Multi-petal grab bucket

Abstract

The utility model discloses a multi-petal grab bucket, and relates to the technical field of grab buckets, the multi-petal grab bucket comprises a grab bucket body, the grab bucket body is rotatably provided with a plurality of bucket petals, the grab bucket body is provided with a plurality of fixing seats, the fixing seats are rotatably provided with driving parts, and the output ends of the driving parts are rotatably connected with one ends of the bucket petals to drive the bucket petals to rotate; the grab bucket body comprises a hollow column, an oil tank is arranged in the hollow column, a plurality of communicating grooves are formed in the side wall of the hollow column in the circumferential direction in a penetrating mode, heat dissipation plates matched with the communicating grooves in a one-to-one correspondence mode are arranged on the outer side wall of the hollow column, and the heat dissipation plates communicate with the interior of the hollow column and are provided with a plurality of heat dissipation grooves. The oil tank is arranged in the hollow column, the oil tank can be protected conveniently, the communicating groove in the side wall of the hollow column is matched with the heat dissipation plate and the heat dissipation groove on the outer side, the interior of the hollow column can be communicated with outside air, heat in the hollow column can be dissipated easily, and therefore the temperature of the oil tank is reduced; and the problems that the viscosity of hydraulic oil in the oil tank is reduced and the transmission efficiency of a hydraulic system is reduced due to high temperature are solved.

Description

Technical Field

[0001] This application relates to the field of grab bucket technology, and in particular to a multi-lobed grab bucket. Background Technology

[0002] In today's industrial sector, multi-lobed grab buckets are widely used in various scenarios such as garbage collection and river dredging due to their excellent material handling capabilities. Whether processing irregularly shaped block materials or dealing with loose granular bulk materials, multi-lobed grab buckets can efficiently complete grabbing and handling tasks through the flexible opening and closing of multiple lobes.

[0003] Multi-lobed grabs typically have four or more lobes, symmetrically distributed around the center of the grab. During operation, the hydraulic system serves as the core power source, with hydraulic oil circulating in a closed oil circuit, driving the piston of the hydraulic cylinder to extend and retract, thereby moving each section of the structure and the lobes.

[0004] Regarding the aforementioned technologies, the inventors believe that the oil tanks of existing multi-lobed grabs are mostly installed in the lower space of the grab or in a relatively enclosed area inside the frame. When operating at high temperatures for a long time, they will generate a large amount of heat, which will easily reduce the viscosity of the hydraulic oil and reduce the transmission efficiency of the hydraulic system. Utility Model Content

[0005] The purpose of this application is to provide a multi-lobed grab bucket to improve the problem that the oil tank of the multi-lobed grab bucket generates a lot of heat energy during long-term operation at high temperatures, which easily reduces the viscosity of the hydraulic oil and reduces the transmission efficiency of the hydraulic system.

[0006] This application provides a technical solution for a multi-lobed grab bucket, employing the following:

[0007] A multi-lobed grab bucket includes a grab bucket body, which is rotatably provided with a plurality of grab lobes. The grab bucket body is provided with a plurality of fixed seats, and each fixed seat is rotatably provided with a driving component. The output end of the driving component is rotatably connected to one end of a grab lob to drive the grab lob to rotate. The grab bucket body includes a hollow column, and an oil tank is provided inside the hollow column. A plurality of connecting slots are circumferentially provided through the side wall of the hollow column. A heat dissipation plate is provided on the outer side wall of the hollow column, which corresponds to and cooperates with the connecting slots. The heat dissipation plate is provided with a plurality of heat dissipation grooves communicating with the interior of the hollow column.

[0008] By adopting the above technical solution, the hollow column design of the grab body houses the oil tank, which facilitates the protection of the oil tank. The connecting groove on the side wall of the hollow column cooperates with the heat dissipation plate and heat dissipation groove on the outside, allowing the interior of the hollow column to circulate with the outside air. This helps to dissipate the heat inside the hollow column, thereby reducing the temperature of the oil tank. This helps to reduce the problem of reduced hydraulic oil viscosity and decreased hydraulic system transmission efficiency caused by high temperature.

[0009] Optionally, an axial flow cooling fan is provided on the top surface of the hollow column, and the air outlet of the axial flow cooling fan is connected to the interior of the hollow column.

[0010] By adopting the above technical solution, the air outlet of the axial flow cooling fan is connected to the inside of the hollow column, which helps to accelerate the air flow inside the hollow column, expel hot air in time, further improve the heat dissipation efficiency, and help maintain the hydraulic oil at a suitable temperature, so as to ensure the stable operation of the hydraulic system.

[0011] Optionally, the fixing seat is circumferentially disposed on the outer wall of the hollow column, and the heat dissipation plate is located between two adjacent fixing seats.

[0012] By adopting the above technical solution, this layout makes the grab bucket structure compact, ensuring stable installation of the drive components while making full use of the space for heat dissipation, reducing structural interference, and contributing to the stable operation of the grab bucket body; at the same time, it ensures the uniformity of the cooling effect and reduces the possibility of excessively high local stability inside the hollow column.

[0013] Optionally, the heat sink is provided with a plurality of fixing screws that are threadedly connected to the hollow column.

[0014] By adopting the above technical solution, the heat sink is connected to the hollow column by fixing screws. This connection method is not only stable and can ensure that the heat sink and the hollow column fit tightly, but also easy to disassemble and install, making it convenient for the heat sink to be maintained and replaced later.

[0015] Optionally, the heat dissipation grooves are arranged at intervals along the vertical direction on the heat dissipation plate.

[0016] By adopting the above technical solution, it is helpful to guide the hot air inside the hollow column to be discharged in an orderly manner through the heat dissipation slots, thereby enhancing the heat dissipation effect.

[0017] Optionally, the heat sink is provided with a semi-shielding eaves corresponding to the heat sink grooves, and the semi-shielding eaves control the hot air inside the hollow column to flow downwards after exiting the heat sink grooves.

[0018] By adopting the above technical solution, the semi-shaded eaves can control the hot air inside the hollow column to flow downwards after exiting through the heat dissipation grooves. This not only helps to reduce the backflow of hot air into the hollow column and ensure the heat dissipation effect, but also reduces the entry of rainwater and other impurities into the hollow column from the heat dissipation grooves, protecting the oil tank and hydraulic system and extending their service life.

[0019] Optionally, a sunshade is provided on the circumference of the top surface of the hollow column.

[0020] By adopting the above technical solution, the sunshade can block direct sunlight, reduce the temperature rise inside the hollow column caused by solar radiation, reduce the impact of the high temperature environment on the oil tank temperature, and indirectly maintain the performance of hydraulic oil.

[0021] Optionally, the sunshade is tilted downwards to reduce rainwater buildup.

[0022] By adopting the above technical solution, the sunshade is tilted downwards, which can effectively reduce the accumulation of rainwater on the hollow column and the sunshade, thereby reducing the possibility of rainwater entering the interior of the hollow column. This helps to prevent rainwater from damaging the oil tank and hydraulic system and extends the service life of the grab bucket.

[0023] In summary, this application includes at least one of the following beneficial technical effects of the multi-lobed grab bucket:

[0024] 1. The hollow column design of the grab bucket body houses the oil tank, which is convenient for protecting the oil tank. The connecting groove on the side wall of the hollow column cooperates with the heat dissipation plate and heat dissipation groove on the outside to allow the interior of the hollow column to circulate with the outside air, which helps to dissipate the heat inside the hollow column, thereby reducing the temperature of the oil tank. This helps to reduce the problem of the hydraulic oil viscosity decreasing and the hydraulic system transmission efficiency decreasing due to high temperature.

[0025] 2. The air outlet of the axial cooling fan is connected to the inside of the hollow column, which helps to accelerate the airflow inside the hollow column, expel hot air in time, further improve the heat dissipation efficiency, and help maintain the hydraulic oil at a suitable temperature, so as to ensure the stable operation of the hydraulic system.

[0026] 3. The semi-shading eaves can control the hot air inside the hollow column to flow downwards after exiting through the heat dissipation grooves. This helps to reduce the backflow of hot air into the hollow column, ensuring the heat dissipation effect, and also reduces the entry of rainwater and other impurities into the hollow column through the heat dissipation grooves, protecting the oil tank and hydraulic system and extending their service life. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the multi-lobed grasper;

[0028] Figure 2 This is a cross-sectional schematic diagram used to illustrate the hollow column structure in the embodiment.

[0029] In the diagram, 1. Grab bucket body; 11. Bucket flap; 12. Fixing base; 13. Driving component; 2. Hollow column; 21. Oil tank; 22. Connecting groove; 3. Heat dissipation plate; 31. Heat dissipation groove; 32. Fixing screw; 33. Semi-shading eaves; 4. Axial flow cooling fan; 5. Sunshade. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0031] A multi-lobed grab, as shown in the reference Figure 1The system includes a grab bucket body 1, which has several bucket petals 11 that are rotatably mounted on it. Specifically, the bucket petals 11 are rotatably connected to the grab bucket body 1 via pins. The grab bucket body 1 is provided with several fixed seats 12, the number of which is the same as the number of bucket petals 11. The fixed seats 12 are fixed to the grab bucket body 1 by welding, and their function is to provide a mounting base for the drive component 13.

[0032] Reference Figure 1 The fixed base 12 is rotatably equipped with a driving component 13, which can be a hydraulic cylinder. The cylinder barrel of the hydraulic cylinder is rotatably connected to the fixed base 12 through a pin shaft to realize the flexible rotation of the hydraulic cylinder. The output end of the driving component 13 is rotatably connected to one end of the bucket petal 11 to drive the bucket petal 11 to rotate. Specifically, the piston rod of the hydraulic cylinder is connected to the bucket petal 11 through a hinge shaft, so that the piston rod can drive the bucket petal 11 to open and close when it extends or retracts.

[0033] Reference Figure 1 , Figure 2 The grab body 1 includes a hollow column 2, which is made of high-strength metal material and has an oil tank 21 inside for storing hydraulic oil required by the hydraulic system. An axial flow cooling fan 4 is installed on the top surface of the hollow column 2 and is fixed to the top surface of the hollow column 2 by bolts. The air outlet of the axial flow cooling fan 4 is connected to the inside of the hollow column 2. When the axial flow cooling fan 4 is working, it can ventilate into the hollow column 2, allowing the hot air inside the hollow column 2 to be discharged and accelerating heat dissipation.

[0034] Reference Figure 2 The hollow column 2 has several through slots 22 circumferentially arranged on its side wall. Each through slot 22 is a rectangular through hole used to connect the interior and exterior spaces of the hollow column 2. A heat sink 3 is provided on the outer side wall of the hollow column 2, corresponding to each through slot 22. The heat sink 3 is made of aluminum plate with good thermal conductivity and is fixed to the outer side wall of the hollow column 2 by several screws 32 threaded to the hollow column 2. In this embodiment, four screws 32 are preferably used. The screws 32 pass through the mounting holes on the heat sink 3 and are screwed into the threaded holes on the side wall of the hollow column 2, thus achieving a stable installation of the heat sink 3.

[0035] Reference Figure 1 , Figure 2 A sunshade 5 is provided on the top circumference of the hollow column 2. The sunshade 5 is made of steel plate and is fixedly connected to the top surface of the hollow column 2 by welding. The sunshade 5 is tilted downward at a certain angle, such as 15°-30°, which can effectively reduce the accumulation of rainwater on the sunshade 5 and help prevent rainwater from entering the interior of the hollow column 2 and causing rainwater accumulation to corrode the interior of the hollow column 2.

[0036] Reference Figure 1 , Figure 2The fixing base 12 is circumferentially arranged on the outer wall of the hollow column 2. The heat dissipation plate 3 is located between two adjacent fixing bases 12. The heat dissipation plate 3 is connected to the interior of the hollow column 2 and has several heat dissipation grooves 31. The heat dissipation grooves 31 are rectangular grooves, and several are arranged sequentially at intervals along the vertical direction on the heat dissipation plate 3.

[0037] Reference Figure 1 , Figure 2 The heat sink 3 is provided with a semi-shielding eaves 33 corresponding to the heat sink 31. The semi-shielding eaves 33 are made of aluminum plate of the same material as the heat sink 3 and are fixed to the heat sink 3 by welding. The semi-shielding eaves 33 control the hot air inside the hollow column 2 to flow out of the heat sink 31 and downward, while also preventing rainwater from entering the hollow column 2 from the heat sink 31.

[0038] The implementation principle of this application embodiment is as follows:

[0039] In actual use, when grabbing materials, the hydraulically driven hydraulic cylinder drives the bucket segments 11 to open and close to complete the grabbing. In terms of heat dissipation, the axial flow cooling fan 4 blows air into the hollow column 2, and the heat dissipation plate 3 and heat dissipation groove 31 on the side wall of the hollow column 2 discharge the hot air inside the hollow column 2. The semi-shaded eaves 33 reduce the backflow of hot air and the entry of rainwater, and the sunshade 5 reduces direct sunlight and rainwater accumulation. This helps the oil tank 21 maintain a suitable temperature.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-lobed grab bucket, comprising a grab bucket body (1), wherein the grab bucket body (1) is rotatably provided with a plurality of grab bucket lobes (11), the grab bucket body (1) is provided with a plurality of fixed seats (12), and each fixed seat (12) is rotatably provided with a driving member (13), the output end of the driving member (13) being rotatably connected to one end of a grab bucket (11) to drive the grab bucket (11) to rotate; characterized in that: The grab body (1) includes a hollow column (2), an oil tank (21) is provided inside the hollow column (2), a plurality of connecting grooves (22) are provided circumferentially through the side wall of the hollow column (2), a heat dissipation plate (3) is provided on the outer side wall of the hollow column (2) and it corresponds to the connecting grooves (22) one by one, and the heat dissipation plate (3) is provided with a plurality of heat dissipation grooves (31) connecting the inside of the hollow column (2).

2. A multi-lobed grab bucket according to claim 1, characterized in that: An axial flow cooling fan (4) is provided on the top surface of the hollow column (2), and the air outlet of the axial flow cooling fan (4) is connected to the interior of the hollow column (2).

3. A multi-lobed grab bucket according to claim 1, characterized in that: The fixing seat (12) is circumferentially arranged on the outer wall of the hollow column (2), and the heat dissipation plate (3) is located between two adjacent fixing seats (12).

4. A multi-lobed grab bucket according to claim 3, characterized in that: The heat sink (3) is provided with a number of fixing screws (32) that are threadedly connected to the hollow column (2).

5. A multi-lobed grab bucket according to claim 4, characterized in that: The heat dissipation grooves (31) are arranged in a series of intervals along the vertical direction on the heat dissipation plate (3).

6. A multi-lobed grab bucket according to claim 5, characterized in that: The heat dissipation plate (3) is provided with a semi-shielding eave (33) corresponding to the heat dissipation groove (31). The semi-shielding eave (33) controls the hot air inside the hollow column (2) to flow out of the heat dissipation groove (31) and then downward.

7. A multi-lobed grab bucket according to claim 1, characterized in that: The hollow column (2) has a sunshade (5) extending outward from the top circumference.

8. A multi-lobed grab bucket according to claim 7, characterized in that: The sunshade (5) is tilted downwards to reduce rainwater accumulation.

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