Maintenance-free chain wheel group of coal mining machine

Abstract

The utility model discloses a coal mining machine maintenance-free chain wheel group which comprises a chain wheel ring, a sleeve is arranged in the chain wheel ring, the outer surface of the sleeve is fixedly connected with a group of supporting plates, the side face, away from the sleeve, of each supporting plate is fixedly connected with the inner wall of the chain wheel ring, and a sealing bearing is fixedly installed on the inner wall of the sleeve. A connecting rod is fixedly connected to the inner ring of the sealing bearing, a through hole is formed in the outer surface of the connecting rod, and a connecting cylinder is arranged behind the chain wheel ring. According to the device, the sealing bearing, the connecting cylinder, the threaded cylinder, the connecting rod, the through hole and the threaded rod are arranged, the threaded rod is conveniently inserted into the through hole while moving in the threaded cylinder through cooperation of the threaded rod and the threaded cylinder, the connecting rod is conveniently limited according to cooperation of the threaded rod and the threaded cylinder, and workers can conveniently install the chain wheel; and through cooperation of the sealing bearing, the connecting rod and the sleeve, the chain wheel ring can rotate conveniently during use.

Description

Technical Field

[0001] The utility model relates to the field of coal mining machines, in particular to a maintenance-free sprocket group of coal mining machines. Background Art

[0002] The coal mining machine is a large and complex system integrating mechanical, electrical and hydraulic functions. It works in a harsh environment. If a failure occurs, the entire coal mining operation will be interrupted, causing huge economic losses.

[0003] At present, the sprockets of coal mining machines usually only need to be lubricated and do not require maintenance by staff. However, the installation speed is slow, which increases the labor of staff and is not conducive to current use. Improvements are needed. To this end, we propose a maintenance-free sprocket group for coal mining machines to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a maintenance-free sprocket assembly for a coal mining machine to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A maintenance-free sprocket assembly for a coal mining machine comprises a sprocket ring, a sleeve is provided inside the sprocket ring, a group of support plates are fixedly connected to the outer surface of the sleeve, a side of each support plate away from the sleeve is fixedly connected to the inner wall of the sprocket ring, a sealed bearing is fixedly installed on the inner wall of the sleeve, a connecting rod is fixedly connected to the inner ring of the sealed bearing, a through hole is opened on the outer surface of the connecting rod, a connecting cylinder is provided at the rear of the sprocket ring, a threaded cylinder is fixedly inlaid on the outer surface of the connecting cylinder, and a threaded rod is threadedly connected to the inner wall of the threaded cylinder.

[0007] In a further embodiment, a model mark is provided on the front of the sprocket ring, and the back side of the model mark is fixedly connected to the front side of the sprocket ring.

[0008] In a further embodiment, the connecting rod is matched with the connecting cylinder, and the through hole is matched with the threaded rod.

[0009] In a further embodiment, a turning handle is provided behind the sprocket ring, and the bottom surface of the turning handle is fixedly connected to the top end of the threaded rod.

[0010] In a further embodiment, a limiting ring is sleeved on the outer surface of the connecting rod, and the inner wall of the limiting ring is fixedly connected to the outer surface of the connecting rod.

[0011] In a further embodiment, the number of the support plates in a group is at least three.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device is provided with a sealed bearing, a connecting tube, a threaded tube, a connecting rod, a through hole and a threaded rod. The cooperation between the threaded rod and the threaded tube facilitates the threaded rod to be inserted into the through hole while moving inside the threaded tube. The cooperation between the two facilitates the position limiting of the connecting rod and the installation of the sprocket by the staff. The cooperation between the sealed bearing, the connecting rod and the sleeve facilitates the rotation of the sprocket ring during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the maintenance-free sprocket group of the coal mining machine;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the side view of the sprocket of the maintenance-free sprocket group of the coal mining machine;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of a top view of a sprocket ring of a maintenance-free sprocket assembly for a coal mining machine;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the rear view of the sprocket ring of the maintenance-free sprocket assembly of the coal mining machine.

[0018] In the figure: 1. model mark; 2. sprocket ring; 3. connecting rod; 4. sealed bearing; 5. threaded rod; 6. turning handle; 7. sleeve; 8. support plate; 9. limiting ring; 10. threaded tube; 11. connecting tube; 12. through hole. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 In the utility model, a maintenance-free sprocket group for a coal mining machine includes a sprocket ring 2, a sleeve 7 is provided inside the sprocket ring 2, a group of support plates 8 are fixedly connected to the outer surface of the sleeve 7, and a side of each support plate 8 away from the sleeve 7 is fixedly connected to the inner wall of the sprocket ring 2, a sealed bearing 4 is fixedly installed on the inner wall of the sleeve 7, a connecting rod 3 is fixedly connected to the inner ring of the sealed bearing 4, a through hole 12 is opened on the outer surface of the connecting rod 3, a connecting tube 11 is provided at the rear of the sprocket ring 2, a threaded tube 10 is fixedly inlaid on the outer surface of the connecting tube 11, and a threaded rod 5 is threadedly connected to the inner wall of the threaded tube 10.

[0023] A model mark 1 is provided in front of the sprocket ring 2, and the back of the model mark 1 is fixedly connected to the front of the sprocket ring 2. The model mark 1 is used to facilitate the staff to understand the model of the sprocket. The connecting rod 3 is adapted to the connecting tube 11, and the through hole 12 is adapted to the threaded rod 5. A turning handle 6 is provided at the rear of the sprocket ring 2. The bottom surface of the turning handle 6 is fixedly connected to the top of the threaded rod 5. The turning handle 6 is used to facilitate the threaded rod 5 to rotate.

[0024] The outer surface of the connecting rod 3 is sleeved with a limiting ring 9, the inner wall of the limiting ring 9 is fixedly connected to the outer surface of the connecting rod 3, and the limiting ring 9 is used to limit the connecting tube 11. The number of a group of support plates 8 is at least three.

[0025] The working principle of the utility model is:

[0026] When the staff uses it, they first find the sprocket with the appropriate signal through the model mark 1, and then drive the connecting rod 3 to be inserted into the connecting tube 11 through the cooperation of the sprocket ring 2, the sleeve 7 and the sealed bearing 4. At this time, according to the rotation of the handle 6, the threaded rod 5 is driven to move inside the threaded tube 10, and one end of the threaded rod 5 is extended to the inside of the through hole 12. At this time, through the cooperation of the through hole 12 and the threaded rod 5, the connecting rod 3 can be limited, and the installation of the sprocket is completed.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A maintenance-free sprocket assembly for a coal mining machine, characterized in that: The invention comprises a sprocket wheel (2), wherein a sleeve (7) is provided inside the sprocket wheel (2), a group of support plates (8) are fixedly connected to the outer surface of the sleeve (7), and a side of each support plate (8) away from the sleeve (7) is fixedly connected to the inner wall of the sprocket wheel (2), a sealed bearing (4) is fixedly installed on the inner wall of the sleeve (7), the inner ring of the sealed bearing (4) is fixedly connected to a connecting rod (3), a through hole (12) is provided on the outer surface of the connecting rod (3), a connecting tube (11) is provided at the rear of the sprocket wheel (2), a threaded tube (10) is fixedly embedded on the outer surface of the connecting tube (11), and a threaded rod (5) is threadedly connected to the inner wall of the threaded tube (10).

2. A maintenance-free sprocket assembly for a coal mining machine according to claim 1, characterized in that: A model mark (1) is provided in front of the sprocket wheel ring (2), and the back side of the model mark (1) is fixedly connected to the front side of the sprocket wheel ring (2).

3. A maintenance-free sprocket assembly for a coal mining machine according to claim 1, characterized in that: The connecting rod (3) is matched with the connecting cylinder (11), and the through hole (12) is matched with the threaded rod (5).

4. A maintenance-free sprocket assembly for a coal mining machine according to claim 1, characterized in that: A turning handle (6) is provided behind the sprocket wheel (2), and the bottom surface of the turning handle (6) is fixedly connected to the top end of the threaded rod (5).

5. A maintenance-free sprocket assembly for a coal mining machine according to claim 1, characterized in that: The outer surface of the connecting rod (3) is sleeved with a limiting ring (9), and the inner wall of the limiting ring (9) is fixedly connected to the outer surface of the connecting rod (3).

6. A maintenance-free sprocket assembly for a coal mining machine according to claim 1, characterized in that: The number of the support plates (8) in a group is at least three.

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