Protective fence

Abstract

The invention discloses a protective fence which comprises a plurality of fence plates and a plurality of movable supporting columns, the fence plates and the movable supporting columns are distributed in a staggered mode, and the fence plates are movably connected with the movable supporting columns. A universal clamping device used for adjusting the included angle between the breast board and the movable supporting column is arranged between the breast board and the movable supporting column. The fence plate and the movable supporting column are connected into a whole through the universal clamping device, the universal clamping device is composed of two parts, disassembly and assembly are convenient, transportation is also convenient, after the fence plate and the movable supporting column are connected, the position of the protective fence can be moved through the movable supporting column, the movable supporting column can be pushed, and the rotating angle of the universal clamping device can be changed. Therefore, the overall shape of the protective fence is adjusted, and the applicability is high.

Description

Technical Field

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

[0002] The invention patent with patent number CN115405155A (publication date 2022.11.29) discloses a building construction guardrail and a construction method thereof, which includes several first guardrails and a second guardrail. Several first guardrails are spliced ​​with each other along the length direction of the first guardrail, and the second guardrail is spliced ​​with the last first guardrail. A first clamping block is provided on one side of the first guardrail in the length direction, and a first clamping groove is provided on the other side of the first guardrail. The first guardrail and the second guardrail are both provided with a limiting component for fixing to the first clamping block of the previous first guardrail. The first guardrail is provided with a first control component for controlling the fixed state of the first guardrail and the first clamping block, and the second guardrail is provided with a second control component for controlling the fixed state of the second guardrail on the first clamping block.

[0003] The aforementioned patent, as a mobile guardrail for use in areas with a short construction period, improves guardrail installation efficiency. However, it still has shortcomings in terms of movement and installation. First, after connecting two adjacent first guardrails through the first clamping slots and the first clamping blocks, they still need to be fixed with plug bolts, which to a certain extent reduces installation efficiency. Second, the support plate is used horizontally and is in contact with the ground. When moving, it not only creates significant resistance to the ground but also produces harsh noise. Therefore, further improvements are needed to this mobile guardrail to achieve better installation, disassembly, transportation, and movement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: Thus, a guardrail is provided, which has better installation, disassembly, transportation and movement effects than traditional movable guardrails.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A guardrail comprises a guardrail plate and a movable support column, wherein a plurality of guardrail plates and movable support columns are provided, wherein the guardrail plates and movable support columns are staggered and arranged, and the guardrail plates and movable support columns are movably connected; A universal clamping device for adjusting the angle between the guardrail and the movable support is provided between the guardrail and the movable support.

[0006] Preferably: the universal clamping device includes Upper link mechanism, connected to the guardrail or movable support; A lower link mechanism connected to the movable support or guardrail; When the guardrail rotates with the movable pillar as the center, the upper link mechanism and the lower link mechanism can rotate relatively; when the guardrail and the movable pillar are fixed at a specific angle, the upper link mechanism and the lower link mechanism are engaged.

[0007] Preferably, the lower link mechanism includes a lower honeycomb seat, a plurality of pistons, and a plurality of compression springs. A cavity is defined within the lower honeycomb seat. A honeycomb hole communicating with the cavity is defined on the upper end surface of the lower honeycomb seat, and a piston is inserted into each hole. The plurality of compression springs are provided in a one-to-one correspondence with the plurality of pistons. One end of the compression spring abuts against the piston, and the other end abuts against the bottom wall of the cavity. The top end of the piston extends outside the hole, and the bottom end of the piston extends into the cavity, and is provided with an end head with an outer diameter larger than the hole. The upper link mechanism includes an upper end cap and a clamping column. The lower end surface of the upper end cap is provided with a circular groove for being sleeved on the lower honeycomb seat. The top end of the clamping column is embedded in the circular groove, and the bottom end of the clamping column is used to abut against one or more pistons when the upper end cap is pressed down.

[0008] Preferably: the universal clamping device also includes a tripping mechanism, the tripping mechanism includes a pressure plate and a traction member, the pressure plate is provided with a plurality of through holes, and the plurality of through holes are arranged in a one-to-one correspondence with the holes of the honeycomb holes, the end of the piston is located at the bottom of the pressure plate and is against the lower end surface of the pressure plate, and the traction member is connected to the pressure plate for driving the pressure plate to move downward.

[0009] Preferably: the traction member is set to be a soft rod shape, and the tripping mechanism also includes a locking assembly, and the locking assembly includes a shell, a pair of cylindrical lock cores, a return spring and a top plate, and a cavity with a conical cross-section is provided in the shell, and the end with a smaller inner diameter of the cavity is a feed locking end, and the top of the shell is provided with a through hole communicating with the cavity, and a pair of cylindrical lock cores are provided in the cavity and distributed on both sides of the through hole, and the top plate and the return spring are both arranged at the bottom of a pair of cylindrical lock cores, the top of the return spring abuts against the top plate, and the other end abuts against the bottom wall of the cavity, and a sliding sleeve is provided on the outside of the shell, and an unlocking rod is provided on the inner wall of the sliding sleeve, and the other end of the unlocking rod extends to the top of the cylindrical lock core, and a sliding groove communicating with the cavity is provided on the outer wall of the shell for the unlocking rod to slide up and down therein.

[0010] Preferably, the universal clamping device includes an upper turntable, a lower turntable, a locking bolt and a bearing; an expansion boss is coaxially provided on the top of the lower turntable; the bearing is coaxially fixed on the expansion boss; the upper turntable is annular, and its inner ring is sleeved on the bearing; The upper turntable is provided with a plurality of lock holes, which are evenly spaced circumferentially distributed on the upper turntable. The lower turntable is provided with a bolt hole. When the upper turntable and the lower turntable rotate relative to each other, the bolt hole is coaxial with one of the lock holes, and the lock bolt passes through the coaxial lock hole and bolt hole.

[0011] Preferably: the universal clamping device also includes a positioning mechanism, the positioning mechanism, the axis of the upper turntable, and the axis of one of the lock holes are located on the same straight line, the upper turntable is provided with a positioning hole for the positioning mechanism to be installed therein, the positioning mechanism includes an elastic member, a top cap and a positioning ball, the top cap is threadedly connected to the top opening of the positioning hole, part of the positioning ball protrudes from the bottom of the positioning hole to its outside, the elastic member is installed between the top cap and the positioning ball, and is in an elastic deformation state, the upper end surface of the lower turntable is provided with a positioning groove for cooperating with the positioning ball, the positioning grooves with the same number as the lock holes are equidistantly spaced circumferentially on the lower turntable, and are all on the rotation path of the positioning mechanism, when one of the lock holes is coaxial with the bolt hole, the positioning ball is stuck in one of the positioning grooves.

[0012] Preferably: the movable pillar includes a column, a base and a universal caster with a brake function, the base is fixed to the lower end of the column, the universal caster is fixed below the base, the column has at least one pair of pull ears, the pair of pull ears are symmetrically arranged about the central axis of the column, and the universal clamping device is installed on the pull ears.

[0013] Preferably: a side support column is also provided on the movable pillar, and the side support column includes an outer column and an inner column, the top end of the outer column is hinged to the column rod axis pin, and the inner column is slidably connected to the outer column, and a guide groove is provided on the outer column, and the guide groove extends along the length direction of the outer column, and a locking bolt threadedly connected to the inner column is provided in the guide groove.

[0014] Preferably, a plurality of windows are provided on the railing, and a protective net is provided in the window at the bottom.

[0015] The beneficial effects of the present invention are: the guardrail and the movable pillar are connected as one through a universal clamping device, and the universal clamping device consists of two parts, which is relatively convenient to disassemble and assemble, and also convenient for transportation. After the guardrail is connected to the movable pillar, the position of the guardrail can be moved by the movable pillar, and the movable pillar can also be pushed and the rotation angle of the universal clamping device can be changed, so as to adjust the overall shape of the guardrail, and it has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a partial schematic diagram of the assembled guardrail; Figure 2 A schematic diagram of a protective fence enclosed in a square; Figure 3This is a schematic diagram of the installation method of the mobile support; Figure 4 Schematic diagram of the universal clamping device in Example 1 Figure 1 ; Figure 5 Schematic diagram of the universal clamping device in Example 1 Figure 2 ; Figure 6 Schematic diagram of the universal clamping device in Example 1 Figure 3 ; Figure 7 is a schematic diagram of the pressure plate; Figure 8 is a schematic diagram of a locking assembly; Figure 9 Schematic diagram of the universal clamping device in Example 2; Figure 10 is a schematic diagram of the positioning mechanism; In the figure: 1, guardrail; 11, window; 111, protective net; 2, movable support; 21, column; 22, base; 23, universal castor; 24, side support column; 241, outer column; 242, inner column; 25, pull ear; 3, universal clamping device; 31, upper link mechanism; 311, upper end cap; 312, clamping column; 32, lower link mechanism; 321, lower honeycomb seat; 322, piston; 3221, end; 323, compression spring; 33, release mechanism; 33 1. Pressure plate; 332. Pulling member; 333. Locking assembly; 3331. Housing; 3332. Cylindrical lock core; 3333. Return spring; 3334. Top plate; 3335. Sleeve; 3336. Unlocking lever; 34. Upper turntable; 341. Lock hole; 35. Lower turntable; 351. Bolt hole; 351. Expansion boss; 36. Lock bolt; 37. Bearing; 38. Positioning mechanism; 381. Elastic member; 382. Top cap; 383. Positioning ball; 4. Positioning groove. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can 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.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0019] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect 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.

[0020] according to Figure 1-10 As shown, a guardrail includes a guardrail 1 and a movable pillar 2. The number of the guardrails 1 and the movable pillars 2 is determined according to the size of the construction site. The guardrails 1 and the movable pillars 2 are staggered and movably connected to each other. A universal clamping device 3 is provided between the guardrails 1 and the movable pillars 2 for adjusting the angle between the two.

[0021] There are two implementation modes of the universal clamping device 3: Example 1 according to Figure 4-8 As shown, the universal coupling device 3 includes an upper link mechanism 31 and a lower link mechanism 32. The upper link mechanism 31 is connected to the guardrail 1, and the lower link mechanism 32 is connected to the movable support 2. When the guardrail 1 rotates about the movable support 2, the upper link mechanism 31 and the lower link mechanism 32 can rotate relative to each other. When the guardrail 1 and the movable support 2 are fixed at a specific angle, the upper link mechanism 31 and the lower link mechanism 32 are engaged. The upper link mechanism 31 and the lower link mechanism 32 are detachable. After the guardrail 1 and the movable support 2 are transported to the construction site, they can be assembled. This not only facilitates transportation but also assembly. The upper link mechanism 31 only needs to be spliced ​​onto the lower link mechanism 32.

[0022] according to Figure 4-8 As shown, the lower link mechanism 32 includes a lower honeycomb seat 321, a plurality of pistons 322, and a plurality of compression springs 323. A cavity is provided inside the lower honeycomb seat 321. A honeycomb hole communicating with the cavity is provided on the upper end surface of the lower honeycomb seat 321, and a piston 322 is inserted into each hole. A plurality of compression springs 323 are provided in a one-to-one correspondence with the plurality of pistons 322. One end of the compression spring 323 abuts against the piston 322, and the other end abuts against the bottom wall of the cavity. The top end of the plug 322 extends outside the hole, and the bottom end of the piston 322 extends into the cavity, and an end head 3221 with an outer diameter larger than the hole is provided at this end. The upper link mechanism 31 includes an upper end cap 311 and a clamping column 312. The lower end surface of the upper end cap 311 is provided with a circular groove for being sleeved on the lower honeycomb seat 321. The top end of the clamping column 312 is embedded in the circular groove, and the bottom end of the clamping column 312 is used to resist one or more pistons 322 when the upper end cap 311 is pressed down.

[0023] according to Figure 4-8As shown, the lower honeycomb seat 321 is set to be cylindrical and consists of two parts, namely, an upper regulating part and a lower supporting part. The container is opened at the bottom end of the upper regulating part and is sealed by the lower supporting part. The upper regulating part and the lower supporting part are fixedly connected by bolts, which is convenient for installing the piston 322, the pressure plate 331 and the compression spring 323 in the container. The lower supporting part is welded on the pull ear 25. The top of the piston 322 protrudes 1-2CM from the upper regulating part and is made of stainless steel. The top of the upper regulating part is also quenched to increase its hardness, or an annular insert is installed on the top of the hole. A coaxial countersunk groove is first opened at the top of the hole, and the annular insert is interference fit in the countersunk groove, which can also meet the requirement of increasing the hardness of the upper regulating part. In addition, the clamping column 312 can be formed with the upper end cap 311 through a milling cutter side, or the clamping column 31 The top of 2 is interference fit with the inner top wall of the upper end cap 311, the inner diameter of the circular groove of the upper end cap 311 is consistent with the outer diameter of the upper adjusting part, and the depth of the circular groove is 5-10CM. Because the upper end cap 311 is fixedly connected to the guardrail 1, the assembled guardrail 1 is in a suspended state on the movable pillar 2. Under the action of the gravity of the upper end cap 311 and the guardrail 1, the lower end of the clamping column 312 will squeeze the top of the piston 322, moving the piston 322 downward and shrinking it in the hole, while the piston 322 that is not squeezed is still in the initial protruding state, and the front, back, left and right movement of the clamping column 312 is limited by these pistons 322 that are not squeezed. The number of clamping columns 312 can be set to one or two. It should be noted here that the more pistons 322 are set, the more precise the adjustable angle is.

[0024] according to Figure 8As shown, the universal clamping device 3 also includes a tripping mechanism 33, which includes a pressure plate 331 and a traction member 332. The pressure plate 331 is provided with a plurality of through holes, and the plurality of through holes are arranged in a one-to-one correspondence with the holes of the honeycomb holes. The end 3221 of the piston 322 is located at the bottom of the pressure plate 331 and is against the lower end surface of the pressure plate 331. The traction member 332 is connected to the pressure plate 331 and is used to drive the pressure plate 331 to move downward. The traction member 332 is set to be a soft rod shape, and the tripping mechanism 33 also includes a locking assembly 333, which includes a shell 3331, a pair of cylindrical lock cores 3332, a return spring 3333 and a top plate 3334. A cavity with a conical cross section is provided in the shell 3331, and the end with a smaller inner diameter of the cavity is the feed locking end. A through hole communicating with the cavity is opened at the top of the shell 3331, and a pair of cylindrical lock cores are placed in the cavity and distributed on both sides of the through hole. The top plate 3334 and the return spring 3333 are both provided on the pair of cylindrical lock cores. At the bottom of the core 3332, the top end of the return spring 3333 abuts against the top plate 3334, and the other end abuts against the bottom wall of the cavity. The bottom wall of the cavity is the upper end face of the buckle plate, and the buckle plate is fixed to the shell 3331 by bolts. A sliding sleeve 3335 is provided on the outer side of the shell 3331, and an unlocking rod 3336 is provided on the inner wall of the sliding sleeve 3335. The other end of the unlocking rod 3336 extends to the top of the cylindrical lock core 3332. A sliding groove communicating with the cavity is provided on the outer wall of the shell 3331, which is used for the unlocking rod 3336 to slide up and down therein.

[0025] according to Figure 8As shown, because the fence 1 is relatively heavy, it is time-consuming to move the fence 1 upward when adjusting the angle of the fence 1. Therefore, a tripping mechanism 33 is provided to release the restriction of the clamping column 312 so that the clamping column 312 can move, so that the fence 1 can be adjusted to a required angle, and the traction member 332 is pulled to move the pressure plate 331 upward. The pressure plate 331 is sleeved on all pistons 322 so that all pistons 322 are contracted and fit into the hole. The clamping column 312 is no longer restricted by the piston 322 and can move freely. After the fence 1 is adjusted to a suitable angle, the traction member 332 is released, and the pressure plate 331 is restored to its initial state under the action of all compression springs 323, and the piston 322 not under the clamping column 312 can protrude. The traction member 332 is pulled out of the upper adjustment part, and because one hand holding the traction member 332 will affect the operator's pushing of the railing 1, it is necessary to constrain the traction member 332 after being pulled down to prevent the traction member 332 from moving up and down to return to the initial position after the hand is released. A locking assembly 333 is installed on the traction member 332. In addition to the above-mentioned embodiment, the locking assembly 333 can also be equipped with an equal-length top block by calculating the length that the traction member 332 can be lowered. A support block is fixed at the position where the traction member 332 is located below the pull ear 25. After the traction member 332 is lowered to the limit position, a top block with a C-shaped cross section is installed on the traction member 332, and the top end of the top block abuts against the lower end face of the pull ear 25, and the bottom end of the top block abuts against the support block. The locking assembly 333 is composed of a shell 3331, a pair of cylindrical lock cores 3332, a return spring 3333 and a top plate 3334. The traction member 332 passes through the shell 3331 and passes through the cavity. The pair of cylindrical lock cores 3332 are distributed on both sides of the traction member 332. The cavity is narrow at the top and wide at the bottom, so that the shell 3331 can move upward freely. When the shell 3331 wants to move downward relative to the traction member 332, friction is generated between the traction member 332 and the pair of cylindrical lock cores 3332, and the pair of cylindrical lock cores 3332 move upward and At the same time, the distance is reduced, thereby clamping the traction member 332, so that the shell 3331 cannot continue to move downward relative to the traction member 332. When in use, after the traction member 332 has come down to the limit, the shell 3331 is moved upward, and the top end of the shell 3331 is abutted against the lower end surface of the pull ear 25. The sliding sleeve 3335 moves downward relative to the shell 3331, and the unlocking rod 3336 moves a pair of cylindrical lock pins downward, releasing the clamping of the pair of cylindrical lock cores 3332 on the traction member 332. At this time, the shell 3331 can move freely up and down on the traction member 332.

[0026] Example 2 according to Figure 9As shown, the universal clamping device 3 includes an upper turntable 34, a lower turntable 35, a locking bolt 36 and a bearing 37. An expansion boss 351 is coaxially provided on the top of the lower turntable 35, and the bearing 37 is coaxially fixed on the expansion boss 351. The upper turntable 34 is configured as a ring, and its inner ring is sleeved on the bearing 37; a plurality of locking holes 341 are opened on the upper turntable 34, and the plurality of locking holes 341 are evenly spaced circumferentially distributed on the upper turntable 34; a bolt hole 351 is opened on the lower turntable 35. When the upper turntable 34 and the lower turntable 35 rotate relative to each other, the bolt hole 351 is coaxial with one of the locking holes 341, and the locking bolt 36 passes through the coaxial locking hole 341 and the bolt hole 351.

[0027] according to Figure 9 The locking bolt 36 is finally inserted into the locking hole 341 and the bolt hole 351 at the same time to fix the upper turntable 34 and the lower turntable 35 to prevent the angle of the upper turntable 34 and the lower turntable 35 from moving when the railing 1 is impacted by external force.

[0028] according to Figure 9-10 As shown, the universal clamping device 3 also includes a positioning mechanism 38, the positioning mechanism 38, the axis of the upper turntable 34, and the axis of one of the locking holes 341 are located on the same straight line. The upper turntable 34 is provided with a positioning hole for the positioning mechanism 38 to be installed therein. The positioning mechanism 38 includes an elastic member 381, a top cap 382 and a positioning ball 383. The top cap 382 is threadedly connected to the top opening of the positioning hole. Part of the positioning ball 383 protrudes from the bottom of the positioning hole to its outside. The elastic member 381 is installed between the top cap 382 and the positioning ball 383 and is in an elastic deformation state. The upper end surface of the lower turntable 35 is provided with a positioning groove 4 for cooperating with the positioning ball 383. The same number of positioning grooves 4 as the locking holes 341 are equidistantly spaced circumferentially on the lower turntable 35 and are all on the rotation path of the positioning mechanism 38. When one of the locking holes 341 is coaxial with the bolt hole 351, the positioning ball 383 is locked into one of the positioning grooves 4.

[0029] according to Figure 9-10As shown, because the universal clamping device 3 is installed between the fence 1 and the movable support 2 and at a certain height from the ground, it is inconvenient for the operator to directly observe whether the lock hole 341 and the bolt hole 351 are aligned. Therefore, the positioning mechanism 38 is provided to indicate whether the lock hole 341 and the bolt hole 351 are aligned. When one-third of the positioning ball 383 is inserted into the positioning groove 4, a jamming feeling and a knocking sound will be heard. At this time, it means that there is a locking block coaxial with the bolt hole 351. In order to facilitate the calculation of the number of knocking sounds, the positioning holes are initially positioned on the extension line of the length of the fence 1. If there are eight lock holes 341, a knocking sound will be heard when the fence 1 rotates 45 degrees. In order to reduce the friction between the positioning ball 383 and the lower turntable 35, a grid-like groove is opened on the spherical surface of the positioning ball 383. Some of the grid-like grooves are filled with lead, and the grid-like grooves in the remaining parts serve to dissipate heat, thereby preventing the positioning ball 383 from expanding due to frictional heat.

[0030] according to Figure 3 As shown, the mobile pillar 2 includes a column 21, a base 22, and a universal caster 23 with a brake function. The base 22 is fixed to the lower end of the column 21, and the universal caster 23 is fixed below the base 22. The column 21 has at least one pair of pull ears 25, which are symmetrically arranged about the central axis of the column 21. The universal clamping device 3 is mounted on the pull ears 25. The mobile pillar 2 is also provided with a side support column 24, which includes an outer column 241 and an inner column 242. The top end of the outer column 241 is hinged to the axis pin of the column 21, and the inner column 242 is slidably connected to the outer column 241. The outer column 241 is provided with a guide groove, which extends along the length of the outer column 241. The guide groove is provided with a locking bolt threadedly connected to the inner column 242. A blind hole is provided on the outer circumference of the column 21. When the inner column 242 shrinks into the outer column 241 and the outer column 241 fits on the column 21, a fastening bolt is inserted into the bottom end of the guide groove. The fastening bolt is threadedly connected to the blind hole to prevent the side support column 24 from shaking on the column 21.

[0031] according to Figure 3As shown, there are two pairs of pull ears 25, one pair of pull ears 25 is arranged near the top end of the column 21, and the other pair of pull ears 25 is arranged near the bottom end of the column 21. There are three ways to connect the guardrail 1 and the movable pillar 2. The first way is that the universal clamping device 3 in Example 1 is installed on the upper pull ear 25, and the lower pull ear 25 is provided with a plug rod and a sleeve, the plug rod is inserted into the sleeve, and the bottom of the plug rod is welded to the pull ear 25, and the outer circumferential surface of the sleeve is welded to the side wall of the guardrail 1; the second way is that the universal clamping device 3 in Example 2 is installed in the lower pull ear 25, and the upper pull ear 25 is provided with a plug rod and a sleeve; the third way is that the universal clamping device 3 in Example 1 is installed on the upper pull ear 25, and the universal clamping device 3 in Example 2 is installed on the lower pull ear 25, and the guardrail 1 and the movable pillar 2 are connected together through the universal clamping devices 3 in Example 1 and Example 2.

[0032] according to Figure 1-3 As shown, six windows 11 are arranged in a matrix on the guardrail 1, and a protective net 111 is provided in the window 11 at the bottom. The windows 11 are provided to reduce the weight of the guardrail 1 on the one hand, and to reduce wind resistance on the other hand. The three windows 11 at the top have smaller diameters, and the protective net 111 is installed in the three windows 11 at the bottom, which have larger diameters, to prevent animals or people from passing through the windows 11 at the bottom. However, when dustproof or confidentiality construction is required, cover plates can be installed in all windows 11 for sealing, and the cover plates are connected to the guardrail 1 by sampling clips or bolts.

[0033] The guardrail 1 and the movable pillar 2 are connected as a whole through a universal clamping device 3. The universal clamping device 3 consists of two parts, which are convenient to assemble and disassemble, and also convenient for transportation. After the guardrail 1 is connected to the movable pillar 2, the position of the guardrail can be moved by the movable pillar 2, or the movable pillar 2 can be pushed and the rotation angle of the universal clamping device 3 can be changed to adjust the overall shape of the guardrail, which has strong applicability.

[0034] according to Figure 1-10 As shown, multiple guardrails 1 and movable pillars 2 can be connected to form a straight line, triangle, semicircle or rectangle. When enclosed into a closed construction environment, the side support columns 24 do not need to be opened. When enclosed into a semi-enclosed construction environment, the side support columns 24 on the movable pillars 2 are staggered, that is, the side support columns 24 on two adjacent movable pillars 2, one of which is expanded to the inside of the enclosed area, and the other is expanded to the outside of the enclosed area. A circular hole is opened at the bottom end of the inner column 242, which can be used to connect weights to increase the stability of the movable pillar 2. This situation is generally used in a windy environment.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0036] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0037] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A guardrail, characterized by: It comprises a baffle (1) and a movable support (2), and a plurality of baffles (1) and movable support (2) are provided, wherein the plurality of baffles (1) and movable support (2) are staggered and distributed, and the baffles (1) and movable support (2) are movably connected; A universal clamping device (3) for adjusting the angle between the guardrail (1) and the movable support (2) is provided between the guardrail (1) and the movable support (2).

2. The guardrail according to claim 1, wherein: The universal clamping device (3) comprises An upper link mechanism (31) connected to the guardrail (1) or the movable support (2); A lower link mechanism (32) connected to the movable support (2) or the guardrail (1); When the fence (1) rotates with the movable pillar (2) as the center, the upper link mechanism (31) and the lower link mechanism (32) can rotate relative to each other; when the fence (1) and the movable pillar (2) are fixed at a specific angle, the upper link mechanism (31) and the lower link mechanism (32) are engaged.

3. The guardrail according to claim 2, wherein: The lower link mechanism (32) includes a lower honeycomb seat (321), a plurality of pistons (322), and a plurality of compression springs (323). A cavity is provided inside the lower honeycomb seat (321). A honeycomb hole communicating with the cavity is provided on the upper end surface of the lower honeycomb seat (321), and a piston (322) is inserted into each hole. The plurality of compression springs (323) are arranged in a one-to-one correspondence with the plurality of pistons (322). One end of the compression spring (323) abuts against the piston (322), and the other end abuts against the bottom wall of the cavity. The top end of the piston (322) extends outside the hole, the bottom end of the piston (322) extends into the cavity, and an end head (3221) having an outer diameter larger than that of the hole is provided at the end. The upper link mechanism (31) comprises an upper end cap (311) and a clamping column (312). The lower end surface of the upper end cap (311) is provided with a circular groove for being sleeved on the lower honeycomb seat (321). The top end of the clamping column (312) is embedded in the circular groove, and the bottom end of the clamping column (312) is used to abut against one or more pistons (322) when the upper end cap (311) is pressed down.

4. The guardrail according to claim 3, characterized in that: The universal clamping device (3) further includes a tripping mechanism (33), the tripping mechanism (33) including a pressing plate (331) and a traction member (332), the pressing plate (331) being provided with a plurality of through holes, the plurality of through holes being arranged in a one-to-one correspondence with the holes of the honeycomb pores, the end (3221) of the piston (322) being located at the bottom of the pressing plate (331) and abutting against the lower end surface of the pressing plate (331), the traction member (332) being connected to the pressing plate (331) and being used to drive the pressing plate (331) to move downward.

5. The guardrail according to claim 4, characterized in that: The traction member (332) is configured as a soft rod. The tripping mechanism (33) further includes a locking assembly (333), which includes a housing (3331), a pair of cylindrical lock cores (3332), a return spring (3333) and a top plate (3334). A cavity with a conical cross section is provided in the housing (3331). The end of the cavity with a smaller inner diameter is a feed locking end. A through hole communicating with the cavity is provided at the top of the housing (3331). A pair of cylindrical lock cores are disposed in the cavity and are distributed on both sides of the through hole. The top plate (3334) and the return spring (3333) are provided with a plurality of springs. The reset springs (3333) are all arranged at the bottom of a pair of cylindrical lock cores (3332), the top end of the reset spring (3333) abuts against the top plate (3334), and the other end abuts against the bottom wall of the cavity. A sliding sleeve (3335) is provided on the outside of the shell (3331), and an unlocking rod (3336) is provided on the inner wall of the sliding sleeve (3335). The other end of the unlocking rod (3336) extends to the top of the cylindrical lock core (3332), and a sliding groove communicating with the cavity is provided on the outer wall of the shell (3331) for the unlocking rod (3336) to slide up and down therein.

6. The guardrail according to claim 1, characterized in that: The universal clamping device (3) comprises an upper turntable (34), a lower turntable (35), a locking bolt (36) and a bearing (37); an expansion boss (351) is coaxially provided on the top of the lower turntable (35); the bearing (37) is coaxially fixed on the expansion boss (351); the upper turntable (34) is arranged in an annular shape, and its inner ring is sleeved on the bearing (37); The upper turntable (34) is provided with a plurality of lock holes (341), which are uniformly spaced around the upper turntable (34). The lower turntable (35) is provided with a bolt hole (351). When the upper turntable (34) and the lower turntable (35) rotate relative to each other, the bolt hole (351) is coaxial with one of the lock holes (341), and the lock bolt (36) passes through the coaxial lock hole (341) and the bolt hole (351).

7. The guardrail according to claim 6, characterized in that: The universal clamping device (3) further includes a positioning mechanism (38), wherein the positioning mechanism (38), the axis of the upper turntable (34), and the axis of one of the lock holes (341) are located on the same straight line, and a positioning hole for the positioning mechanism (38) to be installed therein is provided on the upper turntable (34), and the positioning mechanism (38) includes an elastic member (381), a top cap (382), and a positioning ball (383), wherein the top cap (382) is threadedly connected to the top opening of the positioning hole, and a portion of the positioning ball (383) protrudes from the bottom of the positioning hole to the outside thereof. The elastic member (381) is installed between the top cap (382) and the positioning ball (383) and is in an elastic deformation state. The upper end surface of the lower turntable (35) is provided with a positioning groove (4) for cooperating with the positioning ball (383). The positioning grooves (4) having the same number as the locking holes (341) are equidistantly spaced in the circumferential direction on the lower turntable (35) and are all on the rotation path of the positioning mechanism (38). When one of the locking holes (341) is coaxial with the bolt hole (351), the positioning ball (383) is inserted into one of the positioning grooves (4).

8. The guardrail according to any one of claims 1 to 7, characterized in that: The movable pillar (2) includes a column (21), a base (22) and a universal caster (23) with a brake function, wherein the base (22) is fixed to the lower end of the column (21), and the universal caster (23) is fixed below the base (22). The column (21) has at least one pair of pull ears (25), and the pair of pull ears (25) are symmetrically arranged about the central axis of the column (21). The universal clamping device (3) is installed on the pull ears (25).

9. The guardrail according to claim 8, characterized in that: The movable pillar (2) is also provided with a side support column (24), and the side support column (24) includes an outer column (241) and an inner column (242). The top end of the outer column (241) is hinged to the axis pin of the column rod (21), and the inner column (242) is slidably connected to the outer column (241). A guide groove is provided on the outer column (241), and the guide groove extends along the length direction of the outer column (241). A locking bolt threadedly connected to the inner column (242) is provided in the guide groove.

10. The guardrail according to claim 9, characterized in that: A plurality of windows (11) are provided on the guardrail (1), and a protective net (111) is provided in the window (11) at the bottom.

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