A tail counterweight adjusting device for a stone coal bucket elevator

Abstract

The utility model relates to hoist technical field discloses a kind of stone coal bucket hoist tail counterweight adjusting device, the utility model existing hoist's counterweight adjustment needs to stop counterweight adjustment problem.A kind of stone coal bucket hoist tail counterweight adjusting device, including hoist main body, the side of hoist main body is provided with side plate, the center of side plate is slidably connected with movable plate, the side of movable plate is provided with limit block, the side of limit block is provided with rotating rod, the outside of rotating rod is rotatably connected with lever, the lower surface of lever is provided with center rod, one end of center rod is provided with counterweight block mechanism, the upper surface of lever is provided with threaded rod, the outside of threaded rod is threadedly connected with fixed block, the side of hoist main body is fixedly connected with fixed block, the side of movable plate is also provided with toothed chain rotating shaft, can not stop adjustment, ensure that quickly counterweight adjustment work is carried out.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically to a tail counterweight adjustment device for a stone and coal bucket hoist. Background Technology

[0002] In industrial sectors such as thermal power generation and coal mining, the stone and coal bucket elevator is a key piece of equipment used for vertical or steeply inclined conveying of stone and coal, representing a special application type of bucket elevator. It mainly consists of a plate chain, wear-resistant buckets, a drive mechanism, and a tail counterweight mechanism. It needs to operate continuously under conditions of "low speed, heavy load, strong material abrasiveness, and large block impact" to achieve efficient transfer of stone and coal from the coal mill to subsequent processing systems.

[0003] The counterweight is a core functional component of the tail tensioning system of a stone and coal bucket elevator. It provides continuous and stable tension to the chain through its own weight or mechanical force, compensating for chain elongation caused by wear and thermal expansion and contraction, preventing chain skipping and derailment due to chain slack, and buffering the impact of chunky stones and coal during feeding, protecting core transmission components such as the chain and sprockets. However, existing counterweight equipment still has the following problems in use: The existing tail counterweight adjustment of the stone and coal bucket elevator relies on the fixed structure of the welded adjustment block. During adjustment, the machine must be stopped to disassemble the counterweight connecting parts and then reposition and install them. The machine stops for adjustment, causing the system to be out of service and affecting the unit's slag discharge efficiency. Moreover, the disassembly process requires multiple people to work together to move the counterweight, which is labor-intensive and poses safety risks of falling from height and collisions. Repeated disassembly can easily cause wear and tear on the connecting parts, reduce the reliability of the counterweight fixation, and indirectly affect the operational stability of the bucket elevator. Utility Model Content

[0004] The purpose of this utility model is to provide a counterweight adjustment device at the tail of a stone and coal bucket elevator. By using this device, the problem of needing to stop the machine to adjust the counterweight in existing elevators can be solved.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tail counterweight adjustment device for a stone and coal bucket elevator, comprising an elevator body, a side plate provided on the side of the elevator body, a movable plate slidably connected to the center of the side plate, a limit block provided on the side of the movable plate, a rotating rod provided on the side of the limit block, a lever rotatably connected to the outer side of the rotating rod, a central rod provided on the lower surface of the lever, a counterweight mechanism provided at one end of the central rod, a threaded rod provided on the upper surface of the lever, a fixing block threadedly connected to the outer side of the threaded rod, the fixing block being fixedly connected to the side of the elevator body, and a toothed chain shaft provided on the side of the movable plate.

[0006] Preferably, the connection between the hoist body and the side plate is a fixed connection. The side plates are symmetrically distributed on both sides of the center of the movable plate. A rubber ring is attached to the connection between the movable plate and the hoist body to seal the movable plate and prevent dust leakage.

[0007] Preferably, the counterweight mechanism includes a counterweight body slidably connected to the outside of the central rod. An insertion slot is provided on the side of the counterweight body, and a sliding block is slidably connected to the side of the counterweight body. The sliding block and the insertion block are connected in a sliding connection manner. The insertion block and the insertion slot have a mutually engaging structure. The counterweight bodies are staggered on the outside of the central rod. The counterweight bodies can be quickly disassembled by the sliding block, which facilitates rapid counterweighting.

[0008] Preferably, the bottom of the threaded rod is slidably connected to a protruding rod, and the protruding rod is fixedly connected to the lever, while the lever is rotatably connected to the central rod. The protruding rod allows the lever to rise and fall slightly on its own, working in conjunction with the movable plate.

[0009] Preferably, the lever has a groove in the center, and the groove is connected to the limiting block by a sliding connection. The rotating rod passes through the limiting block, and hexagonal bolts are connected to both sides of the rotating rod. The groove cooperates with the limiting block, allowing the limiting block to slide inside the lever, which facilitates the rotation of the lever.

[0010] Preferably, the inner side of the toothed chain shaft is connected to a tail wheel, and the outer side of the tail wheel is connected to a toothed chain. The toothed chain shaft is connected to the movable plate by screws. The movable plate is used to press down on the toothed chain shaft to ensure that the tension adjustment of the toothed chain shaft can be carried out.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Adjustments can be made without stopping the machine, ensuring rapid counterweight adjustment: By setting a threaded rod and a fixed block on the upper surface of the lever, the height of the lever is changed by the threaded connection between the threaded rod and the fixed block, thereby squeezing the lever and freely adjusting the height of the lever, so that the lever is always in a balanced state and the tension adjustment of the toothed chain shaft is always performed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the movable plate of this utility model; Figure 3 This is a schematic diagram of the lever explosion structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the counterweight mechanism of this utility model.

[0013] In the diagram: 1. Lifting machine body; 2. Counterweight mechanism; 201. Counterweight body; 202. Sliding block; 203. Insertion block; 204. Insertion slot; 3. Fixing block; 4. Threaded rod; 5. Lever; 6. Limiting block; 7. Rotating rod; 8. Center rod; 9. Movable plate; 10. Side plate; 11. Toothed chain shaft. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0016] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 A tail counterweight adjustment device for a stone and coal bucket elevator includes an elevator body 1. A side plate 10 is provided on the side of the elevator body 1, limiting a movable plate 9 to ensure its vertical lifting. The movable plate 9 is slidably connected to the center of the side plate 10, and the movable plate 9 is used to connect to a toothed chain shaft 11. A limit block 6 is provided on the side of the movable plate 9, limiting a lever 5. A rotating rod 7 is provided on the side of the limit block 6, and the lever 5 is rotatably connected to the outer side of the rotating rod 7. A center rod is provided on the lower surface of the lever 5. 8. The center rod 8 is used to connect the counterweight body 201. One end of the center rod 8 is provided with a counterweight mechanism 2. The counterweight mechanism 2 provides a downward force to the lever 5. The upper surface of the lever 5 is provided with a threaded rod 4. The threaded rod 4 can adjust the height of the lever 5 without stopping the machine. The outer side of the threaded rod 4 is threaded with a fixing block 3. The fixing block 3 limits the connection of the threaded rod 4. The fixing block 3 is fixedly connected to the side of the hoist body 1. The side of the movable plate 9 is also provided with a toothed chain shaft 11. The toothed chain shaft 11 is used to connect the toothed chain and the tail wheel.

[0017] The present invention will be further described below with reference to the embodiments.

[0018] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The connection between the hoist body 1 and the side plate 10 is a fixed connection. The side plates 10 are symmetrically distributed on both sides of the center of the movable plate 9. A rubber ring is attached to the connection between the movable plate 9 and the hoist body 1. The rubber ring seals the movable plate 9 to ensure a seal and prevent dust leakage. The inner side of the toothed chain shaft 11 is connected to the tail wheel, and the outer side of the tail wheel is connected to the toothed chain. The connection between the toothed chain shaft 11 and the movable plate 9 is a screw connection. The movable plate 9 is used to press down on the toothed chain shaft 11 to ensure the tension adjustment of the toothed chain shaft 11.

[0019] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The counterweight mechanism 2 includes a counterweight body 201 slidably connected to the outside of the central rod 8. An insertion slot 204 is provided on the side of the counterweight body 201. A sliding block 202 is slidably connected to the side of the counterweight body 201. The sliding block 202 and the insertion block 203 are connected in a sliding connection manner. The insertion block 203 and the insertion slot 204 have a mutually engaging structure. The counterweight bodies 201 are staggered on the outside of the central rod 8. The counterweight bodies 201 can be quickly disassembled by the sliding block 202, which facilitates the rapid counterweighting operation.

[0020] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The bottom of the threaded rod 4 is slidably connected to a protruding rod, and the protruding rod is fixedly connected to the lever 5. The lever 5 is rotatably connected to the central rod 8. The protruding rod allows the lever 5 to rise and fall slightly on its own, working in conjunction with the movable plate 9. The center of the lever 5 has a groove, and the groove is slidably connected to the limiting block 6. The rotating rod 7 passes through the limiting block 6, and hexagonal bolts are connected to both sides of the rotating rod 7. Through the groove, the limiting block 6 is engaged with the limiting block 6, allowing the limiting block 6 to slide inside the lever 5, facilitating the rotation of the lever 5.

[0021] Working principle: First, gravity loading is completed through the counterweight mechanism 2. The counterweight body 201 is fitted into the central rod 8. The sliding block 202 is inserted into the counterweight body 201 to achieve initial closure. After the new counterweight body 201 is stacked in reverse, the insertion block 203 is inserted into the interior of the sliding block 202. At the same time, the engagement structure between the insertion block 203 and the insertion groove 204 in the counterweight body 201 below completes the fixation of the different counterweight bodies 201. The gravity of the counterweight body 201 is transmitted to one end of the lever 5 through the central rod 8, forming a continuous downward pulling force. The lever 5 uses the rotating rod 7 that passes through the limiting block 6 as the fulcrum. The sliding fit between the limiting block 6 and the groove of the lever 5 ensures rotational stability. The other end of the lever 5 is connected to the threaded rod 4 through the protruding rod. The threaded rod 4 is threadedly engaged with the fixing block 3 on the lifting body 1, forming a force balance system of counterweight gravity, lever 5, and threaded rod 4, which provides the basic force for the tensioning of the toothed chain. Meanwhile, during operation, when the toothed chain becomes loose or tight due to wear, thermal expansion and contraction, it will drive the toothed chain shaft 11 to move synchronously. If the toothed chain is loose, the toothed chain shaft 11 will move downward with the movable plate 9, pulling the counterweight end of the lever 5 downward through the limit block 6, and automatically tightening the toothed chain using the weight of the counterweight. If the toothed chain is too tight, the toothed chain shaft 11 will push the movable plate 9 upward, causing the counterweight end of the lever 5 to rise. Through force balance adaptive buffering of impact, during this process, the guiding effect of the side plate 10 on the movable plate 9 ensures vertical stability of the displacement. The rubber ring between the movable plate 9 and the lifting machine body 1 can isolate dust and prevent internal parts from jamming. When dynamic adaptive buffering cannot meet the tension requirements, there is no need to stop the machine. Disassembly involves directly rotating the threaded rod 4 to vertically raise and lower it along the fixed block 3. This causes the bottom protrusion to push the lever 5 to deflect around the rotating rod 7, ensuring that the lever 5 remains in a balanced state. During adjustment, the sliding between the groove of the lever 5 and the limiting block 6, and the sliding connection between the protrusion and the threaded rod 4, can adapt to changes in the angle of the lever 5, ensuring smooth adjustment without affecting the normal operation of the gear chain. When the load changes and the counterweight needs to be added or removed, the sliding block 202 of the corresponding counterweight block body 201 can be unlocked by sliding, allowing the insertion block 203 to disengage from the insertion slot 204. This allows the target counterweight block body 201 to be disassembled separately without overall disassembly. Fine-tuning with the threaded rod 4 achieves precise matching between the counterweight and the tension.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail counterweight adjustment device for a stone and coal bucket elevator, comprising the elevator body (1), characterized in that: The side of the hoist body (1) is provided with a side plate (10), and a movable plate (9) is slidably connected to the center of the side plate (10). A limit block (6) is provided on the side of the movable plate (9), and a rotating rod (7) is provided on the side of the limit block (6). A lever (5) is rotatably connected to the outer side of the rotating rod (7). A center rod (8) is provided on the lower surface of the lever (5). A counterweight mechanism (2) is provided at one end of the center rod (8). A threaded rod (4) is provided on the upper surface of the lever (5). A fixing block (3) is threadedly connected to the outer side of the threaded rod (4). The fixing block (3) is fixedly connected to the side of the hoist body (1). A toothed chain shaft (11) is also provided on the side of the movable plate (9).

2. The tail counterweight adjustment device for a stone and coal bucket elevator according to claim 1, characterized in that: The connection between the lifting machine body (1) and the side plate (10) is a fixed connection. The side plate (10) is symmetrically distributed on both sides of the center of the movable plate (9). A rubber ring is attached to the connection between the movable plate (9) and the lifting machine body (1).

3. The tail counterweight adjustment device for a stone and coal bucket elevator according to claim 1, characterized in that: The counterweight mechanism (2) includes a counterweight body (201) that is slidably connected to the outside of the central rod (8). An insertion slot (204) is provided on the side of the counterweight body (201). A sliding block (202) is slidably connected to the side of the counterweight body (201). The sliding block (202) and the insertion block (203) are connected in a sliding connection manner. The insertion block (203) and the insertion slot (204) are mutually engaged. The counterweight body (201) is staggered on the outside of the central rod (8).

4. The tail counterweight adjustment device for a stone and coal bucket elevator according to claim 1, characterized in that: The bottom of the threaded rod (4) is slidably connected to a protruding rod, and the protruding rod is fixedly connected to the lever (5). The lever (5) is rotatably connected to the center rod (8).

5. The tail counterweight adjustment device for a stone and coal bucket elevator according to claim 4, characterized in that: The lever (5) has a groove in the center, and the groove is connected to the limiting block (6) in a sliding connection. The rotating rod (7) passes through the limiting block (6), and hexagonal bolts are connected to both sides of the rotating rod (7).

6. The tail counterweight adjustment device for a stone and coal bucket elevator according to claim 1, characterized in that: The inner side of the toothed chain shaft (11) is connected to a tail wheel, and the outer side of the tail wheel is connected to a toothed chain. The toothed chain shaft (11) and the movable plate (9) are connected by screws.

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