CN219136148U

CN219136148U - Electric hydraulic grab bucket for loading

Info

Publication number: CN219136148U
Application number: CN202223501300.7U
Authority: CN
Inventors: 魏云林
Original assignee: Enbeili Kunshan Machinery Co ltd
Current assignee: Enbeili Kunshan Machinery Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-06
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to an electric hydraulic grab bucket for loading, which comprises a lifting ring, a chain, a frame, a hydraulic cylinder, a motor, a variable plunger pump, claw flaps and a control valve block, wherein the lifting ring is connected with the frame through the chain, the frame is of a rectangular structure, one end of the hydraulic cylinder is connected with the upper part of the long side of the frame of the rectangular structure through a pin shaft, the other end of the hydraulic cylinder is connected with the claw flaps through the pin shaft, the claw flaps are connected with the lower part of the frame through the pin shaft, the claw flaps are in central symmetry with the frame as the center, the two short sides of the frame are connected with gates through the hydraulic cylinder, and the motor, the variable plunger pump and the control valve block are connected in the frame to form a hydraulic control unit of the electric hydraulic grab bucket. The utility model can realize the shipment of the freight car without leakage and improve the working efficiency of shipment.

Description

Electric hydraulic grab bucket for loading

Technical Field

The utility model relates to an electro-hydraulic grab bucket for loading.

Background

On the scrap steel stacking head, the scrap steel on the ship needs to be unloaded to a truck for transferring. Electromagnetic chucks are currently used to transport scrap steel. The electromagnetic chuck can only absorb 2-3 tons at a time, and the efficiency is lower than that of a 40T crane on site. If a conventional electro-hydraulic multi-lobed grab is used, 7m may be used ³ And an electro-hydraulic multi-flap grab with a dead weight of 12 tons is used for grabbing 21 tons of goods. But the opening and closing sizes of the electro-hydraulic multi-flap grab bucket are 5900mm and 3420mm respectively, which far exceed the width of 3200mm of the on-site heavy goods vehicle, and the situation of material leakage is easy to cause during loading. And the 55KW motor equipped with the grab bucket has higher power consumption.

The patent is searched: an electric four-valve hydraulic grab bucket (CN 201110089777.6), wherein the lifting ring and the shackle are connected through a pin shaft to form a hanging device of the grab bucket, and the hanging device is a connecting piece of the grab bucket and a crane; a rack is arranged below the hanging device, one end of a hydraulic cylinder is fixed with the upper part of the rack through a pin shaft, the other end of the hydraulic cylinder is fixed with the claw valve through a pin shaft, and the hydraulic cylinder stretches to drive and control the claw valve to act so as to finish grabbing and dropping materials; the claw is connected with the lower part of the frame through a pin shaft. The motor, the variable plunger pump and the control valve block are arranged in the frame to form a hydraulic control unit of the electric four-valve hydraulic grab bucket. The utility model uses the plug-in overflow valve to realize unloading and pressure maintaining of the whole loop, solves the problem of excessive heating of a hydraulic system, and simultaneously uses the plug-in one-way valve to reduce the hydraulic impact of the system, thereby reducing the pulsation influence of liquid. However, the above-mentioned structure is only aimed at the transportation of general goods, but the risk of material leakage also occurs when goods are mounted on trucks, and the above-mentioned structure has high power consumption.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an electro-hydraulic grab bucket for loading.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an electronic hydraulic grab bucket for loading, includes rings, chain, frame, pneumatic cylinder, motor, variable plunger pump, claw lamella and control valve piece, rings pass through the chain and link to each other with the frame, the frame is rectangular structure, the one end of pneumatic cylinder links to each other with the upper portion on the frame long limit of rectangular structure through the round pin axle, and the other end of pneumatic cylinder links to each other with the claw lamella through the round pin axle, and the flexible drive of pneumatic cylinder and control claw lamella action accomplish snatching and putting down the material, the claw lamella is connected with the lower part of frame through the round pin axle, the claw lamella is central symmetry with the frame as the center, both minor faces of frame all are connected with the gate through the pneumatic cylinder, motor, variable plunger pump and control valve piece are connected in the frame, and they constitute the hydraulic control unit of electronic hydraulic grab bucket.

Preferably, the gate is positioned between the claw sections, and equidistant gaps are arranged between the gate and the claw sections on two sides of the gate.

Preferably, the hydraulic control unit is connected with the hydraulic cylinder through a load sensitive system.

Preferably, the hydraulic control unit is connected with the hydraulic cylinder of the control gate through a sequence valve.

By means of the scheme, the utility model has at least the following advantages:

according to the utility model, the grab bucket with the rectangular structure is used for carrying a truck, and meanwhile, the risk of material leakage can be prevented through the delayed gate. Meanwhile, a low-power motor can be adopted through the load sensing system, so that the power consumption is reduced, and the aim of reducing the cost is fulfilled.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a schematic view of the internal structure of the frame;

fig. 5 is a control diagram of the hydraulic control unit.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the terms "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or the positional relationship that the product of the application is conventionally put in use, merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or vertical, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Examples

As shown in fig. 1 to 5, an electric hydraulic grab bucket for loading comprises a lifting ring 1, a chain 2, a frame 3, a hydraulic cylinder 4, a motor 5, a variable plunger pump 6, claw flaps 7 and a control valve block 8, wherein the lifting ring 1 is connected with the frame 3 through the chain 2, the frame 3 is of a rectangular structure, one end of the hydraulic cylinder 4 is connected with the upper part of the long side of the frame 3 of the rectangular structure through a pin shaft, the other end of the hydraulic cylinder 4 is connected with the claw flaps 7 through the pin shaft, the claw flaps 7 are driven by extension and retraction of the hydraulic cylinder and control the claw flaps 7 to act so as to complete grabbing and dropping of materials, the claw flaps 7 are connected with the lower part of the frame 3 through the pin shaft, the claw flaps 7 are symmetrical with the frame 3 as a center, two short sides of the frame 3 are connected with a gate 9 through the hydraulic cylinder 4, and the motor 5, the variable plunger pump 6 and the control valve block 8 are connected in the frame 3 to form a hydraulic control unit 10 of the electric hydraulic grab bucket.

In the utility model, the gate 9 is arranged between the claw lobes 7, and equidistant gaps are arranged between the gate and the claw lobes 7 on two sides.

As shown in fig. 5, the hydraulic control unit 10 of the present utility model further includes a first logic valve DN1, a second logic valve DN2, a relief valve DV3, a first remote pressure regulating valve DV1, a second remote pressure regulating valve DV2, a first check valve RV1, a second check valve RV2, a first pilot-operated check valve SV1, a second pilot-operated check valve SV2, a throttle valve EV, and a shuttle valve OV, where DT1 and DT2 are reversing valves, and the valve body is similar to the control claw in the background art, which is not described in any amount.

The hydraulic control unit 10 is connected with the hydraulic cylinder 4 through a load sensitive system, and is combined with a constant power control mode through the load sensitive system (LS), when the grab bucket starts to grab goods, the hydraulic control unit 10 outputs a high-pressure large flow (according to constant power output), when the grab bucket is about to complete grabbing, the hydraulic control unit outputs a low-pressure small flow (according to constant power output), and after grabbing is completed, the hydraulic control unit keeps pressure with a very small flow output (according to the output: load sensitive intervention).

In the utility model, the hydraulic control unit 10 is connected with the hydraulic cylinder 4 for controlling the gate through the sequence valve 11, and after the claw flaps are grabbed, namely folded, the gate is finally lowered by the hydraulic cylinder under the operation of the sequence valve 11, namely the gate is closed.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. The utility model provides an electronic hydraulic grab bucket for loading, includes rings (1), chain (2), frame (3), pneumatic cylinder (4), motor (5), variable plunger pump (6), claw lamella (7) and control valve piece (8), its characterized in that: the lifting ring (1) is connected with the frame (3) through the chain (2), the frame (3) is of a rectangular structure, one end of the hydraulic cylinder (4) is connected with the upper portion of the long side of the frame (3) of the rectangular structure through a pin shaft, the other end of the hydraulic cylinder (4) is connected with the claw valve (7) through the pin shaft, the claw valve (7) is connected with the lower portion of the frame (3) through the pin shaft, the claw valve (7) is centrally symmetrical with the frame (3), two short sides of the frame (3) are connected with the gate (9) through the hydraulic cylinder (4), and the motor (5), the variable plunger pump (6) and the control valve block (8) are connected in the frame (3) to form a hydraulic control unit (10) of the electric hydraulic grab bucket.

2. The electro-hydraulic truck loading attachment as defined in claim 1 wherein: the gate (9) is positioned between the claw flaps (7), and equidistant gaps are arranged between the gate and the claw flaps (7) on two sides.

3. The electro-hydraulic truck loading attachment as defined in claim 1 wherein: the hydraulic control unit (10) is connected with the hydraulic cylinder (4) through a load sensitive system.

4. The electro-hydraulic truck loading attachment as defined in claim 1 wherein: the hydraulic control unit (10) is connected with the hydraulic cylinder (4) of the control gate through a sequence valve (11).