Underground belt conveyor safety device based on mining intrinsic safety type audible and visual alarm

Abstract

The invention relates to an underground belt conveyor safety device based on a mining intrinsic safety type audible and visual alarm. The underground belt conveyor safety device comprises a belt conveyor, a pull rope type emergency stop switch and the audible and visual alarm. A bias motion mechanism is arranged under the upper belt surface of the conveying belt; the deflection mechanism comprises a mounting plate, blocking and pushing assemblies are symmetrically arranged at the ends of the mounting plate respectively, each blocking and pushing assembly comprises a Z-shaped plate, a side blocking roller capable of making rolling contact with the side edge of the deflected conveying belt is longitudinally erected on the inner inclined portion of each Z-shaped plate, pressing assemblies are oppositely arranged on the outer inclined face of each Z-shaped plate, and each pressing assembly comprises a pressing rod used for elastically pressing a pull rope in a vertically-downward mode. The top of the pressing rod is provided with a wedge-shaped surface which is slidably attached to the outer inclined surface of the Z-shaped plate, and the outer vertical surface of the pressing rod is oppositely provided with a plugging assembly used for controlling on and off of the audible and visual alarm. According to the safety device, the deflection state of the conveying belt can be automatically detected, sudden stop and alarm are achieved through mechanical transmission, and therefore equipment damage and potential safety hazards possibly caused by continuous deflection of the conveying belt are effectively prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of mine safety devices, and in particular relates to an underground belt conveyor safety device based on a mine intrinsically safe sound and light alarm. Background Art

[0002] The mine intrinsically safe sound and light alarm is used as information prompt, safety warning and language alarm, and is suitable for safety protection alarm devices for passengers, hoisting, transportation and other equipment in coal mines. It is mainly composed of a battery pack, a control main board, a display light board and a waterproof speaker. When it is in the alarm state, in addition to the voice alarm sound from the waterproof speaker, the display light board also displays the alarm content.

[0003] Belt conveyors are important equipment with the widest range of use in coal mines. When in use, they are bound to deviate. If they deviate, many hazards will occur: aggravating the wear of the belt edges and shortening the service life; increasing the axial force on the drum and rollers, causing bearing damage; causing the belt to roll over or tear longitudinally, creating a safety hazard; and causing coal dust to fly, causing underground environmental pollution.

[0004] In the prior art, if the coal mine underground working inspectors find that the belt conveyor has deviated, they will manually press the pull rope of the pull rope type emergency stop switch pre-installed on the side of the belt conveyor to make the belt conveyor stop quickly, thereby protecting the safety of personnel and equipment; however, this shutdown method that only relies on manual inspection and manual operation cannot achieve timely shutdown when deviation occurs for the large number of belt conveyors in coal mines, which will damage the equipment to a certain extent and pose a safety hazard. Therefore, it is necessary to design an underground belt conveyor safety device based on a mine-used intrinsically safe sound and light alarm, so that when deviation occurs, it can realize the safety function of automatically triggering the emergency stop switch and alarm. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an underground belt conveyor safety device based on a mining intrinsically safe sound and light alarm. The specific technical solution is as follows: The present invention provides an underground belt conveyor safety device based on a mining intrinsically safe sound and light alarm, comprising a belt conveyor composed of a transverse support frame, longitudinal support legs and a conveyor belt, wherein pull rope type emergency stop switches are symmetrically arranged on the outer side surface of the transverse support frame at one end of the belt conveyor, and a reset button is arranged on the emergency stop switch, and sound and light alarms are symmetrically suspended below the pull ropes of the two emergency stop switches; a deflection mechanism is arranged directly below the upper belt surface of the conveyor belt; The deflection mechanism comprises a mounting plate horizontally mounted on the top surfaces of two cross braces, and push-blocking assemblies are symmetrically arranged at the ends of the mounting plate, and the push-blocking assemblies comprise a Z-shaped plate for elastically displacing laterally as the conveyor belt deflects, and a side stop roller which can roll with the side edge of the conveyor belt after deflection is longitudinally mounted on the inner inclined portion of the Z-shaped plate, and a pressing assembly is arranged opposite to the outer inclined surface of the Z-shaped plate, and the pressing assembly comprises a pressure rod for elastically pressing the pull rope vertically downward, and a wedge-shaped surface which is slidably attached to the outer inclined surface of the Z-shaped plate is arranged on the top of the pressure rod, and a plug-in assembly for controlling the opening and closing of the sound and light alarm is arranged opposite to the outer facade of the pressure rod; The conveyor belt is divided into a normal operating state and a deflected operating state. When in the normal operating state, the side stop roller is not in rolling contact with the side edge of the conveyor belt, and the emergency stop switch and the sound and light alarm are not activated; when in the deflected operating state, the side stop roller is in rolling contact with the side edge of the conveyor belt, and drives the Z-shaped plate to elastically displace laterally, and the outer inclined surface of the Z-shaped plate and the wedge surface of the pressure rod slide in an offset manner, causing the pressure rod to elastically contact the pull rope vertically downward to activate the emergency stop switch to shut down the belt conveyor, and the pressure rod synchronously drives the connector assembly to activate the sound and light alarm.

[0006] As a preferred technical solution of the present invention, the push-block assembly includes a T-shaped frame which is elastically slidably connected to the top surface of the mounting plate in a transverse direction, a vertical support rod of a Z-shaped structure is suspended in the middle of the top surface of the T-shaped frame, the top end of the vertical support rod is vertically fixed to the inner end of the waist of the Z-shaped plate, a U-shaped frame is installed on the inclined portion of the Z-shaped plate in a downwardly inclined manner, and side stop rollers are symmetrically arranged longitudinally on the ends of the U-shaped frame.

[0007] As a preferred technical solution of the present invention, the pressing assembly includes support blocks vertically fixed to the side surfaces of the cross support frame, the top surfaces of the two support blocks are respectively and vertically symmetrically connected with guide support rods, a rectangular plate is axially slidably inserted between the two guide support rods, a spring 2 is axially sleeved on the guide support rod, the top end of the spring 2 is connected to the rectangular plate, and the bottom end is connected to the corresponding support block; a pressure rod is inserted in the vertical gap between the two support blocks, the upper part of the pressure rod is detachably plugged and fixed to the middle part of the rectangular plate, an arc groove is opened at the bottom end, and the arc groove is located directly above the pull rope.

[0008] As a preferred technical solution of the present invention, a shielding plate is suspended directly above the pull rope and is detachably and vertically connected to the corresponding side of the cross support frame; the gap at the bottom end of the pressure rod passes through a through hole opened on the shielding plate.

[0009] As a preferred technical solution of the present invention, the connector assembly includes bearing seats fixedly arranged vertically and relatively to the end faces of the corresponding support blocks, a rotating shaft is connected through the two bearing seats for transmission, a gear is fixedly connected axially in the middle of the rotating shaft, and the gear is meshed and connected with the straight teeth arranged longitudinally on the outer surface of the pressure rod; an extension rod is axially connected to one end of the rotating shaft, a swing arm is axially sleeved on the end of the extension rod, and a lever is vertically connected to the free end of the swing arm; a dovetail groove is suspended on the top surface of the baffle plate along its short side direction and is located directly below the swing arm, and the A movable block is engaged with the dovetail groove in a transversely sliding manner, and a blocking rod that is mutually abutted with the shifting rod is vertically connected to the top surface of the movable block, and a spring three is vertically connected between the inner end surface of the movable block and the inner end surface of the dovetail groove, and a guide plug is embedded in the outer end surface of the movable block; a fixed block is detachably engaged with the opening at the outer end of the dovetail groove, and a pair of guide slots that can be plugged and matched with the guide plug are embedded in the inner end surface of the fixed block, and the two guide slots are respectively connected in series with the power supply circuit placed in the sound and light alarm through wires adapted thereto, and the two wires are externally sleeved and matched with a sheath; When the conveyor belt is in normal operation, the guide plug is not plugged into the guide slot; when the conveyor belt is in deflection operation, the pressure rod drives the gear and the swing arm to rotate synchronously during the vertical downward movement, and the lever of the swing arm pushes the baffle bar of the movable block to slide outward, causing the guide plug to be plugged into the guide slot to form a closed circuit and connect the sound and light alarm to emit a sound and light alarm.

[0010] As a preferred technical solution of the present invention, a magnet sheet is embedded between the two guide slots, and a magnet sheet is also embedded in the middle of the guide plug opposite thereto.

[0011] As a preferred technical solution of the present invention, a blocking block is vertically fixed along the short side direction of the middle part of the top surface of the mounting plate, and sliding components are symmetrically arranged on both sides of the blocking block; the sliding components include T-shaped slide rails horizontally arranged along the long axis of the top surface of the mounting plate, and a slider is connected to the slide rail in a transverse sliding manner, a T-shaped frame is arranged between the top surfaces of the two sliders, and the vertical part of the T-shaped frame is connected to an elastic component transversely arranged on the outside of the top surface of the mounting plate.

[0012] As a preferred technical solution of the present invention, the elastic component includes a limit block vertically fixed to the end of the top surface of the mounting plate, a guide rod is vertically connected to the middle of the inner vertical surface of the limit block, the inner end gap of the guide rod passes through the vertical part of the T-shaped frame, a spring is axially sleeved on the guide rod, the outer end of the spring is connected to the limit block, and the inner end of the spring is connected to the vertical part of the T-shaped frame.

[0013] As a preferred technical solution of the present invention, the end of the U-shaped frame is connected to an adjustment frame with an inverted U-shaped structure through bolts adapted thereto, and a side stop roller is vertically arranged in the middle of the top surface of the adjustment frame.

[0014] As a preferred technical solution of the present invention, the sound and light alarm is supported and connected by a cantilever plate vertically installed on the outer facade of the corresponding longitudinal support leg; the outer shell of the sound and light alarm is a hollow cubic structure, with a light board embedded in the front and a waterproof speaker embedded in one side, and a control button is installed on one side of the light board.

[0015] The beneficial effects of the present invention are: The safety device of the present invention can automatically detect the deflection state of the conveyor belt through the deflection mechanism, especially the push assembly and the pressing assembly therein; when the conveyor belt deflects, the side stop roller will roll and contact with the side edge of the deflected conveyor belt, thereby triggering subsequent actions; Once the conveyor belt deflects, the side roller will drive the Z-shaped plate to elastically displace laterally. This displacement causes the outer inclined surface of the Z-shaped plate to slide displaced from the wedge surface of the pressure rod, and then the pressure rod elastically touches the pull rope vertically downward. This action will activate the emergency stop switch and quickly shut down the belt conveyor, thereby effectively preventing equipment damage and safety hazards that may be caused by continuous deflection of the conveyor belt; When the pressure rod touches the pull rope, it will also synchronously drive the connector assembly to activate the sound and light alarm. The activation of the sound and light alarm can immediately provide obvious audio and visual warnings to underground workers, helping them to quickly identify the problem status of the belt conveyor and take corresponding safety measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural schematic diagram of the present invention is shown; Figure 2 The schematic diagram of the structure of the assembly of the sound and light alarm, the deflection mechanism and the emergency stop switch in the present invention is shown; Figure 3 A schematic diagram showing the structure of the assembly of the mounting plate and the thrust block assembly in the present invention is shown; Figure 4 A schematic diagram showing the structure of the assembly of the pressing assembly and the emergency stop switch in the present invention is shown; Figure 5 Shows Figure 4 A magnified view of the structure of the middle A part; Figure 6 A schematic diagram of the structure of the shielding plate in the present invention is shown; Figure 7 A schematic diagram showing the structure of the assembly of the connector assembly and the sound and light alarm in the present invention is shown; Figure 8 Shows Figure 7 A magnified view of the structure of the middle B area; Fig. 9 A partial structural schematic diagram of the connector assembly in the present invention is shown; Fig.10 Shows Fig. 9A magnified view of the structure of the middle C part; Fig.11 A partial structural schematic diagram of the deflection mechanism in the present invention is shown; Fig.12 A schematic diagram of the overall structure of the present invention from another perspective is shown.

[0017] As shown in the figure: 1. Belt conveyor; 11. Horizontal support frame; 12. Conveyor belt; 13. Longitudinal support leg; 2. Sound and light alarm; 21. Waterproof speaker; 22. Light board; 23. Control button; 24. Suspension plate; 3. Biasing mechanism; 31. Mounting plate; 311. Block block; 32. Push-block assembly; 321. T-shaped frame; 322. Vertical support rod; 323. Z-shaped plate; 324. U-shaped frame; 325. Side roller; 3251. Adjustment frame; 326. Sliding assembly; 3261. Slide rail; 3262. Sliding block; 327. Elastic assembly; 3271. Limit block; 3272. Guide rod; 3273. Spring 1; 33. Press assembly; 331. Support block; 3 32. Guide support rod; 333. Rectangular plate; 334. Spring 2; 335. Pressure rod; 3351. Wedge-shaped surface; 3352. Arc groove; 3353. Straight teeth; 34. Shield plate; 341. Through hole; 35. Connector assembly; 351. Bearing seat; 352. Rotating shaft; 3521. Extension rod; 353. Gear; 354. Swing arm; 3541. Push rod; 355. Dovetail groove; 356. Sheath; 3561. Wire; 357. Movable block; 3571. Guide plug; 3572. Spring 3; 3573. Stop rod; 358. Fixed block; 3581. Guide slot; 359. Magnet; 4. Emergency stop switch; 41. Pull rope; 42. Reset button. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Embodiment 1

[0020] In order to solve the technical problems in the background technology, the following underground belt conveyor safety device based on the mine intrinsically safe sound and light alarm is provided: Combination Figures 1 to 4 as well as Fig.11 , Fig.12As shown, an underground belt conveyor safety device based on a mining intrinsically safe sound and light alarm comprises a belt conveyor 1 composed of a transverse support frame 11, longitudinal support legs 13 and a conveyor belt 12, wherein emergency stop switches 4 of a pull rope 41 type are symmetrically arranged on the outer side surfaces of the transverse support frame 11 at one end of the belt conveyor 1, and a reset button 42 is arranged on the emergency stop switch 4, and sound and light alarms 2 are symmetrically suspended below the pull ropes 41 of the two emergency stop switches 4; a deflection mechanism 3 is arranged directly below the upper belt surface of the conveyor belt 12; The deflection mechanism 3 includes a mounting plate 31 horizontally mounted on the top surfaces of two cross braces 11, and push-blocking assemblies 32 are symmetrically arranged at the ends of the mounting plate 31, and the push-blocking assemblies 32 include a Z-shaped plate 323 for elastically displacing laterally as the conveyor belt 12 deflects, and a side stop roller 325 that can roll with the side edge of the deflected conveyor belt 12 is longitudinally mounted on the inner inclined portion of the Z-shaped plate 323, and a pressing assembly 33 is arranged opposite to the outer inclined surface of the Z-shaped plate 323, and the pressing assembly 33 includes a pressure rod 335 for elastically contacting and pressing the pull rope 41 vertically downward, and a wedge-shaped surface 3351 that is slidably attached to the outer inclined surface of the Z-shaped plate 323 is arranged on the top of the pressure rod 335, and a plug-in assembly 35 for controlling the opening and closing of the sound and light alarm 2 is arranged opposite to the outer facade of the pressure rod 335; The conveyor belt 12 is divided into a normal operating state and a deflected operating state. When in the normal operating state, the side stop roller 325 does not roll in contact with the side edge of the conveyor belt 12, and the emergency stop switch 4 and the sound and light alarm 2 are not activated; when in the deflected operating state, the side stop roller 325 rolls in contact with the side edge of the conveyor belt 12, and drives the Z-shaped plate 323 to elastically displace laterally, and the outer inclined surface of the Z-shaped plate 323 and the wedge surface 3351 of the pressure rod 335 slide in an offset manner, causing the pressure rod 335 to elastically contact the pull rope 41 vertically downward to activate the emergency stop switch 4 to shut down the belt conveyor 1, and the pressure rod 335 synchronously drives the connector assembly 35 to activate the sound and light alarm 2.

[0021] By adopting the above technical solution, the safety device can automatically detect the deflection state of the conveyor belt 12 through the deflection mechanism 3, especially the push assembly 32 and the pressing assembly 33 therein; when the conveyor belt 12 deflects, the side stop roller 325 will roll and contact with the side edge of the deflected conveyor belt 12, thereby triggering subsequent actions; Once the conveyor belt 12 deflects, the side blocking roller 325 will drive the Z-shaped plate 323 to elastically displace laterally. This displacement causes the outer inclined surface of the Z-shaped plate 323 and the wedge surface 3351 of the pressure rod 335 to slide displacedly, thereby causing the pressure rod 335 to elastically contact the pull rope 41 vertically downward. This action will activate the emergency stop switch 4 and quickly shut down the belt conveyor 1, thereby effectively preventing equipment damage and safety hazards that may be caused by the continuous deflection of the conveyor belt 12. When the pressure rod 335 contacts and presses the pull rope 41, it will also synchronously drive the connector assembly 35 to start the sound and light alarm 2. The activation of the sound and light alarm 2 can immediately provide obvious audio-visual warnings to the underground workers, helping them to quickly identify the problem state of the belt conveyor 1 and take corresponding safety measures. A reset button 42 is provided on the emergency stop switch 4, so that after solving the deflection problem of the conveyor belt 12, the emergency stop switch 4 can be conveniently reset manually to restart the belt conveyor 1; this design ensures the safe use and convenient operation of the device.

[0022] Embodiment 2

[0023] Combination Figure 2 , Figure 3 , Fig.11 and Fig.12 As shown, based on the above embodiment, this embodiment further provides the following contents: In this embodiment, if Figure 2 , Figure 3 , Fig.11 and Fig.12 As shown, the push-blocking assembly 32 includes a T-shaped frame 321 which is elastically slidably connected to the top surface of the mounting plate 31 in a transverse direction, a vertical support rod 322 of a Z-shaped structure is suspended in the middle of the top surface of the T-shaped frame 321, the top end of the vertical support rod 322 is vertically fixed to the inner end of the waist of the Z-shaped plate 323, a U-shaped frame 324 is installed on the inner inclined portion of the Z-shaped plate 323 at an angle downward, and side stop rollers 325 are longitudinally and symmetrically arranged at the ends of the U-shaped frame 324.

[0024] By adopting the above technical solution, the push-stop assembly 32 is connected to the mounting plate 31 through the T-shaped frame 321 in a transverse elastic sliding manner, thereby realizing sensitive detection of the deflection state of the conveyor belt 12. When the conveyor belt 12 deflects, its side edge will contact the side stop roller 325. Since the side stop roller 325 can roll, the friction resistance can be reduced to avoid damage to the conveyor belt 12, while ensuring that the deflection state is accurately captured. The T-shaped frame 321 is a carrier of elastic sliding connection, and its structure is stable and can withstand the lateral force generated when the conveyor belt deflects. When the side stop roller 325 is pushed by the side edge of the conveyor belt 12, the T-shaped frame 321 will drive the entire stop and push assembly 32 to perform lateral elastic displacement. This displacement is stable and controllable, ensuring the accuracy of subsequent actions; The vertical support rod 322 serves as a supporting structure for the Z-shaped plate 323. Its Z-shaped design enables the Z-shaped plate 323 to be stably suspended above the T-shaped frame 321. At the same time, the vertical support rod 322 also plays a guiding role, ensuring that the Z-shaped plate 323 can maintain a stable movement trajectory during lateral displacement.

[0025] like Figure 3 and Fig.11 As shown, a blocking block 311 is vertically fixed along the short side direction in the middle of the top surface of the mounting plate 31, and sliding components 326 are symmetrically arranged on both sides of the blocking block 311; the sliding components 326 include T-shaped slide rails 3261 horizontally arranged along the long axis of the top surface of the mounting plate 31, and sliders 3262 are connected to the slide rails 3261 in a transverse sliding manner. A T-shaped frame 321 is arranged between the top surfaces of the two sliders 3262, and the vertical portion of the T-shaped frame 321 is connected to an elastic component 327 transversely arranged on the outer side of the top surface of the mounting plate 31.

[0026] By adopting the above technical solution, the sliding assembly 326 is mainly composed of a T-shaped slide rail 3261 and a slider 3262. The slide rail 3261 is horizontally arranged along the long axis of the top surface of the mounting plate 31. Such a layout ensures that the T-shaped frame 321 and other components thereon can slide horizontally on the mounting plate 31 stably and smoothly. A T-shaped frame 321 is arranged between the top surfaces of the two sliders 3262, which means that the T-shaped frame 321 and other components carried by it can slide along the slide rail 3261 as a whole. The sliding assembly 326 not only provides the necessary sliding path for the entire thrust block assembly 32, but also ensures the accuracy and reliability of the mechanical transmission through its stable sliding performance. At the same time, the vertical portion of the T-shaped frame 321 is connected to an elastic component 327 laterally arranged on the outside of the top surface of the mounting plate 31. This design allows the elastic component 327 to provide a certain degree of buffering and resetting when the push-block component 32 is subjected to the force generated by the deflection of the conveyor belt 12.

[0027] like Figure 3 and Fig.11 As shown, the elastic component 327 includes a limit block 3271 vertically fixed to the end of the top surface of the mounting plate 31, and a guide rod 3272 is vertically connected to the middle of the inner vertical surface of the limit block 3271. The inner end gap of the guide rod 3272 passes through the vertical part of the T-shaped frame 321, and a spring 3273 is axially sleeved on the guide rod 3272. The outer end of the spring 3273 is connected to the limit block 3271, and the inner end thereof is connected to the vertical part of the T-shaped frame 321.

[0028] By adopting the above technical solution, when the push-stop assembly 32 is subjected to the force generated by the deflection of the conveyor belt 12 and undergoes lateral elastic displacement, the T-shaped frame 321 will slide along the guide rod 3272. Since the spring 1 3273 is compressed and stored in elastic potential energy, when the conveyor belt 12 no longer applies a deflection force to the push-stop assembly 32, the spring 1 3273 will release its stored elastic potential energy and push the T-shaped frame 321 to reset along the guide rod 3272. This stable reset function ensures that the push-stop assembly 32 can accurately return to the initial position after each deflection, so as to prepare for the next deflection detection. When the conveyor belt 12 deflects and contacts the side roller 325, a certain impact force will be generated. The spring 3273 in the elastic component 327 can effectively absorb and disperse this part of the impact force, playing a role in buffering and vibration reduction. This not only protects the thrust component 32 from impact damage, but also improves the durability and reliability of the entire safety device.

[0029] like Figure 3 and Fig.11 As shown, the end of the U-shaped frame 324 is connected to an adjusting frame 3251 of an inverted U-shaped structure through matching bolts, and a side stop roller 325 is vertically arranged in the middle of the top surface of the adjusting frame 3251.

[0030] By adopting the above technical solution, the adjustment frame 3251 is designed as an inverted U-shaped structure and is adaptively connected to the end of the U-shaped frame 324 by bolts. This design allows the adjustment frame 3251 to be fine-tuned in the up and down position relative to the U-shaped frame 324, so that the side stop rollers 325 thereon remain relatively parallel to the side edges of the conveyor belt 12, so as to better transmit the force generated by the deflection of the conveyor belt 12.

[0031] Embodiment 3

[0032] Combination Figure 4~Figure 6 as well as Fig.11 , Fig.12 As shown, based on the above embodiment, this embodiment further provides the following contents: In this embodiment, if Figure 4 and Figure 5As shown, the pressing assembly 33 includes a support block 331 which is vertically and relatively fixed to the side of the cross support frame 11, and the top surfaces of the two support blocks 331 are respectively and vertically symmetrically connected with guide rods 332, and a rectangular plate 333 is axially slidably inserted between the two guide rods 332. A spring 2 334 is axially sleeved on the guide rod 332, and the top end of the spring 2 334 is connected to the rectangular plate 333, and the bottom end thereof is connected to the corresponding support block 331; a pressure rod 335 is inserted in the vertical gap between the two support blocks 331, and the upper part of the pressure rod 335 is detachably plugged and fixed to the middle part of the rectangular plate 333, and an arc groove 3352 is opened at the bottom end thereof, and the arc groove 3352 is located directly above the pull rope 41.

[0033] By adopting the above technical solution, the pressing assembly 33 can automatically respond to the deflection state of the conveyor belt 12 through its unique structural design; when the conveyor belt 12 deviates, the side blocking roller 325 contacts and rolls with the side edge of the conveyor belt 12, thereby pushing the Z-shaped plate 323 to elastically displace laterally, and the outer inclined surface of the Z-shaped plate 323 slides in contact with the wedge surface 3351 of the pressure rod 335. Due to the design of the shapes of the two, the pressure rod 335 is pushed downward during the movement of the Z-shaped plate 323, thereby elastically contacting the pull rope 41 vertically downward, activating the emergency stop switch 4, and realizing the immediate shutdown of the belt conveyor 1. This process does not require manual intervention, which greatly improves the response speed and safety. The rectangular plate 333 in the pressing assembly 33 is axially slidably connected through the guide support rod 332, and a second spring 334 is sleeved on the guide support rod 332 to form an elastic reset structure; when the pressing rod 335 is pushed downward by the Z-shaped plate 323, the second spring 334 is compressed to store elastic potential energy. Once the conveyor belt 12 returns to a normal state, the Z-shaped plate 323 returns to its original position, and the second spring 334 releases the elastic potential energy to push the rectangular plate 333 and the pressing rod 335 to reset, ensuring that the pressing assembly 33 can be used repeatedly and maintain its stability and reliability; The pressing component 33 not only stops the belt conveyor 1 by pressing the pull rope 41, but also drives the plug-in component 35 to start the sound and light alarm 2; when the conveyor belt 12 deviates, the sound and light alarm 2 immediately sends out an alarm signal to remind the underground workers to pay attention and take corresponding measures. This dual protection design further improves the effectiveness and reliability of the safety device.

[0034] like Figure 6 , Fig.11 and Fig.12 As shown, a shielding plate 34 is suspended directly above the pull rope 41 and is detachably and vertically connected to the corresponding side of the cross support frame 11 ; the gap at the bottom end of the pressure rod 335 passes through a through hole 341 opened on the shielding plate 34 .

[0035] By adopting the above technical solution, the shielding plate 34 is suspended above the pull rope 41 to form a protective barrier. This design effectively prevents coal dust, water droplets and other debris in the coal mine environment from directly contacting the pull rope 41, avoiding the pull rope 41 from malfunction or mis-triggering due to entanglement and contamination. At the same time, the shielding plate 34 also reduces the possibility of human error in touching the pull rope, thereby improving the stability and reliability of the safety device. A through hole 341 is provided on the shielding plate 34, which not only ensures that the pressure rod 335 can accurately touch the pull rope 41 when subjected to external force, but also limits the movement trajectory of the pressure rod 335 through the limiting effect of the through hole 341, preventing the pressure rod 335 from deflecting or shaking when touching the pull rope 41, thereby improving the accuracy and reliability of the touch and pressure.

[0036] Embodiment 4

[0037] Combination Figure 7 to Figure 12 As shown, based on the above embodiment, this embodiment further provides the following contents: In this embodiment, if Figure 7 to Figure 12 As shown, the connector assembly 35 includes a bearing seat 351 fixedly arranged vertically and relatively on the end surface of the corresponding support block 331, a rotating shaft 352 is connected between the two bearing seats 351, a gear 353 is axially fixedly connected to the middle part of the rotating shaft 352, and the gear 353 is meshed with a straight tooth pattern 3353 longitudinally arranged on the outer surface of the pressure rod 335; an extension rod 3521 is axially connected to one end of the rotating shaft 352, and a swing arm 354 is axially sleeved on the end of the extension rod 3521, and a lever 3541 is vertically connected to the free end of the swing arm 354; a dovetail groove 355 located directly below the swing arm 354 is suspended on the top surface of the shielding plate 34 along its short side direction, and the dovetail groove 355 is connected to the top surface of the shielding plate 34 along its short side direction. The movable block 357 is engaged with the inner horizontal sliding card, and the top surface of the movable block 357 is vertically connected with a stopper rod 3573 that is mutually abutted with the lever 3541. A spring 3572 is vertically connected between the inner end surface and the inner end surface of the dovetail groove 355, and a guide plug 3571 is embedded in the outer end surface; the outer end opening of the dovetail groove 355 is detachably engaged with a fixed block 358, and the inner end surface of the fixed block 358 is embedded with a pair of guide slots 3581 that can be plugged and matched with the guide plug 3571. The two guide slots 3581 are respectively connected in series with the power supply circuit placed in the sound and light alarm 2 through the wires 3561 adapted thereto, and the two wires 3561 are externally sleeved with a sheath 356; When the conveyor belt 12 is in normal operation, the guide plug 3571 is not plugged into the guide slot 3581; when the conveyor belt 12 is in deflection operation, the pressure rod 335 drives the gear 353 and the swing arm 354 to rotate synchronously during the vertical downward movement, and the lever 3541 of the swing arm 354 pushes the blocking rod 3573 of the movable block 357 to slide outward, causing the guide plug 3571 to be plugged into the guide slot 3581 to form a closed circuit and connect the sound and light alarm 2 to emit a sound and light alarm.

[0038] By adopting the above technical solution, the connector assembly 35 realizes accurate triggering of the pressure rod 335 during the vertical downward movement through the combined design of the gear 353, the swing arm 354, the movable block 357, etc.; when the conveyor belt 12 deviates, the pressure rod 335 is pushed by the Z-shaped plate 323 to move vertically downward, the gear 353 rotates accordingly, thereby driving the swing arm 354 to rotate, and the lever 3541 of the swing arm 354 accurately pushes the stopper 3573 of the movable block 357, so that the movable block 357 slides in the dovetail groove 355, and finally leads to the plugging of the guide plug 3571 and the guide slot 3581. This process is not only highly accurate, but also has a reliable connection, ensuring that the sound and light alarm 2 can be immediately started when deviation occurs; The design of the connector assembly 35 realizes the ingenious conversion between mechanical movement and electrical signal. The mechanical displacement originally caused by deviation is finally converted into the plugging action of the guide plug 3571 and the guide slot 3581 through the transmission mechanism such as the gear 353 and the swing arm 354, thereby closing the circuit and activating the sound and light alarm 2. This conversion method is simple and efficient, does not require complex electronic components or control systems, and reduces the cost of the device. The design of spring three 3572 provides a reset force for the movable block 357, so that after the deviation is corrected, the connector assembly 35 can automatically return to its initial state and be ready for the next trigger; the two wires 3561 are covered with a sheath 356 to protect the wires from damage.

[0039] like Figure 8 and Fig.10 As shown, a magnet piece 359 is embedded between the two guide slots 3581, and a magnet piece 359 is also embedded in the middle of the guide plug 3571 opposite thereto.

[0040] By adopting the above technical solution, a pair of mutually attractive magnets 359 can generate attraction between the guide plug 3571 and the guide slot 3581 when they are close to each other, thereby assisting in completing the plug-in process; preferably, the lever 3541 and the blocking rod 3573 are designed as cylindrical structures.

[0041] like Figure 7As shown, the sound and light alarm 2 is supported and connected by a suspension plate 24 vertically installed on the outer surface of the corresponding longitudinal support leg 13; the shell of the sound and light alarm 2 is a hollow cubic structure, and a light board 22 is embedded on its front side. A waterproof speaker 21 is embedded on the side, and a control button 23 is installed on one side of the light panel 22.

[0042] By adopting the above technical solution, the sound and light alarm 2 is supported and connected by the suspension plate 24 vertically installed on the outer surface of the corresponding longitudinal support leg 13, ensuring its stability and reliability in the coal mine. The shell of the sound and light alarm 2 adopts a hollow cubic structure. This design is not only convenient for the layout and installation of internal components, but also has good pressure resistance and protection, and can adapt to the complex environment of coal mines; a light board 22 is embedded on the front to display the alarm content or status indication; a waterproof speaker 21 is embedded on one side, which can emit a clear and loud voice alarm in the humid and dusty environment of coal mines; a control button 23 is installed on one side of the light board 22, which is convenient for the operator to manually control the sound and light alarm 2, and its function can be realized without complicated operating steps; Among them, the battery pack, control main board, waterproof speaker 21 and light board 22 in the shell of the sound and light alarm 2 form a series power supply circuit, and the two guide slots 3581 are connected in series with this power supply circuit through wires 3561 respectively. The guide plug 3571 is plugged into the two guide slots 3581 to form a closed circuit and connect the sound and light alarm 2 to emit a sound and light alarm.

[0043] The working principle and use process of the present invention: When the present invention is in use, in a coal mine, when the belt conveyor 1 operates normally, the conveyor belt 12 keeps running smoothly, and the side blocking roller 325 does not contact the side edge of the conveyor belt 12; at this time, the emergency stop switch 4 and the sound and light alarm 2 are both in an unactivated state.

[0044] When the conveyor belt 12 deflects, the side stop roller 325 rolls with the side edge of the conveyor belt 12, driving the Z-shaped plate 323 to elastically displace laterally along the T-shaped frame 321 on the mounting plate 31. This displacement causes the outer inclined surface of the Z-shaped plate 323 to slide displacedly with the wedge surface 3351 of the pressure rod 335. As the Z-shaped plate 323 moves, the pressure rod 335 is pushed by the wedge surface 3351, overcomes the elastic force of the second spring 334 and moves vertically downward, and the arc groove 3352 at the bottom of the pressure rod 335 contacts and presses the pull rope 41, thereby activating the emergency stop switch 4 and shutting down the belt conveyor 1 to prevent the accident from expanding; At the same time, the downward movement of the pressure rod 335 also drives the operation of the plug assembly 35. The straight tooth pattern 3353 on the pressure rod 335 meshes with the gear 353, so that the gear 353 and the rotating shaft 352 rotate, thereby driving the swing arm 354 and the lever 3541 to rotate. The lever 3541 pushes the stopper 3573 of the movable block 357 to slide outward, stretching the spring 3572, so that the guide plug 3571 is plugged into the guide slot 3581 in the fixed block 358. The connection between the guide plug 3571 and the guide slot 3581 forms a closed circuit, which is connected in series with the power supply circuit in the sound and light alarm 2 through the wire 3561, thereby turning on the sound and light alarm 2, causing it to emit a sound and light alarm to remind the operator to pay attention to abnormal conditions.

[0045] In addition, the sliding assembly 326 and the elastic assembly 327 on the mounting plate 31 jointly ensure the smooth lateral displacement of the push-block assembly 32 when the conveyor belt 12 deflects, and the elastic force of the spring 1 3273 enables the push-block assembly 32 to be reset after the conveyor belt 12 returns to normal.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground belt conveyor safety device based on a mining intrinsically safe sound and light alarm, comprising a belt conveyor (1) composed of a transverse support frame (11), longitudinal support legs (13) and a conveyor belt (12), wherein pull rope (41) type emergency stop switches (4) are symmetrically arranged on the outer side surfaces of the transverse support frame (11) at one end of the belt conveyor (1), and a reset button (42) is arranged on the emergency stop switch (4), characterized in that: Sound and light alarms (2) are symmetrically suspended below the pull ropes (41) of the two emergency stop switches (4); a deflection mechanism (3) is arranged directly below the upper belt surface of the conveyor belt (12); The deflection mechanism (3) comprises a mounting plate (31) horizontally mounted on the top surfaces of two transverse support frames (11), and the ends of the mounting plate (31) are symmetrically provided with push-blocking assemblies (32), and the push-blocking assemblies (32) comprise a Z-shaped plate (323) for elastically displacing laterally as the conveyor belt (12) deflects, and a side stop roller (323) is longitudinally mounted on the inner inclined portion of the Z-shaped plate (323) for rolling contact with the side edge of the conveyor belt (12) after deflection. 5), a pressing assembly (33) is arranged opposite to the outer inclined surface of the Z-shaped plate (323), the pressing assembly (33) comprises a pressing rod (335) for elastically pressing the pull rope (41) vertically downward, a wedge-shaped surface (3351) is arranged at the top of the pressing rod (335) for slidingly contacting the outer inclined surface of the Z-shaped plate (323), and a plug-in assembly (35) for controlling the opening and closing of the sound and light alarm (2) is arranged opposite to the outer facade of the pressing rod (335); The conveyor belt (12) is divided into a normal operating state and a deflected operating state. When in the normal operating state, the side stop roller (325) does not roll in contact with the side edge of the conveyor belt (12), and the emergency stop switch (4) and the sound and light alarm (2) are not activated; when in the deflected operating state, the side stop roller (325) rolls in contact with the side edge of the conveyor belt (12), and drives the Z-shaped plate (323) to elastically displace laterally, and the outer inclined surface of the Z-shaped plate (323) and the wedge surface (3351) of the pressure rod (335) slide in an offset manner, causing the pressure rod (335) to elastically contact the pull rope (41) vertically downward to activate the emergency stop switch (4) and close the belt conveyor (1), and the pressure rod (335) synchronously drives the connector assembly (35) to activate the sound and light alarm (2).

2. The underground belt conveyor safety device based on the mine intrinsically safe sound and light alarm according to claim 1 is characterized in that: The push-blocking assembly (32) comprises a T-shaped frame (321) elastically slidably connected to the top surface of the mounting plate (31) in a transverse direction, a vertical support rod (322) of a Z-shaped structure is suspended in the middle of the top surface of the T-shaped frame (321), the top end of the vertical support rod (322) is vertically fixed to the inner end of the waist of the Z-shaped plate (323), a U-shaped frame (324) is installed in an inclined portion of the Z-shaped plate (323) in an inclined manner downward, and side stop rollers (325) are symmetrically arranged at the ends of the U-shaped frame (324) in a longitudinal direction.

3. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 1 is characterized in that: The pressing assembly (33) comprises a support block (331) vertically and relatively fixedly connected to the side of the cross support frame (11), the top surfaces of the two support blocks (331) are respectively and vertically symmetrically connected with guide rods (332), a rectangular plate (333) is axially slidably inserted between the two guide rods (332), a spring 2 (334) is axially sleeved on the guide rod (332), the top end of the spring 2 (334) is connected to the rectangular plate (333), and the bottom end is connected to the corresponding support block (331); a pressure rod (335) is inserted in the vertical gap between the two support blocks (331), the upper part of the pressure rod (335) is detachably plugged and fixed to the middle part of the rectangular plate (333), and the bottom end is provided with an arc groove (3352), and the arc groove (3352) is located directly above the pull rope (41).

4. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 3 is characterized in that: A shielding plate (34) is suspended directly above the pull rope (41) and is detachably connected to the side of the corresponding cross support frame (11); the gap at the bottom end of the pressure rod (335) passes through a through hole (341) provided on the shielding plate (34).

5. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 4 is characterized in that: The connector assembly (35) comprises a bearing seat (351) fixedly arranged vertically on the end surface of the corresponding support block (331); a rotating shaft (352) is connected between the two bearing seats (351) for transmission; a gear (353) is fixedly connected axially in the middle of the rotating shaft (352); the gear (353) is meshed with a straight tooth pattern (3353) longitudinally arranged on the outer surface of the pressure rod (335); an extension rod (3521) is axially connected to one end of the rotating shaft (352); a swing arm (354) is axially sleeved on the end of the extension rod (3521); a lever (3541) is vertically connected to the free end of the swing arm (354); a dovetail groove (355) located directly below the swing arm (354) is suspended on the top surface of the shielding plate (34) along its short side direction; the dovetail groove (355) is connected to the top surface of the shielding plate (34) along its short side direction. ) is engaged with a movable block (357) in a transversely sliding manner, the top surface of the movable block (357) is vertically connected with a stopper rod (3573) that is mutually abutted with the shifting rod (3541), the inner end surface of the movable block (357) is vertically connected with a spring three (3572) between the inner end surface and the inner end surface of the dovetail groove (355), and the outer end surface of the movable block (357) is embedded with a guide plug (3571); the outer end opening of the dovetail groove (355) is detachably engaged with a fixed block (358), the inner end surface of the fixed block (358) is embedded with a pair of guide slots (3581) that can be plugged with the guide plug (3571), the two guide slots (3581) are respectively connected in series with the power supply circuit placed in the sound and light alarm (2) through corresponding wires (3561), and the two wires (3561) are externally sleeved with a sheath (356); When the conveyor belt (12) is in a normal operating state, the guide plug (3571) is not plugged into the guide slot (3581); when the conveyor belt (12) is in a deflection operating state, the pressure rod (335) drives the gear (353) and the swing arm (354) to rotate synchronously during the vertical downward movement, and the lever (3541) of the swing arm (354) pushes the blocking rod (3573) of the movable block (357) to slide outward, causing the guide plug (3571) to be plugged into the guide slot (3581), so as to form a closed circuit and connect the sound and light alarm (2) to emit a sound and light alarm.

6. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 5 is characterized in that: A magnet sheet (359) is embedded between the two guide slots (3581), and a magnet sheet (359) is also embedded in the middle of the guide plug (3571) opposite thereto.

7. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 2 is characterized in that: A blocking block (311) is vertically fixedly connected to the middle of the top surface of the mounting plate (31) along its short side direction, and sliding components (326) are symmetrically arranged on both sides of the blocking block (311); the sliding components (326) include T-shaped slide rails (3261) horizontally arranged along the long axis of the top surface of the mounting plate (31), and a slider (3262) is connected to the slide rail (3261) in a transverse sliding manner. A T-shaped frame (321) is arranged between the top surfaces of the two sliders (3262), and the vertical portion of the T-shaped frame (321) is connected to an elastic component (327) transversely arranged on the outer side of the top surface of the mounting plate (31).

8. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 7 is characterized in that: The elastic component (327) comprises a limit block (3271) vertically fixed to the end of the top surface of the mounting plate (31); a guide rod (3272) is vertically connected to the middle of the inner vertical surface of the limit block (3271); the inner end gap of the guide rod (3272) passes through the vertical portion of the T-shaped frame (321); a spring 1 (3273) is axially sleeved on the guide rod (3272); the outer end of the spring 1 (3273) is connected to the limit block (3271), and the inner end of the spring 1 (3273) is connected to the vertical portion of the T-shaped frame (321).

9. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to claim 2 is characterized in that: The end of the U-shaped frame (324) is connected to an adjusting frame (3251) with an inverted U-shaped structure via bolts adapted thereto, and a side stop roller (325) is vertically arranged in the middle of the top surface of the adjusting frame (3251).

10. The underground belt conveyor safety device based on the mining intrinsically safe sound and light alarm according to any one of claims 1 to 9, characterized in that: The sound and light alarm (2) is supported and connected by a suspension plate (24) vertically installed on the outer facade of the corresponding longitudinal support leg (13); the outer shell of the sound and light alarm (2) is a hollow cubic structure, a light board (22) is embedded in the front, a waterproof speaker (21) is embedded in one side, and a control button (23) is installed on one side of the light board (22).

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