CN211412311U

CN211412311U - Pre-screening device of crawler-type movable cone crushing station

Info

Publication number: CN211412311U
Application number: CN201921830655.6U
Authority: CN
Inventors: 雷华君; 江小辉; 庄韵嘉
Original assignee: Fujian South Highway Machinery Co Ltd
Current assignee: Fujian South Highway Machinery Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-09-04
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to a track removes cone crusher technical field, concretely relates to track removes screening plant in advance at cone crushing station, its characterized in that: including base, support frame, belt conveyor, screening machine, rubber swift current silo and connect the hopper, the support frame passes through the telescopic machanism assembly and locates on the base, and belt conveyor, screening machine and rubber swift current silo are from last to locating the support frame down in proper order on, thereby the flexible of telescopic machanism assembly can drive the support frame oscilaltion and realize this screening plant's expansion and folding in advance, connect the hopper to install on the base and locate the below in rubber swift current silo. The utility model has the advantages that the whole structure is novel, ensures to treat that broken material obtains effective screening before getting into circular cone main engine, can sift out most thin material or do not need broken material to reach the effect that improves the complete machine productivity, reduce circular cone main engine welt wearing and tearing, can carry out the fast switch-over between operating condition and transport state, the problem that the equipment superelevation appears when avoiding transporting.

Description

Pre-screening device of crawler-type movable cone crushing station

Technical Field

The utility model relates to a track removes cone crusher technical field, specificly relates to a track removes screening plant in advance at cone crushing station.

Background

The movable type crushing and screening equipment has the characteristics of integrated units, flexible maneuverability, free combination on site and the like, is favored by more and more customers, is generally used for middle-grade crushing to produce middle-grade products such as roadbed aggregates or railway stable layer stones or provide raw material crushing for grinding procedures, has a wide application range from hard and abrasive rocks to soft quarries, and is applied to mining industry with large and small treatment capacity.

In the process of the actual production of the track-moving type cone crushing equipment, the feeding of the track-moving type jaw crushing equipment is from the front end, or the excavator loader directly feeds the materials, the materials are fed to the feeder of the track-moving type cone crushing equipment, the transportation size and the height of the mobile crushing and screening equipment are limited, the existing track-moving type cone crushing equipment is usually directly fed into the cone main machine by the feeder to be crushed, but due to the diversity of the raw materials in the construction site, a lot of fine materials or the materials which do not need to be crushed directly enter the cone main machine can be caused, the utilization rate of the lining plate of the cone main machine is low, the yield is low, the abrasion of the lining plate of the cone main machine is too large, the energy consumption is high, in addition, too much mud enters the cone crushing main machine to cause the slow operation, and.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an overall structure is novel, ensures to treat broken material and obtains effective screening before getting into circular cone host computer, can sift out most thin material or do not need broken material to reach the effect that improves the complete machine productivity, reduce circular cone host computer welt wearing and tearing, can carry out fast switch over between operating condition and transport state, a track removes the preliminary screening plant at circular cone type crushing station of the super high problem of equipment appears when avoiding transporting.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: the utility model provides a screening plant in advance of cone type crushing station is removed to track, includes the base, the support frame, belt conveyor, the screening machine, rubber swift current silo and connects the hopper, and on the base was located through the telescopic machanism assembly to the support frame, belt conveyor, screening machine and rubber swift current silo located the support frame from last to down in proper order, thereby the flexible of telescopic machanism assembly can drive the support frame oscilaltion and realize this screening plant's expansion and folding in advance, connect the hopper to install on the base and locate the below in rubber swift current silo.

Furthermore, the telescopic mechanism assembly comprises two first telescopic components and two second telescopic components, the two first telescopic components are respectively arranged on the left side and the right side of the front end of the base, the telescopic function of the first telescopic components can drive the front end of the support frame to lift, the two second telescopic components are respectively arranged on the left side and the right side of the rear end of the base, and the telescopic function of the second telescopic components can drive the rear end of the support frame to lift.

Further, first flexible subassembly includes first interior expansion bracket, first outer expansion bracket and first pneumatic cylinder, first pneumatic cylinder is used for driving reciprocating of first interior expansion bracket in first outer expansion bracket, the upper end and the support frame lower extreme front side of first interior expansion bracket are articulated mutually, the lower extreme of first outer expansion bracket is fixed to be located on the base, the cylinder body and the first outer expansion bracket lower extreme of first pneumatic cylinder are articulated mutually, the tailpiece of the piston rod portion and the first interior expansion bracket upper end of first pneumatic cylinder are articulated mutually, first spacing hole has been seted up on the first interior expansion bracket, separable the inserting of first spacing downthehole is equipped with first spacer pin.

Further, the telescopic bracket in the second, telescopic bracket and second pneumatic cylinder outside the second, the second pneumatic cylinder is used for driving the outer telescopic bracket of second and reciprocates on the telescopic bracket in the second, the lower extreme of telescopic bracket is articulated mutually with the base in the second, the upper end and the support frame lower extreme rear side of the outer telescopic bracket of second are articulated mutually, the telescopic bracket lower extreme is articulated mutually in the cylinder body and the second of second pneumatic cylinder, the tailpiece of the piston rod portion of second pneumatic cylinder is articulated mutually with the outer telescopic bracket upper end of second, a plurality of spacing holes of second have been seted up along its length direction on the telescopic bracket in the second, separable the inserting of spacing downthehole of second is equipped with the spacing round pin of second, the second through-hole has still been seted up on the outer telescopic bracket of second.

Further, the belt conveyor discharge end left and right sides is articulated mutually with a supporting beam that corresponds on the support frame respectively, the left and right sides still all is equipped with the third pneumatic cylinder between belt conveyor and the support frame, the cylinder body and the support frame of third pneumatic cylinder are articulated mutually, the tailpiece of the piston rod portion of third pneumatic cylinder is articulated with belt conveyor, the flexible of third pneumatic cylinder is used for driving belt conveyor and overturns from top to bottom round the pin joint between belt conveyor discharge end and the supporting beam, belt conveyor's separable support of feed end is on flexible supporting component, flexible supporting component locates on the support frame.

Further, the telescopic support assembly comprises an outer third telescopic frame and an inner third telescopic frame, the inner third telescopic frame is movably arranged inside the outer third telescopic frame, the lower end of the outer third telescopic frame is fixedly arranged on the support frame, a support seat is fixedly arranged at the upper end of the inner third telescopic frame, a plurality of third limiting holes are formed in the inner third telescopic frame along the length direction of the inner third telescopic frame, a third through hole is formed in the outer third telescopic frame, and a third limiting pin is detachably inserted into the third through hole and the corresponding third limiting hole.

Further, the piston rod end of the third hydraulic cylinder is hinged with a support plate, a fixing hole is formed in the lower end of the support plate, and a fixing pin is detachably inserted into the fixing hole.

Further, the screening machine is a single-layer circular vibrating screen.

Furthermore, the feed end of the belt conveyor is provided with a receiving groove, the discharge end of the belt conveyor is provided with a discharge chute, and the upper end of the belt conveyor is also provided with a dust cover.

As can be seen from the above description, the utility model provides a pre-screening device of a caterpillar band mobile cone type crushing station, when in work, the material to be crushed is conveyed from the feeding machine to the feeding end of the belt conveyor and is transferred to the screening machine by the belt conveyor for screening, the screening machine screens the material to be crushed into medium and large materials and fine materials, the medium and large materials directly enter the conical main machine of the equipment for crushing, the fine materials fall onto the main conveying belt of the equipment from the rubber chute and the receiving hopper and are conveyed out for stacking, thereby achieving the effects of improving the productivity of the whole machine and reducing the abrasion of the liner plate of the conical main machine, in addition, when the materials conveyed by the feeding machine contain mud, the pre-screening device can also be used for conveniently pre-screening most of pug, so that the condition that the operation of the cone crushing main machine is slow due to the fact that the pug enters the cone crushing main machine is avoided, and the yield of the cone crushing main machine is effectively improved; through the arrangement of the first telescopic assembly and the second telescopic assembly, the lifting of the support frame can be conveniently driven, so that the belt conveyor, the screening machine and the rubber chute are driven to move together, the pre-screening device can be conveniently unfolded and folded, the pre-screening device can be rapidly switched between a working state and a transportation state, and the problem of ultrahigh equipment during transportation is avoided; meanwhile, the first telescopic assembly and the second telescopic assembly can run independently, so that the inclination angle of the support frame can be conveniently adjusted, and the screening angle of the screening machine and the conveying angle of the belt conveyor can be adjusted to adapt to different use working conditions; through the arrangement of the third hydraulic cylinder, the feeding end of the belt conveyor can be conveniently lifted, so that the maintenance space is enlarged, and the screening machine is convenient to overhaul or replace a screen on the screening machine; through the setting of backup pad, it can play safety mechanism's effect and play stable, safe support to the belt feeder after the lifting, ensures the personal safety of operating personnel when the maintenance.

Drawings

Fig. 1 is the utility model discloses a spatial structure schematic diagram when screening device in advance of track removal circular cone crushing station is in operating condition.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

Fig. 4 is the utility model discloses a spatial structure when the screening plant in advance of track removal circular cone crushing station is in operating condition decomposes the sketch map.

Fig. 5 is a partially enlarged schematic view of C in fig. 4.

Fig. 6 is a partially enlarged schematic view of fig. 4 at D.

Fig. 7 is the perspective structure schematic diagram of the pre-screening device of the caterpillar band mobile cone type crushing station in the transportation state.

In the figure: 1-a base; 2-a support frame; 21-a support beam; 22-a mounting seat; 3-a belt conveyor; 31-a receiving trough; 32-a discharge chute; 33-a dust cover; 34-a support block; 4, screening by a screening machine; 41-rubber block; 5-a rubber chute; 51-a platen; 6-a receiving hopper; 7-a telescoping mechanism assembly; 71-a first retraction assembly; 711-first inner telescoping mast; 712-a first outer telescoping mast; 713-a first hydraulic cylinder; 714-a first limit pin; 72-a second retraction assembly; 721-a second inner telescoping mast; 722-a second outer telescoping mast; 723-second hydraulic cylinder; 724-second limiting hole; 725-a second limit pin; 726 — a second via; 8-a third hydraulic cylinder; 81-a support plate; 82-a fixed pin; 9-supporting the telescoping assembly; 91-a third outer telescoping mast; 92-a third inner telescoping mast; 921-third limiting hole; 93-a support seat; 94-third limit pin.

Detailed Description

The present invention will be further described with reference to the following detailed description.

As shown in fig. 1 and 7, a screening plant in advance of cone crushing station is removed to track, include base 1, support frame 2, band conveyer 3, screening machine 4, rubber swift current silo 5 and connect hopper 6, support frame 2 locates through telescopic machanism assembly 7 on the base 1, band conveyer 3 the screening machine 4 with rubber swift current silo 5 is located from last to down in proper order on the support frame 2, thereby telescopic machanism assembly 7's flexible can drive the expansion and folding that this screening plant in advance was realized to 2 oscilaltions of support frame, connect hopper 6 install in on the base 1 and locate the below of rubber swift current silo 5.

This screening plant in advance is used for installing on the portable circular cone crushing apparatus of track to locate between batcher and the circular cone host computer, the batcher is at first fed to this screening plant in advance, and separates out partial thin material through this screening plant in advance, and the crushing is carried out in the residual material reentrant circular cone host computer, and this screening plant's specific working process in advance is as follows: the material to be crushed is conveyed to the feeding end of the belt conveyor 3 from a feeding machine, and is transferred to the screening machine 4 by the belt conveyor 3 for screening, the screening machine 4 screens the material to be crushed into medium and large materials and fine materials, the medium and large materials directly enter the main cone conveyor of the equipment for crushing, and the fine materials fall onto the main conveyor belt of the equipment from the rubber chute 5 and the receiving hopper 6 and are conveyed out for stacking, so that the effects of improving the whole machine capacity and reducing the abrasion of the lining plate of the main cone conveyor are achieved; through the arrangement of the telescopic mechanism assembly 7, the support frame 2 can be conveniently driven to lift, so that the belt conveyor 3, the screening machine 4 and the rubber chute 5 are driven to move together, the pre-screening device can be conveniently unfolded and folded, the pre-screening device can be rapidly switched between a working state and a transportation state, and the problem of ultrahigh equipment during transportation is avoided; the belt conveyor 3 comprises a conveyor frame, a head roller arranged at the head of the conveyor frame, a tail roller arranged at the tail of the conveyor frame, a plurality of supporting rollers arranged on the conveyor, a belt sleeved on the head roller and the tail roller and a driving motor for driving the head roller to rotate, and the belt conveyor 3 is the prior art and is not described herein in detail; the upper part of the rubber chute 5 can be locked and fixed on the supporting frame 2 through bolts by using a pressing plate 51, the lower part of the rubber chute 5 sags by self weight and is positioned in the receiving hopper 6, the rubber chute 5 made of rubber can be bent and folded to adapt to the folding and unfolding of the pre-screening device, and meanwhile, the arrangement of the rubber chute 5 is convenient for fine materials screened out of the screening machine 4 to enter a main conveying belt below and be conveyed out for stacking; connect hopper 6 accessible bolt fixed mounting in on the base 1, connect hopper 6 internal surface detachable to be equipped with a plurality of antifriction plates, the antifriction plate with connect through bolted connection between the hopper 6, thereby can improve connect the wearability of hopper 6.

As shown in fig. 1, 4 and 5, the pantograph mechanism assembly 7 comprises a first pantograph assembly 71 and a second pantograph assembly 72, the two first telescopic components 71 are respectively arranged at the left side and the right side of the front end of the base 1, the telescopic action of the first telescopic components 71 can drive the lifting of the front end of the supporting frame 2, the two second telescopic assemblies 72 are respectively arranged at the left side and the right side of the rear end of the base 1, the telescopic action of the second telescopic assemblies 72 can drive the lifting of the rear end of the support frame 2, by using the first and second retraction assemblies 71 and 72 that operate independently of each other, the inclination angle of the supporting frame 2 can be adjusted while the supporting frame 2 is driven to lift, therefore, the screening angle of the screening machine 4 and the conveying angle of the belt conveyor 3 can be conveniently adjusted to adapt to different use working conditions.

As shown in fig. 5, the first telescopic assembly 71 includes a first inner telescopic frame 711, a first outer telescopic frame 712 and a first hydraulic cylinder 713, the first inner telescopic frame 711 is movably disposed inside the first outer telescopic frame 712, the first hydraulic cylinder 713 is configured to drive the first inner telescopic frame 711 to move up and down inside the first outer telescopic frame 712, an upper end of the first inner telescopic frame 711 is hinged to a front side of a lower end of the support frame 2, a lower end of the first outer telescopic frame 712 is fixedly disposed on the base 1, a cylinder body of the first hydraulic cylinder 713 is hinged to a lower end of the first outer telescopic frame 712, an end of a piston rod of the first hydraulic cylinder 713 is hinged to an upper end of the first inner telescopic frame 711, a first limit hole is formed in the first inner telescopic frame 711, a first limit pin 714 is detachably inserted in the first limit hole, and the first hydraulic cylinder 713 can provide a required hydraulic power through a hydraulic station carried by the apparatus 713 itself, the extension and retraction of the first hydraulic cylinder 713 can conveniently drive the lifting and lowering of the front end of the support frame 2, the first limit pin 714 can be inserted into the first limit hole, the lower end of the first inner expansion bracket 711 is abutted against the first limit pin 714, at this time, the front end of the support frame 2 is located at a working position, so that the first inner expansion bracket 711 can be limited and fixed, the front end of the support frame 2 can be stably supported, the first hydraulic cylinder 713 is not required to keep oil pressure all the time, in addition, the lower end of the first inner expansion bracket 711 is further provided with a groove matched with the first limit pin 714, the first inner expansion bracket 711 is conveniently and better supported on the first limit pin 714, when the first limit pin 714 is taken out, the first inner expansion bracket 711 is lowered, and the bottom end of the first inner expansion bracket 711 is abutted against the base 1, at this moment, the front end of the support frame 2 is located at a transportation position, a first sleeve is further fixedly arranged on the first outer telescopic frame 712, and after the first limit pin 714 is taken out, the first sleeve can be inserted and placed in the first sleeve, so that the first sleeve is prevented from being lost.

As shown in fig. 5, the second telescopic assembly 72 includes a second inner telescopic frame 721, a second outer telescopic frame 722 and a second hydraulic cylinder 723, the second outer telescopic frame 722 is movably sleeved on the second inner telescopic frame 721, the second hydraulic cylinder 723 is used for driving the second outer telescopic frame 722 to move up and down on the second inner telescopic frame 721, the lower end of the second inner telescopic frame 721 is hinged to the base 1, the upper end of the second outer telescopic frame 722 is hinged to the rear side of the lower end of the support frame 2, the cylinder body of the second hydraulic cylinder 723 is hinged to the lower end of the second inner telescopic frame 721, the end of the piston rod of the second hydraulic cylinder 723 is hinged to the upper end of the second outer telescopic frame 722, the second inner telescopic frame 721 is provided with a plurality of second limiting holes 724 along the length direction thereof, a second limiting pin 725 is detachably inserted in the second limiting holes 724, the second outer expansion bracket 722 is further provided with a second through hole 726, the second hydraulic cylinder 723 can provide required hydraulic power through a hydraulic station carried by the equipment, the expansion of the second hydraulic cylinder 723 can conveniently drive the lifting of the rear end of the support frame 2, the second limit pin 725 can be inserted into the second limit hole 724, and the lower end of the second outer expansion bracket 722 is abutted to the second limit pin 725, so that the second outer expansion bracket 722 can be limited and fixed, the rear end of the support frame 2 can be stably supported, the second hydraulic cylinder 723 is not required to keep oil pressure all the time, in one embodiment, the second limit holes 724 are four, and the rear end of the support frame 2 can be sequentially located at a first working position, a second working position, a third working position and a transportation position from top to bottom, the position of support frame 2 rear end can be adjusted at first operating position, second operating position and third operating position to adjustable screening angle of screening machine 4 to be suitable for different operating modes, second spacer pin 725 is separable to be inserted and to be located second through-hole 726 and the below in the spacing hole 724 of second, and make support frame 2 rear end is in the transportation position, in addition, still fixedly be equipped with the second sleeve on the outer expansion bracket 722 of second, after second spacer pin 725 takes off, can insert and locate in the second sleeve, avoid losing.

As shown in fig. 1, 2 and 3, the left and right sides of the discharge end of the belt conveyor 3 are respectively hinged to the corresponding supporting beams 21 on the supporting frame 2, the left and right sides between the belt conveyor 3 and the supporting frame 2 are also provided with third hydraulic cylinders 8, the cylinder bodies of the third hydraulic cylinders 8 are hinged to the supporting frame 2, the end of the piston rod of the third hydraulic cylinder 8 is hinged to the belt conveyor 3, the extension and retraction of the third hydraulic cylinder 8 are used for driving the belt conveyor 3 to turn up and down around the hinge point between the discharge end of the belt conveyor 3 and the supporting beams 21, the feed end of the belt conveyor 3 is detachably supported on an extension and retraction supporting component, the extension and retraction supporting component is arranged on the supporting frame 2, and by adopting the structure, the stable supporting function can be achieved for the belt conveyor 3, simultaneously, the third hydraulic cylinder 8 can be conveniently driven to overturn the belt conveyor 3, so that the pre-screening device can be conveniently switched between a transportation state and a working state, meanwhile, when the feeding end of the belt conveyor 3 is lifted, the maintenance space can be enlarged, the screening machine 4 or the screen on the screening machine 4 can be conveniently overhauled, and in addition, the third hydraulic cylinder 8 can provide required hydraulic power by a hydraulic station carried by the equipment.

As shown in fig. 3 and 5, the telescopic support assembly includes a third outer telescopic frame 91 and a third inner telescopic frame 92, the third inner telescopic frame 92 is movably disposed inside the third outer telescopic frame 91, the lower end of the third outer telescopic frame 91 is fixedly disposed on the support frame 2, the upper end of the third inner telescopic frame 92 is fixedly disposed with a support seat 93, the third inner telescopic frame 92 is formed with a plurality of third limiting holes 921 along the length direction thereof, the third outer telescopic frame 91 is formed with a third through hole, a third limiting pin 94 is detachably inserted into the third through hole and the corresponding third limiting hole 921, the belt conveyor 3 is fixedly disposed with a support block, the feed end of the belt conveyor 3 can be stably supported on the support seat 93 through the support block 34, by adopting the mechanism, the feed end of the belt conveyor 3 can be stably supported, meanwhile, the third inner telescopic frame 92 can be conveniently adjusted to the position inside the third outer telescopic frame 91, so that the height of the supporting seat 93 is changed, the feeding end of the belt conveyor 3 can be rapidly switched between the working position and the transportation position, in one embodiment, the number of the third limiting holes 921 is three, and the feeding end of the belt conveyor 3 is sequentially arranged at the transportation position, the first working position and the second working position from top to bottom, and during operation, the position of the feeding end of the belt conveyor 3 can be adjusted at the first working position and the second working position, so that different conveying angles of the belt conveyor 3 can be realized.

As shown in fig. 2, the end of the piston rod of the third hydraulic cylinder 8 is further hinged with a support plate 81, a fixing hole is formed in the lower end of the support plate 81, a fixing pin 82 is detachably inserted into the fixing hole, when the third hydraulic rod extends and lifts the feed end of the belt feeder, the bottom end of the support plate 81 is abutted to the upper end of the cylinder body of the third hydraulic cylinder 8, and the fixing pin 82 is inserted to limit and fix the rotation of the support plate 81, so that the support plate 81 can play a role of a safety mechanism and stably and safely support the lifted belt feeder, and personal safety of an operator during maintenance is ensured.

As shown in fig. 1, 4 and 7, the screening machine 4 is a single-layer circular vibrating screen, and when a material enters the single-layer circular vibrating screen for screening, two screened materials with different particle sizes can be obtained, the single-layer circular vibrating screen includes a screen box, a hydraulic motor, a vibration exciter arranged on the screen box, a screen frame arranged inside the screen box, and a screen arranged on the screen frame, the screen box can be fixedly supported and mounted on the support frame 2 through a plurality of springs, and the hydraulic motor is used for driving the vibration exciter to rotate and vibrate the screen box, so as to screen the material.

As shown in fig. 6, a plurality of rubber stoppers 41 are arranged on the support frame 2 on one side close to the feeding end of the sieving machine 4, the rubber stoppers 41 are detachably arranged on the mounting seat 22, the rubber stoppers 41 can be connected with the mounting seat 22 by bolts, the mounting seat 22 is fixedly arranged on the support frame 2, and the rubber stoppers 41 can buffer excessive shaking generated when the sieving machine 4 is started or stopped.

As shown in fig. 1, a receiving groove 31 is arranged at a feeding end of the belt conveyor 3, so that a material overflow situation can be avoided when a feeding machine feeds materials onto the belt conveyor 3, a discharging groove 32 is arranged at a discharging end of the belt conveyor 3, so that materials can be better conveyed to the feeding end of the screening machine 4, and a dust cover 33 is further arranged at the upper end of the belt conveyor 3, so that the situation that dust scatters around during the conveying process of the belt conveyor 3 can be avoided.

A screening plant in advance of broken station of crawler movement circular cone, its corresponding a sieving plant's in advance of broken station of crawler movement circular cone application method as follows:

step 1, switching the pre-screening device from a transportation state to a working state, wherein the pre-screening device comprises the following specific expansion steps: a. operating a corresponding control device on the equipment to extend the third hydraulic cylinder 8 and drive the feeding end of the belt conveyor 3 to be lifted upwards, enabling the bottom end of the supporting plate 81 to be abutted against the upper end of the cylinder body of the third hydraulic cylinder 8, and inserting the fixing pin 82 into the fixing hole to limit and fix the rotation of the supporting plate 81, so that the supporting plate 81 can stably and safely support the lifted belt feeder; b. taking out the third limit pin 94, lifting the third inner expansion bracket 92 to a proper position, and reinserting the third limit pin 94 into the third through hole and the corresponding third limit hole 921 for fixing; c. operating a corresponding control device on the equipment to retract the third hydraulic cylinder 8 and drive the feeding end of the belt conveyor 3 to be seated on the supporting seat 93; d. taking out the first limit pin 714, operating a corresponding control device on the equipment, extending the first hydraulic cylinder 713, lifting the first inner expansion bracket 711 to a proper position, and reinserting the first limit pin 714 into the first limit hole for fixing; e. and taking out the second limiting pin 725, operating a corresponding control device on the equipment, extending the second hydraulic cylinder 723, lifting the second outer expansion bracket 722 to a proper position, and reinserting the second limiting pin 725 into the corresponding second limiting hole 724 for fixing, wherein the screening angle of the screening machine 4 can be adjusted by inserting the second limiting pin 725 into the different second limiting holes 724.

And 2, the pre-screening device works, when the equipment is started, the belt conveyor 3 and the screening machine 4 are operated, the material to be crushed is conveyed to the feeding end of the belt conveyor 3 from the feeding machine and is transferred to the screening machine 4 by the belt conveyor 3 for screening, the screening machine 4 screens the material to be crushed into medium and large materials and fine materials, the medium and large materials directly enter the conical main machine of the equipment for crushing, and the fine materials fall onto the main conveying belt of the equipment from the rubber chute 5 and the receiving hopper 6 and are conveyed out for stacking.

Step 3, stopping the pre-screening device, and stopping the belt conveyor 3 and the screening machine 4 in sequence when the equipment is stopped;

and 4, switching the pre-screening device from a working state to a transportation state, wherein the specific folding steps of the pre-screening device are as follows: a. taking out the second limit pin 725, operating a corresponding control device on the device, so that the second hydraulic cylinder 723 retracts and lowers the second outer expansion bracket 722 to a proper position, and reinserting the second limit pin 725 into the second through hole 726 and the corresponding second limit hole 724 for fixing; b. the first limit pin 714 is taken out, a corresponding control device on the equipment is operated, the first hydraulic cylinder 713 is contracted and lowered, the first inner expansion bracket 711 is lowered until the bottom end of the first inner expansion bracket 711 is abutted with the base 1, the first limit pin 714 is placed, and the first limit pin 714 can be inserted into the first sleeve to avoid loss; c. operating a corresponding control device on the equipment to extend the third hydraulic cylinder 8 and drive the feeding end of the belt conveyor 3 to lift upwards; d. taking out the third limit pin 94, lowering the third inner expansion bracket 92 to a proper position, and reinserting the third limit pin 94 into the third through hole and the corresponding third limit hole 921 for fixing; e. corresponding control devices on the equipment are operated to retract the third hydraulic cylinder 8 and drive the feeding end of the belt conveyor 3 to be seated on the supporting seat 93.

The aforesaid is only a plurality of concrete implementation manners of the utility model, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a preliminary screening plant of cone crushing station is removed to track which characterized in that: including base, support frame, belt conveyor, screening machine, rubber swift current silo and connect the hopper, the support frame passes through the telescopic machanism assembly to be located on the base, belt conveyor the screening machine with rubber swift current silo is from last to locating down in proper order on the support frame, the flexible of telescopic machanism assembly can drive thereby the expansion and the folding of this screening plant in advance are realized to the support frame oscilaltion, connect the hopper install in on the base and locate the below of rubber swift current silo.

2. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 1, wherein: the telescopic machanism assembly includes first flexible subassembly and the flexible subassembly of second, first flexible subassembly is two and locates respectively the base front end left and right sides, the flexible of first flexible subassembly can drive the lift of support frame front end, the flexible subassembly of second is two and locates respectively the base rear end left and right sides, the flexible of the flexible subassembly of second can drive the lift of support frame rear end.

3. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 2, wherein: first flexible subassembly includes first interior expansion bracket, first outer expansion bracket and first pneumatic cylinder, first pneumatic cylinder is used for driving first interior expansion bracket reciprocate in the first outer expansion bracket, the upper end of first interior expansion bracket with support frame lower extreme front side is articulated mutually, the lower extreme of first outer expansion bracket is fixed to be located on the base, the cylinder body of first pneumatic cylinder with first outer expansion bracket lower extreme is articulated mutually, the tailpiece of the piston rod portion of first pneumatic cylinder with first interior expansion bracket upper end is articulated mutually, first spacing hole has been seted up on the first interior expansion bracket, separable the inserting of first spacing downthehole is equipped with first spacer pin.

4. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 2, wherein: the telescopic component of second includes expansion bracket, the outer expansion bracket of second and second pneumatic cylinder in the second, the second pneumatic cylinder is used for driving the outer expansion bracket of second reciprocate in the expansion bracket of second, the lower extreme of expansion bracket in the second with the base is articulated mutually, the upper end of the outer expansion bracket of second with the support frame lower extreme rear side is articulated mutually, the cylinder body of second pneumatic cylinder with the expansion bracket lower extreme is articulated mutually in the second, the tailpiece of the piston rod portion of second pneumatic cylinder with the outer expansion bracket upper end of second is articulated mutually, the expansion bracket is gone up along its length direction and has been seted up the spacing hole of a plurality of seconds in the second, the separable inserting of spacing downthehole second spacer pin that is equipped with of second, the second through-hole has still been seted up on the outer expansion bracket of second.

5. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 1, wherein: the left side and the right side of the discharge end of the belt conveyor are respectively hinged with the supporting beams corresponding to the supporting beams on the supporting frame, third hydraulic cylinders are further arranged on the left side and the right side between the belt conveyor and the supporting frame, the cylinder bodies of the third hydraulic cylinders are hinged with the supporting frame, the end parts of piston rods of the third hydraulic cylinders are hinged with the belt conveyor, the third hydraulic cylinders stretch and are used for driving the belt conveyor to rotate around the hinge points between the discharge end of the belt conveyor and the supporting beams up and down, the feed end of the belt conveyor is detachably supported on a telescopic supporting component, and the telescopic supporting component is arranged on the supporting frame.

6. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 5, wherein: the telescopic supporting component comprises an outer telescopic frame and an inner telescopic frame, the inner telescopic frame is movably arranged in the third and is arranged inside the outer telescopic frame, the lower end of the outer telescopic frame is fixedly arranged on the supporting frame, a supporting seat is fixedly arranged at the upper end of the inner telescopic frame in the third, a plurality of third limiting holes are formed in the inner telescopic frame in the third along the length direction of the inner telescopic frame, a third through hole is formed in the outer telescopic frame in the third, and the third through hole corresponds to the third limiting pin in the third limiting hole in a separable inserting mode.

7. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 5, wherein: the piston rod end part of the third hydraulic cylinder is hinged with a supporting plate, a fixing hole is formed in the lower end of the supporting plate, and a fixing pin is detachably inserted into the fixing hole.

8. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 1, wherein: the screening machine is a single-layer circular vibrating screen.

9. The pre-screening device of a crawler traveling cone crusher station as set forth in claim 1, wherein: the feeding end of the belt conveyor is provided with a receiving groove, the discharging end of the belt conveyor is provided with a discharging groove, and the upper end of the belt conveyor is also provided with a dust cover.