Screen body suspension inspection device and high square flat screen

Abstract

The application provides a screening body suspension inspection device and a high square flat screen, which comprises two inspection sensor assemblies and two detection plates; the two inspection sensor assemblies are respectively arranged above the lateral two side edges of the screening body with the sensing ends downward, and the inspection sensor assemblies are connected with the feed cloth bag mounting plate fixed above the screening body; the two detection plates are respectively fixed on the top wall of the screening body and are respectively located directly below the two inspection sensor assemblies, and a safety detection distance is formed between the detection plate and the sensing end of the inspection sensor assembly; wherein the two inspection sensor assemblies are respectively connected with the detection plate below each of them, and when the two detection plates make a horizontal swing rotary motion with the screening body, the sensing ends of the two inspection sensor assemblies respectively make a reciprocating motion along the longitudinal direction of the screening body under the driving of the detection plates. The screening body suspension inspection device and the high square flat screen provided by the application can avoid the detection missing report phenomenon and improve the reliability of the screening body sliding detection.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of high square screen, and particularly relates to a screen body suspension inspection device and a high square flat screen. BACKGROUND

[0002] The high square flat screen is rotated by self-balancing through an internal motor, so as to drive the balanced iron, i.e. eccentric rotor, to make the screen body suspended at four corners to perform a horizontal swing rotary motion. Since the high square flat screen has a large volume and heavy equipment, if the connection between the screen body and one or more hangers falls off during operation, a serious safety accident is likely to occur, and therefore the connection reliability between the screen body and each hanger needs to be controlled at all times.

[0003] At present, in order to avoid the safety hidden danger caused by the continuous operation of the machine after the screen body suspension loosens due to the untimely artificial inspection, a distance measuring sensor is usually installed in the middle of the screen body to perform detection, the distance measuring sensor detects the distance between the sensing end and the top wall of the screen body in real time, when the suspended screen body slides downward, the detection distance increases and the signal is fed back to the controller, and the controller issues an alarm to remind the operator in time. The disadvantage of this detection method is that the screen body performs a horizontal swing rotary motion during operation, and there is a certain Z-direction vibration during the start and stop stages, and the detection sensitivity of the distance measuring sensor is too high, which is prone to false reporting, and therefore the detection sensitivity of the distance measuring sensor needs to be relaxed. However, since the screen body is suspended at four corners, when the screen body and one of the hangers are loose, the screen body only tilts slightly, and at this time the sinking amount of the center of the screen body is small, which causes the detection distance of the distance measuring sensor to still be within the normal range, thereby causing the missing report problem of the screen body falling phenomenon. Since only the large degree of screen body falling can be reliably detected, the early warning effect of the screen body falling is poor, and there is still a safety hidden danger. SUMMARY

[0004] The embodiment of the present application provides a screen body suspension inspection device and a high square flat screen, which aims to improve the accuracy and reliability of screen body falling detection and avoid missing reports.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: in the first aspect, a screen body suspension inspection device is provided, which comprises:

[0006] Two inspection sensor assemblies are arranged above the lateral two side edges of the screen body with the sensing end downward, and the inspection sensor assemblies are connected with the feed cloth bag mounting plate fixed above the screen body;

[0007] Two detection plates are fixed on the top wall of the screen body and located directly below the two groups of inspection sensor assemblies, and a safety detection distance is formed between the detection plates and the sensing end of the inspection sensor assembly;

[0008] The two groups of inspection sensor assemblies are connected with the detection plates below them respectively. When the two detection plates rotate with the screen body, the sensing ends of the two groups of inspection sensor assemblies reciprocate along the longitudinal direction of the screen body under the driving of the detection plates.

[0009] In combination with the first aspect, in a possible implementation manner, the inspection sensor assembly comprises:

[0010] The connecting frame is connected with the feed cloth mounting plates on the two longitudinal sides of the screen body above the screen body;

[0011] The sliding block is slidingly connected to the connecting frame along the longitudinal direction of the screen body and is connected with the detection plate;

[0012] The distance measuring sensor is arranged on the sliding block and has a downward sensing end, and is used for detecting a safety detection distance;

[0013] The direction in which the distance measuring sensor moves under the driving of the detection plate is opposite to the longitudinal swinging direction of the screen body.

[0014] In some embodiments, the connecting frame comprises:

[0015] The two fixed seats are fixedly connected with one of the feed cloth mounting plates respectively;

[0016] The two sliding rods are distributed in the transverse direction of the screen body and are slidingly arranged in the sliding block along the longitudinal direction of the screen body, and the two ends of each sliding rod are connected with one of the fixed seats respectively.

[0017] For example, the connecting frame further comprises two groups of guide wheels, and the two groups of guide wheels are connected with the two fixed seats respectively; the two ends of the detection plate are connected with one group of traction ropes respectively, and the two groups of traction ropes pass through the respective adjacent guide wheels and are connected with the sliding block.

[0018] For example, the lengths of the two groups of traction ropes are equal, and the two groups of traction ropes are elastic ropes.

[0019] In combination with the first aspect, in a possible implementation manner, the connecting frame further comprises two screw rods, the two screw rods are located on the two transverse sides of the sliding block respectively, and the two ends of each screw rod are rotationally connected with one of the fixed seats; one rotating driving member is arranged on each of the two fixed seats, and the output ends of the two rotating driving members are connected with one of the screw rods respectively; two thrust blocks are slidingly connected on the two sliding rods, and the two thrust blocks are located on the two longitudinal sides of the sliding block and are screw-connected with one of the screw rods respectively.

[0020] In some embodiments, the first permanent magnet is arranged on each of the two thrust blocks, and the second permanent magnet is arranged on the sliding block, and the first permanent magnet and the second permanent magnet repel each other.

[0021] Exemplarily, two telescopic supporting seats are arranged at the bottom of the detection plate and spaced apart along the longitudinal direction of the screen body, both of the telescopic supporting seats are connected with the top wall of the screen body, and a telescopic driving member is arranged between the two telescopic supporting seats, the telescopic driving member is fixed on the top wall of the screen body and the telescopic output end is connected with the detection plate.

[0022] For example, the screen body suspension inspection device further comprises a controller and an audible and visual alarm, the controller is electrically connected with the driving mechanism of the screen body, the two inspection sensor assemblies and the audible and visual alarm respectively.

[0023] The screen body suspension inspection device has the advantages that: compared with the prior art, the two inspection sensor assemblies are arranged above the upper region of the two lateral edges of the screen body to detect the distance between the sensing end and the detection plate, the two detection plates drive the two inspection sensor assemblies to move reciprocally along the longitudinal direction of the screen body through the rolling movement of the screen body, so that each inspection sensor assembly can detect the vertical distance between the sensing end and the two ends of the detection plate, the sliding problem of the screen body at any suspension position can be detected in time, the false negative phenomenon of the screen body sliding is avoided, and the detection accuracy and reliability are improved.

[0024] In the second aspect, the embodiment of the present application further provides a high square flat screen comprising the screen body suspension inspection device.

[0025] The high square flat screen has the advantages that: compared with the prior art, the high square flat screen adopts the screen body suspension inspection device, the sensing end of the inspection sensor assembly arranged on the two lateral sides of the screen body is driven to move reciprocally along the longitudinal direction of the screen body through the movement of the two detection plates, so that the suspension reliability detection between the four corners of the screen body and the suspender is realized, the false negative phenomenon is avoided, and the reliability of the screen body sliding detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A perspective structural schematic view of the high square flat screen is provided for the embodiment of the present application.

[0027] Figure 2 A perspective structural schematic view of the screen body suspension inspection device is provided for the embodiment of the present application.

[0028] Figure 3 A front view structural schematic view of the screen body suspension inspection device is provided for the embodiment of the present application.

[0029] In the figure: 10, a patrol sensor assembly; 11, a connecting frame; 111, a fixing seat; 112, a sliding rod; 113, a guide wheel; 114, a screw rod; 115, a rotary driving piece; 116, a thrust block; 1161, a first permanent magnet; 12, a sliding block; 121, a second permanent magnet; 13, a distance measuring sensor; 20, a detection plate; 21, a telescopic support seat; 22, a telescopic driving piece; 30, a traction rope; 40, an audible and visual alarm; 50, a screen body; 60, a feed cloth bag mounting plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination 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.

[0031] It should be noted that when an element is referred to as being "disposed on", "connected to" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or several features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0032] Please refer to Figures 1 to 3 , now the screen body suspension patrol device provided by the present application will be described. The screen body suspension patrol device comprises two patrol sensor assemblies 10 and two detection plates 20; the two patrol sensor assemblies 10 are respectively arranged above the lateral two side edges of the screen body 50 with the sensing ends downward, and the patrol sensor assembly 10 is connected with the feed cloth bag mounting plate 60 fixed above the screen body 50; the two detection plates 20 are respectively fixed to the top wall of the screen body 50 and respectively located directly below the two groups of patrol sensor assemblies 10, and a safety detection distance is formed between the detection plate 20 and the sensing end of the patrol sensor assembly 10; wherein the two groups of patrol sensor assemblies 10 are respectively connected with the detection plate 20 below each group, and when the two detection plates 20 make a horizontal swing rotary motion with the screen body 50, the sensing ends of the two groups of patrol sensor assemblies 10 are driven by the detection plate 20 to move reciprocally along the longitudinal direction of the screen body 50.

[0033] It should be noted that the screen body of the high square flat screen is usually suspended by four groups of glass steel hangers, the driving mechanism (usually a motor driving an eccentric mass block to rotate) is arranged in the middle region of the screen body, and a row of screen cavities is arranged on both sides of the driving mechanism. A feed cloth bag mounting plate 60 is arranged above the two rows of screen cavities, the feed cloth bag mounting plate 60 is connected with the feed port of each screen cavity through a cloth bag, so that the feed cloth bag mounting plate 60 can feed the screen body 50 in the flat swing rotary motion in a fixed state. In the embodiment, the two feed cloth bag mounting plates 60 extend horizontally and are spaced longitudinally, the inspection sensor assembly 10 is fixedly connected with at least one feed cloth bag mounting plate 60, and the detection plate 20 should extend longitudinally to ensure that the sensing end of the inspection sensor assembly 10 can always sense the presence of the detection plate 20 during the longitudinal reciprocating motion of the screen body.

[0034] It should be noted that in the embodiment, during the flat swing rotary motion of the screen body 50, the sensing end of the inspection sensor assembly 10 can not only detect the safety detection distance of the longitudinal middle position of the screen body, but also detect the safety detection distance close to the suspension position of the screen body. At the same time, it can also be judged whether the operation of the screen body 50 is stable based on the change of the detection value of the safety detection distance during the operation of the screen body 50. Taking one cycle of reciprocating motion of the sensing end of the inspection sensor assembly 10 as an example, when the change of the detection value of the safety detection distance in one cycle does not exceed the set range, it can be determined that the screen body 50 is running stably and there is no slipping problem between the hanger and the screen body 50. When the detection value of the safety detection distance in at least one cycle appears to be locally out of the set range, it can be judged that the hanger close to the out-of-tolerance position slips with the screen body 50. If the detection value of the safety detection distance in the whole cycle exceeds the set range, it is judged that the two hangers on the side of the inspection sensor assembly 10 slip with the screen body 50.

[0035] In the embodiment, through the reciprocating motion of the sensing end of the inspection sensor assembly 10, the safety detection distance of the end of the detection plate 20 extending longitudinally can be detected, so as to avoid the phenomenon of missed report caused by the small sinking amplitude of the middle region of the screen body 50 after single-angle suspension of the screen body 50, and improve the detection reliability.

[0036] Compared with the prior art, the two inspection sensor assemblies 10 are distributed above the lateral two side edges of the screen body and detect the distance between the sensing end and the detection plate 20, the two detection plates 20 drive the two inspection sensor assemblies 10 to reciprocatingly inspect along the longitudinal direction of the screen body by the horizontal swing rotation of the screen body 50, so that each inspection sensor assembly 10 can detect the vertical distance between the sensing end and the longitudinal two ends of the detection plate 20, and the sliding-off problem of the screen body 50 at any suspension position can be detected in time, the false negative phenomenon of screen body sliding is avoided, the detection accuracy and reliability are improved, and the safety hazard of screen body 50 sliding-off during the operation of the high square flat screen is reduced.

[0037] In some embodiments, referring to Figure 2 The inspection sensor assembly 10 includes a connecting frame 11, a sliding block 12 and a distance measuring sensor 13, the two ends of the connecting frame 11 are connected with the feed cloth bag mounting plates 60 on the upper longitudinal two sides of the screen body 50, the sliding block 12 is slidingly connected to the connecting frame 11 along the longitudinal direction of the screen body 50 and connected with the detection plate 20, and the distance measuring sensor 13 is arranged on the sliding block 12 with the sensing end downward for detecting the safety detection distance, wherein the movement direction of the distance measuring sensor 13 with the sliding block 12 driven by the detection plate 20 is opposite to the longitudinal swing direction of the screen body 50.

[0038] The sliding block 12 is driven to reciprocatingly move along the connecting frame 11 based on the movement of the screen body 50 through the connection of the detection plate 20 and the sliding block 12, without the need to additionally configure a driving member for the sliding block 12, which not only reduces the cost and installation space, but also enables the distance measuring sensor 13 connected to the sliding block 12 to move to a position closer to the end of the detection plate 20, i.e., the longitudinal limit position of the distance measuring sensor 13 is closer to the suspension point of the screen body 50, thereby further improving the accuracy and reliability of the screen body sliding detection.

[0039] As a specific embodiment of the connecting frame 11, please refer to Figure 2 The connecting frame 11 includes two fixed seats 111 and two sliding rods 112, wherein the two fixed seats 111 are fixedly connected with one of the feed cloth bag mounting plates 60, the two sliding rods 112 are spaced apart along the lateral direction of the screen body 50 and slidingly arranged in the sliding block 12 along the longitudinal direction of the screen body 50, and the two ends of each sliding rod 112 are connected with one of the fixed seats 111. In this way, the sliding block 12 is slidingly matched with the two sliding rods 112, which not only improves the connection and movement stability of the sliding block 12, but also ensures the smoothness of the sliding block 12, thereby improving the detection stability.

[0040] In some possible implementation manners, please refer to Figure 2and Figure 3 The connecting frame 11 further comprises two sets of guide wheels 113, each set of guide wheels 113 being connected to the two fixed seats 111; the two ends of the detection plate 20 are respectively connected to a set of traction ropes 30, and the two sets of traction ropes 30 respectively pass through the respective proximal guide wheels 113 and are connected to the sliding block 12.

[0041] The cooperation of the guide wheels 113 and the traction ropes 30 can realize the traction driving of the sliding block 12 by the detection plate 20. Since the traction ropes 30 are reversed at the guide wheels 113, when the detection plate 20 swings with the sieve body 50, if the swing amplitude of the sieve body 50 is located near one side of one of the feed cloth bag mounting plates 60, the sliding block 12 moves to the position near the other feed cloth bag mounting plate 60 under the traction of the detection plate 20, so that the longitudinal movement amplitude of the sliding block 12 reaches twice the maximum swing amplitude of the sieve body 50 in the longitudinal direction, which can improve the patrol range of the distance measuring sensor 13, thereby improving the accuracy and reliability of the sieve body falling detection.

[0042] Specifically, in the embodiment, the lengths of the two sets of traction ropes 30 are equal and are elastic ropes. The equal lengths of the two sets of traction ropes 30 can ensure that the sliding block 12 is in the central position when the sieve body 50 is in the stationary state, and also can ensure that the movement amplitudes of the sliding block 12 on the two longitudinal sides are consistent during the horizontal swing rotation of the sieve body 50, thereby improving the patrol stability. The elastic rope can be an entire rope body with elastic extension performance, or can be a section of steel wire rope and at least a section of elastic rope connected together. The steel wire rope is used to surround the guide wheels 113, so as to avoid the elastic rope from being pulled out of the wheel groove of the guide wheel 113 after being stretched and thinned. On this basis, since the detection plate 20 moves with the sieve body 50, in order to improve the reliability of the sleeve connection between the traction rope 30 and the guide wheel 113, the wheel groove of the guide wheel 113 can adopt a necked structure, i.e., the cross section of the wheel groove is a structure of multiple semicircles to ensure the depth of the wheel groove, so as to avoid the traction rope 30 from sliding out of the wheel groove due to the shaking of the detection plate 20.

[0043] The purpose of using the elastic rope is to use the elastic potential energy to make the sliding block 12 form forced vibration under the driving of the detection plate 20. Since the forced vibration outputs the maximum amplitude when the natural frequency and the circular frequency of the driving force are consistent, when the combination structure of the sliding block 12 and the elastic rope is matched with the rotation speed of the horizontal swing rotation of the sieve body 50, the reciprocating movement distance of the sliding block 12 can be maximized, so that the distance measuring sensor 13 detects a safety detection distance closer to the suspension point of the sieve body 50, thereby improving the accuracy of the sieve body falling detection.

[0044] As a variant embodiment of the connecting frame 11, referring to Figure 2The connecting frame 11 further comprises two screw rods 114, which are respectively located at the two lateral sides of the sliding block 12 and are rotatably connected to the two fixed seats 111 at two ends thereof, and each of the two fixed seats 111 is provided with a rotary driving member 115, and the output ends of the two rotary driving members 115 are respectively connected to one of the two screw rods 114; the two sliding rods 112 are slidably connected with two thrust blocks 116, which are respectively located at the two longitudinal sides of the sliding block 12 and are screw-connected with one of the two screw rods 114.

[0045] The rotary driving member 115 can be an electric motor, which drives the screw rod 114 to rotate and drives the disengaging block to slide along the sliding rod 112, so as to push the sliding block 12 by the thrust block 116 to realize the reciprocating motion. This case is mainly used for the self-checking process of the sliding of the screen body before the start of the high square flat screen. Since the screen body 50 is in a static state before starting, the distance measuring sensor 13 can only detect the safe detection distance in the middle of the detection plate 20. However, if the screen body 50 has a loose or small amplitude sliding of a corner suspension at this time, since the falling amplitude of the middle region of the detection plate 20 is small (at least halved compared with the falling amplitude of the suspension position), the detection value of the distance measuring sensor 13 is still within the normal set range. In this case, the two rotary driving members 115 drive the two screw rods 114 to rotate, respectively, and then drive the two thrust blocks 116 to slide, respectively, and push the sliding block 12 to reciprocate by the two thrust blocks 116, so as to enable the distance measuring sensor 13 to approach the suspension position to detect the safe detection distance, so as to accurately judge whether the screen body slides, improve the detection reliability, and then ensure the operation safety of the high square flat screen.

[0046] After the self-checking is completed in the stopped state, the two thrust blocks 116 can be repositioned away from the sliding block 12, or can be gradually moved away from the sliding block 12 under the driving of the motor after the start of the screen body 50, so as to gradually increase the movement amplitude of the sliding block 12, which helps to improve the stability of the movement of the sliding block 12 under the driving of the detection plate 20. The reciprocating motion of the sliding block 12 during the movement of the screen body 50 is no longer dependent on the driving of the motor, which can reduce the wear of the motor and the screw rod 114 and improve the service life.

[0047] In some embodiments, as shown in FIG. 1, the two sliding rods 112 are arranged on the two lateral sides of the sliding block 12, and the two sliding rods 112 are respectively rotatably connected to the two fixed seats 111. Figure 3As shown, the two thrust blocks 116 are each provided with a first permanent magnet 1161, and the sliding block 12 is provided with a second permanent magnet 121, and the first permanent magnet 1161 and the second permanent magnet 121 repel each other. The magnetic repulsion is formed between the first permanent magnet 1161 and the second permanent magnet 121, which can provide buffer limiting for the movement of the sliding block 12, avoid overloading of the traction rope 30 and affect the service life, and can also use the magnetic repulsion to improve the driving force of the sliding block 12 after reversing at the movement limit position, thereby improving the sliding speed of the sliding block 12 on the slide rod 112, and further improving the movement limit distance of the sliding block 12 on the slide rod 112, that is, improving the reciprocating motion amplitude of the sliding block 12, so that the detection position of the distance measuring sensor 13 is closer to the screen body suspension point, and the accuracy and reliability of the screen body sliding detection are improved.

[0048] In some possible implementation manners, please refer to Figure 3 The bottom of the detection plate 20 is spaced apart and distributed along the longitudinal direction of the screen body 50, and two telescopic support seats 21 are arranged, the two telescopic support seats 21 are connected with the top wall of the screen body 50, and a telescopic driving member 22 is arranged between the two telescopic support seats 21, the telescopic driving member 22 is fixed to the top wall of the screen body 50, and a telescopic output end is connected with the detection plate 20.

[0049] Since there is a certain difference in the height of the top wall of the screen body 50 in the static state and the horizontal swing state, the difference is the key to affecting the setting accuracy range of the distance measuring sensor 13, and here the height of the detection plate 20 is consistent in the static state and the horizontal swing state of the screen body 50 by lifting the detection plate 20 through the telescopic driving member 22, so that the detection accuracy of the distance measuring sensor 13 can be improved, and the accuracy and reliability of the screen body sliding detection are improved.

[0050] It should be understood that the top wall of the screen body 50 is relatively low in the static state because the boom is in a suspended state, and the top wall of the screen body 50 is relatively high in the horizontal swing state because the boom is in an inclined state. Based on this situation, assuming that the height of the detection plate 20 is the initial height when the screen body 50 is static, the distance between the detection plate 20 and the top wall of the screen body 50 can be reduced by pulling down the detection plate 20 through the telescopic driving member 22 when the screen body 50 is in horizontal swing, so that the absolute height of the detection plate 20 is still equal to the initial height, that is, the distance between the detection plate 20 and the sensing end of the distance measuring sensor 13 is the same in the static state and the movement state.

[0051] In order to ensure the connection and lifting movement stability of the detection plate 20, the two ends of the detection plate 20 are connected with the screen body 50 through the telescopic support seats 21, and the telescopic driving member 22 is an electric push rod with controllable telescopic size, so as to meet the demand of adjusting the size between the detection plate 20 and the top wall of the screen body 50 under different horizontal swing amplitudes of the screen body 50, and improve the adaptability.

[0052] It should be noted that in the above embodiments, referring to Figure 1 , the screen suspension inspection device further comprises a controller and an audible and visual alarm 40, and the controller is electrically connected with the driving mechanism of the screen 50, the two inspection sensor assemblies 10 and the audible and visual alarm 40 respectively. The safety detection distance detected by the inspection sensor assembly 10 can be fed back to the controller, and when it is detected that the safety detection distance exceeds the set range, the controller immediately outputs a shutdown instruction to the driving mechanism of the screen 50, and makes the audible and visual alarm 40 issue an alarm to remind the staff to handle, so as to avoid safety accidents caused by screen sliding to the greatest extent and improve production safety.

[0053] Based on the same inventive concept, referring to Figure 1 , the embodiment of the present application also provides a high square flat screen comprising the above screen suspension inspection device.

[0054] Compared with the prior art, the high square flat screen provided by the embodiment can drive the sensing end of the inspection sensor assembly 10 located at the two sides of the screen in the transverse direction of the screen to reciprocate in the longitudinal direction of the screen through the two detection plates 20 moving with the screen 50, so as to realize the suspension reliability detection between the four corners of the screen 50 and the suspender, avoid the missing report phenomenon, and improve the reliability of screen sliding detection.

[0055] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A screen suspension inspection device, characterized by, The application relates to a screen body suspension inspection device. Two inspection sensor assemblies are arranged above the lateral two side edges of the screen body and the sensing ends thereof face downwards, the inspection sensor assemblies are connected with the feed cloth bag mounting plates fixed above the screen body; Two detection plates are fixed on the top wall of the screen body and are located directly below the two groups of inspection sensor assemblies, a safety detection distance is formed between the detection plates and the sensing ends of the inspection sensor assemblies; The two groups of inspection sensor assemblies are connected with the detection plates below the two groups of inspection sensor assemblies, when the two detection plates rotate with the screen body, the sensing ends of the two groups of inspection sensor assemblies reciprocate along the longitudinal direction of the screen body under the driving of the detection plates; The inspection sensor assembly comprises: a connecting frame connected with the feed cloth bag mounting plates on the longitudinal two sides above the screen body; a sliding block connected with the connecting frame and connected with the detection plate; a distance measuring sensor arranged on the sliding block and having a sensing end facing downwards, used for detecting the safety detection distance; The direction in which the distance measuring sensor moves with the sliding block under the driving of the detection plate is opposite to the longitudinal swinging direction of the screen body; The connecting frame comprises: two fixed seats fixedly connected with one of the feed cloth bag mounting plates; two sliding rods distributed in the lateral direction of the screen body and slidingly arranged in the sliding block in the longitudinal direction of the screen body, the two ends of each sliding rod are connected with one of the fixed seats; two groups of guide wheels connected with the two fixed seats; the two ends of the detection plate are connected with a group of traction ropes, the two groups of traction ropes pass through the respective adjacent guide wheels and are connected with the sliding block; the lengths of the two groups of traction ropes are equal and the two groups of traction ropes are elastic ropes; two screw rods located on the lateral two sides of the sliding block and connected with the two fixed seats, a rotating driving member is arranged on each fixed seat, the output ends of the two rotating driving members are connected with one of the screw rods; two thrust blocks are slidingly connected on the two sliding rods, the two thrust blocks are located on the longitudinal two sides of the sliding block and are screw-connected with one of the screw rods; first permanent magnets are arranged on the two thrust blocks, a second permanent magnet is arranged on the sliding block, and the first permanent magnets and the second permanent magnet repel each other.

2. The screen suspension inspection device of claim 1, wherein, Two telescopic supporting seats are arranged on the bottom of the detection plate in the longitudinal direction of the screen body, the two telescopic supporting seats are connected with the top wall of the screen body, and a telescopic driving member is arranged between the two telescopic supporting seats, the telescopic driving member is fixed on the top wall of the screen body and has a telescopic output end connected with the detection plate.

3. The screen suspension inspection device of any one of claims 1-2, wherein, The screen body suspension inspection device further comprises a controller and an audible and visual alarm, the controller is electrically connected with the driving mechanism of the screen body, the two inspection sensor assemblies and the audible and visual alarm.

4. High square flat sieve, characterized in that, The application further discloses a screen body suspension inspection device comprising the device as claimed in any one of claims 1-3.

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