CN112027578A - Clear coal device and scraper conveyor nut fastening system - Google Patents

Clear coal device and scraper conveyor nut fastening system Download PDF

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Publication number
CN112027578A
CN112027578A CN202010766436.7A CN202010766436A CN112027578A CN 112027578 A CN112027578 A CN 112027578A CN 202010766436 A CN202010766436 A CN 202010766436A CN 112027578 A CN112027578 A CN 112027578A
Authority
CN
China
Prior art keywords
coal cleaning
driving
coal
scraper
fastening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010766436.7A
Other languages
Chinese (zh)
Inventor
刘俊
樊建军
高丽霞
杨涛
于平
谢地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi Coal Mining Machinery Manufacturing Co ltd
Original Assignee
Shanxi Coal Mining Machinery Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanxi Coal Mining Machinery Manufacturing Co ltd filed Critical Shanxi Coal Mining Machinery Manufacturing Co ltd
Priority to CN202010766436.7A priority Critical patent/CN112027578A/en
Publication of CN112027578A publication Critical patent/CN112027578A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G45/00Lubricating, cleaning, or clearing devices
    • B65G45/10Cleaning devices
    • B65G45/20Cleaning devices comprising screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18Details
    • B65G19/22Impellers, e.g. push-plates, scrapers; Guiding means therefor
    • B65G19/24Attachment of impellers to traction element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G45/00Lubricating, cleaning, or clearing devices
    • B65G45/10Cleaning devices
    • B65G45/22Cleaning devices comprising fluid applying means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G45/00Lubricating, cleaning, or clearing devices
    • B65G45/10Cleaning devices
    • B65G45/24Cleaning devices comprising plural diverse cleaning devices

Abstract

The invention discloses a coal cleaning device and a screw nut fastening system of a scraper conveyor, wherein the coal cleaning device comprises: frame, first baffle, first extensible member, first driving piece, drive mechanism, clear coal pole and spiral clear coal mechanism. The bottoms of the two ends of the frame are fixed on the groove side of the scraper conveyor. The bottom of first extensible member is connected with first baffle, and the top is connected with the top of frame. The first driving part is arranged on the first guide plate, and the coal cleaning rod is arranged below the first guide plate and connected with an output shaft of the first driving part or connected with the output shaft of the first driving part through a transmission mechanism and used for rotating under the driving of the first driving part. The coal cleaning rod is sleeved with a spiral coal cleaning mechanism, the inner diameter of the spiral coal cleaning mechanism is matched with the size of the nut, and the spiral coal cleaning mechanism is used for moving downwards to be sleeved on the nut and then cleaning coal materials along with the rotation of the coal cleaning rod. The coal cleaning device and the nut fastening system of the scraper conveyor reduce the consumption of manpower and material resources, improve the working efficiency, and have reliable action, safety and high efficiency.

Description

Clear coal device and scraper conveyor nut fastening system
Technical Field
The invention relates to the technical field of coal mine equipment, in particular to a coal cleaning device and a nut fastening system of a scraper conveyor.
Background
The scraper conveyor is the main transportation equipment for fully mechanized coal mining, and the scraper chain is a core driving part of the conveyor and mainly comprises a circular chain, scrapers, a cross beam and nuts. The scraper and the cross beam are paired and are fastened on the round-link chain through nuts and bolts at certain intervals. After the scraper conveyor is used for a period of time, nuts on the scraper conveyor are loosened, so that the nuts of the scraper conveyor need to be fastened periodically.
When the nut is fastened, a pit where the nut on the scraper is located can often stagnate some coal materials, and the nut can be fastened through a matched wrench or other fastening devices after the coal materials around the nut need to be removed. The scraper needing to be fastened on the scraper chain of the scraper conveyor usually has five to six hundred pieces, nearly two thousand nuts need to be cleaned and then fastened, and the scraper is mainly cleaned manually at present, so that time and labor are wasted.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a coal cleaning device and a nut fastening system of a scraper conveyor. The specific technical scheme is as follows:
in a first aspect, there is provided a coal cleaning apparatus, the apparatus comprising: the coal cleaning device comprises a rack, a first guide plate, a first telescopic part, a first driving part, a transmission mechanism, a coal cleaning rod and a spiral coal cleaning mechanism; the bottoms of the two ends of the rack are fixed on the groove side of the scraper conveyor; the bottom end of the first telescopic part is connected with the first guide plate, and the top end of the first telescopic part is connected with the top end of the rack; the first driving part is arranged on the first guide plate, and the coal cleaning rod is arranged below the first guide plate, is connected with an output shaft of the first driving part or is connected with the output shaft of the first driving part through a transmission mechanism and is driven by the first driving part to rotate; the coal cleaning rod is sleeved with a spiral coal cleaning mechanism, the inner diameter of the spiral coal cleaning mechanism is matched with the size of the nut, and the spiral coal cleaning mechanism is used for moving downwards to be sleeved on the nut and then rotating along with the coal cleaning rod to clean coal materials.
In one possible design, the number of the first driving members is 1, the number of the coal cleaning rods is 3, and the transmission mechanism comprises a first transmission belt and a second transmission belt: one coal cleaning rod is located below the first driving piece and connected with an output shaft of the first driving piece, and the coal cleaning rods on two sides are connected with the output shaft of the first driving piece through the first transmission belt and the second transmission belt respectively.
In one possible design, the coal cleaning device further comprises a hydraulic coal cleaning mechanism, the hydraulic coal cleaning mechanism is of a through hollow structure, an annular water spraying part matched with the coal cleaning rod is arranged in the middle of the hydraulic coal cleaning mechanism, a water spraying hole is arranged below the water spraying part, and a water inlet and a water outlet are respectively arranged at two ends of the hydraulic coal cleaning mechanism; the two ends of the hydraulic coal cleaning mechanism are provided with mounting plates which are fixed on the rack, and the water spraying part is sleeved on the coal cleaning rod and does not interfere with the up-and-down movement of the coal cleaning rod.
In a possible design, the number of the water spraying holes on each water spraying part is multiple, and the water spraying holes are uniformly distributed along the circumferential direction of the water spraying part.
In a second aspect, a screw nut fastening system of a scraper conveyor is provided, which includes the coal cleaning device described in any one of the above, and further includes: a fastening device, a position detection device and a control device; the position detection device is arranged on the side wall of the ledge of the scraper conveyor; the coal cleaning device and the fastening device are arranged on the rack and are positioned above the scraper chain; the control device is respectively connected with the coal cleaning device, the fastening device, the position detection device and the scraper chain driving device; the position detection device is used for detecting the position of the scraper and sending a first arrival signal to the control device when the scraper arrives below the coal cleaning device, and sending a second arrival signal to the control device when the scraper arrives below the fastening device; the control device is used for controlling the scraper chain driving device to operate, controlling the scraper chain driving device to stop and controlling the coal cleaning device to act to clean coal on the scraper nut after receiving the first arrival signal, then controlling the scraper chain driving device to continue to act, and controlling the scraper chain driving device to stop and controlling the fastening device to act to fasten the scraper nut after receiving the second arrival signal.
In one possible design, the rack includes: the device comprises a front H-shaped plate, a rear H-shaped plate, a U-shaped plate, two upper connecting plates, two lower connecting plates and two side connecting plates; the front H-shaped plate and the rear H-shaped plate are opposite at intervals, the U-shaped plate is positioned between the front H-shaped plate and the rear H-shaped plate, one sides of the front H-shaped plate, the U-shaped plate and the rear H-shaped plate are connected together through one upper connecting plate and one lower connecting plate, and the other sides of the front H-shaped plate, the U-shaped plate and the rear H-shaped plate are connected together through the other upper connecting plate and the other lower connecting plate; two ends of each side connecting plate are respectively connected with the lower parts of the front H-shaped plate and the U-shaped plate on the side, and mounting plates at two ends of the hydraulic coal cleaning mechanism are connected with the side connecting plates; the coal cleaning device is located between the front H-shaped plate and the U-shaped plate, and the fastening device is located between the rear H-shaped plate and the U-shaped plate.
In one possible design, the fastening device comprises: the second guide plate, the second telescopic piece, the second driving piece and the fastener; the bottom end of the second telescopic part is connected with the second guide plate, the top end of the second telescopic part is connected with the upper connecting plate, the second guide plate is limited between the rear H-shaped plate and the U-shaped plate and can move up and down under the driving of the second telescopic part; the second driving piece is arranged on the second guide plate, and the fastening piece is arranged below the second guide plate, connected with an output shaft of the second driving piece and driven by the second driving piece to rotate; the inner diameter of the fastener is matched with the nut and used for moving downwards to be sleeved on the nut to rotate the fastening nut.
In one possible design, the fastener includes: fastening sleeves, flat keys and limiting bolts; the output shaft of the second driving piece is inserted into the fastening sleeve and is connected with the fastening sleeve through a vertical flat key, a round-head long groove is formed in the other side, opposite to the flat key, of the fastening sleeve, a limiting bolt penetrates through the round-head long groove and is inserted into the output shaft of the second driving piece, an elastic piece abutting against the bottom of the second driving piece is further arranged in the fastening sleeve, and the output shaft of the second driving piece and the fastening sleeve are circumferentially fixed and can axially and relatively slide for a preset stroke; the bottom end of the fastening sleeve is provided with an inner hexagonal hole used for being sleeved on a fastening nut on the scraper nut.
In one possible design, the position detection device includes a first limit sensor for detecting the arrival of the scraper below the coal cleaning device and sending a first arrival signal to the control device, and a second limit sensor for detecting the arrival of the scraper below the fastening device and sending a second arrival signal to the control device.
The technical scheme of the invention has the following main advantages:
according to the coal cleaning device and the nut fastening system of the scraper conveyor, the nuts are cleaned through the coal cleaning device, subsequent fastening operation is facilitated, the nuts are fastened through the fastening device, sequential cleaning and fastening operation of all the nuts on the scraper chain is achieved by matching with the position detection device and the control device, the whole fastening process is performed automatically, manpower and material resource consumption is reduced, the working efficiency is improved, the operation is reliable, safety and high efficiency are achieved, and the reliability of a scraper conveyor chain transmission system of a fully mechanized mining face can be greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a nut tightening system of a scraper conveyor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a screw nut tightening system of a scraper conveyor provided in accordance with an embodiment of the present invention installed on the scraper conveyor;
FIG. 3 is a schematic structural diagram of a frame in a nut tightening system of a scraper conveyor according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a coal cleaning device in a screw nut fastening system of a scraper conveyor according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a hydraulic coal cleaning mechanism in a screw nut fastening system of a scraper conveyor provided by an embodiment of the invention;
FIG. 6 is a schematic diagram of the operation of the coal cleaning device in the screw nut tightening system of the scraper conveyor according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a fastening device in a nut fastening system of a scraper conveyor according to an embodiment of the invention;
FIG. 8 is a schematic structural view of a fastener in a nut tightening system of a scraper conveyor according to an embodiment of the invention;
FIG. 9 is a schematic diagram of the operation of a fastening device in a nut fastening system of a scraper conveyor according to an embodiment of the invention;
fig. 10 is an electro-hydraulic control schematic diagram of a control device in a nut tightening system of a scraper conveyor according to an embodiment of the invention.
Description of reference numerals:
1-frame, 11-front H-shaped plate, 12-rear H-shaped plate, 13-U-shaped plate, 14-upper connecting plate, 15-lower connecting plate, 16-side connecting plate, 2-coal cleaning device, 21-first guide plate, 22-first telescopic member, 23-first driving member, 24-transmission mechanism, 241-first transmission belt, 242-second transmission belt, 25-coal cleaning rod, 26-spiral coal cleaning mechanism, 27-hydraulic coal cleaning mechanism, 271-water spray, 272-water spray hole, 273-water inlet, 274-water outlet, 275-mounting plate, 3-fastening device, 31-second guide plate, 32-second telescopic member, 33-second driving member, 34-fastening member, 341-fastening sleeve, water-flat key 342, 342, 343-a limit bolt, 344-an elastic part, 4-a position detection device, 41-a first limit sensor, 42-a second limit sensor, 5-a control device, 6-a ledge, 7-a scraper chain, 8-a scraper chain driving device, 9-a scraper and 10-a chain wheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
First, it should be noted that "front" and "rear" in the embodiment of the present invention are based on the moving direction of the scraper chain 7, and the scraper chain 7 moves from front to rear. "up" and "down" are based on the position of the scraper chain 7, and are lower near the scraper chain 7 and upper far from the scraper chain 7.
In a first aspect, an embodiment of the present invention provides a coal cleaning device 2, as shown in fig. 4, the coal cleaning device 2 includes: the coal cleaning device comprises a first guide plate 21, a first telescopic piece 22, a first driving piece 23, a transmission mechanism 24, a coal cleaning rod 25 and a spiral coal cleaning mechanism 26. The bottom end of the first telescopic part 22 is connected with the first guide plate 21, the top end of the first telescopic part 22 is connected with the rack 1, and the first telescopic part 22 drives the first guide plate 21 to move up and down. The first driving member 23 is disposed on the first guide plate 21, and the coal cleaning rod 25 is disposed below the first guide plate 21 and connected to an output shaft of the first driving member 23 or connected to an output shaft of the first driving member 23 through a transmission mechanism 24, and is configured to rotate under the driving of the first driving member 23. The coal cleaning rod 25 is sleeved with a spiral coal cleaning mechanism 26, the inner diameter of the spiral coal cleaning mechanism 26 is matched with the size of the nut, and the spiral coal cleaning mechanism 26 is used for moving downwards to be sleeved on the nut and then rotating along with the coal cleaning rod 25 to clean coal materials in a pit where the nut is located on the scraper 9.
The spiral coal cleaning mechanism 26 is used for cleaning coal materials by contacting with nuts, wherein the fact that the inner diameter of the spiral coal cleaning mechanism 26 is matched with the size of the nuts means that the inner diameter of the spiral coal cleaning mechanism 26 can be sleeved on the periphery of the nuts and can play a coal cleaning effect, for example, the inner diameter of the spiral coal cleaning mechanism 26 can be 1-2mm larger than the diameter of the nuts.
Further, the spiral coal cleaning mechanism 26 is of a spiral structure, can rotate in the spiral direction through point contact when rotating, achieves a good coal cleaning effect, enables coal to be discharged from spiral gaps, and avoids blockage. And the spiral structure has certain elasticity, and the spiral coal cleaning mechanism 26 is compressed when the nut cannot descend to the preset position due to the blockage of the nut by the coal material in the descending process, and the spiral coal cleaning mechanism 26 gradually removes the coal material after starting to rotate, so that the effect of removing and rebounding the descending at the same time is achieved, and finally the silt at the nut can still be completely removed.
The first telescopic members 22 are used for driving the first guide plate 21 to move up and down, and in order to balance the stress, the number of the first telescopic members 22 may be two, and the two first telescopic members are respectively arranged on two sides of the first guide plate 21. The first telescoping member 22 may be a telescoping cylinder.
Further, in order to improve the coal cleaning effect, as shown in fig. 5, the coal cleaning device 2 further includes a hydraulic coal cleaning mechanism 27, the hydraulic coal cleaning mechanism 27 is a through hollow structure, an annular water spraying portion 271 adapted to the coal cleaning rod 25 is disposed in the middle of the hydraulic coal cleaning mechanism 27, a water spraying hole 272 is disposed below the water spraying portion 271, and a water inlet 273 and a water outlet 274 are disposed at two ends of the hydraulic coal cleaning mechanism 27 respectively. The two ends of the hydraulic coal cleaning mechanism 27 are provided with mounting plates 275, and when the mounting plates 275 are connected on the frame 1, the water injection part 271 is sleeved on the coal cleaning rod 25. And at this time, the water injection part 271 is positioned above the spiral coal cleaning mechanism 26, and when the coal cleaning rod 25 moves up and down along with the whole first guide plate 21, the water injection part 271 keeps still along with the hydraulic coal cleaning mechanism 27.
By the arrangement, hydraulic coal cleaning and mechanical coal cleaning are matched, so that the coal cleaning effect can be improved, the cleaned coal can be brought out along with water flow, and the blocking phenomenon is avoided.
The number of the water spraying parts 271 is matched with the number of the coal cleaning rods 25, and the number of the coal cleaning rods 25 is determined according to the number of the nuts in one row on a single scraper 9. In one embodiment, the number of nuts in a row on a single scraper 9 is 3, and correspondingly, the number of coal cleaning rods 25 and the number of water spraying parts 271 are also 3.
The number of the water spraying holes 272 under the water spraying part 271 can be set according to actual requirements, and the water spraying holes are uniformly distributed along the circumferential direction of the water spraying part 271. Fig. 5 shows the case where the number of the water jetting holes 272 is 2. The number of the water spraying holes 272 may also be 3, 4, etc., and is not particularly limited in the embodiment of the present invention.
Based on the setting, the coal cleaning working process is as follows: when the coal cleaning operation is started, the first telescopic part 22 is controlled to extend to drive the first guide plate 21 to move downwards until the spiral coal cleaning mechanism 26 is sleeved on the nut, then the first driving part 23 is controlled to operate to drive the coal cleaning rod 25 and the spiral coal cleaning mechanism 26 to rotate to clean coal materials, the hydraulic coal cleaning mechanism 27 sprays water to the nut from the water spraying hole 272 in the coal material cleaning process, the first telescopic part 22 is controlled to retract to drive the first guide plate 21 to move upwards to a non-working position after the coal cleaning is finished, the hydraulic coal cleaning mechanism 27 and the first driving part 23 are not closed temporarily, and the coal cleaning operation of the lower scraper plate 9 is prepared. When the next scraper 9 moves to the position below the coal cleaning device 2, the actions are repeated. The working principle of the coal cleaning device 2 can be seen in a schematic diagram in figure 6.
In one embodiment, the number of the first driving members 23 is one, the number of the coal cleaning rods 25 is 3, and the transmission mechanism 24 comprises a first transmission belt 241 and a second transmission belt 242; one coal cleaning rod 25 is positioned below the first driving member 23 and connected with the output shaft of the first driving member 23, and the coal cleaning rods 25 at two sides are respectively connected with the output shaft of the first driving member 23 through a first transmission belt 241 and a second transmission belt 242. Based on the clear coal in-process spiral clear coal mechanism 26 clear away the required torque when the coal charge not big, set up a first driving piece 23 and drive the rotation of several clear coal pole 25 and can satisfy the user demand, consequently, drive the clear coal pole 25 motion of both sides through first drive belt 241 and second drive belt 242, simplify equipment structure, reduce cost. The first drive member 23 may be an electric motor
In a second aspect, embodiments of the present invention provide a scraper conveyor nut tightening system, as shown in fig. 1, comprising: the coal cleaning machine comprises a frame 1, a coal cleaning device 2, a fastening device 3, a position detection device 4 and a control device 5. The two ends of the frame 1 are fixed on the ledge 6 of the scraper conveyor, and the position detection device 4 is arranged on the side wall of the ledge 6 of the scraper conveyor. The coal cleaning device 2 and the fastening device 3 are arranged on the frame 1 and above the scraper chain 7. The control device 5 is respectively connected with the coal cleaning device 2, the fastening device 3, the position detection device 4 and the scraper chain driving device 8. And the position detection device 4 is used for detecting the position of the scraper 9 and sending a first arrival signal to the control device 5 when the scraper 9 arrives below the coal cleaning device 2, and sending a second arrival signal to the control device 5 when the scraper 9 arrives below the fastening device 3. And the control device 5 is used for controlling the scraper chain driving device 8 to operate, controlling the scraper chain driving device 8 to stop and controlling the coal cleaning device 2 to act to clean coal on a nut of the scraper 9 after receiving the first arrival signal, then controlling the scraper chain driving device 8 to continue to act, and controlling the scraper chain driving device 8 to stop and controlling the fastening device 3 to act to fasten the nut of the scraper 9 after receiving the second arrival signal.
The working principle of the nut fastening system of the scraper conveyor provided by the embodiment of the invention is explained as follows:
the screw nut fastening system of the scraper conveyor is installed on the scraper conveyor, as shown in the attached figure 2, the bottoms of the two ends of the frame 1 are fixed on the ledge 6 and used as the installation base of other components, and the coal cleaning device 2 and the fastening device 3 are positioned above the scraper chain 7. The position detecting device 4 is mounted on the side wall of the ledge 6, and detects the position of the squeegee 9. The control device 5 is mounted on a side wall of the rack 1 in the example shown in fig. 2, and may be mounted on the left side, the right side, or a different place of the rack 1, and the mounting position thereof is not particularly limited. When in use, the scraper chain driving device 8 operates to drive the scraper chain 7 to move forwards; when the scraper 9 moves to the lower part of the coal cleaning device 2, the position detection device 4 sends a first arrival signal to the control device 5; the control device 5 controls the scraper chain driving device 8 to stop and controls the coal cleaning device 2 to act to clean coal on the nut of the scraper 9; after coal cleaning is finished, the scraper chain driving device 8 continues to operate to drive the scraper chain 7 to move forwards; when the scraper 9 moves below the fastening device 3, the position detection device 4 sends a second arrival signal to the control device 5; the control device 5 controls the scraper chain driving device 8 to stop and controls the fastening device 3 to act to fasten the nut. At this time, the nut fastening work on the one-piece squeegee 9 is completed. After the tightening, the scraper chain 7 continues to act until the next scraper 9 moves to the lower part of the coal cleaning device 2, and the process is repeated until the nuts on all the scrapers 9 are fastened.
In summary, according to the screw nut fastening system of the scraper conveyor provided by the embodiment of the invention, the screw nut is cleaned by the coal cleaning device 2, so that subsequent fastening operation is facilitated, the nut is fastened by the fastening device 3, sequential cleaning and fastening operation of all the screw nuts on the scraper chain 7 is realized by matching with the position detection device 4 and the control device 5, the whole fastening process is performed automatically, the consumption of manpower and material resources is reduced, the working efficiency is improved, the action is reliable, safety and high efficiency are realized, and the reliability of the scraper conveyor chain transmission system of the fully mechanized mining face can be greatly improved.
Specifically, the following provides a detailed explanation of the components of the screw nut tightening system of the scraper conveyor and the working principle thereof according to the embodiment of the present invention:
in the embodiment of the present invention, the frame 1 is fixed on the ledge 6 of the scraper conveyor, and functions as a base to provide a mounting base for other components, and for example, as shown in fig. 3, the frame 1 includes: the H-shaped plate comprises a front H-shaped plate 11, a rear H-shaped plate 12, a U-shaped plate 13, two upper connecting plates 14 and two lower connecting plates 15. Preceding H template 11 and back H template 12 interval are relative, and U template 13 is located preceding H template 11 and back H template 12 between, and preceding H template 11, U template 13 and one side of back H template 12 link together through an upper junction plate 14 and a lower junction plate 15, and the opposite side links together through another upper junction plate 14 and another lower junction plate 15. The coal cleaning device 2 is located between the front H-shaped plate 11 and the U-shaped plate 13, this space being named first guide slot, in which the coal cleaning device 2 moves up and down, as will be described in detail below. The fastening means 3 are located between the rear H-shaped plate 12 and the U-shaped plate 13, this space being denominated as a second guide slot in which the fastening means 3 move up and down, as will be described in more detail below.
Further, side connection plates 16 are respectively arranged at two sides of the lower part between the front H-shaped plate 11 and the U-shaped plate 13 and used for fixing the hydraulic coal cleaning device 2, and details are shown in the following.
In frame 1, preceding H template 11, back H template 12 and U template 13 play the space division effect as the main part of frame 1, and two upper junction plate 14 and two lower connecting plate 15 link together preceding H template 11, back H template 12 and U template 13 and constitute frame 1 wholly, wherein, can fix through the welding mode between upper junction plate 14 and lower connecting plate 15 and preceding H template 11, back H template 12 and the U template 13. The lower connecting plate 15 can be provided with through holes, correspondingly, screw holes can be formed in the ledge 6 of the scraper conveyor, and the lower connecting plate 15 can be fixed on the ledge 6 of the scraper conveyor in a nut connecting mode, so that the lower connecting plate is convenient to mount and dismount.
In the embodiment of the present invention, the coal cleaning device 2 is used for cleaning coal attached to the nut, so as to facilitate the subsequent fastening device 3 to fasten the nut, and as shown in fig. 4, for example, the coal cleaning device 2 includes: the coal cleaning device comprises a first guide plate 21, a first telescopic piece 22, a first driving piece 23, a transmission mechanism 24, a coal cleaning rod 25 and a spiral coal cleaning mechanism 26. The bottom end of the first telescopic part 22 is connected with the first guide plate 21, the top end of the first telescopic part is connected with the upper connecting plate 14, the first guide plate 21 is limited between the front H-shaped plate 11 and the U-shaped plate 13, and the first guide plate can move up and down under the driving of the first telescopic part 22. The first driving member 23 is disposed on the first guide plate 21, and the coal cleaning rod 25 is disposed below the first guide plate 21 and connected to an output shaft of the first driving member 23 or connected to an output shaft of the first driving member 23 through a transmission mechanism 24, and is configured to rotate under the driving of the first driving member 23. The coal cleaning rod 25 is sleeved with a spiral coal cleaning mechanism 26, the inner diameter of the spiral coal cleaning mechanism 26 is matched with the size of the nut, and the spiral coal cleaning mechanism 26 is used for moving downwards to be sleeved on the nut and then rotating along with the coal cleaning rod 25 to clean coal materials in a pit where the nut is located on the scraper 9.
The spiral coal cleaning mechanism 26 is used for cleaning coal materials by contacting with nuts, wherein the inner diameter of the spiral coal cleaning mechanism 26 is matched with the size of the nuts, namely the inner diameter of the spiral coal cleaning mechanism 26 is enabled to be sleeved around the nuts and to play a coal cleaning effect, for example, the inner diameter of the spiral coal cleaning mechanism 26 can be 1-2mm larger than the diameter of the nuts on the nuts.
Further, the spiral coal cleaning mechanism 26 is of a spiral structure, can rotate in the spiral direction through point contact when rotating, achieves a good coal cleaning effect, enables coal to be discharged from spiral gaps, and avoids blockage.
The first telescopic members 22 are used for driving the first guide plate 21 to move up and down in the first guide slot, and in order to balance the stress, the number of the first telescopic members 22 may be two, and the two first telescopic members are respectively arranged on two sides of the first guide plate 21 and respectively connected with the upper connecting plates 14 on two sides. The first telescoping member 22 may be a telescoping cylinder.
Further, in order to improve the coal cleaning effect, as shown in fig. 5, the coal cleaning device 2 further includes a hydraulic coal cleaning mechanism 27, the hydraulic coal cleaning mechanism 27 is a through hollow structure, an annular water spraying portion 271 adapted to the coal cleaning rod 25 is disposed in the middle of the hydraulic coal cleaning mechanism 27, a water spraying hole 272 is disposed below the water spraying portion 271, and a water inlet 273 and a water outlet 274 are disposed at two ends of the hydraulic coal cleaning mechanism 27 respectively. The two ends of the hydraulic coal cleaning mechanism 27 are provided with mounting plates 275, the frame 1 further comprises side connecting plates 16, the two ends of each side connecting plate are respectively connected with the front H-shaped plate 11 and the U-shaped plate 13, and when the mounting plates 275 are fixed on the side connecting plates 16, the water spraying parts 271 are sleeved on the coal cleaning rods 25. And at this time, the water injection part 271 is positioned above the spiral coal cleaning mechanism 26, and when the coal cleaning rod 25 moves up and down along with the whole first guide plate 21, the water injection part 271 keeps still along with the hydraulic coal cleaning mechanism 27.
By the arrangement, hydraulic coal cleaning and mechanical coal cleaning are matched, so that the coal cleaning effect can be improved, the cleaned coal can be brought out along with water flow, and the blocking phenomenon is avoided.
The number of the water spraying parts 271 is matched with the number of the coal cleaning rods 25, and the number of the coal cleaning rods 25 is determined according to the number of the nuts in one row on a single scraper 9. In one embodiment, the number of nuts in a row on a single scraper 9 is 3, and correspondingly, the number of coal cleaning rods 25 and the number of water spraying parts 271 are also 3.
The number of the water spraying holes 272 under the water spraying part 271 can be set according to actual requirements, and the water spraying holes are uniformly distributed along the circumferential direction of the water spraying part 271. Fig. 5 shows the case where the number of the water jetting holes 272 is 2. The number of the water spraying holes 272 may also be 3, 4, etc., and is not particularly limited in the embodiment of the present invention.
Based on the setting, the coal cleaning working process is as follows: after the control device 5 receives the first arrival signal, the first telescopic part 22 is controlled to extend to drive the first guide plate 21 to move downwards to the spiral coal cleaning mechanism 26 to be sleeved on the nut, then the first driving part 23 is controlled to operate to drive the coal cleaning rod 25 and the spiral coal cleaning mechanism 26 to rotate to clean coal materials, the hydraulic coal cleaning mechanism 27 sprays water to the nut from the water spraying hole 272 in the coal material cleaning process, the first telescopic part 22 is controlled to retract to drive the first guide plate 21 to move upwards to a non-working position after coal cleaning is finished, the hydraulic coal cleaning mechanism 27 and the first driving part 23 are not closed temporarily, and coal cleaning operation of the lower scraper plate 9 is prepared. When the next scraper 9 moves to the position below the coal cleaning device 2, the actions are repeated. The working principle of the coal cleaning device 2 can be seen in a schematic diagram in figure 6.
In one embodiment, the number of the first driving members 23 is one, the number of the coal cleaning rods 25 is 3, and the transmission mechanism 24 comprises a first transmission belt 241 and a second transmission belt 242; one coal cleaning rod 25 is positioned below the first driving member 23 and connected with the output shaft of the first driving member 23, and the coal cleaning rods 25 at two sides are respectively connected with the output shaft of the first driving member 23 through a first transmission belt 241 and a second transmission belt 242. Based on the clear coal in-process spiral clear coal mechanism 26 clear away the required torque when the coal charge not big, set up a first driving piece 23 and drive the rotation of several clear coal pole 25 and can satisfy the user demand, consequently, drive the clear coal pole 25 motion of both sides through first drive belt 241 and second drive belt 242, simplify equipment structure, reduce cost. The first drive member 23 may be an electric motor.
After coal cleaning is finished, the scraper 9 moves backwards to the lower part of the fastening device 3, and the nut on the scraper 9 is fastened through the fastening device 3. As an example, as shown in fig. 7, the fastening device 3 includes: a second guide plate 31, a second telescopic member 32, a second driving member 33 and a fastener 34. The bottom end of the second telescopic part 32 is connected with the second guide plate 31, the top end of the second telescopic part is connected with the upper connecting plate 14, the second guide plate 31 is limited between the rear H-shaped plate 12 and the U-shaped plate 13, and the second guide plate can move up and down under the driving of the second telescopic part 32. The second driving member 33 is disposed on the second guide plate 31, and the fastening member 34 is disposed below the second guide plate 31 and connected to an output shaft of the second driving member 33 for rotation by the second driving member 33. The fastener 34 has an inner diameter that is adapted to the nut for moving downwardly to fit over the nut to rotate the fastening nut.
The second telescopic members 32 are used for driving the second guide plate 31 to move up and down in the second guide groove, and in order to balance the stress, the number of the second telescopic members 32 may be two, and the two second telescopic members are respectively arranged on two sides of the second guide plate 31 and respectively connected with the upper connecting plates 14 on two sides. The second telescoping member 32 may be a telescoping cylinder.
The second driving member 33 may be a swing cylinder, and in one fastening operation, the swing cylinder rotates by a preset stroke to complete one-way fastening, and then reversely returns to the original position, and the one-way or several-time swing process is cyclically performed until the fastening torque reaches a set torque value, so that the nut fastening operation on a single scraper is completed, and before the next fastening operation, the swing cylinder reversely returns to the original position to prepare for fastening the next scraper 9.
In one embodiment, the number of nuts in each row on the single-piece scraper 9 is 3, correspondingly, the number of the fasteners 34 is 3, and 3 second driving members 33 are provided, and each second driving member 33 drives one fastener 34 to rotate, so that torque reliability in the fastening process is ensured.
Further, as shown in fig. 8, the fastener 34 includes: a tightening sleeve 341, a flat key 342 and a limit bolt 343. The output shaft of the second driving member 33 is inserted into the fastening sleeve 341 and connected with the fastening sleeve 341 through a vertical flat key 342, a round-head long groove is arranged on the other side of the fastening sleeve 341 opposite to the flat key 342, a limit bolt 343 is inserted into the output shaft of the second driving member 33 through the round-head long groove, an elastic member 344 abutting against the bottom of the second driving member 33 is further arranged in the fastening sleeve 341, and the output shaft of the second driving member 33 and the fastening sleeve 341 are circumferentially fixed and can axially and relatively slide for a preset stroke. The bottom end of the fastening sleeve 341 is provided with an inner hexagonal hole for being sleeved on a nut of the scraper 9 to fasten the nut.
With this arrangement, the relative circumferential position between the tightening sleeve 341 and the output shaft of the second driver 33 is restricted by the flat key 342 and no relative rotation occurs. And a certain axial sliding stroke can be provided between the fastening sleeve 341 and the output shaft of the second driving member 33, the axial sliding stroke is related to three factors, such as the length of the round-head slot, the size relationship between the flat key 342 and the key slot, the elasticity of the elastic member 344, and the like, and can be set by a person skilled in the art according to actual conditions. The second guide plate 31 can be moved downwards sufficiently by relative sliding between the fastening sleeve 341 and the second driving member 33 in a small range, and the fastening sleeve 341 is sleeved on the nut of the scraper 9 under the action of elastic force, so that complete sleeving can be ensured and damage can be avoided.
Wherein, the inner wall of the fastening sleeve 341 may be provided with a ring platform, the ring platform is located above the inner hexagonal hole, one end of the elastic component 344 abuts against the end of the output shaft of the second driving component 33, and the other end abuts against the upper side of the ring platform. The elastic member 344 may be a spring.
Based on the above arrangement, the fastening working process is as follows: after the control device 5 receives the second arrival signal, the second extensible member 32 is controlled to extend to drive the second guide plate 31 to move downwards to the bottom end of the fastening sleeve 341 and be sleeved on the nut, then the second driving member 33 is controlled to operate to drive the fastening sleeve 341 to rotate the fastening nut, after fastening is finished, the second extensible member 32 is controlled to retract to drive the second guide plate 31 to move upwards to the non-working position, and the second driving member 33 is reversely returned to the position to prepare for fastening the lower scraper 9. When the next scraper 9 moves to the position below the coal cleaning device 2, the actions are repeated. The schematic diagram of the working principle of the coal cleaning device 2 can be seen in the attached fig. 9.
In the embodiment of the present invention, the position detecting device 4 is used for determining whether the scraper 9 is moved to a position, for example, as shown in fig. 2, the position detecting device 4 includes a first limit sensor 41 and a second limit sensor 42, the first limit sensor 41 is used for detecting that the scraper 9 reaches the position below the coal cleaning device 2 and sending a first arrival signal to the control device 5, and the second limit sensor 42 is used for detecting that the scraper 9 reaches the position below the fastening device 3 and sending a second arrival signal to the control device 5. Wherein, the first limit sensor 41 is arranged on the side wall of the ledge 6 and is positioned in the same plane with the coal cleaning device 2, and the second limit sensor 42 is arranged on the side wall of the ledge 6 and is positioned in the same plane with the fastening device 3, so as to accurately collect and output position signals of the scraper 9 to the control device 5.
In the embodiment of the present invention, the control device 5 is further configured to control the operation of the scraper chain driving device 8, so that the movement of the scraper chain 7 is coordinated and synchronized with the operation of the coal cleaning device 2 and the fastening device 3, as shown in fig. 10, the scraper chain driving device 8 includes a hydraulic motor and a reducer, and the hydraulic motor is connected with the sprocket 10 through the reducer to drive the sprocket 10 to rotate, thereby driving the scraper chain 7 to rotate.
The electro-hydraulic control principle of the control device 5 can be seen in fig. 10
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A coal cleaning apparatus, characterized in that the apparatus comprises: the coal cleaning device comprises a rack, a first guide plate, a first telescopic part, a first driving part, a transmission mechanism, a coal cleaning rod and a spiral coal cleaning mechanism;
the bottoms of the two ends of the rack are fixed on the groove side of the scraper conveyor;
the bottom end of the first telescopic part is connected with the first guide plate, and the top end of the first telescopic part is connected with the top end of the rack;
the first driving part is arranged on the first guide plate, and the coal cleaning rod is arranged below the first guide plate, is connected with an output shaft of the first driving part or is connected with the output shaft of the first driving part through a transmission mechanism and is driven by the first driving part to rotate;
the spiral coal cleaning mechanism is sleeved on the coal cleaning rod, the outer diameter of the spiral coal cleaning mechanism is matched with the size of the nut, and the spiral coal cleaning mechanism is used for moving downwards to be sleeved on the nut and then rotating along with the coal cleaning rod to clean coal materials.
2. The coal cleaning device of claim 1, wherein the number of the first driving members is 1, the number of the coal cleaning rods is 3, and the transmission mechanism comprises a first transmission belt and a second transmission belt:
one coal cleaning rod is located below the first driving piece and connected with an output shaft of the first driving piece, and the coal cleaning rods on two sides are connected with the output shaft of the first driving piece through the first transmission belt and the second transmission belt respectively.
3. The coal cleaning device according to claim 1 or 2, further comprising a hydraulic coal cleaning mechanism, wherein the hydraulic coal cleaning mechanism is of a through hollow structure, an annular water injection part matched with the coal cleaning rod is arranged in the middle of the hydraulic coal cleaning mechanism, a water injection hole is arranged below the water injection part, and a water inlet and a water outlet are respectively arranged at two ends of the hydraulic coal cleaning mechanism;
the two ends of the hydraulic coal cleaning mechanism are provided with mounting plates which are fixed on the rack, and the water spraying part is sleeved on the coal cleaning rod and does not interfere with the up-and-down movement of the coal cleaning rod.
4. The coal cleaning device of claim 3, wherein the number of the water injection holes on each water injection part is multiple, and the water injection holes are uniformly distributed along the circumferential direction of the water injection part.
5. A scraper conveyor nut tightening system, characterized by comprising the coal cleaning device of any one of claims 1 to 4, and further comprising: a fastening device, a position detection device and a control device;
the position detection device is arranged on the side wall of the ledge of the scraper conveyor;
the coal cleaning device and the fastening device are arranged on the rack and are positioned above the scraper chain;
the control device is respectively connected with the coal cleaning device, the fastening device, the position detection device and the scraper chain driving device;
the position detection device is used for detecting the position of the scraper and sending a first arrival signal to the control device when the scraper arrives below the coal cleaning device, and sending a second arrival signal to the control device when the scraper arrives below the fastening device;
the control device is used for controlling the scraper chain driving device to operate, controlling the scraper chain driving device to stop and controlling the coal cleaning device to act to clean coal on the scraper nut after receiving the first arrival signal, then controlling the scraper chain driving device to continue to act, and controlling the scraper chain driving device to stop and controlling the fastening device to act to fasten the scraper nut after receiving the second arrival signal.
6. The flight conveyor nut tightening system of claim 5, wherein the frame comprises: the device comprises a front H-shaped plate, a rear H-shaped plate, a U-shaped plate, two upper connecting plates, two lower connecting plates and two side connecting plates;
the front H-shaped plate and the rear H-shaped plate are opposite at intervals, the U-shaped plate is positioned between the front H-shaped plate and the rear H-shaped plate, one sides of the front H-shaped plate, the U-shaped plate and the rear H-shaped plate are connected together through one upper connecting plate and one lower connecting plate, and the other sides of the front H-shaped plate, the U-shaped plate and the rear H-shaped plate are connected together through the other upper connecting plate and the other lower connecting plate;
two ends of each side connecting plate are respectively connected with the lower parts of the front H-shaped plate and the U-shaped plate on the side, and mounting plates at two ends of the hydraulic coal cleaning mechanism are connected with the side connecting plates;
the coal cleaning device is located between the front H-shaped plate and the U-shaped plate, and the fastening device is located between the rear H-shaped plate and the U-shaped plate.
7. The flight conveyor nut tightening system of claim 6, wherein the tightening device comprises: the second guide plate, the second telescopic piece, the second driving piece and the fastener;
the bottom end of the second telescopic part is connected with the second guide plate, the top end of the second telescopic part is connected with the upper connecting plate, the second guide plate is limited between the rear H-shaped plate and the U-shaped plate and can move up and down under the driving of the second telescopic part;
the second driving piece is arranged on the second guide plate, and the fastening piece is arranged below the second guide plate, connected with an output shaft of the second driving piece and driven by the second driving piece to rotate;
the inner diameter of the fastener is matched with the nut and used for moving downwards to be sleeved on the nut to rotate the fastening nut.
8. The flight conveyor nut tightening system of claim 7, wherein the fastener comprises: fastening sleeves, flat keys and limiting bolts;
the output shaft of the second driving piece is inserted into the fastening sleeve and is connected with the fastening sleeve through a vertical flat key, a round-head long groove is formed in the other side, opposite to the flat key, of the fastening sleeve, a limiting bolt penetrates through the round-head long groove and is inserted into the output shaft of the second driving piece, an elastic piece abutting against the bottom of the second driving piece is further arranged in the fastening sleeve, and the output shaft of the second driving piece and the fastening sleeve are circumferentially fixed and can axially and relatively slide for a preset stroke;
the bottom end of the fastening sleeve is provided with an inner hexagonal hole used for being sleeved on a fastening nut on the scraper nut.
9. The scraper conveyor nut tightening system of claim 5, wherein the position detection device includes a first limit sensor for detecting that a scraper has reached below the coal cleaning device and sending a first arrival signal to the control device, and a second limit sensor for detecting that a scraper has reached below the tightening device and sending a second arrival signal to the control device.
CN202010766436.7A 2020-08-03 2020-08-03 Clear coal device and scraper conveyor nut fastening system Pending CN112027578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010766436.7A CN112027578A (en) 2020-08-03 2020-08-03 Clear coal device and scraper conveyor nut fastening system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010766436.7A CN112027578A (en) 2020-08-03 2020-08-03 Clear coal device and scraper conveyor nut fastening system

Publications (1)

Publication Number Publication Date
CN112027578A true CN112027578A (en) 2020-12-04

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Family Applications (1)

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CN202010766436.7A Pending CN112027578A (en) 2020-08-03 2020-08-03 Clear coal device and scraper conveyor nut fastening system

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Country Link
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959409A (en) * 1982-09-30 1984-04-05 Toyoda Kihan Kk Device for mounting or demounting clamping bolt for formfra-me
CN205633899U (en) * 2016-05-03 2016-10-12 三门峡龙王庄煤业有限责任公司 Clear coal device of scraper conveyor scraper blade
CN206632634U (en) * 2017-01-24 2017-11-14 广州市德力达机械行 nut automatic screwing device
CN110814716A (en) * 2019-11-01 2020-02-21 深圳市圆梦精密技术研究院 Nut screwing device and nut screwing mechanism thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959409A (en) * 1982-09-30 1984-04-05 Toyoda Kihan Kk Device for mounting or demounting clamping bolt for formfra-me
CN205633899U (en) * 2016-05-03 2016-10-12 三门峡龙王庄煤业有限责任公司 Clear coal device of scraper conveyor scraper blade
CN206632634U (en) * 2017-01-24 2017-11-14 广州市德力达机械行 nut automatic screwing device
CN110814716A (en) * 2019-11-01 2020-02-21 深圳市圆梦精密技术研究院 Nut screwing device and nut screwing mechanism thereof

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