An isolation dock and an isolation device

Abstract

The utility model relates to the field of railway protection, concretely relates to an isolation base and isolation device. The base is the box body with upper opening and lower opening, the position of upper opening is equipped with roof, the roof can open and close, the position of lower opening is equipped with the pressing plate, one side of pressing plate is hinged with base, the top surface of roof is equipped with the sleeve. The utility model discloses the base is set as the box body with upper opening and lower opening, can form the foundation for fixing the vertical rod quickly. Make the construction site can restore the original state quickly, greatly save the construction time of isolation installation and dismounting, simplify the whole construction process, and then effectively save the whole construction period, improve the construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of railway protection, and in particular to an isolation base and isolation device. Background Technology

[0002] With the continuous improvement of national infrastructure, the increasing railway transport capacity, and the leapfrog development of the social economy, there is a need to upgrade and renovate the existing equipment and facilities of railway operating lines. Among these upgrades, temporarily closing operating lines and carrying out Category B / C construction on adjacent operating lines is a maintenance or construction method that minimizes the impact on the railway and can complete the repair or replacement of local lines or turnouts. Category B construction refers to projects that may endanger train operation safety due to accidents such as collapse or falling, while Category C construction refers to projects that may affect the stability of the railway subgrade and the safe operation of train equipment.

[0003] To ensure that personnel and machinery do not enter the railway line or exceed the permitted scope of construction work, especially to avoid collisions with personnel and equipment currently under construction, and to guarantee traffic safety, construction units are required, in accordance with current railway regulations, to install railway hard barriers at locations on both sides of the construction site that do not encroach on the traffic safety clearance of the main line or adjacent line. This serves as a warning and reminder to personnel and machinery not to intrude into the traffic clearance, and to fully isolate the construction area from the railway line.

[0004] The existing hard barriers are mostly simple devices consisting of welded poles and crossbars, fixed in the roadbed. Before installation, construction workers excavate metal pole pits at 3-meter intervals along the roadbed surface, with a burial depth of no less than 0.5 meters. During installation, workers bury the welded metal poles in the pits, backfill, and compact the soil. Once construction on adjacent operational lines is completed, or after the operational line closure is finished, the hard barriers must be restored to their original location or relocated. However, the current hard barriers are complex and cumbersome to install and remove, requiring significant manpower, which directly leads to extended construction periods. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the disassembly and assembly process of existing hard isolation facilities is both complex and cumbersome, leading to a prolonged construction period. Therefore, an isolation base and isolation device are provided.

[0006] In a first aspect, the present invention provides an isolation base, the base being a box having an upper opening and a lower opening, a top plate being provided at the position of the upper opening, the top plate being capable of being opened and closed; a pressure plate being provided at the position of the lower opening, one side of the pressure plate being hinged to the base, and a sleeve being provided on the top surface of the top plate.

[0007] This utility model provides an isolation base for placement on the ground, providing support for isolation panels or netting devices. The upper opening allows for the filling of soil or ballast into the base, increasing its counterweight. The pressure plate is held down by the soil or ballast, providing downward pressure and making the base more stable on the ground. The lower opening allows the soil or ballast to slide out smoothly when the base is lifted. Simultaneously, one side of the pressure plate is hinged to the base, allowing it to rotate downwards under the action of soil or ballast, thus reducing resistance. The top plate, when open, exposes the upper opening; when closed, it provides stable support for the sleeve. The sleeve is used to connect the uprights of the isolation panel or netting.

[0008] This invention provides an isolation base. By configuring the base as a box with upper and lower openings, a foundation for fixing the uprights can be quickly formed. Compared to traditional methods, it eliminates the need to excavate a pit in the ground, insert the uprights, and backfill, greatly simplifying the construction process. Traditional methods are not only cumbersome but also cause significant damage to the ground, making restoration difficult. The installation method of this base allows for rapid restoration of the construction site, greatly saving construction time for isolation installation and dismantling, simplifying the entire construction process, effectively shortening the overall construction cycle, and improving construction efficiency.

[0009] Preferably, the box is foldable and unfoldable. In this design, the box is foldable and unfoldable, which can effectively save space when folded during transportation and storage; and can be unfolded to form a complete box structure when needed.

[0010] To achieve the folding function of the base, it can be designed as a box-shaped structure composed of four or more flat panels, with openings at both the top and bottom. Adjacent flat panels are connected by hinges, and the planes of any two adjacent flat panels form an intersecting line. These intersecting lines are parallel to each other, ensuring that the enclosed box-shaped structure is geometrically variable, thus achieving the folding effect.

[0011] Preferably, the base includes a first side plate, a second side plate, and two third side plates. The first side plate and the second side plate are arranged opposite to each other, and the two third side plates are arranged opposite to each other and located between the first side plate and the second side plate. Both third side plates are hinged to the first side plate and the second side plate via a first pin. The first side plate, the second side plate, and the two third side plates enclose the housing. In this design, the first side plate, the second side plate, and the two third side plates are used to enclose and form the base. The two third side plates are hinged to the first side plate and the second side plate via the first pin, enabling the base to be foldable and unfoldable. In this design, both the upper opening and the lower opening are rectangular with the same dimensions.

[0012] Preferably, the box body unfolds into a frustum shape, and each third side panel includes two sub-panels, which are hinged together by a second pin. The two sub-panels can be folded along the width direction of the third side panel. In this design, the box body unfolds into a frustum shape, making the size of the upper opening smaller than the lower opening. The frustum structure has a large bottom area and a small top area. From a mechanical point of view, the larger bottom area can provide a larger supporting foundation, thereby enhancing the stability of the base. However, the frustum structure itself has spatial self-stability, which means that the base of the frustum structure cannot be directly folded through rigid deformation in its natural state. To solve this problem, this design makes each third side panel into two sub-panels that can be folded along the width direction of the third side panel, and uses the second pin to hinge the two sub-panels together. With this design, when folding is required, the two sub-panels can rotate relative to each other around the second pin, thus making the entire base foldable.

[0013] To ensure the top plate has the function of opening and closing, only one side of the top plate is hinged to the base. All other sides of the top plate can be detachably connected to the base. The detachable connection methods include, but are not limited to, the following: connection using snap-fit, connection using clamps, or connection using binding ropes through holes drilled at corresponding positions on the top plate and the base.

[0014] Preferably, the top plate is hinged to the top edge of the first side plate, the top edge of the top plate has a first through hole, the top edge of the second side plate has a second through hole, and the top edge of the third side plate has a third through hole. In this design, the second through hole and the corresponding first through hole are used to pass through a binding rope, realizing a detachable connection between the top plate and the second side plate; the third through hole and the corresponding first through hole are used to pass through a binding rope, realizing a detachable connection between the top plate and the third side plate. Compared with the connection method using buckles and clamps, this connection method is simpler. This design only requires opening holes in the first side plate, the second side plate, and the third side plate, without the need for additional buckle components or various components that cooperate between clamps, greatly simplifying the manufacturing process and effectively reducing manufacturing and maintenance costs.

[0015] Preferably, the first side plate is provided with a first lifting ring, and the second side plate is provided with a second lifting ring. In this design, the first and second lifting rings provide lifting points for the base, facilitating the lifting of the base by hoisting equipment for quick disassembly and relocation.

[0016] Preferably, the area of ​​the pressure plate is 0.1 to 0.2 times the size of the lower opening. Within this area range, the pressure plate can ensure that it is held down by the soil or ballast filled in the base, avoiding the inability to perform its fixing function due to an insufficient area. At the same time, when the base is lifted upwards, it will not generate significant resistance to the base due to an excessively large area, thus affecting the smoothness of the lifting operation.

[0017] Preferably, a rib is provided between the top plate and the sleeve. In this design, the rib is used to strengthen the connection between the sleeve and the top plate.

[0018] In a second aspect, the present invention provides an isolation device comprising several isolation bases as described in the first aspect, wherein the top of the base is provided with a vertical pole, the bottom of the vertical pole is detachably connected to a sleeve of the base, and an isolation net is detachably connected between two adjacent vertical poles.

[0019] This utility model provides an isolation device, in which a sleeve is used to fix the bottom of the upright. The bottom of the upright is detachably connected to the sleeve of the base, allowing the upright to be separated from the sleeve for easy assembly and disassembly of the device. The upright is used to connect and fix the isolation net. The isolation net serves to form an isolation fence. Both ends of the isolation net can be detachably connected to two adjacent uprights, ensuring that the isolation net can be quickly installed and disassembled. This device, by setting the base as a box with an upper and lower opening, can quickly form a foundation for fixing the upright. Compared with the traditional method, there is no need to excavate a foundation pit in the ground, insert the upright, and backfill the soil, greatly simplifying the construction process. The traditional method is not only cumbersome to operate, but also causes greater damage to the ground, making restoration difficult. The installation method of the base of this device allows the construction site to be quickly restored to its original state, greatly saving the construction time for isolation installation and disassembly, simplifying the entire construction process, and thus effectively saving the entire construction cycle and improving construction efficiency.

[0020] The isolation net can be foldable or non-foldable.

[0021] The isolation net and the upright can be detachably connected by binding or by a loop connection.

[0022] Preferably, the isolation net includes two grids connected by a third pin. The two grids are foldable or unfoldable, and each end of the isolation net has a collar that can be fitted onto the upright. In this design, the third pin enables a hinge between the two grids, allowing for easy folding and unfolding. When the isolation net needs to be transported or stored, folding can shorten its length, saving space and improving the convenience of transport and storage. The collars provide a detachable connection between the isolation net and the upright. Compared to binding connections, the collar connection method makes the connection between the isolation net and the upright more secure, effectively preventing loosening or detachment during use.

[0023] The collar can be a complete ring structure that can be directly fitted onto the top of the pole; or it can be a ring structure with a notch, through which the pole can be inserted into the collar.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides an isolation base. By setting the base as a box with an upper opening and a lower opening, a foundation for fixing the uprights can be quickly formed. Compared with the traditional method, there is no need to excavate a foundation pit in the ground, insert the uprights, and backfill the soil, which greatly simplifies the construction process. The traditional method is not only cumbersome to operate, but also causes greater damage to the ground and is difficult to restore to its original state. The installation method of this base allows the construction site to be quickly restored to its original state, which greatly saves the construction time for isolation installation and dismantling, simplifies the entire construction process, and thus effectively saves the entire construction cycle and improves construction efficiency. 2. This utility model provides an isolation device. By configuring the base as a box with upper and lower openings, this device can quickly form a foundation for fixing the uprights. Compared to traditional methods, it eliminates the need to excavate a pit, insert the uprights, and backfill, greatly simplifying the construction process. Traditional methods are not only cumbersome but also cause significant damage to the ground, making restoration difficult. The base installation method of this device allows for rapid restoration of the construction site, greatly saving construction time for isolation installation and dismantling, simplifying the entire construction process, effectively shortening the overall construction cycle, and improving construction efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an isolation device.

[0026] Figure 2 This is a front view of an isolation device.

[0027] Figure 3 This is a front view of the isolation net.

[0028] Figure 4 This is a schematic diagram of the first structure of an isolation base.

[0029] Figure 5 This is a schematic diagram of a second structure for an isolation base.

[0030] Figure 6 This is a front view of an isolation base.

[0031] Figure 7 This is a side view of an isolation base.

[0032] Figure 8 This is a structural diagram of an isolation base with its top plate in the open state.

[0033] Figure 9 This is a rear view of an isolation base with its top plate open.

[0034] Figure 10 for Figure 9 Cross-sectional view of section AA.

[0035] Figure 11 This is a schematic diagram of an isolation base after it has been folded.

[0036] Marked in the image: 1-Base, 11-First side plate, 111-First lifting ring, 112-Fourth pin, 12-Second side plate, 121-Second lifting ring, 122-Second through hole, 13-Third side plate, 131-Subplate, 132-Second pin, 133-Third through hole, 134-First pin 14-Top plate, 141-Sleeve, 142-Rib plate, 143-First through hole, 15-Pressure plate, 151-Fifth pin 16- Open at the top, 17- Lower opening, 2-Upright pole, 3-Isolation netting, 31-Grate, 32-Third pin, 33-Collar ring. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0038] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1 like Figures 4 to 11As shown, an isolation base is provided. The base 1 is a box with an upper opening 16 and a lower opening 17. A top plate 14 is provided at the position of the upper opening 16. The top plate 14 can be opened and closed. A pressure plate 15 is provided at the position of the lower opening 17. One side of the pressure plate 15 is hinged to the base 1. A sleeve 141 is provided on the top surface of the top plate 14.

[0044] Specifically, sleeve 141 is positioned at the center of the top surface of top plate 14, and the axis of sleeve 141 is perpendicular to the plane of top plate 14. Pressure plate 15 is connected to base 1 via fifth pin 151.

[0045] In an optional implementation, the housing is foldable and unfoldable. Specifically, the base 1 is folded as follows: Figure 11 As shown, the folding design enables the base 1 to be fully extended and retracted, making it easy to carry, quick to install, and of reliable quality and safety.

[0046] In an optional embodiment, the base 1 may include a first side plate 11, a second side plate 12, and two third side plates 13. The first side plate 11 and the second side plate 12 are arranged opposite to each other, and the two third side plates 13 are arranged opposite to each other and located between the first side plate 11 and the second side plate 12. Both third side plates 13 are hinged to the first side plate 11 and the second side plate 12 via a first pin 134. The first side plate 11, the second side plate 12, and the two third side plates 13 form the housing. Specifically, the first side plate 11, the second side plate 12, and the two third side plates 13 are all made of steel plates with a thickness of 5mm-8mm.

[0047] In an optional embodiment, the box can be unfolded into a frustum shape, and each third side plate 13 can include two sub-plates 131. The two sub-plates 131 are hinged together by a second pin 132, and the two sub-plates 131 can be folded along the width direction of the third side plate 13.

[0048] Specifically, the first side plate 11 and the second side plate 12 are isosceles trapezoidal plates of the same shape and size. The third side plate 13 is also an isosceles trapezoidal plate. The width of the third side plate 13 is less than or equal to the width of the first side plate 11, and the height of the third side plate 13 is the same as the height of the first side plate 11. The third side plate 13 is divided into two sub-plates 131 along the line connecting the midpoints of the upper and lower bases. Figure 6 and Figure 7 As shown, when viewed from the front and side, base 1 is an isosceles trapezoid, which can solve the stability problem when installing base 1.

[0049] In an optional embodiment, the top plate 14 may be hinged to the top edge of the first side plate 11, the edge of the top plate 14 may be provided with a first through hole 143, the top edge of the second side plate 12 may be provided with a second through hole 122, and the top edge of the third side plate 13 may be provided with a third through hole 133.

[0050] Specifically, the first through hole 143, the second through hole 122, and the third through hole 133 are all 10mm-15mm away from the edge of the plate, and the shapes of the first through hole 143, the second through hole 122, and the third through hole 133 can be circular or rectangular. The top plate 14 can be hinged to the top edge of the first side plate 11 via the fourth pin 112.

[0051] In an optional embodiment, a first lifting ring 111 may be provided on the first side plate 11, and a second lifting ring 121 may be provided on the second side plate 12. Specifically, both the first lifting ring 111 and the second lifting ring 121 may be made of steel bars or steel wire ropes.

[0052] In an optional embodiment, the area of ​​the pressure plate 15 can be 0.1 to 0.2 times the area of ​​the lower opening 17. Specifically, the two pressure plates 15 are respectively connected to the bottom edges of the first side plate 11 and the second side plate 12 via a fifth pin 151. The width of the pressure plate 15 can be 0.15 to 0.25 times the width of the lower opening 17. The length of the pressure plate 15 can be 0.6 to 0.8 times the length of the lower opening 17.

[0053] In an optional embodiment, a rib 142 may be provided between the top plate 14 and the sleeve 141. Specifically, the rib 142 may be a triangular steel plate with a thickness of 5mm-10mm.

[0054] Example 2 like Figures 1 to 3 As shown, an isolation device includes several isolation bases as described in Embodiment 1. The top of the base 1 is provided with a vertical pole 2, the bottom of the vertical pole 2 is detachably connected to the sleeve 141 of the base 1, and an isolation net 3 is detachably connected between two adjacent vertical poles 2.

[0055] Specifically, the bottom of the upright 2 can be inserted into the sleeve 141, or it can be connected to the inner wall of the sleeve 141 via a threaded connection. The sleeve 141 can be a steel pipe. This solution simplifies the installation and disassembly process of the upright 2.

[0056] In an optional embodiment, the isolation net 3 may include two grids 31 connected by a third pin 32. The two grids 31 can be folded or unfolded. The isolation net 3 has collars 33 at both ends, which can be fitted onto the uprights 2. Specifically, the grid 31 includes a metal frame and a wire mesh.

[0057] In an optional embodiment, a warning light can be installed at the top of the pole 2, and reflective strips can be installed on the isolation net 3. In this solution, the warning light actively emits light, attracting the attention of personnel in environments with insufficient light or at night; the reflective strips, by reflecting external light, produce a conspicuous reflective effect when illuminated by a light source. Both serve to alert personnel and prevent collisions with the device.

[0058] In an optional embodiment, the collar 33 may have a notch, and end plates are respectively provided on both sides of the notch, with the two end plates connected by bolts. Specifically, the end plates have holes for the bolts to pass through.

[0059] In this design, the notch allows the upright 2 to smoothly engage with the collar 33. Compared to a complete ring structure, the collar 33 in this design allows the isolation net 3 and the upright 2 to be connected at the same height, eliminating the need to raise the isolation net 3 above the top of the upright 2, thus simplifying the connection process. The engagement of the end plate and bolts securely fastens the collar 33 to the upright 2, ensuring a reliable connection between the collar 33 and the upright 2, preventing loosening or displacement, and thus guaranteeing the structural stability and operational safety of the entire device.

[0060] In an optional embodiment, the inner wall of the collar 33 may be provided with an anti-wear pad. Specifically, the anti-wear pad is a 2mm-5mm thick rubber sheet, which is attached to the inner wall of the collar 33 by adhesive bonding. In this solution, the anti-wear pad is used to reduce scratching and wear between the collar 33 and the upright 2, thereby improving the service life of both the collar 33 and the upright 2.

[0061] The first pin 134, the second pin 132, the third pin 32, the fourth pin 112 and the fifth pin 151 mentioned above can all be replaced with metal hinges or metal flaps.

[0062] Example 3 This embodiment describes the use of an isolation device as described in Embodiment 2, including the following steps.

[0063] Step 1: Unfold the base 1 and place it on the roadbed surface outside the safety clearance, and open the top plate 14.

[0064] Step 2: Fill the base 1 with soil or ballast stones and other counterweights until it is full, and compact the pressure plate 15 at the bottom of the base 1 to ensure the stability of the entire base 1.

[0065] Step 3: Close the top plate 14 to cover the upper opening 16 of the base 1. Use a binding rope to pass through the second through hole 122 and the corresponding first through hole 143 to connect the top plate 14 to the second side plate 12. Use a binding rope to pass through the third through hole 133 and the corresponding first through hole 143 to connect the top plate 14 to the third side plate 13.

[0066] Step 4: Insert the upright 2 into the sleeve 141 on the top plate 14, connect the isolation net 3 to the upright 2, and complete the installation of the entire rigid isolation device.

[0067] Step 5: After use, disassemble the isolation net 3 and the upright pole 2 in sequence.

[0068] Step Six: Lift the base 1 upwards using the first lifting ring 111 and the second lifting ring 121 to release the counterweight inside the base 1, fold the base 1, and relocate it to another construction area or remove it from the construction site.

[0069] The isolation base described in this utility model achieves maximum expansion and contraction of the base 1 through a multi-part folding design. This solves the problem of cumbersome operations involved in installing, dismantling, restoring, and transferring hard isolation facilities during closure construction near operating lines (Category BC). It effectively isolates the construction area from the traffic line, meeting the construction company's requirements for ensuring construction safety and reputation. Furthermore, it reduces unnecessary waste such as labor costs.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An isolation base, characterized in that, The base (1) is a box with an upper opening (16) and a lower opening (17). A top plate (14) is provided at the position of the upper opening (16), and the top plate (14) can be opened and closed. A pressure plate (15) is provided at the position of the lower opening (17), one side of the pressure plate (15) is hinged to the base (1), and a sleeve (141) is provided on the top surface of the top plate (14).

2. The isolation base according to claim 1, characterized in that, The box can be folded and unfolded.

3. An isolation base according to claim 2, characterized in that, The base (1) includes a first side plate (11), a second side plate (12) and two third side plates (13). The first side plate (11) and the second side plate (12) are arranged opposite to each other, and the two third side plates (13) are arranged opposite to each other and located between the first side plate (11) and the second side plate (12). The two third side plates (13) are hinged to the first side plate (11) and the second side plate (12) by a first pin (134). The first side plate (11), the second side plate (12) and the two third side plates (13) form the box body.

4. An isolation base according to claim 3, characterized in that, The box unfolds into a frustum shape. Each of the third side panels (13) includes two sub-panels (131). The two sub-panels (131) are hinged together by a second pin (132). The two sub-panels (131) can be folded along the width direction of the third side panel (13).

5. An isolation base according to claim 3, characterized in that, The top plate (14) is hinged to the top edge of the first side plate (11). The edge of the top plate (14) is provided with a first through hole (143), the top edge of the second side plate (12) is provided with a second through hole (122), and the top edge of the third side plate (13) is provided with a third through hole (133).

6. An isolation base according to claim 3, characterized in that, The first side plate (11) is provided with a first lifting ring (111), and the second side plate (12) is provided with a second lifting ring (121).

7. An isolation base according to any one of claims 1-6, characterized in that, The area of ​​the pressure plate (15) is 0.1 to 0.2 times that of the lower opening (17).

8. An isolation base according to claim 7, characterized in that, A rib (142) is provided between the top plate (14) and the sleeve (141).

9. An isolation device, characterized in that, The base includes several isolation bases as described in any one of claims 1-8, wherein the top of the base (1) is provided with a pole (2), the bottom of the pole (2) is detachably connected to the sleeve (141) of the base (1), and an isolation net (3) is detachably connected between two adjacent poles (2).

10. An isolation device according to claim 9, characterized in that, The isolation net (3) includes two grids (31), which are connected by a third pin (32). The two grids (31) can be folded or unfolded. The isolation net (3) has collars (33) at both ends, which can be fitted onto the upright (2).

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