Mounting bracket of safety grating

Abstract

The utility model relates to a mounting bracket for a safety grating, which belongs to the technical field of grating instruments and comprises an upper bracket body and a lower bracket body, the upper bracket body comprises a first upper assembling component detachably connected with a connecting piece to be assembled and a second upper assembling component detachably connected with the top of an optical element, an adjusting part is arranged on the first upper assembling component, and the top of the optical element can slide along the adjusting part through the second upper assembling component; the lower support body is arranged below the upper support body and comprises a first lower assembling assembly and a second lower assembling assembly used for being detachably connected with a connecting piece to be assembled, and the first lower assembling assembly is connected with an assembling connecting piece used for being detachably connected with the bottom of an optical element. And the first lower assembling component is rotationally connected with the second lower assembling component.

Description

TECHNICAL FIELD

[0001] The utility model relates to grating instrument technical field more specifically, relate to a kind of installation support of safety grating. BACKGROUND

[0002] Safety grating, also known as safety light curtain or photoelectric safety protection device, is a critical safety equipment in industrial and mechanical applications. It uses a set of infrared light beams to form a protective grating. When these light beams are blocked, such as a person, tool or other foreign matter entering a dangerous area, the photoelectric protection device will immediately send a signal to control potentially dangerous mechanical equipment to stop working, thereby significantly reducing the risk of injury to workers in the work environment and effectively protecting the personal safety of workers. Safety grating is usually composed of a pair of grating transmitters and receivers. The transmitter is responsible for emitting infrared light beams, while the receiver is responsible for receiving these light beams. Its working principle is based on photoelectric sensing technology. When the light beams are blocked, the receiver cannot receive all or part of the light beams, triggering the safety protection mechanism.

[0003] In the prior art, the transmitting end and receiving end of the safety grating need to be aligned for precise projection of the light from the transmitting end into the corresponding lamp beads of the receiving end. After aligning the safety grating of the transmitting end and receiving end, the safety grating is fixed. At this time, the inclination angle of the safety grating cannot be adjusted according to actual needs to adapt to different application scenarios. If the safety grating malfunctions during use, such as false triggering or failure to respond, and the angle cannot be adjusted for alignment, it may increase the difficulty of troubleshooting, and a more complex repair or replacement process may be required to restore the normal operation of the safety grating. SUMMARY

[0004] The technical problem to be solved by the utility model is that in the prior art, after aligning the transmitting and receiving safety grating, the safety grating is fixed. At this time, the inclination angle of the safety grating cannot be adjusted according to actual needs to adapt to different optical application requirements. If the safety grating malfunctions during use, such as false triggering or failure to respond, and the angle cannot be adjusted, it may increase the difficulty of troubleshooting, and a more complex repair or replacement process may be required to restore the normal operation of the safety grating. To overcome the above defects of the prior art, the utility model provides an installation support for safety grating.

[0005] The utility model solves the technical problems by adopting the following technical solutions:

[0006] The mounting bracket of the safety grating is constructed, comprising an upper bracket body, the upper bracket body comprises a first upper assembly component for detachable connection with a to-be-assembled connecting piece and a second upper assembly component for detachable connection with a top of an optical element, an adjusting part is arranged on the first upper assembly component, the second upper assembly component is in sliding connection with the adjusting part, and the top of the optical element is slidably displaced along the adjusting part through the second upper assembly component.

[0007] A lower bracket body is arranged below the upper bracket body and comprises a first lower assembly component for detachable connection with a bottom of the optical element and a second lower assembly component for detachable connection with the to-be-assembled connecting piece, and the first lower assembly component is in rotary connection with the second lower assembly component.

[0008] Optionally, the first upper assembly component comprises a first end mounting plate and at least one first side mounting plate arranged on the first end mounting plate, and the adjusting part is arranged on a side wall of the first side mounting plate.

[0009] Optionally, the first lower assembly component comprises a second end mounting plate and at least one second side mounting plate arranged on the second end mounting plate.

[0010] Optionally, the first end mounting plate is provided with a first mounting through hole for detachable connection with the to-be-assembled connecting piece, the first side mounting plate is provided with two first side mounting plates arranged on opposite sides of the first end mounting plate respectively, the adjusting part is a guide sliding groove, and the optical element is in sliding connection with the guide sliding groove through the second upper assembly component.

[0011] Optionally, the second end mounting plate is provided with a second mounting through hole for detachable connection with the to-be-assembled connecting piece, the second side mounting plate is provided with two second side mounting plates arranged on opposite sides of the second end mounting plate respectively, and a first rotating shaft assembly hole for rotary connection with the optical element is arranged on a side wall of the second side mounting plate.

[0012] Optionally, the first side mounting plate and the second side mounting plate are both provided with a third mounting through hole for detachable connection with the to-be-assembled connecting piece.

[0013] Optionally, the second lower assembly component comprises an L-shaped top connecting plate and a first bottom plate assembly, the first bottom plate assembly is provided with a first rotating shaft through hole and a first arc-shaped sliding groove surrounding the first rotating shaft through hole, and the top of the top connecting plate is provided with a second rotating shaft through hole matched with the first rotating shaft through hole and a first connecting through hole matched with the first arc-shaped sliding groove.

[0014] Optionally, the first bottom plate assembly is provided with sliding connecting plates on both sides, the sliding connecting plates are provided with second connecting through holes matched with the guide sliding through grooves, the first rotating shaft through hole and the second rotating shaft through hole are provided with connecting pieces, the first arc-shaped sliding groove and the first connecting through hole are provided with connecting pieces, and the guide sliding through groove and the second connecting through hole are provided with connecting pieces.

[0015] Optionally, the second lower assembly component includes an L-shaped bottom connecting plate and a second bottom plate assembly, the second bottom plate assembly is provided with a third rotating shaft through hole and a second arc-shaped sliding groove around the third rotating shaft through hole, the top of the bottom connecting plate is provided with a fourth rotating shaft through hole matched with the third rotating shaft through hole and a third connecting through hole matched with the second arc-shaped sliding groove, rotating connecting plates are arranged on both sides of the second bottom plate assembly, the rotating connecting plates are provided with second rotating shaft assembly holes matched with the first rotating shaft assembly holes, the third rotating shaft through hole and the fourth rotating shaft through hole are provided with connecting pieces, the second arc-shaped sliding groove and the third connecting through hole are provided with connecting pieces, and the first rotating shaft assembly hole and the second rotating shaft assembly hole are provided with connecting pieces.

[0016] Optionally, the top connecting plate and one side of the bottom connecting plate are provided with fourth connecting through holes, one side of the optical element is provided with a connecting groove matched with the fourth connecting through hole, and the fourth connecting through hole and the connecting groove can be provided with connecting pieces to detachably connect the top connecting plate and the bottom connecting plate with the optical element.

[0017] The beneficial effects of the present application are as follows:

[0018] The top of the optical element and the connecting piece to be assembled are assembled and connected by the upper support body and the lower support body, respectively, and the bottom of the optical element and the connecting piece to be assembled are assembled and connected, at this time, if it is necessary to adjust the inclination angle of the optical element, the top of the optical element can be slidably displaced along the adjusting part, after the sliding displacement is completed, the top of the optical element and the adjusting part can be fastened and connected through the connecting piece, so as to limit the displacement of the top of the optical element along the adjusting part, and since the first lower assembly component is rotationally connected with the optical element, when the top of the optical element is slidably displaced along the adjusting part, the optical element and the lower support body are prevented from being stuck, so as to achieve the purpose of adjusting the inclination angle of the optical element. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments, and the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the premise that:

[0020] Figure 1 is the overall explosion schematic diagram of the utility model.

[0021] Figure 2 is the axonometric schematic diagram of the upper support body in the utility model.

[0022] Figure 3 is the axonometric schematic diagram of the lower support body in the utility model.

[0023] Figure 4 is the axonometric schematic diagram when assembling the utility model.

[0024] Figure 5 is the A part enlarged schematic diagram in the utility model. Figure 4

[0025] Figure 6 is the B part enlarged schematic diagram in the utility model. Figure 4

[0026] The reference signs are:

[0027] 100, upper support body;110, first upper assembly component;111, first end mounting plate;111.1, first mounting through hole;112, first side mounting plate;113, adjusting part;120, second upper assembly component;121, top connecting plate;122, first bottom plate assembly;123, first rotating shaft through hole;124, first arc-shaped sliding groove;125, first connecting through hole;126, sliding connecting plate;127, second connecting through hole;128, second rotating shaft through hole;

[0028] 200, lower support body;210, first lower assembly component;211.1, rotating connecting plate;212, second end mounting plate;212.1, second mounting through hole;213, second side mounting plate;213.1, first rotating shaft assembly hole;221, bottom connecting plate;222, second bottom plate assembly;223, third rotating shaft through hole;224, second arc-shaped sliding groove;225, fourth rotating shaft through hole;226, third connecting through hole;240, fourth connecting through hole 300, to be assembled connecting piece;310, connecting groove;311, second rotating shaft assembly hole;320, third mounting through hole;

[0029] 400, optical element. DETAILED DESCRIPTION

[0030] ​​In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model below, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor are within the protection scope of the utility model.

[0031] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For the ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0033] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the characteristics of different embodiments or examples without contradiction.

[0034] The utility model embodiment such as Figures 1-6As shown in the figure, the mounting bracket related to the safety grating comprises an upper bracket body 100 and a lower bracket body 200, the upper bracket body 100 comprises a first upper assembly component 110 for detachable connection with the to-be-assembled connecting piece 300 and a second upper assembly component 120 for detachable connection with the top of the optical element 400, the first upper assembly component 110 comprises an adjusting part 113, the second upper assembly component 120 is in sliding connection with the adjusting part 113, and the top of the optical element can be slidably displaced along the adjusting part 113 through the second upper assembly component 120; the lower bracket body 200 is arranged below the upper bracket body 100 and comprises a first lower assembly component 210 for detachable connection with the bottom of the optical element 400 and a second lower assembly component for detachable connection with the to-be-assembled connecting piece 300, and the first lower assembly component 210 is in rotational connection with the second lower assembly component; in use, firstly, the top of the optical element 400 is assembled and connected with the to-be-assembled connecting piece 300 through the upper bracket body 100 and the lower bracket body 200, and the bottom of the optical element 400 is assembled and connected with the to-be-assembled connecting piece 300; at this time, if it is necessary to adjust the inclination angle of the optical element 400, the top of the optical element 400 can be slidably displaced along the adjusting part 113 through the second upper assembly component, after the sliding displacement is completed, the top of the optical element 400 can be fastened and connected with the adjusting part 113 through the connecting piece and the second upper assembly component, so as to limit the displacement of the top of the optical element 400 along the adjusting part 113, and since the first lower assembly component is in rotational connection with the second lower assembly component, when the top of the optical element 400 is slidably displaced along the adjusting part 113, the optical element 400 avoids being stuck with the lower bracket body 200, so as to achieve the purpose of adjusting the inclination angle of the optical element 400; further, the upper bracket body 100 and the lower bracket body 200 jointly provide stable support for the optical element 400, and the stability of the whole system is enhanced, the upper bracket body 100 and the lower bracket body 200 and the assembly components are all designed to be detachably connected, so that the upper bracket body 100 and the lower bracket body 200 can be conveniently replaced and maintained, and in this embodiment, the optical element 400 is a safety grating.

[0035] Referring to Figures 1-4In the embodiment, the first upper assembly component 110 comprises a first end mounting plate 111 and at least one first side mounting plate 112 arranged on the first end mounting plate 111, the adjusting part 113 is arranged on the side wall of the first side mounting plate 112, further, the first end mounting plate 111 is provided with a first mounting through hole 111.1 for detachable connection with the to-be-assembled connecting piece 300, the first side mounting plate 112 is provided with two and arranged on the opposite sides of the first end mounting plate 111 respectively, the adjusting part 113 is a guide sliding groove, the optical element 400 is slidably connected on the guide sliding groove, specifically, the to-be-assembled connecting piece 300 can be a to-be-assembled column, the to-be-assembled column is provided with a connecting groove 310 on the wall around the to-be-assembled column, the to-be-assembled connecting piece 300 is connected with the first end mounting plate 111 by passing through the first mounting through hole 111.1 and being fastened with the connecting groove 310, the top of the optical element 400 body is arranged between the two first side mounting plates 112, the guide sliding groove provides a smooth and accurate sliding path for the optical element 400, so that the adjustment of the inclination angle of the safety grating becomes very simple and intuitive, the user only needs to slide the safety grating along the guide sliding groove, and then fixes it at the required position by means of appropriate fasteners, the fasteners can be bolts and nuts or self-tapping screws, in the embodiment, the first end mounting plate 111 and the first side mounting plate 112 are integrally formed, further, the to-be-assembled connecting piece can also be various devices such as walls or fences, railings, etc., the connecting groove can be arranged on the side wall of the various devices such as walls or fences, railings, etc., so as to facilitate the adaptation of the upper bracket body 100 and the lower bracket body 200 in various scenes.

[0036] Referring to Figures 1-4In the embodiment, the first lower assembly component 210 comprises a second end mounting plate 212 and at least one second side mounting plate 213 arranged on the second end mounting plate 212, further, the second end mounting plate 212 is provided with a second mounting through hole 212.1 for detachable connection with the to-be-assembled connecting piece 300, and the second side mounting plate 213 is provided with two second side mounting plates 213 arranged on opposite sides of the second end mounting plate 212 respectively, and the sidewall of the second side mounting plate 213 is provided with a first rotating shaft assembly hole 213.1 for rotationally connecting with the optical element 400, specifically, the second end mounting plate 212 and the optical element 400 can be detachably connected by fastening the connecting piece on the second mounting through hole 212.1 and the connecting groove 310 on the to-be-assembled column, the bottom of the optical element 400 is arranged between the two second side mounting plates 213, the optical element 400 is provided with a second rotating shaft assembly hole 311, and the optical element 400 and the second side mounting plate 213 are rotationally connected by the connecting piece passing through the first rotating shaft assembly hole 213.1 and the second rotating shaft assembly hole 311, wherein the connecting piece is a bolt and a nut or a self-tapping screw, when the inclination of the optical element 400 needs to be adjusted, the bolt and the nut are only needed to be loosened in the reverse direction, so that the optical element 400 can be rotated around the bolt as the center axis, after the inclination of the optical element 400 is adjusted, the bolt and the nut can be tightened in the positive direction, so as to limit the rotation of the optical element 400, prevent the optical element 400 from moving or vibrating during work, and ensure the precision and long-term reliability of the optical system.

[0037] Referring to Figures 1-4 In the embodiment, the first side mounting plate 112 and the second side mounting plate 213 are both provided with a third mounting through hole 320 for detachable connection with the to-be-assembled connecting piece 300, further, the first end mounting plate 111 and the second end mounting plate 212 can also not be connected with the to-be-assembled connecting piece 300, and the connecting piece can be connected with the connecting groove 310 on the sidewall of the to-be-assembled connecting piece 300 after passing through the third mounting through hole 320.

[0038] Referring to Figures 1-4In the embodiment, the second lower assembly component includes a top connecting plate 121 in L shape and a first bottom plate assembly piece 122, the first bottom plate assembly piece 122 is provided with a first rotating shaft through hole 123 and a first arc-shaped sliding groove 124 around the first rotating shaft through hole 123, the top of the top connecting plate 121 is provided with a second rotating shaft through hole 128 matched with the first rotating shaft through hole 123 and a first connecting through hole 125 matched with the first arc-shaped sliding groove 124, both sides of the first bottom plate assembly piece 122 are provided with sliding connecting plates 126, the sliding connecting plates 126 are provided with second connecting through holes 127 matched with the guide sliding grooves, the first rotating shaft through hole 123 and the second rotating shaft through hole 128 are provided with connecting pieces, the first arc-shaped sliding groove 124 and the first connecting through hole 125 are provided with connecting pieces, and the guide sliding grooves and the second connecting through holes 127 are provided with connecting pieces, specifically, the bottom of the top connecting plate 121 is connected with the connecting groove 310 of the element body 410 side wall, the top of the top connecting plate 121 passes through the first rotating shaft through hole 123 and the second rotating shaft through hole 128 through the connecting piece to connect the top connecting plate 121 with the first bottom plate assembly piece 122, further, the second lower assembly component includes a bottom connecting plate 221 in L shape and a second bottom plate assembly piece 222, the second bottom plate assembly piece 222 is provided with a third rotating shaft through hole 223 and a second arc-shaped sliding groove 224 around the third rotating shaft through hole 223, the top of the bottom connecting plate 221 is provided with a fourth rotating shaft through hole 225 matched with the third rotating shaft through hole 223 and a third connecting through hole 226 matched with the second arc-shaped sliding groove 224, both sides of the second bottom plate assembly piece 222 are provided with rotating connecting plates 211.1, the rotating connecting plates 211.1 are provided with second rotating shaft assembly holes 311 matched with the first rotating shaft assembly holes 213.1, the third rotating shaft through hole 223 and the fourth rotating shaft through hole 225 are provided with connecting pieces, the second arc-shaped sliding groove 224 and the third connecting through hole 226 are provided with connecting pieces, and the first rotating shaft assembly hole 213.1 and the second pivot assembly hole 311 is provided with a connecting piece, further, the top of the bottom connecting plate 221 is connected with the connecting groove 310 of the side wall of the element body 410, the bottom of the bottom connecting plate 221 is connected with the second bottom plate assembly 222 by penetrating the third pivot through hole 223 and the fourth pivot through hole 225 through the connecting piece, in use, the connecting piece is penetrated through the first connecting through hole 125 and the first arc-shaped sliding groove 124, so that the top connecting plate 121 can rotate along the first arc-shaped sliding groove 124 with the connecting piece in the first pivot through hole 123 and the second pivot through hole 128 as the axis, so that the optical element 400 can be rotated to adjust the horizontal angle, when the horizontal angle is adjusted, the top connecting plate 121 and the first bottom plate assembly 122 are fastened and connected by tightening the connecting piece, so that the optical element 400 is prevented from being rotated by mistake in use, the connecting piece is penetrated through the third connecting through hole 226 and the second arc-shaped sliding groove 224, so that the top connecting plate 121 can rotate along the second arc-shaped sliding groove 224 with the connecting piece in the third pivot through hole 223 and the fourth pivot through hole 225 as the axis, so that the optical element 400 can be rotated to adjust the horizontal angle, when the horizontal angle is adjusted, the bottom connecting plate 221 and the second bottom plate assembly 222 are fastened and connected by tightening the connecting piece, so that the optical element 400 is prevented from being rotated by mistake in use.

[0039] Referring to Figures 1-4 In the embodiment, one side of the top connecting plate 121 and the bottom connecting plate 221 is provided with a fourth connecting through hole 240, one side of the optical element 400 is provided with a connecting groove 310 matched with the fourth connecting through hole 240, the top connecting plate 121 and the bottom connecting plate 221 are detachably connected with the optical element 400 by penetrating the fourth connecting through hole 240 and the connecting groove 310 with a connecting piece, in the embodiment, the connecting piece can be a bolt and a nut or a self-tapping screw.

[0040] It should be understood that those of ordinary skill in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the utility model.

Claims

1. A mounting bracket for a safety grating, characterized by The utility model relates to a kind of optical element mounting device, including: Upper support body (100), the upper support body (100) includes the first upper assembly (110) for being detachably connected with the connector (300) to be assembled and the second upper assembly (120) for being detachably connected with the top of optical element (400), adjusting part (113) is provided on the first upper assembly (110), the second upper assembly (120) is slidably connected with the adjusting part (113), and the top of the optical element (400) can be slidably displaced along the adjusting part (113) by the second upper assembly (120); Lower support body (200), the lower support body (200) is arranged below the upper support body (100) and includes the first lower assembly (210) for being detachably connected with the bottom of optical element (400) and the second lower assembly for being detachably connected with the connector (300) to be assembled, and the first lower assembly (210) is rotatably connected with the second lower assembly.

2. The mounting bracket for a safety grating of claim 1, wherein, The first upper assembly (110) includes first end mounting plate (111) and at least one first side mounting plate (112) provided on the first end mounting plate (111), and the adjusting part (113) is provided on the side wall of first side mounting plate (112).

3. The mounting bracket for a safety grating of claim 2, wherein, The first lower assembly (210) includes second end mounting plate (212) and at least one second side mounting plate (213) provided on the second end mounting plate (212).

4. The mounting bracket for a safety grating of claim 3, wherein, First mounting through hole (111.1) is provided on the first end mounting plate (111) for being detachably connected with the connector (300) to be assembled, and the first side mounting plate (112) is provided with two and is arranged on the opposite side of the first end mounting plate (111) respectively, the adjusting part (113) is guide sliding channel, and the optical element (400) is slidably connected on the guide sliding channel by the second upper assembly (120).

5. The mounting bracket for a safety grating of claim 4, wherein, Second mounting through hole (212.1) is provided on the second end mounting plate (212) for being detachably connected with the connector (300) to be assembled, and the second side mounting plate (213) is provided with two and is arranged on the opposite side of the second end mounting plate (212) respectively, and first rotation shaft assembly hole (213.1) is provided on the side wall of the second side mounting plate (213) for being rotatably connected with the optical element (400).

6. The mounting bracket for a safety grating of claim 5, wherein, Third mounting through hole (320) is provided on the first side mounting plate (112) and the second side mounting plate (213) for being detachably connected with the connector (300) to be assembled.

7. A mounting bracket for a safety grating according to claim 6, characterised in that, The second upper assembly component (120) comprises a top connecting plate (121) in L shape and a first bottom plate assembly piece (122), the first bottom plate assembly piece (122) is provided with a first rotating shaft through hole (123) and a first arc-shaped sliding groove (124) surrounding the first rotating shaft through hole (123), the top of the top connecting plate (121) is provided with a second rotating shaft through hole (128) matched with the first rotating shaft through hole (123) and a first connecting through hole (125) matched with the first arc-shaped sliding groove (124).

8. A mounting bracket for a safety grating according to claim 7, characterised in that, The two sides of the first bottom plate assembly piece (122) are provided with sliding connecting plates (126), the sliding connecting plates (126) are provided with second connecting through holes (127) matched with the guide sliding grooves, the first rotating shaft through hole (123) and the second rotating shaft through hole (128) are provided with connecting pieces, the first arc-shaped sliding groove (124) and the first connecting through hole (125) are provided with connecting pieces, and the guide sliding grooves and the second connecting through holes (127) are provided with connecting pieces.

9. A mounting bracket for a safety grating according to claim 8, characterised in that, The second lower assembly component comprises a bottom connecting plate (221) in L shape and a second bottom plate assembly piece (222), the second bottom plate assembly piece (222) is provided with a third rotating shaft through hole (223) and a second arc-shaped sliding groove (224) surrounding the third rotating shaft through hole (223), the top of the bottom connecting plate (221) is provided with a fourth rotating shaft through hole (225) matched with the third rotating shaft through hole (223) and a third connecting through hole (226) matched with the second arc-shaped sliding groove (224), the two sides of the second bottom plate assembly piece (222) are provided with rotating connecting plates (211.1), the rotating connecting plates (211.1) are provided with second rotating shaft assembly holes (311) matched with the first rotating shaft assembly holes (213.1), the third rotating shaft through hole (223) and the fourth rotating shaft through hole (225) are provided with connecting pieces, the second arc-shaped sliding groove (224) and the third connecting through hole (226) are provided with connecting pieces, and the first rotating shaft assembly hole (213.1) and the second rotating shaft assembly hole (311) are provided with connecting pieces.

10. The mounting bracket for a safety grating of claim 9, wherein, The top connecting plate (121) and the bottom connecting plate (221) are provided with fourth connecting through holes (240) on one side, the optical element (400) is provided with a connecting groove (310) matched with the fourth connecting through hole (240) on one side, and the fourth connecting through hole (240) and the connecting groove (310) are provided with connecting pieces, so that the top connecting plate (121) and the bottom connecting plate (221) are detachably connected with the optical element (400).

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