Coal mining machine body connecting device and body connecting safety monitoring system

Abstract

The utility model discloses a coal mining machine body connecting device and a machine body connecting safety monitoring system, the coal mining machine body connecting device comprises a long screw rod which sequentially penetrates through a left traction part, an electric control box and a right traction part, and any end of the long screw rod is recessed inwards to form a containing cavity with a preset length; the fastener is fastened and connected to the long screw rod through the outer sides of the left traction part and the right traction part; the detection piece is embedded in the containing cavity and is close to the end part of the long screw rod, and the detection piece is arranged towards the bottom wall of the containing cavity so as to obtain current displacement information, so that the connection tightness between the long screw rod and the fastener can be judged through the displacement information; the deformation information of the long screw can be quickly judged according to the displacement information detected by the detection piece in real time, so that whether the connection tightness of the long screw and the fastener fails or not is judged. Whether the body of the coal mining machine is connected reliably or not is monitored in real time, so that the working state of the coal mining machine is adjusted in time, and the working efficiency and safety are improved.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining machine technology, specifically relating to a coal mining machine body connection device and a body connection safety monitoring system. Background Technology

[0002] The main components of a coal mining machine include the left traction unit, the middle electrical control box, and the right traction unit. It is generally tightened by several sets of long screw assemblies of different lengths. However, due to the harsh working conditions of underground coal mining machines, which are subjected to strong vibration and impact loads, the long screws connecting the machine body often become loose or even break. If the loosening or breakage of the connecting parts is not detected in time and the coal mining machine continues to operate, it can lead to major safety accidents in the coal mine.

[0003] Currently, there is a lack of real-time monitoring systems for the reliability of coal mining machine body connections. On-site, problems are mainly avoided through regular maintenance by workers. However, due to the harsh working environment underground (such as safety factors like coal wall side deviation), the level of worker experience, and the large workload and low efficiency of maintenance, there are still potential dangers such as the inability to conduct regular maintenance or the failure to detect loose body connections in time. This can lead to insufficient strength of the coal mining machine body connections and damage to the machine body, which can easily cause safety accidents and affect mine production. Utility Model Content

[0004] This utility model was developed to solve the above-mentioned problems. Its purpose is to provide a coal mining machine body connection device and a body connection safety monitoring system, which realizes real-time monitoring of whether the coal mining machine body connection is reliable, so as to adjust the working status of the coal mining machine in a timely manner and improve work efficiency and safety.

[0005] This utility model provides a coal mining machine body connecting device for fixing and connecting the left traction unit, the electrical control box, and the right traction unit of the coal mining machine. The coal mining machine body connecting device includes:

[0006] A long screw is sequentially installed through the left traction part, the electrical control box, and the right traction part, with one end of it recessed inward to form a receiving cavity of a predetermined length;

[0007] Fasteners are fastened to the long screw by the outer sides of the left and right traction portions;

[0008] A detection element is embedded in the receiving cavity and close to the end of the long screw. The detection element is positioned towards the bottom wall of the receiving cavity to obtain current displacement information, so as to determine the connection tightness between the long screw and the fastener through the displacement information.

[0009] Preferably, the receiving cavity has an opening located on the end face of the long screw.

[0010] The detection element is a displacement sensor that is fitted into the side wall of the receiving cavity.

[0011] Preferably, the fastener includes a mechanical nut and a hydraulic nut respectively disposed at both ends of the long screw.

[0012] Preferably, the receiving cavity is located at the end of the long screw corresponding to the hydraulic nut, and the length of the receiving cavity is greater than the width of the hydraulic nut along the length direction of the long screw.

[0013] Preferably, the coal mining machine body connecting device further includes:

[0014] The sensing processing center is communicatively connected to the detection component and is used to acquire the detected displacement information to determine the tightness of the connection between the long screw and the fastener.

[0015] In addition, this utility model also provides a coal mining machine body connection safety monitoring system, which includes the coal mining machine body connection device described in any one of the above.

[0016] Preferably, the number of the coal mining machine body connecting devices is multiple, and each side end of the coal mining machine body is fixedly connected to the left traction unit, the electrical control box and the right traction unit.

[0017] Preferably, the detection components in each of the coal mining machine body connection devices are respectively connected to the sensing processing center of the coal mining machine electrical control system via an independent junction box.

[0018] Preferably, the junction boxes are connected in series and transmit the detected displacement information to the sensing processing center via a bus interface.

[0019] Preferably, the sensor processing center indicates a safety fault in the body connection of the corresponding long screw through the coal mining machine's electrical control system, and controls the coal mining machine to issue a warning via voice and / or sound and light signals.

[0020] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0021] The positive and progressive effects of this utility model are as follows:

[0022] According to the coal mining machine body connection device and body connection safety monitoring system involved in this utility model, the displacement information obtained by the detection component in real time can quickly determine the deformation information of the long screw, thereby determining whether there is a fault in the connection tightness between the long screw and the fastener. In this way, the safety of the coal mining machine body connection under different conditions can be monitored in real time; it can quickly detect and determine which set of long screw and fastener components has become loose or abnormal, and then the fasteners of the abnormal long screw can be tightened in a targeted manner, reducing the workload of maintenance, improving the reliability of the body connection strength and the safety of the coal mining machine operation, protecting the safety of the coal mining machine body connection, reducing downtime, and improving the coal mining machine's uptime, safety and reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the coal mining machine body connection device in Embodiment 1 of this utility model.

[0024] Figure 2 This is a structural block diagram of the safety monitoring system connected to the coal mining machine body in Embodiment 2 of this utility model. Detailed Implementation

[0025] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0026] <Example 1>

[0027] like Figure 1 As shown in the figure, this embodiment provides a coal mining machine body connection device 100, which is applied in a coal mining machine (not shown in the figure) to achieve a fixed connection of the coal mining machine body. The coal mining machine mainly includes a left traction unit, a left rocker arm, a left drum, an electrical control box, a right rocker arm, a right traction unit, and a right drum. The left and right rocker arms are respectively installed at both ends of the left and right traction units, and the left and right drums are respectively installed on the end faces of the left and right rocker arms for coal mining. The left and right rocker arms are used to adjust the coal mining height.

[0028] In this embodiment, the coal mining machine body connecting device 100 is used to fix the left traction unit, the electrical control box, and the right traction unit of the coal mining machine, making them a single integrated structure. Specifically, as shown... Figure 1 As shown, the coal mining machine body connection device 100 includes: a long screw 10, a fastener 20, a detection component 30, and a sensor processing center.

[0029] The long screw 10 passes through the left traction part, the electrical control box and the right traction part in sequence, and one end of it is recessed inward to form a cavity 11 of a preset length.

[0030] Fastener 20 is fastened to the long screw 10 from the outside of the left and right traction parts, thereby fastening the left traction part, the electrical control box and the right traction part into a whole.

[0031] The detection element 30 is embedded in the receiving cavity 11 and positioned near the end of the long screw 10, with the detection element 30 facing the bottom wall 12 of the receiving cavity 11, thereby acquiring the current displacement information. This displacement information represents the displacement information between the detection element 30 and the bottom wall 12 detected by the detection element 30 from its own installation position. When an abnormality such as loosening or breakage occurs between the fastener 20 and the long screw 10, the long screw 10 deforms due to the coal mining action of the coal mining machine itself. Thus, the displacement information detected by the detection element 30 will also change. Therefore, the deformation information of the long screw 10 can be determined by the change in the displacement information detected by the detection element 30. In other words, the tightness of the connection between the long screw 10 and the fastener 20 can be determined by the displacement information.

[0032] In one specific embodiment, the receiving cavity 11 is formed by the end face of the long screw 10 being recessed directly inward, that is, the receiving cavity 11 has an opening 13 located on the end face of the long screw 10. In this way, the detection component 30 can be installed quickly and conveniently through the opening 13, and it is also convenient to perform maintenance and other operations on the detection component 30.

[0033] In one specific embodiment, the detection element 30 is a displacement sensor that is fitted to the side wall 14 of the receiving cavity 11, as long as it can collect displacement information relative to the bottom wall 12.

[0034] In one specific embodiment, the fastener 20 includes a mechanical nut 21 and a hydraulic nut 22 respectively disposed at both ends of the long screw 10. The mechanical nut 21 remains in a fixed screw position on the long screw 10, and its screw position is adjusted by pressing the hydraulic nut 22, thereby achieving a fastening connection.

[0035] Preferably, the receiving cavity 11 can be located at the end of the long screw 10 corresponding to the hydraulic nut 22, thereby better detecting the tightness of the connection between the hydraulic nut 22 and the long screw 10. Additionally, as... Figure 1 As shown, the length of the receiving cavity 11 (as shown in L2 in the figure) needs to be set to be greater than the width range of the hydraulic nut 22 along the length direction of the long screw 10 (as shown in L1 in the figure) in order to accurately detect the deformation information of the long screw 10.

[0036] The sensing processing center is communicatively connected to the detection component 30 to obtain the detected displacement information in order to determine the tightness of the connection between the long screw 10 and the fastener 20.

[0037] According to the coal mining machine body connection device involved in this embodiment, the displacement information obtained by the detection component in real time can quickly determine the deformation information of the long screw, thereby determining whether there is any abnormality such as loosening of the connection between the long screw and the fastener. In this way, the safety of the coal mining machine body connection under different states can be monitored in real time; the loosening of the long screw and fastener assembly can be quickly detected and determined, and the fasteners of the loose long screw can be tightened in a targeted manner, reducing the workload of maintenance, improving the reliability of the body connection strength and the safety of the coal mining machine operation, protecting the safety of the coal mining machine body connection, reducing downtime, and improving the coal mining machine's uptime, safety and reliability.

[0038] <Example 2>

[0039] like Figure 2 As shown, this embodiment provides a coal mining machine body connection safety monitoring system 200, which includes the coal mining machine body connection device 100 described in Embodiment 1. Specifically, there are multiple coal mining machine body connection devices 100, for example, four, and the number can be increased or decreased according to actual needs. Multiple coal mining machine body connection devices 100 are respectively fixedly connected to the left traction unit, the electrical control box, and the right traction unit from each side end of the coal mining machine body, making the overall structure of the coal mining machine more stable.

[0040] In this monitoring system 200, the detection element 30 in each coal mining machine body connection device 100 is communicatively connected to the coal mining machine's sensor processing center 220 via an independent junction box 210. This facilitates accurate identification of which coal mining machine body connection device 100 has a safety problem due to unreliable body connection through the junction box 210.

[0041] Multiple junction boxes 210 are connected in series and the communication bus is extended via a bus interface. The detected displacement information is transmitted to the sensing processing center 220 of the coal mining machine. The sensing processing center 220 then uses the coal mining machine's electrical control system 230 to indicate a safety fault in the connection between the long screw 10 and the fastener 20, and controls the coal mining machine to issue a warning via voice and / or audible and visual signals, facilitating timely maintenance by personnel. In this embodiment, the sensing processing center 220 of the coal mining machine is used as the sensing processing center within the coal mining machine body connection device 100. Since multiple detection elements 30 are directly connected to the sensing processing center 220, a separate sensing processing center is not required, simplifying the overall structure.

[0042] According to the body connection safety monitoring system involved in this embodiment, the displacement information obtained in real time through the detection components can quickly determine the deformation information of the long screw, thereby determining whether there are any abnormalities such as loosening of the connection between the long screw and the fasteners. In this way, the body connection safety of the coal mining machine under different states can be monitored in real time; the loosening of the long screw and fasteners can be quickly detected and determined, and the fasteners of the loose long screws can be tightened in a targeted manner, reducing the maintenance workload, improving the reliability of the body connection strength and the safety of the coal mining machine operation, protecting the body connection safety of the coal mining machine, reducing downtime, and improving the uptime, safety and reliability of the coal mining machine.

[0043] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A coal mining machine body connecting device for fixing and connecting the left traction unit, the electrical control box, and the right traction unit of the coal mining machine, characterized in that, The coal mining machine body connection device includes: A long screw is sequentially installed through the left traction part, the electrical control box, and the right traction part, with one end of it recessed inward to form a receiving cavity of a predetermined length; Fasteners are fastened to the long screw by the outer sides of the left and right traction portions; A detection element is embedded in the receiving cavity and close to the end of the long screw. The detection element is positioned towards the bottom wall of the receiving cavity to obtain current displacement information, so as to determine the connection tightness between the long screw and the fastener through the displacement information.

2. The coal mining machine body connecting device as described in claim 1, characterized in that, The receiving cavity has an opening located on the end face of the long screw. The detection element is a displacement sensor that is fitted into the side wall of the receiving cavity.

3. The coal mining machine body connecting device as described in claim 2, characterized in that, The fasteners include a mechanical nut and a hydraulic nut respectively located at both ends of the long screw.

4. The coal mining machine body connecting device as described in claim 3, characterized in that, The receiving cavity is located at the end of the long screw corresponding to the hydraulic nut, and the length of the receiving cavity is greater than the width of the hydraulic nut along the length direction of the long screw.

5. The coal mining machine body connecting device as described in claim 1, characterized in that, Also includes: The sensing processing center is communicatively connected to the detection component and is used to acquire the detected displacement information to determine the tightness of the connection between the long screw and the fastener.

6. A safety monitoring system for the connection of a coal mining machine body, characterized in that, Includes the coal mining machine body connection device as described in any one of claims 1 to 5.

7. The coal mining machine body connection safety monitoring system as described in claim 6, characterized in that, The coal mining machine body connection device consists of multiple devices, which are fixedly connected to the left traction unit, the electrical control box, and the right traction unit from each side end of the coal mining machine body.

8. The coal mining machine body connection safety monitoring system as described in claim 7, characterized in that, Each detection component in the coal mining machine body connection device is connected to the sensing processing center of the coal mining machine electrical control system via an independent junction box.

9. The safety monitoring system for the coal mining machine body connection as described in claim 8, characterized in that, The junction boxes are connected in series and transmit the detected displacement information to the sensing processing center via a bus interface.

10. The coal mining machine body connection safety monitoring system as described in claim 8, characterized in that, The sensor processing center indicates a safety fault in the body connection of the corresponding long screw through the coal mining machine's electrical control system, and controls the coal mining machine to issue a warning via voice and / or sound and light signals.

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