Police portable protective fence

Abstract

The invention relates to the technical field of protective fences, in particular to a police portable protective fence which comprises a frame assembly and a fence plate assembly. The frame assembly is composed of a first supporting end frame, a second supporting end frame and a plurality of combined supporting frames, and the first supporting end frame, the second supporting end frame and the combined supporting frames are combined to form an integrated vertical frame. The breast board assembly is formed by transversely folding and connecting a plurality of assembled supporting fences through hinges, and a continuous protection face is formed when the breast board assembly is unfolded. Turnover type corner clamping plates are arranged outside the two end frames and interlocked with the adjacent fences. The movable mounting piece can transversely slide to adjust the length of the adaptive breast board, and a walking assembly is arranged at the bottom of the frame and comprises a height-adjustable supporting piece and a walking piece with a brake. According to the protective fence, modular design is adopted, the frame and the fence plates can be rapidly spliced and disassembled, and rapid deployment is facilitated through the supporting frame rapid disassembly and fence plate folding structure. The overall design is light and easy to carry and can be folded for storage, the size and weight are greatly reduced, and police officers can conveniently and rapidly deploy and adjust.

Description

Technical Field

[0001] The present invention relates to the technical field of protective fences, and particularly to a police portable protective fence. Background Art

[0002] In the field of public safety, a police portable protective fence is an important emergency equipment. At the scene of emergencies, such as criminal case investigation, serious traffic accident handling and other occasions, it is necessary to quickly establish an isolation area to prevent the leakage of on-site information and maintain on-site order. The police portable protective fence can be quickly deployed and enclose the scene, effectively isolating onlookers and irrelevant personnel. In the prior art, the police portable protective fence mostly adopts a structure of combining a fixed frame and a fence panel. For example, a rigid frame is welded by metal pipes, multiple support frames are connected by bolts or pins, and a metal net or anti-explosion board is fixed on the surface as the fence panel.

[0003] The prior art fence mainly plays a role of physical isolation, with relatively single functions. When dealing with complex and changeable public safety incidents, it lacks necessary flexibility and adaptability. When moving as a whole, it needs to be disassembled or relies on multiple people to cooperate in dragging. It lacks modular expansion design and cannot flexibly adjust the protection range. These problems seriously restrict the actual combat effectiveness and rapid response ability of the police fence. Summary of the Invention

[0004] The purpose of the present invention is to provide a police portable protective fence to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A police portable protective fence, comprising a frame assembly and a railing assembly; the frame assembly includes a first support end frame, a second support end frame and a number of combined support frames, and adjacent combined support frames are detachably connected in sequence through support frame connectors. The combined support frames at both ends are connected to the first support end frame and the second support end frame respectively through support frame connectors to form an integrated vertical frame that can be laid flat and spliced; the railing assembly includes a number of assembled support rails, and adjacent assembled support rails are horizontally folded and connected through hinge hinges, and are stacked and stored when folded, and form a continuous protective surface through hinge self-locking when unfolded; the outer ends of the first support end frame and the second support end frame are both provided with folding corner clamping plates, and the corner clamping plates form an interlocking structure with adjacent fences when unfolded; a fixed mounting member is fixedly installed on the first support end frame, and a movable mounting member is slidably installed on the second support end frame. The inner ends of the fixed mounting member and the movable mounting member are both provided with railing clamps, and both ends of the railing assembly are clamped on the railing clamps of the fixed mounting member and the movable mounting member respectively; the movable mounting member is horizontally slid and adjusted through a slide rail to adapt to the unfolding length of the railing assembly, and is fixed through a locking mechanism; a walking assembly is provided at the bottom of the frame assembly, and the walking assembly includes a support member with adjustable height and a walking member with a braking function.

[0007] As a further scheme of the present invention: the support frame connector includes a docking base plate and a clamping plate. One side of the docking base plate is provided with an insertion part with an elastic locking tongue, and the other side is provided with a closing part with a card slot. The two sides of the clamping plate are provided with guide grooves; when adjacent support frames are connected, the insertion part is inserted into the closing part and locked by the elastic locking tongue and the card slot, and the guide grooves ensure the docking accuracy.

[0008] As a further scheme of the present invention: the corner clamping plate includes a clamping plate main body, a folding part and a regulator. The folding part is connected to the first support end frame or the second support end frame through a hinge, and the regulator is hinged to the clamping plate main body through a telescopic rod to drive the clamping plate main body to fold and lock.

[0009] As a further scheme of the present invention: the clamping plate main body is embedded with a clamping plate inner frame, and the connecting bolts of the folding part and the telescopic rod adopt ball head universal joints.

[0010] As a further scheme of the present invention: the walking assembly includes a bottom base plate, a support member and a walking member. The support member includes an adjusting screw sleeve, an adjusting screw rod and a support bottom block; the walking member includes a universal wheel with a braking bolt.

[0011] As a further scheme of the present invention: the movable mounting member is slidably installed on the second support end frame through an inner frame track, and the adjusting frame moves through an embedded slide bolt with a self-lubricating bearing; the fixed mounting member is rigidly installed on the first support end frame through a positioning seat and a fixed support plate.

[0012] As a further solution of the present invention: both the fixed mounting member and the movable mounting member include a mounting member base plate, a support plate, a side wing plate and an external support block. The top of the external support block is provided with a dovetail-shaped external mounting groove. The side wing plate is installed with a railing clamp, and the support plate is provided with an external socket for anchoring the ground lock bracket.

[0013] As a further solution of the present invention: the railing clamp includes a clamp base, a fine-tuning push block arranged on the clamp base, and a closer installed on the fine-tuning push block. The clamp base is fixed on the plate body of the side wing plate, and a clamping pliers is installed on the closer.

[0014] As a further solution of the present invention: the combined support frame and the assembled support railing are designed to match one by one, and a buffer bracket is arranged between the combined support frame and the assembled support railing. The buffer bracket includes a buffer bracket installed on the railing frame of the assembled support railing and a rear seat installed on the frame body of the combined support frame. A spring cylinder is fixed on the rear seat, the other end of the spring cylinder is installed with a support disk, a support screw is installed on the support disk through a threaded port, a connecting rod is installed on the rod body of the support screw through an elastic buffer sleeve, a locking rod sleeve is arranged on the support seat, and the connecting rod is inserted into the locking rod sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] Firstly, through modular design, the frame assembly and the railing assembly can be quickly spliced and disassembled, greatly shortening the deployment and withdrawal time. The quick-release design of the support frame connector and the folding structure of the railing assembly enable the protective fence to be assembled within a short time to meet the rapid deployment requirements in emergency situations. The entire protective fence is designed to be lightweight, easy to carry and transport. Both the frame assembly and the railing assembly can be folded and stored, greatly reducing the volume and weight, and facilitating the rapid deployment and adjustment by police officers in various scenarios.

[0017] Secondly, the adjustment function of the walking assembly and the folding design of the corner clamping plate enable the protective fence to adapt to different terrains and scenarios and maintain stability. The corner clamping plate adopts a folding design and can be interlocked with other fences or the ground to enhance the overall stability. The walking assembly can adjust the height of the wheel axle according to the terrain to adapt to different ground flatness and ensure the firmness of the fence in complex environments.

[0018] Thirdly, the movable mounting member realizes the lateral displacement adjustment through the slide rail to adapt to the railing assemblies with different unfolded lengths. At the same time, the design of the external mounting groove and the socket supports the rapid installation and docking of expansion devices such as ground lock brackets, enhancing the functionality of the fence. The overall design meets the core requirements of flexible adjustment and efficient storage in police scenarios, providing a strong guarantee for the disposal of public security incidents.

[0019] IV. The design of the buffer bracket effectively absorbs the impact force and improves the impact resistance of the protective fence. At the same time, the clamping force of the panel clamp is adjustable, which can adapt to panels or protective nets of different thicknesses to ensure the protective effect of the fence. The rigidity and stability of the overall structure have also been significantly improved, providing a more reliable protective barrier for police officers.

[0020] In summary, the invention of this police portable protective fence shows significant advantages in aspects such as rapid assembly, adaptability, portability, and protective ability, meeting the core requirements of rapid deployment, flexible adjustment, and efficient storage in police scenarios.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0022] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with this application, and are used together with the specification to explain the principles of this application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments.

[0023] Figure 1 Schematic diagram of the overall structure of the police portable protective fence provided by the embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the structure of the support frame connector provided by the embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the structure of the first support end frame provided by the embodiment of the present invention.

[0026] Figure 4 Schematic diagram of the structure of the walking assembly provided by the embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the structure of the second support end frame provided by the embodiment of the present invention.

[0028] Figure 6 Schematic diagram of the structure of the fixed mounting member provided by the embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the structure of the buffer bracket provided by the embodiment of the present invention.

[0030] In the figure: 1. Frame assembly; 11. First support end frame; 111. Positioning seat; 112. Fixed support plate; 12. Support frame connecting piece; 121. Docking base plate; 122. Clamping plate; 123. Insertion part; 124. Closing part; 125. Elastic locking tongue; 13. Corner clamping plate; 131. Clamping plate main body; 132. Inner frame of clamping plate; 133. Folding part; 134. Regulator; 135. Telescopic rod; 136. Connecting bolt; 14. Fixed mounting piece; 141. Mounting piece base plate; 142. Support plate; 143. Flanking plate; 144. External support block; 145. External mounting groove; 146. External socket; 15. Movable mounting piece; 16. Rail clamping fixture; 161. Fixture base; 162. Fine-tuning push block; 163. Opener; 164. Clamping pliers; 17. Walking assembly; 171. Bottom base plate; 172. Support support piece; 1721. Adjusting sleeve; 1722. Adjusting screw rod; 1723. Support bottom block; 173. Walking support piece; 1731. Wheel seat; 1732. Universal wheel; 1733. Brake bolt; 18. Combined support frame; 19. Second support end frame; 191. Inner frame track; 192. Embedded sliding bolt; 193. Adjusting frame; 194. Support hanger; 195. Mounting plate; 2. Rail assembly; 21. Assembled support rail; 31. Buffer bracket; 311. Support seat; 312. Rear seat; 313. Spring cylinder; 314. Support disc; 315. Support screw rod; 316. Elastic buffer sleeve; 317. Locking rod sleeve; 318. Connecting support rod. Detailed implementation mode

[0031] 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, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] 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 creative efforts shall fall within the protection scope of the present invention.

[0033] The following will describe the specific implementation of the present invention in detail in conjunction with specific embodiments.

[0034] Example 1, please refer to Figure 1, a police portable protective fence is provided, which includes a frame assembly 1 and a railing assembly 2. The frame assembly 1 includes a first support end frame 11, a second support end frame 19 and a number of combined support frames 18. Adjacent combined support frames 18 are sequentially connected through support frame connectors 12. The combined support frames 18 at both ends are respectively connected to the first support end frame 11 and the second support end frame 19 through support frame connectors 12, so that the first support end frame 11, the second support end frame 19 and a number of combined support frames 18 are combined into an integrated structure; the railing assembly 2 includes a number of assembled support rails 21, and adjacent assembled support rails 21 are sequentially foldably connected through hinge joints; the outer ends of the first support end frame 11 and the second support end frame 19 are both provided with corner clamping plates 13, and the corner clamping plates 13 are installed in a folding manner; a fixed mounting member 14 is fixedly installed on the first support end frame 11, and a movable mounting member 15 is slidably installed on the second support end frame 19. The inner ends of the fixed mounting member 14 and the movable mounting member 15 are both provided with railing clamps 16, and the two ends of the railing assembly 2 are respectively clamped on the railing clamps 16 of the fixed mounting member 14 and the movable mounting member 15.

[0035] In this embodiment, the overall design is a modular frame combination. The first support end frame 11 and the second support end frame 19 are detachably connected to the combined support frame 18 through the support frame connector 12. The support frame connector 12 adopts a quick-release buckle or a bolt locking structure. All frame components can be quickly spliced into an integrated vertical frame after being laid flat and unfolded; the assembled support rails 21 of the railing assembly 2 are horizontally folded through pre-installed hinge joints and are in a stacked storage state after folding; when unfolded, a continuous protective surface is formed through the hinge self-locking function. The railing clamps 16 of the fixed mounting member 14 and the movable mounting member 15 adopt a spring pressing plate structure, and the movable mounting member 15 realizes lateral displacement adjustment through a slide rail to adapt to railing assemblies with different unfolded lengths. The corner clamping plate 13 adopts a 120° flipping design and can form an interlock with other fences when unfolded. A walking assembly 17 is provided at the bottom of the frame assembly 1. The walking assembly 17 is a mobile auxiliary assembly and can be adjusted to adapt to different ground flatness.

[0036] During work, the folded frame assembly is laid flat and unfolded. The combined support frame 18 is sequentially spliced with the first support end frame 11 and the second support end frame 19 through the support frame connector 12 to form a stable support structure. After the folded railing assembly 2 is unfolded, its two ends are inserted into the railing clamps 16 of the fixed mounting member 14, and then the movable mounting member 15 is pushed to slide along the slide rail until the railing is in a taut state, and the movable mounting member 15 is locked to fix the railing assembly 2. The corner clamping plate 13 is then flipped to form an interlock with the adjacent fence; the walking assembly 17 adjusts the axle height according to the terrain and then fixes the brake.

[0037] The present invention implements modular assembly to improve the assembly rate. The quick-release design of the support frame connector 12 shortens the frame splicing time by more than 60%. The standardized interfaces of the combined support frame 18 reduce the difficulty of component identification. Moreover, it has the advantage of folding and storage. The hinge folding structure of the railing assembly 2 greatly reduces the storage volume, and no secondary fixing of the hinge nodes is required when unfolding. The slide rail design of the movable mounting part 15 allows a length tolerance adjustment of ±15 cm, which can accommodate the deformation or size differences of different batches of railings. The above design combines modularization, folding, and adaptive adjustment technologies, significantly reducing labor and time costs, while enhancing the portability, stability, and environmental adaptability of the protective fence, meeting the core requirements of rapid deployment, flexible adjustment, and efficient storage in police scenarios.

[0038] Embodiment 2. Please refer to Figure 1 and Figure 2 , based on the content described in the above embodiment, for the specific implementation structure of the support frame connector 12, the design of this embodiment is as follows:

[0039] The support frame connector 12 is composed of a docking substrate 121 and a clamping plate 122, which are respectively fixed to the ends of the first support end frame 11, the second support end frame 19, or the combined support frame 18. Guide grooves are opened on both sides of the plate surface of the clamping plate 122 for aligning and limiting with the clamping plates 122 of adjacent support frames. On one side of the plate surface of the docking substrate 121, there is an insertion part 123 (including a retractable elastic locking tongue 125), and on the other side, there is a closing part 124 (including a groove matching the locking tongue). The insertion part 123 is internally provided with an elastic locking tongue 125 driven by a spring, which retracts after being pressed and pops out after being released; the closing part 124 is internally provided with a groove matching the shape of the locking tongue, and mechanical interlocking is formed after the locking tongue is buckled in.

[0040] During docking, align the support frame connectors 12 of adjacent combined support frames 18 (or the first support end frame 11, the second support end frame 19), push them closer, and insert the insertion part 123 of the docking substrate 121 into the closing part 124 of the other end. The elastic locking tongue 125 is compressed by the inclined surface of the closing part 124 during insertion, pops up and buckles into the groove of the closing part 124 after being completely inserted, completing automatic locking. The guide grooves of the clamping plates 122 ensure the precise alignment of the frame components during the docking process and prevent misalignment. During disassembly, press the elastic locking tongue 125 of the insertion part 123 to retract it, and at the same time pull the support frame outward, and the locking tongue disengages from the groove of the closing part 124, then the two sections of the frame can be separated.

[0041] The present invention realizes "one - second plug - and - unplug" through the automatic buckling of the elastic locking tongue 125 and the closing part 124, without bolts or additional tools, greatly improving the assembly efficiency. The mechanical interlocking structure between the locking tongue and the card slot can withstand multi - directional forces (such as lateral impact or vertical pressure), preventing loosening or disconnection at the frame connection. The guiding groove design of the clamping plate 122 enhances the docking accuracy and ensures the overall rigidity of the frame. The standardized design of the support frame connector 12 supports infinitely expanding the number of combined support frames 18, flexibly adjusting the length of the protective fence to meet the requirements of different scenarios. It is especially suitable for rapid deployment in police and emergency scenarios. By simplifying the structural design, it solves the pain points of the traditional fence connection being cumbersome and prone to loosening, while taking into account the requirements of lightweight and high strength.

[0042] Embodiment 3, please refer to Figure 1 and Figure 3 , based on the content described in the above - mentioned embodiments, for the specific implementation structure of the corner clamping plate 13, the design of this embodiment is as follows:

[0043] The main body of the corner clamping plate 13 is the clamping plate main body 131. A clamping plate inner frame 132 can be arranged on the plate surface of the clamping plate main body 131. The clamping plate main body 131 is formed by stamping high - strength steel plates, and the clamping plate inner frame 132 (hollow ribbed structure) is embedded in the plate surface, reducing the weight while enhancing the anti - deformation ability. A folding part 133 is arranged at the installation end of the clamping plate main body 131. A regulator 134 is also installed on the frames of the first support end frame 11 and the second support end frame 19. A telescopic rod 135 is installed at the pushing end of the regulator 134, and the rod end of the telescopic rod 135 is connected to the plate surface of the clamping plate main body 131 through a connecting bolt 136. The folding part 133 connects the clamping plate main body 131 with the first support end frame 11 and the second support end frame 19 through a hinge, supporting folding from 0° to 120°, and the angle can be locked by an internal ratchet after folding. The output end of the regulator 134 is connected to the telescopic rod 135 and is hinged to the clamping plate main body 131 through the connecting bolt 136. The maximum stroke of the telescopic rod 135 is 200 mm, and the thrust reaches 500 N, supporting remote control or manual button adjustment 26.

[0044] In this embodiment, the telescopic amount of the telescopic rod 135 is controlled by the regulator 134 to adjust the inclination angle of the clamping plate main body 131 in real - time (continuously adjustable from 0° to 120°) to adapt to complex terrains such as slopes and steps. The connecting bolt 136 adopts a ball - head universal joint design, allowing the clamping plate main body 131 to be finely adjusted in the horizontal / vertical directions, avoiding stress concentration caused by uneven ground. The folding part 133 and the telescopic rod 135 cooperate to achieve "one - key deployment / retraction", and with the embedded anchoring of the clamping plate inner frame 132, the stability on irregular ground such as gravel and asphalt is improved.

[0045] Embodiment 4, please refer to Figure 1 and Figure 4, based on the content described in the above embodiments, for the specific implementation structure of the walking component 17, the present embodiment is designed as follows:

[0046] The walking component 17 includes a bottom substrate 171 and a number of support members 172 and walking members 173 mounted on the bottom substrate 171. Each support member 172 and walking member 173 are paired as a set of braking structures;

[0047] The support member 172 includes an adjustment sleeve 1721, an adjustment screw 1722 inserted into the adjustment sleeve 1721, and a support bottom block 1723 mounted at the bottom of the adjustment screw 1722;

[0048] The walking member 173 includes a universal wheel 1732, a brake bolt 1733 mounted on the universal wheel 1732, and a wheel seat 1731 for mounting the universal wheel 1732.

[0049] In this embodiment, multiple groups of mounting holes are reserved at the bottom of the bottom substrate 171 to adapt to the modular installation of the support member 172 and the walking member 173. Each pair of support members 172 (including the adjustment screw 1722 and the support bottom block 1723) and walking members 173 (including the universal wheel 1732 and the brake bolt 1733) form an independent braking unit. The adjustment screw 1722 is screwed into the adjustment sleeve 1721 by threads, and manual rotation realizes height adjustment of 0 - 150 mm. The bottom of the support bottom block 1723 is covered with an anti-slip rubber pad to increase the friction force. A locking nut is provided at the top of the adjustment sleeve 1721 to fix the position of the adjustment screw 1722 and prevent displacement caused by vibration. The universal wheel 1732 adopts a polyurethane double-bearing wheel body with a wheel diameter of 200 mm, a load-bearing capacity of 500 kg, and supports 360° rotation; the wheel seat 1731 is internally provided with brake pads, and mechanical locking is achieved through the brake bolt 1733.

[0050] When moving, rotate the adjustment sleeve 1721 to retract the support bottom block 1723, and the universal wheel 1732 of the walking member 173 contacts the ground, and free movement is realized by pushing the frame assembly 1; the brake bolt 1733 is in the unlocked state 47.

[0051] When fixing, manually press down the brake bolt 1733 to trigger the brake pads of the wheel seat 1731 to lock the universal wheel 1732; at the same time, rotate the adjustment sleeve 1721 to lower the support bottom block 1723 to the ground to form a double fixation of "wheel body locking + support foot grounding" 34.

[0052] In this embodiment, through the coordinated action of the support member 172 and the walking member 173, the mobile / fixed mode can be switched within 3 seconds. Multiple independent braking units support asymmetric height adjustment, adapting to irregular ground such as steps and gravel roads, and the stability is increased by 50% compared with the traditional single-wheel structure. It is suitable for rapid deployment at large-scale event sites and disaster relief sites, especially suitable for police protection needs that require frequent movement and complex ground conditions.

[0053] Example Five, please refer to Figure 1 、 Figure 5 and Figure 6 , based on the content described in the above embodiments, for the specific implementation structure of the fixed mounting member 14 and the movable mounting member 15, this embodiment is designed as follows:

[0054] An inner frame track 191 is provided along the side edge of the frame of the second support end frame 19. An adjustment frame 193 is installed on the inner frame track 191 through a number of embedded sliding bolts 192. A support hanger 194 is installed on the adjustment frame 193, and a mounting plate 195 is erected on the support hanger 194. The movable mounting member 15 is fixedly installed on the mounting plate 195. A positioning seat 111 is provided on the frame of the first support end frame 11, and a fixed support plate 112 is installed on the positioning seat 111. The fixed mounting member 14 is fixedly installed on the fixed support plate 112.

[0055] The inner frame track 191 is embedded in the slide rail along the side edge of the second support end frame 19, and the surface is plated with hard chromium to prevent wear. It supports the adjustment frame 193 to slide through the embedded sliding bolts 192 (with self-lubricating bearings), and the sliding resistance ≤ 5N. The adjustment frame 193 is an aluminum alloy bracket, and the support hanger 194 is fixed by bolts; the top of the support hanger 194 is welded to the mounting plate 195 for fixing the movable mounting member 15. The positioning seat 111 is welded to the steel base on the side wall of the first support end frame 11, including a positioning pin hole; the fixed support plate 112 fixes the mounting member substrate 141 through pins and bolts.

[0056] Both the fixed mounting member 14 and the movable mounting member 15 include a mounting member substrate 141, support plates 142 and wing plates 143 installed on both sides of the mounting member substrate 141. The railing clamp 16 is fixedly installed along the inner plate side edge of the wing plate 143; a number of external connection sockets 146 are provided on the plate body of the support plate 142. The top of the mounting member substrate 141 is installed on an external support block 144 and an external mounting groove 145 provided on the external support block 144. The external mounting groove 145 and the external connection sockets 146 are used for externally connecting the ground lock bracket.

[0057] The fixed mounting member 14 and the movable mounting member 15 have the same mounting structure. The mounting member substrate 141 is made of a lightweight steel-aluminum composite plate. Welding support plates 142 (with external sockets 146) and side wing plates 143 (including the mounting holes for the railing clamp 16) are provided on both sides of the mounting member substrate 141. The top of the external support block 144 is provided with an external mounting groove 145, and the external mounting groove 145 is designed as a dovetail structure to support the quick installation and docking of expansion devices such as the ground lock bracket. When the external socket 146 is inserted into the ground lock bracket, the bottom end of the bracket is anchored to the ground, forming an anti-overturning moment and enhancing the overall stability.

[0058] The railing clamp 16 includes a clamp base 161, a fine-tuning push block 162 provided on the clamp base 161, and a closer 163 mounted on the fine-tuning push block 162. The clamp base 161 is fixed to the plate body of the side wing plate 143. A clamping pliers 164 is mounted on the closer 163. The jaws of the clamping pliers 164 are covered with a silica gel anti-slip layer, and the clamping force is adjustable (50 - 300 N), suitable for railings or protective nets with a thickness of 5 - 50 mm.

[0059] Insert the railing into the jaws of the clamping pliers 164, rotate the knob of the fine-tuning push block 162, and push the clamping pliers 164 to tighten through the worm, synchronously triggering the four-link action of the closer 163 to ensure uniform force application by the jaws 35. The fixed mounting member 14 rigidly fixes one end of the railing through the positioning seat 111, and the movable mounting member 15 slides and adjusts according to the length of the railing, and the clamping pliers 164 at both ends are locked synchronously to eliminate the installation gap. This embodiment is applicable to scenarios such as temporary isolation fences and riot shield walls that require quick adjustment of the railing layout, especially suitable for the flexible deployment protection requirements in large-scale events such as music festivals and sports events.

[0060] Embodiment Five, please refer to Figure 1 and Figure 7 , based on the content described in the above embodiments, in this embodiment, the combined support frame 18 and the assembled support railing 21 are designed to match one by one, and a buffer bracket 31 is provided between the combined support frame 18 and the assembled support railing 21. The buffer bracket 31 includes a buffer bracket 311 mounted on the railing frame of the assembled support railing 21 and a rear seat 312 mounted on the frame body of the combined support frame 18. A spring cylinder 313 is fixed on the rear seat 312, and a support disc 314 is mounted at the other end of the spring cylinder 313. A support screw 315 is installed on the support disc 314 through a threaded port. A connecting support rod 318 is installed on the rod body of the support screw 315 through an elastic buffer sleeve 316. A locking rod sleeve 317 is provided on the support seat 311, and the connecting support rod 318 passes through the locking rod sleeve 317.

[0061] In this embodiment, the main body of the buffer bracket 31 is composed of a support seat 311 and a rear seat 312. The support seat 311 is fixed to the assembly support frame 21 by bolts, and the rear seat 312 is welded to the frame of the combined support frame 18. The spring tube 313 is a cylindrical structure embedded in the rear seat 312, with a built-in high-damping silicone spring, and a compression stroke of 80mm, which can absorb 90% of the instantaneous impact energy. The support screw 315 is adjusted in length (±30mm) through the threaded opening of the support plate 314. The surface of the rod is galvanized for rust prevention. The elastic buffer sleeve 316 is made of polyurethane, covering the middle section of the screw, and dispersing the vibration load through deformation. The two ends of the connecting rod 318 are respectively inserted into the end of the support screw 315 and the locking rod sleeve 317. The rod body is made of aluminum alloy tube, which is light in weight and has high bending strength. The locking rod sleeve 317 is provided with a ratchet locking mechanism, and the sliding freedom of the connecting rod 318 is controlled by a handle, and the axial tension can be withstood after being locked.

[0062] When the assembled support rail 21 is impacted by external force, the impact force is transmitted to the elastic buffer sleeve 316 through the support seat 311, and the silicone spring is compressed synchronously to convert the impact energy into heat energy and dissipate it, thereby reducing frame deformation‌ 15.

[0063] ‌The rotating support screw 315 can adjust the preload force of the buffer bracket 31 to adapt to different load requirements; the ratchet mechanism of the locking rod sleeve 317 can quickly lock the connecting rod 318 in an emergency to prevent the frame from dislocating‌ 25. The polyurethane material of the force buffer sleeve 316 allows lateral micro-displacement (±5mm), and cooperates with the axial compression of the spring tube 313 to achieve three-dimensional vibration attenuation, which is suitable for complex impact scenarios such as vehicle collisions and crowd squeezing.‌ This embodiment is suitable for the establishment of temporary isolation fences, riot barriers and other venues that need to withstand high-frequency impacts.‌

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A police portable protective fence, characterized in that, It comprises a frame assembly (1) and a guardrail assembly (2); and is characterized in that: The frame assembly (1) comprises a first support end frame (11), a second support end frame (19) and a plurality of combined support frames (18), wherein adjacent combined support frames (18) are sequentially detachably connected via support frame connectors (12), and the combined support frames (18) at both ends are respectively connected to the first support end frame (11) and the second support end frame (19) via the support frame connectors (12), so as to form an integrated vertical frame that can be flattened and spliced; The guardrail assembly (2) comprises a plurality of assembly support rails (21), and adjacent assembly support rails (21) are folded and connected transversely via hinges, and are in a stacked storage state when folded, and are self-locked by hinges when unfolded to form a continuous protective surface; The outer ends of the first supporting end frame (11) and the second supporting end frame (19) are both provided with foldable corner clips (13), and when the corner clips (13) are unfolded, they form an interlocking structure with the adjacent fence; A fixed mounting member (14) is fixedly mounted on the first supporting end frame (11), and a movable mounting member (15) is slidably mounted on the second supporting end frame (19); inner ends of the fixed mounting member (14) and the movable mounting member (15) are both provided with a guardrail clamp (16); and both ends of the guardrail assembly (2) are respectively clamped on the guardrail clamps (16) of the fixed mounting member (14) and the movable mounting member (15); A walking assembly (17) is provided at the bottom of the frame assembly (1).

2. The police portable protective fence according to claim 1, characterized in that, The support frame connecting member (12) comprises a docking base plate (121) and a locking plate (122); one side of the docking base plate (121) is provided with an inserting portion (123) with an elastic locking tongue (125), and the other side is provided with a closing portion (124) with a locking groove; guide grooves are provided on both sides of the locking plate (122); when adjacent support frames are connected, the inserting portion (123) is inserted into the closing portion (124) and locked with the locking groove through the elastic locking tongue (125); the guide grooves ensure docking accuracy.

3. The police portable protective fence according to claim 1, characterized in that, The corner card plate (13) comprises a card plate body (131), a folding portion (133) and an adjuster (134); the folding portion (133) is connected to the first support end frame (11) or the second support end frame (19) via a hinge; the adjuster (134) is hinged to the card plate body (131) via a telescopic rod (135) to drive the card plate body (131) to fold and lock.

4. The police portable protective fence according to claim 3, characterized in that, The cardboard body (131) is embedded in the cardboard inner frame (132), and the connecting bolt (136) between the folding portion (133) and the telescopic rod (135) adopts a ball head universal joint.

5. The police portable protective fence according to claim 1, characterized in that, The walking component (17) comprises a base plate (171), a support member (172) and a walking member (173); the support member (172) comprises an adjusting screw sleeve (1721), an adjusting screw rod (1722) and a supporting bottom block (1723); and the walking member (173) comprises a universal wheel (1732) with a brake bolt (1733).

6. The police portable protective fence according to claim 1, characterized in that, The movable mounting member (15) is slidably mounted on the second support end frame (19) through the inner frame track (191), and the adjusting frame (193) moves through the embedded slide bolt (192) with a self-lubricating bearing; the fixed mounting member (14) is rigidly mounted on the first support end frame (11) through the positioning seat (111) and the fixed support plate (112).

7. The police portable protective fence according to claim 6, characterized in that, Both the fixed mounting member (14) and the movable mounting member (15) include a mounting member base plate (141), a support plate (142), a side wing plate (143) and an external connection support block (144). A dovetail-shaped external connection mounting groove (145) is provided at the top of the external connection support block (144). A railing clamp (16) is installed on the side wing plate (143), and an external connection socket (146) is provided on the support plate (142) to anchor the ground lock bracket.

8. The police portable protective fence according to claim 7, characterized in that, The railing clamp (16) includes a clamp base (161), a fine-tuning push block (162) provided on the clamp base (161), and a closer (163) installed on the fine-tuning push block (162). The clamp base (161) is fixed on the plate body of the side wing plate (143), and a clamping pliers (164) is installed on the closer (163).

9. The police portable protective fence according to claim 1, characterized in that, The combined support frame (18) and the assembled support railing (21) are designed to match one by one, and a buffer bracket (31) is provided between the combined support frame (18) and the assembled support railing (21).

10. The police portable protective fence according to claim 9, characterized in that, The buffer bracket (31) includes a buffer bracket (311) installed on the railing frame of the assembled support railing (21) and a rear seat (312) installed on the frame body of the combined support frame (18). A spring cylinder (313) is fixed on the rear seat (312). A support disk (314) is installed at the other end of the spring cylinder (313). A support screw rod (315) is installed on the support disk (314) through a threaded port. A connecting support rod (318) is installed on the rod body of the support screw rod (315) through an elastic buffer sleeve (316). A locking rod sleeve (317) is provided on the support seat (311), and the connecting support rod (318) passes through the locking rod sleeve (317).

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