Bulk cargo grab bucket

Abstract

The invention relates to the field of grab buckets, in particular to a bulk cargo grab bucket, and aims to solve the problem that the surface grabbing efficiency of a traditional grab bucket is low. The bucket structurally comprises two bucket shells arranged oppositely, a first supporting rod set, a second supporting rod set, a driving assembly, a fixing sleeve and the like, wherein the first supporting rod set and the second supporting rod set are hinged. The driving motor moves in the axial direction of the sleeve during operation and opens the grab bucket through centrifugal force, meanwhile, the abutting rod transmits force to the bottom of the material bin through the abutting base, the second supporting rod set is promoted to change from an acute angle to an obtuse angle, the opening of the grab bucket is enlarged, and the filling rate and the grabbing effect are improved. And the X-shaped reinforced inhaul cable ensures the closing tightness, material leakage is avoided, and the operation precision is improved. According to the invention, an efficient, economical and environment-friendly operation mode is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of grab buckets, and more particularly, to a bulk cargo grab bucket. Background Art

[0002] As a core device in port loading and unloading operations, the grabbing performance of a bulk cargo grab bucket directly determines the loading and unloading efficiency and the level of operating costs. In traditional designs, the grab bucket often only touches and grabs the materials on the surface of the goods during the closing process, and it is difficult to reach the bottom of the cargo hold for effective probing, resulting in generally low filling rates. This limitation causes the phenomenon of "surface grabbing" to frequently occur in the operation of existing grab buckets in deep bins, that is, it can only obtain materials from the surface of the goods and cannot fully excavate the bottom materials, so it is necessary to make multiple round trips to grab to complete the emptying of the entire cargo hold.

[0003] This situation not only increases the time cost of single loading and unloading, but also increases the wear degree and energy consumption of mechanical equipment, thereby increasing the overall operating cost. Especially when dealing with large-scale bulk cargo transportation, the inefficient grabbing operation may become one of the key bottlenecks restricting the port throughput capacity. Summary of the Invention

[0004] The purpose of the present invention is to provide a bulk cargo grab bucket to solve the technical problem of surface grabbing that usually exists in the current use of bulk cargo grab buckets.

[0005] The present invention provides a bulk cargo grab bucket, including: two oppositely arranged bucket shells; a first strut group and a second strut group that are hinged, the lower end of the first strut group is connected to the bucket shell, and the upper end forms a first hinge point with the lower end of the second strut group; a driving component, including a driving motor and a motor shaft connected to each other, the outer wall of the motor shaft is provided with a thread, the end of the motor shaft is hinged to the second strut group, and the top of the driving motor is connected to the upper support plate of the vehicle body through a telescopic rod; a fixed sleeve, which is fixedly connected to the side support plate of the vehicle body through a sleeve connecting rod; wherein, the upper ends of the two second strut groups and the bottom of the motor shaft are hinged through a first hinge shaft.

[0006] According to an embodiment of the present invention, the surface of the thread is coated with a molybdenum disulfide coating.

[0007] According to an embodiment of the present invention, the first hinge point is provided with an X-shaped strengthening cable, which includes steel strands arranged in a cross pattern, and the steel strands are connected to a wire winding mechanism, and the wire winding mechanism is fixed on the vehicle body.

[0008] According to an embodiment of the present invention, it further includes an abutting component, and the abutting component specifically includes two abutting rods and an abutting base, the two abutting rods and the abutting base are hinged through a second hinge shaft, and the ends of the two abutting rods are detachably connected to the second strut group.

[0009] According to an embodiment of the present invention, a guiding chute is provided on the inner wall of the left bucket shell, and a matching flange is provided on the outer wall of the right bucket shell, forming an overlapping sealing surface when closed.

[0010] According to an embodiment of the present invention, each of the first strut group and the second strut group includes two parallel alloy steel struts.

[0011] According to an embodiment of the present invention, a serrated wear-resistant alloy layer is provided on the grab edge.

[0012] According to an embodiment of the present invention, the vehicle body is provided with a counterweight adjustment compartment, which includes a plurality of movable counterweight blocks and guide rails, and the position of the counterweight blocks is controlled by electric push rods.

[0013] According to an embodiment of the present invention, longitudinal reinforcing ribs and annular reinforcing ribs are provided on the outer surface of the bucket shell, forming a cross-shaped reinforcing structure.

[0014] According to an embodiment of the present invention, an array of wear-resistant ceramic chips is provided on the outer surface of the bucket shell, arranged in a diamond-shaped staggered pattern.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0016] During the operation of the driving motor of the present invention, it moves downward along the axial direction of the sleeve, and uses the generated centrifugal force to expand the grab bucket. This design can not only improve the filling rate inside the grab bucket during rotation, but also significantly enhance the grabbing effect. Specifically, the abutting rod is fixedly connected to the abutting base in a hinged manner. When the driving motor starts and drives the rotating shaft to rotate, the rotating shaft moves downward along the sleeve, and at this time, the upper telescopic rod starts to extend. At the same time, the lower abutting rod closely adheres to the bottom surface of the material bin where the material to be grabbed is located, and transmits the force to the abutting rod through the abutting base; the angle of the abutting rod is set on the second strut group, and under the action of the force, the second strut group can be converted from the initial acute angle state to an obtuse angle state, thereby effectively increasing the relative distance between the two grab buckets. The opening size of the grab bucket is increased, and the grabbing ability is further enhanced, ensuring the efficient grabbing and handling of materials. The use of X-shaped strengthening cables ensures the tightness and stability of the grab bucket when it is closed, effectively avoiding material leakage, while improving the operation accuracy and efficiency during the grabbing process. The design of coating the screw surface with a molybdenum disulfide coating and a serrated wear-resistant alloy layer not only reduces the friction coefficient, extends the service life of key components, but also reduces the energy consumption of the overall equipment, realizing a more economical and environmentally friendly operation mode. The design of the counterweight adjustment compartment allows the center of gravity position of the grab bucket to be adjusted according to actual operation requirements, increasing the adaptability of the grab bucket to different types of goods and different environmental conditions, and further improving the loading and unloading efficiency and safety. The first strut group and the second strut group are made of high-strength alloy steel, and the grab bucket is provided with a well-shaped strengthening structure and an array of wear-resistant ceramic chips, greatly enhancing the mechanical strength and wear resistance of the grab bucket, and ensuring stable working performance under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 FIG. is a schematic structural diagram of a bulk cargo grab bucket provided in Embodiment 1 of the present invention at the first working position.

[0019] Figure 2 FIG. is a schematic structural diagram of a bulk cargo grab bucket provided in Embodiment 1 of the present invention at the second working position.

[0020] Figure 3 FIG. is a schematic structural diagram of a bulk cargo grab bucket provided in Embodiment 1 of the present invention at the third working position.

[0021] Figure 4Schematic diagram of the bucket shell of a bulk material grab provided in Embodiment 2 of the present invention at the second working position.

[0022] Figure 5 Schematic diagram of the bucket shell of a bulk material grab provided in Embodiment 2 of the present invention at the third working position.

[0023] Reference numerals:

[0024] 111. Bucket shell; 1111. Guide chute; 1121. Flange;

[0025] 121. First strut group; 122. Second strut group; 123. First hinge point; 1231. Cable;

[0026] 131. Driving motor; 132. Motor shaft; 133. Telescopic rod; 134. Second hinge point;

[0027] 141. Fixed sleeve; 142. Sleeve connecting rod;

[0028] 151. Contact rod; 152. Contact base;

[0029] 160. Counterweight adjustment cabin; 161. Movable counterweight; 162. Electric push rod. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Embodiment 1

[0032] Embodiment 1 of the present invention provides a bulk material grab to increase the grasping rate.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 3 , the bulk material grab provided in the embodiment of the present invention includes: two relatively arranged bucket shells 111 for directly contacting and grasping materials;

[0034] The first strut group 121 and the second strut group 122 are hinged. The lower end of the first strut group 121 is connected to the bucket shell 111, and the upper end forms a first hinge point 123 with the lower end of the second strut group 122;

[0035] The driving assembly includes a driving motor 131 and a motor shaft 132 connected to each other. The outer wall of the motor shaft 132 is provided with threads. The end of the motor shaft 132 is hinged to the second strut group 122. The top of the driving motor 131 is connected to the upper support plate of the vehicle body through a telescopic rod 133.

[0036] The fixed sleeve 141 is fixedly connected to the side support plate of the vehicle body through a sleeve connecting rod 142. The fixed sleeve 141 is provided with threads that match the threads on the outer wall of the motor shaft 132. The motor shaft 132 can reciprocally move along the extending direction of the fixed sleeve 141, that is, in the vertical direction.

[0037] Among them, the upper ends of the two second strut groups 122 and the bottom of the motor shaft 132 are hinged through a first hinge shaft, and this place is the second hinge point 134.

[0038] In this embodiment, the thread surface is coated with a molybdenum disulfide coating to reduce friction, improve efficiency, and extend the service life.

[0039] In this embodiment, an X-shaped strengthening cable 1231 is provided at the first hinge point 123, which includes steel strands arranged in a cross pattern. The steel strands are connected to a wire winding mechanism, and the wire winding mechanism is fixed on the vehicle body.

[0040] In this embodiment, a butt joint assembly is further included. The butt joint assembly specifically includes two butt joint rods 151 and a butt joint base 152. The two butt joint rods 151 and the butt joint base 152 are hinged through a second hinge shaft, and the ends of the two butt joint rods 151 are detachably connected to the second strut group 122. When the butt joint rods 151 contact the bottom of the material bin, the force is transmitted to the butt joint rods 151 through the butt joint base 152, pushing the second strut group 122 to expand, thereby increasing the distance between the two bucket shells 111, which helps to deeply excavate the bottom materials and improve the filling rate.

[0041] In this embodiment, the butt joint base 152 includes an upper base and a lower base. The upper base and the lower base can rotate relative to each other. Specifically, the upper base is provided with a convex portion, and the lower base is provided with a groove. The convex portion is inserted into the groove, and an appropriate gap is maintained between the convex portion and the groove to avoid poor rotation caused by being too tight or shaking and instability caused by being too loose. The upper base is hinged to the butt joint rod 151 through a second hinge shaft.

[0042] In this embodiment, each of the first strut group 121 and the second strut group 122 includes two parallel alloy steel struts.

[0043] In this embodiment, the grab blade edge is provided with a serrated wear-resistant alloy layer, which significantly improves the durability of the blade edge and reduces the maintenance frequency and cost.

[0044] In this embodiment, the vehicle body is provided with a counterweight adjustment compartment 160, which includes a plurality of movable counterweights 161 and guide rails. The position of the counterweights is controlled by electric push rods 162, allowing the center of gravity of the grab to be adjusted according to actual operation requirements, optimizing the operation stability and adapting to different types of goods and working environments.

[0045] In this embodiment, the outer surface of the bucket shell 111 is provided with longitudinal reinforcing ribs and annular reinforcing ribs, forming a cross-shaped reinforcing structure to enhance the anti-wear performance.

[0046] In this embodiment, the outer surface of the bucket shell 111 is provided with an array of wear-resistant ceramic chips, arranged in a diamond-shaped and staggered pattern, enhancing the mechanical strength and anti-wear ability of the bucket shell 111, ensuring that it can still maintain a good working state under complex working conditions.

[0047] In this embodiment, one of the bucket shells 111 can be partially sleeved outside the other bucket shell 111, so that the two bucket shells 111 enclose a closed accommodation cavity.

[0048] The following is a detailed description of the use process of the bulk cargo grab of the present invention:

[0049] First, confirm that all mechanical components are in a normal state, especially check whether key parts such as the drive motor 131, telescopic rod 133, and abutting component are intact; please refer to Figure 1 , start the drive motor 131, the motor shaft 132 rotates and drives the entire drive assembly to move downward through the thread. The high-speed rotation causes the first strut group 121 and the second strut group 122 to start to expand (the first working position), and the distance between the two bucket shells 111 increases. Please refer to Figure 2 , at this time, the abutting rod 151 touches the bottom of the material bin, and the force is transmitted to the abutting rod 151 through the abutting base 152, further pushing the second strut group 122 to expand, further increasing the distance between the two bucket shells 111 (the second working position). As the bucket shell 111 rotates and penetrates, the material is gradually filled into the interior of the bucket shell 111. Please refer to Figure 3 , pull the strengthening cable 1231 to close the two bucket shells 111, and use the serrated wear-resistant alloy layer to ensure that the material will not easily slip. After the bucket shell 111 is completely closed (the third working position), drive the drive motor 131 to reverse to lift the bucket shell 111 to complete the bulk cargo grabbing.

[0050] Embodiment 2

[0051] Embodiment 2 of the present invention provides a bulk cargo grab to increase the grabbing rate.

[0052] Please refer to Figure 4 and Figure 5 , the bulk cargo grab provided by the embodiment of the present invention is only different from that of Embodiment 1 in that

[0053] In this embodiment, a guiding chute 1111 is provided on the inner wall of the left hopper shell 111, and a matching flange 1121 is provided on the outer wall of the right hopper shell 111. When closed, an overlapping sealing surface is formed to prevent material leakage. The width of the guiding chute 1111 is smaller than the width of the material to prevent the material from falling into the inside of the guiding chute 1111.

[0054] The embodiments of the present invention have at least the following advantages:

[0055] During the operation of the driving motor of the present invention, it moves downward along the axial direction of the sleeve, and uses the generated centrifugal force to expand the grab. This design can not only improve the filling rate inside the grab during rotation, but also significantly enhance the grabbing effect. Specifically, the abutting rod is fixed to the abutting base by a hinged manner. When the driving motor starts and drives the rotating shaft to rotate, the rotating shaft will move downward along the sleeve, and at this time, the upper telescopic rod starts to extend. At the same time, the lower abutting rod closely adheres to the bottom surface of the material bin where the material to be grabbed is located, and transmits the force to the abutting rod through the abutting base; the angle of the abutting rod is set on the second strut group, and under the action of the force, the second strut group can be converted from the initial acute angle state to an obtuse angle state, effectively increasing the relative distance between the two grabs. The opening size of the grab is increased, and the grabbing ability is further enhanced, ensuring the efficient grabbing and handling of materials. The adoption of the X-shaped strengthening cable ensures the tightness and stability of the grab when closed, effectively avoiding material leakage, while improving the operation accuracy and efficiency during the grabbing process. The design of coating the screw surface with a molybdenum disulfide coating and a serrated wear-resistant alloy layer not only reduces the friction coefficient, extends the service life of key components, but also reduces the energy consumption of the overall equipment, realizing a more economical and environmentally friendly operation mode. The design of the counterweight adjustment cabin allows adjusting the center of gravity position of the grab according to the actual operation requirements, increasing the adaptability of the grab to different types of goods and different environmental conditions, and further improving the loading and unloading efficiency and safety. The first strut group and the second strut group are made of high-strength alloy steel, and the grab is provided with a cross-shaped strengthening structure and an array of wear-resistant ceramic chips, greatly enhancing the mechanical strength and wear resistance of the grab, ensuring stable working performance under complex working conditions.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bulk material grab, characterized in that, Comprising: Two relatively arranged bucket shells; The first and second strut groups which are hinged, the lower end of the first strut group is connected to the bucket shell, and the upper end forms a first hinge point with the lower end of the second strut group; A drive assembly, including a drive motor and a motor shaft connected to each other, the outer wall of the motor shaft is provided with threads, the end of the motor shaft is hinged to the second strut group, and the top of the drive motor is connected to the upper support plate of the vehicle body through a telescopic rod; A fixed sleeve, fixedly connected to the side support plate of the vehicle body through a sleeve connecting rod; Wherein, the upper ends of the two second strut groups and the bottom of the motor shaft are hinged through a first hinge shaft.

2. The bulk grab according to claim 1, wherein The thread surface is coated with a molybdenum disulfide coating.

3. The bulk material grab according to claim 1, characterized in that, An X-shaped strengthening cable is provided at the first hinge point, including steel stranded wires arranged in a cross, and the steel stranded wires are connected to a wire take-up mechanism, and the wire take-up mechanism is fixed on the vehicle body.

4. The bulk material grab according to claim 1, wherein, It also includes an abutting component, and the abutting component specifically includes two abutting rods and an abutting base, the two abutting rods and the abutting base are hinged through a second hinge shaft, and the ends of the two abutting rods are detachably connected to the second strut group.

5. The bulk grab according to claim 1, characterized in that, A guiding chute is provided on the inner wall of the left bucket shell, and a matching flange is provided on the outer wall of the right bucket shell, forming an overlapping sealing surface when closed.

6. The bulk grab according to claim 1, characterized in that, Each of the first strut group and the second strut group includes two parallel alloy steel struts.

7. The bulk grab according to claim 1, characterized in that, The grab blade is provided with a serrated wear-resistant alloy layer.

8. The bulk grab according to claim 1, characterized in that, The vehicle body is provided with a counterweight adjustment compartment, including a plurality of movable counterweights and guide rails, and the position of the counterweights is controlled by an electric push rod.

9. The bulk grab according to claim 1, characterized in that, Longitudinal reinforcing ribs and circumferential reinforcing ribs are provided on the outer surface of the bucket shell, forming a grid-shaped reinforcing structure.

10. The bulk grab according to claim 1, characterized in that, An array of wear-resistant ceramic chips is provided on the outer surface of the bucket shell, arranged in a diamond-shaped staggered pattern.

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