Hammerhead structure of impact crusher

Abstract

The utility model discloses a hammer head structure of an impact crusher, and belongs to the technical field of crushing equipment. A hammer head structure of an impact crusher comprises a plate hammer body, a detachable plate hammer head is arranged at the top of the plate hammer body, the plate hammer head comprises a transverse plate and a vertical plate connected with one end of the transverse plate, the section of the plate hammer head is in a 7 shape, the transverse plate is connected with the top of the plate hammer body, the vertical plate is connected with the top of the side wall of the plate hammer body, and the top face of the transverse plate is an arc face. The cambered surface and the rotor frame are of a coaxial structure; the utility model has the advantages of long service life and reduced material resource waste.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing equipment, in particular to a hammer head structure of an impact crusher. Background Art

[0002] Impact crusher, also known as impact crusher, is mainly used for material processing in metallurgy, chemical industry, building materials, hydropower and other industries that often need to be relocated. It can be configured in a variety of ways according to the type of raw materials, scale and requirements of finished materials. Impact crusher can process materials with a side length of 100-500 mm or less, with a maximum compressive strength of 350 MPa, a large crushing ratio, and cubic particles after crushing. It is widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical industry and other industries for medium and fine crushing of materials.

[0003] The impact frame and hammer structure (also known as plate hammer) are the core crushing parts of the impact crusher. After the material enters the impact crusher, it hits the impact frame mainly under the hammering action of the hammer head, and repeated high-speed collisions occur between the hammer head and the impact frame, and then it is broken into small pieces. Therefore, the hammer head and the impact frame are the vulnerable parts of the impact crusher and often need to be replaced.

[0004] After searching, the utility model with the announcement number CN210752980U discloses a highly wear-resistant impact crusher hammer structure, including: a hammer head, which is in the shape of a cube; two hammer cakes, both of which are arranged on the hammer head; two mounting parts, which are in the shape of annular rings, respectively arranged on the hammer cakes, and are provided with circular mounting holes therein, which are used to connect the external connecting shaft; a clamping part is provided on a right side surface perpendicular to the busbar of the hammer head and the mounting part, and a mounting groove is provided on a left side surface perpendicular to the busbar of the mounting part, and the clamping part can be installed in the mounting groove. Compared with the existing hammer head, this device can be conveniently connected with the connecting shaft of the driving device, does not require additional fixing, and has a wear-resistant effect.

[0005] However, the hammer head in this scheme is made of high manganese steel in a cubic shape. Since the hammer head rotates in a circle on the rotor frame during operation and the size of the crushed particles needs to be controlled by the gap between the hammer head and the impact frame, after long-term use, the hammer head is mainly worn on the top and the side close to the impact frame. Therefore, during the use of this shape of hammer head, when the side of the hammer head close to the impact frame is severely worn and needs to be replaced, a large amount of high-value material is left on the side of the hammer head away from the impact frame, resulting in low material utilization and waste of resources. Utility Model Content

[0006] The utility model aims to solve the problems of low material utilization and waste of resources in the use of the hammer structure of the crusher in the prior art, and proposes a hammer structure of an impact crusher.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A hammer head structure of an impact crusher includes a plate hammer body, a detachable plate hammer head is arranged on the top of the plate hammer body, the plate hammer head includes a horizontal plate and a vertical plate connected to one end of the horizontal plate, the cross-section of the plate hammer head is in the shape of "7", the horizontal plate is connected to the top of the plate hammer body, the vertical plate is connected to the top of the side wall of the plate hammer body, the top surface of the horizontal plate is an arc surface, and the arc surface and the rotor frame are coaxial structures.

[0009] Furthermore, the plate hammer body includes a main body mounting part for clamping in the rotor frame, a main body crushing part is arranged on the top of the main body mounting part, the top of the main body crushing part is connected to the horizontal plate, and the side of the main body crushing part is connected to the vertical plate.

[0010] Furthermore, a first screw hole is provided on the side of the main crushing part, and the plate hammer head includes a hammer head mounting part located at the lower part, and a second screw hole corresponding to the first screw hole is opened on the hammer head mounting part. Bolts are provided in the first screw hole and the second screw hole, and the plate hammer head is connected to the plate hammer body by bolts.

[0011] Furthermore, a hammer crushing part is arranged on the top of the hammer mounting part, and the hammer crushing part is made of high-strength matrix steel.

[0012] Furthermore, a first fastening strip cooperating with the extrusion plate is arranged on one side of the main body mounting portion, and a second fastening strip cooperating with the locking block is arranged on the other side.

[0013] Furthermore, the cross-section of the plate hammer body and the plate hammer head as a whole is fan-shaped, and the vertical plate is located on the concave surface of the plate hammer body.

[0014] Furthermore, the included angle between the horizontal plate and the vertical plate is an arc angle.

[0015] Compared with the prior art, the utility model provides a hammer head structure of an impact crusher, which has the following beneficial effects:

[0016] The utility model discloses a hammer structure of an impact crusher. When in use, the plate hammer head is directed upwards and the vertical plate is directed toward the impact frame, and then the plate hammer body is clamped and fixedly installed in the rotor frame. When working, the rotor frame drives the hammer structure to rotate, and the horizontal plate and the vertical plate collide with the material at high speed, throwing the material toward the impact frame, and the material is mainly crushed by repeated hammering between the impact frame and the vertical plate, so the wear mainly occurs on the horizontal plate and the vertical plate. When the horizontal plate and the vertical plate are worn out, the plate hammer head is removed for replacement, the horizontal and vertical thicknesses of the plate hammer head are close, and the degree of wear is also close. Compared with the hammer structure in the prior art, when the horizontal plate and the vertical plate on the hammer structure are almost worn out, the plate hammer head can be replaced without replacing the plate hammer body, and the material waste of the plate hammer head is reduced at the same time.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure decomposition effect of the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the structure enlargement of part A;

[0021] Figure 4 It is a three-dimensional schematic diagram of the installation effect of the utility model;

[0022] Figure 5 This is a schematic diagram of the main installation effect of the utility model;

[0023] Figure 6 It is a schematic diagram of the parabolic trajectory when the plate hammer head of the utility model hammers the material.

[0024] In the figure:

[0025] 1. Plate hammer body; 101. Body mounting part; 102. Body crushing part; 103. First fastening strip; 104. Second fastening strip; 2. Plate hammer head; 201. Hammer head mounting part; 202. Hammer head crushing part; 3. First screw hole; 4. Second screw hole; 5. Bolt; 6. Rotor frame; 7. Extrusion plate; 8. Locking block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 1-5 The utility model discloses a hammer structure of an impact crusher, comprising a plate hammer body 1, a detachable plate hammer head 2 is arranged on the top of the plate hammer body 1, the plate hammer head 2 comprises a horizontal plate and a vertical plate connected to one end of the horizontal plate, the cross section of the plate hammer head 2 is in the shape of "7", the horizontal plate is connected to the top of the plate hammer body 1, the vertical plate is connected to the top of the side wall of the plate hammer body 1, the top surface of the horizontal plate is an arc surface, and the arc surface and the rotor frame 6 are coaxial structures.

[0028] The cross section of the plate hammer head 2 is in the shape of "7", or in the shape of an inverted "7" that is symmetrical to the left and right of the "7", or in the shape of an "L" and in the shape of an inverted "L" that is symmetrical to the left and right of the "L". When installed, the vertical plate faces the side where the impact frame is located, and the materials are impacted and crushed through the outer wall surfaces of the vertical plate and the horizontal plate. The thickness of the horizontal plate is the same as that of the vertical plate, and the thickness of the horizontal plate is the same as the maximum adjustment size of the impact frame of the impact crusher. When the horizontal plate and the vertical plate are worn, the movement trajectory of the top of the horizontal plate (such as Figure 5 The radius of the dotted circular trajectory in the figure decreases. At this time, the impact frame is adjusted close to the rotor frame as needed, so that the distance between the impact frame and the top of the cross plate remains unchanged, so that the size of the material that can pass through the distance remains unchanged, that is, the particle size of the material produced by the impact crusher remains unchanged. Until the plate hammer head 2 is worn to the point of being unusable, the worn plate hammer head 2 is removed and replaced with a new one.

[0029] Since the horizontal plate and the vertical plate have the same thickness and similar wear degrees, the plate hammer head 2 can be utilized to the maximum extent to reduce material waste. At the same time, there is no need to replace the plate hammer body 1 during replacement, further reducing resource waste.

[0030] The plate hammer body 1 comprises a main body mounting portion 101 for clamping in the rotor frame 6, a main body crushing portion 102 is arranged on the top of the main body mounting portion 101, the top of the main body crushing portion 102 is connected to the horizontal plate, and the side of the main body crushing portion 102 is connected to the vertical plate.

[0031] The rotor frame 6 is provided with a mounting groove for mounting the plate hammer body 1, and the main body mounting portion 101 is located in the mounting groove for connecting the hammer head structure with the rotor frame 6.

[0032] The main invention of the present application lies in the cross-sectional shape of the plate hammer body 1 and the plate hammer head 2 and the connection method between the two. The shape and length of the main body mounting portion 101 are not unique. The existing plate hammer structure can be adopted to cooperate with the extrusion plate 7 and the locking block 8 to be connected to the rotor frame. This is a mature existing technology and will not be repeated here.

[0033] A first screw hole 3 is provided on the side of the main crushing part 102, and the plate hammer head 2 includes a hammer head mounting part 201 located at the lower part, and a second screw hole 4 corresponding to the first screw hole 3 is opened on the hammer head mounting part 201. Bolts 5 are provided in the first screw hole 3 and the second screw hole 4, and the plate hammer head 2 is connected to the plate hammer body 1 through the bolts 5.

[0034] The main crushing part 102 is used to install the plate hammer head 2 and support the plate hammer head 2 to complete the crushing work. The plate hammer head 2 is composed of a vertical plate and a horizontal plate, or the plate hammer head 2 is composed of a hammer head mounting part 201 and a hammer head crushing part 202, wherein the lower part of the vertical plate is the hammer head mounting part, and the upper part of the vertical plate and the horizontal plate constitute the hammer head crushing part 202, the hammer head mounting part 201 is clamped and fixed in the rotor frame 6 with the main mounting part 101, and the hammer head crushing part 202 is installed on the main crushing part 102.

[0035] After the bolt 5 is screwed into the first screw hole 3 and the second screw hole 4 , it is installed in the installation groove of the rotor frame 6 together with the hammer head installation part 201 to avoid being damaged.

[0036] A hammer crushing part 202 is provided on the top of the hammer mounting part 201 , and the hammer crushing part 202 is made of high-strength matrix steel.

[0037] The code name of high-strength matrix steel 6Cr4Mo3Ni2WV is CG2. The hammer head mounting part 201 and the plate hammer body 1 can be made of high manganese steel. Since the plate hammer in the prior art is mainly made of high manganese steel, while ensuring the structural strength, the mechanical properties of the hammer head crushing part 202 are further improved by using high-strength matrix steel to increase the service life.

[0038] A first fastening strip 103 cooperating with the extrusion plate 7 is disposed on one side of the main body mounting portion 101 , and a second fastening strip 104 cooperating with the locking block 8 is disposed on the other side.

[0039] The cross-section of the first fastening strip 103 and the second fastening strip 104 can be fan-shaped, trapezoidal, or other shapes available in the prior art, and is mainly used to engage with the extrusion plate 7 or the locking block 8. The specific shape can be selected according to the structure of the extrusion plate and the locking block in the prior art.

[0040] The whole cross section of the blow hammer body 1 and the blow hammer head 2 is fan-shaped, and the vertical plate is located on the concave surface of the blow hammer body.

[0041] Since the hammer head structure moves in a circular motion during operation, and one of its main functions is to throw the material onto the impact plate, Figure 6As shown, compared with the straight plate type hammer head structure, during the rotation process, the fan-shaped hammer head structure mainly throws the material in a slightly inclined direction close to the cut angle where it is locked in position, while the arc-shaped concave surface of the plate hammer head 2 in the present hammer head structure facilitates the hammering and throwing of the material in an oblique upward direction. Under the same application environment, the present hammer head structure can throw more materials onto the impact frame located obliquely above the hammer head.

[0042] The included angle between the horizontal plate and the vertical plate is an arc angle.

[0043] On the plate hammer head 2, the most severely worn part is the outer wall of the connection between the horizontal plate and the vertical plate, that is, Figure 3 The positive angle position relative to the arc angle of the plate hammer head 2 is shown as the edge at the connection between the horizontal plate and the vertical plate. Therefore, the arc angle structure can effectively increase the vertical distance from the edge to the arc angle of the plate hammer head 2. When the edge is more severely worn than the outer wall surface of the horizontal plate and the vertical plate, the thickness of this position is increased, so that the wear life of the edge (which also forms an arc surface after wear) is similar to that of the horizontal plate and the vertical plate as a whole, thereby making the overall wear degree of the plate hammer head 2 close (when the connection between the horizontal plate and the vertical plate is about to be worn through, the horizontal plate and the vertical plate themselves are about to be worn through), reducing material waste.

[0044] Working principle: During installation, the hammer head structure is installed on the rotor frame 6 of the impact crusher so that the vertical plate of the plate hammer head 2 faces the impact frame; during operation, the horizontal plate and the vertical plate collide with the material and throw the material to the impact frame, so that the material is repeatedly hammered between the impact frame and the horizontal plate and the vertical plate to be crushed. When the horizontal plate and the vertical plate are worn to a certain extent, the impact frame of the impact crusher is adjusted to be close to the hammer head structure to adjust the distance between the impact frame and the plate hammer head 2; when the plate hammer head 2 is worn through, the plate hammer body 1 and the plate hammer head 2 are removed, replaced with a new plate hammer head 2, and reinstalled on the rotor frame 6.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hammer head structure of an impact crusher, comprising a plate hammer body (1), characterized in that: A detachable hammer head (2) is arranged on the top of the hammer body (1), the hammer head (2) comprising a horizontal plate and a vertical plate connected to one end of the horizontal plate, the cross section of the hammer head (2) is in the shape of a letter "7", the horizontal plate is connected to the top of the hammer body (1), the vertical plate is connected to the top of the side wall of the hammer body (1), the top surface of the horizontal plate is an arc surface, and the arc surface and the rotor frame (6) are coaxial structures.

2. The hammer head structure of an impact crusher according to claim 1, characterized in that: The plate hammer body (1) comprises a body mounting portion (101) for clamping in a rotor frame (6); a body crushing portion (102) is arranged on the top of the body mounting portion (101); the top of the body crushing portion (102) is connected to a horizontal plate; and the side of the body crushing portion (102) is connected to a vertical plate.

3. The hammer head structure of an impact crusher according to claim 2, characterized in that: A first screw hole (3) is provided on the side of the main crushing part (102); the plate hammer head (2) includes a hammer head mounting part (201) located at the bottom; a second screw hole (4) corresponding to the first screw hole (3) is provided on the hammer head mounting part (201); bolts (5) are provided in the first screw hole (3) and the second screw hole (4); and the plate hammer head (2) is connected to the plate hammer main body (1) via the bolts (5).

4. The hammer head structure of an impact crusher according to claim 3, characterized in that: A hammer crushing portion (202) is provided on the top of the hammer mounting portion (201), and the hammer crushing portion (202) is made of high-strength matrix steel.

5. The hammer head structure of an impact crusher according to claim 2, characterized in that: One side of the main body mounting portion (101) is provided with a first fastening strip (103) that cooperates with the extrusion plate (7), and the other side is provided with a second fastening strip (104) that cooperates with the locking block (8).

6. The hammer head structure of an impact crusher according to claim 1, characterized in that: The overall cross-section of the plate hammer body (1) and the plate hammer head (2) is in the shape of a fan ring, and the vertical plate is located on the concave surface of the plate hammer body.

7. The hammer head structure of an impact crusher according to claim 1, characterized in that: The included angle between the horizontal plate and the vertical plate is an arc angle.

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