Detachable hard alloy plate hammer for impact crusher
The detachable design of the carbide hammer plate solves the problems of complex integral casting and long replacement time in the existing technology, achieving efficient replacement and improved wear resistance, and is suitable for high-strength hard rock crushing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-24
AI Technical Summary
The existing impact crusher uses a complex integral casting process for the high-chromium cast iron hammer, resulting in high material costs. Replacing the hammer requires a long downtime, and non-working parts wear out simultaneously with working parts, leading to low material utilization. Furthermore, the hardness and wear resistance of high-chromium cast iron cannot meet the requirements for crushing high-strength hard rock.
It adopts a detachable design. The base is made of ordinary steel. The carbide hammer plate is connected to the steel body through a brazing layer and fixed with bolts. The carbide material is WC-Co with a hardness of HRA≥89. The brazing layer is a copper-based alloy. The connecting rod is welded to the base with copper-based brazing filler metal, which can achieve quick replacement and high wear resistance.
It improves material utilization, reduces material costs, extends the service life of the hammer, and enhances wear resistance and impact resistance, making it suitable for crushing high-strength hard rock.
Smart Images
Figure CN224025157U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of mine machinery, and concretely relates to a detachable hard alloy plate hammer for impact crusher. BACKGROUND
[0002] The impact crusher is an important equipment widely used in the mining, building material, metallurgy and other industries, and the core crushing component plate hammer bears severe wear under high-speed impact working condition, the main role of the plate hammer is to impact and crush the material entering the crushing cavity, thereby realizing the crushing function, however, the existing plate hammer usually has the following problems.
[0003] The high-chromium cast iron integral casting process is complex, the material cost is high, the plate hammer integral replacement needs long downtime, the production efficiency is affected, the non-working parts (such as base) and working parts are synchronously worn, the material utilization rate is low, and the hardness and wear resistance of high-chromium cast iron still cannot meet the high-strength hard rock crushing demand.
[0004] Therefore, we improve it and propose a detachable hard alloy plate hammer for impact crusher. CONTENT OF THE UTILITY MODEL
[0005] The utility model aims at: aiming at the problems of the detachable hard alloy plate hammer for impact crusher that the high-chromium cast iron integral casting process is complex, the material cost is high, the plate hammer integral replacement needs long downtime, the production efficiency is affected, the non-working parts (such as base) and working parts are synchronously worn, the material utilization rate is low, and the hardness and wear resistance of high-chromium cast iron still cannot meet the high-strength hard rock crushing demand.
[0006] In order to realize the above-mentioned utility model purposes, the utility model provides the following technical scheme:
[0007] The detachable hard alloy plate hammer for impact crusher is used to improve the above-mentioned problems.
[0008] The utility model is as follows:
[0009] The utility model discloses a base is provided with steel body on the top, is provided with the cutter groove on the lateral wall of steel body, is provided with hard alloy and connecting rod on the top of steel body, is provided with the brazing layer at the connecting place of hard alloy and base and the connecting place of connecting rod and the top of base, is provided with three first mounting holes on the top of steel body, is provided with bolt in the first mounting hole, the base is made of ordinary steel material.
[0010] As the preferred technical scheme of the utility model, the component of hard alloy and connecting rod is all WC-Co, and the hardness HRA is greater than or equal to 89.
[0011] The brazing layer is copper-based alloy, and the thickness is 0.5-1.2 mm.
[0012] As the preferred technical scheme of the utility model, the top of the base is provided with positioning grooves at both ends, the bottom of the steel body is fixedly connected with positioning blocks, and the positioning blocks are slidably connected with the positioning grooves.
[0013] As the preferred technical scheme of the utility model, the bolt is made of high-strength corrosion-resistant alloy steel.
[0014] As the preferred technical scheme of the utility model, two second mounting holes are formed in the side wall of the steel body and located between the two adjacent first mounting holes.
[0015] As the preferred technical scheme of the utility model, the number of the hard alloys is four, and the hard alloys are evenly distributed along the length direction of the base.
[0016] Compared with the prior art, the utility model has the beneficial effects that:
[0017] In the scheme of the utility model,
[0018] 1. The steel body, the knife groove, the hard alloy, the connecting rod, the brazing layer, the first mounting hole and the bolt are arranged, the hard alloy only covers the impact surface of the base in use, the material utilization rate is improved, ordinary steel is used in the non-working area, the material cost is reduced, the steel body is fixed on the base through the bolt, the steel body supports rapid disassembly and replacement, the whole plate hammer does not need to be replaced, the hard alloy is connected with the steel body through the copper-based brazing material, and the combination strength and the impact resistance are ensured.
[0019] 2. The hard alloy and the connecting rod are arranged, the hard alloy has WC-Co composition and hardness HRA≥89, and the hard alloy hardness and wear resistance are significantly higher than those of the original whole plate hammer made of high-chromium cast iron material, and the service life is improved by 2-3 times. DRAWINGS
[0020] Figure 1 The utility model provides a hard alloy plate hammer for a detachable impact crusher, and a structure schematic view of the hard alloy plate hammer is shown in the figure.
[0021] Figure 2 The utility model provides a hard alloy plate hammer for a detachable impact crusher, and a left view of the hard alloy plate hammer is shown in the figure.
[0022] Figure 3 The utility model provides a hard alloy plate hammer for a detachable impact crusher Figure 2 A sectional view of the hard alloy plate hammer for the detachable impact crusher is shown in the figure.
[0023] Figure 4The utility model provides a detachable hard alloy plate hammer cutter slot for counterattack crusher's structure diagram.
[0024] Figure 5 The utility model provides a detachable hard alloy plate hammer second mounting hole for counterattack crusher's structure diagram.
[0025] Figure 6 The utility model provides a detachable hard alloy plate hammer for counterattack crusher Figure 3 The enlarged view of A in the middle.
[0026] Indicated in the drawing:
[0027] 1, base, 2, steel body, 3, cutter slot, 4, hard alloy, 5, connecting rod, 6, first mounting hole, 7, bolt, 8, positioning groove, 9, positioning block, 10, second mounting hole. Specific embodiments
[0028] In order to make the utility model embodiment's purpose, technical scheme and advantage more clear, below, will combine the drawing, to the technical scheme in the utility model embodiment, clear, complete description. Obviously, the described embodiment is the part embodiment of the utility model, rather than all the embodiments.
[0029] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the utility model.
[0030] It should be noted that, in the case of no conflict, the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other.
[0031] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0032] As Figures 1-6As shown, the present embodiment proposes a detachable hard alloy plate hammer for impact crusher, which comprises a base 1, a steel body 2 arranged above the base 1, a cutter groove 3 arranged on the side wall of the steel body 2, a hard alloy 4 and a connecting rod 5 arranged above the steel body 2, a brazing layer arranged at the connecting position of the hard alloy 4 and the base 1 and at the connecting position of the connecting rod 5 and the top of the base 1, three first mounting holes 6 arranged at the top of the steel body 2, a bolt 7 arranged in the first mounting hole 6, the base 1 is made of ordinary steel, one end of the bolt 7 penetrates into the inside of the base 1 and is threadedly connected with the base 1, the base 1 is made of No. 45 steel, the hard alloy 4 is processed into the shape suitable for the impact surface, the bolt 7 is screwed into the first mounting hole 6 and the inside of the base 1, the torque value is set to 50-60 N·m, the connecting rod 5 is welded in the cutter groove 3 in a protective atmosphere furnace by using copper-based filler metal, the bottom of the connecting rod 5 is welded with the top of the base 1, and then the hard alloy 4 is welded on the top of the connecting rod 5, thereby completing the welding of the steel body 2 and the hard alloy 4.
[0033] As shown in the Figure 1 hard alloy 4 and the connecting rod 5 are both composed of WC-Co, and the hardness HRA is greater than or equal to 89. WC-Co has high hardness, wear resistance, red hardness and toughness, and is not easy to be damaged during long-time work, and the hardness HRA is greater than or equal to 89, which is higher than that of the original high chromium cast iron material of the whole plate hammer, and the service life is increased by 2-3 times.
[0034] As shown in the Figure 1 the brazing layer is copper-based alloy, and the thickness is 0.5-1.2 mm. Copper-based alloy has good wetting ability for most metals such as steel, nickel and hard alloy 4, liquid filler metal is easy to spread on the surface of the base material, forming a uniform and dense weld, reducing the risk of cracking.
[0035] As shown in the Figure 6 both ends of the top of the base 1 are provided with positioning grooves 8, both ends of the bottom of the steel body 2 are fixedly connected with positioning blocks 9, and the positioning blocks 9 are slidably connected with the positioning grooves 8. The positioning grooves 8 and the positioning blocks 9 can ensure the accuracy of installing the steel body 2.
[0036] As shown in the Figure 3 the bolt 7 is made of high-strength corrosion-resistant alloy steel. The tensile strength of the high-strength corrosion-resistant alloy steel bolt 7 is usually greater than or equal to 800 MPa, which can withstand large load and avoid the device from breaking during work.
[0037] As shown in the Figure 5 two second mounting holes 10 are arranged on the side wall of the steel body 2, and the second mounting holes 10 are located between the adjacent two first mounting holes 6. By screwing the bolt 7 into the second mounting hole 10 and the base 1, the fixing effect of the steel body 2 can be improved again.
[0038] AsFigure 1 As shown, the number of hard alloy 4 is four, and evenly distributed along the length direction of the base 1. Four hard alloy 4 is connected with steel body 2 through the brazing layer, and multiple hard alloy 4 disperses the impact force to multiple welding points, avoiding brittle fracture caused by single point overload.
[0039] Specifically, the detachable hard alloy plate hammer for impact crusher in use: the bolt 7 is screwed into the first mounting hole 6, the second mounting hole 10 and the inside of the base 1, and the torque value is set to 50-60N·m, the copper-based filler is used to weld the connecting rod 5 in the inside of the knife groove 3 in the protective atmosphere furnace, and the bottom of the connecting rod 5 is welded with the top of the base 1, then the hard alloy 4 is welded on the top of the connecting rod 5, the welding of the steel body 2 and the hard alloy 4 is completed, the steel body 2 fixes the hard alloy 4 through the brazing process, and the quick replacement is realized by the bolt 7 connection, the structure significantly improves the wear resistance and service life, reduces the maintenance cost, and is suitable for high-strength hard rock crushing operation.
[0040] All the technical features in the embodiment can be freely combined according to actual needs.
[0041] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.
Claims
1. A detachable impact crusher cemented carbide hammer, comprising a base (1), characterized in that, A steel body (2) is provided above the base (1). A knife groove (3) is provided on the side wall of the steel body (2). A cemented carbide (4) and a connecting rod (5) are provided above the steel body (2). A brazing layer is provided at the connection between the cemented carbide (4) and the base (1) and at the connection between the connecting rod (5) and the top of the base (1). Three first mounting holes (6) are provided on the top of the steel body (2). Bolts (7) are provided inside the first mounting holes (6). The base (1) is made of ordinary steel.
2. The carbide hammer plate for a detachable impact crusher according to claim 1, characterized in that, The cemented carbide (4) and the connecting rod (5) are both composed of WC-Co and have a hardness HRA≥89.
3. The detachable impact crusher cemented carbide hammer according to claim 1, characterized in that, The brazing layer is a copper-based alloy with a thickness of 0.5-1.2 mm.
4. The detachable impact crusher cemented carbide hammer according to claim 1, characterized in that, The base (1) has positioning grooves (8) at both ends of the top, and the steel body (2) has positioning blocks (9) fixedly connected at both ends of the bottom. The positioning blocks (9) are slidably connected to the positioning grooves (8).
5. A detachable carbide hammer for an impact crusher according to claim 1, characterized in that, The bolt (7) is made of high-strength corrosion-resistant alloy steel.
6. The detachable impact crusher cemented carbide hammer according to claim 1, characterized in that, Two second mounting holes (10) are provided on the side wall of the steel body (2), and the second mounting holes (10) are located between two adjacent first mounting holes (6).
7. A detachable carbide hammer for an impact crusher according to claim 1, characterized in that, The number of the cemented carbide (4) is four, and they are evenly distributed along the length of the base (1).