阅读说明：本技术 一种红外对射检测型纵撕传感器 (Infrared correlation detection type longitudinal tearing sensor ) 是由 刘晓明 于 2020-12-02 设计创作，主要内容包括：本发明涉及检测技术领域,具体涉及一种红外对射检测型纵撕传感器。包括第一弹性囊、第二弹性囊、连杆机构、红外激光发射器和红外成像仪；红外激光发射器沿左右方向间隔设置在第二弹性囊内底部的左端,红外成像仪设置在第二弹性囊内底部的右端；传送带产生形变凸起后向下挤压第一弹性囊,进而向下挤压第二弹性囊使第二弹性囊产生形变,红外激光发射器发出的光线改变反射路径到达红外成像仪的接收范围以外,第一弹性囊每次被挤压后体积均增大,以使第二弹性囊的形变累加。本发明通过将微小的形变凸起造成的异变在传送带传送的过程中重复累加,以此使得传送带在将要纵撕破损时能够及时被发现。(The invention relates to the technical field of detection, in particular to an infrared correlation detection type longitudinal tearing sensor. The infrared imaging device comprises a first elastic bag, a second elastic bag, a link mechanism, an infrared laser emitter and an infrared imager; the infrared laser transmitters are arranged at the left end of the inner bottom of the second elastic bag at intervals in the left-right direction, and the infrared imager is arranged at the right end of the inner bottom of the second elastic bag; the conveyer belt produces the protruding first elasticity bag of backward extrusion of deformation, and then extrudees the second elasticity bag downwards and make the second elasticity bag produce deformation, and the light that infrared laser emitter sent changes outside the receiving range that reflection path reachd infrared imager, and first elasticity bag is all increased by the volume after the extrusion at every turn to the deformation that makes the second elasticity bag accumulates. The invention repeatedly accumulates the variation caused by the tiny deformation bulges in the conveying process of the conveying belt, so that the conveying belt can be found in time when the conveying belt is about to be longitudinally torn.)

1. The utility model provides an infrared correlation detection type indulges and tears sensor for mining belt conveyor's detection, mining belt conveyor includes conveyer belt and frame, the conveyer belt pass through the transfer gear install in the top of frame to carry out material conveying, its characterized in that: the method comprises the following steps:

the first elastic bags are arranged in the rack at intervals along the width direction of the conveyor belt;

the second elastic bag is arranged on the frame and is positioned below the first elastic bag, an elastic chamber is connected between the second elastic bag and the first elastic bag through a one-way channel, and carbon disulfide liquid is filled in the second elastic bag, the first elastic bag and the elastic chamber; after the conveying belt generates deformation bulges, the first elastic bag is extruded downwards, the second elastic bag is further extruded downwards, and carbon disulfide liquid in the second elastic bag enters the elastic chamber through the one-way channel;

the connecting rod mechanisms are arranged on the frame and connected with the lower part of each first elastic bag, the connecting rod mechanisms are configured to expand downwards under the extrusion of the first elastic bags and keep the current state, so that the lower parts of the first elastic bags are kept in the current state, the volume of the first elastic bags is increased after the upper parts of the first elastic bags are reset due to the separation of the deformation bulges, and carbon disulfide liquid in the elastic chambers enters the inner parts of the first elastic bags, so that the expanded first elastic bags are filled with the carbon disulfide liquid; the enlarged first elastic bag extrudes the second elastic bag again under the action of re-extrusion of the deformation bulge, so that the downward deformation of the upper part of the second elastic bag is accumulated;

the left end of the bottom in the second elastic bag is provided with a plurality of infrared laser transmitters at intervals along the left-right direction, and the right end of the bottom in the second elastic bag is provided with an infrared imager; in a conventional state, light rays emitted by each infrared laser emitter reach the infrared imager through the reflection of a contact surface between the second elastic bag and carbon disulfide liquid in the second elastic bag, and are received by the infrared imager; when the upper portion of the second elastic bag deforms downwards and gradually accumulates, at least part of light rays emitted by the infrared laser emitter change reflection paths to reach the outside of a receiving range of the infrared imager, the quantity of the light rays received by the infrared imager is less than that of the light rays emitted by the infrared laser emitter, and the infrared imager emits an alarm to prompt a fault.

2. An infrared correlation detection type longitudinal tearing sensor according to claim 1, characterized in that: the frame is internally provided with a first cavity and a second cavity which are communicated from top to bottom, the first cavity is provided with a plurality of first elastic bags at intervals along the left-right direction, the first elastic bags are positioned in the first cavity, and the second elastic bags are positioned in the second cavity;

the connecting rod mechanism comprises a first rotating plate, a second connecting plate and a third connecting plate, the first rotating plate, the second connecting plate and the third connecting plate are all connected with the bottom of the outer wall of the first elastic bag, and the number of the first rotating plates is two, and the two first rotating plates are respectively installed at the lower ends of the left side wall and the right side wall of the first cavity through a single-side rotating mechanism so as to only allow the two first rotating plates to rotate downwards; one ends of the second connecting plate and the third connecting plate are respectively hinged with the two first rotating plates, and the other ends of the second connecting plate and the third connecting plate are in sliding insertion connection.

3. An infrared correlation detection type longitudinal tear sensor as claimed in claim 2, wherein: the unilateral rotating mechanism comprises a connecting shaft arranged in the front-back direction, mounting holes are formed in the left side wall and the right side wall of the first cavity, a plurality of first elastic pieces are uniformly distributed on the peripheral wall surface of the connecting shaft, a plurality of second elastic pieces are uniformly distributed on the inner peripheral wall surface of each mounting hole, and the connecting shaft is inserted into the mounting holes and each first elastic piece is located between two adjacent second elastic pieces, so that the connecting shaft can only rotate in one direction.

4. An infrared correlation detection type longitudinal tearing sensor according to claim 1, characterized in that: a pulley mechanism is arranged between the conveyor belt and the first elastic bag, the pulley mechanism is mounted on the frame, and the pulley mechanism is configured to downwards extrude the first elastic bag under the extrusion of the deformation bulge, further downwards extrude the second elastic bag, and reset after the deformation bulge leaves.

5. An infrared correlation detection type longitudinal tearing sensor according to claim 4, wherein: the pulley mechanism comprises a pulley, a support, a pulley column and an elastic block; the pulley is arranged between the two supports and can be rotatably arranged on the pulley column, and the elastic block is arranged on the supports and is positioned below the pulley column.

6. An infrared correlation detection type longitudinal tearing sensor according to claim 3, characterized in that: and limiting platforms are arranged on the left side wall and the right side wall of the first cavity so as to prevent the first rotating plate from turning upwards.

7. An infrared correlation detection type longitudinal tearing sensor according to claim 1, characterized in that: the left end of the bottom in the second elastic bag is provided with a diffuse reflection table with a rough surface, the surface of the diffuse reflection table is provided with a first coating for absorbing infrared rays, and the infrared laser emitter is installed on the diffuse reflection table.

8. An infrared correlation detection type longitudinal tearing sensor according to claim 1, characterized in that: the utility model discloses an infrared imaging instrument, including first elastic bag, second elastic bag, diffuse reflection pad, infrared imager, diffuse reflection pad's lower tip is provided with the rough diffuse reflection pad in surface, diffuse reflection pad's surface is provided with the second coating that absorbs infrared ray, diffuse reflection pad's upper end position in infrared imager's middle part top, diffuse reflection pad's lower tip is.

9. An infrared correlation detection type longitudinal tearing sensor according to claim 3, characterized in that: an elastic pad connected with all the first chambers is arranged above the upper side wall of each first chamber.

10. An infrared correlation detection type longitudinal tearing sensor according to claim 1, characterized in that: the one-way channel comprises a liquid inlet pipe, a liquid outlet pipe, a liquid distribution main pipe and a plurality of liquid distribution pipes, the liquid inlet pipe is communicated with the second elastic bag and the elastic cavity, the liquid distribution pipes are communicated with the liquid distribution main pipe after being communicated with one first elastic bag respectively, and the liquid outlet pipe is communicated with the elastic cavity and the liquid distribution main pipe; the liquid inlet pipe is provided with a first one-way valve for blocking liquid in the elastic cavity from flowing into the second elastic bag, and the liquid outlet pipe is provided with a second one-way valve for blocking liquid in the first elastic bag from flowing into the second cavity.

Technical Field

The invention relates to the technical field of detection, in particular to an infrared correlation detection type longitudinal tearing sensor.

Background

The belt conveyor for the coal mine has the characteristics of large transportation amount, complex working environment, strong bearing capacity, long transportation distance and the like, and a conveyor belt serving as a main loading part of the belt conveyor for the coal mine is extremely easy to longitudinally tear, so that the tearing detection device is arranged below a coal dropping point of the conveyor belt in a direction of 10-15 m along the coal flow direction (when the belt conveyor is driven by the head part).

In the prior art, tear detection of a conveyor belt is performed in various ways, for example, the application numbers are: 201610722297.1, the authorization notice number is: chinese patent document CN 106185240B discloses a method and an apparatus for preventing tearing of an infrared correlation type coal conveying belt, wherein an infrared emitter, an infrared receiver and two coal receiving plates are disclosed, the two coal receiving plates are disposed between an upper belt and a lower belt, and the infrared emitter and the infrared receiver are respectively located between two ends of the two coal receiving plates. When the coal receiving device works, if the adhesive tape is not torn, the infrared receiver can receive infrared rays emitted by the infrared emitter through a gap between the two coal receiving plates; when the adhesive tape is torn, the coal on the adhesive tape is scattered into the coal access plate and is gradually piled up, the infrared rays emitted by the infrared emitter are cut off, the infrared receiver cannot receive the infrared signals, the infrared receiver outputs a group of normally closed switching value signals (the normally closed nodes of the normally closed switching value signals act), and the controller and the monitoring center judge whether the adhesive tape is torn or not through the change of the switching value nodes, confirm that the adhesive tape is torn, alarm and send a stop instruction.

However, this prior art technique can only detect a longitudinal tear in the conveyor belt, and the tear is sufficient to allow the transported material to fall off, and cannot prevent it.

Disclosure of Invention

According to at least one defect of the prior art, the invention provides an infrared correlation detection type longitudinal tearing sensor, which is used for solving the problem that the existing mining belt conveyor cannot carry out pre-detection before belt longitudinal tearing.

The invention relates to an infrared correlation detection type longitudinal tearing sensor, which adopts the following technical scheme: the method comprises the following steps:

the first elastic bags are arranged in the rack at intervals along the width direction of the conveyor belt;

the second elastic bag is arranged on the frame and is positioned below the first elastic bag, an elastic chamber is connected between the second elastic bag and the first elastic bag through a one-way channel, and carbon disulfide liquid is filled in the second elastic bag, the first elastic bag and the elastic chamber; after the conveying belt generates deformation bulges, the first elastic bag is extruded downwards, the second elastic bag is further extruded downwards, and carbon disulfide liquid in the second elastic bag enters the elastic chamber through the one-way channel;

the connecting rod mechanisms are configured to expand downwards under the extrusion of the first elastic bags and keep the current state, so that the lower parts of the first elastic bags are kept in the current state, the volume of the first elastic bags is increased after the upper parts of the first elastic bags are reset due to the separation of the deformation bulges, and carbon disulfide liquid in the elastic cavities enters the first elastic bags, so that the enlarged first elastic bags are filled with the carbon disulfide liquid; the enlarged first elastic bag extrudes the second elastic bag again under the action of re-extrusion of the deformation bulge, so that the downward deformation of the upper part of the second elastic bag is accumulated;

the left end of the bottom in the second elastic bag is provided with a plurality of infrared laser transmitters at intervals along the left-right direction, and the right end of the bottom in the second elastic bag is provided with an infrared imager; in a conventional state, light rays emitted by each infrared laser emitter reach the infrared imager through reflection of a contact surface between the second elastic bag and carbon disulfide liquid in the second elastic bag, and are received by the infrared imager; when the upper portion of the second elastic bag deforms downwards and gradually accumulates, at least part of light rays emitted by the infrared laser emitter change reflection paths to reach the outside of a receiving range of the infrared imager, the quantity of the light rays received by the infrared imager is less than that of the light rays emitted by the infrared laser emitter, and the infrared imager emits an alarm to prompt a fault.

Optionally, a plurality of first chambers and a plurality of second chambers which are communicated with each other are arranged in the rack from top to bottom, the first chambers are arranged at intervals in the left-right direction, the first elastic bags are located in the first chambers, and the second elastic bags are located in the second chambers;

the connecting rod mechanism comprises a first rotating plate, a second connecting plate and a third connecting plate, the first rotating plate, the second connecting plate and the third connecting plate are all connected with the bottom of the outer wall of the first elastic bag, and the number of the first rotating plates is two, and the two first rotating plates are respectively installed at the lower ends of the left side wall and the right side wall of the first cavity through a single-side rotating mechanism so as to only allow the two first rotating plates to rotate downwards; one ends of the second connecting plate and the third connecting plate are respectively hinged with the two first rotating plates, and the other ends of the second connecting plate and the third connecting plate are in sliding insertion connection.

Optionally, the single-side rotating mechanism includes a connecting shaft disposed along a front-back direction, mounting holes are disposed in both left and right side walls of the first chamber, a plurality of first elastic pieces are uniformly distributed on a peripheral wall surface of the connecting shaft, a plurality of second elastic pieces are uniformly distributed on an inner peripheral wall surface of the mounting holes, and the connecting shaft is inserted into the mounting holes and each first elastic piece is located between two adjacent second elastic pieces, so that the connecting shaft can rotate only along one direction.

Optionally, a pulley mechanism is disposed between the conveyor belt and the first elastic bag, the pulley mechanism is mounted on the frame, and the pulley mechanism is configured to press the first elastic bag downwards under the extrusion of the deformation protrusion, so as to press the second elastic bag downwards, and reset after the deformation protrusion leaves.

Optionally, the pulley mechanism includes a pulley, a support, a pulley post, and an elastic block; the pulley is arranged between the two supports and can be rotatably arranged on the pulley column, and the elastic block is arranged on the supports and is positioned below the pulley column.

Optionally, the left and right side walls of the first chamber are provided with limit platforms to prevent the first rotating plate from turning upwards.

Optionally, a diffuse reflection table with a rough surface is arranged at the left end of the bottom in the second elastic bag, a first coating for absorbing infrared rays is arranged on the surface of the diffuse reflection table, and the infrared laser emitter is mounted on the diffuse reflection table.

Optionally, a diffuse reflection pad with a rough surface is arranged at the right end of the inner wall of the second elastic bag, a second coating for absorbing infrared rays is arranged on the surface of the diffuse reflection pad, the upper end of the diffuse reflection pad is located above the middle of the infrared imager, and the lower end of the diffuse reflection pad is connected with the infrared imager.

Optionally, an elastic pad connecting all the first chambers is arranged above the upper side wall of the first chambers.

Optionally, the one-way channel includes a liquid inlet pipe, a liquid outlet pipe, a liquid distribution main pipe and a plurality of liquid distribution pipes, the liquid inlet pipe is communicated with the second elastic bag and the elastic cavity, the plurality of liquid distribution pipes are communicated with the liquid distribution main pipe after being communicated with one first elastic bag, and the liquid outlet pipe is communicated with the elastic cavity and the liquid distribution main pipe; the liquid inlet pipe is provided with a first one-way valve for blocking liquid in the elastic cavity from flowing into the second elastic bag, and the liquid outlet pipe is provided with a second one-way valve for blocking liquid in the first elastic bag from flowing into the second cavity.

The invention has the beneficial effects that: the infrared laser imaging device is provided with the first elastic bag and the second elastic bag, the infrared laser emitter and the infrared imager are arranged in the second elastic bag, the first elastic bag is extruded through the deformation bulge of the conveying belt, and then the second elastic bag is extruded, so that the second elastic bag is deformed, and the light transmission path of the infrared laser emitter is changed. After the extrusion at every turn, the volume grow of first elasticity bag through the protruding repeated extrusion of deformation, changes the bellied variation of deformation into the accumulation of second elasticity bag deformation, and the light beam received is less than infrared laser emitter's quantity on the infrared imager, sends out the police dispatch newspaper, the suggestion trouble. Therefore, even if the first elastic bag is repeatedly extruded by the tiny bulges, the second elastic bag can be enabled to generate enough deformation, and the alarm of the infrared imager is triggered. Because the tiny bulges are easy to tear after being used for many times, the invention can be found in time when the conveyor belt is about to be torn longitudinally, thereby preventing the situation in advance.

The carbon disulfide liquid in the second elastic bag flows into the elastic chamber; under link mechanism's effect, lower part deformation can be maintained to first elasticity bag, and the upper portion deformation at first gasbag resets the back for the bulky grow of first elasticity bag, the two fluidization carbon liquid in the elasticity cavity get into first elasticity bag, make the inside carbon disulfide liquid that is full of first elasticity bag after the grow, the extrusion of the next time of being convenient for. The repeated accumulation converts the deformation bulge into the deformation of the second elastic bag and continuously amplifies the deformation, and the structure is compact and the design is ingenious.

Drawings

In order to illustrate more clearly the embodiments of the invention or the solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained by those skilled in the art without inventive exercise from these drawings, it being understood that these drawings are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an infrared correlation detection type longitudinal tearing sensor according to the present invention when no abnormality is detected.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view of fig. 2 at C.

Fig. 4 is a partially enlarged view of fig. 1 at B.

FIG. 5 is a schematic view of the deformed convex pressing pulley assembly of the conveyor belt of the present invention.

Figure 6 is a schematic view of the deformed projections of the belt exiting the pulley assembly of the present invention.

Fig. 7 is a schematic structural diagram of an infrared correlation detection type longitudinal tearing sensor according to the present invention when detecting an abnormality.

Fig. 8 is a partial enlarged view of fig. 7 at D.

Fig. 9 is a partial enlarged view of fig. 7 at E.

Fig. 10 is a schematic view of the pulley assembly of the present invention.

In the figure: 1. a transfer wheel; 2. a conveyor belt; 3. a frame; 4. a first chamber; 5. a pulley mechanism; 6. a one-way channel; 7. an elastic chamber; 8. a pulley; 9. a support; 10. a slider; 11. an elastic block; 12. a connecting arm; 14. an elastic pad; 15. a first elastic bladder; 16. a first rotating plate; 17. a second connecting plate; 18. a third connecting plate; 19. an infrared laser transmitter; 20. a fixing ring; 21. a diffuse reflection stage; 22. a second elastic bag; 23. a limiting table; 24. a connecting shaft; 25. a second chamber; 28. a first check valve; 30. a second one-way valve; 31. an infrared imager; 32. a diffuse reflection pad; 44. a pulley post; 61. a liquid inlet pipe; 62. a liquid outlet pipe; 63. a liquid separation main pipe; 64. a liquid separating pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, the infrared correlation detection type longitudinal tearing sensor (hereinafter referred to as longitudinal tearing sensor) of the invention is used for detection of a mining belt conveyor, the mining belt conveyor comprises a conveyor belt 2 and a frame 3, and the conveyor belt 2 is installed above the frame 3 through a conveyor wheel 1 to convey materials. This indulge and tear sensor and select one of them position along conveyer belt 2's traffic direction and install in frame 3 to detect conveyer belt 2, prevent conveyer belt 2 indulge to tear the fracture, also can be as required spaced select two positions or three position or all the other a plurality of positions installation, in order to improve the accuracy and the timeliness that detect.

The longitudinal tearing sensor comprises a plurality of first elastic bags 15, a plurality of second elastic bags 22, a plurality of link mechanisms, a plurality of infrared laser emitters 19 and an infrared imager 31. A plurality of first elastic bags 15 are arranged in the frame 3 at intervals along the width direction of the conveyor belt 2. The second elastic bag 22 is mounted on the frame 3 and located below the first elastic bag 15, the elastic chamber 7 is connected between the second elastic bag 22 and the first elastic bag 15 through the one-way channel 6, and the second elastic bag 22, the first elastic bag 15 and the elastic chamber 7 are filled with carbon disulfide liquid. After the conveyor belt 2 generates a deformation bulge, the first elastic bag 15 is downwards extruded, the second elastic bag 22 is further downwards extruded, and carbon disulfide liquid in the second elastic bag 22 enters the elastic chamber 7 through the one-way channel 6. And a plurality of link mechanisms are arranged on the frame 3 and connected with the lower part of each first elastic bag 15, and the link mechanisms are configured to expand downwards under the extrusion of the first elastic bags 15 and keep the current state so as to keep the lower parts of the first elastic bags 15 in the current deformation state, and further the volume of the first elastic bags 15 is increased after the upper parts of the first elastic bags 15 are reset due to the separation of the deformation bulges. At this moment, the inside negative pressure that is of first elasticity bag 15, and the pressure grow in the elasticity chamber 7, both combined actions make the inside of carbon disulfide liquid entering first elasticity bag 15 in the elasticity chamber 7 to the inside carbon disulfide liquid that is full of first elasticity bag 15 after the grow, be convenient for extrude next time. When the deformation protrusion moves above the first elastic bag 15 again, the enlarged first elastic bag 15 extrudes the second elastic bag 22 again under the action of the deformation protrusion extruding again, so that the downward deformation of the upper part of the second elastic bag 22 is accumulated.

The plurality of infrared laser transmitters 19 are arranged at the left end of the bottom in the second elastic bag 22 at intervals in the left-right direction, the infrared imager 31 is arranged at the right end of the bottom in the second elastic bag 22, and the plurality of infrared laser transmitters 19 are inclined towards the infrared imager 31 at the same inclination angle. Under normal conditions, light emitted by each infrared laser emitter 19 reaches infrared imager 31 through multiple reflections at the contact surface between second elastic bladder 22 and the carbon disulfide liquid therein (mainly, multiple reflections at the upper contact surface and the lower contact surface between second elastic bladder 22 and the carbon disulfide liquid therein), and is received by infrared imager 31. When the upper portion of the second elastic bag 22 deforms downward and gradually accumulates, so that at least part of light emitted by the infrared laser emitter 19 changes the reflection path to reach the outside of the receiving range of the infrared imager 31, the quantity of light received by the infrared imager 31 is less than that of light emitted by the infrared laser emitter 19, and the infrared imager 31 gives an alarm to prompt a fault. Through the repeated accumulation of the in-process that conveys 2 conveyer belts that the inequality that lead to the fact the deformation of small deformation is protruding, at this in-process, if the protruding grow of deformation then the variation quantity accumulates in the lump because even little protruding through after using many times, cause tearing very easily, make conveyer belt 2 can in time be found when will indulging the tear damage through above-mentioned scheme, avoid tearing because of conveyer belt 2 and cause unnecessary economic loss or the incident that takes place. It should be noted that the second elastic bag 22 is made of transparent rubber with stable properties, generally has a refractive index of 1.5, and has a smooth inner surface, which is beneficial to light reflection; the rough outer surface can prevent the refracted ray from being reflected again. The refractive index of carbon disulfide filled in the second elastic bag 22 is 1.6276, and the refractive index of carbon disulfide is higher than that of the second elastic bag 22, so that total reflection of infrared light in a normal state can be further ensured.

In this embodiment, the frame 3 is provided with a first chamber 4 and a second chamber 25 communicating with each other from top to bottom, the first chamber 4 is provided with a plurality of chambers at intervals along the left-right direction, the first elastic bag 15 is located in the first chamber 4, and the second elastic bag 22 is located in the second chamber 25.

The link mechanism includes a first rotation plate 16, a second connection plate 17 and a third connection plate 18, the first rotation plate 16, the second connection plate 17 and the third connection plate 18 are all connected with the bottom of the outer wall of the first elastic bag 15, two first rotation plates 16 are provided and are respectively mounted at the lower ends of the left and right side walls of the first chamber 4 through a single-side rotation mechanism to allow only the two first rotation plates 16 to rotate downward. One ends of the second connecting plate 17 and the third connecting plate 18 are respectively hinged with the two first rotating plates 16, and the other ends of the second connecting plate 17 and the third connecting plate 18 are inserted in a sliding manner. The two first rotation plates 16 are rotated downward to move the second and third connecting plates 17 and 18 away from each other and downward to squeeze the second elastic bag 22.

In this embodiment, unilateral slewing mechanism includes the connecting axle 24 that sets up along the fore-and-aft direction, all is provided with the mounting hole in the left and right sides wall of first cavity 4, and the perisporium face evenly distributed of connecting axle 24 has a plurality of first shell fragments, and the interior week wall evenly distributed of mounting hole has a plurality of second shell fragments, and connecting axle 24 inserts the mounting hole and every first shell fragment is located between two adjacent second shell fragments to make connecting axle 24 only can rotate along a direction. Furthermore, the first elastic sheet and the second elastic sheet can rotate and incline along different directions so as to ensure the transmission performance of the unilateral transmission mechanism.

In this embodiment, a pulley mechanism 5 is disposed between the conveyor belt 2 and the first elastic bag 15, the pulley mechanism 5 is mounted on the frame 3, and the pulley mechanism 5 is configured to press the first elastic bag 15 downward under the pressing of the deformation protrusion, and further press the second elastic bag 22 downward, and reset after the deformation protrusion leaves. Each first elastic bag 15 can be provided with a plurality of groups of pulley mechanisms 5 correspondingly, so that the conveyor belt 2 can be supported more stably and more uniformly under stress, and meanwhile, the deformation protrusions can be conveniently and uniformly transmitted to the first elastic bags 15 through the pulley mechanisms 5.

In the present embodiment, the pulley mechanism includes the pulley 8, the abutment 9, the pulley post 44, and the elastic block 11. The support 9 is installed on the frame 3 through the connecting arm 12, two support 9 are arranged at intervals, the pulley posts 44 can be installed on the two support 9 in a vertical sliding mode, the pulley 8 is located between the two support 9 and is rotatably installed on the pulley posts 44, and the elastic block 11 is arranged on the support 9 and is located below the pulley posts 44. Pulley 8 receives the bellied extrusion of deformation for pulley post 44 overcomes the elasticity of elastic block 11 and moves down along with pulley 8, and pulley 8 downstream extrudes first elasticity bag 15, and the protruding back that leaves of deformation, elastic block 11 reset, make pulley post 44 drive pulley 8 upwards reset, treat that the protruding top of moving pulley 8 once more of deformation, repeated extrusion process. In order to facilitate the movement and installation of the pulley column 44, a sliding hole is formed in the middle of the support 9, the pulley column 44 is installed in the sliding hole through the sliding block 10, and the elastic block 11 is installed in the sliding hole and located below the sliding block 10.

In this embodiment, a rough-surfaced diffuse reflection table 21 is disposed at the left end of the bottom inside the second elastic bag 22, and a fixing ring 20 is disposed between the diffuse reflection table 21 and the second elastic bag 22, so as to facilitate the installation of the diffuse reflection table 21 and ensure the reliable sealing of the second elastic bag 22. The infrared laser emitter 19 is mounted on a diffuse reflection table 21, and a first coating layer absorbing infrared rays is provided on the surface of the diffuse reflection table 21. The diffuse reflection pad 32 with the rough surface is arranged at the right end of the inner wall of the second elastic bag 22, the upper end of the diffuse reflection pad 32 is positioned above the middle of the infrared imager 31, the lower end of the diffuse reflection pad 32 is connected with the infrared imager 31, and the surface of the diffuse reflection pad 32 is provided with a second coating for absorbing infrared rays, so that infrared rays irradiated on the diffuse reflection pad 32 can be prevented from being reflected to the infrared imager 31.

In this embodiment, an elastic pad 14 connecting all the first chambers 4 is disposed above the upper side wall of the first chamber 4 to increase the supporting strength of the pulley mechanism 5. The first chamber 4 is provided at both left and right side walls thereof with stopper stages 23 to prevent the first rotation plate 16 from being turned upward.

In this embodiment, one-way channel 6 includes liquid inlet pipe 61, liquid outlet pipe 62, liquid distribution manifold 63, and liquid distribution pipes 64. The liquid inlet pipe 61 is communicated with the second elastic bag 22 and the elastic cavity 7, the liquid distributing pipes 64 are communicated with the liquid distributing main pipe 63 after being communicated with one first elastic bag 15 respectively, and the liquid outlet pipe 62 is communicated with the elastic cavity 7 and the liquid distributing main pipe 63. Liquid inlet pipe 61 is provided with first check valve 28 for preventing liquid in elastic chamber 7 from flowing into second elastic bag 22, and liquid outlet pipe 62 is provided with second check valve 30 for preventing liquid in first elastic bag 15 from flowing into second chamber 25.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.