CN110803456A

CN110803456A - Mine car taking device

Info

Publication number: CN110803456A
Application number: CN201911267375.3A
Authority: CN
Inventors: 叶美良; 张守金; 路安林; 蔡青峰; 颜威合; 丛海鹏; 詹东阳; 赵虎
Original assignee: Henan Igood Keming Electromechanical Equipment Co Ltd
Current assignee: Henan Igood Keming Electromechanical Equipment Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-02-18

Abstract

The invention belongs to the technical field of material taking operation of underground mine cars. A mine car taking device comprises a rack, a horizontal guide rail arranged on the rack, an upper support frame, a lower support frame, a conveying chain, a second driving part, a third driving part and a collecting hopper, wherein a support seat is arranged on the horizontal guide rail, and a driving chain wheel and a first driving part for driving the driving chain wheel are arranged on the support seat; the upper supporting frame is arranged at the first end part of the rack; the lower support frame and the upper support frame are vertically arranged oppositely, a telescopic frame is arranged between the upper support frame and the lower support frame, and guide chain wheels are arranged on the upper support frame and the lower support frame; the conveying chain is coiled on the driving chain wheel and the guide chain wheel, and a material taking hopper is arranged on the conveying chain. The mine car material taking device can realize continuous taking out of materials in the mine car, can improve the operation efficiency, can be suitable for operation in a narrow space, and has the characteristics of good stability and wide application range.

Description

Mine car taking device

Technical Field

The invention belongs to the technical field of underground mine car material taking operation, and particularly relates to a mine car material taking device.

Background

At present, in each domestic coal mine, ores and gravels used for guniting on the wall surface of an underground roadway are transported to a guniting place by a mine car, and as the width and the height of the roadway are limited, if materials are taken out from the mine car, the mine car is taken out by adopting mechanized equipment, the equipment which is usually designed is large in size, the function exerted in the roadway is limited by the environment, the efficiency is low, and the equipment cannot be used for field operation due to large size. For decades or hundreds of years, the mine car still remains to take materials from the mine car by manually holding a shovel or other auxiliary tools (in an original mode) and temporarily store the materials on the empty ground at two sides of the roadway guide rail or in a fixed bin, so that the whole material taking process has high labor intensity, low efficiency and poor operation environment (much dust). Some tunnel guniting operations are also similar to those described above.

Similar mine car material taking equipment has also been developed by some domestic large-scale enterprises or professional manufacturers or research institutes, such as: 1. the whole mine car is turned over by an angle to directly pour out the materials. 2. Taking out the materials by adopting screw transmission. 3. And taking out the materials in a mode of grabbing the materials by adopting a hydraulic opening and closing bucket, and the like. The research and development equipment is abandoned in the actual application process in the underground coal mine tunnel due to the reasons of large equipment, inconvenient operation, low use efficiency, difficult maintenance and the like.

Disclosure of Invention

The invention aims to solve the problems and the defects, and provides a mine car taking device which can continuously take out materials in a mine car, can improve the operation efficiency, can be suitable for operation in a narrow space, and has the characteristics of good stability and wide application range.

In order to realize the purpose, the adopted technical scheme is as follows:

a mine car reclaiming apparatus comprising: a frame; the horizontal guide rail is arranged on the rack, a supporting seat is arranged on the horizontal guide rail, and a driving chain wheel and a first driving part for driving the driving chain wheel are arranged on the supporting seat; an upper support frame arranged at a first end of the frame; the lower support frame is vertically opposite to the upper support frame, a telescopic frame is arranged between the upper support frame and the lower support frame, and guide chain wheels are arranged on the upper support frame and the lower support frame; the conveying chain is coiled on the driving chain wheel and the guide chain wheel, and a material taking hopper is arranged on the conveying chain; the second driving part drives the supporting seat to slide in the horizontal guide rail; the third driving part is arranged between the upper support frame and the telescopic frame and is used for keeping the telescopic frame in a tensioning state when the telescopic frame extends and retracts; and the material collecting hopper is arranged at the second end part of the rack and corresponds to the blanking end of the conveying chain.

According to the mine car taking device, preferably, the supporting seat is provided with walking wheels, and the walking wheels are arranged in the horizontal guide rail in a matching manner; and the upper support frame or/and the lower support frame are/is provided with an arc-shaped guide plate.

According to the mine car taking device, preferably, the conveying chains are arranged in two groups which are arranged in a left-right corresponding mode, the conveying chains are in a right-angle annular shape, and the material taking hopper is arranged between the two groups of conveying chains.

According to the mine car taking device, preferably, the single right-angle annular conveying chain comprises an upper layer conveying chain and a lower layer conveying chain, and a support chain plate is arranged at the end part of the supporting seat and supported at the lower part of the corresponding upper layer conveying chain.

According to the mine car taking device, preferably, the upper support frame is two upper support plates which are oppositely arranged, and guide chain wheels are arranged on the two upper support plates; the lower support frame comprises two lower support plates which are oppositely arranged, the lower support plates are of arc-shaped structures, and guide chain wheels are arranged on the two lower support plates.

According to the mine car taking device, preferably, the upper supporting plate is provided with a guide chain wheel and a guide plate, the guide chain wheel corresponds to the upper-layer conveying chain, and the guide plate is arc-shaped and corresponds to the lower-layer conveying chain; the lower supporting plate is provided with a plurality of guide chain wheels which are arranged in an arc shape.

According to the mine car taking device, preferably, the second driving part is a multi-stage hydraulic oil cylinder, two ends of the multi-stage hydraulic oil cylinder are respectively connected with the upper supporting frame and the supporting seat, and the multi-stage hydraulic oil cylinder drives the supporting seat to slide.

According to the mine car taking device, preferably, the telescopic frame is a diamond telescopic connecting rod mechanism, and the two groups of diamond telescopic connecting rod mechanisms are arranged in a left-right corresponding mode; the rhombic telescopic connecting rod mechanism comprises a plurality of groups of connecting rod sets which are sequentially hinged end to end through first pin shafts, and each connecting rod set comprises two connecting rods which are arranged in an X shape and a second pin shaft which is arranged between the two connecting rods.

According to the mine car taking device, preferably, horizontal sliding grooves are formed in the upper support frame and the lower support frame, and first pin shafts at the upper end part and the lower end part of the rhombic telescopic connecting rod mechanism are arranged in the horizontal sliding grooves in a sliding mode; the third driving part is a pushing oil cylinder which is fixedly arranged on the upper support frame, a vertical sliding groove is formed in the upper support frame, a push plate corresponding to the second pin shaft is arranged at the action end of the pushing oil cylinder, the second pin shaft at the uppermost part of the rhombic telescopic connecting rod mechanism or the push plate is arranged in the vertical sliding groove in a matching sliding mode, and the pushing oil cylinder continuously keeps pushing force on the second pin shaft.

According to the mine car reclaiming device, the two conveying chains are preferably provided with circulating support belts.

By adopting the technical scheme, the beneficial effects are as follows:

this application is to the characteristics of underground coal mine tunnel environment, realizes taking out the material in succession from the interior direct low discharge of mine car, through the structural design of upper bracket, under bracing frame and expansion bracket, cooperation second drive division and third drive division can make whole smooth operation, and the conveyor chain can keep sufficient tensile force to overcome and get the influence that the gravity change of material in-process vertical direction caused control system.

The mining car in the underground coal mine tunnel of the coal mine industry at present is changed to get the material mode, and the material mode is got from the manual work and is realized semi-automatic material mode of getting, has liberated the high intensity work of underground operation, has improved the operating efficiency, gets the material speed through the adjustment and satisfies the underground mine car and gets material efficiency, satisfies the production needs, gets the material for coal mine tunnel mine car and provides good operation environment and gets the material speed assurance, reduces the operating cost and improves the operating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.

FIG. 1 is a schematic view of one embodiment of a mine car reclaimer assembly according to the present invention.

FIG. 2 is a second schematic view of the construction of a mine car reclaimer assembly according to an embodiment of the present invention.

Fig. 3 is a side view of the structure of fig. 2.

FIG. 4 is a third schematic view of a mine car reclaiming apparatus according to an embodiment of the invention.

Fig. 5 is one of the assembling structures of the diamond-shaped telescopic link mechanism and the upper support frame according to the embodiment of the present invention.

Fig. 6 is a second schematic view of an assembly structure of the diamond-shaped telescopic link mechanism and the upper support frame according to the embodiment of the invention.

Number in the figure:

200 is a frame, 201 is a conveying chain, 202 is a horizontal guide rail, 203 is a supporting seat, 204 is a first driving part, 205 is a collecting hopper, 206 is a driving chain wheel, 207 is a second driving part, 208 is a circulating supporting belt, and 209 is a supporting chain plate;

310 is an upper support frame, 311 is a guide chain wheel, 312 is a guide plate, 313 is a horizontal sliding groove, 314 is a vertical sliding groove, 315 is a push plate, 320 is a lower support frame, 330 is a diamond-shaped telescopic connecting rod mechanism, 331 is a connecting rod, 332 is a first pin shaft, 333 is a second pin shaft, 340 is a material taking hopper, and 350 is a third driving part.

Detailed Description

Illustrative aspects of embodiments of the invention are described more fully hereinafter with reference to the accompanying drawings, in which specific embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art.

In the description of the present invention, it should be understood that the terms "first" and "second" are used to describe various elements of the invention, and are not intended to limit any order, quantity, or importance, but rather are used to distinguish one element from another.

It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.

It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience in describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.

Referring to fig. 1-6, the application relates to a mine car reclaiming device, which comprises a frame 200, a horizontal guide rail 202 arranged on the frame 200, an upper support frame 310, a lower support frame 320, a conveying chain 201, a second driving part 207, a third driving part 350 and a collecting hopper 205, wherein a support seat 203 is arranged on the horizontal guide rail 202, and a drive sprocket 206 and a first driving part 204 for driving the drive sprocket are arranged on the support seat 203; the upper supporting frame is arranged at the first end part of the frame; the lower support frame 320 is vertically opposite to the upper support frame 310, a telescopic frame is arranged between the upper support frame 310 and the lower support frame 320, and guide chain wheels 311 are arranged on the upper support frame 310 and the lower support frame 320; the conveying chain 201 is coiled on the driving sprocket 206 and the guide sprocket 311, and a material taking hopper 340 is arranged on the conveying chain 201; the second driving part 207 drives the supporting seat to slide in the horizontal guide rail 202; the third driving part 350 is disposed between the upper supporting frame 310 and the telescopic frame, and is used for keeping the telescopic frame in a tensioned state when the telescopic frame extends and retracts; the collection hopper 205 is disposed at a second end of the frame and corresponds to a blanking end of the conveyor chain.

In the structure, the first driving part 204 is an explosion-proof motor or a hydraulic motor, and can be applied to underground operation of a coal mine, so that the safety of construction is guaranteed; the second driving part 207 adopts a multistage hydraulic oil cylinder, two ends of the multistage hydraulic oil cylinder are respectively connected with the rack and the supporting seat, the third driving part 350 adopts a pushing oil cylinder, and due to the structure of the telescopic frame, the stroke of the pushing oil cylinder does not need to be large, so that the multistage hydraulic oil cylinder does not need to be adopted.

The supporting seat 203 is provided with traveling wheels, and the traveling wheels are arranged in the horizontal guide rail 202 in a matching mode, so that friction force is reduced conveniently, and stability control is facilitated.

In this embodiment, the conveying chains 201 are arranged in two groups corresponding to each other in the left-right direction, the conveying chains 201 are in a right-angle ring shape, and the material taking hopper is arranged between the two groups of conveying chains 201; the single right-angle annular conveying chain comprises an upper-layer conveying chain and a lower-layer conveying chain, a support chain plate 209 is arranged at the end part of the support base 203, the support chain plate 209 is supported at the lower part of the corresponding upper-layer conveying chain, a guide plate 312 is arranged on the upper support frame 310, the lower support frame 320 or/and the rack 200, the specific position and the setting number of the guide plate 312 are shown in the figure, the arc-shaped guide plate 312 in the embodiment is arranged corresponding to the lower-layer conveying chain, the lower-layer conveying chain is arranged at the position where the horizontal direction is changed to the vertical direction, namely the guide plate 312 is arranged at the end part (or the upper support frame) of the rack 200 and is used for realizing the direction change of the conveying chain at the position, the guide plate and the guide chain wheel are matched to realize the guide and the support of the conveying chain on the upper support frame 310 and the lower support frame 320, if larger acting force is needed, the lower support frame 320 is provided with a plurality of guide chain wheels 311 which are arranged in an arc shape.

The second driving part 207 is a multi-stage hydraulic oil cylinder, two ends of the multi-stage hydraulic oil cylinder are respectively connected with the upper support frame 310 and the support seat 203, and the multi-stage hydraulic oil cylinder drives the support seat 203 to slide. In order to reduce the friction force of the supporting seat 203 in the action process, the bottom of the supporting seat 203 in the embodiment is provided with a traveling wheel which is arranged in the horizontal guide rail 202 in a matching manner; the two conveying chains 201 are provided with the circulating carrying belts 208, so that the situation that materials are scattered after the material taking hopper is converted from vertical state motion to horizontal state motion after the materials are taken can be avoided, and the material conveying efficiency is improved.

The telescopic frame is a diamond-shaped telescopic connecting rod mechanism 330, and the two diamond-shaped telescopic connecting rod mechanisms 330 are arranged correspondingly left and right; the rhombic telescopic connecting rod mechanism 330 comprises a plurality of connecting rod groups which are sequentially hinged end to end through first pin shafts, and each connecting rod group comprises two connecting rods 331 arranged in an X shape and a second pin shaft 333 arranged between the two connecting rods; horizontal sliding grooves are formed in the upper supporting frame and the lower supporting frame, and first pin shafts 332 at the upper end part and the lower end part of the diamond telescopic connecting rod mechanism are arranged in the horizontal sliding grooves 313 in a sliding mode, so that the telescopic frame can be guaranteed to vertically extend and retract, and a vertical guiding effect is achieved; the third driving part 350 is a pushing cylinder, the pushing cylinder is fixedly arranged on the upper support frame, a vertical sliding groove 314 is arranged on the upper support frame, a push plate corresponding to the second pin 333 is arranged at the action end of the pushing cylinder, the second pin 333 or the push plate 315 at the uppermost part of the rhombic telescopic link mechanism 330 is arranged in the vertical sliding groove 314 in a matching sliding manner, and the pushing cylinder continuously keeps pushing force on the second pin 333, and the horizontal sliding groove 313 and the vertical sliding groove 314 in the structure can be replaced by other guiding structures, such as a guide rail, a slide rail and the like.

The working principle and preferred embodiments of the present application are described in detail below with reference to the accompanying drawings:

1. the method for semi-automatically taking materials from the mine car to the outside in the underground coal mine tunnel is described in the following implementation principle:

at the position where material taking is started, an explosion-proof motor or a hydraulic motor is started, power is rotated, a right-angle annular conveying chain (a left standard conveying chain and a right standard conveying chain) is driven to rotate and convey through transmission of a chain wheel and a chain, and a plurality of material taking hoppers arranged between the left conveying chain and the right conveying chain move and rotate along with the rotation, wherein the rotation arrow direction and the moving direction are shown in the figure. The hydraulic valve is operated, a cylinder rod of the pushing oil cylinder vertically moves downwards to push a second pin shaft in the middle of two sets of rhombic link mechanisms to vertically move under the limit of upper and lower guide grooves along vertical sliding grooves on two sides, at the moment, the rhombic link mechanisms move downwards (two sets of the rhombic link mechanisms are simultaneously used) to drive a lower support frame to move downwards, when a material taking hopper touches the material, the material begins to be dug and then is conveyed upwards, when the material taking hopper which takes the material moves upwards and passes through a horizontal upper layer conveying chain, part of the material can slide onto a circulating support belt (made of soft materials such as nitrile rubber, canvas and the like) of the conveying chain, when the material is conveyed to the second end part of the rack, the material rotates to a lower layer, at the moment, the material falls into a material collecting hopper under the action of self gravity, and; meanwhile, the lower layer conveying chain firstly moves horizontally along the track and then slides downwards. When downward movement is needed to take materials, the multistage hydraulic oil cylinder moves in the horizontal direction and retracts, the supporting seat is driven to move along the horizontal guide rail, the pushing oil cylinders synchronously move downwards at the moment, the rhombic connecting rod mechanisms are kept in a tensioning state all the time, enough downward acting force is provided for the material taking hoppers, the material taking hoppers gradually dig materials downwards and then convey the materials upwards, the materials enter the material collecting hoppers until all cylinder rods of the multistage hydraulic oil cylinder retract, and at the moment, the rhombic connecting rod mechanisms move downwards to the lowest position, namely the material taking hoppers reach the lowest position. The above describes: in the process of taking materials from the right-angle annular conveying chain into the mine car, the conveying chain drives the empty material taking hopper to be conveyed in the vertical direction from horizontal conveying, the material taking hopper is used for conveying materials from vertical conveying to horizontal conveying through the conveying chain after the materials are taken, and the materials are conveyed into the material collecting hopper to finish the material taking process of the mine car. Of course, if the take-out hopper has hit the bottom of the car during the downward take-out process, this time the take-out process has been completed. The material taken out at this time falls to a blanking point B in the aggregate bin; this requires a reverse movement, namely: the cylinder rod of the multistage hydraulic cylinder gradually extends out to push the supporting seat to horizontally move along the reverse direction of the horizontal guide rail, the conveying chain drives the material taking hopper and the rhombic connecting rod mechanism to move upwards, the pushing cylinder retracts to keep enough supporting force until the highest position, and a downward material taking process is completed at the moment.

The process of taking materials into the mine car is actually a process of moving the central line of the conveying chain back and forth along a right-angle line track once circularly by the annular conveying chain and the material taking hopper, and the processes of gradually shortening the horizontal section and gradually lengthening the vertical section of the conveying chain are a material taking process and a material conveying process of the material taking hopper into the mine car; the process that the vertical section of the conveying chain is gradually shortened and the horizontal section of the conveying chain is gradually lengthened is the process that the material taking hopper returns to the initial position of the equipment after the mine car takes the materials, the process that the materials are conveyed and the material taking hopper pours the materials out and is emptied, and the process is also the state that the material taking of the next mine car starts. The material taking method realizes compact design of the equipment, greatly reduces the height, basically realizes the continuous material taking process, and is suitable for operation in underground coal mine tunnels due to compact structure of the equipment. The width of the material taking hopper is related to the structural strength, the stability and the operation flexibility of the whole machine equipment, for a 2-meter-long mine car, all materials in the mine car can be taken for 4 times or 5 times, the whole car can be taken for material, and the taking for the material can be completed after the material is taken for the first time, and each time the material taking is completed requires 1 minute to 1.5 minutes, so that the mine car needs to move for a certain distance after the material is taken for the first time, and the material can be taken out from the whole mine car by selecting the movement of the mine car or the movement of a mine car material taking machine set, and particularly the material taking position can be determined according to actual requirements, namely the material taking position can be changed by the movement of the mine car, and the material taking position can also.

The adoption of the diamond-shaped link mechanism has the characteristic of being beneficial to operation in the downward material taking process, because each rotating joint has more or less gaps when the diamond-shaped link mechanism is designed and manufactured, the longer the diamond-shaped link mechanism extends downwards, the larger the swinging amount of the lower part can be (the superposition and amplification of the gaps), thus when the material taking hopper touches the bottom of the mine car, different sounds (slight collision and friction) can be generated, an operator can be reminded to take materials without continuously taking materials downwards, the operator can be informed to finish taking materials or change positions to take materials, therefore, the rigid collision between the material taking hopper and the bottom of the mine car can be avoided, the equipment damage caused by hard collision can not be caused, only slight abrasion can be caused, but the material taking hopper serving as a quick-wear part can reach the replacement degree, and the material taking hopper can. Of course, if a limit sensor (a travel switch or a special signal sensor) + a control system is added on the lower support frame, the automatic limit control of downward material taking to the bottom can be automatically judged and controlled.

2. The tension and control method for the integral moving process of the right-angle annular conveying chain adopts the following principle:

the tensioning method for the integral moving process of the right-angle annular conveying chain comprises the following steps: the power for realizing the left and right movement of the supporting seat is that the conveying chain is driven to move by pushing out a cylinder rod of the multi-stage hydraulic oil cylinder, the small supporting frame and the material taking hopper are driven to move along with the movement, meanwhile, the rhombic connecting rod mechanism is driven to retract, the second pin shaft is forced to move upwards, the cylinder rod of the pushing oil cylinder retracts upwards, certain resistance is generated while retracting (a throttle valve and an overflow valve are arranged on an oil way of the pushing oil cylinder, so that the oil way generates certain pressure), and the aim is to ensure that the conveying chain is always in a certain tensioning state in the moving process; on the contrary, the pushing-out of the cylinder rod of the pushing oil cylinder is used as power to push the second pin shaft to move downwards to drive the rhombic link mechanism to extend out, the lower support frame and the material taking hopper to move along with the pushing-out of the second pin shaft, so that the conveying chain moves downwards to force the support seat to move leftwards, the cylinder rod of the multi-stage hydraulic oil cylinder is driven to retract, and certain resistance is generated while retracting (a throttle valve and an overflow valve are arranged on an oil way of the multi-stage hydraulic oil cylinder to enable the oil way connected with the multi-stage hydraulic oil cylinder to generate certain pressure), so that the conveying chain is always in a certain. By adopting the method, no matter the mine car is in the material taking process or the empty running state returns to the original material taking state, as long as certain pressure is kept in the oil way, resistance exists all the time, so that certain tension is kept in the moving process and the static state of the conveying chain, and the tensioning in the integral moving process of the right-angle annular conveying chain is realized.

The control method for tensioning in the integral moving process of the right-angle annular conveying chain comprises the following steps:

description of the drawings: f1, the downward thrust for pushing the cylinder rod of the oil cylinder depends on the pressure of the overflow valve of the oil cylinder.

G1- -the weight of the parts in the chain double-dashed line, the size is a variable, the whole material taking process becomes bigger gradually.

T1-is the thrust of the multi-stage hydraulic oil cylinder, and the magnitude depends on the pressure of the overflow valve of the oil cylinder.

f-is the friction force generated by the horizontal section moving parts along the guide rail support. The size is a variable, the whole material taking process is gradually reduced, but the difference value is not changed greatly, so that the value is not changed, and the value is not large (mainly rolling friction) as a whole. This term is not considered as an important factor in the rough calculation and may not be considered.

When F1+ G1> T1+ F, downward digging of the materials is realized, and the materials are conveyed upwards.

When T1> F1+ G1+ F, the rhombic connecting rod mechanism and the material taking hopper move upwards and return to a material waiting state.

The conveyor chain tension JF is approximately: JF ≈ T1-f

Since the value of f is small and relatively stable, controlling the value of T1 primarily controls the chain tension JF. The maximum variation of G1 size is (estimated): the weight of 12 sets of material hoppers (3.5X 12) +6 hoppers (3.7X 6) +4 meters of chain weight (1.7X 4) =71kg, the maximum value of G1 =71kg + the weight of the diamond-shaped link mechanism + the total weight of the lower support frame, and the minimum value of G1 = the weight of the diamond-shaped link mechanism + the total weight of the lower support frame. This factor is important and must be considered with great emphasis. If this factor is not considered, then the downward material taking speed will be faster and faster in the process of material taking of the mine car, namely, an acceleration is generated in the downward material taking process, and the acceleration is generated by the structure.

To smoothly complete the mine car material taking process, three methods can be adopted:

the first method is to set the chain tension JF large enough so that the resulting acceleration is small and the downward take-off and upward lifting speeds are easier to control, but considering the structural strength of the conveyor chain, a high strength conveyor chain or an enlarged conveyor chain model can be selected.

The second method is considered from the manual operation of the hydraulic control valve, in other words, the thrust F1 of the pushing oil cylinder is controlled, but the F1 value is relatively constant after the installation and adjustment of equipment in general conditions, the real-time change is not easy, the control cost is too high if the real-time change is required, the intermittent thrust F1 can be adopted, namely the hydraulic control valve is controlled through the manual operation, the oil is supplied to the pushing oil cylinder intermittently, and the influence caused by the downward acceleration can be eliminated quickly; similarly, when the conveying chain and the material taking hopper are lifted upwards, the oil is supplied to the multi-stage hydraulic oil cylinder intermittently (the T1 value is intermittent).

The third method comprises the following steps: the method is characterized in that an electric control element is added and a control program is programmed to provide a changed F1 value (the whole material taking process is gradually reduced), only the control cost of the equipment is higher, the change of the T1 value (the whole lifting process is gradually reduced) can be properly considered, and the method can be adopted on the equipment with higher requirement on the intelligent degree.

In practical application, the following situations need to be considered:

in the process of realizing mine car material taking, the central line of the annular conveying chain moves back and forth once along a right-angle line track to complete a circular material taking process and return to the original waiting position state, in order to smoothly complete the whole material taking process, the right-angle annular conveying chain must have a relatively stable tension JF, if the tension JF is small, the transmission between the chain wheel and the chain can fall off to jump teeth or sliding teeth or clamping teeth, if the tension JF is too large, the transmission abrasion of the chain wheel and the chain is accelerated to reduce the service life, and if the tension JF exceeds a chain strength limit value, the chain can be directly damaged or broken. Therefore, in order to smoothly and reliably finish the whole process of taking materials from the mine car, aiming at the requirement of adjusting the tension JF to a proper degree by comprehensively considering various factors, the tension is judged according to the sag distance H during the transmission of the upper-layer chain, if the sag distance H is larger, the tension is not enough, if the sag distance H is smaller, the tension is larger, and the proper sag distance H value can be adjusted according to experimental debugging to determine the adjustment range. If the strength of the conveyor chain is sufficiently great, it is appropriate to consider increasing some of the tensioning forces JF, i.e. decreasing the value of H.

3. The guide device for the integral moving process of the right-angle annular conveying chain is described as follows:

in order to ensure the reliability and stability of the operation of the conveying chain in the process of taking materials from the mine car, each stage of the operation of the conveying chain needs to be supported and guided for limitation, and a set of combined limiting and guiding devices, namely a horizontal guiding device, a circular arc guiding device and a vertical guiding device, is formed.

Horizontal guiding device of conveying chain lower floor: the horizontal movement of the supporting seat is ensured by the supporting guidance and the limiting of the horizontal guide rails, the structure of the horizontal guide rails can be two, three or four parallel guide rails, and the number of the guide rails is selected according to the requirement; the support of conveying chain divide into: the support guide and the chain guide plate of the lower-layer conveying chain are divided into a left guide and a right guide which are parallel to each other in the same horizontal plane and a support, each guide and support is provided with a straight line section and an arc section, the straight line sections and the arc sections are in uniform and smooth transition, and the conveying chain is ensured to be transited from the horizontal section to the vertical section.

Arc guide device of conveying chain: the guide and limit guarantee of the conveying chain from the descending process to the ascending process is completed by the lower supporting frame, the lower supporting frame is arc-shaped, the specific guide structure of the lower supporting frame is a guide plate and chain wheel combination (the support and the guide of the conveying chain on the left side and the right side are respectively provided), the walking track of the material taking hopper is guaranteed to be the same when the material is dug and taken, and the transmission stability and the material taking stability are guaranteed.

Horizontal guiding device of conveying chain upper strata: the conveying guide and the limiting of the conveying chain from ascending to the transition to the horizontal section are completed through guide chain wheels (the left and the right sides of each chain wheel are fixed on the same branched chain wheel shaft); the support direction of upper conveying chain is accomplished through the support link joint that sets up (control two support link joints that are parallel to each other in the same level), if the height of getting the material downwards is bigger than normal, then the displacement distance of horizontal segment is also bigger than normal, and the flagging distance H of upper conveying chain intermediate position is also bigger than normal, can increase one set of support at this intermediate position (nevertheless need follow the corresponding removal of supporting seat along the guide rail, do not describe in detail here).

Vertical guide of conveyor chain: the mine car material taking process needs to ensure that materials are taken vertically and downwards at the same position, and the materials need to be guided in the vertical direction, namely, the materials pass through the vertical sliding grooves (one set of the left side position and the right side position) to be used as the limiting and guiding of vertical movement. When materials are taken downwards, a cylinder rod of the pushing oil cylinder is pushed out to push an oil cylinder push plate, two sides of the oil cylinder push plate move up and down in the vertical sliding groove, and the oil cylinder push plate simultaneously pushes second pin shafts on two sides of the diamond-shaped link mechanism to move vertically downwards, so that the lower end of the whole set of diamond-shaped link mechanism is connected with the fixed lower support frame to move vertically downwards. However, it is not enough to ensure the vertical movement of the whole set of the diamond link mechanism, and it is only necessary to rely on the vertical guide of the second pin shaft, and four pivot guides (two sets of diamond mechanisms, eight guide moving pivots in total) at two ends of the diamond mechanism itself need to be added, and in the figure, four upper and lower pivots of one set of diamond mechanism are: namely four first pin shafts. From the viewpoint of the diamond link mechanism itself, the second pins on both sides move vertically downward, and the four first pins move left and right and simultaneously move downward. Therefore, all the rotating pins in the middle position of the diamond-shaped mechanism move downwards along the vertical line, so that the whole downward material taking process is ensured to move downwards vertically.

The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

While the preferred embodiments for carrying out the invention have been described in detail, it should be understood that they have been presented by way of example only, and not limitation as to the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art, which modifications are within the scope of the present invention.

Claims

1. A mine car reclaiming apparatus, comprising:

a frame;

the horizontal guide rail is arranged on the rack, a supporting seat is arranged on the horizontal guide rail, and a driving chain wheel and a first driving part for driving the driving chain wheel are arranged on the supporting seat;

an upper support frame arranged at a first end of the frame;

the lower support frame is vertically opposite to the upper support frame, a telescopic frame is arranged between the upper support frame and the lower support frame, and guide chain wheels are arranged on the upper support frame and the lower support frame;

the conveying chain is coiled on the driving chain wheel and the guide chain wheel, and a material taking hopper is arranged on the conveying chain;

the second driving part drives the supporting seat to slide in the horizontal guide rail;

the third driving part is arranged between the upper support frame and the telescopic frame and is used for keeping the telescopic frame in a tensioning state when the telescopic frame extends and retracts; and

and the collecting hopper is arranged at the second end part of the rack and corresponds to the blanking end of the conveying chain.

2. The mine car reclaiming apparatus as claimed in claim 1, wherein the support base is provided with road wheels, and the road wheels are arranged in the horizontal guide rail in a matching manner; and the upper support frame, the lower support frame or/and the rack are/is provided with arc-shaped guide plates.

3. The mine car reclaiming apparatus as claimed in claim 1 wherein the conveyor chains are arranged in two sets in a left-right correspondence, the conveyor chains are in a right-angled loop configuration, and the skip is disposed between the two sets of conveyor chains.

4. The mine car reclaiming apparatus as claimed in claim 3 wherein the single right angle endless conveyor chain comprises an upper conveyor chain and a lower conveyor chain, and wherein the support shoe has a shoe plate at an end thereof, the shoe plate being supported by a lower portion of the respective upper conveyor chain.

5. The mine car reclaiming apparatus as claimed in claim 3 or 4, wherein the upper support frame is two upper support plates which are oppositely arranged, and a guide chain wheel is arranged on each of the two upper support plates;

the lower support frame comprises two lower support plates which are oppositely arranged, the lower support plates are of arc-shaped structures, and guide chain wheels are arranged on the two lower support plates.

6. The mine car reclaiming apparatus as claimed in claim 5, wherein the upper support plate is provided with a guide sprocket and a guide plate, the guide sprocket corresponding to the upper layer conveyor chain, and the guide plate being arcuate and corresponding to the lower layer conveyor chain; the lower supporting plate is provided with a plurality of guide chain wheels which are arranged in an arc shape.

7. The mine car reclaiming apparatus as claimed in claim 1, wherein the second drive section is a multi-stage hydraulic cylinder, both ends of the multi-stage hydraulic cylinder are respectively connected with the upper support frame and the support seat, and the multi-stage hydraulic cylinder drives the support seat to slide.

8. The mine car reclaiming apparatus as claimed in claim 1, wherein the expansion bracket is a diamond-shaped expansion link mechanism, and two sets of diamond-shaped expansion link mechanisms are correspondingly arranged left and right;

the rhombic telescopic connecting rod mechanism comprises a plurality of groups of connecting rod sets which are sequentially hinged end to end through first pin shafts, and each connecting rod set comprises two connecting rods which are arranged in an X shape and a second pin shaft which is arranged between the two connecting rods.

9. The mine car reclaiming apparatus as claimed in claim 8, wherein horizontal sliding grooves are provided on both the upper support frame and the lower support frame, and the first pin shafts at the upper and lower end portions of the diamond-shaped telescopic link mechanism are slidably provided in the horizontal sliding grooves; the third driving part is a pushing oil cylinder which is fixedly arranged on the upper support frame, a vertical sliding groove is formed in the upper support frame, a push plate corresponding to the second pin shaft is arranged at the action end of the pushing oil cylinder, the second pin shaft at the uppermost part of the rhombic telescopic connecting rod mechanism or the push plate is arranged in the vertical sliding groove in a matching sliding mode, and the pushing oil cylinder continuously keeps pushing force on the second pin shaft.

10. The mine car reclaiming apparatus as set forth in claim 1 wherein an endless carrier belt is disposed on both of the conveyor chains.