Material taking equipment for stock ground

Abstract

The utility model discloses a material taking device for a stock ground, and relates to the technical field of conveying, in the material taking device for the stock ground, a low rail extends along a first direction and is arranged on the ground; the high rail and the low rail are arranged in parallel at intervals, and the high rail is higher than the low rail; the two ends of the portal frame are installed on the low rail and the high rail correspondingly, the portal frame can move horizontally in the first direction, and the portal frame comprises a walking beam arranged between the low rail and the high rail; one end of the scraper conveyor is hinged to one end, arranged on the low rail, of the portal frame, and the other end is a free end; the lifting mechanism is connected with the scraper conveyor and used for driving the scraper conveyor to rotate. The rotary hinged support comprises a main body and a driving piece installed on the portal frame, the driving piece comprises a telescopic driving rod, the driving rod is connected with the main body, and the top of the main body is hinged to the end, arranged on the low rail, of the portal frame; a chute is installed at the bottom of the body. The driving piece is used for driving the chute to rotate through the body. According to the scheme, a traditional material taking mode is changed, and the material taking efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to conveying technical field, especially relate to a stockyard material taking equipment. BACKGROUND

[0002] There are a large amount of impurities in raw coal after mining, and the impurities need to be removed through a coal washing process. Before the raw coal is washed, the raw coal needs to be screened and crushed to facilitate the subsequent washing process. After the coal washing process is completed, the refined coal is stacked in a refined coal yard. When the refined coal needs to be taken, a shovel truck or a coal bucket is usually used to transport the refined coal to a conveyor belt. This material taking method is low in efficiency and cannot meet the increasingly accelerated production rhythm.

[0003] In view of this, the utility model provides a stockyard material taking equipment to solve or at least alleviate the above technical problems. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a stockyard material taking equipment to solve the technical problem of low efficiency when taking refined coal in the stockyard.

[0005] To achieve the above purpose, the utility model provides a stockyard material taking equipment, which comprises:

[0006] A low rail is arranged on the ground along a first direction;

[0007] A high rail is arranged in parallel with the low rail at an interval, and the high rail is arranged higher than the low rail;

[0008] A portal frame is installed at both ends of the low rail and the high rail, respectively, and the portal frame can translate along the first direction, and the portal frame comprises a walking beam arranged between the low rail and the high rail;

[0009] A scraper conveyor is hingedly connected to one end of the portal frame arranged on one end of the low rail, and the other end is a free end;

[0010] A lifting mechanism is connected with the scraper conveyor and used to drive the scraper conveyor to rotate;

[0011] A rotary hinge base comprises a main body and a driving member installed on the portal frame, the driving member comprises an extendable driving rod, the driving rod is connected with the main body, and the top of the main body is hingedly connected to one end of the low rail arranged on the portal frame;

[0012] A chute is installed on the bottom of the main body, and the driving member is used to drive the chute to rotate through the main body.

[0013] In an embodiment, the stockyard material taking equipment further comprises a belt conveyor, the chute comprises an inlet and an outlet, the inlet is arranged at one end of the apron conveyor close to the low rail, and the material conveyed by the apron conveyor can fall into the inlet, and the outlet is arranged below the belt conveyor, and the belt conveyor is arranged to extend along the first direction.

[0014] In an embodiment, the portal further comprises a first end frame and a second end frame, the bottom of the first end frame is mounted to the low rail, the second end frame is mounted to the high rail, and the first end frame is movable relative to the low rail along the first direction, and the second end frame is movable relative to the high rail along the first direction.

[0015] The two ends of the walking beam are connected to the first end frame and the second end frame respectively.

[0016] In an embodiment, the bottom of the first end frame is provided with two first walking mechanisms arranged at intervals, and the two first walking mechanisms are synchronously translatable along the low rail.

[0017] The bottom of the second end frame is provided with two second walking mechanisms arranged at intervals, and the two second walking mechanisms are synchronously translatable along the high rail.

[0018] In an embodiment, the first walking mechanism comprises a first driving wheel and a first driven wheel in transmission connection, the first driving wheel and the first driven wheel are in rolling contact with the low rail, one side of the two first walking mechanisms close to each other is provided with a first brake part, and the first brake part is used to contact the low rail to generate a braking effect.

[0019] The second walking mechanism comprises a second driving wheel and a second driven wheel in transmission connection, the second driving wheel and the second driven wheel are in rolling contact with the high rail, one side of the two second walking mechanisms close to each other is provided with a second brake part, and the second brake part is used to contact the high rail to generate a braking effect.

[0020] In an embodiment, one side of the two first walking mechanisms away from each other is respectively provided with a first cleaning part.

[0021] One side of the two second walking mechanisms away from each other is respectively provided with a second cleaning part.

[0022] In an embodiment, one side of the two first cleaning parts away from each other is respectively provided with a first buffer part.

[0023] One side of the two second cleaning parts away from each other is respectively provided with a second buffer part.

[0024] In an embodiment, the scraper conveyor comprises an arm support, a driving shaft, a driven shaft, a driving sprocket, a driven sprocket, a conveying chain, a scraper, a driving motor and a speed reducer;

[0025] One end of the arm support is hinged to the first end support, and the other end is a free end. The driving shaft and the driven shaft are respectively rotatably installed at the two ends of the arm support. The driving sprocket is sleeved on the driving shaft and rotates with the driving shaft. The driven sprocket is sleeved on the driven shaft and synchronously rotates with the driven shaft. The conveying chain is arranged around the driving sprocket and the driven sprocket and synchronously rotates with the driving sprocket and the driven sprocket.

[0026] The number of the scrapers is multiple. The multiple scrapers are arranged at intervals along the outer periphery of the conveying chain and synchronously move with the conveying chain.

[0027] The driving motor is installed on the first end support. The driving motor is drivingly connected with the driving shaft through the speed reducer.

[0028] In an embodiment, the scraper conveyor further comprises a tensioning mechanism. The tensioning mechanism is installed on one end of the arm support close to the driven shaft.

[0029] The tensioning mechanism comprises a telescopic cylinder, a transmission rod, a pressure plate and a spring. The telescopic cylinder comprises a cylinder body and a telescopic rod. The cylinder body is installed on the arm support. The telescopic rod is directed towards the driven shaft. The transmission rod is coaxially arranged with the telescopic rod. One end of the transmission rod close to the driven shaft is provided with a clearance groove abutting against the driven shaft. One end of the transmission rod close to the driven shaft is provided with a receiving groove. The pressure plate is sleeved on the telescopic rod. The telescopic rod synchronously moves with the pressure plate. The spring is sleeved on the telescopic rod. One end of the spring abuts against the pressure plate, and the other end abuts against the bottom wall of the receiving groove.

[0030] In an embodiment, the lifting mechanism comprises a winch, a fixed pulley, a movable pulley, a cable and a buffer connecting rod. The winch is installed on the portal at one end of the low rail. The fixed pulley is installed on the walking beam. One end of the buffer connecting rod is hinged to the scraper conveyor, and the other end is provided with the movable pulley. The cable is sequentially wound around the fixed pulley and the movable pulley and then connected with the winch.

[0031] According to the technical solution provided by this utility model, the material handling equipment includes a low rail, a high rail, a gantry, a scraper conveyor, a lifting mechanism, a rotating hinge, and a chute. The low rail extends along a first direction and is disposed on the ground; the high rail is parallel to and spaced apart from the low rail, with the high rail positioned higher than the low rail; both ends of the gantry are respectively installed on the low rail and the high rail, and the gantry can translate along the first direction, and the gantry includes a traveling beam disposed between the low rail and the high rail; one end of the scraper conveyor is hinged to the end of the gantry disposed on the low rail, and the other end is a free end; the lifting mechanism is connected to the scraper conveyor and is used to drive the scraper conveyor to rotate; the rotating hinge includes a main body and a driving component mounted on the gantry, the driving component including a retractable driving rod connected to the main body, the top of the main body being hinged to the end of the gantry disposed on the low rail; a chute is installed at the bottom of the main body, and the driving component is used to drive the chute to rotate through the main body. With this configuration, the lifting mechanism can drive the scraper conveyor to rotate around the hinge point of the lower rail, thus making the angle of the scraper conveyor adjustable. The angle of the scraper conveyor can be adjusted according to the height of the material pile, and the scraper conveyor can also translate along with the gantry in the first direction, thereby picking up material from piles at different locations and transporting the material to the chute. The chute can rotate under the action of the rotating hinge to adapt to the angle of the scraper conveyor, preventing material spillage. This configuration changes the traditional material handling method and improves material handling efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of a structure of an embodiment of the material handling equipment provided by this utility model;

[0034] Figure 2 for Figure 1 A schematic diagram of the side structure;

[0035] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0036] Figure 4 for Figure 1 A schematic diagram of the structure of an embodiment of the second end frame in the material yard reclaiming equipment shown;

[0037] Figure 5 for Figure 1 A schematic diagram of the combined structure of the lifting mechanism and scraper conveyor in an embodiment of the material handling equipment shown in the diagram;

[0038] Figure 6 For Figure 5 Enlarged structural schematic view at B in the middle;

[0039] Figure 7 For Figure 1 Combination structure schematic view of an embodiment of the chute and rotary hinge base in the stockyard material taking equipment shown.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 110, belt conveyor; 120, low rail; 130, high rail; 140, first end frame; 141, first walking mechanism; 1411, first cleaning part; 1412, first buffering part; 1413, first braking part; 1414, first servo motor; 1415, first driving wheel; 1416, first driven wheel; 150, walking beam; 151, second end frame; 152, second walking mechanism; 1521, second cleaning part; 1522, second buffering part; 1523, second braking part; 1524, second servo motor; 1525, second driving wheel; 1526, second driven wheel; 160, chute; 170, scraper conveyor; 171, arm frame; 172, driving shaft; 173, driven shaft; 174, driving sprocket; 175, driven sprocket; 176, conveying chain; 177, scraper; 178, tensioning mechanism; 1781, telescopic cylinder; 1782, transmission rod; 1783, pressure receiving plate; 1784, spring; 180, lifting mechanism; 181, buffering connecting rod; 182, movable pulley; 183, fixed pulley; 184, hoisting device; 190, rotary hinge base; X, first direction.

[0042] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0044] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0045] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0046] After the raw coal is mined out, it often contains a large amount of soil, rock and other impurities, which will seriously affect the quality and combustion efficiency of the coal. Therefore, the raw coal needs to be washed by the coal washing process to remove these impurities. Before washing coal, in order to facilitate the subsequent washing process, workers usually screen and crush the raw coal. Screening can separate raw coal of different particle sizes to facilitate subsequent cleaning; and crushing is to break large pieces of raw coal into smaller particles, so that it is easier to clean and remove impurities. After screening and crushing, the raw coal enters the coal washing equipment, and through a series of physical and chemical processes, the impurities are separated from the coal, and finally the pure refined coal is obtained. These refined coal is then stacked in a special refined coal yard for subsequent use.

[0047] When the refined coal is stacked in the refined coal yard, its management and use become an important link. According to the applicant's observation and research, it is found that the current commonly used material taking mode, such as using a forklift or a coal bucket to transport the refined coal to a conveyor, has the problem of low efficiency. The forklift operation needs manual intervention, which not only wastes time and effort, but also in the face of large-scale material pile, it is difficult to realize fast and accurate material taking. Although the coal bucket can be operated automatically, its material taking speed and accuracy are limited by the mechanical structure and control system. With the increasing production rhythm, this inefficient material taking mode has been difficult to meet the production demand, and has become a key factor restricting the improvement of production efficiency.

[0048] In view of this, the utility model provides a material yard material taking equipment to solve the above technical problems.

[0049] Please refer to Figure 1 , Figure 2 and Figure 7In an embodiment of the utility model, the stockyard material taking equipment includes low rail 120, high rail 130, portal, scraper conveyor 170, lifting mechanism 180, rotary hinge base 190 and chute 160. Among them, low rail 120 is arranged on the ground along the first direction X, and the first direction X is as shown by the arrow X in the figure Figure 2 ; high rail 130 is arranged in parallel with low rail 120 with a spacing, and high rail 130 is arranged higher than low rail 120; the two ends of the portal are respectively installed on low rail 120 and high rail 130, and the portal can translate along the first direction X, and the portal includes walking beam 150 arranged between low rail 120 and high rail 130; one end of scraper conveyor 170 is hinged to the portal arranged on low rail 120, and the other end is a free end; lifting mechanism 180 is connected with scraper conveyor 170 and is used to drive scraper conveyor 170 to rotate; rotary hinge base 190 includes a main body and a driving member installed on the portal, and the driving member includes an extendable driving rod, the driving rod is connected with the main body, and the top of the main body is hinged to one end of the portal arranged on low rail 120; the bottom of the main body is provided with chute 160, and the driving member is used to drive chute 160 to rotate through the main body.

[0050] Specifically, the portal can move along the first direction X on low rail 120 and high rail 130, thereby driving scraper conveyor 170, lifting mechanism 180, rotary hinge base 190 and chute 160 to move along the first direction X, so that scraper conveyor 170 can scrape fine washed coal at different positions in the first direction X. While moving along the first direction X, the angle of scraper conveyor 170 is adjusted according to the height of the fine washed coal material pile, so that the fine washed coal can be scraped layer by layer from top to bottom. The driving member in rotary hinge base 190 can adjust the extension length of the driving rod according to the angle of scraper conveyor 170, so that the angle of chute 160 can be suitable for receiving the fine washed coal provided by scraper conveyor 170. Among them, the driving member can be one of hydraulic oil cylinder and air cylinder.

[0051] Through the technical scheme provided in the embodiment, lifting mechanism 180 can drive scraper conveyor 170 to rotate around the hinge point of low rail 120, so that the angle of scraper conveyor 170 is adjustable, the angle of scraper conveyor 170 is adjusted according to the height of the material pile, and scraper conveyor 170 can translate along the first direction X with the portal, so as to take material from different positions of the material pile and transport the material to chute 160, and chute 160 can rotate under the action of rotary hinge base 190 to adapt to the angle of scraper conveyor 170, so as to avoid material spilling. This setting changes the traditional material taking mode and improves the material taking efficiency.

[0052] Further, in an embodiment of the utility model, the stockyard material taking equipment further includes a belt conveyor 110, the chute 160 includes a feeding port and a discharging port, the feeding port is arranged corresponding to the one end of the scraper conveyor 170 close to the low rail 120, the material conveyed by the scraper conveyor 170 can fall into the feeding port, the belt conveyor 110 is arranged below the discharging port, and the belt conveyor 110 is arranged along the first direction X. Please refer to Figure 1 And Figure 2 The belt conveyor 110 is arranged below the chute 160, the belt conveyor 110 can convey the fine washed coal discharged from the chute 160 to outside the stockyard, thereby further improving the conveying efficiency of the fine washed coal.

[0053] In an embodiment of the utility model, the portal further includes a first end frame 140 and a second end frame 151, the bottom of the first end frame 140 is mounted to the low rail 120, the second end frame 151 is mounted to the high rail 130, the first end frame 140 can move along the first direction X relative to the low rail 120, and the second end frame 151 can move along the first direction X relative to the high rail 130; the two ends of the walking beam 150 are connected with the first end frame 140 and the second end frame 151 respectively. Wherein, a staircase is arranged on the walking beam 150 to facilitate the maintenance of the staff. The first end frame 140, the walking beam 150 and the second end frame 151 jointly constitute a half portal beam frame, which can save space to a certain extent and is conducive to the design of other structures of the stockyard, such as the belt unloading vehicle and the airplane belt.

[0054] In an embodiment of the utility model, the bottom of the first end frame 140 is provided with two first walking mechanisms 141 arranged at intervals, and the two first walking mechanisms 141 can translate along the low rail 120 synchronously; the bottom of the second end frame 151 is provided with two second walking mechanisms 152 arranged at intervals, and the two second walking mechanisms 152 can translate along the high rail 130 synchronously. Please refer to Figures 2 to 4 The first walking mechanism 141 can translate along the low rail 120, the second walking mechanism 152 can translate along the high rail 130, the first walking mechanism 141 drives the rest of the first end frame 140 to translate, the second walking mechanism 152 drives the rest of the second end frame 151 to translate, and the first end frame 140 and the second end frame 151 jointly drive the walking beam 150 to translate. The number of the first walking mechanism 141 and the second walking mechanism 152 is two, and the two first walking mechanisms 141 are arranged at intervals, and the two second walking mechanisms 152 are also arranged at intervals, which is conducive to improving the stability of the first end frame 140 and the second end frame 151 when translating, thereby improving the stability of the whole portal when translating.

[0055] In the embodiment of the utility model, the first walking mechanism 141 comprises the first driving wheel 1415 and the first driven wheel 1416 which are in transmission connection, the first driving wheel 1415 and the first driven wheel 1416 are in rolling and close contact with the low rail 120, one of the two first walking mechanisms 141 which are close to each other is provided with a first brake part 1413, the first brake part 1413 is used to contact the low rail 120 to produce a brake effect, the second walking mechanism 152 comprises the second driving wheel 1525 and the second driven wheel 1526 which are in transmission connection, the second driving wheel 1525 and the second driven wheel 1526 are in rolling and close contact with the low rail 120, one of the two second walking mechanisms 152 which are close to each other is provided with a second brake part 1523, the second brake part 1523 is used to contact the high rail 130 to produce a brake effect. Please refer to Figure 3 With Figure 4 The first driving wheel 1415 is driven to rotate by the first servo motor 1414 arranged in the first walking mechanism 141, thereby driving the first driven wheel to rotate, and further enabling the first walking mechanism 141 to move along the low rail 120, the first servo motor 1414 is arranged between the first driving wheel 1415 and the first driven wheel 1416; similarly, the second driving wheel 1525 is driven to rotate by the second servo motor 1524 arranged in the second walking mechanism 152, thereby driving the second driven wheel 1526 to rotate, and further enabling the second walking mechanism 152 to move along the high rail 130, the second servo motor 1524 is arranged between the second driving wheel 1525 and the second driven wheel 1526. The first brake part 1413 can brake the first end beam, and the second brake part 1523 can brake the second end beam, by arranging the first brake part 1413 between the two first walking mechanisms 141 and arranging the second brake part 1523 between the two second walking mechanisms 152, the brake force generated during braking is located as much as possible between the two first walking mechanisms 141 and the two second walking mechanisms 152, so as to avoid that the force arm between the walking beam 150 and the force point of the brake force is too long, an excessive overturning moment is generated, and the walking beam 150 is overturned. The first brake part 1413 and the second brake part 1523 comprise one of a connecting rod brake mechanism and a brake support rod.

[0056] In the embodiment of the utility model, the mutually diverging sides of the two first walking mechanisms 141 are respectively provided with a first cleaning part 1411; the mutually diverging sides of the two second walking mechanisms 152 are respectively provided with a second cleaning part 1521. The first cleaning part 1411 is used for cleaning dust or obstacles in the low rail 120, and the second cleaning part 1521 is used for cleaning dust or obstacles in the high rail 130, wherein the sweeping head at the bottom of the first cleaning part 1411 and the second cleaning part 1521 comprises one of a brush, a disc brush and a high-pressure water outlet head. By providing the first cleaning part 1411 and the second cleaning part 1521, the first walking mechanism 141 can smoothly move along the low rail 120, and the second walking mechanism 152 can smoothly move along the high rail 130.

[0057] In addition, in the embodiment of the utility model, the mutually diverging sides of the two first cleaning parts 1411 are respectively provided with a first buffer part 1412; the mutually diverging sides of the two second cleaning parts 1521 are respectively provided with a second buffer part 1522. Please refer to Figure 3 With Figure 4 By providing the two first buffer parts 1412, when any one of the first walking mechanisms 141 is impacted, the corresponding first buffer part 1412 can provide a certain buffering effect, so that the first walking mechanism 141 is not directly impacted and damaged. At the same time, by providing the two second buffer parts 1522, when any one of the second walking mechanisms 152 is impacted, the corresponding second buffer part 1522 can provide a certain buffering effect, so that the second walking mechanism 152 is not directly impacted and damaged. Wherein the first buffer part 1412 and the second buffer part 1522 comprise one of a spring 1784 shock absorber, a rubber shock absorber.

[0058] Please refer to Figures 5 to 6In an embodiment of the utility model, the scraper conveyor 170 includes an arm support 171, a driving shaft 172, a driven shaft 173, a driving sprocket 174, a driven sprocket 175, a conveying chain 176, scrapers 177, a driving motor and a speed reducer; one end of the arm support 171 is hinged to the first end frame 140, the other end is a free end, the two ends of the arm support 171 are rotatably installed with the driving shaft 172 and the driven shaft 173, the driving sprocket 174 is sleeved on the driving shaft 172, and the driving sprocket 174 rotates with the driving shaft 172, the driven sprocket 175 is sleeved on the driven shaft 173, and the driven sprocket 175 rotates synchronously with the driven shaft 173, the conveying chain 176 is wound on the driving sprocket 174 and the driven sprocket 175, and the conveying chain 176 rotates synchronously with the driving sprocket 174 and the driven sprocket 175; the number of the scrapers 177 is multiple, the multiple scrapers 177 are arranged at intervals along the outer periphery of the conveying chain 176, and the scrapers 177 move synchronously with the conveying chain 176; the driving motor is installed on the first end frame 140, and the driving motor is drivingly connected with the driving shaft 172 through the speed reducer. The arm support 171 serves as a framework and is used for supporting the driving shaft 172, the driven shaft 173, the driving sprocket 174, the driven sprocket 175, the conveying chain 176, the scrapers 177 and the tensioning mechanism 178. The multiple scrapers 177 are evenly installed on the conveying chain 176 along the circumferential direction of the conveying chain 176. Each scraper 177 can move with the conveying chain 176 and is used for scraping coal lumps on the top of the fine washing coal pile. The driving motor includes a motor shaft, the speed reducer includes an input shaft and an output shaft, the input shaft is connected with the motor shaft, the output shaft is connected with the driving shaft 172 through a key structure, the input shaft rotates synchronously with the motor shaft, and the output shaft rotates synchronously with the driving shaft 172. Power is provided by the driving motor, the driving shaft 172 and the driving sprocket 174 are driven to rotate through the speed reducer, the conveying chain 176 is further driven to rotate, and the driven sprocket 175 and the driven shaft 173 are driven to rotate. The fine washing coal in the coal yard is scraped by the scrapers 177, and the fine washing coal is transferred to the belt conveyor 110 on the ground by the conveying chain 176 and the scrapers 177. The speed reducer can increase the output torque while reducing the rotating speed.

[0059] Further, refer to Figure 6In an embodiment of the utility model, the scraper conveyor 170 further includes a tensioning mechanism 178, the tensioning mechanism 178 is installed in the arm support 171 near one end of the driven shaft 173;The tensioning mechanism 178 includes telescopic cylinder 1781, transmission rod 1782, pressure plate 1783 and spring 1784, telescopic cylinder 1781 includes cylinder body and telescopic rod, the cylinder body is installed in the arm support 171, and the telescopic rod is towards driven shaft 173, transmission rod 1782 is coaxially arranged with telescopic rod, and the one end of transmission rod 1782 near driven shaft 173 is provided with the accommodation slot that is attached with driven shaft 173, the one end of transmission rod 1782 near driven shaft 173 is provided with the accommodation slot, pressure plate 1783 is set on telescopic rod, and telescopic rod and pressure plate 1783 move synchronously, spring 1784 is set on telescopic rod, and one end of spring 1784 and pressure plate 1783 abut, and the other end and the bottom wall of accommodation slot abut. Through this setting, when the telescopic rod of telescopic cylinder 1781 is elongated, spring 1784 is extruded by pressure plate 1783, and then the first transmission rod 1782 is driven to push driven shaft 173 and driven sprocket 175 and moves away from drive shaft 172, and the precise control of force is realized.Spring 1784 can absorb certain impact force by its deformation, which is conducive to reducing vibration and noise. The tensioning degree of conveying chain 176 is adjusted by tensioning mechanism 178, so that conveying chain 176 maintains proper sag, avoids abnormal meshing, tooth skipping and chain separation phenomenon, reduces vibration intensity and noise in the running process of chain, ensures that conveying chain 176 runs more smoothly, improves conveying efficiency, and further improves fine coal transfer efficiency. At the same time, the wear of two kinds of sprocket is reduced.

[0060] In the embodiment of the utility model, the lifting mechanism 180 includes winch device 184, fixed pulley 183, movable pulley 182, cable and buffer connecting rod 181, winch device 184 is installed in the portal and is arranged in one end of low rail 120, fixed pulley 183 is installed in walking beam 150, one end of buffer connecting rod 181 is articulated in scraper conveyor 170, the other end is installed with movable pulley 182, and the cable is connected with winch device 184 after passing fixed pulley 183 and movable pulley 182 in turn. Specifically, winch device 184 is installed in first end frame 140, and moves along with first end frame 140, when winch device 184 winds cable, the end of boom 171 away from the head frame swings upward, and when winch device 184 releases cable, the end of boom 171 away from the head frame swings downward. When taking fine washed coal in the stockyard, the uppermost fine washed coal layer is taken first, and then the lower fine washed coal layer is taken. Winch device 184 is provided with two modes of fast ascending and slow descending, which are realized by changing the working frequency of the variable frequency motor of winch device 184. When the upper fine washed coal layer is taken, the slow descending mode is used to prepare for taking the next fine washed coal layer, and when all fine washed coal layers are taken, the fast ascending mode is used to prepare for lifting to the maximum height. Overall, the transfer efficiency of fine washed coal in the stockyard is further improved. Winch device 184 includes one of winch and electric capstan, and preferably uses winch. It should be noted that, by using buffer connecting rod 181, movable pulley 182 does not need to be installed to the inside of boom 171, thereby reducing the installation and replacement difficulty of movable pulley 182, in addition, the setting of buffer connecting rod 181 can reduce the impact force suffered by boom 171 in the fast ascending mode, therefore buffer connecting rod 181 not only plays a role of transmitting torque, so that boom 171 can be smoothly pulled up, but also absorbs kinetic energy, preventing boom 171 from being pulled off due to the excessive sudden applied pulling force. Buffer connecting rod 181 includes one of spring 1784 buffer rod and traction buffer device.

[0061] In an embodiment, the stockyard material taking equipment further includes a PLC, which is electrically connected with each first walking mechanism 141, each second walking mechanism 152, the belt conveyor 110, the scraper conveyor 170 and the lifting mechanism 180 respectively, so as to control whether each first walking mechanism 141, each second walking mechanism 152, the belt conveyor 110, the scraper conveyor 170 and the lifting mechanism 180 work.

[0062] The above merely describes exemplary embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A material yard taking-out apparatus characterized by comprising: The application relates to a material yard taking equipment, which comprises a low rail arranged on the ground and extending along a first direction; a high rail arranged in parallel with the low rail and higher than the low rail; a portal having two ends respectively mounted on the low rail and the high rail, the portal being capable of translating along the first direction, and the portal comprising a walking beam arranged between the low rail and the high rail; a scraper conveyor having one end hinged to the portal and arranged on one end of the low rail and the other end being a free end; a lifting mechanism connected with the scraper conveyor and used for driving the scraper conveyor to rotate; a rotary hinge base comprising a main body and a driving member mounted on the portal, the driving member comprising an extendable driving rod connected with the main body, the top of the main body being hinged to one end of the low rail arranged on the portal; and a chute arranged on the bottom of the main body and driven by the main body to rotate. The material yard taking equipment further comprises a belt conveyor, the chute comprises an inlet and an outlet, the inlet is arranged on one end of the scraper conveyor close to the low rail, and the material conveyed by the scraper conveyor can fall into the inlet, and the outlet is arranged below the belt conveyor extending along the first direction. The portal further comprises a first end frame and a second end frame, the bottom of the first end frame is mounted on the low rail, the second end frame is mounted on the high rail, the first end frame is capable of moving along the first direction relative to the low rail, and the second end frame is capable of moving along the first direction relative to the high rail. The walking beam is connected with the first end frame and the second end frame at two ends respectively. The bottom of the first end frame is provided with two first walking mechanisms arranged in parallel, and the two first walking mechanisms are capable of synchronously translating along the low rail. The bottom of the second end frame is provided with two second walking mechanisms arranged in parallel, and the two second walking mechanisms are capable of synchronously translating along the high rail. The first walking mechanism comprises a first driving wheel and a first driven wheel in transmission connection, the first driving wheel and the first driven wheel are in rolling contact with the low rail, one first braking part is arranged on one side of the two first walking mechanisms close to each other, and the first braking part is used for contacting the low rail to generate a braking effect. The second walking mechanism comprises a second driving wheel and a second driven wheel in transmission connection, the second driving wheel and the second driven wheel are in rolling contact with the low rail, one second braking part is arranged on one side of the two second walking mechanisms close to each other, and the second braking part is used for contacting the high rail to generate a braking effect.

2. A material receiving device according to claim 1, characterized in that The mutually diverging sides of the two first walking mechanisms are respectively provided with a first cleaning part.

3. A material receiving device according to claim 1, characterized in that The mutually diverging sides of the two second walking mechanisms are respectively provided with a second cleaning part. The mutually diverging sides of the two first cleaning parts are respectively provided with a first buffer part.

4. A material receiving device according to claim 3, characterized in that The mutually diverging sides of the two second cleaning parts are respectively provided with a second buffer part. ​ 5. A material receiving device according to claim 4, characterized in that ​ ​ 6. A material receiving device according to claim 4, characterized in that ​ ​ 7. A material receiving device according to claim 6, characterized in that ​ ​ 8. A material receiving device according to claim 3, characterized in that The scraper conveyor comprises an arm support, a driving shaft, a driven shaft, a driving sprocket, a driven sprocket, a conveying chain, a scraper, a driving motor and a speed reducer; One end of the arm support is hinged to the first end support, and the other end is a free end. The driving shaft and the driven shaft are respectively rotatably installed at the two ends of the arm support. The driving sprocket is sleeved on the driving shaft and rotates with the driving shaft. The driven sprocket is sleeved on the driven shaft and synchronously rotates with the driven shaft. The conveying chain is arranged around the driving sprocket and the driven sprocket and synchronously rotates with the driving sprocket and the driven sprocket. The scraper conveyor comprises a plurality of scrapers. The scrapers are arranged at intervals along the outer periphery of the conveying chain and synchronously move with the conveying chain. The driving motor is installed on the first end support. The driving motor is drivingly connected with the driving shaft through the speed reducer.

9. A material receiving device according to claim 8, characterized in that The scraper conveyor further comprises a tensioning mechanism installed on one end of the arm support close to the driven shaft. The tensioning mechanism comprises a telescopic cylinder, a transmission rod, a pressure plate and a spring. The telescopic cylinder comprises a cylinder body and a telescopic rod. The cylinder body is installed on the arm support, and the telescopic rod faces the driven shaft. The transmission rod is coaxially arranged with the telescopic rod. One end of the transmission rod close to the driven shaft is provided with a clearance groove abutting against the driven shaft. One end of the transmission rod close to the driven shaft is provided with a containing groove. The pressure plate is sleeved on the telescopic rod. The telescopic rod synchronously moves with the pressure plate. The spring is sleeved on the telescopic rod. One end of the spring abuts against the pressure plate, and the other end abuts against the bottom wall of the containing groove.

10. A material receiving device according to any one of claims 1 to 9, characterized in that, The lifting mechanism comprises a winch, a fixed pulley, a movable pulley, a cable and a buffer connecting rod. The winch is installed on the portal at one end of the low rail. The fixed pulley is installed on the walking beam. One end of the buffer connecting rod is hinged to the scraper conveyor, and the other end is provided with the movable pulley. The cable is sequentially wound around the fixed pulley and the movable pulley and then connected with the winch.

Images