Four-rope double-valve light multipurpose grab bucket device

Abstract

The utility model relates to a four-rope double-valve light multipurpose grab bucket device which is a novel bulk cargo loading and unloading device researched and developed for loading and unloading bulk cargos in ports and piers. Comprising an upper bearing beam, a lower bearing beam, supporting rods, a bucket body, an upper pulley block and a lower pulley block, the upper bearing beam and the lower bearing beam are vertically arranged at intervals, the upper pulley block is installed in the middle of the lower end of the upper bearing beam, the lower pulley block is installed in the middle of the upper end of the lower bearing beam, and the upper pulley block and the lower pulley block are correspondingly arranged; the middle of the lower end of the lower bearing beam is hinged to one end of the upper portion of the bucket body through a main shaft, and a supporting rod is hinged to the other end of the upper portion of the bucket body. The bucket body rotates around the main shaft under traction of the guide rope, the lower end of the middle of the bucket body is opened or closed, and the bucket body is of a plate shell structure. The grab bucket adopts a main rib-free structure, so that the grabbing quantity and the grabbing ratio are increased to a certain extent, the material taking resistance is reduced, the grabbing efficiency is further improved, and bulk cargo loading and unloading are more efficient, energy-saving and environment-friendly.

Description

Technical Field

[0001] This application belongs to the technical field of loading and unloading equipment, relates to ore grabs, and specifically is a four-rope double-lobe light multi-purpose grab device. Background Art

[0002] The working characteristic of gantry discharging is that it is necessary to connect the grab to the gantry and use the grab to enter the cargo hold of the ship to take materials. The main function of this device is to transfer bulk materials back and forth between land and the ship. Usually, the weight of each material taken by a 40-ton gantry grab is about between 20 tons and 30 tons. Therefore, a heavy transport truck generally only needs 2 grabs to be filled, and the average time only takes 3 - 4 minutes.

[0003] The continuously increasing high-load bulk material handling requirements have put forward higher requirements for the grab operating conditions. Since the grab is in complete contact with the goods during the entire operation process, the durability of the grab directly affects the operation efficiency. The main factors affecting the grab operation efficiency are the volume, grabbing force, grabbing ratio, and friction force of the grab. In addition to the main factors such as the size and grabbing force of the grab itself, the interference factor affecting the grab's material grabbing is the resistance of the grab to take materials. The size of the grab's material taking resistance directly determines the wear degree and service life of the grab.

[0004] See attached Figure 1 、 Figure 2 As shown, the existing grab bucket body includes existing jaw flaps, main ribs, and connecting ribs. The existing jaw flaps are flat shovel structures mainly for supporting goods. Main ribs are arranged at the upper ends of the existing jaw flaps, and the main ribs and the jaw flaps are connected by multiple connecting ribs. The main ribs on both sides are hook structures arranged oppositely. The main ribs mainly provide support force for the jaw flaps. However, due to the relatively complex combination of the structures of the main ribs, connecting ribs, and jaw flaps, there are multiple gaps, resulting in problems of large friction force and large grabbing resistance. Summary of the Invention

[0005] The purpose of this utility model is to solve the defects of the existing technology, improve the efficiency of port bulk material handling, extend the service life, and reduce the manufacturing cost.

[0006] This application adopts the following technical solutions to achieve:

[0007] A four-rope double-lobe light multi-purpose grab device, characterized in that it includes an upper bearing beam, a lower bearing beam, a strut, a bucket body, an upper pulley group, and a lower pulley group. The upper bearing beam and the lower bearing beam are arranged at upper and lower intervals. The middle part of the lower end of the upper bearing beam is equipped with an upper pulley group, and the middle part of the upper end of the lower bearing beam is equipped with a lower pulley group. The upper pulley group and the lower pulley group are arranged correspondingly;

[0008] One end of the upper part of the bucket body is hinged to the middle part of the lower end of the lower bearing beam through a main shaft. The other end of the upper part of the bucket body is hinged with a support rod, and the other end of the support rod is hinged to the end of the upper bearing beam. The bucket body rotates around the main shaft under the traction of the guide rope, and the lower end of the middle part of the bucket body swings relatively to open or close. The bucket body is of a plate and shell structure.

[0009] Moreover, both the upper bearing beam and the lower bearing beam extend horizontally and are parallel to each other. The upper pulley block consists of two symmetrically arranged pulleys; the lower pulley block consists of four symmetrically arranged pulleys. An opening and closing rope and a hoisting rope are wound between the upper pulley block and the lower pulley block. The opening and closing rope and the hoisting rope are controlled by a motor to control the closing and opening of the bucket body.

[0010] Moreover, the bucket body includes two jaw flaps that can swing relatively to open and close. The bottom of the jaw flap is of an inclined plane structure. The inner side of the jaw flap is the opening and closing end, and the opening and closing ends of the two jaw flaps can be hermetically fitted. The upper end of the opening and closing end of the jaw flap is fixedly connected with a connecting plate, and the main shaft is hinged on the connecting plate. The upper parts of the connecting plates of the two jaw flaps overlap and are coaxially hinged on the main shaft. The main shaft is hinged to the lower bearing beam. The outer side of the jaw flap is inclined upward and fixedly connected with a support frame, and the end of the support rod is hinged on the support frame.

[0011] Moreover, the middle parts of the jaw flaps are inclined outward, and the width of the bottom of the jaw flap is greater than the distance between the connecting plates; the distance between the support frames is the same as the distance between the connecting plates.

[0012] Moreover, the support rod is of a variable cross-section box structure, and the upper and lower ends of the support rod are respectively connected with the corresponding axles of the upper bearing beam and the bucket body.

[0013] Moreover, the pulley blocks are all hot-rolled pulleys, integrally formed by pressing, and the material is 16 manganese plate.

[0014] Moreover, the upper pulley block adopts a passport-type anti-wire rope out-of-groove device, and the lower pulley block adopts a wire rope guide.

[0015] In summary, the technical solutions provided in the embodiments of the present application have the following technical effects or advantages:

[0016] 1. The grab of the present application adopts a structure without main ribs, which greatly reduces the resistance when the grab takes materials, increases the amount of goods taken, improves the efficiency of bulk cargo operations, and at the same time reduces the weight of the grab, reduces the manufacturing cost, and reduces the equipment damage rate and maintenance rate.

[0017] 2. The ore grab with a structure without main ribs of the present application reduces the material-taking resistance of the grab to a certain extent, increases the amount of material taken, improves the operation efficiency, and at the same time reduces the weight of the grab and saves the manufacturing cost.

[0018] 3. The present application discloses a grab bucket that can minimize the resistance between the grab bucket and the goods. The bucket body is designed without main ribs, which increases the working space, the grabbing capacity and the grabbing ratio of the grab bucket. The working efficiency of the grab bucket is improved, and the manufacturing cost is also saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the main structural view of the prior art.

[0020] Figure 2 is Figure 1 the right view of

[0021] Figure 3 is the main structural view of the present application.

[0022] Figure 4 is Figure 3 the right view of

[0023] Figure 5 is the structural schematic diagram of the bucket body in the present application.

[0024] Figure 6 is Figure 5 the right view of

[0025] MEANINGS OF THE REFERENCE NUMERALS: 1. upper bearing beam; 2. upper pulley block; 3. lower pulley block; 4. strut; 5. bucket body; 51. main shaft; 52. connecting plate; 53. jaw flap; 54. support frame; 55. opening and closing end; 6. lower bearing beam; 7. rope guiding device; 11. main rib; 12. connecting rib; 13. existing jaw flap DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby.

[0027] A four-rope double-flap light multi-purpose grab bucket device includes an upper bearing beam 1, a lower bearing beam 6, a strut 4, a bucket body 5, an upper pulley block 2, a lower pulley block 3 and a traction rope (not shown in the figure).

[0028] The upper bearing beam 1 and the lower bearing beam 6 are arranged at an upper and lower interval. The upper bearing beam 1 and the lower bearing beam 6 both extend horizontally and are parallel to each other. In the middle of the lower end of the upper bearing beam 1, two symmetrically arranged upper pulley groups 2 are installed; in the middle of the upper end of the lower bearing beam 6, four symmetrically arranged lower pulley groups 3 are installed, corresponding to four suspension ropes. The upper pulley group 2 and the lower pulley group 3 are arranged correspondingly, and a traction rope is wound between the upper pulley group 2 and the lower pulley group 3. The traction rope can be controlled to stretch by the traction of the traction rope motor; a rope guiding device 7 is installed at the upper end of the upper bearing beam 1 for guiding the opening and closing rope and the hoisting rope to turn and move. When the opening and closing rope between the upper pulley group 2 and the lower pulley group 3 is lengthened, the bucket body 5 descends, the length of the support rod 4 remains unchanged and only swings, thereby pulling the bucket body 5 to open; when the bucket body 5 needs to be closed, the rope guiding device 7 tightens the opening and closing rope to close the bucket body 5.

[0029] One end of the upper part of the bucket body 5 is hinged to the lower bearing beam 6 through a main shaft 51 at the middle of the lower end of the lower bearing beam 6. The other end of the upper part of the bucket body 5 is hinged to a support rod 4. The other end of the support rod 4 is hinged to the end of the upper bearing beam 1; the bucket body 5 rotates around the main shaft 51 under the traction of the traction rope, and the middle lower end of the bucket body 5 opens or closes. At the same time, the support rod 4 swings with the bucket body 5. The bucket body 5 is of a plate and shell structure, and the working surface is flat.

[0030] This light grab bucket is suitable for a double-drum hoisting mechanism crane for bulk cargo handling. It is a non-powered long support rod 4 grab bucket, and the closing and opening actions of the grab bucket are completed by two groups of independent opening and closing ropes and hoisting ropes.

[0031] See Appendix Figure 5 As shown, the bucket body 5 includes two jaw flaps 53 that can swing relatively open and close. The bottom of the jaw flap 53 is of an inclined plane structure. The inner side of the jaw flap 53 is an opening and closing end 55. The opening and closing ends 55 of the two jaw flaps 53 can be hermetically fitted; a connecting plate 52 is fixedly connected to the upper end of the opening and closing end 55 of the jaw flap 53, and the main shaft 51 is hinged on the connecting plate 52; the upper parts of the connecting plates 52 of the two jaw flaps 53 overlap and are coaxially hinged on the main shaft 51, and the main shaft 51 is hinged to the lower bearing beam 6;

[0032] The outer side of the jaw flap 53 is inclined upward and fixedly connected with a support frame 54, and the end of the support rod 4 is hinged on the support frame 54.

[0033] See Appendix Figure 6 As shown, in order to be able to hold more goods, the middle parts of the jaw flaps 53 are inclined outward, and the bottom width of the jaw flaps 53 is greater than the distance between the connecting plates 52; at the same time, the distance between the support frames 54 is the same as the distance between the connecting plates 52.

[0034] To ensure that the grab bucket has sufficient stiffness, strength and durability under a limited dead weight, all the structural parts of this grab bucket are made of Swedish imported high-strength HARDOX500 wear-resistant plates.

[0035] The strut 4 has a variable cross-section box structure, with good bending and compressive resistance. The upper and lower ends of the strut 4 are respectively connected to the upper bearing beam 1 and the corresponding pivot pins of the bucket body 5.

[0036] The bucket body is a plate-shell structure. The main structural component, the main rib plate, of the traditional grab bucket is omitted in the grab bucket body. The design without main ribs makes the bucket body resemble two huge dustpans, with a larger material storage space and a smoother working surface, greatly reducing the resistance when the grab bucket takes materials and improving the grabbing efficiency. Especially for materials with a certain viscosity, it reduces or even avoids the accumulation of materials to a certain extent, with a better grabbing effect and higher efficiency. The design without main ribs significantly reduces the weight of the bucket body.

[0037] The vertical plates and the bottom plate on both sides of the opening and closing end of the grab bucket adopt the process of curved plate transition instead of welded connection, completely eliminating the defect of easy welding at this place. The bucket body structure is strengthened to improve stiffness and strength, ensuring no deformation under normal operation.

[0038] The jaw flap is mainly welded by a bucket bottom plate, bucket side plates, vertical cutting edge plates, horizontal cutting edge plates, etc., and is respectively connected to the lower strut beam and the strut through pivot pins. A seamless steel pipe that penetrates is welded on the reinforcing plate connected to the side plate of the bucket body, making the bucket body a steel frame structure and enhancing the stiffness of the bucket body.

[0039] Both ends of the lower bearing beam are connected to the central hole of the bucket body through hinge shafts.

[0040] To ensure use, all the bars used in this grab bucket are made of 40CrMo material, and are heat-treated by quenching and tempering + intermediate frequency quenching to ensure that the hardness is not lower than HRC50, and corresponding oil grooves and oil filling holes are opened as required. The oil nozzle is a PT1 / 4 hook type, recessed in the pivot pin, and the oil hole diameter is φ8mm to ensure sufficient lubrication.

[0041] All the bushings used in this grab bucket are made of Mc901 high molecular oil-containing nylon bushings, and the steel bushings used at the hinge points of the middle beam, etc., are made of ZGMn13-1 material.

[0042] The pulleys used in this grab bucket are hot-rolled pulleys, without welds, and are integrally pressed and formed. The material is 16 manganese plate, meeting the requirements of JT5028-90. The bottom radius of the pulley rope groove and the hardness of the rope groove are specially calculated to be durable, with sufficient strength, plasticity, wear resistance and anti-gluing properties.

[0043] The upper pulley group adopts a passport-type anti-wire rope out-of-groove device, and the lower pulley group adopts a wire rope guide.

[0044] The above are only exemplary embodiments of the present disclosure, and the scope of the present disclosure cannot be limited thereby. That is, any equivalent changes and modifications made in accordance with the teachings of the present disclosure still fall within the scope covered by the present disclosure. Other embodiments of the present disclosure will be readily apparent to those skilled in the art after considering the specification and the practice of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not recorded in the present disclosure. The specification and the embodiments are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A four-rope double-lobe light multi-purpose grab device, characterized in that, It includes an upper bearing beam (1), a lower bearing beam (6), a strut (4), a bucket body (5), an upper pulley block (2) and a lower pulley block (3). The upper bearing beam (1) and the lower bearing beam (6) are arranged at an upper and lower interval. The middle part of the lower end of the upper bearing beam (1) is equipped with the upper pulley block (2), and the middle part of the upper end of the lower bearing beam (6) is equipped with the lower pulley block (3). The upper pulley block (2) and the lower pulley block (3) are arranged correspondingly and are wound with a traction rope. One end of the upper part of the bucket body (5) is hinged to the middle part of the lower end of the lower bearing beam (6) through a main shaft (51). The other end of the upper part of the bucket body (5) is hinged to a strut (4). The other end of the strut (4) is hinged to the end of the upper bearing beam (1). The bucket body (5) rotates around the main shaft (51) under the traction of the traction rope, and the middle lower part of the bucket body (5) swings relatively to open or close. The bucket body (5) is of a plate-shell structure.

2. The four-rope double-lobe light multi-purpose grab device according to claim 1, characterized in that The upper bearing beam (1) and the lower bearing beam (6) both extend horizontally and are parallel to each other. The upper pulley block (2) is composed of two symmetrically arranged pulleys; the lower pulley block (3) is composed of four symmetrically arranged pulleys; a traction rope is wound between the upper pulley block (2) and the lower pulley block (3), and the traction rope is controlled by a motor to control the closing and opening of the bucket body (5).

3. The four-rope double-lobe light multi-purpose grab device according to claim 1, characterized in that, The bucket body (5) includes two jaw flaps (53) that can swing relatively to open and close. The bottom of the jaw flap (53) is of an inclined plane structure. The inner side of the jaw flap (53) is an opening and closing end (55). The opening and closing ends (55) of the two jaw flaps (53) can be hermetically fitted; a connecting plate (52) is fixedly connected to the upper end of the opening and closing end (55) of the jaw flap (53), and the main shaft (51) is hinged to the connecting plate (52); the upper parts of the connecting plates (52) of the two jaw flaps (53) overlap and are coaxially hinged to the main shaft (51), and the main shaft (51) is hinged to the lower bearing beam (6); the outer side of the jaw flap (53) is inclined upward and is fixedly connected to a support frame (54), and the end of the strut (4) is hinged to the support frame (54).

4. The four-rope double-lobe light multi-purpose grab device according to claim 3, characterized in that, The middle parts of the jaw flaps (53) are inclined outward, and the width of the bottom of the jaw flap (53) is greater than the distance between the connecting plates (52); the distance between the support frames (54) is the same as the distance between the connecting plates (52).

5. The four-rope double-lobe light multi-purpose grab device according to claim 1, wherein, The strut (4) is of a variable cross-section box structure, and the upper and lower ends of the strut (4) are respectively connected to the corresponding pins of the upper bearing beam (1) and the bucket body (5).

6. The four-rope double-lobe light multi-purpose grab device according to claim 2, characterized in that, All the pulleys are hot-rolled pulleys, integrally pressed and formed, and the material is 16 manganese plate.

7. The four-rope double-lobe light multi-purpose grab device according to claim 1, characterized in that, The upper pulley block (2) adopts a passport-type anti-wire rope out-of-groove device, and the lower pulley block (3) adopts a wire rope guide.

Images