CN114308216B

CN114308216B - Double-roller sand making machine capable of eliminating blocking and fixing rolling leather by friction

Info

Publication number: CN114308216B
Application number: CN202111511669.3A
Authority: CN
Inventors: 祝光云; 祝鹤槐
Original assignee: Zhejiang Chentai Machinery Manufacturing Co ltd
Current assignee: Zhejiang Chentai Machinery Manufacturing Co ltd
Priority date: 2021-12-11
Filing date: 2021-12-11
Publication date: 2023-04-07
Anticipated expiration: 2041-12-11
Also published as: CN114308216A

Abstract

The invention relates to a pair-roller sand making machine capable of eliminating jamming and fixing a roller sheet by friction, which comprises a rack, a control unit and a counter, wherein the rack is provided with two grinding rollers and a driving motor, each grinding roller comprises a grinding roller and a main shaft, the grinding rollers are connected with the rack through the main shafts, a grinding gap is formed between the two grinding rollers, each grinding roller comprises an outer roller and an inner roller, the opening of the outer roller is circular, the inner roller is cylindrical and coaxial with the outer roller, the outer roller and the inner roller are fixed together through a friction braking rotation stopping mechanism, the outer roller and the inner roller can rotate relatively when the two grinding rollers are jammed by stones in the process of grinding stones, and the grinding rollers are provided with a slippage detection mechanism. The invention has the advantage that the crushing roller can be eliminated without being separated when the feed is blocked, and is used for solving the problem that the separation of the crushing roller to eliminate the feed blockage can cause stone with unqualified granularity to be mixed into the crushed sand.

Description

Double-roller sand making machine capable of eliminating blocking and fixing rolling leather by friction

Technical Field

The invention relates to a sand making machine, in particular to a pair-roller sand making machine capable of eliminating blocking and fixing a rolling skin by friction.

Background

A sand maker is a mechanical device used to crush stone into sand. The structure of the sand making machine has two types, one is a hammer crusher, the other is a double-roller machine (hereinafter referred to as a double-roller sand making machine), the hammer crusher has many wearing parts, large energy consumption, much dust and uneven fineness. The roller pair sand making machine can avoid the defects of much dust and uneven fineness. The patent documents of Chinese patent No. 2010202399225, publication No. CN201791554U and name of 'driving mechanism of double-roller sand making machine' disclose a double-roller sand making machine, the crushing of stones into sand by the double-roller sand making machine is realized by rolling a pair of crushing rollers (also called rollers), the initial crushing roller of the double-roller sand making machine is realized by arranging a chain wheel at one end of the crushing roller, and then the chain wheel is driven by the chain after the motor output is decelerated by a speed reducer, so that the rotation is realized, and the defects of poor efficiency, large abrasion, small bearing capacity, small impact resistance, large vibration and appearance volume and short continuous operation life exist; the present applicant has designed an internal drive double roll sand mill as disclosed in patent application No. 2016101635735 for this purpose. The sand making machine in the patent has the following defects: the phenomenon that the crushed stones cannot rotate when being clamped can be encountered in the crushing process, if the stones causing the jamming are transposed when the jamming is generated, feeding and rolling are carried out again, the jamming can be eliminated, the existing method for eliminating the jamming is to fix a crushing roller together with a rack through an air cylinder, the jamming force drives the air cylinder to compress to provide the separated interval (namely, the crushing interval is widened) of the crushing roller when the jamming is generated, and the jamming solving mode can cause the granularity of the sands to exceed the requirement although manual dredging is carried out without stopping.

Disclosure of Invention

The invention aims to provide a pair-roller sand making machine with a friction fixed roller skin, which can eliminate jamming without separating a crushing roller when the jamming is generated in feeding, and is used for solving the problem that the stone with the granularity not meeting the requirement can be mixed into the crushed sand when the crushing roller is separated to eliminate the jamming in feeding.

The technical problem is solved by the following technical scheme: the utility model provides a pair roller system sand machine of fixed roll skin of friction that can eliminate card and hinder, includes the frame, the frame is provided with two crushing drums and drive crushing drum pivoted driving motor, crushing drum includes grinding barrel and main shaft, grinding barrel cover establish and rotate connect in the main shaft, crushing drum passes through the main shaft with the frame links together, forms the rolling clearance between two grinding barrels, grinding barrel includes outer roller and the interior roll body that links together can be dismantled with outer roller that is located outer roller, its characterized in that still includes the control unit and counter, the opening shape of outer roller is circular, interior roll body is the cylindricality coaxial with outer roller, outer roller and interior roll body are together fixed through the mechanism that splines of friction braking, can produce relative rotation between outer roller and the interior roll body when two grinding barrels carry out the in-process of grinding the building stones and are blocked by the building stones, whether be equipped with on the crushing roller and detect the detection mechanism that skids that whether produces the phenomenon of skidding between interior roll body and the outer roll body, actuating mechanism includes driving motor, the detection mechanism that skids includes busbar, uide bushing, cam, ejector pin, break away from structure and two conducting rings, the conducting ring distributes along the axial of crushing roller, cam and conducting ring are all coaxial with the crushing roller, the cam is together fixed with interior roll body, the uide bushing is together fixed with the outer roll body, the ejector pin is along the radial extension of crushing roller and wear to establish in the uide bushing, the one end of ejector pin links together with the busbar, the other end aligns with the cam, the busbar aligns simultaneously with two conducting rings, ejector pin drive busbar is simultaneously butt on two conducting rings and make two conducting rings switch on when the bellying of cam is supported to the ejector pin, the break away from the structure and be used for driving the ejector pin to remove the drive busbar and conduct with the conducting ring when the bellying of ejector pin staggers with the cam The ring is separated, the conducting ring is fixed with the rack, and the driving motor, the counter and the conducting ring are electrically connected with the control unit; in the process of crushing stone by driving the crushing roller through forward rotation of the driving motor, when the conducting ring is separated from the conducting strip, the counter starts to record the conducting times N of the conducting strip and the conducting ring, when the N reaches a set value, the control device enables the driving motor to rotate reversely for a set angle and then stops rotating for a set time, and then the timer resets when the driving motor rotates reversely. Whether the jamming is generated can be automatically known, after the jamming is generated, the slipping detection mechanism can be reset, and the reverse rotation can be generated to enable the jamming stones to move and loosen, so that the jamming is not generated until the normal smashing is carried out.

Preferably, an annular connecting groove which extends along the circumferential direction of the inner roller body and is positioned on the end face of the rolling cylinder is arranged between the two ends of the outer roller and the inner roller body, and the rotation stopping mechanism is arranged in the connecting groove; the rotation stopping structure comprises an inner extrusion ring and an outer extrusion ring which are sleeved on an inner roller body, the outer end of the inner extrusion is provided with an inner extrusion ring part conical surface section, the outer peripheral surface of the inner extrusion ring part conical surface section is a conical surface with a large inner end and a small outer end, the inner peripheral surface of the inner extrusion ring part conical surface section is a conical surface with a small inner end and a large outer end, the inner end of the outer extrusion ring is provided with an outer extrusion ring part conical surface section, the outer peripheral surface of the outer extrusion ring part conical surface section is a conical surface with a small inner end and a large outer end, the inner extrusion ring is provided with a plurality of inner extrusion ring part threaded holes which are distributed along the circumferential direction of the inner extrusion ring and extend axially, the outer extrusion ring is provided with a plurality of outer extrusion ring part bolt holes which are distributed along the circumferential direction of the outer extrusion ring and extend axially, the inner and outer extrusion ring structure is characterized in that a plurality of outer extrusion strips are arranged in the connecting groove, the two ends of the outer extrusion strips are circumferentially distributed along the connecting groove and respectively supported on the outer peripheral surface of the conical section of the inner extrusion ring portion and the outer peripheral surface of the conical section of the outer extrusion ring portion, a plurality of inner extrusion strips are arranged in the connecting groove, the two ends of the inner extrusion strips are circumferentially distributed along the connecting groove and respectively supported on the inner peripheral surface of the conical section of the inner extrusion ring portion and the inner peripheral surface of the conical section of the outer extrusion ring portion, a plurality of tensioning screws penetrate through the bolt holes of the outer extrusion ring portion in a one-to-one correspondence manner and are threaded in the threaded holes of the inner extrusion ring portion in a one-to-one correspondence manner, the outer extrusion strips are abutted with the inner peripheral surface of an outer roller under the extrusion action of the inner extrusion ring and the inner extrusion strips, and the outer peripheral surface of an inner roller body is abutted with the inner extrusion strips. This technical scheme establishes back on interior roll body at outer cylinder cover, will only rotate the mechanism and pour into the spread groove into, then make inside and outside extrusion circle fold through rotating the tensioning screw, the result of folding is realized realizing the fixed of outer roller and interior roll body through frictional force for driving inside and outside extrusion strip supports tightly with interior roll body and outer roller, thereby need not to design outer roller and interior roll body for the tight fit, and this technical scheme locks and only need rotate the tensioning screw when loosening can, thereby it is laborsaving when outer roller and interior roll body are dismantled in the feasible assembly. The friction force is used for fixing, so that the force of the outer roller and the force of the inner roller body can be controlled conveniently.

Preferably, the outer extrusion strips and the outer peripheral surface of the conical surface section of the inner extrusion ring portion are in matched abutting connection, and the outer extrusion strips and the outer peripheral surface of the conical surface section of the outer extrusion ring portion are in matched abutting connection; the inner extrusion strip and the inner circumferential surface conical surface of the conical surface section of the inner extrusion ring portion are matched and abutted together, and the inner extrusion strip and the inner circumferential surface conical surface of the conical surface section of the outer extrusion ring portion are matched and abutted together. The abrasion between the extrusion ring and the extrusion strip during locking can be reduced.

Preferably, the inner circumferential surface of the outer roller is provided with a plurality of outer roller clamping grooves, and the outer extrusion strips are correspondingly arranged in the outer roller clamping grooves in a penetrating manner; the outer peripheral surface of the inner roller body is provided with a plurality of inner roller body part clamping grooves, and the inner extrusion strips penetrate through the inner roller body part clamping grooves in a one-to-one correspondence mode. The friction force transmission part for fixing the outer roller and the inner roller is controlled at the contact part of the extrusion ring and the extrusion strip, so that the friction force transmission part is convenient to replace and improve the convenience in manufacturing when being worn.

Preferably, an inner extrusion ring portion outer friction layer is arranged on the outer peripheral surface of the inner extrusion ring portion conical surface section, an inner extrusion ring portion inner friction layer is arranged on the inner peripheral surface of the inner extrusion ring portion conical surface section, an outer extrusion ring portion outer friction layer is arranged on the outer peripheral surface of the outer extrusion ring portion conical surface section, an outer extrusion ring portion inner friction layer is arranged on the inner peripheral surface of the outer extrusion ring portion conical surface section, an inner extrusion ring portion first friction layer which is connected with the inner extrusion ring portion inner friction layer in an abutting mode is arranged at one end of the inner extrusion strip, an inner extrusion ring portion second friction layer which is connected with the outer extrusion ring portion inner friction layer in an abutting mode is arranged at the other end of the outer extrusion strip, an outer extrusion strip portion first friction layer which is connected with the inner extrusion ring portion outer friction layer in an abutting mode is arranged at one end of the outer extrusion strip, and an outer extrusion strip portion second friction layer which is connected with the outer extrusion ring portion outer friction layer in an abutting mode is arranged at the other end of the outer extrusion strip. The control can be better controlled when the force for preventing the outer roller and the inner roller from generating relative rotation is controlled.

Preferably, the disengagement structure is a spring. The structure is simple and durable.

Preferably, one end of the spring is connected with the guide sleeve, and the other end of the spring is connected with the ejector rod.

Preferably, the spring is sleeved on the ejector rod, the ejector rod is provided with a supporting block, one end of the spring is abutted with the guide sleeve, and the other end of the spring is abutted with the supporting block. The structure is compact and good.

Preferably, the cam is an outer cam, the conductive strip is arranged in the conductive ring in a penetrating mode, and the supporting block is arranged at one end, facing the outer cam, of the ejector rod. The preparation is convenient.

Preferably, the two milling drums are staggered axially, and one conducting ring of the two conducting rings of the slip detection mechanism in the two milling drums and one milling drum is sleeved at one end of one milling drum extending out of the other milling drum. The slip detection mechanism can be arranged on the rolling cylinder on the premise that the structure of the rolling cylinder is not changed.

The invention also comprises a stone moving structure for moving the stone to be crushed between the two crushing rollers, and the stone moving structure moves the stone to be crushed between the two crushing rollers when the control device enables the driving motor to rotate reversely by a set angle and then stops. The efficiency of mediation card hinders when can improving the card hinders.

Preferably, the stone moving structure comprises a plurality of shifting pieces which are distributed along the axial direction of the crushing rollers and are positioned between the two crushing rollers and connected with the frame through a swing shaft, and a shifting piece driving mechanism for driving the shifting pieces to swing by taking the swing shaft as a shaft, wherein the swing shaft horizontally extends along the direction vertical to the crushing rollers. Provides a concrete technical proposal of the stone moving structure.

Preferably, a feeding hopper for conveying stone to the crushing rollers is arranged on the rack, a rectangular prism-shaped discharging pipe which extends into a space between the two crushing rollers and is of a flat structure is arranged on the feeding hopper, the length direction of the discharging pipe is consistent with the axial direction of the crushing rollers, the swing shaft is fixed on the outer surface of the discharging pipe, and the shifting sheet is suspended on the discharging pipe through the swing shaft. Compact structure nature is good, can drop the volume that gets into the building stones between two crushing roller for it is more laborsaving abundant to remove the building stones during the card hinders, thereby is convenient for can be fast to the quick whole removals of the building stones that lie in between the crushing roller body, in order to improve the efficiency when dredging the card and hindering.

Preferably, the swing shaft is composed of two half sections, the two half sections are connected to two sides of the blanking pipe, the poking piece is provided with two connecting lugs, and the two swing shafts penetrate through the two connecting lugs in a one-to-one correspondence mode and can be connected to the two connecting lugs in a rotating mode. The pick has good stability when being connected, and the joint is not easy to be damaged.

Preferably, the pendulum shaft is fixedly connected with the blanking pipe. When the shifting piece swings to damage, the blanking pipe cannot be damaged, and the blanking device is low in cost and convenient to maintain.

Preferably, the plectrum also includes the extension section that extends to in the unloading pipe, and the pendulum shaft is located between plectrum and the extension section. When the pendulum picked up building stones on the plectrum, the extension section pressed down building stones for the lower pendulum, and the interact of two continuous plectrums can make building stones produce more easily and roll, more can realize once stirring and whole aversion of building stones, and the mediation is efficient.

Preferably, the pick and the extension are located on the same surface. The effect of stirring to promote the stone to turn over is good.

Preferably, adjacent shifting pieces are spaced from the extension section on the other shifting piece along the axial direction of the crushing roller in the process that the shifting pieces rotate by taking the swing shaft as an axis. The anti-rotation reliability of the stone is good when the plectrum is pulled.

Preferably, when the shifting piece swings to the position with the largest angle, the distance between the extending sections of one shifting piece and the other shifting piece in the adjacent shifting pieces is less than 2 cm.

Preferably, the feed hopper is further provided with two baffle plates which are distributed along the axial direction of the crushing roller and are positioned at two ends of the blanking pipe, the baffle plates extend into the space between the two rolling cylinders, and the gap between the baffle plates and the outer roller is smaller than the granularity of stone materials to be crushed. The stones falling onto the two crushing rollers can be prevented from scattering without passing through the crushing gap.

Preferably, the driving mechanism of the shifting sheet comprises a rack extending along the axial direction of the crushing roller and a translation mechanism driving the rack to perform reciprocating translation along the extending direction of the rack, the shifting sheet is provided with a plurality of driving teeth distributed along the axial direction of the pendulum shaft and circumferentially distributed, and the driving teeth are meshed with the rack together. One set of actuating mechanism just can drive so plectrum, and this design can play supplementary plectrum and maintain vertical state when not stirring moreover.

Compared with the prior art, the method has the following beneficial effects: the outer roller and the inner roller body are fixed together through a radial opening structure, so that the outer roller and the inner roller body are convenient and labor-saving to assemble and disassemble; the outer roller and the inner roller are prevented from rotating relatively through friction force, the friction force is controlled to enable the torque for preventing the outer sleeve from rotating to be larger than the torque generated by the friction force when jamming occurs, so that the outer roller stops and only the inner roller rotates (namely slipping occurs between the outer roller and the inner roller) when jamming occurs, whether jamming occurs or not is judged through detecting whether slipping occurs or not, stone materials of the jamming are loosened through reversing when jamming occurs, then crushing is carried out, the jamming is eliminated, and manufactured sand is excessively large in particle size due to the fact that two crushing rollers are not required to be separated when jamming occurs; can remove the transposition to the building stones between the crushing roller body when the jam to dredge and eliminate the jam.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic side view of the crushing roller;

FIG. 3 is a schematic cross-sectional view of a crushing roll body;

FIG. 4 is an enlarged partial view of FIG. 3 at A;

FIG. 5 is a schematic front view illustrating a toggle lever in an initial state according to a second embodiment of the present invention;

FIG. 6 is a schematic enlarged view of a portion of FIG. 5 at B;

FIG. 7 is a schematic cross-sectional view C-C of FIG. 5;

FIG. 8 is an enlarged partial schematic view of FIG. 7 at D;

fig. 9 is a schematic front view of the second embodiment of the present invention when the shift lever swings to the limit position.

In the figure: the device comprises a grinding cylinder 1, a main shaft 2, a grinding gap 3, an outer roller 4, an inner roller 5, a connecting groove 8, a rotation stopping mechanism 9, an inner extrusion ring 10, an outer extrusion ring 11, an inner extrusion ring part conical surface section 12, an outer extrusion ring part conical surface section 13, an inner extrusion ring part threaded hole 14, an outer extrusion strip 15, an inner extrusion strip 16, a tensioning screw 17, an outer roller part clamping groove 18, an inner roller part clamping groove 19, an inner extrusion ring part outer friction layer 20, an inner extrusion ring part inner friction layer 21, an outer extrusion ring part outer friction layer 22, an outer extrusion ring part inner friction layer 23, an inner extrusion strip part first friction layer 24, an inner extrusion strip part second friction layer 25, an outer extrusion strip part first friction layer 26, an outer extrusion strip part second friction layer 27, a conductive bar 28, a guide sleeve 29, a cam 30, a push rod 31, a disengaging structure 32, a conductive ring 33, a cam bulge 34, a supporting block 35, a swing shaft 36, a shifting piece 37, a 38, a discharging pipe 39, a connecting lug 40, an extending baffle plate 41, a baffle plate 42, an outer baffle plate 42, a shifting piece 44, a swinging piece 44 and a swinging piece 46 at the maximum distance between the same position of a swing angle of a swing piece and a swing piece on a swing mechanism at the position of a swing piece on a cylinder and a swing piece on a swinging piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment, referring to fig. 1 to 4, a pair-roller sand making machine capable of eliminating jamming and fixing a roller leather in a friction mode comprises a machine frame, wherein the machine frame is provided with two crushing rollers and a driving motor for driving the crushing rollers to rotate. Crushing cylinder includes a section of thick bamboo 1 and main shaft 2 that rolls, rolls the barrel casing and establishes and rotate and connect in the main shaft, and crushing cylinder passes through the main shaft and links together with the frame, forms between two rolls the clearance 3 (see fig. 8) that rolls, rolls a section of thick bamboo and includes outer roller 4 and the interior roller 5 that links together can be dismantled with outer roller that is located outer roller. The opening of the outer roller is circular, and the inner roller body is cylindrical and coaxial with the outer roller. All be equipped with the annular spread groove 8 that lies in on rolling the section of thick bamboo terminal surface that extends along interior roll body circumference between the both ends of outer roller and interior roll body, be equipped with in the spread groove and prevent that outer roller produces pivoted rotation stopping mechanism 9 for interior roll body. The rotation stopping structure comprises an inner extrusion ring 10 and an outer extrusion ring 11 which are sleeved on an inner roller body, the outer end of the inner extrusion is provided with an inner extrusion ring part conical surface section 12, the outer peripheral surface of the inner extrusion ring part conical surface section is a conical surface with a large inner end and a small outer end, the inner peripheral surface of the inner extrusion ring part conical surface section is a conical surface with a small inner end and a large outer end, the inner end of the outer extrusion is provided with an outer extrusion ring part conical surface section 13, the outer peripheral surface of the outer extrusion ring part conical surface section is a conical surface with a small inner end and a large outer end, the inner extrusion ring is provided with a plurality of inner extrusion ring part threaded holes 14 which are distributed along the circumferential direction of the inner extrusion ring and extend axially, the outer extrusion ring is provided with a plurality of outer extrusion ring part bolt holes which are distributed along the circumferential direction of the outer extrusion ring and extend axially, the inner roller is characterized in that a plurality of outer extrusion strips 15 are arranged in the connecting groove, the two ends of the outer extrusion strips are circumferentially distributed along the connecting groove and respectively supported on the outer peripheral surface of the inner extrusion ring part conical surface section and the outer peripheral surface of the outer extrusion ring part conical surface section, a plurality of inner extrusion strips 16 are arranged in the connecting groove, the two ends of the inner extrusion strips are circumferentially distributed along the connecting groove and respectively supported on the inner peripheral surface of the inner extrusion ring part conical surface section and the inner peripheral surface of the outer extrusion ring part conical surface section, a plurality of tensioning screws 17 penetrate through the outer extrusion ring part bolt holes one by one and are threaded in the inner extrusion ring part threaded holes one by one, the outer extrusion strips are abutted to the inner peripheral surface of the outer roller under the extrusion action of the inner extrusion ring and the inner extrusion ring, and the outer peripheral surfaces of the inner roller bodies of the inner extrusion strips are abutted to each other. The outer extrusion pressing strip and the outer peripheral surface conical surface of the conical surface section of the inner extrusion ring portion are matched and abutted together, and the outer extrusion pressing strip and the outer peripheral surface conical surface of the conical surface section of the outer extrusion ring portion are matched and abutted together; the inner extrusion strip and the inner peripheral surface conical surface of the conical surface section of the inner extrusion ring portion are matched and abutted together, and the inner extrusion strip and the inner peripheral surface conical surface of the conical surface section of the outer extrusion ring portion are matched and abutted together. The inner circumferential surface of the outer roller is provided with a plurality of outer roller clamping grooves 18. The clamping groove of the outer roller part penetrates through the end surface of the outer roller. The outer extrusion pressing strips penetrate through the clamping grooves of the outer roller part in a one-to-one correspondence manner; a plurality of inner roller body part clamping grooves 19 are arranged on the outer peripheral surface of the inner roller body and run through the end surface of the inner roller body. The inner extrusion strips are correspondingly arranged in the clamping grooves of the inner roller body part in a penetrating way. An inner extrusion ring part outer friction layer 20 is arranged on the outer peripheral surface of the inner extrusion ring part conical surface section, an inner extrusion ring part inner friction layer 21 is arranged on the inner peripheral surface of the inner extrusion ring part conical surface section, an outer extrusion ring part outer friction layer 22 is arranged on the outer peripheral surface of the outer extrusion ring part conical surface section, an outer extrusion ring part inner friction layer 23 is arranged on the inner peripheral surface of the outer extrusion ring part conical surface section, an inner extrusion strip part first friction layer 24 which is abutted with the inner extrusion ring part inner friction layer is arranged at one end of the inner extrusion strip, an inner extrusion strip part second friction layer 25 which is abutted with the outer extrusion ring part inner friction layer is arranged at the other end of the inner extrusion strip, an outer extrusion strip part first friction layer 26 which is abutted with the inner extrusion ring part outer friction layer is arranged at one end of the outer extrusion strip, and an outer extrusion strip part second friction layer 27 which is abutted with the outer extrusion ring part outer friction layer is arranged at the other end of the outer extrusion strip.

The invention also comprises a control unit and a counter, and the crushing roller is provided with a slip detection mechanism for detecting whether the slip phenomenon is generated between the inner roller body and the outer roller body. The slip detection mechanism comprises a conductive bar 28, a guide sleeve 29, a cam 30, a push rod 31, a disengaging structure 32 and two conductive rings 33. The two conducting rings are distributed along the axial direction of the crushing roller, the cam and the conducting rings are coaxial with the crushing roller, and the cam is an outer cam. The cam is together fixed with interior roller body, and the uide bushing is together fixed with outer roller, and the ejector pin just wears to establish in the uide bushing along crushing roller's radial extension, and the one end of ejector pin links together with the conducting strip, and the other end aligns with the cam, and the conducting strip aligns with two conducting rings simultaneously, and ejector pin drive conducting strip butt simultaneously makes two conducting rings switch on two conducting rings when the ejector pin supports the bellying 34 at the cam. The separation structure is used for driving the ejector rod to drive the conductive bar to be separated from the conductive ring when the ejector rod and the protruding part of the cam are staggered, the conductive ring and the frame are fixed together, and one of the two conductive rings is sleeved on the outer roller. The driving motor, the counter and the conducting ring are electrically connected with the control unit; in the process of crushing stones by driving the crushing roller through forward rotation of the driving motor, when the conducting ring is separated from the conducting bar (when the grinding roller is blocked by stones and the outer roller cannot rotate along with the inner roller at the same angular speed, the conducting ring is separated from the conducting bar), the counter starts to record the conducting times N of the conducting bar and the conducting ring, when the N reaches a set value (the set value is 1 in the embodiment and the abrasion of a friction layer can be reduced), the control device enables the driving motor to rotate reversely for a set angle (the set angle is 90 degrees in the embodiment) and then stops for a set time (the set time is 3 seconds in the embodiment) and then performs forward rotation, and when the driving motor rotates reversely, the timer is reset. The disengaging structure is a spring. One end of the spring is connected with the guide sleeve, and the other end of the spring is connected with the ejector rod, specifically: the spring is sleeved on the ejector rod, a supporting block 35 is arranged on the ejector rod, one end of the spring is abutted with the guide sleeve, and the other end of the spring is abutted with the supporting block. The conducting bar is arranged in the conducting ring in a penetrating mode, and the supporting block is arranged at one end, facing the outer cam, of the ejector rod. Two the section of thick bamboo of rolling staggers along the axial, and two of the detection mechanism that skids in two sections of rolls, a section of thick bamboo of rolling a conducting ring cover is established one and is rolled a section of thick bamboo and stretch out one end of another section of thick bamboo of rolling.

The second embodiment is different from the first embodiment in that:

referring to fig. 5 to 9, the present invention further includes a stone moving structure moving stone to be crushed between the two crushing drums, and the stone moving structure moves the stone to be crushed between the two crushing drums during a period after the driving motor is reversely rotated by a set angle by the control means and then stopped. The stone moving structure comprises a plurality of shifting pieces 37 which are distributed along the axial direction of the crushing rollers and are positioned between the two crushing rollers and connected with the frame through a swing shaft 36, and a shifting piece driving mechanism for driving the shifting pieces to swing by taking the swing shaft as a shaft, wherein the swing shaft horizontally extends along the direction vertical to the crushing rollers. The frame is provided with a feeding hopper 38 for conveying stone materials to the crushing rollers, the feeding hopper is provided with a rectangular discharging pipe 39 extending into a flat structure between the two crushing rollers, the length direction of the discharging pipe is consistent with the axial direction of the crushing rollers, a swing shaft is fixed on the outer surface of the discharging pipe, and a shifting piece is suspended on the discharging pipe through the swing shaft. The pendulum shaft comprises two half sections, and two half sections are connected in the both sides of unloading pipe, and the plectrum is equipped with two engaging lugs 40, and two pendulum shafts wear to establish and can connect on two engaging lugs with rotating one-to-one. The half sections are welded and fixed together with the blanking pipe. The plectrum also includes the extension 41 that extends to in the blanking pipe, and the pendulum shaft is located between plectrum and extension. The plectrum and the extension section are positioned on the same surface. And adjacent shifting pieces are spaced from the extension section on the other shifting piece along the axial direction of the crushing roller in the process that the shifting pieces rotate by taking the swing shaft as the shaft. When the shifting piece swings to the position with the largest angle, the spacing distance L between the extending sections of one shifting piece and the other shifting piece in the adjacent shifting pieces is less than 2 cm, which is 2 mm in the embodiment. The feeder hopper still is equipped with two baffles 42 that are located the unloading pipe both ends that distribute along crushing roller axial, the baffle stretches into between two crushing barrels, and the clearance 43 between baffle and the outer cylinder is less than the granularity of treating kibbling building stones, also just building stones can not fall out from the circumference of crushing roller body under the effect of bottom. The paddle drive mechanism comprises a rack 44 extending axially along the crushing drum and a translation mechanism 45 driving the rack to translate reciprocally in the direction of extension of the rack. The translation mechanism is a cylinder. The shifting piece is provided with a plurality of driving teeth 46 which extend along the axial direction of the swing shaft and are distributed along the circumferential direction, and the driving teeth are meshed with the rack.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pair roller system sand machine of fixed roll skin of friction that can eliminate card and hinder, includes the frame, the frame is provided with two crushing drums and drive crushing drum pivoted driving motor, crushing drum includes grinding barrel and main shaft, crushing drum passes through the main shaft with the frame links together, forms between two grinding barrels and rolls the clearance, grinding barrel includes outer roller and interior roller body, its characterized in that still includes the control unit and counter, the opening shape of outer roller is circular, interior roller body is the same cylindrical with outer roller, outer roller and interior roller body are together fixed through the mechanism that splines of friction braking, can produce relative rotation between outer roller and the interior roller body when two grinding barrel carry out the in-process of grinding the building stones by the building stones and block, be equipped with on the crushing drum and detect whether produce the detection mechanism that skids of phenomenon between interior roller body and the outer roller, the slippage detection mechanism comprises conductive strips, a guide sleeve, a cam, a push rod, a disengagement structure and two conductive rings, wherein the conductive rings are distributed along the axial direction of the crushing roller, the cam and the conductive rings are coaxial with the crushing roller, the cam is fixed with the inner roller body, the guide sleeve is fixed with the outer roller body, the push rod extends along the radial direction of the crushing roller and penetrates into the guide sleeve, one end of the push rod is connected with the conductive strips, the other end of the push rod is aligned with the cam, the conductive strips are aligned with the two conductive rings simultaneously, when the push rod supports the protruding parts of the cam, the push rod drives the conductive strips to be abutted against the two conductive rings simultaneously to enable the two conductive rings to be conducted, the disengagement structure is used for driving the push rod to drive the conductive strips to be disengaged from the conductive rings when the protruding parts of the push rod and the cam are staggered, the conductive rings are fixed with the frame, the driving motor, the ejector rod, the disengagement structure and the guide rod are connected with the frame, the counter and the conducting ring are electrically connected with the control unit; in the process of crushing stone by driving the crushing roller by the forward rotation of the driving motor, when the conducting ring is disconnected from the conducting bar, the counter starts to record the conducting times N of the conducting bar and the conducting ring, when the N reaches a set value, the control device enables the driving motor to rotate reversely for a set angle and then stops rotating for a set time, and then the forward rotation is carried out, and when the driving motor rotates reversely, the timer is reset; the outer circumferential surface of the conical surface section of the inner extrusion ring part is provided with an outer friction layer of the inner extrusion ring part, the inner circumferential surface of the conical surface section of the inner extrusion ring part is provided with an inner friction layer of the inner extrusion ring part, the outer circumferential surface of the conical surface section of the outer extrusion ring part is provided with an outer friction layer of the outer extrusion ring part, one end of the inner extrusion strip is provided with a first friction layer of the inner extrusion ring part which is abutted with the inner friction layer of the inner extrusion ring part, the other end of the inner extrusion strip is provided with a second friction layer of the inner extrusion ring part which is abutted with the inner friction layer of the outer extrusion ring part, one end of the outer extrusion strip is provided with a first friction layer of the outer extrusion strip part which is abutted with the outer friction layer of the inner extrusion ring part, and the other end of the outer extrusion strip part is abutted with the outer friction layer of the outer extrusion ring part.

2. The pair-roller sand making machine capable of eliminating the friction fixing rolling skin of the jamming claim 1, wherein the disengaging structure is a spring.

3. The pair-roller sand making machine capable of eliminating the friction fixed rolling leather of the jamming as claimed in claim 2, wherein one end of the spring is connected with the guide sleeve, and the other end is sleeved on the ejector rod.

4. The pair-roller sand making machine capable of eliminating the friction fixed rolling leather of the jamming, according to claim 3, is characterized in that the spring is sleeved on the ejector rod, a supporting block is arranged on the ejector rod, one end of the spring is abutted with the guide sleeve, and the other end of the spring is abutted with the supporting block.

5. The pair-roller sand making machine capable of eliminating the friction fixed rolling leather of the jamming, as claimed in claim 4, wherein the cam is an outer cam, the conductive strip is arranged in a conductive ring in a penetrating way, and the supporting block is arranged at one end of the push rod facing to the outer cam.

6. A pair roller sand making machine capable of eliminating blocking and fixing rolling leather through friction is characterized in that two rolling cylinders are axially staggered, and one conductive ring of two conductive rings of a slip detection mechanism in each rolling cylinder is sleeved on one end, extending out of the other rolling cylinder, of each rolling cylinder.

7. A paired roller sand making machine with friction fixed roller skin capable of eliminating jamming as claimed in claim 1, 2, 3, 4 or 5 further comprising stone moving structure for moving stone to be crushed between the two crushing rollers, the stone moving structure moving the stone to be crushed between the two crushing rollers during the period after the control means makes the driving motor reverse the set angle and stop.

8. The pair-roller sand making machine capable of eliminating the friction fixed rolling skin of the jamming as claimed in claim 7, wherein the stone moving structure comprises a plurality of shifting pieces which are distributed along the axial direction of the crushing roller and are positioned between the two crushing rollers and connected with the frame through a swing shaft, and a shifting piece driving mechanism for driving the shifting pieces to swing by taking the swing shaft as an axis, and the swing shaft extends horizontally along the direction vertical to the crushing roller.

9. The pair-roller sand making machine capable of eliminating the friction fixed roller skin of the jamming is characterized in that a feeding hopper for conveying stone materials to the crushing rollers is arranged on the rack, the feeding hopper is provided with a rectangular prism-shaped discharging pipe extending into a flat structure between the two crushing rollers, the length direction of the discharging pipe is consistent with the axial direction of the crushing rollers, the swing shaft is fixed on the outer surface of the discharging pipe, and the shifting piece is suspended on the discharging pipe through the swing shaft.

10. The pair-roller sand making machine capable of eliminating the friction and fixing the rolling leather as claimed in claim 9, wherein the swing shaft is composed of two half sections, the two half sections are connected to two sides of the blanking pipe, the shifting sheet is provided with two connecting lugs, and the two swing shafts are correspondingly penetrated one by one and can be rotatably connected to the two connecting lugs.