-one connection method ensures that each oil cylinder 4 can obtain sufficient hydraulic power support and realizes the precise control of the gripper.

[0046] The lower cylinder body 22 is provided with a U-shaped outlet pipe hole for arranging hydraulic oil pipes. This design not only protects the hydraulic pipeline from external environmental interference and damage, but also makes the structure of the entire grab more compact and beautiful.

[0047] Working principle: When hydraulic oil enters one of the oil inlet channels 63 through the first shunt oil pipe 71, the hydraulic oil in this oil inlet channel 63 will enter the oil inlet confluence hole 61 and converge with the hydraulic oil from other oil inlet channels 63. Then, this hydraulic oil will enter the cylinder cavity of the oil cylinder 4 through the oil inlet hole 65 and the first confluence pipe 81, thereby pushing the piston rod of the oil cylinder 4 to extend. The extension of the piston rods of multiple oil cylinders 4 will drive multiple claw arms 5 to rotate around the hinge points and close, forming a lotus-shaped closed space.

[0048] When hydraulic oil enters the second shunt oil pipe 72 through the opening and closing oil port 11 of the rotary motor 1, the hydraulic oil in this second shunt oil pipe 72 will enter one of the oil return channels 64 and enter the oil return confluence hole 62 from this oil return channel 64. Then, this hydraulic oil will enter the piston rod cavity of the oil cylinder 4 through the oil return hole 66 and the second confluence pipe 82, thereby pushing the piston rod of the oil cylinder 4 to retract. The retraction of the piston rods of multiple oil cylinders 4 will drive multiple claw arms 5 to rotate around the hinge points and open, releasing the grabbed material.

[0049] Through the rotation function of the rotary motor 1, 360° full rotation of the grab can be achieved, greatly improving the flexibility and efficiency of the operation. At the same time, due to the design of internal hiding of components and internal placement of oil pipes, the structure of the entire grab is more compact and beautiful, protecting the hydraulic pipeline from external environmental interference and damage.

[0050] In summary, a compact multi-petal lotus bucket grab of the present invention has the advantages of compact structure, powerful function, strong adaptability, etc. Its design of internal hiding of components and internal placement of oil pipes compresses the volume of the grab from the structure and protects the hydraulic pipeline; at the same time, the design of the mounting bracket not only solves the installation and transportation problems of the grab, but also saves a large amount of transportation space. These advantages make the present invention more adaptable to the working characteristics of small, light, flexible and fast transportation of truck-mounted cranes, and have broad market application prospects.

[0051] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A compact multi-petal lotus bucket grab, characterized in that, Comprising: A rotary motor (1) provided with an opening and closing oil port (11) and a rotary oil port (12), and its output end is connected to a base (2); The base (2) includes an upper cylinder body (21), a lower cylinder body (22) and a motor mounting plate (23) connecting the two. The motor mounting plate (23) fixes the output end of the rotary motor (1); a top plate (24) is provided at the top of the upper cylinder body (21), and a bottom plate (25) is provided at the bottom of the lower cylinder body (22); A plurality of circumferentially distributed hinge seats (3) are provided between the top plate (24) and the bottom plate (25). Each hinge seat (3) has an upper hinge point (31) and a lower hinge point (32); An oil cylinder (4) and a claw arm (5). The cylinder body end of the oil cylinder (4) is rotatably connected to the upper hinge point (31), one end of the claw arm (5) is rotatably connected to the lower hinge point (32), and the piston rod end of the oil cylinder (4) is hinged to the middle of the claw arm (5); A gripper pipeline system, including a manifold block (6). The manifold block (6) is installed on the bottom plate (25) and is built inside the lower cylinder body (22); the manifold block (6) is provided with an oil inlet confluence hole (61) and an oil return confluence hole (62). A plurality of oil inlet channels (63) are annularly distributed inside the oil inlet confluence hole (61), and the outer end of one of the oil inlet channels (63) is connected to the oil outlet end of the rotary motor (1) through a first shunt oil pipe (71); a plurality of oil return channels (64) are annularly distributed inside the oil return confluence hole (62), and the outer end of one of the oil return channels (64) is connected to the oil return end of the rotary motor (1) through a second shunt oil pipe (72); The oil inlet channel (63) communicates with the cylinder chamber of the oil cylinder (4) through an oil inlet hole (65) and a first confluence pipe (81), and the oil return channel (64) communicates with the piston rod chamber of the oil cylinder (4) through an oil return hole (66) and a second confluence pipe (82), so as to realize the telescopic control of the plurality of oil cylinders (4) to open and close the claw arm (5).

2. The compact multi-petal lotus bucket grapple according to claim 1, characterized in that, The hinge seat (3) includes a left side plate (33) and a right side plate (34) symmetrically arranged, and a reinforcing shaft sleeve (35) is welded between the two.

3. The compact multi-petal lotus bucket grab according to claim 1, characterized in that The claw arm (5) includes a left arm plate (51) and a right arm plate (52) arranged in parallel. A sealing plate (53) is welded on the inner side of the two, and an upper bent plate (56) is welded on the outer side; a wear-resistant claw (54) is provided at the bottom of the sealing plate (53), and reinforcing ribs (55) are provided between the sealing plate (53) and the left arm plate (51) and the right arm plate (52); coaxial upper hinge point holes (57) and lower hinge point holes (58) are opened on the left arm plate (51) and the right arm plate (52), which are respectively connected to the lower hinge point (32) and the piston rod end of the oil cylinder (4).

4. A compact multi-petal lotus bucket grab according to claim 1, characterized in that, It further includes a mounting seat (9), which is composed of a limiting plate (91) and a mounting bracket (92); the limiting plate (91) is welded on the base (2) and includes a bent plate (911), a hook (912) and a nylon plate (913). The hook (912) has a structure that is wider at the top and narrower at the bottom, and is welded on the inner side of the bent plate (911) and is connected to the bent plate (911) through a reinforcing rib plate (914); the nylon plate (913) is fixed to the outer side of the bent plate (911) by bolts.

5. A compact multi-petal lotus bucket grab according to claim 4, characterized in that, The mounting bracket (92) is of a V-shaped bending structure and is provided with a mounting hole (921) and a limiting hole (922); the mounting hole (921) is used for being fixed to the crane, and the limiting hole (922) is inserted and matched with the hook (912) to realize the self-adaptive installation and transportation limitation of the gripper.

6. The compact multi-petal lotus bucket grab according to claim 1, characterized in that, The oil inlet confluence hole (61) and the oil return confluence hole (62) are respectively located at the central positions of the upper and lower surfaces of the flow dividing block (6), and the oil inlet channel (63) and the oil return channel (64) are radially and evenly distributed.

7. A compact multi-petal lotus bucket grab according to claim 1, characterized in that, The number of the oil cylinders (4) is the same as that of the hinge seats (3), and the cylinder barrel cavity of each oil cylinder (4) is correspondingly connected to the oil inlet holes (65) distributed in a circle on the outer ring of the upper surface of the flow dividing block (6) through an independent first confluence pipe (81), and the piston rod cavity of each oil cylinder (4) is correspondingly connected to the oil return holes (66) distributed in a circle on the inner ring of the upper surface of the flow dividing block (6) through an independent second confluence pipe (82).

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