High-calcium stone double-geared roller crusher capable of resisting impact of large stones and use method of high-calcium stone double-geared roller crusher

Abstract

The invention relates to the field of double-geared roller crusher equipment, in particular to a high-calcium stone double-geared roller crusher resistant to impact of large stones and a using method thereof.The high-calcium stone double-geared roller crusher comprises a machine body, a machine box and two sets of crushing rollers, the machine box is fixed to the top of the machine body, the two sets of crushing rollers are arranged in the machine box side by side, and the high-calcium stone double-geared roller crusher further comprises two transmission rods; the transmission rod penetrates through the crushing roller along the axis of the crushing roller, and a swing frame for supporting the crushing roller to longitudinally slide back and forth is arranged on the outer side of the end part of the transmission rod outside the machine body. The double-geared-roller crusher has the beneficial effects that an inter-tooth crushing function is added on the basis of a rotary crushing function of the double-geared-roller crusher, so that the crushing speed is increased; in addition, the axial crushing action of the crushing roller is decomposed into a slow extrusion energy storage process and a quick release impact process, the refining of fragile materials is promoted in the extrusion process, high-hardness materials are crushed in the impact process, and the crushing effect is improved; and the synchronizer serving as an overload protection mechanism is arranged, so that overload damage caused by jamming of the motor of the driving part is avoided.

Description

Technical Field

[0001] The invention relates to the field of double-toothed roller crusher equipment, and in particular to a high-calcium stone double-toothed roller crusher that is resistant to the impact of large stones and a use method thereof. Background Art

[0002] The double-toothed roller crusher is a crushing equipment widely used in many industries. It is mainly used for coarse and medium crushing of medium-hard or low-hardness materials. The double-toothed roller crusher has two relatively rotating toothed rollers, which are usually equipped with ring-shaped crushing teeth. The crushing teeth of the toothed rollers on both sides are staggered to enhance the shearing and tearing effect on the material. However, since the crushing rollers of the traditional double-toothed roller crusher are fixed in the axial direction, the tooth spacing of the two sets of double-toothed roller crusher's crushing teeth at the staggered overlapping position is constant, and thus it is impossible to actively apply crushing pressure in the axial direction of the crushing roller during the crushing process. The crushing efficiency needs to be improved. In addition, since the two sets of crushing rollers can only crush the material by rotating, the top side of the crushing roller is easily stuck by large pieces of material, which then causes the drive motor to be stuck due to excessive load. After the overload protection is triggered, the large pieces of material stuck in the chassis can only be manually removed, and then the material is re-added and the machine is started for crushing. The operation is cumbersome, and the crushing roller is difficult to clean after it is stuck, which is inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a high-calcium stone double-toothed roller crusher that is resistant to the impact of large stones and a method of using the same in order to solve the above-mentioned problems. The inter-tooth crushing function is added to the rotary crushing function of the double-toothed roller crusher to speed up the crushing speed; in addition, the axial crushing action of the crushing roller is decomposed into a slow extrusion energy storage process and a rapid release impact process, which promotes the refinement of fragile materials during the extrusion process and crushes high-hardness materials during the impact process to improve the crushing effect; and a synchronizer is provided as an overload protection mechanism to prevent the drive motor from getting stuck and overloaded and damaged, as described below for details.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a high-calcium stone double-toothed roller crusher resistant to the impact of large blocks of stone, comprising a machine body, a machine box and two groups of crushing rollers, wherein the machine box is fixed on the top of the machine body, and the two groups of crushing rollers are arranged in parallel inside the machine box, and further comprising two transmission rods, wherein the transmission rods penetrate the crushing rollers along the axes of the crushing rollers, and the outer sides of the ends of the transmission rods outside the machine body are provided with a swing frame for supporting the longitudinal reciprocating sliding of the crushing rollers;

[0006] An axle tube extending out of the machine body is coaxially fixed to the outer end surface of the crushing roller, a regular polygonal transmission groove is longitudinally passed through the middle of the axle tube, the transmission rod passes through the transmission groove and slides with the transmission groove, the outer circumference of the crushing roller is densely covered with crushing teeth, and the crushing teeth of the two groups of crushing rollers are arranged in a ring shape and staggered front and back.

[0007] Preferably, a traction groove with a circular groove structure is provided on the outer circumferential side of one end of the shaft tube close to the swing frame, a drive shaft is provided on the outside of the swing frame, and two groups of drive parts supporting the rotation of the drive shaft are provided at the front and rear of the machine body corresponding to the two groups of crushing rollers.

[0008] Preferably, the swing frame includes a mounting ring fixed to the outside of the machine body, a plurality of groups of restraining ears extending horizontally outward are fixed around the outer circumference of the mounting ring, a sliding rod is longitudinally penetrated by the outer end of the restraining ear, a traction ring is arranged in the middle of the plurality of groups of restraining ears, the traction ring is sleeved in the traction groove of the shaft tube at the outer end of the crushing roller, and the traction ring is rotatably matched with the shaft tube through the traction groove, a plurality of groups of sliding ears are arranged on the outer end of the traction ring corresponding to the restraining ears, the sliding rod penetrates the sliding ear and is gap-matched with the sliding ear.

[0009] Preferably, a thrust bearing supporting the traction ring is arranged inside the traction groove, and a plurality of sliding rods extending from the constraint ear are fixed with a wheel frame seat sleeved to the outside of the drive shaft at one end, the wheel frame seat is a circular ring structure, and a plurality of swing grooves are arranged around the outer circumference of the drive shaft.

[0010] Preferably, the swing groove includes an inclined bevel segment and a straight side segment extending in a straight line, and the connection between the bevel segment and the straight side segment is a semicircular groove structure. A plurality of axles are rotatably arranged in the middle of the wheel frame seat, and the axles extend radially along the drive shaft, and rollers that can extend into the swing groove are rotatably arranged at the ends of the axles.

[0011] Preferably, the sliding rod has a mounting nut threadedly engaged at one end away from the wheel frame seat, and the sliding rod on the inner side of the restraining ear is provided with a spring that presses against the traction ring. The spring keeps the roller and the swing groove of the drive shaft pressed tightly, the compression stroke of the spring is greater than the depth of the swing groove, and the end face of the mounting ring is penetrated by a mounting hole for fixing the body with bolts.

[0012] Preferably, a synchronizer is connected between the drive shaft and the transmission rod, a transmission flange is fixed to the outer end face of the drive shaft, and the synchronizer includes two groups of semi-cylindrical half-shell covers covering each other, and observation holes are passed through the middle of the two groups of half-shell covers.

[0013] Preferably, the half-shell cover is fixedly connected to the end face of the driving shaft, and one end of the driving shaft extending into the half-shell cover is surrounded and fixed with multiple groups of active teeth with helical tooth structure, and the inclination direction of the active teeth is opposite to the rotation direction of the transmission rod and the crushing roller. A rotating ring is arranged inside the half-shell cover to rotate away from one end of the driving shaft, and a separation shaft is fitted in the middle of the rotating ring, and a driven tooth that can engage with the active tooth is fixed on the end face of the separation shaft.

[0014] Preferably, a pressure ring is fixed to the outside of the separation shaft between the driven tooth and the rotating ring, and a compression spring is sleeved on the outside of the separation shaft between the pressure ring and the rotating ring, and the compression spring keeps the driven tooth and the driving tooth in tight engagement, and a fixing ring is fixed to one end of the separation shaft extending out of the half-shell cover, and a fixing hole is provided at one end of the transmission rod close to the synchronizer, and bolts are passed through the fixing ring and extended into the fixing hole to tighten the transmission rod, and a tail cover fixed to the outside of the machine body is provided at the other end of the transmission rod, and a feed cover with a built-in gate valve is provided at the top opening of the chassis.

[0015] The method for using the high-calcium stone double-toothed roller crusher that is resistant to the impact of large stones comprises the following steps:

[0016] a. When crushing materials, large pieces of materials are fed into the machine box through the feed cover of the machine box opening. The materials gather above the intersection of the top sides of the two sets of crushing rollers, and the drive shaft is driven to rotate through the driving part. The drive shaft uses the bite action of the driving teeth and the driven teeth inside the synchronizer to transmit the rotational power of the drive shaft to the transmission rod through the synchronizer. The transmission rod drives the shaft tube to drive the crushing rollers to rotate, so that the two sets of crushing rollers rotate in the opposite direction to achieve material extrusion and crushing;

[0017] b. During the rotation of the driving shaft, the pressure wheel pressed into the swing groove outside the driving shaft is subjected to the top pressure of the swing groove. When the driving shaft rotates to the bevel section against the roller, multiple groups of rollers move away from the machine body under the support of the wheel frame seat and the wheel shaft. At the same time, under the sliding guiding action of the constraint ear on the slide bar, the wheel frame seat is used to drive multiple slide bars to pull the traction ring to slide synchronously. At the same time, the traction ring in the outward sliding state cooperates with the constraint ear in the fixed state to compress and store force on the spring. At the same time, the traction ring cooperates with the rotation of the traction groove to pull the rotating shaft tube and the crushing roller to slide in the direction close to the driving part, thereby ensuring that the two groups of crushing rollers in the chassis slide slowly outward during the rotational crushing process, so as to squeeze the materials between the adjacent crushing teeth on the outer circumference of the two groups of crushing rollers, and crush the materials in cooperation with the rotation action of the two groups of crushing rollers;

[0018] c. When the drive shaft rotates until the roller is separated from the bevel section, the energy storage process of the spring is completed, and then the drive shaft continues to rotate, and the roller rolls to the straight section of the swing groove. Since the supporting effect of the straight section on the roller disappears, the compressed spring stroke is released at this time, that is, the spring pushes the sliding ear to drive the traction ring, the slide rod and the wheel frame seat to reset, and the roller is quickly pressed into the junction of the straight section and the bevel section. At the same time, the traction ring supports the shaft tube to drive the crushing roller to rebound and slide rapidly in the opposite direction, and then the crushing teeth on the two sets of crushing rollers are quickly reset to impact the materials therein, so that the two sets of crushing rollers can achieve slow extrusion energy storage and rapid reset impact action during the rotating crushing process;

[0019] d. When the material cannot pass through the gap between the top sides of the two sets of crushing rollers and the crushing rollers are stuck, the crushing rollers are stuck and cannot continue to rotate. At this time, the active teeth at the end of the driving shaft inside the separator continue to rotate. Since the crushing rollers, the transmission rod and the separation shaft are all stuck and cannot continue to rotate, the active teeth of the helical tooth structure push the driven teeth away from the driving part, thereby pushing the driven teeth and the separation shaft in the direction of the compression spring, and then releasing the transmission state of the active teeth and the driven teeth, avoiding overload damage to the motor caused by the crushing roller being stuck inside;

[0020] e. When the crushing roller is stuck and the internal transmission state of the synchronizer is separated, the crushing roller cannot continue to rotate. The swing frame continues to pull the crushing roller to slide back and forth longitudinally on the outside of the transmission rod under the support of the rotating drive shaft to maintain the normal operation of the extrusion energy storage action and the reset impact action of the two sets of crushing rollers, and then actively hit and squeeze the material that causes the stuck state, thereby promoting the crushing of the material. When the material is impacted and crushed to the point where it can pass through the gap between the two sets of crushing rollers, the active teeth and driven teeth in the separator that are continuously staggered re-engage under the action of the compression spring, thereby automatically restoring the rotating crushing action of the crushing roller.

[0021] The beneficial effects are as follows: 1. The present invention provides two sets of crushing rollers that are arranged in parallel and can slide along the axial direction, and adds axial movement during the crushing process of the crushing rollers to increase the bite and squeeze action of the crushing teeth of the adjacent crushing rollers, thereby increasing the inter-tooth crushing function on the traditional double-tooth roller crusher's rotary crushing function and accelerating the crushing speed;

[0022] 2. In addition, the axial crushing action of the crushing roller is decomposed into a slow extrusion energy storage process and a fast release impact process, which promotes the refinement of fragile materials during the extrusion process and crushes high-hardness materials during the impact process to improve the crushing effect;

[0023] 3. A synchronizer is set up as an overload protection mechanism. The active teeth and driven teeth of the helical tooth structure in the synchronizer are used as a clutch mechanism. When the crushing roller is stuck and stopped by a large volume of materials, the transmission state with the drive shaft can be disconnected, so as to avoid the drive motor being stuck and overloaded and damaged. At the same time, after the synchronizer transmission is disconnected, the axial reciprocating extrusion and impact action of the crushing roller are maintained, so as to crush and remove the stuck material, so as to contact the stuck state of the crushing roller, and actively restore the rotating crushing action, without the need to manually remove the stuck material, thereby improving the cleanliness between the crushing teeth and reducing the equipment failure rate and maintenance rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a right view structural diagram of the present invention;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 3 It is a main structural diagram of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the crushing roller of the present invention;

[0029] Figure 5 It is a schematic diagram of the partial structure disassembly of the crushing roller of the present invention;

[0030] Figure 6 It is a schematic diagram of the structural disassembly of the crushing roller of the present invention;

[0031] Figure 7 It is a schematic diagram of the structural disassembly of the swing frame of the present invention;

[0032] Figure 8 It is a schematic diagram of the structural disassembly of the synchronizer of the present invention;

[0033] Fig. 9 It is a three-dimensional structural schematic diagram of the drive shaft of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the crushing roller of the present invention in another direction;

[0035] Fig.11 is a schematic diagram of the three-dimensional structure of the synchronizer of the present invention in another direction;

[0036] Fig.12 It is a top view of the structure of the crushing roller assembly state of the present invention;

[0037] Fig.13 It is a three-dimensional structural schematic diagram of the crushing roller assembly state of the present invention;

[0038] Fig.14 It is a front view structural diagram of the crushing roller of the present invention.

[0039] The following are the descriptions of the reference numerals:

[0040] 1. Machine body; 2. Machine case; 3. Crushing roller; 301. Shaft tube; 301a. Transmission groove; 302. Traction groove; 303. Crushing tooth; 4. Transmission rod; 401. Fixing hole; 5. Synchronizer; 501. Half shell cover; 501a. Observation hole; 502. Separation shaft; 502a. Pressure ring; 503. Rotating ring; 504. Fixed ring; 505. Driven tooth; 506. Compression spring; 6. Swing frame; 601. Mounting ring; 601a. ​​Mounting hole ; 602, restraining ear; 603, spring; 604, traction ring; 604a, sliding ear; 605, wheel frame seat; 606, slide rod; 606a, mounting nut; 607, wheel axle; 608, roller; 7, driving unit; 8, driving shaft; 801, swinging groove; 801a, bevel section; 801b, straight section; 802, transmission flange; 803, driving gear; 9, tail cover; 901, power terminal; 10, feed cover; 11, universal shaft. DETAILED DESCRIPTION

[0041] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0042] See also Figure 1-Figure 14 As shown, the present invention provides a high-calcium stone double-toothed roller crusher resistant to the impact of large blocks of stone, comprising a body 1, a chassis 2 and two groups of crushing rollers 3, wherein the chassis 2 is fixed to the top of the body 1, and the two groups of crushing rollers 3 are arranged in parallel inside the chassis 2, and further comprising two transmission rods 4, which penetrate the crushing rollers 3 along the axis of the crushing rollers 3, and the outer side of the end of the transmission rod 4 outside the body 1 is provided with a swing frame 6 for supporting the longitudinal reciprocating sliding of the crushing rollers 3, and the transmission rod 4 can support the rotation of the crushing rollers 3 and can keep the crushing rollers 3 slidingly matched with the transmission rod 4 in the axial direction;

[0043] Specifically, a shaft tube 301 extending out of the machine body 1 is coaxially fixed to the outer end surface of the crushing roller 3, a regular polygonal transmission groove 301a is longitudinally penetrated through the middle of the shaft tube 301, the transmission rod 4 passes through the transmission groove 301a and slides with the transmission groove 301a, the outer circumferential side of the crushing roller 3 is densely covered with crushing teeth 303, and the crushing teeth 303 of the two groups of crushing rollers 3 are arranged in a ring shape and staggered front and back, and the crushing teeth 303 of the two groups of crushing rollers 3 can reciprocate and approach to achieve bite during the axial sliding process, so as to utilize the crushing teeth 303 to achieve the axial shear impact crushing function of the material.

[0044] As an optional embodiment, a traction groove 302 with a circular groove structure is provided on the outer circumferential side of one end of the shaft tube 301 close to the swing frame 6, a drive shaft 8 is provided on the outer side of the swing frame 6, and two groups of driving parts 7 supporting the rotation of the drive shaft 8 are provided at the front and rear of the body 1 corresponding to the two groups of crushing rollers 3, wherein a universal shaft 11 is connected between one group of driving parts 7 and the drive shaft 8 to ensure that the spacing between the two adjacent groups of crushing rollers 3 is adjustable, and this structure is a prior art in the field and will not be described in detail here;

[0045] The swing frame 6 includes a mounting ring 601 fixed to the outside of the machine body 1 by bolts, ensuring that the swing frame 6 as a whole will not rotate with the drive shaft 8. The outer circumferential side of the mounting ring 601 is surrounded and fixed with multiple groups of restraining ears 602 extending horizontally outward. The outer ends of the restraining ears 602 are longitudinally penetrated by sliding rods 606. The middle of the multiple groups of restraining ears 602 is provided with a traction ring 604. The traction ring 604 is sleeved in the traction groove 302 of the shaft tube 301 at the outer end of the crushing roller 3, and the traction ring 604 is connected to the shaft through the traction groove 302. The tube 301 is rotated to cooperate, and the outer end of the traction ring 604 is provided with multiple sets of sliding ears 604a corresponding to the constraint ears 602, and the sliding rod 606 passes through the sliding ears 604a and cooperates with the sliding ears 604a with clearance, and a thrust bearing supporting the traction ring 604 is provided inside the traction groove 302, and multiple sliding rods 606 extend out of the constraint ears 602 and are fixed with a wheel frame seat 605 sleeved on the outside of the drive shaft 8 at one end, and the wheel frame seat 605 is a circular ring structure, and multiple sets of swing grooves 801 are arranged around the outer circumference of the drive shaft 8;

[0046] Specifically, the swing groove 801 includes an obliquely extending beveled section 801a and a straight section 801b extending in a straight line. The connection between the beveled section 801a and the straight section 801b is a semicircular groove structure. The extending direction of the beveled section 801a is opposite to the rotating direction of the crushing roller 3. A plurality of wheel axles 607 are rotatably arranged in the middle of the wheel frame seat 605. The wheel axles 607 extend radially along the driving shaft 8, and the ends of the wheel axles 607 are rotatably arranged with rollers 608 that can extend into the swing groove 801.

[0047] It must be pointed out that the end of the slide rod 606 away from the wheel frame seat 605 is threadedly matched with a mounting nut 606a to ensure that when the roller 608 contacts the bevel section 801a, the sliding ear 604a can be pulled outward by the slide rod 606 and the mounting nut 606a, and then the shaft tube 301 and the crushing roller 3 are pulled outward by the traction ring 604, so as to realize the axial reciprocating sliding action of the crushing roller 3, and the slide rod 606 on the inner side of the constraint ear 602 is provided with a spring 603 that presses against the traction ring 604, and the spring 603 keeps the roller 608 pressed against the swing groove 801 of the drive shaft 8, and the compression stroke of the spring 603 is greater than the depth of the swing groove 801, and the end face of the mounting ring 601 is penetrated by a mounting hole 601a for fixing the body 1 with bolts.

[0048] A synchronizer 5 is connected between the drive shaft 8 and the transmission rod 4. The synchronizer 5 serves as a transmission connection mechanism between the drive shaft 8 and the transmission rod 4. When the crushing roller 3 is stuck and stops due to a large piece of material, the transmission state between the drive shaft 8 and the transmission rod 4 can be disconnected. After the large piece of material is crushed by the continuous reciprocating impact action of the crushing roller 3, the synchronizer 5 can automatically restore the rotation action of the crushing roller 3. A transmission flange 802 is fixed on the outer end surface of the drive shaft 8.

[0049] Specifically, the synchronizer 5 includes two groups of semi-cylindrical half-shell covers 501 that cover each other. The middle parts of the two groups of half-shell covers 501 are penetrated with observation holes 501a. The half-shell covers 501 are fixedly connected to the end faces of the drive shaft 8. One end of the drive shaft 8 extending into the half-shell cover 501 is surrounded and fixed with multiple groups of active teeth 803 with helical teeth structure. The inclination direction of the active teeth 803 is opposite to the rotation direction of the transmission rod 4 and the crushing roller 3. A rotating ring 503 is rotatably arranged at one end of the half-shell cover 501 away from the drive shaft 8. A separation shaft 502 is gap-matched in the middle part of the rotating ring 503. The end face of the separation shaft 502 is fixed with a driven tooth 505 that can bite the active tooth 803. A pressure ring 502a is fixed on the outside of the separation shaft 502 between the driven tooth 505 and the rotating ring 503. A compression spring 506 is sleeved on the outside of the separation shaft 502 between the pressure ring 502a and the rotating ring 503. The compression spring 506 keeps the driven tooth 505 and the active tooth 803 tightly engaged, ensuring that the transmission connection function of the synchronizer 5 on the drive shaft 8 and the transmission rod 4 is maintained when the crushing roller 3 is not stuck. After the stuck state of the crushing roller 3 disappears, the compression spring 506 in the compressed state pushes the pressure ring 502a to reset the driven tooth 505 to the position of engaging the active tooth 803, so as to realize the recovery of the rotation of the crushing roller 3 and the separation shaft 502 A fixing ring 504 is fixed to one end of the extended half shell 501, a fixing hole 401 is provided at one end of the transmission rod 4 near the synchronizer 5, a bolt is passed through the fixing ring 504 and extends into the fixing hole 401 to tighten the transmission rod 4, a tail cover 9 fixed to the outside of the machine body 1 is provided at the other end of the transmission rod 4, a feed cover 10 with a built-in gate valve is provided at the top opening of the chassis 2, the gate valve is an electric valve, a proximity switch is provided on the inside of the tail cover 9, and an electric terminal 901 electrically connected to the gate valve is provided on the outside of the tail cover 9. When the crushing roller 3 is stuck by a large piece of material, the active tooth 803 inside the separator pushes the driven tooth 505 to maintain the separation state, and the driven tooth 505 The separation shaft 502 slides away from the drive shaft 8, the compression spring 506 is compressed, the separation shaft 502 pushes the transmission rod 4 to slide away from the drive shaft 8, and then presses the outer end of the transmission rod 4 into the tail cover 9, and the end of the transmission rod 4 contacts the proximity switch to turn on the gate valve circuit to close the gate valve in the feed cover 10, preventing the material from further falling into the crushing area in the chassis 2, thereby avoiding further aggravation of the jamming state of the crushing roller 3. When the jammed material is crushed by the axial impact action, the separation shaft 502 pulls the transmission rod 4 to reset under the action of the compression spring 506, the proximity switch is powered off, the gate valve is opened, and the feeding channel of the feed cover 10 is restored.

[0050] The method for using the high calcium stone double-toothed roller crusher that can withstand the impact of large stones includes the following steps:

[0051] a. When crushing materials, large pieces of materials are fed into the chassis 2 along the feed cover 10 of the opening of the chassis 2. The materials gather above the intersection of the top sides of the two groups of crushing rollers 3. The driving part 7 drives the driving shaft 8 to rotate. The driving shaft 8 uses the bite action of the driving teeth 803 and the driven teeth 505 inside the synchronizer 5 to transmit the rotational power of the driving shaft 8 to the transmission rod 4 through the synchronizer 5. The transmission rod 4 drives the shaft 8 tube 301 to drive the crushing rollers 3 to rotate, so as to realize the extrusion and crushing of materials by utilizing the reverse rotation of the two groups of crushing rollers 3;

[0052] b. During the rotation of the drive shaft 8, the pressure wheel pressed into the swing groove 801 on the outer side of the drive shaft 8 is pressed by the swing groove 801. When the drive shaft 8 rotates to the point where the bevel section 801a is pressed against the roller 608, the multiple groups of rollers 608 move away from the machine body 1 under the support of the wheel frame seat 605 and the wheel axle 607. At the same time, under the sliding guide effect of the constraint ear 602 on the slide bar 606, the wheel frame seat 605 drives the multiple slide bars 606 to pull the traction ring 604 to slide synchronously. At the same time, the traction ring 604 in the outward sliding state is used to slide. 04 cooperates with the restraining ear 602 in the fixed state to compress and store force on the spring 603. At the same time, the traction ring 604 cooperates with the rotation of the traction groove 302 to pull the rotating shaft tube 301 and the crushing roller 3 to slide toward the driving part 7, thereby ensuring that the two groups of crushing rollers 3 in the chassis 2 slowly slide outward during the rotation crushing process, so as to squeeze the materials between the adjacent crushing teeth 303 on the outer circumference of the two groups of crushing rollers 3, and crush the materials in cooperation with the rotation of the two groups of crushing rollers 3;

[0053] c. When the drive shaft 8 rotates until the roller 608 is separated from the bevel section 801a, the energy storage process of the spring 603 is completed, and then the drive shaft 8 continues to rotate, and the roller 608 rolls to the straight section 801b of the swing groove 801. Since the support effect of the straight section 801b on the roller 608 disappears, the stroke of the compressed spring 603 is released, that is, the spring 603 pushes the sliding ear 604a to drive the traction ring 604, the slide bar 606 and the wheel frame seat 605 to reset, and the roller 608 is quickly pressed into the junction of the straight section 801b and the bevel section 801a. At the same time, the traction ring 604 supports the shaft tube 301 to drive the crushing roller 3 to quickly rebound and slide in the opposite direction, and then the crushing teeth 303 on the two groups of crushing rollers 3 are quickly reset to impact the materials therein, so that the two groups of crushing rollers 3 can achieve slow extrusion energy storage and rapid reset impact action during the rotation crushing process;

[0054] d. When the material cannot pass through the gap between the top sides of the two groups of crushing rollers 3 and the crushing rollers 3 are stuck, the crushing rollers 3 are stuck and cannot continue to rotate. At this time, the active teeth 803 at the end of the driving shaft 8 inside the separator continue to rotate. Since the crushing rollers 3, the transmission rod 4 and the separation shaft 502 are all stuck and cannot continue to rotate, the active teeth 803 of the helical tooth structure push the driven teeth 505 away from the driving part 7, thereby pushing the driven teeth 505 and the separation shaft 502 toward the compression spring 506, and then releasing the transmission state between the active teeth 803 and the driven teeth 505, avoiding overload damage to the motor caused by the crushing roller 3 being stuck inside;

[0055] e. When the crushing roller 3 is stuck and the transmission state inside the synchronizer 5 is separated, the crushing roller 3 cannot continue to rotate. The swing frame 6 continues to pull the crushing roller 3 to slide back and forth longitudinally on the outside of the transmission rod 4 under the support of the rotating drive shaft 8, so as to maintain the normal operation of the extrusion energy storage action and the reset impact action of the two sets of crushing rollers 3, and then actively hit and squeeze the material that causes the stuck state, so as to promote the crushing of the material. When the material is impacted and crushed to the point where it can pass through the gap between the two sets of crushing rollers 3, the active teeth 803 and the driven teeth 505 in the separator that are continuously staggered re-engage under the action of the compression spring 506, thereby automatically restoring the rotating crushing action of the crushing roller 3.

[0056] Two sets of crushing rollers 3 are arranged in parallel and can slide along the axial direction. During the rotating crushing process of the crushing rollers 3, axial movement is added to increase the biting and squeezing action of the crushing teeth 303 of the adjacent crushing rollers 3, and the inter-tooth crushing function is added to the rotating crushing function of the traditional double-toothed roller crusher to speed up the crushing speed;

[0057] In addition, the axial crushing action of the crushing roller 3 is decomposed into a slow extrusion energy storage process and a fast release impact process, which promotes the refinement of fragile materials during the extrusion process and crushes high-hardness materials during the impact process, thereby improving the crushing effect;

[0058] A synchronizer 5 is provided as an overload protection mechanism, and the active teeth 803 and the driven teeth 505 of the helical tooth structure in the synchronizer 5 are used as a clutch mechanism. When the crushing roller 3 is stuck and stops rotating due to a large volume of material, the transmission state with the drive shaft 8 can be disconnected, so as to avoid the motor of the driving unit 7 being stuck and overloaded and damaged. At the same time, after the transmission of the synchronizer 5 is disconnected, the axial reciprocating extrusion and impact action of the crushing roller 3 are maintained, so as to crush and remove the stuck material, so as to contact the stuck state of the crushing roller 3, and actively restore the rotating crushing action, without the need to manually remove the stuck material, thereby improving the cleanliness between the crushing teeth 303 and reducing the equipment failure rate and maintenance rate.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high-calcium double-toothed roller crusher resistant to the impact of large stones, comprising a body (1), a chassis (2) and two sets of crushing rollers (3), wherein the chassis (2) is fixed to the top of the body (1), and the two sets of crushing rollers (3) are arranged in parallel inside the chassis (2), characterized in that: It also comprises two transmission rods (4), the transmission rods (4) passing through the crushing roller (3) along the axis of the crushing roller (3), and a swing frame (6) for supporting the crushing roller (3) to slide back and forth in the longitudinal direction is arranged on the outer side of the end of the transmission rod (4) outside the machine body (1); The outer end surface of the crushing roller (3) is coaxially fixed with a shaft tube (301) extending out of the machine body (1), and a regular polygonal transmission groove (301a) is longitudinally penetrated through the middle of the shaft tube (301), and the transmission rod (4) passes through the transmission groove (301a) and is slidably matched with the transmission groove (301a). The outer circumference of the crushing roller (3) is densely covered with crushing teeth (303), and the crushing teeth (303) of the two groups of crushing rollers (3) are arranged in a ring shape and staggered in front and back.

2. According to claim 1, a high-calcium double-toothed roller crusher resistant to the impact of large stones is characterized by: A traction groove (302) with a circular groove structure is arranged on the outer circumferential side of one end of the shaft tube (301) close to the swing frame (6), a drive shaft (8) is arranged on the outside of the swing frame (6), and two groups of drive parts (7) supporting the rotation of the drive shaft (8) are arranged at the front and rear of the machine body (1) corresponding to the two groups of crushing rollers (3).

3. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 2, characterized in that: The swing frame (6) comprises a mounting ring (601) fixed to the outside of the body (1), and a plurality of groups of restraining ears (602) extending outward horizontally are fixed around the outer circumference of the mounting ring (601), and a sliding rod (606) is longitudinally penetrated through the outer end of the restraining ear (602), and a traction ring (604) is arranged in the middle of the plurality of groups of restraining ears (602), and the traction ring (604) is sleeved in the traction groove (302) of the shaft tube (301) at the outer end of the crushing roller (3), and the traction ring (604) is rotatably matched with the shaft tube (301) through the traction groove (302), and a plurality of groups of sliding ears (604a) are arranged at the outer end of the traction ring (604) corresponding to the restraining ears (602), and the sliding rod (606) penetrates the sliding ear (604a) and is clearance-matched with the sliding ear (604a).

4. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 3, characterized in that: A thrust bearing supporting the traction ring (604) is arranged inside the traction groove (302); a plurality of slide rods (606) extend out of the restraining ear (602) and are fixed with a wheel frame seat (605) sleeved on the outside of the drive shaft (8) at one end; the wheel frame seat (605) is a circular ring structure; and a plurality of swing grooves (801) are arranged around the outer circumference of the drive shaft (8).

5. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 4, characterized in that: The swing groove (801) comprises an inclined bevel section (801a) and a straight section (801b) extending in a straight line, the connection between the inclined section (801a) and the straight section (801b) presents a semicircular groove structure, a plurality of sets of axles (607) are rotatably arranged in the middle of the wheel frame seat (605), the axles (607) extend radially along the drive shaft (8), and a roller (608) capable of extending into the swing groove (801) is rotatably arranged at the end of the axle (607).

6. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 5, characterized in that: The end of the slide rod (606) away from the wheel frame seat (605) is threadedly matched with a mounting nut (606a), and the slide rod (606) on the inner side of the restraining ear (602) is provided with a spring (603) pressed against the traction ring (604), and the spring (603) keeps the roller (608) and the swing groove (801) of the drive shaft (8) pressed against each other, and the compression stroke of the spring (603) is greater than the depth of the swing groove (801), and the end surface of the mounting ring (601) is penetrated by a mounting hole (601a) through which a bolt is fixedly connected to the machine body (1).

7. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 1, characterized in that: A synchronizer (5) is connected in transmission between the drive shaft (8) and the transmission rod (4); a transmission flange (802) is fixed to the outer end surface of the drive shaft (8); the synchronizer (5) comprises two groups of semi-cylindrical half shells (501) covering each other, and observation holes (501a) are penetrated in the middle of the two groups of half shells (501).

8. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 7, characterized in that: The half shell cover (501) is fixedly connected to the end face of the driving shaft (8); one end of the driving shaft (8) extending into the half shell cover (501) is surrounded and fixed with a plurality of groups of active teeth (803) with a helical tooth structure; the inclination direction of the active teeth (803) is opposite to the rotation direction of the transmission rod (4) and the crushing roller (3); a rotating ring (503) is rotatably arranged at one end of the half shell cover (501) away from the driving shaft (8); a separation shaft (502) is gap-fitted in the middle of the rotating ring (503); and a driven tooth (505) capable of engaging with the active tooth (803) is fixed on the end face of the separation shaft (502).

9. The high calcium stone double-toothed roller crusher resistant to the impact of large stones according to claim 8, characterized in that: A pressure ring (502a) is fixed on the outside of the separation shaft (502) between the driven tooth (505) and the rotating ring (503), and a compression spring (506) is sleeved on the outside of the separation shaft (502) between the pressure ring (502a) and the rotating ring (503). The compression spring (506) keeps the driven tooth (505) and the driving tooth (803) in close engagement. A fixing ring (504) is fixed on one end of the separation shaft (502) extending out of the half-shell cover (501). A fixing hole (401) is provided on one end of the transmission rod (4) close to the synchronizer (5). Bolts are passed through the fixing ring (504) and extend into the fixing hole (401) to fasten the transmission rod (4). A tail cover (9) fixed to the outside of the machine body (1) is provided on the other end of the transmission rod (4). A feed cover (10) with a built-in gate valve is provided at the top opening of the chassis (2).

10. The method for using the high-calcium double-toothed roller crusher capable of resisting the impact of large stones according to claim 9, characterized in that: The following steps are involved: a. When crushing materials, large pieces of materials are fed into the machine case (2) through the feed cover (10) of the opening of the machine case (2), and the materials are gathered above the intersection of the top sides of the two sets of crushing rollers (3). The driving part (7) drives the driving shaft (8) to rotate, and the driving shaft (8) utilizes the bite action of the driving teeth (803) and the driven teeth (505) inside the synchronizer (5) to transmit the rotational power of the driving shaft (8) to the transmission rod (4) through the synchronizer (5). The transmission rod (4) drives the shaft (8) tube (301) to drive the crushing rollers (3) to rotate, so that the two sets of crushing rollers (3) rotate in opposite directions to achieve material extrusion and crushing; b. During the rotation of the drive shaft (8), the pressure wheel pressed into the swing groove (801) outside the drive shaft (8) is pressed by the swing groove (801). When the drive shaft (8) rotates to the point where the bevel section (801a) abuts against the roller (608), the plurality of rollers (608) move away from the machine body (1) under the support of the wheel frame seat (605) and the wheel axle (607). At the same time, under the sliding guiding effect of the constraint ear (602) on the slide rod (606), the wheel frame seat (605) drives the plurality of slide rods (606) to pull the traction ring (604) to slide synchronously. At the same time, the traction in the outward sliding state is used. The ring (604) cooperates with the restraining ear (602) in a fixed state to compress and store force on the spring (603). At the same time, the traction ring (604) cooperates with the rotation of the traction groove (302) to pull the rotating shaft tube (301) and the crushing roller (3) to slide in the direction close to the driving part (7), thereby ensuring that the two groups of crushing rollers (3) in the chassis (2) slowly slide outward during the rotational crushing process, so as to squeeze the materials between the adjacent crushing teeth (303) on the outer circumference of the two groups of crushing rollers (3), and crush the materials in cooperation with the rotation of the two groups of crushing rollers (3); c. When the driving shaft (8) rotates until the roller (608) is separated from the beveled edge section (801a), the energy storage process of the spring (603) is completed, and then the driving shaft (88) continues to rotate, and the roller (608) rolls to the straight edge section (801b) of the swing groove (801). Since the supporting effect of the straight edge section (801b) on the roller (608) disappears, the travel of the spring (603) in the compressed state is released, that is, the spring (603) pushes the sliding ear (604a) to drive the traction ring (604) and the sliding ear (604a) to move. The rod (606) and the wheel frame seat (605) are reset, and the roller (608) is quickly pressed into the junction of the straight edge section (801b) and the oblique edge section (801a). At the same time, the traction ring (604) supports the shaft tube (301) to drive the crushing roller (3) to quickly rebound and slide in the opposite direction, and then the crushing teeth (303) on the two groups of crushing rollers (3) are quickly reset to impact the materials therein, so that the two groups of crushing rollers (3) can achieve slow extrusion energy storage and rapid reset impact action during the rotational crushing process; d. When the material cannot pass through the gap between the top sides of the two sets of crushing rollers (3) and the crushing rollers (3) are stuck, the crushing rollers (3) are stuck and cannot continue to rotate. At this time, the active teeth (803) at the end of the driving shaft (8) inside the separator continue to rotate. Since the crushing rollers (3), the transmission rod (4) and the separation shaft (502) are all stuck and cannot continue to rotate, the active teeth (803) of the helical tooth structure push the driven teeth (505) away from the driving part (7), thereby pushing the driven teeth (505) and the separation shaft (502) in the direction of the compression spring (506), and then releasing the transmission state between the active teeth (803) and the driven teeth (505), thereby avoiding overload damage to the motor caused by the crushing roller (3) being stuck inside; e. When the crushing roller (3) is stuck and the transmission state inside the synchronizer (5) is separated, the crushing roller (3) cannot continue to rotate. The swing frame (6) continues to pull the crushing roller (3) to slide back and forth longitudinally on the outer side of the transmission rod (4) under the support of the rotating drive shaft (8), so as to maintain the normal operation of the extrusion energy storage action and the reset impact action of the two sets of crushing rollers (3), and then actively hit and squeeze the material that causes the stuck state, so as to promote the crushing of the material. When the material is impacted and crushed to the point where it can pass through the gap between the two sets of crushing rollers (3), the active teeth (803) and the driven teeth (505) in the separator that are continuously staggered re-engage under the action of the compression spring (506), so as to automatically restore the rotating crushing action of the crushing roller (3).

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