Solid material crusher wear hammer head

Abstract

The utility model discloses a solid material breaker wear -resisting hammer head belongs to breaker accessory technical field. The hammer head includes the casing, the contact head and is used for the dismounting mechanism of the contact head detachably connected in the casing. The dismounting mechanism includes the fixed block of the integral extension from the casing, and the contact head is internally provided with the installation slot of the fixed block plug -in, a plurality of Y -axis screws and a plurality of X -axis screws are respectively along different direction and are screwed to the fixed block through the contact head, form multi -axial locking, preferably, the contact head inside is provided with the reinforcing rib, and its operation part is sequentially compounded with tenacity alloy layer, hard alloy layer and wear -resisting alloy layer from inside to outside. The utility model discloses the contact head design of replaceable, solved the hammer head wear and tear after the problem of integral replacement, high cost, significantly prolonged the service life, and the reliability of connection was guaranteed to multi -axial locking, and the composite material structure made the hammer head have high wear -resisting and high toughness, and the comprehensive performance was excellent.

Description

Technical Field

[0001] This utility model relates to the technical field of crusher accessories, and in particular to wear-resistant hammers for solid material crushers. Background Technology

[0002] Crushers are indispensable key equipment in industries such as mining, building materials, and chemicals. Their core function is to crush solid materials by violently impacting and grinding them with high-speed rotating hammers. As the wear parts that directly perform the crushing function, the performance and service life of the hammers directly affect the overall production efficiency and operating costs of the crusher.

[0003] In actual operation, the hammerhead undergoes continuous and intense impact and friction with high-hardness solid materials under high-speed rotation, subjecting its working end face to extremely severe wear and impact loads. Currently, most mainstream crusher hammerheads on the market are integrally cast or forged, meaning that the handle used for connection and fixation and the head used for impacting materials are a single integrated structure.

[0004] This unibody structure revealed a significant drawback during use. Wear was primarily concentrated on the hammerhead, which directly contacted the material, while the hammer handle, further away from the work surface, experienced relatively minor wear. However, once the hammerhead wore down to the failure threshold, the entire hammerhead, including the still-intact handle, had to be replaced. This not only resulted in a substantial waste of metal materials but also significantly increased the company's spare parts procurement and equipment maintenance costs, becoming a long-standing problem hindering production efficiency.

[0005] Therefore, this utility model proposes a wear-resistant hammer for a solid material crusher to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problem that the wear-resistant hammers of solid material crushers in the prior art need to be completely discarded and replaced after the working end face is worn, resulting in high maintenance costs and serious material waste, this utility model aims to provide a wear-resistant hammer for solid material crushers with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a wear-resistant hammer for a solid material crusher, comprising: a housing and a contact head; and a disassembly mechanism for detachably connecting the contact head to the housing.

[0008] The disassembly mechanism includes a fixing block extending integrally from the housing, a mounting groove opened inside the contact head, and multiple Y-axis screws and multiple X-axis screws for fastening.

[0009] Furthermore, the housing, the contact head, and the disassembly mechanism are combined in the following manner: the fixing block on the housing is inserted into the mounting groove inside the contact head to form a positioning fit; multiple Y-axis screws pass through the contact head along the first direction and are threaded to the fixing block, while multiple X-axis screws pass through the contact head along the second direction and are threaded to the fixing block. Through this multi-axial screw locking method, the contact head and the housing are firmly assembled into a whole.

[0010] Preferably, the cross-section of the fixing block is dovetail-shaped.

[0011] Preferably, the installation direction of the Y-axis screw is perpendicular to the installation direction of the X-axis screw.

[0012] Preferably, the contact head also has an integrally formed reinforcing rib inside.

[0013] Preferably, the contact head is further provided with a reinforcing component, which includes a tough alloy layer, a hard alloy layer and a wear-resistant alloy layer arranged sequentially from the inside to the outside.

[0014] Preferably, a guide groove is formed on the outer working surface of the wear-resistant alloy layer.

[0015] Preferably, as a specific implementation, the number of Y-axis screws is four and the number of X-axis screws is two.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the entire component of an integral hammer needs to be discarded after the working end face is worn, by setting a disassembly mechanism that can separate the housing from the contact head. It achieves the technical effect of restoring use by only replacing the worn contact head, thereby significantly reducing maintenance costs and extending the overall service life of the hammer.

[0017] 2. This utility model solves the problem of insufficient connection reliability of the split structure in the prior art under severe impact and high-speed rotation conditions by using a fixing block extending from the shell to cooperate with the mounting groove on the contact head, and using multiple Y-axis screws and X-axis screws of different axes to cross-lock. It achieves the technical effect of extremely stable connection, effectively preventing loosening and falling off, and ensuring production safety.

[0018] 3. This utility model solves the problem that single-material hammerheads in the prior art cannot simultaneously meet multiple performance requirements such as impact resistance, fracture resistance and high wear resistance by compounding a tough alloy layer, a hard alloy layer and a wear-resistant alloy layer from the inside to the outside in the working part of the contact head. It achieves the technical effect of comprehensively improving the overall mechanical performance of the hammerhead and being able to cope with complex and harsh working conditions.

[0019] 4. This utility model solves the problems of insufficient hammer structure strength and easy accumulation of material debris during crushing that affect efficiency in the prior art by integrally setting reinforcing ribs inside the contact head and opening a material guide groove on its working surface. It achieves the technical effect of improving the impact resistance and structural stability of the contact head, while improving crushing efficiency and reducing additional wear. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the wear-resistant hammerhead for a solid material crusher proposed in this utility model; Figure 2 This is a schematic diagram of the contact head of the wear-resistant hammerhead for a solid material crusher proposed in this utility model; Figure 3 This is a schematic diagram of the material guide chute for the wear-resistant hammer of the solid material crusher proposed in this utility model; Figure 4 This is a schematic diagram of the fixing block for the wear-resistant hammer of the solid material crusher proposed in this utility model.

[0021] Legend: 1. Shell; 2. Disassembly mechanism; 21. Fixing block; 22. Y-axis screw; 23. Reinforcing rib; 24. X-axis screw; 3. Contact head; 4. Reinforcing components; 41. Tough alloy layer; 42. Hard alloy layer; 43. Wear-resistant alloy layer; 44. Feed chute. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a wear-resistant hammer for a solid material crusher, which aims to solve the problems in the prior art where the hammer needs to be replaced as a whole after wear, resulting in high maintenance costs, and where a single material is difficult to balance wear resistance and toughness.

[0024] like Figure 1As shown, the wear-resistant hammer of the solid material crusher includes a housing 1 and a contact head 3 detachably connected to the housing 1 via a disassembly mechanism 2. The housing 1 serves as the main body of the hammer, with its upper end used to connect to the rotor of the crusher and its lower end used to install the contact head 3. The contact head 3 serves as the working part that directly contacts the material and is used to achieve impact crushing of solid materials. The core of this embodiment lies in the setting of the disassembly mechanism 2, which allows the contact head 3 to be easily replaced after wear and failure, while the housing 1 can be reused, greatly extending the overall service life of the hammer and reducing maintenance costs. Specifically, refer to Figure 2 and Figure 4 The disassembly mechanism 2 includes a fixing block 21 integrally extending from the bottom of the housing 1. The contact head 3 has an internal mounting groove that matches the shape of the fixing block 21. During assembly, the fixing block 21 is inserted into the mounting groove, forming an initial structural positioning fit. To achieve a secure lock, the disassembly mechanism 2 also includes two fasteners in different directions: multiple Y-axis screws 22 and multiple X-axis screws 24. In this embodiment, there are four Y-axis screws 22 and two X-axis screws 24. The four Y-axis screws 22 pass through the contact head 3 along the first direction and are locked by a threaded connection. In the fixing block 21, two X-axis screws 24 pass through the contact head 3 along the second direction and are locked in the fixing block 21 by means of threaded connection; the first direction and the second direction are perpendicular to each other, and this cross screw layout forms an extremely stable multi-axial locking structure, which effectively prevents the contact head 3 from loosening or displacing in any direction when subjected to severe impact and high-speed rotation; furthermore, in order to enhance the stability of the fit, the cross-section of the fixing block 21 is preferably a dovetail structure, and the inner wall of the mounting groove is also set to match the shape accordingly, and the self-locking characteristic of the dovetail shape is used to further improve the reliability of the connection.

[0025] Reference Figure 2 and Figure 3To enhance the overall structural strength and impact resistance of the contact head 3, a reinforcing rib 23 is integrally formed inside the contact head 3. The reinforcing rib 23 acts as an internal skeleton support, significantly enhancing the structural stability of the contact head 3 under tremendous external impact, effectively preventing breakage or deformation due to excessive force. To balance toughness and wear resistance, a reinforcing component 4 is also provided on the contact head 3. The reinforcing component 4 is not a separate part, but refers to the composite material layered structure of the working part of the contact head 3. Specifically, the reinforcing component 4 includes a tough alloy layer 41, a hard alloy layer 42, and a wear-resistant alloy layer 43, sequentially composited from the inside out. The innermost tough alloy layer 41 mainly provides… Excellent toughness absorbs and buffers impact energy; the middle hard alloy layer 42 provides extremely high hardness to resist the strong extrusion of materials and prevent breakage; the outermost wear-resistant alloy layer 43 directly contacts and rubs against the material, and has excellent wear resistance to slow down the wear rate; this gradient performance material design from the inside out enables the contact head 3 to cope with complex impact, extrusion and wear conditions at the same time; in addition, multiple parallel guide grooves 44 are opened on the outer working surface of the wear-resistant alloy layer 43. The function of the guide grooves 44 is to provide discharge channels for the generated debris and powder during the crushing process, avoid the accumulation of materials on the hammer surface and affect the crushing efficiency, and reduce the additional wear caused by it.

[0026] As a preferred embodiment, the cross-section of the fixing block 21 is set to a dovetail shape, and the inner wall of the mounting groove inside the contact head 3 is also set to a matching shape. The wedge-shaped self-locking characteristic of the structure itself enhances the reliability of the connection. To provide sufficient and evenly distributed locking force, the number of Y-axis screws 22 is set to four, and the number of X-axis screws 24 is set to two.

[0027] As a preferred embodiment, a reinforcing rib 23 is integrally formed inside the contact head 3. The reinforcing rib 23 serves as an internal support structure, which improves the impact resistance and deformation resistance of the contact head 3.

[0028] As a preferred embodiment, the reinforcing component 4 specifically includes a tough alloy layer 41, a hard alloy layer 42, and a wear-resistant alloy layer 43 arranged sequentially from the inside to the outside. The multi-layer structure enables the contact head 3 to comprehensively cope with complex working conditions.

[0029] In a preferred embodiment, in order to improve crushing efficiency and reduce wear, a guide groove 44 is provided on the outer working surface of the wear-resistant alloy layer 43. The guide groove 44 is used to guide the crushed material to be discharged in a timely manner during operation.

[0030] The working principle is as follows: During assembly, the mounting groove inside the contact head 3 is first aligned and fitted onto the fixing block 21 at the lower end of the housing 1. The dovetail-shaped cross-section structure provides precise initial positioning and preliminary structural limit for both. Subsequently, multiple Y-axis screws 22 are screwed in and tightened from the first direction, and multiple X-axis screws 24 are screwed in and tightened from the mutually perpendicular second direction. Through this multi-axial threaded connection locking, the contact head 3 is firmly fixed to the housing 1, forming an integral hammer head structure for operation.

[0031] During the operation of the crusher, the hammer rotates at high speed, and the contact head 3 at its front end repeatedly impacts the solid material. The wear-resistant alloy layer 43, which is in direct contact with the material, resists frictional wear with its high wear resistance. At the same time, the guide groove 44 on its surface can guide the debris generated by crushing to be discharged in time, improving crushing efficiency. The huge impact force generated by the material is transmitted to the hard alloy layer 42 and the tough alloy layer 41 in sequence. The hard alloy layer 42 prevents the contact head 3 from breaking with its high hardness, while the tough alloy layer 41 exerts its excellent toughness to absorb and buffer the remaining impact energy. The reinforcing ribs 23 set inside the contact head 3 provide strong structural support for the entire contact head 3, ensuring that it will not suffer structural damage when subjected to extreme impact loads.

[0032] When the working end face of the contact head 3 wears down and fails due to long-term use, the maintenance personnel only need to reverse the operation, loosen and remove the X-axis screw 24 and Y-axis screw 22 in sequence, and remove the scrapped contact head 3 from the fixing block 21. Then, a new contact head 3 is installed and the screws are tightened again to complete the replacement. In the whole process, the more expensive housing 1 part can be retained and reused, thus solving the problem that traditional integral hammer heads must be completely scrapped.

Claims

1. A wear-resistant hammer for a solid material crusher, comprising a housing (1) and a contact head (3), characterized in that, The hammerhead also includes a disassembly mechanism (2) for detachably connecting the contact head (3) to the housing (1). The disassembly mechanism (2) includes: a fixing block (21) integrally extending from the housing (1); An installation groove is provided inside the contact head (3) and its shape is adapted to the fixing block (21), the fixing block (21) is inserted into the installation groove; Multiple Y-axis screws (22) passing through the contact head (3) along the first direction and threaded to the fixing block (21); And a plurality of X-axis screws (24) passing through the contact head (3) along the second direction and threaded to the fixing block (21).

2. The wear-resistant hammerhead for a solid material crusher according to claim 1, characterized in that, The cross-section of the fixing block (21) is dovetail-shaped.

3. The wear-resistant hammerhead for a solid material crusher according to claim 1, characterized in that, The first direction and the second direction are perpendicular to each other.

4. The wear-resistant hammerhead for a solid material crusher according to claim 1, characterized in that, The contact head (3) is also integrally provided with reinforcing ribs (23).

5. The wear-resistant hammerhead for a solid material crusher according to any one of claims 1 to 4, characterized in that, The contact head (3) is also provided with a reinforcing component (4).

6. The wear-resistant hammerhead for a solid material crusher according to claim 5, characterized in that, The reinforcing component (4) includes a tough alloy layer (41), a hard alloy layer (42), and a wear-resistant alloy layer (43) arranged sequentially from the inside to the outside.

7. The wear-resistant hammerhead for a solid material crusher according to claim 6, characterized in that, A guide groove (44) is provided on the outer working surface of the wear-resistant alloy layer (43).

8. The wear-resistant hammerhead for a solid material crusher according to claim 1, characterized in that, The number of Y-axis screws (22) is four, and the number of X-axis screws (24) is two.

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