Cast coal mining machine roller

Abstract

The utility model discloses a cast coal mining machine roller, and relates to the technical field of coal mining machine rollers, the cast coal mining machine roller comprises a roller ring, the outer wall of the roller ring is fixedly provided with a group of spiral blades, one end of the outer wall of the roller ring is fixedly provided with an end disc, and the inner wall of the roller ring is provided with a supporting assembly; the supporting assembly comprises two supporting inner rings, a set of fixing plates are fixedly installed on the outer walls of the two supporting inner rings, a supporting plate is arranged on one side of the outer wall of each fixing plate, two springs and two telescopic columns are arranged between each fixing plate and the corresponding supporting plate, and when the barrel ring is stressed, the supporting plates are stressed to extrude the springs and the telescopic columns; the spring generates elastic deformation to provide reverse supporting force, the telescopic column assists in stable supporting, the inner wall of the roller ring is supported in the mode, the roller ring is prevented from deforming due to too large pressure, the situation that normal use of the roller is affected due to deformation of the roller ring is effectively avoided, and meanwhile welding time is shortened and labor intensity is reduced due to integral forming and pouring.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine drum technology, specifically a cast coal mining machine drum. Background Technology

[0002] The coal mining machine drum is a crucial component of the machine. Its rotation crushes the coal and pushes it onto the conveyor, fulfilling its functions of coal cutting and auxiliary loading. The drum mainly consists of a ring, spiral blades, end plates, and drive flanges. Manufacturing the drum requires meticulous step-by-step preparation of each part before final welding. For example, the ring is made by rolling steel plates into cylinders using a plate rolling machine, followed by welding the seams. The large bevels in the seams result in a significant amount of welding work. The spiral blades are made by pressing steel plates, requiring the design and fabrication of a forming mold, typically exceeding 160mm in thickness, leading to long processing times and high costs. After the mold is fabricated, it is fixed on a large press to press the blades into shape, a time-consuming and labor-intensive process. Furthermore, welding the spiral blades to the drum requires precise alignment and dimensions before secure welding, resulting in a large volume of welding and a long processing time. The water holes on the blades also need to be machined, further extending the production cycle.

[0003] In the prior art, such as the coal mining machine drum described in patent number CN220395679U, there is a drum body, an end plate, a spiral blade, cutting teeth, and an arc-shaped coal retaining plate. The end plate is welded to the end of the drum body, and the spiral blade is located behind the end plate and welded to the drum body. The cutting teeth are arranged circumferentially on both the end plate and the spiral blade. The arc-shaped coal retaining plate is arranged on one side of the spiral blade. It is set on the cutting part of the coal mining machine. The drum is driven to rotate by the power of the electric motor, and the coal cut by the cutting teeth is loaded into the scraper conveyor. The overall structure is simple, and the arc-shaped coal retaining plate arranged on one side of the spiral blade can effectively improve the coal loading effect of the spiral drum.

[0004] While the aforementioned patent can collect coal, it still has some problems. The inner wall of the drum ring lacks support, and when the drum ring is subjected to too much pressure, it may deform, thus affecting the normal use of the drum. At the same time, various parts of the drum often need to be welded for fixed connection, which undoubtedly increases the processing and production cycle of the drum. Therefore, this utility model provides a cast coal mining machine drum. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cast coal mining machine drum, which solves the problem of insufficient support on the inner wall of the drum ring. When the drum ring is subjected to excessive pressure, it may deform, thus affecting the normal use of the drum. At the same time, various parts of the drum often need to be welded for fixed connection, which undoubtedly increases the processing and production cycle of the drum.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a cast coal mining machine drum, including a drum ring, a set of spiral blades fixedly installed on the outer wall of the drum ring, an end plate fixedly installed at one end of the outer wall of the drum ring, and a support assembly provided on the inner wall of the drum ring for supporting the inner wall of the drum ring;

[0007] The support assembly includes two inner support rings. A set of fixing plates is fixedly installed on the outer walls of the two inner support rings by welding. A support plate is provided on one side of the outer wall of the fixing plate. Two springs and two telescopic columns are respectively provided between the opposite sides of the fixing plate and the support plate.

[0008] Preferably, a drive flange is fixedly installed at the other end of the outer wall of the cylindrical ring, a set of connecting holes are evenly opened through one side of the outer wall of the drive flange, and a motor connection slot is opened through one side of the outer wall of the drive flange.

[0009] Preferably, the bottom end of one set of fixing plates is fixedly installed on the bottom end of the inner wall of the cylindrical ring by welding, and the support plates are all fitted to the inner wall surface of the cylindrical ring, and two springs are respectively sleeved on the outer wall of the two telescopic columns.

[0010] Preferably, one end of each of the two telescopic columns is fixedly connected to the surface of the support plate, the other end of each of the two telescopic columns is fixedly connected to the surface of the fixing plate, one end of each of the two springs is fixedly connected to the surface of the support plate, and the other end of each of the two springs is fixedly connected to the surface of the fixing plate.

[0011] Preferably, a set of first cutting teeth is fixedly installed on one side of the outer wall of the spiral blade, and a set of first water holes are opened on one side of the outer wall of the spiral blade; a second cutting tooth is fixedly installed on one side of the outer wall of the end plate, and a second water hole is opened on one side of the outer wall of the end plate.

[0012] Preferably, the cylinder ring, spiral blade, end plate, first cutting tooth, first water hole, second water hole, second cutting tooth and drive flange are integrally cast.

[0013] Beneficial effects

[0014] This utility model provides a cast coal mining machine drum. Compared with the prior art, it has the following advantages:

[0015] 1. This cast coal mining machine drum is subjected to pressure from the reaction force of coal and rock during operation. The support plate in the support assembly fits snugly against the inner wall of the drum. When the drum is under pressure, the support plate compresses the spring and telescopic column. The spring undergoes elastic deformation, providing a counter-support force, while the telescopic column assists in stabilizing the support. This method supports the inner wall of the drum, preventing deformation due to excessive pressure. The support assembly enhances the structural stability of the drum, effectively avoiding situations where drum deformation affects normal drum operation, extending drum lifespan, reducing equipment failures and maintenance frequency, and improving the continuity and efficiency of coal mining operations.

[0016] 2. This cast coal mining machine drum features a drum ring that can be directly cast and mass-produced, avoiding the high costs of individual pressing and reducing reliance on auxiliary equipment such as presses and machining centers, thus lowering overall costs. The drum ring, spiral blades, end plate, first cutting tooth, first water hole, second water hole, second cutting tooth, and drive flange are all integrally cast. Compared to the traditional method of processing and welding each component separately, this reduces a significant number of welding processes and processing time, shortens the production cycle, and further lowers production costs. At the same time, the integral molding also improves the overall strength of the device, effectively extending the drum's service life, reducing equipment failures and maintenance frequency, and ensuring the continuous and stable operation of coal mining. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0019] Figure 3 This is a cross-sectional schematic diagram of the cylindrical ring of this utility model;

[0020] Figure 4 This is a schematic diagram of the support component of this utility model.

[0021] In the diagram: 1. Cylindrical ring; 2. Spiral blade; 3. End plate; 4. Support assembly; 41. Support plate; 42. Telescopic column; 43. Spring; 44. Fixing plate; 45. Support inner ring; 5. Drive flange; 6. Connection hole; 7. First cutting tooth; 8. First water hole; 9. Second cutting tooth; 10. Second water hole; 11. Motor connection slot. Detailed Implementation

[0022] 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.

[0023] This utility model provides two technical solutions:

[0024] Figures 1-4 The first embodiment is shown: a cast coal mining machine drum, including a drum ring 1, a set of spiral blades 2 fixedly installed on the outer wall of the drum ring 1, an end plate 3 fixedly installed at one end of the outer wall of the drum ring 1, and a support assembly 4 provided on the inner wall of the drum ring 1 for supporting the inner wall of the drum ring 1.

[0025] The support assembly 4 includes two inner support rings 45. A set of fixing plates 44 are fixedly installed on the outer walls of the two inner support rings 45 by welding. The inner support rings 45 can support the fixing plates 44 and improve the compressive strength of the fixing plates 44. A support plate 41 is provided on one side of the outer wall of the fixing plate 44. Two springs 43 and two telescopic columns 42 are respectively provided between the opposite sides of the fixing plate 44 and the support plate 41.

[0026] A drive flange 5 is fixedly installed on the other end of the outer wall of the cylindrical ring 1. A set of connecting holes 6 are evenly opened through one side of the outer wall of the drive flange 5. A motor connection slot 11 is opened through one side of the outer wall of the drive flange 5. The output shaft of the motor can be inserted into the motor connection slot 11. Then, the device is fixedly installed through the drive flange 5 and the connecting holes 6. At this time, the rotation of the motor can drive the cylindrical ring 1 to rotate.

[0027] The bottom end of a set of fixing plates 44 is fixedly installed on the bottom end of the inner wall of the cylindrical ring 1 by welding. The fixing plates 44 are set with appropriate size so that the fixing plates 44 can pass through the motor connection slot 11 and be welded to the bottom end of the inner wall of the cylindrical ring 1, so that the output shaft of the motor will not come into contact with it. A set of support plates 41 are all fitted to the inner wall surface of the cylindrical ring 1. Two springs 43 are respectively sleeved on the outer wall of the two telescopic columns 42.

[0028] Figures 1-4The second embodiment is shown, and its main difference from the first embodiment is that: one end of the two telescopic columns 42 is fixedly connected to the surface of the support plate 41, and the other end of the two telescopic columns 42 is fixedly connected to the surface of the fixed plate 44; one end of the two springs 43 is fixedly connected to the surface of the support plate 41, and the other end of the two springs 43 is fixedly connected to the surface of the fixed plate 44. The springs 43 have good elasticity and can undergo elastic deformation when impacted, absorbing and storing part of the impact energy; the telescopic columns 42 can further buffer the impact force by their own telescopic movement in conjunction with the springs 43 during the deformation process. Through buffering and shock absorption and adaptive adjustment of support force, the telescopic columns 42 and springs 43 reduce the stress borne by the entire drum structure, avoid damage to the drum ring 1 due to excessive local stress, extend the service life of the drum ring 1, reduce the frequency of equipment maintenance and replacement, and lower operating costs.

[0029] A set of first cutting teeth 7 is fixedly installed on one side of the outer wall of the spiral blade 2, and a set of first water holes 8 are opened on one side of the outer wall of the spiral blade 2. A second cutting tooth 9 is fixedly installed on one side of the outer wall of the end plate 3, and a second water hole 10 is opened on one side of the outer wall of the end plate 3. An annular water groove is provided inside the cylinder ring 1, and a water inlet is provided, which can communicate with the set of first water holes 8 and second water holes 10 and provide cooling water, so that cooling water can flow out of the first water holes 8 and second water holes 10, thereby reducing the temperature of the drum surface, keeping the drum temperature within a reasonable range, and maintaining the structural stability and mechanical performance of the drum.

[0030] The drum ring 1, spiral blade 2, end plate 3, first cutting tooth 7, first water hole 8, second water hole 10, second cutting tooth 9, and drive flange 5 are integrally cast, eliminating the need for welding of the drum ring 1, end plate 3, spiral blade 2, and drive flange 5. This significantly shortens the production cycle, reduces labor intensity, and lowers production costs. It also allows the drum ring 1 to be directly cast without the need for pressing, thus shortening the production cycle and reducing production costs. At the same time, integral casting also improves the overall strength of the device, effectively extending the service life of the drum, reducing equipment failures and maintenance frequency, and ensuring the continuous and stable operation of coal mining.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] During operation, the motor connection slot 11 is connected to the output shaft of the coal mining machine motor, and then the device is fixedly installed through the drive flange 5 and the connection hole 6. Power is transmitted to the drum ring 1 through the drive flange 5, and the drum ring 1 drives the spiral blades 2 and the end plate 3 to rotate. The first cutting tooth 7 on the spiral blade 2 and the second cutting tooth 9 on the end plate 3 crush the coal during rotation. The crushed coal is pushed onto the conveyor by the spiral blades 2, realizing coal cutting and auxiliary coal loading. When the coal mining machine is working, the drum ring 1 will be subjected to pressure such as the reaction force of coal and rock. The support plate 41 in the support assembly 4 is in contact with the inner wall of the drum ring 1. When the drum ring 1 is under pressure, the support plate 41 is compressed by the spring 43 and the telescopic column 42. The spring 43 generates elastic deformation to provide reverse support force, and the telescopic column 42 assists in stabilizing support. In this way, the inner wall of the drum ring 1 is supported to prevent the drum ring 1 from deforming due to excessive pressure, thereby improving the service life of the device.

[0033] 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.

[0034] 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 cast coal mining machine drum, comprising a drum ring (1), wherein a set of spiral blades (2) are fixedly installed on the outer wall of the drum ring (1), and an end plate (3) is fixedly installed at one end of the outer wall of the drum ring (1), characterized in that: The inner wall of the cylindrical ring (1) is provided with a support assembly (4) for supporting the inner wall of the cylindrical ring (1); The support assembly (4) includes two inner support rings (45). A set of fixing plates (44) are fixedly installed on the outer walls of the two inner support rings (45) by welding. A support plate (41) is provided on one side of the outer wall of the fixing plate (44). Two springs (43) and two telescopic columns (42) are respectively provided between the opposite sides of the fixing plate (44) and the support plate (41).

2. A cast coal mining machine drum according to claim 1, characterized in that: A drive flange (5) is fixedly installed on the other end of the outer wall of the cylindrical ring (1). A set of connecting holes (6) are evenly opened through one side of the outer wall of the drive flange (5), and a motor connection slot (11) is opened through one side of the outer wall of the drive flange (5).

3. A cast coal mining machine drum according to claim 1, characterized in that: The bottom end of a set of fixed plates (44) is fixedly installed on the bottom end of the inner wall of the cylindrical ring (1) by welding. A set of support plates (41) are all fitted to the inner wall surface of the cylindrical ring (1). Two springs (43) are respectively sleeved on the outer wall of the two telescopic columns (42).

4. A cast coal mining machine drum according to claim 1, characterized in that: One end of each of the two telescopic columns (42) is fixedly connected to the surface of the support plate (41), and the other end of each of the two telescopic columns (42) is fixedly connected to the surface of the fixing plate (44). One end of each of the two springs (43) is fixedly connected to the surface of the support plate (41), and the other end of each of the two springs (43) is fixedly connected to the surface of the fixing plate (44).

5. A cast coal mining machine drum according to claim 2, characterized in that: A set of first cutting teeth (7) is fixedly installed on one side of the outer wall of the spiral blade (2), and a set of first water holes (8) are opened on one side of the outer wall of the spiral blade (2). A second cutting tooth (9) is fixedly installed on one side of the outer wall of the end plate (3), and a second water hole (10) is opened on one side of the outer wall of the end plate (3).

6. A cast coal mining machine drum according to claim 5, characterized in that: The cylinder ring (1), spiral blade (2), end plate (3), first cutting tooth (7), first water hole (8), second water hole (10), second cutting tooth (9) and drive flange (5) are integrally cast.

Images