Material elevator

Abstract

The utility model relates to a material elevator which comprises a rack, a carrying platform, a transmission shaft and a driving motor, and a first transmission wheel set is composed of a first transmission chain wheel and a first guide chain wheel; a first transmission chain is installed on the first transmission wheel set, a second transmission chain is installed on the second transmission wheel set, the first transmission chain and the second transmission chain are the same in length and move synchronously, downlink sections of the first transmission chain and the second transmission chain are arranged close to each other, and uplink sections of the first transmission chain and the second transmission chain are arranged away from each other. The carrying platform is a flexible plate strip and can be folded in the length direction, the carrying platform is of a rigid supporting structure in the width direction, the front end of the carrying platform is fixedly connected with the first transmission chain, the rear end of the carrying platform is fixedly connected with the second transmission chain, and the distance between the first transmission chain and the ascending section of the second transmission chain is equal to the length of the carrying platform. The scheme realizes continuous production and is high in working efficiency; and the space occupied by the elevator is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of material hoisting machines. Background Technology

[0002] With economic development, large warehouses are increasingly using automated equipment to handle the movement of materials. For example, bagged granular or powder products are often moved and stacked onto transport vehicles by loading machines.

[0003] Due to the difference in ground height and loading machine height, existing loading machines typically use inclined conveyor belts to lift materials. Materials are supplied by raising the height of the conveyor belt head. The loading machine uses an automated robotic arm to grab the packaging bags and then places them in predetermined positions according to their sequence. This type of conveyor belt often requires a large lateral length, occupying a significant amount of space during loading operations.

[0004] For material lifting, existing technologies also include elevators, which are also used for material lifting. For example, one type of elevator includes a base, on which a transport platform is set. A moving module is installed on the side of the transport platform. The moving module can be a shear brace, a ball screw, or a gear and rack assembly. This type of elevator is small in size and easy to move, but it cannot automatically deliver materials. The packaging bags lifted by it need to be manually removed from the transport platform. It cannot lift too much material at a time, and it is necessary to wait for the transport platform to descend empty before it can be reloaded. This does not achieve the purpose of saving manpower, and the handling efficiency is low.

[0005] Example 2 is a bucket elevator for mining, see Chinese patent, application number 202421257440.0, application date June 4, 2024, publication number CN222373614U. It uses a bottom plate and side support plates as a support frame, and sets a circulating chain on both sides of the frame. Several circulating buckets for loading materials are installed between the two chains. This scheme drives several loading buckets to move continuously through the circulating transmission of the chains, so as to achieve the effect of continuously lifting materials. However, existing bucket elevators are generally large in size and are often used to lift bulk materials. They unload materials by tilting, which can easily cause damage to the packaging bags when used for handling packaged bags. Utility Model Content

[0006] To solve the aforementioned technical problem, this utility model provides a packaging bag lifting machine that can quickly and safely lift packaging bags from the warehouse floor to the height required by the palletizer.

[0007] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0008] A material hoist includes a frame, a conveying platform for carrying materials installed within the frame, a drive shaft, and a drive motor.

[0009] The first transmission wheel assembly consists of a first transmission sprocket and a first guide sprocket.

[0010] The second transmission wheel assembly consists of a second transmission sprocket and a second guide sprocket.

[0011] The first and second drive sprockets are mounted on the drive shaft end, and the first and second guide sprockets are mounted on the frame.

[0012] A first transmission chain is installed on a first transmission wheel assembly, and a second transmission chain is installed on a second transmission wheel assembly. The first transmission chain and the second transmission chain are of the same length and move synchronously. The downward sections of the first transmission chain and the second transmission chain are set close to each other, and the upward sections of the first transmission chain and the second transmission chain are set far apart.

[0013] The transport platform is a flexible strip that can be folded along its length and has a rigid support structure along its width. Its front end is fixedly connected to the first transmission chain, and its rear end is fixedly connected to the second transmission chain. The distance between the upper sections of the first and second transmission chains is equal to the length of the transport platform.

[0014] Compared with the prior art, the advantages of this utility model with the above structure are:

[0015] 1) This solution utilizes a chain conveyor platform for material lifting, saving manpower and enabling continuous production with high efficiency; 2) By utilizing the difference in the trajectories of the two chains, the platform circulates in different postures within the frame, moving in a planar state when going up and in a vertical state when going down, greatly saving the space occupied by the lifting machine; 3) This solution features a flexible carrying platform that can carry packages, bags, and boxes, and can also deform within the equipment when not carrying anything. When multiple platforms are circulating on the chain simultaneously, the platforms do not affect each other's movement, resulting in better equipment stability.

[0016] As a preferred option, a further technical solution to the above structure is:

[0017] Both the first and second transmission chains have support rods on the sides of their upward sections. Both support rods are fixed to the frame and are parallel to each other, and are set along the entire length of the upward section.

[0018] The beneficial effects obtained from the above features are: the support rod is used to constrain the distance between the two chains, so as to avoid the flexible platform from pulling and deforming the chains on both sides when the load is heavy.

[0019] The transmission shaft has a first transmission sprocket installed on the inner side of its shaft end and a second transmission sprocket installed on the outer side. The transmission shaft consists of three parts: an upper shaft body, a rear shaft body, and a front shaft body. The upper shaft body is installed on the upper rear side of the frame, the rear shaft body is installed on the lower rear side of the frame, and the front shaft body is installed on the lower front side of the frame. The first guide sprocket is located next to the rear shaft body and is positioned outside the first transmission chain. The second guide sprocket consists of an upper guide wheel and a lower guide wheel. The upper guide wheel is positioned on the upper front side of the frame and at the same height as the upper shaft body. The lower guide wheel is positioned below the upper guide wheel and close to the front shaft body, and is positioned outside the second transmission chain.

[0020] The beneficial effects obtained from the above features are: this example saves on the number of sprockets, has a large length in both the up and down sections, and has high material carrying efficiency.

[0021] The transport platform consists of several single rods, the ends of which are connected in series by steel wire ropes, and a threaded spring fitted on the steel wire rope is installed between adjacent single rods.

[0022] The beneficial effects obtained from the above features are: the transport platform in this example has a low cost, can support packages and boxes, and can also adapt to the movement of the chain.

[0023] The first connecting blocks are installed on both sides of the front end of the transport platform, and the second connecting blocks are installed on both sides of the rear end.

[0024] The first connecting block includes a rectangular connector with at least one pin hole on its outer surface and a through hole on its upper surface, into which a locking pin is installed. A connecting shaft of a certain link on the first transmission chain is extended, with its outer end forming a connecting pin. The end of the connecting pin has a locking hole. The outer end of the connecting pin is inserted into the pin hole, and the pin locks through the locking holes of each connecting pin. The structure on the second transmission chain for connecting to the second connecting block is the same as that on the first transmission chain. The second connecting block includes a rectangular connector with an L-shaped support plate fixed to its outer surface. The outer end of the L-shaped support plate has a pin hole. The end of the connecting pin extends to the other side of the L-shaped support plate, and the locking pin passes through the locking hole of the connecting pin.

[0025] The beneficial effects obtained from the above features are: the connection between the transport platform and the chain in this embodiment is easy to control, the connection node does not affect the meshing of the sprocket and chain, and ensures the stability of the equipment. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the first transmission chain of this utility model;

[0028] Figure 3 This is a schematic diagram of the second transmission chain of this utility model;

[0029] Figure 4 Schematic diagram of the distribution of the transmission chain and transmission wheel assembly;

[0030] Figure 5 This is a diagram of the drive shaft end mounting structure of this utility model;

[0031] Figure 6 This is a diagram of the guide sprocket installation structure;

[0032] Figure 7 This is a diagram of the support rod fixing structure;

[0033] Figure 8 This is a structural diagram of an embodiment of the transport platform;

[0034] Figure 9 This is a diagram illustrating an embodiment of the connection structure between the front end of the transport platform and the first transmission chain;

[0035] Figure 10 This is a diagram illustrating an embodiment of the connection structure between the rear end of the transport platform and the second transmission chain;

[0036] Figure 11 This is an exploded view of the connecting block structure.

[0037] In the diagram: 1. Frame; 2. Drive motor; 3. Drive shaft; 301. Upper shaft; 302. Rear shaft; 303. Front shaft; 4. Transport platform; 401. Single rod; 402. Steel wire rope; 403. Threaded spring; 404. Connecting shaft; 5. First drive chain; 501. First drive sprocket; 502. First guide sprocket; 6. Second drive chain; 601. Second drive sprocket; 602. Second guide sprocket; 6021. Upper guide wheel; 6022. Lower guide wheel; 7. Support rod; 8. First connecting block; 9. Second connecting block; 10. Rectangular connector; 11. Through hole; 12. Locking pin; 13. L-shaped support plate; 14. Connecting pin; 15. Groove; 16. Pin hole; 17. Locking hole; 18. Bearing. Detailed Implementation

[0038] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0039] This device is suitable for material bags weighing 20KG-50KG, specifically granular or powdery materials carried in woven bags, kraft paper bags, or woven laminated bags.

[0040] See Figures 1 to 4The material hoist provided by this utility model is particularly suitable for lifting and transporting materials such as packaging bags, boxes, and parcels. Its specific structure includes a frame 1, a transport platform 4 for carrying materials installed inside the frame 1, a drive shaft 3, and a drive motor 2. It also includes:

[0041] The first transmission wheel assembly consists of a first transmission sprocket 501 and a first guide sprocket 502;

[0042] The second transmission wheel assembly consists of a second transmission sprocket 601 and a second guide sprocket 602;

[0043] The first transmission sprocket 501 and the second transmission sprocket 601 are mounted on the shaft end of the transmission shaft 3, and the first guide sprocket 502 and the second guide sprocket 602 are mounted on the frame 1;

[0044] A first transmission chain 5 is installed on the first transmission wheel set, and a second transmission chain 6 is installed on the second transmission wheel set. The first transmission chain 5 and the second transmission chain 6 are of the same length and move synchronously. The downward sections of the first transmission chain 5 and the second transmission chain 6 are set close to each other, and the upward sections of the first transmission chain 5 and the second transmission chain 6 are set far apart.

[0045] The transport platform 4 is a flexible strip that can be folded along its length and has a rigid support structure along its width. Its front end is fixedly connected to the first transmission chain 5 and its rear end is fixedly connected to the second transmission chain 6. The distance between the upper sections of the first transmission chain 5 and the second transmission chain 6 is equal to the length of the transport platform 4.

[0046] Preferred, see Figure 1 , Figure 4 and Figure 7 Both the first drive chain 5 and the second drive chain 6 have support rods 7 on their upper sections. Both support rods 7 are fixed to the frame 1, are parallel to each other, and are installed along the entire length of the upper section. The support rods 7 are used to constrain the distance between the two chains, preventing the flexible platform from pulling and deforming the chains on both sides when the load is heavy. The support rods 7 can be thin steel strips fitted into the middle of the chains, or C-shaped steel clipped onto the outside of the chains. The structure of the support rods 7 needs to prevent the chains from shifting towards the center while also avoiding obstructing the movement of the transport platform 4 or the connecting blocks.

[0047] Optional, see Figures 4 to 6The transmission shaft 3 has a first transmission sprocket 501 installed on the inner side of its shaft end and a second transmission sprocket 601 installed on the outer side. The transmission shaft 3 is divided into three parts: an upper shaft body 301, a rear shaft body 302, and a front shaft body 303. The upper shaft body 301 is installed on the upper rear side of the frame 1, the rear shaft body 302 is installed on the lower rear side of the frame 1, and the front shaft body 303 is installed on the lower front side of the frame 1. The first guide sprocket 502 is located next to the rear shaft body 302 and is positioned outside the first transmission chain 5. The second guide sprocket 602 is divided into two parts: an upper guide wheel 6021 and a lower guide wheel 6022. The upper guide wheel 6021 is positioned on the upper front side of the frame 1 at the same height as the upper shaft body 301, and the lower guide wheel 6022 is positioned below the upper guide wheel 6021 and close to the front shaft body 303. The lower guide wheel 6022 is positioned outside the second transmission chain 6.

[0048] Three first drive sprockets 501 and one first guide sprocket 502 work together to constrain the first drive chain 5 into an L-shape, and three second drive sprockets 601 and two second guide sprockets 602 constrain the second drive chain 6 into a Q-shape. The first drive chain 5 and the second drive chain 6 have the same height and width, so that the two ends of the transport platform 4 rise parallel and synchronously in the upward section. After reaching the top, the front end of the transport platform 4 approaches the upper shaft 301 and turns downward first. The rear end of the transport platform 4 enters the downward section with the second drive chain 6. During the process of the transport platform 4 turning from horizontal to vertical downward, it uses inertia to throw the packaging bag onto the transport platform behind the frame 1. When the transport platform 4 moves to the bottom of the frame 1, the front end still turns first. When the front end runs to the bottom of the upward end of the first drive chain 5, due to the fixed spacing setting, the rear end runs to the lower end of the upward section of the second drive chain 6 at the same time, thus starting the second cycle. At least one of the upper shaft 301, rear shaft 302, and front shaft 303 is connected to the drive motor 2. (This utility model includes an appendix.) Figure 1 The embodiment shown has a drive motor 2 configured on the lower front side of the frame 1 for the front axle 303.

[0049] The above example of chain shape setting features a simple chain shape, which saves on the number of sprockets. The long lengths of the upper and lower sections allow for a greater number of horizontally ascending transport platforms 4 in the upper section, resulting in high material transport efficiency.

[0050] As an alternative, see Figure 1 , Figure 8 The transport platform 4 is composed of several single rods 401. The ends of each single rod 401 are connected in series by steel wire ropes 402. A threaded spring 403 fitted on the steel wire rope 402 is provided between adjacent single rods 401.

[0051] The single rod 401 can be a steel pipe, steel bar, or PVC pipe. The transport platform 4 in this example is low-cost, capable of supporting packages and boxes, and adapting to the movement of the chain. It can also be a chain consisting of multiple pin-connected plates, or a nylon fabric belt with embedded support rods 7, etc.

[0052] As an alternative, see Figures 9 to 11 The front two sides of the transport platform 4 are equipped with first connecting blocks 8, and the rear two sides are equipped with second connecting blocks 9. Specifically, the first connecting block 8 includes a rectangular connector 10. The outer surface of the rectangular connector 10 is provided with at least one pin hole 16, and the upper surface is provided with a through hole 11 that passes through the pin hole 16. A locking pin 12 is installed in the through hole 11. The connecting shaft of a certain chain block on the first transmission chain 5 is extended, and the outer end forms a connecting pin 14. The end of the connecting pin 14 is provided with a locking hole 17. The outer end of the connecting pin 14 is inserted into the pin hole 16, and the locking pin 12 passes through the locking hole 17 of each connecting pin 14.

[0053] The structure on the second transmission chain 6 for connecting with the second connecting block 9 is the same as that on the first transmission chain 5; the second connecting block 9 includes a rectangular connector 10, an L-shaped support plate 13 is fixed to the outer surface of the rectangular connector 10, and a pin hole 16 is provided at the outer end of the L-shaped support plate 13; the end of the connecting pin 14 passes through to the other side of the L-shaped support plate 13, and the locking pin 12 passes through the locking hole 12 of the connecting pin 14.

[0054] Two single rods 401 located at the ends of the transport platform are fixedly connected to shafts 404. Bearings 18 are installed on the connecting shafts 404 and are mounted inside the inner surface of the rectangular connector 10. To facilitate the installation of the bearings 18, grooves 15 can be pre-fabricated on the inner surface of the rectangular connector 10 to embed the bearings 18. In this embodiment, the connection between the transport platform 4 and the chain is easy to control, and the connection node does not affect the engagement of the sprocket and chain, ensuring the stability of the equipment.

[0055] The beneficial effects of this utility model are:

[0056] 1) This solution utilizes two sets of chains to carry the front and rear ends of the transport platform in a circular motion within the equipment, continuously lifting materials, saving manpower, achieving continuous production, and resulting in high work efficiency;

[0057] 2) By utilizing the difference in the trajectories of the two chains, the platform moves in different postures within the frame, especially when descending, it is in a vertical state. When multiple platforms are circulating on the chain at the same time, the platforms do not affect each other's movement, which greatly saves the space occupied by the hoist.

[0058] 3) This solution is designed with a flexible load-bearing platform, which can carry packages, bags, and boxes, and can also deform within the equipment when not in use, resulting in better equipment stability.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A material hoist, comprising a frame (1), a conveying platform (4) for carrying materials installed within the frame (1), a drive shaft (3), and a drive motor (2), characterized in that, Also includes: The first transmission wheel assembly consists of a first transmission sprocket (501) and a first guide sprocket (502); The second transmission wheel assembly consists of a second transmission sprocket (601) and a second guide sprocket (602); The first drive sprocket (501) and the second drive sprocket (601) are mounted on the shaft end of the drive shaft (3), and the first guide sprocket (502) and the second guide sprocket (602) are mounted on the frame (1); A first transmission chain (5) is installed on the first transmission wheel set, and a second transmission chain (6) is installed on the second transmission wheel set. The first transmission chain (5) and the second transmission chain (6) are of the same length and move synchronously. The downward sections of the first transmission chain (5) and the second transmission chain (6) are set close to each other, and the upward sections of the first transmission chain (5) and the second transmission chain (6) are set far apart. The transport platform (4) is a flexible strip that can be folded in the longitudinal direction and has a rigid support structure in the width direction. Its front end is fixedly connected to the first transmission chain (5) and its rear end is fixedly connected to the second transmission chain (6). The distance between the upper sections of the first transmission chain (5) and the second transmission chain (6) is equal to the length of the transport platform (4).

2. The material hoist according to claim 1, characterized in that: The first transmission chain (5) and the second transmission chain (6) are both provided with support rods (7) on the side of the upward section. Both support rods (7) are fixed to the frame (1). The two support rods (7) are parallel and are set along the entire length of the upward section.

3. The material hoist according to claim 1, characterized in that: The first drive sprocket (501) is installed on the inner side of the shaft end of the drive shaft (3), and the second drive sprocket (601) is installed on the outer side; the drive shaft (3) is divided into three parts: the upper shaft body (301), the rear shaft body (302), and the front shaft body (303). The upper shaft body (301) is installed on the upper rear side of the frame (1), the rear shaft body (302) is installed on the lower rear side of the frame (1), and the front shaft body (303) is installed on the lower front side of the frame (1); the first guide sprocket (502) is located at the rear The shaft (302) is located next to and outside the first transmission chain (5); the second guide sprocket (602) is divided into an upper guide wheel (6021) and a lower guide wheel (6022). The upper guide wheel (6021) is located on the upper front side of the frame (1) and at the same height as the upper shaft (301). The lower guide wheel (6022) is located below the upper guide wheel (6021) and close to the front shaft (303). The lower guide wheel (6022) is located outside the second transmission chain (6).

4. The material hoist according to claim 1, characterized in that: The transport platform (4) consists of several single rods (401), and the ends of each single rod (401) are connected in series by steel wire ropes (402). A threaded spring (403) fitted on the steel wire rope (402) is provided between adjacent single rods (401).

5. The material hoist according to claim 4, characterized in that: The first connecting blocks (8) are installed on both sides of the front end of the transport platform (4), and the second connecting blocks (9) are installed on both sides of the rear end.

6. The material hoist according to claim 5, characterized in that: The first connecting block (8) includes a rectangular connector (10). The outer surface of the rectangular connector (10) is provided with at least one pin hole (16), and the upper surface is provided with a through hole (11) that passes through the pin hole (16). A locking pin (12) is installed in the through hole (11). The connecting shaft of a certain chain block on the first transmission chain (5) is extended, and the outer end forms a connecting pin (14). The end of the connecting pin (14) is provided with a locking hole (17). The outer end of the connecting pin (14) is inserted into the pin hole (16), and the locking pin (12) passes through the locking hole (17) of each connecting pin (14). The structure on the second transmission chain (6) for connecting with the second connecting block (9) is the same as that on the first transmission chain (5); the second connecting block (9) includes a rectangular connector (10), an L-shaped support plate (13) is fixed to the outer surface of the rectangular connector (10), and a pin hole (16) is provided at the outer end of the L-shaped support plate (13); the end of the connecting pin (14) passes through to the other side of the L-shaped support plate (13), and the locking pin (12) passes through the locking hole (17) of the connecting pin (14).

7. The material hoist according to claim 4, characterized in that: The poles are made of steel pipes, steel bars, or PVC pipes.

8. The material hoist according to claim 6, characterized in that: Two single rods (401) located at the head and tail of the transport platform are fixedly connected to shafts (404). Bearings (18) are installed on the connecting shafts (404). The bearings (18) are installed inside the inner surface of the rectangular connector (10).

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