Protection device of tooth roller type crusher

Abstract

The utility model relates to the technical field of crusher protection devices, in particular to a protection device of a tooth roller type crusher, which comprises a shell, a plurality of yielding protection devices are arranged on the side wall of the shell, each yielding protection device comprises a yielding part, a yielding sliding chute is formed in the shell in a penetrating manner, the yielding parts are clamped in the yielding sliding chute in a sliding manner, and the yielding parts are connected with the yielding parts in a sliding manner. The torque arm is connected with the receding part and the driven part, when hard objects which cannot be crushed are put in, the crushing roller is pushed away by the hard objects, the rotating shafts on the two sides horizontally slide towards the two sides correspondingly, and the torque arm rotates along with the crushing roller; the adjusting rod moves in the opposite direction of the rotating shaft along with rotation of the torque arm, the disc spring is stressed and compressed in the direction of the adjusting rod, the crushing rollers horizontally move towards the two sides till the hard objects fall down from the gap between the two crushing rollers, the receding protection device can be reset to the original state, operation is convenient and fast through the structure, it can be guaranteed that the hard objects smoothly enter, and the device is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of crusher protection devices, in particular to a protection device for a toothed roller crusher. Background Art

[0002] Toothed roller crushers are widely used in industries such as coal, metallurgy, mining, chemicals, and building materials. They are particularly well-suited for crushing raw coal (including gangue) in large coal mines or coal preparation plants. In these industries, crushers often operate under harsh conditions, with material size and hardness constantly fluctuating and the potential for contamination with non-crushable materials such as iron and wood. Therefore, the design of protective devices is particularly important.

[0003] The primary function of a protective device is to quickly retract the crusher when hard objects enter. New protective devices offer advantages such as a large retraction distance, compact installation space, and aesthetics. The protective device for a toothed roller crusher is primarily based on mechanical principles and automatic control technology. By monitoring the equipment's operating status and parameter changes, it takes timely protective measures to prevent damage from overloads, hard objects entering the crusher, or other abnormal conditions. With technological advancements and industrial development, protective devices for toothed roller crushers are constantly being upgraded and improved.

[0004] When a large or hard object is thrown into the protective device and the crushing roller cannot retreat, the crushing roller may be damaged, affecting the working efficiency and safety. In view of this, a protective device for a toothed roller crusher is provided. Utility Model Content

[0005] The main purpose of the utility model is to provide a protective device for a toothed roller crusher to solve the problem in the related art that when a large block or hard object is put into the protective device and the crushing roller cannot retreat, the crushing roller may be damaged, thereby affecting work efficiency and safety.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a protection device for a tooth roller crusher is provided, comprising a shell, the shell being provided with a crushing chamber, a crushing roller being rotatably installed in the crushing chamber, and a rotating shaft being fixedly connected at both ends of the crushing roller, and a feed port communicating with the crushing chamber being provided at the top of the shell, and a plurality of retreat protection devices being provided on the side walls of the shell, the retreat protection device comprising a retreat portion, wherein a retreat chute is provided through the shell, the retreat portion is slidably engaged in the retreat chute, and a torque arm is hingedly installed on one side of the retreat portion, and a driven portion is hingedly connected to the other end of the torque arm, and the driven portion is used to realize automatic retreat and resetting of the rotating shaft.

[0007] As an optimal technical solution of the present invention, the retreat portion includes a fixed block, a pull rod is fixedly provided at one end of the fixed block, an inclined pad is fixedly provided near the edge of one end of the pull rod, and a connecting block is fixedly provided at the other end of the fixed block, and one end of the connecting block is hinged to the torque arm.

[0008] As a preferred technical solution of the present invention, the rotating shaft passes through and is rotatably mounted on the fixed block, and a pulley is fixedly mounted on one end of the rotating shaft.

[0009] As a preferred technical solution of the present invention, a limit plate is fixedly provided on the side wall of the shell, and the center of the side wall of the torque arm is rotatably mounted on the limit plate.

[0010] As a preferred technical solution of the present invention, the driven part includes a spring sleeve, which is fixedly mounted on the side wall of the shell. A cavity is opened inside the spring sleeve, and an adjusting rod is slidably installed in the cavity. Both ends of the adjusting rod pass through the spring sleeve shell and extend out of the shell, and a number of disc springs are fixedly stacked on the adjusting rod in the cavity.

[0011] As a preferred technical solution of the present invention, a first nut is threadedly installed on one end of the adjusting rod, a second nut is threadedly installed on the other end of the adjusting rod, and the end of the adjusting rod close to the first nut is hinged to the torque arm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the protection device of the tooth roller crusher, each retreat protection device is connected and rotated by a pulley and is driven by a motor. The structure is compact and rigorous. The retreat part and the driven part are connected by arranging a torque arm. When a hard object that cannot be crushed is put in, the crushing roller is pushed away by the hard object, and the rotating shafts on both sides slide horizontally to both sides respectively, and the torque arm rotates accordingly. The adjusting rod moves in the opposite direction of the rotating shaft as the torque arm rotates, and the disc spring is compressed along the direction of the adjusting rod. The crushing roller moves horizontally to both sides until the hard object falls from the gap between the two crushing rollers. The retreat protection device can be reset to its original state. This structure is easy to operate and can ensure the smooth passage of hard objects to avoid damage to the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall schematic diagram of a protective device for a toothed roller crusher in a preferred embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the protective device of the toothed roller crusher in the preferred embodiment of the present utility model;

[0016] Figure 3 This is an overall schematic diagram of the retreat protection device in a preferred embodiment of the present utility model;

[0017] Figure 4 This is an overall schematic diagram of the retreat protection device in a preferred embodiment of the present utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the retreat portion in a preferred embodiment of the present utility model.

[0019] Illustration:

[0020] 1. Housing; 12. Pulley;

[0021] 2. Retreat protection device; 21. Torque arm; 22. Limit plate; 3. Feed port;

[0022] 4. Retreat portion; 41. Fixed block; 42. Rotating shaft; 43. Pull rod; 44. Connecting block; 45. Inclined pad;

[0023] 5. Driven part; 51. Spring sleeve; 52. Cavity; 53. Disc spring; 54. Adjusting rod; 55. First nut; 56. Second nut. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0025] See also Figure 1-Figure 5 As shown, the purpose of this embodiment is to provide a protective device for a toothed roller crusher, comprising a housing 1, wherein the housing 1 is provided with a crushing chamber, a crushing roller is rotatably installed in the crushing chamber, and a rotating shaft 42 is fixedly connected to both ends of the crushing roller.

[0026] Two sets of upper and lower crushing rollers are provided on the shell 1, and two crushing rollers are arranged horizontally in each set. The pulleys of the upper and lower rotating shafts 42 on the same side are driven by belts, and any pulley on the same side is connected to a power source, which is preferably a motor. A pulley is also fixedly mounted on the motor output shaft, and the pulley of the motor output shaft drives the pulley on any rotating shaft 42 to rotate through a belt.

[0027] A feed port 3 communicating with the crushing chamber is provided on the top of the shell 1, and a plurality of retreat protection devices 2 are provided on the side walls of the shell 1. The retreat protection device 2 includes a retreat portion 4, wherein a retreat chute is provided through the shell 1, and the retreat portion 4 is slidably engaged in the retreat chute, and a torque arm 21 is hingedly installed on one side of the retreat portion 4, and a driven portion 5 is hingedly installed on the other end of the torque arm 21. The driven portion 5 is used to realize automatic retreat and resetting of the rotating shaft 42.

[0028] When the rotating shaft 42 is pushed by a hard object and moves horizontally to both sides, the torque arm 21 rotates and drives the driven part 5 to move horizontally to the other side.

[0029] The retreat portion 4 includes a fixed block 41, a pull rod 43 is fixedly provided at one end of the fixed block 41, an inclined pad 45 is fixedly provided near the edge of one end of the pull rod 43, and one side of the inclined pad 45 is fixedly connected to the outer side wall of the shell 1, and a connecting block 44 is fixedly provided at the other end of the fixed block 41, and one end of the connecting block 44 is hinged to the torque arm 21.

[0030] The rotating shaft 42 passes through and is rotatably mounted on the fixed block 41, and a pulley 12 is fixedly mounted on one end of the rotating shaft 42. The pulley 12 at one end is connected to the pulley 12 on the motor through a belt. The rotating shaft 42 is connected to another rotating shaft 42 in the vertical direction through a pulley to realize transmission, and two motors are provided to drive the two sets of rotating shafts 42 to rotate respectively.

[0031] A limit plate 22 is fixedly provided on the side wall of the housing 1 , and the center of the side wall of the torque arm 21 is rotatably mounted on the limit plate 22 .

[0032] The driven part 5 includes a spring sleeve 51, which is fixedly mounted on the side wall of the housing 1. A cavity 52 is defined within the spring sleeve 51. An adjusting rod 54 is slidably mounted within the cavity 52. ​​Both ends of the adjusting rod 54 pass through the housing of the spring sleeve 51 and extend out of the housing. A plurality of disc springs 53 are fixedly stacked on the adjusting rod 54 within the cavity 52. ​​The number and stacking arrangement of the disc springs 53 can be adjusted to precisely adjust the adjusting rod, making it more stable and reliable when subjected to loads and vibrations.

[0033] Specifically, the elastic coefficient (stiffness) of the disc spring 53 should be large enough to provide sufficient resistance when a hard object passes through, and to rebound quickly after the hard object passes through, so as to ensure the speed at which the crusher returns to normal working condition;

[0034] The maximum compression stroke of the disc spring 53 should be greater than or equal to the maximum displacement that the crushing roller may experience when encountering an object that cannot be crushed, ensuring that hard objects can pass through without getting stuck in the equipment.

[0035] At the same time, the preload force of the disc spring 53 in the absence of external force should be appropriate. Excessive preload force will make the system too rigid and affect the sensitivity of the system to hard objects; while excessively small preload force may cause the stability of the system to decrease.

[0036] A first nut 55 is threadedly mounted on one end of the adjusting rod 54 , a second nut 56 is threadedly mounted on the other end of the adjusting rod 54 , and an end of the adjusting rod 54 close to the first nut 55 is hinged to the torque arm 21 .

[0037] To meet this requirement, when the adjusting rod 54 moves, the connecting block 44 moves in the opposite direction thereof, and both ends of the torque arm 21 are hinged to the adjusting rod 54 and the connecting block 44 respectively, and the adjusting rod 54 is located directly below the connecting block 44 .

[0038] The first nut 55 and the second nut 56 are used for limiting. By tightening the first nut 55 and the second nut 56 , the horizontal movement distance of the adjustment rod 54 can be changed, thereby adjusting the retreat distance.

[0039] A cross-hitch is provided at one end of the adjusting rod 54, and the torque arm 21 is located between the first nut 55 and the cross-hitch. The design of the cross-hitch is relatively stable and reliable, and the structure is strong. It can withstand a certain force and torque, and it allows the torque arm 21 to deflect within a certain range. This stability ensures reliability and durability in various application environments, and reduces safety hazards caused by structural failure or damage.

[0040] When the present invention is used, the rotating shaft 42 is rotatably mounted on the retreat protection device 2, and the motor drives the pulley 12 to drive the rotating shaft 42 to rotate to achieve crushing. At this time, the rotating shaft 42 and the fixed block 41 are both in the initial state. When a hard object that cannot be crushed is put into the feed port 3, the crushing roller is pushed away by the hard object. At the same time, the rotating shafts 42 on both sides slide horizontally to both sides respectively, and the fixed block 41 pulls one end of the torsion arm 21 to move along with the rotating shaft 42. Therefore, the torsion arm 21 rotates on the limit plate 22, and the adjusting rod 54 moves in the opposite direction of the rotating shaft 42 as the torsion arm 21 rotates. At the same time, the disc spring 53 is compressed along the direction of the adjusting rod 54, and the crushing roller Move horizontally to both sides until the hard object falls from the gap between the two crushing rollers. In order to ensure that the belts on the upper and lower rotating shafts 42 on the same side do not loosen when the crushing roller moves, a tensioner needs to be added to the pulley system. The tensioner can automatically adjust its position when the crushing roller moves horizontally to maintain the belt tension. The tensioner usually contains a spring or a hydraulic cylinder, so that the tensioner can dynamically adjust its position as the crushing roller moves. The tensioner is a commonly used holding device in belt and chain transmission systems. Its characteristic is that it can keep the belt and chain with appropriate tension during the transmission process, thereby preventing the belt from slipping or preventing the synchronous belt from jumping or de-toothing and being dragged out.

[0041] After the hard object passes through the crushing roller smoothly, the disc spring 53 loses its force and rebounds, driving the adjusting rod 54 to reset. The reset adjusting rod 54 drives the torque arm 21 to rotate, and the rotating torque arm 21 pulls the fixed block 41 to reset. Therefore, the rotating shaft 42 returns to its initial state together with the fixed block 41.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A protective device for a toothed roller crusher, comprising a housing (1), wherein the housing (1) is provided with a crushing chamber, wherein a crushing roller is rotatably mounted in the crushing chamber, and both ends of the crushing roller are fixedly connected to a rotating shaft (42), and a feed port (3) communicating with the crushing chamber is provided at the top of the housing (1), characterized in that: The side wall of the shell (1) is provided with a plurality of retreat protection devices (2), and the retreat protection devices (2) include a retreat portion (4), wherein a retreat chute is provided through the shell (1), and the retreat portion (4) is slidably engaged in the retreat chute, and a torque arm (21) is hingedly mounted on one side of the retreat portion (4), and a driven portion (5) is hingedly mounted on the other end of the torque arm (21), and the driven portion (5) is used to drive the automatic retreat and reset of the rotating shaft (42).

2. The protective device for the toothed roller crusher according to claim 1, characterized in that: The retreat portion (4) comprises a fixed block (41), a pull rod (43) is fixedly provided at one end of the fixed block (41), an inclined pad (45) is fixedly provided near an edge of one end of the pull rod (43), and a connecting block (44) is fixedly provided at the other end of the fixed block (41), and one end of the connecting block (44) is hinged to the torque arm (21).

3. The protective device for the toothed roller crusher according to claim 2, characterized in that: The rotating shaft (42) passes through and is rotatably mounted on the fixed block (41), and a pulley (12) is fixedly mounted on one end of the rotating shaft (42).

4. The protective device for the toothed roller crusher according to claim 1, characterized in that: A limiting plate (22) is fixedly provided on the side wall of the housing (1), and the center of the side wall of the torque arm (21) is rotatably mounted on the limiting plate (22).

5. The protective device for the toothed roller crusher according to claim 1, characterized in that: The driven part (5) includes a spring sleeve (51), the spring sleeve (51) is fixedly mounted on the side wall of the housing (1), a cavity (52) is provided inside the spring sleeve (51), an adjustment rod (54) is slidably mounted in the cavity (52), and both ends of the adjustment rod (54) pass through the spring sleeve (51) housing and extend out of the housing, and a plurality of disc springs (53) are fixedly stacked on the adjustment rod (54) in the cavity (52).

6. The protective device for the toothed roller crusher according to claim 5, characterized in that: A first nut (55) is threadedly mounted on one end of the adjusting rod (54), a second nut (56) is threadedly mounted on the other end of the adjusting rod (54), and an end of the adjusting rod (54) close to the first nut (55) is hinged to the torque arm (21).

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