An adaptive flight chain dynamic stabilizing device

Abstract

The utility model discloses a kind of self-adapting scraper chain dynamic stabilizing chain device, it is related to coal mine mechanical engineering technical field, including rack, the left and right ends of rack are symmetrically installed with chain pressing assembly, chain pressing assembly includes bottom plate and the side plate symmetrically installed in the left and right sides of bottom plate;Rack is equipped with the lengthwise hole extending along the length of rack, chain pressing assembly can move left and right along lengthwise hole;The utility model is compact in structure, accurate in adjustment, high in degree of automation, can improve coal mine scraper conveyor operating performance, guarantee coal mine safety production.

Description

Technical Field

[0001] This utility model relates to the field of coal mine machinery engineering technology, specifically to an adaptive scraper chain dynamic chain stabilization device. Background Technology

[0002] In coal mining operations, scraper conveyors, as core equipment for coal transportation, bear the important task of transporting mined coal from the working face to subsequent processing stages. However, due to the complex underground working conditions, existing scraper conveyors frequently experience a "chain drifting" phenomenon during operation, where the scraper chain detaches from the bottom of the central trough and becomes suspended in the air. The specific causes are as follows:

[0003] Complex coal seam conditions: The thickness of the coal seam changes frequently. During the mining process, the unevenness of the coal seam thickness causes the load on the scraper conveyor to change instantaneously, resulting in uneven stress on the scraper chain and causing chain slippage.

[0004] Material characteristics affect: When transporting wet and sticky materials, the materials tend to accumulate in the middle of the trough, increasing the running resistance of the scraper chain and changing the force distribution on the chain, causing the chain to partially detach from the bottom of the trough. In addition, uneven material accumulation can also cause load imbalance, further aggravating the chain drift problem.

[0005] Equipment-related factors: After long-term use, scraper chains may experience wear and elongation, leading to chain slack. During operation, the chain may not be able to tightly adhere to the bottom of the central trough, resulting in chain slippage.

[0006] The existence of the chain phenomenon has brought about many serious consequences:

[0007] Increased equipment wear: The floating scraper chain generates abnormal friction with the side wall of the central trough and the edge of the trough, which accelerates the wear of the chain and the trough, significantly shortens the service life of the equipment, and increases the cost of equipment maintenance and replacement.

[0008] Reduced conveying efficiency: After the scraper chain floats up, its effective conveying capacity for materials decreases, resulting in reduced material conveying efficiency and affecting the overall production progress of coal mining operations; in severe cases, it may also cause serious accidents such as chain jamming and chain breakage, resulting in long-term downtime and huge economic losses to coal mining enterprises.

[0009] Currently, the solutions to the problem of chain slippage mostly rely on manual periodic adjustment of the tensioning device or shutdown for maintenance. This method not only has low adjustment accuracy and is difficult to adapt to the changes in chain slippage under the dynamic operating conditions of the scraper conveyor, but also requires frequent manual intervention, which increases the workload and safety risks of operators and cannot meet the needs of efficient and safe production in coal mines.

[0010] Therefore, developing a compact, precise, and highly automated chain drift control device and adjustment method is crucial for improving the operating performance of coal mine scraper conveyors and ensuring safe production in coal mines. Utility Model Content

[0011] The purpose of this invention is to provide an adaptive scraper chain dynamic stabilization device, which has a compact structure, precise adjustment, and high degree of automation, and can improve the operating performance of coal mine scraper conveyors and ensure safe production in coal mines.

[0012] This utility model includes a frame, with chain pressing assemblies symmetrically installed at the left and right ends of the frame. The chain pressing assembly includes a base plate and side plates symmetrically installed on the left and right sides of the base plate. The frame is provided with elongated holes extending along the length of the frame, and the chain pressing assembly can move left and right along the elongated holes.

[0013] Preferably, the frame includes an upper plate, a middle plate, and a lower plate connected in sequence, with the upper plate arranged horizontally, the middle plate arranged perpendicular to the upper plate, and the lower plate arranged inclined to the horizontal plane.

[0014] Preferably, elongated holes are provided on the middle plate of the frame, and the number of elongated holes is not less than 4, symmetrically distributed on the left and right sides of the frame.

[0015] Preferably, the side plate of the chain clamping assembly is perpendicular to the bottom plate; the side plate is provided with mounting holes for mounting the side plate.

[0016] Preferably, the internal structure of the pressure chain assembly is provided with an elastic buffer structure, which includes a spring buffer unit and a rubber shock-absorbing pad.

[0017] Preferably, it also includes a detection feedback module, which includes a tension sensor and a displacement sensor, which are distributed at designated positions on the scraper chain; the monitoring feedback module transmits the collected tension values ​​and offset data at various points on the scraper chain to the control unit in real time.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. Efficiently manage chain drifting issues: By monitoring the scraper chain status in real time through the monitoring and feedback module, combined with the intelligent judgment of the control unit and the precise adjustment of the chain pressing component, the chain drifting problem under various working conditions can be solved quickly and effectively, significantly improving the stability of scraper conveyor operation;

[0020] 2. Reduce equipment wear: The elastic buffer structure of the pressure chain assembly can effectively absorb the impact load of the chain, reduce abnormal friction between the chain and the trough, reduce the degree of equipment wear, extend the service life of key components such as scraper chain and central trough, and reduce equipment maintenance and replacement costs.

[0021] 3. Improve conveying efficiency: Promptly resolve chain slippage issues to ensure the scraper chain is always in good operating condition, improve the stability and efficiency of material conveying, avoid downtime caused by chain jamming, chain breakage and other accidents due to chain slippage, and ensure the continuous and efficient operation of coal mining.

[0022] 4. Easy installation and strong adaptability: The device adopts a modular design and can be directly installed on the scraper chain of the existing scraper conveyor without major modifications to the main structure, making installation simple and quick; at the same time, through the elongated holes of the frame and the left and right adjustment function of the pressure chain assembly, it can adapt to different models and working conditions of scraper conveyors, and has wide applicability.

[0023] 5. High degree of automation: The intelligent dynamic adaptive adjustment method realizes the automated monitoring, judgment and management of chain drifting problems, reduces manual intervention, reduces the workload and safety risks of operators, and improves the automation level and management efficiency of coal mine production. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an adaptive scraper chain dynamic chain stabilizing device according to the present invention;

[0025] Figure 2 This is a schematic diagram of the frame structure;

[0026] Figure 3 This is a schematic diagram of the chain clamping assembly.

[0027] In the diagram: 1. Frame; 101. Top plate; 102. Middle plate; 103. Bottom plate; 104. Long strip hole; 2. Chain press assembly; 201. Bottom plate; 202. Side plate; 203. Mounting hole. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] The orientations mentioned in this specification are based on the orientation of the adaptive scraper chain dynamic stabilizing device of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0030] like Figures 1 to 3As shown, an adaptive scraper chain dynamic chain stabilization device includes a frame 1, which is installed on both sides of the scraper chain of a scraper conveyor. Chain pressing assemblies 2 are symmetrically installed at both ends of the frame 1. Each chain pressing assembly 2 includes a base plate 201 and side plates 202 symmetrically installed on the left and right sides of the base plate 201. The frame 1 has elongated holes 104 extending along its length. These elongated holes 104 are located on the middle plate 102 of the frame 1, and there are at least four such holes symmetrically distributed on the left and right sides of the frame 1. The chain pressing assemblies 2 can move left and right along the elongated holes 104. The design of the elongated holes 104 allows for fine-tuning of the device during installation according to actual working conditions, ensuring installation accuracy. Simultaneously, the elongated holes 104 also provide space for the left and right adjustment of the chain pressing assemblies 2. The frame 1 is securely connected to the main structure of the scraper conveyor by bolts, providing reliable installation support for the entire chain drift control device.

[0031] The frame 1 includes an upper plate 101, a middle plate 102 and a lower plate 103 connected in sequence. The upper plate 101 is set horizontally, the middle plate 102 is set perpendicular to the upper plate 101, and the lower plate 103 is set inclined to the horizontal plane. During installation, the lower plate 103 is aligned with the inclined direction of the scraper chain and is set to fit the inclined slope of the scraper chain, making the structure more reasonable.

[0032] The side plate 202 of the chain pressing assembly 2 is vertically arranged between the side plate 202 and the bottom plate 201. The side plate 202 is provided with mounting holes 203 for installing the chain pressing assembly 2. The two side plates 202 are located at one end of the bottom plate 201. Preferably, in this embodiment, the chain pressing assembly 2 is made of wear-resistant cast iron and is located below the frame 1. It is detachably connected to the frame 1 by bolts, which facilitates installation, disassembly and maintenance. The chain pressing assembly 2 can be adjusted left and right along the elongated hole 104 of the frame 1 assembly. By adjusting its position, it can accurately adapt to the chain floating state of the scraper chain under different working conditions, apply appropriate pressure to the floating chain, and make it re-fit the bottom surface of the central groove.

[0033] Furthermore, the internal structure of the chain pressing assembly 2 is provided with an elastic buffer structure (not shown in the figure). The elastic buffer structure includes a spring buffer unit and a rubber shock-absorbing pad. The spring buffer unit can effectively absorb the impact load generated during the operation of the scraper chain and reduce the instantaneous force change of the chain. The rubber shock-absorbing pad can reduce the rigid friction between the chain pressing assembly 2 and the scraper chain, thereby reducing the vibration and noise during the operation of the equipment.

[0034] During use, after completing the installation of each component, the intelligent dynamic adaptive chain drift control device for coal mine scraper conveyors is debugged as a whole. The scraper conveyor is started, and the equipment is run under different working conditions (such as transporting different types of materials, simulating changes in coal seam thickness, etc.) to observe the device's effect on controlling the chain drift problem. Based on the actual operating conditions, the position and pressure of the dynamic chain pressing component 2, as well as the adjustment parameters of the control unit, are further adjusted to optimize the device's performance and ensure that it can stably and efficiently solve the scraper chain drift problem. At the same time, the device is regularly maintained and serviced, and the connection tightness and wear of each component are checked. Severely worn components are replaced in a timely manner to ensure the long-term reliable operation of the device.

[0035] It also includes a detection feedback module, which comprises tension sensors and displacement sensors. The tension sensors and displacement sensors are distributed at designated locations on the scraper chain, mainly at the head, tail, and middle sections where chain drift is prone to occur. The tension sensors are used to monitor the tension changes of the scraper chain in real time, while the displacement sensors are used to detect the offset of the scraper chain relative to the bottom surface of the middle trough. The detection feedback module transmits the collected tension values ​​and offset data at various points on the scraper chain to the control unit in real time. The control unit determines whether the scraper chain is drifting based on preset thresholds and controls the adjustment action of the chain pressing component 2 according to the degree of chain drift, thereby achieving intelligent and precise management of the chain drift problem.

[0036] The specific adjustment method is as follows:

[0037] System initialization: After the device is installed and debugged, the tension sensor and displacement sensor of the monitoring feedback module are calibrated, the tension and offset thresholds for normal operation of the scraper chain are set, and the relevant parameters are input into the control unit;

[0038] Real-time monitoring: During the operation of the scraper conveyor, the tension sensor and displacement sensor of the monitoring feedback module collect the tension and offset data of the scraper chain in real time and transmit the data to the control unit;

[0039] Chain drift detection: The control unit analyzes and processes the received data. When it detects that the tension of the scraper chain is lower or higher than the preset threshold range and the offset exceeds the normal range, it determines that the scraper chain has drifted.

[0040] Dynamic adjustment: The control unit calculates the adjustment parameters (such as adjustment position and pressure) required by the dynamic chain pressing component 2 based on the degree of chain drift, and sends an adjustment command to the dynamic chain pressing component 2; after receiving the command, the dynamic chain pressing component 2 applies appropriate pressure to the drifting scraper chain by adjusting the left and right positions and the pressure of the internal elastic buffer structure, so that it re-adheres to the bottom surface of the middle trough, thus completing the chain drift control.

[0041] Feedback optimization: During the adjustment process, the monitoring feedback module continuously monitors the status of the scraper chain and feeds back the adjusted tension and offset data to the control unit. The control unit judges the adjustment effect based on the feedback data. If the expected effect is not achieved, the adjustment parameters of the dynamic chain pressing component 2 are further adjusted until the scraper chain returns to normal operation.

[0042] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An adaptive scraper chain dynamic chain stabilizing device, characterized in that: The machine includes a frame (1), and a chain press assembly (2) is symmetrically installed at the left and right ends of the frame (1). The chain press assembly (2) includes a base plate (201) and side plates (202) symmetrically installed on the left and right sides of the base plate (201). The frame (1) is provided with an elongated hole (104) extending along the length direction of the frame (1), and the chain press assembly (2) can move left and right along the elongated hole (104).

2. The adaptive scraper chain dynamic stabilizing device as described in claim 1, characterized in that: The frame (1) includes an upper plate (101), a middle plate (102) and a lower plate (103) connected in sequence. The upper plate (101) is horizontally arranged, the middle plate (102) is perpendicular to the upper plate (101) and the lower plate (103) is inclined to the horizontal plane.

3. The adaptive scraper chain dynamic stabilizing device as described in claim 2, characterized in that: The elongated holes (104) are provided on the middle plate (102) of the frame (1), and there are no less than 4 elongated holes (104), which are symmetrically distributed on the left and right sides of the frame (1).

4. The adaptive scraper chain dynamic stabilizing device as described in claim 1, characterized in that: The side plate (202) of the chain press assembly (2) is perpendicularly arranged between the bottom plate (201); the side plate (202) is provided with mounting holes (203) for mounting the chain press assembly (2).

5. The adaptive scraper chain dynamic stabilizing device as described in claim 1, characterized in that: The internal structure of the pressure chain assembly (2) is provided with an elastic buffer structure, which includes a spring buffer unit and a rubber shock-absorbing pad.

6. The adaptive scraper chain dynamic stabilizing device as described in claim 1, characterized in that: It also includes a detection feedback module, which includes a tension sensor and a displacement sensor, which are distributed at designated positions on the scraper chain; the detection feedback module transmits the collected tension values ​​and offset data at various points on the scraper chain to the control unit in real time.

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