Elevator monitoring sensor and mine elevator

Abstract

The elevator monitoring sensor comprises a base body, piezoelectric ceramic and a rolling sleeve, the base body is suitable for being fixedly installed in a mine, the base body comprises a bearing sleeve, the piezoelectric ceramic is cylindrical and is connected to the bearing sleeve in a sleeved mode, a first signal transmission line is electrically connected to the piezoelectric ceramic, and a second signal transmission line is electrically connected to the rolling sleeve. The rolling sleeve is arranged on the piezoelectric ceramic in a pivoting and sleeving mode around the axis of the bearing sleeve and used for winding of a steel wire rope of the elevator. The elevator monitoring sensor provided by the utility model has the advantages that the cost for monitoring the load of the elevator is low, and the operation safety of the elevator is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a hoist monitoring sensor and a mine hoist. Background Art

[0002] During the construction of coal mines, it is very necessary to monitor the load of coal mine hoists and their up and down movements. Load monitoring can help determine the weight currently carried by the hoist to ensure that it operates within the designed load range. If the load exceeds the rated range, it may cause the hoist to be overloaded, increasing the risk of accidents. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model proposes a hoist monitoring sensor, which has the advantages of low cost for monitoring the load of the hoist and high safety in the operation of the hoist.

[0005] The embodiment of the utility model also provides a mine hoist.

[0006] The hoist monitoring sensor of the embodiment of the utility model includes a substrate, a piezoelectric ceramic and a roller sleeve, the substrate is suitable for fixed installation in a mine, the substrate includes a load-bearing sleeve; the piezoelectric ceramic is cylindrical and is sleeved on the load-bearing sleeve, and a first signal transmission line is electrically connected to the piezoelectric ceramic; the roller sleeve is pivotally sleeved on the piezoelectric ceramic around the axis of the load-bearing sleeve, and the roller sleeve is used for winding the wire rope of the hoist.

[0007] According to the hoist monitoring sensor of the embodiment of the utility model, a piezoelectric ceramic is sleeved on the load-bearing sleeve in the base, and the roller sleeve can be pivotally sleeved on the piezoelectric ceramic around the axis of the load-bearing sleeve. After the base is fixedly installed in the mine, the wire rope connected between the hoist and the cage of the hoist is wound on the roller sleeve. At this time, the hoist monitoring sensor plays the role of fixed pulley steering. The force of the wire rope on the roller sleeve is in a set functional relationship with the tension of the wire rope, and the roller sleeve also transmits the force to the piezoelectric ceramic, so that the piezoelectric ceramic is compressed and deformed to generate an electrical signal, which represents that the amplitude of the electrical signal is also in a set functional relationship with the tension of the wire rope. Then, by monitoring the electrical signal output by the piezoelectric ceramic, the tension of the wire rope can be obtained, so as to realize the monitoring of the load of the hoist, ensure that it operates within the design range, and ensure its safe and reliable operation. At the same time, it only needs to output the electrical signal by itself through the pressure of the piezoelectric ceramic, and no external power supply is required, so that the hoist monitoring sensor of this embodiment has a high cost for monitoring the load of the hoist.

[0008] In some embodiments, the elevator monitoring sensor also includes an insulating ring plate, an inner friction plate and an outer friction plate, wherein the insulating ring plate is coaxially fixed on the outer circumferential surface of the rolling sleeve; the inner friction plate is fixed on the outer circumferential surface of the insulating ring plate; the outer friction plate is fixed on the base, there are at least three outer friction plates and they are arranged at intervals along the circumference of the load-bearing sleeve, and the circumferential dimensions of all the outer friction plates of the load-bearing sleeve decrease successively along the circumference of the load-bearing sleeve, and when the rolling sleeve rotates around the axis of the load-bearing sleeve, the inner friction plate can generate electricity by friction with any of the outer friction plates, and any of the outer friction plates is electrically connected to a second signal transmission line.

[0009] In some embodiments, the inner friction plate is a polyimide film, and the outer friction plate includes a copper plate.

[0010] In some embodiments, the base also includes a shell, which surrounds a cylindrical chamber, the load-bearing sleeve is connected to the shell and is partially located in the cylindrical chamber, the insulating ring plate and the inner friction plate are both located in the cylindrical chamber, and the outer friction plate is bonded to the inner circumferential surface of the cylindrical chamber.

[0011] In some embodiments, the shell includes a sleeve and a cover plate, the cover plate is connected to the first end of the sleeve and closes the first opening of the sleeve, and an axial end of the load-bearing sleeve extends into the sleeve from the second opening of the sleeve and is connected to the cover plate.

[0012] In some embodiments, a first through hole communicating with the inner cavity of the load-bearing sleeve is provided on the wall of the load-bearing sleeve, a second through hole communicating with the inner cavity of the load-bearing sleeve is provided on the cover plate, and the first signal transmission line extends out of the housing through the first through hole and the second through hole;

[0013] And / or, the cover plate is provided with a third through hole communicating with the cylindrical chamber, and the second signal transmission line extends out of the shell through the third through hole.

[0014] In some embodiments, the base further includes an annular baffle, which is connected to the second end of the sleeve, and a portion of the roller sleeve extends into the cylindrical chamber through an inner hole of the annular baffle.

[0015] In some embodiments, the elevator monitoring sensor further comprises a bearing, wherein:

[0016] The bearing is coaxially matched between the load-bearing sleeve and the rolling sleeve, and / or the bearing is coaxially matched between the piezoelectric ceramic and the rolling sleeve.

[0017] In some embodiments, the base also includes a first baffle and a second baffle arranged at intervals along the axial direction of the load-bearing sleeve, the first baffle and the second baffle are fixedly connected to the outer circumferential surface of the load-bearing sleeve, and the rolling sleeve is located between the first baffle and the second baffle.

[0018] According to an embodiment of the utility model, a mine hoist comprises a wire rope, a first fixed pulley, a second fixed pulley and a hoist monitoring sensor as described in any of the above embodiments, the wire rope transmission is fitted on each of the first fixed pulley, the roller sleeve and the second fixed pulley, and the extension direction of the portion of the wire rope located between the first fixed pulley and the roller sleeve is at an angle of 120° to the extension direction of the portion of the wire rope located between the second fixed pulley and the roller sleeve.

[0019] The technical advantages of the mine hoist according to the embodiment of the utility model are the same as the technical advantages of the hoist monitoring sensor in the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a hoist monitoring sensor according to an embodiment of the utility model.

[0021] Figure 2 It is a cross-sectional view of a hoist monitoring sensor according to an embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of the relationship between the inner friction plate and the outer friction plate in the elevator monitoring sensor according to the embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of a mine hoist according to an embodiment of the utility model.

[0024] Figure 5 It is a schematic diagram of a hoist monitoring sensor, a first fixed pulley and a second fixed pulley in a mine hoist according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Base; 11. Load-bearing sleeve; 111. First through hole; 12. Shell; 121. Sleeve; 122. Cover plate; 1221. Second through hole; 1222. Third through hole; 13. Annular baffle; 14. First baffle; 15. Second baffle; 16. Insulating ring plate; 2. Piezoelectric ceramics; 21. First signal transmission line; 3. Rolling sleeve; 4. Insulating ring plate; 5. Inner friction plate; 6. Outer friction plate; 61. Second signal transmission line; 7. Bearing; 8. Retaining ring; 9. First fixed pulley; 10. Second fixed pulley; 110. Wire rope; 120. Winch; 130. Cage. DETAILED DESCRIPTION

[0027] 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.

[0028] Combine the following Figure 1-Figure 5 A hoist monitoring sensor according to an embodiment of the present invention is described.

[0029] The hoist monitoring sensor of the embodiment of the utility model comprises a substrate 1, a piezoelectric ceramic 2 and a roller sleeve 3. The substrate 1 is suitable for fixed installation in a mine, and the substrate 1 comprises a load-bearing sleeve 11. The piezoelectric ceramic 2 is cylindrical and sleeved on the load-bearing sleeve 11, and a first signal transmission line 21 is electrically connected to the piezoelectric ceramic 2. The roller sleeve 3 is pivotally sleeved on the piezoelectric ceramic 2 around the axis of the load-bearing sleeve 11, and the roller sleeve 3 is used for winding the wire rope 110 of the hoist.

[0030] According to the hoist monitoring sensor of the embodiment of the utility model, the load-bearing sleeve 11 in the base 1 is sleeved with a piezoelectric ceramic 2, and the roller sleeve 3 is pivotally sleeved on the piezoelectric ceramic 2 around the axis of the load-bearing sleeve 11. After the base 1 is fixedly installed in the mine, the wire rope 110 connected between the hoist 120 and the cage 130 of the hoist is wound on the roller sleeve 3. At this time, the hoist monitoring sensor plays the role of fixed pulley steering. The force of the wire rope 110 on the roller sleeve 3 is in a set functional relationship with the tension of the wire rope 110, and the roller sleeve 3 also transmits the force received to the piezoelectric ceramic 2, so that the piezoelectric ceramic 2 is compressed and deformed to generate an electrical signal, thereby representing that the amplitude of the electrical signal is also in a set functional relationship with the tension of the wire rope 110. Then, by monitoring the electrical signal output by the piezoelectric ceramic 2, the tension of the wire rope 110 can be obtained, so as to realize the monitoring of the load of the hoist, ensure that it operates within the design range, and ensure its safe and reliable operation. At the same time, the piezoelectric ceramic 2 only needs to be pressurized to output an electrical signal, and no external power supply is required, which makes the hoist monitoring sensor of this embodiment high in cost for monitoring the load of the hoist.

[0031] It should be noted that Figure 5 As shown, taking the example that the wire rope 110 passes through the first fixed pulley 9, the roller sleeve 3 of the hoist monitoring sensor and the second fixed pulley 10 in sequence, and the extension direction of the portion of the wire rope 110 located between the first fixed pulley 9 and the roller sleeve 3 forms an angle of 120° with the extension direction of the portion of the wire rope 110 located between the second fixed pulley 10 and the roller sleeve 3, at this time, through mechanical force analysis, it is known that F1, F2 and F3 are all equal, and F1 and F2 are both the tension of the wire rope 110, F3 is the reaction force of the roller sleeve 3 acting on the wire rope 110, and at the same time, F3 is also the pressure given to the piezoelectric ceramic 2 by the roller sleeve 3. Therefore, the pressure given to the piezoelectric ceramic 2 by the roller sleeve 3 is also the load of the hoist.

[0032] In some embodiments, Figure 2 and Figure 3 As shown, the hoist monitoring sensor also includes an insulating ring plate 416, an inner friction plate 5 and an outer friction plate 6. The insulating ring plate 416 is coaxially fixed on the outer peripheral surface of the roller sleeve 3. The inner friction plate 5 is fixed on the outer peripheral surface of the insulating ring plate 416. The outer friction plate 6 is fixed on the base 1. There are at least three outer friction plates 6 and they are arranged at intervals along the circumference of the load-bearing sleeve 11. The circumferential dimensions of all the outer friction plates 6 on the load-bearing sleeve 11 are successively reduced along the circumference of the load-bearing sleeve 11. When the roller sleeve 3 rotates around the axis of the load-bearing sleeve 11, the inner friction plate 5 can generate electricity by mutual friction with any outer friction plate 6, and any outer friction plate 6 is electrically connected to the second signal transmission line 61.

[0033] The larger the circumferential size of the outer friction plate 6 is, the larger the amplitude of the electric signal transmitted by the second signal transmission line 61 after the friction power generation between the inner friction plate 5 and the outer friction plate 6 is. Therefore, when the roller sleeve 3 rotates counterclockwise and clockwise around the axis of the load-bearing sleeve 11 relative to the load-bearing sleeve 11, the electric signal changes decrease and increase in sequence respectively. The above-mentioned electric signal change rule can be used to determine whether the cage 130 of the hoist is in the upward state or the downward state, which is more suitable for underground working conditions. In addition, no external power supply is required when judging the upward and downward states, which effectively reduces the cost of the hoist monitoring sensor to judge the upward and downward states of the hoist.

[0034] Specifically, Figure 3 As shown, there may be three outer friction plates 6 arranged at intervals along the circumference of the load-bearing sleeve 11. The insulating ring plate 416 is a plastic plate, which can be coaxially fixed on the outer circumferential surface of the rolling sleeve 3 by bonding or clamping.

[0035] Alternatively, the number of the outer friction plates 6 may be four, five or more.

[0036] In some embodiments, the inner friction plate 5 is a polyimide film, and the outer friction plate 6 includes a copper plate.

[0037] While the polyimide film can generate electricity by friction with the copper sheet, the polyimide film has good high temperature resistance and good mechanical properties. It can withstand reciprocating friction with the copper sheet without deformation or damage, effectively ensuring the reliability of the frictional charging between the polyimide film and the copper sheet.

[0038] In some embodiments, Figure 1 and Figure 2 As shown, the base 1 also includes a shell 12, which surrounds a cylindrical chamber. The load-bearing sleeve 11 is connected to the shell 12 and is partially located in the cylindrical chamber. The insulating ring plate 416 and the inner friction plate 5 are both located in the cylindrical chamber, and the outer friction plate 6 is bonded to the inner circumferential surface of the cylindrical chamber.

[0039] The inner friction plate 5 and the outer friction plate 6 are both hidden in the cylindrical chamber of the shell 12, thereby effectively preventing external dust from adhering to the outer surfaces of the inner friction plate 5 and the outer friction plate 6 and causing frictional electrification failure of the two, thereby effectively ensuring the reliability of judging the upward and downward states of the elevator.

[0040] In some embodiments, Figure 2 As shown, the shell 12 includes a sleeve 121 and a cover plate 122. The cover plate 122 is connected to the first end of the sleeve 121 and closes the first opening of the sleeve 121. An axial end of the load-bearing sleeve 11 extends into the sleeve 121 from the second opening of the sleeve 121 and is connected to the cover plate 122.

[0041] That is, the second end of the sleeve 121 forms a second opening, thereby facilitating the extension of part of the rolling sleeve 3 and the insulating ring plate 416 and the inner friction plate 5 thereon into the cylindrical chamber, thereby improving the assembly efficiency of the elevator monitoring sensor.

[0042] Specifically, one axial end of the load-bearing sleeve 11 is integrally formed with the cover plate 122 , and the axis of the load-bearing sleeve 11 coincides with the axis of the sleeve 121 .

[0043] In some embodiments, Figure 2 As shown, the wall of the load-bearing sleeve 11 is provided with a first through hole 111 communicating with the inner cavity of the load-bearing sleeve 11, the cover plate 122 is provided with a second through hole 1221 communicating with the inner cavity of the load-bearing sleeve 11, and the first signal transmission line 21 extends out of the housing 12 through the first through hole 111 and the second through hole 1221. And / or, the cover plate 122 is provided with a third through hole 1222 communicating with the cylindrical chamber, and the second signal transmission line 61 extends out of the housing 12 through the third through hole 1222.

[0044] The provision of the second through hole 1221 and the third through hole 1222 facilitates the first signal transmission line 21 and the second signal transmission line 61 to be exposed outside the housing 12 for electrical connection with an external controller, so as to be converted into load values ​​and up / down information indications respectively, so as to facilitate users to directly obtain the required information.

[0045] Specifically, the second through hole 1221 is substantially located at the center of the cover plate 122 , and the number of the third through holes 1222 is equal to and corresponds to the number of the second signal transmission lines 61 .

[0046] In some embodiments, Figure 2 As shown, the base 1 further includes an annular baffle 13 , which is connected to the second end of the sleeve 121 , and a portion of the roller sleeve 3 extends into the cylindrical chamber through the inner hole of the annular baffle 13 .

[0047] After the partial rolling sleeve 3, the insulating ring plate 416 and the inner friction plate 5 are assembled in the cylindrical chamber, the annular baffle 13 is connected to the second end of the sleeve 121 to seal most of the space of the second opening of the sleeve 121, further reducing the probability of dust entering the cylindrical chamber.

[0048] Specifically, the outer circumferential surface of the annular baffle 13 is in close contact with and connected to the inner circumferential surface of the sleeve 121 , and the rolling sleeve 3 is gap-matched with the inner hole of the annular baffle 13 .

[0049] In some embodiments, the elevator monitoring sensor further includes a bearing 7 , wherein the bearing 7 is coaxially fitted between the load-bearing sleeve 11 and the rolling sleeve 3 , and / or the bearing 7 is coaxially fitted between the piezoelectric ceramic 2 and the rolling sleeve 3 .

[0050] The arrangement of the bearing 7 ensures that the piezoelectric ceramic 2 will not be damaged by frequent sliding friction with the rolling sleeve 3, thereby effectively ensuring the reliability of the hoist monitoring sensor in monitoring the load of the hoist.

[0051] Specifically, Figure 2 As shown, the bearing 7 can be coaxially matched between the bearing sleeve 11 and the rolling sleeve 3, and a retaining ring 8 is provided on the side of the bearing 7 away from the piezoelectric ceramic 2, and the retaining ring 8 is sleeved on the bearing sleeve 11, thereby realizing the limit of the bearing 7. The number of bearings 7 can be one, and one bearing 7 is arranged on one side of the piezoelectric ceramic 2, or the number of bearings 7 can also be two, and the two bearings 7 are arranged on both sides of the axial direction of the piezoelectric ceramic 2.

[0052] In some embodiments, the base 1 also includes a first baffle 14 and a second baffle 15 arranged at intervals along the axial direction of the load-bearing sleeve 11. The first baffle 14 and the second baffle 15 are fixedly connected to the outer peripheral surface of the load-bearing sleeve 11, and the rolling sleeve 3 is located between the first baffle 14 and the second baffle 15.

[0053] The first baffle 14 and the second baffle 15 limit the roller sleeve 3 in its axial direction, effectively preventing the roller sleeve 3 from escaping from the load-bearing sleeve 11, and also effectively preventing the inner friction plate 5 from axially dislocating and failing to ensure stable friction power generation with the outer friction plate 6.

[0054] The mine hoist according to the embodiment of the utility model includes a wire rope 110, a first fixed pulley 9, a second fixed pulley 10 and a hoist monitoring sensor as in any of the above embodiments, the wire rope 110 is transmitted and matched on each of the first fixed pulley 9, the roller sleeve 3 and the second fixed pulley 10, and the extension direction of the portion of the wire rope 110 located between the first fixed pulley 9 and the roller sleeve 3 is at an angle of 120° to the extension direction of the portion of the wire rope 110 located between the second fixed pulley 10 and the roller sleeve 3.

[0055] The technical advantages of the mine hoist according to the embodiment of the utility model are the same as the technical advantages of the hoist monitoring sensor in the above-mentioned embodiment, which will not be repeated here.

[0056] Specifically, both ends of the wire rope 110 are respectively connected to the winch 120 and the cage 130, the first fixed pulley 9, the second fixed pulley 10 and the elevator monitoring sensor are axially consistent, the first fixed pulley 9 and the second fixed pulley 10 are arranged at intervals in the horizontal direction, and the elevator monitoring sensor is located at a lower center position between the first fixed pulley 9 and the second fixed pulley 10.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A hoist monitoring sensor, characterized in that: include: A base body, the base body is suitable for fixed installation in a mine, and the base body comprises a load-bearing sleeve; Piezoelectric ceramic, the piezoelectric ceramic is cylindrical and sleeved on the load-bearing sleeve, and the piezoelectric ceramic is electrically connected to a first signal transmission line; A rolling sleeve is pivotally mounted on the piezoelectric ceramic around the axis of the load-bearing sleeve, and the rolling sleeve is used for winding the steel wire rope of the hoist.

2. The elevator monitoring sensor according to claim 1, characterized in that: The elevator monitoring sensor also includes: An insulating ring plate, the insulating ring plate is coaxially fixed on the outer peripheral surface of the rolling sleeve; An inner friction plate, wherein the inner friction plate is fixed on the outer peripheral surface of the insulating ring plate; An outer friction plate is fixed on the base, there are at least three outer friction plates and they are arranged at intervals along the circumference of the load-bearing sleeve, the circumferential dimensions of all the outer friction plates decrease successively along the circumference of the load-bearing sleeve, when the rolling sleeve rotates around the axis of the load-bearing sleeve, the inner friction plate can generate electricity by friction with any of the outer friction plates, and any of the outer friction plates is electrically connected to a second signal transmission line.

3. The elevator monitoring sensor according to claim 2, characterized in that: The inner friction plate is a polyimide film, and the outer friction plate comprises a copper plate.

4. The elevator monitoring sensor according to claim 2, characterized in that: The base also includes a shell, which surrounds a cylindrical chamber. The load-bearing sleeve is connected to the shell and is partially located in the cylindrical chamber. The insulating ring plate and the inner friction plate are both located in the cylindrical chamber. The outer friction plate is bonded to the inner circumferential surface of the cylindrical chamber.

5. The elevator monitoring sensor according to claim 4, characterized in that: The shell includes a sleeve and a cover plate, wherein the cover plate is connected to a first end of the sleeve and closes a first opening of the sleeve, and an axial end of the load-bearing sleeve extends into the sleeve from a second opening of the sleeve and is connected to the cover plate.

6. The elevator monitoring sensor according to claim 5, characterized in that: A first through hole communicating with the inner cavity of the load-bearing sleeve is provided on the wall of the load-bearing sleeve, a second through hole communicating with the inner cavity of the load-bearing sleeve is provided on the cover plate, and the first signal transmission line extends out of the housing through the first through hole and the second through hole; And / or, the cover plate is provided with a third through hole communicating with the cylindrical chamber, and the second signal transmission line extends out of the shell through the third through hole.

7. The elevator monitoring sensor according to claim 5, characterized in that: The base body also includes an annular baffle, which is connected to the second end of the sleeve, and a portion of the rolling sleeve extends into the cylindrical chamber through the inner hole of the annular baffle.

8. The elevator monitoring sensor according to claim 1, characterized in that: The hoist monitoring sensor also includes a bearing, wherein: The bearing is coaxially matched between the load-bearing sleeve and the rolling sleeve, and / or the bearing is coaxially matched between the piezoelectric ceramic and the rolling sleeve.

9. The elevator monitoring sensor according to claim 1, characterized in that: The base body also includes a first baffle and a second baffle arranged at intervals along the axial direction of the bearing sleeve. The first baffle and the second baffle are fixedly connected to the outer circumferential surface of the bearing sleeve, and the rolling sleeve is located between the first baffle and the second baffle.

10. A mine hoist, characterized in that: It includes a wire rope, a first fixed pulley, a second fixed pulley and a hoist monitoring sensor as described in any one of claims 1 to 9, wherein the wire rope transmission is fitted on each of the first fixed pulley, the roller sleeve and the second fixed pulley, and the extension direction of the portion of the wire rope located between the first fixed pulley and the roller sleeve forms an angle of 120° with the extension direction of the portion of the wire rope located between the second fixed pulley and the roller sleeve.

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