Positive protection plate for bucket of electric shovel

Abstract

The utility model relates to a front protection plate of an electric shovel bucket, and belongs to the technical field of electric shovel equipment. According to the technical scheme, the front guard plate comprises a bucket body (1) and a front guard plate body (2), the front guard plate body (2) is rectangular, a U-shaped clamping hook (26) is arranged at one end of the rectangle, the U-shaped clamping hook (26) is clamped on the bucket body (1), and a limiting check block (24) matched with the end of the U-shaped clamping hook (26) is arranged on the bucket body (1); a tie bar (21) is arranged in the length direction of the front guard plate body (2), wedge pin holes (27) are formed in the tie bar (21) and the front guard plate body (2), the tie bar (21) and the front guard plate body (2) are connected with the bucket body (1) through wedge pins (23), and hook pins (22) connected with the wedge pins (23) are arranged on the bucket body (1). The electric shovel has the advantages that the service life is long, the equipment failure rate is reduced, and safe production of the electric shovel is guaranteed.

Description

Technical Field

[0001] The utility model relates to a front guard plate of an electric shovel bucket and belongs to the technical field of electric shovel equipment. Background Art

[0002] See attached Figure 1 , 2 As an important part of the electric shovel equipment for loading and handling materials, the bucket is installed at the front end of the lifting arm and is mainly responsible for shoveling, transporting and handling materials. The bucket adopts a cast-welded structure with wearing parts and can be disassembled for easy daily maintenance. The bucket is mainly composed of bucket teeth, bucket body, bucket lifting beam, balance frame, bucket bottom and bucket bottom buffer device and various connecting pins. The bucket body is mainly welded by alloy steel plates that have been quenched and tempered. The front wall of the bucket is welded with replaceable wear-resistant plates and manganese steel casting bucket lips. It is equipped with seven integral bucket teeth and six guard plates. The bucket bottom bending beam is connected to the bucket body pin shaft; the bucket bottom is equipped with manganese steel casting bucket bolts and bucket bolt levers; the lifting beam is welded by alloy steel plates that have been quenched and tempered and connected to the balance frame pin shaft. The bucket teeth are an integral bucket tooth structure, and the bucket teeth, guard plates and bucket lips are connected by wedge-shaped hook pins. When replacing bucket teeth, you only need to knock out the wedge to replace the bucket teeth. The bucket bottom damping device consists of a buffer arm, a friction plate, a spring, an adjusting nut, a joint bearing, and a pin. The device is used to reduce the damage to the bucket bottom plate caused by the impact vibration generated when the bucket bottom device is closed. The damping effect of the buffer device can be changed by adjusting the pressure of the adjusting nut on the spring during use. The bucket bottom device is mainly welded from alloy steel plates that have been quenched and tempered; the opening of the bucket bottom device is achieved by the bucket opening mechanism through the bucket opening chain, bucket opening lever, bucket bolt, etc. The length of the bucket bolt inserted into the bucket bolt socket on the front wall of the bucket can be adjusted by replacing the connecting hole on the bucket opening lever or adjusting the thickness of the gasket.

[0003] The pushing and lifting mechanism of the electric shovel drives the bucket to move forward and backward and up and down. When shoveling materials, a certain amount of friction is generated on the entire inner wall of the bucket, the front section and the external exposed part. Due to long-term and frequent use, the inner wall of the bucket, the front guard plate, the tooth tip and other parts are severely worn. In particular, the front guard plate is directly facing the impact and friction of the material source, and it wears and becomes thinner faster and is more susceptible to damage. After it is damaged, it is more likely to wear the bucket body, causing irreparable damage. Utility Model Content

[0004] The utility model aims to provide an electric shovel bucket front guard plate, which has a long service life, reduces the equipment failure rate, ensures the safe production of the electric shovel, and solves the problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] A front guard plate of an electric shovel bucket comprises a bucket body and a front guard plate body, wherein the front guard plate body is rectangular, and a U-shaped hook is provided at one end of the rectangle, the U-shaped hook is clamped on the bucket body, and the bucket body is provided with a limit block that cooperates with the end of the U-shaped hook; tie bars are provided in the length direction of the front guard plate body, and wedge pin holes are provided on the tie bars and the front guard plate body, the tie bars and the front guard plate body are connected with the bucket body through a wedge pin, and the bucket body is provided with a hook pin connected with the wedge pin.

[0007] The U-shaped hook at one end of the rectangle is a double-layer structure that is thick in the middle and thin on both sides.

[0008] The end of the U-shaped hook at one end of the rectangle is provided with a chamfer matched with the limit stopper.

[0009] One end of the tie rod close to the U-shaped hook is provided with a lifting ring.

[0010] The width of the tie rod is smaller than the width of the front guard plate body.

[0011] The utility model has the beneficial effects of long service life, reduced equipment failure rate and guaranteed safe production of electric shovel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the electric shovel equipment of the background technology;

[0013] Figure 2 This is a schematic diagram of an electric shovel bucket;

[0014] Figure 3 It is a three-dimensional picture of the main body of the front guard plate;

[0015] Figure 4 This is the main view of the front guard plate;

[0016] Figure 5 It is a top view of the main body of the front guard plate;

[0017] Figure 6 It is a schematic diagram of the utility model;

[0018] In the figure: bucket body 1, front guard plate body 2, bucket teeth 3, bucket lifting beam 4, balancing beam 5, lifting steel rope 6, top pulley 7, bucket bottom bending beam 8, bucket arm 9, bucket bottom buffer device 10, top balancing arm of crane arm 11, crane arm 12, and guy rope 13;

[0019] Tie rod 21 , hook pin 22 , wedge pin 23 , limit stop block 24 , chamfer 25 , U-shaped hook 26 , wedge pin hole 27 , and lifting ring 29 . DETAILED DESCRIPTION

[0020] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0021] See attached Figure 3-6 A front guard plate of an electric shovel bucket comprises a bucket body 1 and a front guard plate body 2, wherein the front guard plate body 2 is rectangular, and a U-shaped hook 26 is provided at one end of the rectangle, the U-shaped hook 26 is clamped on the bucket body 1, and the bucket body 1 is provided with a limit block 24 that matches the end of the U-shaped hook 26; a tie rod 21 is provided in the length direction of the front guard plate body 2, and a wedge pin hole 27 is provided on the tie rod 21 and the front guard plate body 2, the tie rod 21 and the front guard plate body 2 are connected with the bucket body 1 through a wedge pin 23, and a hook pin 22 connected with the wedge pin 23 is provided on the bucket body 1.

[0022] In this embodiment, refer to the attached Figure 3-6 The end of the U-shaped hook 26 is provided with a chamfer 25 of 20*45°, which forms a good fitting surface with the limit block 24, and the limit block 24 plays a role in limiting and fixing the positive guard plate.

[0023] The width of the tie rod 21 is smaller than the width of the front guard plate body 2. The tie rod 21 is combined with the front guard plate body 2, and the U-shaped hook 26 adopts a double-layer structure with a thick middle and thin sides, which increases the thickness of the front guard plate that directly contacts the shoveling part and achieves a better material separation effect, thereby increasing the wear resistance and service life of the front guard plate.

Claims

1. A front guard plate for an electric shovel bucket, characterized in that: The invention comprises a bucket body (1) and a front guard plate body (2), wherein the front guard plate body (2) is rectangular, and a U-shaped hook (26) is provided at one end of the rectangle, the U-shaped hook (26) is clamped on the bucket body (1), and the bucket body (1) is provided with a limit stopper (24) that matches the end of the U-shaped hook (26); a tie bar (21) is provided in the length direction of the front guard plate body (2), and a wedge pin hole (27) is provided on the tie bar (21) and the front guard plate body (2), and the tie bar (21) and the front guard plate body (2) are connected to the bucket body (1) through a wedge pin (23), and a hook pin (22) connected to the wedge pin (23) is provided on the bucket body (1).

2. The electric shovel bucket front guard plate according to claim 1 is characterized in that: The U-shaped hook (26) at one end of the rectangle is a double-layer structure with a thick middle and thin sides.

3. The electric shovel bucket front guard plate according to claim 1 or 2, characterized in that: The end of the U-shaped hook (26) at one end of the rectangle is provided with a chamfer (25) that matches the limit stopper (24).

4. The electric shovel bucket front guard plate according to claim 1, characterized in that: A lifting ring (29) is provided at one end of the tie rod (21) close to the U-shaped hook (26).

5. The electric shovel bucket front guard plate according to claim 1 or 4, characterized in that: The width of the tie rod (21) is smaller than the width of the front guard plate body (2).

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