Adjusting device for a support and support

Abstract

The present application relates to the technical field of building construction, and particularly relates to a kind of adjusting device for support.A kind of adjusting device for support, including the support of being provided with spherical pit, the universal rotating mechanism of being rotatably arranged in spherical pit, the load-bearing mechanism for being connected with external inflation device and being arranged on universal rotating mechanism, the airbag mechanism of being arranged on the top of load-bearing mechanism and being communicated with load-bearing mechanism and the support mechanism of being arranged in airbag mechanism and being able to carry out telescopic motion under the driving of airbag mechanism;The support mechanism is telescopic structure, and the telescopic structure has compressed state in initial state and elongation state after airbag mechanism inflation.The adjusting device provided by the present application can realize the quick adjustment of the levelness and elevation of support, and is convenient to install and disassemble.The present application also provides a kind of support, and the support is suitable for steel bridge construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an adjustment device and support for a support frame. Background Technology

[0002] Currently, there are generally two ways to adjust the level of the support: the first method is to use the support foundation for leveling; the second method is to use a round pipe column of the same material as the support and the same diameter as each support column, weld one end of the round pipe column to the flange at the bottom of the support, and then weld the other end of the round pipe column to the embedded plate of the support foundation, or to the box-type foundation, and adjust the level through welding and cutting processes.

[0003] When constructing steel bridges on highways, the highway's sloping structure (higher in the middle and lower at both ends) necessitates a short construction period and rapid construction speed. Concrete foundations are unsuitable; only steel box foundations can be used. However, leveling under steel box foundations with cement mortar is also unsuitable, as it carries the risk of cracking and breakage. Therefore, the second method is generally used for leveling the supports. Furthermore, the elevation adjustment of the supports typically involves using appropriately sized steel cylindrical columns to erect horizontal distribution beams on top of the supports, and then adjusting the elevation through welding and cutting processes.

[0004] However, the aforementioned methods for adjusting the level and elevation of the support structure have several drawbacks: First, the welding and cutting process incurs wear and tear on the cylindrical columns with each adjustment, resulting in increasingly shorter columns, some of which may even become unusable after a single use, leading to high material consumption. Second, it carries the risk of causing irreversible damage to the support structure and compromising the flatness of the steel box-type foundation's interface. Finally, dismantling the support structure requires using gas cutting to remove the cylindrical columns from the top, followed by the bottom, making installation and dismantling difficult, time-consuming, labor-intensive, and costly. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned defects in the prior art. The first aspect of this invention provides an adjustment device for a support, which can quickly adjust the level and elevation of the support.

[0006] Based on the first aspect of the present invention, the second aspect of the present invention also provides a bracket including the above-mentioned adjustment device, which is suitable for steel bridge construction and helps to improve work efficiency.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An adjustment device for a support includes a support with a spherical recess, a universal rotating mechanism rotatably mounted in the spherical recess, a bearing mechanism mounted on the universal rotating mechanism and used for connection with an external inflation device, an airbag mechanism mounted on top of the bearing mechanism and communicating with the bearing mechanism, and a support mechanism mounted in the airbag mechanism and capable of telescopic movement under the drive of the airbag mechanism; the support mechanism is a telescopic structure, which has a compressed state in an initial state and an extended state after the airbag mechanism is inflated.

[0009] The adjustment device can achieve multi-angle adjustment in the horizontal direction by rotating the universal rotating mechanism in the spherical recess; the bearing mechanism is used to connect with the external inflation device, and the gas is transmitted to the airbag mechanism through the bearing mechanism. During the inflation process, the height of the airbag gradually increases, which drives the support mechanism to change from the compressed state in the initial state to the extended state, thereby enabling the adjustment device to achieve elevation adjustment.

[0010] Furthermore, the airbag mechanism includes an airbag body, an upper airbag flange secured to the upper end of the airbag body, and a lower airbag flange secured to the lower end of the airbag body. The upper airbag flange has several third screw holes along its edge. The airbag body includes a main body, a first flange extending radially outward from the upper end of the main body, and a second flange extending radially outward from the lower end of the main body. The first flange passes through a through hole in the upper airbag flange and abuts against the end face of the upper airbag flange. The second flange passes through a through hole in the lower airbag flange, with one end abutting against the end face of the lower airbag flange and the other end abutting against the supporting mechanism. By including the main body, the first flange, and the second flange in the airbag body, it is convenient to secure the upper and lower airbag flanges to the airbag body, facilitating the assembly of the adjustment device, and ensuring good overall structural stability of the adjustment device.

[0011] Preferably, the support mechanism within the airbag mechanism includes several interlocking sleeves and a guide flange mounted on the top of one of the sleeves away from the load-bearing mechanism; wherein, the sleeves closer to the load-bearing mechanism are welded to the load-bearing mechanism; the top of the sleeves away from the load-bearing mechanism has a cover plate, which is detachably connected to the guide flange; the guide flange abuts against the first flange portion; and several fifth screw holes, corresponding one-to-one with the third screw holes, are provided on the edge of the guide flange. By providing several fifth screw holes on the edge of the guide flange, and ensuring that the fifth screw holes correspond one-to-one with the third screw holes on the upper flange of the airbag, bolts or screws can be sequentially passed through the screw holes on the bottom flange of the bracket, the fifth screw holes on the guide flange, and the third screw holes on the upper flange of the airbag, thereby securing the adjustment device to the bracket without the need for traditional welding and cutting processes. This facilitates the installation and disassembly of the adjustment device and the bracket.

[0012] Preferably, all the sleeves are hollow tubular structures; the bottom of each sleeve has a first annular limiting protrusion extending radially outward; the top of each sleeve has a second annular limiting protrusion extending radially inward; when the support mechanism is in the extended state, the second annular limiting protrusion of each sleeve can abut against the first annular limiting protrusion of the adjacent sleeve that is away from the bearing mechanism. This limits the sliding extension distance of each sleeve, avoiding the risk that one sleeve may detach from another when several interconnected sleeves extend under the action of the airbag mechanism.

[0013] Furthermore, the supporting mechanism includes a supporting base and an inflation nozzle mounted on the supporting base for connection with an external inflation device; the supporting base has an air supply hole and an air guide hole communicating with the air supply hole; the inflation nozzle is installed in the air guide hole; the supporting base includes a supporting platform mounted on a universal rotating mechanism and a supporting flange disposed on the supporting platform near the airbag mechanism; the air supply hole is vertically disposed in the supporting platform and extends out from the supporting flange; the supporting flange is detachably connected to the airbag mechanism; the supporting platform near the universal rotating mechanism has a threaded mating hole.

[0014] Preferably, the universal rotation mechanism includes a spherical body that matches the spherical recess and is rotatably mounted on the support, and a mating part disposed on the spherical body and having external threads on its outer surface; the shape of the mating part matches the shape of the threaded mating hole; the universal rotation mechanism is threadedly connected through the threaded mating hole of the mating part.

[0015] Preferably, the support includes a support body with a spherical recess, a support flange at the bottom of the support body, and several reinforcing ribs on the outer wall of the support body connecting the support body and the support flange; the support flange has several first screw holes on its edge. By providing a support body and a support flange, and having several first screw holes on the edge of the support flange, bolts or screws can be sequentially passed through the first screw holes on the support flange and the screw holes on the box-type foundation structure to securely connect the adjusting device to the box-type foundation structure without the need for traditional welding and cutting processes. The installation and disassembly of the adjusting device and the box-type foundation structure are convenient.

[0016] Preferably, a fixing flange is fitted around the outside of the spherical body for fixing the spherical body within the support; the fixing flange is detachably connected to the support body. This allows the spherical body to be stably rotated and fitted into the spherical recess, and the overall structure of the adjusting device has good stability.

[0017] Preferably, the inflation nozzle is equipped with a valve core valve to prevent gas backflow in the airbag mechanism.

[0018] A support structure includes a support body and several adjustment devices for the support structure as described above; each of the adjustment devices is detachably installed at the bottom of each column of the support body, and the support structure is suitable for steel bridge construction.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. An adjustment device for a support frame according to the present invention comprises a support and a universal rotating mechanism. The support has a spherical recess, and the universal rotating mechanism is rotatably mounted in the spherical recess. Through the rotation of the universal rotating mechanism in the spherical recess, the adjustment device can achieve multi-angle adjustment in the horizontal direction. The device also includes a bearing mechanism, an airbag mechanism, and a support mechanism. The support mechanism is a telescopic structure. The inflation nozzle of the bearing mechanism is connected to an external inflation device. Gas is transmitted to the airbag mechanism through an air inlet. During inflation, the height of the airbag gradually increases, causing the support mechanism to change from an initial compressed state to an extended state, thereby enabling the adjustment device to achieve elevation adjustment. The adjustment device can quickly adjust the level and elevation of the support frame, achieve universal adjustment in all horizontal directions, and has the advantages of convenient operation, no need for climbing, and ensuring construction safety.

[0021] 2. By creating several fifth screw holes on the edge of the guide flange, and ensuring that these fifth screw holes correspond one-to-one with the third screw holes on the airbag flange, bolts or screws can be sequentially passed through the screw holes on the bottom flange of the support, the fifth screw holes on the guide flange, and the third screw holes on the airbag flange to securely connect the adjusting device to the support body. Alternatively, by providing a support including a support body and a support flange, and creating several first screw holes on the edge of the support flange, bolts or screws can be sequentially passed through the first screw holes on the support flange and the screw holes on the box-type foundation structure to securely connect the adjusting device to the box-type foundation structure. The adjusting device eliminates the need for traditional welding and cutting processes, saving material and labor costs. Its simple installation and disassembly methods improve work efficiency and shorten the construction cycle. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an adjustment device for a support according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of an adjustment device for a support according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the load-bearing mechanism in an adjustment device for a support according to an embodiment of the present invention;

[0025] Figure 4This is a cross-sectional view of a plurality of sleeves in an adjustment device for a support according to an embodiment of the present invention, when they are in an extended state.

[0026] Figure 5 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention.

[0027] [Explanation of reference numerals in the attached drawings] 1. Support; 11. Support body; 112. Spherical recess; 113. First connecting bolt hole; 12. Support flange; 121. First bolt hole; 13. Reinforcing rib; 2. Fixed flange; 21. Second connecting bolt hole; 3. Universal rotation mechanism; 31. Spherical body; 32. Connecting part; 4. Bearing mechanism; 41. Bearing seat; 411. Bearing platform; 4112. Threaded connecting hole; 412. Bearing flange; 4121. Second bolt hole; 42. Air inlet; 43. Inflation nozzle; 5. Airbag mechanism; 51. Airbag body; 51 1. Main body; 512. First flange; 513. Second flange; 52. Upper flange of airbag; 521. Third bolt hole; 53. Lower flange of airbag; 531. Fourth bolt hole; 6. Support mechanism; 61. First sleeve; 62. Second sleeve; 63. Third sleeve; 64. Guide flange; 641. Receiving groove; 6412. Third connecting bolt hole; 642. Fifth bolt hole; 65. Cover plate; 651. Fourth connecting bolt hole; 66. First annular limiting protrusion; 67. Second annular limiting protrusion; 7. Support body; 8. Box-type foundation structure. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0029] Please see Figure 1 and Figure 2 This invention provides an adjustment device for a support frame, comprising a support 1, a universal rotating mechanism 3, a bearing mechanism 4, an airbag mechanism 5, and a support mechanism 6. The support 1 has a spherical recess 112 at its top. The universal rotating mechanism 3 is rotatably mounted within the spherical recess 112. The bearing mechanism 4 is mounted on the universal rotating mechanism 3 and is connected to an external inflation device. The airbag mechanism 5 is mounted on the top of the bearing mechanism 4 and communicates with it. The support mechanism 6 is mounted within the airbag mechanism 5 and can extend and retract under the influence of the airbag mechanism 5.

[0030] The support 1 includes a support body 11, a support flange 12, and several reinforcing ribs 13. A spherical recess 112 is formed on the top of the support body 11. The support flange 12 is located at the bottom of the support body 11. Several reinforcing ribs 13 are evenly arranged on the outer wall of the support body 11, connecting the support body 11 and the support flange 12 to enhance the connection strength and stability between them and prevent deformation of the support flange 12. Several first screw holes 121 are provided on the edge of the support flange 12. Preferably, the support body 11 and the support flange 12 are integrally formed, facilitating the assembly of the adjustment device.

[0031] The universal rotating mechanism 3 includes a spherical body 31 and a mating part 32. The spherical body 31 matches the spherical recess 112 and is rotatably mounted on the support 1. The mating part 32 is disposed on the spherical body 31, and its outer surface has external threads. The spherical body 31 and the mating part 32 are integrally formed, which facilitates the assembly of the adjusting device. Preferably, a fixing flange 2 is fitted on the outside of the spherical body 31 to fix the spherical body 31 inside the support 1, preventing the spherical body 31 from coming out of the spherical recess 112 when rotating inside the spherical recess 112, which helps to enhance the overall structural stability of the adjusting device.

[0032] Specifically, the fixed flange 2 and the support body 11 are detachably connected. In this embodiment, the upper edge of the support body 11 has several first connecting screw holes 113; the edge of the fixed flange 2 has several second connecting screw holes 21, which correspond one-to-one with the first connecting screw holes 113. The fixed flange 2 and the support body 11 can be fastened together by passing bolts through the second connecting screw holes 21 and the first connecting screw holes 113 in sequence, thus fixing the spherical body 31 inside the support 1. In other embodiments, screws can also be used to fasten the fixed flange 2 and the support body 11 together by passing screws through the second connecting screw holes 21 and the first connecting screw holes 113 in sequence, so this is not a limitation.

[0033] Please refer to the following: Figure 3 The supporting mechanism 4 includes a supporting base 41 and an inflation nozzle 43; the inflation nozzle 43 is mounted on the supporting base 41 and is used to connect with an external inflation device. The supporting base 41 has an air supply hole 42 and an air guide hole; the air guide hole communicates with the air supply hole 42; the inflation nozzle 43 is installed in the air guide hole, preferably, the inflation nozzle 43 is provided with a valve core valve, which is used to prevent the gas in the airbag mechanism 5 from flowing back.

[0034] Specifically, the support base 41 includes a support platform 411 and a support flange 412. The support platform 411 is mounted on the universal rotating mechanism 3, and a threaded mating hole 4112 is provided at one end of the support platform 411 near the universal rotating mechanism 3. The shape of the threaded mating hole 4112 matches the shape of the mating part 32, and the universal rotating mechanism 3 is threadedly connected to the threaded mating hole 4112 through the mating part 32. The support flange 412 is located at one end of the support platform 411 near the airbag mechanism 5, and several second threaded holes 4121 are provided on the edge of the support flange 412. The support flange 412 and the airbag mechanism 5 are detachably connected. The air supply hole 42 is vertically arranged inside the support platform 411 and extends out from the support flange 412 for communication with the airbag mechanism 5. The air guide hole is obliquely arranged inside the support platform 411 and communicates with the air supply hole 42. In this embodiment, the support platform 411 is a frustum structure with an inclination angle of 60° on the inclined surface of the frustum structure; preferably, the support platform 411 and the support flange 412 are integrally formed, which facilitates the assembly of the adjustment device.

[0035] The airbag mechanism 5 includes an airbag body 51, an upper airbag flange 52, and a lower airbag flange 53. The upper airbag flange 52 is secured to the upper end of the airbag body 51, and the lower airbag flange 53 is secured to the lower end of the airbag body 51. Specifically, the airbag body 51 includes a main body 511, a first flange 512, and a second flange 513. The first flange 512 extends radially and horizontally outward from the upper end of the main body 511, and the second flange 513 extends radially and horizontally outward from the lower end of the main body 511. The first flange 512 passes through a through hole in the upper airbag flange 52 and abuts against the end face of the upper airbag flange 52. The second flange 513 passes through a through hole in the lower airbag flange 53, with one end abutting against the end face of the lower airbag flange 53 and the other end abutting against the support mechanism 4.

[0036] The upper flange 52 of the airbag has several third screw holes 521 on its edge; the lower flange 53 of the airbag has several fourth screw holes 531 on its edge, each of which corresponds to a second screw hole 4121. The airbag mechanism 5 and the supporting mechanism 4 can be fastened together by passing bolts through the fourth screw holes 531 and the second screw holes 4121 in sequence. In other embodiments, screws can also be used to fasten the airbag mechanism 5 and the supporting mechanism 4 by passing screws through the fourth screw holes 531 and the second screw holes 4121 in sequence, so this is not a limitation.

[0037] Please refer to the following: Figure 4The support mechanism 6 is a telescopic structure, which has a compressed state in the initial state and an extended state after the airbag mechanism 5 is inflated. The support mechanism 6 includes several sleeves and a guide flange 64; the sleeves are interlocked; the guide flange 64 is installed on the top of a sleeve away from the bearing mechanism 4. Each sleeve is a hollow tubular structure; the bottom of each sleeve has a first annular limiting protrusion 66 extending radially outward; the top of each sleeve has a second annular limiting protrusion 67 extending radially inward. When the support mechanism 6 is extended under the action of the airbag mechanism 5, the second annular limiting protrusion 67 of the sleeve can abut against the first annular limiting protrusion 66 of the adjacent sleeve away from the bearing mechanism 4, which can limit the sliding extension distance of each sleeve and avoid the risk of one sleeve detaching from another sleeve when several interlocked sleeves are extended under the action of the airbag mechanism 5.

[0038] In this embodiment, the support mechanism 6 includes a first sleeve 61, a second sleeve 62, a third sleeve 63, and a guide flange 64; the first sleeve 61, the second sleeve 62, and the third sleeve 63 are sequentially connected; the first sleeve 61 is close to the bearing mechanism 4 and is welded to the bearing mechanism 4; the third sleeve 63 is away from the bearing mechanism 4; the second sleeve 62 is sleeved between the first sleeve 61 and the third sleeve 63. The guide flange 64 abuts against the first flange portion 512; a plurality of fifth screw holes 642 are provided on the edge of the guide flange 64, and the fifth screw holes 642 correspond one-to-one with the third screw holes 521.

[0039] The diameters of the first sleeve 61, the second sleeve 62, and the third sleeve 63 decrease sequentially; in other embodiments, the diameters of the first sleeve 61, the second sleeve 62, and the third sleeve 63 can be set to increase sequentially, so this is not a limitation. The gap between the second sleeve 62 and the first sleeve 61 is no greater than 3mm; the gap between the third sleeve 63 and the second sleeve 62 is no greater than 3mm. The top of the third sleeve 63 has a cover plate 65, which is detachably connected to the guide flange 64. The guide flange 64 has a receiving groove 641 with several third connecting screw holes 6412. The cover plate 65 has several fourth connecting screw holes 651, which correspond one-to-one with the third connecting screw holes 6412. The guide flange 64 and the third sleeve 63 can be fastened by passing bolts through the third connecting screw holes 6412 and the fourth connecting screw holes 651 in sequence. In other embodiments, screws can also be used to fasten the guide flange 64 and the third sleeve 63 by passing screws through the third connecting screw holes 6412 and the fourth connecting screw holes 651 in sequence, so it is not limited to this.

[0040] Preferably, the first sleeve 61, the second sleeve 62, and the third sleeve 63 are all steel components and the pipe openings are all rounded; and the wall thickness of the first sleeve 61, the second sleeve 62, and the third sleeve 63 is 20mm, which helps to increase the strength of the support mechanism 6 and improve the service life of the support mechanism 6.

[0041] Please refer to the following: Figure 5 The present invention also provides a support frame, which includes a support body 7 and several adjustment devices for the support frame as described above; each adjustment device is detachably mounted on the bottom of each column of the support body 7. Specifically, the support body 7 includes four columns, each of which has a flange at its bottom with several screw holes. The four adjustment devices are detachably connected to the four columns. Preferably, the support frame also includes two box-type base structures 8; each box-type base structure 8 is detachably connected to two of the adjustment devices.

[0042] During installation, bolts are sequentially passed through the first screw hole 121 on the support flange 12 and the screw hole on the box-type foundation structure 8 to securely connect the adjustment device to the box-type foundation structure 8. Then, bolts are sequentially passed through the screw hole on the bottom flange of the column, the fifth screw hole 642 on the guide flange 64, and the third screw hole 521 on the upper flange 52 of the airbag to securely connect the adjustment device to the support body 7. Traditional welding and cutting processes are not required, making the installation and disassembly of the adjustment device, support body 7, and box-type foundation structure 8 convenient. In use, the adjustment device achieves multi-angle adjustment in the horizontal direction by rotating the universal rotating mechanism 3 within the spherical recess 112. The inflation nozzle 43 connects to an external inflation device, and the height of the airbag body 51 gradually increases during inflation, thereby causing the support mechanism 6 to change from its initial compressed state to its extended state, thus achieving elevation adjustment. This adjustment device can quickly adjust the levelness and elevation of the support, and also has the advantages of convenient operation, no need for climbing, and ensured construction safety.

[0043] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. An adjustment device for a support, characterized in that, It includes a support (1) with a spherical recess (112), a universal rotating mechanism (3) rotatably installed in the spherical recess (112), a bearing mechanism (4) installed on the universal rotating mechanism (3) and used for connection with an external inflation device, an airbag mechanism (5) installed on the top of the bearing mechanism (4) and connected to the bearing mechanism (4), and a support mechanism (6) installed in the airbag mechanism (5) and capable of telescopic movement under the drive of the airbag mechanism (5); the support mechanism (6) is a telescopic structure, which has a compressed state in the initial state and an extended state after the airbag mechanism (5) is inflated; The airbag mechanism (5) includes an airbag body (51), an upper airbag flange (52) mounted on the upper end of the airbag body (51), and a lower airbag flange (53) mounted on the lower end of the airbag body (51); a plurality of third screw holes (521) are provided on the edge of the upper airbag flange (52). The airbag body (51) includes a main body (511), a first flange (512) formed by extending radially outward from the upper end of the main body (511), and a second flange (513) formed by extending radially outward from the lower end of the main body (511). The first flange (512) passes through a through hole on the upper flange (52) of the airbag and abuts against the end face of the upper flange (52) of the airbag. The second flange (513) passes through a through hole on the lower flange (53) of the airbag. One end of the second flange (513) abuts against the end face of the lower flange (53) of the airbag, and the other end abuts against the bearing mechanism (4).

2. The adjustment device for a support according to claim 1, characterized in that, The support mechanism (6) within the airbag mechanism (5) includes several sleeves that are nested together and a guide flange (64) mounted on the top of a sleeve that is far from the bearing mechanism (4). Among them, the sleeve close to the bearing mechanism (4) is welded to the bearing mechanism (4); the top of the sleeve away from the bearing mechanism (4) has a cover plate (65), which is detachably connected to the guide flange (64); the guide flange (64) abuts against the first flange (512); and a plurality of fifth screw holes (642) corresponding one-to-one with the third screw hole (521) are opened on the edge of the guide flange (64).

3. The adjustment device for a support according to claim 2, characterized in that, The sleeves are all hollow tubular structures; the bottom of each sleeve has a first annular limiting protrusion (66) extending radially outward; the top of each sleeve has a second annular limiting protrusion (67) extending radially inward. When the support mechanism (6) is in the extended state, the second annular limiting protrusion (67) of the sleeve can abut against the first annular limiting protrusion (66) of the sleeve that is adjacent to it and away from the bearing mechanism (4).

4. The adjustment device for a support according to claim 1, characterized in that, The supporting mechanism (4) includes a supporting base (41) and an inflation nozzle (43) mounted on the supporting base (41) and used for connection with an external inflation device; the supporting base (41) has an air supply hole (42) and an air guide hole communicating with the air supply hole (42); the inflation nozzle (43) is installed in the air guide hole; The support base (41) includes a support platform (411) mounted on the universal rotating mechanism (3) and a support flange (412) located at one end of the support platform (411) near the airbag mechanism (5); the air outlet (42) is vertically located inside the support platform (411) and extends out through the support flange (412); the support flange (412) is detachably connected to the airbag mechanism (5); a threaded mating hole (4112) is provided at one end of the support platform (411) near the universal rotating mechanism (3).

5. An adjustment device for a support according to claim 4, characterized in that, The universal rotating mechanism (3) includes a spherical body (31) that matches the spherical recess (112) and is rotatably mounted on the support (1) and a mating part (32) that is disposed on the spherical body (31) and has external threads on its outer surface; the shape of the mating part (32) matches the shape of the threaded mating hole (4112); the universal rotating mechanism (3) is threadedly connected to the threaded mating hole (4112) through the mating part (32).

6. An adjustment device for a support according to claim 5, characterized in that, The support (1) includes a support body (11) with a spherical recess (112), a support flange (12) at the bottom of the support body (11), and a number of reinforcing ribs (13) on the outer wall of the support body (11) and connecting the support body (11) and the support flange (12); the support flange (12) has a number of first screw holes (121) on its edge.

7. An adjustment device for a support according to claim 6, characterized in that, The spherical body (31) is fitted with a fixing flange (2) for fixing the spherical body (31) inside the support (1); the fixing flange (2) is detachably connected to the support body (11).

8. An adjustment device for a support according to claim 4, characterized in that, The inflation nozzle (43) is equipped with a valve core valve.

9. A stent, characterized in that, It includes a support body (7) and several adjustment devices for the support as described in any one of claims 1-8; each of the adjustment devices is detachably installed at the bottom of each column of the support body (7).

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