A steel cord flexible, retractable belt conveyor

Abstract

The application relates to a steel wire flexible traction telescopic belt conveyor, and belongs to the technical field of material conveying equipment. The steel wire flexible traction telescopic belt conveyor comprises a tail, a belt telescopic inner frame, a belt outer frame, a steel wire rope traction assembly and a conveying belt. The tail is installed at the front end of the belt telescopic inner frame, the belt telescopic inner frame is slidingly installed at the front end of the belt outer frame, the steel wire rope traction assembly is arranged at the rear of the belt outer frame, and the conveying belt is sleeved outside the tail, the belt telescopic inner frame and the belt outer frame. The steel wire rope traction assembly in the application is connected with the belt telescopic inner frame through a steel wire rope group, a driver drives a traction translation frame to slide on a traction base, under the traction action of the steel wire rope group, the belt telescopic inner frame is telescopically slid relative to the belt outer frame, so that the belt conveyor has the telescopic performance. With the change of the relative position between the belt telescopic inner frame and the belt outer frame, the mode of the Z-shaped turning-back section also changes, so as to adapt to the change of the overall length of the belt conveyor.

Description

Technical Field

[0001] This invention relates to the field of material conveying equipment technology, and in particular to a retractable belt conveyor with flexible steel wire traction. Background Technology

[0002] In mining operations, belt conveyors are key equipment for the continuous transportation of materials such as ore and waste rock. They have advantages such as strong conveying capacity, long conveying distance, simple structure, reliable operation and low operating cost.

[0003] However, as mining faces advance or shift, transport distances and directions require frequent adjustments. Traditional fixed belt conveyors, with their fixed frame length and orientation, exhibit significant shortcomings in the dynamically changing mining environment.

[0004] 1. Inability to adapt to the advancement of the mining face: In underground tunneling or open-pit mining operations, loading and unloading points continuously move forward as the working face advances. Fixed-length conveyors require frequent disassembly and reassembly of the frame or the establishment of multiple conveyors in relay to extend the transport line. This process is not only labor-intensive, results in long downtime, and affects production efficiency, but also creates significant installation and scheduling difficulties in the confined space of underground tunnels.

[0005] 2. Inability to flexibly adapt to complex tunnel layouts: Underground tunnel networks typically have branches, turns, or need to serve multiple work faces. Conveyors with fixed directions cannot change their paths, resulting in extremely poor system flexibility. Changing the transport flow often requires constructing fixed transfer points or configuring multiple systems, significantly increasing tunnel development, equipment investment, and energy consumption. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a retractable belt conveyor with flexible steel wire traction. The technical solution of the present invention is as follows:

[0007] A retractable belt conveyor with flexible steel wire traction includes a tail section, a belt telescopic inner frame, a belt outer frame, a steel wire rope traction assembly, and a conveyor belt. The tail section is installed at the front end of the belt telescopic inner frame, the belt telescopic inner frame is slidably installed at the front end of the belt outer frame, the steel wire rope traction assembly is located behind the belt outer frame, and the conveyor belt is sleeved on the outside of the tail section, the belt telescopic inner frame, and the belt outer frame.

[0008] The wire rope traction assembly includes a traction base, two sets of fixed guide rails, and a traction translation frame. The two sets of fixed guide rails are respectively fixedly connected to the front and rear sides of the upper surface of the traction base. The traction translation frame is slidably connected to the upper end of the traction base and located between the two sets of fixed guide rails. The upper end of the front fixed guide rail is equipped with a driver for driving the traction translation frame to slide on the traction base. The traction translation frame is connected to the belt telescopic inner frame through a wire rope assembly.

[0009] The return section of the conveyor belt, and the area corresponding to the intersection of the outer belt frame and the inner belt telescopic frame, forms a Z-shaped reversing section, so that when the traction translation frame slides, the inner belt telescopic frame can be pulled to extend or retract by the wire rope group, and the shape change of the Z-shaped reversing section can adapt to the length change of the conveyor belt.

[0010] Optionally, a hopper for unloading is installed at the rear end of the belt frame.

[0011] Optionally, the upper layer of the belt telescopic inner frame is equipped with multiple sets of inner frame upper idler rollers along its length to support the bottom of the conveyor belt working surface; the lower rear end of the belt telescopic inner frame is fixedly equipped with an inner frame redirecting roller for rotating and winding the conveyor belt; the lower layer of the belt telescopic inner frame is fixedly equipped with multiple sets of inner frame return idler rollers along its length to support the bottom of the conveyor belt return section; the upper layer of the belt outer frame is equipped with multiple sets of vertically lifting idler rollers along its length; the upper rear end of the belt outer frame is fixedly equipped with an outer frame upper idler roller; and the lower layer of the belt outer frame... Multiple sets of outer frame return idlers are fixedly installed along its length. The installation height of the outer frame return idlers is lower than that of the inner frame return idlers. An adjustable redirecting roller for rotating and winding the conveyor belt is installed at the lower front end of the outer frame. The installation height of the adjustable redirecting roller is lower than that of the inner frame redirecting roller. The inner frame redirecting roller and the adjustable redirecting roller are respectively supported at two turning points of the Z-shaped turnaround section of the conveyor belt. A drive frame is fixedly connected to the rear end of the outer frame. A drive roller for driving the conveyor belt is rotatably connected to the inner side of the drive frame.

[0012] Optionally, guide rails are fixedly connected to both inner side walls of the outer belt frame, and the bottom of both side walls of the inner belt telescopic frame are slidably connected to the upper ends of the two sets of guide rails.

[0013] Optionally, the left and right sides of the inner belt telescopic frame are fixedly connected to elongated lifting plates via short columns. The front left and right sides of the outer belt frame are provided with elongated movable slots for accommodating the short columns. The lifting roller component includes two sets of slides, two sets of movable plates, and lifting rollers. The two sets of slides are symmetrically fixed on the left and right sides of the outer belt frame. The two sets of movable plates are vertically slidable inside the upper part of the two sets of slides. The lower end surface of the movable plate is provided with a guide slope that cooperates with the rear end of the lifting plate. The upper part of the two sets of movable plates and the side close to each other are fixedly connected to support seats for fixing the two shaft ends of the lifting rollers.

[0014] When the inner belt telescopic frame slides towards the outer belt frame, the lifting plate vertically lifts the movable plate on the corresponding side.

[0015] Optionally, the adjustable redirecting roller assembly includes a fixed roller, two sets of tensioning seats, and two sets of lugs. Rectangular slots are provided through both sides of the front end of the belt outer frame. A roller shaft is rotatably connected inside the fixed roller. The two ends of the roller shaft are slidably connected to the corresponding rectangular slots on one side. The two sets of tensioning seats are fixedly connected to the rear ends of the roller shaft. The two sets of lugs are fixedly connected to the rear ends of the two sets of rectangular slots. A guide screw is threaded inside the lug. The tensioning seat is slidably connected to the outer side of the front section of the guide screw. A tension spring is sleeved on the outer side of the guide screw. A spring force adjusting nut is also threaded on the outer side of the guide screw. The spring force adjusting nut is located between the tensioning seat and the lug. The tension spring is pre-compressed between the tensioning seat and the spring force adjusting nut.

[0016] Optionally, two traction guide rails are also fixedly connected between the two sets of fixed guide rail seats. The two sets of traction guide rails are respectively set on the left and right sides of the traction translation frame. The left and right sides of the traction translation frame are provided with through holes for passing through the traction guide rails. The driver is a traction cylinder. The upper surface of the traction translation frame is fixedly connected with a fixed buckle for hinged to the piston rod end of the traction cylinder. The cylinder body of the traction cylinder is fixedly connected to the upper end of the fixed guide rail seat located in front through a pressure plate seat.

[0017] Optionally, a first wire rope pin and a second wire rope pin are fixedly connected to the rear end of the lifting plate on the side away from the inner frame of the belt telescopic mechanism. The first wire rope pin is located behind the second wire rope pin. The wire rope group includes a first wire rope and a second wire rope. Both the first wire rope and the second wire rope are arranged in a U-shape. The two ends of the first wire rope are fixedly connected to two sets of first wire rope pins respectively. The middle part of the first wire rope is slidably overlapped on the traction translation frame. The two ends of the second wire rope are fixedly connected to two sets of second wire rope pins respectively. Fixed roller groups are fixedly connected to the left and right sides of the front end of the outer frame of the belt. A second set of longitudinal pulley groups are fixedly connected to the left and right sides of the fixed guide rail seat located at the rear.

[0018] After the two ends of the second wire rope are led out from the front end of the second wire rope pin, they slide and overlap on the fixed roller group and the second set of longitudinal pulley group on the corresponding side in sequence, and finally the middle part also slides and overlaps on the traction translation frame.

[0019] When the traction translation frame slides to the rear end, the traction translation frame pulls the inner belt telescopic frame to slide towards the outer belt frame via the first steel wire rope;

[0020] When the traction translation frame slides towards the front end, the traction translation frame pulls the inner belt telescopic frame away from the outer belt frame via the second steel wire rope.

[0021] Optionally, the wire rope traction assembly further includes a wire rope multiplication mechanism. The wire rope multiplication mechanism includes two sets of second main longitudinal pulley groups, two sets of first transverse pulley groups, one set of first tensioning pulley components, two sets of second transverse pulley groups, one set of second tensioning pulley components, two sets of first movable pulley groups, and two sets of second movable pulley groups. The two sets of second main longitudinal pulley groups are respectively fixedly connected to the left and right sides of the front fixed guide rail base. The two sets of first transverse pulley groups are respectively fixedly connected to the left and right sides of the front end of the traction base, and the first transverse pulley groups are located at the second main longitudinal pulley groups. At the rear of the group, the first tensioning pulley is installed in the middle of the fixed guide rail seat at the front. The two groups of second transverse pulleys are respectively fixedly connected to the left and right sides of the rear end of the traction base, and the second transverse pulleys are located in front of the second longitudinal pulley group. The second tensioning pulley is installed in the middle of the fixed guide rail seat at the rear. The two groups of first movable pulleys are respectively fixedly connected to the left and right sides of the traction translation frame. The two groups of second movable pulleys are also respectively fixedly connected to the left and right sides of the traction translation frame, and the second movable pulleys are located at the rear end of the first movable pulley group.

[0022] The first wire rope is slidably connected to the first tension pulley in the middle, and then divided into two strands, left and right. Each strand is slidably connected to the first horizontal pulley group and the first movable pulley group on the corresponding side in sequence, and finally the two ends are fixedly connected to the first wire rope pin on the corresponding side.

[0023] The middle part of the second wire rope is slidably connected to the second tension pulley, and then it is divided into left and right strands. Each strand is slidably connected to the second horizontal pulley group, the second movable pulley group, the second auxiliary longitudinal pulley group, the second main longitudinal pulley group and the fixed roller group on the corresponding side in sequence. Finally, the two ends are fixedly connected to the second wire rope pin on the corresponding side.

[0024] Optionally, the first tensioning pulley component includes a hydraulic cylinder, a tensioning pulley frame, and a tensioning pulley. A movable slot is provided through the middle of the fixed guide rail seat located at the front. The hydraulic cylinder is fixedly connected inside the movable slot. The tensioning pulley frame is fixedly connected to the rear end of the piston rod of the hydraulic cylinder. The tensioning pulley is rotatably connected inside the tensioning pulley frame via a pin.

[0025] All of the above-mentioned optional technical solutions can be combined arbitrarily, and the present invention will not provide a detailed description of the structure after each combination.

[0026] By means of the above solution, the beneficial effects of the present invention are as follows:

[0027] 1. In this invention, the wire rope traction assembly is connected to the inner telescopic belt frame via a wire rope group. The driver propels the traction translation frame to slide on the traction base. Under the traction of the wire rope group, the inner telescopic belt frame slides relative to the outer belt frame, thus giving the belt conveyor telescopic performance. As the relative position between the inner and outer belt frames changes, the shape of the Z-shaped turning section changes accordingly to adapt to changes in the overall length of the belt conveyor. Compared to traditional fixed-length belt conveyors, this invention allows for flexible adjustment of the overall length of the belt conveyor according to the advancement of the mining face, significantly reducing downtime and improving production efficiency.

[0028] 2. This invention employs a flexible steel wire rope assembly for traction, allowing the angle between the outer belt frame and the steel wire rope traction component to be flexibly adjusted according to the actual transport flow direction, successfully solving the mechanical interference problem between traditional rigid steering mechanisms and belt conveyors. This structure enables the outer belt frame and the steel wire rope traction component to adaptively form a certain angle while the inner belt frame can freely extend and retract, thus precisely adapting to complex tunnel layouts. This invention organically integrates extension and steering functions, breaking through the bottleneck of existing technologies that are "capable of extension but not steering, or steering but not extension."

[0029] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0030] Figure 1 A schematic diagram of the overall appearance structure of the retractable belt conveyor with flexible steel wire traction provided by the present invention;

[0031] Figure 2 A side sectional view of the retractable belt conveyor with flexible steel wire traction provided by the present invention;

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 A schematic diagram of the retractable belt conveyor with flexible steel wire traction provided by the present invention in a turning state;

[0034] Figure 5 A schematic diagram of the retractable belt conveyor with flexible steel wire traction provided by the present invention in its extended state;

[0035] Figure 6 A schematic diagram of the retractable belt conveyor with flexible steel wire traction provided by the present invention in its shortened state;

[0036] Figure 7 An exploded structural diagram of the retractable belt conveyor with flexible steel wire traction provided by the present invention;

[0037] Figure 8 This is a schematic diagram of the tail section structure in this invention;

[0038] Figure 9 This is a schematic diagram of the structure of the belt telescopic inner frame in this invention. Figure 1 ;

[0039] Figure 10 This is a schematic diagram of the structure of the belt telescopic inner frame in this invention. Figure 2 ;

[0040] Figure 11 This is a schematic diagram of the structure in which the belt frame and the hopper cooperate in this invention;

[0041] Figure 12 This is an exploded structural diagram of the belt conveyor frame in this invention;

[0042] Figure 13 for Figure 12 Enlarged structural diagram at point B;

[0043] Figure 14for Figure 12 Enlarged structural diagram at point C;

[0044] Figure 15 This is a schematic diagram of the steel wire rope traction assembly in the present invention. Figure 1 ;

[0045] Figure 16 This is a schematic diagram of the steel wire rope traction assembly in the present invention. Figure 2 ;

[0046] Figure 17 This is an exploded structural diagram of the wire rope traction assembly in this invention;

[0047] Figure 18 This is an exploded structural diagram of the traction translation frame in this invention;

[0048] Figure 19 This is an exploded structural diagram of the fixed guide rail base and the traction guide rail in this invention;

[0049] Figure 20 This is a schematic diagram of the structure of the first wire rope, the second wire rope and the wire rope multiplication mechanism in this invention.

[0050] Labels in the diagram: 1. Tail end; 2. Belt telescopic inner frame; 21. Inner frame side plate; 211. Ear plate; 22. Support bottom beam; 23. Inner frame upper idler roller assembly; 231. Upper idler roller bracket; 232. Inner frame upper idler roller; 233. Slot seat; 24. Lifting plate; 25. First wire rope pin; 26. Second wire rope pin; 27. Inner frame redirecting roller; 28. Inner frame return idler roller assembly; 281. Inner frame return roller; 282. Inner frame return vertical roller; 3. Belt outer frame; 31. Outer frame side plate; 311. Long movable groove; 312. Rectangular groove; 32. Fixed. 33. Bottom beam; 34. Guide rail; 35. Lifting idler roller assembly; 36. Slide seat; 37. Fixed vertical plate; 38. C-shaped cover; 39. Slide groove; 30. Movable plate; 31. Guide ramp; 32. Support seat; 33. Lifting idler roller; 34. Upper idler roller assembly on outer frame; 35. Upper vertical roller on outer frame; 36. Drive frame; 37. Drive roller; 38. Return idler roller assembly on outer frame; 39. Return roller on outer frame; 30. Return vertical roller on outer frame; 31. Adjustable redirecting roller assembly; 32. Fixed roller; 33. 2. Roller shaft; 383. Support seat; 384. Ear seat; 385. Guide screw; 386. Tension spring; 387. Spring force adjusting nut; 39. Fixed roller assembly; 391. C-type fixed end seat; 392. Pulley; 310. Outer frame base; 4. Hopper; 41. U-shaped groove; 5. Wire rope traction assembly; 51. Traction base; 52. Fixed guide rail seat; 521. Pressure plate seat; 522. Movable slot; 53. Traction guide rail; 54. Traction translation frame; 541. Fixed buckle seat; 542. Through hole; 543. Sliding copper sleeve; 544. Copper sleeve 55. Pressure plate; 56. Traction cylinder; 57. First wire rope; 58. Second wire rope; 59. Wire rope multiplication mechanism; 50. Second main longitudinal pulley block; 51. Second main longitudinal pulley block; 52. First transverse pulley block; 53. First tensioning pulley assembly; 54. Hydraulic cylinder; 55. Tensioning pulley frame; 56. Tensioning pulley; 57. Second tensioning pulley assembly; 58. First movable pulley block; 59. Second auxiliary longitudinal pulley block; 60. Fixed base plate; 61. Conveyor belt; 72. Z-shaped turnaround section. Detailed Implementation

[0051] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0052] Please see Figure 1-20The present invention provides a retractable belt conveyor with flexible steel wire traction, including a tail 1, a belt telescopic inner frame 2, a belt outer frame 3, a steel wire rope traction assembly 5, and a conveyor belt 6. The tail 1 is installed at the front end of the belt telescopic inner frame 2, the belt telescopic inner frame 2 is slidably installed at the front end of the belt outer frame 3, the steel wire rope traction assembly 5 is located at the rear of the belt outer frame 3, and the conveyor belt 6 is sleeved on the outside of the tail 1, the belt telescopic inner frame 2, and the belt outer frame 3.

[0053] The wire rope traction assembly 5 includes a traction base 51, two sets of fixed guide rail seats 52 and a traction translation frame 54. The two sets of fixed guide rail seats 52 are fixedly connected to the front and rear sides of the upper surface of the traction base 51 respectively. The traction translation frame 54 is slidably connected to the upper end of the traction base 51 and located between the two sets of fixed guide rail seats 52. The upper end of the fixed guide rail seat 52 located in front is equipped with a driver for driving the traction translation frame 54 to slide on the traction base 51. The traction translation frame 54 is connected to the belt telescopic inner frame 2 through a wire rope group. The lower part of the traction base 51 is fixedly connected with four sets of fixed base plates 510 for fixing the traction base 51.

[0054] The return section of the conveyor belt 6 and the area corresponding to the intersection of the outer belt frame 3 and the inner belt telescopic frame 2 are formed with a Z-shaped reversing section 61, so that when the traction translation frame 54 slides, the inner belt telescopic frame 2 can be pulled to extend and retract by the wire rope group, and the shape change of the Z-shaped reversing section 61 can adapt to the length change of the conveyor belt 6.

[0055] In this invention, the wire rope traction assembly 5 is connected to the inner telescopic belt frame 2 via a wire rope group. The driver drives the traction translation frame 54 to slide on the traction base 51. Under the traction of the wire rope group, the inner telescopic belt frame 2 slides relative to the outer belt frame 3, thus giving the belt conveyor telescopic performance. As the relative position between the inner telescopic belt frame 2 and the outer belt frame 3 changes, the shape of the Z-shaped reversing section 61 changes accordingly to adapt to changes in the overall length of the belt conveyor. Figure 5 The elongated state shown is as follows: Figure 6 As shown in the shortened state, compared with traditional fixed-length conveyors, this invention can flexibly adjust the overall length of the belt conveyor according to the advancement of the mining face, greatly reducing downtime and improving production efficiency.

[0056] This invention employs a flexible steel wire rope assembly for traction, allowing the angle between the outer belt frame 3 and the steel wire rope traction assembly 5 to be flexibly adjusted according to the actual transport flow direction, successfully solving the mechanical interference problem between traditional rigid steering mechanisms and belt conveyors. Figure 4As shown in the steering state, this structure enables the outer belt frame 3 and the wire rope traction assembly 5 to adaptively form a certain angle while the inner belt telescopic frame 2 can freely extend and retract, thus precisely adapting to complex tunnel layouts. This invention organically integrates telescopic and steering functions, breaking through the bottleneck of existing technologies that are "capable of telescopic extension but not steering, or capable of steering but not telescopic extension."

[0057] Furthermore, a hopper 4 for unloading is installed at the rear end of the belt outer frame 3.

[0058] Specifically, such as Figure 10 As shown, the belt-telescopic inner frame 2 includes two sets of parallel inner frame side plates 21. Multiple sets of supporting bottom beams 22 are fixedly connected between the two sets of inner frame side plates 21. Ear plates 211 are welded to the front ends of both sets of inner frame side plates 21, and one end of the open side of the tail section 1 is fixed to the two sets of ear plates 211 by bolts. Secondly, as... Figure 12 As shown, the belt outer frame 3 also includes two sets of parallel outer frame side plates 31, and multiple sets of fixed bottom beams 32 are fixedly connected between the two sets of outer frame side plates 31.

[0059] Furthermore, such as Figure 10 As shown, the upper layer of the belt telescopic inner frame 2 is equipped with multiple sets of inner frame upper idler rollers 23 along its length to support the bottom of the working surface of the conveyor belt 6. The inner frame upper idler rollers 23 include two sets of upper idler roller brackets 231 and inner frame upper idler rollers 232. The two shaft ends of the inner frame upper idler rollers 232 are respectively fixedly connected to the upper ends of the two sets of upper idler roller brackets 231. The two side walls of the belt telescopic inner frame 2 are fixedly connected with slot seats 233. The upper idler roller brackets 231 are movably inserted into the corresponding slot seats 233 and fixed with bolts. The lower layer of the belt telescopic inner frame 2 is equipped with multiple sets of inner frame return idler rollers 28 along its length to support the bottom of the return section of the conveyor belt 6. The inner frame return idler rollers 28 include inner frame return rollers 281 for supporting the lower surface of the conveyor belt 6 and inner frame return vertical rollers 282 arranged on both sides of the conveyor belt 6 for limiting movement.

[0060] like Figure 12 and Figure 14 As shown, multiple sets of vertically lifting idlers 34 are installed on the upper layer of the outer belt frame 3 along its length. An upper idler 35 is fixedly installed on the upper rear end of the outer belt frame 3. The upper idler 35 includes upper vertical rollers 351 arranged on both sides of the conveyor belt 6 for positioning and upper idlers 352 for supporting the lower surface of the working surface of the conveyor belt 6. Figure 5 and Figure 6As shown, the height of the outer frame idler 35 is fixed, while the lifting idler 34 can be raised and lowered vertically. The purpose of this arrangement is that when the inner belt telescopic frame 2 extends out of the outer belt frame 3, the working surface on the conveyor belt 6 is basically horizontal. When the inner belt telescopic frame 2 retracts into the outer belt frame 3, the height of the lifting idler 34 increases, thereby providing sufficient space for the inner frame idler 23 on the inner frame of the inner belt telescopic frame 2. This prevents the lifting idler 34 from interfering with the inner frame idler 23 located on the inner frame of the inner belt telescopic frame 2, ensuring the efficient operation of the conveyor belt 6.

[0061] like Figure 12 As shown, multiple sets of outer frame return idlers 37 are fixedly installed along the length of the lower layer of the outer frame 3. The outer frame return idlers 37 include outer frame return rollers 371 for supporting the lower surface of the conveyor belt 6 and outer frame return vertical rollers 372 arranged on both sides of the conveyor belt 6 for positioning. For example... Figure 3 As shown, the installation height of the outer frame return idler 37 is lower than that of the inner frame return idler 28. The purpose of this arrangement is to ensure that when the inner belt telescopic frame 2 retracts into the outer belt frame 3, the outer frame return idler 37 will not interfere with the position of the inner frame return idler 28, thereby ensuring the normal telescopic extension and retraction of the inner belt telescopic frame 2.

[0062] like Figure 3 As shown, the lower rear end of the inner belt telescopic frame 2 is fixedly equipped with an inner frame redirecting roller 27 for rotating and winding the conveyor belt 6. The lower front end of the outer belt frame 3 is equipped with an adjustable redirecting roller 38 for rotating and winding the conveyor belt 6. The installation height of the adjustable redirecting roller 38 is lower than that of the inner frame redirecting roller 27. The inner frame redirecting roller 27 and the adjustable redirecting roller 38 are respectively supported at the two turning points of the Z-shaped turnaround section 61 of the conveyor belt 6. When the inner belt telescopic frame 2 retracts into the outer belt frame 3, the lateral distance between the inner frame redirecting roller 27 and the adjustable redirecting roller 38 gradually increases, thereby increasing the overlap area of ​​the two horizontal planes of the Z-shaped turnaround section 61. Under the premise of ensuring the normal operation of the conveyor belt 6, the conveyor belt 6 is effectively folded and stored to adapt to the overall length change of the inner belt telescopic frame 2 and the outer belt frame 3.

[0063] like Figure 11 As shown, a drive frame 36 is fixedly connected to the rear end of the outer belt frame 3. A drive roller 361 for driving the conveyor belt 6 is rotatably connected to the inner side of the drive frame 36. A drive motor is installed inside the drive frame 36 and inside the drive roller 361. U-shaped grooves 41 are provided on both sides of the front end of the hopper 4. The hopper 4 is inserted into the rear end of the drive frame 36 through two sets of U-shaped grooves 41.

[0064] Multiple sets of outer frame bases 310 are fixed to both the left and right sides of the belt outer frame 3 by bolts.

[0065] Furthermore, guide rails 33 are fixedly connected to both inner side walls of the outer belt frame 3, and the bottom of both side walls of the inner belt telescopic frame 2 are slidably connected to the upper ends of the two sets of guide rails 33 respectively.

[0066] Specifically, when the inner belt telescopic frame 2 slides relative to the outer belt frame 3, the two sets of guide rails 33 can provide the necessary sliding support force for the two side walls of the inner belt telescopic frame 2, thereby effectively ensuring the stability and smoothness of its sliding structure.

[0067] Furthermore, both sides of the inner telescopic belt frame 2 are fixedly connected to elongated lifting plates 24 via short columns. The front left and right sides of the outer belt frame 3 are both provided with elongated movable slots 311 to accommodate the short columns. The lifting roller component 34 includes two sets of slide blocks 341, two sets of movable plates 342, and lifting rollers 344. The two sets of slide blocks 341 are symmetrically fixed on the left and right sides of the outer belt frame 3. Each slide block 341 includes a fixed upright plate 3411 and a C-shaped cover 3412. The fixed upright plate 3411 is fixedly connected to the upper ends of both side walls of the outer belt frame 3. The opening of the C-shaped cover 3412 faces the fixed upright plate 3411 and the two are fixed by bolts. The C-shaped cover 3412 and the fixed upright plate 3411 form a groove 3413 that provides sliding space for the movable plate 342. The two sets of movable plates 342 are vertically slidably mounted on the upper part of the two sets of sliding blocks 341. The lower end surface of the movable plate 342 is provided with a guide slope 3421 that cooperates with the rear end of the lifting plate 24. The upper end of the two sets of movable plates 342 and the side that is close to each other are fixedly connected with support seats 343 for fixing the two shaft ends of the lifting roller 344.

[0068] Specifically, such as Figure 10 As shown, the end face of the lifting plate 24 that contacts the movable plate 342 is designed as a semi-circular arc surface to facilitate lifting the movable plate 342. Figure 6 As shown, when the inner belt telescopic frame 2 slides towards the outer belt frame 3, the inner belt telescopic frame 2 drives the short column to slide within the long movable groove 311. Simultaneously, the inner belt telescopic frame 2 drives the lifting plates 24 on both sides to vertically lift the corresponding movable plates 342. At this time, the two sets of movable plates 342 slide upwards relative to the slide block 341, thereby lifting the lifting roller 344 and the conveyor belt 6 above it. Figure 3 As shown, when the conveyor belt 6 is lifted, the tension of the conveyor belt 6 increases. At this time, the adjustable redirecting roller 38 can adaptively adjust its relative position with the outer belt frame 3 to maintain the stability of the tension, thereby ensuring that the conveyor belt 6 is always in a normal tension state during the extension and retraction of the inner belt frame 2.

[0069] Furthermore, the adjustable redirecting roller component 38 includes a fixed roller 381, two sets of tensioning seats 383, and two sets of lugs 384. Rectangular grooves 312 are provided through both sides of the front end of the belt outer frame 3. A roller shaft 382 is rotatably connected inside the fixed roller 381. The two ends of the roller shaft 382 are slidably connected to the corresponding rectangular grooves 312. The two sets of tensioning seats 383 are fixedly connected to the rear ends of the roller shaft 382, ​​and the two sets of lugs 384 are fixedly connected to the two sets of rectangular grooves 312. At the rear end of the groove 312, the inner thread of the ear seat 384 is connected to the guide screw 385. The tensioning seat 383 is slidably connected to the outer side of the front section of the guide screw 385. A tension spring 386 is sleeved on the outer side of the guide screw 385. A spring force adjusting nut 387 is also threaded on the outer side of the guide screw 385. The spring force adjusting nut 387 is located between the tensioning seat 383 and the ear seat 384. The tension spring 386 is pre-compressed between the tensioning seat 383 and the spring force adjusting nut 387.

[0070] Specifically, such as Figure 3 and Figure 6 As shown, when the inner belt extension frame 2 extends or retracts relative to the outer belt frame 3, the effective support area of ​​the conveyor belt 6 increases or decreases due to the lifting and lowering of the lifting idler roller 34. At this time, the adjustable redirecting roller 38 can adaptively adjust its position according to the tension change of the conveyor belt 6, thereby coping with the change in the effective support area of ​​the conveyor belt 6. Figure 13 As shown, the adjustment process is as follows: When the lifting idler roller 34 is raised, the conveyor belt 6 will press the fixed roller 381 backward, thereby driving the fixed roller 381 to drive the roller shaft 382 and the two sets of support seats 383 to slide backward (i.e., ear seat 384) along the guide screw 385. At this time, the tension spring 386 is gradually compressed, thus effectively adapting to the tension change of the conveyor belt 6 caused by the rise of the lifting idler roller 34. Secondly, the initial compression of the tension spring 386 can also be adjusted by adjusting the axial position of the spring force adjusting nut 387 outside the guide screw 385.

[0071] Furthermore, two traction guide rails 53 are fixedly connected between the two sets of fixed guide rail seats 52. The two sets of traction guide rails 53 are respectively set on the left and right sides of the traction translation frame 54. Through holes 542 for passing through the traction guide rails 53 are opened on both the left and right sides of the traction translation frame 54. The driver adopts a traction cylinder 55. A fixed buckle 541 for hinged to the piston rod end of the traction cylinder 55 is fixedly connected to the upper surface of the traction translation frame 54. The cylinder body of the traction cylinder 55 is fixedly connected to the upper end of the fixed guide rail seat 52 located in front through the pressure plate seat 521.

[0072] Specifically, the piston rod end of the traction cylinder 55 extends, at which point the traction translation frame 54 slides towards the rear end. During the sliding process, under the action of the two sets of traction guide rails 53, the traction translation frame 54 can ensure that it can only move smoothly and accurately in a straight line along a predetermined path when under force, preventing jamming or deflection. Secondly, sliding copper sleeves 543 are embedded in both the front and rear ends of the through hole 542. During the sliding process of the traction translation frame 54, the sliding copper sleeves 543 make sliding contact with the traction guide rails 53, making the sliding smoother. In addition, copper sleeve pressure plates 544 are fixed to both ends of the through hole 542 by bolts to limit the position of the sliding copper sleeves 543.

[0073] Furthermore, such as Figure 7 , Figure 10 and Figure 15 As shown, a first wire rope pin 25 and a second wire rope pin 26 are fixedly connected to the rear end of the lifting plate 24 on the side away from the belt telescopic inner frame 2. The first wire rope pin 25 is located behind the second wire rope pin 26. The wire rope assembly includes a first wire rope 56 and a second wire rope 57. Both the first wire rope 56 and the second wire rope 57 are arranged in a U-shape. The two ends of the first wire rope 56 are fixedly connected to the two sets of first wire rope pins 25 respectively. The middle of the first wire rope 56 is slidably overlapped on the traction translation frame 54. The two ends of the second wire rope 57 are fixedly connected to the two sets of second wire rope pins 26 respectively. Figure 6 and Figure 12 As shown, fixed roller groups 39 are fixedly connected to the left and right sides of the front end of the belt outer frame 3. The fixed roller group 39 includes a C-shaped fixed end seat 391 and a pulley 392. The C-shaped fixed end seat 391 is fixedly connected to the belt outer frame 3 by bolts. The pulley 392 is rotatably connected to the lower horizontal surface of the C-shaped fixed end seat 391 by a shaft. A second set of longitudinal pulley groups 59 is fixedly connected to the left and right sides of the fixed guide rail seat 52 located at the rear.

[0074] After the two ends of the second wire rope 57 are led out from the front end of the second wire rope pin 26, they slide and overlap on the fixed roller group 39 and the second set of longitudinal pulley group 59 on the corresponding side in sequence, and finally the middle part also slides and overlaps on the traction translation frame 54.

[0075] Specifically, when the traction translation frame 54 slides to the rear end, it pulls the inner telescopic frame 2 of the belt towards the outer belt frame 3 via the first wire rope 56. When the traction translation frame 54 slides to the front end, it pulls the second wire rope 57 to the front end. Under the action of the second set of longitudinal pulleys 59, the second wire rope 57 bends 180 degrees. At this time, the upper part of the second wire rope 57 at this position moves to the front end, while the lower part moves to the rear end. Then, under the action of the fixed roller group 39, the second wire rope 57 bends 180 degrees again. At this time, the lower part of the second wire rope 57 at this position moves to the rear end, while the upper part moves to the front end. The upper part then pulls the second wire rope pin 26 to slide to the front end, thereby indirectly pulling the inner telescopic frame 2 of the belt away from the outer belt frame 3. Secondly, the structure uses two independently arranged steel wire ropes (first steel wire rope 56 and second steel wire rope 57) to correspond the two directions of movement of the traction translation frame 54 to the extension and retraction of the belt telescopic inner frame 2, respectively, thus realizing bidirectional movement controlled by a single drive source.

[0076] Furthermore, such as Figure 15 , Figure 16 , Figure 19 and Figure 20 As shown, the wire rope traction assembly 5 also includes a wire rope multiplication mechanism 58. The wire rope multiplication mechanism 58 includes two sets of second main longitudinal pulley groups 581, two sets of first transverse pulley groups 582, one set of first tensioning pulley components 583, two sets of second transverse pulley groups 584, one set of second tensioning pulley components 585, two sets of first movable pulley groups 586, and two sets of second movable pulley groups 587. The two sets of second main longitudinal pulley groups 581 are respectively fixedly connected to the left and right sides of the front fixed guide rail seat 52, and the two sets of first transverse pulley groups 582 are respectively fixedly connected to the left and right sides of the front end of the traction base 51, with the first transverse pulley groups 582 located at the second main longitudinal pulley group 587. Behind the pulley block 581, the first tension pulley 583 is installed in the middle of the front fixed guide rail seat 52. Two sets of second transverse pulley blocks 584 are respectively fixedly connected to the left and right sides of the rear end of the traction base 51, and the second transverse pulley blocks 584 are located in front of the second set of longitudinal pulley blocks 59. The second tension pulley 585 is installed in the middle of the rear fixed guide rail seat 52. Two sets of first movable pulley blocks 586 are respectively fixedly connected to the left and right sides of the traction translation frame 54. Two sets of second movable pulley blocks 587 are also respectively fixedly connected to the left and right sides of the traction translation frame 54, and the second movable pulley blocks 587 are located at the rear end of the first movable pulley blocks 586.

[0077] The middle part of the first wire rope 56 is slidably connected to the first tension pulley 583, and then it is divided into two strands, left and right. Each strand is slidably connected to the first horizontal pulley group 582 and the first movable pulley group 586 on the corresponding side in turn. Finally, the two ends are fixedly connected to the first wire rope pin 25 on the corresponding side.

[0078] The middle part of the second wire rope 57 is slidably connected to the second tension pulley 585, and then it is divided into left and right strands. Each strand is slidably connected to the second horizontal pulley group 584, the second movable pulley group 587, the second auxiliary longitudinal pulley group 59, the second main longitudinal pulley group 581 and the fixed roller group 39 on the corresponding side in sequence. Finally, the two ends are fixedly connected to the second wire rope pin 26 on the corresponding side.

[0079] Specifically, by setting up the wire rope multiplier mechanism 58, the pulling force and extension stroke required by the traction cylinder 55 can be significantly reduced, thereby achieving a multiplication of the pulling force and extension stroke. Especially in the turning state, when the angle between the wire rope traction assembly 5 and the belt outer frame 3 changes, the first wire rope 56 and the second wire rope 57 can automatically adapt to the length changes of the left and right strands, thereby ensuring the stability and smooth operation of the traction structure.

[0080] Furthermore, such as Figure 19 and Figure 20 As shown, the first tensioning pulley component 583 includes a hydraulic cylinder 5831, a tensioning pulley frame 5832, and a tensioning pulley 5833. A movable slot 522 is provided through the middle of the fixed guide rail seat 52 located at the front. The hydraulic cylinder 5831 is fixedly connected inside the movable slot 522. The tensioning pulley frame 5832 is fixedly connected to the rear end of the piston rod of the hydraulic cylinder 5831. The tensioning pulley 5833 is rotatably connected inside the tensioning pulley frame 5832 through a pin.

[0081] Specifically, by setting the first tension pulley 583, the tension of the first wire rope 56 can be flexibly adjusted to ensure that the first wire rope 56 is always in a stable traction state. Secondly, the second tension pulley 585 adopts the same structure as the first tension pulley 583 and is used to adjust the tension of the second wire rope 57.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A retractable belt conveyor with flexible steel wire traction, characterized in that: The machine includes a tail section (1), a belt telescopic inner frame (2), a belt outer frame (3), a wire rope traction assembly (5), and a conveyor belt (6). The tail section (1) is installed at the front end of the belt telescopic inner frame (2), the belt telescopic inner frame (2) is slidably installed at the front end of the belt outer frame (3), the wire rope traction assembly (5) is located at the rear of the belt outer frame (3), and the conveyor belt (6) is sleeved on the outside of the tail section (1), the belt telescopic inner frame (2), and the belt outer frame (3). The wire rope traction assembly (5) includes a traction base (51), two sets of fixed guide rail seats (52) and a traction translation frame (54). The two sets of fixed guide rail seats (52) are respectively fixedly connected to the front and rear sides of the upper surface of the traction base (51). The traction translation frame (54) is slidably connected to the upper end of the traction base (51) and located between the two sets of fixed guide rail seats (52). The upper end of the fixed guide rail seat (52) located in front is equipped with a driver for driving the traction translation frame (54) to slide on the traction base (51). The traction translation frame (54) is connected to the belt telescopic inner frame (2) through a wire rope assembly. The return section of the conveyor belt (6) and the area corresponding to the intersection of the outer belt frame (3) and the inner belt telescopic frame (2) are formed with a Z-shaped reversal section (61), so that when the traction translation frame (54) slides, the inner belt telescopic frame (2) can be pulled to extend and retract by the wire rope group, and the shape change of the Z-shaped reversal section (61) can adapt to the length change of the conveyor belt (6). The upper layer of the belt telescopic inner frame (2) is equipped with multiple sets of inner frame upper idler rollers (23) for supporting the bottom of the working surface of the conveyor belt (6) along its length direction. The lower rear end of the belt telescopic inner frame (2) is fixedly equipped with an inner frame redirecting roller (27) for rotating and winding around the conveyor belt (6). The lower layer of the belt telescopic inner frame (2) is fixedly equipped with multiple sets of inner frame return idler rollers (28) for supporting the bottom of the return section of the conveyor belt (6) along its length direction. The upper layer of the belt outer frame (3) is equipped with multiple sets of vertically lifting idler rollers (34) along its length direction. The upper rear end of the belt outer frame (3) is fixedly equipped with an outer frame upper idler roller (35). The lower layer of the belt outer frame (3) is fixedly equipped with... Multiple sets of outer frame return idler rollers (37) are installed at a height lower than the inner frame return idler rollers (28). An adjustable redirecting roller (38) for rotating and winding the conveyor belt (6) is installed at the lower front end of the outer frame (3). The adjustable redirecting roller (38) is installed at a height lower than the inner frame redirecting roller (27). The inner frame redirecting roller (27) and the adjustable redirecting roller (38) respectively abut against and support the two turning points of the Z-shaped turnaround section (61) of the conveyor belt (6). A drive frame (36) is fixedly connected to the rear end of the outer frame (3). A drive roller (361) for driving the conveyor belt (6) is rotatably connected to the inner side of the drive frame (36).

2. The retractable belt conveyor with flexible steel wire traction according to claim 1, characterized in that, The rear end of the belt frame (3) is equipped with a hopper (4) for unloading.

3. The retractable belt conveyor with flexible steel wire traction according to claim 1, characterized in that, The two inner side walls of the outer belt frame (3) are fixedly connected with guide rails (33), and the bottom of the two side walls of the inner belt telescopic frame (2) are slidably connected to the upper ends of the two sets of guide rails (33).

4. The retractable belt conveyor with flexible steel wire traction according to claim 1, characterized in that, The left and right sides of the inner telescopic belt frame (2) are fixedly connected to long strip-shaped lifting plates (24) by short columns. The left and right sides of the front end of the outer belt frame (3) are provided with long strip movable grooves (311) for accommodating short columns. The lifting roller component (34) includes two sets of sliding seats (341), two sets of movable plates (342) and lifting rollers (344). The two sets of sliding seats (341) are symmetrically fixed on the left and right sides of the outer belt frame (3). The two sets of movable plates (342) are vertically slid in the upper part of the two sets of sliding seats (341). The lower end surface of the movable plate (342) is provided with a guide slope (3421) that cooperates with the rear end of the lifting plate (24). The upper end of the two sets of movable plates (342) and the side close to each other are fixedly connected with support seats (343) for fixing the two shaft ends of the lifting rollers (344). When the inner belt telescopic frame (2) slides towards the outer belt frame (3), the lifting plate (24) vertically lifts the movable plate (342) on the corresponding side.

5. A retractable belt conveyor with flexible steel wire traction according to claim 1, characterized in that, The adjustable redirecting roller assembly (38) includes a fixed roller (381), two sets of support seats (383), and two sets of lug seats (384). Rectangular grooves (312) are provided through both sides of the front end of the belt outer frame (3). A roller shaft (382) is rotatably connected inside the fixed roller (381). The two ends of the roller shaft (382) are slidably connected to the corresponding rectangular grooves (312). The two sets of support seats (383) are fixedly connected to the rear sides of both ends of the roller shaft (382), and the two sets of lug seats (384) are fixedly connected to the two sets of rectangular grooves (312). 2) At the rear end, the ear seat (384) is internally threaded with a guide screw (385), the support seat (383) is slidably connected to the outer side of the front section of the guide screw (385), a tension spring (386) is sleeved on the outer side of the guide screw (385), and a spring force adjusting nut (387) is also threaded on the outer side of the guide screw (385). The spring force adjusting nut (387) is located between the support seat (383) and the ear seat (384), and the tension spring (386) is pre-pressed between the support seat (383) and the spring force adjusting nut (387).

6. A retractable belt conveyor with flexible steel wire traction according to claim 1, characterized in that, Two traction guide rails (53) are fixedly connected between the two sets of fixed guide rail seats (52). The two sets of traction guide rails (53) are respectively set on the left and right sides of the traction translation frame (54). The left and right sides of the traction translation frame (54) are provided with through holes (542) for passing through the traction guide rails (53). The driver adopts a traction cylinder (55). The upper surface of the traction translation frame (54) is fixedly connected with a fixed buckle (541) for hinged to the piston rod end of the traction cylinder (55). The cylinder body of the traction cylinder (55) is fixedly connected to the upper end of the fixed guide rail seat (52) located in front through a pressure plate seat (521).

7. A retractable belt conveyor with flexible steel wire traction according to claim 4, characterized in that, The lifting plate (24) is fixedly connected to a first wire rope pin (25) and a second wire rope pin (26) at the rear end of the side away from the belt telescopic inner frame (2). The first wire rope pin (25) is located behind the second wire rope pin (26). The wire rope group includes a first wire rope (56) and a second wire rope (57). The first wire rope (56) and the second wire rope (57) are both arranged in a U-shape. The two ends of the first wire rope (56) are fixedly connected to two sets of first wire rope pins (25) respectively. The middle part of the first wire rope (56) is slidably overlapped on the traction translation frame (54). The two ends of the second wire rope (57) are fixedly connected to two sets of second wire rope pins (26) respectively. The front left and right sides of the belt outer frame (3) are fixedly connected to fixed roller groups (39). The left and right sides of the fixed guide rail seat (52) located at the rear are fixedly connected to a second set of longitudinal pulley groups (59). After the two ends of the second wire rope (57) are led out from the front end of the second wire rope pin (26), they slide and overlap on the fixed roller group (39) and the second set of longitudinal pulley group (59) on the corresponding side in sequence, and finally the middle part also slides and overlaps on the traction translation frame (54). When the traction translation frame (54) slides to the rear end, the traction translation frame (54) pulls the belt telescopic inner frame (2) to slide towards the belt outer frame (3) via the first steel wire rope (56); When the traction translation frame (54) slides towards the front end, the traction translation frame (54) pulls the belt telescopic inner frame (2) to slide away from the belt outer frame (3) via the second steel wire rope (57).

8. A retractable belt conveyor with flexible steel wire traction according to claim 7, characterized in that, The wire rope traction assembly (5) further includes a wire rope multiplication mechanism (58), which includes two sets of second main longitudinal pulley groups (581), two sets of first transverse pulley groups (582), one set of first tensioning pulley components (583), two sets of second transverse pulley groups (584), one set of second tensioning pulley components (585), two sets of first movable pulley groups (586), and two sets of second movable pulley groups (587). The two sets of second main longitudinal pulley groups (581) are respectively fixedly connected to the left and right sides of the front fixed guide rail base (52), and the two sets of first transverse pulley groups (582) are respectively fixedly connected to the left and right sides of the front end of the traction base (51), and the first transverse pulley groups (582) are located at the second main longitudinal pulley groups (581). Behind 581), the first tensioning pulley (583) is installed in the middle of the fixed guide rail seat (52) in front. Two sets of second transverse pulley groups (584) are respectively fixedly connected to the left and right sides of the rear end of the traction base (51), and the second transverse pulley group (584) is located in front of the second set of longitudinal pulley groups (59). The second tensioning pulley (585) is installed in the middle of the fixed guide rail seat (52) in the rear. Two sets of first movable pulley groups (586) are respectively fixedly connected to the left and right sides of the traction translation frame (54). Two sets of second movable pulley groups (587) are also respectively fixedly connected to the left and right sides of the traction translation frame (54), and the second movable pulley group (587) is located at the rear end of the first movable pulley group (586). The first wire rope (56) is slidably connected to the first tension pulley (583) in the middle, and then divided into two strands, each of which is slidably connected to the first horizontal pulley group (582) and the first movable pulley group (586) on the corresponding side in sequence. Finally, the two ends are fixedly connected to the first wire rope pin (25) on the corresponding side. The middle part of the second wire rope (57) is slidably connected to the second tension pulley (585), and then it is divided into left and right strands. Each strand is slidably connected to the second horizontal pulley group (584), the second movable pulley group (587), the second auxiliary longitudinal pulley group (59), the second main longitudinal pulley group (581) and the fixed roller group (39) on the corresponding side. Finally, the two ends are fixedly connected to the second wire rope pin (26) on the corresponding side.

9. A retractable belt conveyor with flexible steel wire traction according to claim 8, characterized in that, The first tensioning pulley component (583) includes a hydraulic cylinder (5831), a tensioning pulley frame (5832), and a tensioning pulley (5833). A movable slot (522) is provided through the middle of the fixed guide rail seat (52) located at the front. The hydraulic cylinder (5831) is fixedly connected inside the movable slot (522). The tensioning pulley frame (5832) is fixedly connected to the rear end of the piston rod of the hydraulic cylinder (5831). The tensioning pulley (5833) is rotatably connected inside the tensioning pulley frame (5832) through a pin.

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