Electric hydraulic multi-petal grab bucket

Abstract

The utility model discloses an electric hydraulic multi-petal grab bucket, and relates to the technical field of multi-petal grab buckets, the electric hydraulic multi-petal grab bucket comprises an equipment body, the equipment body is provided with a plurality of bucket petals, and the ends, away from the equipment body, of the bucket petals are provided with material grabbing parts; one ends of the bucket valves are open, cavities are formed in the bucket valves, clamping blocks attached to the inner side walls of the bucket valves are arranged on the material grabbing part, inserting rods are arranged on the clamping blocks, and inserting plates attached to the clamping blocks are arranged in the bucket valves; a plurality of clamping plates matched with one another are arranged on the sides, away from the grabbing part, of the inserting plates in the bucket valves. One end of each bucket valve is open, each bucket valve is internally provided with a cavity, a clamping block of the material grabbing part is attached to the inner side wall of the corresponding bucket valve, an insertion rod is matched with an insertion hole of an insertion plate, preliminary positioning and mounting of the material grabbing part are facilitated, when the insertion rod is inserted, a clamping plate tightly clamps the insertion rod through an arc-shaped fixing groove, and the stability of connection between the material grabbing part and the bucket valves is further enhanced; in conclusion, the material grabbing part is convenient to mount and dismount, and the maintenance cost and the downtime of the equipment are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of multi-petal grab buckets, in particular to an electric hydraulic multi-petal grab bucket. BACKGROUND

[0002] In the field of material handling today, electric hydraulic multi-petal grab buckets play a crucial role. With the rapid development of industry, the demand for efficient loading and unloading of bulk materials in many places such as ports, mines and construction sites is increasing, and electric hydraulic multi-petal grab buckets have emerged as the times require. It can adapt to various complex working conditions and accurately grasp different shapes and textures of materials such as coal, ore and construction waste, greatly improving the efficiency of material transfer.

[0003] The basic structure of the electric hydraulic multi-petal grab bucket in the prior art usually includes a hydraulic drive system, mechanical transmission components and a plurality of grab bucket petals. For example, a garbage crane, when working, relies on hydraulic power to drive the opening and closing of the grab bucket petals to realize the grabbing action of the garbage material. The grabbing part of most garbage cranes is highly integrated with the bucket petals in design.

[0004] According to the related technology in the above, the inventor believes that since the grabbing part directly contacts and rubs with various sharp and rough garbage materials, it is easy to wear. Once the grabbing part is excessively worn, it will affect the grabbing effect of the grab bucket, resulting in unstable garbage grabbing, material leakage and other phenomena. The existing technology is inconvenient to replace the grabbing part, increasing the maintenance cost and downtime of the equipment. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide an electric hydraulic multi-petal grab bucket to improve the problem of inconvenient replacement of the grabbing part.

[0006] The application provides an electric hydraulic multi-petal grab bucket, which adopts the following technical scheme:

[0007] An electric hydraulic multi-petal grab bucket, comprising a device body, the device body is provided with a plurality of bucket petals, and the end of the bucket petals away from the device body is provided with a grabbing part; characterized in that: the end of the bucket petals is open and has an inner cavity, the grabbing part is provided with a clamping block fitted with the inner side wall of the bucket petals, the clamping block is provided with a plug rod, the inner side of the bucket petals is provided with a plug-in plate fitted with the clamping block, and the plug-in plate is provided with a plug hole for fixing the plug rod; a plurality of clamping plates are arranged on the side of the plug-in plate away from the grabbing part, the clamping plates are provided with arc-shaped fixing grooves fitted with the outer side wall of the plug rod, the side of the clamping plates away from the plug rod is provided with a plurality of elastic elements, and the end of the elastic elements away from the clamping plates is fixedly connected with the inner side wall of the bucket petals.

[0008] By adopting the technical scheme, the bucket valve has one end opening and a built-in cavity, the clamping block of the grabbing part is attached to the inner wall of the bucket valve, the insertion rod is matched with the insertion hole of the insertion plate, the preliminary positioning and installation of the grabbing part are facilitated, the clamping plate and the elastic element in the bucket valve are matched with each other, when the insertion rod is inserted, the elastic element is compressed, the clamping plate is tightly clamped on the insertion rod under the action of the elastic force through the arc-shaped fixing groove, and the stability of the connection between the grabbing part and the bucket valve is further enhanced.

[0009] Optionally, the inner side wall of the insertion hole is provided with an elastic pad attached to the outer side wall of the insertion rod.

[0010] By adopting the technical scheme, when the insertion rod is inserted into the insertion hole, the elastic deformation of the elastic pad can tightly wrap the insertion rod, reduce the shaking of the insertion rod, and improve the stability of the installation of the grabbing part.

[0011] Optionally, the outer side wall of the insertion rod is provided with a fixing ring, and the fixing ring abuts against one side of the clamping plate after the insertion rod passes through the insertion hole and the arc-shaped fixing groove.

[0012] By adopting the technical scheme, the fixing ring on the outer side wall of the insertion rod abuts against one side of the clamping plate after the insertion rod passes through the insertion hole and the arc-shaped fixing groove, the axial movement of the insertion rod is further limited, the possibility of the grabbing part being pulled out due to vibration and the like in the use process is reduced, and the reliability of the connection between the grabbing part and the bucket valve is enhanced.

[0013] Optionally, the fixing ring is tapered in the axial direction of the insertion rod.

[0014] By adopting the technical scheme, the fixing ring can more smoothly pass through the insertion hole and push away the clamping plate during the insertion of the insertion rod, the installation difficulty is reduced, and the installation efficiency is improved.

[0015] Optionally, the arc-shaped fixing groove is provided with a guide chamfer at one end close to the insertion plate.

[0016] By adopting the technical scheme, the guide chamfer provides a guiding effect for the insertion of the insertion rod into the arc-shaped fixing groove, so that the insertion rod can more easily and accurately enter the arc-shaped fixing groove, and the accuracy and convenience of the installation are improved.

[0017] Optionally, the insertion plate is provided with a guide plate attached to both sides of the clamping plate.

[0018] By adopting the technical scheme, the movement of the clamping plate is guided during the insertion of the insertion rod, which is helpful for the cooperation between the clamping plate and the insertion rod, reduces the deviation of the clamping plate under the action of the elastic element, and is helpful for guaranteeing the clamping effect.

[0019] Optionally, the guide plate is provided with a pressing plate bent away from the insertion plate and attached to the clamping plate.

[0020] By adopting the technical scheme, the pressing plate further limits the position of the clamping plate, reduces the shaking or displacement of the clamping plate during the insertion of the insertion rod or the operation of the grab bucket, and enhances the stability of the entire fixing structure.

[0021] Optionally, a fixing nut is threadedly connected to the end of the insertion rod away from the clamping block and abuts against the fixing ring, and a side groove is arranged on one side of the bucket segment for facilitating the rotation operation of the fixing nut.

[0022] By adopting the technical scheme, the connection strength of the grabbing part and the bucket segment can be further enhanced by tightening the fixing nut, and the side groove on one side of the bucket segment facilitates the rotation of the fixing nut by the operator using a tool, thereby improving the fixing stability of the grabbing part.

[0023] To sum up, the present application includes at least one of the following beneficial technical effects of the electric hydraulic multi-segment grab bucket:

[0024] 1. The bucket segment has an opening at one end and a built-in cavity, the clamping block of the grabbing part is attached to the inner wall of the bucket segment, and the insertion rod is matched with the insertion hole of the insertion plate, thereby facilitating the preliminary positioning and installation of the grabbing part, the clamping plate and the elastic member in the bucket segment cooperate with each other, when the insertion rod is inserted, the elastic member is compressed, the clamping plate tightly clamps the insertion rod under the action of the elastic force through the arc-shaped fixing groove, thereby further enhancing the stability of the connection between the grabbing part and the bucket segment; in summary, the installation and disassembly of the grabbing part are facilitated, and the maintenance cost and downtime of the equipment are reduced;

[0025] 2. The fixing ring on the outer wall of the insertion rod abuts against one side of the clamping plate after the insertion rod passes through the insertion hole and the arc-shaped fixing groove, thereby further limiting the axial movement of the insertion rod, reducing the possibility of the grabbing part being pulled out due to vibration and other reasons during use, and enhancing the reliability of the connection between the grabbing part and the bucket segment;

[0026] 3. The connection strength of the grabbing part and the bucket segment can be further enhanced by tightening the fixing nut, and the side groove on one side of the bucket segment facilitates the rotation of the fixing nut by the operator using a tool, thereby improving the fixing stability of the grabbing part. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the overall structure of the device body in the embodiment;

[0028] Figure 2 is a sectional view of the electric hydraulic multi-segment grab bucket structure;

[0029] Figure 3 is Figure 2 the enlarged schematic view of the structure at A in

[0030] In the figure, 1, the device body; 2, the bucket; 21, the plug-in plate; 211, the plug-in hole; 2111, the elastic pad; 22, the side groove; 3, the grabbing part; 31, the clamping block; 311, the plug-in rod; 3111, the fixed ring; 4, the clamping plate; 41, the arc-shaped fixed groove; 411, the guide chamfer; 5, the elastic piece; 6, the guide plate; 61, the pressing plate; 7, the fixed nut. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 , and make a further detailed description of the present application.

[0032] A motor-driven hydraulic multi-petal grab, referring to Figure 1 , Figure 2 , comprising a device body 1, the device body 1 is provided with a plurality of bucket petals 2, the end of the bucket petals 2 away from the device body 1 is provided with a grabbing part 3, the grabbing part 3 is made of metal material with high hardness and certain wear resistance; the bucket petals 2 are open at one end and have a built-in cavity, which provides space for subsequent installation and fixation of the grabbing part 3, the grabbing part 3 is provided with a clamping block 31 closely fitted with the inner wall of the bucket petals 2, and the clamping block 31 and the grabbing part 3 are of an integrated structure.

[0033] Referring to Figure 2 , Figure 3 , the clamping block 31 is welded with a plug-in rod 311, the plug-in rod 311 is a cylindrical metal rod, the plug-in plate 21 closely fitted with the clamping block 31 is fixed in the bucket petals 2 by welding, the plug-in plate 21 is a rectangular flat plate, the plane where it is located is parallel to the opening direction of the bucket petals 2, the plug-in plate 21 is provided with a plug-in hole 211 for the plug-in rod 311 to plug in, the hole diameter of the plug-in hole 211 is slightly larger than the diameter of the plug-in rod 311, so that the plug-in rod 311 can be smoothly inserted, the elastic pad 2111 fitted with the outer side wall of the plug-in rod 311 is pasted and fixed on the inner side wall of the plug-in hole 211, and the elastic pad 2111 can be made of rubber material.

[0034] Referring to Figure 2 , Figure 3 , a plurality of clamping plates 4 cooperating with each other are provided on the side of the bucket petals 2 away from the grabbing part 3, and the embodiment is preferably two, the plurality of clamping plates 4 are provided with arc-shaped fixed grooves 41 fitted with the outer side wall of the plug-in rod 311, the arc of the arc-shaped fixed groove 41 matches the circumferential arc of the plug-in rod 311, the end of the arc-shaped fixed groove 41 close to the plug-in plate 21 is provided with a guide chamfer 411, the guide chamfer 411 is at an angle of 45 degrees, which facilitates the plug-in rod 311 to smoothly slide into the arc-shaped fixed groove 41.

[0035] Referring to Figure 2The guiding plate 6 is fixedly arranged on the two sides of the clamping plate 4 by welding, and the guiding plate 6 is a long strip-shaped plate, the length direction of the guiding plate 6 is consistent with the moving direction of the clamping plate 4, and the guiding plate 6 is provided with a pressing plate 61 which is tightly attached to the clamping plate 4 by being bent by 90 degrees on the side of the guiding plate 6 which is away from the inserting plate 21.

[0036] With reference to Figure 3 The clamping plate 4 is provided with a plurality of elastic members 5 which are fixedly arranged on the side of the clamping plate 4 which is away from the inserting rod 311 by welding, the number of the elastic members 5 is not limited, and the number of the elastic members 5 is preferably three in the embodiment, the elastic members 5 are springs, and the elastic members 5 are fixedly connected to the inner side wall of the bucket valve 2 by welding at the end of the elastic members 5 which is away from the clamping plate 4, and in the normal state, the elastic members 5 are in a compressed state, the clamping plate 4 is given a pressure in the direction of the inserting rod 311, and the clamping plate 4 is tightly clamped to the inserting rod 311.

[0037] With reference to Figure 3 The inserting rod 311 is provided with a fixing ring 3111 which is fixedly arranged on the outer side wall of the inserting rod 311 by welding, the fixing ring 3111 abuts against one side of the clamping plate 4 after the inserting rod 311 passes through the inserting hole 211 and the arc-shaped fixing groove 41, and the fixing ring 3111 is taper-shaped along the axial direction of the inserting rod 311, the taper-shaped structure makes the fixing ring 3111 more smoothly push away the clamping plate 4 during the inserting process, and the fixing ring 3111 is tightly attached to the clamping plate 4 after being inserted in place, and the fixing ring 3111 plays a limiting role.

[0038] The end of the inserting rod 311 which is away from the clamping block 31 is threadedly connected with a fixing nut 7 which abuts against the fixing ring 3111, the fixing nut 7 is a hexagonal nut, the tool is convenient to screw and operate, one side of the bucket valve 2 is provided with a side groove 22 which is convenient to rotate and operate the fixing nut 7, the operator can easily screw the fixing nut 7 by inserting the tool into the side groove 22, and the quick installation and disassembly of the grabbing part 3 are realized.

[0039] The implementation principle of the embodiment is as follows:

[0040] During the actual installation of the grabbing part 3, the clamping block 31 of the grabbing part 3 is inserted into the cavity of the bucket valve 2, the inserting rod 311 is aligned and inserted into the inserting hole 211 of the inserting plate 21, the elastic pad 2111 of the inserting hole 211 buffers and fixes the inserting rod 311, the inserting rod 311 slides into the arc-shaped fixing groove 41 through the guiding chamfer 411, the elastic member 5 is compressed, the elastic member 5 drives the clamping plate 4 to clamp and fix the inserting rod 311, the fixing ring 3111 abuts against the clamping plate 4, and the fixing nut 7 at the side groove 22 is screwed to complete the installation; when the grabbing part 3 needs to be disassembled due to wear, the fixing nut 7 is unscrewed first, the limitation on the fixing ring 3111 is removed, and the inserting rod 311 is pulled out by pulling the grabbing part 3, which is helpful to reduce the complex process, reduce the maintenance cost and downtime.

[0041] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electro-hydraulic multi-lobed grab bucket, comprising a device body (1), wherein the device body (1) is provided with a plurality of lobes (2), and a grabbing part (3) is provided at the end of each lobe (2) away from the device body (1); characterized in that: The hopper (2) has an open end and an internal cavity. The material gripping part (3) is provided with a locking block (31) that fits against the inner wall of the hopper (2). The locking block (31) is provided with a plug rod (311). The hopper (2) is provided with a plug plate (21) that fits against the locking block (31). The plug plate (21) is provided with a through hole (211) for the plug rod (311) to be inserted and fixed. The hopper (2) is provided with a number of mutually cooperating clamping plates (4) on the side of the plug plate (21) away from the material gripping part (3). The clamping plates (4) are provided with an arc-shaped fixing groove (41) that fits against the outer wall of the plug rod (311). The side of the clamping plate (4) away from the plug rod (311) is provided with a number of elastic elements (5). The end of the elastic element (5) away from the clamping plate (4) is fixedly connected to the inner wall of the hopper (2).

2. The electro-hydraulic multi-lobed grab bucket according to claim 1, characterized in that: The inner wall of the insertion hole (211) is provided with an elastic pad (2111) that fits the outer wall of the insertion rod (311).

3. The electro-hydraulic multi-lobed grab bucket according to claim 2, characterized in that: A fixing ring (3111) is provided on the outer wall of the insertion rod (311). The fixing ring (3111) passes through the insertion hole (211) and the arc-shaped fixing groove (41) along with the insertion rod (311) and then abuts against one side of the clamping plate (4).

4. The electro-hydraulic multi-lobed grab bucket according to claim 3, characterized in that: The fixing ring (3111) is tapered along the axial direction of the insertion rod (311).

5. An electro-hydraulic multi-lobed grab bucket according to claim 1, characterized in that: The arc-shaped fixing groove (41) has a guide chamfer (411) at one end near the plug-in plate (21).

6. An electro-hydraulic multi-lobed grab bucket according to claim 5, characterized in that: The plug-in plate (21) is fitted with guide plates (6) on both sides of the clamping plate (4).

7. An electro-hydraulic multi-lobed grab bucket according to claim 6, characterized in that: The guide plate (6) is bent on the side away from the plug plate (21) and a pressure plate (61) is provided to fit the clamping plate (4).

8. An electro-hydraulic multi-lobed grab bucket according to claim 3, characterized in that: The end of the insert rod (311) away from the locking block (31) is threaded with a fixing nut (7) that abuts against the fixing ring (3111), and a side groove (22) is provided on one side of the bucket petal (2) to facilitate the rotation of the fixing nut (7).

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