Wear-resistant hammer head of crusher

Abstract

The wear-resistant hammer head comprises a hammer body, a connecting arm is fixedly installed on the outer surface of the upper end of the hammer body, an installation hole is formed in the upper portion of the outer surface of one side of the connecting arm, a sleeve shell is arranged on the outer wall of the hammer body in a sleeved mode, a plating layer is arranged on the outer wall of the sleeve shell, and through holes are formed in the four corners of the outer surface of the lower end of the hammer body. Screw rods are fixedly installed at the four corners of the bottom of an inner cavity of the sleeve shell, and the upper portions of the screw rods are in threaded connection with nuts. According to the wear-resistant hammer head of the crusher, the sleeve shell is arranged on the outer wall of the hammer body, the sleeve shell can be independently replaced after being worn, the maintenance cost is reduced, the outer wall of the sleeve shell is provided with the plating layer, the surface of the sleeve shell is plated with a high-hardness material, and the plating layer is made of tungsten carbide, so that the wear resistance is improved.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to wear-resistant hammers for crushers. Background Technology

[0002] The hammer is the core component of a crusher, mainly used for high-speed rotating impact on materials to crush them.

[0003] The hammerheads in the prior art have the following disadvantages when in use:

[0004] 1. Poor wear resistance: The hammerhead is generally made of high-chromium cast iron, which has a certain strength and wear resistance. However, the daily working intensity of the crusher is high, and the wear rate of the hammerhead surface is still relatively fast.

[0005] 2. High maintenance costs: After the wear and tear reaches a certain level, the entire unit needs to be replaced, resulting in high maintenance costs.

[0006] Therefore, we propose wear-resistant hammers for crushers. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of the shortcomings of the prior art, this utility model provides a wear-resistant hammer for crushers, which has the advantages of reducing maintenance costs and high wear resistance, and can effectively solve the problems in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wear-resistant hammer for a crusher, comprising a hammer body, a connecting arm fixedly installed on the upper outer surface of the hammer body, an installation hole opened on the upper part of one side of the outer surface of the connecting arm, a sleeve fitted on the outer wall of the hammer body, a coating provided on the outer wall of the sleeve, through holes opened at the four corners of the lower outer surface of the hammer body, and screws fixedly installed at the four corners of the bottom of the inner cavity of the sleeve, with nuts threadedly connected to the upper part of the screws.

[0011] Preferably, the upper end of the screw extends through the through hole to the upper part of the hammer body.

[0012] Preferably, the coating material is tungsten carbide.

[0013] Preferably, the hammer body, connecting arm, and casing are all made of high-chromium cast iron.

[0014] Preferably, a mounting groove is provided in the middle of the lower outer surface of the hammer body, a disc spring is provided inside the mounting groove, a movable block is fixedly installed at the lower part of the disc spring, and the upper outer surface of the disc spring is fixedly connected to the upper part of the mounting groove.

[0015] Preferably, the outer wall of the movable block is slidably connected to the mounting groove, and the upper outer surface of the movable block is elastically connected to the upper end of the mounting groove through a disc spring.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a wear-resistant hammer for a crusher, which has the following beneficial effects:

[0018] 1. The wear-resistant hammer of this crusher has a sleeve installed on the outer wall of the hammer body. The sleeve can be replaced separately after it wears out, reducing maintenance costs.

[0019] 2. The wear-resistant hammer of this crusher has a coating on the outer wall of the casing. The coating material is tungsten carbide, which improves wear resistance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the wear-resistant hammerhead for the crusher according to this utility model.

[0021] Figure 2 This is a schematic diagram of the hammer body and connecting arm in the wear-resistant hammer head of the crusher of this utility model.

[0022] Figure 3 This is a partial structural schematic diagram of the wear-resistant hammerhead for the crusher according to this utility model.

[0023] Figure 4 This is a side cross-sectional view of the hammer body in the wear-resistant hammerhead of the crusher of this utility model.

[0024] In the diagram: 1. Hammer body; 2. Connecting arm; 3. Mounting hole; 4. Sleeve; 5. Plating; 6. Through hole; 7. Screw; 8. Nut; 9. Mounting groove; 10. Movable block; 11. Disc spring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] This embodiment is a wear-resistant hammerhead for a crusher.

[0027] like Figure 1-4 As shown, the hammer body 1 is included. A connecting arm 2 is fixedly installed on the upper outer surface of the hammer body 1. A mounting hole 3 is opened on the upper part of the outer surface of one side of the connecting arm 2. A sleeve 4 is fitted on the outer wall of the hammer body 1. A plating layer 5 is provided on the outer wall of the sleeve 4. Through holes 6 are opened at the four corners of the lower outer surface of the hammer body 1. Screws 7 are fixedly installed at the four corners of the bottom of the inner cavity of the sleeve 4. A nut 8 is threadedly connected to the upper part of the screw 7.

[0028] The upper end of the screw 7 extends through the through hole 6 to the upper part of the hammer body 1; the plating material 5 is tungsten carbide; the hammer body 1, the connecting arm 2 and the sleeve 4 are all made of high-chromium cast iron; a mounting groove 9 is provided in the middle of the lower outer surface of the hammer body 1, a disc spring 11 is provided inside the mounting groove 9, a movable block 10 is fixedly installed at the lower part of the disc spring 11, and the upper outer surface of the disc spring 11 is fixedly connected to the upper part of the mounting groove 9; the outer wall of the movable block 10 is slidably connected to the mounting groove 9, and the upper outer surface of the movable block 10 is elastically connected to the upper end of the mounting groove 9 through the disc spring 11.

[0029] It should be noted that this utility model is a wear-resistant hammer for a crusher. Both the hammer body 1 and the sleeve 4 are made of high-chromium cast iron. When connecting the sleeve 4 and the hammer body 1, the sleeve 4 is fitted onto the outer wall of the hammer body 1, so that the screw 7 passes through the through hole 6. Then, the nut 8 is installed on the upper end of the screw 7, thereby realizing the installation of the sleeve 4. The sleeve 4 can be replaced separately after wear, reducing maintenance costs. After installation, since the hammer body 1 is inserted into the interior of the coating 5, the movable block 10 at the lower end of the hammer body 1 is squeezed and pushed into the mounting groove 9. The disc spring 11 is squeezed and provides continuous preload, increasing the stability of the connection between the nut 8 and the screw 7. A coating 5 is provided on the outer wall of the sleeve 4. The coating 5 material is tungsten carbide, which improves wear resistance.

[0030] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A wear-resistant hammer for a crusher, comprising a hammer body (1), wherein a connecting arm (2) is fixedly mounted on the upper outer surface of the hammer body (1), and a mounting hole (3) is provided on the upper part of the outer surface of one side of the connecting arm (2), characterized in that: The outer wall of the hammer body (1) is fitted with a shell (4), the outer wall of the shell (4) is provided with a plating layer (5), the four corners of the lower outer surface of the hammer body (1) are provided with through holes (6), the four corners of the bottom of the inner cavity of the shell (4) are fixedly installed with screws (7), and the upper part of the screws (7) is threaded with nuts (8).

2. The wear-resistant hammerhead for a crusher according to claim 1, characterized in that: The upper end of the screw (7) extends through the through hole (6) to the upper part of the hammer body (1).

3. The wear-resistant hammerhead for a crusher according to claim 2, characterized in that: The coating material (5) is tungsten carbide.

4. The wear-resistant hammerhead for a crusher according to claim 3, characterized in that: The hammer body (1), connecting arm (2) and casing (4) are all made of high-chromium cast iron.

5. The wear-resistant hammerhead for a crusher according to claim 4, characterized in that: The hammer body (1) has a mounting groove (9) in the middle of the lower outer surface. A disc spring (11) is installed inside the mounting groove (9). A movable block (10) is fixedly installed on the lower part of the disc spring (11). The upper outer surface of the disc spring (11) is fixedly connected to the upper part of the mounting groove (9).

6. The wear-resistant hammerhead for a crusher according to claim 5, characterized in that: The outer wall of the movable block (10) is slidably connected to the mounting groove (9), and the upper outer surface of the movable block (10) is elastically connected to the upper end of the mounting groove (9) through a disc spring (11).

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