Conveying device with inverted eight-type feeding port

Abstract

The invention relates to the technical field of conveying, in particular to a conveying device with an inverted eight-type feeding port, which comprises a first conveying belt, a discharging hopper and two protective frames and further comprises a movable plate, a hinge arm, a shielding cover and a pressed plate, the movable plate is arranged on the protective frames and can elastically slide in the height direction of the protective frames, and the hinge arm is hinged to the movable plate; the pressed plate is rotationally connected to the interior of the discharging hopper, the shielding cover is arranged on the discharging hopper, the pressed plate is provided with a cam pushing the movable plate to slide and a connecting shaft so as to drive the first conveying belt to rotate, and a first gear and a second gear are installed on the connecting shaft; according to the conveying device with the inverted eight-type feeding port, when materials are stacked in the discharging hopper, the rotating speed of the first conveying belt is increased, so that the materials in the discharging hopper are rapidly conveyed outwards, the effect of automatically adjusting the conveying speed is achieved, the materials are prevented from being stacked in the discharging hopper, and the labor cost of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of conveying, and in particular to a conveying device with an inverted eight-type feed port. Background Art

[0002] Conveyor belts, also known as belt conveyors, are widely used in agriculture, industrial and mining enterprises, and transportation industries to transport various solid block and powder materials or finished items. Conveyor belts can transport continuously, efficiently, and at a large angle. Conveyor belts are safe to operate, easy to use, easy to maintain, and have low freight costs. They can also shorten transportation distances, reduce project costs, and save manpower and material resources. Grain purchasing stations generally pour the purchased bagged grain onto the conveyor belt, and then transport the grain to a designated location for centralized storage via the conveyor belt.

[0003] A Chinese patent application document with publication number CN108438742A discloses an efficient grain conveying system, which includes a frame, two driven rollers connected to both sides of the frame, a fixed bracket arranged at the bottom of the frame, an active roller connected to the fixed bracket, a conveyor belt connected to the outside of the driven roller and the active roller, a control cabinet arranged at the side of the frame, and a discharge port arranged on one side of the bottom of the frame. The frame is composed of a plurality of identical side panels connected by bolts and a support rod connected between the side panels, the side panel is a groove-type structure, a sealing cover is connected to the top surface of the frame, a feed hopper is arranged on one side of the sealing cover, a feed sensing device is connected to the feed hopper, a driving wheel is arranged at the bottom of the front end of the frame, a rear wheel is arranged at the bottom of the rear end of the frame, a lifting device is connected between the rear wheel and the bottom of the frame, a motor is arranged on the fixed bracket, and conveyor belt offset adjustment devices are arranged on both sides of the outside of each driven roller.

[0004] However, the structural design of the above-mentioned related technology is as follows: in the process of conveying materials on the conveyor belt, the materials need to be loaded into the feed hopper first, and then the materials fall onto the conveyor belt through the feed hopper for transportation. When the material is loaded into the feed hopper at a fast speed, due to the constant conveying speed of the conveyor belt, it is easy to cause the materials to accumulate in the feed port, making it impossible for the materials in the feed hopper to be discharged quickly. When the feed hopper is filled, if there is still material left in the bag, the staff needs to hold the bag containing grain and wait for the material level in the feed hopper to drop before continuing to fill it, or put the bag down and wait for the material level in the feed hopper to drop before picking up the bag to continue filling it, which makes the labor cost high and time-consuming and labor-intensive.

[0005] Therefore, a conveying device with an inverted eight-type feed port is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The present invention provides a conveying device with an inverted eight-type feed port, aiming to solve the problem in the related art that when the material filling speed is fast, the material is easily accumulated in the feed port.

[0007] The conveying device of the inverted eight-type feed port of the present invention comprises a conveying belt, a lower hopper and two protective frames, and also comprises: A movable plate is arranged on the protective frame and can slide elastically along the height direction thereof, and a hinged arm is hingedly connected to the movable plate; A shielding cover and a pressure plate arranged in the shielding cover, the pressure plate is rotatably connected to the inside of the lower hopper, the shielding cover is arranged on the lower hopper, and a cam is arranged on the pressure plate to push the movable plate to slide; A connecting shaft is used to drive the conveyor belt 1 to rotate, and a gear 1 and a gear 2 are installed on the connecting shaft; An inner spline shaft 2 and an outer spline shaft 2, gear 3 and gear 4 are installed on the inner spline shaft 2, the connecting shaft and the outer spline shaft 2 are both rotatably set on the protective frame, the inner spline shaft 2 is slidably set on the outer spline shaft 2, one end of the articulated arm is hinged on the inner spline shaft 2, and the movable plate pushes the inner spline shaft 2 to slide through the articulated arm, so that gear 4 is meshed with gear 2, thereby increasing the transmission speed of the conveyor belt 1.

[0008] Beneficial effect: When materials are accumulated in the lower hopper, the pressure plate drives the cam to rotate, and the cam presses the movable plate downward. During the downward movement of the movable plate, the articulated arm drives the inner spline shaft 2 to move horizontally along the length direction of the outer spline shaft 2, so that the gear 2 is meshed with the gear 4. At this time, the speed of the conveyor belt 1 is increased to quickly convey the materials in the lower hopper outward, achieving the effect of automatically adjusting the conveying speed, avoiding the accumulation of materials in the lower hopper, and reducing the labor cost of the staff.

[0009] Preferably, a fixed plate is installed on one side of the protective frame, a sliding rod is installed on the top of the fixed plate, the movable plate is slidably connected to the outside of the sliding rod, a plurality of fixed rods are installed on one side of the movable plate, and a material blocking assembly is installed on the fixed rod.

[0010] The effect is that when the cam presses the movable plate downward, the movable plate drives the material blocking assembly to move downward through the fixed rod, so that the material blocking assembly contacts the edge of the conveyor belt.

[0011] Preferably, the material blocking assembly includes a movable frame, a conveyor belt 2, an external spline shaft 1 and a baffle, the movable frame is located in a protective frame, the fixed rod is installed on the movable frame, the conveyor belt 2 is rotatably installed on the movable frame, and the external spline shaft 1 is installed at the bottom end of one of the rotating rollers of the conveyor belt 2.

[0012] The effect is that when the outer spline shaft 1 rotates, it can drive the conveyor belt 2 to rotate on one side of the conveyor belt 1 to synchronously convey the materials.

[0013] Preferably, a rotating shaft is installed at both ends of one of the transmission rollers of the conveyor belt, and the rotating shaft is rotatably connected to the inner wall of the protective frame. One of the rotating shafts is connected to the connecting shaft, and a bevel gear 1 is installed on the rotating shaft. The top of the bevel gear 1 is meshed with a bevel gear 2, and an inner spline shaft 1 is installed on the bevel gear 2, and the outer spline shaft 1 is located directly below the inner spline shaft 1.

[0014] The effect is that when the movable plate moves downward, it can drive the outer spline shaft 1 to be inserted into the inner spline shaft 1, and the inner spline shaft 1 drives the conveyor belt 2 to rotate through the outer spline shaft 1, so that the rotation speeds of the conveyor belt 1 and the conveyor belt 2 are the same, so as to reduce the friction between the material at the edge of the conveyor belt 1 and the outside world, thereby preventing the material from being seriously broken due to excessive transmission speed.

[0015] Preferably, a rotating rod is rotatably connected to the inner wall of the lower hopper, the pressure plate is installed on the rotating rod, fixed columns are installed at both ends of the rotating rod, a rotating shaft is transmission-connected to the fixed column, and the cam is installed on the rotating shaft.

[0016] Preferably, a mounting box is installed on one of the protective frames, and one end of the connecting shaft and the second external spline shaft are rotatably connected to the mounting box.

[0017] Preferably, a connecting ring is rotatably connected to the outer side of one end of the inner spline shaft 2, an elastic member 2 is installed at one end of the connecting ring, and one end of the elastic member 2 is installed on the inner wall of the installation box.

[0018] The effect is that when the pressure plate is reset, the movable plate is reset synchronously, and at the same time, the elastic member 2 pushes the inner spline shaft 2 to reset through the connecting ring, so that the gear 1 and the gear 3 are meshed, so that the conveying speed of the conveyor belt 1 is reduced.

[0019] Preferably, the diameter of gear three is smaller than the diameter of gear four, and the diameter of gear four is larger than the diameter of gear one.

[0020] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when materials are accumulated in the lower hopper, the pressure plate drives the cam to rotate, so that the movable plate moves downward, and at the same time, the movable plate drives the inner spline shaft 2 to move horizontally along the length direction of the outer spline shaft 2 through the hinged arm, so that the gear 2 is meshed with the gear 4, and the rotation speed of the conveyor belt 1 is increased, so as to quickly convey the materials in the lower hopper outward, thereby achieving the effect of automatically adjusting the conveying speed, avoiding the accumulation of materials in the lower hopper, and reducing the labor cost of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall main structure of a specific embodiment of the present invention.

[0022] Figure 2It is a schematic structural diagram of a conveyor belt 1 according to a specific embodiment of the present invention.

[0023] Figure 3 For the specific embodiment of the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 4 It is a schematic diagram of the partial structure of a protection frame according to a specific embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the partial structure of a movable frame in a specific embodiment of the present invention.

[0026] Figure 6 It is a schematic structural diagram of a lower hopper in a specific embodiment of the present invention.

[0027] Figure 7 It is a schematic structural diagram of an installation box according to a specific embodiment of the present invention.

[0028] Figure 8 It is a schematic structural diagram of a driven component in a specific embodiment of the present invention.

[0029] Fig. 9 It is a schematic diagram of the structure of the active component of a specific embodiment of the present invention.

[0030] Reference numerals: 11. Support frame; 12. Roller; 21. Conveyor belt 1; 22. Protective frame; 23. Push assembly; 231. Fixed plate; 232. Slide rod; 233. Elastic member 1; 234. Movable plate; 235. Articulated seat 1; 236. Articulated arm; 237. Fixed rod; 24. Material blocking assembly; 241. Movable frame; 242. Conveyor belt 2; 243. External spline shaft 1; 244. Baffle plate; 25. Slide groove; 26. Transmission member; 261. Rotating shaft; 262. Bevel gear 1; 27. Bevel gear 2; 28. Internal spline shaft 1; 29. ​​Support plate; 31. lower hopper; 32. rotating rod; 33. pressure plate; 34. shielding cover; 35. extrusion assembly; 351. fixing column; 352. transmission wheel 1; 353. transmission wheel 2; 354. rotating shaft; 355. cam; 41. Installation box; 42. Motor; 43. Driven component; 431. Connecting shaft; 432. Gear 1; 433. Gear 2; 44. Active component; 441. Internal spline shaft 2; 442. Gear 3; 443. Gear 4; 444. Connecting ring; 445. Elastic member 2; 446. External spline shaft 2; 447. Connecting plate; 448. Articulated seat 2. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figures 1 to 9 As shown, the conveying device of the inverted eight-type feed port of the present invention includes a supporting mechanism, a conveying mechanism, a material discharge mechanism and a driving mechanism. The conveying mechanism is arranged on the supporting mechanism, the material discharge mechanism is arranged on the conveying mechanism to drive the material to move, and the driving mechanism is arranged on one side of the conveying mechanism to drive the conveying mechanism to operate.

[0033] like Figure 1 As shown, the support mechanism includes a support frame 11 and rollers 12. The support frame 11 is tilted. There are four rollers 12, which are respectively installed at the four corners of the bottom of the support frame 11. In this embodiment, the rollers 12 are universal wheels with brake pads.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the conveying mechanism includes a conveyor belt 21, a protective frame 22, a push assembly 23, a material stop assembly 24 and a transmission member 26. The number of each of the protective frame 22, the push assembly 23, the material stop assembly 24 and the transmission member 26 is two. The conveyor belt 21 is arranged between two protective frames 22. The surface of the conveyor belt 21 has a V-shaped rubber strip to increase the friction force on the surface of the conveyor belt 21. The interior of the conveyor belt 21 has two transmission rollers. Two transmission members 26 are respectively installed at the two ends of one of the transmission rollers in the conveyor belt 21. The transmission member 26 is rotatably connected to one side of the inner wall of the protective frame 22, and the driving mechanism is connected to one of the transmission members 26. The protective frame 22 has an opening on one side close to the conveyor belt 21. The two protective frames 22 are respectively installed on both sides of the top of the support frame 11. The support frame 11 and the protective frame 22 have the same inclination angle. The two push assemblies 23 are respectively arranged on one side of the two protective frames 22, and the two material stop assemblies 24 are respectively arranged in the openings of the two protective frames 22.

[0035] The driving mechanism drives the conveyor belt 21 to run, and then pours the material into the unloading mechanism. The material falls onto the conveyor belt 21 through the unloading mechanism. At this time, the material is transported to the end of the conveyor belt 21 through the conveyor belt 21 to transport the material to the designated location.

[0036] like Figures 1 to 4 As shown, the push assembly 23 includes a fixed plate 231, a slide bar 232, an elastic member 233, a movable plate 234, a hinge seat 235, a hinge arm 236 and a fixed rod 237. The fixed plate 231 is installed on one side of the protective frame 22, and there are two slide bars 232, which are installed on the top of the fixed plate 231.

[0037] The movable plate 234 is slidably connected to the outer side of the slide bar 232 along the length direction of the slide bar 232, and the elastic member 233 is sleeved on the outer side of the slide bar 232. In this embodiment, the elastic member 233 is a spring, and the elastic member 233 is installed between the fixed plate 231 and the movable plate 234 to drive the movable plate 234 to reset. The hinge seat 235 is installed on one side of the bottom of the movable plate 234, and the hinge arm 236 is hinged to one end of the hinge seat 235.

[0038] There are three fixed rods 237 , which are installed on one side of the movable plate 234 . One end of the fixed rod 237 passes through one side of the protective frame 22 and is installed on the material blocking assembly 24 . The protective frame 22 is provided with a slide groove 25 for the fixed rod 237 to slide.

[0039] like Figures 1 to 5 As shown, the material blocking assembly 24 includes a movable frame 241, a conveyor belt 242, an external spline shaft 1 243 and a baffle 244. The movable frame 241 is U-shaped and is located in the opening of the protective frame 22. One end of the fixed rod 237 is installed on one side of the movable frame 241. The conveyor belt 242 is rotatably installed inside the movable frame 241. The conveyor belt 242 has two rotating rollers inside. The external spline shaft 1 243 is installed at the bottom end of one of the rotating rollers of the conveyor belt 242. The external spline shaft 1 243 passes through the bottom of the movable frame 241 and extends to the outside of the movable frame 241. The movable frame 241 is provided with a hole for the external spline shaft 1 243 to rotate. The baffle 244 is installed on one side of the bottom of the movable frame 241.

[0040] The movable frame 241, the baffle plate 244, the protective frame 22 and one side of the conveyor belt 242 are all located in the same horizontal plane. In the initial position, the baffle plate 244 contacts the edge of the conveyor belt 1 21.

[0041] like Figure 2 , Figure 4 and Figure 7 As shown, the transmission member 26 includes a rotating shaft 261 and a bevel gear 1 262. One end of the rotating shaft 261 is mounted on one end of one of the transmission rollers of the conveyor belt 1 21, and the other end of the rotating shaft 261 is rotatably connected to one side of the inner wall of the protection frame 22, and the bevel gear 1 262 is mounted on the outer side of the rotating shaft 261. The top of the bevel gear 1 262 is meshedly connected with a bevel gear 27, and the top of the bevel gear 27 is mounted with an inner spline shaft 1 28, which is located directly below the outer spline shaft 1 243, and the outer side of the inner spline shaft 1 28 is rotatably connected with a support plate 29, which is mounted on one side of the inner wall of the protection frame 22.

[0042] The conveyor belt 1 21 drives the rotating shaft 261 to rotate through the transmission roller thereon, and the rotating shaft 261 can drive the internal spline shaft 1 28 on the bevel gear 2 27 to rotate through the bevel gear 1 262 .

[0043] like Figure 1 and Figure 6 As shown, the material discharging mechanism includes a discharging hopper 31, a rotating rod 32, a pressure plate 33, a shielding cover 34 and an extrusion assembly 35. The interior of the discharging hopper 31 is in an inverted eight shape. The discharging hopper 31 is installed on the top of the protective frame 22 and is located above the head end of the conveyor belt 21. The two ends of the rotating rod 32 are respectively rotatably connected to the two sides of the inner wall of the discharging hopper 31. There are two pressure plates 33, and the two pressure plates 33 are respectively installed on the outside of the two ends of the rotating rod 32. The shielding cover 34 is fan-shaped and is located on the outside of the pressure plate 33. One side of the shielding cover 34 is installed on the inner wall of the discharging hopper 31. In the initial position, the pressure plate 33 can close the shielding cover 34. There are two extrusion assemblies 35, and the two extrusion assemblies 35 are respectively arranged at the two ends of the rotating rod 32.

[0044] Continue to refer Figure 1 and Figure 6 As shown, the extrusion assembly 35 includes a fixed column 351, a transmission wheel 1 352, a transmission wheel 2 353, a rotating shaft 354 and a cam 355. The fixed column 351 is installed at one end of the rotating rod 32, and one end of the fixed column 351 passes through the lower hopper 31 and extends to the outside of the lower hopper 31. A torque spring (not shown in the figure) is provided on the fixed column 351 to drive the fixed column 351 to reset. The transmission wheel 1 352 is installed on the outer side of one end of the fixed column 351. In this embodiment, the transmission wheel 1 352 and the transmission wheel 2 353 are both pulleys, and the transmission wheel 1 352 and the transmission wheel 2 353 are connected by belt transmission. In other embodiments, the transmission wheel 1 352 and the transmission wheel 2 353 are both sprockets, and the transmission wheel 1 352 and the transmission wheel 2 353 are connected by chain transmission.

[0045] The rotating shaft 354 is installed inside the transmission wheel 353, one end of the rotating shaft 354 is rotatably connected to the bottom of one side of the lower hopper 31, and the cam 355 is installed on the outside of the rotating shaft 354, and the cam 355 contacts the top of the movable plate 234.

[0046] When materials are accumulated in the lower hopper 31, the pressure plate 33 is squeezed by the materials and starts to rotate around the rotating rod 32. The rotating rod 32 drives the cam 355 on the rotating shaft 354 to rotate through the fixed column 351. At this time, the cam 355 squeezes the movable plate 234 downward, and the movable plate 234 drives the movable frame 241 to move downward through the fixed rod 237. At the same time, the conveyor belt 242, the outer spline shaft 1 243 and the baffle 244 move downward synchronously with the movable frame 241, so that the conveyor belt 242 moves to one side of the conveyor belt 1 21, and the outer spline shaft 1 243 is inserted into the inner spline shaft 1 28. At this time, the inner spline shaft 1 28 drives the outer spline shaft 1 243 to rotate, so that the speeds of the conveyor belts 1 21 and 242 are the same.

[0047] like Figure 1 and Figure 7 As shown, the driving mechanism includes a mounting box 41, a motor 42, a driven component 43 and a driving component 44. The mounting box 41 is mounted on one side of one of the protective frames 22, and the motor 42 is mounted on one side of the mounting box 41. The driven component 43 and the driving component 44 are both arranged inside the mounting box 41, the driven component 43 and the driving component 44 are meshed, the driving shaft of the motor 42 is mounted on the driving component 44, and the driven component 43 is mounted on one end of the rotating shaft 261.

[0048] The motor 42 drives the driven component 43 to rotate through the active component 44, and the driven component 43 can drive the conveyor belt 21 to rotate through the rotating shaft 261.

[0049] like Figure 7 and Figure 8 As shown, the driven assembly 43 includes a connecting shaft 431, a gear 1 432 and a gear 2 433. One end of the connecting shaft 431 penetrates the protection frame 22 and is installed at one end of the rotating shaft 261, and the other end of the connecting shaft 431 is rotatably connected to the inner wall of the mounting box 41. The gear 1 432 and the gear 2 433 are both installed on the outer side of the connecting shaft 431, and there is a gap between the gear 1 432 and the gear 2 433. The diameter of the gear 1 432 is greater than the diameter of the gear 2 433.

[0050] like Figure 3 , Figure 7 and Figure 8 As shown, the active component 44 includes an inner spline shaft 2 441, a gear 3 442, a gear 443, a connecting ring 444, an elastic member 2 445, an outer spline shaft 2 446, a connecting plate 447 and a hinge seat 2 448. The gear 3 442 and the gear 4 443 are both installed on the outer side of the inner spline shaft 2 441, the diameter of the gear 3 442 is smaller than the diameter of the gear 4 443, and the diameter of the gear 4 443 is larger than the diameter of the gear 1 432. In the initial position, the gear 3 442 is meshed with the gear 1 432.

[0051] One end of the second inner spline shaft 441 is rotatably connected to a connecting ring 444, and one end of the connecting ring 444 is installed with a second elastic member 445. In this embodiment, the second elastic member 445 is a spring. In other embodiments, the second elastic member 445 is an elastic sheet. One end of the second elastic member 445 is installed on the inner wall of the installation box 41. The second inner spline shaft 441 is slidably connected to the outside of the second outer spline shaft 446. One end of the second outer spline shaft 446 is fixed to the drive shaft on the motor 42. The connecting plate 447 is rotatably connected to the outside of the other end of the second inner spline shaft 441. The second articulated seat 448 is installed on the top of the connecting plate 447. One end of the articulated arm 236 is articulated to the second articulated seat 448. The installation box 41 is provided with a groove for the articulated arm 236 to slide.

[0052] When the movable plate 234 moves downward, the articulated seat 1 235 drives the connecting plate 447 on the articulated seat 2 448 to move horizontally along the length direction of the external spline shaft 2 446 through the articulated arm 236, so that the gear 1 432 is disengaged from the gear 3 442, and the gear 2 433 is engaged with the gear 4 443. At this time, the rotation speed of the connecting shaft 431 is increased, thereby increasing the rotation speed of the conveyor belt 1 21, so that the material in the lower hopper 31 can be quickly conveyed outward, thereby achieving the effect of automatically adjusting the conveying speed, avoiding the accumulation of materials in the lower hopper 31, and reducing the labor cost of the staff.

[0053] Working principle: When conveying materials, start the motor 42, the motor 42 drives the inner spline shaft 2 441 to rotate through the outer spline shaft 2 446, the inner spline shaft 2 441 drives the connecting shaft 431 in the gear 1 432 to rotate through the gear 3 442, the connecting shaft 431 drives the conveyor belt 1 21 to rotate through the rotating shaft 261, and then the material is added to the lower hopper 31, the material falls to the head end of the conveyor belt 1 21 through the lower hopper 31 and is transported to the designated position by the conveyor belt 1 21.

[0054] When materials are accumulated in the lower hopper 31, the pressure plate 33 drives the cam 355 on the rotating shaft 354 to rotate through the fixed column 351 on the rotating rod 32, and the cam 355 presses the movable plate 234 downward. The movable plate 234 drives the movable frame 241 to move downward through the fixed rod 237, so that the conveyor belt 242 moves to one side of the conveyor belt 1 21, and the outer spline shaft 1 243 is inserted into the inner spline shaft 1 28. At this time, the inner spline shaft 1 28 drives the outer spline shaft 1 243 to rotate, so that the rotation speeds of the conveyor belt 1 21 and the conveyor belt 2 242 are the same.

[0055] When the movable plate 234 moves downward, the articulated seat 1 235 drives the connecting plate 447 on the articulated seat 2 448 to move through the articulated arm 236, and the connecting plate 447 drives the inner spline shaft 2 441 to move horizontally along the length direction of the outer spline shaft 2 446, so that the gear 2 433 is meshed with the gear 4 443. At this time, the rotation speed of the conveyor belt 1 21 is increased to quickly convey the material in the lower hopper 31 outward, thereby achieving the effect of automatically adjusting the conveying speed, avoiding the accumulation of materials in the lower hopper 31, so as to reduce the labor cost of the staff, and at the same time, through the two conveyor belts 242 with the same rotation speed as the conveyor belt 1 21, the friction between the material at the edge of the conveyor belt 21 and the outside world can be reduced, thereby preventing the material from being seriously broken due to excessive transmission speed.

[0056] When the material accumulation height in the lower hopper 31 decreases, under the action of the torque spring, the pressure plate 33 is reset, and at the same time, the conveyor belt 242 is reset, the gear 1 432 is meshed with the gear 3 442, and the speed of the conveyor belt 1 21 is reduced to the initial speed to avoid the conveyor belt 1 21 running at high speed for a long time, resulting in a shortened service life.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A conveying device with an inverted eight-type feed port, comprising a conveyor belt (21), a lower hopper (31) and two protective frames (22), characterized in that: Also includes: A movable plate (234) is disposed on the protective frame (22) and is capable of elastically sliding along the height direction thereof, and a hinged arm (236) is hingedly connected to the movable plate (234); A shielding cover (34) and a pressure plate (33) disposed in the shielding cover (34), wherein the pressure plate (33) is rotatably connected to the interior of the lower hopper (31), the shielding cover (34) is disposed on the lower hopper (31), and a cam (355) is disposed on the pressure plate (33) for pushing the movable plate (234) to slide; A connecting shaft (431) is used to drive the conveyor belt 1 (21) to rotate, and a gear 1 (432) and a gear 2 (433) are mounted on the connecting shaft (431); An inner spline shaft 2 (441) and an outer spline shaft 2 (446), a gear 3 (442) and a gear 4 (443) are installed on the inner spline shaft 2 (441), the connecting shaft (431) and the outer spline shaft 2 (446) are both rotatably arranged on the protective frame (22), the inner spline shaft 2 (441) is slidably arranged on the outer spline shaft 2 (446), one end of the hinged arm (236) is hinged on the inner spline shaft 2 (441), and the movable plate (234) pushes the inner spline shaft 2 (441) to slide through the hinged arm (236), so that the gear 4 (443) is meshed with the gear 2 (433), thereby increasing the transmission speed of the conveyor belt 1 (21).

2. The conveying device of the inverted eight-type feed port according to claim 1 is characterized in that: A fixed plate (231) is installed on one side of the protective frame (22), a sliding rod (232) is installed on the top of the fixed plate (231), the movable plate (234) is slidably connected to the outside of the sliding rod (232), a plurality of fixed rods (237) are installed on one side of the movable plate (234), and a material blocking assembly (24) is installed on the fixed rods (237).

3. The conveying device of the inverted eight-type feed port according to claim 2 is characterized in that: The material blocking assembly (24) comprises a movable frame (241), a second conveyor belt (242), an external spline shaft (243) and a baffle (244); the movable frame (241) is located in the protective frame (22); the fixed rod (237) is mounted on the movable frame (241); the second conveyor belt (242) is rotatably mounted on the movable frame (241); and the external spline shaft (243) is mounted on the bottom end of one of the rotating rollers of the second conveyor belt (242).

4. The conveying device of the inverted eight-type feed port according to claim 3 is characterized in that: A rotating shaft (261) is installed at both ends of one of the transmission rollers of the conveyor belt 1 (21), and the rotating shaft (261) is rotatably connected to the inner wall of the protective frame (22), one of the rotating shafts (261) is connected to the connecting shaft (431), and a bevel gear 1 (262) is installed on the rotating shaft (261), and a bevel gear 2 (27) is meshed with the top of the bevel gear 1 (262), and an inner spline shaft 1 (28) is installed on the bevel gear 2 (27), and the outer spline shaft 1 (243) is located directly below the inner spline shaft 1 (28).

5. The conveying device of the inverted eight-type feed port according to claim 1 is characterized in that: A rotating rod (32) is rotatably connected to the inner wall of the lower hopper (31), the pressure plate (33) is mounted on the rotating rod (32), fixed columns (351) are mounted on both ends of the rotating rod (32), a rotating shaft (354) is transmission-connected to the fixed column (351), and the cam (355) is mounted on the rotating shaft (354).

6. The conveying device of the inverted eight-type feed port according to claim 1 is characterized in that: A mounting box (41) is mounted on one of the protection frames (22), and one end of the connecting shaft (431) and the second external spline shaft (446) are both rotatably connected to the mounting box (41).

7. The conveying device of the inverted eight-type feed port according to claim 6 is characterized in that: One end of the second internal spline shaft (441) is rotatably connected to a connecting ring (444) on the outside, one end of the connecting ring (444) is mounted with a second elastic member (445), and one end of the second elastic member (445) is mounted on the inner wall of the mounting box (41).

8. The conveying device with an inverted eight-shaped feed port according to any one of claims 1 to 7, characterized in that: The diameter of the gear three (442) is smaller than the diameter of the gear four (443), and the diameter of the gear four (443) is larger than the diameter of the gear one (432).

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