Safety protection device of efficient elevator for underground coal mine

Abstract

The utility model relates to the technical field of protection devices, and discloses an efficient elevator safety protection device for an underground coal mine, which comprises a box body, a brake component and a control component, a lifting steel cable is arranged on the top surface of the box body, a PLC (programmable logic controller) is arranged on the top surface of the box body, and the brake component is used for braking the box body. The braking assembly comprises a fixed bin, the fixed bin is fixedly installed on the top face of the box body, the box body, the lifting steel cable, the fixed bin, a movable column, a linkage plate and a linkage frame are used in cooperation, the braking protection effect on the box body can be achieved, when the steel cable is broken, a triangular prism frame is made to keep tension through a linkage mechanism, and the braking effect of the box body is improved. The falling box body pushes the triangular prism frame to be switched from the vertical state to the wedging state, the contact face is enlarged, the friction coefficient is remarkably increased, the braking effect in the mine rock wall environment under the humid, uneven and dust accumulation conditions is improved, the braking distance is shortened, accidents are prevented, and practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protection device, especially to a high -efficient hoist safety protection device for coal mine underground. BACKGROUND

[0002] The coal mine hoist connects the staff in the mine with the outside world, and once the coal mine hoist has an accident, the consequences are unpredictable, the safety performance of the coal mine hoist is more and more important, and people pay more and more attention to the safety effect of the coal mine hoist, so the coal mine hoist needs to be protected.

[0003] The existing coal mine hoist self-locking mechanism (announcement number: CN216512304U) has at least the following disadvantages:

[0004] In the above patent, only unilateral braking is carried out through the left friction block, and it is difficult to guarantee the contact area, at the same time, the roughness of the mine wall, whether there is water and dust and other factors directly affect the braking force, it is difficult to guarantee the friction resistance between the box body and the mine wall, and it is necessary to propose a high-efficiency hoist safety protection device for coal mine underground to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a high-efficiency hoist safety protection device for coal mine underground.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A high-efficiency hoist safety protection device for coal mine underground, comprising a box body, the top surface of the box body is provided with a lifting steel cable, the top surface of the box body is provided with a PLC controller, further comprising: a brake assembly, the brake assembly is used for braking the box body, the brake assembly comprises: a fixed bin, the fixed bin is fixedly installed on the top surface of the box body, the top surface of the fixed bin is provided with a first circular through hole, the inner circular wall surface of the first circular through hole is movably sleeved with a moving column, the top surface of the moving column is fixedly installed with the lifting steel cable, the outer circular wall surface of the moving column is movably sleeved with a spring, the inside of the fixed bin is provided with a linkage plate, the inside of the linkage plate is movably sleeved with two linkage frames, the top surface of the box body is fixedly installed with a plurality of supporting feet, the supporting feet are movably sleeved with the linkage frames, one end of the linkage frame is rotatably connected with a connecting arm, both sides of the box body are fixedly installed with two fixed feet respectively, both sides of the fixed foot are provided with a second circular through hole, the inner circular wall surface of the second circular through hole is movably sleeved with a triangular prism frame, one end of the triangular prism frame is fixedly installed with a pulling plate, the pulling plate is movably sleeved with the connecting arm, one side of the fixed foot is fixedly installed with a limiting plate.

[0008] As a further scheme of the present utility model, the external rotatable connection of the three-prism frame has a rotating plate, and a plurality of tooth grooves are formed on one side of the rotating plate.

[0009] As a further scheme of the present utility model, the external circular wall surface of the linkage frame is fixedly sleeved with two limiting rings.

[0010] As a further scheme of the present utility model, the two sides of the fixed bin are respectively provided with rectangular grooves, the internal fixed sleeve of the rectangular groove is provided with a laser displacement sensor, the top surface of the fixed bin is fixedly installed with a PLC controller, and the laser displacement sensor is electrically connected with the PLC controller.

[0011] As a further scheme of the present utility model, the top surface of the fixed bin is provided with a rectangular through hole, the internal fixed sleeve of the rectangular through hole is provided with a contact displacement sensor, the lifting rod of the contact displacement sensor abuts against the top surface of the linkage plate, and the contact displacement sensor is electrically connected with the PLC controller.

[0012] As a further scheme of the present utility model, the top surface of the fixed bin is fixedly installed with a storage battery and a remote communication module, and the storage battery and the remote communication module are electrically connected with the PLC controller.

[0013] As a further scheme of the present utility model, the top surface is fixedly installed with a protective bin and two side protective covers, and the protective bin is fixedly sleeved with the fixed bin.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. Through the mutual cooperation of the box, the lifting steel cable, the fixed bin, the moving column, the spring, the linkage plate and the linkage frame, the braking protection effect of the box can be achieved, when the steel cable is broken, the three-prism frame is kept in tension through the linkage mechanism, the three-prism frame is switched from the vertical state to the "wedge" state by the falling box, the contact surface is expanded, the friction coefficient is significantly improved, the braking effect in the mine rock wall environment under the conditions of moisture, unevenness and dust accumulation is improved, the braking distance is reduced, accidents are prevented, and it is more practical.

[0016] 2. Through the contact displacement sensor, when the linkage plate moves downward, the detection rod is elongated, data is transmitted and alarmed through the remote communication module, the contact displacement sensor and the remote communication module are closed, there is no poor contact, short circuit and alarm signal failure, emergency power supply is realized through the storage battery, and the three-prism frame after rotation is limited through the limiting plate, so that the included angle between the three-prism frame and the box is kept, and excessive rotation is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The utility model provides a kind of overall structure schematic diagram of safety protection device of efficient hoist for coal mine underground is proposed.

[0018] Figure 2 The utility model provides a kind of box structure schematic diagram of safety protection device of efficient hoist for coal mine underground is proposed.

[0019] Figure 3 For Figure 2 The local structure schematic diagram of middle A is shown in the figure.

[0020] Figure 4 For Figure 2 The local structure schematic diagram of middle B is shown in the figure.

[0021] Figure 5 The utility model provides a kind of linkage plate structure schematic diagram of safety protection device of efficient hoist for coal mine underground is proposed.

[0022] Figure 6 The utility model provides a kind of three-prism frame structure schematic diagram of safety protection device of efficient hoist for coal mine underground is proposed.

[0023] Figure 7 The utility model provides a kind of rotary plate structure schematic diagram of safety protection device of efficient hoist for coal mine underground is proposed.

[0024] In the figure: 1, box body;2, hoist cable;3, fixed bin;4, moving column;5, spring;6, linkage plate;7, linkage frame;8, connecting arm;9, support foot;10, fixed foot;11, three-prism frame;12, pull plate;13, limit plate;14, rotary plate;15, remote communication module;16, contact type displacement sensor;17, laser displacement sensor;18, battery;19, protection bin;20, side protection cover;21, limit ring. Specific implementation

[0025] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation.

[0026] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" is the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "installation", "setting", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according of the specific circumstances.

[0028] Referring to Figures 1-7 A kind of high-efficiency hoist safety protection device for underground coal mine, comprising: box 1, the top surface of box 1 is provided with lifting steel cable 2, the top surface of box 1 is provided with PLC controller, further comprising: brake assembly, brake assembly is used to brake box 1, brake assembly includes: fixed bin 3, fixed bin 3 is fixedly installed on the top surface of box 1, the top surface of fixed bin 3 is opened with first circular through-hole, the inner circular wall surface of first circular through-hole movably sleeved with moving column 4, the top surface of moving column 4 is fixedly installed with lifting steel cable 2, the outer circular wall surface of moving column 4 movably sleeved with spring 5, the inside of fixed bin 3 is provided with linkage plate 6, the inside of linkage plate 6 movably sleeved with two linkage frames 7, the top surface of box 1 is fixedly installed with several support feet 9, support foot 9 is movably sleeved with linkage frame 7, one end of linkage frame 7 is rotatably connected with connecting arm 8, the both sides of box 1 are fixedly installed with two fixed feet 10 respectively, the both sides of fixed foot 10 are opened with second circular through-hole respectively, the inner circular wall surface of second circular through-hole movably sleeved with three-prism frame 11, one end of three-prism frame 11 is fixedly installed with pull plate 12, pull plate 12 is movably sleeved with connecting arm 8, the side of fixed foot 10 is fixedly installed with limit plate 13, the outside of three-prism frame 11 is rotatably connected with rotating plate 14, the side of rotating plate 14 is opened with several tooth grooves. The outer circular wall surface of linkage frame 7 is fixedly sleeved with two limit rings 21.

[0029] When using, when lifting steel cable 2 breaks, loses the pulling force upward, spring 5 pushes moving column 4 to push linkage plate 6 and linkage frame 7 downward, linkage frame 7 rotates under the support of support foot 9, rotating linkage frame 7 pulls connecting arm 8 and pull plate 12 to drive three-prism frame 11 to rotate, rotating plate 14 is resisted on the inner wall of mine, at this moment, box 1 can fall, the box 1 that moves downward drives three-prism frame 11 to switch from vertical state to "wedge" state of obliquely inserting into shaft wall, expands contact surface, significantly improves friction coefficient.

[0030] In this embodiment, rectangular slots are respectively opened on both sides of the fixed chamber 3. A laser displacement sensor 17 is fixedly sleeved inside the rectangular slot. A PLC controller is fixedly installed on the top surface of the fixed chamber 3. The laser displacement sensor 17 is electrically connected to the PLC controller. A rectangular through hole is opened on the top surface of the fixed chamber 3. A contact displacement sensor 16 is fixedly sleeved inside the rectangular through hole. The lifting rod of the contact displacement sensor 16 abuts against the top surface of the linkage plate 6. The contact displacement sensor 16 is electrically connected to the PLC controller.

[0031] In use, the contact displacement sensor 16 extends its detection rod when the linkage plate 6 moves down, and the data is transmitted to the alarm through the remote communication module 15. The limit plate 13 limits the rotation of the triangular prism frame 11, keeping it at a 60-degree angle with the box 1 to prevent excessive rotation.

[0032] In this embodiment, a battery 18 and a remote communication module 15 are fixedly installed on the top surface of the fixed compartment 3, and both the battery 18 and the remote communication module 15 are electrically connected to the PLC controller. A protective compartment 19 and two side protective covers 20 are fixedly installed on the top surface of the fixed compartment 3, and the protective compartment 19 is fixedly sleeved with the fixed compartment 3.

[0033] In use, emergency power is supplied by the storage battery 18, and protection is provided by the protective compartment 19 and the side protective cover 20 to avoid damage.

[0034] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0035] When the lifting steel cable 2 is in the process of pulling the moving column 4 to drive the box body 1 to move upward, the pulled moving column 4 extrudes the spring 5, and the three-prism frame 11 keeps in the vertical state and does not collide with the inner wall of the mine, when the lifting steel cable 2 is broken, the upward pulling force is lost, the spring 5 pushes the moving column 4 to push the linkage plate 6 and the linkage frame 7 downward, the linkage frame 7 is rotated under the support of the support foot 9, the rotating linkage frame 7 pulls the connecting arm 8 and the pulling plate 12 to drive the three-prism frame 11 to rotate, the rotating plate 14 is abutted against the inner wall of the mine, at this time, the box body 1 can fall, the falling box body 1 drives the three-prism frame 11 to switch from the vertical state to the "wedge" state of being obliquely inserted into the wall, the contact area is enlarged, the friction coefficient is significantly improved, the rotating plate 14 can be selected to be disassembled during installation (designed to be disassembled during production), the rotating plate 14 can be appropriately increased in size, if the rotating plate 14 is not disassembled, the tooth groove can be in contact and friction with the inner wall of the mine, the box body 1 is stopped by the cooperation of the rotating plate 14 and the three-prism frame 11 (the three-prism frame 11 always keeps tension under the linkage action of the spring 5, the linkage frame 7 and the connecting arm 8), the braking protection effect of the box body 1 is realized, when the steel cable 2 is broken, the three-prism frame 11 keeps tension through the linkage mechanism, the three-prism frame 11 is switched from the vertical state to the "wedge" state by the falling box body 1, the contact area is enlarged, the friction coefficient is significantly improved, the braking effect in the mine wall environment under the conditions of moisture, unevenness and dust accumulation is improved, the braking distance is reduced, the accident is prevented, and the device is practical.

[0036] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A safety protection device for a high-efficiency hoist in a coal mine, comprising a housing (1), wherein a hoisting steel cable (2) is provided on the top surface of the housing (1), and a PLC controller is provided on the top surface of the housing (1), characterized in that, Also includes: A braking assembly is used to brake the housing (1). The braking assembly includes: a fixed chamber (3), which is fixedly installed on the top surface of the housing (1). The top surface of the fixed chamber (3) has a first circular through hole. A movable column (4) is movably sleeved on the inner wall of the first circular through hole. The top surface of the movable column (4) is fixedly installed with the lifting steel cable (2). A spring (5) is movably sleeved on the outer wall of the movable column (4). A linkage plate (6) is provided inside the fixed chamber (3). Two linkage frames (7) are movably sleeved inside the linkage plate (6). The housing (1) Several support feet (9) are fixedly installed on the top surface of the box (1). The support feet (9) are movably connected to the linkage frame (7). One end of the linkage frame (7) is rotatably connected to a connecting arm (8). Two fixed feet (10) are fixedly installed on both sides of the box (1). A second circular through hole is opened on both sides of the fixed feet (10). A triangular prism frame (11) is movably connected to the inner circular wall of the second circular through hole. A pull plate (12) is fixedly installed on one end of the triangular prism frame (11). The pull plate (12) is movably connected to the connecting arm (8). A limit plate (13) is fixedly installed on one side of the fixed feet (10).

2. The safety protection device for a high-efficiency hoist in an underground coal mine according to claim 1, characterized in that, The triangular prism frame (11) is rotatably connected to a rotating plate (14), and a number of toothed grooves are provided on one side of the rotating plate (14).

3. The safety protection device for a high-efficiency hoist in a coal mine according to claim 1, characterized in that, The outer circular wall of the linkage frame (7) is fixedly fitted with two limiting rings (21).

4. A safety protection device for a high-efficiency hoist in an underground coal mine according to claim 1, characterized in that, The fixed chamber (3) has rectangular slots on both sides, and a laser displacement sensor (17) is fixedly sleeved inside the rectangular slot. A PLC controller is fixedly installed on the top surface of the fixed chamber (3), and the laser displacement sensor (17) is electrically connected to the PLC controller.

5. A safety protection device for a high-efficiency hoist in a coal mine according to claim 1, characterized in that, The top surface of the fixed chamber (3) is provided with a rectangular through hole, and a contact displacement sensor (16) is fixedly sleeved inside the rectangular through hole. The lifting rod of the contact displacement sensor (16) abuts against the top surface of the linkage plate (6), and the contact displacement sensor (16) is electrically connected to the PLC controller.

6. A safety protection device for a high-efficiency hoist in a coal mine according to claim 1, characterized in that, A battery (18) and a remote communication module (15) are fixedly installed on the top surface of the fixed compartment (3). Both the battery (18) and the remote communication module (15) are electrically connected to the PLC controller.

7. A safety protection device for a high-efficiency hoist in an underground coal mine according to claim 1, characterized in that, The top surface of (1) is fixedly equipped with a protective chamber (19) and two side protective covers (20), and the protective chamber (19) is fixedly connected to the fixed chamber (3).

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