Material conveying device with reversing structure

Abstract

The invention belongs to the technical field of conveying equipment, and particularly relates to a material conveying device with a reversing structure, which comprises a plurality of racks arranged on one side of a building conveying window, and an electric control box arranged on the ground, and further comprises inclined conveying belt assemblies mounted in the corresponding racks, the multiple racks are distributed in a snake shape from top to bottom, and the discharging end of each inclined conveying belt assembly is arranged above the feeding end of the adjacent lower inclined conveying belt assembly. The multiple arc-shaped outer guide covers are fixed between every two adjacent racks, and one end of each arc-shaped outer guide cover extends to the discharging end of the adjacent upper inclined conveying belt assembly. Materials can be conveyed outwards from a plurality of windows at the position of a multi-storey building at the same time, the indoor material transferring link is reduced, the conveying efficiency is improved, the materials can be automatically reversed to the lower-layer conveying belt through cooperation of the arc-shaped structures, and excessive impact on the conveying belt during transition is reduced.

Description

Technical Field

[0001] This invention belongs to the field of conveying equipment technology, and in particular relates to a material conveying device with a reversing structure. Background Technology

[0002] Conveying equipment plays a core role in the continuous transport of materials. Through belts, screws, scrapers, and other means, it enables the efficient transfer of bulk materials and packaged goods, connects various production stages, and improves the material flow rate. It is a key piece of equipment for material transport in modern industrial production.

[0003] Currently, when materials in a multi-story workshop are transferred to transport vehicles via conveying equipment, since the conveying equipment has only one inlet, workers need to transfer all materials from different locations on different floors to the inlet of the conveying equipment. This not only adds extra transfer steps but also results in low conveying efficiency. To solve this problem, multi-story conveying devices are usually used to simultaneously load materials from different heights of the building, reducing intermediate transfer steps and improving conveying efficiency, such as the multi-story conveying device disclosed in patent publication number CN222539680U. However, when materials are transferred from the upper conveying structure to the lower conveying structure, the materials will impact the reversing structure used for transitioning materials due to conveying inertia. On the one hand, frequent impacts may cause deformation and damage to the reversing structure. On the other hand, when conveying soft materials, the soft materials will abut against the side wall of the reversing structure under the impact force, resulting in blockage. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a material conveying device with a reversing structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a material conveying device with a reversing structure, comprising multiple frames installed on one side of a building conveying window, and an electrical control box installed on the ground, and further comprising: Inclined conveyor belt assemblies are all installed in the corresponding frames. Multiple frames are arranged in a serpentine pattern from top to bottom. The discharge end of each inclined conveyor belt assembly is located above the feed end of the adjacent lower inclined conveyor belt assembly. Multiple arc-shaped outer guide covers are fixed between two adjacent frames, with one end of the arc-shaped outer guide cover extending to the discharge end of the adjacent upper inclined conveyor belt assembly and the other end extending to the feed end of the adjacent lower inclined conveyor belt assembly. A buffer unit is installed inside the arc-shaped outer guide cover. Multiple arc-shaped inner guide plates are all arranged inside the arc-shaped outer guide cover on the same side, and the arc-shaped inner guide plates are fixedly connected to the end of the frame on the same side; The buffer unit includes an arc-shaped buffer plate hinged inside the feed end of the arc-shaped outer guide cover, and the movable end of the buffer plate is in contact with the side wall of the arc-shaped inner guide plate.

[0006] Preferably, the buffer unit further includes at least one mounting sleeve inserted into the side wall of the arc-shaped outer guide cover, and an air cylinder is fixedly connected to the end of the mounting sleeve. A piston is slidably connected inside the air cylinder. A slide rod is slidably connected to the end of the piston and passed through the mounting sleeve to the inner side of the arc-shaped outer guide cover. A stop ball is fixedly connected to the end of the slide rod inside the arc-shaped outer guide cover. A return spring is fixed between the end of the piston away from the slide rod and the inner wall of the air cylinder. A throttling orifice is opened at the end of the air cylinder away from the slide rod. A pressure detection mechanism is installed at the end of the piston, and the piston is connected to the slide rod through the pressure detection mechanism.

[0007] Preferably, the pressure detection mechanism includes a movable plate fixedly installed at one end of the slide rod inside the air cylinder, and the movable plate and the piston are jointly equipped with an elastic support assembly. A pressure detector electrically connected to the electrical control box is also fixed between the movable plate and the piston. An active anti-blocking assembly is installed on the arc-shaped outer guide cover, and the electrical control box controls the active anti-blocking assembly to work according to the duration of the electrical signal fed back by the pressure detector.

[0008] Preferably, the active anti-blocking component includes mounting holes formed on the upper surface of the arc-shaped outer guide cover, and the mounting holes are located on one side of the hinge end of the buffer plate. The upper surface of the arc-shaped outer guide cover is fixed with a mounting plate corresponding to the position of the mounting holes, and electromagnetic push rods are fixedly inserted into both sides of the end face of the mounting plate. Movable blocks are fixed to the movable ends of the two electromagnetic push rods, and a push rod is rotatably connected between the two movable blocks. A protective plate is fixed to the inner side wall of the arc-shaped outer guide cover on one side of the hinge end of the buffer plate, and a timer is installed inside the protective plate. The electrical control box controls the timer to work according to the electrical signal fed back by the pressure detector, and the electrical control box controls the electromagnetic push rod to work according to the timing of the timer.

[0009] Preferably, a support frame installed on the ground is provided on the discharge end side of the lowest inclined conveyor belt assembly, and an outer horizontal conveyor belt assembly is installed inside the support frame.

[0010] Preferably, an inner horizontal conveyor belt assembly is installed inside the conveying window, and the discharge end of each inner horizontal conveyor belt assembly extends above the inclined conveyor belt assembly on the same side.

[0011] Preferably, each of the racks is equipped with a photoelectric switch assembly on its side wall, and the photoelectric switch assembly is electrically connected to the electrical control box.

[0012] Preferably, each of the inclined conveyor belt assemblies is fitted with a canopy on its outer side, each of the canopies is fixed on the same side of the frame, and one end of the lowermost canopy extends to the end of the support frame away from the frame.

[0013] Preferably, the inlet opening width of the arc-shaped outer guide cover is greater than the outlet opening width, and the outlet end of the arc-shaped outer guide cover is located at the middle of the upper surface of the corresponding inclined conveyor belt assembly.

[0014] Compared with existing technologies, the advantages of a material conveying device with a reversing structure are: 1. Through the design of multiple frames, electrical control boxes, inclined conveyor belt assemblies, arc-shaped outer guide covers, arc-shaped inner guide plates, and the serpentine distribution of the frames and inclined conveyor belt assemblies, materials can be simultaneously conveyed outward from multiple windows in multi-story buildings, reducing indoor material transfer links and improving conveying efficiency. Furthermore, the cooperation between the arc-shaped outer guide covers and the arc-shaped inner guide plates can automatically reverse the material onto the lower conveyor belt, effectively reducing excessive impact on the conveyor belt when the material transitions between the upper and lower conveyor belts.

[0015] 2. The buffer unit can be set to buffer and detect the material entering the arc-shaped outer guide cover, reduce the direct impact of the material on the arc-shaped outer guide cover, and help improve the structural stability at the junction of the upper and lower conveyor belts.

[0016] 3. The pressure detection mechanism inside the buffer unit can determine the uniformity of the soft material distribution based on the instantaneous impact force of the soft material on the buffer plate, and remind personnel to distribute the soft material evenly. Secondly, the active anti-blocking component can automatically push and discharge blocked material based on the time the material is inside the arc-shaped outer guide cover, thereby preventing material blockage and affecting the overall operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a material conveying device with a reversing structure provided by the present invention; Figure 2 This is a three-dimensional structural diagram of an arc-shaped outer guide cover of a material conveying device with a reversing structure provided by the present invention; Figure 3 This is a partial structural diagram of the inclined conveyor belt assembly of a material conveying device with a reversing structure provided by the present invention in a horizontal state; Figure 4 This invention provides a material conveying device with a reversing structure. Figure 3 Enlarged view of the structure of section A; Figure 5 This invention provides a material conveying device with a reversing structure. Figure 3 Enlarged view of the structure of section B; Figure 6 This is a three-dimensional structural diagram of a buffer plate of a material conveying device with a reversing structure provided by the present invention.

[0018] In the diagram: 1. Conveying window, 2. Frame, 3. Electrical control box, 4. Inclined conveyor belt assembly, 5. Arc-shaped outer guide cover, 6. Buffer unit, 61. Buffer plate, 62. Mounting sleeve, 63. Air cylinder, 64. Piston, 65. Slide rod, 66. Stop ball, 67. Return spring, 68. Throttling orifice, 7. Arc-shaped inner guide plate, 8. Pressure detection mechanism, 81. Movable plate, 82. Elastic support assembly, 83. Pressure detector, 9. Active anti-blocking assembly, 91. Mounting hole, 92. Mounting plate, 93. Electromagnetic push rod, 94. Movable block, 95. Push rod, 96. Protective plate, 97. Timer, 10. Support frame, 11. Outer horizontal conveyor belt assembly, 12. Inner horizontal conveyor belt assembly, 13. Photoelectric switch assembly, 14. Canopy. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-6 As shown, a material conveying device with a reversing structure includes multiple frames 2 installed on one side of a building conveying window 1, and an electrical control box 3 installed on the ground. An inner horizontal conveyor belt assembly 12 is installed inside the conveying window 1, and the discharge end of each inner horizontal conveyor belt assembly 12 extends above the inclined conveyor belt assembly 4 on the same side, so as to facilitate the transfer of materials from the room to the inclined conveyor belt assembly 4.

[0021] It also includes: inclined conveyor belt assembly 4, each of which is installed in a corresponding frame 2. Multiple frames 2 are distributed in a serpentine pattern from top to bottom. The discharge end of each inclined conveyor belt assembly 4 is located above the feed end of the adjacent lower inclined conveyor belt assembly 4. A support frame 10 installed on the ground is provided on one side of the discharge end of the lowest inclined conveyor belt assembly 4. An outer horizontal conveyor belt assembly 11 is installed inside the support frame 10. The support frame 10 is an adjustable bracket. The height of the outer horizontal conveyor belt assembly 11 can be adjusted by adjusting the support frame 10. The adjustable bracket can be manually adjusted by screws or other means, or electrically adjusted by hydraulic cylinders or other means.

[0022] Multiple arc-shaped outer guide covers 5 are fixed between two adjacent frames 2, and one end of the arc-shaped outer guide cover 5 extends to the discharge end of the adjacent upper inclined conveyor belt assembly 4, and the other end extends to the feed end of the adjacent lower inclined conveyor belt assembly 4. A buffer unit 6 is installed inside the arc-shaped outer guide cover 5, and multiple arc-shaped inner guide plates 7 are set inside the arc-shaped outer guide cover 5 on the same side, and the arc-shaped inner guide plates 7 are fixedly connected to the end of the frame 2 on the same side.

[0023] The buffer unit 6 includes an arc-shaped buffer plate 61 hinged inside the feed end of the arc-shaped outer guide cover 5. The movable end of the buffer plate 61 contacts the side wall of the arc-shaped inner guide plate 7. At least one mounting sleeve 62 is fixedly inserted into the side wall of the arc-shaped outer guide cover 5, and an air cylinder 63 is fixedly connected to the end of the mounting sleeve 62. A piston 64 is slidably connected inside the air cylinder 63. The end of the piston 64 is connected to a slide rod 65 that is slidably connected to the air cylinder 63, and one end of the slide rod 65 extends through the mounting sleeve 62 to the arc-shaped outer guide cover 7. Inside the guide cover 5, a ball stop 66 is fixedly connected to one end of the slide rod 65 inside the arc-shaped outer guide cover 5. A return spring 67 is fixed between the end of the piston 64 away from the slide rod 65 and the inner wall of the air cylinder 63. A throttling orifice 68 is opened at the end of the air cylinder 63 away from the slide rod 65. A pressure detection mechanism 8 is installed at the end of the piston 64. The piston 64 is connected to the slide rod 65 through the pressure detection mechanism 8. When the piston 64 moves upward, it will compress the air inside the air cylinder 63 and make the air discharged through the throttling orifice 68.

[0024] The pressure detection mechanism 8 includes a movable plate 81 fixedly installed at one end of the slide rod 65 inside the air cylinder 63. The movable plate 81 and the piston 64 are jointly equipped with an elastic support assembly 82. A pressure detector 83 electrically connected to the electrical control box 3 is also fixed between the movable plate 81 and the piston 64. An active anti-blocking assembly 9 is installed on the arc-shaped outer guide cover 5. The electrical control box 3 controls the active anti-blocking assembly 9 to work according to the duration of the electrical signal fed back by the pressure detector 83. The pressure detector 83 can convert the detected pressure into an electrical signal and feed it back to the electrical control box 3. The elastic support assembly 82 includes multiple round rods, multiple support springs, multiple nuts, and other components. The round rods are fixed at the end of the piston 64 and are slidably connected to the movable plate 81. The support springs are set between the piston 64 and the movable plate 81. The nuts are connected to the round rod nuts and are set on one side of the movable plate 81.

[0025] The active anti-blocking component 9 includes a mounting hole 91 on the upper surface of the arc-shaped outer guide cover 5, and the mounting hole 91 is located on the hinge end side of the buffer plate 61. The upper surface of the arc-shaped outer guide cover 5 is fixed with a mounting plate 92 corresponding to the position of the mounting hole 91. Electromagnetic push rods 93 are fixedly inserted into both sides of the end face of the mounting plate 92. Movable blocks 94 are fixed to the movable ends of the two electromagnetic push rods 93. The two movable blocks 94 are rotatably connected to a push rod 95. A protective plate 96 is fixed to the inner side wall of the arc-shaped outer guide cover 5 on the hinge end side of the buffer plate 61. A timer 97 is installed inside the protective plate 96. The electrical control box 3 controls the operation of the timer 97 according to the electrical signal fed back by the pressure detector 83. The electrical control box 3 controls the operation of the electromagnetic push rods 93 according to the timing time of the timer 97. The timing threshold is set based on parameters such as the rated weight of the soft package material, and it can be adjusted according to the transmission speed of the inclined conveyor belt assembly 4.

[0026] Each rack 2 has a photoelectric switch assembly 13 installed on its side wall, and the photoelectric switch assembly 13 is electrically connected to the electrical control box 3. The photoelectric switch assembly 13 includes a laser emitting end and a laser receiving end. The laser emitting end emits laser light, and the laser receiving end receives the laser light, converts the laser light into an electrical signal, and feeds it back to the electrical control box 3.

[0027] Each inclined conveyor belt assembly 4 is fitted with a canopy 14 on its outer side. Each canopy 14 is fixed on the same side frame 2, and one end of the lowest canopy 14 extends to the end of the support frame 10 away from the frame 2. The canopy 14 can prevent rainwater from damaging the materials.

[0028] The inlet opening width of the arc-shaped outer guide cover 5 is greater than the outlet opening width, and the outlet end of the arc-shaped outer guide cover 5 is located in the middle of the upper surface of the corresponding inclined conveyor belt assembly 4. The large inlet opening ensures that the material enters the interior of the arc-shaped outer guide cover 5, while the small outlet opening, located in the middle of the inclined conveyor belt assembly 4, ensures that the material can smoothly move to the middle position of the next inclined conveyor belt assembly 4 through the transition guidance of the arc-shaped outer guide cover 5.

[0029] The operating principle of this invention is explained as follows: When the electrical control box 3 is started, it controls the operation of each inner horizontal conveyor belt assembly 12, inclined conveyor belt assembly 4, and outer horizontal conveyor belt assembly 11. (The electrical control box 3 integrates a frequency conversion control system; the inner horizontal conveyor belt assembly 12, inclined conveyor belt assembly 4, and outer horizontal conveyor belt assembly 11 are all driven by stepper motors. The electrical control box 3 controls the stepper motors through the frequency conversion control system to regulate the conveying speed.) The staff inside place the soft-packaged material to be conveyed on the inner horizontal conveyor belt assembly 12, which then conveys the material to the inclined conveyor belt assembly 4 on the same side. Subsequently, the soft package material moves downward along the inclined conveyor belt assembly 4 on the same side. For the lowest inclined conveyor belt assembly 4, the soft package material conveyed by the inclined conveyor belt assembly 4 finally falls onto the outer horizontal conveyor belt assembly 11. The outer horizontal conveyor belt assembly 11 is responsible for connecting with the transport vehicle (the support frame 10 of the outer horizontal conveyor belt assembly 11 is an adjustable bracket. The height of the outer horizontal conveyor belt assembly 11 can be adjusted by adjusting the support frame 10. The adjustable bracket can be manually adjusted by screws or other means, or electrically adjusted by hydraulic cylinders or other means). That is, the soft package material on the outer horizontal conveyor belt assembly 11 will eventually be transported into the carriage of the transport vehicle. For the second and above inclined conveyor belt assemblies 4, the materials conveyed by the inclined conveyor belt assembly 4 will enter the corresponding arc-shaped outer guide cover 5. The soft packaged materials will impact the buffer plate 61 under their own weight and the inertia of the inclined conveyor belt assembly 4. The buffer plate 61 will start to rotate around the hinge point due to the impact of the material. Then the buffer plate 61 will impact the baffle ball 66. The baffle ball 66 will push the piston 64 to move through the slide rod 65, the movable plate 81 and the elastic support assembly 82. The piston 64 will squeeze the air on its upper side and discharge it from the throttle hole 68. Since the discharge capacity of the throttle hole 68 is limited, the impact force of the soft packaged materials on the buffer plate 61 can be converted into the force that compresses the air and the return spring 67, thereby effectively reducing the direct impact force of the soft packaged materials on the arc-shaped outer guide cover 5. Meanwhile, when the buffer plate 61 passes the impact baffle 66, the baffle 66 will apply squeezing force to the pressure detector 83 through the slide bar 65 and the movable plate 81. Since the material inside the soft package is flexible and movable, some bagged soft packages are unevenly distributed after being bagged. When all the material is concentrated on one side of the bag, the instantaneous impact force of the material on the buffer plate 61 is large due to the accumulation of material. At this time, the instantaneous pressure detected by the pressure detector 83 is also large, and the electrical signal strength fed back to the electrical control box 3 exceeds the threshold (this threshold is set based on parameters such as the rated weight of the soft package material). At this time, the electrical control box 3 will issue a voice prompt (a voice player is installed inside each conveying window 1), thereby reminding personnel to carefully check the uniformity of the soft package material, indirectly improving the uniformity of the soft package material, which is not only beneficial for conveying, but also facilitates the stable stacking of soft package material inside the transport vehicle. Meanwhile, when the soft package material gets stuck inside the arc-shaped outer guide cover 5, the pressure detector 83 will continuously detect the pressure due to the squeezing and pushing action of the soft package material on the buffer plate 61. At this time, the pressure detector 83 will continuously feed back an electrical signal, and the electrical control box 3 will control the timer 97 to count the duration of the electrical signal. When the count exceeds the threshold (this threshold is set based on parameters such as the rated weight of the soft package material, and it can be adjusted according to the transmission speed of the inclined conveyor belt assembly 4), it means that the soft package material has been stuck inside the arc-shaped outer guide cover 5 for too long. At this time, the electrical control box 3 will control the electromagnetic push rod 93 to work. The electromagnetic push rod 93 will push the extrusion push rod 95 to move through the movable block 94. Thus, the soft package material can be pushed downward along the inside of the arc-shaped outer guide cover 5 by the movement of the extrusion push rod 95 to avoid jamming and ensure the smooth transition of the soft package material. During the material conveying process, the emitting end of the photoelectric switch assembly 13 on the side wall of each frame 2 emits a laser, and the receiving end receives the laser. When the soft package material passes by the photoelectric switch assembly 13, the soft package material will block the laser, thereby blocking the laser from the emitting end of the photoelectric switch assembly 13 to the receiving end. At this time, the electrical signal fed back from the photoelectric switch assembly 13 to the electrical control box 3 is disconnected, which means that a soft package material has passed. Thus, the number of soft packages conveyed on each inclined conveyor belt assembly 4 can be detected by the photoelectric switch assembly 13. When the number of soft packages on a single inclined conveyor belt assembly 4 is too large, the electrical control box 3 will suspend the operation of the adjacent upper inclined conveyor belt assembly 4, thereby avoiding the excessive number of soft packages on a single inclined conveyor belt assembly 4.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A material conveying device with reverse structure, comprising a plurality of racks (2) arranged on one side of a building conveying window (1), and an electric control box (3) arranged at the ground, characterized in that, Also include: The inclined conveying belt assembly (4) is installed in the corresponding rack (2), and a plurality of racks (2) are distributed in a serpentine shape from top to bottom. The discharge end of each inclined conveying belt assembly (4) is arranged above the feeding end of the adjacent lower inclined conveying belt assembly (4); A plurality of arc-shaped outer guide covers (5) are fixed between adjacent two racks (2), and one end of the arc-shaped outer guide cover (5) extends to the discharge end of the adjacent upper inclined conveying belt assembly (4), and the other end extends to the feeding end of the adjacent lower inclined conveying belt assembly (4). The inside of the arc-shaped outer guide cover (5) is provided with a buffer unit (6); A plurality of arc-shaped inner guide plates (7) are arranged on the inner side of the arc-shaped outer guide cover (5) on the same side, and the arc-shaped inner guide plate (7) is fixedly connected with the end of the rack (2) on the same side. The buffer unit (6) includes an arc-shaped buffer plate (61) hinged inside the feeding end of the arc-shaped outer guide cover (5), and the movable end of the buffer plate (61) is in contact with the side wall of the arc-shaped inner guide plate (7).

2. A material conveying device with a reverse structure according to claim 1, characterized in that, The buffer unit (6) further comprises at least one mounting sleeve (62) inserted into the side wall of the arc-shaped outer guide cover (5), and the end of the mounting sleeve (62) is fixedly connected with a gas cylinder (63). The inside of the gas cylinder (63) is slidably connected with a piston (64), the end of the piston (64) is connected with a slide rod (65) slidably connected with the gas cylinder (63), one end of the slide rod (65) extends to the inside of the arc-shaped outer guide cover (5) through the mounting sleeve (62), one end of the slide rod (65) inside the arc-shaped outer guide cover (5) is fixedly connected with a ball stop (66), one end of the piston (64) away from the slide rod (65) is fixed with a return spring (67) between the inner cylinder wall of the gas cylinder (63), and one end of the gas cylinder (63) away from the slide rod (65) is provided with a throttle hole (68). The end of the piston (64) is provided with a pressure detection mechanism (8), and the piston (64) is connected with the slide rod (65) through the pressure detection mechanism (8).

3. A material conveying device with a reversing structure according to claim 2, characterized in that The pressure detection mechanism (8) includes a movable plate (81) fixedly installed on one end of the slide rod (65) inside the gas cylinder (63), and the movable plate (81) and the piston (64) are jointly provided with an elastic support assembly (82). A pressure detector (83) electrically connected with the electric control box (3) is further fixed between the movable plate (81) and the piston (64). The arc-shaped outer guide cover (5) is provided with a driven anti-blocking assembly (9), and the electric control box (3) controls the working of the driven anti-blocking assembly (9) according to the duration of the electric signal feedback by the pressure detector (83).

4. A material conveying device with a reversing structure according to claim 3, characterized in that The active anti-blocking assembly (9) comprises a mounting hole (91) formed in the upper surface of the arc-shaped outer guide cover (5), and the mounting hole (91) is arranged at the hinged end of the buffer plate (61). The upper surface of the arc-shaped outer guide cover (5) is fixed with a mounting plate (92) corresponding to the position of the mounting hole (91), and the end surface of the mounting plate (92) is fixedly inserted with an electromagnetic push rod (93) on both sides. The movable end of the two electromagnetic push rods (93) is fixedly connected with a movable block (94), and the movable block (94) is rotatably connected with a push rod (95) between the two movable blocks (94). The inner side wall of the arc-shaped outer guide cover (5) is fixed with a protective plate (96) at the hinged end of the buffer plate (61), and the inside of the protective plate (96) is provided with a timer (97). The electric control box (3) controls the working of the timer (97) according to the electric signal feedback by the pressure detector (83), and the electric control box (3) controls the working of the electromagnetic push rod (93) according to the timing time of the timer (97).

5. The material conveying device with a reverse structure according to claim 1, characterized in that, The discharge end of the lowermost inclined conveying belt assembly (4) is provided with a support frame (10) installed on the ground, and the inside of the support frame (10) is installed with an outer horizontal conveying belt assembly (11).

6. A material conveying device with a reverse structure according to claim 1, characterized in that, The inside of the conveying window (1) is installed with an inner horizontal conveying belt assembly (12), and the discharge end of each inner horizontal conveying belt assembly (12) extends above the same side inclined conveying belt assembly (4).

7. A material conveying device with a reverse structure according to claim 1, characterized in that, The side wall of each rack (2) is installed with a photoelectric switch assembly (13), and the photoelectric switch assembly (13) is electrically connected with the electric control box (3).

8. A material conveying device with a reverse structure according to claim 5, characterized in that, The outer side of each inclined conveying belt assembly (4) is sleeved with a rain shelter (14), each rain shelter (14) is fixed on the same side rack (2), and one end of the lowermost rain shelter (14) extends to the end of the support frame (10) away from the rack (2).

9. The material conveying device with a reverse structure according to claim 1, characterized in that, The feeding end opening width of the arc-shaped outer guide cover (5) is greater than the discharge end opening width, and the discharge end of the arc-shaped outer guide cover (5) is arranged at the middle of the upper surface of the corresponding inclined conveying belt assembly (4).

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