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

Abstract

The invention 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 an accommodating 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] The invention belongs to the technical field of coal mining machines, and in particular relates to a coal mining machine body connection device and a body connection safety monitoring system. Background Art

[0002] The body of the coal mining machine mainly includes the left traction part, the middle electric control box, and the right traction part, which are generally tightened by several groups of long screw assemblies of different lengths; however, due to the harsh working conditions of the coal mining machine during underground mining and the strong vibration and impact loads, the long screw connecting the body often loosens or even breaks. If the looseness or breakage of the connecting parts is not discovered in time and the coal mining machine continues to run, it may cause major safety accidents in coal mines in severe cases.

[0003] At present, there is a lack of real-time monitoring system for the reliability of the coal mining machine body connection. Problems are mainly avoided on site by workers performing regular maintenance. However, due to the harsh working environment underground (such as safety factors such as the side deviation of the coal wall), the workers' experience level, and the large workload and low efficiency of maintenance, there are still a series of problems such as failure to conduct regular maintenance or failure to promptly discover the potential dangers of loose body connections, resulting in insufficient strength of the coal mining machine body connection and damage to the body, which are prone to safety accidents and affect the mine's production. Summary of the invention

[0004] The present invention is made to solve the above-mentioned problem, and its purpose is to provide a coal mining machine body connection device and a body connection safety monitoring system, which can realize real-time monitoring of whether the coal mining machine body connection is reliable, so as to timely adjust the working state of the coal mining machine and improve work efficiency and safety.

[0005] The present invention provides a coal mining machine body connection device, which is used to fix and connect the left traction part, the electric control box and the right traction part of the coal mining machine. The coal mining machine body connection device includes:

[0006] A long screw rod is sequentially arranged to penetrate the left traction part, the electric control box and the right traction part, and any end of the long screw rod is recessed inward to form a receiving cavity of a preset length;

[0007] A fastener, fastened and connected to the long screw rod from the outer sides of the left traction part and the right traction part;

[0008] A detection member is embedded in the accommodating cavity and close to the end of the long screw. The detection member is arranged toward the bottom wall of the accommodating cavity to obtain current displacement information, so as to judge the connection tightness between the long screw and the fastener through the displacement information.

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

[0010] The detection member is a displacement sensor that is arranged in close contact with the side wall of the accommodating cavity.

[0011] Preferably, the fastener comprises a mechanical nut and a hydraulic nut respectively arranged at two ends of the long screw.

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

[0013] Preferably, the coal mining machine body connection device further comprises:

[0014] A sensor processing center is connected to the detection member for obtaining the detected displacement information to determine the tightness of the connection between the long screw and the fastener.

[0015] In addition, the present invention also provides a coal mining machine body connection safety monitoring system, which includes any one of the coal mining machine body connection devices described above.

[0016] Preferably, there are multiple connecting devices for the coal mining machine body, and the left traction part, the electric control box and the right traction part are fixedly connected by the side ends of the coal mining machine body.

[0017] Preferably, each detection element in the coal mining machine body connection device is communicatively connected to the sensor processing center of the coal mining machine electronic control system through an independent junction box.

[0018] Preferably, the junction boxes are connected in series with each other and transmit the detected displacement information to the sensor processing center through a bus interface series connection.

[0019] Preferably, the sensor processing center indicates the corresponding safety failure of the long screw body connection through the coal mining machine electronic control system, and controls the coal mining machine to issue voice and / or sound and light signals for early warning.

[0020] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0021] The positive and progressive effects of the present invention are:

[0022] According to the coal mining machine body connection device and the body connection safety monitoring system involved in the present invention, the displacement information obtained by the real-time detection of the detection part can quickly determine the deformation information of the long screw, thereby determining whether the connection tightness of the long screw and the fastener is faulty. In this way, the body connection safety of the coal mining machine in different states can be monitored in real time; which group of long screws and fastener components are loose or abnormal can be quickly detected and determined, and the fasteners of the abnormal 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, protecting the safety of the coal mining machine body connection, reducing downtime, and improving the start-up rate, safety and reliability of the coal mining machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the coal mining machine body connection device in Example 1 of the present invention.

[0024] Figure 2 It is a structural block diagram of the coal mining machine body connection safety monitoring system in Example 2 of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0026] <Example 1>

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

[0028] The coal mining machine body connection device 100 of this embodiment is used to fix and connect the left traction part, the electric control box and the right traction part of the coal mining machine to form an integral structure. Figure 1 As shown, the coal mining machine body connection device 100 includes: a long screw 10, a fastener 20, a detection member 30 and a sensor processing center.

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

[0030] The fastener 20 is fastened to the long screw 10 from the outer sides of the left traction part and the right traction part, thereby fastening the left traction part, the electric control box and the right traction part into a whole.

[0031] The detection member 30 is embedded in the accommodating cavity 11 and is arranged near the end of the long screw 10. The detection member 30 is arranged toward the bottom wall 12 of the accommodating cavity 11, so as to obtain the current displacement information. The displacement information indicates that the detection member 30 detects the displacement information between the bottom wall 12 from its own installation position. When an abnormality such as looseness or breakage occurs between the fastener 20 and the long screw 10, the long screw 10 is deformed due to the coal mining action of the coal mining machine itself, so that the displacement information detected by the detection member 30 will also change. Then, the deformation information of the long screw 10 can be judged by the change of the displacement information detected by the detection member 30, that is, the connection tightness between the long screw 10 and the fastener 20 can be judged by the displacement information.

[0032] In a specific embodiment, the accommodating chamber 11 is formed by directly recessing the end surface of the long screw 10, that is, the accommodating chamber 11 has an opening 13 located on the end surface of the long screw 10, so that the detection component 30 can be quickly and conveniently installed through the opening 13, and it is also convenient to perform repair and maintenance operations on the detection component 30.

[0033] In a specific embodiment, the detection member 30 is a displacement sensor that is disposed in close contact with the side wall 14 of the accommodating cavity 11 , and it only needs to be able to collect displacement information relative to the bottom wall 12 .

[0034] In a 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 screwing position of the mechanical nut 21 on the long screw 10 remains stationary, and the screwing position of the hydraulic nut 22 is adjusted by pressing the hydraulic nut 22, thereby achieving a fastened connection.

[0035] Preferably, the accommodating chamber 11 can be provided at the end of the long screw 10 corresponding to the hydraulic nut 22, so as to better detect the connection and fastening condition between the hydraulic nut 22 and the long screw 10. Figure 1 As shown, the length of the accommodating cavity 11 (shown as L2 in the figure) needs to be set to be larger than the width range of the hydraulic nut 22 along the length direction of the long screw rod 10 (shown as L1 in the figure) in order to accurately detect the deformation information of the long screw rod 10.

[0036] The sensor processing center is in communication connection with the detection member 30 for acquiring the detected displacement information 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 real-time detection of the detection part can quickly determine the deformation information of the long screw, thereby determining whether the connection tightness of the long screw and the fastener is loose or other abnormalities. In this way, the body connection safety of the coal mining machine in different states can be monitored in real time; by quickly detecting and determining which group of long screws and fastener components are loose, 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, protecting the safety of the coal mining machine body connection, reducing downtime, and improving the coal mining machine start-up rate, 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 Example 1. Specifically, the number of the coal mining machine body connection devices 100 is multiple, for example, four, and of course, it can also be increased or reduced according to actual needs. Multiple coal mining machine body connection devices 100 are respectively fixedly connected to the left traction part, the electric control box and the right traction part by each side end of the coal mining machine body, so that the overall structure of the coal mining machine is more stable.

[0040] In the monitoring system 200, the detection element 30 in each coal mining machine body connection device 100 is respectively connected to the coal mining machine sensor processing center 220 through an independent junction box 210. In this way, the junction box 210 can be used to accurately identify which coal mining machine body connection device 100 has a safety problem of unreliable body connection.

[0041] Multiple junction boxes 210 are connected in series with each other, and the communication bus is extended in series through the bus interface, and the detected displacement information is transmitted to the sensor processing center 220 of the coal mining machine, so that the sensor processing center 220 indicates the corresponding fuselage connection safety failure between the long screw 10 and the fastener 20 through the electrical control system 230 of the coal mining machine, and controls the coal mining machine to send voice and / or sound and light signals for early warning, so that maintenance personnel can perform maintenance in time. In this embodiment, the sensor processing center 220 of the coal mining machine is used as the sensor processing center in the coal mining machine fuselage connection device 100, that is, multiple detection components 30 are directly connected to the sensor processing center 220 of the coal mining machine for communication, so there is no need to set up a separate sensor processing center, simplifying the overall structure.

[0042] According to the machine body connection safety monitoring system involved in this embodiment, similarly, the displacement information obtained by the real-time detection of the detection member can quickly determine the deformation information of the long screw, thereby determining whether the connection tightness of the long screw and the fastener is loose or other abnormalities. In this way, the machine body connection safety of the coal mining machine in different states can be monitored in real time; by quickly detecting and determining which group of long screws and fasteners are loose, the fasteners of the loose long screws can be tightened in a targeted manner, reducing the maintenance workload, improving the reliability of the machine body connection strength and the safety of the coal mining machine, protecting the safety of the coal mining machine machine body connection, reducing downtime, and improving the start-up rate, safety and reliability of the coal mining machine.

[0043] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A coal mining machine body connection device, used for fixedly connecting the left traction part, the electric control box and the right traction part of the coal mining machine, characterized in that: The coal mining machine body connection device comprises: A long screw rod is sequentially arranged to penetrate the left traction part, the electric control box and the right traction part, and any end of the long screw rod is recessed inward to form a receiving cavity of a preset length; A fastener, fastened and connected to the long screw rod from the outer sides of the left traction part and the right traction part; A detection member is embedded in the accommodating cavity and close to the end of the long screw. The detection member is arranged toward the bottom wall of the accommodating cavity to obtain current displacement information, so as to judge the connection tightness between the long screw and the fastener through the displacement information.

2. The coal mining machine body connection device according to claim 1, characterized in that: The accommodating cavity has an opening located on the end surface of the long screw. The detection member is a displacement sensor that is arranged in close contact with the side wall of the accommodating cavity.

3. The coal mining machine body connection device according to claim 2, characterized in that: The fastener comprises a mechanical nut and a hydraulic nut respectively arranged at two ends of the long screw.

4. The coal mining machine body connection device according to claim 3, characterized in that: The accommodating cavity is arranged at the end of the long screw rod corresponding to the hydraulic nut, and the length of the accommodating cavity is greater than the width range of the hydraulic nut along the length direction of the long screw rod.

5. The coal mining machine body connection device according to claim 1, characterized in that: Also includes: A sensor processing center is connected to the detection member for obtaining the detected displacement information to determine the tightness of the connection between the long screw and the fastener.

6. A coal mining machine body connection safety monitoring system, characterized in that: It comprises 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 according to claim 6, characterized in that: There are multiple connecting devices for the coal mining machine body, and the left traction part, the electric control box and the right traction part are fixedly connected by the side ends of the coal mining machine body.

8. The coal mining machine body connection safety monitoring system according to claim 7, characterized in that: Each detection element in the coal mining machine body connection device is respectively connected to the sensor processing center of the coal mining machine electrical control system through an independent junction box.

9. The coal mining machine body connection safety monitoring system according to claim 8, characterized in that: The junction boxes are connected in series with each other and transmit the detected displacement information to the sensor processing center through a bus interface in series.

10. The coal mining machine body connection safety monitoring system according to claim 8, characterized in that: The sensor processing center indicates the corresponding safety failure of the long screw body connection through the coal mining machine electronic control system, and controls the coal mining machine to issue voice and / or sound and light signals for early warning.

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