Mine-used intrinsic safety type camera with protection function

Abstract

The application provides a mine-used intrinsic safety type camera with a protection function, and belongs to the technical field of camera position control. The camera comprises a protection unit, a displacement unit and a distribution unit. The protection unit comprises a base, a sliding seat slidingly arranged on the base and a protection cover fixedly connected to the sliding seat. The base is provided with a driving cavity. The protection cover comprises an outer support cover, an inner support cover and an isolation cover which are sequentially sleeved from outside to inside. The inner support cover and the isolation cover form a deformation cavity. The displacement unit is arranged in the driving cavity. The displacement unit comprises a balance rod, a sliding block slidingly arranged on the balance rod and a lifting assembly arranged at two ends of the balance rod. The sliding block moves along the length direction of the balance rod. The sliding block is connected to the sliding seat. The lifting assembly comprises a base provided with a jacking cavity and a lifting rod arranged in the jacking cavity. The lifting rod is slidingly connected to the base. The distribution unit is connected to the jacking cavity and the deformation cavity, and is used for distributing fluid into the two jacking cavities and resetting the fluid. The application reduces the possibility of damage of the camera.

Description

Technical Field

[0001] The invention belongs to the technical field of camera position control, and in particular relates to a mining intrinsically safe camera with a protection function. Background Art

[0002] In the coal mine safety production system, the coal mining face (mining face) is one of the most core, dynamic, and high-risk areas. For real-time monitoring, intrinsically safe mining cameras are deployed in this area. However, the mining face is an area where ground stress is released violently. Under the influence of coal cutting by shearers, hydraulic support frame movement, and cyclical pressure, the roof rock layer and coal wall are prone to localized fracture and separation, resulting in the sudden fall or scattering of rocks of various sizes.

[0003] In order to avoid the risk of the camera being damaged by rocks, the camera will be equipped with a mobile structure, and a protective cover is usually set around the camera. When the risk of being damaged is detected, the control system sends a start signal to the electronic control component, so that the electronic control component drives the mobile structure and then drives the camera to move away from the falling rock area.

[0004] It can be seen from this that the electronic control component will only start after receiving the start signal, and it takes time to detect the risk of being hit, send the start signal, receive the start signal and start moving. This will cause the electronic control component to drive the camera to leave the rockfall area, which will be delayed until the time when the force on the protective cover reaches the preset value. That is, the camera may be damaged before it moves in time, increasing the possibility of damage to the camera. Summary of the Invention

[0005] An embodiment of the present invention provides a mining intrinsically safe camera with a protective function, which aims to solve the technical problem that the electronic control component drives the camera to leave the rockfall area, which is delayed until the time point when the force on the protective cover reaches a preset value, resulting in a high possibility of damage to the camera.

[0006] To achieve the above object, the technical solution adopted by the present invention is to provide a mining intrinsically safe camera with a protective function, which is suitable for use as a camera, comprising:

[0007] The protective unit includes a base, a slide slidably mounted on the base, and a protective cover fixed to the slide, wherein the base is provided with a driving cavity communicating with the outside, the slide moves along a first direction, the protective cover includes an outer support cover, an inner support cover, and an isolation cover sequentially sleeved from the outside to the inside, the inner support cover and the isolation cover enclosing a deformation cavity, and the isolation cover is used to install the camera;

[0008] a shifting unit arranged in the driving cavity, the shifting unit comprising a balance bar, a sliding block slidingly arranged on the balance bar, and a lifting assembly arranged at both ends of the balance bar along the first direction, the sliding block moving along the length direction of the balance bar, the sliding block being connected with the sliding seat, the lifting assembly comprising a base having a jacking cavity and a lifting bar arranged in the jacking cavity, the lifting bar being slidingly connected with the base, the moving direction of the lifting bar being perpendicular to the first direction; and

[0009] a distribution unit in communication with the jacking cavities and the deformation cavity, for distributing fluid into the two jacking cavities and resetting the fluid.

[0010] In a possible implementation, the distribution unit comprises:

[0011] a transfer box arranged in the driving cavity and fixedly connected with the base;

[0012] an overflow pipe in communication with the transfer box and the deformation cavity;

[0013] a perfusion mechanism comprising a first perfusion pipe in communication with the transfer box and one of the jacking cavities, a second perfusion pipe in communication with the transfer box and the other jacking cavity, and a first control structure for controlling the opening and closing of the first perfusion pipe and the second perfusion pipe; and

[0014] a backflow mechanism comprising a first backflow pipe in communication with the transfer box and one of the jacking cavities, a second backflow pipe in communication with the transfer box and the other jacking cavity, and a second control structure for controlling the opening and closing of the first backflow pipe and the second backflow pipe.

[0015] In a possible implementation, the sliding block is fixedly connected with a synchronization bar;

[0016] The distribution unit further comprises a determination mechanism, the determination mechanism comprising:

[0017] a transmission bar connected with the sliding seat, the transmission bar being provided with an avoiding slot for the movement of the synchronization bar, the extending direction of the avoiding slot being perpendicular to the first direction;

[0018] two limiting blocks arranged at both sides of the driving cavity along the first direction, the limiting blocks having a first working state of abutting against the transmission bar and a second working state of being separated from the transmission bar; and

[0019] two limiting structures corresponding to the limiting blocks one by one;

[0020] When the force borne by the protective cover is less than a preset value, the limiting assembly causes the limiting block to be in the first working state; when the force borne by the protective cover reaches the preset value, the limiting assembly causes the limiting block to be in the second working state.

[0021] In a possible implementation, the distribution unit further comprises two partitions oppositely arranged in the transfer box, the two partitions separating the transfer box into a second region, a first region and a third region arranged in sequence along a second direction, the partitions being slidingly connected to the transfer box along the second direction, the overflow pipe being in communication with the first region, the first infusion pipe and the second infusion pipe both being in communication with the first region, an inner diameter of the overflow pipe being greater than inner diameters of the first infusion pipe and the second infusion pipe, the first return pipe and the second return pipe both being in communication with the first region;

[0022] The limiting structure comprises:

[0023] A limiting seat having a pressing cavity, the limiting seat being fixedly connected to the base;

[0024] A limiting rod arranged in the pressing cavity, the limiting rod being slidingly connected to the limiting seat, a moving direction of the limiting rod being perpendicular to the first direction, the limiting rod being further fixedly connected to the limiting block;

[0025] A deformation member fixedly connected between the limiting rod and the limiting seat, the deformation member having a pre-tightening force causing the limiting rod to move away from the limiting seat; and

[0026] A shunt assembly comprising a first shunt pipe in communication with one of the pressing cavities and the second region, and a second shunt pipe in communication with the other pressing cavity and the third region.

[0027] In a possible implementation, the first control structure comprises:

[0028] Two first valves respectively arranged in the first infusion pipe and the second infusion pipe;

[0029] Two linkage rods one-to-one fixedly connected to rotating wheels of the first valves, the linkage rods being coaxial with the rotating wheels, the linkage rods being further rotationally connected to the base, rotating shafts of the linkage rods being perpendicular to the first direction; and

[0030] A transmission assembly arranged between the sliding seat and the linkage rods, the transmission assembly being configured to cause the sliding seat to drive the linkage rods to rotate.

[0031] In a possible implementation, the transmission rod is fixedly connected to the sliding seat;

[0032] The transmission assembly comprises:

[0033] A first magnetic wheel is rotatably connected to the outer periphery of the transmission rod, and the rotation axis of the first magnetic wheel is parallel to the rotation axis of the linkage rod;

[0034] A transmission gear is fixedly connected to the outer periphery of the first magnetic wheel;

[0035] A transmission rack extends in the first direction and is adapted to mesh with the transmission gear, and the transmission rack is also fixedly connected to the base;

[0036] A second magnetic wheel is fixedly connected to the outer periphery of the linkage rod; and

[0037] A transition magnetic wheel is arranged between the first magnetic wheel and the second magnetic wheel, and the transition magnetic wheel is rotatably connected to the base, and the rotation axis of the transition magnetic wheel is perpendicular to the rotation axis of the linkage rod.

[0038] In a possible implementation, the second control structure comprises:

[0039] Two second valves are arranged in the first return pipe and the second return pipe respectively, and each of the second valves comprises a valve core and a valve body;

[0040] Two drive seats are fixedly connected to the valve body one by one, and a control cavity is formed in each of the drive seats, one end of the valve core extends into the control cavity, the valve core is in sliding connection with the drive seat, and the valve core moves towards or away from the valve body; and

[0041] An identification assembly injects fluid into one of the control cavities according to the position of the sliding seat.

[0042] In a possible implementation, the identification assembly comprises:

[0043] Two storage tanks are arranged on both sides of the drive cavity along the first direction respectively, and the storage tanks are fixedly connected to the base;

[0044] Two pistons are in one-to-one correspondence with the storage tanks, one end of each of the pistons extends into the storage tank, the other end of each of the pistons has a force receiving surface, each of the pistons is in sliding connection with the storage tank, and each of the pistons moves along the central axis of the storage tank; and

[0045] Two communication pipes are arranged between the control cavities and the storage tanks arranged on both sides of the drive cavity along the first direction.

[0046] In a possible implementation, the displacement unit further comprises a plurality of trigger columns slidably arranged in the inner support cover, the trigger columns abut against the inner wall of the outer support cover, and the trigger columns move along the radial direction of the inner support cover.

[0047] In a possible implementation, the base is fixedly connected with the pedestal, one end of the lifting rod away from the base is hingedly connected with a compensation block, the hinged shaft of the lifting rod and the compensation block is perpendicular to the moving direction of the lifting rod, the compensation block is slidingly connected with the balance rod, and the compensation block moves along the length direction of the balance rod.

[0048] Compared with the prior art, the mine intrinsic safety type camera with the protection function ingeniously converts impact force into driving displacement source power, collects pressure changes in the deformation cavity in the protective cover, and adjusts and controls the distribution of fluid in the two lifting assembly jacking cavities by using the distribution unit, so that the displacement unit drives the entire protective cover and the internal camera to move smoothly along the first direction. At the same time, the protective cover adopts a three-layer sleeve structure of an outer support cover, an inner support cover and an isolation cover, which not only provides a solid physical barrier for the camera, but also the deformation cavity is the key pressure source and buffer cavity of the entire force-displacement conversion system, which can effectively absorb and transmit energy when impact is borne, thereby protecting the camera body and providing reliable power for displacement. The present application completely drives the entire process by physical structure and fluid pressure from impact occurrence, pressure transmission, fluid distribution, lifting rod action, balance rod tilting, sliding block sliding to final camera translation avoidance. The entire process does not need to wait for external electrical signal triggering, completely eliminates the avoidance delay risk caused by the dependence on electrical signal transmission, solves the fatal defect that the electrical control system cannot timely protect the camera due to signal interference or transmission lag, and greatly improves the survival rate of the camera in dynamic high-risk environment. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 FIG. 1 is a structural schematic diagram of a mine intrinsic safety type camera with a protection function according to an embodiment of the present application;

[0050] Figure 2 FIG. 5 is a sectional view of the embodiment of the present application to embody the structure in the driving cavity;

[0051] Figure 3 FIG. 8 is a partial sectional view of the protective cover in the embodiment of the present application;

[0052] Figure 4 FIG. 11 is a structural schematic diagram of the displacement unit and the distribution unit in the embodiment of the present application;

[0053] Figure 5 FIG. 14 is a partial sectional view of the embodiment of the present application to embody the position of the jacking cavity;

[0054] Figure 6 FIG. 17 is a sectional view of the embodiment of the present application to embody the identification assembly;

[0055] Figure 7 FIG. 20 is a partial sectional view of the embodiment of the present application to embody the distribution in the transfer box;

[0056] Figure 8 Figure 3 is a partial cross-sectional view showing the first valve closing mode and the position of the pressing cavity according to an embodiment of the present application;

[0057] Figure 9 Figure 4 is a partial cross-sectional view showing the position of the control cavity according to an embodiment of the present application.

[0058] Legend of reference signs:

[0059] 10, protection unit; 101, base; 1011, driving cavity; 102, sliding base; 103, protection cover; 1031, outer support cover; 1032, inner support cover; 1033, isolation cover; 1034, deformation cavity; 1035, visual window; 104, concertina cover;

[0060] 20, displacement unit; 201, balance bar; 202, sliding block; 2021, synchronization bar; 203, base; 2031, jacking cavity; 204, lifting bar; 2041, compensation block; 205, first elastic member; 206, trigger column;

[0061] 30, distribution unit; 301, transfer box; 302, overflow pipe; 303, first perfusion pipe; 304, second perfusion pipe; 305, first backflow pipe; 306, second backflow pipe; 307, transmission bar; 3071, avoidance groove; 308, limiting block; 3081, inclined surface; 3082, straight surface; 309, partition; 310, second area; 311, first area; 312, third area; 313, limiting seat; 3131, pressing cavity; 314, limiting bar; 315, deformation member; 316, first shunt pipe; 317, second shunt pipe; 318, first valve; 319, linkage bar; 320, first magnetic wheel; 321, transmission gear; 322, transmission rack; 323, second magnetic wheel; 324, transition magnetic wheel; 325, second valve; 3251, valve body; 3252, valve core; 326, driving seat; 3261, control cavity; 327, storage tank; 328, piston; 329, communication pipe; 330, second elastic member;

[0062] 40, camera. DETAILED DESCRIPTION

[0063] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0064] Please refer to Figures 1 to 9The application discloses a mine intrinsic safety type camera with a protection function. The mine intrinsic safety type camera with the protection function is suitable for a camera 40 and comprises a protection unit 10, a displacement unit 20 and a distribution unit 30. The protection unit 10 comprises a base 101, a sliding base 102 slidingly arranged on the base 101 and a protection cover 103 fixedly connected to the sliding base 102. The base 101 is provided with a driving cavity 1011 in communication with the outside. The sliding base 102 moves along a first direction. The protection cover 103 comprises an outer support cover 1031, an inner support cover 1032 and an isolation cover 1033 which are sequentially arranged from outside to inside. The inner support cover 1032 and the isolation cover 1033 enclose a deformation cavity 1034. The isolation cover 1033 is used for mounting the camera 40. The displacement unit 20 is arranged in the driving cavity 1011. The displacement unit 20 comprises a balance rod 201, a sliding block 202 slidingly arranged on the balance rod 201 and a lifting assembly arranged at two ends of the balance rod 201 along the first direction. The sliding block 202 moves along the length direction of the balance rod 201. The sliding block 202 is connected to the sliding base 102. The lifting assembly comprises a base 203 provided with a jacking cavity 2031 and a lifting rod 204 arranged in the jacking cavity 2031. The lifting rod 204 is slidingly connected to the base 203. The moving direction of the lifting rod 204 is perpendicular to the first direction. The distribution unit 30 is in communication with the jacking cavity 2031 and the deformation cavity 1034 and is used for distributing fluid into the two jacking cavities 2031 and resetting the fluid.

[0065] The protection cover 103 is provided with a ring-shaped visual window 1035. The camera 40 performs work through the visual window 1035. The camera 40 can autonomously adjust a camera direction to meet work requirements. The protection unit 10 further comprises an organ case 104 arranged at an opening of the driving cavity 1011 in communication with the outside, so that dust in a mine is prevented from entering the driving cavity 1011.

[0066] Optionally, referring to Figure 5 The lifting assembly further comprises a first elastic member 205 arranged between the lifting rod 204 and the base 203. The first elastic member 205 can be a spring or a spring rod. The first elastic member 205 has a pre-tightening force for moving the lifting rod 204 away from the balance rod 201.

[0067] Optionally, the lifting rod 204 is reset by transferring fluid pressure.

[0068] It should be noted that the fluid can be a liquid, such as water or hydraulic oil.

[0069] The mine intrinsic safety type camera provided by the embodiment has a protection function. When the outer support cover 1031 is hit by falling rocks, the impact force is transmitted to the inner support cover 1032 through the outer support cover 1031, so that the deformation cavity 1034 is extruded to cause the internal fluid pressure to instantaneously increase. The distribution unit 30 monitors and connects the deformation cavity 1034 and the jacking cavities 2031 of the two lifting assemblies in the displacement unit 20 in real time. The fluid with increased pressure is distributed to one of the jacking cavities 2031 through the distribution unit 30 as needed. The injected fluid pushes the lifting rods 204 to move out in the jacking cavities 2031 along a direction perpendicular to the first direction. Since the two lifting rods 204 are respectively located at two ends of the balance bar 201, the lifting of a single lifting rod 204 causes the balance bar 201 to tilt. The sliding block 202 is slidably arranged on the balance bar 201. When the balance bar 201 tilts, the sliding block 202 slides on the balance bar 201 along the length direction of the balance bar 201. The movement of the sliding block 202 directly drives the sliding seat 102 to move along the first direction. The movement of the sliding seat 102 finally drives the entire protective cover 103 and the camera 40 installed inside the isolation cover 1033 to synchronously translate together, so that the camera 40 quickly deviates from the original position to reach a safe area. The distribution unit 30 is also responsible for guiding the fluid in the jacking cavities 2031 back to the deformation cavity 1034 or a specified position after the impact, so as to reset the lifting rods 204, restore the balance bar 201 to be horizontal, and return the sliding block 202 and the sliding seat 102 to the original positions. The entire system is ready for the next possible impact.

[0070] Compared with the prior art, the impact force is ingeniously converted into a driving displacement source. The pressure change is collected through the deformation cavity 1034 in the protective cover 103, and the distribution unit 30 is used to regulate and control the distribution of the fluid in the jacking cavities 2031 of the two lifting assemblies, so as to drive the displacement unit 20 to smoothly move the entire protective cover 103 and the camera 40 inside along the first direction. At the same time, the protective cover 103 adopts a three-layer sleeve structure of the outer support cover 1031, the inner support cover 1032 and the isolation cover 1033. The three-layer sleeve structure not only provides a solid physical barrier for the camera 40, but also provides a reliable power source for the displacement. The deformation cavity 1034 is a key pressure source and a buffer cavity of the entire force-displacement conversion system, which can effectively absorb and transmit energy when an impact is borne, thereby protecting the camera 40 and providing reliable power for displacement. The present application is driven by physical structure and fluid pressure from impact occurrence, pressure transmission, fluid distribution, lifting rod 204 action, balance bar 201 tilting, sliding block 202 sliding to the final translation of the camera 40. The entire process does not need to wait for an external electrical signal to trigger, completely eliminates the risk of delay caused by the dependence on electrical signal transmission, solves the fatal defect that the camera 40 cannot be timely protected due to signal interference or transmission lag of the electrical control system, and greatly improves the survival rate of the camera 40 in a dynamic high-risk environment.

[0071] In some embodiments, referring to Figures 2 to 4The distribution unit 30 comprises a transfer box 301, an overflow pipe 302, a filling mechanism, and a backfilling mechanism. The transfer box 301 is arranged in the driving cavity 1011 and fixed to the base 101. The overflow pipe 302 is communicated with the transfer box 301 and the deformation cavity 1034. The filling mechanism comprises a first filling pipe 303 communicated with the transfer box 301 and one of the jacking cavities 2031, a second filling pipe 304 communicated with the transfer box 301 and the other jacking cavity 2031, and a first control structure for controlling the opening and closing of the first filling pipe 303 and the second filling pipe 304. The backfilling mechanism comprises a first backfilling pipe 305 communicated with the transfer box 301 and one of the jacking cavities 2031, a second backfilling pipe 306 communicated with the transfer box 301 and the other jacking cavity 2031, and a second control structure for controlling the opening and closing of the first backfilling pipe 305 and the second backfilling pipe 306. The first backfilling pipe 305 and the second backfilling pipe 306 are each provided with a one-way valve, which enables the liquid to flow back from the jacking cavity 2031 to the transfer box 301.

[0072] When the rock impact protection cover 103 causes the fluid pressure in the deformation cavity 1034 to rise, the high-pressure fluid first flows into the transfer box 301 at high speed through the overflow pipe 302. The fluid in the transfer box 301 is then distributed in a targeted manner by the first control structure. After the fluid is injected into the target jacking cavity 2031, the target lifting rod 204 is pushed out, forcing the balance bar 201 to tilt. After the camera 40 moves to the target position, the second control structure causes the fluid flow in the target jacking cavity 2031 to flow to the transfer box 301. The lifting rod 204 is retracted into the base 203, and the balance bar 201 returns to the horizontal position.

[0073] The transfer box 301 continuously acts as a transfer hub in this cycle. The avoidance action of the camera 40 is achieved by pure mechanical pressure distribution, ensuring the reliability of the device.

[0074] In some embodiments, referring to Figure 4 , Figure 6 and Figure 8 , the sliding block 202 is fixed with a synchronization rod 2021. The distribution unit 30 further comprises a determination mechanism, which comprises a transmission rod 307, two limiting blocks 308, and two limiting structures. The transmission rod 307 is connected to the sliding base 102. The transmission rod 307 is provided with an avoidance groove 3071 for the movement of the synchronization rod 2021. The extension direction of the avoidance groove 3071 is perpendicular to the first direction. The two limiting blocks 308 are arranged on both sides of the driving cavity 1011 along the first direction. The limiting block 308 has a first working state of abutting against the transmission rod 307 and a second working state of being separated from the transmission rod 307. The two limiting structures correspond to the limiting blocks 308 one by one.

[0075] When the force borne by the protective cover 103 is less than the preset value, the limiting assembly causes the limiting block 308 to be in the first working state; when the force borne by the protective cover 103 reaches the preset value, the limiting assembly causes the limiting block 308 to be in the second working state.

[0076] When the rockfall hits the protective cover 103, if the impact force is lower than the preset value, the limiting block 308 remains in the first working state under the constraint of the limiting structure, at this time, the displacement of the transmission rod 307 is mechanically locked, the sliding seat 102 cannot move in the first direction, the protective cover 103 only absorbs energy through its own deformation, and the camera 40 remains in place; once the impact force reaches the preset threshold, the limiting block 308 switches to the second working state, the transmission rod 307 is instantaneously released from mechanical locking, and the sliding seat 102 immediately moves in the first direction under the drive of the displacement unit 20, and the synchronous rod 2021 drives the protective cover 103 and the camera 40 to synchronously translate to avoid the rockfall area.

[0077] By setting the limiting structure, the protective cover 103 does not trigger system response when bearing low-intensity impact, effectively preventing misoperation; when the impact force reaches the preset threshold, the limiting block 308 instantaneously releases the transmission rod 307 under the action of pure mechanics, so that the sliding seat 102 is immediately unlocked.

[0078] After the balance rod 201 tilts, the height of the sliding block 202 changes constantly during movement, and the avoidance groove 3071 is provided to make the movement of the sliding block 202 unrestricted.

[0079] In some embodiments, referring to Figure 7 and Figure 8 The distribution unit 30 further includes two partitions 309 oppositely arranged in the transfer box 301, the two partitions 309 divide the transfer box 301 into a second region 310, a first region 311 and a third region 312 arranged in sequence in the second direction, the partitions 309 are slidingly connected with the transfer box 301 in the second direction, the overflow pipe 302 and the first region 311 are in communication, the first pouring pipe 303 and the second pouring pipe 304 are both in communication with the first region 311, the inner diameter of the overflow pipe 302 is greater than the inner diameters of the first pouring pipe 303 and the second pouring pipe 304, the first backflow pipe 305 is in communication with the second region 310, and the second backflow pipe 306 is in communication with the third region 312.

[0080] The limiting structure comprises a limiting seat 313, a limiting rod 314, a deformation piece 315, and a flow distribution assembly; the limiting seat 313 is provided with a pressing cavity 3131, and the limiting seat 313 is fixedly connected to the base 101; the limiting rod 314 is arranged in the pressing cavity 3131, and the limiting rod 314 is slidably connected to the limiting seat 313; the moving direction of the limiting rod 314 is perpendicular to the first direction; the limiting rod 314 is further fixedly connected to the limiting block 308; the deformation piece 315 is fixedly connected between the limiting rod 314 and the limiting seat 313; the deformation piece 315 has a pre-tightening force for moving the limiting rod 314 away from the limiting seat 313; and the deformation piece 315 can be a spring or a spring rod; the flow distribution assembly comprises a first flow distribution pipe 316 connected to one of the pressing cavities 3131 and the second area 310, and a second flow distribution pipe 317 connected to the other pressing cavity 3131 and the third area 312.

[0081] The limiting block 308 has an inclined surface 3081 and a straight surface 3082; the straight surface 3082 is used for limiting the position of the limiting rod 314; and the inclined surface 3081 allows the limiting rod 314 to pass through the limiting block 308.

[0082] It should be noted that the second direction can coincide with the first direction, or the second direction can have an included angle with the first direction.

[0083] When the protective cover 103 is impacted by an impact force, the pressurized fluid in the deformation cavity 1034 flows into the first area 311 through the overflow pipe 302. If the impact force borne by the protective cover 103 is less than a preset value, the total amount of fluid flowing into the first area 311 is relatively small at this time, and the fluid cannot completely overcome the elastic force of the deformation piece 315 to make the limiting block 308 separate from the transmission rod 307, so that the limiting block 308 still remains in abutment with the transmission rod 307; if the impact force borne by the protective cover 103 is greater than or equal to the preset value, the total amount of fluid flowing into the first area 311 is relatively large at this time, and the fluid flowing into the pressing cavity 3131 completely overcomes the elastic force of the deformation piece 315, so that the limiting rod 314 drives the limiting block 308 to completely separate from the transmission rod 307.

[0084] In some embodiments, referring to Figure 6 and Figure 8 , the first control structure comprises two first valves 318, two linkage rods 319, and a transmission assembly; the two first valves 318 are respectively arranged in the first infusion pipe 303 and the second infusion pipe 304; the two linkage rods 319 are respectively fixedly connected to the rotating wheels of the first valves 318; the linkage rods 319 are coaxial with the rotating wheels; the linkage rods 319 are further rotatably connected to the base 101; and the rotating shafts of the linkage rods 319 are perpendicular to the first direction; the transmission assembly is arranged between the sliding seat 102 and the linkage rods 319, and is used for driving the sliding seat 102 to rotate the linkage rods 319.

[0085] Specifically, the transmission rod 307 is fixedly connected with the sliding seat 102; the transmission assembly comprises a first magnetic wheel 320, a transmission gear 321, a transmission rack 322, a second magnetic wheel 323 and a transition magnetic wheel 324; the first magnetic wheel 320 is rotationally connected to the outer periphery of the transmission rod 307, and the rotation axis of the first magnetic wheel 320 is parallel to the rotation axis of the linkage rod 319; the transmission gear 321 is fixedly connected to the outer side of the first magnetic wheel 320; the transmission rack 322 extends in the first direction and is adapted to be engaged with the transmission gear 321, and the transmission rack 322 is also fixedly connected with the base 101; the second magnetic wheel 323 is fixedly connected to the outer periphery of the linkage rod 319; the transition magnetic wheel 324 is arranged between the first magnetic wheel 320 and the second magnetic wheel 323, and the transition magnetic wheel 324 is rotationally connected with the base 101, and the rotation axis of the transition magnetic wheel 324 is perpendicular to the rotation axis of the linkage rod 319.

[0086] When the sliding seat 102 moves in the first direction, the sliding seat 102 synchronously drives the transmission rod 307 to move, and the transmission rod 307 moves to make the transmission gear 321 roll along the transmission rack 322 in engagement, so that the transmission gear 321 rotates, the transmission gear 321 drives the first magnetic wheel 320 to rotate, the first magnetic wheel 320 drives the second magnetic wheel 323 to rotate through the transition magnetic wheel 324, so that the second magnetic wheel 323 drives the linkage rod 319 to rotate, the linkage rod 319 drives the rotating wheel of the first valve 318 to rotate, so as to close the first valve 318, thereby making the fluid filled into the lower pressing cavity 3131 remain, and further making the balance rod 201 keep in the inclined state.

[0087] In some embodiments, referring to Figure 6 and Figure 9 , the second control structure comprises two second valves 325, two drive seats 326 and an identification assembly; the two second valves 325 are arranged in the first backfill pipe 305 and the second backfill pipe 306 respectively, and each second valve 325 comprises a valve core 3252 and a valve body 3251; the two drive seats 326 are fixedly connected with the valve body 3251 one by one, and a control cavity 3261 is formed in each drive seat 326; one end of the valve core 3252 extends into the control cavity 3261, and the valve core 3252 is slidingly connected with the drive seat 326 and moves towards or away from the valve body 3251; the identification assembly injects fluid into one of the control cavities 3261 according to the position of the sliding seat 102.

[0088] Specifically, the identification assembly comprises two storage tanks 327, two pistons 328 and two communication pipes 329; the two storage tanks 327 are respectively arranged on two sides of the driving cavity 1011 along the first direction, and the storage tanks 327 are fixedly connected with the base 101; the two pistons 328 correspond to the storage tanks 327 one by one, one end of the piston 328 extends into the storage tank 327, the other end of the piston 328 has a force receiving surface, the piston 328 is in sliding connection with the storage tank 327, and the piston 328 moves along the central axis of the storage tank 327; the communication pipe 329 connects the storage tanks 327 arranged on the two sides of the driving cavity 1011 along the first direction and the control cavity 3261.

[0089] Optionally, the piston 328 is reset by the transfer of fluid pressure.

[0090] Optionally, the identification assembly further comprises a second elastic member 330 fixedly connected between the piston 328 and the storage tank 327, the second elastic member 330 has a pre-tightening force for moving the piston 328 away from the storage tank 327, and the second elastic member 330 can be a spring or a spring rod.

[0091] When the sliding seat 102 moves to the preset position along the first direction, the sliding seat 102 presses the force receiving surface of the corresponding piston 328, the piston 328 slides in the storage tank 327 after being pressed, the pre-stored fluid in the storage tank 327 is pressed into the corresponding control cavity 3261 through the communication pipe 329, the fluid enters the control cavity 3261 and pushes the valve core 3252 to move, so that the end of the valve core 3252 is separated from the sealing contact with the valve body 3251, thereby enabling the jacking cavity 2031 to communicate with the transfer box 301, and the fluid in the jacking cavity 2031 flows back to the transfer box 301, so that the balance lever 201 changes to a horizontal state.

[0092] In some embodiments, referring to Figure 3 , the displacement unit 20 further comprises a plurality of trigger columns 206 slidingly arranged in the inner support cover 1032, the trigger columns 206 abut against the inner wall of the outer support cover 1031, and the trigger columns 206 move along the radial direction of the inner support cover 1032.

[0093] The plurality of trigger columns 206 slidingly arranged in the inner support cover 1032 uniformly cover the inner wall of the outer support cover 1031, forming a dense force transmission node and a multi-point distributed sensing mechanism, so that the impact signal can be accurately captured through the radial displacement of the nearest trigger column 206 no matter where the rock hits the center or the edge region of the protective cover 103; the direct abutment design of the trigger column 206 and the inner wall of the outer support cover 1031 further spreads the point impact force to the whole inner support cover 1032 in time, avoiding delay of the avoidance opportunity due to local deformation not being recognized.

[0094] In some embodiments, referring to Figure 5The base 203 is fixedly connected with the base 101, and the end of the lifting rod 204 away from the base 203 is hingedly connected with a compensation block 2041, the hinging shaft of the lifting rod 204 and the compensation block 2041 is perpendicular to the moving direction of the lifting rod 204, and the compensation block 2041 is slidingly connected with the balance rod 201 and moves along the length direction of the balance rod 201.

[0095] When the lifting rod 204 is extended by the fluid in the jacking chamber 2031, the top end of the lifting rod 204 drives the compensation block 2041 to move through the hinging shaft, and since the hinging shaft of the compensation block 2041 and the lifting rod 204 is perpendicular to the moving direction of the lifting rod 204, the compensation block 2041 can freely rotate around the shaft, and meanwhile, the compensation block 2041 itself is slidingly connected with the balance rod 201 through a sliding groove or a guide rail, so that it can move horizontally along the length direction of the balance rod 201.

[0096] When the lifting rod 204 is lifted, the compensation block 2041 first rotates through the hinge to adapt to the initial inclination of the balance rod 201, and then slides along the balance rod 201 under the action of the continuous jacking force, so as to decompose the vertical thrust into a lifting component and a horizontal adjusting component of the balance rod 201. This process effectively absorbs the angle deviation between the lifting rod 204 and the balance rod 201 caused by manufacturing tolerances, installation errors or vibration of the base 101, and avoids local stress concentration.

[0097] The implementation principle of the embodiment of the application is that, taking the leftmost position of the protective cover 103 in the following figure as an example, at this time, the first valve 318 is in an open state, and the second valve 325 is in a closed state. Figure 4

[0098] When the protective cover 103 is extruded, and the extrusion force borne by the protective cover 103 exceeds a preset value, the fluid in the deformation chamber 1034 is extruded into the first region 311, the fluid entering the first region 311 extrudes the left partition plate 309, the left partition plate 309 extrudes the fluid in the second region 310, so that the fluid in the second region 310 enters the left pressing chamber 3131, thereby causing the left limiting rod 314 to drive the corresponding limiting block 308 to move downward, so that the left limiting block 308 is separated from the transmission rod 307; meanwhile, the fluid entering the first region 311 passes through the first filling pipe 303 and enters the left jacking chamber 2031, the fluid entering the left jacking chamber 2031 lifts the corresponding lifting rod 204, thereby causing the left side of the balance rod 201 to be lifted, so that the sliding block 202 drives the protective cover 103 to slide from left to right.

[0099] ​During the sliding of the protective cover 103 from left to right, the protective cover 103 drives the transmission rod 307 to move from left to right, the transmission rod 307 drives the transmission gear 321 to roll along the transmission rack 322 from left to right, so that the transmission gear 321 rotates around the central axis thereof, the transmission gear 321 drives the first magnetic wheel 320 to rotate, the first magnetic wheel 320 drives the left second magnetic wheel 323 to rotate through the left transition magnetic wheel 324, the left second magnetic wheel 323 drives the left linkage rod 319 to rotate, so as to gradually close the first valve 318, after the first magnetic wheel 320 is out of the magnetic force range of the left transition magnetic wheel 324, the first valve 318 is just closed; after the first magnetic wheel 320 enters the magnetic force range of the right transition magnetic wheel 324, the first magnetic wheel 320 drives the right second magnetic wheel 323 to rotate through the right transition magnetic wheel 324, the right second magnetic wheel 323 drives the right linkage rod to rotate, so as to gradually open the second valve 325, after the protective cover 103 moves to the rightmost side, the second valve 325 is completely opened.

[0100] When the protective cover 103 moves to the rightmost side, the protective cover 103 extrudes the right piston 328, the right piston 328 is extruded to make the fluid in the right storage tank 327 flow to the left control cavity 3261 through the corresponding communication pipe 329, so as to lift the left valve core 3252, after the left valve core 3252 is lifted, the fluid in the left lifting cavity 2031 flows back to the second area 310 through the first backflow pipe 305, at this time, the left lifting rod 204 falls down, so that the balance rod 201 restores to be horizontal.

[0101] The working principle of the protective cover 103 moving from right to left is the same, and details are not described herein.

[0102] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mine intrinsically safe camera with protection function, suitable for use as a camera, characterized in that: include: The protective unit includes a base, a slide slidably mounted on the base, and a protective cover fixed to the slide, wherein the base is provided with a driving cavity communicating with the outside, the slide moves along a first direction, the protective cover includes an outer support cover, an inner support cover, and an isolation cover sequentially sleeved from the outside to the inside, the inner support cover and the isolation cover enclosing a deformation cavity, and the isolation cover is used to install the camera; a shift unit disposed in the driving cavity, the shift unit comprising a balance bar, a slider slidably disposed on the balance bar, and a lifting assembly disposed at both ends of the balance bar along the first direction, the slider moving along the length direction of the balance bar, the slider being connected to the slide seat, the lifting assembly comprising a base having a lifting cavity and a lifting rod disposed in the lifting cavity, the lifting rod being slidably connected to the base, and the moving direction of the lifting rod being perpendicular to the first direction; The distribution unit is connected to the lifting cavity and the deformation cavity, and is used for distributing fluid into the two lifting cavities and resetting the fluid.

2. The intrinsically safe mining camera with protection function as claimed in claim 1, characterized in that: The distribution unit includes: A transfer box is disposed in the driving cavity and fixedly connected to the base; an overflow pipe connected to the transfer box and the deformation chamber; a perfusion mechanism comprising a first perfusion pipe connected to the transfer box and one of the lifting chambers, a second perfusion pipe connected to the transfer box and the other of the lifting chambers, and a first control structure for controlling the opening and closing of the first perfusion pipe and the second perfusion pipe; The reinjection mechanism includes a first reinjection pipe connected to the transfer box and one of the lifting chambers, a second reinjection pipe connected to the transfer box and the other lifting chamber, and a second control structure for controlling the opening and closing of the first reinjection pipe and the second reinjection pipe.

3. The intrinsically safe camera for mining with protection function as claimed in claim 2, characterized in that: The slider is fixedly connected with a synchronization rod; The allocation unit further includes a determination mechanism, which includes: a transmission rod connected to the slide, the transmission rod being provided with an avoidance groove for movement of the synchronization rod, wherein an extension direction of the avoidance groove is perpendicular to the first direction; Two limit blocks are provided on both sides of the driving cavity along the first direction, and the limit blocks have a first working state of abutting against the transmission rod and a second working state of being separated from the transmission rod; Two limiting structures corresponding to the limiting blocks one by one; When the force applied to the protective cover is less than a preset value, the limiting structure causes the limiting block to be in the first working state; when the force applied to the protective cover reaches the preset value, the limiting structure causes the limiting block to be in the second working state.

4. The intrinsically safe mining camera with protection function as claimed in claim 3, characterized in that: The distribution unit further includes two partitions disposed opposite to each other in the transfer box, the two partitions dividing the transfer box into a second area, a first area, and a third area sequentially arranged along a second direction, the partitions being slidably connected to the transfer box along the second direction, the overflow pipe being in communication with the first area, the first infusion pipe and the second infusion pipe both being in communication with the first area, the inner diameter of the overflow pipe being larger than the inner diameters of the first infusion pipe and the second infusion pipe, the first return pipe being in communication with the second area, and the second return pipe being in communication with the third area; The limiting structure includes: A limit seat is provided with a downward pressure cavity, and the limit seat is fixedly connected to the base; a limiting rod disposed in the lower pressure chamber, the limiting rod being slidably connected to the limiting seat, the moving direction of the limiting rod being perpendicular to the first direction, and the limiting rod being fixedly connected to the limiting block; a deformable member, fixedly connected between the limiting rod and the limiting seat, and having a pre-tightening force for causing the limiting rod to move away from the limiting seat; The flow diversion component includes a first flow diversion pipe connected to one of the lower pressure chambers and the second area, and a second flow diversion pipe connected to the other lower pressure chamber and the third area.

5. The intrinsically safe camera for mining with protection function as claimed in claim 3, characterized in that: The first control structure includes: two first valves, respectively provided on the first perfusion pipe and the second perfusion pipe; Two linkage rods, fixedly connected to the runner of the first valve in a one-to-one correspondence, the linkage rods being coaxial with the runner and rotatably connected to the base, and the rotation axes of the linkage rods being perpendicular to the first direction; The transmission assembly is arranged between the slide and the linkage rod, and is used to enable the slide to drive the linkage rod to rotate.

6. The intrinsically safe camera for mining with protection function as claimed in claim 5, characterized in that: The transmission rod is fixedly connected to the slide seat; The transmission assembly comprises: a first magnetic wheel, rotatably connected to the outer periphery of the transmission rod, wherein the rotation axis of the first magnetic wheel is parallel to the rotation axis of the linkage rod; a transmission gear, fixedly connected to the outer periphery of the first magnetic wheel; a transmission rack extending along the first direction and meshing with the transmission gear, the transmission rack also being fixedly connected to the base; a second magnetic wheel, fixedly connected to the outer periphery of the linkage rod; The transition magnetic wheel is provided between the first magnetic wheel and the second magnetic wheel. The transition magnetic wheel is rotatably connected to the base. The rotation axis of the transition magnetic wheel is perpendicular to the rotation axis of the linkage rod.

7. The intrinsically safe camera for mining with protection function as claimed in claim 3, characterized in that: The second control structure includes: Two second valves, respectively provided on the first re-injection pipe and the second re-injection pipe, the second valve comprising a valve core and a valve body; Two drive seats are fixedly connected to the valve body in a one-to-one correspondence. A control cavity is defined in the drive seats. One end of the valve core extends into the control cavity. The valve core is slidably connected to the drive seats, and the valve core moves toward or away from the valve body. An identification component injects fluid into one of the control chambers according to the position of the slide.

8. The intrinsically safe camera for mining with protection function as claimed in claim 7, characterized in that: The identification component includes: Two material storage tanks are respectively arranged on both sides of the driving cavity along the first direction, and the material storage tanks are fixedly connected to the base; Two pistons, corresponding one to the storage tanks, one end of the piston extends into the storage tank, the other end of the piston has a force-bearing surface, the piston is slidably connected to the storage tank, and the piston moves along the central axis of the storage tank; Two communicating pipes are used to connect the material storage tank and the control chamber, which are arranged on both sides of the driving chamber along the first direction.

9. The intrinsically safe camera for mining with protection function as claimed in claim 3, characterized in that: The displacement unit further includes a plurality of triggering posts slidably arranged on the inner support cover, the triggering posts abutting against the inner wall of the outer support cover, and the triggering posts move along the radial direction of the inner support cover.

10. The intrinsically safe camera for mining with protection function as claimed in claim 1, characterized in that: The base is fixed to the pedestal, and a compensation block is hingedly connected to one end of the lifting rod away from the base. The hinge axis of the lifting rod and the compensation block is perpendicular to the moving direction of the lifting rod. The compensation block is slidably connected to the balance bar, and the compensation block moves along the length direction of the balance bar.

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