Hammer crusher hammer head quick change device

Abstract

The present invention provides a hammer head quick-change device for a hammer crusher, belonging to the technical field of hammer crusher parts, comprising a clamping ring fixed on a hammer disc at both ends of a hammer shaft and an end shaft stopper detachably limited by the clamping ring, the clamping ring and the hammer shaft are coaxially arranged, the end shaft stopper is pressed onto the hammer disc through a limit locking piece, the limit locking piece is detachably connected to the end of the hammer shaft, and the end shaft stopper comprises a self-locking piece for locking the limit locking piece; the present invention can not only realize the rapid replacement of the hammer head, but also form a self-locking structure through the end shaft stopper, the limit locking piece and the clamping ring, thereby ensuring the stability and reliability of the axial limit of the hammer shaft.

Description

Technical Field

[0001] The invention relates to the technical field of hammer crusher parts, and in particular to a hammer head quick-change device for a hammer crusher. Background Art

[0002] Hammer crusher is a crusher that uses the impact principle to crush materials. It has the characteristics of simple structure, high reliability and wide application range. It is widely used in mining, chemical, construction, railway and other industries. However, with the birth and rapid development of various new crushing equipment, hammer crusher products are facing greater competitive pressure. While pursuing the production capacity and efficiency of hammer crusher, people pay more attention to its quick and easy maintenance in the later stage, and strive to improve the comprehensive performance of products and enhance market competitiveness by reducing maintenance difficulty, reducing equipment downtime, and quickly replacing damaged spare parts.

[0003] Several rows of hammer discs are installed on the rotor of the hammer crusher. Hammer shafts are installed through the pin holes on the circumference of the hammer discs. Hammer heads are installed on the hammer shafts and distributed between the rows of hammer discs. The hammer heads are constantly worn during operation. When the wear reaches a certain level, the hammer heads need to be reversed.

[0004] There are two main connection and positioning methods for the hammer shaft of the existing hammer crusher. One is that the hammer disc pin holes at both ends of the rotor are countersunk holes, and the hammer shaft is axially positioned through the hammer discs at both ends. When reversing, the outermost hammer disc of the rotor needs to be completely removed, and then each hammer head is reversed in turn. This process is cumbersome and time-consuming, greatly reducing the use time of the equipment and affecting production. The other is to install end covers on the hammer disc pin holes at both ends of the rotor, which facilitates the disassembly of the hammer shaft, but during the operation process, the bolts on the end covers will loosen due to the vibration of the hammer shaft, and eventually cause the end covers to fall off, seriously affecting the safety of the equipment.

[0005] Therefore, it is necessary to design a hammer head replacement device with reliable structure, high operating efficiency and convenient maintenance to improve the equipment replacement and maintenance efficiency of the hammer crusher. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a hammer crusher hammer head quick change device, which can not only realize the rapid replacement of the hammer head, but also form a self-locking structure through the end shaft block, the limit locking piece and the retaining ring, thereby ensuring the stable and reliable axial limit of the hammer shaft.

[0007] In view of this, the present invention provides a quick-change device for the hammer head of a hammer crusher, comprising a retaining ring fixed on a hammer disc at both ends of a hammer shaft and an end shaft stopper detachably limited by the retaining ring, the retaining ring and the hammer shaft are coaxially arranged, the end shaft stopper is pressed onto the hammer disc through a limit locking piece, the limit locking piece is detachably connected to the end of the hammer shaft, and the end shaft stopper includes a self-locking piece for locking the limit locking piece.

[0008] Furthermore, two symmetrical limiting edges are provided on the end surface of the clamping ring away from the hammer disc, and two symmetrical limiting side ears extending outward are provided on the end surface of the end shaft stopper opposite to the clamping ring.

[0009] Furthermore, the limit locking member includes a pin shaft, one end of the pin shaft is provided with a pin shaft cap, and the center of the end shaft stopper is provided with a countersunk hole that cooperates with the pin shaft and the pin shaft cap.

[0010] Furthermore, a threaded pin is provided at one end of the pin shaft away from the pin shaft cap, and a threaded hole matching with the threaded pin is provided on the end surface of the hammer shaft.

[0011] Furthermore, the diameter of the threaded pin is smaller than the diameter of the pin shaft.

[0012] Furthermore, a U-shaped groove is provided on the limit retaining edge, and a pin hole is provided at the center of the two end surfaces of the limit side ears provided on the end shaft stop block. The pin hole is connected with the countersunk hole, and a limit pin passes through the pin hole. A limit groove is provided on the side of the pin shaft cap, and the width of the limit groove is greater than the diameter of the limit pin.

[0013] Furthermore, there are at least two symmetrical limiting grooves.

[0014] Furthermore, a groove corresponding to the pin hole is provided on the side wall of the countersunk hole.

[0015] The beneficial effects of the above technical solution of the present invention are as follows:

[0016] 1. In the present invention, the end shaft block, the limit locking member and the clamping ring are convenient to disassemble, so that the hammer shaft can be taken out and the hammer head can be quickly replaced.

[0017] 2. In the present invention, a self-locking structure is formed by the end shaft block, the limit locking member and the clamping ring, thereby ensuring the stability and reliability of the axial limit of the hammer shaft, thereby improving the operating stability of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of the hammer head quick-change device of the hammer crusher of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the middle end shaft stopper of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the limit locking member in the present invention;

[0021] Figure 4 It is a front view of the initial state of the middle end shaft stopper and the snap ring being installed in cooperation with each other in the present invention;

[0022] Figure 5This is a diagram of the intermediate state of the middle end shaft stopper and the snap ring being installed in cooperation with each other in the present invention;

[0023] Figure 6 It is a front view of the position-limiting locking member, the end shaft stopper and the snap ring after being installed in the present invention;

[0024] Figure 7 The figure is a schematic diagram of the overall structure of the hammer head quick-change device of the hammer crusher on the hammer rotor of the present invention.

[0025] 01. Hammer rotor; 1. Hammer shaft; 11. Threaded hole; 2. Hammer head; 3. Hammer disc; 4. Snap ring; 41. Limit rib; 42. U-shaped groove; 5. End shaft stopper; 51. Pin hole; 52. Limit side ear; 53. Limit pin; 54. Countersunk hole; 541. Groove; 6. Limit locking piece; 61. Pin cap; 62. Pin; 63. Threaded pin. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-7 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0027] like Figure 1-3 As shown in Figure 7: A quick-change device for the hammer head of a hammer crusher, comprising a retaining ring 4 fixed on the hammer disc 3 at both ends of the hammer shaft 1 and an end shaft stopper 5 which is detachably limited and matched with the retaining ring 4, wherein the retaining ring 4 is coaxially arranged with the hammer shaft 1, and the end shaft stopper 5 is pressed onto the hammer disc 3 through a limit locking member 6, and the limit locking member 6 is detachably connected to the end of the hammer shaft 1, and the end shaft stopper 5 includes a self-locking member for locking the limit locking member 6.

[0028] Not only can the hammer head 2 be quickly replaced, but also a self-locking structure is formed by the end shaft block 5, the limit locking piece 6 and the clamping ring 4, thereby ensuring that the axial limit of the hammer shaft 1 is stable and reliable.

[0029] According to one embodiment of the present invention, Figure 1-5 As shown,

[0030] The end surface of the clamping ring 4 away from the hammer disc 3 is provided with two symmetrical limiting ribs 41 , and the end surface of the end shaft stopper 5 opposite to the clamping ring 4 is provided with two symmetrical limiting side ears 52 extending outward.

[0031] The limit locking member 6 comprises a pin 62 , one end of which is provided with a pin cap 61 , and the center of the end shaft stopper 5 is provided with a countersunk hole 54 which cooperates with the pin 62 and the pin cap 61 .

[0032] A threaded pin 63 is disposed at one end of the pin shaft 62 away from the pin shaft cap 61 , and a threaded hole 11 cooperating with the threaded pin 63 is disposed on the end surface of the hammer shaft 1 .

[0033] The diameter of the threaded pin 63 is smaller than the diameter of the pin shaft 62 .

[0034] Among them, a U-shaped groove 42 is provided on the limiting retaining edge 41, and a pin hole 51 is provided at the center of the two end surfaces of the limiting side ears 52 on the end shaft stopper 5, and the pin hole 51 is connected with the countersunk hole 54, and a limiting pin 53 passes through the pin hole 51, and a limiting groove 611 is provided on the side of the pin shaft cap 61, and the width of the limiting groove 611 is greater than the diameter of the limiting pin 53.

[0035] There are at least two symmetrical limiting grooves 611 .

[0036] Wherein, a groove 541 corresponding to the pin hole 51 is provided on the side wall of the countersunk hole 54 .

[0037] The end shaft block 5, the limit locking piece 6 and the clamping ring 4 are convenient to disassemble, so that the hammer shaft 1 can be taken out, the hammer head 2 can be quickly replaced, and the difficulty of repair, maintenance and replacement is reduced.

[0038] The installation method of the present invention is as follows: Figure 4 As shown, firstly, the shaft end stopper 5 needs to be placed horizontally, put into the retaining ring 4, and then rotated 90°, as shown in FIG. Figure 5 As shown, the two limiting side ears 52 of the shaft end stopper 5 are clamped in the limiting retaining edge 41 of the clamping ring 4, and then the limiting pin 53 is passed through the pin hole 51 toward the U-shaped groove 42, so that one end of the limiting pin 53 is inserted into the U-shaped groove 42. At this time, Figure 6 As shown, the limit locking member 6 is passed through the shaft end block 5 and the retaining ring 4 respectively and connected to the end face of the hammer shaft 1. At this time, the limit pin 53 on the shaft end block 5 slides downward under the influence of gravity and is just stuck in the limit groove 611 of the limit locking member 6.

[0039] like Figure 6 As shown, when the rotor rotates 180°, the limit pin 53 at the bottom will rotate upward and still be stuck in the limit groove 611 of the limit locking member 6 under the influence of gravity, completing the self-locking of the limit locking member 6 and preventing the limit locking member 6 from loosening during rotation or vibration.

[0040] The limit pin 53 can simultaneously prevent the shaft end block 5 and the limit locking member 6 from rotating and loosening. When the shaft end block 5 and the limit locking member 6 cannot rotate, their axial movement is also restricted, and the axial direction of the hammer shaft 1 is finally limited.

[0041] The limiting locking member 6 , the limiting pin 53 , the shaft end stopper 5 and the clamping ring 4 form a closed self-locking structure, which ensures that the axial limiting of the hammer shaft 1 is stable and reliable.

[0042] When the hammer head 2 needs to be replaced, the two limit pins 53 only need to be pushed away from the limit grooves 611 on the limit locking member 6 to unscrew the limit locking member 6, and then the limit pins 53 are taken out respectively, and finally the shaft end block 5 is rotated 90° to make the shaft end block 5 disengage from the limit of the limit retaining edge 41 on the retaining ring 4, and the shaft end block 5 is taken out, and the hammer shaft 1 can be taken out from the hammer disk 3, and the reversal or replacement of the hammer head 2 is completed.

[0043] It can not only realize the rapid replacement of the hammer head 2, but also realize the axial limitation of the hammer shaft 1, can withstand the impact vibration of the hammer shaft 1, has high reliability, greatly reduces the labor intensity of replacing the hammer head 2, reduces the maintenance time of the equipment, improves the maintenance convenience of the equipment, and prolongs the service life of the equipment.

[0044] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hammer crusher hammer head quick change device, characterized by: The invention comprises a clamping ring (4) fixed on a hammer disc (3) at both ends of a hammer shaft (1) and an end shaft stopper (5) which is detachably limited and matched with the clamping ring (4); the clamping ring (4) and the hammer shaft (1) are coaxially arranged; the end shaft stopper (5) is pressed onto the hammer disc (3) through a limit locking member (6); the limit locking member (6) and the end of the hammer shaft (1) are detachably connected; the end shaft stopper (5) comprises a self-locking member for locking the limit locking member (6); two symmetrical limit retaining edges (41) are arranged on the end face of the clamping ring (4) away from the hammer disc (3); two symmetrical limit side ears (52) extending outward are arranged on the end face of the end shaft stopper (5) opposite to the clamping ring (4); the limit locking member (6) comprises a pin shaft (62); one end of the pin shaft (62) is A pin shaft cap (61) is provided, a countersunk hole (54) cooperating with the pin shaft (62) and the pin shaft cap (61) is provided at the center of the end shaft stopper (5), a threaded pin (63) is provided at one end of the pin shaft (62) away from the pin shaft cap (61), a threaded hole (11) cooperating with the threaded pin (63) is provided on the end surface of the hammer shaft (1), a U-shaped groove (42) is provided on the limiting retaining edge (41), a pin hole (51) is provided at the center of two end surfaces of the limiting side ears (52) provided on the end shaft stopper (5), the pin hole (51) is communicated with the countersunk hole (54), a limiting pin (53) passes through the pin hole (51), a limiting groove (611) is provided on the side surface of the pin shaft cap (61), and the width of the limiting groove (611) is greater than the diameter of the limiting pin (53).

2. The hammer head quick-change device for a hammer crusher according to claim 1, characterized in that: The diameter of the threaded pin (63) is smaller than the diameter of the pin shaft (62).

3. The hammer head quick-change device for a hammer crusher according to claim 1, characterized in that: A groove (541) corresponding to the pin hole (51) is provided on the side wall of the countersunk hole (54).

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