A modified multi-point unloader

Abstract

This invention discloses a modified multi-point unloader, comprising a traveling beam, a belt, a first lifting roller, a second lifting roller, and a motor. The belt carries a deep-groove idler roller, the first lifting roller, and the second lifting roller mounted on the traveling beam. When the first lifting roller moves upward, the upper end face of a first sliding sleeve contacts a rotating bearing, driving a thrust lever to press down a lifting connecting rod, which in turn moves the second lifting roller downward, creating a height difference between the belt and the first and second lifting rollers. As the first lifting roller moves downward, a fixed pin on the first sliding sleeve moves downward within a groove in the upward connecting rod, pulling the upward connecting rod downward. This causes the thrust lever to press down, driving the lifting connecting rod upward, and the second lifting roller is pulled along by the lifting connecting rod, restoring the height difference between the belt and the first and second lifting rollers. This invention improves efficiency and solves material breakage problems, is suitable for various indoor and outdoor environments, occupies little space, and is easy to maintain.

Description

Technical Field

[0001] This invention relates to a grain logistics storage and conveying device, and more particularly to a modified multi-point unloader. Background Technology

[0002] The existing plow-type unloader has the advantages of being compact and space-saving, and is good at unloading corn without leakage. The plow blades are also wear-resistant. However, it cannot unload materials such as wheat, rice, and rapeseed. This is because rice wears down the plow blades very quickly, causing leakage and resulting in unhulled rice that is difficult to store and is carried to the head of the machine. Wheat also suffers from severe wear on the plow blades, causing leakage to the head of the machine. Rapeseed also suffers from severe wear on the plow blades, causing the rapeseed to be squeezed out and stick to the conveyor belt, which is difficult to clean and is carried to the head of the machine. Furthermore, the maintenance cost is high and it is unsafe because maintenance personnel have to enter the machine. The rubber covering on the conveyor belt is also punctured by the plow blades, causing serious leakage.

[0003] Advantages of the tilting parabolic multi-point unloading belt conveyor: Clean unloading prevents leakage and material cross-contamination. However, during unloading, the distance between the throwing roller and the fixed guide roller is too large, both front-to-back and vertically. This is because one end of the support frame has a fixed rotating shaft without a swing arm for adjustment. During unloading, the rotating frame can only rotate around the fixed rotating shaft. The large distance between the throwing roller and the guide roller increases the height of the casing, the belt running resistance, and the main motor power. The lifting mechanism between the support wheel and the return belt makes maintenance and repair inconvenient and poses safety hazards. The cost is higher than that of an overlapping belt conveyor, and this equipment is limited by space constraints. Summary of the Invention

[0004] To address the aforementioned existing technical problems, this invention provides a modified multi-point unloader that improves efficiency and reduces material breakage. It is suitable for various indoor and outdoor environments, occupies little space, and is easy to maintain.

[0005] To achieve the above objectives, the present invention provides a modified multi-point unloader, comprising a traveling beam, a belt, a first lifting roller, a second lifting roller, and a motor; the belt carries a deep groove idler, the first lifting roller, and the second lifting roller mounted on the traveling beam; the fixed end of the traveling beam is connected to the frame, and the vertically lifting end of the traveling beam is connected to a first lifting lug on a first sliding sleeve; the first lifting roller is fixed to the first sliding sleeve; the motor controls the raising or lowering of the first lifting roller via a lead screw; the second lifting roller is fixed to the second sliding sleeve, the upper end of the second sliding sleeve has a second lifting lug connecting to the lower end of a lifting linkage, the upper end of the lifting linkage is connected to one end of a thrust lever, and the other end of the thrust lever is connected to a rotating bearing; the thrust... An upward connecting rod is connected to one end of the lever near the first sliding sleeve. The upward connecting rod has a sliding groove, and the first sliding sleeve has a fixing pin that slides within the sliding groove. When the first lifting roller moves upward, the upper surface of the first sliding sleeve contacts the rotating bearing, driving the thrust lever to press down the lifting connecting rod, which in turn drives the second lifting roller downward, creating a height difference between the first and second lifting rollers. When the first lifting roller moves downward, the fixing pin on the first sliding sleeve moves down within the sliding groove of the upward connecting rod, pulling the upward connecting rod downward. This causes the thrust lever to press down, driving the lifting connecting rod upward. The second lifting roller is pulled along by the lifting connecting rod, restoring the height difference between the first and second lifting rollers.

[0006] The beneficial effects of adopting the above technical solution are as follows: the feeding method involves receiving upstream materials from the tail feeder and feeding them along the belt conveyor from the tail to the head. Adding multiple modified multi-point unloaders to all belt conveyors according to the user's needs effectively solves the problems of improving efficiency and preventing material breakage in grain conveying. The modified multi-point unloaders are suitable for various environments; their indoor and outdoor exposure ensures that they will not come into contact with rainwater or dust during unloading, preventing spillage and the carrying of dust or material to the head. The structure is simple and easy to operate; the transmission bearings are all outside the housing for easy lubrication and maintenance. Due to the adoption of a double-roller lifting structure, it occupies less space than comparable unloaders, and the absence of easily damaged parts reduces labor. For production capacities of 20-3000 tons per hour, the equipment height is 1000-1700 mm, and the minimum distance between modified multi-point unloaders of different production capacities can be 4-6 meters.

[0007] Furthermore, a limiting block is provided above the second sliding sleeve in this invention.

[0008] The beneficial effect of adopting the above technical solution is to prevent the second sliding sleeve from exceeding the limit position.

[0009] Furthermore, the first lifting roller is provided with a pair of first sliding sleeves, which are driven by a pair of first slide rails, a reducer and a lead screw respectively; the pair of first sliding sleeves are connected as a whole by a first cross brace to maintain concentricity; the second lifting roller is provided with a pair of second sliding sleeves, which are driven by a pair of second slide rails, a thrust lever, a lifting link and an upward link respectively; the pair of second sliding sleeves are connected as a whole by a second cross brace to maintain concentricity.

[0010] The beneficial effect of adopting the above technical solution is that it ensures that the symmetrical sliding sleeves can maintain synchronous movement.

[0011] Furthermore, a V-shaped material distribution accelerator is fixed on the second cross brace.

[0012] The beneficial effects of adopting the above technical solution are: when the material forms a fluid and encounters the sharp corner of the V-shaped material distributor accelerator, it separates and runs, and the material is thrown out by centrifugal force, which plays a role in rapid material distribution and accelerates the material's direction.

[0013] Furthermore, the present invention includes chutes installed on both sides of the V-shaped material distribution accelerator.

[0014] The beneficial effect of adopting the above technical solution is that it completes the feeding work on both sides.

[0015] Furthermore, in this invention, a scraper is installed in front of the V-shaped material distribution accelerator in the material infeed direction.

[0016] The beneficial effect of adopting the above technical solution is: cleaning the residue on the belt surface.

[0017] Furthermore, the fixed end of the strut is connected to a swing arm, one end of which is connected to the frame via a concentric shaft, and the other end is connected to the strut via a pin.

[0018] The beneficial effects of adopting the above technical solution are: it can adjust the belt climbing angle by moving the boom up and down and back and forth; when the modified multi-point unloader is working, the boom and swing arm can adjust the belt climbing angle by raising and lowering.

[0019] Furthermore, in this invention, the first lifting roller stops 15 mm below the non-working surface of the parallel material passage of the bearing belt, and the second lifting roller is positioned above the bearing belt, with the height of the roller surface above the working surface adjusted according to different production volumes.

[0020] The beneficial effects of adopting the above technical solution are: preventing the conveyor belt from touching the first lifting roller, and ensuring that the second lifting roller is installed above the parallel conveyor belt surface to ensure that the conveyor belt passes parallel to the material and the second lifting roller does not contact the material position. When it is lowered to the original position, the rotation of the transmission motor is controlled by the limit switch.

[0021] Furthermore, the V-shaped material distribution accelerator of the present invention is composed of two quarter circles forming a V shape, with a pointed front end and an arc-shaped rear end that opens outwards.

[0022] Furthermore, in this invention, the first lifting roller is installed between the carrying belt and the return belt. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the lifting mechanism of the first and second lifting rollers of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the upward connecting rod of the present invention;

[0026] Figure 4 This is a top view of the present invention;

[0027] Figure 5 This is a right view of the present invention;

[0028] Figure 6 This is a right-hand view of the lifting of the first and second lifting rollers of the present invention. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, a modified multi-point unloader of the present invention includes a traveling beam 4, a belt 28, a first lifting roller 13, a second lifting roller 16, and a motor 10; the belt carries a deep groove type idler roller, the first lifting roller 13, and the second lifting roller 16 mounted on the traveling beam 4; the fixed end of the traveling beam 4 is connected to the frame, and the vertical lifting end of the traveling beam 4 is connected to a first lifting lug 5 on a first sliding sleeve 6; the first lifting roller 13 is fixed on the first sliding sleeve 6; the motor 10 controls the first lifting roller 13 to rise or fall through a lead screw 24; the second lifting roller 16 is fixed on a second sliding sleeve 17, and the upper end of the second sliding sleeve 17 has a second lifting lug 20 connected to the lower end of a lifting connecting rod 30; the upper end of the lifting connecting rod 30 is connected to one end of a thrust lever 9, and the other end of the thrust lever 9 is connected to a rotating bearing 7; the upper end of the thrust lever 9 is near... One end of the first sliding sleeve 6 is connected to an upward connecting rod 22. The upward connecting rod 22 is provided with a sliding groove, and the first sliding sleeve 6 is provided with a fixing pin 31, which slides in the sliding groove. When the first lifting roller 13 moves upward, the upper end face of the first sliding sleeve 6 touches the rotating bearing 7, which drives the thrust lever 9 to press down the lifting connecting rod 30, thereby driving the second lifting roller 16 downward, so that the belt forms a height difference between the first lifting roller 13 and the second lifting roller 16. When the first lifting roller 13 moves downward, the fixing pin 31 on the first sliding sleeve 6 moves down in the sliding groove of the upward connecting rod 22, and moves down to the bottom of the sliding groove, which pulls the upward connecting rod 22 to move downward, driving the thrust lever 9 to press down and drive the lifting connecting rod 30 to move upward. The second lifting roller 16 is pulled and moved by the lifting connecting rod 30, so that the belt restores the height difference between the first lifting roller 13 and the second lifting roller 16. The second lifting roller 16 has a fixed pin 31 through a round hole at one end of the upward connecting rod 22, and a sliding groove at the other end. When the first lifting roller 13 rises, the fixed pin 31 on the first sliding sleeve 6 will not push the upward connecting rod 22 and will not be subjected to force.

[0031] Based on the lever principle, the second lifting roller 16 descends against the upper end face of the first sliding sleeve 6, pushing the thrust lever 9 and causing the lifting link 30 to move accordingly. The lever arm of the thrust lever 9 at the fulcrum fixed pin 29 is more than 3 times the fulcrum. The second lifting roller 16 rises against the fixed pin 31 on the first sliding sleeve 6, driving the upward link 22 to connect the thrust lever 9 and pull the lifting link 30 to move accordingly.

[0032] In this embodiment, the feeding method involves receiving upstream material from the tail feeder and feeding it along the belt conveyor from the tail to the head. Multiple modified multi-point unloaders are added to all belt conveyors according to the user's needs, effectively solving the problems of improving efficiency and preventing material breakage in grain conveying. These modified multi-point unloaders are suitable for various environments; their indoor and outdoor exposure ensures that they will not come into contact with rainwater or dust overflow during unloading, nor will they carry dust or material to the head. The structure is simple and easy to operate. The transmission bearings are all located outside the housing, facilitating lubrication and maintenance. Due to the adoption of a double-roller lifting structure, it occupies less space than comparable unloaders, and the absence of easily damaged parts reduces labor costs.

[0033] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 2 As shown, a limiting block 26 is provided above the second sliding sleeve 17 to prevent the second sliding sleeve from exceeding the limit position.

[0034] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 1 and Figure 4 As shown, the first lifting roller 13 is equipped with a pair of first sliding sleeves 6, which are driven by a pair of first slide rails 8, a reducer, and a lead screw 24, respectively; the pair of first sliding sleeves 6 are connected as one unit by a first cross brace 25 to maintain concentricity; the second lifting roller 16 is equipped with a pair of second sliding sleeves 17, which are driven by a pair of second slide rails 19, a thrust lever 9, a lifting connecting rod 30, and an upward connecting rod 22, respectively; the pair of second sliding sleeves 17 are connected as one unit by a second cross brace 18 to maintain concentricity. This ensures that the symmetrical sliding sleeves can maintain synchronous movement.

[0035] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 4 and Figure 5 As shown, a V-shaped material distribution accelerator 15 is fixed on the second cross brace 18. When the material forms a fluid, it is separated and runs when it encounters the sharp corner of the V-shaped material distribution accelerator. The material is thrown out by centrifugal force, which plays a role in quickly distributing the material and accelerating and guiding it.

[0036] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 6 As shown, chutes 27 are installed on both sides of the V-shaped material distribution accelerator 15 to complete the feeding work on both sides.

[0037] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 1 As shown, a scraper 21 is installed in front of the V-shaped material distribution accelerator 15 in the material infeed direction to clean the residue on the belt surface.

[0038] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 1 As shown, a swing arm 2 is connected to the fixed end of the traveling lever 4. One end of the swing arm 2 is connected to the frame via a concentric shaft 3, and the other end is connected to the traveling lever 4 via a pin 1. This serves to adjust the belt's incline angle by moving the traveling lever 4 up and down and back and forth. When the modified multi-point unloader is working, the traveling lever 4 and the swing arm 2 adjust the belt's incline angle by raising and lowering them.

[0039] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 1As shown, the first lifting roller 13 stops when it is ≥15 mm below the non-working surface of the belt parallel to the material flow. The second lifting roller 16 is positioned above the carrying belt, and the height of the roller surface from the working surface is adjusted according to different production volumes. To prevent the material conveying belt from touching the first lifting roller, the second lifting roller 16 is installed above the belt parallel to the material flow surface to ensure that the second lifting roller 16 does not contact the material during parallel material flow. The rotation of the transmission motor is controlled by a limit switch when the roller returns to its original position.

[0040] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 4 As shown, the V-shaped material distribution accelerator 15 has two quarter circles forming a V shape, with a pointed front end and an arc-shaped rear end that opens outwards.

[0041] In other specific embodiments of the present invention, the remainder is the same as the embodiments described above, except that, as follows: Figure 1 As shown, the first lifting roller 13 is installed between the carrying belt and the return belt.

[0042] In conjunction with the above embodiments, the working process of the present invention is as follows: When the modified multi-point unloader needs to receive materials, the motor 10 drives the reducer 11 and the lead screw 24 to rotate and rise, and the first lifting roller 13 moves upward. The upper end face of the first sliding sleeve 6 touches the rotating bearing 7, which drives the thrust lever 9 to press down the lifting linkage 30, thereby driving the second lifting roller 16 to move downward. When the first lifting roller 13 and the second lifting roller 16 reach the design position, they automatically stop. The belt with the height difference between the first lifting roller 13 and the second lifting roller 16 deforms tangentially. At this time, the surface of the belt 28 contacts the scraper 21. The principle of receiving materials is to throw the materials out by the inertia of the belt running. The materials form a fluid and encounter the sharp corner of the V-shaped material distributor accelerator 15 to separate and run. The materials are thrown out by centrifugal force, forming a material flow to the downstream side chute 27 to complete the feeding work. When head feeding is required or when switching to the next variant of the multi-point unloader, material needs to be unloaded. The first lifting roller 13 descends through the transmission mechanism of the motor 10, etc. The fixing pin 31 on the first sliding sleeve 6 moves down in the groove of the upward connecting rod 22. When it moves down to the bottom of the groove, it pulls the upward connecting rod 22 to move downward, which drives the thrust lever 9 to press down and drives the lifting connecting rod 30 to move upward. The second lifting roller 16 is pulled and follows by the lifting connecting rod 30. The first lifting roller 13 automatically stops when it is 15 mm lower than the non-working surface of the belt parallel material passage, ensuring that the first lifting roller 13 will not rub against the belt when parallel material passage, and the second lifting roller 16 will not touch the material. When it returns to its original position, the rotation of the transmission motor is controlled by the limit switch.

[0043] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent transformations or modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A modified multi-point unloader, characterized in that, It includes a guide rail (4), a belt (28), a first lifting roller (13), a second lifting roller (16), and a motor (10); The belt (28) is supported by a deep groove idler, a first lifting roller (13), and a second lifting roller (16) mounted on the guide rail (4); the fixed end of the guide rail (4) is connected to the frame, and the vertical lifting end of the guide rail (4) is connected to the first lifting lug (5) on the first sliding sleeve (6); the first lifting roller (13) is fixed on the first sliding sleeve (6); the motor (10) controls the first lifting roller (13) to rise or fall through the lead screw (24); the second lifting roller (16) is fixed on the second... On the sliding sleeve (17), the upper end of the second sliding sleeve (17) has a second lifting lug (20) connected to the lower end of the lifting link (30). The upper end of the lifting link (30) is connected to one end of the thrust lever (9). The other end of the thrust lever (9) is connected to a rotating bearing (7). The end of the thrust lever (9) near the first sliding sleeve (6) is connected to an upward link (22). The upward link (22) is provided with a sliding groove. The first sliding sleeve (6) is provided with a fixing pin (31). The fixing pin (31) slides in the sliding groove. As the first lifting roller (13) moves upward, the upper end of the first sliding sleeve (6) touches the rotating bearing (7), driving the thrust lever (9) to press down the lifting link (30), which in turn drives the second lifting roller (16) downward, creating a height difference between the belt and the first lifting roller (13) and the second lifting roller (16). As the first lifting roller (13) moves downward, the fixing pin (31) on the first sliding sleeve (6) moves down in the groove of the upward link (22), and moves down to the bottom of the groove, pulling the upward link (22) downward, which in turn drives the thrust lever (9) to press down and drives the lifting link (30) upward. The second lifting roller (16) is pulled and follows the lifting link (30), restoring the height difference between the first lifting roller (13) and the second lifting roller (16).

2. A modified multi-point unloader according to claim 1, characterized in that, A limiting block (26) is provided above the second sliding sleeve (17).

3. A modified multi-point unloader according to claim 1 or 2, characterized in that, The first lifting roller (13) is provided with a pair of first sliding sleeves (6), which are driven by a pair of first slide rails (8), a reducer and a lead screw (24); the pair of first sliding sleeves (6) are connected as one unit by a first cross brace (25) to maintain concentricity; the second lifting roller (16) is provided with a pair of second sliding sleeves (17), which are driven by a pair of second slide rails (19), a thrust lever (9), a lifting link (30) and an upward link (22); the pair of second sliding sleeves (17) are connected as one unit by a second cross brace (18) to maintain concentricity.

4. A modified multi-point unloader according to claim 3, characterized in that, The second cross brace (18) is fixed with a V-shaped material distribution accelerator (15) and a second lifting roller (16) that move up and down.

5. A modified multi-point unloader according to claim 4, characterized in that, The V-shaped material distribution accelerator (15) has chutes (27) installed on both sides.

6. A modified multi-point unloader according to claim 4, characterized in that, The V-shaped material distribution accelerator (15) is equipped with a cleaning belt scraper (21) in front of the material in the material inlet direction.

7. A modified multi-point unloader according to claim 1 or 2, characterized in that, The fixed end of the strut (4) is connected to a swing arm (2). One end of the swing arm (2) is connected to the frame via a concentric shaft (3), and the other end is connected to the strut (4) via a pin (1).

8. A modified multi-point unloader according to claim 1, characterized in that, The first lifting roller (13) stops 15 mm below the non-working surface of the parallel material passage of the bearing belt, and the second lifting roller (16) is above the bearing belt and the height of the roller surface from the working surface is adjusted according to different outputs.

9. A modified multi-point unloader according to claim 4, characterized in that, The V-shaped material distribution accelerator (15) has two quarter circles forming a V shape, with a pointed front end and an arc-shaped rear end that opens outwards.

10. A modified multi-point unloader according to claim 1, characterized in that, The first lifting roller (13) is installed between the carrying belt and the return belt.

Images