Road construction protection device

Abstract

The present invention relates to a road construction protection device. The present invention is designed with a protective baffle structure that is easy to fold and unfold. In the folded state, the entire device is small in size and easy to transfer and transport. In the unfolded state, it can form a baffle plate, which serves as a splicing combination unit. The end of each splicing combination unit is connected to form a baffle protection. The locking plug plate and the reinforcement plug plate provided in the expansion plate can be pulled by the locking rod so that they extend from the expansion plate. The locking plug plate can be plugged into the adjacent expansion plate and connected to the adjacent expansion plate as a whole. It will no longer rotate and fold. At the same time, the locking plug plate synchronously pushes the reinforcement plug plate to extend from the expansion plate and support it on the ground, thereby further supporting the expansion plate and making it more stable. The locking pull rod cooperates with the pulley and the hook to quickly tighten and fix the locking plug plate, making the installation and disassembly of the entire device more convenient and quick.

Description

Technical Field

[0001] The present invention relates to the technical field of construction protection, in particular to a road construction protection device. Background Art

[0002] With the development of society, infrastructure is also constantly being improved and constructed, among which the improvement and enhancement of road traffic is one of the important tasks. During road construction or road maintenance and repair, due to the occupation of public areas, the construction area needs to be isolated. Usually, protective devices such as fences and guardrails are used to protect and warn the construction area to increase the safety of road construction. The existing protective devices are relatively simple, mostly constructed with iron frames and iron sheets. In order to adapt to the area of ​​the protection area, the materials used are mostly wide or long in size, which is not convenient for transportation and transfer. Welding and other work are also required during construction. The construction is troublesome and difficult to disassemble and assemble quickly and conveniently. It is also not convenient to dismantle later. The materials after dismantling are easily damaged and have low reusability, which easily leads to waste of resources. Therefore, there is a need for a protective device that is easy to transport, install and disassemble to meet the current construction protection needs during road construction. Summary of the Invention

[0003] The foldable frame is constructed by a plurality of steps and a plurality of locking plates are installed on the foldable frame to ensure that the foldable frame can be fixed to the ground with a plurality of locking plates.

[0004] The hooks are arranged at equal intervals and are arranged on a fixed position between the folding plate and the buckle, and the locking plate is slidably mounted on the rotating plate and the expansion plate, and the locking plate is respectively provided with a rope connecting slot at the upper and lower positions of the front side of the locking plate, and a hook slot is provided in the middle. The upper and lower positions of the rear side of the locking plate are fixedly connected with the expansion rope, and the expansion rope corresponds to the rope connecting slot one by one with the expansion rope. The end of the rope is fixedly connected to an expansion connector. The locking plug installed inside the rotating plate and the expansion plate is fixedly connected to the rope connection slot through the expansion connector to complete the series connection. The locking plug located at the end of the series is fixedly connected to the rope connection slot by a screw. By pulling the locking pull rod, all the locking plugs in the series can be pulled synchronously, so that they slide out and plug into the adjacent expansion plate, connecting all the expansion plates and the rotating plate into one, making them unable to rotate or fold. When two protective devices are combined in series, the expansion plate at the end of the first protective device is plugged into the buckle fixing slot on the main frame of the other protective device. Pulling the locking pull rod pulls out the connected locking plug, and hanging the locking pull rod on the hook can connect the two protective devices together. At the same time, the hook slot on the pulled out locking plug is hooked on the parallel hook or the vertical hook to further ensure the secure connection. The hook slot hooked on the parallel hook forms a parallel enclosure, and the hook on the vertical hook forms a right-angle enclosure. The extension connector is fixedly connected to the rope connection slot by a screw, and a first pushing slope is provided at the lower end of the locking plug plate, and a reinforcement plug plate is slidably fitted on the first pushing slope to press the reinforcement plug plate, and the reinforcement plug plate is slidably fitted and installed at the lower end of the extension plate. When the locking plug plate slides horizontally in the extension plate, it will synchronously press the reinforcement plug plate to slide downward, so that the reinforcement plug plate extends from the lower end of the extension plate and supports it on the ground, forming a support for the extension plate to ensure its firmness. A warning light is installed on the top of the main frame, and the warning light adopts a solar light that can emit flashing light to serve as a reminder and warning.

[0005] As a preferred solution of the present invention, the side of the rotating plate is fixedly connected to a rotating shaft, and a rotating plate embedded groove is opened inside. The position on the rotating plate surface corresponding to the rotating plate embedded groove is hollowed out, so that the locking plug plate can be observed, and the extended connector fixed with screws on the locking plug plate is convenient to disassemble. The rotating shaft is rotatably inserted into the rotating connection hole, and the locking plug plate slides horizontally in the rotating plate embedded groove and can be extended from the side opening of the rotating plate embedded groove.

[0006] As a preferred solution of the present invention, the expansion board is provided with an expansion board embedded slot, a locking plug-in slot, and a reinforcement plug-in slot. The position on the expansion board surface corresponding to the embedded slot of the expansion board is hollowed out, so that the locking plug-in plate can be observed, and the expansion connector connected by screws on the locking plug-in plate can be conveniently disassembled. A first spring piece is installed inside the locking plug-in slot. The embedded slot of the expansion board and the locking plug-in slot are connected at the upper and lower positions through a rope threading hole. The locking plug-in plate slides horizontally in the embedded slot of the expansion board and can extend from the side opening of the embedded slot of the expansion board and be correspondingly plugged into the locking plug-in slot opened on the adjacent expansion board. When the locking plug-in plate in the adjacent expansion board is After the plug plate is inserted into the locking slot, it will press on the first elastic piece. After the pull on the locking plug plate is released, the locking plug plate can be popped out of the locking slot under the elastic force of the first elastic piece. The extension rope slides through the rope threading hole and extends out of the extension plate through the locking slot, making it convenient for the extension connector to be connected to the adjacent locking plug plate. The reinforcement plug plate slide slot is located below the embedded slide slot of the extension plate and is connected to each other. A second elastic piece is installed above the reinforcement plug plate slide slot at the bottom of the embedded slide slot of the extension plate. The reinforcement plug plate sliding buckle is installed in the reinforcement plug plate slide slot and slides vertically therein to extend from the bottom of the extension plate, and the reinforcement plug plate presses on the second elastic piece.

[0007] As a preferred solution of the present invention, the locking pull rod includes a pull rod, and both ends of the pull rod are fixedly connected to a pulling rope, and the end of the pulling rope is fixedly connected to a pull rod connector, the pull rod connector has the same structure as the extension connector, and is correspondingly installed in the rope connecting slot and fixedly connected by screws. The pulling ropes located at one end of the pull rod are two parallel ones and a gap is reserved between them. When the locking pull rod is hung on the hook, the hook can be located in the gap between the two parallel pulling ropes, thereby making the connection more stable.

[0008] As a preferred solution of the present invention, the main body of the reinforcement plug plate is T-shaped and a second pushing inclined surface is provided at its upper end, and the second pushing inclined surface presses against the first pushing inclined surface. A rebound pressure rod is fixedly connected to the side surface of the upper end of the reinforcement plug plate, and a plug is fixedly connected to the lower end. The rebound pressure rod presses against the second elastic piece, and the second elastic piece has an upward elastic force on the reinforcement plug plate. When the reinforcement plug plate is pushed downward by the locking plug plate, the second elastic piece will be compressed. After the locking plug plate is reset, the reinforcement plug plate will also be reset under the action of the second elastic piece and retract into the expansion plate.

[0009] The beneficial effects of the present invention are as follows: the present invention rotatably installs a rotating plate on the main frame and connects the expansion plates in series via hinges to form a protective device that is easy to fold and unfold. In the folded state, the entire device is small and easy to transfer and transport. In the unfolded state, it can form a fence plate, which is a spliced ​​combination unit. The end of each spliced ​​combination unit is connected to form a fence protection. The locking plug plate and the reinforcement plug plate set in the expansion plate can be pulled by the locking rod when all the expansion plates are fully unfolded, so that they can be extended from the expansion plate. The locking plug plate can be inserted into the adjacent expansion plate and connected to the adjacent expansion plate as a whole, and will no longer rotate and fold. At the same time, the locking plug plate synchronously pushes the reinforcement plug plate to extend from the expansion plate and support it on the ground, thereby further supporting the expansion plate and making it more stable. The locking pull rod cooperates with the pulley and hook to quickly tighten and fix the locking plug plate, making the installation and disassembly of the entire device more convenient and quick, and can adapt to the protection needs of construction areas of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention in an expanded state;

[0011] Figure 2 This is a schematic diagram of the overall structure of the present invention in a folded state;

[0012] Figure 3 This is a schematic diagram of the main frame structure of the present invention;

[0013] Figure 4 This is a cross-sectional view of the main frame structure of the present invention;

[0014] Figure 5 It is a schematic diagram of the rotating plate structure of the present invention;

[0015] Figure 6 A half-sectional view of the internal structure of the rotating plate of the present invention;

[0016] Figure 7 A half-sectional view of the internal structure of the expansion board of the present invention;

[0017] Figure 8This is a cross-sectional view of the locking plate of the present invention installed inside the expansion plate;

[0018] Figure 9 This is a schematic diagram of the locking plate and the reinforcement plate in the present invention in the coordinated state;

[0019] Figure 10 This is an enlarged schematic diagram of the joint between the locking plate and the reinforcement plate of the present invention;

[0020] Figure 11 This is a schematic diagram of the locking rod structure of the present invention;

[0021] Figure 12 It is a schematic diagram of the assembled use state of the present invention.

[0022] In the figure: 1 main frame, 101 base, 102 folding storage slot, 103 rotating connection hole, 104 buckle fixing slot, 105 parallel hanging buckle, 106 vertical hanging buckle, 107 pulley, 108 hook, 109 parallel plug-in slot, 2 rotating plate, 201 rotating shaft, 202 rotating plate embedded slide, 3 expansion plate, 301 expansion plate embedded slide, 302 locking plug-in slot, 303 rope threading hole, 304 first spring Plate, 305 reinforcement plate slide, 306 second spring plate, 4 locking plates, 401 rope connection slot, 402 hook slot, 403 extension rope, 404 extension connector, 405 first pushing slope, 5 locking pull rod, 501 pull rod, 502 pulling rope, 503 pull rod connector, 6 hinge, 7 warning light, 8 reinforcement plate, 801 second pushing slope, 802 rebound pressure rod, 803 plug. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figures 1 to 12 As shown, a road construction protection device of the present invention mainly includes a main frame 1, a rotating plate 2, and an expansion plate 3. The rotating plate 2 and the expansion plate 3 are respectively installed with a locking plug plate 4 with sliding snap-fitting. The upper and lower positions of the front side of the locking plug plate 4 are respectively provided with rope connection slots 401, and the middle part is provided with a hook slot 402. The upper and lower positions of the rear side of the locking plug plate 4 are fixedly connected with an extension rope 403. The extension rope 403 corresponds to the rope connection slot 401 one by one, and the end of the extension rope 403 is fixedly connected with an extension connector 404. The locking plug plates 4 installed inside the rotating plate 2 and the expansion plate 3 are fixedly connected in the rope connection slot 401 through the extension connector 404 to complete the series connection. The locking plug plate 4 at the end of the series is fixedly connected with a locking rod 5 by a screw.

[0025] The bottom of the main frame 1 is a base 101, which can be fixed to the ground by connecting the main frame 1 to the connection hole on the base 101 through the expansion bolt. The upper frame of the base 101 is divided into a folding storage slot 102 and a buckle fixing slot 104. The inner side of the buckle fixing slot 104 is fixedly connected with a parallel hook 105 and a vertical hook 106. The openings of the parallel hook 105 and the vertical hook 106 are perpendicular to each other, and the opening of the parallel hook 105 is facing the corresponding buckle fixing slot 104. A parallel plug-in slot 109 is provided on the side wall. The width and height of 109 are both greater than the thickness and length of the expansion plate 3, so that the expansion plate 3 can be inserted into the snap fixing groove 104 through the plug-in slot 109. A pulley 107 and a hook 108 are fixedly connected to the partition between the folding storage groove 102 and the snap fixing groove 104 on one side of the snap fixing groove 104. There are two pulleys 107, one above and one below, and the spacing between them is the same as the spacing between the expansion ropes 403 at both ends of the locking plug plate 4. The hooks 108 correspond to the pulleys 107, and there are two rows, one above and one below, with multiple hooks in each row and evenly arranged at equal intervals. The bottom and top inner corners of the folding storage slot 102 are provided with rotating connection holes 103. The rotating plate 2 is fixedly connected to the rotating shaft 201 through the side and is rotated and inserted into the rotating connection hole 103. The rotating plate 2 is provided with a rotating plate embedded slide groove 202. The rotating plate 2 is hollowed out at the position corresponding to the rotating plate embedded slide groove 202 on the plate surface. When the protective device is built, this hollow surface is located on the inner side of the enclosure. The locking plug plate 4 can be observed through this hollow part, and the extended connector 404 fixed with the screws on the locking plug plate 4 is convenient for disassembling. It slides horizontally in the built-in slide groove 202 of the rotating plate and can extend from the side opening of the built-in slide groove 202 of the rotating plate. The side of the rotating plate 2 is rotatably connected to the expansion plate 3 through the hinge 6. The expansion plates 3 are connected in series through the hinge 6. The hinges 6 on both sides of each expansion plate 3 connected to the adjacent expansion plates 3 are not on the same side, so that all the expansion plates 3 are conveniently folded and fitted together. The expansion plate 3 and the rotating plate 2 can be folded together and stored in the folding storage groove 102 through the hinge 6, thereby reducing the volume of the protective device and facilitating transfer.

[0026] The expansion board 3 is provided with an expansion board embedded slot 301, a locking plug slot 302, and a reinforcement plug slot 305. The surface of the expansion board 3 is hollowed out at the position corresponding to the expansion board embedded slot 301. When building the protective device, this hollow surface is located on the inner side of the enclosure. The locking plug plate 4 can be observed through this hollow area, and the expansion connector 404 fixedly connected with the screws on the locking plug plate 4 is convenient to disassemble. A first spring piece 304 is installed inside the locking plug slot 302. The upper and lower positions of the expansion board embedded slot 301 and the locking plug slot 302 are connected by a rope threading hole 303. The locking plug plate 4 slides horizontally in the expansion board embedded slot 301, and can extend from the side opening of the expansion board embedded slot 301 and be plugged into the corresponding When the locking plug-in slot 302 is opened on the adjacent expansion board 3, the locking plug-in plate 4 in the adjacent expansion board 3 is inserted into the locking plug-in slot 302, it will press on the first elastic piece 304. After the pull on the locking plug-in plate 4 is released, the locking plug-in plate 4 can be popped out of the locking plug-in slot 302 under the elastic force of the first elastic piece 304. The expansion rope 403 slides through the rope hole 303 and extends out of the expansion board 3 through the locking plug-in slot 302, making it convenient for the expansion connector 404 to be connected to the adjacent locking plug-in plate 4. The reinforcement plug-in plate slide groove 305 is located below the embedded slide groove 301 of the expansion board and is connected to each other. A second elastic piece 306 is installed above the reinforcement plug-in plate slide groove 305 at the bottom of the embedded slide groove 301 of the expansion board.

[0027] The locking rod 5 includes a rod 501, and both ends of the rod 501 are fixedly connected to pulling ropes 502, and the ends of the pulling ropes 502 are fixedly connected to rod connectors 503. The rod connectors 503 have the same structure as the extension connector 404, and are correspondingly installed in the rope connection slot 401 and fixedly connected by screws. The pulling ropes 502 at one end of the rod 501 are two parallel ones with a gap reserved between them. When the locking rod 5 is hung on the hook 108, the hook 108 can be located in the gap between the two parallel pulling ropes 502, thereby making the connection more stable. By pulling the locking rod 5, all the locking plates 4 in series can be pulled synchronously, causing them to slide out and insert into the adjacent expansion plates 3, connecting all the expansion plates 3 and the rotating plate 2 into one, making them unable to rotate or fold. When two protective devices are combined in series, the expansion plate 3 at the end of the first protective device is inserted into the buckle fixing groove 104 on the main frame 1 of the other protective device. The locking rod 5 is pulled out to pull out the connected locking plate 4. To keep the locking rod 5 in a taut state, after being tightened, the locking rod 5 is selected and hooked onto the hook 108 at an appropriate position, thereby connecting the two protective devices together. At the same time, the hook slot 402 on the pulled out locking plate 4 is correspondingly hooked onto the parallel hook 105 or the vertical hook 106 to further ensure the secure connection. The hook slot 402 hooked on the parallel hook 105 forms a parallel enclosure, and the hook slot 402 hooked on the vertical hook 106 forms a right-angle enclosure. Depending on the area to be fenced, multiple protective devices can be combined to complete the enclosure and protection of the corresponding area. The expansion connector 404 is fixedly connected to the rope connection slot 401 by screws, and the hinge 6 is fixedly connected to the rotating plate 2 and the expansion plate 3 by screws, allowing for convenient installation and removal of the expansion plate 3 and the locking plate 4 as needed. The length of a single protective device in the expanded state can be adjusted to suit different usage requirements.

[0028] The lower end of the locking plug plate 4 is provided with a first pushing inclined surface 405, and the first pushing inclined surface 405 is slidingly matched with the reinforcement plug plate 8, and the sliding buckle of the reinforcement plug plate 8 is installed in the reinforcement plug plate slide groove 305. When the locking plug plate 4 slides horizontally in the expansion plate 3, it will simultaneously press the reinforcement plug plate 8 to slide downward, so that the reinforcement plug plate 8 extends from the lower end of the expansion plate 3 and supports it on the ground, forming a support for the expansion plate 3 to ensure firmness. The main body of the reinforcement plug plate 8 is T-shaped and the upper end thereof is provided with a second pushing inclined surface 801. The second The push-in bevel 801 presses against the first push-in bevel 405. A rebound pressure rod 802 is fixedly connected to the side surface of the upper end of the reinforcement plate 8, and a plug 803 is fixedly connected to the lower end. The rebound pressure rod 802 presses against the second spring piece 306. The second spring piece 306 exerts an upward elastic force on the reinforcement plate 8. When the reinforcement plate 8 is pushed downward by the locking plate 4, it compresses the second spring piece 306. After the locking plate 4 is reset, the reinforcement plate 8 is also reset under the action of the second spring piece 306 and retracts into the expansion plate 3. A warning light 7 is installed on the top of the main frame 1. The warning light 7 is a solar-powered light that can emit a flashing light to serve as a warning.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

[0031] Components not described in detail herein are prior art.

[0032] Although the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A road construction protection device, characterized in that: The invention comprises a main frame (1), wherein the bottom of the main frame (1) is a base (101), and the upper frame of the base (101) is divided into a folding storage groove (102) and a buckle fixing groove (104), and a rotating connection hole (103) is provided at the inner corner position of the bottom and the top of the folding storage groove (102), and a rotating plate (2) is rotatably installed in the rotating connection hole (103), and the side of the rotating plate (2) is rotatably connected to the expansion plate (3) through a hinge (6), and the expansion plates (3) are connected in series through the hinge (6), and the inner side of the buckle fixing groove (104) is fixedly connected to the expansion plate (3). A parallel hanging buckle (105) and a vertical hanging buckle (106) are connected, the openings of the parallel hanging buckle (105) and the vertical hanging buckle (106) are perpendicular to each other, and the opening of the parallel hanging buckle (105) is facing the corresponding side wall of the buckle fixing groove (104) and a parallel plug-in slot (109) is opened. A pulley (107) and a hook (108) are fixedly connected to one side of the buckle fixing groove (104) on the partition between the folding storage groove (102) and the buckle fixing groove (104). The number of the hooks (108) is greater than one and is evenly spaced. The movable plate (2) and the expansion plate (3) are respectively provided with a locking plug plate (4) by sliding and snap-fitting inside. The upper and lower positions of the front side of the locking plug plate (4) are respectively provided with a rope connection slot (401), and the middle portion is provided with a hook slot (402). The upper and lower positions of the rear side of the locking plug plate (4) are fixedly connected with an expansion rope (403). The expansion rope (403) corresponds to the rope connection slot (401) one by one. The end of the expansion rope (403) is fixedly connected with an expansion connector (404). The locking plug plate (403) is installed inside the rotating plate (2) and the expansion plate (3). The plug plates (4) are fixedly connected in the rope connection slot (401) via the extension connector (404) to complete the series connection. A locking pull rod (5) is fixedly connected to the locking plug plate (4) at the end of the series connection via screws. The extension connector (404) is fixedly connected to the rope connection slot (401) via screws. A first pressing inclined surface (405) is provided at the lower end of the locking plug plate (4). A reinforcing plug plate (8) is slidably fitted on the first pushing inclined surface (405) and pressed against. The reinforcing plug plate (8) is slidably fitted and mounted on the lower end of the extension plate (3).The expansion board (3) is provided with an expansion board embedded slot (301), a locking plug slot (302), and a reinforcement plug slot (305). The position corresponding to the expansion board embedded slot (301) is hollowed out on the surface of the expansion board (3). A first spring piece (304) is installed inside the locking plug slot (302). The expansion board embedded slot (301) and the locking plug slot (302) are connected at upper and lower positions through a rope threading hole (303). The locking plug plate (4) slides horizontally in the expansion board embedded slot (301) and can be inserted from the expansion board. The side opening of the embedded slide groove (301) of the board extends out and is correspondingly plugged into the locking plug groove (302) opened on the adjacent expansion board (3); the expansion rope (403) slides through the rope hole (303) and extends out of the expansion board (3) through the locking plug groove (302); the reinforcement plug-in board slide groove (305) is located below the embedded slide groove (301) of the expansion board and is connected to each other; a second spring piece (306) is installed above the reinforcement plug-in board slide groove (305) at the bottom of the embedded slide groove (301) of the expansion board; the reinforcement plug-in board slide groove (305) is located below the embedded slide groove (301) of the expansion board and is connected to each other; the reinforcement plug-in board slide groove (305) is located above the embedded slide groove (301) of the expansion board and is connected to the second spring piece (306) at the bottom of the embedded slide groove (301) of the expansion board; the reinforcement plug-in board slide groove (305) is located below the embedded slide groove (301) of the expansion board The insert plate (8) is mounted on the reinforcing insert plate slide groove (305) and slides vertically therein to extend from the bottom of the expansion plate (3). The reinforcing insert plate (8) is pressed against the second elastic piece (306). The reinforcing insert plate (8) is T-shaped and has a second pushing inclined surface (801) at its upper end. The second pushing inclined surface (801) is pressed against the first pushing inclined surface (405). The upper end side of the reinforcing insert plate (8) is fixedly connected to a rebound pressure rod (802). The lower end is fixedly connected to a plug (803). The rebound pressure rod (80 2) pressing on the second elastic piece (306); the locking pull rod (5) includes a pull rod (501), and the two ends of the pull rod (501) are fixedly connected to a pulling rope (502), and the end of the pulling rope (502) is fixedly connected to a pull rod connector (503), and the pull rod connector (503) has the same structure as the extension connector (404), and is correspondingly installed in the rope connection slot (401) and fixedly connected by screws. The pulling rope (502) at one end of the pull rod (501) is two parallel and a gap is reserved between them.

2. A road construction protection device according to claim 1, characterized in that: The width and height of the parallel plug-in slots (109) are both greater than the thickness and length of the expansion board (3).

3. A road construction protection device according to claim 1, characterized in that: The rotating plate (2) is fixedly connected to a rotating shaft (201) on the side thereof, and a rotating plate embedded sliding groove (202) is provided inside the rotating plate. Positions corresponding to the rotating plate embedded sliding groove (202) are hollowed out on the surface of the rotating plate (2). The rotating shaft (201) is rotatably inserted into the rotating connection hole (103). The locking plug plate (4) slides horizontally in the rotating plate embedded sliding groove (202) and can extend from a side opening of the rotating plate embedded sliding groove (202).

4. A road construction protection device according to claim 1, characterized in that: The hinge (6) is fixedly connected to the rotating plate (2) and the expansion plate (3) by screws, and the hinges (6) on both sides of the expansion plate (3) connected to the adjacent expansion plates (3) are not on the same side.

5. A road construction protection device according to claim 1, characterized in that: A warning light (7) is installed on the top of the main frame (1), and the warning light (7) is a solar light.

Images