Emergency protection device for road construction operations

Abstract

The present invention relates to the technical field of road construction, specifically an emergency protection device for road construction operations, including a first bracket; an opening and closing enclosure and a second bracket are arranged on the first bracket, and the first bracket and the second bracket are connected by a buffer structure; a rotating enclosure is installed on the second bracket; a corner structure is arranged on the rotating enclosure; a support seat is fixedly installed on the second bracket; a brake block is slidably fitted on the support seat; a brake structure is arranged on the brake block; when the rotating enclosure is impacted, the impact force generated by the impact will drive the corner structure to act, so as to drive the rotating enclosure to move towards the first bracket to change the included angle of the rotating enclosure; during this process, the brake structure acts to increase the friction between the brake block and the ground; through the mutual cooperation of the corner structure, the brake structure and the buffer structure, the impact force generated by the impact can be offset to the greatest extent; to reduce the probability of dangerous situations occurring, thereby protecting the lives of construction workers.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, and specifically to an emergency protection device for road construction operations. Background Art

[0002] Common road maintenance or repair is carried out in a semi-width construction method, that is, one side of the road is closed and the other side is opened to relieve traffic pressure. For the closure of the construction area, the method of setting up enclosure fences is often used; that is, the construction area is surrounded by enclosures, and construction workers carry out operations inside the enclosures.

[0003] Common enclosure fences include enclosures, fixed brackets, movable brackets and buffer devices; when in use, the fixed brackets are fixed to the ground, the movable brackets are placed outside the construction area, the enclosures connect the fixed brackets and the movable brackets, and the buffer devices are arranged on the enclosures; because the road remains open to traffic during construction, through the buffer structure, the impact force can be reduced when the vehicle collides with the enclosure fence, thus protecting the lives of construction workers inside the enclosure.

[0004] When closing the road by using the common enclosure fence method, since the impact force is very large when the vehicle collides with the enclosure, it is not very realistic to completely offset the impact force through the buffer structure. When the vehicle speed is relatively fast, after the vehicle collides with the enclosure, it will collide with the construction workers. Although the enclosure can increase the impact area, the impact angle is still perpendicular to the construction workers, and the probability of the construction workers being injured is still relatively high at this time. Summary of the Invention

[0005] The purpose of the present invention is to provide an emergency protection device for road construction operations to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An emergency protection device for road construction operations, including a first bracket; symmetrically arranged opening and closing enclosures are rotatably installed on the first bracket;

[0008] A second bracket is arranged on the vehicle-facing surface of the first bracket, and the first bracket and the second bracket are connected by a buffer structure; the buffer structure can drive the second bracket away from the first bracket;

[0009] A rotating enclosure is slidably installed on the second bracket; a corner structure is arranged on the rotating enclosure;

[0010] A support seat is fixedly installed on the second bracket; a brake block is slidably fitted on the support seat; a braking structure is arranged on the brake block;

[0011] When the rotating enclosure is hit, the impact force generated by the impact will drive the corner structure to move, thereby driving the bottom of the rotating enclosure to move toward the first bracket to change the angle between the rotating enclosure and the ground; during this process, the brake structure will move to increase the friction between the brake block and the ground.

[0012] As a further solution of the present invention: the corner structure includes an engaging rod fixedly mounted on the support seat; a hinge block is slidably engaged in the engaging rod; a connecting block connected to the buffer structure is fixedly mounted on the end of the engaging rod away from the second bracket; a return spring is arranged in the engaging rod, and the connecting sections of the return spring respectively abut against the connecting block and the hinge block; an engaging block is fixedly mounted on the upper part of the rotating enclosure; a sliding groove is provided on the second bracket which is slidably engaged with the engaging block; the bottom of the rotating enclosure is rotatably mounted on the hinge block.

[0013] As a further solution of the present invention: the brake structure includes a connecting plate slidably arranged in the support seat, and a telescopic column is fixedly installed on the connecting plate; a telescopic sleeve slidably engaged with the telescopic column is fixedly installed on the brake block; an extrusion spring is arranged in the telescopic sleeve; the two ends of the extrusion spring respectively contact the telescopic column and the brake block; a mating block mating with the hinged block is fixedly installed on the connecting plate, and the mating block is slidably installed on the support seat and passes through the engaging rod.

[0014] As a further solution of the present invention: the buffer structure includes multiple groups of railings, wherein the railings close to the second bracket are fixedly connected to the connecting block; and the railings close to the first bracket are fixedly connected to the first bracket; rollers are rotatably installed on the bottom of the railings, and a mounting seat is fixedly installed on the top of the railings, and a warning light is fixedly installed on the mounting seat.

[0015] As a further solution of the present invention: the buffer structure also includes multiple groups of first diagonal braces and second diagonal braces, the first diagonal braces and the second diagonal braces are rotatably connected, and both are rotatably installed on the railing; connecting shafts are rotatably installed on both ends of the first diagonal braces and the second diagonal braces, and vertical grooves slidably engaged with the connecting shafts are symmetrically opened on the railing; multiple groups of guide rails are fixedly installed on the railing; a slide plate slidably engaged with the guide rails is fixedly installed on the connecting shaft, and a buffer spring is fixedly installed on the bottom of the railing; the other end of the buffer spring is fixedly connected to one of the slide plates.

[0016] As a further solution of the present invention: a wedge is slidably engaged with the top of the railing; a yield spring is provided on the railing, and the two ends of the yield spring are respectively in contact with the railing and the wedge; and the wedge cooperates with the other slide plate.

[0017] As a further solution of the present invention: a base for support is fixedly installed at the bottom of the first bracket, multiple groups of counterweight blocks are movably arranged on the base, and the counterweight blocks are symmetrically arranged.

[0018] As a further solution of the present invention: a pull ring is rotatably installed on the wedge block.

[0019] As a further solution of the present invention: multiple groups of grooves are formed on the surface of the brake block that contacts the ground.

[0020] As a further solution of the present invention: a universal wheel is rotatably installed at the bottom of the support seat.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: through the mutual cooperation of the corner structure, the braking structure and the buffer structure, the impact force generated by the impact can be offset to the greatest extent; and by changing the angle of the rotating enclosure through the corner structure, and increasing the impact area between the vehicle and the construction personnel and changing the impact angle through the inclined rotating enclosure, the life safety of the construction personnel can be protected to the greatest extent, so as to avoid dangerous situations such as the construction personnel being involved under the vehicle or being knocked flying, thereby protecting the life safety of the construction personnel. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of an embodiment of an emergency protection device for road construction operations.

[0023] Figure 2 It is a schematic structural diagram of another perspective of an embodiment of an emergency protection device for road construction operations.

[0024] Figure 3 It is a schematic structural diagram of the first bracket in an embodiment of an emergency protection device for road construction operations.

[0025] Figure 4 It is a schematic structural diagram of the second bracket in an embodiment of an emergency protection device for road construction operations.

[0026] Figure 5 It is a schematic structural diagram of the corner structure in an embodiment of an emergency protection device for road construction operations.

[0027] Figure 6 It is a schematic structural diagram of the support seat in a sectional view perspective in an embodiment of an emergency protection device for road construction operations.

[0028] Figure 7 It is a schematic structural diagram of the braking structure in an embodiment of an emergency protection device for road construction operations.

[0029] Figure 8 It is a schematic structural diagram of the buffer structure in an embodiment of an emergency protection device for road construction operations.

[0030] Figure 9 It is a schematic diagram of the structure of the railing in an embodiment of the emergency protection device for road construction operations.

[0031] Figure 10 It is a structural schematic diagram of the cross-sectional view of the railing in an embodiment of the emergency protection device for road construction operations.

[0032] Figure 11 for Figure 10 Schematic diagram of the structure at A in the middle.

[0033] Figure 12 It is a schematic diagram of the structure of the yield spring in the embodiment of the emergency protection device for road construction operations.

[0034] In the figure: 1, first bracket; 101, base;

[0035] 2. Counterweight;

[0036] 3. Open and close enclosures;

[0037] 4. second bracket; 401. slide slot;

[0038] 5. Rotating enclosure; 501. Engaging block;

[0039] 6. Support seat; 601. Universal wheel;

[0040] 7. Embedded rod; 701. Articulated block;

[0041] 8. Return spring;

[0042] 9. Connecting block;

[0043] 10. Connecting plate; 1001. Matching block; 1002. Telescopic column;

[0044] 11. Extrusion spring;

[0045] 12. brake block; 1201. groove; 1202. telescopic sleeve;

[0046] 13. Railing; 1301. Mounting seat; 1302. Roller; 1303. Guide rail; 1304. Vertical groove;

[0047] 14. Warning light;

[0048] 15. The first diagonal brace;

[0049] 16. Second diagonal brace;

[0050] 17, coupling; 1701, skateboard;

[0051] 18. Buffer spring;

[0052] 19, wedge; 1901, pull ring;

[0053] 20. Yielding spring. Specific embodiments

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0055] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, and it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0056] Please refer to Figures 1 to 12 , in the embodiment of the present invention, an emergency protection device for road construction operations includes a first bracket 1; symmetrically arranged opening and closing enclosures 3 are rotatably installed on the first bracket 1;

[0057] A second bracket 4 is provided on the vehicle-facing surface of the first bracket 1, and the first bracket 1 and the second bracket 4 are connected by a buffer structure; the buffer structure can drive the second bracket 4 away from the first bracket 1;

[0058] A rotating enclosure 5 is slidably installed on the second bracket 4; a corner structure is provided on the rotating enclosure 5;

[0059] A support seat 6 is fixedly installed on the second bracket 4; a brake block 12 is slidably fitted on the support seat 6; a braking structure is provided on the brake block 12;

[0060] When the rotating enclosure 5 is impacted, the impact force generated will drive the corner structure to act, so as to drive the bottom of the rotating enclosure 5 to move towards the first bracket 1, so as to change the angle between the rotating enclosure 5 and the ground; during this process, the braking structure acts to increase the friction between the brake block 12 and the ground.

[0061] Taking the embodiment in which all the features described in this application are combined as an example, when in use, move the device to the construction section, first fix the first bracket 1 so that the first bracket 1 will not easily slide on the ground; in this way, the stability of the device is increased to prevent the device from moving synchronously with the vehicle when being impacted, thus reducing the protection effect of the device on construction workers.

[0062] After that, the construction workers drive the second support 4 away from the first support 1 through the buffer structure according to the length of the construction section, so that the device can cover the entire construction section; by adjusting the coverage area of the device through the buffer structure, the operation difficulty can be effectively reduced, the construction burden can be alleviated, and the construction efficiency can be improved. After that, the construction workers rotate the opening and closing enclosure 3 to establish a passage into the construction section and keep the passage closed during the construction process to achieve closed construction.

[0063] When the device is impacted, since the second support 4 is located on the vehicle-facing side of the first support 1; therefore, the rotating enclosure 5 on the second support 4 will contact the vehicle first.

[0064] The impact force generated by the impact will drive the corner structure to act, driving the bottom of the rotating enclosure 5 to move towards the first support 1. At the same time, the angle between the rotating enclosure 5 and the ground will change, causing the rotating enclosure 5 to tilt away from the first support 1; by increasing the impact area between the vehicle and the construction workers and changing the impact angle through the tilted rotating enclosure 5, the life safety of the construction workers can be protected to the greatest extent, avoiding dangerous situations such as construction workers being involved under the vehicle or being hit and flying.

[0065] The movement of the rotating enclosure 5 will drive the braking structure to act, increasing the extrusion force of the brake block 12 on the ground, thereby increasing the friction force to reduce the kinetic energy generated by the impact and protecting the life safety of the construction workers.

[0066] When the impact force is too large and causes the second support 4 to approach the first support 1, due to the action of the buffer structure, the second support 4 always has a tendency to move away from the first support 1, further offsetting the impact force generated by the impact and protecting the life safety of the construction workers.

[0067] Through the mutual cooperation of the corner structure, the braking structure, and the buffer structure, the impact force generated by the impact can be offset to the greatest extent; and by changing the angle of the rotating enclosure 5 through the corner structure, the probability of dangerous situations occurring can be reduced, thereby protecting the life safety of the construction workers.

[0068] In another embodiment of the present invention, the corner structure includes a fitting rod 7 fixedly installed on the support base 6; a hinge block 701 is slidably fitted inside the fitting rod 7; a connection block 9 connected to the buffer structure is fixedly installed at one end of the fitting rod 7 away from the second support 4; a return spring 8 is arranged inside the fitting rod 7, and the two ends of the return spring 8 respectively abut against the connection block 9 and the hinge block 701; a fitting block 501 is fixedly installed on the upper part of the rotating enclosure 5; a sliding groove 401 slidably fitted with the fitting block 501 is opened on the second support 4; the bottom of the rotating enclosure 5 is rotatably installed on the hinge block 701.

[0069] Taking the embodiment combining all the features described in this application as an example, when in use and being impacted, the rotating enclosure 5 will first come into contact with the vehicle, and the impact point will be located at the lower part of the rotating enclosure 5.

[0070] The impact force generated by the impact will cause the bottom of the rotating enclosure 5 to rotate in cooperation with the hinge block 701, and at the same time drive the hinge block 701 to slide on the fitting rod 7 towards the first bracket 1, thereby compressing the return spring 8; during this process, the fitting block 501 will slide downward from the top in the chute 401, so that the angle between the rotating enclosure 5 and the ground changes; by increasing the impact area between the vehicle and the construction personnel and changing the impact angle through the inclined rotating enclosure 5, the life safety of the construction personnel can be protected to the greatest extent to avoid dangerous situations such as the construction personnel being involved under the vehicle or being hit and flying.

[0071] And the elastic force of the return spring 8 can keep the rotating enclosure 5 perpendicular to the ground during normal construction to ensure the normal use of the device.

[0072] In another embodiment of the present invention, the braking structure includes a connecting plate 10 slidably arranged in the support seat 6, and a telescopic column 1002 is fixedly installed on the connecting plate 10; a telescopic sleeve 1202 slidably fitted with the telescopic column 1002 is fixedly installed on the brake block 12; an extrusion spring 11 is arranged in the telescopic sleeve 1202; both ends of the extrusion spring 11 are in contact with the telescopic column 1002 and the brake block 12 respectively; a fitting block 1001 cooperating with the hinge block 701 is fixedly installed on the connecting plate 10, and the fitting block 1001 is slidably installed on the support seat 6 and penetrates through the fitting rod 7.

[0073] Taking the embodiment combining all the features described in this application as an example, when in use, during the process of the hinge block 701 sliding in the fitting rod 7, it will come into contact with the fitting block 1001.

[0074] Both ends of the fitting block 1001 in the length direction are set as slopes. Through the mutual extrusion of the slope of the hinge block 701 and the fitting block 1001, the fitting block 1001 will be driven to approach the brake block 12; thereby driving the connecting plate 10 to move synchronously, and thereby driving the telescopic column 1002 to slide inward in the telescopic sleeve 1202 to compress the extrusion spring 11.

[0075] In the initial state, the brake block 12 is in contact with the ground. The friction between the brake block 12 and the ground can ensure that during normal construction, the second bracket 4 will not move due to external interference such as wind. When the extrusion spring 11 is compressed, its elastic force will act on the brake block 12, thereby increasing the extrusion force between the brake block 12 and the ground, thereby increasing the friction between the brake block 12 and the ground, thereby increasing the resistance to the movement of the support seat 6, thereby increasing the resistance to the movement of the second bracket 4.

[0076] The increased resistance interacts with the impact force to offset part of the impact force generated by the collision, thereby protecting the lives of construction workers.

[0077] In another embodiment of the present invention, the buffer structure includes multiple groups of railings 13, wherein the railings 13 close to the second bracket 4 are fixedly connected to the connecting block 9; and the railings 13 close to the first bracket 1 are fixedly connected to the first bracket 1; a roller 1302 is rotatably installed at the bottom of the railing 13, and a mounting seat 1301 is fixedly installed on the top of the railing 13, and a warning light 14 is fixedly installed on the mounting seat 1301.

[0078] Taking the embodiment combining all the features described in the present application as an example, when in use, multiple groups of railings 13 block the connection between the construction lane and the connected lane.

[0079] After the first bracket 1 is fixed to the ground, the buffer structure can drive the railings 13 to move synchronously, so that the distance between the railings 13 is increased, thereby driving the second bracket 4 away from the first bracket 1, thereby ensuring that the device can cover the entire construction section.

[0080] During the movement of the railing 13, the rollers 1302 roll with the ground to reduce the difficulty of moving the railing 13; and the rollers 1302 can support the railing 13 to prevent it from tipping over.

[0081] The warning light 14 is used for warning during nighttime construction to remind passing vehicles to take evasive measures to avoid accidents due to poor nighttime visibility.

[0082] In another embodiment of the present invention, the buffer structure further includes multiple groups of first diagonal braces 15 and second diagonal braces 16. The first diagonal braces 15 are rotatably connected to the second diagonal braces 16 and are all rotatably installed on the railing 13. Connecting shafts 17 are rotatably installed at both ends of the first diagonal braces 15 and the second diagonal braces 16. Vertically extending grooves 1304 that are slidably fitted with the connecting shafts 17 are symmetrically formed on the railing 13. Multiple groups of guide rails 1303 are fixedly installed on the railing 13. Sliding plates 1701 that are slidably fitted with the guide rails 1303 are fixedly installed on the connecting shafts 17. A buffer spring 18 is fixedly installed at the bottom of the railing 13. The other end of the buffer spring 18 is fixedly connected to one of the sliding plates 1701.

[0083] Taking the embodiment in which all the features described in this application are combined as an example, during use, in the initial state, the connecting shafts 17 are located at the ends of the vertically extending grooves 1304. Among them, the connecting shaft 17 close to the roller 1302 is located at the bottom of the vertically extending groove 1304, and the connecting shaft 17 close to the warning light 14 is located at the top of the vertically extending groove 1304. At this time, the buffer spring 18 is compressed and in a locked state.

[0084] A "scissor structure" is formed between the first diagonal braces 15 and the second diagonal braces 16. When the ends of the first diagonal braces 15 and the second diagonal braces 16 in the same direction approach each other, it will drive the railings 13 to move away from each other; when the ends move away from each other, it will drive the railings 13 to approach each other.

[0085] After the first bracket 1 is fixedly connected to the ground, the locked state of the buffer spring 18 is released. At this time, the elastic force of the buffer spring 18 will drive the bottom sliding plate 1701 to move upward, thereby driving the connecting shaft 17 to slide upward in the vertically extending groove 1304. At the same time, it drives another connecting shaft 17 to slide downward in the vertically extending groove 1304 and drives the sliding plate 1701 connected thereto to move downward. During the movement of the sliding plate 1701, it slidably cooperates with the guide rail 1303, thereby preventing the sliding plate 1701 from being misaligned.

[0086] After the locked state of the buffer spring 18 is released, the railings 13 move away from each other, thereby driving the second bracket 4 away from the first bracket 1, so as to ensure that the device can cover the entire construction section.

[0087] When the impact force is too large, after the corner structure and the braking structure have completed their actions, when the second bracket 4 still moves towards the first bracket 1, it will drive the railings 13 to approach each other, thereby driving the upper coupling shaft 17 to slide upward in the vertical groove 1304, while the bottom coupling shaft 17 moves downward in the vertical groove 1304, thereby driving the sliding plate 1701 to approach the roller 1302 and compressing the buffer spring 18. Through the combined action of the elastic forces of multiple buffer springs 18, the impact force is further offset, thereby increasing the kinetic energy of the movement of the second bracket 4, so as to reduce the kinetic energy of the second bracket 4 hitting the construction worker and protect the life safety of the construction worker.

[0088] In another embodiment of the present invention, a wedge block 19 is slidably fitted at the top of the railing 13; a yielding spring 20 is provided on the railing 13, and both ends of the yielding spring 20 are respectively in contact with the railing 13 and the wedge block 19; and the wedge block 19 cooperates with the other sliding plate 1701.

[0089] Taking the embodiment combined with all the features described in this application as an example, in use, in the initial and state, the wedge block 19 is in contact with the upper sliding plate 1701, so that the sliding plate 1701 cannot move downward, making the device in a contracted state, thus facilitating the transportation of the device.

[0090] When the first bracket 1 is fixed to the ground, when an external force is applied, the contact area between the wedge block 19 and the sliding plate 1701 gradually decreases, and at this time the yielding spring 20 is compressed; when the wedge block 19 is separated from the sliding plate 1701, the elastic force of the yielding spring 20 will drive the wedge block 19 to reset; then under the action of the elastic force of the buffer spring 18, the sliding plate 1701 will move downward, causing the railings 13 to move away from each other, thereby driving the second bracket 4 away from the first bracket 1.

[0091] After the construction is completed, by applying an external force to make the sliding plate 1701 move upward, during the movement, the sliding plate 1701 will be in extrusion fit with the wedge surface of the wedge block 19 to drive the wedge block 19 to compress the yielding spring 20. After the sliding plate 1701 passes over the wedge block 19, the elastic force of the yielding spring 20 will drive the wedge block 19 to reset again to limit the downward movement of the sliding plate 1701, thereby locking the buffer spring 18.

[0092] In another embodiment of the present invention, a base 101 for support is fixedly installed at the bottom of the first bracket 1, and multiple sets of counterweight blocks 2 are movably arranged on the base 101, and the counterweight blocks 2 are symmetrically arranged.

[0093] Taking the embodiment combined with all the features described in this application as an example, in use, the first bracket 1 can be placed upright on the ground through the base 101, and the base 101 can increase the stability of the first bracket 1.

[0094] After that, the counterweight 2 is installed on the base 101 and fixed to each other by bolts. By adding the counterweight 2 to fix the first bracket 1, it is possible to reduce the damage to the road surface, improve the construction efficiency, and avoid the traffic pressure caused by long-term lane closure.

[0095] In another embodiment of the present invention, a pull ring 1901 is rotatably installed on the wedge block 19.

[0096] Taking the embodiment combined with all the features described in this application as an example, when in use, the difficulty of moving the wedge block 19 can be reduced through the pull ring 1901, thereby improving the construction efficiency.

[0097] In another embodiment of the present invention, a plurality of groups of grooves 1201 are formed on the surface of the brake block 12 in contact with the ground.

[0098] Taking the embodiment combined with all the features described in this application as an example, when in use, the plurality of groups of grooves 1201 can increase the friction coefficient of the brake block 12, thereby increasing the moving resistance of the support seat 6.

[0099] In another embodiment of the present invention, a universal wheel 601 is rotatably installed at the bottom of the support seat 6.

[0100] Taking the embodiment combined with all the features described in this application as an example, when in use, the difficulty of the second bracket 4 moving away from the first bracket 1 can be reduced through the universal wheel 601, thereby improving the construction efficiency.

[0101] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0102] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Emergency protection device for road construction operations, including a first support (1); symmetrically arranged opening and closing enclosures (3) are rotatably installed on the first support (1); It is characterized in that A second support (4) is arranged on the vehicle-facing surface of the first support (1), and the first support (1) and the second support (4) are connected by a buffer structure; the buffer structure can drive the second support (4) away from the first support (1); A rotating enclosure (5) is slidably installed on the second support (4); a corner structure is arranged on the rotating enclosure (5); A support base (6) is fixedly installed on the second support (4); a brake block (12) is slidably fitted in the support base (6); a braking structure is arranged on the brake block (12); When the rotating enclosure (5) is impacted, the impact force generated will drive the corner structure to act, so as to drive the bottom of the rotating enclosure (5) to move towards the first support (1), so as to change the angle between the rotating enclosure (5) and the ground; during this process, the braking structure acts to increase the friction between the brake block (12) and the ground; The corner structure includes a fitting rod (7) fixedly installed on the support base (6); a hinge block (701) is slidably fitted in the fitting rod (7); a connection block (9) connected to the buffer structure is fixedly installed at one end of the fitting rod (7) away from the second support (4); a return spring (8) is arranged in the fitting rod (7), and the two ends of the return spring (8) respectively abut against the connection block (9) and the hinge block (701); an engaging block (501) is fixedly installed on the upper part of the rotating enclosure (5); a sliding groove (401) slidably fitted with the engaging block (501) is formed on the second support (4); the bottom of the rotating enclosure (5) is rotatably installed on the hinge block (701).

2. The emergency protection device for road construction operations according to claim 1, wherein The braking structure includes a connecting plate (10) slidably arranged in the support base (6), and a telescopic column (1002) is fixedly installed on the connecting plate (10); a telescopic sleeve (1202) slidably fitted with the telescopic column (1002) is fixedly installed on the brake block (12); a compression spring (11) is arranged in the telescopic sleeve (1202); the two ends of the compression spring (11) respectively abut against the telescopic column (1002) and the brake block (12); a mating block (1001) cooperating with the hinge block (701) is fixedly installed on the connecting plate (10), and the mating block (1001) is slidably installed on the support base (6) and penetrates through the fitting rod (7).

3. The emergency protection device for road construction operations according to claim 1, characterized in that, The buffer structure includes multiple groups of railings (13). Among them, the railing (13) close to the second bracket (4) is fixedly connected to the connection block (9); and the railing (13) close to the first bracket (1) is fixedly connected to the first bracket (1); a roller (1302) is rotatably installed at the bottom of the railing (13), a mounting seat (1301) is fixedly installed at the top of the railing (13), and a warning light (14) is fixedly installed on the mounting seat (1301).

4. The emergency protection device for road construction operations according to claim 3, wherein The buffer structure further includes multiple groups of first braces (15) and second braces (16). The first braces (15) and the second braces (16) are rotatably connected and are both rotatably installed on the railing (13); coupling shafts (17) are rotatably installed at both ends of the first braces (15) and the second braces (16), and vertical grooves (1304) that are slidably fitted with the coupling shafts (17) are symmetrically formed on the railing (13); multiple groups of guide rails (1303) are fixedly installed on the railing (13); a sliding plate (1701) that is slidably fitted with the guide rails (1303) is fixedly installed on the coupling shaft (17), and a buffer spring (18) is fixedly installed at the bottom of the railing (13); the other end of the buffer spring (18) is fixedly connected to one of the sliding plates (1701).

5. The emergency protection device for road construction operations according to claim 4, wherein A wedge block (19) is slidably fitted at the top of the railing (13); a yielding spring (20) is arranged on the railing (13), and both ends of the yielding spring (20) are in contact with the railing (13) and the wedge block (19) respectively; and the wedge block (19) cooperates with the other sliding plate (1701).

6. The emergency protection device for road construction operations according to claim 1, characterized in that A base (101) for support is fixedly installed at the bottom of the first bracket (1), multiple groups of counterweight blocks (2) are movably arranged on the base (101), and the counterweight blocks (2) are symmetrically arranged.

7. The emergency protection device for road construction operations according to claim 5, wherein, A pull ring (1901) is rotatably installed on the wedge block (19).

8. The road construction operation emergency protection device according to claim 2, wherein Multiple groups of grooves (1201) are formed on the surface of the brake block (12) that contacts the ground.

9. The emergency protection device for road construction operations according to claim 1, wherein A universal wheel (601) is rotatably installed at the bottom of the support seat (6).

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