Material level detection device for draw shaft, draw shaft and material level detection system

Abstract

The utility model provides a draw shaft material level detection device, a draw shaft and a material level detection system, and relates to the technical field of draw shaft material level detection, the draw shaft material level detection device comprises a protective cover, a first telescopic piece and a material level indicator, the protective cover is provided with a containing cavity and an outlet communicated with the containing cavity; the first telescopic piece is provided with a first end and a second end, the first end of the first telescopic piece is installed in the containing cavity, the second end of the first telescopic piece is connected with the material level indicator and can push and pull the material level indicator to stretch out or retract back relative to the outlet, and the material level indicator is suitable for measuring the material level of the draw shaft. According to the utility model, the influence of the underground operation environment on the charge level indicator can be effectively reduced, the measurement precision is high, the service life of the charge level indicator can be ensured, and the maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of chute material level detection, in particular to a chute material level detection device, a chute and a material level detection system. Background Art

[0002] The pit chute is a space in an underground mine for temporarily storing the ore mined from the pit. The ore is often unloaded into the underground transportation equipment through the ore discharge device at the bottom of the chute, and the underground transportation equipment unloads the ore into the ore bin, and then the ore is lifted to the surface after being crushed. Therefore, the pit chute has become a key link between the unloading of ore from the pit and the loading of ore by underground transportation equipment. The storage volume of ore in the pit chute is of guiding significance to the production operation of the pit and the scheduling management of underground transportation, so it is necessary to monitor the chute material level.

[0003] In the related art, there are various measurement methods for monitoring the material level in the chute, such as contact weight measurement and non-contact radar level meter, laser rangefinder, ultrasonic level meter, and weighing method. However, the aforementioned measurement methods all have their own defects in practical applications. For example, contact chute measurement devices such as weights are easily affected by the environment and have a long measurement cycle, large errors, easy damage, and a low degree of automation; while non-contact chute measurement devices such as lasers have high requirements for installation accuracy. Not only are they difficult to install, but they are also unable to adapt to harsh environments such as dust and water vapor on site, so they have low measurement accuracy and a short service life. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of one aspect of the utility model proposes a material level detection device for a chute, which can effectively reduce the impact of the underground working environment on the level meter, has high measurement accuracy, can ensure the service life of the level meter, and has low repair and maintenance costs.

[0006] Another aspect of the present invention provides a chute.

[0007] Another aspect of the present invention provides a material level detection system.

[0008] A material level detection device for a chute according to an embodiment of the utility model includes a protective cover, a first telescopic member and a material level meter.

[0009] Wherein, the protective cover has a containing cavity and an outlet communicated with the containing cavity;

[0010] The first telescopic member has a first end and a second end, the first end of the first telescopic member is installed in the accommodating cavity, the second end of the first telescopic member is connected to the level meter and can push and pull the level meter to extend or retract relative to the outlet, and the level meter is suitable for measuring the material level of the chute.

[0011] According to the material level detection device for the chute in the embodiment of the utility model, the material level meter is integrated with the protective cover through the first telescopic part. When the material level needs to be measured, the first telescopic part pushes the material level meter to extend from the outlet of the protective cover, and the material level in the chute is measured by the material level meter. During the non-material level measurement period, the first telescopic part can pull the material level meter back to the accommodating cavity of the protective cover, which to a certain extent separates the material level meter from the underground working environment, so as to reduce the risk of the material level meter being easily damaged by erosion due to long-term exposure to the underground working environment. Therefore, compared with the related art, the utility model can effectively reduce the impact of the underground working environment on the material level meter, has high measurement accuracy, can ensure the service life of the material level meter, and has low repair and maintenance costs.

[0012] In some embodiments, the material level detection device for the chute further includes a protection door, which is movably connected to the protective cover and has a first position for closing the outlet and a second position for opening the outlet.

[0013] In some embodiments, the protective door is one of a swing door, a sliding door and a folding door.

[0014] In some embodiments, the material level detection device for the chute also includes a second telescopic member, the second telescopic member having a first end and a second end, the first end of the second telescopic member is connected to the protective cover, the second end of the second telescopic member is connected to the protective door, and the second telescopic member can push and pull the protective door between the first position and the second position.

[0015] In some embodiments, the protection door includes a first door body and a second door body, the first door body and the second door body can be pivotally matched with the outlet and arranged along the width direction of the outlet, the directions of the pivot axes of the first door body and the second door body are consistent with the height direction of the outlet, the first door body and the second door body are opposite or overlapped along the width direction of the outlet at the first position and are spaced apart along the width direction of the outlet at the second position;

[0016] The second telescopic member is located in the accommodating cavity, and the second end of the second telescopic member is connected to a side of at least one of the first door body and the second door body facing the accommodating cavity.

[0017] In some embodiments, the material level detection device for the chute further includes a dust monitor, which is mounted on the protective cover and is used to monitor the dust concentration at the chute.

[0018] In some embodiments, the material level meter is one of a radar level meter, a laser rangefinder and an ultrasonic level meter.

[0019] In some embodiments, the protective cover is provided with a fireproof and explosion-proof coating.

[0020] A chute according to an embodiment of the utility model includes a chute body and a material level detection device.

[0021] Wherein, the well body is arranged in the original rock of the mine and extends in the height direction;

[0022] Wherein, the material level detection device is the material level detection device described in any of the above embodiments, and the material level detection device is installed above the well body.

[0023] According to the chute of the embodiment of the utility model, the material level detection device is designed to be located outside the protective cover when measuring the material level, and to be stored inside the protective cover during the non-material level measurement period. This structure can effectively reduce the impact of the underground working environment on the material level meter and ensure the service life of the material level detection device. Therefore, compared with the related technology, the chute equipped with the material level detection device can realize rapid measurement of the material level in the well body during underground production operations, while ensuring the material level measurement accuracy and efficiency.

[0024] In some embodiments, a mounting hole is provided on the original rock of the mine, a through hole is provided on the protective cover, and the chute further includes an anchor rod and a nut. The anchor rod passes through the through hole and cooperates with the thread of the mounting hole. The nut is connected to the anchor rod thread and locks the material level detection device on the original rock of the mine.

[0025] In some embodiments, the through hole is connected to the accommodating cavity, the anchor rod has a connected embedded section and a fastening section, the embedded section is completely located in the mounting hole, the fastening section passes through the through hole and at least partially extends to the accommodating cavity, and the nut is located in the accommodating cavity and is threadedly connected to the fastening section.

[0026] A material level detection system according to an embodiment of the utility model includes the material level detection device described in any of the above embodiments, and the material level detection system also includes a central control unit, which is electrically connected to the material level meter and the first telescopic member in the material level detection device, and the material level meter feeds back the material level measurement information to the central control unit.

[0027] According to the material level detection system of the embodiment of the utility model, the central control unit can control the working conditions of the material level meter and the first telescopic member in the material level detection device by setting the measurement time and frequency according to the underground operation conditions, so as to monitor the material level in the chute. Therefore, compared with the related technology, the utility model can realize the automatic measurement of the material level in the chute, and improve the degree of automation of the material level detection device.

[0028] In some embodiments, the material level detection system further includes a data storage unit, and the data storage unit is used to store the material level measurement information of the material level meter to record the material level change.

[0029] In some embodiments, the central control unit includes a controller and a host computer. The controller is installed in the accommodating cavity and is electrically connected to the level meter, the first telescopic member, the second telescopic member and the dust monitor. The controller is used to communicate with the host computer.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a side view cutaway structural schematic diagram of a material level detection device for a chute according to an embodiment of the utility model.

[0032] Figure 2 It is a schematic diagram of the main structure of a material level detection device for a chute according to an embodiment of the utility model.

[0033] Figure 3 It is a schematic structural diagram of a chute according to an embodiment of the utility model.

[0034] Figure 4 It is a schematic diagram of the control relationship structure of the material level detection system according to an embodiment of the utility model.

[0035] Figure numerals: 1. protective cover, 11. accommodating chamber, 12. outlet, 2. first telescopic member, 3. material level meter, 4. protective door, 41. first door body, 42. second door body, 5. second telescopic member, 6. dust monitor, 7. well body, 8. anchor rod, 9. nut. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0037] like Figure 1As shown, a material level detection device for a chute according to an embodiment of the utility model comprises a protective cover 1, a first telescopic member 2 and a material level meter 3.

[0038] The protective cover 1 has a containing cavity 11 and an outlet 12 communicating with the containing cavity 11 , and the outlet 12 is connected with the external environment.

[0039] Among them, the first telescopic member 2 has a first end and a second end. The first end of the first telescopic member 2 is installed in the accommodating cavity 11. The second end of the first telescopic member 2 is connected to the level meter 3 and can push and pull the level meter 3 to extend or retract relative to the outlet 12. The level meter 3 is suitable for measuring the material level of the chute.

[0040] According to the material level detection device for the chute in the embodiment of the utility model, the material level meter 3 is integrated with the protective cover 1 through the first telescopic member 2. When the material level needs to be measured, the first telescopic member 2 pushes the material level meter 3 to extend from the outlet 12 of the protective cover 1, and the material level in the chute is measured by the material level meter 3. During the non-material level measurement period, the first telescopic member 2 can pull the material level meter 3 back to the accommodating chamber 11 of the protective cover 1, to separate the material level meter 3 from the underground working environment to a certain extent, so as to reduce the risk of the material level meter 3 being easily damaged by erosion due to long-term exposure to the underground working environment. Therefore, compared with the related art, the utility model can effectively reduce the impact of the underground working environment on the material level meter 3, has high measurement accuracy, can ensure the service life of the material level meter 3, and has low repair and maintenance costs.

[0041] Specifically, the protective cover 1 may be provided with a fireproof and explosion-proof coating, or the material used for the protective cover 1 meets the underground mine safety requirements and has explosion-proof performance. The shape of the protective cover 1 may not be limited to a rectangle, a sphere, a hemispherical shape, etc. The first telescopic member 2 may not be limited to a scissor-type telescopic frame or a pulley-type telescopic frame, and other existing structures with telescopic performance may be used, such as a telescopic cylinder (including a cylinder, a hydraulic cylinder, an electric cylinder or an oil cylinder). The level meter 3 may not be limited to one of a radar level meter, a laser rangefinder and an ultrasonic level meter, and other types of level meters 3 that can realize material level measurement may be used, which will not be specifically expanded here. Taking the telescopic movement of the first telescopic member 2 along the front-to-back direction in the figure as an example, the first end of the first telescopic member 2 corresponds to the rear end of the first telescopic member 2 in the figure, and the second end of the first telescopic member 2 corresponds to the front end of the first telescopic member 2 in the figure.

[0042] It should be noted that, because the level meter 3 is stored in the accommodating chamber 11 during the non-level measurement period, the influence of the external environment on it is reduced (i.e., it is not easy to be frequently damaged by dust and water vapor, etc.), the maintenance amount and maintenance cost are reduced, and the influence of the level meter 3 on its measurement accuracy and measurement effect due to long-term exposure to the underground working environment is also avoided, thereby ensuring the measurement accuracy of the level detection device. In addition, the level detection device formed by the protective cover 1, the first telescopic member 2 and the level meter 3 realizes the integration, modularization and independence of the level detection device. The whole device has a simple processing technology and strong applicability. It can meet the measurement of various types of chute material levels without the need for targeted design, can be mass-produced, and has strong promotion.

[0043] like Figure 2 As shown, in some embodiments, the material level detection device for the chute further includes a protection door 4 , which is movably connected to the protective cover 1 and has a first position for closing the outlet 12 and a second position for opening the outlet 12 .

[0044] It can be understood that the protective door 4 can close the outlet 12, further providing a closed environment for the level meter 3 and the first telescopic member 2 to be housed in the accommodating chamber 11, effectively avoiding the erosion of the level meter 3 and the first telescopic member 2 by the underground working environment, so as to ensure the protection performance of both, so that the subsequent level detection operation can be carried out smoothly, and the service life of the level detection device is guaranteed.

[0045] Specifically, the protection door 4 may be connected to the protection cover 1 in a pivoting or sliding manner. The material of the protection door 4 may be the same as that of the protection cover 1 to ensure the safety of the material level detection device in an underground working environment.

[0046] In some embodiments, the protective door 4 is one of a swing door, a sliding door and a folding door, that is, the protective door 4 can select a corresponding door body structure according to the specific structure and layout space of the material level detection device. For example, when space is limited, a folding door structure is adopted (that is, the protective door is formed by folding multiple door bodies, and the multiple door bodies are spread out flat to achieve the closure of the outlet, or the multiple door bodies are stacked in sequence to achieve the opening of the outlet). When there is enough space, an integrated door structure can be adopted (that is, the door body is an integral rigid door, and the rigid door can be opened and closed by pushing, pulling or pivoting) to ensure the airtightness of the protective cover.

[0047] like Figure 1 and Figure 2 As shown, in some embodiments, the material level detection device for the chute also includes a second telescopic member 5, the second telescopic member 5 has a first end and a second end, the first end of the second telescopic member 5 is connected to the protective cover 1, the second end of the second telescopic member 5 is connected to the protective door 4, and the second telescopic member 5 can push and pull the protective door 4 between the first position and the second position.

[0048] It can be understood that the second telescopic member 5 can be used to control the automatic opening and closing of the protection door 4 to improve the automation level of the material level detection device.

[0049] Particularly, the second telescopic member 5 may not be limited to a telescopic cylinder (comprising a cylinder, a hydraulic cylinder, an electric cylinder or an oil cylinder), and other existing structures with telescopic performance may be used. To the specific selection and structural design of the first telescopic member 2 and the second telescopic member 5, cost, use environment, and service life etc. can be considered to be determined, and no longer launched at this. Also, the telescopic of the second telescopic member 5 along the front-back direction among the figure is an example, the rear end of the second telescopic member 5 in the first end corresponding figure of the second telescopic member 5, the front end of the second telescopic member 5 in the second end corresponding figure of the second telescopic member 5.

[0050] like Figure 1 and Figure 2 As shown, in some embodiments, the protective door 4 includes a first door body 41 and a second door body 42, and the first door body 41 and the second door body 42 can be pivotally engaged with the outlet 12 and arranged along the width direction of the outlet 12, and the directions of the pivot axes of the first door body 41 and the second door body 42 are consistent with the height direction of the outlet 12, and the first door body 41 and the second door body 42 are connected or overlapped along the width direction of the outlet 12 at a first position and are spaced apart along the width direction of the outlet 12 at a second position.

[0051] The second telescopic member 5 is located in the accommodating cavity 11, that is, the first end of the second telescopic member 5 is connected to the accommodating cavity 11, and the second end of the second telescopic member 5 is connected to a side of at least one of the first door body 41 and the second door body 42 facing the accommodating cavity 11, that is, the second end of the second telescopic member 5 is connected to the rear wall surface of at least one of the first door body 41 and the second door body 42.

[0052] It can be understood that the second telescopic member 5 is also arranged in the accommodating chamber 11, which can protect the second telescopic member 5 from erosion by the underground working environment and ensure its service life, so that the protection door 4 can be opened and closed normally, and cooperate with the level meter 3 to complete the level measurement operation, further optimizing the overall structural performance of the level detection device.

[0053] Specifically, the width direction of the outlet 12 may be the left-right direction in the figure. The height direction of the outlet 12 may be the up-down direction in the figure. The first door body 41 may correspond to the left door body in the figure, and the second door body 42 may correspond to the right door body in the figure.

[0054] like Figure 1As shown, in some embodiments, the material level detection device for the chute also includes a dust monitor 6, which is installed on the protective cover 1 and is used to monitor the dust concentration at the chute, so as to determine whether to push the material level meter 3 out of the accommodating chamber 11 for material level detection according to the dust concentration in the underground working environment, thereby ensuring the measurement accuracy and measurement effect of the material level meter 3 and further improving the working performance of the material level detection device.

[0055] Specifically, the dust monitor 6 is not limited to being a dust concentration sensor, and any other existing monitoring device that can be used to determine the dust situation in the underground working environment may be used.

[0056] like Figures 1 to 3 As shown, a chute in an embodiment of the utility model includes a chute body 7 and a material level detection device.

[0057] The well body 7 is arranged in the original rock of the mine and extends in the height direction, and the well body 7 is used to place ore, wherein the height direction may be the up and down direction in the figure.

[0058] The material level detection device is any one of the above-mentioned embodiments, and is installed above the well body 7 so as not to affect the underground production operation.

[0059] According to the chute of the embodiment of the utility model, the material level detection device is designed to be located outside the protective cover 1 when measuring the material level, and to be stored inside the protective cover 1 during the non-material level measurement period. This structure can effectively reduce the impact of the underground working environment on the material level meter 3 and ensure the service life of the material level detection device. Therefore, compared with the related technology, the chute equipped with the material level detection device can realize rapid measurement of the material level in the well body 7 during the underground production operation, while ensuring the material level measurement accuracy and measurement efficiency.

[0060] It should be noted that the material level detection device can be arranged near the center position above the well body 7 during installation, or the installation position of the material level detection device can be comprehensively considered based on the maximum extension length of the first telescopic member 2 and the specific installation environment to ensure that the level meter 3 does not collide with the well wall when extending out of the accommodating cavity 11 to measure the material level.

[0061] like Figure 1 and Figure 2 As shown, in some embodiments, a mounting hole is provided on the original rock of the mine, a through hole is provided on the protective cover 1, and the chute also includes an anchor rod 8 and a nut 9. The anchor rod 8 passes through the through hole and cooperates with the thread of the mounting hole. The nut 9 is threadedly connected to the anchor rod 8 and locks the material level detection device on the original rock of the mine.

[0062] It can be understood that, through the cooperation of the mounting hole, the through hole, the anchor rod 8 and the nut 9, the material level detection device can be quickly installed above the well body 7, with strong connection reliability, high disassembly and assembly efficiency, and simple structure.

[0063] It should be noted that in order to further enable the material level detection device to be prefabricated as a set and installed immediately after use, and to improve the installation efficiency of the material level detection device above the well body 7, the anchor rod 8 and the nut 9 can be pre-installed on the protective cover 1 before installation, so that during installation, only an installation hole matching the specifications of the anchor rod 8 is drilled in the original rock of the mine above the well body 7, and then the anchor rod 8 is threaded into the installation hole, and then the nut 9 on the anchor rod 8 is screwed until it is locked, thereby completing the rapid installation of the material level detection device above the well body 7, thereby improving the versatility of the material level detection device.

[0064] like Figure 1 and Figure 2 As shown, in some embodiments, the through hole is connected to the accommodating cavity 11, the anchor rod 8 has a connected embedded section and a fastening section, the embedded section is completely located in the mounting hole, the fastening section passes through the through hole and at least partially extends to the accommodating cavity 11, and the nut 9 is located in the accommodating cavity 11 and is threadedly connected to the fastening section.

[0065] It can be understood that, since the embedded section of the anchor rod 8 is completely located in the installation hole, and the fastening section of the anchor rod 8 and the nut 9 are located in the protective cover 1, the risk of erosion of the anchor rod 8 and the nut 9 by the underground working environment can be effectively avoided, so as to ensure the fastening effect of the anchor rod 8 and the nut 9 and realize the reliable installation of the material level detection device above the well body 7.

[0066] Specifically, the through hole may be provided on the top wall of the protective cover 1 , wherein the lower end of the through hole is communicated with the accommodating cavity 11 , and the upper end of the through hole is communicated with the external environment.

[0067] like Figure 4 As shown, a material level detection system of an embodiment of the utility model includes a material level detection device of any of the above embodiments, and the material level detection system also includes a central control unit, which is electrically connected to the material level meter 3 and the first telescopic member 2 in the material level detection device, and the material level meter 3 feeds back the material level measurement information to the central control unit.

[0068] According to the material level detection system of the embodiment of the utility model, the central control unit can control the working conditions of the material level meter 3 and the first telescopic member 2 in the material level detection device by setting the measurement time and frequency according to the underground operation conditions, so as to monitor the material level in the chute. Therefore, compared with the related technology, the utility model can realize the automatic measurement of the material level in the chute, and improve the degree of automation of the material level detection device.

[0069] like Figure 4As shown, in some embodiments, the material level detection system also includes a data storage unit (not shown in the figure), which is used to store the material level measurement information of the material level meter 3 to record the material level changes, so that the mine production management department can grasp the storage amount of ore in the mine chute based on the recorded material level measurement information, so as to make reasonable arrangements for the production operations of the mine and underground transportation scheduling management.

[0070] like Figure 4 As shown, in some embodiments, the central control unit includes a controller and a host computer. The controller is installed in the accommodating cavity 11 and is electrically connected to the level meter 3, the first telescopic member 2, the second telescopic member 5 and the dust monitor 6. The controller is used to communicate with the host computer, and the two can communicate by means of wireless transmission without limitation.

[0071] It can be understood that integrating the controller into the accommodating cavity 11 can further improve the automation performance of the material level detection device, and enable the protective cover 1 to protect the controller from external dust, water vapor and the like.

[0072] It should be noted that the setting of the measurement time and frequency of the material level in the well body 7 by the material level detection device can be achieved by setting the corresponding control program in the controller in advance, or by remotely customizing the measurement time and frequency through the host computer. The specific design is based on comprehensive consideration of production practice, ease of implementation, and production cost, and will not be elaborated here.

[0073] Now, combined with the specific structure of the material level detection device, its working process is described, specifically:

[0074] 1) In the original rock of the mine above the well body 7, a corresponding installation hole is drilled according to the specifications of the anchor rod 8, so that the anchor rod 8 is threadedly connected to the installation hole, and the nut 9 on the anchor rod 8 is screwed until the nut 9 is pressed against the inner wall surface of the accommodating cavity 11, thereby completing the installation of the material level detection device above the well body 7;

[0075] 2) According to the set measurement time and the monitoring information of the dust monitor 6, the working condition of the material level meter 3 is determined. Within the set measurement time, if the dust monitor 6 detects that the dust concentration in the underground working environment meets the effective permitted measurement range, the second telescopic member 5 pushes the protective door 4 to switch from the first position to the second position, so that the first door body 41 and the second door body 42 open the outlet 12, and then the material level meter 3 is pushed out of the outlet 12 by the first telescopic member 2, and the material level meter 3 is placed in the measurement area above the well body 7 (that is, the area away from the well wall of the well body 7, preferably the middle position of the well body 7) for material level measurement. At the same time, the material level meter 3 feeds back the measurement information to the controller, and the data storage unit stores the measurement information; otherwise (that is, when the dust monitor 6 detects that the dust concentration in the underground working environment does not meet the effective permitted measurement range), the controller does not start the material level measurement mode (that is, the first material level meter 3 is still stored in the accommodating chamber 11);

[0076] 3) After completing the material level measurement, the first telescopic member 2 pulls the material level meter 3 to be stored in the accommodating chamber 11, and the second telescopic member 5 controls the first door body 41 and the second door body 42 to be closed, so that the material level meter 3, the first telescopic member 2 and the second telescopic member 5 are all protected in the protective cover 1, preparing for the next material level measurement.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0082] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A material level detection device for a chute, characterized in that: include: A protective cover, the protective cover having a containing cavity and an outlet communicating with the containing cavity; as well as A first telescopic member and a material level meter, wherein the first telescopic member has a first end and a second end, the first end of the first telescopic member is installed in the accommodating cavity, the second end of the first telescopic member is connected to the material level meter and can push and pull the material level meter to extend or retract relative to the outlet, and the material level meter is suitable for measuring the material level of the chute.

2. The material level detection device for a chute according to claim 1, characterized in that: Also included is a protection door, the protection door is movably connected to the protective cover and has a first position closing the outlet and a second position opening the outlet; And / or, the protection door is one of a swing door, a sliding door and a folding door.

3. The material level detection device for a chute according to claim 2, characterized in that: It also includes a second telescopic member, which has a first end and a second end. The first end of the second telescopic member is connected to the protective cover, and the second end of the second telescopic member is connected to the protective door. The second telescopic member can push and pull the protective door between the first position and the second position.

4. The material level detection device for a chute according to claim 3, characterized in that: The protection door comprises a first door body and a second door body, the first door body and the second door body are both pivotally matched to the outlet and arranged along the width direction of the outlet, the directions of the pivot axes of the first door body and the second door body are both consistent with the height direction of the outlet, the first door body and the second door body are oppositely connected or overlapped along the width direction of the outlet at the first position and are spaced apart along the width direction of the outlet at the second position; The second telescopic member is located in the accommodating cavity, and the second end of the second telescopic member is connected to a side of at least one of the first door body and the second door body facing the accommodating cavity.

5. The material level detection device for a chute according to any one of claims 1 to 4, characterized in that: It also includes a dust monitor, which is installed on the protective cover and is used to monitor the dust concentration at the chute.

6. A chute, characterized in that: include: A well body, which is arranged in the original rock of the mine and extends in a height direction; and A material level detection device, wherein the material level detection device is the material level detection device according to any one of claims 1 to 5, and the material level detection device is installed above the well body.

7. The chute according to claim 6, characterized in that: An installation hole is provided on the original rock of the mine, a through hole is provided on the protective cover, and the chute also includes an anchor rod and a nut. The anchor rod passes through the through hole and cooperates with the thread of the installation hole, and the nut is connected to the thread of the anchor rod and locks the material level detection device on the original rock of the mine.

8. The chute according to claim 7, characterized in that: The through hole is communicated with the accommodating cavity, the anchor rod has a connected embedded section and a fastening section, the embedded section is completely located in the mounting hole, the fastening section passes through the through hole and at least partially extends to the accommodating cavity, the nut is located in the accommodating cavity and is threadedly connected to the fastening section.

9. A material level detection system, characterized in that: The material level detection device comprises the material level detection device as described in any one of claims 1 to 5, and the chute material level detection system further comprises a central control unit, the central control unit is electrically connected to the material level meter and the first telescopic member in the material level detection device, and the material level meter feeds back the material level measurement information to the central control unit.

10. The material level detection system according to claim 9, characterized in that: It also includes a data storage unit, which is used to store the material level measurement information of the material level meter to record the material level change.

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