Strain acquisition device and hydraulic support

Abstract

The strain acquisition device comprises a strain sensor, a magnetic attraction mounting seat, a laser sensor and an audible and visual alarm, the strain sensor comprises a contact point and a non-contact point, and the contact point is used for being in contact with the hydraulic support to acquire strain information of the hydraulic support; the magnetic attraction mounting seat is connected with the non-contact point, and the magnetic attraction mounting seat has magnetism and is used for magnetically attracting and fixing the strain sensor on the hydraulic support; the laser sensor is arranged at the bottom of the strain sensor, and the laser sensor is used for measuring the distance between the strain sensor and the ground; the audible and visual alarm is electrically connected with the laser sensor and is used for giving an alarm when the distance measured by the laser sensor is smaller than a preset distance. The strain acquisition device facilitates installation and arrangement of the strain sensor, avoids damage to the hydraulic support body, facilitates timely discovery of the risk of falling of the strain sensor by workers, and ensures monitoring continuity.

Description

Technical Field

[0001] This utility model relates to the field of strain acquisition technology, specifically to a strain acquisition device and a hydraulic support. Background Technology

[0002] Hydraulic supports are widely used in the mining industry, especially in fully mechanized coal mining. As an indispensable supporting equipment, hydraulic supports can effectively support the roof, thereby ensuring the safe operation of coal mining.

[0003] During the operation of a hydraulic support, it is necessary to use strain acquisition devices to obtain minute strain changes on the hydraulic support. Then, the obtained strain changes can be used to analyze the pressure supported by the hydraulic support, the safety status of the hydraulic support, etc.

[0004] However, the installation process of existing strain gauges typically involves steps such as grinding the surface of the hydraulic support, attaching patches, applying protective adhesive, and connecting wiring. The overall installation process is overly cumbersome and can cause physical damage to the hydraulic support itself. Furthermore, existing strain gauges pose a risk of falling during use, and if they do fall, staff may not be able to detect it in time. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, this utility model embodiment proposes a strain acquisition device, which facilitates the installation and arrangement of strain sensors, avoids damage to the hydraulic support body, and also makes it easier for staff to detect the risk of strain sensors falling off in a timely manner, ensuring the continuity of monitoring.

[0007] This utility model embodiment also proposes a hydraulic support including the above-mentioned strain acquisition device.

[0008] The strain acquisition device according to this utility model embodiment includes:

[0009] A strain sensor, comprising contact points and non-contact points, wherein the contact points are used to contact a hydraulic support to acquire strain information of the hydraulic support;

[0010] A magnetic mounting base is connected to the non-contact point, and the magnetic mounting base is magnetic and used to magnetically fix the strain sensor to the hydraulic support.

[0011] A laser sensor is disposed at the bottom of the strain sensor and is used to measure the distance between the strain sensor and the ground;

[0012] An audible and visual alarm is electrically connected to the laser sensor and is used to sound an alarm when the distance measured by the laser sensor is less than a preset distance.

[0013] In some embodiments, a housing is included, which covers the outer periphery of the strain sensor, and the housing has a first hole for exposing the contact point and a second hole for exposing the non-contact point, the magnetic mounting base being fitted into the second hole.

[0014] In some embodiments, the housing is provided with heat dissipation holes, which extend toward the strain sensor.

[0015] In some embodiments, a dustproof mesh is provided inside the heat dissipation holes.

[0016] In some embodiments, the surface of the housing is provided with shock-absorbing foam, which covers the edges or corners of the housing.

[0017] In some embodiments, including:

[0018] The processor, the strain sensor, the laser sensor, and the audible and visual alarm are all electrically connected to the processor;

[0019] A terminal, electrically connected to the processor, is used to display the strain information.

[0020] In some embodiments, the system further includes a wireless communication module and a wireless gateway, wherein the wireless communication module is electrically connected to the strain sensor and the laser sensor, and the wireless gateway is electrically connected between the wireless communication module and the processor.

[0021] In some embodiments, a positioning module is further included, which is connected to the processor and correspondingly configured with respect to the strain sensor, and the positioning module is used to position the hydraulic support monitored by the strain sensor.

[0022] In some embodiments, it also includes:

[0023] A power module is provided, and both the strain sensor and the laser sensor are connected to the power module.

[0024] A power detection module is connected to both the power module and the processor, and the power detection module is used to detect the power level of the power module.

[0025] The hydraulic support of this utility model embodiment includes the strain acquisition device as described in any of the above embodiments.

[0026] Beneficial effects: The strain acquisition device and hydraulic support of this utility model embodiment facilitate the installation and arrangement of strain sensors, avoid damage to the hydraulic support body, and also make it easier for staff to detect the risk of strain sensors falling off in a timely manner, thus ensuring the continuity of monitoring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the internal structure of the strain acquisition device according to an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the overall structure of the strain acquisition device according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the outer casing of the strain acquisition device according to an embodiment of the present invention.

[0030] Figure label:

[0031] 1. Strain sensor; 2. Magnetic mounting base; 3. Laser sensor; 4. Processor; 5. Terminal; 6. Audible and visual alarm; 7. Wireless communication module; 8. Wireless gateway; 9. Housing; 10. Heat dissipation holes; 11. Dustproof mesh; 12. Positioning module; 13. Power module; 14. Power detection module; 15. Shock-absorbing foam. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment discloses a portable strain acquisition device, which includes: a strain sensor 1, a magnetic mounting base 2, a laser sensor 3, a terminal 5, an audible and visual alarm 6, a housing 9, a positioning module 12, a power module 13, etc.

[0034] The strain sensor 1 includes contact points and non-contact points. The contact points can be elastic sensitive elements, etc., and can be exposed from the housing of the strain sensor and directly contact the hydraulic support during use, thus meeting the requirements for contact-type strain monitoring. The non-contact points can be other parts of the housing of the strain sensor.

[0035] Specifically, strain sensor 1 is mounted on a hydraulic support to collect the strain state of the hydraulic support and obtain state information (strain information); wherein, the state information includes at least the state changes on the hydraulic support and the magnitude of the force applied by the hydraulic support. In addition, a housing 9 is mounted on the outside of strain sensor 1, and heat dissipation holes 10 are provided on the housing 9.

[0036] Because the environment is harsh during mining or tunnel excavation, to prevent falling rocks or other objects from damaging the strain sensor 1 and rendering it unusable, a housing 9 is installed on the outside of the strain sensor 1. This effectively protects the strain sensor 1. At the same time, during the operation of the strain sensor 1, a large amount of heat may be generated. To prevent the housing 9 from affecting heat dissipation, multiple heat dissipation holes 10 are opened on the housing 9. This effectively dissipates heat from the strain sensor 1 and extends its service life.

[0037] While protecting the strain sensor 1, excessive dust may exist during mining or tunnel excavation. If too much dust covers the strain sensor 1, it may cause the strain sensor 1 to fail to achieve high sensitivity, resulting in errors in the final state information. To effectively avoid errors in the state information, a dustproof net 11 can be installed in the direction of the heat dissipation hole 10 toward the strain sensor 1. This can effectively prevent dust from entering the housing 9 and thus prevent dust from falling onto the strain sensor 1.

[0038] To avoid cumbersome steps during the installation of strain sensor 1 and effectively prevent physical damage to the hydraulic support body, a magnetic mounting base 2 is used to magnetically attach strain sensor 1 to the surface of the hydraulic support. The magnetic mounting base 2 can be fixedly mounted on strain sensor 1. A hole extending outward from the magnetic mounting base 2 is provided on the housing 9; this hole serves as a second hole through which the magnetic mounting base passes. The housing can also have a first hole for the aforementioned contact point to be exposed and extend to the outside, thus meeting the requirement that the contact point be exposed and in direct contact with the hydraulic support.

[0039] In other embodiments, the magnetic mounting base and the non-contact point can also be indirectly connected. That is, the magnetic mounting base 2 can be fixed on the housing 9, so that the housing 9 is magnetically attracted to the hydraulic support through the magnetic mounting base, while the non-contact point of the strain sensor 1 is fixed on the inner side of the housing 9 corresponding to the magnetic mounting base.

[0040] By magnetically attaching the strain sensor 1 to the hydraulic support using the magnetic mounting base 2, the cumbersome steps involved in installing the strain sensor 1 can be effectively avoided, and physical damage to the hydraulic support body can also be effectively prevented.

[0041] Furthermore, due to the possibility of weak magnetic attraction or falling debris onto the outer casing 9, the strain sensor 1 may fall off, and staff may not be able to detect it in time. To prevent the strain sensor module from slipping off the hydraulic support, a laser sensor 3 is installed on the strain sensor 1. The laser sensor 3 emits a laser beam perpendicularly to the ground to detect the height of the strain sensor above the ground, obtaining height information. By measuring the height of the strain sensor 1 above the ground using the laser sensor 3, if the height is lower than a preset value, it indicates that the strain sensor 1 is at risk of detaching from the hydraulic support. Staff can then take timely action based on this height information, effectively ensuring the proper installation and positioning of the strain sensor 1 and preventing it from falling off undetected.

[0042] Because the magnetic attraction may be weak or stones may hit the housing 9, the strain sensor 1 may fall off the hydraulic support and be damaged. Therefore, shock-absorbing sponge 15 is installed on the surface of the housing 9. During the fall of the housing 9 and the strain sensor 1, the shock-absorbing sponge 15 can play a buffering role, thereby reducing the possibility of the strain sensor 1 being damaged and effectively protecting the strain sensor 1.

[0043] Reference Figure 2 The strain acquisition device is also equipped with a processor 4, which is connected to the strain sensor 1 and the laser sensor 3. The processor 4 is also connected to a terminal 5. The processor 4 receives the status information and the height information and transmits them to the terminal 5, where they are stored and displayed. The terminal 5 may include an electronic display screen, which can be used to display the status information and the height information.

[0044] Due to the complex internal environment and numerous large machines involved in mining or tunnel excavation, and the possibility of very long excavation paths, a wireless communication module 7 can be installed to connect both the strain sensor 1 and the laser sensor 3 to the processor 4. This reduces the need for wiring and enables long-distance transmission, effectively realizing the transmission of collected information.

[0045] When the wireless signal transmitted by the wireless communication module 7 is connected to the processor 4, a wireless gateway 8 needs to be set between the wireless communication module 7 and the processor 4 so that the wireless signal can be converted into a wired signal and connected to the processor 4 through the RS485 bus interface, so that the processor 4 can accurately receive the above-mentioned altitude information and status information.

[0046] The strain acquisition device is also equipped with an audible and visual alarm 6, which is connected to the processor 4. The processor 4 controls the activation and deactivation of the audible and visual alarm 6 based on the height information and the status information. If the status information is abnormal or the height information is lower than a preset value, the processor 4 will control the audible and visual alarm to sound an alarm based on the height information and status information, thereby reminding staff to check in time.

[0047] The strain acquisition device also includes a positioning module 12, which is connected to the strain sensor 1 and is used to acquire the position information of the strain sensor 1; the positioning module 12 is connected to the processor 4, which acquires the position information based on the status information and transmits the position information to the terminal 5.

[0048] During mining or tunnel excavation, multiple hydraulic supports are needed to support the mine shaft. At this time, each hydraulic support is equipped with at least one strain sensor 1. If the status information detected by one of the multiple strain sensors 1 is abnormal, the processor 4 will simultaneously obtain the location information of the strain sensor 1 with abnormal status information through the positioning module, accurately determine the strain sensor module with abnormal status information, thereby effectively saving the time of the staff to investigate and find, and can quickly verify and resolve the problems of the hydraulic support.

[0049] To ensure that strain sensor 1 and laser sensor 3 can work properly, a power module 13 can also be installed inside the housing 9. The battery module is installed inside the housing 9 and is connected to both strain sensor 1 and laser sensor 3 to supply power to strain sensor 1 and laser sensor 3. When powered by the power module 13, strain sensor 1 and laser sensor 3 can work continuously.

[0050] If the power module 13 has insufficient power or cannot provide normal power, the strain sensor 1 and laser sensor 3 will not function properly. In this case, the batteries need to be replaced promptly. Therefore, a power detection module 14 is required. The power detection module 14 is connected to the power module 13 and the processor 4 to detect the remaining power of the power module 13 and obtain power information. The processor 4 receives the power information and transmits it to the terminal 5. When the power information is lower than a preset level, it can remind the staff to replace the batteries in time, thereby effectively preventing the strain sensor 1 and laser sensor 3 from malfunctioning due to low power.

[0051] The implementation principle of the strain acquisition device in this embodiment of the utility model is as follows:

[0052] The strain sensor 1 is fixed to the hydraulic support by the magnetic mounting base 2. At the same time, the laser sensor 3 detects the height information of the strain sensor 1 in real time. If the height information is lower than the preset height, the audible and visual alarm 6 can sound an alarm to remind the staff to check in time. Meanwhile, the processor 4 can obtain the location information of the strain sensor 1 with abnormal data through the positioning module 12, so that the staff can quickly find the corresponding location and check and troubleshoot in time.

[0053] To prevent the strain sensor 1 from being damaged by impacts from gravel or falling, a housing 9 can be installed on the outside of the strain sensor 1. The surface of the housing 9 can be provided with shock-absorbing sponge 15, which can effectively protect the strain sensor 1 and extend its service life.

[0054] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A strain acquisition device, characterized in that, include: A strain sensor, comprising contact points and non-contact points, wherein the contact points are used to contact a hydraulic support to acquire strain information of the hydraulic support; A magnetic mounting base is connected to the non-contact point, and the magnetic mounting base is magnetic and used to magnetically fix the strain sensor to the hydraulic support. A laser sensor is disposed at the bottom of the strain sensor and is used to measure the distance between the strain sensor and the ground; An audible and visual alarm is electrically connected to the laser sensor and is used to sound an alarm when the distance measured by the laser sensor is less than a preset distance.

2. The strain acquisition device according to claim 1, characterized in that, The device includes a housing that covers the outer periphery of the strain sensor. The housing has a first hole for exposing the contact point and a second hole for exposing the non-contact point. The magnetic mounting base is fitted into the second hole.

3. The strain acquisition device according to claim 2, characterized in that, The housing is provided with heat dissipation holes, and the heat dissipation holes extend toward the strain sensor.

4. The strain acquisition device according to claim 3, characterized in that, The heat dissipation holes are equipped with dustproof mesh.

5. The strain acquisition device according to claim 2, characterized in that, The surface of the outer shell is provided with shock-absorbing sponge, which covers the edges or corners of the outer shell.

6. The strain acquisition device according to any one of claims 1-5, characterized in that, include: The processor, the strain sensor, the laser sensor, and the audible and visual alarm are all electrically connected to the processor; A terminal, electrically connected to the processor, is used to display the strain information.

7. The strain acquisition device according to claim 6, characterized in that, It also includes a wireless communication module and a wireless gateway. The wireless communication module is electrically connected to the strain sensor and the laser sensor, and the wireless gateway is electrically connected between the wireless communication module and the processor.

8. The strain acquisition device according to claim 6, characterized in that, It also includes a positioning module, which is connected to the processor and is configured to correspond to the strain sensor. The positioning module is used to locate the hydraulic support monitored by the strain sensor.

9. The strain acquisition device according to claim 6, characterized in that, Also includes: A power module is provided, and both the strain sensor and the laser sensor are connected to the power module. A power detection module is connected to both the power module and the processor, and the power detection module is used to detect the power level of the power module.

10. A hydraulic support, characterized in that, Includes the strain acquisition device as described in any one of claims 1-9 above.

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