A coal cutter counterweight device
Patent Information
- Application Number
- CN202522134001.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-10
AI Technical Summary
然而，薄煤层地质条件往往更为复杂，其中，煤层中普遍存在且分布不规则的夹矸，采煤机割到矸石时冲击负荷较大，机身振动大，严重时出现机身上抬以及与刮板机脱离的情况；同时，淋水环境也会放大振动对设备密封和可靠性的破坏作用，进一步加剧了这些问题的严重性和复杂性
本实用新型提供了一种采煤机配重装置，其一方面能够增加整机重量，降低采煤机振动；另一方面还能够不影响机身上方盖板的拆卸；此外，该配重装置还设有排水通道，当工作面淋水较大时，能有效排水，避免内部积水，向机身箱体内部渗漏，造成隐患；通过设置多组排水通道，能够满足不同机身倾角状态下的排水要求。
Smart Images
Figure CN224871256U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of coal mining equipment, and in particular relates to a counterweight device for a coal mining machine. Background Technology
[0002] With the continuous mining of coal resources, medium and thick coal seams are becoming increasingly scarce, and efficient mining of thin coal seams has become an important way to ensure coal supply. However, the geological conditions of thin coal seams are often more complex. Among them, interbedded rock is common and irregularly distributed. When the coal mining machine cuts through the rock, the impact load is large, and the machine body vibrates greatly. In severe cases, the machine body may lift up and detach from the scraper conveyor. At the same time, the water-spraying environment amplifies the destructive effect of vibration on equipment sealing and reliability, further exacerbating the severity and complexity of these problems. Utility Model Content
[0003] The purpose of this invention is to provide a counterweight device for a coal mining machine to solve the problems existing in the prior art.
[0004] To achieve the above objectives, this utility model provides a counterweight device for a coal mining machine, including a counterweight plate, which is fixed to the body of the coal mining machine by connecting screws; the counterweight plate is provided with a plurality of cover plates, each cover plate being correspondingly provided with a protective plate assembly of the coal mining machine; and a drainage channel is provided on the contact surface between the counterweight plate and the coal mining machine.
[0005] Optionally, it also includes a positioning pin, which is fixed to the body of the coal mining machine, and the counterweight plate is configured to cooperate with the positioning pin.
[0006] Optionally, the counterweight plate is provided with several drainage outlets, which are connected to the drainage channel. The accumulated water is discharged through the corresponding drainage outlet according to the working status of the coal mining machine.
[0007] Optionally, the drainage channel is a rectangular drainage channel.
[0008] The technical effects of this utility model are as follows: This utility model provides a counterweight device for a coal mining machine, which can increase the overall weight of the machine and reduce its vibration. It can also remove the cover plate on the machine body without affecting its disassembly. In addition, the counterweight device is equipped with a drainage channel, which can effectively drain water when there is a lot of water on the working face, preventing internal water accumulation and leakage into the machine body box, thus avoiding potential hazards. By setting multiple drainage channels, the drainage requirements under different machine body tilt angles can be met. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram showing the connection between the counterweight device and the coal mining machine in an embodiment of this utility model; Figure 2 This is a schematic diagram of the counterweight plate in an embodiment of the present utility model; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point BB; Figure 4 for Figure 3 A magnified view of the rectangular drainage channel at point I in the middle.
[0011] Labeling: 1. Coal mining machine body; 2. Connecting screw; 3. Locating pin; 4. Cover plate; 5. Guard plate assembly; 6. Counterweight plate. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0013] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.
[0014] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only. The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.
[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0017] like Figure 1 - Figure 4 As shown, this embodiment provides a counterweight device for a coal mining machine, including a counterweight plate 6, which is fixed to the body of the coal mining machine by connecting screws 2; a plurality of cover plates 4 are provided on the counterweight plate 6, and each cover plate 4 is correspondingly provided with a protective plate assembly 5 of the coal mining machine; a drainage channel is provided on the contact surface between the counterweight plate 6 and the coal mining machine.
[0018] This embodiment increases the overall weight of the coal mining machine by adding a counterweight device, thereby reducing vibration. It also effectively drains water when there is significant water seepage from the working face. The specific structure of the counterweight device provided in this embodiment is as follows: Figure 1 As shown, it specifically includes: The coal mining machine body 1 has a protective plate assembly 5 installed on its upper part. The protective plate assembly 5 includes several protective plates for functions such as oiling and maintenance. The counterweight plate 6 is installed on the body 1 of the coal mining machine by connecting screws 2. It is used to increase the overall weight of the coal mining machine and reduce the vibration of the coal mining machine.
[0019] The structure of counterweight plate 6 is as follows Figure 2 As shown, it includes a cover plate 4 and a drainage channel. The cover plate 4 is used to disassemble the protective plate assembly 5. When the coal mining machine body 1 is equipped with multiple sets of protective plate assemblies 5, multiple sets of cover plates 4 should be correspondingly installed on the counterweight plate 6.
[0020] To prevent excessive water accumulation due to heavy water spray at the working face, which could then leak into the machine body, a rectangular drainage channel is provided on the contact surface between the counterweight plate 6 and the coal mining machine body 1. Figure 4 This is a magnified view of a rectangular groove.
[0021] To accommodate the drainage needs of the coal mining machine along the working face and strike angles, multiple drainage channels, such as n1, n2, and n3, are opened at the bottom of the counterweight plate 66. When the coal mining machine is working downwards, accumulated water can be discharged through channel n3; when the coal mining machine is working downwards, accumulated water can be discharged through channel n1. This achieves the goal of both reducing the vibration of the entire machine and timely draining accumulated water.
[0022] Several positioning pins 3 are provided between the counterweight plate 6 and the coal mining machine body 1. The positioning pins 3 connect the counterweight plate 6 and the coal mining machine body 1 and are used to prevent the connecting screws 2 from being cut off when the counterweight plate 6 is subjected to a large lateral force.
[0023] In summary, this embodiment provides a counterweight device for a coal mining machine, which can increase the overall weight of the machine and reduce its vibration. Furthermore, it can also be used without affecting the removal of the upper protective plate on the machine body. In addition, the counterweight device is equipped with drainage channels, which can effectively drain water when there is significant water spray at the working face, preventing internal water accumulation and leakage into the machine body housing, thus avoiding potential hazards. By setting multiple drainage channels, the drainage requirements under different machine body tilt angles can be met.
[0024] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A counterweight device for a coal mining machine, characterized in that, It includes a counterweight plate (6), which is fixed to the body of the coal mining machine by connecting screws (2); a number of cover plates (4) are provided on the counterweight plate (6), and each cover plate (4) is correspondingly provided with the protective plate assembly (5) of the coal mining machine; a drainage channel is provided on the contact surface between the counterweight plate (6) and the coal mining machine.
2. The apparatus according to claim 1, characterized in that, It also includes a positioning pin (3), which is fixed to the body of the coal mining machine, and the counterweight plate (6) is configured in conjunction with the positioning pin (3).
3. The apparatus according to claim 1, characterized in that, The counterweight plate (6) is provided with several drainage outlets, which are connected to the drainage channel. The accumulated water is discharged through the corresponding drainage outlet according to the working status of the coal mining machine.
4. The apparatus according to claim 1, characterized in that, The drainage channel is a rectangular drainage channel.