A safety fence convenient to move and a moving method thereof

Abstract

The application provides a safe fence convenient to move, which comprises a fence support rod and a fence baffle connecting two adjacent fence support rods, the fence support rod comprises a vertical rod, the vertical rod is axially sleeved with a vertical rod support assembly for horizontally connecting the fence baffle, the bottom of the vertical rod is provided with a wheel device, the wheel device comprises a lifting wheel assembly and an arc plate-shaped mounting cover for mounting the wheel assembly, the wheel assembly comprises a pedal for driving a universal wheel at the bottom end of the wheel assembly to move upward and a locking assembly horizontally slidable into a key groove at the top of the universal wheel and capable of limiting the lifting of the universal wheel, the universal wheel is connected to the bottom of the vertical rod through an elastic support structure, the locking assembly is arranged in the bottom of the vertical rod in a pluggable manner along the radial direction of the vertical rod, and the locking assembly is horizontally supported through a locking spring. The application has the effects of improving the impact resistance, movability, installation stability, installation efficiency and universality of the safe fence.

Description

Technical Field

[0001] This invention relates to the field of safety fence technology, and in particular to a movable safety fence and a method for moving it. Background Technology

[0002] When power plants, substations, and other engineering projects are carrying out maintenance work such as trench excavation, gate opening and closing, and power testing, it is necessary to use fences to isolate slopes, gate openings, machine pits, or work areas to ensure the safety of construction personnel and pedestrians and prevent falls and electric shock accidents. The safety, reliability, convenience, and speed of fence installation directly affect whether the maintenance work on power equipment and facilities can be carried out safely and efficiently.

[0003] Currently, there are three main types of fencing used at power production and maintenance sites: First, there are mesh-type fencing, which has poor barrier properties and low strength, and cannot effectively resist the impact of external people or objects, resulting in poor safety; second, there are fencing that are welded or fixed to the ground with anchor bolts, which cannot be adjusted in position, are inconvenient to install and dismantle, and have low work efficiency; and third, there are simple fencing with casters, which are easy to move and transport, but because the casters have poor locking performance, they are prone to movement when impacted by external objects, resulting in poor protective performance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a movable safety fence and its moving method, which solves the problems of inconvenient fence installation and disassembly, poor impact resistance, and poor safety in existing technologies.

[0005] According to an embodiment of the present invention, a movable safety fence includes fence support rods and fence baffles connecting two adjacent fence support rods. The fence support rods include uprights, and upright support assemblies for horizontally connecting fence baffles are fitted onto the uprights along the axial direction. A wheel device is provided at the bottom of the uprights. The wheel device includes a lifting wheel assembly and an arc-shaped mounting cover for mounting the wheel assembly. The wheel assembly includes a pedal that drives the universal wheel at the bottom of the wheel assembly to move upward by stepping on it, and a locking assembly that can slide horizontally into the keyway at the top of the universal wheel and limit the lifting and lowering of the universal wheel. The universal wheel is connected to the bottom of the uprights through an elastic support structure. The locking assembly is detachably arranged in the bottom of the uprights along the radial direction and is horizontally supported by a locking spring.

[0006] Preferably, the bottom of the upright is provided with a baffle for supporting the upright support assembly. The upright support assembly includes a bracket, an adjusting sleeve, and an end cap. The bracket and the adjusting sleeve are both fitted onto the upright. The bracket has inclined platforms on opposite sides, and a locking pin for inserting into the end opening of the fence baffle is fixedly connected to the top of the inclined platform. The adjusting sleeve is tubular, and both end walls of the adjusting sleeve can fit against the top or bottom wall of the bracket. The top of the upright is provided with an internal thread, and the bottom of the end cap is provided with a columnar protrusion, and the bottom of the columnar protrusion is provided with a connecting thread that can connect with the internal thread.

[0007] Preferably, the top of the locking pin is provided with a pin hole for fixing the fence panel.

[0008] Preferably, the outer wall of the end cap is knurled.

[0009] Preferably, the bottom of the upright has an installation groove, the installation cover is installed in the installation groove, the inner bottom of the upright has a spacer ring, the spacer ring is located below the installation groove, one end of the pedal is horizontally rotatably connected to the inner side of the installation cover, the outer wall of the installation cover has a vertical guide groove, the middle part of the pedal is slidably arranged in the guide groove, the pedal is located inside the installation cover and connected to it through a transmission structure, the top of the universal wheel is connected to the rotating end of the pedal through a transmission structure, the transmission structure is wound up on the rotating end of the pedal, the elastic support structure is a telescopic spring between the universal wheel and the spacer ring, the top of the telescopic spring contacts the bottom surface of the spacer ring, and the outer diameter of the top of the universal wheel is smaller than the inner diameter of the spacer ring.

[0010] Preferably, the telescopic spring is fitted onto the top of the caster wheel, and the pedal is provided with a pin at one end inside the mounting cover and is rotatably connected to the mounting cover via the pin. A sprocket is fixedly connected to the pin. The transmission structure includes a hinge, one end of which is fixedly connected to the sprocket, and the other end is fixedly connected to the top of the caster wheel. A torsion spring is fitted onto the pin, one end of which is connected to the sprocket, and the other end is connected to the inner wall of the mounting cover.

[0011] Preferably, the locking assembly includes a pin sleeve axially fixed to the bottom end of the upright and a locking pin coaxially slidably installed in the pin sleeve. An annular partition is provided on the outer wall of the locking pin, and a locking spring is fitted on the locking pin. The locking spring is located between the pin sleeve and the partition. One end of the locking pin is connected to a pull ring. The pull ring and the locking spring are located on both sides of the locking pin. The pull ring is located on the outside of the upright. When one end of the locking pin contacts the top of the universal wheel, the locking spring is in a compressed state. A keyway is vertically provided on the top of the universal wheel, and the locking pin is located directly above the keyway.

[0012] Preferably, a frustum-shaped support base is coaxially fixed at the bottom end of the support pole, and a circular groove for accommodating the caster wheel is provided at the bottom of the support pole base.

[0013] Preferably, the fence panel includes a rectangular panel and mounting holes at both ends of the panel, with the mounting holes located at the four corners of the panel.

[0014] A method for moving a safety fence that is easy to move includes the following steps: Step 1: Frame construction. According to the area to be fenced, place fence support rods at equal intervals along the perimeter of the area to be fenced. By stepping on the pedal, the pedal drives the pin to rotate, which in turn drives the sprocket to rotate and retracts the hinge. The bottom end of the hinge lifts the caster. During the upward movement of the caster, the locking spring pushes the locking pin into the keyway through the partition, and the caster enters the groove of the upright base to achieve high-position locking of the caster. The distance between adjacent fence support rods is equal to the length of the fence panel. According to the required fence height, select the number of brackets and adjusting sleeves to be fitted on the uprights, and fix the brackets and adjusting sleeves with end caps; Step 2: Fence construction. By rotating the brackets, the locking pins between adjacent brackets are aligned. The fence panel is installed between adjacent fence support rods by engaging the mounting holes at the end of the fence panel with the locking pins on the brackets. Warning statements and signs are affixed to the panel of the fence panel. Step 3: Disassembly and relocation. Remove the fence panel from the fence support rod. Pull the locking pin outward using the pull ring so that the end of the locking pin is pulled out of the keyway. The elastic return of the compressed telescopic spring will push the caster out of the upright base and push the fence support rod to move.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By using adjustable casters with pedals and a base for the uprights, the casters serve as the support structure for the fence support poles when they need to be moved, making it easy for workers to move the fence support poles and thus facilitating the movement of the safety fence. Furthermore, by retracting the casters with the pedals, the base for the uprights serves as the support structure for the fence support poles. The base for the uprights is disc-shaped, which has good stability and improves the impact resistance of the safety fence, thereby enhancing its overall stability.

[0017] 2. Safety fences are assembled from fence support rods and fence panels. The safety fence has a simple structure, is easy to disassemble, and has low manufacturing cost.

[0018] 3. The number and distribution of the safety fence support poles can be adjusted according to the area that needs to be fenced off, so as to meet the requirements of various areas that need to be fenced off, making it highly versatile.

[0019] 4. The height and quantity of the fence panels can be selected to meet different fence height requirements, thus saving on the number of fence panels required. Attached Figure Description

[0020] Figure 1 This is a partial cross-sectional structural diagram of the fence support rod in an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the upright in an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the support structure in an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the adjusting sleeve in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the end cap structure in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the internal structure of the end cap in an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the mounting cover in an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the wheel assembly in an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the locking component in an embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the structure of the fence panel in an embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the structure of an embodiment of the present invention.

[0031] In the above attached figures: 1. Fence support post; 1-1. Upright post; 1-1-1. Upright post base; 1-1-2. Spacer ring; 1-1-3. Mounting groove; 1-1-4. Baffle; 1-1-5. Internal thread; 1-2. Upright post support assembly; 1-2-1. Bracket; 1-2-1-1. Bracket end face; 1-2-1-2. Inner surface; 1-2-1-3. Locking pin; 1-2-1-4. Pin hole; 1-2-2. Adjusting sleeve; 1-2-3. End cap; 1-2-3-1. Knurling; 1-2-3-3. Connecting thread; 1-3. Wheel assembly; 1-3-1. Mounting cover; 1-3- 1-1, Guide groove; 1-3-1-2, Connecting countersunk hole; 1-3-1-3, Mounting countersunk hole; 1-3-2, Wheel assembly; 1-3-2-1, Caster wheel; 1-3-2-2, Telescopic spring; 1-3-2-3, Keyway; 1-3-2-4, Hinge; 1-3-2-5, Pedal; 1-3-2-6, Pin; 1-3-2-7, Torsion spring; 1-4, Locking assembly; 1-4-1, Locking pin; 1-4-2, Partition; 1-4-3, Locking spring; 1-4-4, Pin sleeve; 1-4-5, Pull ring; 2, Fence baffle; 2-1, Hanging hole; 2-2, Panel. Detailed Implementation

[0032] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1-11 As shown, to achieve the effect of easy assembly, disassembly, and relocation of a high-strength, impact-resistant safety fence, this invention proposes a movable safety fence, including fence support rods 1 and fence baffles 2 connecting two adjacent fence support rods 1. Each fence support rod 1 includes a vertical post 1-1, with a vertical post support assembly 1-2 for horizontally connecting the fence baffles 2 mounted axially on the vertical post 1-1. A wheel device 1-3 is provided at the bottom of the vertical post 1-1, comprising a lifting wheel assembly 1-3-2 and an arc-shaped mounting cover 1-3-1 for mounting the wheel assembly 1-3-2. The wheel assembly 1-3-2 includes a step belt... The universal wheel 1-3-2-1 at the bottom of the drive wheel assembly 1-3-2 has an upward-moving pedal 1-3-2-5 and a locking assembly 1-4 that can slide horizontally into the keyway 1-3-2-3 at the top of the universal wheel 1-3-2-1 and limit the lifting and lowering of the universal wheel 1-3-2-1. The universal wheel 1-3-2-1 is connected to the bottom of the upright 1-1 through an elastic support structure. The locking assembly 1-4 is arranged in the radial direction of the upright 1-1 at the bottom of the upright 1-1 and is horizontally supported by a locking spring 1-4-3.

[0034] When fixing the fence support rod 1, stepping on the pedal 1-3-2-5 causes it to rotate downwards, which in turn moves the caster wheel 1-3-2-1 upwards, compressing the elastic support structure. The caster wheel 1-3-2-1 then enters the upright 1-1, and the bottom surface of the upright 1-1 directly contacts the bottom surface, achieving vertical fixing of the upright 1-1. This eliminates the need for anchor bolts at the bottom of the upright 1-1, improving the installation efficiency of the fence support rod 1. The fence baffle 2 is installed using the upright support assembly 1-2 fitted onto the upright 1-1. The upright support assembly 1-2 can rotate on the round upright 1-1; therefore, only the distance between adjacent uprights 1-1 needs to be adjusted to create enclosures for areas of different shapes using the fence support rod 1 and the fence baffle 2. When the fence support rod 1 is moved, the caster wheel 1-3-2-1 is used as the support structure. The caster wheel 1-3-2-1 is connected to the upright rod 1-1 through the elastic support structure to realize the movement of the fence support rod 1.

[0035] like Figure 1-6 As shown, this is to enable the installation of the rotatable pole support assembly 1-2. The bottom of the upright 1-1 is provided with a baffle 1-1-4 for supporting the upright support assembly 1-2. The upright support assembly 1-2 includes a bracket 1-2-1, an adjusting sleeve 1-2-2, and an end cap 1-2-3. The bracket 1-2-1 and the adjusting sleeve 1-2-2 are both fitted onto the upright 1-1. The bracket 1-2-1 has inclined platforms on opposite sides, and a locking pin 1-2-1-3 for inserting into the end opening of the fence baffle 2 is fixedly connected to the top of the inclined platform. The adjusting sleeve 1-2-2 is tubular, and both end walls of the adjusting sleeve 1-2-2 can fit against the top or bottom wall of the bracket 1-2-1. The top of the upright 1-1 is provided with an internal thread 1-1-5, and the bottom of the end cap 1-2-3 is provided with a columnar protrusion, and the bottom of the columnar protrusion is provided with a connecting thread 1-2-3-3 that can be connected to the internal thread 1-1-5. The bracket 1-2-1 is generally cylindrical, with its two end faces forming the bracket end faces 1-2-1-1 and its inner wall forming the inner surface 1-2-1-2. The inner surface 1-2-1-2 fits against the outer wall of the upright 1-1, allowing the bracket 1-2-1 to rotate around the upright 1-1. Based on the required height of the safety fence, the bracket 1-2-1 is raised using the adjusting sleeve 1-2-2 to determine the installation height of the fence panel 2. After the fence support rod 1 is fixed, the fence panel 2 is installed. After the bracket 1-2-1 and adjusting sleeve 1-2-2 are installed, the end cap 1-2-3 is connected to the top of the upright 1-1 via a columnar protrusion, thus limiting the position of the bracket 1-2-1 and adjusting sleeve 1-2-2.

[0036] like Figure 3As shown, to improve the stability of the fence panel 2 installation, the top end of the locking pin 1-2-1-3 is provided with a pin hole 1-2-1-4 for fixing the fence panel 2.

[0037] like Figure 5 and Figure 6 As shown, to facilitate manual rotation of the end cap 1-2-3, the outer wall of the end cap 1-2-3 is provided with knurling 1-2-3-1.

[0038] like Figure 1 , Figure 2 and Figure 7 As shown, to achieve the installation of pedal 1-3-2-5 and enable the universal wheel 1-3-2-1 to move upward by stepping on pedal 1-3-2-5, the bottom of the upright 1-1 has a mounting groove 1-1-3. The mounting cover 1-3-1 is installed in the mounting groove 1-1-3. A spacer ring 1-1-2 is provided at the inner bottom of the upright 1-1, located below the mounting groove 1-1-3. One end of the pedal 1-3-2-5 is horizontally rotatably connected to the inner side of the mounting cover 1-3-1. The outer wall of the mounting cover 1-3-1 has a vertical guide groove 1-3-1-1. The middle part of the pedal 1-3-2-5 is slidably arranged in the guide groove 1-3-1-1. The mounting cover 1-3-1 is connected to the inner side of the pedal 1-3-2-5 via a transmission structure. The top end of the universal wheel 1-3-2-1 is connected to the rotating end of the pedal 1-3-2-5 via the transmission structure. The transmission structure is wound up on the rotating end of the pedal 1-3-2-5. The elastic support structure is the telescopic spring 1-3-2-2 between the universal wheel 1-3-2-1 and the spacer 1-1-2. The top end of the telescopic spring 1-3-2-2 contacts the bottom surface of the spacer 1-1-2. The outer diameter of the top end of the universal wheel 1-3-2-1 is smaller than the inner diameter of the spacer 1-1-2. The mounting shaft of pedal 1-3-2-1 is horizontally rotated and installed through the mounting countersunk hole 1-3-1-3 on the mounting cover 1-3-1. When pedal 1-3-2-1 is stepped on, the movable end of pedal 1-3-2-1 rotates downward around its rotating end. At the same time, the rotating end of pedal 1-3-2-5 rotates downward, which winds up the transmission structure and drives the caster 1-3-2-1 to move upward, compressing the telescopic spring 1-3-2-2. During the upward movement of caster 1-3-2-1, the locking component 1-4 is inserted into the keyway 1-3-2-3 by the pushing of the locking spring 1-4-3, preventing caster 1-3-2-1 from moving downward, thus limiting the movement of caster 1-3-2-1. The side wall of the mounting cover 1-3-1 is provided with a connecting countersunk hole 1-3-1-2. The mounting cover 1-3-1 is installed at the bottom of the upright 1-1 through six connecting countersunk holes 1-3-1-2. The guide groove 1-3-1-1 on the mounting cover 1-3-1 is used to guide the pedal 1-3-2-1.

[0039] like Figure 7 and Figure 8 As shown, to achieve the rotation of pedal 1-3-2-5, the universal wheel 1-3-2-1 is moved upward. The telescopic spring 1-3-2-2 is fitted on the top of the universal wheel 1-3-2-1. One end of pedal 1-3-2-5 located inside the mounting cover 1-3-1 is provided with a pin 1-3-2-6 and is rotatably connected to the inside of the mounting cover 1-3-1 through the pin 1-3-2-6. A sprocket is fixedly connected to the pin 1-3-2-6. The transmission structure includes a hinge 1-3-2-4, one end of which is fixedly connected to the sprocket, and the other end is fixedly connected to the top of the universal wheel 1-3-2-1. A torsion spring 1-3-2-7 is fitted on the pin 1-3-2-6. One end of the torsion spring 1-3-2-7 is connected to the sprocket, and the other end is connected to the inner wall of the mounting cover 1-3-1. When the movable end of pedal 1-3-2-5 is pressed, the pin 1-3-2-6 rotates, which in turn drives the sprocket to rotate. The sprocket coils the hinge 1-3-2-4, thereby lifting the caster wheel 1-3-2-1. Torsion spring 1-3-2-7 is used to reset pedal 1-3-2-5.

[0040] like Figure 8 and Figure 9 As shown, to effectively limit the movement of the caster wheel 1-3-2-1 by the locking assembly 1-4, the locking assembly 1-4 includes a pin sleeve 1-4-4 axially fixed to the bottom end of the upright 1-1 and a locking pin 1-4-1 coaxially slidably installed within the pin sleeve 1-4-4. An annular partition 1-4-2 is provided on the outer wall of the locking pin 1-4-1. A locking spring 1-4-3 is fitted onto the locking pin 1-4-1, located between the pin sleeve 1-4-4 and the partition 1-4-2. A pull ring 1-4 is connected to one end of the locking pin 1-4-1. -5. The pull ring 1-4-5 and the locking spring 1-4-3 are located on both sides of the locking pin 1-4-1. The pull ring 1-4-5 is located on the outside of the upright 1-1. When one end of the locking pin 1-4-1 contacts the top of the caster 1-3-2-1, the locking spring 1-4-3 is compressed. The top of the caster 1-3-2-1 has a keyway 1-3-2-3 vertically arranged, and the locking pin 1-4-1 is located directly above the keyway 1-3-2-3. When the upright 1-1 is in a movable state, the caster 1-3-2-1 contacts the partition 1-4-2 through the telescopic spring 1-4-3, supporting the upright 1-1. When the upright 1-1 is in a fixed state, the telescopic spring 1-4-3 is compressed, and the locking pin 1-4-1 is inserted into the keyway 1-3-2-3.

[0041] like Figure 1 and Figure 2As shown, to improve the stability of the upright 1-1 when placed on the ground, a frustum-shaped upright base 1-1-1 is coaxially fixed to the bottom end of the upright 1-1. The bottom of the upright base 1-1-1 has a circular groove for accommodating the caster wheel 1-3-2-1.

[0042] like Figure 10 and Figure 11 As shown, the fence panel 2 is securely mounted between the two fence support rods 1 for easy installation. The fence panel 2 includes a rectangular panel 2-2 and mounting holes 2-1 located at both ends of the panel 2-2. The mounting holes 2-1 are located at the four corners of the panel 2-2.

[0043] A method for moving a movable safety fence includes the following steps: Step 1: Frame construction. Based on the area to be fenced, place fence support rods 1 at equal intervals along the perimeter of the area to be fenced. By stepping on the pedal 1-3-2-5, the pedal 1-3-2-5 drives the pin 1-3-2-6 to rotate, which in turn drives the sprocket to rotate and retracts the hinge 1-3-2-4. The bottom end of the hinge 1-3-2-4 raises the caster 1-3-2-1. During the ascent of the caster 1-3-2-1, the locking spring 1-4-3 pushes the locking pin 1-4-1 into the keyway 1-3-2-3 through the partition 1-4-2. The caster 1-3-2-1 then enters the groove of the upright base 1-1-1, achieving high-position locking of the caster 1-3-2-1. The distance between adjacent fence support rods 1 is equal to the length of fence baffle 2. According to the required fence height, select the number of brackets 1-2-1 and adjusting sleeves 1-2-2 fitted on the uprights 1-1, and fix the brackets 1-2-1 and adjusting sleeves 1-2-2 through the end caps 1-2-3; Step 2, fence construction, by rotating the brackets 1-2-1, the locking pins 1-2-1-4 between adjacent brackets 1-2-1 are aligned. The fence baffle 2 is installed between adjacent fence support rods 1 through the mounting hole 2-1 at the end of the fence baffle 2 and the locking pin 1-2-1-4 on the bracket 1-2-1. Warning statements and signs are affixed to the panel 2-2 of the fence baffle 2. Step 3: Disassembly and relocation. Remove the fence panel 2 from the fence support rod 1. Pull the locking pin 1-4-1 outward through the pull ring 1-4-5, so that the end of the locking pin 1-4-1 is pulled out from the keyway 1-3-2-3. Through the elastic reset of the compressed telescopic spring 1-3-2-2, push the caster wheel 1-3-2-1 out from the upright base 1-1-1. The caster wheel 1-3-2-1 pushes the fence support rod 1 to move.

Claims

1. A portable security fence, characterised in that: The fence support rod (1) comprises a vertical rod (1-1), the vertical rod (1-1) is axially sleeved with a vertical rod support assembly (1-2) for horizontally connecting the fence baffle (2), the bottom of the vertical rod (1-1) is provided with a wheel device (1-3), the wheel device (1-3) comprises a lifting type wheel assembly (1-3-2) and an arc plate type mounting cover (1-3-1) for mounting the wheel assembly (1-3-2), the wheel assembly (1-3-2) comprises a pedal (1-3-2-5) for driving a universal wheel (1-3-2-1) at the bottom of the wheel assembly (1-3-2) to move upward by stepping and a locking assembly (1-4) which can be horizontally slid into a key groove (1-3-2-3) at the top of the universal wheel (1-3-2-1) and limits the lifting of the universal wheel (1-3-2-1), the universal wheel (1-3-2-1) is connected to the bottom of the vertical rod (1-1) through an elastic support structure, the locking assembly (1-4) is arranged in the bottom of the vertical rod (1-1) and can be inserted and pulled out along the radial direction of the vertical rod (1-1), and the locking assembly (1-4) is horizontally supported by a locking spring (1-4-3). The locking assembly (1-4) comprises a pin sleeve (1-4-4) fixedly connected to the bottom end of the vertical rod (1-1) in the axial direction and a locking pin (1-4-1) coaxially and slidingly installed in the pin sleeve (1-4-4), an annular partition plate (1-4-2) is arranged on the outer wall of the locking pin (1-4-1), the locking spring (1-4-3) is sleeved on the locking pin (1-4-1), the locking spring (1-4-3) is located between the pin sleeve (1-4-4) and the partition plate (1-4-2), one end of the locking pin (1-4-1) is connected with a pull ring (1-4-5), the pull ring (1-4-5) and the locking spring (1-4-3) are located on the two sides of the locking pin (1-4-1) respectively, the pull ring (1-4-5) is located outside the vertical rod (1-1), when one end of the locking pin (1-4-1) contacts the top of the universal wheel (1-3-2-1), the locking spring (1-4-3) is in a compressed state, the top of the universal wheel (1-3-2-1) is vertically provided with a key groove (1-3-2-3), and the locking pin (1-4-1) is located directly above the key groove (1-3-2-3).

2. The portable security fence of claim 1, wherein: The bottom of the vertical rod (1-1) is provided with a baffle (1-1-4) for supporting the vertical rod supporting assembly (1-2), the vertical rod supporting assembly (1-2) comprises a bracket (1-2-1), an adjusting sleeve (1-2-2) and an end cover (1-2-3), the bracket (1-2-1) and the adjusting sleeve (1-2-2) are sleeved on the vertical rod (1-1), the opposite sides of the bracket (1-2-1) are provided with inclined tables, and the top of the inclined table is fixedly connected with a locking pin (1-2-1-3) for inserting the end opening of the fence baffle (2), the adjusting sleeve (1-2-2) is tubular, and the two end walls of the adjusting sleeve (1-2-2) are attached to the top wall or the bottom wall of the bracket (1-2-1), the top end of the vertical rod (1-1) is provided with an internal thread (1-1-5), the bottom end of the end cover (1-2-3) is provided with a columnar protrusion, and the bottom of the columnar protrusion is provided with a connecting thread (1-2-3-3) connectable with the internal thread (1-1-5).

3. The portable security fence of claim 2, wherein: The top end of the locking pin (1-2-1-3) is provided with a pin hole (1-2-1-4) for fixing the fence baffle (2).

4. The portable security fence of claim 2, wherein: The outer wall of the end cover (1-2-3) is provided with knurling (1-2-3-1).

5. The portable security fence of claim 1, wherein: The bottom of the vertical rod (1-1) is provided with a mounting groove (1-1-3), the mounting cover (1-3-1) is mounted in the mounting groove (1-1-3), the inner bottom of the vertical rod (1-1) is provided with a partition ring (1-1-2), the partition ring (1-1-2) is located below the mounting groove (1-1-3), one end of the pedal (1-3-2-5) is horizontally rotationally connected to the inner side of the mounting cover (1-3-1), the outer wall of the mounting cover (1-3-1) is vertically provided with a guide groove (1-3-1-1), the middle part of the pedal (1-3-2-5) is slidingly arranged in the guide groove (1-3-1-1), the pedal (1-3-2-5) located at the inner side of the mounting cover (1-3-1) is connected to the universal wheel (1-3-2-1) through a transmission structure, the top end of the universal wheel (1-3-2-1) is connected to the rotating end of the pedal (1-3-2-5) through a transmission structure, the transmission structure is wound on the rotating end of the pedal (1-3-2-5), the elastic support structure is a telescopic spring (1-3-2-2) between the universal wheel (1-3-2-1) and the partition ring (1-1-2), the top end of the telescopic spring (1-3-2-2) is in contact with the bottom surface of the partition ring (1-1-2), and the top end outer diameter of the universal wheel (1-3-2-1) is smaller than the inner diameter of the partition ring (1-1-2).

6. The portable security fence of claim 5, wherein: The telescopic spring (1-3-2-2) is sleeved on the top of the universal wheel (1-3-2-1), the pedal (1-3-2-5) is provided with a pin shaft (1-3-2-6) at one end inside the mounting cover (1-3-1) and is rotatably connected to the mounting cover (1-3-1) through the pin shaft (1-3-2-6), a sprocket is fixedly connected to the pin shaft (1-3-2-6), the transmission structure comprises a hinge (1-3-2-4), one end of the hinge (1-3-2-4) is fixedly connected to the sprocket, the other end is fixedly connected to the top end of the universal wheel (1-3-2-1), the pin shaft (1-3-2-6) is sleeved with a torsion spring (1-3-2-7), one end of the torsion spring (1-3-2-7) is connected to the sprocket, and the other end is connected to the inner wall of the mounting cover (1-3-1).

7. The portable security fence of claim 1, wherein: The bottom end of the vertical rod (1-1) is coaxially fixedly provided with a circular table-shaped vertical rod base (1-1-1), and a circular groove for accommodating the universal wheel (1-3-2-1) is formed in the bottom of the vertical rod base (1-1-1).

8. The portable security fence of claim 1, wherein: The fence baffle (2) comprises a rectangular panel (2-2) and a hanging hole (2-1) arranged at both ends of the panel (2-2), and the hanging hole (2-1) is located at the four corners of the panel (2-2).

9. A method of moving a portable security fence, the method comprising: The safety fence comprises a fence support rod (1) and a fence baffle (2) connected between two adjacent fence support rods (1), the fence support rod (1) comprises a vertical rod (1-1), the vertical rod (1-1) is sleeved with a vertical rod support assembly (1-2) for horizontally connecting the fence baffle (2) along the axial direction, the bottom of the vertical rod (1-1) is provided with a wheel device (1-3), the wheel device (1-3) comprises a lifting wheel assembly (1-3-2) and an arc-shaped plate-shaped mounting cover (1-3-1) for mounting the wheel assembly (1-3-2), the wheel assembly (1-3-2) comprises a pedal (1-3-2-5) for driving the universal wheel (1-3-2-1) at the bottom end of the wheel assembly (1-3-2) to move upward by stepping and a locking assembly (1-4) which can be horizontally slid into a key groove (1-3-2-3) at the top of the universal wheel (1-3-2-1) and limits the lifting of the universal wheel (1-3-2-1), the universal wheel (1-3-2-1) is connected to the bottom of the vertical rod (1-1) through an elastic support structure, the locking assembly (1-4) is arranged in the bottom of the vertical rod (1-1) and is pluggable along the radial direction of the vertical rod (1-1), and the locking assembly (1-4) is horizontally supported by a locking spring (1-4-3). The locking assembly (1-4) comprises a pin sleeve (1-4-4) fixedly connected to the bottom end of the vertical rod (1-1) in the axial direction and a locking pin (1-4-1) coaxially and slidingly installed in the pin sleeve (1-4-4), an annular partition plate (1-4-2) is arranged on the outer wall of the locking pin (1-4-1), a locking spring (1-4-3) is sleeved on the locking pin (1-4-1), the locking spring (1-4-3) is located between the pin sleeve (1-4-4) and the partition plate (1-4-2), one end of the locking pin (1-4-1) is connected with a pull ring (1-4-5), the pull ring (1-4-5) and the locking spring (1-4-3) are located on the two sides of the locking pin (1-4-1) respectively, the pull ring (1-4-5) is located outside the vertical rod (1-1), when one end of the locking pin (1-4-1) is in contact with the top of the universal wheel (1-3-2-1), the locking spring (1-4-3) is in a compressed state, a key groove (1-3-2-3) is vertically arranged on the top of the universal wheel (1-3-2-1), and the locking pin (1-4-1) is located directly above the key groove (1-3-2-3); The bottom of the vertical rod (1-1) is provided with a baffle (1-1-4) for supporting the vertical rod supporting assembly (1-2), the vertical rod supporting assembly (1-2) comprises a bracket (1-2-1), an adjusting sleeve (1-2-2) and an end cover (1-2-3), the bracket (1-2-1) and the adjusting sleeve (1-2-2) are sleeved on the vertical rod (1-1), the opposite sides of the bracket (1-2-1) are both provided with inclined tables, and the inclined tables are fixedly connected with locking pins (1-2-1-3) for being inserted into end opening holes of the fence baffle (2) at the top of the inclined tables, the adjusting sleeve (1-2-2) is tubular, and the two end walls of the adjusting sleeve (1-2-2) are both adherable to the top wall or the bottom wall of the bracket (1-2-1), the top end of the vertical rod (1-1) is provided with an internal thread (1-1-5), the bottom end of the end cover (1-2-3) is provided with a columnar protrusion, and the bottom of the columnar protrusion is provided with a connecting thread (1-2-3-3) connectable with the internal thread (1-1-5). The bottom of the vertical rod (1-1) is provided with a mounting groove (1-1-3), the mounting cover (1-3-1) is mounted in the mounting groove (1-1-3), the inner bottom of the vertical rod (1-1) is provided with a partition ring (1-1-2), the partition ring (1-1-2) is located below the mounting groove (1-1-3), one end of the pedal (1-3-2-5) is horizontally rotationally connected to the inner side of the mounting cover (1-3-1), the outer wall of the mounting cover (1-3-1) is vertically provided with a guide groove (1-3-1-1), the middle part of the pedal (1-3-2-5) is slidably arranged in the guide groove (1-3-1-1), the pedal (1-3-2-5) located on the inner side of the mounting cover (1-3-1) is connected to the universal wheel (1-3-2-1) through a transmission structure, the top end of the universal wheel (1-3-2-1) is connected to the rotating end of the pedal (1-3-2-5) through a transmission structure, the transmission structure is wound on the rotating end of the pedal (1-3-2-5), the elastic support structure is a telescopic spring (1-3-2-2) between the universal wheel (1-3-2-1) and the partition ring (1-1-2), the top end of the telescopic spring (1-3-2-2) is in contact with the bottom surface of the partition ring (1-1-2), the top end outer diameter of the universal wheel (1-3-2-1) is smaller than the inner diameter of the partition ring (1-1-2); The telescopic spring (1-3-2-2) is sleeved on the top of the universal wheel (1-3-2-1), one end of the pedal (1-3-2-5) located on the inner side of the mounting cover (1-3-1) is provided with a pin shaft (1-3-2-6) and is rotationally connected to the mounting cover (1-3-1) through the pin shaft (1-3-2-6), a sprocket is fixedly connected to the pin shaft (1-3-2-6), the transmission structure comprises a hinge (1-3-2-4), one end of the hinge (1-3-2-4) is fixedly connected to the sprocket, the other end is fixedly connected to the top end of the universal wheel (1-3-2-1), a torsion spring (1-3-2-7) is sleeved on the pin shaft (1-3-2-6), one end of the torsion spring (1-3-2-7) is connected to the sprocket, the other end is connected to the inner wall of the mounting cover (1-3-1); The bottom end of the vertical rod (1-1) is coaxially fixedly provided with a circular table-shaped vertical rod base (1-1-1), the bottom of the vertical rod base (1-1-1) is provided with a circular groove for accommodating the universal wheel (1-3-2-1); The fence baffle (2) comprises a rectangular panel (2-2) and hanging holes (2-1) arranged at both ends of the panel (2-2), the hanging holes (2-1) are located at the four corners of the panel (2-2); The method comprises the following steps: Step one, skeleton building, according to the need to fence area, along the need to fence area periphery equidistantly place fence support rod (1), through the treadle (1-3-2-5) is stepped on, make the treadle (1-3-2-5) drive pin shaft (1-3-2-6) rotation, further drive sprocket rotation, and to the hinge (1-3-2-4) are wound, the bottom end of hinge (1-3-2-4) promotes universal wheel (1-3-2-1) in universal wheel (1-3-2-1) ascending process, locking spring (1-4-3) promotes locking lock pin (1-4-1) into keyway (1-3-2-3) by baffle (1-4-2), universal wheel (1-3-2-1) enters the round slot of vertical rod base (1-1-1), realize the high position locking of universal wheel (1-3-2-1), the distance between adjacent fence support rod (1) is equal to the length of fence baffle (2), according to the height of the required fence, the number of support (1-2-1) and adjusting sleeve (1-2-2) on the vertical rod (1-1) is selected, and the fixing of support (1-2-1) and adjusting sleeve (1-2-2) is carried out through end cover (1-2-3); Step two, fence building, by rotating support (1-2-1), make the lock pin (1-2-1-3) between adjacent support (1-2-1) align, through the hanging hole (2-1) at the end of fence baffle (2) and the lock pin (1-2-1-3) on the support (1-2-1) cooperate, install the fence baffle (2) between adjacent fence support rod (1), and paste warning statements and signs on the panel (2-2) of fence baffle (2); Step three, disassembly and removal, take down the fence baffle (2) from the fence support rod (1), pull the locking lock pin (1-4-1) outwards through the pull ring (1-4-5), make the end of locking lock pin (1-4-1) pull out from the keyway (1-3-2-3), through the elastic reset of compressed extension spring (1-3-2-2), push universal wheel (1-3-2-1) out of vertical rod base (1-1-1), move the fence support rod (1) through universal wheel (1-3-2-1).

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