Novel coal mining machine roller

Abstract

The utility model discloses a novel coal mining machine roller, which relates to the technical field of coal mining machines, and comprises a roller arranged on a mechanical arm main shaft, an expansion part is arranged at one end of the roller close to a mechanical arm, a containing groove is arranged in the expansion part, a spiral blade is arranged on the outer surface of the roller, and the spiral blade is arranged in the containing groove. According to the utility model, the expansion part is arranged on the roller, and the framework oil seal is arranged through the accommodating groove, so that the diameter of the part, except the expansion part, of the roller can be smaller, and the height of the blade is increased on the premise that the diameter of the roller is the same; and the coal containing capacity and the coal collecting capacity of the roller are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a novel drum of a coal mining machine. Background Art

[0002] The traditional drum generally adopts the square hole of the drum connecting plate to match the square head, and then the connecting plate and the square head are fixed with bolts, and the square head and the output shaft are connected with splines. The Chinese utility model patent with the publication number: CN219654691U provides a new type of coal mining machine drum connection structure, which integrates the original square head and the drum into a drum assembly, cancels the bolt connection, and makes its structure simpler. Through the radial positioning of the involute spline and the rocker arm output shaft, the torque load is transmitted evenly through the connection, which is not easy to wear, and the gap between the drum and the square head is increased after the wear and tear, which causes the shearing of the first bolt. The rocker arm output shaft and the drum assembly are axially positioned by the retaining ring, the pressure cover and the second bolt, thereby avoiding over-positioning and the shearing of the first bolt when the drum rotates, reducing the failure rate and the workload of maintenance, and ensuring the continuity of coal mining production.

[0003] However, the existing coal mining machine drum has a consistent diameter, and the radial occupancy rate at the skeleton oil seal is relatively large. In order to ensure the consistency of the overall diameter of the drum, the radial occupancy rate of the drum assembly needs to be increased to the same vertical position of the skeleton oil seal. Under the premise that the drum diameter remains unchanged, this solution reduces the coal holding capacity due to the larger outer diameter of the drum ring due to the skeleton oil seal. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a novel coal mining machine drum, which solves the technical problem that the outer diameter of the drum ring is reduced and the coal holding capacity of the drum is reduced under the premise that the drum diameter remains unchanged in the prior art device.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a new type of coal mining machine drum, including a drum installed on the main shaft of a mechanical arm, an expansion portion is provided at one end of the drum close to the mechanical arm, a receiving groove is provided in the expansion portion, spiral blades are provided on the outer surface of the drum, and a coal blocking plate is installed on the mechanical arm and on one side of the drum.

[0006] Preferably, a plurality of tooth seats are fixedly provided on the spiral blade, and a pick is installed on each of the tooth seats.

[0007] Preferably, the accommodating groove is stepped.

[0008] Preferably, the outer surface of the drum located at the expansion portion is an inclined surface.

[0009] Beneficial Effects

[0010] The utility model provides a novel coal mining machine drum, which has the following beneficial effects: by arranging an expansion portion on the drum and installing a skeleton oil seal through a receiving groove, the diameter of the drum except the expansion portion can be made smaller, so that the height of the blade is increased under the premise of the same diameter of the drum, thereby improving the coal holding capacity and coal collecting capacity of the drum; by installing the pick on the tooth seat and omitting the tooth sleeve (tooth boot), the tooth seat wall thickness is larger, the blade and end plate thickness are increased, the pick and tooth seat bearing capacity is stronger, and the drum is more suitable for cutting coal with high hardness or containing interbedded gangue and faulted coal seams. After the tooth sleeve (tooth boot) is removed, the pick and tooth seat occupy less radial space of the drum, and the diameter of the drum can be made smaller, making it more suitable for use in coal mining machines with thin coal seams; the moving trajectory of coal blocks can be changed by the inclined surface, the impact of coal blocks on the mechanical arm can be reduced, and the service life of the mechanical arm can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 This is a top view of the internal structure when the drum and the main shaft are assembled;

[0013] Figure 3 It is an enlarged top view of the drum;

[0014] Figure 4 is a rear view of the drum;

[0015] Figure 5 This is an enlarged view of the tooth holder and the cutting tooth.

[0016] In the figure: 1. Robotic arm; 2. Main shaft; 3. Drum; 31. Expansion portion; 32. Accommodation groove; 33. Spiral blade; 34. Tooth seat; 35. Cutting tooth; 36. Inclined surface; 4. Coal retaining plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] See also Figure 1-5 The utility model provides a technical solution: a new type of coal mining machine drum 3, including a drum 3 installed on the main shaft 2 of a mechanical arm 1, an expansion portion 31 is provided at one end of the drum 3 close to the mechanical arm 1, and the outer surface of the drum 3 located at the expansion portion 31 is an inclined surface 36, and a receiving groove 32 is opened in the expansion portion 31, and the receiving groove 32 is stepped. The outer surface of the drum 3 is provided with spiral blades 33, and a coal blocking plate 4 is installed on the mechanical arm 1 and on one side of the drum 3.

[0019] In the present embodiment: by providing an expansion portion 31 on the drum 3 and installing a skeleton oil seal through the accommodating groove 32, the diameter of the drum 3 except for the expansion portion 31 can be made smaller, so that the height of the blades of the drum 3 is increased while the diameter is the same, thereby improving the coal holding capacity and coal collecting capacity of the drum 3. In addition, during coal mining, the coal blocks will move toward the direction of the robot arm 1 driven by the spiral blades 33, and the moving trajectory of the coal blocks can be changed by the inclined surface 36, thereby reducing the impact of the coal blocks on the robot arm 1.

[0020] As an embodiment of the present utility model, a plurality of tooth seats 34 are fixedly provided on the spiral blade 33 , and a pick 35 is installed on each tooth seat 34 .

[0021] In the present embodiment: the pick 35 and the tooth seat 34 adopt the pick 35 and the tooth seat 34 used in the tunnel boring machine. The pick 35 of the tunnel boring machine has a large shank diameter and no tooth sleeve (tooth boot). The tooth seat 34 has a thicker wall, and the thickness of the blades and the end plate is increased. In this way, the pick 35 and the tooth seat 34 have a stronger bearing capacity. The drum 3 is more suitable for cutting coal with high hardness or coal seams containing gangue and faults. After the tooth sleeve (tooth boot) is removed, the pick 35 and the tooth seat 34 occupy less radial space of the drum 3, and the diameter of the drum 3 can be made smaller, which is more suitable for use in thin coal seam coal mining machines.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel coal mining machine drum (3), comprising a drum (3) mounted on a main shaft (2) of a mechanical arm (1), characterized in that: An expansion portion (31) is provided at one end of the drum (3) close to the mechanical arm (1), a receiving groove (32) is provided in the expansion portion (31), a spiral blade (33) is provided on the outer surface of the drum (3), and a coal blocking plate (4) is installed on the mechanical arm (1) and located on one side of the drum (3).

2. A new type of coal mining machine drum (3) according to claim 1, characterized in that: A plurality of tooth seats (34) are fixedly arranged on the spiral blade (33), and a pick (35) is installed on each of the tooth seats (34).

3. A new type of coal mining machine drum (3) according to claim 1, characterized in that: The accommodating groove (32) is in a stepped shape.

4. A new type of coal mining machine drum (3) according to claim 1, characterized in that: The outer surface of the roller (3) located at the expansion portion (31) is a slope (36).

Images