A prefabricated fence for construction and its assembly method

Abstract

This invention relates to the field of fencing technology, specifically to a prefabricated fence for construction and its assembly method. A prefabricated fence includes a fence body, which includes a support portion and a connecting portion. The support portion includes uprights. The connecting portion includes a connecting frame disposed between adjacent uprights. Each upright includes a connecting post, and a rotatable rotating component is provided between adjacent connecting posts. The connecting frame includes staggered first and second hollow rods, and a connecting mechanism for connecting the first and second hollow rods. The rotating component is provided with a connecting component that cooperates with the connecting mechanism to connect adjacent connecting posts and connect the rotating component to the connecting mechanism. The prefabricated fence assembly method includes installing the uprights, installing the connecting frame, and assembling the fence. It facilitates installation and disassembly, and can be assembled into fences suitable for different pit shapes, thus enabling workers to easily install or disassemble the fence on-site.

Description

Technical Field

[0001] This invention relates to the field of fencing technology, and more specifically, to a prefabricated fence for construction and its assembly method. Background Technology

[0002] Most existing foundation pit fences consist of guardrail posts and guardrail mesh. When installing foundation pit fences, workers first set up guardrail posts around the foundation pit, then set up guardrail mesh between adjacent guardrail posts, and finally connect the guardrail mesh to the guardrail posts.

[0003] There are generally two ways to connect guardrail posts and fence netting. One method is to fix the fence netting to the guardrail posts with bolts. With this method, the guardrail posts and fence netting are fixed together, and the fence netting cannot rotate on the guardrail posts. Therefore, the fence can only be formed into a rectangular shape. Since the shape of the foundation pit is not fixed, this type of fence covers a large area and requires a large number of fences. The other method is to connect them with hinges. Although this method allows the fence netting to rotate on the guardrail posts, allowing the fence to be formed into different shapes according to the shape of the foundation pit, it saves on the number of fences used. However, the fence netting is larger, so multiple workers need to lift the fence netting during installation, and then one worker needs to fix the fence netting to the guardrail posts with bolts. At the same time, since the foundation pit is large, workers need to install the fence netting along the outer edge of the foundation pit, which increases the labor intensity of the workers and is also inconvenient for on-site installation of the fence. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a prefabricated fence for construction and its assembly method. It facilitates easy installation and disassembly, and can be assembled to fit different pit shapes, thus enabling workers to easily install or dismantle the fence on-site.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A prefabricated fence includes a fence body, which includes a support section and a connecting section. The support section includes multiple uprights erected along the perimeter of a foundation pit. The connecting section includes a connecting frame disposed between adjacent uprights. Each upright includes multiple connecting posts arranged vertically, and a rotatable rotating component is provided between adjacent connecting posts. The connecting frame includes staggered first hollow bars and second hollow bars, and a connecting mechanism for connecting the first hollow bars and the second hollow bars. The rotating component is provided with a connecting component that cooperates with the connecting mechanism to connect adjacent connecting posts and to connect the rotating component and the connecting mechanism.

[0007] The design of the fence body, uprights, connecting frame, connecting column, rotating component, first hollow pole, second hollow pole, connecting mechanism, and connecting component of this invention facilitates workers in installing uprights of different heights according to the terrain; it also makes the prefabricated fence adaptable to foundation pits of different shapes, thereby saving the number of fences needed and reducing costs; at the same time, it facilitates worker handling and on-site installation.

[0008] Preferably, the rotating assembly includes a limiting rod disposed between adjacent connecting columns. The outer wall of the middle end of the limiting rod expands outward in the circumferential direction to form a first flange. The outer wall of the limiting rod near the first flange expands outward in the circumferential direction to form a second flange. The outer wall of the second flange away from the first flange expands outward in the circumferential direction to form a third flange. A rotating disk is provided at each of the two second flanges. The rotating disk has an elliptical through hole for the second flange to pass through. The outer wall of the elliptical through hole near the opening of the third flange expands outward to form an installation step for the third flange to extend into. The connecting column has a first through hole arranged along the axial direction of the connecting column for the limiting rod to extend into.

[0009] The invention effectively prevents the rotating disk from detaching from the second flange by using a limiting rod, a first flange, a second flange, a third flange, a rotating disk, an elliptical through hole, a mounting step, and a first through hole.

[0010] Preferably, the connecting mechanism includes a four-way pipe, which includes a first sub-pipe, a second sub-pipe, a third sub-pipe, and a fourth sub-pipe; the outer walls of the first sub-pipe, the second sub-pipe, and the third sub-pipe are each provided with a second through hole communicating with the interior of the first sub-pipe, the second sub-pipe, and the third sub-pipe; the outer walls of the first hollow rod and the second hollow rod are provided with a fourth through hole corresponding to the second through hole;

[0011] The inner diameter of the second sub-tube gradually decreases from that of the fourth sub-tube. Both the second and fourth sub-tubes contain a first conical block that matches their inner diameter. A fifth through hole is located along the axial direction of the first conical block. A connecting rod passes through the fifth through hole at the first conical block. An L-shaped locking block is located at one end of the connecting rod extending out of the fourth sub-tube. A baffle is located at one end of the connecting rod extending out of the second sub-tube. A spring fitted onto the connecting rod is located between the baffle and the first conical block. A steel ball is located inside the second through hole.

[0012] Both the first and third sub-tubes are equipped with a second conical block that mates with the first conical block. A spring pushes the first conical block into the second and fourth sub-tubes. The first conical block pushes the steel ball in the second sub-tube out of the second through hole and pushes the two second conical blocks to move in opposite directions. The two second conical blocks push the steel ball in the first and third sub-tubes out of the second through hole respectively. The steel ball partially passes through the second through hole and extends into the fourth through hole, where the inner diameter of the fourth through hole is smaller than the outer diameter of the steel ball.

[0013] The four-way pipe, first sub-pipe, second sub-pipe, third sub-pipe, fourth sub-pipe, second through hole, fourth through hole, first conical block, fifth through hole, connecting rod, locking block, baffle, spring, steel ball and second conical block in this invention make it easier for workers to assemble and connect the frame.

[0014] Preferably, the connecting component includes a first arc-shaped plate disposed on the outer wall of the rotating disk, a connecting block disposed at one end of the first arc-shaped plate away from the rotating disk, and a groove formed by the inward recess of the end of the connecting block away from the first arc-shaped plate, a stop block disposed in the groove, the stop block dividing the groove into a U-shaped groove with a U-shaped cross section, and the locking block being inserted into the U-shaped groove and fitting against the stop block;

[0015] A second arc plate is provided on the outer wall of the rotating disk away from the first arc plate, facing in the opposite direction to the first arc plate. A third arc plate is provided on the outer wall of the second arc plate away from the rotating disk, parallel to the rotating disk. Annular grooves for inserting the third arc plate are provided on the outer walls of both the upper and lower ends of the connecting column.

[0016] The arrangement of the first arc-shaped plate, connecting block, stop block, U-shaped groove, second arc-shaped plate, third arc-shaped plate and annular groove in this invention effectively prevents the connecting column from moving axially.

[0017] Preferably, each of the first, second, and third sub-through pipes is provided with a sleeve fitted onto the outer wall of the first, second, and third sub-through pipes, and the side wall of the sleeve is provided with a third through hole corresponding to the second through hole, the diameter of the third through hole being smaller than the diameter of the second through hole.

[0018] The sleeve and third through hole in this invention effectively prevent the steel ball from falling out of the second through hole during installation.

[0019] Preferably, the outer walls of the first, second, and third sub-pipes are provided with collars that cooperate with the sleeve.

[0020] The collar design in this invention prevents the sleeves on the first, second, and third sub-pipes from coming into contact with each other during installation, causing compression and damage.

[0021] Preferably, the limiting rod is provided with a sixth through hole arranged along the axial direction of the limiting rod.

[0022] The sixth through hole in this invention increases the structural strength of the upright and prevents the limiting rod from being squeezed and deformed.

[0023] Preferably, the end of the card block near the connecting rod is provided with a limiting groove for the connecting rod to be inserted.

[0024] The limiting groove in this invention makes it easier for installers to connect the locking block to the connecting rod.

[0025] Preferably, the ends of the two second conical blocks that contact the first conical block are provided with inclined surfaces.

[0026] The inclined surface in this invention facilitates the first conical block to push the second conical block.

[0027] This invention relates to a prefabricated fence assembly method, comprising the following steps:

[0028] S1: Install the uprights. First, the workers will bury the connecting columns around the foundation pit. Then, they will place the rotating components and connecting columns in sequence along the height of the connecting columns. After determining the height, the uprights will be formed.

[0029] S2: Install the connecting frame. Based on the number of rotating components in S1, select the corresponding number of four-way pipes. Connect the two ends of the first hollow rod to the second sub-pipes of the two four-way pipes respectively. Then connect the two ends of the second hollow rod to the first and third sub-pipes of the two four-way pipes respectively. Based on the number of four-way pipes, splice the corresponding number of first hollow rods and second hollow rods to form the connecting frame.

[0030] S3: Assemble the fence. After the uprights and connecting frame are installed, the workers lift the connecting frame and then pull the locking block at the fourth sub-pipe. The locking block pulls the connecting rod, which in turn drives the baffle to squeeze the spring. Then, the locking block is inserted into the U-shaped groove. After the locking block is inserted into the U-shaped groove, the spring pushes the baffle, which in turn drives the connecting rod to pull the locking block to move. At this time, the locking block pulls the stop block, which in turn pulls the rotating disc to move, so that the third arc plate on the second arc plate is inserted into the annular groove. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the main body of the fence in Example 1.

[0032] Figure 2 This is a schematic diagram of the upright pole in Example 1.

[0033] Figure 3 This is a schematic diagram of the connecting column and rotating assembly in Example 1.

[0034] Figure 4 This is a schematic diagram of the connection frame in Example 1.

[0035] Figure 5 This is a schematic diagram of the first flange, second flange, limiting rod, sixth through hole and third flange in Embodiment 1.

[0036] Figure 6 This is a schematic diagram of the rotating assembly in Example 1.

[0037] Figure 7 This is a schematic diagram of the connecting column in Example 1.

[0038] Figure 8 This is a schematic diagram of the connecting mechanism in Example 1.

[0039] Figure 9 This is a schematic diagram of the four-way pipe in Example 1.

[0040] Figure 10 This is a schematic diagram of the sleeve in Example 1.

[0041] Figure 11 This is a schematic diagram of the card block in Example 1.

[0042] Figure 12 This is a schematic diagram of the first conical block in Example 1.

[0043] Figure 13 This is a cross-sectional view of the main body of the fence in Example 1.

[0044] Figure 14 This is a cross-sectional view of the rotating assembly in Example 1.

[0045] Figure 15 This is a cross-sectional view of the connecting mechanism in Embodiment 1.

[0046] Figure 16 This is a cross-sectional view of the rotating disk in Example 1. Detailed Implementation

[0047] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0048] Example 1

[0049] like Figure 1-16 As shown, this embodiment provides a prefabricated fence, which includes a fence body 100, the fence body 100 including a support part and a connecting part; the support part includes a plurality of uprights 120 erected along the periphery of the foundation pit; the connecting part includes a connecting frame 110 disposed between adjacent uprights 120; the uprights 120 include a plurality of connecting posts 210 arranged in the vertical direction, and a rotatable rotating component 220 is provided between adjacent connecting posts 210; the connecting frame 110 includes staggered first hollow rods 130 and second hollow rods 140, and a connecting mechanism for connecting the first hollow rods 130 and the second hollow rods 140; the rotating component 220 is provided with a connecting component that cooperates with the connecting mechanism to connect adjacent connecting posts 210 and connect the rotating component 220 and the connecting mechanism.

[0050] The arrangement of the fence body 100, uprights 120, connecting frame 110, connecting posts 210, rotating assembly 220, first hollow pole 130, second hollow pole 140, connecting mechanism, and connecting assembly in this embodiment allows workers to first assemble the uprights 120, then bury multiple connecting posts 210 around the perimeter of the foundation pit. Next, the rotating assembly 220 and connecting posts 210 are installed sequentially along the height direction of the connecting posts 210 until the uprights 120 reach the predetermined height. This facilitates workers installing uprights 120 of different heights according to the terrain. Once the uprights 120 reach the required height, the connecting frame 110 is assembled. The connecting mechanism connects the staggered first hollow poles 130 and second hollow poles 140 to form the connecting frame 110. Workers then install the connecting frame... 110 is lifted, and one end of the connecting frame 110 is connected to the rotating component 220 through the connecting assembly. Then, the worker pushes the connecting frame 110 to rotate around the rotating component 220, thereby adjusting the rotation angle of the connecting frame 110 to adapt to different shapes of foundation pits. After the angle adjustment is completed, the other end of the connecting frame 110 is connected to the rotating component 220 at the adjacent upright 120 through the connecting assembly. This makes it easier for the prefabricated fence to adapt to foundation pits of different shapes, thus saving the number of fences used and reducing costs. At the same time, since the uprights 120 and the connecting frame 110 of the prefabricated fence are assembled, the various parts are small in size, which makes it easy for workers to handle and install on site.

[0051] In this embodiment, the rotating assembly 220 includes a limiting rod 530 disposed between adjacent connecting posts 210. The outer wall of the middle end of the limiting rod 530 expands outward in the circumferential direction to form a first flange 510. The outer wall of the limiting rod 530 near the first flange 510 expands outward in the circumferential direction to form a second flange 520. The outer wall of the second flange 520 away from the first flange 510 expands outward in the circumferential direction to form a third flange 550. A rotating disk 620 is provided at each of the two second flanges 520. The rotating disk 620 is provided with an elliptical through hole 610 for the second flange 520 to pass through. The outer wall of the elliptical through hole 610 near the opening of the third flange 550 expands outward to form an installation step 690 for the third flange 550 to extend into. The connecting post 210 is provided with a first through hole 720 disposed along the axial direction of the connecting post 210 and for the limiting rod 530 to extend into.

[0052] With the arrangement of the limiting rod 530, the first flange 510, the second flange 520, the third flange 550, the rotating disk 620, the elliptical through hole 610, the mounting step 690, and the first through hole 720 in this embodiment, the first flange 510 is located between two adjacent connecting posts 210, and the limiting rod 530 is inserted into the first through hole 720 on the two adjacent connecting posts 210, thereby better preventing the connecting posts 210 from shaking; the rotating disk 620 is fitted on the second flange 520, and the third flange 550 extends into the mounting step 690 on the rotating disk 620, thereby better preventing the rotating disk 620 from detaching from the second flange 520.

[0053] In this embodiment, the connecting mechanism includes a four-way pipe 810, which includes a first sub-pipe 920, a second sub-pipe 930, a third sub-pipe 940, and a fourth sub-pipe 960. The outer walls of the first sub-pipe 920, the second sub-pipe 930, and the third sub-pipe 940 are each provided with a second through hole 910 communicating with the interior of the first sub-pipe 920, the second sub-pipe 930, and the third sub-pipe 940. The outer walls of the first hollow rod 130 and the second hollow rod 140 are provided with a fourth through hole 1504 corresponding to the second through hole 910.

[0054] The inner diameter of the second sub-tube 930 gradually decreases from the inner diameter of the fourth sub-tube 960. The second and fourth sub-tubes 930 and 960 each have a first conical block 1101 that matches its inner diameter. The first conical block 1101 has a fifth through hole 1201 along its axial direction. A connecting rod 860 passes through the fifth through hole 1201 at the first conical block 1101. One end of the connecting rod 860 extending out of the fourth sub-tube 960 has an L-shaped locking block 410. One end of the connecting rod 860 extending out of the second sub-tube 930 has a baffle 840. A spring 830 is fitted onto the connecting rod 860 between the baffle 840 and the first conical block 1101. A steel ball 820 is located inside the second through hole 910.

[0055] Both the first sub-tube 920 and the third sub-tube 940 are equipped with a second conical block 1501 that cooperates with the first conical block 1101. The spring 830 pushes the first conical block 1101 to extend into the second sub-tube 930 and the fourth sub-tube 960. The first conical block 1101 pushes the steel ball 820 at the second sub-tube 930 to extend out of the second through hole 910, and pushes the two second conical blocks 1501 to move in opposite directions. The two second conical blocks 1501 respectively push the steel ball 820 at the first sub-tube 920 and the third sub-tube 940 to extend out of the second through hole 910. The steel ball 820 partially passes through the second through hole 910 and extends into the fourth through hole 1504. The inner diameter of the fourth through hole 1504 is smaller than the outer diameter of the steel ball 820.

[0056] Through the arrangement of the four-way pipe 810, the first sub-through pipe 920, the second sub-through pipe 930, the third sub-through pipe 940, the fourth sub-through pipe 960, the second through hole 910, the fourth through hole 1504, the first conical block 1101, the fifth through hole 1201, the connecting rod 860, the locking block 410, the baffle 840, the spring 830, the steel ball 820, and the second conical block 1501 in this embodiment, when assembling the connecting frame 110, the worker first inserts the second sub-through pipe 930 into one end of the first hollow rod 130, so that the fourth through hole 1504 on the first hollow rod 130 corresponds to the second through hole 910 on the second sub-through pipe 930. Then, the first sub-through pipe 920 and the third sub-through pipe 940 are respectively inserted into one end of the two second hollow rods 140, so that the first sub-through pipe 920 and the third sub-through pipe 940 correspond to each other. The second through hole 910 on 940 corresponds to the fourth through hole 1504 on the second hollow rod 140. At this time, the spring 830 will push the first conical block 1101 to extend into the second sub-through pipe 930 and the fourth sub-through pipe 960. At the same time, the outer wall of the first conical block 1101 will squeeze the second conical block 1501, causing the two second conical blocks 1501 to move in opposite directions. At this time, the two second conical blocks 1501 will push the steel ball 820 in the second through hole 910 on the first sub-through pipe 920 and the third sub-through pipe 940 to extend out of the second through hole 910 and into the fourth through hole 1504. The first conical block 1101 will push the steel ball 820 in the second through hole 910 at the second sub-through pipe 930 to extend out of the second through hole 910 and into the fourth through hole 1504. This makes it easier for workers to assemble and connect the frame 110.

[0057] In this embodiment, the connecting component includes a first arc-shaped plate 680 disposed on the outer wall of the rotating disk 620. A connecting block 650 is provided at one end of the first arc-shaped plate 680 away from the rotating disk 620. The end of the connecting block 650 away from the first arc-shaped plate 680 is recessed inward to form a groove. A stop block 660 is provided in the groove. The stop block 660 divides the groove into a U-shaped groove 870 with a U-shaped cross-section. The locking block 410 is locked into the U-shaped groove 870 and fits against the stop block 660.

[0058] A second arc plate 630 is provided on the outer wall of the rotating disk 620 away from the first arc plate 680, which faces the opposite direction to the first arc plate 680. A third arc plate 640 is provided on the outer wall of the second arc plate 630 away from the rotating disk 620, which is parallel to the rotating disk 620. Annular grooves 710 for the third arc plate 640 to be inserted are provided on the outer walls of both the upper and lower ends of the connecting column 210.

[0059] With the arrangement of the first arc plate 680, connecting block 650, stop block 660, U-shaped groove 870, second arc plate 630, third arc plate 640 and annular groove 710 in this embodiment, when the worker connects the connecting frame 110 to the upright 120, he first pulls the locking block 410, thereby driving the connecting rod 860 to move and extend out of the fifth through hole 1201. The movement of the connecting rod 860 causes the stop plate 840 to compress the spring 830. Then, the locking block 410 is locked into the U-shaped groove 870. At this time, the spring 830 will push the stop plate 840 to move, thereby pulling the connecting rod 860 back into the fifth through hole 1201. The retraction of the connecting rod 860 will pull the stop block 660, thereby pulling the rotating disk 620 to move, so that the third arc plate 640 on the rotating disk 620 is locked into the annular groove 710 on the connecting column 210, thereby better preventing the connecting column 210 from moving axially.

[0060] In this embodiment, each of the first sub-tube 920, the second sub-tube 930, and the third sub-tube 940 is provided with a sleeve 850 that is fitted onto the outer wall of the first sub-tube 920, the second sub-tube 930, and the third sub-tube 940. The side wall of the sleeve 850 is provided with a third through hole 1001 corresponding to the second through hole 910. The diameter of the third through hole 1001 is smaller than the diameter of the second through hole 910.

[0061] With the sleeve 850 and the third through hole 1001 in this embodiment, after the installer puts the steel ball 820 into the second through hole 910, the sleeve 850 is respectively put on the first sub-through pipe 920, the second sub-through pipe 930 and the third sub-through pipe 940, so that the third through hole 1001 on the sleeve 850 corresponds to the second through hole 910, so that the steel ball 820 is stuck in the third sub-through pipe 940, preventing the first conical block 1101 and the second conical block 1501 from pushing the steel ball 820 out of the second through hole 910, thereby better preventing the steel ball 820 from falling out of the second through hole 910 during installation.

[0062] In this embodiment, the outer walls of the first sub-pipe 920, the second sub-pipe 930, and the third sub-pipe 940 are all provided with collars 950 that cooperate with the sleeve 850.

[0063] By using the collar 950 in this embodiment, when the sleeve 850 is fitted onto the first sub-pipe 920, the second sub-pipe 930, and the third sub-pipe 940, one end of the sleeve 850 rests against the collar 950, thereby preventing the sleeves 850 on the first sub-pipe 920, the second sub-pipe 930, and the third sub-pipe 940 from contacting each other during installation, causing compression and damage.

[0064] In this embodiment, the limiting rod 530 is provided with a sixth through hole 540 arranged along the axial direction of the limiting rod 530.

[0065] By setting the sixth through hole 540 in this embodiment, when the locking blocks 410 at both ends of the rotating assembly 220 pull the two rotating disks 620 to move, the two rotating disks 620 will squeeze the second flange 520 under the action of the pulling force. The second flange 520 squeezes the limiting rod 530, and the limiting rod 530 squeezes the inner wall of the first through hole 720. The worker inserts the steel bar into the upright 120, so that the steel bar passes through the sixth through hole 540 and the first through hole 720, thereby increasing the structural strength of the upright 120 and preventing the limiting rod 530 from being squeezed and deformed.

[0066] In this embodiment, the end of the card block 410 near the connecting rod 860 is provided with a limiting groove 1502 for the connecting rod 860 to be inserted.

[0067] The limiting groove 1502 in this embodiment allows the connecting rod 860 to be inserted into the limiting groove 1502 through an interference fit, which makes it easier for installers to connect the locking block 410 to the connecting rod 860.

[0068] In this embodiment, the ends of the two second conical blocks 1501 that are in contact with the first conical block 1101 are provided with inclined surfaces 1503.

[0069] By setting the inclined surface 1503 in this embodiment, when the first conical block 1101 pushes the second conical block 1501, the inclined surface 1503 at the lower end of the second conical block 1501 is attached to the outer wall of the first conical block 1101, thereby making it easier for the first conical block 1101 to push the second conical block 1501.

[0070] This embodiment relates to a prefabricated fence assembly method, including the following steps.

[0071] S1: Install the upright 120. First, the workers will bury the connecting column 210 around the foundation pit. Then, the rotating component 220 and the connecting column 210 will be placed in sequence along the height of the connecting column 210. After the height is determined, the upright 120 will be formed.

[0072] S2: Install the connecting frame 110. Based on the number of rotating components 220 in S1, select the corresponding number of four-way pipes 810. Connect the two ends of the first hollow rod 130 to the second sub-pipes 930 of the two four-way pipes 810 respectively. Then connect the two ends of the second hollow rod 140 to the first sub-pipes 920 and the third sub-pipes 940 of the two four-way pipes 810 respectively. Based on the number of four-way pipes 810, splice the corresponding number of first hollow rods 130 and second hollow rods 140 to form the connecting frame 110.

[0073] S3: Assemble the fence. After the uprights 120 and connecting frame 110 are installed, the workers lift the connecting frame 110 and then pull the locking block 410 at the fourth sub-pipe 960. The locking block 410 pulls the connecting rod 860, which in turn drives the baffle 840 to squeeze the spring 830. Then, the locking block 410 is inserted into the U-shaped groove 870. After the locking block 410 is inserted into the U-shaped groove 870, the spring 830 pushes the baffle 840, which in turn drives the connecting rod 860 to pull the locking block 410 to move. At this time, the locking block 410 pulls the stop block 660, which in turn pulls the rotating disc 620 to move, so that the third arc plate 640 on the second arc plate 630 is inserted into the annular groove 710.

[0074] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A prefabricated fence, characterized in that: It is installed around the perimeter of the foundation pit and can be spliced ​​according to different shapes of the foundation pit. It includes a fence body (100), which includes a support part and a connecting part. The support part includes multiple uprights (120) set along the perimeter of the foundation pit. The connecting part includes a connecting frame (110) set between adjacent uprights (120). The uprights (120) include multiple connecting columns (210) set in the vertical direction. A rotatable rotating component (220) is provided between adjacent connecting columns (210). The connecting frame (110) includes staggered first hollow rods (130) and second hollow rods (140), and a connecting mechanism for connecting the first hollow rods (130) and the second hollow rods (140). The rotating component (220) is provided with a connecting component that cooperates with the connecting mechanism to connect adjacent connecting columns (210) and connect the rotating component (220) and the connecting mechanism. The rotating assembly (220) includes a limiting rod (530) disposed between adjacent connecting posts (210). The outer wall of the middle end of the limiting rod (530) expands outward in the circumferential direction to form a first flange (510). The outer wall of the limiting rod (530) near the first flange (510) expands outward in the circumferential direction to form a second flange (520). The outer wall of the second flange (520) away from the first flange (510) expands outward in the circumferential direction to form a third flange (550). A rotating disk (620) is provided at each of the two second flanges (520). An elliptical through hole (610) is provided on the rotating disk (620) for the second flange (520) to pass through. The outer wall of the elliptical through hole (610) near the opening of the third flange (550) expands outward to form an installation hole for the third flange (550) to extend into. A step (690); a first through hole (720) is provided on the connecting column (210) along the axial direction of the connecting column (210) and into which the limiting rod (530) extends; the connecting mechanism includes a four-way pipe (810), which includes a first sub-through pipe (920), a second sub-through pipe (930), a third sub-through pipe (940) and a fourth sub-through pipe (960); a second through hole (910) communicating with the interior of the first sub-through pipe (920), the second sub-through pipe (930) and the third sub-through pipe (940) is provided on the outer wall of each of the first sub-through pipe (920), the second sub-through pipe (930) and the third sub-through pipe (940); a fourth through hole (1504) corresponding to the second through hole (910) is provided on the outer wall of the first hollow rod (130) and the second hollow rod (140); The inner diameter of the second sub-tube (930) gradually decreases from the inner diameter of the fourth sub-tube (960). The second sub-tube (930) and the fourth sub-tube (960) are provided with a first conical block (1101) that matches its inner diameter. The first conical block (1101) is provided with a fifth through hole (1201) along its axial direction. A connecting rod (860) passing through the fifth through hole (1201) is provided at the first conical block (1101). The end of the connecting rod (860) that extends out of the fourth sub-tube (960) is provided with an L-shaped locking block (410). The end of the connecting rod (860) that extends out of the second sub-tube (930) is provided with a baffle (840). A spring (830) is provided between the baffle (840) and the first conical block (1101) and sleeved on the connecting rod (860). A steel ball (820) is provided in the second through hole (910). Both the first sub-tube (920) and the third sub-tube (940) are equipped with a second conical block (1501) that cooperates with the first conical block (1101). The spring (830) pushes the first conical block (1101) to extend into the second sub-tube (930) and the fourth sub-tube (960). The first conical block (1101) pushes the steel ball (820) at the second sub-tube (930) to extend out of the second through hole (910) and pushes the two second conical blocks (1501) to move in opposite directions. The two second conical blocks (1501) respectively push the steel ball (820) at the first sub-tube (920) and the third sub-tube (940) to extend out of the second through hole (910). The steel ball (820) partially passes through the second through hole (910) and extends into the fourth through hole (1504). The inner diameter of the fourth through hole (1504) is smaller than the outer diameter of the steel ball (820). The connecting component includes a first arc-shaped plate (680) disposed on the outer wall of the rotating disk (620). A connecting block (650) is provided at one end of the first arc-shaped plate (680) away from the rotating disk (620). The end of the connecting block (650) away from the first arc-shaped plate (680) is recessed inward to form a groove. A stop block (660) is provided in the groove. The stop block (660) divides the groove into a U-shaped groove (870) with a U-shaped cross-section. A locking block (410) is inserted into the U-shaped groove (870) and fits against the stop block (660). A second arc plate (630) is provided on the outer wall of the rotating disk (620) away from the first arc plate (680), which faces the opposite direction to the first arc plate (680). A third arc plate (640) is provided on the outer wall of the second arc plate (630) away from the rotating disk (620), which is parallel to the rotating disk (620). Annular grooves (710) for inserting the third arc plate (640) are provided on the outer walls of both the upper and lower ends of the connecting column (210).

2. The prefabricated fence according to claim 1, characterized in that: Each of the first sub-pipe (920), the second sub-pipe (930), and the third sub-pipe (940) is provided with a sleeve (850) fitted onto the outer wall of the first sub-pipe (920), the second sub-pipe (930), and the third sub-pipe (940). The side wall of the sleeve (850) is provided with a third through hole (1001) corresponding to the second through hole (910). The diameter of the third through hole (1001) is smaller than the diameter of the second through hole (910).

3. A prefabricated fence according to claim 2, characterized in that: The outer walls of the first sub-pipe (920), the second sub-pipe (930) and the third sub-pipe (940) are all provided with collars (950) that cooperate with the sleeve (850).

4. A prefabricated fence according to claim 1, characterized in that: The limiting rod (530) is provided with a sixth through hole (540) arranged along the axial direction of the limiting rod (530).

5. A prefabricated fence according to claim 1, characterized in that: The end of the locking block (410) near the connecting rod (860) is provided with a limiting groove (1502) for the connecting rod (860) to be inserted.

6. A prefabricated fence according to claim 1, characterized in that: The two second conical blocks (1501) have an inclined surface (1503) at the end that contacts the first conical block (1101).

7. A method for assembling a prefabricated fence, implemented using a prefabricated fence as described in any one of claims 1-6, comprising the following steps: S1: Install the upright (120). First, the workers will bury the connecting column (210) around the foundation pit. Then, the rotating component (220) and the connecting column (210) will be placed in sequence along the height of the connecting column (210). After the height is determined, the upright (120) will be formed. S2: Install the connecting frame (110). Based on the number of rotating components (220) in S1, select the corresponding number of four-way pipes (810). Connect the two ends of the first hollow rod (130) to the second sub-pipes (930) of the two four-way pipes (810) respectively. Then connect the two ends of the second hollow rod (140) to the first sub-pipes (920) and the third sub-pipes (940) of the two four-way pipes (810) respectively. Based on the number of four-way pipes (810), splice the corresponding number of first hollow rods (130) and second hollow rods (140) to form the connecting frame (110). S3: Assemble the fence. After the uprights (120) and connecting frame (110) are installed, the workers lift the connecting frame (110), and then pull the locking block (410) at the fourth sub-pipe (960), so that the locking block (410) pulls the connecting rod (860), thereby driving the baffle (840) to squeeze the spring (830), and then the locking block (410) is inserted into the U-shaped groove (870). After the locking block (410) is inserted into the U-shaped groove (870), the spring (830) pushes the baffle (840), thereby driving the connecting rod (860) to pull the locking block (410) to move. At this time, the locking block (410) pulls the stop block (660), thereby pulling the rotating disc (620) to move, so that the third arc plate (640) on the second arc plate (630) is inserted into the annular groove (710).

Images