A vertical elevator that is easy to load and unload materials

Abstract

A vertical elevator with "easy loading and easy unloading" according to the present invention has two pairs of groove-shaped tracks in two spaces within a steel structure framework. One pair is used for the vertical lifting of the hopper, and the other pair is used for the attitude maintenance and tipping unloading of the hopper. The hopper runs in each space in the form of a hopper assembly, and the hopper assembly includes a hopper, an extension section, a towing rod, a wheel axle, and wheels. The side of the hopper is fan-shaped, and there is a set of wheels along the lower edge of its tipping side opening. When the wheels enter the turning section of the track, tipping occurs. The two sets of hopper assemblies are connected by a wire rope group and reciprocate up and down by relying on a driving mechanism arranged on the top platform of the framework. To prevent the wire ropes from becoming slack due to the weight reduction during and after the hopper tipping, which may even affect the normal start of the other hopper, a counterweight mechanism is additionally provided in the upper part of each space within the framework. The counterweight mechanism is suspended by a wire rope and its position is limited by a weight. When the hopper assembly rises to the tipping position, the counterweight mechanism applies a counterweight.

Description

Technical Field

[0001] The present invention relates to the field of vertical hoists, and is mainly a double-bucket reciprocating vertical hoist that can be used for the "short-process blast furnace" in "A short-process blast furnace ironmaking process" and is easy to load and unload and is pulled by steel wire ropes. Background Art

[0002] Since when applying for the patent for "A Short-Process Blast Furnace Ironmaking Process" (patent number 201911373075.3), it was only proposed that after the existing blast furnace was heightened and modified, on the basis of making full use of the original blast furnace feeding system, a vertical hoist was added to transport the charge required for the heightened and modified blast furnace, that is, the short-process blast furnace, to the height required for charging the blast furnace; although the application document stated that a vertical hoist was used, it did not specify what kind of vertical hoist was to be used; in order to enable the "Short-Process Blast Furnace Ironmaking Process" to be recognized by relevant parties as soon as possible, in order to enable the project In order to ensure that the project can be truly implemented and to further increase its operability, an in-depth study was conducted on the vertical hoist used in the project. The study found that when the original blast furnace itself uses a charge car for loading, the charge car loading method can be considered to continue, but the inclined bridge must be raised and the winch drum must be lengthened or thickened, and even the reducer and its motor must be replaced in order to improve the driving capacity and transport the charge used in the blast furnace to the required height after the transformation. If the original charge car loading system cannot be transformed, it is necessary to consider adding a vertical hoist behind the existing lifting height in order to continue to increase its lifting height. If the original blast furnace uses belt loading, then it would not be inappropriate to directly change it to material cart loading, because the blast furnace material trough of any blast furnace that uses belt loading is relatively far away from the blast furnace body. If the belt corridor is lengthened and heightened to be transformed into an inclined bridge capable of running material carts, it would not be worthwhile; if the original belt is still used to transport the charge to the original height position, and then a vertical hoist is added to this position, this problem can be well solved; from the above description, it can be seen that the final destination of the above two utilization schemes is concentrated on the vertical hoist, and the selection of the vertical hoist has become the focus of research.

[0003] Considering that the above two utilization schemes ultimately boil down to the vertical elevator, it is necessary to analyze and study the existing vertical elevator. First, let's talk about the bucket-type or tipping-type vertical elevator connected by a chain, or the bucket-type or tipping-type vertical elevator connected by a belt. Both of these elevators belong to the multi-bucket or chain-bucket structure. Therefore, the higher the lifting height, the more material carried in the bucket, and the easier it is to cause excessive load on one side and insufficient load on the other side. If it is connected by a chain, it is easy to cause excessive wear of the upper sprocket. If it is connected by a belt, it is easy to cause slippage and increased wear of the upper belt drum. Moreover, there is also the problem that the chain and the belt become longer with use, and even the chain or the belt may be broken. Although both of these vertical elevators are equipped with tensioning devices, it is understood that there are certain unreliable factors in the tensioning devices of these two vertical elevators at present. In addition, the lifting height of these two vertical elevators is also limited. If the furnace charge needs to be lifted to a height of 100 meters (i.e., the height required for the short-process blast furnace in the end), it is definitely not suitable. And the failure rate of this type of elevator is relatively high and the maintenance difficulty is also relatively large. If it is used in a higher environment, the overhaul and maintenance difficulty will be even greater. Although the ore powder used in the short-process blast furnace is dry, loose small particles, the blast furnace production is highly continuous, and generally, the problem of unable to feed materials is not allowed to occur. Therefore, the above-mentioned type of vertical elevator is not suitable for use in the short-process blast furnace. If a mine-use vertical elevator is adopted, although it is feasible, it cannot be used directly. It not only requires building a steel structure frame, laying tracks, and solving the problems of how to load and unload materials, but also requires developing some related equipment again.

[0004] In view of the above problems, it is very necessary to specifically research and develop a vertical elevator that is suitable for use in a short-process blast furnace and is easy to load and unload materials. Therefore, the present invention specifically researches and develops a double-hopper reciprocating vertical elevator driven by a steel wire rope that is easy to load and unload materials, so as to meet the requirements of the short-process blast furnace in "A Short-Process Blast Furnace Ironmaking Process". And this vertical elevator can also be used in other places or furnaces that need to convey bulk materials to a relatively high height. Summary of the Invention

[0005] The object and technical task of the present invention are mainly to provide a double-hopper reciprocating vertical elevator driven by a steel wire rope that is easy to load and unload materials for the short-process blast furnace required in "A Short-Process Blast Furnace Ironmaking Process". This vertical elevator can also be used in other environments that require vertical feeding.

[0006] A double-hopper reciprocating vertical elevator with easy loading and unloading and driven by wire ropes developed to achieve the above purposes: It has a steel structure frame, which is divided into two spaces inside the frame. Each space is equipped with a feeding hopper. The hopper runs along the groove-shaped tracks on both sides of its respective space by relying on wheels. There are two groove-shaped tracks on each side inside each space. A pair of tracks arranged relatively in the middle are used for the vertical lifting of the hopper, and a pair of tracks arranged on the side closer to the discharging side are used to maintain the attitude of the hopper and for discharging. The driving mechanism of the hopper is arranged on the platform at the top of the frame. The operation mode of the double hoppers is that when the loaded hopper (referring to the hopper that has been loaded with materials) runs upward, its empty hopper descends as a counterweight, and so on in a cycle. The side shape of the hopper is fan-shaped, and its flaring angle is between 60° and 90°. There is a fan-handle-like extended section at the lower part of the hopper. The upper part of the extended section is fixedly connected to the bottom of the hopper, and the lower part is installed and connected to the lower wheel shaft. It is equivalent to the hopper sitting on the lower wheel shaft through its extended section, and the lower wheel shaft bears all the weight of the hopper and the furnace charge. Wheels are installed at both ends of the lower wheel shaft, and the wheels run in the groove-shaped tracks for the vertical lifting of the hopper. The lower wheel shaft is connected to the upper wheel shaft through a traction rod. Wheels are also installed at both ends of the upper wheel shaft, and the wheels also run in the groove-shaped tracks for the vertical lifting of the hopper. The traction rod is in two pieces, which are respectively arranged on both sides of the hopper. The length of the traction rod exceeds the height of the hopper plus the height of the extended section. There are holes at both ends of the traction rod. The upper hole is installed on the upper wheel shaft, and the lower hole is installed on the lower wheel shaft. A wire rope connector is also installed at the middle position above the upper wheel shaft, and the wire rope connector is used to connect the wire rope group. The wire rope group is composed of multiple wire ropes to facilitate increasing its friction and bearing capacity. The wire rope passes through a guiding pulley installed at the top of the steel structure frame, then through a driving wheel, and then through another guiding pulley, and is connected to another hopper assembly (including all components capable of carrying the hopper, such as the hopper body, extended section, upper and lower wheel shafts, and the wheel shaft and wheels for maintaining the attitude of the hopper and for discharging, as well as the traction rod and wire rope connector). The wheel shaft for maintaining the attitude of the hopper and for discharging is installed at the lower part of the discharging side of the hopper. Wheels are also installed at both ends of the wheel shaft, and the wheels run in the groove-shaped tracks for maintaining the attitude of the hopper. The track has a turning section for discharging at the upper part. Considering that the wire rope for lifting the hopper assembly will become slack due to the reduction of its traction weight when the hopper is discharging, which may even affect the normal start and lifting of the other hopper, a counterweight mechanism is added at the upper part of the groove-shaped track for the vertical lifting of the hopper. By using this counterweight mechanism, it can effectively prevent the problem that the other hopper is affected during the discharging process and after the discharging is completed due to the reduction of the traction weight. The counterweight mechanism is also equipped with two sets of wheel shafts and wheels. The wheel shaft is a short shaft with a break in the middle. The short shaft is installed and fixed at both ends of a frame with a square shape in a top view. Wheels are installed at the ends of each short shaft, and the wheels run in the groove-shaped tracks for the vertical lifting of the hopper.Its counterweight is installed between two sets of upper and lower frame structures in a shape of a square with a short axis and wheels in a top view, and the total weight of the counterweight is equivalent to the weight of the hopper assembly; the steel wire rope for towing the hopper assembly passes through the center of the frame structure in a shape of a square in a top view; a receiving fork is further installed downward below the lower frame structure in a shape of a square of the counterweight mechanism, and the downward fork of the receiving fork forks on the upper wheel shaft of the hopper assembly, so that the weight of the counterweight mechanism can be transmitted to the hopper assembly that is ascending and reaching the dumping position (i.e., the position where the counterweight mechanism is located); a connecting piece is further installed on the upper surface of the upper frame of the square of the counterweight mechanism, and the connecting piece is used to connect the steel wire rope for suspending the counterweight mechanism. One end of the steel wire rope is connected to the above-mentioned connecting piece, which is equivalent to being connected to the counterweight mechanism, and the other end is connected to a weight. The weight passes through the steel wire rope, passes through the top platform, and is suspended outside the frame through a pulley assembly; the weight is limited by a limiting piece welded on the lower edge of the lower part of the top platform; the function of the weight is, firstly, to prevent the steel wire rope from loosening, and secondly, to position the suspension position of the counterweight mechanism; the suspension position of the counterweight mechanism is determined by the length of the steel wire rope.

[0007] The outstanding advantages and beneficial effects of the present invention are as follows: 1. Since it can make full use of the original charging system of the blast furnace and is installed behind it for further height improvement, it can also be used in newly designed and constructed short-process blast furnaces, enabling the use of this elevator from the very beginning of the design. It can also be used in other environments that require vertical feeding; 2. Since the side of the hopper of this elevator is in a flared fan shape and an extension section is provided below it, it is easy to load and unload materials; 3. Since each hopper system of this elevator uses two sets of grooved tracks, one for the vertical lifting of the hopper and the other for maintaining the hopper posture and for unloading, its lifting trajectory is stable, the friction is very small, and it is easy to control; 4. To prevent the hopper from causing the steel wire rope to slack due to too fast or too violent speed during unloading, and even affecting the start of another hopper, a counterweight mechanism is provided at the upper part of the grooved track for the vertical lifting of the hopper. By using this counterweight mechanism, the weight can be effectively and timely applied to the hopper assembly. Therefore, it can effectively avoid the problems of the steel wire rope slacking or affecting the normal start and operation of the hopper on the other side due to excessive weight reduction during and after the unloading process of the hopper; 5. The wheels used in this elevator, including the wheels of the counterweight mechanism, are designed with the same specifications. Therefore, it can effectively reduce the spare part specifications and the reserve quantity; 6. Since the main body part of this vertical elevator, that is, the hopper assembly, can always remain within the grooved track for the vertical lifting of the hopper during the operation process, as well as during the loading and unloading processes, and with the timely addition of counterweight, its entire operating environment is very stable; 7. Since this elevator can operate in a relatively stable environment, its drive mechanism and control mechanism can fully adopt the drive mechanism and system technology of today's very mature vertical lifting elevators. This can not only reduce the R & D difficulty but also increase its reliability; 8. Since the outside of the frame of this elevator can be enclosed with color steel plates, it is very beneficial to environmental protection; 9. Since the hopper of this elevator is flared, it does not need to change the hopper posture during loading, so it is very easy to load. In view of the above functions and beneficial effects, this vertical elevator will be very beneficial for the short-process blast furnace in "A Short-Process Blast Furnace Ironmaking Process". BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG. Figure 1 is a schematic diagram of the front view of the hopper assembly of the present invention;

[0009] FIG. Figure 2 is a schematic diagram of the left view of the hopper assembly of the present invention (i.e., FIG. Figure 1 left view);

[0010] FIG. Figure 3It is a schematic diagram of the hoist of the present invention capable of showing the upper structure condition and the discharging state of the right hopper (i.e., the schematic diagram after cutting off the right column and the right groove-shaped track);

[0011] Appendix Figure 4 It is the left view of the overall state of the schematic diagram of the hoist of the present invention capable of showing the upper structure condition and the discharging state of the right hopper (i.e., the left view in the complete state of Appendix Figure 3 in the complete state);

[0012] Appendix Figure 5 It is a schematic diagram of the top view of the present invention capable of showing the situation of the square frame of the counterweight mechanism;

[0013] Appendix Figure 6 It is a schematic diagram of the present invention capable of showing the basic shape of the receiving fork.

[0014] Explanation of reference numerals in the drawings: In the figure, 1. Hopper, 2. Extension section (two pieces), 3. Wheels (two pieces), 3.1. Wheels (two pieces), 3.2. Wheels (two pieces), 3.3. Counterweight mechanism wheels (four pieces), 4. Lower wheel shaft, 4.1. Upper wheel shaft, 4.2. Hopper flipping wheel shaft, 4.3. Short wheel shafts (four pieces), 5. Wire rope group for hoisting the hopper assembly, 6. Wire rope connector, 7. Traction rods (two pieces), 8. Groove-shaped tracks for vertical hoisting of the hopper assembly (two pairs of four pieces), 9. Groove-shaped tracks for maintaining the hopper posture and their turning sections (two pairs of four pieces), 10. Receiving fork, 11. Square lower frame, 12. Counterweight block, 13. Square upper frame, 14. Top platform, 15. Motor, 16. Reducer, 17. Guide pulley frame, 18. Guide pulley shafts (two pieces), 19. Guide pulley bearing seats (four pieces), 20. Guide pulleys (two pieces), 21. Driving wheel, 22. Driving wheel shaft, 23. Driving wheel bearing seat, 24. Weight limiters (four pieces), 25. Wire ropes for suspending the counterweight mechanism (four pieces), 26. Weights (two pieces), 27. Weight pulley assemblies (eight pieces), 28. Wire rope connectors for the counterweight mechanism (four pieces), 29. Upward opening of the receiving fork, 30. Middle through hole of the square frame of the counterweight mechanism, 31. Bolt holes for fixing the counterweight block in the counterweight mechanism, 32. Downward fork of the receiving fork, 33. Left columns (two pieces), 34. Middle columns (two pieces), 35. Right columns (two pieces), 36. Support pieces.

[0015] Explanation regarding the drawings and the content not expressed in the drawings: 1. Appendix Figure 3 、 4 shows the mechanism layout of the upper part of the hoist and the situation when the right hopper assembly runs to the upper part for discharging. Considering that the mechanism layout of the left hopper assembly below is relatively simple, it can be fully referred to Appendix Figure 1 、 2For the sake of understanding, no additional drawings are provided. 2. To make the composition concise and clear, Figure 3 , 4 the transverse connecting beams that should originally exist between the main frame columns in 4 and the diagonal braces that need to be added for firmness are not specifically shown, and only described in words. 3. To make the composition concise and clear, Figure 3 the groove surface of the grooved track in Figure 3 is only shown in double lines, only for expressing its location and the basic shape at the turning point. The cross-section of its groove can be fully understood from the literal description, so no cross-sectional view of the grooved track is attached. 4. The counterweight mechanism and its counterweight blocks need to be connected and fixed with bolts. For the sake of simplicity and clarity of the drawing, Figure 3 , 4 do not show the bolts, and only indicate the bolt hole positions in Figure 5 . 5. There are also holes on the top platform of the main frame through which the steel wire ropes can pass downward. Due to reasons of the composition, they cannot be expressed in the attached drawings and are only described in words. 6. Since the holes at both ends of the towing rod and the holes at the lower end of the extension section can be fully understood according to the text description, no additional part drawings are attached. This is hereby explained. Specific Embodiments

[0016] With reference to the attached drawings of the specification and in combination with specific embodiments, the present invention is elaborated in detail.

[0017] The specific embodiments of the present invention are implemented as follows: The easy-loading and easy-unloading vertical elevator has two sets of hopper assemblies, and each set includes a hopper (1), an extension section (2), a lower wheel shaft (4), an upper wheel shaft (4.1), a wheel shaft for hopper flipping (4.2), wheels (3, 3.1, and 3.2), a towing rod (7), and a steel wire rope connector (6); the side shape of the hopper (1) is fan-shaped, and its flare angle is between 60° and 90°; the extension section (2) has two pieces, which are respectively fixed on both sides of the bottom of the hopper (1), and there is a support member (36) for reinforcement between the two extension sections (2); the lower part of the extension section (2) has a hole, and the hole is sleeved on the lower wheel shaft (4); the towing rod (7) has two pieces, which are respectively installed on both sides of the hopper (1), and both ends have holes. Its length exceeds the height of the hopper plus the height of the extension section. Its lower hole is sleeved on the lower wheel shaft (4), and the upper hole is sleeved on the upper wheel shaft (4.1); a steel wire rope connector (6) is installed and fixed upward in the middle of the upper wheel shaft (4.1), and the steel wire rope connector (6) connects the steel wire rope group (5) for hopper assembly lifting; the wheel shaft for hopper flipping (4.2) is installed and fixed at a position slightly downward along the edge of the discharging side of the hopper (1); the wheels (3.2) are installed at both ends of the wheel shaft for hopper flipping (4.2); the wheels (3) are installed at both ends of the lower wheel shaft (4); the wheels (3.1) are installed at both ends of the upper wheel shaft (4.1).

[0018] The described hopper assembly operates within a steel structure framework. The steel structure framework is divided into two spaces by an intermediate column (34), and a set of hopper assemblies is arranged in each space. There is a top platform (14) at the top of the framework. On the top platform (14), a driving wheel bearing seat (23), a speed reducer (16), and a guide pulley framework (17) are installed and arranged. A driving wheel shaft (22) is installed within the driving wheel bearing seat (23), and a driving wheel (21) is installed on the driving wheel shaft (22). The motor (15) is installed on the speed reducer (16), thus forming its driving mechanism. A guide pulley bearing seat (19) is installed on the guide pulley framework (17), a guide pulley shaft (18) is installed within the guide pulley bearing seat (19), and a guide pulley (20) is installed on the guide pulley shaft (18). Both the guide pulley (20) and the driving wheel (21) are multi-grooved, so as to facilitate the parallel distribution of multiple steel wire ropes. Both ends of the steel wire rope group (5) for hopper assembly lifting are connected to the steel wire rope connecting piece (6) through the openings at the corresponding positions of the top platform (14), thereby realizing the connection of one set of hopper assembly at each end. Its specific description is: one end of the steel wire rope group (5) for hopper assembly lifting is connected to a set of hopper assemblies through the steel wire rope connecting piece (6), first passes upward through the middle through-hole (30) of the weight mechanism's figure-eight framework, then passes through the platform opening, bypasses a guide pulley (20) downward, then bypasses the driving wheel (21) upward, then bypasses another guide pulley (20) upward, then passes through the platform opening downward, passes through the middle through-hole (30) of the figure-eight framework of another set of weight mechanisms, and is connected to the steel wire rope connecting piece (6) of another set of hopper assemblies. Since the driving wheel (21) can rotate bidirectionally under the drive of its driving mechanism, the steel wire rope group (5) for hopper assembly lifting can move bidirectionally. Therefore, a reciprocating feeding mode can be realized in which one set of hopper assemblies moves upward and the other set of hopper assemblies moves downward.

[0019] On the inner sides of the left column (33) and the right column (35) of the steel structure framework, two pairs of groove-shaped tracks with a groove-shaped cross-section are symmetrically arranged in the two spaces on both sides of the intermediate column (34). One pair is the groove-shaped track (8) for the vertical lifting of the hopper assembly, and the other pair is the groove-shaped track for maintaining the hopper attitude and its turning section (9). Specifically, the two wheels (3) at both ends of the lower wheel shaft (4) and the two wheels (3.1) at both ends of the upper wheel shaft (4.1) run within the groove-shaped track (8) for the vertical lifting of the hopper assembly. The two wheels (3.2) at both ends of the hopper turning wheel shaft (4.2) run within the groove-shaped track for maintaining the hopper attitude and its turning section (9). When the wheels (3.2) for hopper turning enter the turning section of the groove-shaped track for maintaining the hopper attitude, the hopper starts to turn over and discharge materials.

[0020] To prevent the problem that when one hopper is discharging materials and after the discharging is completed, the significant reduction in weight affects the start-up and lifting of another hopper, a set of counterweight mechanisms is added to each operating space. The counterweight mechanism is suspended at the upper part by steel wire ropes and weights. The counterweight mechanism and the hopper assembly share the grooved track (8) for the vertical lifting of the hopper assembly, that is, the wheels (3.3) run within the grooved track (8) for the vertical lifting of the hopper assembly; when the hopper assembly rises to the position where it needs to discharge materials, its counterweight mechanism starts to function, that is, when the upper wheel shaft (4.1) at the upper part of the hopper assembly enters the downward fork opening (32) of the receiving fork (10) below the square frame with a loop in the middle (11), the counterweight mechanism starts to function; the components of the counterweight mechanism include a square frame with a loop in the middle at the upper part (13), counterweight blocks (12), a square frame with a loop in the middle at the lower part (11), short wheel shafts (4.3) and wheels (3.3), as well as a receiving fork (10) and a wire rope connecting piece for the counterweight mechanism (28); a short wheel shaft (4.3) is installed at each end in the downward direction under the square frame with a loop in the middle at the lower part (11) and above the square frame with a loop in the middle at the upper part (13), and a wheel (3.3) is installed on each short wheel shaft (4.3); the opening (29) at the upper end of the receiving fork (10) rides on the short wheel shaft (4.3) and is welded firmly; the counterweight blocks (12) are installed between the square frame with a loop in the middle at the lower part (11) and the square frame with a loop in the middle at the upper part (13) by bolts, and the total weight of the counterweight blocks is equivalent to the weight of the hopper assembly; the wire rope group (5) for lifting the hopper assembly passes through the center of the square frame with a loop in the middle when viewed from above; the wire rope connecting piece for the counterweight mechanism (28) is welded on the upper surface of the square frame with a loop in the middle at the upper part (13); there are openings at the positions corresponding to the wire rope connecting piece for the counterweight mechanism (28) on the top floor platform (14) for passing through the wire rope (25) for suspending the counterweight mechanism; at the positions corresponding to the openings on the top floor platform (14) and at the edge of the top floor platform (14) corresponding to the position for suspending the weight (26), weight pulley assemblies (27) are installed for laying out the wire rope (25) for suspending the counterweight mechanism; the weight (26) is suspended outside the main frame by the wire rope (25) for suspending the counterweight mechanism; one end of the wire rope (25) for suspending the counterweight mechanism is fixed on the wire rope connecting piece for the counterweight mechanism (28), and the other end is fixed on the weight (26); the stroke of the counterweight mechanism is determined by the length of the wire rope (25) for suspending the counterweight mechanism; the suspension position of the counterweight mechanism in the non-working state is limited by the weight limit piece (24) welded on the lower edge of the top floor platform (14).

[0021] The above detailed description is a preferred specific implementation of the present invention. Therefore, those that use a flared hopper or a skip; those that have two sets of parallel tracks, with one set for vertical lifting and one set for attitude maintenance and tipping discharge; those that are provided with a counterweight mechanism in the upper part within the main frame to apply to the empty hopper or skip and thereby facilitate the start of the hopper or skip, regardless of the shape or the structural form, all fall within the protection scope of the present invention; in addition to the above statements, those many other modifications and changes made by those of ordinary skill in the art without creative efforts based on the present invention, or the technical solutions obtained by those skilled in the art through certain technical means based on the concept of the present invention, should also fall within the protection scope determined by the present invention.

Claims

1. A vertical elevator that is easy to load and unload materials, characterized in that: There are two spaces within the steel structure framework, and there is a set of hopper assemblies in each space; on the inner sides of the left and right columns of the steel structure framework, a grooved track for the vertical lifting of the hopper assembly and a grooved track for maintaining the hopper posture and its turning section are respectively installed. On both sides of the middle column, a grooved track for the vertical lifting of the hopper assembly and a grooved track for maintaining the hopper posture and its turning section are installed; there is a top platform at the top of the steel structure framework, and there are a driving wheel bearing seat, a speed reducer, and a guide pulley framework on the top platform; a driving wheel shaft is installed in the driving wheel bearing seat, and a driving wheel is installed on the driving wheel shaft; the motor is installed on the speed reducer; a guide pulley bearing seat is installed on the guide pulley framework, a guide pulley shaft is installed in the guide pulley bearing seat, and a guide pulley is installed on the guide pulley shaft; the guide pulley and the driving wheel are multi-grooved, and steel wires are distributed in the grooves; one end of the steel wire rope group for lifting the hopper assembly is connected to a set of hopper assemblies through a steel wire rope connector, then passes upward through the middle through-hole of the double-square frame of the counterweight mechanism, passes through the platform opening, bypasses a guide pulley and then goes downward, bypasses the driving wheel and then goes upward and bypasses another guide pulley, then goes downward through the platform opening, and passes through the middle through-hole of the double-square frame of the counterweight mechanism, and is connected to the steel wire rope connector of another set of hopper assemblies; The hopper assembly consists of a hopper, an extension section, a lower wheel shaft, an upper wheel shaft, a wheel shaft for hopper flipping, a traction rod, a steel wire rope connector, and six wheels; the side of the hopper is fan-shaped, and the flare angle is between 60° and 90°; there are two extension sections, which are respectively fixed on both sides of the bottom of the hopper, and there are support members for reinforcement between the two extension sections; there are holes at the lower part of the extension section, and the holes are sleeved on the lower wheel shaft; there are two traction rods, with holes at both ends, which are respectively installed on both sides of the hopper, and the length exceeds the sum of the hopper height and the extension section height. The lower holes are sleeved on the lower wheel shaft, and the upper holes are sleeved on the upper wheel shaft; a connector for fixing the steel wire rope is installed upward in the middle of the upper wheel shaft, and the connector is connected upward to the steel wire rope group for lifting the hopper assembly; a wheel shaft for hopper flipping is installed downward along the edge of the hopper dumping side, and wheels are installed at both ends of the wheel shaft for hopper flipping, and the wheels run in the grooved track for maintaining the hopper posture and its turning section; wheels are installed at both ends of the lower wheel shaft and the upper wheel shaft, and the wheels run in the grooved track for the vertical lifting of the hopper assembly; Install a set of counterweight mechanisms at the upper part of each of the two spaces within the steel structure framework; each set of counterweight mechanisms has 4 short shafts, which are respectively installed and fixed at both ends of the frame in a shape of a double-square when viewed from above. Wheels are installed on the short shafts and run within the groove-shaped tracks for the vertical lifting of the hopper; the counterweight blocks are installed between the upper and lower double-square frames by bolts, and the total weight of the counterweight blocks is equivalent to the weight of the hopper assembly; install a receiving fork downward under the lower double-square frame, and the receiving fork is used to receive the upper wheel shaft of the hopper assembly that is ascending and reaches the position where the counterweight mechanism is located; install a counterweight mechanism wire rope connecting piece on the upper surface of the upper double-square frame. One end of the wire rope for suspending the counterweight mechanism is connected to the counterweight mechanism through this connecting piece, and the other end of the wire rope for suspending the counterweight mechanism is connected to a heavy hammer; this wire rope passes through the top platform and suspends the heavy hammer outside the frame through a pulley assembly; the suspension position of the counterweight mechanism is limited by the length of the wire rope and the limiting piece welded on the lower edge of the top platform in a way that limits the heavy hammer.

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