Split hammer head structure

Abstract

This utility model relates to the field of crusher technology, and in particular to a split hammer structure, including a crusher for crushing materials. The crusher includes: a main body assembly, including a shell for containing materials; a rotor assembly, including a main shaft rotatably mounted on the left and right sides inside the shell, a hammer disc fixed to the outer wall of the main shaft, and a plurality of circumferentially arranged hammer shafts inserted and installed inside the hammer disc; and a crushing assembly, including a plurality of hammer seats sleeved on the hammer shafts, an mounting head fixed to the outer end of the hammer seat, a pin hole opened inside the mounting head, a hammer head mounted on the mounting head, an mounting opening opened inside the hammer head and cooperating with the mounting head, a pin opening opened inside the hammer head, and a pin rod inserted through the pin hole on the mounting head and the pin opening on the hammer head, with a cotter pin installed at the end of the pin rod. The modular structure supports quick assembly and disassembly and component reuse, reducing maintenance complexity, spare parts costs, and equipment downtime.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically a split hammer structure. Background Technology

[0002] As a key piece of equipment in material crushing operations, the hammer structure of the hammer crusher directly affects crushing efficiency and operating costs. In industries such as mining, cement, metallurgy, and construction waste treatment, crushers often need to process high-hardness and highly abrasive materials, which places higher demands on the wear resistance, impact resistance, and ease of maintenance of the hammers. According to CN221062939U, a split-type crusher hammerhead is disclosed. This technology discloses a technical solution including "a connecting hammer handle, a hammer handle reinforcing unit, and a hammerhead connecting unit. The hammer handle is connected to the lower side of the hammer handle via the hammer handle reinforcing unit. The connecting hammer handle has a connecting round hole on its front surface, which penetrates the front and rear sides of the connecting hammer handle. The hammerhead connecting unit includes a connecting plate, a fixing snap hole, a fixing bolt, a limiting snap groove, a connecting cylinder, a rectangular snap block, and a snap hole. The connecting hammerhead has a fixing snap hole on its upper surface, in which the connecting plate is fixedly snapped. The four corners of the connecting plate are fixedly connected to the corresponding connecting hammerheads via fixing bolts. The crusher hammerhead can be disassembled and replaced, making it more convenient to replace different hammerheads or hammer handles without affecting use. The hammer handle is reinforced to improve the service life of the hammerhead." The hammer head and hammer handle in the above solution use a complex multi-part locking method, which means that the entire hammer head assembly must be scrapped and replaced after a single part wears out. In addition, the replacement process requires disassembling a large number of related parts and making tedious adjustments, making the maintenance process complicated and time-consuming, which seriously affects the convenience and economy of equipment maintenance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a split hammerhead structure that supports rapid assembly and disassembly and component reuse through modular structure, thereby reducing maintenance complexity, spare parts costs, and equipment downtime.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a split-type hammerhead structure, including a crusher and used for material crushing, wherein the crusher includes: The main component includes a housing for containing materials; The rotor assembly includes a main shaft rotatably mounted on the left and right sides inside the housing, a hammer disc fixed to the outer wall of the main shaft, and several hammer shafts arranged in a circle inserted inside the hammer disc. The crushing assembly includes several hammer seats mounted on a hammer shaft. An installation head is fixed to the outer end of each hammer seat. A pin hole is opened inside the installation head. A hammer head is mounted on the installation head. An installation opening is opened inside the hammer head and mates with the installation head. A pin opening is opened inside the hammer head. A pin rod is inserted through the pin hole on the installation head and the pin opening on the hammer head. A cotter pin is installed at the end of the pin rod.

[0005] Preferably, the crushing assembly further includes circular grooves formed at both ends of the pin outlet for accommodating the bent portion of the cotter pin.

[0006] Preferably, the rotor assembly further includes threaded heads fixed at both ends of the hammer shaft, with washers fitted on the threaded heads and nuts threaded onto them.

[0007] Preferably, the main component further includes disassembly ports on the left and right sides at the front and rear ends of the housing, and flange covers are installed on the disassembly ports.

[0008] Preferably, the hammer head is made of high-chromium cast iron, and the hammer base and mounting head are made of alloy structural steel.

[0009] Preferably, the hammer head is symmetrical about the geometric center plane of its mounting port, so that the hammer head can be rotated 180° and then remounted on the mounting head.

[0010] Beneficial effects This utility model provides a split hammerhead structure. Compared with the prior art, it has the following advantages: 1. The hammer base serves as a basic support, mounted on the hammer shaft. The outer end of the mounting head mates with the mounting opening of the hammer head, bearing and transmitting the main impact torque. Furthermore, the pin passes through the pin hole of the mounting head and the pin opening of the hammer head, bearing the main shear force and preventing radial movement. A cotter pin is inserted into the end of the pin to form an axial limit. This design separates the hammer head as a wear-resistant component from the hammer base and mounting head as structural components. The pin-type connection structure is simple, requiring no complex tools for assembly and disassembly, thus improving the convenience of on-site maintenance.

[0011] 2. After the pin is installed in place, pass the cotter pin through the hole at its end and bend it. At this time, the bent part of the cotter pin is completely contained inside the groove, preventing the bent part of the cotter pin from protruding from the outer surface of the hammer head. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main components in this utility model; Figure 3 This is an exploded view of the rotor assembly in this utility model; Figure 4This is an exploded view of the crushing component in this utility model.

[0013] In the diagram: 1. Crusher; 11. Main assembly; 111. Shell; 112. Disassembly port; 113. Flange cover; 12. Rotor assembly; 121. Main shaft; 122. Hammer disc; 123. Hammer shaft; 124. Threaded head; 125. Washer; 126. Nut; 13. Crushing assembly; 131. Hammer seat; 132. Mounting head; 133. Pin hole; 134. Hammer head; 135. Mounting port; 136. Pin opening; 137. Pin rod; 138. Cotter pin; 139. Circular groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0015] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a split hammerhead structure, including a crusher 1 and used for material crushing, wherein the crusher 1 includes: The main component 11 includes a housing 111 for containing materials; The rotor assembly 12 includes a main shaft 121 rotatably mounted on the left and right sides inside the housing 111, a hammer disc 122 fixed on the outer wall of the main shaft 121, and a plurality of circumferentially arranged hammer shafts 123 inserted and mounted inside the hammer disc 122. The crushing assembly 13 includes several hammer seats 131 sleeved and mounted on the hammer shaft 123. A mounting head 132 is fixed to the outer end of the hammer seat 131. A pin hole 133 is opened inside the mounting head 132. A hammer head 134 is mounted on the mounting head 132. A mounting opening 135 is opened inside the hammer head 134 and cooperates with the mounting head 132. A pin opening 136 is opened inside the hammer head 134. A pin rod 137 is inserted through the pin hole 133 on the mounting head 132 and the pin opening 136 on the hammer head 134. A cotter pin 138 is installed at the end of the pin rod 137.

[0016] In this embodiment, the hammer base 131 is used as a basic support and is sleeved on the hammer shaft 123. The outline of the mounting head 132 at its outer end matches the mounting port 135 of the hammer head 134, bearing and transmitting the main impact torque. Furthermore, the pin 137 passes through the pin hole 133 of the mounting head 132 and the pin opening 136 of the hammer head 134, bearing the main shear force and preventing radial movement. The cotter pin 138 is inserted into the end of the pin 137 to form an axial limit. This realizes the separation of the hammer head 134 as a wear-resistant part from the hammer base 131 and the mounting head 132 as structural parts. The pin-type connection structure is simple, and the assembly and disassembly process does not require complicated tools, improving the convenience of on-site maintenance.

[0017] Specifically, the crushing assembly 13 also includes circular grooves 139 formed at the two ends of the pin outlet 136 for accommodating the bent portion of the cotter pin 138.

[0018] In this embodiment, after the pin 137 is installed in place, the cotter pin 138 is passed through the hole at its end and bent. At this time, the bent part of the cotter pin 138 is completely accommodated inside the circular groove 139, preventing the bent part of the cotter pin 138 from protruding from the outer surface of the hammer head 134.

[0019] Specifically, the rotor assembly 12 also includes threaded heads 124 fixed at both ends of the hammer shaft 123, with washers 125 fitted on the threaded heads 124 and nuts 126 threaded onto the threaded heads 124.

[0020] In this embodiment, when it is necessary to install or replace the hammer shaft 123 and the complete set of crushing components 13 on it, it is only necessary to insert the hammer shaft 123 from the side of the hammer disc 122 and tighten the nuts 126 on the threaded heads 124 at both ends to achieve reliable fixation; during maintenance, the entire hammer shaft 123 and hammer seat 131 assembly can be pulled out from the rotor axis by loosening and removing the nuts 126.

[0021] Specifically, the main component 11 also includes disassembly ports 112 on the left and right sides at the front and rear ends of the housing 111, and flange covers 113 are installed on the disassembly ports 112.

[0022] In this embodiment, during maintenance, the flange cover 113 is first removed to expose the disassembly port 112, and then the nuts 126 at both ends of the hammer shaft 123 are unscrewed. At this time, the operator can remove the entire crushing assembly 13 sleeved on the hammer shaft 123 from the top of the housing 111. Then, the unloaded hammer shaft 123 can be horizontally pulled out of the rotor through the disassembly port 112 on the side.

[0023] Specifically, the hammerhead 134 is made of high-chromium cast iron, while the hammer base 131 and mounting head 132 are made of alloy structural steel.

[0024] In this embodiment, the wear life of the hammer head 134 is optimized, while ensuring the structural reliability of the hammer base 131 and the mounting head 132.

[0025] Specifically, the hammer head 134 is symmetrical about the geometric center plane of its mounting port 135, so that the hammer head 134 can be rotated 180° and then remounted on the mounting head 132.

[0026] In this embodiment, when the current working end of the hammer 134 fails due to impact and wear, the maintenance personnel can remove it from the mounting head 132, turn it 180 degrees, and reinstall the other end, which was originally in a non-working position, in the working position of the material being impacted, thereby improving its service life.

[0027] The working principle and usage process of this utility model are as follows: First, when the working surface of one side of the hammer head 134 needs to be replaced or maintained due to long-term impact wear, the operator removes the flange cover 113 on the side disassembly port 112 of the housing 111 to expose the side passage; then, the operator uses a tool to unscrew the nuts 126 on the threaded heads 124 at both ends of the hammer shaft 123 to release the axial lock on the hammer shaft 123; then, the hammer shaft 123 is pulled out horizontally through the side disassembly port 112, and at the same time, the entire crushing assembly 13 fitted on the hammer shaft 123 is removed from the opening at the top of the housing 111. Then, for the removed crushing component 13, if the hammer head 134 needs to be replaced, simply remove the locking cotter pin 138 and pull out the connecting pin 137 to separate the hammer head 134 from the mounting head 132; then install the new hammer head 134 onto the mounting head 132, and lock it by inserting the pin 137 and bending the cotter pin 138 into the round groove 139.

[0028] 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 process, method, article, or apparatus.

[0029] 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 split-type hammerhead structure, characterized in that: Includes a crusher (1) and is used for material crushing, the crusher (1) comprising: The main body component (11) includes a housing (111) for containing materials. The rotor assembly (12) includes a main shaft (121) rotatably mounted on the left and right sides inside the housing (111), a hammer disc (122) fixed on the outer wall of the main shaft (121), and a number of hammer shafts (123) arranged in a circle inserted inside the hammer disc (122). The crushing assembly (13) includes several hammer seats (131) sleeved on the hammer shaft (123). The outer end of the hammer seat (131) is fixed with a mounting head (132). The mounting head (132) has a pin hole (133) inside. A hammer head (134) is mounted on the mounting head (132). The hammer head (134) has a mounting opening (135) inside and cooperates with the mounting head (132). The hammer head (134) has a pin opening (136) inside. A pin rod (137) is inserted through the pin hole (133) on the mounting head (132) and the pin opening (136) on the hammer head (134). A cotter pin (138) is installed at the end of the pin rod (137).

2. The split hammerhead structure according to claim 1, characterized in that: The crushing assembly (13) also includes circular grooves (139) opened at both ends of the pin (136) for accommodating the bent portion of the cotter pin (138).

3. The split hammerhead structure according to claim 1, characterized in that: The rotor assembly (12) also includes threaded heads (124) fixed at both ends of the hammer shaft (123), with a washer (125) fitted on the threaded head (124) and a nut (126) threaded on the threaded head (124).

4. The split hammerhead structure according to claim 1, characterized in that: The main component (11) also includes disassembly ports (112) on the left and right sides at the front and rear ends of the housing (111), and flange covers (113) are installed on the disassembly ports (112).

5. A split hammerhead structure according to claim 1, characterized in that: The hammerhead (134) is made of high-chromium cast iron, and the hammer base (131) and mounting head (132) are made of alloy structural steel.

6. A split-type hammerhead structure according to claim 1, characterized in that: The hammer (134) is symmetrical about the geometric center plane of its mounting port (135), so that the hammer (134) can be rotated 180° and then remounted on the mounting head (132).

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