A safety fence for river construction

Abstract

The present invention relates to the field of construction protection technology, and more specifically, it relates to a safety fence for river construction, including a guardrail, a plug-in sleeve mechanism is provided on one side of the guardrail, and a plug-in mechanism is provided on the side of the guardrail away from the plug-in sleeve mechanism, the plug-in mechanism and the plug-in sleeve mechanism are matched and connected, and the plug-in mechanism and the plug-in sleeve mechanism can be adjusted in rotation angle after being matched and connected, an angle locking mechanism is provided between the plug-in mechanism and the plug-in sleeve mechanism on both sides of the guardrail, and the angle locking mechanism penetrates into the plug-in sleeve mechanism and is plugged into the plug-in sleeve mechanism, an unlocking mechanism is provided inside the angle locking mechanism, and the activity of the angle locking mechanism is adjusted by the unlocking mechanism. The safety fence of the present invention not only improves the efficiency of overlapping the fence at different angles and the efficiency of later disassembly, but also improves the stability and safety of the safety protection fence, and avoids the trouble of illegal disassembly by unauthorized personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of construction protection, and more specifically, to a safety fence for river channel construction. Background Art

[0002] In river construction, infrastructure construction and other similar engineering fields, construction safety fences are key facilities to ensure construction safety, maintain on-site order and protect the surrounding environment. Their design and performance are crucial. However, the construction safety fences widely used in the market currently have a series of technical problems in their design, which not only affect the effectiveness of the fences, but also increase the risks and costs during the construction process.

[0003] Many construction fences are connected by bolts. Although this connection method is structurally stable, it has a significant problem, that is, the angle between the fences cannot be adjusted. Once the fence is installed, its shape and layout are fixed, and it is difficult to adjust it according to the actual situation of the construction site. This limits the adaptability of the fence in complex terrain or irregular construction areas, and increases the difficulty and cost of installation.

[0004] Another common connection method is to connect the fences with pins. Although this method is convenient for quick installation and disassembly, the angle of the connected fence cannot be locked, causing the fence to easily shift and deform during use. This not only affects the overall stability of the fence, but may also pose a threat to the safety of the construction area.

[0005] In order to solve this problem, some fence designs use bolts as latches, allowing the angle to be locked by tightening the bolts after adjusting the angle. However, this connection method is cumbersome and requires locking and unlocking one by one, which not only increases the labor intensity of construction workers, but also prolongs the installation and disassembly time of the fence, reducing work efficiency.

[0006] At the same time, the connection methods of the above-mentioned fences all have the problem of unstable disassembly points. After being connected, the fences of the above-mentioned connection methods can be disassembled from any position. Although this provides operational flexibility, it also brings serious safety hazards. Unauthorized personnel can easily find the disassembly points and carry out illegal disassembly, resulting in severe challenges to the safety management of the construction area.

[0007] In order to solve the above problems, a safety fence for river construction is proposed. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] In response to the problems existing in the prior art, the present invention provides a safety fence for river construction to solve the problems mentioned in the background technology that the safety protection fence currently under construction has poor adaptability, poor stability and difficult overlapping operation according to different connection methods. At the same time, the disassembly point of the current safety protection fence is not fixed, resulting in poor safety.

[0010] (II) Technical solution

[0011] To achieve the above-mentioned object, the present invention provides the following technical solutions: A safety fence for river channel construction, comprising a guardrail, a plug-in sleeve mechanism is provided on one side of the guardrail, and a plug-in mechanism is provided on the side of the guardrail away from the plug-in sleeve mechanism, the plug-in mechanism and the plug-in sleeve mechanism are matched and connected, and the plug-in mechanism and the plug-in sleeve mechanism can be adjusted in rotation angle after being matched and connected;

[0012] An angle locking mechanism is provided between the plug-in mechanism and the plug-in sleeve mechanism on both sides of the guardrail, and the angle locking mechanism penetrates into the plug-in sleeve mechanism and is plugged into the plug-in mechanism in the plug-in sleeve mechanism;

[0013] An unlocking mechanism is arranged inside the angle locking mechanism, and the activity of the angle locking mechanism is adjusted by the unlocking mechanism.

[0014] The present invention is further configured such that the plug-in sleeve mechanism includes a plug-in socket provided at the upper and lower ends of one side of the guardrail, and a plug-in hole provided on the plug-in socket;

[0015] The plug-in mechanism comprises limiting support rods arranged at the upper and lower ends of the side of the guardrail away from the plug-in seat, a latch hole opened at one end of the limiting support rod, and a latch rod movably plugged into the latch hole.

[0016] The present invention is further configured such that a convex block is provided at the top end of the limit support rod at the position of the pin hole, and a limit groove is provided on the convex block;

[0017] The top end of the latch rod is provided with an anti-dropping block, and the top end of the anti-dropping block is provided with a pull ring, the bottom end of the anti-dropping block is provided with a limiting block, and the limiting block and the limiting groove are matched and clamped.

[0018] The present invention is further configured such that an inner groove is provided on the circumferential side wall of the latch rod, and a tooth block is provided in an annular array within the inner groove, and the angle locking mechanism enters the inner groove and engages with the gap between the tooth blocks in the annular array under the resistance of the socket.

[0019] The present invention is further configured such that the angle locking mechanism includes a through pipe penetrating the guardrail, a locking assembly disposed in the through pipe, and a spring No. 1 disposed in the through pipe and sleeved with the locking assembly;

[0020] The socket is provided with a movable groove, and the movable groove and the locking assembly are movably plugged.

[0021] The present invention is further configured such that the locking assembly includes a push rod disposed in the through pipe, a movable rod disposed at one end of the push rod close to the first spring, and a block disposed at one end of the movable rod away from the push rod;

[0022] The movable rod and the movable groove are movably matched and plugged, and the clamping block and the plurality of tooth blocks are clamped with gaps.

[0023] The present invention is further configured such that a spring groove is provided at one end of the push rod close to the movable rod, and the spring groove and one end of the movable rod are movably plugged, a No. 2 spring is arranged inside the spring groove, and two ends of the No. 2 spring are respectively fixedly connected to the bottom of the spring groove and one end of the movable rod;

[0024] A longitudinal through hole is formed on the spring slot, and a positioning rod is movably installed in the through hole;

[0025] A positioning hole is provided on the movable rod, and the positioning hole and the positioning rod are matched and plugged.

[0026] The present invention is further configured such that a strip groove is provided on the through pipe, and a stopper is provided on the top end of the positioning rod;

[0027] The unlocking mechanism includes a No. 3 spring sleeved on the positioning rod, and an unlocking ring sleeved on the outside of the circumference of the through pipe;

[0028] A locking surface and an unlocking surface are arranged inside the unlocking ring.

[0029] The present invention is further configured such that a retaining ring is provided on the outer wall of the through pipe, and the retaining ring is provided on a side of the unlocking ring away from the guardrail.

[0030] The present invention is further configured such that the tooth blocks are located inside the inner groove, and the maximum diameter enclosed by the tooth blocks in the annular array is smaller than the diameter of the latch rod.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the present invention provides a safety fence for river construction, which has the following beneficial effects: in the present invention, the matching connection between the plug-in mechanism and the plug-in sleeve mechanism is used to achieve fast and convenient overlap between the fences, and at the same time, after the overlap and adjustment of the two fence angles, the locking of the first two fence angles can be achieved by overlapping the subsequent fences, thereby improving the overlap efficiency, and at the same time, the latch rod is engaged with the tooth blocks and the clamping blocks of the annular array on the inner groove, and the latch rod cannot be pulled out, so that the fence can only be disassembled from the tail to the front after overlapping, thereby improving the safety of the fence, and in addition, through the setting of the unlocking mechanism, the fences locked at adjacent angles can be adjusted in angle without disassembling the subsequent fences. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overlapping structure of the safety fence used for river construction.

[0034] Figure 2 This is a schematic diagram of the overall structure of the safety fence used for river construction.

[0035] Figure 3 This is a schematic diagram of the partial cross-section structure of the safety fence used for river construction.

[0036] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0037] Figure 5 for Figure 3 Enlarged structural diagram at B in the middle.

[0038] Figure 6 The present invention is a schematic diagram of the explosion structure of the plug-in mechanism, the plug-in mechanism and the unlocking mechanism of the safety fence for river construction.

[0039] Figure 7 for Figure 6 Enlarged structural diagram at point C in the middle.

[0040] Figure 8 This is a schematic diagram of the cross-sectional structure of the unlocking ring of the safety fence used for river construction.

[0041] In the figure: 1, guardrail; 2, plug-in sleeve mechanism; 201, plug-in seat; 202, plug-in hole; 203, movable groove; 3, plug-in mechanism; 301, limit support rod; 302, latch hole; 303, latch rod; 304, protrusion; 305, limit groove; 306, anti-drop block; 307, pull ring; 308, limit block; 309, inner groove; 310, tooth block; 4, angle locking mechanism; 401, through pipe ; 402, spring No. 1; 5, unlocking mechanism; 501, spring No. 3; 502, unlocking ring; 503, locking surface; 504, unlocking surface; 505, retaining ring; 6, locking assembly; 601, push rod; 602, movable rod; 603, block; 604, spring groove; 605, spring No. 2; 606, through hole; 607, positioning rod; 608, positioning hole; 609, strip groove; 610, block. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0044] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0045] For examples, see Figure 1 - Figure 8 A safety fence for river channel construction includes a guardrail 1, a plug-in sleeve mechanism 2 is arranged on one side of the guardrail 1, and a plug-in mechanism 3 is arranged on the side of the guardrail 1 away from the plug-in sleeve mechanism 2, the plug-in mechanism 3 and the plug-in sleeve mechanism 2 are matched and connected, and the plug-in mechanism 3 and the plug-in sleeve mechanism 2 can be adjusted in rotation angle after being matched and connected;

[0046] An angle locking mechanism 4 is provided between the plug-in mechanism 3 and the plug-in sleeve mechanism 2 on both sides of the guardrail 1, and the angle locking mechanism 4 penetrates into the plug-in sleeve mechanism 2 and is engaged with the plug-in mechanism 3 plugged into the plug-in sleeve mechanism 2;

[0047] An unlocking mechanism 5 is arranged inside the angle locking mechanism 4 , and the activity of the angle locking mechanism 4 is adjusted by the unlocking mechanism 5 .

[0048] The angle locking mechanism 4 in the safety fence of the present invention can only be used when the number of safety fences is greater than two, wherein the plug-in mechanism 3 and the plug-in sleeve mechanism 2 are symmetrically arranged with respect to the upper and lower ends of both sides of the guardrail 1. Taking three safety fences as an example, when the plug-in mechanism 3 of the No. 1 safety fence is connected with the plug-in sleeve mechanism 2 of the No. 2 safety fence, the plug-in mechanism 3 and the plug-in sleeve mechanism 2 are rotationally connected by matching and plugging. At this time, the angles of the No. 1 safety fence and the No. 2 safety fence are adjusted, and then the No. 3 safety fence is installed. When the plug-in sleeve mechanism 2 on the No. 3 safety fence matches the plug-in mechanism 3 on the No. 2 safety fence, the angle locking mechanism 4 is pushed, so that the angle locking mechanism 4 enters the plug-in sleeve mechanism 2 of the No. 2 safety fence, and is connected with the plug-in mechanism 3 connected to the No. 1 safety fence and the No. 2 safety fence. The plug-in mechanism 3 and the plug-in sleeve mechanism 2 are locked, so that the plug-in mechanism 3 and the plug-in sleeve mechanism 2 cannot rotate, thereby locking the adjusted angles of the No. 1 safety fence and the No. 2 safety fence. When the plug-in mechanism 3 of the No. 3 safety fence is not matched and connected with the plug-in sleeve mechanism 2 on the No. 1 safety fence, the angle locking mechanism 4 on the No. 3 safety fence is not pushed by the plug-in sleeve mechanism 2 of the No. 1 safety fence, so that the connection position of the No. 2 safety fence and the No. 3 safety fence is in a rotatable state. When the plug-in mechanism 3 of the No. 3 safety fence and the plug-in sleeve mechanism 2 on the No. 1 safety fence are matched and connected, the angle locking mechanism 4 on the No. 3 safety fence and the plug-in sleeve mechanism 2 of the No. 1 safety fence are pushed against each other, so that the angle between the No. 2 safety fence and the No. 3 safety fence is locked. At this time, the No. 1 safety fence, the No. 2 safety fence and the No. 3 safety fence are in a stable angle state.

[0049] The plug-in sleeve mechanism 2 includes a plug-in socket 201 disposed at the upper and lower ends of one side of the guardrail 1, and a plug-in hole 202 opened on the plug-in socket 201;

[0050] The plug-in mechanism 3 includes a limit rod 301 disposed at the upper and lower ends of the side of the guardrail 1 away from the plug socket 201, a latch hole 302 opened at one end of the limit rod 301, and a latch rod 303 movably plugged into the latch hole 302.

[0051] The upper and lower ends of the socket 201 and the guardrail 1 can be welded or fixedly connected by bolts. When the socket mechanism 2 and the plug mechanism 3 are matched, the plug hole 202 of the socket 201 and the pin hole 302 on the limit support rod 301 are coaxially arranged. The limit support rod 301 is provided with two and is symmetrically arranged about the upper and lower ends of the socket 201. The pin rod 303 and the limit support rod 301 are split. The pin rod 303 is a plug-in accessory and can be inserted from the limit support rod 301. Therefore, the specific connection method of the plug-in sleeve mechanism 2 and the plug-in mechanism 3 is that the plug-in seat 201 is correspondingly inserted between the two limiting support rods 301, and the plug-in hole 202 and the pin hole 302 on the limiting support rod 301 are aligned, and then the pin rod 303 is passed through the pin hole 302 and the plug-in hole 202 from the top in sequence, wherein the plug-in hole 202 and the pin hole 302 are both circular holes, and the pin rod 303 is a circular plug rod, thereby realizing the rotation connection of the two safety fences.

[0052] Furthermore, when the connector 201 is inserted between the two limit support rods 301 and the connector hole 202 is aligned with the pin hole 302 on the limit support rod 301, the connector 201 will contact the angle locking mechanism 4 to lock the angle of the connection between the two front safety fences. Taking the above three safety fences as an example, when safety fence No. 3 is connected to safety fence No. 2, the connection between safety fence No. 1 and safety fence No. 2 completes the angle locking.

[0053] A protrusion 304 is provided at the top of the limiting support rod 301 at the position of the pin hole 302, and a limiting groove 305 is provided on the protrusion 304;

[0054] An anti-dropout block 306 is disposed at the top of the latch rod 303 , and a pull ring 307 is disposed at the top of the anti-dropout block 306 . A limiting block 308 is disposed at the bottom of the anti-dropout block 306 , and the limiting block 308 and the limiting groove 305 are matched and snap-fitted.

[0055] The protrusion 304 is arranged on the top of the limiting support rod 301 at the upper end of the socket 201, and the protrusion 304 is arranged in an annular shape, and its annular axis and the pin hole 302 are coaxial, and four limiting grooves 305 are opened in an annular array about the top of the protrusion 304, and the limiting block 308 and the anti-slip block 306 are integrally formed. The limiting block 308 is arranged in an annular array about the bottom end of the anti-slip block 306, and the pull ring 307 and the anti-slip block 306 are also integrally formed. Therefore, the pin rod 303 can adaptively adjust the plug-in mode of the pin rod 303 according to the connection angle of the two safety fences, thereby making the pull ring 307 convenient for construction personnel to pull and operate.

[0056] Furthermore, after the latch rod 303 is inserted into the latch hole 302 and the plug hole 202, the latch rod 303 and the limiting support rod 301 are locked by the limiting block 308 and the limiting groove 305, so that the angle locking mechanism 4 and the latch rod 303 are in contact with each other to achieve angle locking, as described below.

[0057] An inner groove 309 is provided on the circumferential side wall of the latch rod 303 , and a tooth block 310 is provided in an annular array in the inner groove 309 . The angle locking mechanism 4 enters the inner groove 309 and engages with the gap between the annular array tooth blocks 310 under the resistance of the socket 201 .

[0058] Thereby achieving the locking of the angle between the two safety fences.

[0059] The angle locking mechanism 4 includes a through pipe 401 penetrating the guardrail 1, a locking assembly 6 disposed in the through pipe 401, and a spring 402 disposed in the through pipe 401 and sleeved with the locking assembly 6;

[0060] The socket 201 is provided with a movable groove 203 , and the movable groove 203 and the locking assembly 6 are movably connected.

[0061] Two through pipes 401 are provided, corresponding to the plug-in mechanism 3 and the plug-in sleeve mechanism 2 at the upper and lower ends of both sides of the guardrail 1 respectively. The movable groove 203 penetrates the plug-in seat 201, so that the through pipe 401 and the plug-in hole 202 are connected. The No. 1 spring 402 is provided at one end of the through pipe 401 close to the plug-in seat 201. One end of the No. 1 spring 402 abuts against the plug-in seat 201, and the other end abuts against the locking component 6. In the initial state, the No. 1 spring 402 pushes the locking component 6 away from the plug-in seat 201, so that the locking component 6 is provided inside the movable groove 203 and does not enter the plug-in hole 202 of the plug-in seat 201. Therefore, in its initial state, There is no snap connection between the locking assembly 6 and the tooth block 310. Continuing with the example of the connection of three safety fences, after safety fence No. 1 and safety fence No. 2 are connected to each other, they can be rotated for angle adjustment. After safety fence No. 3 and fence No. 2 are connected, the socket 201 on safety fence No. 3 pushes the locking assembly 6 on safety fence No. 2 to move toward the socket 201 on safety fence No. 2, so that safety fence No. 1 and safety fence No. 2 can achieve angle locking of the connection after the locking assembly 6 on safety fence No. 2 and the tooth block 310 on the latch rod 303 on safety fence No. 1 are snapped.

[0062] The locking assembly 6 includes a push rod 601 disposed in the through pipe 401, a movable rod 602 disposed at one end of the push rod 601 close to the first spring 402, and a block 603 disposed at one end of the movable rod 602 away from the push rod 601;

[0063] The movable rod 602 and the movable groove 203 are movably matched and plugged, and the clamping block 603 and the plurality of tooth blocks 310 are clamped with gaps.

[0064] The movable rod 602 and the movable groove 203 are both anti-rotation grooves, which prevent the movable rod 602 from rotating and causing the block 603 to be unable to engage with the gap between the multiple tooth blocks 310. The No. 1 spring 402 is sleeved on the outside of the movable rod 602, and the No. 1 spring 402 and one end of the push rod 601 are in contact with each other. In the initial state, the No. 1 spring 402 pushes the push rod 601 away from the socket 201, thereby causing the block 603 and the end of the movable rod 602 away from the push rod 601 to shrink into the movable groove 203.

[0065] Furthermore, one end of the top rod 601 away from the movable rod 602 passes through the through tube 401 and protrudes from one end of the through tube 401 close to the limiting support rod 301. Continuing with the example of three safety fences, when the No. 3 safety fence is connected to the No. 2 safety fence, the socket 201 of the No. 3 safety fence pushes one end of the top rod 601 on the No. 2 safety fence, so that the movable rod 602 at the other end of the top rod 601 carries the clamping block 603 into the plug-in hole 202 of the socket 201 on the No. 2 safety fence, so that the clamping block 603 enters the inner groove 309 and engages with the gap of the multiple tooth blocks 310, thereby locking the connection angle between the No. 1 safety fence and the No. 2 safety fence.

[0066] A spring slot 604 is provided at one end of the top rod 601 close to the movable rod 602, and the spring slot 604 and one end of the movable rod 602 are movably plugged, a second spring 605 is provided inside the spring slot 604, and two ends of the second spring 605 are fixedly connected to the bottom of the spring slot 604 and one end of the movable rod 602 respectively;

[0067] A longitudinal through hole 606 is formed on the spring slot 604, and a positioning rod 607 is movably installed in the through hole 606;

[0068] A positioning hole 608 is formed on the movable rod 602 , and the positioning hole 608 and the positioning rod 607 are matched and plugged.

[0069] In this embodiment, the movable rod 602 is a retractable structure under the setting of the spring groove 604 and the No. 2 spring 605. Since the positioning rod 607 is inserted into the positioning hole 608 on the movable rod 602 under the action of gravity, in the initial state, the movable rod 602 and the top rod 601 are a fixed structure. Therefore, when the top rod 601 is pushed by resistance, the movable rod 602 at the other end and the multiple tooth blocks 310 in the inner groove 309 on the card block 603 and the latch rod 303 can be gap-engaged, thereby realizing the angle locking between the two safety fences.

[0070] Furthermore, the unlocking mechanism 5 releases the positioning of the positioning rod 607 on the movable rod 602, so that the movable rod 602 can elastically move in the spring slot 604, so that the two adjacent safety fences can be angle-locked and adjusted.

[0071] Specifically, the unlocking mechanism 5 unlocks the positioning rod 607, allowing the positioning rod 607 to be lifted up, so that the positioning rod 607 moves up and disengages from the positioning hole 608 on the movable rod 602, thereby allowing the movable rod 602 to move in the spring groove 604, and then the two interconnected safety fences can be rotated and adjusted in angle.

[0072] A strip groove 609 is provided on the through pipe 401, and a stopper 610 is provided on the top of the positioning rod 607;

[0073] The unlocking mechanism 5 includes a No. 3 spring 501 sleeved on the positioning rod 607, and an unlocking ring 502 sleeved on the outer circumference of the through pipe 401;

[0074] A locking surface 503 and an unlocking surface 504 are provided inside the unlocking ring 502 .

[0075] One end of the No. 3 spring 501 abuts against the stop block 610, and the other end of the No. 3 spring 501 abuts against the circumferential outer wall of the push rod 601, the surface where the unlocking ring 502 and the outer wall of the through tube 401 fit together is the locking surface 503, and the distance from the unlocking surface 504 to the center of the circle minus the distance from the locking surface 503 to the center of the circle needs to be greater than the depth of the positioning rod 607 inserted into the positioning hole 608, the No. 3 spring 501 and the stop block 610 both slide in the strip groove 609, and the length of the strip groove 609, the length of the No. 3 spring 501 and the stop block 610 moving in the strip groove 609, needs to be greater than the displacement of the connector 201 against the push rod 601.

[0076] Specifically, in the initial state, the locking surface 503 of the unlocking ring 502 corresponds to the block 610, and at this time, the block 610 is located inside the strip groove 609, so that the end of the positioning rod 607 away from the block 610 is plugged and positioned with the positioning hole 608 in the movable rod 602, and when the top rod 601 is pushed by the socket 201, the block 603 at one end of the movable rod 602 and the plurality of tooth blocks 310 are gap-engaged to achieve angle locking. It can be known here that the locking of the fence angle is achieved by connecting the subsequent fence to achieve the angle locking of the front fence connection position. When the fence connection angle needs to be adjusted later according to the construction situation, the unlocking ring 502 is rotated so that the unlocking surface 504 on the unlocking ring 502 corresponds to the block 610, and the elastic force of the No. 3 spring 501 pushes the positioning rod 607 upward, so that the movable rod 602 and the positioning rod 607 are separated, so that the movable rod 602 can be movable, thereby making the connection of the fence at this location adjustable in angle, and the subsequent fence needs to be disassembled to unlock the fence connection at this location for angle adjustment.

[0077] A retaining ring 505 is disposed on the outer wall of the through pipe 401 , and the retaining ring 505 is disposed on a side of the unlocking ring 502 away from the guardrail 1 .

[0078] By disposing the retaining ring 505 , the position of the unlocking ring 502 remains unchanged, so that the stopper 610 can correspond to the locking surface 503 and the unlocking surface 504 on the unlocking ring 502 .

[0079] The tooth block 310 is located inside the inner groove 309 , and the maximum diameter of the annular array tooth block 310 is smaller than the diameter of the latch rod 303 .

[0080] When the block 603 is pushed by the push rod 601 to engage with the gaps between the multiple tooth blocks 310 in the inner groove 309, because the block 603 and the gaps between the multiple tooth blocks 310 are located inside the inner groove 309, when the latch rod 303 is moved up and pulled out, the bottom end of the inner groove 309 will engage with the bottom end of the block 603 and cannot be pulled out, thereby making it impossible to disassemble the two interconnected fences. Therefore, the fence constructed by the present invention can only be disassembled from the rear fence forward.

[0081] Furthermore, when three or more safety fences are overlapped to form a closed ring, the rear fence will be connected to the first fence. It should be noted that when the rear fence and the first fence are connected, the latch rod 303 does not need to be plugged in. When the rear fence is connected to the first fence and the second-to-last fence, the details are as follows. Here, the above-mentioned three safety fences are taken as an example. Safety fence No. 1 is the first fence, safety fence No. 2 is the second-to-last fence, and safety fence No. 3 is the rear fence.

[0082] The socket 201 of the No. 3 safety fence is docked with the limit support rod 301 of the No. 2 safety fence, thereby pushing the top rod 601 of the No. 2 safety fence, so that the connection angle between the No. 1 safety fence and the No. 2 safety fence is locked. At this time, the connection between the No. 2 safety fence and the No. 3 safety fence is inserted into the latch rod 303, and then the unlocking ring 502 is rotated to make the movable rod 602 on the No. 3 safety fence active. At this time, the No. 3 safety fence is rotated to close the No. 3 safety fence and the No. 1 safety fence. The closure only requires the No. 3 safety fence. The limiting support rod on the fence and the socket 201 of the No. 1 safety fence correspond to each other, and there is no need to insert the pin rod 303. After the No. 3 safety fence and the No. 1 safety fence are rotated and closed, the unlocking ring 502 can be rotated to the locked state. Through the angle locking of the No. 1 safety fence and the No. 2 safety fence and the angle locking of the No. 2 safety fence and the No. 3 safety fence, the three safety fences cannot be rotated, thereby realizing a stable closed safety protection fence, and the No. 3 safety fence can be used as a switch door for entering and exiting the construction area by adjusting the unlocking ring 502.

[0083] In summary, the safety fence of the present invention not only improves the efficiency of overlapping fences at different angles and the efficiency of later disassembly, but also improves the stability and safety of the safety protection fence, avoiding the trouble of illegal disassembly by unauthorized personnel.

[0084] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, welding is preferred for all fixed connections. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A safety fence for river construction, comprising a guardrail (1), characterized in that: A plug-in sleeve mechanism (2) is provided on one side of the guardrail (1), and a plug-in mechanism (3) is provided on the side of the guardrail (1) away from the plug-in sleeve mechanism (2); the plug-in mechanism (3) and the plug-in sleeve mechanism (2) are matched and connected, and the plug-in mechanism (3) and the plug-in sleeve mechanism (2) can be rotated and adjusted after the matched connection; An angle locking mechanism (4) is provided between the plug-in mechanism (3) and the plug-in sleeve mechanism (2) on both sides of the guardrail (1), and the angle locking mechanism (4) penetrates into the plug-in sleeve mechanism (2) and is plugged into the plug-in mechanism (3) in the plug-in sleeve mechanism (2) for clamping; An unlocking mechanism (5) is arranged inside the angle locking mechanism (4), and the activity of the angle locking mechanism (4) is adjusted by means of the unlocking mechanism (5).

2. A safety fence for river construction according to claim 1, characterized in that: The plug-in sleeve mechanism (2) comprises a plug-in socket (201) arranged at the upper and lower ends of one side of the guardrail (1), and a plug-in hole (202) opened on the plug-in socket (201); The plug-in mechanism (3) comprises a limit support rod (301) arranged at the upper and lower ends of a side of the guardrail (1) away from the plug socket (201), a latch hole (302) opened at one end of the limit support rod (301), and a latch rod (303) movably plugged into the latch hole (302).

3. A safety fence for river construction according to claim 2, characterized in that: A protrusion (304) is provided at the top end of the limiting support rod (301) at the position of the pin hole (302), and a limiting groove (305) is provided on the protrusion (304); The top end of the latch rod (303) is provided with an anti-dropping block (306), and the top end of the anti-dropping block (306) is provided with a pull ring (307), and the bottom end of the anti-dropping block (306) is provided with a limiting block (308), and the limiting block (308) and the limiting groove (305) are matched and snap-connected.

4. A safety fence for river construction according to claim 3, characterized in that: An inner groove (309) is provided on the circumferential side wall of the latch rod (303), and tooth blocks (310) are provided in an annular array within the inner groove (309); the angle locking mechanism (4) enters the inner groove (309) and engages with the gap between the annular array tooth blocks (310) under the resistance of the socket (201).

5. A safety fence for river construction according to claim 4, characterized in that: The angle locking mechanism (4) comprises a through pipe (401) penetrating the guardrail (1), a locking assembly (6) arranged in the through pipe (401), and a first spring (402) arranged in the through pipe (401) and sleeved with the locking assembly (6); The socket (201) is provided with a movable groove (203), and the movable groove (203) and the locking assembly (6) are movably connected.

6. A safety fence for river construction according to claim 5, characterized in that: The locking assembly (6) comprises a push rod (601) disposed in the through pipe (401), a movable rod (602) disposed at one end of the push rod (601) close to the first spring (402), and a clamping block (603) disposed at one end of the movable rod (602) away from the push rod (601); The movable rod (602) and the movable groove (203) are movably matched and plugged, and the clamping block (603) and the plurality of tooth blocks (310) are intermittently clamped.

7. A safety fence for river construction according to claim 6, characterized in that: A spring groove (604) is provided at one end of the push rod (601) close to the movable rod (602), and the spring groove (604) and one end of the movable rod (602) are movably plugged into each other. A second spring (605) is provided inside the spring groove (604), and two ends of the second spring (605) are respectively fixedly connected to the bottom of the spring groove (604) and one end of the movable rod (602); The spring groove (604) is provided with a longitudinal through hole (606), and a positioning rod (607) is movably installed in the through hole (606); The movable rod (602) is provided with a positioning hole (608), and the positioning hole (608) and the positioning rod (607) are matched and plugged.

8. The safety fence for river construction according to claim 7 is characterized by: The through pipe (401) is provided with a strip groove (609), and the top end of the positioning rod (607) is provided with a stopper (610); The unlocking mechanism (5) comprises a No. 3 spring (501) sleeved on the positioning rod (607), and an unlocking ring (502) sleeved on the outside of the circumference of the through pipe (401); The unlocking ring (502) is provided with a locking surface (503) and an unlocking surface (504) inside.

9. A safety fence for river construction according to claim 8, characterized in that: A retaining ring (505) is provided on the outer wall of the through pipe (401), and the retaining ring (505) is arranged on a side of the unlocking ring (502) away from the guardrail (1).

10. A safety fence for river construction according to claim 9, characterized in that: The tooth blocks (310) are located inside the inner groove (309), and the maximum diameter enclosed by the annular array of tooth blocks (310) is smaller than the diameter of the latch rod (303).

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