Collapsible portal frame

Abstract

The application discloses a detachable door type overhead frame and relates to the technical field of overhead frames. The overhead frame comprises support sheet bodies and a top sheet body. The support sheet bodies are provided in two groups. The surface of the top sheet body is provided with connecting sheets. The surface of the support sheet bodies is provided with locking screws. The support sheet bodies and the top sheet body are spliced together. The overhead frame further comprises fixing devices which are respectively arranged on the arc surfaces of the support sheet bodies and are used for supporting and combining the support sheet bodies. The fixing devices comprise annular rings which are fixedly connected to the arc surfaces of the support sheet bodies and limiting plates which are used for supporting and combining the support sheet bodies. The overhead frame further comprises adjusting devices which are respectively arranged on the arc surfaces of the support sheet bodies and are used for adjusting the support sheet bodies. The fixing devices improve the splicing effect of the overhead frame, reduce the problem that a single person cannot conveniently splice and assemble the overhead frame, facilitate the placement of the support sheet bodies and improve the working efficiency of the overhead frame as much as possible.

Description

Technical Field

[0001] This invention relates to the field of overhead frame technology, specifically to a detachable portal overhead frame. Background Technology

[0002] Under current shipbuilding conditions, a large number of conveyor belts are indispensable in the C / B / P / D stages of ship construction. Currently, dedicated overhead conveyor belts are used, which greatly controls the site environment. However, due to the large area occupied by the overhead conveyor belts, their transportation, hoisting, storage, recycling, and maintenance are quite difficult. In particular, in some cabins, the process holes in the door frames are too small in the later stages of use, so they can only be removed by destructive means. In the engine room, they can only be lifted out through the hoisting port, which is labor-intensive, time-consuming, and poses safety hazards.

[0003] The existing overhead frame is composed of support panels and a top panel. However, due to the large size of the support panels and the fact that there are two sets of support panels, multiple people are needed to support and fix the support panels when assembling the overhead frame. Then, the top panel is inserted into the two support panels. This operation is quite laborious. When there are not enough people, it is difficult for a single person to assemble the overhead frame. Furthermore, when the support panels are disassembled and placed, it is not easy to combine them, resulting in the support panels occupying a lot of space, which reduces the working efficiency of the overhead frame.

[0004] Therefore, we propose a detachable gantry-type overhead frame. Summary of the Invention

[0005] The purpose of this invention is to provide a detachable portal frame to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detachable gantry-type overhead frame, comprising a support plate and a top plate, wherein the support plate is provided in two sets, a connecting piece is installed on the surface of the top plate, and a locking screw is installed on the surface of the support plate. The support plate and the top plate are assembled together, and the frame further includes:

[0007] Fixing devices are respectively provided on the arc surface of the support sheet for supporting and assembling the support sheet. The fixing devices include a ring fixedly connected to the arc surface of the support sheet and a limiting plate for supporting and assembling the support sheet.

[0008] An adjustment device is respectively provided on the arc surface of the support plate for adjusting the support plate. The adjustment device includes a support rod slidably connected to the inner wall of the support plate and a screw for adjusting the support plate.

[0009] Anti-slip devices are respectively installed on the surface of the support rod to prevent the support plate from slipping when it comes into contact with the ground. The anti-slip devices include anti-slip pads fixedly connected to the surface of the support rod for preventing the support plate from slipping when it comes into contact with the ground.

[0010] The aforementioned components achieve the following effects: By incorporating a fixing device, the splicing effect of the overhead frame is improved, reducing the difficulty for a single person to assemble and splice the frame, facilitating the placement of support panels, and maximizing the working efficiency of the overhead frame. By incorporating an adjustment device, the adjustability of the overhead frame is improved, reducing the difficulty of placing the frame on uneven ground and maximizing its practicality. By incorporating an anti-slip device, the stability of the overhead frame during operation is improved, reducing the difficulty of replacing worn bottom surfaces after prolonged use and maximizing the overall performance of the overhead frame.

[0011] Preferably, the fixing device further includes a support ring, which is rotatably connected to a circular ring, and the limiting plate is rotatably connected to the support ring. A square plate is fixedly connected to one end of the limiting plate, and a suction cup is fixedly connected to the surface of the square plate. The circular rings on the arc surfaces of the two sets of support plates are distributed in a cross pattern.

[0012] The aforementioned components achieve the following effect: First, the limiting plates on one side of the support plate are separated. Then, the support ring inside the circular ring is rotated, causing the limiting plate to rotate to one side of the support plate. One side of the support plate is then placed flat on the ground. The support plate moves the square plate on the limiting plate, causing the suction cup to contact and adhere to the ground, thus facilitating a stable connection between the limiting plate and the ground, and consequently, supporting the support plate. Following this method, the two sets of support plates are placed on the ground, and the top plate is inserted into the two support plates. The support plates and top plates are then fixed using connecting plates and locking screws. This facilitates single-person assembly of the overhead frame, reducing manpower waste.

[0013] Preferably, a fixing strip is fixedly connected to the arc surface of the support ring, and two limiting rods are slidably connected to the surface of the fixing strip. The arc surface of the ring is provided with a plurality of circular grooves, and the limiting rods are engaged with the circular grooves on the arc surface of the ring.

[0014] The aforementioned components achieve the following effect: when the support ring drives the limiting plate to rotate to one side of the support plate, it pushes the limiting rod inside the fixing strip into the ring, thereby improving the stability of the support ring.

[0015] Preferably, a fixing plate is fixedly connected to the surface of the limiting plate, and an insert plate is slidably connected to the surface of the fixing plate. The arc surface of the ring has a plurality of slots, and the insert plate engages with the slots on the arc surface of the ring.

[0016] The effect achieved by the above components is that when the limiting plate contacts the ground, it pushes the insert plate inside the fixed plate into the ring, thereby improving the stability of the limiting plate and reducing the problem of the limiting plate shaking when it is hit by external force.

[0017] Preferably, a plurality of sliding rods are slidably connected to the surface of the limiting plate, a clamping plate is fixedly connected to one end of each sliding rod, a plurality of anti-slip strips are fixedly connected to one end of each clamping plate, and a first spring is sleeved on the arc surface of each sliding rod, with the two ends of the first spring being fixedly connected to the limiting plate and the sliding rod respectively.

[0018] The aforementioned components achieve the following effects: When placing the overhead frame after disassembly, the support ring can be rotated to align the limiting plates within the support ring. At this point, the two support pieces can be moved closer together, and the two limiting plates within the support ring can be rotated to abut against each other, thereby wrapping and fixing the support pieces. The suction cups abut against each other to perform initial fixing of the support pieces. Then, the insert plate within the fixing plate is pushed into the ring, thereby improving the connection and combination efficiency between the support pieces. At this point, the slide rod, under the action of the first spring tension, drives the clamping plate to squeeze the support pieces, thereby improving the fixing effect of the limiting plates on the support pieces. The anti-slip strip further reduces the slippage of the support pieces.

[0019] Preferably, the adjusting device further includes a groove formed on the arc surface of the support plate, a sliding plate fixedly connected to the arc surface of the support rod, the sliding plate and the groove on the arc surface of the support plate being slidably connected, two fixing blocks fixedly connected to the arc surface of the support plate, the screw and the fixing blocks being rotatably connected, a throttle handle fixedly connected to one end of the screw, and the sliding plate and the screw being threadedly connected.

[0020] The aforementioned components achieve the following effect: when the handle is turned, the screw inside the fixed block rotates, and the screw moves the support rod on the slide along the groove, thus facilitating the adjustment of the support rod. This makes it easier to place the overhead frame horizontally on ground of different heights, further improving the usability of the overhead frame.

[0021] Preferably, the surface of the throttle is slidably connected to a plug rod, and the surface of the fixing block is provided with a plurality of insertion holes, wherein the plug rod and the insertion holes on the surface of the fixing block are engaged.

[0022] The effect achieved by the above components is that the push rod is inserted into the fixed block, thereby improving the stability of the throttle and reducing the problem of the throttle loosening due to external force impact, which would cause the overhead frame to shake.

[0023] Preferably, the anti-slip device further includes barbs, which are fixedly connected to the spikes, and the anti-slip pad is placed on the lower surface of the support rod, and the anti-slip pad is a rubber pad.

[0024] The effect achieved by the above components is as follows: when the anti-slip pad is placed at the bottom of the support rod, the pointed protrusions can initially fix the anti-slip pad, and the barbs further improve the stability of the anti-slip pad.

[0025] Preferably, the arc surface of the support rod is fixedly connected to three support plates, the surface of the support plates is slidably connected to push plates, and one end of the push plates is fixedly connected to a spike.

[0026] The aforementioned components achieve the following effect: by pushing the push plate inside the support plate, the push plate causes the spikes to insert into the anti-slip pad, thereby improving the stability of the anti-slip pad and facilitating the regular replacement of the anti-slip pad.

[0027] Preferably, a second spring is fixedly connected to the surface of the push plate, and one end of the second spring is fixedly connected to the support plate.

[0028] The above components achieve the following effect: the push plate, under the action of the second spring, will drive the spikes to be stably inserted into the anti-slip pad, thereby improving the stability of the push plate. At this time, the anti-slip pad can effectively improve the stability of the support rod, reduce the problem of shaking when the overhead frame is working, and at the same time, it can protect the support rod and reduce the wear and tear of the support rod after long-term operation.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. By setting up a fixing device, the present invention improves the splicing effect of the overhead frame, reduces the problem that it is inconvenient for a single person to splice and assemble the overhead frame, facilitates the placement of the support plate, and maximizes the working efficiency of the overhead frame.

[0031] 2. By incorporating an adjustment device, this invention improves the adjustment effect of the overhead frame, reduces the difficulty of placing the overhead frame on uneven ground, and maximizes the practicality of the overhead frame.

[0032] 3. By incorporating an anti-slip device, this invention improves the stability of the overhead frame during operation, reduces the problem of inconvenient replacement due to bottom wear after prolonged operation, and maximizes the effectiveness of the overhead frame. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the present invention from another angle;

[0035] Figure 3 This is a partial structural diagram of the present invention;

[0036] Figure 4This is a schematic diagram of the structure of the top sheet in this invention;

[0037] Figure 5 In this invention Figure 1 A partial structural diagram;

[0038] Figure 6 This is a schematic diagram of the fixing device in this invention;

[0039] Figure 7 In this invention Figure 6 Enlarged view of point A;

[0040] Figure 8 In this invention Figure 3 A partial structural diagram;

[0041] Figure 9 In this invention Figure 8 Enlarged view of point B;

[0042] Figure 10 In this invention Figure 8 Enlarged view of point C.

[0043] In the diagram: 1. Support plate; 2. Top plate; 3. Connecting plate; 4. Fixing device; 401. Ring; 402. Support ring; 403. Limiting plate; 404. Square plate; 405. Suction cup; 406. Fixing plate; 407. Insert plate; 408. Slide rod; 409. Clamping plate; 410. Anti-slip strip; 411. First spring; 412. Fixing strip; 413. Limiting rod; 5. Adjusting device; 51. Support rod; 52. Slide plate; 53. Slide groove; 54. Fixing block; 55. Screw; 56. Turn handle; 57. Insert rod; 6. Anti-slip device; 61. Sharp protrusion; 62. Barb; 63. Anti-slip pad; 64. Support plate; 65. Push plate; 66. Sharp barb; 67. Second spring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figure 1-10This invention provides a technical solution: a detachable gantry frame, comprising a support plate 1 and a top plate 2. The support plate 1 has two sets. A connecting piece 3 is mounted on the surface of the top plate 2. Locking screws are mounted on the surface of the support plate 1. The support plate 1 and the top plate 2 are assembled together. The invention also includes: a fixing device 4, respectively disposed on the arc surface of the support plate 1, for supporting and assembling the support plate 1. The fixing device 4 includes a ring 401 fixedly connected to the arc surface of the support plate 1 for supporting the support plate 1. The support and the combination of the limiting plate 403; the adjustment device 5, which is respectively set on the arc surface of the support plate 1 for adjusting the support plate 1, the adjustment device 5 includes a support rod 51 slidably connected to the inner wall of the support plate 1 and a screw 55 for adjusting the support plate 1; and the anti-slip device 6, which is respectively set on the surface of the support rod 51 for preventing the support plate 1 from contacting the ground, the anti-slip device 6 includes an anti-slip pad 63 fixedly connected to the surface of the support rod 51 for preventing the support plate 1 from contacting the ground.

[0046] By incorporating the fixing device 4, the splicing effect of the overhead frame is improved, reducing the difficulty for a single person to assemble and splice the frame, facilitating the placement of the support plate 1, and maximizing the working efficiency of the overhead frame. By incorporating the adjustment device 5, the adjustability of the overhead frame is improved, reducing the difficulty of placing the frame on uneven ground and maximizing its practicality. By incorporating the anti-slip device 6, the stability of the overhead frame during operation is improved, reducing the difficulty of replacing worn bottom surfaces after prolonged use and maximizing the overall performance of the overhead frame.

[0047] The following section will explain the specific design and function of its fixing device 4, adjusting device 5, and anti-slip device 6.

[0048] like Figures 1-7As shown, the fixing device 4 also includes a support ring 402, which is rotatably connected to the circular ring 401. The limiting plate 403 is rotatably connected to the support ring 402. One end of the limiting plate 403 is fixedly connected to a square plate 404. A suction cup 405 is fixedly connected to the surface of the square plate 404. The circular rings 401 on the arc surfaces of the two sets of support plates 1 are distributed in a cross shape. First, separate the limiting plates 403 on one side of the support plate 1. Then, rotate the support ring 402 inside the ring 401. The support ring 402 drives the limiting plate 403 to rotate to one side of the support plate 1. Place one side of the support plate 1 flat on the ground. The support plate 1 will drive the square plate 404 on the limiting plate 403 to move. The square plate 404 drives the suction cup 405 to contact and adhere to the ground, thus facilitating a stable connection between the limiting plate 403 and the ground, and thus facilitating the support of the support plate 1. Then, place the two sets of support plates 1 on the ground in the above manner, insert the top plate 2 into the two support plates 1, and fix the support plate 1 and the top plate 2 with the help of the connecting plate 3 and the locking screw. This makes it convenient for a single person to assemble the overhead frame, reducing the waste of manpower. A fixing strip 412 is fixedly connected to the arc surface of the support ring 402. Two limiting rods 413 are slidably connected to the surface of the fixing strip 412. Several circular grooves are formed on the arc surface of the ring 401, and the limiting rods 413 engage with the circular grooves on the arc surface of the ring 401. When the support ring 402 drives the limiting plate 403 to rotate to one side of the support plate 1, it pushes the limiting rods 413 in the fixing strip 412 into the ring 401, thereby improving the stability of the support ring 402. A fixing plate 406 is fixedly connected to the surface of the limiting plate 403, and an insert plate 407 is slidably connected to the surface of the fixing plate 406. Several slots are formed on the arc surface of the ring 401, and the insert plate 407 engages with the slots on the arc surface of the ring 401. When the limiting plate 403 contacts the ground, it pushes the insert plate 407 inside the fixing plate 406 into the ring 401, thereby improving the stability of the limiting plate 403 and reducing the problem of the limiting plate 403 shaking when subjected to external force. Several sliding rods 408 are slidably connected to the surface of the limiting plate 403. One end of the sliding rod 408 is fixedly connected to a clamping plate 409. One end of the clamping plate 409 is fixedly connected to several anti-slip strips 410. A first spring 411 is sleeved on the arc surface of the sliding rod 408. The two ends of the first spring 411 are fixedly connected to the limiting plate 403 and the sliding rod 408, respectively.When placing the overhead frame after disassembly, the support ring 402 can be rotated to align the limiting plates 403 inside the support ring 402. At this time, the two support pieces 1 are moved closer to each other, and the two limiting plates 403 inside the support ring 402 are rotated to abut against each other, thereby wrapping and fixing the support pieces 1. The suction cups 405 abut against each other to perform initial fixing work on the support pieces 1. At this time, the insert plate 407 inside the fixing plate 406 is pushed into the ring 401, thereby improving the connection and combination efficiency between the support pieces 1. At this time, the slide rod 408 drives the clamping plate 409 to squeeze the support pieces 1 under the action of the first spring 411, thereby improving the fixing effect of the limiting plate 403 on the support pieces 1. The anti-slip strip 410 further reduces the slippage of the support pieces 1.

[0049] like Figure 3 and Figure 8 as well as Figure 9 As shown, the adjustment device 5 also includes a groove 53 formed on the arc surface of the support plate 1. A sliding plate 52 is fixedly connected to the arc surface of the support rod 51. The sliding plate 52 and the groove 53 on the arc surface of the support plate 1 are slidably connected. Two fixing blocks 54 are fixedly connected to the arc surface of the support plate 1. A screw 55 is rotatably connected to the fixing blocks 54. One end of the screw 55 is fixedly connected to a handle 56. The sliding plate 52 and the screw 55 are threadedly connected. Rotating the handle 56 causes the screw 55 inside the fixing block 54 to rotate. The screw 55 causes the support rod 51 on the sliding plate 52 to move along the groove 53, thereby facilitating the adjustment of the support rod 51. This facilitates the horizontal placement of the overhead frame on ground of different heights, further improving the usability of the overhead frame. A plug 57 is slidably connected to the surface of the handle 56. Several insertion holes are formed on the surface of the fixing block 54. The plug 57 engages with the insertion holes on the surface of the fixing block 54. At this time, the push rod 57 is inserted into the fixing block 54, thereby improving the stability of the throttle 56 and reducing the problem of the throttle 56 becoming loose due to external impact, which would cause the overhead frame to shake.

[0050] like Figure 8 and Figure 10As shown, the anti-slip device 6 also includes barbs 62, which are fixedly connected to protrusions 61. An anti-slip pad 63, made of rubber, is placed on the lower surface of the support rod 51. When the anti-slip pad 63 is placed at the bottom of the support rod 51, the protrusions 61 provide initial fixation, and the barbs 62 further enhance its stability. Three support plates 64 are fixedly connected to the arc surface of the support rod 51. Push plates 65 are slidably connected to the surface of the support plates 64, and one end of the push plate 65 is fixedly connected to a protrusion 66. Pushing the push plate 65 within the support plate 64 causes the protrusion 66 to insert into the anti-slip pad 63, thereby improving its stability and facilitating periodic replacement. A second spring 67 is fixedly connected to the surface of the push plate 65, and one end of the second spring 67 is fixedly connected to the support plate 64. Under the pull of the second spring 67, the push plate 65 will drive the spike 66 to be stably inserted into the anti-slip pad 63, thereby improving the stability of the push plate 65. At this time, the anti-slip pad 63 can effectively improve the stability of the support rod 51, reduce the problem of shaking when the overhead frame is working, and at the same time, it can protect the support rod 51 and reduce the wear of the support rod 51 after long-term operation.

[0051] Working principle: When assembling the overhead frame, first separate the limiting plates 403 on one side of the support plate 1. Then, rotate the support ring 402 inside the circular ring 401. The support ring 402 drives the limiting plate 403 to rotate to one side of the support plate 1. At this time, push the limiting rod 413 inside the fixing strip 412 to insert into the circular ring 401, thereby improving the stability of the support ring 402. Then, place one side of the support plate 1 flat on the ground. The support plate 1 will drive the square plate 404 on the limiting plate 403 to move. The square plate 404 drives the suction cup 40 5. Contact and adhesion with the ground facilitates a stable connection between the limiting plate 403 and the ground, thereby facilitating the support plate 1. At this time, the insert plate 407 inside the fixing plate 406 is pushed into the ring 401, thereby improving the stability of the limiting plate 403 and reducing the problem of shaking caused by external force impact. Then, the two sets of support plates 1 are placed on the ground according to the above method, and the top plate 2 is inserted into the two support plates 1. The support plates 1 and the top plate 2 are fixed by means of the connecting plate 3 and the locking screw. This facilitates the assembly and disassembly of the overhead frame by a single person, reducing manpower waste. When placing the disassembled overhead frame, the support ring 402 can be rotated to align the limiting plates 403 inside the support ring 402. At this time, the two support pieces 1 are moved closer together, and the two limiting plates 403 inside the support ring 402 are rotated to abut against each other, thereby wrapping and fixing the support pieces 1. The suction cups 405 abut against each other to perform preliminary fixing of the support pieces 1. At this time, the insert plate 407 inside the fixing plate 406 is pushed into the ring 401. This improves the connection and assembly efficiency between the support plates 1. At this time, under the action of the first spring 411, the slide bar 408 drives the clamping plate 409 to squeeze the support plate 1, thereby improving the fixing effect of the limiting plate 403 on the support plate 1. The anti-slip strip 410 further reduces the slippage of the support plate 1. By setting the fixing device 4, the splicing effect of the overhead frame is improved, reducing the problem that it is inconvenient for a single person to splice and assemble the overhead frame, making it easier to place the support plate 1, and maximizing the working efficiency of the overhead frame.

[0052] When the overhead frame is assembled and placed for use, the handle 56 can be rotated. The handle 56 drives the screw 55 in the fixing block 54 to rotate. The screw 55 drives the support rod 51 on the slide plate 52 to move along the slide groove 53, which facilitates the adjustment of the support rod 51. This makes it easier to place the overhead frame horizontally on ground of different heights, further improving the use effect of the overhead frame. At this time, push the insertion rod 57 into the fixing block 54, which improves the stability of the handle 56 and reduces the problem of the handle 56 loosening due to external impact, which would cause the overhead frame to shake. By setting the adjustment device 5, the adjustment effect of the overhead frame is improved, reducing the problem of the overhead frame being difficult to place on uneven ground, and maximizing the practicality of the overhead frame.

[0053] When the anti-slip pad 63 is placed at the bottom of the support rod 51, the pointed protrusion 61 can initially fix the anti-slip pad 63. At this time, the barbs 62 further improve the stability of the anti-slip pad 63. Pushing the push plate 65 in the support plate 64, the push plate 65 drives the pointed protrusion 66 to insert into the anti-slip pad 63, thereby improving the stability of the anti-slip pad 63 and facilitating the periodic replacement of the anti-slip pad 63. Under the pull of the second spring 67, the push plate 65 will drive the pointed protrusion 66 to be stably inserted into the anti-slip pad 63, thereby improving the stability of the push plate 65. At this time, the anti-slip pad 63 can effectively improve the stability of the support rod 51, reduce the problem of shaking during the operation of the overhead frame, and at the same time, it can protect the support rod 51, reducing the wear and tear of the support rod 51 after long-term operation. By setting the anti-slip device 6, the stability of the overhead frame during operation is improved, reducing the problem of the bottom wear of the overhead frame after long-term operation and making it difficult to replace, thus maximizing the use effect of the overhead frame.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable portal frame, comprising a support panel (1) and a top panel (2), characterized in that: The support plate (1) is provided in two sets, the top plate (2) is equipped with a connecting piece (3), the support plate (1) is equipped with a locking screw, the support plate (1) and the top plate (2) are spliced ​​together, and also includes: Fixing devices (4) are respectively set on the arc surface of the support plate (1) for supporting and assembling the support plate (1). The fixing devices (4) include a ring (401) fixedly connected to the arc surface of the support plate (1) and a limiting plate (403) for supporting and assembling the support plate (1). An adjustment device (5) is provided on the arc surface of the support plate (1) for adjusting the support plate (1). The adjustment device (5) includes a support rod (51) slidably connected to the inner wall of the support plate (1) and a screw (55) for adjusting the support plate (1). Anti-slip devices (6) are respectively installed on the surface of the support rod (51) to prevent the support plate (1) from slipping when it contacts the ground. The anti-slip device (6) includes an anti-slip pad (63) fixedly connected to the surface of the support rod (51) for preventing the support plate (1) from slipping when it contacts the ground. The fixing device (4) also includes a support ring (402), the support ring (402) and the circular ring (401) are rotatably connected, the limiting plate (403) and the support ring (402) are rotatably connected, one end of the limiting plate (403) is fixedly connected to a square plate (404), and a suction cup (405) is fixedly connected to the surface of the square plate (404). The circular rings (401) on the arc surfaces of the two sets of support plates (1) are distributed in a cross shape. The support ring (402) has a fixed strip (412) fixedly connected to its arc surface. The surface of the fixed strip (412) is slidably connected to two limiting rods (413). The arc surface of the ring (401) has several circular grooves. The limiting rods (413) are engaged with the circular grooves on the arc surface of the ring (401). The surface of the limiting plate (403) is fixedly connected to the fixing plate (406), and the surface of the fixing plate (406) is slidably connected to the insert plate (407). The arc surface of the ring (401) is provided with a number of slots, and the insert plate (407) and the slots on the arc surface of the ring (401) are engaged.

2. The detachable portal frame according to claim 1, characterized in that: The surface of the limiting plate (403) is slidably connected with a plurality of sliding rods (408). One end of the sliding rod (408) is fixedly connected with a clamping plate (409). One end of the clamping plate (409) is fixedly connected with a plurality of anti-slip strips (410). The arc surface of the sliding rod (408) is fitted with a first spring (411). The two ends of the first spring (411) are fixedly connected to the limiting plate (403) and the sliding rod (408) respectively.

3. The detachable portal frame according to claim 1, characterized in that: The adjustment device (5) further includes a groove (53) formed on the arc surface of the support plate (1), a slide plate (52) is fixedly connected to the arc surface of the support rod (51), the slide plate (52) and the groove (53) on the arc surface of the support plate (1) are slidably connected, two fixing blocks (54) are fixedly connected to the arc surface of the support plate (1), the screw (55) and the fixing blocks (54) are rotatably connected, one end of the screw (55) is fixedly connected to a throttle (56), and the slide plate (52) and the screw (55) are threadedly connected.

4. The detachable portal frame according to claim 3, characterized in that: The surface of the throttle (56) is slidably connected to the insert rod (57), and the surface of the fixing block (54) is provided with several insertion holes. The insert rod (57) and the insertion holes on the surface of the fixing block (54) are engaged.

5. The detachable portal frame according to claim 1, characterized in that: The anti-slip device (6) also includes barbs (62), which are fixedly connected to the spikes (61). The anti-slip pad (63) is placed on the lower surface of the support rod (51) and is a rubber pad.

6. The detachable portal frame according to claim 1, characterized in that: The support rod (51) has three support plates (64) fixedly connected to its arc surface. The support plate (64) has a push plate (65) slidably connected to its surface. One end of the push plate (65) has a spike (66) fixedly connected to it.

7. The detachable portal frame according to claim 6, characterized in that: A second spring (67) is fixedly connected to the surface of the push plate (65), and one end of the second spring (67) is fixedly connected to the support plate (64).

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