Overload protection buffer device for traction unit of coal mining machine

Abstract

This utility model discloses an overload protection buffer device for the traction unit of a coal mining machine, including a receiving frame. Buffer mechanisms for buffering traction force are provided on both sides of the inner side of the receiving frame. A traction mechanism for adjusting the position of the traction rope for buffer protection is provided on the outer surface of the receiving frame. Each traction mechanism and buffer mechanism includes a spring buffer, a connecting plate, an air bladder, and an air pump. The spring buffer is fixedly connected to both sides of the inner wall of the receiving frame. A connecting plate is fixedly connected to the side of the spring buffer near the central axis of the receiving frame. The air bladder is fixedly connected to the connecting plate near the central axis of the receiving frame to buffer the force of the traction rope. The air pump is connected to one side of the air bladder via a three-way pipe to supply gas to the air bladder. This utility model has a simple structure and reasonable design, which helps to slow down the release speed of impact force, improves the practicality of the device, and enhances the overload buffer protection function of the device, further improving its usability.

Description

Technical Field

[0001] This utility model relates to the technical field of overload protection buffer device for the traction unit of a coal mining machine, specifically an overload protection buffer device for the traction unit of a coal mining machine. Background Technology

[0002] The overload protection buffer device for the traction unit of a coal mining machine is a safety protection device used in the traction unit of a coal mining machine (such as the track drive system of a coal mining machine). It is mainly used to prevent equipment damage and improve the safety and reliability of the equipment when the machine is subjected to overload or impact.

[0003] The shortcomings of existing technology: Most overload protection buffer devices for the traction unit of coal mining machines currently use pressure sensors to monitor the pressure of the hydraulic system of the traction unit in real time. When the pressure exceeds the preset threshold, the control system will trigger the overload protection action. The buffer device can slowly release or absorb the excessive load through hydraulic buffer. However, the hydraulic system involves multiple components such as pumps, valves, and pipelines, making the system relatively complex. Installation and maintenance are more troublesome, and hydraulic oil leakage may cause equipment failure, affect work efficiency, and even damage the environment. Utility Model Content

[0004] The purpose of this utility model is to provide an overload protection buffer device for the traction unit of a coal mining machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an overload protection buffer device for the traction unit of a coal mining machine, comprising a receiving frame, wherein buffer mechanisms for buffering traction force are provided on both sides of the inner side of the receiving frame, and a traction mechanism for adjusting the position of the traction rope for buffer protection is provided on the outer surface of the receiving frame. The buffer mechanism includes: Several spring buffers are fixedly connected to both sides of the inner side wall of the receiving frame, and a connecting plate is fixedly connected to the side of the spring buffer closest to the central axis of the receiving frame. Several airbags are fixedly connected to the side of the connecting plate near the central axis of the support frame to buffer the force of the traction rope; Several air pumps are connected to one side of the airbag via a three-way pipe to deliver gas to the airbag.

[0006] Preferably, the traction mechanism includes: Several hydraulic rods are arranged on both sides of the receiving frame for adjusting the position of the traction rope; Several control frames, which are fixedly connected to the output end of the hydraulic rod; Rollers, which are fixedly connected to the inner side wall of the control frame for limiting the traction rope; Several pressure sensors are electrically connected to the inside of the connecting plate via power lines.

[0007] Preferably, both sides of the receiving frame are fixedly connected to a fixing seat, and one side of the fixing seat is installed at the end of the hydraulic rod.

[0008] Preferably, the surface of the fixing seat is threaded with bolts A for fixing the hydraulic rod.

[0009] Preferably, a mounting plate is fixedly connected to one side of the receiving frame, and a rectangular groove is formed on the surface of the mounting plate.

[0010] Preferably, both sides of the mounting plate are fixedly connected to fixing blocks, and bolts B are threadedly connected to the surface of the fixing blocks for fixing the support frame.

[0011] Preferably, the surface of the traction mechanism is coated with anti-rust paint to prevent the traction mechanism from rusting.

[0012] Preferably, a circular hole is provided on one side of the receiving frame for the limiting tee pipe to pass through the receiving frame and connect to the air pump.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. An overload protection buffer device for the traction unit of a coal mining machine, the buffer mechanism includes a spring buffer, a connecting plate, an air bladder and an air pump. When the hydraulic cylinder controls the output of the traction force, the sensor installed at the hydraulic cylinder monitors the hydraulic system in real time after overload and transmits the signal to the control panel. The control panel drives the air pump to transmit gas to the air bladder through a three-way pipe, causing the air bladder to expand and thus clamp the traction rope to generate resistance. The spring buffer further increases the resistance of the air bladder, which helps to slow down the release speed of the impact force and improve the practicality of the device. 2. The overload protection buffer device for the traction unit of a coal mining machine includes a hydraulic rod, rollers, and several pressure sensors. When the air bladder is squeezed, the pressure sensors transmit signals to the control panel. The control panel controls the hydraulic rod to move the control frame, and the rollers move together with the control frame, causing the position of the traction rope on the rollers to change, thereby increasing the resistance and enhancing the overload buffer protection function of the device, further improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front perspective view of the connecting plate and airbag assembly / disassembly of this utility model; Figure 3 This is a front perspective view of the traction mechanism of this utility model; Figure 4This is a perspective view of the side of the support frame and mounting plate of this utility model.

[0015] In the diagram: 1. Receiving frame; 2. Buffer mechanism; 201. Spring buffer; 202. Connecting plate; 203. Airbag; 204. Air pump; 3. Traction mechanism; 301. Hydraulic rod; 302. Control frame; 303. Roller; 304. Pressure sensor; 4. Fixing seat; 5. Bolt A; 6. Mounting plate; 7. Rectangular groove; 8. Fixing block; 9. Bolt B. Detailed Implementation

[0016] 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.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0020] Example 1 Please see Figures 1-4As shown, the present invention provides a technical solution for an overload protection buffer device for the traction unit of a coal mining machine: It includes a receiving frame 1, with buffer mechanisms 2 for buffering traction force on both sides of the inner side of the receiving frame 1, and a traction mechanism 3 for adjusting the position of the traction rope for buffer protection on the outer surface of the receiving frame 1. The traction mechanism 3 and the buffer mechanism 2 include a spring buffer 201, a connecting plate 202, an air bladder 203, and an air pump 204. The spring buffer 201 is fixedly connected to both sides of the inner wall of the receiving frame 1, and the connecting plate 202 is fixedly connected to the side of the spring buffer 201 closest to the central axis of the receiving frame 1. The air bladder 203 is fixedly connected to... On the side of the connecting plate 202 near the central axis of the receiving frame 1, the force of the traction rope is buffered. The air pump 204 is connected to one side of the airbag 203 through a three-way pipe to supply gas to the airbag 203. When the hydraulic cylinder controls the output of the traction force, the sensor installed at the hydraulic cylinder monitors the hydraulic system in real time after overload and transmits the signal to the control panel. The control panel drives the air pump 204 to transmit gas to the airbag 203 through the three-way pipe, causing the airbag 203 to expand and thus clamp the traction rope to generate resistance. The resistance of the airbag 203 is further increased by the spring buffer 201, which helps to slow down the release speed of the impact force and improve the practicality of the device.

[0021] The traction mechanism 3 includes a hydraulic rod 301, a roller 303, and several pressure sensors 304. The hydraulic rod 301 is set on both sides of the receiving frame 1 to adjust the position of the traction rope. The control frame 302 is fixedly connected to the output end of the hydraulic rod 301. The roller 303 is fixedly connected to the inner wall of the control frame 302 to limit the traction rope. The pressure sensors 304 are electrically connected to the inside of the connecting plate 202 via power lines. When the airbag 203 is squeezed, the pressure sensor 304 transmits a signal to the control panel. The control panel controls the hydraulic rod 301 to move the control frame 302. The roller 303 moves with the control frame 302, causing the position of the traction rope on the roller 303 to change, thereby increasing the resistance and enhancing the overload buffer protection function of the device, further improving the practicality of the device.

[0022] Both sides of the receiving frame 1 are fixedly connected to the fixing seat 4, and one side of the fixing seat 4 is installed at the end of the hydraulic rod 301.

[0023] The surface of the fixed base 4 is threaded with bolts A5 for fixing the hydraulic rod 301.

[0024] A mounting plate 6 is fixedly connected to one side of the receiving frame 1, and a rectangular groove 7 is provided on the surface of the mounting plate 6.

[0025] Both sides of the mounting plate 6 are fixedly connected to fixing blocks 8, and bolts B9 are threaded on the surface of the fixing blocks 8 to fix the support frame 1.

[0026] The surface of the traction mechanism 3 is coated with anti-rust paint to prevent the traction mechanism 3 from rusting.

[0027] A round hole is provided on one side of the receiving frame 1 for the limiting tee pipe to pass through and connect to the air pump 204.

[0028] In this device, the mounting plate 6 is attached to the surface of the installation position, and the rotating bolt B9 passes through the fixing block 8 and is inserted into the installation position, so that the device is fixed in the installation position. When the device is in use, the hydraulic cylinder controls the output of the traction force. The sensor installed at the hydraulic cylinder monitors the hydraulic system in real time. When the system is overloaded, the sensor transmits the signal to the control panel. The control panel drives the air pump 204 to transmit gas to the airbag 203 through the three-way pipe, so that the airbag 203 expands and increases, thereby clamping the traction rope and generating resistance. The resistance of the airbag 203 is further increased by the spring buffer 201. When the airbag 203 is squeezed, the pressure sensor 304 is squeezed and transmits the signal to the control panel. The control panel operates the hydraulic rod 301 to move the control frame 302. The roller 303 moves with the control frame 302, so that the position of the traction rope on the roller 303 changes, thereby increasing the resistance.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mining machine traction unit overload protection buffer device, comprising a bearing frame (1), characterized in that: Both sides of the inner side of the receiving frame (1) are provided with buffering mechanisms (2) for buffering traction force, and the outer surface of the receiving frame (1) is provided with a traction mechanism (3) for adjusting the position of the traction rope for buffering protection. The traction mechanism (3) and the buffering mechanism (2) include: Several spring buffers (201) are fixedly connected to both sides of the inner wall of the support frame (1). A connecting plate (202) is fixedly connected to the side of the spring buffer (201) near the central axis of the support frame (1). Several airbags (203) are fixedly connected to the side of the connecting plate (202) near the central axis of the support frame (1) to buffer the force of the traction rope; Several air pumps (204) are connected to one side of the airbag (203) via a three-way pipe to deliver gas to the airbag (203).

2. The coal mining machine traction unit overload protection cushioning device of claim 1, wherein: The traction mechanism (3) includes: Several hydraulic rods (301) are provided on both sides of the receiving frame (1) for adjusting the position of the traction rope; Several control frames (302) are fixedly connected to the output end of the hydraulic rod (301); Roller (303), which is fixedly connected to the inner wall of the control frame (302) for limiting the traction rope; Several pressure sensors (304) are electrically connected to the inside of the connecting plate (202) via power lines.

3. The overload protection buffer device for the traction unit of a coal mining machine according to claim 1, characterized in that: Both sides of the receiving frame (1) are fixedly connected to a fixing seat (4), and one side of the fixing seat (4) is installed at the end of the hydraulic rod (301).

4. The coal mining machine haulage over load protection cushioning device according to claim 3, characterized in that: The surface of the fixed seat (4) is threaded with bolts A (5) for fixing the hydraulic rod (301).

5. The coal mining machine haulage over load protection cushioning device as claimed in claim 1, wherein: A mounting plate (6) is fixedly connected to one side of the receiving frame (1), and a rectangular groove (7) is provided on the surface of the mounting plate (6).

6. A shearer loader traction unit overload protection cushioning device according to claim 5 wherein: Both sides of the mounting plate (6) are fixedly connected to fixing blocks (8), and the surface of the fixing blocks (8) is threaded with bolts B (9) for fixing the support frame (1).

7. The overload protection buffer device for the traction unit of a coal mining machine according to claim 1, characterized in that: The surface of the traction mechanism (3) is coated with anti-rust paint to prevent the traction mechanism (3) from rusting.

8. The coal mining machine haulage over load protection cushioning device of claim 1 wherein: A round hole is provided on one side of the receiving frame (1) for the limiting tee pipe to pass through the receiving frame (1) and connect to the air pump (204).

Images