A construction safety protection device

Abstract

The application relates to the field of building construction, in particular to a building construction safety protection device, which comprises a protection plate, the protection plate comprises sliding plate one and sliding plate two, the sliding plate one and the sliding plate two are slidably connected, the lower ends of the sliding plate one and the sliding plate two are respectively provided with supporting devices, fixing devices and moving devices, the fixing device is arranged between the supporting device and the moving device, the two moving devices are arranged on the opposite sides of the sliding plate one and the sliding plate two, and connecting devices are arranged between the side walls of the sliding plate one and the sliding plate two. In the transportation process, the multiple protection plates are spliced together through the limitation of the fixing strips and the fixing grooves, the relative movement between the protection plates is limited, a large amount of transportation is facilitated, and the moving devices can also facilitate the workers to carry the single protection plate.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to a building construction safety protection device. Background Technology

[0002] With the increasing number of construction projects, the construction industry is experiencing a surge in workers, high turnover rates, long construction periods, and complex job types, making on-site safety management extremely challenging. Construction sites are fraught with hazards; inadequate safety facilities, incomplete safety management measures, and unauthorized personnel entering the site can easily lead to accidents, causing injuries, fatalities, and economic losses, seriously threatening the safety of construction projects. Therefore, establishing safety facilities and improving safety management measures are crucial for ensuring the safety of on-site construction workers.

[0003] Among existing construction safety protection devices, such as the one disclosed in CN209339727U, a construction safety protection device includes a support rod with an internal mounting groove. A movable shaft is rotatably mounted at the upper and lower ends of the inner side of the mounting groove. A handle is fixedly mounted at the upper end of the movable shaft, and a fabric rolling groove is fixedly mounted on the surface of the movable shaft. A fabric curtain is wound around the inner side of the fabric rolling groove. A fabric outlet is provided on the side of the support rod, and one end of the fabric curtain passes through the fabric outlet and is fixedly connected to a semi-circular ring. A fixing ring is fixedly mounted on the side of the support rod. This construction safety protection device facilitates the assembly and disassembly of the guardrail through the semi-circular ring and fixing ring structure. Furthermore, by inserting a rod into the ground, the support rod can be fixed, improving the overall stability of the guardrail.

[0004] However, the above-mentioned existing technologies have some drawbacks in terms of safety protection during construction: 1. Due to the design of its structure, the above-mentioned existing technologies are inconvenient to move during the process of moving, resulting in slow handling efficiency and high physical exertion for workers.

[0005] 2. During installation, since the existing technology mentioned above only fixes the support rod by inserting the plug into the ground, when encountering hard ground, the plug cannot be inserted into the ground, the device will lose its fixing effect, the device cannot stand upright, and lose its protective effect.

[0006] 3. In the use of the above-mentioned existing device, the devices are connected by a semi-circular ring and a fixed ring, and the protective effect is only achieved by the barrier of the fabric. If the device is subjected to a large external force, the semi-circular ring and the fixed ring of the device are easily damaged or the fabric is torn. In this case, the device loses its effect of blocking the danger zone and is prone to danger.

[0007] Based on this, and given the above viewpoints, there is still room for improvement in existing technologies for safety protection devices in building construction. Summary of the Invention

[0008] To address the aforementioned technical problems, this application provides a construction safety protection device, employing the following technical solution:

[0009] A construction safety protection device includes a protective plate, which comprises a sliding plate one and a sliding plate two, and the sliding plate one and the sliding plate two are slidably connected. The lower ends of the sliding plate one and the sliding plate two are respectively provided with a support device, a fixing device and a moving device. The fixing device is located between the support device and the moving device, and the two moving devices are respectively located on opposite sides of the sliding plate one and the sliding plate two. A connecting device is provided between the side walls of the sliding plate one and the sliding plate two.

[0010] Preferably, the connecting device includes an assembly groove, a locking mechanism, a deadbolt mechanism, a mounting plate, lock holes, and buckles. The first sliding plate has an assembly groove on its side wall opposite to the second sliding plate. The assembly groove contains a locking mechanism and a deadbolt mechanism, which is used to lock the locking mechanism. The mounting plate is installed at the opening of the assembly groove. The mounting plate has several lock holes distributed at equal intervals. The second sliding plate has buckles on its side wall opposite to the first sliding plate that correspond to the positions of the lock holes.

[0011] Preferably, the support device includes an assembly groove, a rotating shaft, a rotating plate, a support frame, a locking protrusion, a fixing plate, fixing holes, adjusting blocks, and elastic sliding blocks. Assembly grooves are provided on the front and rear ends of the lower ends of both sliding plates. A rotating shaft is installed at the lower end of the assembly groove. The rotating shaft is rotatably connected to one end of the rotating plate. The other end of the rotating plate is hinged to the middle of the support frame. A locking protrusion is provided on the upper end of the support frame. A fixing plate is hinged to the lower end of the support frame. Two through fixing holes are provided on the fixing plate. Adjusting blocks are arranged at equal intervals in the upper half of the assembly groove, and the adjusting blocks are inclined downwards. Elastic sliding blocks are installed on the upper ends of the opposite side walls of the assembly groove, and inclined surfaces that abut against the locking protrusions are provided on the front and rear ends of the opposite side of the two elastic sliding blocks.

[0012] Preferably, the fixing device includes an assembly port, a cylinder, a fixed cone, a limiting hole, a fixing post, a first gear, a limiting post, a limiting pin, a gear shaft, a second gear, and a rotating handle. The lower ends of the first sliding plate and the second sliding plate are respectively provided with assembly ports. A cylinder is installed at the upper end of the assembly port. A hollow fixed cone is threaded inside the cylinder. A limiting hole is provided on the side of the fixed cone. A limiting post is slidably fitted inside the fixed cone. A first gear is installed at the upper end of the limiting post. A limiting pin is provided on the side of the limiting post, and the limiting pin is slidably disposed in the limiting hole on the side of the fixed cone. A fixing post is also provided at the upper end of the assembly port, and the lower end of the fixing post is rotatably connected to the upper end of the limiting post. A gear shaft is rotatably installed on the side wall of the fixing post. A second gear is installed on the gear shaft, and the second gear meshes with the first gear. A rotating handle is installed at the end of the gear shaft opposite to the fixing post.

[0013] Preferably, the moving device includes a circular groove, a telescopic spring, a fixed sleeve, a sliding cylinder, an adjustment hole, an adjustment column, a turntable, a wheel frame, a wheel axle, a rotating wheel, and a retraction unit. Both sliding plates one and two have circular grooves at their lower ends. A telescopic spring is installed on each circular groove. A fixed sleeve is installed around each circular groove. A hollow sliding cylinder is fitted inside the fixed sleeve, sliding within it. The upper end of the sliding cylinder is connected to one end of the telescopic spring. An adjustment hole is provided on the side wall of the fixed sleeve. An adjustment column is provided on the side wall of the sliding cylinder, slidably positioned within the adjustment hole. A turntable is rotatably mounted on the lower end of the sliding cylinder. A wheel frame is symmetrically mounted on the lower end of the turntable. A wheel axle is rotatably mounted on the wheel frame, penetrating the wheel frame. A rotating wheel is mounted on the wheel axle. A retraction unit that mates with the circular groove is provided inside the sliding cylinder.

[0014] Preferably, the retraction unit includes a connecting post, a limiting ring, a limiting cylinder, a square groove, a first spring, a limiting slider, a limiting hook, a cross-shaped hole, a second spring, a reset pin, a reset hole, and a synchronous ring. The lower end of the central protrusion of the circular groove is provided with a connecting post. The lower side wall of the connecting post is fitted with a limiting ring, and the upper end of the limiting ring is chamfered so that the upper end of the limiting ring is flush with the connecting post. The lower end of the connecting post is provided with a limiting cylinder, and the limiting cylinder is located below the limiting ring. The diameter of the limiting cylinder is larger than the diameter of the limiting ring, and the upper end of the limiting cylinder is also chamfered so that the upper end of the limiting cylinder is flush with the connecting post.

[0015] The connecting column, limiting ring, and limiting cylinder are slidably engaged with the inside of the sliding cylinder. The inner wall of the sliding cylinder is provided with multiple square grooves circumferentially. A limiting slider is slidably arranged in the square groove. A first spring is provided between the side of the limiting slider away from the connecting column and the square groove. One end of the first spring is connected to the limiting slider, and the limiting slider slides in the square groove. The end of the limiting slider near the connecting column is provided with an inclined surface that is inclined towards the chamfer of the limiting cylinder. The other end of the limiting slider is provided with a limiting hook. The limiting hook is sleeved in the hollow part of the first spring and does not contact the first spring. The side of the limiting hook away from the limiting slider is provided with a downward inclined protrusion.

[0016] The bottom of the square groove is also provided with a cross-shaped hole, and the horizontal section of the cross-shaped hole is connected to the square groove. A second spring is installed at the bottom of the vertical section of the cross-shaped hole. The upper end of the second spring is connected to a reset pin, and the middle of the reset pin is provided with a reset hole facing the limit slider. A synchronous ring is provided above the sliding cylinder. The upper end of the reset pin passes through to the top of the sliding cylinder and is connected to the synchronous ring. The synchronous ring abuts against the top of the circular groove.

[0017] Preferably, the locking mechanism includes a locking shaft, a locking knob, gear three, gear rod, gear four, locking connecting rod, parallel rod, sliding groove, sliding shaft, locking slide groove, locking slider, locking pin, locking plate, positioning hole, return spring, spring pad and linkage rod. The locking shaft is symmetrically and rotatably installed through the side wall of the assembly groove. The locking shaft corresponds to the position of the lock hole. The two locking shafts corresponding to one of the lock holes are each equipped with a locking knob at opposite ends. The locking knob is placed outside the assembly groove. Gear three is installed at opposite ends of the two locking shafts. Gear rod is installed on the inner wall of the assembly groove away from the mounting plate. Gear four is rotatably installed at one end of the gear rod. The two symmetrical gear threes mesh with gear four.

[0018] A locking link is installed on the locking shaft, and the middle part of the locking link is installed on the locking shaft. Two locking links corresponding to one of the lock holes are distributed in a crisscross pattern. The end of the locking link near the mounting plate is connected to a horizontally arranged parallel rod. A sliding groove is provided on the end of the parallel rod away from the mounting plate. A sliding shaft is rotatably provided on the end of the locking link away from the mounting plate, and the sliding shaft slides in the sliding groove.

[0019] A locking groove is provided on one end of the parallel rod near the mounting plate. A locking slider is slidably installed on the locking groove. Locking pins are respectively provided at the ends of the two locking sliders that are close to each other. Locking plates are symmetrically distributed at the upper and lower ends of the lock hole. A positioning hole is provided on the locking plate, and the locking pin slides in the positioning hole. A spring washer is provided on the locking pin, and the spring washer is between the parallel rod and the locking plate. A return spring is also sleeved on the locking pin, and one end of the return spring is installed on the spring washer, and the other end is installed on the locking plate. Two linkage rods are provided in the assembly groove, and all parallel rods located on the same vertical plane are installed on the same linkage rod.

[0020] Preferably, the locking mechanism includes a mounting hole, a sliding bar, a locking spring, a locking block, and a locking button. The mounting hole is provided on the side wall of the sliding plate and is located between the locking shaft and the linkage rod. The sliding bar is slidably mounted in the mounting hole. The locking spring is sleeved on the sliding bar, and one end of the locking spring is in close contact with the side wall of the mounting groove. A locking block is provided at the end of the sliding bar near the mounting groove. The locking block is connected to the other end of the locking spring. A locking button is threadedly connected to the end of the sliding bar away from the locking block, and the locking button is rotatably mounted in the mounting hole in a detachable manner.

[0021] Preferably, a horizontally extending fixing strip is provided on one side wall of the upper end of the sliding plate, and a fixing groove is provided on the other side wall of the upper end of the sliding plate to engage with the fixing strip, and the fixing groove and the fixing strip are positioned correspondingly.

[0022] The upper end of the second sliding plate is provided with horizontally extending guide strips on both the front and rear sides, and the upper end of the first sliding plate is provided with guide grooves that slide in cooperation with the guide strips on both the front and rear side walls.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During transportation, the present invention uses fixing strips and fixing grooves to splice multiple protective plates together, restricting the relative movement between the protective plates, which facilitates large-scale transportation. The moving device also makes it easy for workers to carry individual protective plates.

[0025] 2. The present invention uses a fixing device to insert into the ground to fix sliding plate one and sliding plate two, thereby improving stability. When installation is required on the ground where drilling is not possible, a support device is used to fix sliding plate one and sliding plate two to achieve a protective effect.

[0026] 3. During use, the protective panels can prevent workers from entering the danger zone, and the panels are rigidly connected, so they also have a certain impact resistance, thus providing sufficient protection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the mobile device of the present invention.

[0029] Figure 3 This is the present invention. Figure 2 A magnified view of part A.

[0030] Figure 4 This is a schematic diagram of the planar structure of the recovery unit of the present invention.

[0031] Figure 5 This is a schematic diagram of the support device of the present invention.

[0032] Figure 6 This is the present invention. Figure 5 A magnified view of section B.

[0033] Figure 7 This is a schematic diagram of the fixing device of the present invention.

[0034] Figure 8 This is the present invention. Figure 7 A magnified view of a portion of point C.

[0035] Figure 9 This is a schematic diagram of the connecting device of the present invention.

[0036] Figure 10 This is the present invention. Figure 9 A magnified view of a portion of point D.

[0037] Figure 11 This is a schematic diagram of the locking mechanism of the present invention.

[0038] Figure 12 This is the present invention. Figure 11 A magnified view of a portion at point E.

[0039] Figure 13 This is a schematic diagram of the structure of the buckle, parallel rod, locking slider, locking pin, positioning hole, return spring, and spring pad of the present invention.

[0040] Figure 14 This is a schematic diagram of the locking mechanism of the present invention.

[0041] Explanation of reference numerals in the attached drawings: 1. Protective plate; 2. Sliding plate one; 21. Fixing groove; 22. Fixing strip; 23. Guide groove; 3. Sliding plate two; 31. Guide strip; 4. Moving device; 41. Circular groove; 42. Telescopic spring; 43. Fixing sleeve; 44. Sliding cylinder; 45. Adjusting hole; 46. Adjusting column; 47. Turntable; 48. Wheel frame; 49. Wheel axle; 410. Rotating wheel; 5. Retraction unit; 51. Connecting column; 52. Limiting ring; 53. Limiting... 54. Cylindrical; 55. Square groove; 56. First spring; 57. Limiting slider; 58. Limiting hook; 59. Cross-shaped hole; 50. Second spring; 510. Reset pin; 511. Reset hole; 512. Synchronizing ring; 6. Support device; 61. Assembly groove; 62. Rotating shaft; 63. Rotating plate; 64. Support frame; 65. Locking protrusion; 66. Fixing plate; 67. Fixing hole; 68. Adjusting block; 69. Elastic sliding block; 7. Fixing device; 71. Assembly port; 72. Cylinder; 73. Fixed cone; 74. Limiting hole; 75. Fixed post; 76. Gear one; 77. Limiting post; 78. Limiting pin; 79. Gear shaft; 710. Gear two; 711. Rotating handle; 8. Connecting device; 81. Assembly slot; 82. Locking mechanism; 821. Locking shaft; 822. Locking knob; 823. Gear three; 824. Gear rod; 825. Gear four; 826. Locking connecting rod; 827. Parallel rod; 8 28. Sliding groove; 829. Sliding shaft; 8210. Locking groove; 8211. Locking slider; 8212. Locking pin; 8213. Locking plate; 8214. Positioning hole; 8215. Return spring; 8216. Spring pad; 8217. Linkage rod; 83. Reverse locking mechanism; 831. Mounting hole; 832. Sliding bar; 833. Reverse locking spring; 834. Reverse locking block; 835. Reverse locking button; 84. Mounting plate; 85. Locking hole; 86. Buckle. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1 to 14 This application will be described in further detail.

[0043] This application discloses a construction safety protection device. It is described that the structural design of this construction safety protection device can be easily loaded and transported, thereby improving installation efficiency. Furthermore, this construction safety protection device can be fixed on various ground surfaces and can also isolate dangerous areas on the construction site to achieve sufficient protection.

[0044] refer to Figure 1This embodiment discloses a construction safety protection device, including a protective plate 1. The protective plate 1 includes a sliding plate 2 and a sliding plate 3, which are slidably connected. The sliding between the sliding plate 2 and the sliding plate 3 can extend the protection range of the protective plate 1. The lower ends of the sliding plate 2 and the sliding plate 3 are respectively provided with a support device 6, a fixing device 7, and a moving device 4. The fixing device 7 is located between the support device 6 and the moving device 4. Both the fixing device 7 and the support device 6 can fix the protective plate 1. The two moving devices 4 are respectively located on opposite sides of the sliding plate 2 and the sliding plate 3. The moving devices 4 can facilitate the transportation of the protective plate 1. A connecting device 8 is provided between the side walls of the sliding plate 2 and the sliding plate 3. The connecting device 8 can connect adjacent protective plates 1.

[0045] In the specific implementation process, the protective plate 1 can be slidably transported to the area that needs protection by the moving device 4. Then, according to the actual needs, the length of a single protective plate 1 can be controlled by sliding the sliding plate 2 3. An appropriate number of protective plates 1 can be selected and connected one by one by the connecting device 8. Then, according to the ground conditions that need to be fixed, the fixing device 7 and the support device 6 can be selected to fix several protective plates 1 on the ground to form a safe protection area.

[0046] refer to Figure 2 and Figure 3 The moving device 4 includes a circular groove 41, a telescopic spring 42, a fixed sleeve 43, a sliding cylinder 44, an adjusting hole 45, an adjusting column 46, a turntable 47, a wheel frame 48, a wheel axle 49, a rotating wheel 410, and a retraction unit 5. Both the sliding plate 1 2 and the sliding plate 2 3 have a circular groove 41 at their lower ends. A telescopic spring 42 is installed on the circular groove 41. A fixed sleeve 43 is also installed around the circular groove 41. A hollow sliding cylinder 44 is fitted inside the fixed sleeve 43. The sliding cylinder 44 slides inside the fixed sleeve 43, and its upper end is connected to one end of the telescopic spring 42. The telescopic spring 42 pulls the sliding cylinder 44 upward. An adjusting hole 45 is provided on the side wall of the fixed sleeve 43, and an adjusting column 46 is provided on the side wall of the sliding cylinder 44. The adjusting column 46 is slidably disposed in the adjusting hole 45. The cooperation between the adjusting column 46 and the adjusting hole 45 restricts the sliding range of the sliding cylinder 44 in the fixed sleeve 43 and the relative rotation between the sliding cylinder 44 and the fixed sleeve 43. At the same time, the adjusting column 46 can drive the sliding cylinder 44 to move downward. A turntable 47 is rotatably mounted on the lower end of the sliding cylinder 44. A wheel frame 48 is symmetrically mounted on the lower end of the turntable 47. A wheel axle 49 is rotatably mounted on the wheel frame 48 and passes through the wheel frame 48. A rotating wheel 410 is mounted on the wheel axle 49. The wheel axle 49 can make the rotating wheel 410 rotate in all directions to facilitate the movement of the protective plate 1. A retraction unit 5 is provided in the sliding cylinder 44 to cooperate with the circular groove 41. The retraction unit 5 can drive the sliding cylinder 44 and the rotating wheel 410 to move upward and reset.

[0047] In the specific implementation process, the adjusting column 46 is slid down to extend the sliding cylinder 44. At this time, the sliding cylinder 44 can remain extended under the restriction of the retraction unit 5. That is, the rotating wheel 410 is in contact with the ground. When the protective plate 1 is pushed to move, the rotating wheel 410 can be driven to rotate in all directions through the turntable 47, which facilitates the movement of the protective plate 1. After the protective frame is supported by the supporting device 6, the protective plate 1 can be raised to a certain height, so that the rotating wheel 410 moves a certain height above the ground. After the protective plate 1 is fixed by the supporting device 6 and the fixing device 7, when it is necessary to retract the rotating wheel 410, the adjusting column 46 is pushed down again so that the sliding cylinder 44 can drive the rotating wheel 410 to move up and reset with the cooperation of the retraction unit 5.

[0048] refer to Figure 4 The retraction unit 5 includes a connecting post 51, a limiting ring 52, a limiting cylinder 53, a square groove 54, a first spring 55, a limiting slider 56, a limiting hook 57, a cross hole 58, a second spring 59, a reset pin 510, a reset hole 511, and a synchronous ring 512. The lower end of the middle protrusion of the circular groove 41 is provided with a connecting post 51. The lower side wall of the connecting post 51 is fitted with a limiting ring 52, and the upper end of the limiting ring 52 is chamfered so that the upper end of the limiting ring 52 is flush with the connecting post 51. When the protective plate 1 needs to move, the sliding cylinder 44 and the rotating wheel 410 are driven to move downward by pushing the adjusting post 46. That is, the protective plate 1 can move on the ground through the rotating wheel 410. At this time, the limiting ring 52 can restrict the sliding cylinder 44 from moving upward and resetting.

[0049] Specifically, the connecting post 51 and the limiting ring 52 are both slidably engaged with the inside of the sliding cylinder 44. The inner wall of the sliding cylinder 44 is provided with a plurality of square grooves 54. The square grooves 54 are slidably provided with limiting sliders 56. A first spring 55 is provided between the side of the limiting slider 56 away from the connecting post 51 and the square groove 54. One end of the first spring 55 is connected to the limiting slider 56, and the limiting slider 56 slides in the square groove 54. The end of the limiting slider 56 that is close to the connecting post 51 is provided with an inclined surface that is inclined towards the chamfer direction of the limiting cylinder 53.

[0050] Slide the adjusting column 46 downwards to drive the sliding cylinder 44 downwards. The first spring 55 causes the inclined surface of the limiting slider 56 to slide downwards on the side wall of the connecting column 51 and the limiting ring 52. With the assistance of the chamfer at the upper end of the limiting ring 52, the limiting slider 56 can slide smoothly to the bottom of the limiting ring 52. At this time, the upper surface of the limiting slider 56 abuts against the lower surface of the limiting ring 52, so that the limiting ring 52 can block the sliding cylinder 44 from moving upwards. That is, at this time the rotating wheel 410 is in contact with the ground. The rotating wheel 410 facilitates the movement of the protective plate 1 on the ground.

[0051] After the protective plate 1 is moved to the designated position and suspended by the support device 6, the rotating wheel 410 needs to be driven to move upward and reset. Therefore, a limiting cylinder 53 is provided at the lower end of the connecting column 51, and the limiting cylinder 53 is located below the limiting ring 52. The diameter of the limiting cylinder 53 is larger than the diameter of the limiting ring 52, and the upper end of the limiting cylinder 53 is also provided with a chamfer, so that the upper end of the limiting cylinder 53 is flush with the connecting column 51. The limiting cylinder 53 slides in conjunction with the inside of the sliding cylinder 44.

[0052] The adjusting column 46 continues to move downward, causing the sliding cylinder 44 to move the limiting slider 56 downward synchronously. With the cooperation of the limiting cylinder 53 and its inclined surface, the limiting slider 56 will move towards the direction of the first spring 55. At this time, the limiting slider 56 is restricted so that it will not move towards the connecting column 51. Therefore, when the diameter of the limiting cylinder 53 is greater than the diameter of the limiting ring 52, when the sliding cylinder 44 moves upward and passes the limiting ring 52 under the pull of the telescopic spring 42, the limiting slider 56 does not contact the limiting ring 52. At this time, the sliding cylinder 44 drives the limiting slider 56 to move smoothly upward to the top of the limiting ring 52. At this time, the restriction on the sliding of the limiting slider 56 in the square groove 54 is released, that is, the limiting slider 56 contacts the side wall of the connecting column 51 again.

[0053] To facilitate the control of the sliding limit slider 56 in the square groove 54, this application provides a limit hook 57 at the other end of the limit slider 56. The limit hook 57 is sleeved in the hollow part of the first spring 55 and does not contact the first spring 55. The side of the limit hook 57 away from the limit slider 56 is provided with a downward-sloping protrusion. The bottom of the square groove 54 is also provided with a cross hole 58, and the horizontal section of the cross hole 58 is connected to the square groove 54. The bottom of the vertical section of the cross hole 58 is installed with a second spring 59. The upper end of the second spring 59 is connected to a reset pin 510, and the middle part of the reset pin 510 is provided with a reset hole 511 facing the limit slider 56.

[0054] When the limiting slider 56 abuts against the side wall of the limiting ring 52, the limiting slider 56 moves towards the reset pin 510 within the square groove 54. However, at this time, the limiting hook 57 does not move into the reset hole 511. That is, at this time, the reset pin 510 cannot restrict the limiting slider 56 from sliding within the square groove 54, so the limiting slider 56 smoothly abuts against the lower surface of the limiting ring 52, allowing the rotating wheel 410 to rotate on the ground. When the limiting slider 56 abuts against the side wall of the limiting cylinder 53, the limiting slider 56 drives the limiting hook 57 to move towards the reset pin 510. At this time, the limiting hook 57 is restricted by the reset hole 511 of the reset pin 510 through the protrusion at its lower end. At this time, the limiting slider 56 cannot move smoothly within the square groove 54. At this time, under the pull of the telescopic spring 42, the sliding cylinder 44 moves upward, and the limiting slider 56 will not abut against the limiting ring 52, allowing the sliding cylinder 44 and the rotating wheel 410 to move upward and reset smoothly.

[0055] After the limiting slider 56 moves up to above the limiting ring 52, it is necessary to release the restriction of the limiting slider 56 by the reset pin 510. Therefore, this application provides a synchronous ring 512 above the sliding cylinder 44. The upper end of the reset pin 510 passes through the upper part of the sliding cylinder 44 and is connected to the synchronous ring 512. The synchronous ring 512 abuts against the top of the circular groove 41.

[0056] When the sliding cylinder 44 retracts and the synchronous ring 512 abuts against the top of the circular groove 41, the reset pin 510 slides downward, the protrusion of the limit hook 57 disengages from the reset hole 511, and the limit slider 56 re-contacts the side surface of the connecting pin 51 under the action of the first spring 55.

[0057] refer to Figure 5 and Figure 6 The support device 6 includes an assembly groove 61, a rotating shaft 62, a rotating plate 63, a support frame 64, a locking protrusion 65, a fixing plate 66, fixing holes 67, an adjusting block 68, and an elastic sliding block 69. The front and rear ends of the lower end of the sliding plate 1 2 and the sliding plate 2 3 are both provided with assembly grooves 61. The rotating shaft 62 is installed at the lower end of the assembly groove 61. The rotating shaft 62 is rotatably connected to one end of the rotating plate 63. The other end of the rotating plate 63 is hinged to the middle of the support frame 64. The upper end of the support frame 64 is provided with a locking protrusion 65. The lower end of the support frame 64 is hinged to a fixing plate 66. The fixing plate 66 has two through fixing holes 67.

[0058] After the protective plate 1 is moved to the designated position, the moving device 4 needs to be retracted by rotating the rotating plate 63 and the support frame 64 so that one end of the support frame 64 is placed on the ground near the fixed plate 66, and the other end of the support frame 64 is locked. At this time, the support device 6 has the effect of suspending support, and the moving device 4 can be retracted. When encountering a hard ground, the fixed plate 66 is laid flat on the ground, and the rivets pass through the fixing holes 67 and are driven into the ground. At this time, the support device 6 fixes the protective plate 1.

[0059] In order to enable the end of the support frame 64 away from the fixed plate 66 to be locked and to adjust the support height of the support frame 64 as needed, this application provides an adjustment block 68 arranged at equal intervals in the upper half of the mounting groove 61, and the adjustment block 68 is inclined downward.

[0060] According to actual needs, the support frame 64 can be adjusted by locking any adjusting block 68 with the locking protrusion 65 at the upper end of the support frame 64, so as to realize the supporting function of the support device 6 on the protective plate 1.

[0061] When the protective plate 1 needs to be retracted, if the fixing plate 66 is fixed by rivets, after the rivets are released, in order to retract the rotating plate 63 and the support frame 64 into the assembly groove 61, this application installs elastic sliding blocks 69 on the upper ends of the opposite side walls of the assembly groove 61, and the front and rear ends of the opposite side of the two elastic sliding blocks 69 are provided with inclined surfaces that abut against the locking protrusion 65.

[0062] By rotating the rotating plate 63 and the support frame 64, the rotating plate 63 is pressed tightly against the support frame 64, and the end of the support frame 64 that is close to the fixed plate 66 is close to the rotating shaft 62. The elastic sliding block 69 locks the locking protrusion 65 at one end of the support frame 64 to prevent the support frame 64 from being stretched open.

[0063] refer to Figure 7 and Figure 8 When encountering soft ground, the support device 6 cannot effectively support and fix the protective plate 1. Therefore, this application uses a fixing device 7 to further fix the protective plate 1. Specifically, the fixing device 7 includes an assembly port 71, a cylinder 72, a fixing cone 73, a limiting hole 74, a fixing post 75, a gear 1 76, a limiting post 77, a limiting pin 78, a gear shaft 79, a gear 2 710, and a rotating handle 711. The lower ends of the sliding plate 1 2 and the sliding plate 2 3 are respectively provided with assembly ports 71, and the upper end of the assembly port 71 is equipped with a cylinder 72. 2. The internal threaded connection has a hollow fixed cone 73. The upper end of the assembly port 71 is also provided with a fixed post 75. The lower end of the fixed post 75 is rotatably connected to the upper end of the limiting post 77. When it is necessary to fix the soft ground, after the auxiliary support of the support device 6 is completed, the fixed cone 73 can be rotated. Under the threaded engagement between the cylinder 72 and the fixed cone 73, the fixed cone 73 can be extended. When the fixed cone 73 is extended, it can be inserted into the pre-set hole in the soft ground, and then the ground around the fixing device 7 is compacted, which plays the role of fixing the protective plate 1.

[0064] Furthermore, a limiting hole 74 is provided on the side of the fixed cone 73, and a limiting post 77 is slidably sleeved inside the fixed cone 73. A gear 76 is installed on the upper end of the limiting post 77, and a limiting pin 78 is provided on the side of the limiting post 77, and the limiting pin 78 is slidably disposed in the limiting hole 74 on the side of the fixed cone 73.

[0065] The rotation of gear 76 drives the rotation of the limiting post 77. At the same time, the engagement of the limiting pin 78 and the limiting hole 74 restricts the relative rotation between the limiting post 77 and the fixed cone 73. The rotation of the limiting post 77 drives the rotation of the fixed cone 73. Therefore, under the threaded engagement, the fixed cone 73 begins to move downward. Since the limiting post 77 is rotatably connected to the fixed post 75, the limiting post 77 will not move downward with the fixed cone 73, allowing the limiting pin 78 to slide within the limiting hole 74.

[0066] In order to control the rotation of gear 76, a gear shaft 79 is rotatably mounted on the side wall of the fixed column 75. Gear 710 is mounted on the gear shaft 79 and meshes with gear 76. A rotating handle 711 is mounted on the end of the gear shaft 79 away from the fixed column 75. The rotating handle 711 can be detached. After the fixing device 7 is fixed, the rotating handle 711 can be detached to prevent unauthorized personnel from removing the fixing device 7.

[0067] By rotating the handle 711, the second gear 710 rotates, causing the first gear 76 meshing with the second gear 710 to rotate, which in turn drives the limiting post 77 to rotate, thereby driving the fixed cone 73 to rotate. The fixed cone 73 is threadedly connected to the cylinder 72, which allows the fixed cone 73 to move up or down relative to the limiting post 77, so that the fixed cone 73 can extend or retract.

[0068] refer to Figure 9 and Figure 10 After one protective plate 1 is fixed and the other protective plate 1 is moved to the adjacent designated position, it is initially supported by the support device 6. During this process, the position of the protective plate 1 is adjusted to ensure that the protective plate 1 can be smoothly connected to the fixed protective plate 1 through the connecting device 8.

[0069] Specifically, the connecting device 8 includes an assembly groove 81, a locking mechanism 82, a reverse locking mechanism 83, a mounting plate 84, a lock hole 85, and a buckle 86. The sliding plate 1 2 has an assembly groove 81 on its side wall away from the sliding plate 2 3. The locking mechanism 82 is provided in the assembly groove 81. The locking mechanism 82 can prevent adjacent protective plates 1 from detaching and connect adjacent protective plates 1. The mounting plate 84 is installed at the opening of the assembly groove 81. The mounting plate 84 has a number of lock holes 85 distributed at equal intervals. The sliding plate 2 3 has a buckle 86 on its side wall away from the sliding plate 1 2, which corresponds to the position of the lock hole 85. The buckle 86 of the sliding plate 2 3 in the protective plate 1 extends into the lock hole 85 of the sliding plate 1 2 in the adjacent protective plate 1 and is locked with the locking mechanism 82 in the sliding plate 1 2 in the adjacent protective plate 1 to realize the connection between the protective plates 1.

[0070] The assembly slot 81 is also equipped with a deadbolt mechanism 83, which is used to lock the locking mechanism 82, restricting unauthorized personnel from opening the connecting device 8 and disconnecting the connection between the protective plates 1.

[0071] refer to Figure 11 , Figure 12 and Figure 13The locking mechanism 82 includes a locking shaft 821, a locking knob 822, a third gear 823, a gear rod 824, a fourth gear 825, a locking connecting rod 826, a parallel rod 827, a sliding groove 828, a sliding shaft 829, a locking slide groove 8210, a locking slider 8211, a locking pin 8212, a locking plate 8213, a positioning hole 8214, a return spring 8215, a spring washer 8216, and a linkage rod 8217, and an assembly slot. A locking shaft 821 is symmetrically and rotatably installed through the side wall of 81. The locking shaft 821 corresponds to the position of the lock hole 85. A locking knob 822 is installed on the opposite end of the two locking shafts 821 corresponding to one of the lock holes 85. The locking knob 822 is placed outside the assembly groove 81. When connecting two adjacent protective plates 1, after the buckle 86 is inserted into the corresponding lock hole 85, the locking knob 822 needs to be rotated so that the locking mechanism 82 locks the buckle 86.

[0072] Specifically, gear 3 823 is installed at one end of each of the two locking shafts 821, gear rod 824 is installed on the inner wall of the mounting plate 84 away from the mounting groove 81, and gear 4 825 is rotatably installed at one end of gear rod 824. The two symmetrical gear 3 823 mesh with gear 4 825.

[0073] Turning one of the locking knobs 822 causes the locking shaft 821 connected to it to rotate, and at the same time, the gear 3 823 on it will also rotate. With the assistance of the meshing of the gear 4 825, the gear 3 823 achieves the reverse rotation of the other gear 3 823 through meshing with the gear 4 825, that is, the locking shaft 821 of the gear 3 823 also rotates synchronously.

[0074] A locking link 826 is mounted on the locking shaft 821, and the middle part of the locking link 826 is mounted on the locking shaft 821. Two locking links 826 corresponding to one of the lock holes 85 are distributed in a crisscross pattern. A horizontally arranged parallel rod 827 is hinged to the end of the locking link 826 near the mounting plate 84. A sliding groove 828 is provided on the end of the parallel rod 827 away from the mounting plate 84. A sliding shaft 829 is rotatably provided on the end of the locking link 826 away from the mounting plate 84, and the sliding shaft 829 slides in the sliding groove 828.

[0075] Rotating the locking knob 822 causes the locking shaft 821 to rotate. At this time, under the meshing of the two symmetrical gears 3 823 and gear 4 825, the rotation directions of the two gears 3 823 are opposite, and the rotation directions of the two locking shafts 821 mounted on the gears 3 823 are opposite, causing the locking connecting rod 826 on the locking shaft 821 to rotate in opposite directions. At the same time, the end of the locking connecting rod 826 near the mounting plate 84 rotates relative to the parallel rod 827, and the sliding shaft 829 on the end of the locking connecting rod 826 away from the mounting plate 84 slides in the sliding groove 828, making the distance between the parallel rods 827 connected to the locking connecting rod 826 smaller.

[0076] After the locking knob 822 is turned to reduce the distance between the two parallel rods 827, a locking groove 8210 is provided on the parallel rod 827 near the mounting plate 84 to lock the buckle 86. A locking slider 8211 is slidably installed on the locking groove 8210. Locking pins 8212 are respectively provided at the ends of the two locking sliders 8211 that are close to each other to lock the buckle 86. The upper and lower ends of the lock hole 85 are provided with symmetrically distributed lock plates. 8213, The locking plate 8213 has a positioning hole 8214, and the locking pin 8212 slides in the positioning hole 8214. The locking pin 8212 is provided with a spring washer 8216, and the spring washer 8216 is between the parallel rod 827 and the locking plate 8213. The locking pin 8212 is also fitted with a return spring 8215, and one end of the return spring 8215 is installed on the spring washer 8216, and the other end is installed on the locking plate 8213.

[0077] The reduced distance between the two parallel rods 827 reduces the distance between the locking pins 8212 on the locking slider 8211 connected to the two parallel rods 827. At the same time, the sliding restriction of the locking slider 8211 in the locking groove 8210 and the sliding restriction of the locking pin 8212 in the positioning hole 8214 ensure that the locking pin 8212 can only move up and down. Finally, the locking pin 8212 locks the protruding part of the buckle 86, and the two connected protective plates 1 are in a locked state.

[0078] In order to synchronously engage the locking pins 8212 in other lock holes 85 with the buckles 86, this application provides two linkage rods 8217 distributed front and rear in the assembly groove 81. All parallel rods 827 located on the same vertical plane are installed on the same linkage rod 8217, which simultaneously controls the corresponding parallel rods 827 in other lock holes 85, so that the locking mechanism 82 in other lock holes 85 restricts the corresponding buckles 86. In order to maintain the locking of the buckles 86 by the locking pins 8212 in each lock hole 85, the locking state needs to be maintained by the anti-locking mechanism 83.

[0079] refer to Figure 14 The locking mechanism 83 includes a mounting hole 831, a sliding bar 832, a locking spring 833, a locking block 834, and a locking button 835. The mounting hole 831 is provided on the side wall of the sliding plate 2, and the mounting hole 831 is located between the locking shaft 821 and the linkage rod 8217.

[0080] After the locking mechanism 82 completes the restriction on the latch 86, in order to lock the locking mechanism 82, the anti-locking mechanism 83 in the mounting hole 831 can restrict the movement of the linkage rod 8217, thereby limiting the distance between the parallel rods 827. The distance between the locking pins 8212 remains fixed, and the locking pins 8212 cannot release the latch 86, thus achieving the purpose of anti-locking.

[0081] Specifically, a sliding strip 832 is slidably installed in the mounting hole 831. A locking spring 833 is fitted on the sliding strip 832, and one end of the locking spring 833 is in close contact with the side wall of the assembly groove 81. A locking block 834 is provided at the end of the sliding strip 832 near the assembly groove 81. The locking block 834 is connected to the other end of the locking spring 833. The locking spring 833 causes the sliding strip 832 to slide towards the assembly groove 81. A locking button 835 is threadedly connected to the end of the sliding strip 832 away from the locking block 834. The locking button 835 is rotatably installed in the mounting hole 831 in a detachable manner. The mounting hole 831 is located on the side where the rotating handle 711 is located, which facilitates the simultaneous removal of the rotating handle 711 and the locking button 835.

[0082] When the protective plates 1 are connected, when the locking pin 8212 is locked, the linkage rod 8217 contacts the inclined surface of the anti-locking block 834 and then slides past the anti-locking block 834. At this time, the anti-locking block 834 moves towards the assembly groove 81 under the action of the anti-locking spring 833, jamming the linkage rod 8217 and restricting the linkage rod 8217 from moving back. At this time, the locking of the locking mechanism 82 is completed. At this time, the anti-locking button 835 can be removed to prevent unauthorized personnel from arbitrarily unlocking the connection between the protective plates 1. When it is necessary to release the anti-lock of the locking mechanism 82, rotate the anti-locking button 835 onto the sliding bar 832 and pull the anti-locking button 835 away from the assembly groove 81. The anti-locking block 834 will then release the restriction on the linkage rod 8217, thereby releasing the lock on the locking mechanism 82. At this time, rotate the locking knob 822, and the locking mechanism 82 can release the restriction on the buckle 86, and the connected protective plates 1 can be disengaged.

[0083] Looking back Figure 1 and Figure 2 A horizontally extending fixing strip 22 is provided on one side wall of the upper end of the sliding plate 2, and a fixing groove 21 is provided on the other side wall of the upper end of the sliding plate 2 to engage with the fixing strip 22. The fixing groove 21 and the fixing strip 22 are positioned correspondingly. During transportation, the sliding plates can be stacked together, and the fixing strip 22 and the fixing groove 21 restrict the sliding plates from sliding.

[0084] The sliding plate 2 has horizontally extending guide strips 31 on both the front and rear sides. The upper front and rear side walls of the sliding plate 1 have guide grooves 23 that slide in cooperation with the guide strips 31. The cooperation between the guide strips 31 and the guide grooves 23 can stabilize the sliding between the sliding plate 1 and the sliding plate 2.

[0085] The implementation principle of this invention is as follows:

[0086] (1): Slide the adjusting column 46 downward to extend the sliding cylinder 44. At this time, the sliding cylinder 44 can remain extended under the restriction of the retraction unit 5. That is, the rotating wheel 410 is in contact with the ground. When pushing the protective plate 1 to move, the rotating wheel 410 can be driven to rotate in all directions through the turntable 47, which facilitates the movement of the protective plate 1. When it is necessary to retract the rotating wheel 410, push the adjusting column 46 to move downward again so that the sliding cylinder 44 can drive the rotating wheel 410 to move upward and reset with the cooperation of the retraction unit 5.

[0087] (2): By rotating the rotating plate 63 and the support frame 64, the end of the support frame 64 that is close to the fixed plate 66 is placed on the ground, and the other end of the support frame 64 is stuck. When encountering a hard ground, the fixed plate 66 is laid flat on the ground, and the rivet passes through the fixing hole 67 and is driven into the ground. At this time, the support device 6 fixes the protective plate 1.

[0088] (3): By rotating the fixed cone 73, the fixed cone 73 extends out through the threaded engagement between the cylinder 72 and the fixed cone 73. When the fixed cone 73 extends out, it can be inserted into the pre-set hole in the soft ground.

[0089] (4): The buckle 86 of the sliding plate 2 3 in the protective plate 1 extends into the lock hole 85 of the sliding plate 1 in the adjacent protective plate 1 and is locked with the locking mechanism 82 in the sliding plate 2 in the adjacent protective plate 1 to realize the connection between the protective plates 1, and the locking mechanism 83 restricts the locking mechanism 82 to realize the fixation between the protective plates 1.

[0090] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A safety protection device for construction work, comprising a protection panel (1), characterized in that: The guard plate (1) comprises a sliding plate one (2) and a sliding plate two (3), and the sliding plate one (2) and the sliding plate two (3) are slidably connected, the lower end of the sliding plate one (2) and the sliding plate two (3) is respectively provided with a supporting device (6), a fixing device (7) and a moving device (4), the fixing device (7) is between the supporting device (6) and the moving device (4), and the two moving devices (4) are respectively arranged on the opposite sides of the sliding plate one (2) and the sliding plate two (3), and the sidewalls of the sliding plate one (2) and the sliding plate two (3) are jointly provided with a connecting device (8); The moving device (4) comprises a circular groove (41), a telescopic spring (42), a fixed sleeve (43), a sliding cylinder (44), an adjusting hole (45), an adjusting column (46), a rotating disc (47), a wheel frame (48), an axle (49), a rotating wheel (410) and a retracting unit (5), the lower end of the sliding plate one (2) and the sliding plate two (3) is provided with the circular groove (41), the telescopic spring (42) is installed on the circular groove (41), the fixed sleeve (43) is further installed on the periphery of the circular groove (41), the hollow sliding cylinder (44) is sleeved in the fixed sleeve (43), the sliding cylinder (44) slides in the fixed sleeve (43), one end of the telescopic spring (42) is connected to the upper end of the sliding cylinder (44), the adjusting hole (45) is formed in the sidewall of the fixed sleeve (43), the adjusting column (46) is arranged on the sidewall of the sliding cylinder (44), and the adjusting column (46) is slidably arranged in the adjusting hole (45), the rotating disc (47) is rotatably installed at the lower end of the sliding cylinder (44), the wheel frame (48) is symmetrically installed at the lower end of the rotating disc (47), the axle (49) is rotatably installed on the wheel frame (48) and penetrates through the wheel frame (48), the rotating wheel (410) is installed on the axle (49), and the retracting unit (5) matched with the circular groove (41) is arranged in the sliding cylinder (44); The retracting unit (5) comprises a connecting column (51), a limiting ring (52), a limiting cylinder (53), a square groove (54), a first spring (55), a limiting slider (56), a limiting hook (57), a cross-shaped hole (58), a second spring (59), a reset clamping column (510), a reset hole (511) and a synchronous ring (512), the lower end of the middle protruding part of the circular groove (41) is provided with the connecting column (51), the lower end sidewall of the connecting column (51) is sleeved with the limiting ring (52), the upper end of the limiting ring (52) is provided with a chamfer, so that the upper end of the limiting ring (52) is flush with the connecting column (51), the lower end of the connecting column (51) is provided with the limiting cylinder (53), and the limiting cylinder (53) is below the limiting ring (52), the diameter of the limiting cylinder (53) is greater than that of the limiting ring (52), and the upper end of the limiting cylinder (53) is also provided with a chamfer, so that the upper end of the limiting cylinder (53) is flush with the connecting column (51). The connecting column (51), the limiting ring (52) and the limiting cylinder (53) are in sliding fit with the inside of the sliding cylinder (44), a plurality of square grooves (54) are arranged on the inner wall of the sliding cylinder (44) in the circumferential direction, the square groove (54) is slidably provided with a limiting sliding block (56), a first spring (55) is arranged between the side of the limiting sliding block (56) away from the connecting column (51) and the square groove (54), one end of the first spring (55) is connected with the limiting sliding block (56), and the limiting sliding block (56) slides in the square groove (54), the end of the limiting sliding block (56) close to the connecting column (51) is provided with an inclined surface inclined to the chamfer direction of the limiting cylinder (53), the other end of the limiting sliding block (56) is provided with a limiting hook (57), the limiting hook (57) is sleeved in the hollow part of the middle of the first spring (55) and does not contact the first spring (55), and the side of the limiting hook (57) away from the limiting sliding block (56) is provided with a protrusion with an inclined surface downward; The bottom of the square groove (54) is further provided with a cross intersection hole (58), the horizontal section of the cross intersection hole (58) is communicated with the square groove (54), the bottom of the vertical section of the cross intersection hole (58) is provided with a second spring (59), the upper end of the second spring (59) is connected with a reset clamping column (510), the middle of the reset clamping column (510) is provided with a reset hole (511) facing the limiting sliding block (56), the upper side of the sliding cylinder (44) is provided with a synchronous ring (512), the upper end of the reset clamping column (510) penetrates through the upper side of the sliding cylinder (44) and is connected to the synchronous ring (512), and the synchronous ring (512) is in abutting fit with the top of the circular groove (41).

2. A construction safety shield according to claim 1, wherein: The connecting device (8) comprises an assembly groove (81), a locking mechanism (82), an anti-lock mechanism (83), a mounting plate (84), a lock hole (85) and a buckle (86), the side wall of the sliding plate one (2) away from the sliding plate two (3) is provided with an assembly groove (81), the assembly groove (81) is provided with a locking mechanism (82), the assembly groove (81) is further provided with an anti-lock mechanism (83), and the anti-lock mechanism (83) is used for limiting the locking of the locking mechanism (82), the opening of the assembly groove (81) is provided with a mounting plate (84), the mounting plate (84) is provided with a plurality of lock holes (85) distributed at equal intervals, and the side wall of the sliding plate two (3) away from the sliding plate one (2) is provided with a buckle (86) corresponding to the position of the lock hole (85).

3. A construction safety shield according to claim 1, wherein: The supporting device (6) comprises an assembly groove (61), a rotating shaft (62), a rotating plate (63), a support frame (64), a clamping protrusion (65), a fixing plate (66), a fixing hole (67), an adjusting block (68) and an elastic sliding block (69), the front and rear end faces of the lower ends of the sliding plate one (2) and the sliding plate two (3) are both provided with the assembly groove (61), the lower end of the assembly groove (61) is provided with the rotating shaft (62), one end of the rotating shaft (62) is rotationally connected with the rotating plate (63), the other end of the rotating plate (63) is hingedly connected with the middle part of the support frame (64), the upper end of the support frame (64) is provided with the clamping protrusion (65), the lower end of the support frame (64) is hingedly connected with the fixing plate (66), the fixing plate (66) is provided with two penetrating fixing holes (67), the upper half of the assembly groove (61) is provided with the adjusting blocks (68) which are arranged at equal intervals, and the adjusting blocks (68) are downwardly inclined, the upper ends of the opposite two side walls of the assembly groove (61) are both provided with the elastic sliding blocks (69), and the front and rear ends of the opposite side of the two elastic sliding blocks (69) are both provided with inclined surfaces which abut against the clamping protrusion (65).

4. A construction safety shield according to claim 1, wherein: The fixing device (7) comprises an assembly port (71), a cylinder (72), a fixing sharp cone (73), a limiting hole (74), a fixing column (75), a gear one (76), a limiting column (77), a limiting pin (78), a gear shaft (79), a gear two (710) and a rotating handle (711), the lower ends of the sliding plate one (2) and the sliding plate two (3) are respectively provided with the assembly port (71), the upper end of the assembly port (71) is provided with the cylinder (72), the inside of the cylinder (72) is threadedly connected with the fixing sharp cone (73) which is hollow, the side face of the fixing sharp cone (73) is provided with the limiting hole (74), the inside of the fixing sharp cone (73) is slidably sleeved with the limiting column (77), the upper end of the limiting column (77) is provided with the gear one (76), the side face of the limiting column (77) is provided with the limiting pin (78), the limiting pin (78) is slidably arranged in the limiting hole (74) in the side face of the fixing sharp cone (73), the upper end of the assembly port (71) is further provided with the fixing column (75), the lower end of the fixing column (75) is rotationally connected with the upper end of the limiting column (77), the side wall of the fixing column (75) is rotationally installed with the gear shaft (79), the gear shaft (79) is installed with the gear two (710), the gear two (710) is engaged with the gear one (76), and the end, away from the fixing column (75), of the gear shaft (79) is installed with the rotating handle (711).

5. A construction safety shield according to claim 2, wherein: Said locking mechanism (82) includes locking shaft (821), locking knob (822), gear three (823), gear bar (824), gear four (825), locking link (826), parallel link (827), sliding slot (828), sliding shaft (829), locking sliding slot (8210), locking slider (8211), locking catch (8212), lock plate (8213), positioning hole (8214), return spring (8215), spring backing plate (8216) and linkage rod (8217), the symmetrical through rotation is installed on the side wall of assembly groove (81) locking shaft (821), locking shaft (821) and lock hole (85) position corresponds, wherein one lock hole (85) corresponding two locking shaft (821) opposite ends are provided with locking knob (822), locking knob (822) is placed in assembly groove (81) outside, and the two locking shaft (821) opposite ends are provided with gear three (823), the inner wall of assembly groove (81) away from mounting plate (84) is provided with gear bar (824), one end of gear bar (824) is rotatably provided with gear four (825), and the front and back symmetrical two gear three (823) are engaged with gear four (825); Said locking shaft (821) is provided with locking link (826), and the middle part of locking link (826) is installed on locking shaft (821), the front and back of two locking links (826) corresponding to one lock hole (85) are distributed, and the end of the locking link (826) close to the mounting plate (84) is hingedly connected with the horizontally arranged parallel link (827), the sliding slot (828) is formed in the end of the parallel link (827) away from the mounting plate (84), the sliding shaft (829) is rotatably arranged on the end of the locking link (826) away from the mounting plate (84), and the sliding shaft (829) slides in the sliding slot (828); The parallel rod (827) is provided with a locking sliding groove (8210) near one end of the mounting plate (84), the locking sliding groove (8210) is provided with locking sliding blocks (8211) which are slidably installed, the locking sliding blocks (8211) are provided with locking pins (8212) at the ends which are close to each other, the locking holes (85) are provided with lock plates (8213) which are symmetrically distributed at the upper and lower ends, the lock plates (8213) are provided with positioning holes (8214), the locking pins (8212) slide in the positioning holes (8214), the locking pins (8212) are provided with spring pads (8216) which are between the parallel rod (827) and the lock plates (8213), the locking pins (8212) are further provided with return springs (8215), one end of the return springs (8215) is installed on the spring pads (8216), and the other end is installed on the lock plates (8213), the assembly groove (81) is provided with two linkage rods (8217) which are distributed in front and back, and all the parallel rods (827) located in the same vertical plane are installed on the same linkage rod (8217).

6. A construction safety shield according to claim 5, wherein: The anti-lock mechanism (83) comprises a mounting hole (831), a sliding bar (832), an anti-lock spring (833), an anti-lock block (834) and an anti-lock knob (835), the side wall of the sliding plate one (2) is provided with the mounting hole (831), and the mounting hole (831) is located between the locking shaft (821) and the linkage rod (8217), the mounting hole (831) is slidably provided with the sliding bar (832), the sliding bar (832) is provided with the anti-lock spring (833), one end of the anti-lock spring (833) is close to the side wall of the assembly groove (81), the sliding bar (832) is provided with the anti-lock block (834) at one end which is close to the assembly groove (81), the anti-lock block (834) is connected to the other end of the anti-lock spring (833), the sliding bar (832) is provided with the anti-lock knob (835) at one end which is away from the anti-lock block (834) in a threaded manner, and the anti-lock knob (835) is rotatably installed in the mounting hole (831) in a detachable manner.

7. A construction safety shield according to claim 1, wherein: The side wall of one side of the upper end of the sliding plate one (2) is further provided with a horizontally extending fixing strip (22), the side wall of the other side of the upper end of the sliding plate one (2) is provided with a fixing groove (21) which is clamped with the fixing strip (22), and the fixing groove (21) corresponds to the position of the fixing strip (22); The sliding plate two (3) is provided with horizontally extending guide strips (31) on the front and back sides, and the front and back side walls of the upper end of the sliding plate one (2) are provided with guide grooves (23) which are slidably matched with the guide strips (31).

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