Split type high-strength wear-resistant hammer head

Abstract

The utility model discloses a split type high-strength wear -resisting hammer head, including the hammer body and the wear -resisting hammer cover of adaptation hammer head part, and hammer handle part is equipped with connecting hole, and hammer head part is provided with connecting groove, and the connecting plate inside wear -resisting hammer cover is with connecting groove interference fit, and the wedge block on connecting plate is inserted into the hammer body through slot, and realizes double locking with the lock bar and locking mechanism in cooperation strip-shaped through -hole, and the wear -resisting hammer cover convenient dismounting is realized through the unlocking pull rod, push rod and screw rod of unlocking mechanism, the utility model discloses need not to disassemble hammer body can replace wearing part fast, and the maintenance time is greatly shortened, and the operation and maintenance cost is reduced, and wear -resisting performance and impact stability of hammer head are improved simultaneously, and are suitable for crushing operation in the field such as mine, building material etc.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a split-type high-strength wear-resistant hammerhead. Background Technology

[0002] Hammer crushers are core equipment for crushing hard strata materials (such as ores and granite) in mining, building materials, metallurgy and other fields. Their crushing function relies on the impact and collision of the material by the high-speed rotation of the hammer.

[0003] Currently, mainstream hammerheads adopt an integral structure, and the materials are mostly high-manganese steel or wear-resistant alloys. Although these can meet basic wear resistance requirements, after long-term impact on hard materials, the impact parts of the hammerhead are prone to severe wear, requiring regular repair or replacement. If the integral hammerhead is repaired by welding, the entire hammerhead needs to be disassembled from the equipment, and the repair time is usually 2-3 days, resulting in long-term equipment downtime. If the integral hammerhead is directly replaced, not only is the material cost high, but the replacement process is also cumbersome, significantly increasing the company's operation and maintenance costs. Therefore, solving the problems of long repair time and high cost of integral hammerheads has become an urgent breakthrough in the hammer crusher field. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a split-type high-strength wear-resistant hammerhead to solve the problems mentioned in the background art.

[0005] To achieve the above technical objectives, the present invention provides a split-type high-strength wear-resistant hammer head, comprising a hammer body, a connecting hole provided in the hammer handle of the hammer body, a wear-resistant hammer sleeve adapted to the hammer head, two symmetrical connecting plates fixedly arranged inside the wear-resistant hammer sleeve, a wedge block provided on the side of the two connecting plates facing away from each other, a connecting groove adapted to the connecting plates provided in the hammer head of the hammer body, a through groove adapted to the wedge block provided on the side wall of the connecting groove, a strip-shaped through hole perpendicular to the two connecting grooves on the side facing away from each other, one end of the strip-shaped through hole penetrating the through groove, and a locking rod slidably arranged inside it, and a locking mechanism and an unlocking mechanism adapted to the locking rod provided inside the hammer head of the hammer body.

[0006] Furthermore, the hammer head of the hammer body is provided with a locking hole perpendicular to the connecting groove. The locking hole communicates with the strip-shaped through hole. The locking mechanism includes a push pin and a closing bolt disposed in the locking hole. The push pin abuts against the locking rod. The closing bolt is threaded into the inner wall of the locking hole. A locking spring is provided between the push pin and the closing bolt to maintain a compressed state.

[0007] Furthermore, the unlocking mechanism includes an unlocking pull rod and an unlocking push rod. The hammer head of the hammer body is provided with a vertically intersecting unlocking flat hole and an unlocking vertical hole. The unlocking flat hole is parallel to the locking hole and communicates with the strip-shaped through hole. The unlocking pull rod is slidably disposed in the unlocking flat hole, and one end of it is connected to the locking rod. The unlocking vertical hole is disposed along the length direction of the hammer body and penetrates through its hammer head. The unlocking push rod is disposed in the unlocking vertical hole, and an unlocking screw that is threadedly engaged with the unlocking vertical hole is disposed above it. The unlocking push rod is provided with an unlocking sliding hole, and an unlocking wedge is disposed on the inner wall of the unlocking sliding hole. The unlocking pull rod is provided with an inclined groove that engages with the unlocking wedge.

[0008] Furthermore, the connecting plate and the connecting groove are fitted with an interference fit, and the length of the locking rod is less than the depth of the strip-shaped through hole.

[0009] Furthermore, the outer wall of the wear-resistant hammer sleeve is overlaid with a wear-resistant layer.

[0010] Compared with the prior art, the beneficial effects of this utility model include: 1. This utility model adopts a split structure design, which only requires the targeted replacement of the wear-resistant hammer sleeve after wear, and maintenance can be completed without disassembling the entire hammer body. This completely solves the problem of traditional integral hammer head repair requiring overall disassembly and long construction period, greatly shortens equipment downtime, avoids the high material cost loss caused by overall replacement, and significantly reduces the company's operation and maintenance costs.

[0011] 2. This utility model uses a special wear-resistant layer welded onto the outer wall of the wear-resistant hammer sleeve, combined with a double fixing structure of interference fit and spring locking, which not only improves the wear resistance of the hammer head to extend its service life, but also ensures a stable connection without relative displacement under impact conditions; the unlocking mechanism takes into account both convenience and stability, effectively solving the industry pain point that traditional hammer head wear resistance and maintenance convenience are difficult to balance, and improving the continuous operation efficiency of the hammer crusher. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a split-type high-strength wear-resistant hammer provided by this utility model; Figure 2 This is a schematic diagram of a wear-resistant hammer sleeve for a split-type high-strength wear-resistant hammer provided by this utility model; Figure 3 This is a schematic diagram of the hammer body of a split-type high-strength wear-resistant hammer provided by this utility model; Figure 4 This is a perspective view of a split-type high-strength wear-resistant hammer provided by this utility model. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] Reference Figure 1 This utility model provides a split high-strength wear-resistant hammer head, including a hammer body 1 and a wear-resistant hammer sleeve 2; the wear-resistant hammer sleeve 2 is adapted to the hammer head contour of the hammer body 1, and the outer wall is overlaid with a wear-resistant layer with a thickness of 3-5mm.

[0015] Reference Figure 3 The hammer handle of the hammer body 1 is provided with a connecting hole 101 for detachable connection with the rotor shaft of the hammer crusher; the hammer head of the hammer body 1 is provided with two symmetrical connecting grooves 102. The cross-sectional shape of the connecting groove 102 is perfectly matched with the connecting plate 201 fixedly installed inside the wear-resistant hammer sleeve 2, and the connecting plate 201 and the connecting groove 102 are interference fit.

[0016] Reference Figure 2 On the opposite sides of the two connecting plates 201, wedges 202 are integrally formed. The wedges 202 have a right-angled trapezoidal structure, with their inclined surfaces facing the installation direction of the wear-resistant hammer sleeve 2. Correspondingly, a through groove 117 adapted to the wedges 202 is provided on the side wall of the connecting groove 102 of the hammer body 1. When the connecting plate 201 is fully pressed into the connecting groove 102, the wedges 202 are precisely inserted into the through groove 117. On the opposite side of the two connecting grooves 102, a strip-shaped through hole 103 perpendicular to it is provided. The axis of the strip-shaped through hole 103 intersects perpendicularly with the axis of the through groove 117, and the strip-shaped through hole... One end of 103 passes through the through groove 117, and a locking rod 104 is slidably fitted inside the strip-shaped through hole 103. During the process of inserting the connecting plate 201 into the connecting groove 102, the locking rod 104 slides away from the connecting groove 102 in the strip-shaped through hole 103 through the inclined surface of the wedge block 202, and resets after the wedge block 202 passes the strip-shaped through hole 103. The locking rod 104 is locked under the wedge block 202 and held in place, realizing the secondary locking of the wear-resistant hammer sleeve 2. In actual application, the length of the locking rod 104 is less than the depth of the strip-shaped through hole 103 to avoid deformation of the wear-resistant hammer sleeve 2 during operation and jamming it.

[0017] Reference Figure 3 , Figure 4To implement the above process, the hammer head of the hammer body 1 is provided with a locking hole 105 perpendicular to the connecting groove 102. The locking hole 105 communicates with the strip-shaped through hole 103 and is located at the end of the strip-shaped through hole 103 away from the through groove 117. A push pin 106 and a sealing bolt 107 are installed in the locking hole 105. The push pin 106 is slidably disposed in the locking hole 105, and one end of it abuts against the cylindrical surface of the locking rod 104. The sealing bolt 107 is engaged with the inner wall of the locking hole 105 through a fine thread to achieve a seal on the locking hole 105. A locking spring 108 is installed between the push pin 106 and the sealing bolt 107 and is always kept in a compressed state. The elastic thrust of the locking spring 108 pushes the push pin 106, so that the locking rod 104 is kept below the wedge block 202, ensuring the reliability of the lock.

[0018] To facilitate the easy disassembly of the wear-resistant hammer sleeve 2, the hammer head of the hammer body 1 is also equipped with an unlocking mechanism, including an unlocking pull rod 112 and an unlocking push rod 111. The hammer head of the hammer body 1 has vertically intersecting unlocking flat holes 109 and unlocking vertical holes 110. The unlocking flat hole 109 is parallel to the locking hole 105, and one end is connected to the strip-shaped through hole 103. The unlocking pull rod 112 is slidably fitted into the unlocking flat hole 109, and its end near the locking rod 104 is threadedly connected to the locking rod 104, which can drive the locking rod 104 to slide along the strip-shaped through hole 103. The unlocking vertical hole 110 is opened along the length of the hammer body 1 and penetrates the hammer head of the hammer body 1. The unlocking push rod 111 is slidably fitted into the unlocking vertical hole 110. An unlocking screw 114 is located above the unlocking push rod 111. The unlocking screw 114 is threadedly engaged with the inner wall of the unlocking vertical hole 110, allowing rotation... The unlocking screw 114 can drive the unlocking push rod 111 to move downward along the unlocking vertical hole 110; the unlocking push rod 111 has a horizontal unlocking sliding hole 113, and the inner wall of the unlocking sliding hole 113 is integrally formed with an unlocking wedge 115. The unlocking pull rod 112 has a groove 116 adapted to the unlocking wedge 115. The inclination angle of the unlocking wedge 115 is the same as the inclination angle of the groove 116 (both are 30-45°). When the unlocking push rod 111 moves downward, the unlocking wedge 115 slides along the groove 116, and pushes the unlocking pull rod 112 to move laterally through the inclined surface force, thereby driving the locking rod 104 to disengage from the wedge 202 and realize unlocking; the unlocking screw 114 is set on the side adjacent to the hammer handle of the hammer body 1, which can effectively reduce the impact of the equipment during operation (the working surface of the breaker hammer on this side), and reduce the risk of jamming and failure to unlock normally.

[0019] For ease of assembly, in practical applications, the lower end width of the unlocking sliding hole 113 is greater than or equal to the diameter of the unlocking lever 112, and the setting of the unlocking wedge 115 can ensure that the unlocking lever 112 can rotate freely in the unlocking sliding hole 113. At the same time, a slot can be set on the free end of the unlocking lever 112 for easy installation with a screwdriver.

[0020] To facilitate understanding of this utility model, the following is combined with... Figure 1 - Figure 4 The assembly process of this solution is described in detail: First, insert the locking rod 104 and the unlocking push rod 111 into the strip-shaped through hole 103 and the unlocking vertical hole 110 respectively. Then, install the unlocking pull rod 112 into the unlocking flat hole 109, pass it through the lower end of the unlocking sliding hole 113, and connect and fix it to the locking rod 104. Next, install the push column 106 and the locking spring 108 into the locking hole 105 in sequence. Tighten the sealing bolt 107 to make the push column 106 abut against the locking rod 104. Under the action of the spring, the push column 106 pushes the locking rod 104 to stay at the end adjacent to the unlocking sliding hole 113 and the connecting groove 102. Finally, press the connecting plate 201 of the wear-resistant hammer sleeve 2 into the connecting groove 102 of the hammer body 1. The wedge block 202 squeezes the locking rod 104 and compresses the locking spring 108. When the connecting plate 201 is fully in place, the locking rod 104 resets under the action of the spring and clamps the wedge block 202, completing the overall assembly.

[0021] During disassembly and replacement, simply rotate the unlocking screw 114 to drive the unlocking push rod 111 downwards. The unlocking wedge 115, in conjunction with the inclined groove 116, pushes the unlocking pull rod 112, causing the locking rod 104 to disengage from the wedge 202, thus removing the worn wear-resistant hammer sleeve 2 from the hammer body 1. In practical applications, the wear-resistant hammer sleeve 2 often deforms, making it difficult to remove. In this case, continuously rotate the unlocking screw 114 to push the lower end of the unlocking push rod 111 out of the hammer body 1, pushing the wear-resistant hammer sleeve 2 away from the hammer body 1 to assist in disassembling the wear-resistant hammer sleeve 2. To achieve the above function, refer to... Figure 3 The inclined groove 116 is set as a right trapezoid. After the locking rod 104 is disengaged from the wedge block 202, the unlocking push rod 111 can continue to descend along the unlocking slide hole 113 through the vertical section of the inclined groove 116. After the wear-resistant hammer sleeve 2 is removed, the unlocking push rod 111 can be manually reset.

[0022] After replacing the new wear-resistant hammer sleeve 2, the assembly can be completed by reversing the operation. The entire maintenance process does not require disassembling the hammer body 1 and can be completed in just 15-30 minutes, which greatly shortens downtime and reduces maintenance costs.

[0023] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A split-type high-strength wear-resistant hammerhead, comprising a hammer body (1), wherein the hammer handle portion of the hammer body (1) is provided with a connecting hole (101), and the hammer head is provided with a wear-resistant hammer sleeve (2) adapted thereto, characterized in that: The wear-resistant hammer sleeve (2) is fixedly provided with two symmetrical connecting plates (201). A wedge (202) is provided on the side of the two connecting plates (201) that are far apart. The hammer head of the hammer body (1) is provided with a connecting groove (102) that is adapted to the connecting plate (201). A through groove (117) adapted to the wedge (202) is provided on the side wall of the connecting groove (102). A strip-shaped through hole (103) perpendicular to the two connecting grooves (102) is provided on the side that is far apart. One end of the strip-shaped through hole (103) passes through the through groove (117) and a locking rod (104) is slidably provided in it. A locking mechanism and an unlocking mechanism adapted to the locking rod (104) are provided in the hammer head of the hammer body (1).

2. The split-type high-strength wear-resistant hammerhead according to claim 1, characterized in that: The hammer head of the hammer body (1) is provided with a locking hole (105) perpendicular to the connecting groove (102). The locking hole (105) communicates with the strip-shaped through hole (103). The locking mechanism includes a push pin (106) and a closing bolt (107) disposed in the locking hole (105). The push pin (106) abuts against the locking rod (104). The closing bolt (107) is threadedly engaged with the inner wall of the locking hole (105). A locking spring (108) is provided between the push pin (106) and the closing bolt (107) to maintain a compressed state.

3. A split-type high-strength wear-resistant hammerhead according to claim 2, characterized in that: The unlocking mechanism includes an unlocking pull rod (112) and an unlocking push rod (111). The hammer head of the hammer body (1) is provided with a vertically intersecting unlocking flat hole (109) and an unlocking vertical hole (110). The unlocking flat hole (109) is parallel to the locking hole (105) and communicates with the strip-shaped through hole (103). The unlocking pull rod (112) is slidably disposed in the unlocking flat hole (109), and one end of it is connected to the locking rod (104). The unlocking vertical hole (110) extends along the hammer body. (1) is set along its length and extends through its hammer head. The unlocking push rod (111) is set inside the unlocking vertical hole (110). An unlocking screw (114) is set above it and is threadedly engaged with the unlocking vertical hole (110). An unlocking sliding hole (113) is set on the unlocking push rod (111). An unlocking wedge (115) is set on the inner wall of the unlocking sliding hole (113). An inclined groove (116) is set on the unlocking pull rod (112) and is engaged with the unlocking wedge (115).

4. A split-type high-strength wear-resistant hammerhead according to claim 2 or 3, characterized in that: The connecting plate (201) and the connecting groove (102) are fitted with an interference fit, and the length of the locking rod (104) is less than the depth of the strip-shaped through hole (103).

5. A split-type high-strength wear-resistant hammerhead according to claim 4, characterized in that: The outer wall of the wear-resistant hammer sleeve (2) is welded with a wear-resistant layer.

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