Automatic belt changing device suitable for large-angle and long-distance belt conveyors

Abstract

The present invention discloses an automatic belt changing device suitable for long-distance belt conveyors with large inclination angles. The device comprises a new and old belt guide roller assembly, an old belt guide roller assembly, a new belt guide roller assembly, a new belt pressure roller assembly, an old belt pressure roller assembly, a left drive wheel assembly, a right drive wheel assembly, an old belt tensioning and pressing anti-slipping assembly, a new belt tensioning and pressing assembly, and a new belt anti-slipping self-locking mechanism, mounted on a frame. The old belt is withdrawn from the belt changing device after passing through the old belt tensioning and pressing anti-slipping assembly, the old belt guide roller assembly, the right drive wheel assembly, the right drive wheel assembly, the old belt pressure roller, and the new and old belt guide rollers. The new belt is conveyed out of the belt changing device after passing through the new and old belt guide roller assembly, the old belt guide assembly, the new belt pressure roller assembly, the new belt pressure roller assembly, the left drive wheel assembly, the left drive wheel assembly, the new belt guide roller assembly, and the new belt tensioning and pressing assembly. The device synchronizes the withdrawal of the old belt with the conveying of the new belt, preventing the belt from slipping and achieving belt self-locking, thereby ensuring the normal operation of the belt changing operation.

Description

Technical Field

[0001] The invention relates to the technical field of conveyor belt replacement on a belt conveyor, and in particular to an automatic belt changing device suitable for a belt conveyor with a large inclination angle and a long distance. Background Art

[0002] A high-angle, long-distance belt conveyor is a type of material conveying equipment used in industries such as coal, metallurgy, and chemicals. It consists of a belt, guide rollers, drive rollers, tensioning rollers, and idlers. The belt is primarily made of a composite of rubber and wire rope. During high-angle, long-distance transport, the belt is subject to multiple forces, including its own gravity, the load, and the support of the idlers. This can lead to belt slack or uneven tension, which in turn can cause fatigue damage due to the continuous influence of variable loads. When an old belt reaches the end of its service life, it needs to be replaced with a new one. It is not realistic to use manual belt changing for belt conveyors with large inclination angles and long distances. Currently, double-layer crawler chassis mechanisms are mostly used for belt changing. The specific method is: first, place the belt changing mechanism in a suitable position, cut off the old belt at a preset point, place the upper old belt in the belt changing mechanism, and the lower old belt passes through the belt changing mechanism and is vulcanized and connected to the new belt, or the new belt passes through the belt changing mechanism and is vulcanized and connected to the lower old belt. The upper crawler chassis and the lower crawler chassis clamp the upper old belt and pull it outward, and the lower crawler chassis presses the new belt that is vulcanized and connected to the lower old belt and conveys it inward. After the new belt is conveyed, the upper new belt and the lower new belt are vulcanized and connected to complete the belt change. However, when the old belt is cut off at the preset point, the upper and lower layers of the old belt will slide down along the inclined shaft due to the influence of their own gravity component. If the machine fails to tighten the belt during operation, it will also slide down. Therefore, how to prevent the belt from slipping is a technical problem that needs to be solved; in addition, the length of the old belt pulled out should be consistent with the length of the new belt transported inward, so the rotational speed of the upper and lower crawler chassis needs to be synchronized, but because the extraction load and the transport load are different, it is difficult to synchronize the rotational speed of the upper and lower crawler chassis. Therefore, how to achieve synchronous operation of the new and old belts is another technical problem that needs to be solved. Summary of the Invention

[0003] The invention provides an automatic belt changing device suitable for a belt conveyor with a large inclination angle and a long distance, which solves the problems of belt slippage and asynchronous movement of new and old belts.

[0004] The technical solution adopted by the present invention is as follows: an automatic belt changing device suitable for a belt conveyor with a large inclination angle and a long distance, comprising a frame, a new and old belt guide roller assembly, an old belt guide roller assembly, a new belt guide roller assembly, a new belt pressure roller assembly, an old belt pressure roller assembly, a left driving wheel assembly, a right driving wheel assembly, an old belt tensioning and pressing anti-slipping assembly, a new belt tensioning and pressing assembly and a new belt anti-slip self-locking mechanism; the old belt passes through the old belt tensioning and pressing anti-slipping assembly, passes through the left side of the old belt guide roller assembly, turns, passes through the right side of the right driving wheel assembly, and then exits the right driving wheel assembly. The new belt passes between the old belt pressure wheel above it, passes above the new and old belt guide rollers and is pulled out from the belt changing device; the new belt enters from under the new and old belt guide roller assembly after vulcanization, passes between the new and old belt guide roller assembly and the new belt pressure roller assembly below it, turns after passing between the new belt pressure roller assembly and the left driving wheel assembly, turns after passing between the left driving wheel assembly and the new belt guide roller assembly, and is then transported from the new belt tensioning and pressing assembly; the left driving wheel assembly and the right driving wheel assembly are connected and driven by two rows of toothed chains.

[0005] As a further improvement of the present invention, the old belt tensioning and pressing anti-slip assembly includes an upper old belt tensioning wheel, an old belt tensioning wire rope, a wedge-shaped joint for the old belt, an upper pressure plate for the old belt, a compression spring for the old belt wedge block, an upper wedge block for the old belt, a lower pressure plate for the old belt, a bolt for the old belt pressure plate and a joint support shaft for the old belt; wherein, the upper old belt tensioning wheel is fixed to the frame; one end of the old belt tensioning wire rope is sleeved on the upper old belt tensioning wheel, and the other end is fixed in the wedge-shaped joint for the old belt; the old belt is wedge-shaped The head and the upper pressure plate of the old belt and the lower pressure plate of the old belt are all sleeved on the joint support shaft for the old belt; the old belt wedge block compression spring is placed in the spring hole opened at the lower part of the upper pressure plate of the old belt; the old belt upper wedge is placed in the wedge block groove provided at the lower part of the old belt upper pressure plate, and the old belt wedge block compression spring can apply spring force to the old belt upper wedge; the old belt upper pressure plate is connected to the old belt lower pressure plate through the old belt pressure plate bolt, and the old belt is sandwiched between the old belt upper pressure plate and the old belt lower pressure plate.

[0006] As a further improvement of the present invention, an old belt upper rib plate is provided on the upper part of the old belt upper pressure plate, and an old belt lower rib plate is provided on the bottom of the old belt lower pressure plate.

[0007] As a further improvement of the present invention, the new belt tensioning and pressing assembly includes a lower new belt tensioning wheel, a new belt tensioning steel wire rope, a new belt wedge joint, a new belt upper pressure plate, a new belt upper wedge block, a new belt lower pressure plate, a new belt pressure plate bolt and a new belt joint support shaft; wherein, the lower new belt tensioning wheel is installed on the frame, one end of the new belt tensioning steel wire rope is sleeved on the lower new belt tensioning wheel, and the other end is fixed in the new belt wedge joint; the new belt wedge joint is connected to the new belt upper pressure plate and the new belt lower pressure plate through the new belt joint support shaft; the new belt upper pressure plate is connected to the new belt lower pressure plate through the new belt pressure plate bolt, and clamps the new belt; the new belt upper wedge block is placed in the wedge block groove opened at the lower part of the new belt upper pressure plate.

[0008] As a further improvement of the present invention, the new belt anti-slip self-locking mechanism includes an anti-slip front swing bar, an anti-slip front support shaft, an anti-slip middle fixed support shaft, an anti-slip middle swing support shaft, an anti-slip rear first section connecting rod, an anti-slip rear second section connecting rod, an anti-slip rear support shaft, a front swing bar spring, a connecting rod locking nut, and a connecting rod length adjustment screw; wherein, the anti-slip front swing bar is composed of a long rod and a short rod vertically connected, and the anti-slip front support shaft is installed on the new belt guide roller support shafts on both sides of the new belt guide roller assembly, and is used to slide and hinge one end of the long rod on the anti-slip front swing bar with the new belt guide roller support shaft; the anti-slip middle fixed support shaft connects the long rod The intersection of the rod and the short rod is fixed on the new belt tensioning wheel; the short rod is hinged to one end of the anti-skid rear first section connecting rod through the anti-skid middle swing support shaft; the other end of the anti-skid middle swing support shaft is threadedly connected to one end of the connecting rod length adjustment screw through the connecting rod locking nut; the connecting rod length adjustment screw is threadedly connected to one end of the anti-skid rear second section connecting rod; an axial hole is opened in the wedge block on the new belt along the width direction of the new belt, the anti-skid rear support shaft passes through the axial hole, and the anti-skid rear second section connecting rod is hinged to the anti-skid rear support shaft; the front swing arm spring is fixed on the frame to support the new guide roller assembly.

[0009] As a further improvement of the present invention, the left drive wheel assembly includes a first sprocket assembly, a left drive wheel left flange, a left drive outer cylinder, a left drive wheel right support sleeve, a left drive wheel right shaft sleeve, a left drive wheel right support, a reducer connecting nut, a reducer connecting bolt, a support motor sleeve assembly, a reduction motor, a right connecting bolt and a right connecting nut; the first sprocket assembly includes a first sprocket, a first sprocket screw, a sprocket left support, a sprocket left support sleeve and an output shaft key; wherein the left end of the reduction motor is connected to the left end of the support motor sleeve assembly through the reducer connecting nut and the reducer connecting bolt; the right end of the support motor sleeve assembly The end is fixedly connected to the right support of the left driving wheel by the right connecting bolt and the right connecting nut; the output shaft of the reduction motor is fixedly connected to the first sprocket by the output shaft key; the left sprocket support is rotatably connected to the output shaft of the reduction motor by the left sprocket support sleeve; the first sprocket is fixedly connected to the left flange of the left driving wheel by the first sprocket screw; the left flange of the left driving wheel is welded to the left end of the left driving outer cylinder; the right end of the left driving outer cylinder is fixedly connected to the right support sleeve of the left driving wheel; the right support sleeve of the left driving wheel is rotatably connected to the right support of the left driving wheel by the right shaft sleeve of the left driving wheel.

[0010] As a further improvement of the present invention, the old belt pressure roller assembly includes the old belt pressure roller left support shaft, the old belt pressure roller left support plate, the old belt pressure roller left support, the old belt pressure roller drum, the old belt pressure roller left support block, the friction plate, the old belt pressure roller spring right support plate, the butterfly spring, the old belt pressure roller right support shaft, the old belt pressure roller right support plate, the old belt pressure roller right support sleeve, the old belt pressure roller right support block, the pre-tightening nut, the old belt pressure roller left support sleeve, the old belt pressure roller pin shaft, the old belt pressure roller left wedge block, the old belt pressure roller wedge block pin shaft, the digital display jack, the spring stopper and the old belt pressure roller right wedge block; wherein, the right end of the old belt pressure roller drum is fixed on the old belt pressure roller right support plate, and the old belt pressure roller right support plate and the left end of the old belt pressure roller right support shaft The right support sleeve of the old belt pressure roller is placed in the circular hole opened at one end of the right support block of the old belt pressure roller, and the right end of the right support shaft of the old belt pressure roller is rotatably connected to the inner hole of the right support shaft of the old belt pressure roller; the other end of the right support block of the old belt pressure roller is supported on the frame through the wedge pin of the old belt pressure roller, and the right support block of the old belt pressure roller can move on the wedge pin of the old belt pressure roller; the right wedge block of the old belt pressure roller is H-shaped; the right support block of the old belt pressure roller is placed in the slide groove at the lower part of the right wedge block of the old belt pressure roller, and the digital display jack is placed in the groove on the upper part of the right wedge block of the old belt pressure roller; the right wedge block of the old belt pressure roller is located at the overall width of one end of the digital display jack The degree is greater than the overall width at one end of the right support block of the old belt pressure roller; the left end of the old belt pressure roller drum is fixed to the left support of the old belt pressure roller through the old belt pressure roller pin; the left support shaft of the old belt pressure roller is a stepped shaft, and the left support of the old belt pressure roller is rotatably connected to the circular shaft of the left support shaft of the old belt pressure roller through the left support sleeve of the old belt pressure roller. The friction plates are placed in the left and right circular grooves of the left support of the old belt pressure roller; the friction plate on the right side is supported by the right support disk of the old belt pressure roller spring; the pre-tightening nut is fixed to the left support shaft of the pressure roller through a threaded connection, and the butterfly spring is pressed by the spring stopper; the butterfly spring is placed on the right support of the old belt pressure roller spring The left support plate of the old belt pressure roller is sleeved on the square shaft of the left support shaft of the pressure roller, the right end of the left support plate of the old belt pressure roller is against the left friction plate, and the left end of the left support plate of the old belt pressure roller is in contact with the left support block of the old belt pressure roller; the upper part of the left support block of the old belt pressure roller is sleeved on the square shaft of the left support shaft of the pressure roller, and the lower part is supported on the frame through another wedge pin shaft of the old belt pressure roller, and the left support block of the old belt pressure roller can move on the wedge pin shaft of the old belt pressure roller; the left wedge block of the old belt pressure roller is H-shaped, and the upper part of the left support block of the old belt pressure roller is placed in the slide groove of the lower part of the left wedge block of the old belt pressure roller, and the other digital display jack is placed in the groove of the left wedge block of the old belt pressure roller.

[0011] As a further improvement of the present invention, the old belt guide roller assembly includes an old belt guide roller support shaft, an old belt guide roller sleeve, an old belt guide roller support, an old belt guide roller inner seat and an old belt guide roller; wherein, the old belt guide roller is fixed on the old belt guide roller inner seat, the old belt guide roller inner seat sleeve is arranged on the square shaft at one end of the old belt guide roller support shaft, and the other end of the old belt guide roller support shaft is rotatably connected to the old belt guide roller support through the old belt guide roller sleeve.

[0012] As a further improvement of the present invention, the old belt guide roller assembly also includes a guide half-ring assembly, which is fixed to the old belt guide roller through a guide ring connecting bolt, and the old belt is placed between the left and right guide half-ring assemblies.

[0013] As a further improvement of the present invention, the left driving wheel assembly and the right driving wheel assembly are connected on both sides by left and right driving wheel support connecting rods.

[0014] Beneficial effects of the present invention:

[0015] (1) The old belt tensioning and pressing anti-slipping assembly, the new belt tensioning and pressing assembly, and the new belt anti-slipping self-locking mechanism used in the present invention can effectively solve the problem of slipping caused by the failure of the new belt pressing roller assembly and the old belt pressing roller assembly to press the new belt or the old belt during the belt replacement process;

[0016] (2) The present invention uses a left drive wheel and a right drive wheel to transmit motion through two rows of toothed chains, which effectively solves the problem of inconsistent rotation speeds of the left and right drive wheels and achieves synchronization of the movement of the old belt being withdrawn and the new belt being delivered;

[0017] (3) The clamping mechanism of the old belt clamping roller assembly adopted by the present invention does not use the digital display jack to directly provide the clamping force, but converts the horizontal extension of the digital display jack into the up and down movement of the old belt clamping roller for clamping according to the movement law of the wedge block in the wedge groove. Due to the angular effect of the wedge block, the horizontal extension length variation range of the digital display jack corresponding to the up and down movement length range of the corresponding clamping force range is larger, so it is easier to adjust to the preset clamping value range, and the control accuracy during the clamping process is higher. At the same time, the wedge principle can reduce the required thrust, and the new belt clamping roller assembly clamping mechanism is the same;

[0018] (4) The old belt pressure roller assembly adopted by the present invention adopts a friction-resistance pressure roller structure, which compresses the butterfly spring through the pre-tightening nut, thereby compressing the friction plate and increasing the rotational friction coefficient of the old belt pressure roller. The old belt pressure roller assembly and the right drive wheel clamp the old belt, and the friction force of pulling out the old belt is certain. When the rotational friction coefficient of the old belt pressure roller increases, the pressure of the pressure roller on the belt can be appropriately reduced. The same applies to the pressure mechanism of the new belt pressure roller assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 A simplified diagram of a high-angle, long-distance belt conveyor and the location of a belt-changing device;

[0021] Figure 2 Schematic diagram of the overall structure of the belt changing device of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the frame of the present invention;

[0023] Figure 4 is an internal diagram of the belt changing device of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of two rows of toothed chains driving double rollers in the present invention;

[0025] Figure 6 It is a cross-sectional view of the structure of the old belt pressing roller assembly in the present invention;

[0026] Figure 7 This is a right side view of the old belt pressure roller assembly of the present invention;

[0027] Figure 8 This is a left side view of the old belt pressure roller assembly of the present invention;

[0028] Figure 9 This is a schematic structural diagram of the old belt guide roller assembly of the present invention;

[0029] Figure 10 This is a schematic structural diagram of the old belt tensioning, pressing and anti-slipping assembly of the present invention;

[0030] Figure 11 This is a schematic structural diagram of the wedge groove in the upper pressure plate of the old belt of the present invention;

[0031] Figure 12 This is a schematic structural diagram of the new belt tensioning and pressing assembly of the present invention;

[0032] Figure 13 This is a schematic structural diagram of the wedge groove in the upper pressure plate of the new belt of the present invention;

[0033] Figure 14 This is a structural diagram of the new belt anti-slip self-locking mechanism of the present invention;

[0034] In the figure, Q1 is the first drive roller; QD is the belt-changing section; ZX1 is the first guide roller; PD1 is the upper belt; PD2 is the lower belt; Q2 is the second drive roller; Q3 is the third drive roller; ZX2 is the second guide roller; ZZ is the coal loading bin; ZJ is the tensioning roller; HD is the location where the belt-changing device is placed.

[0035] 1- New belt;

[0036] 2-Old belt;

[0037] 3-New and old belt guide roller assembly;

[0038] 4-New belt pressure roller assembly;

[0039] 5-first sprocket assembly; 501-first sprocket; 502-first sprocket screw; 503-output shaft key; 504-left sprocket support; 505-left sprocket support sleeve;

[0040] 6-two rows of toothed chains;

[0041] 7 - Old belt pressure roller assembly; 701 - Old belt pressure roller left support shaft; 702 - Old belt pressure roller left support plate; 703 - Old belt pressure roller left support; 704 - Old belt pressure roller drum; 705 - Old belt pressure roller left support block; 706 - Friction plate; 707 - Old belt pressure roller spring right support plate; 708 - Butterfly spring; 709 - Old belt pressure roller right support shaft; 710 - Old belt pressure roller right support plate; 711 - Old belt pressure roller right support sleeve; 712 - Old belt pressure roller right support block; 713 - Preload nut; 714 - Old belt pressure roller left support sleeve; 715 - Old belt pressure roller pin; 716 - Old belt pressure roller left wedge; 717 - Old belt pressure roller wedge pin; 718 - Digital display jack; 719 - Spring stop; 720 - Old belt pressure roller right wedge;

[0042] 8-right drive wheel assembly;

[0043] 9 - Old belt tensioning and anti-slip assembly; 901 - Upper old belt tensioning pulley; 902 - Old belt tensioning wire rope; 903 - Old belt wedge joint; 904 - Old belt upper pressure plate; 905 - Old belt upper rib plate; 906 - Old belt wedge compression spring; 907 - Old belt upper wedge; 908 - Old belt lower pressure plate; 909 - Old belt lower rib plate; 910 - Old belt pressure plate bolt; 911 - Old belt joint support shaft; 912 - Old belt joint pin;

[0044] 10-left and right driving wheel support connecting rods;

[0045] 11-New belt tensioning and pressing assembly; 1101-Lower new belt tensioning pulley; 1102-New belt tensioning wire rope; 1103-New belt wedge joint; 1104-New belt upper pressure plate; 1105-New belt upper rib plate; 1106-New belt upper wedge; 1107-New belt lower pressure plate; 1108-New belt lower rib plate; 1109-New belt pressure plate bolt; 1110-New belt joint support shaft; 1111-New belt joint pin;

[0046] 12-Old belt guide roller assembly; 1201-Old belt guide roller support shaft; 1202-Old belt guide roller sleeve; 1203-Old belt guide roller support; 1204-Old belt guide roller inner seat; 1205-Guide ring connecting bolt, 1206-Guide half ring assembly; 1207-Old belt guide roller;

[0047] 13-second sprocket assembly;

[0048] 14-new belt guide roller assembly; 1401-new belt guide roller support shaft;

[0049] 15-New with anti-slip self-locking mechanism; 1501-Anti-slip front sway bar; 1502-Anti-slip front support shaft; 1503-Anti-slip center fixed support shaft; 1504-Anti-slip center sway support shaft; 1505-Anti-slip rear first section connecting rod; 1506-Anti-slip rear second section connecting rod; 1507-Anti-slip rear support shaft; 1508-Front sway bar spring; 1509-Connecting rod locking nut; 1510-Connecting rod length adjustment screw; 16-Left drive Wheel assembly; 1601 - Left drive wheel left flange; 1602 - Left drive outer cylinder; 1603 - Left drive wheel right support sleeve; 1604 - Left drive wheel right shaft sleeve; 1605 - Left drive wheel right support; 1606 - Reducer connecting nut; 1607 - Reducer connecting bolt; 1608 - Support motor sleeve assembly; 1609 - Reducer motor; 1610 - Right connecting bolt; 1611 - Right connecting nut;

[0050] 17 - Frame; 1701 - Frame; 1702 - Fixed end caps for old and new belt guide rollers; 1703 - Wedge slot for new belt pressure roller; 1704 - Left drive wheel mounting position; 1705 - Right drive wheel mounting position; 1706 - Mounting slot for new belt guide roller; 1707 - Mounting slot for old belt guide roller; 1708 - Wedge slot for old belt pressure roller; 1709 - Upper mounting hole for old belt tension pulley; 1710 - Lower mounting hole for new belt tension pulley; 1711 - Spring mounting seat; 1712 - Fixed end cap for drive wheel; DETAILED DESCRIPTION

[0051] Please refer to Figure 1 , Figure 1 This is a working diagram of a belt conveyor and the belt changing device provided by the present invention. The working principle of the belt conveyor is as follows:

[0052] Coal is dropped from the coal loading bin ZZ onto the upper belt PD1. The first, second, and third drive rollers Q1, Q2, and Q3 drive the upper and lower belts PD1 and PD2 to transport the coal. The tensioning roller ZJ is used to control the belt tensioning, and the first and second guide rollers ZX1 and ZX2 are used to control the belt rotation direction. The figure indicates the placement location HD of the belt changing device of the present invention.

[0053] Please refer to Figure 2 and Figure 4, the working principle of the belt changing device is as follows:

[0054] The first step is to clear the load on the belt conveyor, place the belt changing device on the belt changing machine placement HD and fix it, place the upper old belt, that is, the old belt 2, in the old belt tightening and anti-slipping component 9 and press it tightly.

[0055] Place the lower layer of old belt in the new belt tensioning and pressing assembly 11 and press it;

[0056] In the second step, the old belt 2 is cut at the belt-changing cutting section QD. The old belt 2 passes through the belt-changing machine along the old belt extraction path. The lower old belt passes through the belt-changing machine along the new belt conveying path and is vulcanized and connected with the new belt 1. The old belt pressing roller assembly 7 presses the old belt 2, and the new belt pressing roller assembly 4 presses the lower old belt. Thereafter, the old belt tensioning and pressing anti-slip assembly 9 and the new belt tensioning and pressing assembly 11 release the pressure. Through the action of the left drive wheel assembly 16 and the right drive wheel assembly 8, the old belt 2 is extracted, and the vulcanized and connected new belt 1 is conveyed.

[0057] In the third step, after the new belt 1 is conveyed, the old belt tensioning and pressing anti-slip assembly 9 and the new belt tensioning and pressing assembly 11 apply pressure to press the upper new belt 1 and the lower new belt 1, and the old belt pressing roller assembly 7 and the new belt pressing roller assembly 4 release the pressure, and the upper new belt 1 and the lower new belt 1 are drawn out of the belt changing machine and wound around the first drive roller Q1 and the first guide roller ZX1 of the belt conveyor, and then vulcanized and connected into one;

[0058] In the fourth step, the old belt tensioning and pressing anti-slip assembly 9 and the new belt tensioning and pressing assembly 11 will release the pressure and be removed first, and the upper new belt 1 and the lower new belt 1 are removed, and then the belt changing machine is removed.

[0059] Please refer to Figure 2 and Figure 4 The belt changing device of the present invention includes a frame 17, and is assembled on the frame 17 with an old and new belt guide roller assembly 3, an old belt guide roller assembly 12, a new belt guide roller assembly 14, a new belt pressure roller assembly 4, an old belt pressure roller assembly 7, a left driving wheel assembly 16, a right driving wheel assembly 8, an old belt tensioning and pressing anti-slip assembly 9, a new belt tensioning and pressing assembly 11 and a new belt anti-slip self-locking mechanism 15.

[0060] Please refer to Figure 5 , Figure 5The left drive wheel assembly 16 and the right drive wheel assembly 8 have essentially the same structure. The left drive wheel assembly 16 includes a first sprocket assembly 5, a left drive wheel left flange 1601, a left drive outer cylinder 1602, a left drive wheel right support sleeve 1603, a left drive wheel right shaft sleeve 1604, a left drive wheel right support 1605, a reducer connecting nut 1606, a reducer connecting bolt 1607, a support motor sleeve assembly 1608, a reduction motor 1609, a right connecting bolt 1610, and a right connecting nut 1611. The first sprocket assembly 5 includes a first sprocket 501, a first sprocket screw 502, an output shaft key 503, a sprocket left support 504, and a sprocket left support sleeve 505. The left end of the reduction motor 1609 is connected to the left end of the support motor sleeve assembly 1608 via a reducer connecting nut 1606 and a reducer connecting bolt 1607. The right end of the support motor sleeve assembly 1608 is fixedly connected to the left drive wheel right support 1605 via a right connecting bolt 1610 and a right connecting nut 1611. The output shaft of the reduction motor 1609 is fixedly connected to the first sprocket 501 via the output shaft key 503. The left sprocket support 504 is rotatably connected to the output shaft of the reduction motor 1609 via the left sprocket support sleeve 505. The first sprocket 501 is fixedly connected to the left drive wheel left flange 1601 via the first sprocket screw 502. The left drive wheel left flange 1601 is welded to the left end of the left drive outer cylinder 1602. The right end of the left drive outer cylinder 1602 is fixedly connected to the left drive wheel right support sleeve 1603. The left drive wheel right support sleeve 1603 is rotatably connected to the left drive wheel right support 1605 via the left drive wheel right shaft sleeve 1604.

[0061] The left drive wheel assembly 16 and the right drive wheel assembly 8 are connected by two rows of toothed chains 6, which transmit motion and synchronize the rotational speeds of the left and right drive wheel assemblies 16 and 8. In this embodiment, both the left and right drive wheel assemblies 16 and 8 are equipped with motors and speed reducers, maintaining synchronized rotational speeds during operation and increasing the conveying force on the belt. Alternatively, depending on the length of the belt conveyor, the right drive wheel assembly 8 can serve as the primary drive wheel, equipped with a motor and speed reducer, while the left drive wheel assembly 16 serves as the driven wheel, without a motor and speed reducer.

[0062] Correspondingly, the right driving wheel assembly 8 includes a second sprocket assembly 13 , the structure of which is the same as that of the first sprocket assembly 5 .

[0063] In addition, left and right drive wheel support connecting rods 10 are provided on the two outer sides of the drive wheel assembly 16 and the right drive wheel assembly 8 to fix the distance between the two and prevent them from shaking during operation.

[0064] Please refer to Figure 6 、 Figure 7 and Figure 8 , Figure 6 This is a top sectional view of the structure of the old belt pressure roller assembly 7. Figure 7 and Figure 8This is a side view of the old belt pressure roller assembly 7. The old belt pressure roller assembly 7 has essentially the same structure as the new belt pressure roller assembly 4. The old belt pressure roller assembly 7 includes the old belt pressure roller left support shaft 701, the old belt pressure roller left support disc 702, the old belt pressure roller left support 703, the old belt pressure roller drum 704, the old belt pressure roller left support block 705, a friction plate 706, the old belt pressure roller spring right support disc 707, a butterfly spring 708, the old belt pressure roller right support shaft 709, the old belt pressure roller right support disc 710, the old belt pressure roller right support sleeve 711, the old belt pressure roller right support block 712, a pre-tightening nut 713, the old belt pressure roller left support sleeve 714, the old belt pressure roller pin 715, the old belt pressure roller left wedge 716, the old belt pressure roller wedge pin 717, a digital jack 718, a spring stop 719, and the old belt pressure roller right wedge 720. The right end of the old belt pressure roller 704 is fixed to the old belt pressure roller right support plate 710, which is fixedly connected to the left end of the old belt pressure roller right support shaft 709. The old belt pressure roller right support sleeve 711 is placed in a circular hole formed at one end of the old belt pressure roller right support block 712. The right end of the old belt pressure roller right support shaft 709 is rotatably connected to the inner hole of the old belt pressure roller right support shaft 709. The other end of the old belt pressure roller right support block 712 is supported on the frame 17 by the old belt pressure roller wedge pin 717, allowing the old belt pressure roller right support block 712 to move on the old belt pressure roller wedge pin 717. The old belt pressure roller right wedge 720 is H-shaped. The old belt pressure roller right support block 712 is placed in a chute at the bottom of the old belt pressure roller right wedge 720, and the digital display jack 718 is placed in a groove at the top of the old belt pressure roller right wedge 720. The overall width of the old belt pressure roller's right wedge block 720, located on the end of the digital jack 718, is greater than the overall width of the old belt pressure roller's right support block 712. The left end of the old belt pressure roller cylinder 704 is fixed to the old belt pressure roller's left support 703 via the old belt pressure roller pin 715. The old belt pressure roller's left support shaft 701 is a stepped shaft. The old belt pressure roller's left support shaft 703 is rotatably connected to the old belt pressure roller's left support shaft 701 via the old belt pressure roller's left support sleeve 714. Friction plates 706 are placed in two circular grooves on the left and right sides of the old belt pressure roller's left support shaft 703. The right friction plate 706 is held in place by the old belt pressure roller's right spring support disc 707. The preload nut 713 is threadedly fixed to the left pressure roller support shaft 701 and compresses the butterfly spring 708 via the spring stop 719. The butterfly spring 708 is housed within the old belt pressure roller's right spring support disc 707. The left support plate 702 of the old belt pressure roller is mounted on the square shaft of the left support shaft 701 of the pressure roller. The right end of the left support plate 702 of the old belt pressure roller abuts against the left friction plate 706, and the left end of the left support plate 702 of the old belt pressure roller contacts the left support block 705 of the old belt pressure roller. The upper portion of the left support block 705 of the old belt pressure roller is mounted on the square shaft of the left support shaft 701 of the pressure roller, and the lower portion is supported on the frame 17 by another old belt pressure roller wedge pin 717. The left support block 705 of the old belt pressure roller can move on the old belt pressure roller wedge pin 717.The left wedge block 716 of the old belt pressure roller is H-shaped, the upper part of the left support block 705 of the old belt pressure roller is placed in the chute at the lower part of the left wedge block 716 of the old belt pressure roller, and another digital display jack 718 is placed in the groove of the left wedge block 716 of the old belt pressure roller.

[0065] Please combine Figure 3 The working principle of the old belt pressure roller assembly 7 is as follows: the inclination of the upper inclined groove surface in the old belt pressure roller wedge slot seat 1708 is 5°. Under the action of the old belt 2 and the right driving wheel assembly 8, the upper inclined surfaces of the old belt pressure roller left wedge 716 and the old belt pressure roller right wedge 720 of the old belt pressure roller assembly 7 will fit with the upper inclined groove surface in the old belt pressure roller wedge slot seat 1708. The two digital jacks 718 push the old belt pressure roller left wedge 716 and the old belt pressure roller right wedge 720 respectively, driving the 705-old belt pressure roller left support block 705 and the old belt pressure roller right support block 712 to move downward along the old belt pressure roller wedge pin 717, thereby pressing the old belt 2.

[0066] Please refer to Figure 9 , Figure 9 The figure is a schematic diagram of the structure of the old belt guide assembly 12. In this embodiment, the old belt guide roller assembly 12, the new and old belt guide roller assembly 3, and the new belt guide roller assembly 14 employ the same structure and are bilaterally symmetrical. The old belt guide roller assembly 12 comprises an old belt guide roller support shaft 1201, an old belt guide roller sleeve 1202, an old belt guide roller support 1203, an old belt guide roller inner seat 1204, and an old belt guide roller drum 1207. The old belt guide roller drum 1207 is fixed to the old belt guide roller inner seat 1204, which is sleeved onto a square shaft at one end of the old belt guide roller support shaft 1201. The other end of the old belt guide roller support shaft 1201 is rotatably connected to the old belt guide roller support 1203 via the old belt guide roller sleeve 1202. The old belt guide roller assembly 12 also includes a guide half-ring assembly 1206, which is fixed to the old belt guide roller 1207 by a guide ring connecting bolt 1205. The old belt 2 is placed between the left and right guide half-ring assemblies 1206. By adjusting the distance between the left and right guide half-ring assemblies 1206, it can adapt to belts of different bandwidths.

[0067] Please refer to Figure 10 and Figure 11 , Figure 10 This is a structural diagram of the old belt tensioning and pressing anti-slip assembly 9. Figure 11The details of the wedge slot are shown. The old belt tensioning and anti-slip assembly 9 includes an upper old belt tensioning wheel 901, an old belt tensioning wire rope 902, an old belt wedge joint 903, an old belt upper pressure plate 904, an old belt wedge compression spring 906, an old belt upper wedge 907, an old belt lower pressure plate 908, an old belt pressure plate bolt 910, and an old belt joint support shaft 911. The upper old belt tensioning wheel 901 is fixed to the frame 17. One end of the old belt tensioning wire rope 902 is sleeved on the upper old belt tensioning wheel 901, and the other end is fixed in the old belt wedge joint 903. The old belt wedge joint 903, the old belt upper pressure plate 904, and the old belt lower pressure plate 908 are all sleeved on the old belt joint support shaft 911. The old belt wedge compression spring 906 is placed in the spring hole opened at the bottom of the old belt upper pressure plate 904. The old belt upper wedge 907 is placed in a wedge slot provided below the old belt upper pressure plate 904. The old belt wedge compression spring 906 applies spring force to the old belt upper wedge 907. The old belt upper pressure plate 904 is connected to the old belt lower pressure plate 908 via old belt pressure plate bolts 910, sandwiching the old belt 2 between the old belt upper pressure plate 904 and the old belt lower pressure plate 908. The old belt joint pin 912 prevents the old belt joint support shaft 911 from moving up and down.

[0068] The tightening principle of the old belt tensioning and pressing anti-slipping component 9 is as follows: by adjusting the pre-tightening degree of the old belt pressure plate nut 910 and the old belt pressure plate bolt 911, the old belt tensioning and pressing anti-slipping component 9 is controlled to apply pressure or release pressure.

[0069] The principle of the anti-slip belt of the old belt tensioning and pressing anti-slip assembly 9 is as follows: under the action of the old belt wedge block compression spring 906 and the inner inclined surface of the wedge block groove of the old belt upper pressure plate 904, the old belt upper wedge block 907 can only move downward along the inner inclined surface of the wedge block groove of the old belt upper pressure plate 904, thereby generating pressure on the old belt 2, and friction is generated under the action of pressure. When the belt changing machine is operating normally, the movement direction of the old belt 2 is opposite to the thrust direction of the old belt wedge block compression spring 906 on the old belt upper wedge block 907, so the pressure generated by the old belt upper wedge block 907 on the old belt 2 will be reduced, and it is not enough to generate sufficient friction to jam the old belt 2. When the belt changing machine fails, the old belt pressing roller assembly 7 fails to press the old belt 2, and the old belt 2 slides to the right due to the influence of the belt gravity component. The moving direction of the old belt 2 is the same as the thrust direction of the old belt wedge block compression spring 906 on the old belt wedge block 907. Therefore, the pressure generated by the old belt wedge block 907 on the old belt will increase, thereby generating sufficient friction to jam the old belt 2.

[0070] In addition, an old belt upper rib plate 905 is provided on the upper part of the old belt upper pressing plate 904, and an old belt lower rib plate 909 is provided on the bottom of the old belt lower pressing plate 908. The rib plate is provided to prevent the upper pressing plate and the lower pressing plate from being deformed during use.

[0071] Please refer to Figure 12 and Figure 13 , Figure 12It is a structural diagram of the new belt tensioning and pressing assembly 11, Figure 14 The details of the wedge groove in the upper pressure plate 1104 of the new belt are shown. The new belt tensioning and pressing assembly 11 includes a lower new belt tensioning wheel 1101, a new belt tensioning wire rope 1102, a new belt wedge joint 1103, a new belt upper pressure plate 1104, a new belt upper wedge 1106, a new belt lower pressure plate 1107, a new belt pressure plate bolt 1109 and a new belt joint support shaft 1110. Among them, the lower new belt tensioning wheel 1101 is installed on the frame 17, and one end of the new belt tensioning wire rope 1102 is sleeved on the lower new belt tensioning wheel. The wheel 1101 is fixed at its other end to the new belt wedge joint 1103. The new belt wedge joint 1103 is connected to the new belt upper pressure plate 1104 and the new belt lower pressure plate 1107 via the new belt joint support shaft 1110. The new belt upper pressure plate 1104 is connected to the new belt lower pressure plate 1107 via the new belt pressure plate bolt 1109, and the new belt upper wedge 1106 is placed in the wedge groove provided at the bottom of the new belt upper pressure plate 1104 with the new belt 1. The new belt upper rib 1105 is provided on the new belt upper pressure plate 1104, and the new belt lower rib 1108 is provided at the bottom of the new belt lower pressure plate 1107.

[0072] Please refer to Figure 14 , Figure 14 The figure shows the structure of the new belt anti-slip self-locking mechanism 15. The new belt anti-slip self-locking mechanism 15 includes an anti-slip front swing bar 1501, an anti-slip front support shaft 1502, an anti-slip middle fixed support shaft 1503, an anti-slip middle swing support shaft 1504, an anti-slip rear first section connecting rod 1505, an anti-slip rear second section connecting rod 1506, an anti-slip rear support shaft 1507, a front swing bar spring 1508, a connecting rod locking nut 1509, and a connecting rod length adjustment screw 1510. The anti-slip front swing bar 1501 is composed of a long rod and a short rod connected perpendicularly. The anti-slip front support shafts 1502 are mounted on the new belt guide roller support shafts 1401 on both sides of the new belt guide roller assembly 14. The mechanism is configured to slide and articulate one end of the long rod on the anti-slip front swing bar 1501 with the new belt guide roller support shafts 1401, enabling both forward and backward sliding and rotational movement. The anti-skid center fixed support shaft 1503 secures the intersection of the long and short rods to the new belt tensioning pulley 1101. The short rod is hinged to one end of the anti-skid rear first section connecting rod 1505 via the anti-skid center swing support shaft 1504. The other end of the anti-skid center swing support shaft 1504 is threadedly connected to one end of the connecting rod length adjustment screw 1510 via the connecting rod lock nut 1509. The connecting rod length adjustment screw 1510 is threadedly connected to one end of the anti-skid rear second section connecting rod 1506. A slotted axis hole is defined within the new belt upper wedge 1106 along the width of the new belt 1. The anti-skid rear support shaft 1507 passes through this slotted axis hole. The anti-skid rear second section connecting rod 1506 is hingedly connected to the anti-skid rear support shaft 1507. The front swing arm spring 1508 is fixed to the frame 17 to support the new guide roller assembly 14.

[0073] Please combine Figure 11-14The new belt tensioning and pressing assembly 11 of the present invention cooperates with the new belt anti-slip self-locking mechanism 15 to tighten and prevent the new belt 2 from slipping off. The working principle is as follows:

[0074] The clamping principle is to control the pressure or release of the new belt tensioning and clamping assembly 11 by adjusting the pre-tightening degree of the new belt pressure plate nut 1109 and the new belt pressure plate bolt 1110.

[0075] Anti-slip principle: When the belt changing machine is working normally, the new belt pressing roller assembly 4 presses the new belt 1. Affected by the gravity component, the new belt 1 is in a taut state. The pressure of the new belt 1 on the new belt guide roller assembly 14 is greater than the supporting force of the front rocker spring 1508. The new belt 1 will press the new belt guide roller assembly 14, driving the new belt anti-slip self-locking mechanism 15 to move, so that the anti-slip rear support shaft 1507 carries the new belt wedge 1106 to the left. At this time, the upper inclined surface of the new belt wedge 1106 is separated from the inner inclined surface of the wedge groove of the new belt pressure plate 1104. Since the new belt wedge 1106 has a slide shaft hole and can move up and down, it will not generate pressure on the new belt 1, and therefore the new belt 1 will not be stuck. When the belt changing machine fails, the new belt pressing roller assembly 4 fails to press the new belt 1, and the new belt 1 slides to the right under the influence of the belt gravity component, thereby loosening. The front swing arm spring 1508 lifts the new belt guide roller assembly 14, driving the new belt anti-slip self-locking mechanism 15 to move, so that the anti-slip rear support shaft 1507 pushes the wedge block 1106 on the new belt to the right and press it tightly. At this time, the upper inclined surface of the wedge block 1106 on the new belt contacts the inclined surface in the wedge block groove of the new belt pressure plate 1104. The belt wedge 1106 has a slotted shaft hole. The new belt wedge 1106 can only move downward along the inclined surface of the wedge slot of the new belt pressure plate 1104, exerting pressure on the new belt 1. This pressure generates friction. Since the direction of movement of the new belt 1 is the same as the thrust direction of the anti-slip rear support shaft 1507 on the new belt wedge 1106, the pressure exerted by the new belt wedge 1106 on the new belt 1 is increased, thereby generating sufficient friction to lock the new belt 1. The new belt joint pin 1111 prevents the new belt joint support shaft 1110 from moving up and down.

[0076] Finally, please refer to Figure 3 , Figure 317 is a schematic structural diagram of a frame 17, on which the above-mentioned old and new belt guide roller assembly 3, old belt guide roller assembly 12, new belt guide roller assembly 14, new belt pressure roller assembly 4, old belt pressure roller assembly 7, left drive wheel assembly 16, right drive wheel assembly 8, old belt tensioning and pressing anti-slip assembly 9, new belt tensioning and pressing assembly 11, and new belt anti-slip self-locking mechanism 15 are all mounted. Specifically, the frame 17 includes a frame body 1701, a fixed end cover 1702 for the old and new belt guide rollers, a wedge slot seat 1703 for the new belt pressure roller, a left drive wheel mounting position 1704, a right drive wheel mounting position 1705, a new belt guide roller mounting groove 1706, an old belt guide roller mounting groove 1707, an old belt pressure roller wedge slot seat 1708, an upper old belt tensioning wheel mounting hole 1709, a lower new belt tensioning wheel mounting hole 1710, a spring mounting seat 1711, and a drive wheel fixed end cover 1712. Among them, the new and old belt guide roller fixed end cover 1702 is used to install the new and old belt guide roller assembly 3, the new belt pressure roller wedge slot seat 1703 is used to install the new belt pressure roller assembly 4, the left drive wheel mounting position 1704 is used to install the left drive wheel assembly 16, the right drive wheel mounting position 1705 is used to install the right drive wheel assembly 8, the new belt guide roller mounting groove 1706 is used to install the new belt guide roller assembly 14, the old belt guide roller mounting groove 1707 is used to install the old belt guide roller assembly 12, the old belt pressure roller wedge slot seat 1708 is used to install the old belt pressure roller assembly 7, the upper old belt tension wheel mounting hole 1709 is used to install the upper old belt tension wheel 901, the lower new belt tension wheel mounting hole 1710 is used to install the lower new belt tension wheel 1101, and the spring mounting seat 1711 is used to install the front sway bar spring 1508. The drive wheel fixed end cover 1712 is used to fix the right drive wheel assembly 8.

[0077] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes that can be made within the scope of knowledge possessed by technicians in the relevant technical field without departing from the spirit of the present invention are all within the scope of protection of the claims of the present invention.

Claims

1. An automatic belt changing device suitable for large-angle and long-distance belt conveyors, characterized in that: The invention comprises a frame (17), a new and old belt guide roller assembly (3), an old belt guide roller assembly (12), a new belt guide roller assembly (14), a new belt pressure roller assembly (4), an old belt pressure roller assembly (7), a left driving wheel assembly (16), a right driving wheel assembly (8), an old belt tensioning and pressing anti-slipping assembly (9), a new belt tensioning and pressing assembly (11) and a new belt anti-slip self-locking mechanism (15) which are assembled on the frame (17); the old belt (2) passes through the old belt tensioning and pressing anti-slipping assembly (9), turns after passing the left side of the old belt guide roller assembly (12), passes the right side of the right driving wheel assembly (8), and then passes through the right driving wheel assembly (8) and the old belt pressure roller assembly (11) above it. 7), passes between the new and old belt guide roller assembly (3), and is then drawn out from the belt changing device after passing above the new and old belt guide roller assembly (3); the new belt (1) enters from below the new and old belt guide roller assembly (3) after being vulcanized, passes between the new and old belt guide roller assembly (3) and the new belt pressure roller assembly (4) below it, turns, passes between the new belt pressure roller assembly (4) and the left driving wheel assembly (16), turns, passes between the left driving wheel assembly (16) and the new belt guide roller assembly (14), and is then transported from the new belt tensioning and pressing assembly (11); the left driving wheel assembly (16) and the right driving wheel assembly (8) are connected and driven by two rows of toothed chains (6); The old belt tensioning and pressing anti-slip assembly (9) comprises an upper old belt tensioning wheel (901), an old belt tensioning steel wire rope (902), an old belt wedge joint (903), an old belt upper pressure plate (904), an old belt wedge block compression spring (906), an old belt upper wedge block (907), an old belt lower pressure plate (908), an old belt pressure plate bolt (910) and an old belt joint support shaft (911); wherein, the upper old belt tensioning wheel (901) is fixed on the frame (17); one end of the old belt tensioning steel wire rope (902) is sleeved on the upper old belt tensioning wheel (901), and the other end is fixed in the old belt wedge joint (903); the old belt wedge joint (903) and the old belt are connected to each other. The old belt upper pressure plate (904) and the old belt lower pressure plate (908) are both sleeved on the old belt joint support shaft (911); the old belt wedge block compression spring (906) is placed in the spring hole opened at the lower part of the old belt upper pressure plate (904); the old belt upper wedge block (907) is placed in the wedge block groove provided at the lower part of the old belt upper pressure plate (904), and the old belt wedge block compression spring (906) can apply spring force to the old belt upper wedge block (907); the old belt upper pressure plate (904) is connected to the old belt lower pressure plate (908) through the old belt pressure plate bolt (910), and the old belt (2) is sandwiched between the old belt upper pressure plate (904) and the old belt lower pressure plate (908).

2. The automatic belt changing device for a belt conveyor with a large inclination angle and a long distance according to claim 1 is characterized in that: An old belt upper rib plate (905) is provided on the upper portion of the old belt upper pressing plate (904), and an old belt lower rib plate (909) is provided on the bottom portion of the old belt lower pressing plate (908).

3. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 1 is characterized in that: The new belt tensioning and pressing assembly (11) comprises a lower new belt tensioning wheel (1101), a new belt tensioning steel wire rope (1102), a new belt wedge joint (1103), a new belt upper pressure plate (1104), a new belt upper wedge block (1106), a new belt lower pressure plate (1107), a new belt pressure plate bolt (1109) and a new belt joint support shaft (1110); wherein, the lower new belt tensioning wheel (1101) is installed on the frame (17), one end of the new belt tensioning steel wire rope (1102) is sleeved on the lower new belt tensioning wheel (11 01), and the other end is fixed in the new belt wedge joint (1103); the new belt wedge joint (1103) is connected to the new belt upper pressure plate (1104) and the new belt lower pressure plate (1107) through the new belt joint support shaft (1110); the new belt upper pressure plate (1104) is connected to the new belt lower pressure plate (1107) through the new belt pressure plate bolt (1109), and clamps the new belt (1); the new belt upper wedge block (1106) is placed in the wedge block groove opened at the lower part of the new belt upper pressure plate (1104).

4. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 3 is characterized in that: The new belt anti-slip self-locking mechanism (15) comprises an anti-slip front swing bar (1501), an anti-slip front support shaft (1502), an anti-slip middle fixed support shaft (1503), an anti-slip middle swing support shaft (1504), an anti-slip rear first section connecting rod (1505), an anti-slip rear second section connecting rod (1506), an anti-slip rear support shaft (1507), a front swing bar spring (1508), a connecting rod locking nut (1509), a connecting rod length adjustment screw (1508), and a connecting rod length adjustment screw (1509). 510); wherein the anti-skid front swing bar (1501) is composed of a long bar and a short bar connected vertically, the anti-skid front support shaft (1502) is installed on the new belt guide roller support shaft (1401) on both sides of the new belt guide roller assembly (14), and is used to slide and hinge one end of the long bar on the anti-skid front swing bar (1501) with the new belt guide roller support shaft (1401); the anti-skid middle fixed support shaft (1503) The intersection of the rod and the short rod is fixed on the lower new belt tensioning wheel (1101); the short rod is hinged to one end of the anti-skid rear first section connecting rod (1505) through the anti-skid middle swing support shaft (1504); the other end of the anti-skid middle swing support shaft (1504) is threadedly connected to one end of the connecting rod length adjustment screw (1510) through the connecting rod locking nut (1509); the connecting rod length adjustment screw (1510) is threadedly connected to one end of the anti-skid rear second section connecting rod (1506); an axial hole is opened in the new belt upper wedge (1106) along the width direction of the new belt (1), the anti-skid rear support shaft (1507) passes through the axial hole, and the anti-skid rear second section connecting rod (1506) is hinged to the anti-skid rear support shaft (1507); the front swing rod spring (1508) is fixed on the frame (17) to support the new belt guide roller assembly (14).

5. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 1 is characterized in that: The left drive wheel assembly (16) comprises a first sprocket assembly (5), a left drive wheel left flange (1601), a left drive outer cylinder (1602), a left drive wheel right support sleeve (1603), a left drive wheel right shaft sleeve (1604), a left drive wheel right support seat (1605), a reducer connecting nut (1606), a reducer connecting bolt (1607), a support motor sleeve assembly (1608), a reduction motor (1609), a right connecting bolt (1610) and a right connecting The first sprocket assembly (5) comprises a first sprocket (501), a first sprocket screw (502), an output shaft key (503), a sprocket left support (504), and a sprocket left support sleeve (505); wherein the left end of the reduction motor (1609) is connected to the left end of the support motor sleeve assembly (1608) through the reduction motor connecting nut (1606) and the reduction motor connecting bolt (1607); the support motor sleeve assembly (1 The right end of the left drive wheel (1608) is fixedly connected to the right support (1605) of the left driving wheel through the right connecting bolt (1610) and the right connecting nut (1611); the output shaft of the reduction motor (1609) is fixedly connected to the first sprocket (501) through the output shaft key (503); the left sprocket support (504) is rotatably connected to the output shaft of the reduction motor (1609) through the left sprocket support sleeve (505); the first sprocket (501) ) is fixedly connected to the left drive wheel left flange (1601) through the first sprocket screw (502); the left drive wheel left flange (1601) is welded to the left end of the left drive outer cylinder (1602); the right end of the left drive outer cylinder (1602) is fixedly connected to the left drive wheel right support sleeve (1603); the left drive wheel right support sleeve (1603) is rotatably connected to the left drive wheel right support (1605) through the left drive wheel right shaft sleeve (1604).

6. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 1 is characterized in that: The old belt pressing roller assembly (7) comprises an old belt pressing roller left support shaft (701), an old belt pressing roller left support plate (702), an old belt pressing roller left support seat (703), an old belt pressing roller cylinder (704), an old belt pressing roller left support block (705), a friction plate (706), an old belt pressing roller spring right support plate (707), a butterfly spring (708), an old belt pressing roller right support shaft (709), an old belt pressing roller right support plate (710), an old belt pressing roller right support sleeve (711), an old belt pressing roller right support block (712), a pre-tightening nut (713), an old belt pressing roller left support sleeve (714), an old belt pressing roller pin shaft (715), an old belt pressing roller left wedge block (716), an old belt pressing roller wedge block pin shaft (717), a digital display jack (718), and a plurality of other components. 18), a spring stopper (719) and a right wedge block (720) of the old belt pressure roller; wherein the right end of the old belt pressure roller cylinder (704) is fixed on the right support plate (710) of the old belt pressure roller, and the right support plate (710) of the old belt pressure roller is fixedly connected to the left end of the right support shaft (709) of the old belt pressure roller; the right support sleeve (711) of the old belt pressure roller is placed in a circular hole opened at one end of the right support block (712) of the old belt pressure roller, and the right end of the right support shaft (709) of the old belt pressure roller is rotatably connected to the inner hole of the right support shaft (709) of the old belt pressure roller; the other end of the right support block (712) of the old belt pressure roller is supported on the frame (17) through the pin shaft (717) of the old belt pressure roller wedge block, and the old belt pressure roller is fixedly connected to the left end of the right support shaft (709) of the old belt pressure roller. The right support block (712) of the roller can move on the pin shaft (717) of the old belt pressure roller wedge block; the right wedge block (720) of the old belt pressure roller is H-shaped; the right support block (712) of the old belt pressure roller is placed in the chute at the lower part of the right wedge block (720) of the old belt pressure roller, and the digital display jack (718) is placed in the groove at the upper part of the right wedge block (720) of the old belt pressure roller; the overall width of the end of the right wedge block (720) of the old belt pressure roller located on the digital display jack (718) is greater than the overall width of the end of the right support block (712) of the old belt pressure roller; the left end of the old belt pressure roller cylinder (704) is fixed to the left support (703) of the old belt pressure roller through the pin shaft (715) of the old belt pressure roller; The left support shaft (701) of the old belt pressure roller is a stepped shaft. The left support seat (703) of the old belt pressure roller is rotatably connected to the circular shaft of the left support shaft (701) of the old belt pressure roller through the left support sleeve (714) of the old belt pressure roller. The friction plates (706) are placed in the left and right annular grooves of the left support seat (703) of the old belt pressure roller; the friction plate (706) on the right side is held against by the right support plate (707) of the old belt pressure roller spring; the pre-tightening nut (713) is fixed to the left support shaft (701) of the pressure roller through a threaded connection, and presses the butterfly spring (708) through the spring stopper (719); the butterfly spring (708) is placed in the right support plate (707) of the old belt pressure roller spring;The left support plate (702) of the old belt pressure roller is sleeved on the square shaft of the left support shaft (701) of the pressure roller. The right end of the left support plate (702) of the old belt pressure roller abuts against the left friction plate (706). The left end of the left support plate (702) of the old belt pressure roller contacts the left support block (705) of the old belt pressure roller. The upper part of the left support block (705) of the old belt pressure roller is sleeved on the square shaft of the left support shaft (701) of the pressure roller. The lower part is pinned by another wedge block of the old belt pressure roller. The shaft (717) is supported on the frame (17), and the old belt pressure roller left support block (705) can move on the old belt pressure roller wedge block pin (717); the old belt pressure roller left wedge block (716) is H-shaped, and the upper part of the old belt pressure roller left support block (705) is placed in the slide groove of the lower part of the old belt pressure roller left wedge block (716), and the other digital display jack (718) is placed in the groove of the old belt pressure roller left wedge block (716).

7. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 1 is characterized in that: The old belt guide roller assembly (12) comprises an old belt guide roller support shaft (1201), an old belt guide roller sleeve (1202), an old belt guide roller support (1203), an old belt guide roller inner seat (1204) and an old belt guide roller (1207); wherein, the old belt guide roller (1207) is fixed on the old belt guide roller inner seat (1204), the old belt guide roller inner seat (1204) is sleeved on the square shaft at one end of the old belt guide roller support shaft (1201), and the other end of the old belt guide roller support shaft (1201) is rotatably connected to the old belt guide roller support (1203) through the old belt guide roller sleeve (1202).

8. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 7 is characterized in that: The old belt guide roller assembly (12) further includes a guide half-ring assembly (1206), which is fixed to the old belt guide roller (1207) via a guide ring connecting bolt (1205), and the old belt (2) is placed between the left and right guide half-ring assemblies (1206).

9. The automatic belt changing device for a belt conveyor with a large inclination angle and long distance according to claim 1 is characterized in that: The left driving wheel assembly (16) and the right driving wheel assembly (8) are connected at both sides via left and right driving wheel support connecting rods (10).

Images