A more reliable body rib high chromium plate hammer

Abstract

The utility model relates to a more reliable body rib high -chromium plate hammer belongs to high -chromium plate hammer technical field, including high -chromium plate hammer body, the reinforcing installation structure that can improve its installation intensity is set up on the upper surface of high -chromium plate hammer body, the reinforcing installation structure includes the reinforced connecting seat of setting in the high -chromium plate hammer body inside and extending to its upper surface, the upper surface of reinforced connecting seat is seted up with internal thread hole. The more reliable body rib high -chromium plate hammer, through setting up independent reinforced connecting seat in high -chromium plate hammer body, and will internal thread hole set up on it, will the poor stress performance brittle high -chromium cast iron and the screw thread connection part that needs to bear the complicated stress are separated, this makes bolt pretightening force and work impact force by tenacity, the higher strength alloy steel connecting seat bears, fundamentally eliminates the failure risk such as collapse tooth, brittle fracture caused by directly tapping on high -chromium cast iron, greatly improves the reliability and security of installation.

Description

Technical Field

[0001] This utility model relates to the field of high-chromium plate hammer technology, specifically a more reliable high-chromium plate hammer with body thread. Background Technology

[0002] High-chromium hammer plates are core wear parts of crushing equipment (such as impact crushers and cone crushers). Made primarily of high-chromium alloy, they achieve a balance of high hardness, high wear resistance, and a certain degree of impact resistance through optimized composition design and heat treatment processes. They are mainly used for impact crushing of materials such as ores, rocks, and construction waste, and are key components in the material crushing process of industries such as mining, construction, and metallurgy. High-chromium cast iron, due to its extremely high hardness and excellent wear resistance, has become the preferred material for manufacturing hammer plates, effectively extending the service life of equipment when crushing high-hardness materials (such as granite and basalt).

[0003] Chinese utility model patent CN216440775U discloses a high-chromium composite ceramic hammer, comprising a hammer body, a first locking portion, a second locking portion, and a flange. The first locking portion and the second locking portion are disposed on opposite sides of the hammer body. There are two first locking portions and one second locking portion. The flange is located on the same side of the hammer body as the second locking portion. The flange is a right-angled trapezoid, and its right-angled side is flush with the edge of the hammer body. The flange extends in a straight line from one end of the hammer body to the other end. The high-chromium composite ceramic hammer provided by this utility model can extend the service life of the hammer.

[0004] However, during the use of this utility model, while high-chromium cast iron has high wear resistance, it is essentially a brittle material with poor toughness and plasticity. This material characteristic makes it risky to directly machine threaded holes on the body of the high-chromium cast iron hammer, which cannot meet production needs. Therefore, a more reliable high-chromium hammer with body thread is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a more reliable high-chromium plate hammer with body thread, which has the advantage of improving the installation strength of the hammer. It solves the problem that the reliability and service life of existing high-chromium plate hammers with body thread do not fully utilize the wear resistance of high-chromium cast iron materials, and the weak link of the threaded connection has become a bottleneck restricting its overall performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a more reliable high-chromium plate hammer with body thread, comprising a high-chromium plate hammer body, wherein a reinforcing installation structure capable of improving its installation strength is provided on the upper surface of the high-chromium plate hammer body.

[0007] The reinforcement installation structure includes a reinforcing connecting seat disposed inside the high-chromium hammer body and extending to its upper surface. The upper surface of the reinforcing connecting seat is provided with an internal threaded hole, the upper surface of the high-chromium hammer body is provided with an installation hole, and the interior of the high-chromium hammer body is provided with a prefabricated groove adapted to the reinforcing connecting seat.

[0008] Furthermore, the reinforced connecting seat and the high-chromium plate hammer body are bonded together by vacuum brazing, and the axis of the internal threaded hole is parallel to the axis of the mounting hole.

[0009] Furthermore, the prefabricated groove is inverted T-shaped, and the contact surface between the reinforced connecting seat and the prefabricated groove is fixed by welding.

[0010] Furthermore, there are two reinforced connecting seats, which are symmetrically distributed inside the high-chromium plate hammer body, and the outer surface of the reinforced connecting seats is provided with an anti-rust coating.

[0011] Furthermore, a cemented carbide block is embedded in the bottom of the high-chromium hammer body, and a high-vanadium high-speed steel bar is fixedly connected to the side of the high-chromium hammer body near the cemented carbide block.

[0012] Furthermore, a reinforcing composite layer is provided on the side of the high-chromium hammer body near the cemented carbide block. The reinforcing composite layer consists of a high-toughness alloy steel substrate, a mechanical interlocking bonding layer, a high-chromium cast iron working layer, and a cemented carbide local reinforcement layer.

[0013] Furthermore, the high-toughness alloy steel substrate is disposed on the lower surface of the high-chromium plate hammer body, the mechanical interlocking bonding layer is disposed between the high-toughness alloy steel substrate and the high-chromium cast iron working layer, and the cemented carbide local reinforcement layer is disposed on the outer surface of the cemented carbide block and the high-vanadium high-speed steel strip respectively.

[0014] Compared with the prior art, this utility model provides a more reliable high-chromium plate hammer with body-mounted threads, which has the following beneficial effects:

[0015] 1. This more reliable high-chromium cast iron hammer with threaded body features an independent reinforced connecting seat inside the hammer body, with an internal threaded hole on it. This separates the brittle high-chromium cast iron with poor stress performance from the threaded connection part that needs to withstand complex stress. This allows the bolt preload and working impact force to be borne by the alloy steel connecting seat with higher toughness and strength, fundamentally eliminating the risk of failure such as tooth breakage and brittle fracture caused by directly tapping on high-chromium cast iron, and greatly improving the reliability and safety of installation.

[0016] 2. This more reliable high-chromium steel hammer with threaded body achieves optimized material performance through a reinforced composite layer design. This allows the hammer to possess both excellent impact toughness and extreme surface wear resistance, successfully resolving the contradiction of traditional high-chromium steel hammers being either wear-resistant but not tough, or tough but not wear-resistant. This significantly extends the service life while ensuring high reliability of equipment operation. It also addresses the issue that existing high-chromium steel hammers with threaded body do not fully utilize the wear resistance advantages of high-chromium cast iron materials, and the weak point of the threaded connection becomes a bottleneck restricting its overall performance. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a bottom-view perspective view of the present invention;

[0019] Figure 3 This is a schematic diagram of the reinforced composite layer of this utility model.

[0020] In the figure: 1. High-chromium hammer body; 2. Reinforced connecting seat; 3. Mounting hole; 4. Internal threaded hole; 5. Prefabricated groove; 6. Hard alloy block; 7. High-vanadium high-speed steel bar; 8. Reinforced composite layer; 801. High-toughness alloy steel substrate; 802. Mechanical interlocking bonding layer; 803. High-chromium cast iron working layer; 804. Hard alloy local reinforcement layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 A more reliable high-chromium plate hammer with threaded body in this embodiment includes a high-chromium plate hammer body 1. The upper surface of the high-chromium plate hammer body 1 is provided with a reinforcing installation structure that can improve its installation strength. The reinforcing installation structure includes a reinforcing connecting seat 2 disposed inside the high-chromium plate hammer body 1 and extending to its upper surface. The upper surface of the reinforcing connecting seat 2 is provided with an internal threaded hole 4. The upper surface of the high-chromium plate hammer body 1 is provided with an installation hole 3. The interior of the high-chromium plate hammer body 1 is provided with a prefabricated groove 5 that is adapted to the reinforcing connecting seat 2.

[0023] Specifically, the reinforced connecting seat 2 and the high-chromium plate hammer body 1 are metallurgically bonded by vacuum brazing. The axis of the internal threaded hole 4 is parallel to the axis of the mounting hole 3. The prefabricated groove 5 is inverted T-shaped. The contact surface between the reinforced connecting seat 2 and the prefabricated groove 5 is fixed by welding. There are two reinforced connecting seats 2, which are symmetrically distributed inside the high-chromium plate hammer body 1. The outer surface of the reinforced connecting seat 2 is provided with an anti-rust coating.

[0024] It should be noted that vacuum brazing ensures a high-strength metallurgical bond between the reinforced connecting seat 2 and the high-chromium hammer body 1, resulting in strong interfacial bonding and effective load transfer. The inverted T-shaped prefabricated groove 5 creates a powerful mechanical interlocking effect, effectively resisting the tendency of the connecting seat to be pulled out under impact conditions, further enhancing the reliability of the bond. The dual bonding mechanism ensures the integrity of the overall structure. The anti-rust coating on the surface of the reinforced connecting seat 2 solves the problem of easy corrosion of steel components, extending their service life. At the same time, the durable internal threaded hole 4 makes the disassembly and replacement of the hammer more convenient, reducing maintenance costs.

[0025] It should be noted that the reinforced connecting seat 2 is preferably made of alloy structural steel (such as 42CrMo). This material has excellent strength, toughness and fatigue resistance. Its toughness is much higher than that of high chromium cast iron, and it can perfectly withstand the task of bearing bolt preload and complex working impact.

[0026] Please see Figure 2 and Figure 3 In this embodiment, a cemented carbide block 6 is embedded at the bottom of the high-chromium hammer body 1. A high-vanadium high-speed steel strip 7 is fixedly connected to the side of the high-chromium hammer body 1 near the cemented carbide block 6. A reinforcing composite layer 8 is provided on the side of the high-chromium hammer body 1 near the cemented carbide block 6. The reinforcing composite layer 8 is composed of a high-toughness alloy steel substrate 801, a mechanical interlocking bonding layer 802, a high-chromium cast iron working layer 803, and a cemented carbide local reinforcement layer 804.

[0027] Specifically, a high-toughness alloy steel substrate 801 is disposed on the lower surface of the high-chromium hammer body 1, a mechanical interlocking bonding layer 802 is disposed between the high-toughness alloy steel substrate 801 and the high-chromium cast iron working layer 803, and a cemented carbide local strengthening layer 804 is disposed on the outer surfaces of the cemented carbide block 6 and the high-vanadium high-speed steel strip 7, respectively.

[0028] It should be noted that the mechanical interlocking layer 802 achieves a firm mechanical lock between two metals with vastly different properties through pre-designed dovetail-shaped, wavy, and other uneven interfaces. The high-toughness alloy steel substrate 801 is the foundation, responsible for absorbing and buffering the enormous energy from material impacts, ensuring that the hammer plate does not break. The high-chromium cast iron working layer 803 is the main wear-resistant layer, providing high hardness and wear resistance over a wide area.

[0029] It should be noted that the mechanically interlocked bonding layer 802 is the key to achieving a balance between rigidity and flexibility. Through mechanical interlocking, it firmly bonds the high-toughness alloy steel substrate 801 with the high-chromium cast iron working layer 803 and the hard alloy block 6, effectively alleviating the internal stress caused by the mismatch between the coefficient of thermal expansion and the modulus of elasticity, and preventing the wear-resistant layer from falling off under impact.

[0030] The working principle of the above embodiments is as follows:

[0031] The bolts pass through the mounting holes 3 on the rotor hammer disc and the hammer plate in sequence, and finally screw into the internal threaded hole 4 of the reinforced connecting seat 2 and tighten them. Since the internal threaded hole 4 is opened in the tough alloy structural steel connecting seat, the huge bolt preload and the continuous impact vibration load during operation are effectively borne and distributed by the reinforced connecting seat 2. The inverted T-shaped mechanical interlock and the metallurgical combination of vacuum brazing work together to ensure the perfect combination of the reinforced connecting seat 2 and the high chromium hammer plate body 1, thereby completely solving the problem of easy cracking of high chromium cast iron threads and achieving the ultimate reliability of installation.

[0032] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0033] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" 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.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A more reliable high-chromium plate hammer with body thread, comprising a high-chromium plate hammer body (1), characterized in that: The upper surface of the high-chromium hammer body (1) is provided with a reinforcing installation structure that can improve its installation strength; The reinforcement installation structure includes a reinforcing connecting seat (2) disposed inside the high-chromium plate hammer body (1) and extending to its upper surface. The upper surface of the reinforcing connecting seat (2) is provided with an internal threaded hole (4). The upper surface of the high-chromium plate hammer body (1) is provided with an installation hole (3). The interior of the high-chromium plate hammer body (1) is provided with a prefabricated groove (5) that is adapted to the reinforcing connecting seat (2).

2. A more reliable high-chromium plate hammer with body thread according to claim 1, characterized in that: The reinforced connecting seat (2) and the high-chromium plate hammer body (1) are bonded together by vacuum brazing, and the axis of the internal thread hole (4) is parallel to the axis of the mounting hole (3).

3. A more reliable high-chromium plate hammer with body thread according to claim 1, characterized in that: The prefabricated groove (5) is inverted T-shaped, and the contact surface between the reinforced connecting seat (2) and the prefabricated groove (5) is fixed by welding.

4. A more reliable high-chromium plate hammer with body thread according to claim 1, characterized in that: The number of the reinforced connecting seats (2) is two, and the two reinforced connecting seats (2) are symmetrically distributed inside the high-chromium plate hammer body (1). The outer surface of the reinforced connecting seats (2) is provided with an anti-rust coating.

5. A more reliable high-chromium plate hammer with body thread according to claim 1, characterized in that: The bottom of the high-chromium hammer body (1) is fitted with a cemented carbide block (6), and a high-vanadium high-speed steel bar (7) is fixedly connected to the side of the high-chromium hammer body (1) near the cemented carbide block (6).

6. A more reliable high-chromium plate hammer with body thread according to claim 5, characterized in that: The high-chromium hammer body (1) has a reinforcing composite layer (8) on the side near the cemented carbide block (6). The reinforcing composite layer (8) is composed of a high-toughness alloy steel substrate (801), a mechanical interlocking bonding layer (802), a high-chromium cast iron working layer (803), and a cemented carbide local reinforcement layer (804).

7. A more reliable body-threaded high-chromium plate hammer according to claim 6, characterized in that: The high-toughness alloy steel substrate (801) is disposed on the lower surface of the high-chromium plate hammer body (1), the mechanical interlocking bonding layer (802) is disposed between the high-toughness alloy steel substrate (801) and the high-chromium cast iron working layer (803), and the cemented carbide local reinforcement layer (804) is disposed on the outer surface of the cemented carbide block (6) and the high-vanadium high-speed steel strip (7).

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