CN205517983U - Plated hammer of reversed crusher - Google Patents

Abstract

The utility model discloses a part of a crusher, in particular to a blow bar of an impact crusher. It includes a matrix of strip structure, the upper half of the matrix is provided with an outer eaves located on one side of the impact surface and protruding from the matrix, the contour line between the upper rear part of the matrix and the end of the outer eaves is not parallel, the outer eaves of the matrix Both sides are provided with retaining walls protruding from both sides of the base, and the retaining walls extend from the end of the outer eaves to the middle of the upper half of the base. After adopting the above-mentioned structure, while reducing the friction between the material and the edge of the base body, the retaining walls located on both sides of the outer eaves of the base body play a role in retaining the material, so that the broken material will not enter between the blow bar and the side wall of the shell In the gap, thereby preventing the wear of the side edge of the blow bar, ensuring the crushing effect and prolonging the service life of the blow bar.

Description

impact crusher blow bar

technical field

The utility model relates to a part of a crusher, in particular to a blow bar of an impact crusher.

Background technique

Existing impact crushers include a crushing chamber, in which there is a blow bar driven by the rotor, which strikes the material through the high-speed rotation of the rotor. As for the structure of the blow bar, a strip-shaped substrate is generally used traditionally. , one of the end faces of the matrix is used as the striking surface. During the striking process, the blow bar is easy to wear. When the striking surface is worn, a curved surface with missing corners is formed, which changes the stress situation and directly affects the service life of the blow bar. Because there is a gap between the blow bar and the guard plate, the material is easy to enter the gap and be squeezed during the crushing process. This kind of extrusion will cause the edge of the blow bar to wear quickly, and the severe wear will affect the crushing effect, and finally The blow bar is completely scrapped, further shortening the service life of the blow bar.

Contents of the invention

The technical problem to be solved by the utility model is to provide an impact crusher blow bar with ingenious and reasonable structural design, which is not easy to wear and prolongs its service life.

In order to solve the above-mentioned technical problems, the blow bar of the impact crusher of the present invention includes a strip-shaped base body, the upper half of the base body is provided with an outer eaves that are located on one side of the impact surface and protrude from the base body, and the upper rear part of the base body is in contact with the outer eaves. The contour lines between the ends of the eaves are not parallel, and the two sides of the outer eaves of the base are provided with retaining walls protruding from both sides of the base, and the retaining walls extend from the ends of the outer eaves to the middle of the upper half of the base.

The lower half of the base body has the same shape as the upper half and is symmetrical about the center.

After adopting the above-mentioned structure, since the upper half of the matrix is provided with an outer eaves located on one side of the impact surface and protruding from the matrix, the friction between the material and the edge of the matrix is reduced, and the retaining walls located on both sides of the outer eaves of the matrix play a role in retaining materials. As a result, the broken material will not enter the gap between the blow bar and the side wall of the shell, thereby preventing the wear of the side edge of the blow bar, ensuring the crushing effect and prolonging the service life of the blow bar.

Description of drawings

Fig. 1 is the structural representation of blow bar of impact crusher of the present utility model;

FIG. 2 is a schematic diagram of the A-A section structure in FIG. 1 .

detailed description

The blow bar of the impact crusher of the present utility model will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure, the blow bar of the impact crusher of the present invention includes a matrix 1 with a strip structure. The matrix 1 has two sides, an impact surface 4 and a back non-impact surface 5. The upper half of the matrix 1 is provided with a The outer eaves 2 protrude from the base body, and the contour line 6 between the upper rear part of the base body 1 and the end of the outer eaves 2 is not parallel (a broken line), that is, the contour line is higher on the side close to the outer eaves and closer to the other side Lower, both sides of the outer eaves of the base 1 are provided with retaining walls 3 protruding from both sides of the base, and the retaining walls 3 extend from the end of the outer eaves to the middle of the upper half of the base.

Further, the lower half of the base body 1 has the same shape as the upper half, and is centrally symmetrical, thereby forming a four-sided protection structure, wherein the upper and lower sides are outer eaves 2, and the left and right sides are retaining walls 3. When the edge of the blow bar is worn, the material will not be crushed vertically when it hits, but will form an arc-shaped friction crushing form, and the crushing rate will decay rapidly, and the change of the crushing form will cause the blow bar to aggravate wear; the outer eaves set 2 It can prevent the moment when the material to be crushed and the blow bar are in contact, due to the kinetic energy transmission, the material to be crushed is under the action of centrifugal force, so that the contact point of the material and the blow bar forms a relative displacement, and avoids friction and wear of the blow bar due to the relative displacement of the contact point ;The guard wall 3 set prevents the crushed material from penetrating through the gap between both sides of the blow bar and the side guard of the impact crusher casing, causing wear of the blow bar and the side guard, and when the upper half is worn, it can be The blow bar is turned around and installed, and the second half of the blow bar is used to continue to use, which improves the utilization rate of the blow bar and further prolongs the service life of the blow bar.

Claims (2)

1. a board hammer of impact crusher, matrix (1) including list structure, the upper semisection of described matrix (1) is provided with and is positioned at striking face side the outer eaves (2) of prominent matrix, contour line between upper rear and the end of outer eaves (2) of matrix (1) is not parallel, it is characterized in that: the outer eaves both sides of described matrix (1) are provided with the retaining wall (3) being projected on matrix both sides, and described retaining wall (3) is between the end of outer eaves extends in the middle part of matrix upper semisection.

2. according to the board hammer of impact crusher described in claim 1, it is characterised in that: the lower semisection of described matrix (1) is identical with upper semisection shape, and is centrosymmetric.