A jaw crusher

Abstract

The present application relates to the technical field of crushing equipment, and discloses a jaw crusher, including a frame, a transmission component is movably sleeved at the top of the middle part of the inner cavity of the frame, and the transmission component includes an outer connecting shaft movably sleeved with the top of the middle part of the inner cavity of the frame, and the outer surface of the outer connecting shaft is fixedly sleeved with a tooth, and a transmission wheel is provided on the outer surface of the outer connecting shaft through the tooth, and at the same time, the cavity structure formed by the tooth is filled with magnetorheological fluid, and an electromagnetic device is provided inside the transmission wheel and at a corresponding position of the tooth. A jaw crusher provided in the present application, with respect to the arrangement of the transmission component and the structure thereon, when a relatively hard ore or material appears between the static jaw assembly and the movable jaw assembly, causing the periodic reciprocating motion of the movable jaw assembly to be blocked, can force the transmission wheel and the outer connecting shaft to rotate relative to each other, so as to effectively extend the extrusion strength and duration for certain relatively hard ores or materials.

Description

Technical Field

[0001] The present application relates to the technical field of crusher equipment, and in particular to a jaw crusher. Background Art

[0002] Jaw crusher is a kind of equipment that consists of two jaw plates, a movable jaw and a static jaw, to form a crushing chamber, and crushes materials during the periodic reciprocating motion of the movable jaw. Compared with other crushers, the jaw crusher has a larger crushing ratio and a more uniform particle size. At the same time, the entire crushing chamber is deep and has no dead corners, which makes its feeding capacity and output higher. It is widely used in the crushing of various ores or bulk materials in industries such as mining and smelting, building materials, roads, railways, and water conservancy projects.

[0003] Among them, the destructive strength of the crusher not only depends on the extrusion strength applied to the ore or material, but also is closely related to the extrusion time of the ore or material during the crushing process. However, the movement cycle of the movable jaw on the existing jaw crusher is fixed, which makes the crushing and extrusion time of the ore or material shorter. When facing some ores or materials with higher hardness, the extrusion crushing force generated is limited, so that the crushing efficiency and quality of some ores or materials with higher hardness are lower, and too long extrusion time may cause a large number of ores or materials with lower hardness to be over-crushed, which not only affects the production efficiency of the jaw crusher, but also may cause unnecessary damage to these ores or materials.

[0004] Therefore, there is an urgent need for a jaw crusher that can adjust the squeezing time according to the hardness of the ore or material in actual operation, so as to achieve the best crushing effect and economic benefit of the jaw crusher. Summary of the invention

[0005] The present application proposes a jaw crusher, which has the function of pausing the periodic reciprocating motion of the movable jaw while maintaining the continuous rotation of the driving motor, so as to effectively extend the extrusion time of the ore or material with a higher hardness, so that the crushing efficiency of certain ores or materials with a higher hardness is higher and the quality is better. It is used to solve the problem that the movement cycle of the movable jaw on the existing jaw crusher is fixed, so that the crushing and extrusion time of the ore or material is shorter, and when facing certain ores or materials with a higher hardness, the extrusion and crushing force generated is limited, so that the crushing efficiency of certain ores or materials with a higher hardness is lower and the quality is poor.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a jaw crusher comprises a frame, a static jaw assembly is fixedly installed on one side of the inner cavity of the frame, a bracket is fixedly installed on the other side of the inner cavity of the frame, a driving motor is arranged at the top end of the bracket, and a transmission component with a flywheel structure is movably sleeved on one end of the outer surface at the top middle part of the inner cavity of the frame, a transmission wheel which is transmission-connected to the output shaft of the driving motor is fixedly sleeved on the other side of the outer surface of the transmission component, and then, under the action of the driving motor and the transmission wheel, the transmission component can be driven to rotate accordingly, a movable jaw assembly is pinned in the middle part of the outer surface of the transmission component, and a crushing cavity for placing ore or material is formed between the movable jaw assembly and the static jaw assembly, and when the transmission component rotates, the movable jaw assembly can be driven to perform periodic reciprocating motion, thereby placing ore or material in the crushing cavity The ore or material is crushed, the bottom of one side of the movable jaw assembly is pinned to the middle part of one side of the bracket through a connecting rod, and then the side of the movable jaw assembly is supported by the connecting rod, the transmission component includes an outer connecting shaft movably sleeved with the top end of the middle part of the inner cavity of the frame, the outer surface of the outer connecting shaft is fixedly sleeved with a tooth, and a transmission wheel is provided on the outer surface of the outer connecting shaft through the tooth, and at the same time, a magnetorheological fluid is filled in the cavity structure formed by the tooth, an electromagnetic device is provided inside the transmission wheel and at the corresponding position of the tooth, and then the magnetorheological fluid in the tooth can be converted into a solid-like state through the magnetic field generated by the electromagnetic device, so as to form a fixed connection between the transmission wheel and the outer connecting shaft, and an eccentric shaft pinned to the movable jaw assembly is provided at the other end of the outer connecting shaft, and then when the outer connecting shaft rotates, the movable jaw assembly can be synchronously driven to perform periodic reciprocating motion.

[0007] Furthermore, the twist teeth are configured as a spiral structure, and a plurality of through holes arranged in a ring array along the central axis of the outer connecting shaft are provided inside the twist teeth for circulating the magnetorheological fluid.

[0008] Furthermore, the outer connecting shaft is internally movably sleeved with an inner connecting shaft, and the corresponding ends of the outer connecting shaft and the inner connecting shaft are respectively set to inclined groove structures, and one end of the inner connecting shaft extends to one side of the outer side of the outer connecting shaft and is fixedly connected to the end of the eccentric shaft, and the inner connecting shaft is internally movably clamped with a linkage rod, and one end of the linkage rod extends to the other side of the outer side of the outer connecting shaft, and the outer connecting shaft and the linkage rod are transmission-connected by an elastic member movably sleeved on one side of the outer surface of the linkage rod, and then, under the action of the outer connecting shaft, the groove at the end of the inner connecting shaft and the elastic force of the elastic member, a fixed sleeve is formed between the outer connecting shaft and the inner connecting shaft, and when the outer connecting shaft rotates, the eccentric shaft can be synchronously driven to rotate accordingly, and when a hard ore or material appears between the static jaw assembly and the movable jaw assembly, causing the periodic reciprocating motion of the movable jaw assembly to be blocked, a relative rotational motion can occur between the outer connecting shaft and the inner connecting shaft, and further a part of the rotational torque of the outer connecting shaft is converted into the elastic potential energy of the elastic member.

[0009] Furthermore, a conductive ring is provided on one side of the inner wall of the inner connecting shaft, and an induction ring is provided on one side of the outer surface of the linkage rod, and the conductive ring and the induction ring form an electrical feedback connection between the control system and the electromagnetic device, so that when the outer connecting shaft and the inner connecting shaft move relative to each other under the action of their upslope, the size of the magnetic field generated by the electromagnetic device can be automatically regulated by changing the degree of overlap between the conductive ring and the induction ring.

[0010] Furthermore, the induction ring is located on the left side of the conductive ring, and when the outer connecting shaft and the inner connecting shaft move relative to each other under the action of the upper slope, the overlap between the conductive ring and the induction ring becomes less, and the degree of solidification of the magnetorheological fluid on the cutter teeth can be flexibly adjusted according to the size of the harder ore or material. While maintaining the continuous rotation of the outer connecting shaft with the driving motor, the extrusion strength and duration of the movable jaw assembly for the ore or material with greater hardness can be guaranteed.

[0011] Furthermore, one end of the eccentric shaft is provided with a vent hole connected to the inner cavity of the inner connecting shaft to ensure the balance of air pressure in the inner cavities when the outer connecting shaft and the inner connecting shaft move relative to each other.

[0012] The beneficial effects of the present invention are as follows:

[0013] A jaw crusher provided in the present application has a transmission component and a structure thereon. When a relatively hard ore or material appears between the static jaw assembly and the movable jaw assembly, causing the periodic reciprocating motion of the movable jaw assembly to be blocked, a portion of the rotational torque of the outer connecting shaft can be converted into the internal energy of the magnetorheological fluid, and a relative rotational motion is forced to occur between the transmission wheel and the outer connecting shaft. Then, while maintaining the continuous rotation of the outer connecting shaft with the driving motor, the periodic reciprocating motion of the movable jaw assembly can be suspended to effectively extend the extrusion strength and duration for certain ores or materials with relatively high hardness, thereby achieving higher crushing efficiency and better quality for certain ores or materials with relatively high hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work:

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a front view of the structure of the present invention;

[0017] Figure 3 A top view of the structure of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the transmission component of the present invention;

[0019] Figure 5 The structure of the present invention Figure 4 An enlarged schematic diagram of point A.

[0020] In the figure: 1-frame, 2-static jaw assembly, 3-bracket, 4-drive motor, 5-transmission wheel, 6-transmission component, 7-movable jaw assembly, 8-connecting rod, 9-outer connecting shaft, 10-inner connecting shaft, 11-eccentric shaft, 12-twist teeth, 13-electromagnetic device, 14-linkage rod, 15-elastic member, 16-conductive ring, 17-induction ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 3 As shown, a jaw crusher comprises a frame 1, a static jaw assembly 2 is fixedly mounted on one side of the inner cavity of the frame 1, a bracket 3 is fixedly mounted on the other side of the inner cavity of the frame 1, and a driving motor 4 is arranged at the top of the bracket 3, and a transmission component 6 with a flywheel structure is movably sleeved on one end of the outer surface of the top middle part of the inner cavity of the frame 1, and a transmission wheel 5 which is transmission-connected to the output shaft of the driving motor 4 is fixedly sleeved on the other side of the outer surface of the transmission component 6, and then under the action of the driving motor 4 and the transmission wheel 5, the transmission component 6 can be driven to rotate accordingly, a movable jaw assembly 7 is pinned in the middle part of the outer surface of the transmission component 6, and a crushing cavity for placing ore or material is formed between the movable jaw assembly 7 and the static jaw assembly 2, and when the transmission component 6 rotates, the movable jaw assembly 7 can be driven to reciprocate periodically, so as to crush the ore or material placed in the crushing cavity, and the bottom of one side of the movable jaw assembly 7 is pinned to the middle part of one side of the bracket 3 through a connecting rod 8, and then the side of the movable jaw assembly 7 is supported by the connecting rod 8, as shown in FIG. Figure 4As shown, the transmission component 6 includes an outer connecting shaft 9 movably sleeved with the top end of the middle part of the inner cavity of the frame 1, and a gear 12 is fixedly sleeved on the outer surface of the outer connecting shaft 9, and a transmission wheel 5 is arranged on the outer surface of the outer connecting shaft 9 through the gear 12. At the same time, the cavity structure formed by the gear 12 is filled with magnetorheological fluid, and an electromagnetic device 13 is arranged inside the transmission wheel 5 and at a corresponding position of the gear 12, and then the magnetorheological fluid in the gear 12 can be converted into a solid-like state through the magnetic field generated by the electromagnetic device 13, so as to form a fixed connection between the transmission wheel 5 and the outer connecting shaft 9, and an eccentric shaft 11 pinned to the movable jaw assembly 7 is arranged at the other end of the outer connecting shaft 9, so that when the outer connecting shaft 9 rotates, the movable jaw assembly 7 can be synchronously driven to perform periodic reciprocating motions;

[0023] When a relatively hard ore or material appears between the static jaw assembly 2 and the movable jaw assembly 7, causing the periodic reciprocating motion of the movable jaw assembly 7 to be blocked, a portion of the rotational torque of the outer connecting shaft 9 can be converted into the internal energy of the magnetorheological fluid, and a relative rotational motion can be forced between the transmission wheel 5 and the outer connecting shaft 9. Then, while maintaining the continuous rotation of the outer connecting shaft 9 with the driving motor 4, the periodic reciprocating motion of the movable jaw assembly 7 can be suspended to effectively extend the extrusion strength and duration for certain relatively hard ores or materials.

[0024] like Figure 5 As shown, in the present technical solution, the tooth 12 is configured as a spiral structure, and a plurality of through holes arranged in a ring array along the central axis of the outer connecting shaft 9 are provided inside the tooth 12 for circulating the magnetorheological fluid.

[0025] like Figure 4 As shown, in the present technical solution, the inner connecting shaft 10 is movably sleeved inside the outer connecting shaft 9, and the corresponding ends of the outer connecting shaft 9 and the inner connecting shaft 10 are respectively set as inclined groove structures, and one end of the inner connecting shaft 10 extends to one side of the outer side of the outer connecting shaft 9 and is fixedly connected to the end of the eccentric shaft 11, and the inner connecting shaft 10 is movably clamped with a linkage rod 14, and one end of the linkage rod 14 extends to the other side of the outer side of the outer connecting shaft 9, and the outer connecting shaft 9 and the linkage rod 14 are connected to each other through an elastic member 15 movably sleeved on one side of the outer surface of the linkage rod 14, so as to be connected to the outer connecting shaft 9. Under the action of the groove at the end of the inner connecting shaft 10 and the elastic force of the elastic member 15, a fixed sleeve is formed between the outer connecting shaft 9 and the inner connecting shaft 10, and when the outer connecting shaft 9 rotates, the eccentric shaft 11 can be synchronously driven to rotate accordingly. When a hard ore or material appears between the static jaw assembly 2 and the movable jaw assembly 7, causing the periodic reciprocating motion of the movable jaw assembly 7 to be blocked, a relative rotational motion can occur between the outer connecting shaft 9 and the inner connecting shaft 10, and a part of the rotational torque of the outer connecting shaft 9 is further converted into the elastic potential energy of the elastic member 15.

[0026] like Figure 4 , Figure 5 As shown, in the present technical solution, a conductive ring 16 is provided on one side of the inner wall of the inner connecting shaft 10, and an induction ring 17 is provided on one side of the outer surface of the linkage rod 14, and the conductive ring 16 and the induction ring 17 form an electrical feedback connection with the electromagnetic device 13 through a control system, and then when the outer connecting shaft 9 and the inner connecting shaft 10 move relative to each other under the action of their upslopes, the size of the magnetic field generated by the electromagnetic device 13 can be automatically regulated by changing the degree of overlap between the conductive ring 16 and the induction ring 17.

[0027] like Figure 1 , Figure 4 as well as Figure 5 As shown, in the present technical solution, the induction ring 17 is located on the left side of the conductive ring 16, and when the outer connecting shaft 9 and the inner connecting shaft 10 move relative to each other under the action of the upper slope, the overlap between the conductive ring 16 and the induction ring 17 becomes less, and then the degree of solidification of the magnetorheological fluid on the cutter tooth 12 can be flexibly adjusted according to the size of the harder ore or material. While keeping the outer connecting shaft 9 continuously rotating with the driving motor 4, the extrusion strength and duration of the movable jaw assembly 7 for the ore or material with greater hardness can be guaranteed.

[0028] like Figure 4 As shown, in the present technical solution, a vent hole connected to the inner cavity of the inner connecting shaft 10 is provided at one end of the eccentric shaft 11 to ensure the balance of the air pressure in the inner cavity when the outer connecting shaft 9 and the inner connecting shaft 10 move relative to each other.

[0029] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A jaw crusher, comprising a frame (1), a stationary jaw assembly (2) being fixedly mounted on one side of an inner cavity of the frame (1), a bracket (3) being fixedly mounted on the other side of the inner cavity of the frame (1), a driving motor (4) being provided at the top end of the bracket (3), a transmission component (6) being movably sleeved at the top end of the middle portion of the inner cavity of the frame (1), a transmission wheel (5) being fixedly sleeved on the other side of the outer surface of the transmission component (6) and being drivingly connected to the output shaft of the driving motor (4), a movable jaw assembly (7) being pinned at the middle portion of the outer surface of the transmission component (6), the bottom of one side of the movable jaw assembly (7) being pinned to the middle portion of one side of the bracket (3) via a connecting rod (8), characterized in that: The transmission component (6) comprises an outer connecting shaft (9) movably sleeved with the top end of the middle part of the inner cavity of the frame (1); a tooth (12) is fixedly sleeved on the outer surface of the outer connecting shaft (9); a transmission wheel (5) is arranged on the outer surface of the outer connecting shaft (9) through the tooth (12); a cavity structure formed by the tooth (12) is filled with magnetorheological fluid; an electromagnetic device (13) is arranged inside the transmission wheel (5) and at a position corresponding to the tooth (12); and an eccentric shaft (11) is arranged at the other end of the outer connecting shaft (9) and is pin-connected to the movable jaw assembly (7); The outer connecting shaft (9) is internally movably sleeved with an inner connecting shaft (10), and the corresponding ends of the outer connecting shaft (9) and the inner connecting shaft (10) are respectively provided with inclined groove structures, and one end of the inner connecting shaft (10) extends to one side of the outer side of the outer connecting shaft (9) and is fixedly connected to the end of the eccentric shaft (11), and the inner connecting shaft (10) is internally movably clamped with a linkage rod (14), and one end of the linkage rod (14) extends to the other side of the outer side of the outer connecting shaft (9), and the outer connecting shaft (9) and the linkage rod (14) are transmission-connected via an elastic member (15) movably sleeved on one side of the outer surface of the linkage rod (14); A conductive ring (16) is provided on one side of the inner wall of the inner connecting shaft (10), and an induction ring (17) is provided on one side of the outer surface of the linkage rod (14). The conductive ring (16) and the induction ring (17) form an electrical feedback connection between the control system and the electromagnetic device (13). The induction ring (17) is located on the left side of the conductive ring (16). When the outer connecting shaft (9) and the inner connecting shaft (10) move relative to each other under the action of their upslope, the degree of overlap between the conductive ring (16) and the induction ring (17) changes accordingly.

2. The jaw crusher according to claim 1, characterized in that: The twisting teeth (12) are configured as a spiral rotating structure, and a through hole is provided inside the twisting teeth along the central axis direction of the external connecting shaft (9).

3. The jaw crusher according to claim 2, characterized in that: One end of the eccentric shaft (11) is provided with a vent hole connected to the inner cavity of the inner connecting shaft (10), so as to ensure that the air pressure in the inner cavities of the outer connecting shaft (9) and the inner connecting shaft (10) is balanced when the outer connecting shaft (9) and the inner connecting shaft (10) move relative to each other.

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