A chain deviation prevention mechanism for an elevator

Abstract

The utility model discloses a kind of prevent chain deviation mechanism for elevator, it is related to hoist technical field, including jacking shaft, the jacking shaft outer end is provided with sprocket, the sprocket outer end is engaged with chain, the sprocket outer end is provided with anti-deviation mechanism, anti-deviation mechanism includes: fixed frame, the fixed frame upper end is connected with side end frame;Adjusting plate, the adjusting plate is located fixed frame side end, and it is slidably connected with frame, the sprocket, chain are located between fixed frame and adjusting plate.The utility model design structure is reasonable, it is by being provided with fixed frame and adjusting plate, chain wheel and chain are limited between two, effectively limit chain to move and left and right to shift, using adjusting bolt can adjust the relative position of adjusting plate and fixed frame, to be able to according to chain actual operation condition, flexibly adjust the constraint to sprocket and chain, effectively prevent chain deviation, reduce chain and the abrasion of each component, prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically a mechanism for preventing chain deviation in hoists. Background Technology

[0002] As a core piece of equipment for vertical material transport in industrial production, elevators are widely used in mining, chemical, building materials, and grain industries. Their operational stability directly determines production efficiency and operational safety. In the transmission system of an elevator, the meshing transmission between the chain and sprocket is the key link in realizing material transport.

[0003] However, during long-term operation, traditional elevators are prone to changes in the relative position between the sprocket and the chain due to vibrations and uneven material distribution. This can cause the chain to run off-track. Once the chain runs off-track, it will not only accelerate the wear of the chain, sprocket, and other related components, shorten the service life of the equipment, and increase maintenance costs, but may also lead to instability in the material lifting process, affecting production efficiency.

[0004] To address these issues, we provide a chain misalignment prevention mechanism for elevators. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] This utility model proposes a chain deviation prevention mechanism for elevators. By cooperating with the fixed frame, adjusting plate and adjusting bolt in the anti-deviation mechanism, the problem of chain deviation in traditional elevators, which leads to unstable material lifting, is solved.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a chain anti-deviation mechanism for a hoist, comprising a lifting shaft, a sprocket at the outer end of the lifting shaft, a chain meshing at the outer end of the sprocket, and an anti-deviation mechanism at the outer end of the sprocket, the anti-deviation mechanism comprising:

[0009] A fixed frame, wherein the upper end and the side end of the fixed frame are connected by a border;

[0010] An adjusting plate is located at the side end of the fixed frame and is slidably connected to the frame. The sprocket and chain are located between the fixed frame and the adjusting plate. The sprocket and chain are slidably connected to the inner walls of the fixed frame and the adjusting plate. The fixed frame and the adjusting plate are provided with sliding grooves, and the lifting shaft is slidably connected in the sliding grooves.

[0011] An adjusting bolt is rotatably connected inside the adjusting plate and threadedly connected inside the fixed frame. A constraint ring is connected to the outer end of the adjusting bolt, and the constraint ring and the bolt head of the adjusting bolt are located on opposite sides of the adjusting plate.

[0012] Furthermore, a detachable plate is provided inside the fixed frame and the adjusting plate, and a connecting plate is connected to the outer end of the detachable plate. The connecting plate has a corresponding connecting hole with the fixed frame and the adjusting plate.

[0013] Furthermore, a base plate is provided at the lower end of the fixed frame, and an mounting plate is connected to the lower end of the fixed frame. The mounting plate and the base plate are respectively provided with connection holes.

[0014] Furthermore, a lifting cylinder is connected to the upper middle part of the base plate, and a lifting block is connected to the upper driving end of the lifting cylinder. The lifting block is connected to the outer end of the lifting shaft.

[0015] Furthermore, the upper ends of both sides of the base plate are connected to support frames, and the support frames are provided with a first track groove and a second track groove.

[0016] Furthermore, a movable block is slidably connected within the first track groove, and a bearing is provided within the movable block, with the lifting shaft side end connected within the bearing.

[0017] Furthermore, a lifting plate is slidably connected within the second track groove, with one end of the chain connected to the upper end of the base plate and the other end connected to the upper end of the lifting plate.

[0018] (iii) Beneficial effects:

[0019] Compared with existing technologies, this chain misalignment prevention mechanism for hoists has the following advantages:

[0020] I. This chain deviation prevention mechanism for a hoist, by setting a fixed frame and an adjusting plate, restricts the sprocket and chain between them, forming a blocking constraint on both sides of the sprocket and chain, effectively limiting the chain's lateral movement during operation. The relative position of the adjusting plate and the fixed frame can be adjusted using adjusting bolts, thereby flexibly adjusting the constraint on the sprocket and chain according to the actual operation of the chain, effectively preventing chain deviation, reducing wear on the chain and other components, and extending the service life of the equipment.

[0021] 2. The chain deviation prevention mechanism for the hoist is provided by setting a detachable plate inside the fixed frame and adjusting plate. After moving the lifting shaft to the side of the detachable plate, the detachable plate is removed. At this time, the connection between the fixed frame and the bottom plate is disassembled, so that the fixed frame and adjusting plate can be removed from the outside of the lifting shaft (the lifting shaft can pass through the gap of the detachable plate), which facilitates the replacement or maintenance (lubrication) of the sprocket. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the overall structure of the anti-chain deviation mechanism for a hoist according to this utility model;

[0024] Figure 2 This is a schematic diagram of the sprocket structure of the anti-chain deviation mechanism for a hoist according to this utility model;

[0025] Figure 3 This is a schematic diagram of the fixing frame structure of the anti-chain deviation mechanism for a hoist according to the present invention;

[0026] Figure 4 This is a schematic diagram of the detachable plate structure of the anti-chain deviation mechanism for a hoist according to the present invention;

[0027] Figure 5 This is a schematic diagram of the side end structure of the chain anti-deviation mechanism for a hoisting machine according to the present invention.

[0028] In the diagram: 1. Lifting shaft; 2. Sprocket; 3. Chain; 4. Fixing frame; 401. Frame; 402. Mounting plate; 5. Adjusting plate; 6. Slide groove; 7. Adjusting bolt; 701. Constraint ring; 8. Detachable plate; 801. Connecting plate; 9. Base plate; 10. Lifting cylinder; 11. Lifting block; 12. Support frame; 13. First track groove; 14. Second track groove; 15. Moving block; 16. Lifting plate. Detailed Implementation

[0029] 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.

[0030] like Figures 1-5 As shown, this utility model provides a technical solution: a chain anti-deviation mechanism for a hoist, including a lifting shaft 1, a sprocket 2 at the outer end of the lifting shaft 1, a chain 3 meshing at the outer end of the sprocket 2, and an anti-deviation mechanism at the outer end of the sprocket 2, the anti-deviation mechanism including: a fixed frame 4, an adjusting plate 5, and an adjusting bolt 7.

[0031] A frame 401 is connected to the upper and side ends of the fixed frame 4. The adjusting plate 5 is located on the side end of the fixed frame 4 and is slidably connected to the frame 401. The frame 401 can semi-enclose the sprocket 2 and the chain 3 to reduce external dust contamination of the lubricating grease. The sprocket 2 and the chain 3 are both located between the fixed frame 4 and the adjusting plate 5. The sprocket 2 and the chain 3 are slidably connected to the inner walls of the fixed frame 4 and the adjusting plate 5. During operation, the sprocket 2 is constrained by the inner walls of the fixed frame 4 and the adjusting plate 5, which limits its horizontal deviation, thereby ensuring that the chain 3 runs along the correct trajectory. During operation, the two sides of the chain 3 are in contact with the inner walls of the fixed frame 4 and the adjusting plate 5 and are constrained by the anti-deviation mechanism to prevent it from deviating in the horizontal direction. The fixed frame 4 and the adjusting plate 5 are provided with a sliding groove 6, and the lifting shaft 1 is slidably connected in the sliding groove 6. In this way, the fixed frame 4 and the adjusting plate 5 will not interfere with or obstruct the operation of the lifting shaft 1.

[0032] The adjusting bolt 7 is rotatably connected inside the adjusting plate 5 and threadedly connected inside the fixed frame 4. A constraint ring 701 is connected to the outer end of the adjusting bolt 7. The constraint ring 701 and the bolt head of the adjusting bolt 7 are located on opposite sides of the adjusting plate 5. When the operator rotates the adjusting bolt 7, due to the transmission action of the thread, the adjusting plate 5 will move closer to or further away from the fixed frame 4 along the frame 401. During the operation of the hoist, if any signs of chain 3 deviation are detected, the operator can rotate the adjusting bolt 7 to apply a suitable lateral force to the chain 3 through the adjusting plate 5, returning the chain 3 to the correct running track and effectively preventing the deviation from worsening.

[0033] The fixed frame 4 and the adjusting plate 5 are equipped with a detachable plate 8. The outer end of the detachable plate 8 is connected to a connecting plate 801. The connecting plate 801 and the fixed frame 4 and the adjusting plate 5 are respectively provided with connecting holes, which are connected by bolts.

[0034] A base plate 9 is provided at the lower end of the fixed frame 4, and an installation plate 402 is connected to the lower end of the fixed frame 4. The installation plate 402 and the base plate 9 are respectively provided with connection holes. The fixed frame 4 can be installed and fixed through the installation plate 402. A lifting cylinder 10 is connected to the upper middle part of the base plate 9. The lifting cylinder 10 is the power source for adjusting the height of the lifting shaft 1. The upper drive end of the lifting cylinder 10 is connected to a lifting block 11. The lifting block 11 is connected to the outer end of the lifting shaft 1 and plays the role of transmitting the power of the lifting cylinder 10. It accurately transmits the vertical driving force generated by the lifting cylinder 10 to the lifting shaft 1, ensuring that the lifting shaft 1 can rise or fall smoothly.

[0035] Support frames 12 are connected to the upper ends of both sides of the base plate 9. The support frames 12 are provided with a first track groove 13 and a second track groove 14. A moving block 15 is slidably connected in the first track groove 13. A bearing is provided in the moving block 15. The side end of the lifting shaft 1 is connected in the bearing, which facilitates the rotation of the lifting shaft 1 in the moving block 15. When the lifting shaft 1 is adjusted in height under the action of the lifting cylinder 10, the moving block 15 slides synchronously in the first track groove 13 to provide lateral constraint for the lifting shaft 1, ensure the stability of the lifting shaft 1 during vertical movement, and prevent it from swaying back and forth.

[0036] A lifting plate 16 is slidably connected inside the second track groove 14. One end of the chain 3 is connected to the upper end of the base plate 9, and the other end is connected to the upper end of the lifting plate 16.

[0037] Working principle: When in use, the lifting cylinder 10 is started and drives the lifting shaft 1 to rise or fall through the lifting block 11, thereby driving the sprocket 2 to rise or fall. During the rising or falling process of the sprocket 2, it interacts with the chain 3 to change the height of the connection end between the chain 3 and the lifting plate 16, thereby adjusting the height of the lifting plate 16.

[0038] When installing or adding the anti-deviation mechanism: First, remove the detachable plate 8, move the lifting shaft 1 to the height of the detachable plate 8, align the notch created by the detachable plate 8 of the fixed frame 4 and the adjusting plate 5 with the sprocket 2 of the lifting shaft 1, and then push the fixed frame 4 horizontally so that the lifting shaft 1 passes through the notch and enters the slide groove 6. Then install the detachable plate 8. At this time, the sprocket 2 and the chain 3 will be located between the fixed frame 4 and the adjusting plate 5. According to the width of the sprocket 2 and the chain 3, rotate the adjusting bolt 7 to adjust the distance between the adjusting plate 5 and the fixed frame 4 so that the sprocket 2 and the chain 3 are located between the two and maintain appropriate constraints, forming a blocking constraint on both sides of the sprocket 2 and the chain 3, effectively limiting the chain 3 from moving left and right.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A chain anti-deviation mechanism for a hoist, comprising a lifting shaft (1), characterized in that: A sprocket (2) is provided at the outer end of the lifting shaft (1), and a chain (3) is engaged at the outer end of the sprocket (2). An anti-deviation mechanism is provided at the outer end of the sprocket (2), and the anti-deviation mechanism includes: Fixed frame (4), the upper end and the side end of the fixed frame (4) are connected by a frame (401). Adjustment plate (5), the adjustment plate (5) is located at the side end of the fixed frame (4) and is slidably connected to the frame (401). The sprocket (2) and chain (3) are both located between the fixed frame (4) and the adjustment plate (5). The sprocket (2) and chain (3) are slidably connected to the inner wall of the fixed frame (4) and the adjustment plate (5). The fixed frame (4) and the adjustment plate (5) are provided with a sliding groove (6). The lifting shaft (1) is slidably connected in the sliding groove (6). Adjusting bolt (7) is rotatably connected inside the adjusting plate (5). The adjusting bolt (7) is threadedly connected inside the fixed frame (4). A constraint ring (701) is connected to the outer end of the adjusting bolt (7). The bolt head of the constraint ring (701) and the bolt head of the adjusting bolt (7) are located on both sides of the adjusting plate (5).

2. The chain anti-deviation mechanism for a hoist according to claim 1, characterized in that: A detachable plate (8) is provided inside the fixed frame (4) and the adjusting plate (5). A connecting plate (801) is connected to the outer end of the detachable plate (8). The connecting plate (801) has a connecting hole corresponding to the fixed frame (4) and the adjusting plate (5).

3. The chain anti-deviation mechanism for a hoist according to claim 1, characterized in that: The bottom of the fixed frame (4) is provided with a base plate (9), and the bottom of the fixed frame (4) is connected to an mounting plate (402). The mounting plate (402) and the base plate (9) are respectively provided with connecting holes.

4. A chain anti-deviation mechanism for a hoist according to claim 3, characterized in that: The upper middle end of the base plate (9) is connected to a lifting cylinder (10), and the upper driving end of the lifting cylinder (10) is connected to a lifting block (11), which is connected to the outer end of the lifting shaft (1).

5. A chain anti-deviation mechanism for a hoist according to claim 3, characterized in that: The upper ends of both sides of the base plate (9) are connected to a support frame (12), and the support frame (12) is provided with a first track groove (13) and a second track groove (14).

6. A chain misalignment prevention mechanism for a hoist according to claim 5, characterized in that: A movable block (15) is slidably connected in the first track groove (13), and a bearing is provided in the movable block (15), with the side end of the lifting shaft (1) connected in the bearing.

7. A chain anti-deviation mechanism for a hoist according to claim 5, characterized in that: A lifting plate (16) is slidably connected in the second track groove (14). One end of the chain (3) is connected to the upper end of the base plate (9), and the other end is connected to the upper end of the lifting plate (16).

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