Anti-falling device for lifting mechanism of chain bucket type unloading machine

Abstract

The utility model discloses an anti-falling device for a lifting mechanism of a chain bucket type car unloader, and belongs to the technical field of chain bucket type car unloaders. The chain bucket car unloader solves the problems that a chain bucket of an existing chain bucket car unloader enables a steel wire rope to bear large bearing capacity, loss of the steel wire rope is large, and if the steel wire rope is broken, production accidents are prone to being caused. The anti-falling device comprises a winch, a bucket elevator, an anti-falling mechanism, a lifting pulley block, a fixed pulley and a machine frame, the winch and the fixed pulley are installed on the machine frame, the lifting pulley block is installed on the bucket elevator, the winch is connected with the lifting pulley block and the fixed pulley through steel wire ropes, and the anti-falling mechanism is installed on the machine frame. The anti-falling mechanism is connected with the bucket elevator in a matched mode. According to the anti-falling device for the lifting mechanism of the chain bucket type car unloader, the weight of the bucket type elevator is borne through the anti-falling mechanism on the rack, loss of the steel wire rope is reduced, and dangerous factors caused by damage and breakage of the steel wire rope are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of chain bucket unloaders, and particularly relates to a fall prevention device for the lifting mechanism of a chain bucket unloader. Background Technique

[0002] A chain bucket unloader is a device used for unloading bulk materials from railway cars. The materials are conveyed from the carriage to a designated location through chain buckets. The bucket chain inside the chain buckets moves cyclically along the guide rails, grabs and lifts the materials, and then unloads them to a predetermined position. It is applied to industrial sites such as mines, ports, and steel plants that require efficient unloading, and is suitable for handling bulk materials such as bulk ores, coal, and fertilizers.

[0003] Due to the different heights of the materials in the carriage and the gradual decrease in the height of the materials in the carriage during the unloading process, the existing chain buckets of chain bucket unloaders have a lifting function. Most of them use a winch to drive the lifting of the chain buckets to make the height of the chain buckets adapt to the height of the materials in the carriage. However, for the existing chain bucket unloaders, the steel wire ropes need to bear a large load, resulting in large wear and tear on the steel wire ropes. The replacement cycle of the steel wire ropes is relatively frequent. If the inspection and replacement of the steel wire ropes are not timely and the steel wire ropes break, it is easy to cause the chain buckets to fall, resulting in relatively large production accidents.

[0004] Therefore, this application proposes a fall prevention device for the lifting mechanism of a chain bucket unloader to solve the above problems. Summary of the Utility Model

[0005] The research and development purpose of the utility model is to solve the problems that the chain buckets of the existing chain bucket unloaders cause large load on the steel wire ropes, large wear and tear on the steel wire ropes, and easy production accidents if the steel wire ropes break. The following gives a brief overview of the utility model to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to identify the key or important parts of the utility model, nor is it intended to limit the scope of the utility model.

[0006] The technical solution of the utility model:

[0007] A fall prevention device for the lifting mechanism of a chain bucket unloader includes a winch, a bucket elevator, a fall prevention mechanism, a lifting pulley block, a fixed pulley, and a frame. The winch and the fixed pulley are installed on the frame. A lifting pulley block is installed on the bucket elevator. The winch is connected to the lifting pulley block and the fixed pulley through a steel wire rope. A fall prevention mechanism is installed on the frame, and the fall prevention mechanism is cooperatively connected with the bucket elevator.

[0008] Furthermore, the anti-fall mechanism includes a first hollow tube, a second hollow tube and a limiting slide tube. The first hollow tube and the second hollow tube are mirror-mounted on the frame. The limiting slide tube is slidably connected inside the second hollow tube, and the limiting slide tube is plugged into the first hollow tube.

[0009] Furthermore, a hydraulic cylinder is installed on the frame, a hydraulic rod of the hydraulic cylinder is inserted into the second hollow tube, an end of the hydraulic rod is connected to an extension rod, and the extension rod extends into the limiting slide tube and is connected to the limiting slide tube through a pin shaft.

[0010] Furthermore, the bucket elevator is symmetrically provided with blocks, which are cooperatively connected with the limiting sliding pipe.

[0011] The utility model has the following beneficial effects:

[0012] 1. The utility model provides an anti-falling device for the lifting mechanism of a chain bucket car unloader. Through the anti-falling mechanism on the frame, when the chain bucket car unloader is not working, it is used to bear the weight of the bucket elevator, thereby reducing the loss of the wire rope, extending the replacement cycle of the wire rope, and avoiding the dangerous factors caused by the damage of the wire rope.

[0013] 2. The utility model provides a falling prevention device for the lifting mechanism of a chain bucket car unloader. The limiting slide tube is retracted in the second hollow tube and plugged into the first hollow tube to resist the block of the bucket elevator. The extension and retraction of the limiting slide tube is controlled by a hydraulic cylinder. During the operation of the chain bucket car unloader, when the winch drives the bucket elevator to rise or fall, the hydraulic cylinder drives the limiting slide tube to shrink through the hydraulic rod so as not to contact the block. After the chain bucket car unloader stops operating, the winch and the bucket elevator are lifted to a specified height and fixed, and the hydraulic cylinder drives the limiting slide tube to extend through the hydraulic cylinder to play a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a fall prevention device for the lifting mechanism of a chain bucket type unloader;

[0015] Figure 2 yes Figure 1 A top view of

[0016] Figure 3 yes Figure 1 Side view of

[0017] Figure 4 It is the front view of the fall prevention mechanism;

[0018] Figure 5 It is a top view of the anti-fall mechanism.

[0019] In the figure: 1 - winch, 2 - bucket elevator, 3 - anti - fall mechanism, 4 - hoisting pulley block, 5 - steel wire rope, 6 - fixed pulley, 7 - winch guard, 8 - frame, 9 - stop block, 10 - hydraulic cylinder, 11 - first hollow tube, 12 - second hollow tube, 13 - hydraulic rod, 14 - limit sliding tube, 15 - extension rod, 16 - pin shaft. Detailed implementation manners

[0020] To make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well - known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0021] The connections mentioned in the present utility model are divided into fixed connections and detachable connections. The fixed connections (i.e., non - detachable connections) include but are not limited to conventional fixed connection methods such as hemming connection, riveting connection, bonding connection and welding connection, etc. The detachable connections include but are not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection, etc. When the specific connection method is not clearly defined, it is defaulted that at least one connection method can always be found among the existing connection methods to achieve this function, and those skilled in the art can select according to their needs. For example: for fixed connection, welding connection is selected; for detachable connection, hinge connection is selected.

[0022] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present utility model can be understood according to specific situations.

[0023] Example 1, in combination with Figures 1-5 To illustrate this embodiment, a kind of anti - fall device for the hoisting mechanism of a chain - bucket car dumper in this embodiment includes a winch 1, a bucket elevator 2, an anti - fall mechanism 3, a hoisting pulley block 4, a fixed pulley 6 and a frame 8. The winch 1 and the fixed pulley 6 are installed on the frame 8. A hoisting pulley block 4 is installed on the bucket elevator 2. The winch 1 is connected to the hoisting pulley block 4 and the fixed pulley 6 through a steel wire rope 5. An anti - fall mechanism 3 is installed on the frame 8, and the anti - fall mechanism 3 is cooperatively connected with the bucket elevator 2. A winch guard 7 is installed on the winch 1.

[0024] The first hollow tube 11 and the second hollow tube 12 of the anti-fall mechanism 3 are respectively installed on the frame 8, and the first hollow tube 11 and the second hollow tube 12 are arranged in a mirror image. The second hollow tube 12 is slidably connected with a limit slide tube 14, and blocks 9 are installed on both sides of the bucket elevator 2. When the chain bucket unloader is in operation, after the winch 1 is started, the winch 1 drives the lifting pulley block 4 installed on the bucket elevator 2 to rise or fall through the wire rope 5, thereby driving the bucket elevator 2 to rise or fall. At this time, the limit slide tube 14 is retracted in the second hollow tube 12, and the first hollow tube 11 and the second hollow tube 12 are connected. There is a gap between them, which does not affect the lifting and lowering of the bucket elevator 2. After the chain bucket unloader stops operating, the bucket elevator 2 is driven by the winch 1 to be lifted to a specified height, and the limiting slide 14 in the second hollow tube 12 is pulled out of the second hollow tube 12 and inserted into the first hollow tube 11. Blocks 9 are symmetrically arranged on both sides of the bucket elevator 2. When the limiting slide 14 is pulled out of the second hollow tube 12 and inserted into the first hollow tube 11, the limiting slide 14 is used to resist the block 9. The limiting slide 14 contacts with the block 9 and bears part of the force, thereby reducing the force on the wire rope 5 and reducing the loss of the wire rope 5.

[0025] A hydraulic cylinder 10 is also installed on the frame 8. The hydraulic rod 13 of the hydraulic cylinder 10 extends into the second hollow tube 12. The end of the hydraulic rod 13 is connected to an extension rod 15. The extension rod 15 is connected to the limiting slide tube 14 through a pin shaft 16. The hydraulic cylinder 10 controls the extension and retraction of the hydraulic rod 13 to drive the extension rod 15 to extend and retract, and controls the limiting slide tube 14 to be plugged into or retracted into the second hollow tube 12 with the first hollow tube 11.

[0026] This embodiment is only an illustrative description of the present application and does not limit its protection scope. Those skilled in the art may also make partial changes thereto, and as long as they do not exceed the spirit of the present application, they are all within the protection scope of the present application.

Claims

1. A chain bucket type unloading machine lifting mechanism anti-falling device, characterized in that: The invention comprises a winch (1), a bucket elevator (2), an anti-fall mechanism (3), a lifting pulley block (4), a fixed pulley (6) and a frame (8); the winch (1) and the fixed pulley (6) are mounted on the frame (8); the bucket elevator (2) is mounted with the lifting pulley block (4); the winch (1) is connected to the lifting pulley block (4) and the fixed pulley (6) via a steel wire rope (5); the frame (8) is mounted with the anti-fall mechanism (3); and the anti-fall mechanism (3) is cooperatively connected to the bucket elevator (2).

2. The anti-falling device of the lifting mechanism of the chain bucket unloader according to claim 1 is characterized in that: The anti-fall mechanism (3) comprises a first hollow tube (11), a second hollow tube (12) and a limit slide tube (14); the first hollow tube (11) and the second hollow tube (12) are mounted on the frame (8) in a mirror-image manner; the limit slide tube (14) is slidably connected inside the second hollow tube (12); and the limit slide tube (14) is plugged into the first hollow tube (11).

3. The anti-falling device of the lifting mechanism of the chain bucket unloader according to claim 2 is characterized in that: A hydraulic cylinder (10) is installed on the frame (8); a hydraulic rod (13) of the hydraulic cylinder (10) is inserted into the second hollow tube (12); an extension rod (15) is connected to the end of the hydraulic rod (13); the extension rod (15) extends into the limiting slide tube (14) and is connected to the limiting slide tube (14) via a pin shaft (16).

4. The anti-falling device of the lifting mechanism of the chain bucket unloader according to claim 3 is characterized in that: The bucket elevator (2) is symmetrically provided with stoppers (9), which are cooperatively connected with the limiting sliding pipe (14).

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