A conveying device for article information acquisition

By integrating barcode scanning and weighing functions into the conveying equipment, the problem of insufficient information collection at the front end of the destruction center has been solved, realizing flexible media conveying and efficient information management, and is suitable for various media in the destruction center.

CN224492420UActive Publication Date: 2026-07-14BEIJING HESHENGDA INFORMATION SECURITY TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING HESHENGDA INFORMATION SECURITY TECH
Filing Date
2025-07-31
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The lack of information collection equipment at the front end of the destruction center results in low efficiency in the registration and management of information on media to be destroyed, and it cannot meet the flexible transportation needs of various media.

Method used

Design a conveying device for collecting information on items, integrating barcode scanning and weighing functions, with bidirectional conveying capability, and flexibly installable according to the layout of the destruction center. It includes beam assembly, column assembly, belt assembly, baffle assembly and base assembly, and is equipped with RFID reader, weighing sensor, industrial control all-in-one computer, etc., to realize data uploading to the information management system.

Benefits of technology

It improves the efficiency of information registration for media awaiting disposal, realizes closed-loop management of media, reduces human error, is suitable for flexible transportation of various media, and meets the diverse media needs of destruction centers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of destruction center's to be destroyed medium flow transfer conveying technology, concretely is a kind of conveying equipment for article information collection, including crossbeam assembly A, stand component one D, stand component two E, belt assembly B, baffle component one F, baffle component two G and base assembly C, belt assembly B is horizontally arranged on base assembly C, the conveying equipment for article information collection has the function of scanning code, weighing, can to be destroyed material is weighed, information registration and can be uploaded to the informatization management system by network interface with the data collected, overall structure is compact, with the function of bidirectional conveying, can according to the layout of destruction center selection flexible installation mode;Its conveying capacity can satisfy the conveying demand of the most to be destroyed medium of destruction center, can be used for the conveying of bag, box, equipment monomer.
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Description

Technical Field

[0001] This utility model relates to the field of conveying and transferring media awaiting sale in a destruction center, specifically a conveying device for collecting information on items. Background Technology

[0002] The conveying equipment for collecting item information is used to collect information on packages of media awaiting sale after unloading at the front end of the destruction center and then transmit them to the sorting and conveying system at the back end. Typically, after unloading the media awaiting sale at the front end of the destruction center, it is directly conveyed to the sorting and conveying system at the back end. The front end of the destruction center does not have a dedicated conveying equipment for collecting information on the media awaiting sale. Therefore, this design incorporates barcode scanning and weighing functions, enabling the weighing and information registration of materials awaiting sale. The collected data can be uploaded to an information management system via a network interface. The overall structure is compact, with bidirectional conveying capabilities, and flexible installation methods can be selected based on the layout of the destruction center. Its conveying capacity can meet the conveying needs of most media awaiting sale in the destruction center and can be used for conveying bags, boxes, and individual equipment units. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a conveying device for collecting information on goods. It has barcode scanning and weighing functions, can weigh and register information on materials to be sold, and can upload the collected data to an information management system via a network interface. The overall structure is compact and has bidirectional conveying capabilities. It can be flexibly installed according to the layout of the destruction center. Its conveying capacity can meet the conveying needs of most media to be sold in the destruction center and can be used for conveying bags, boxes, and individual equipment units.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a conveying device for collecting item information, comprising a crossbeam assembly, a first column assembly, a second column assembly, a belt assembly, a first baffle assembly, a second baffle assembly, and a base assembly. The belt assembly is horizontally mounted on the base assembly. The first baffle assembly and the second baffle assembly are respectively fixed on both sides of the belt assembly. The first column assembly and the second column assembly are respectively fixedly mounted above the first baffle assembly and the second baffle assembly. The crossbeam assembly is positioned above the first column assembly and the second column assembly.

[0007] The base assembly is equipped with a weighing sensor assembly, an RFID reader, and a weighing sensor junction box that are compatible with the belt assembly.

[0008] The crossbeam assembly is locked to column assembly one and column assembly two. The crossbeam assembly includes a crossbeam with an RFID antenna, a code reading kit, a light source and a tri-color lamp installed inside.

[0009] The column assembly includes a column with a built-in antenna.

[0010] The second column assembly includes an industrial control all-in-one computer, buttons, a buzzer, a rotary switch, and an emergency stop switch. Furthermore, the industrial control all-in-one computer is equipped with equipment control software, which can control the operation of the equipment and process the collected information, and can transmit the collected information to the information management system via a network cable.

[0011] The second baffle assembly includes a photoelectric sensor, and the first baffle assembly includes a reflector that can reflect the light emitted by the photoelectric sensor back.

[0012] Preferably, the outer side of the crossbeam is equipped with a crossbeam cover, a crossbeam plate, and a lifting column, the lifting column being used to adjust the height of the crossbeam to change the height of the camera and the belt surface.

[0013] Preferably, the code reading kit includes a top antenna bracket, a second antenna bracket, a first camera bracket, a camera connection board, and a camera.

[0014] Preferably, the belt assembly includes a vertical plate, a support plate, a non-powered roller, an electric roller, a driven roller, a tensioning plate, and a belt. The vertical plate and the support plate are connected together by bolts. The electric roller and the driven roller are respectively installed at both ends of the vertical plate. The electric roller transmits power to the belt, thereby driving the belt to transport the paper package to the downstream equipment. A non-powered roller is installed in the middle of the support plate, which provides support for the belt. Tensioning plates are installed at both ends of the electric roller and the driven roller. The tensioning plates are pushed by bolts to push the electric roller and the driven roller to tension the belt.

[0015] Preferably, the weighing sensor assembly includes a support shaft, a weighing sensor, and a sensor pad. The weighing sensors are configured in four groups, on which belt assemblies are supported and mounted.

[0016] Preferably, the base assembly further includes a base frame, a mounting liner, adjustable legs, a door frame, a left door panel, a right door panel, panel A, panel B, a base guard plate, and fixing corner pieces; the adjustable legs are used to adjust the height of the belt surface, and the adjustable legs also include feet; the mounting liner is equipped with an electrical panel, which centrally arranges the electrical control components of the equipment.

[0017] Preferably, the column assembly one further includes a decorative panel, locking seat A, locking seat B, locking seat cover, acrylic cover plate, antenna bracket one, antenna bracket three, and arc hinge one.

[0018] The decorative panel is connected to the first column via an arc hinge, and is fixed to the first column with screws after closing; the top of the first column is equipped with a locking seat, which is used to lock the adjustable lifting column.

[0019] Preferably, the second column assembly includes a second column, a mounting panel, a reinforcing plate, a second locking seat A, a second locking seat B, a second locking seat cover, a column cover plate, a second arc-shaped hinge, and an electrical knob; the mounting panel of the column is connected to the column via the arc-shaped hinge, and is fixed to the column with screws after being closed; a reinforcing plate is installed behind the mounting panel to strengthen the panel and prevent it from deforming under stress, and a locking seat is installed on the top of the column to lock the lifting column with the adjusted height.

[0020] Preferably, both baffle assembly one and baffle assembly two further include a baffle and a sensor bracket installed on the inner side of the baffle, the reflector and the photoelectric sensor are respectively installed on the sensor bracket on their respective sides, and protective covers are installed on both ends of the outer side of the baffle.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, this utility model provides a conveying device for collecting information about items, which has the following beneficial effects:

[0023] This conveying equipment for collecting item information features a compact overall structure and bidirectional conveying capabilities. Its flexible installation method can be selected based on the layout of the destruction center. Its conveying capacity can meet the conveying needs of most media awaiting sale in the destruction center, and it can be used for conveying bags, boxes, and individual equipment units. In addition, the equipment has barcode scanning and weighing functions, allowing for the weighing and information registration of materials awaiting sale, and the uploading of collected data to the information management system via a network interface. It is primarily used in the registration and counting of paper media awaiting sale at the front end of the paper media destruction line in the destruction center, and is also suitable for the registration and counting of other types of media awaiting sale (such as CDs, hard drives, semiconductors, etc.) before destruction. Weighing and registering packages of media awaiting sale, combined with the weight comparison of the remaining materials after destruction, allows for closed-loop management of whether the media has been completely destroyed, reducing the loss of confidential documents. Since the packages of media awaiting sale contain information about the sending unit, this equipment collects and uploads this information to the destruction center's management system, enabling unmanned information management of media awaiting sale, improving registration efficiency, and avoiding errors that may occur due to human operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a structural schematic diagram of the crossbeam assembly A of this utility model;

[0026] Figure 3This is a schematic diagram of the belt assembly of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the base assembly of this utility model;

[0028] Figure 5 This is a structural schematic diagram of the column assembly of this utility model;

[0029] Figure 6 This is a structural schematic diagram of the second column assembly of this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the baffle assembly of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the second baffle assembly of this utility model.

[0032] In the attached diagram, the following are labeled: A, crossbeam assembly; A1, crossbeam; A2, RFID antenna (D2); A3, light source; A4, tri-color light; A5, crossbeam cover; A6, crossbeam plate; A7, lifting column; A8, antenna bracket; A9, antenna bracket two; A10, camera bracket one; A11, camera connection plate; A12, camera;

[0033] B. Belt assembly; B1. Vertical plate; B2. Support plate; B3. Non-powered roller; B4. Electric roller; B5. Driven roller; B6. Tensioner plate; B7. Belt;

[0034] C. Base assembly; C1. Base frame; C2. Mounting liner; C3. Adjustable support leg; C4. Door frame; C5. Left door panel; C6. Right door panel; C7. Panel A; C8. Panel B; C9. Base guard plate; C10. Fixing corner bracket; C11. Foot; C12. RFID reader / writer; C13. Weighing sensor junction box; C14. Weighing sensor assembly; C141. Support shaft; C142. Weighing sensor; C143. Sensor pad;

[0035] D. Column assembly 1; D1. Column 1; D2. Antenna; D3. Decorative panel; D4. Locking seat A; D5. Locking seat B; D6. Locking seat cover 1; D7. Antenna bracket 1; D8. Antenna bracket 3; D9. Arc hinge 1;

[0036] E. Column assembly two; E1. Column two; E2. Mounting panel; E3. Reinforcing plate; E4. Locking seat A two; E5. Locking seat B two; E6. Locking seat cover two; E7. Column cover plate; E8. Arc hinge two; E9. Industrial control all-in-one computer; E10. Button; E11. Buzzer; E12. Rotary switch; E13. Emergency stop switch;

[0037] F. Baffle assembly one; F1. Reflector;

[0038] G. Baffle assembly two; G1. Photoelectric sensor;

[0039] FG1, baffle; FG2, sensor bracket. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Example:

[0042] Please see Figure 1-8 A conveying device for collecting information about items includes a crossbeam assembly A, a first column assembly D, a second column assembly E, a belt assembly B, a first baffle assembly F, a second baffle assembly G, and a base assembly C. The belt assembly B is horizontally mounted on the base assembly C. The first baffle assembly F and the second baffle assembly G are respectively fixed on both sides of the belt assembly B. The first column assembly D and the second column assembly E are respectively fixedly mounted above the first baffle assembly F and the second baffle assembly G. The crossbeam assembly A is positioned above the first column assembly D and the second column assembly E.

[0043] The base assembly C is equipped with a weighing sensor assembly C14, an RFID reader / writer C12, and a weighing sensor junction box C13 that are adapted to the belt assembly B.

[0044] The crossbeam assembly A is locked to the column assembly one D and the column assembly two E. The crossbeam assembly A includes a crossbeam A1 with an internally installed RFID antenna A2, a barcode reader kit, a light source A3, and a tri-color light A4. The RFID antenna A2 is used to identify electronic tags on the surface of the package when they are horizontal, and transmits the collected information to the industrial control computer E9 via a reader / writer. The barcode reader kit can take pictures of the package and transmit the captured image information directly to the industrial control computer E9. The information processing software deployed on the industrial control computer E9 identifies the QR code information in the image. The tri-color light A4 is used to indicate the working status of the equipment: green for normal operation, yellow for fault operation, and red for belt B7 when stopped.

[0045] The column assembly D includes a column D1 with a built-in antenna D2; it is used to identify RFID tags on the package surface when they are in a vertical position, and transmits the collected package information to the industrial control all-in-one computer E9 via the RFID reader / writer C12.

[0046] The column assembly 2E includes an industrial control all-in-one computer E9, a button E10, a buzzer E11, a rotary switch E12, and an emergency stop switch E13. The industrial control all-in-one computer E9 is equipped with equipment control software, which can control the operation of the equipment and process the collected information, and can transmit the collected information to the information management system via a network cable.

[0047] The second baffle assembly G includes a photoelectric sensor G1, and the first baffle assembly F includes a reflector F1 that can reflect the light emitted by the photoelectric sensor G1 back.

[0048] It has the following functions:

[0049] Conveying function: The main structure of the equipment is a belt conveyor, which is used to meet the application of conveying media to be sold in the destruction line and can meet the material conveying needs of different forms; the belt has a bidirectional conveying function and can flexibly adapt to the equipment layout of the destruction center.

[0050] Scan and photograph: The device is equipped with an intelligent code reading kit, which integrates image acquisition, data processing and result output functions. It has a high degree of timeliness in image data transmission and processing, and has a built-in deep learning code reading algorithm, which can effectively read one-dimensional and two-dimensional codes of various code types.

[0051] RFID Reading: The equipment is equipped with an RFID reader to meet the requirements for RFID tag data on the surface of the medium to be sold; to adapt to different orientations of RFID tags, RFID antennas are also configured on the top and sides of the equipment to improve tag recognition efficiency.

[0052] Weighing of media to be sold: The equipment is equipped with a weighing sensor to meet the needs of weighing and statistics of media to be sold before they are destroyed.

[0053] Information collection and management: The equipment is equipped with an industrial control all-in-one computer, which is equipped with data processing software. It can process the data collected by the code reading kit, RFID reader and weighing sensor, and upload the processed information to the information management system through the network interface.

[0054] Specifically, the outer side of the crossbeam A1 is equipped with a crossbeam cover A5, a crossbeam cover plate A6, and a lifting column A7. The lifting column A7 is used to adjust the height of the crossbeam A1, thereby changing the height of the camera A12 and the belt B7 surface, so that it can obtain a larger field of view for taking pictures.

[0055] The code reading kit includes a top antenna bracket A8, a second antenna bracket A9, a first camera bracket A10, a camera connection plate A11, and a camera A12. Two sets of RFID antennas and their brackets are provided.

[0056] Specifically, the belt assembly B includes a vertical plate B1, a support plate B2, a non-powered roller B3, an electric roller B4, a driven roller B5, a tensioning plate B6, and a belt B7. The vertical plate B1 and the support plate B2 are bolted together, forming the mounting base for the other components. The electric roller B4 and the driven roller B5 are respectively installed at both ends of the vertical plate B1. The electric roller B4 transmits power to the belt B7, thereby driving the belt B7 to transport the paper package to the downstream equipment. The non-powered roller B3 is installed in the middle of the support plate B2, providing support for the belt B7. The roller reduces the resistance of the belt B7 in transporting the paper package and improves the load-bearing capacity of the belt B7. The tensioning plate B6 is installed at both ends of the electric roller B4 and the driven roller B5. The tensioning plate B6 is supported by bolts, thereby pushing the electric roller B4 and the driven roller B5 to tension the belt B7, thus providing sufficient tension for the effective transport of packages by the belt B7. Furthermore, the column assembly D is fixed to the vertical plate B1 by bolts.

[0057] Specifically, the weighing sensor assembly C14 includes a support shaft C141, a weighing sensor C142, and a sensor pad C143. The weighing sensor C142 is configured in four groups, on which a belt assembly B is supported and installed. After the weighing sensor C142 collects the weight of the package, it transmits the information to the industrial control all-in-one computer E9 through a transmitter.

[0058] Specifically, the base assembly C also includes a base frame C1, a mounting liner C2, adjustable legs C3, a door frame C4, a left door panel C5, a right door panel C6, a panel AC7, a panel BC8, a base guard plate C9, and a fixing corner piece C10; the adjustable legs C3 are used to adjust the height of the belt B7 surface, and the adjustable legs C3 also include feet C11; the mounting liner C2 is equipped with an electrical panel, which centrally arranges the electrical control components of the equipment.

[0059] Specifically, the column assembly D also includes a decorative panel D3, locking seats A-D4, locking seats B-D5, locking seat cover D6, acrylic cover plate, antenna bracket D7, antenna bracket D8, and arc hinge D9.

[0060] Decorative panel D3 is connected to column D1 via an arc hinge and is fixed to column D1 with screws after being closed. When needed, decorative panel D3 can be opened to inspect antenna D2 inside column D1. A locking seat is installed on the top of column D1, which is used to lock the height-adjustable lifting column A7.

[0061] Specifically, the column assembly E2 includes column E1, mounting panel E2, reinforcing plate E3, locking seat A2 E4, locking seat B2 E5, locking seat cover E6, column cover plate E7, arc hinge E8, and electrical knob. The mounting panel E2 is connected to the column via the arc hinge and is fixed to the column with screws after closing. It can be opened when needed to inspect the electrical components inside the column. The reinforcing plate E3 is installed behind the mounting panel E2 to strengthen the panel and prevent it from deforming under stress. The top of the column is equipped with a locking seat, which is used to lock the height-adjustable lifting column A7.

[0062] Specifically, both baffle assembly 1F and baffle assembly 2G include a baffle FG1 and a sensor bracket FG2 installed inside the baffle FG1. A reflector F1 and a photoelectric sensor G1 are respectively mounted on their respective sensor brackets FG2. Protective covers are installed at both ends of the outer side of the baffle FG1. Baffle assembly 1F and baffle assembly 2G are respectively mounted on their respective belt assemblies B, ensuring effective delivery of packages to the sorting equipment and providing a mounting foundation for column assembly 1D and column assembly 2E.

[0063] Working process: Packages of media to be sold (usually paper packages) are transported by unloading conveyor belt and differential speed conveyor belt to the barcode scanning and weighing conveyor belt. The barcode scanning conveyor belt is equipped with a position detection sensor. After the package is in place, the belt stops conveying. At this time, the control system weighs the paper package, takes a picture and reads the barcode at the same time, and saves the information collected by the package locally. Alternatively, the collected information can be uploaded to the information management system.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A conveying device for collecting information about items, characterized in that: The assembly includes a crossbeam assembly (A), a first column assembly (D), a second column assembly (E), a belt assembly (B), a first baffle assembly (F), a second baffle assembly (G), and a base assembly (C). The belt assembly (B) is horizontally mounted on the base assembly (C). The first baffle assembly (F) and the second baffle assembly (G) are respectively fixed on both sides of the belt assembly (B). The first column assembly (D) and the second column assembly (E) are respectively fixedly mounted above the first baffle assembly (F) and the second baffle assembly (G). The crossbeam assembly (A) is positioned above the first column assembly (D) and the second column assembly (E). The base assembly (C) is provided with a weighing sensor assembly (C14), an RFID reader (C12), and a weighing sensor junction box (C13) that are adapted to the belt assembly (B); The crossbeam assembly (A) is locked to column assembly one (D) and column assembly two (E). The crossbeam assembly (A) includes a crossbeam (A1) with an RFID antenna (A2), a code reading kit, a light source (A3) and a tri-color light (A4) installed inside. The column assembly one (D) includes a column one (D1) with an antenna (D2) built in; The column assembly two (E) includes an industrial control all-in-one computer (E9), a button (E10), a buzzer (E11), a rotary switch (E12), and an emergency stop switch (E13); The second baffle assembly (G) includes a photoelectric sensor (G1), and the first baffle assembly (F) includes a reflector (F1) that can reflect the light emitted by the photoelectric sensor (G1) back.

2. The conveying device for collecting item information according to claim 1, characterized in that: The outer side of the crossbeam (A1) is equipped with a crossbeam cover (A5), a crossbeam cover plate (A6), and a lifting column (A7). The lifting column (A7) is used to adjust the height of the crossbeam (A1) to change the height of the camera (A12) and the belt (B7) surface.

3. The conveying device for collecting item information according to claim 2, characterized in that: The code reading kit includes a top antenna bracket (A8), a second antenna bracket (A9), a first camera bracket (A10), a camera connection plate (A11), and a camera (A12).

4. The conveying device for collecting item information according to claim 3, characterized in that: The belt assembly (B) includes a vertical plate (B1), a support plate (B2), a non-powered roller (B3), an electric roller (B4), a driven roller (B5), a tensioning plate (B6), and a belt (B7). The vertical plate (B1) and the support plate (B2) are connected together by bolts. The electric roller (B4) and the driven roller (B5) are respectively installed at both ends of the vertical plate (B1). The electric roller (B4) transmits power to the belt (B7), thereby driving the belt (B7) to transport the paper package to the downstream equipment. The non-powered roller (B3) is installed in the middle of the support plate (B2), and the non-powered roller (B3) provides support for the belt (B7). The tensioning plate (B6) is installed at both ends of the electric roller (B4) and the driven roller (B5). The electric roller (B4) and the driven roller (B5) are pushed by bolts to support the tensioning plate (B6), thereby pushing the electric roller (B4) and the driven roller (B5) to tension the belt (B7).

5. The conveying device for collecting article information according to claim 4, characterized in that: The weighing sensor assembly (C14) includes a support shaft (C141), a weighing sensor (C142), and a sensor pad (C143). The weighing sensor (C142) is configured in four groups, on which a belt assembly (B) is supported and mounted.

6. The conveying device for collecting item information according to claim 5, characterized in that: The base assembly (C) also includes a base frame (C1), a mounting plate (C2), adjustable legs (C3), a door frame (C4), a left door panel (C5), a right door panel (C6), panel A (C7), panel B (C8), a base guard plate (C9), and a fixing corner piece (C10); the adjustable legs (C3) are used to adjust the height of the belt (B7) surface.

7. The conveying device for collecting item information according to claim 6, characterized in that: The column assembly one (D) also includes a decorative panel (D3), locking seat A (D4), locking seat B (D5), locking seat cover one (D6), acrylic cover plate, antenna bracket one (D7), antenna bracket three (D8), and arc hinge one (D9); The decorative panel (D3) is connected to the column one (D1) via an arc hinge and is fixed to the column one (D1) with screws after being closed; the top of the column one (D1) is equipped with a locking seat, which is used to lock the height-adjusted lifting column (A7) in place.

8. The conveying device for collecting article information according to claim 7, characterized in that: The column assembly two (E) includes column two (E1), mounting panel (E2), reinforcing plate (E3), locking seat A two (E4), locking seat B two (E5), locking seat cover two (E6), column cover plate (E7), arc hinge two (E8), and electrical knob; the mounting panel (E2) of the column is connected to the column through the arc hinge, and is fixed to the column with screws after closing; a reinforcing plate (E3) is installed behind the mounting panel (E2) to strengthen the panel and prevent it from deforming under force, and a locking seat is installed on the top of the column, which is used to lock the adjustable lifting column (A7) tightly.

9. The conveying device for collecting article information according to claim 8, characterized in that: Both baffle assembly one (F) and baffle assembly two (G) include a baffle (FG1) and a sensor bracket (FG2) installed inside the baffle (FG1). The reflector (F1) and the photoelectric sensor (G1) are respectively installed on the sensor bracket (FG2) on their respective sides. Protective covers are installed at both ends of the outer side of the baffle (FG1).