Valve casting machining base

Abstract

The invention provides a valve casting machining base, which relates to the technical field of workshop equipment and comprises a base body, a deformation base plate, a first reinforcer, a second reinforcer, a ventilation reaming hole, a working plate, a first anti-skid bedding, a second anti-skid bedding, a third anti-skid bedding, a fourth anti-skid bedding, a fifth anti-skid bedding and a sixth anti-skid bedding. According to the valve casting machining base, stress decomposition of the valve casting machining base is achieved, a valve casting body is rapidly and stably fixed, and meanwhile the problem that in the prior art, the stress strength of the base cannot be well relieved is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of workshop equipment, and in particular to a processing base for valve castings. Background Art

[0002] A valve is a mechanical device that can control the flow rate, flow direction, and pressure of a fluid medium. It is mainly used as a control component in various pipeline conveying systems and has a series of functions such as cutoff, regulation, and backflow. It is widely used in multiple fields such as petroleum, factories, water conservancy, and electric power. In the prior art, valves are classified into shut-off valves, check valves, and regulating valves according to their uses. When producing a valve housing, it is mainly cast to form the valve integrally, and then other valve castings are installed together. After testing, it can be used normally.

[0003] The Chinese patent with the patent name of a processing base for valve castings and the publication number of CN218534443U that has been publicly disclosed has a structure including a workbench body and a fixing plate; a pair of fixing plates are fixedly connected to both sides of the top of the workbench body; an electric cylinder is provided on the side wall of the fixing plate; the output end of the electric cylinder is fixedly connected to a pressing plate; multiple round holes are formed on the side wall of the pressing plate; a plurality of first springs are fixedly connected to the side wall of the pressing plate; the end of the first spring is fixedly connected to a fixing pin; the fixing pin passes through the round hole and penetrates the pressing plate.

[0004] Through the structural design of setting the fixing plate, electric cylinder, pressing plate, first spring, and fixing pin, this patent effectively fixes the valve casting, increases the fixing effect of the equipment, reduces the situation of poor fixing effect of the valve casting, and facilitates the processing of the valve casting by the staff; at the same time, through the structural design of setting the sealing cover and the pull ring, the sealing effect inside the through hole is effectively increased, the situation of dust and impurities entering the through hole is reduced, the smoothness of the tongue sliding inside the through hole is improved, and the service life of the equipment is increased. However, in the production of valve castings, the problems of the fatigue strength and service life of the base cannot be optimized and improved. Summary of the Invention

[0005] The purpose of this application is to provide a processing base for valve castings, which solves the problem in the prior art that it is impossible to reasonably relieve the stress intensity of the base and the service life of the base.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions: A processing base for a valve casting, including a seat body, further including: a deformation cushion plate, a first reinforcing member, a second reinforcing member, a ventilation hole expansion, a working plate, a first anti-slip cushion, a second anti-slip cushion, a third anti-slip cushion, a fourth anti-slip cushion, a fifth anti-slip cushion, and a sixth anti-slip cushion; wherein, the annular cushion plate is flexibly connected to the end face of the seat body, the first reinforcing member is fixedly connected to the periphery of the seat body, the second reinforcing member is fixedly connected to the periphery of the seat body, and the first reinforcing member and the second reinforcing member are arranged at intervals; the ventilation hole expansion is opened on the end face of the working plate and penetrates through and is evenly distributed on the first anti-slip cushion, the second anti-slip cushion, the third anti-slip cushion, the fourth anti-slip cushion, the fifth anti-slip cushion, and the sixth anti-slip cushion on the end face of the working plate.

[0007] In some embodiments, both the first reinforcing member and the second reinforcing member are wedge-shaped, and the number of the first reinforcing member and the second reinforcing member is greater than or equal to, and auxiliary seats are fixedly connected to the bottoms of the first reinforcing member and the second reinforcing member.

[0008] In some embodiments, a driver is electrically connected to the end of the deformation cushion plate, and a wire is connected between the driver and the deformation cushion plate; the driver drives and controls the expansion and contraction of the deformation cushion plate through the wire.

[0009] In some embodiments, a first pneumatic support column, a second pneumatic support column, and a third pneumatic support column are movably connected inside the seat body, the first pneumatic support column and the second pneumatic support column are arranged at intervals, and the second pneumatic support column and the first pneumatic support column are arranged at intervals.

[0010] In some embodiments, a first telescopic abutting column is movably connected to the bottom end of the first pneumatic support column, a second telescopic abutting column is movably connected to the bottom end of the second pneumatic support column, and a third telescopic abutting column is movably connected to the bottom end of the third pneumatic support column; wherein, the first telescopic abutting column, the second telescopic abutting column, and the third telescopic abutting column jack up the corresponding first pneumatic support column, second pneumatic support column, and third pneumatic support column.

[0011] In some embodiments, first special-shaped holes, second special-shaped holes, and third special-shaped holes are correspondingly opened in the areas of the outer periphery of the seat body corresponding to the first telescopic abutting column, the second telescopic abutting column, and the third telescopic abutting column.

[0012] In some embodiments, the annular backing plate is evenly distributed with expansion and contraction flexible cylinders, and each expansion and contraction flexible cylinder at least includes a first connecting seat, a first flexible transition piece, a second connecting seat, a second flexible connecting piece, a flexible cylinder body, and bumps; wherein the first connecting seat is connected to the first flexible transition piece, the first flexible transition piece is connected to the second connecting seat, the second connecting seat is connected to the second flexible connecting piece, the second flexible connecting piece is connected to the flexible cylinder body, and the bumps are evenly distributed at intervals on the outer peripheral side of the flexible cylinder body.

[0013] In some embodiments, each of the first pneumatic strut, the second pneumatic strut, and the third pneumatic strut includes a top plate, a first deformation bladder, a connecting block, a second deformation bladder, and a bottom plate that are connected in sequence; wherein, the top plate and the connecting block squeeze the first deformation bladder towards each other, and the connecting block and the bottom plate squeeze the second deformation bladder towards each other; positioning holes and centering sleeve holes are formed on the surface of the top plate, and the positioning holes and the centering sleeve holes are used to determine the central position of the top plate.

[0014] In some embodiments, the bottom end of the seat body is fixedly connected with a first fastening bolt, a second fastening bolt, a first side fastening bolt, and a second side fastening bolt around it.

[0015] In some embodiments, a first arc-shaped groove is correspondingly formed on the left side of the seat body, and a second arc-shaped groove is correspondingly formed on the right side of the seat body.

[0016] Based on the above technical features, the beneficial effects of the present invention are as follows: The present invention is provided with a seat body, a deformation backing plate, a first reinforcing member, a second reinforcing member, a ventilation expansion hole, a working plate, a first anti-slip mat, a second anti-slip mat, a third anti-slip mat, a fourth anti-slip mat, a fifth anti-slip mat, and a sixth anti-slip mat. It realizes the force decomposition of the base for valve casting processing; at the same time, through the setting of the first anti-slip mat, the second anti-slip mat, the third anti-slip mat, the fourth anti-slip mat, the fifth anti-slip mat, and the sixth anti-slip mat, the fixing of the valve casting body is realized, which is effectively different from the complex fixing structure of the prior art, greatly reducing the space of the base and improving the available processing space. In summary, this application solves the problems that the prior art cannot better relieve the stress intensity of the base and the service life of the base. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1Isometric schematic diagram of the processing base of the present invention;

[0019] Figure 2 Front view structural schematic diagram of the processing base of the present invention;

[0020] Figure 3 Schematic diagram of the expansion and contraction flexible cylinder structure of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the first pneumatic strut of the present invention;

[0022] Figure 5 End view schematic diagram of the first pneumatic strut of the present invention;

[0023] Figure 6 Bottom view schematic diagram of the processing base for valve castings of the present invention;

[0024] Figure 7 Top view schematic diagram of the processing base for valve castings of the present invention;

[0025] Figure 8 Left view schematic diagram of the processing base for valve castings of the present invention;

[0026] Figure 9 Right view schematic diagram of the processing base for valve castings of the present invention;

[0027] Figure 10 Working state diagram of the processing base for valve castings of the present invention.

[0028] It should be noted that, Figure 4 It is also the schematic diagram of the structure of the second and third pneumatic struts; Figure 5 It is also the end view schematic diagram of the second and third pneumatic struts.

[0029] In the figure: 1 - base body; 2 - sixth anti-slip mat; 3 - first anti-slip mat; 4 - second anti-slip mat; 5 - ventilation and enlarged hole; 6 - working plate; 7 - third anti-slip mat; 8 - fourth anti-slip mat; 9 - first reinforcing member; 10 - fifth anti-slip mat; 11 - second reinforcing member; 12 - deformation cushion plate; 13 - wire; 14 - driver; 15 - first special-shaped hole; 16 - first telescopic abutting post; 17 - second special-shaped hole; 18 - second telescopic abutting post; 19 - third telescopic abutting post; 20 - third special-shaped hole; 21 - third pneumatic strut; 22 - second pneumatic strut; 23 - first pneumatic strut; 24 - first connecting seat; 25 - second connecting seat; 26 - flexible cylinder; 27 - bump; 28 - second flexible connector; 29 - first flexible transition piece; 30 - top plate; 31 - first deformation bladder; 32 - connecting block; 33 - second deformation bladder; 34 - bottom plate; 35 - centering sleeve hole; 36 - positioning hole; 37 - first side fastening bolt; 38 - first fastening bolt; 39 - second fastening bolt; 40 - second side fastening bolt; 41 - first arc groove; 42 - second arc groove; In order not to interfere with the technical features, dotted lines are used for the guiding lines without distinction. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It can be understood that in the prior art, although the valve casting base is an important supporting structure of the valve, it has many disadvantages, mainly reflected in the following aspects: Firstly, the material performance is limited. Traditional cast iron or cast steel materials are prone to defects such as pores, shrinkage cavities, and slag inclusions during the casting process, resulting in uneven strength or insufficient sealing performance; at the same time, in a humid or corrosive medium, the cast iron base is prone to rust or be eroded, shortening the service life. Secondly, in terms of structural design, complex structures or insufficient transition fillets are likely to cause stress concentration, resulting in cracking or deformation of the base. At the same time, the casting process may cause large size deviations of the base, affecting the assembly accuracy of the valve and the pipeline. Based on this, the optimization of the valve casting processing base has clear practical significance.

[0032] Embodiment 1

[0033] Please refer to Figures 1 - 10, an embodiment of the present invention provides a processing base for a valve casting, which relates to the technical field of workshop equipment. The device includes a base body 1, a deformation cushion plate 12, a first reinforcing member 9, a second reinforcing member 11, a ventilation expansion hole 5, a working plate 6, a first anti-slip cushion 3, a second anti-slip cushion 4, a third anti-slip cushion 7, a fourth anti-slip cushion 8, a fifth anti-slip cushion 10, and a sixth anti-slip cushion 2; wherein, the annular cushion plate 12 is flexibly connected to the end face of the base body 1, the first reinforcing member 9 is fixedly connected to the periphery of the base body 1, the second reinforcing member 11 is fixedly connected to the periphery of the base body 1, and the first reinforcing member 9 and the second reinforcing member 11 are arranged at intervals; the ventilation expansion hole 5 is opened on the end face of the working plate 6 and penetrates through and is uniformly distributed on the first anti-slip cushion 3, the second anti-slip cushion 4, the third anti-slip cushion 7, the fourth anti-slip cushion 8, the fifth anti-slip cushion 10, and the sixth anti-slip cushion 2 on the end face of the working plate 6. It should be noted that: based on the foregoing technical drawbacks and the environment of the prior art, the base body 1, the deformation cushion plate 12, the first reinforcing member 9, the second reinforcing member 11, the ventilation expansion hole 5, the working plate 6, the first anti-slip cushion 3, the second anti-slip cushion 4, the third anti-slip cushion 7, the fourth anti-slip cushion 8, the fifth anti-slip cushion 10, and the sixth anti-slip cushion 2 in the device of this embodiment can effectively fix the valve casting. At the same time, based on the deformation cushion plate 12, the first reinforcing member 9, and the second reinforcing member 11, the effective decomposition of the force on the processing base can be realized, and the original vertical force is decomposed into horizontal, tangential, and radial component forces, greatly improving the bearing life of the processing base. Among them, the annular cushion plate 12 is flexibly connected to the end face of the base body 1, the first reinforcing member 9 is fixedly connected to the periphery of the base body 1, the second reinforcing member 11 is fixedly connected to the periphery of the base body 1, and the first reinforcing member 9 and the second reinforcing member 11 are arranged at intervals. It can be understood that the overlapping area of the first reinforcing member 9 and the second reinforcing member 11 is less than or equal to 15%. The ventilation expansion hole 5 is opened on the end face of the working plate 6 and penetrates through and is uniformly distributed on the first anti-slip cushion 3, the second anti-slip cushion 4, the third anti-slip cushion 7, the fourth anti-slip cushion 8, the fifth anti-slip cushion 10, and the sixth anti-slip cushion 2 on the end face of the working plate 6. The opening of the ventilation expansion hole 5 can realize the circulation of air, timely dissipate heat, and at the same time can also realize the auxiliary air pressure fixation of the valve casting.

[0034] In some possible embodiments, both the first reinforcing member 9 and the second reinforcing member 11 are wedge-shaped, and the numbers of the first reinforcing member 9 and the second reinforcing member 11 are both greater than or equal to 2, and auxiliary seats are fixedly connected to the bottom ends of the first reinforcing member 9 and the second reinforcing member 11. It should be noted that: both the first reinforcing member 9 and the second reinforcing member 11 are wedge-shaped. Being set in this shape can effectively realize the support and fixation of the seat body 1 and the decomposition of pressure. The numbers of the first reinforcing member 9 and the second reinforcing member 11 are both greater than or equal to 2. It can be understood that when the number is greater than or equal to 2, bilateral fixation can be achieved, further improving the bearing capacity and strength. Auxiliary seats are fixedly connected to the bottom ends of the first reinforcing member 9 and the second reinforcing member 11. In this embodiment, the auxiliary seat can be a frustum, a connecting block, etc.

[0035] In some possible embodiments, a driver 14 is electrically connected to the end of the deformation cushion plate 12, and a wire 13 is connected between the driver 14 and the deformation cushion plate 12; the driver 14 drives and controls the expansion and contraction of the deformation cushion plate 12 through the wire 13. It should be noted that: in order to ensure the timeliness of force decomposition, in this embodiment, a driver 14 is electrically connected to the end of the deformation cushion plate 12, and a wire 13 is connected between the driver 14 and the deformation cushion plate 12; the driver 14 drives and controls the expansion and contraction of the deformation cushion plate 12 through the wire 13. By adopting an electric control method, adjustment can be quickly realized, and the bearing time of the bearing capacity of the processing base can be minimized.

[0036] In some possible embodiments, a first pneumatic strut 23, a second pneumatic strut 22, and a third pneumatic strut 21 are movably connected inside the seat body 1. The first pneumatic strut 23 and the second pneumatic strut 22 are arranged at intervals, and the second pneumatic strut 22 and the first pneumatic strut 21 are arranged at intervals. It should be noted that: in order to further improve the service life of the seat body 1, in this embodiment, a first pneumatic strut 23, a second pneumatic strut 22, and a third pneumatic strut 21 are movably connected inside the seat body 1. The first pneumatic strut 23 and the second pneumatic strut 22 are arranged at intervals, and the second pneumatic strut 22 and the first pneumatic strut 21 are arranged at intervals. It can be understood that by setting the first pneumatic strut 23, the second pneumatic strut 22, and the third pneumatic strut 21, the decomposition of the pressure on the valve casting is assisted, and it can be understood that this method indirectly realizes the double decomposition of the force.

[0037] In some possible embodiments, a first telescopic abutting column 16 is movably connected to the bottom end of the first pneumatic column 23, a second telescopic abutting column 18 is movably connected to the bottom end of the second pneumatic column 22, and a third telescopic abutting column 19 is movably connected to the bottom end of the third pneumatic column 21. Among them, the first telescopic abutting column 16, the second telescopic abutting column 18, and the third telescopic abutting column 19 jack up the corresponding first pneumatic column 23, second pneumatic column 22, and third pneumatic column 21. It should be noted that: a first telescopic abutting column 16 is movably connected to the bottom end of the first pneumatic column 23, a second telescopic abutting column 18 is movably connected to the bottom end of the second pneumatic column 22, and a third telescopic abutting column 19 is movably connected to the bottom end of the third pneumatic column 21. The movable connection method can achieve height adjustment. In other words, when facing valve castings of different weights, the instantaneous deformation when they first contact the processing base may be different. At this time, the movable connection can correspondingly overcome it and achieve dynamic contraction. Among them, the first telescopic abutting column 16, the second telescopic abutting column 18, and the third telescopic abutting column 19 jack up the corresponding first pneumatic column 23, second pneumatic column 22, and third pneumatic column 21. It can be understood that jacking up the first pneumatic column 23, second pneumatic column 22, and third pneumatic column can effectively decompose the positive pressure under different instantaneous deformations.

[0038] In some possible embodiments, first special-shaped holes 15, second special-shaped holes 17, and third special-shaped holes 20 are correspondingly formed in the outer circumference of the seat body 1 at positions corresponding to the first telescopic abutting column 16, the second telescopic abutting column 18, and the third telescopic abutting column 19. It should be noted that: based on the decomposition of the aforementioned positive pressure, first special-shaped holes 15, second special-shaped holes 17, and third special-shaped holes 20 are correspondingly formed in the outer circumference of the seat body 1 in this embodiment at positions corresponding to the first telescopic abutting column 16, the second telescopic abutting column 18, and the third telescopic abutting column 19, which can achieve timely observation and adjustment of the telescopic situation. When the telescopic situation is inappropriate, the operator can make adjustments through the first special-shaped holes 15, second special-shaped holes 17, and third special-shaped holes 20.

[0039] In some possible embodiments, expansion and contraction flexible cylinders are evenly distributed inside the annular backing plate 12. The expansion and contraction flexible cylinder at least includes a first connection seat 24, a first flexible transition piece 29, a second connection seat 25, a second flexible connection piece 28, a flexible cylinder body 26, and bumps 27. Among them, the first connection seat 24 is connected to the first flexible transition piece 29, the first flexible transition piece 29 is connected to the second connection seat 25, the second connection seat 25 is connected to the second flexible connection piece 28, the second flexible connection piece 28 is connected to the flexible cylinder body 26, and the bumps 27 are evenly distributed at intervals on the outer peripheral side of the flexible cylinder body 26. It should be noted that the first connection seat 24 and the second connection seat 25 in the expansion and contraction flexible cylinder play a transitional role, the first flexible transition piece 29 and the second flexible connection piece 28 achieve flexible connection, and the flexible cylinder body 26 and the bumps 27 achieve auxiliary expansion. Among them, the first connection seat 24 is connected to the first flexible transition piece 29, the first flexible transition piece 29 is connected to the second connection seat 25, the second connection seat 25 is connected to the second flexible connection piece 28, the second flexible connection piece 28 is connected to the flexible cylinder body 26, and the bumps 27 are evenly distributed at intervals on the outer peripheral side of the flexible cylinder body 26. After the annular backing plate 12 expands, it can be further assisted in expansion by the expansion and contraction flexible cylinder to achieve double expansion guarantee.

[0040] Embodiment 2

[0041] On the basis of Embodiment 1, a valve casting processing base is provided. Specifically, in some possible embodiments, the first air column 23, the second air column 22, and the third air column 21 all include a top plate 30, a first deformation bladder 31, a connecting block 32, a second deformation bladder 33, and a bottom plate 34 that are connected in sequence. Among them, the top plate 30 and the connecting block 32 squeeze the first deformation bladder 31 towards each other, and the connecting block 32 and the bottom plate 34 squeeze the second deformation bladder 33 towards each other. Positioning holes 36 and centering sleeve holes 35 are formed on the surface of the top plate 30, and the positioning holes 36 and the centering sleeve holes 35 are used to determine the central position of the top plate 30. It should be noted that the top plate 30 and the connecting block 32 squeeze the first deformation bladder 31 towards each other, and the connecting block 32 and the bottom plate 34 squeeze the second deformation bladder 33 towards each other. It can be understood that the squeezing principle is "hamburger-style" squeezing. Positioning holes 36 and centering sleeve holes 35 are formed on the surface of the top plate 30, and the positioning holes 36 and the centering sleeve holes 35 are used to determine the central position of the top plate 30. Through the positioning holes 36 and the centering sleeve holes 35, the jacking center position can be effectively determined, avoiding the occurrence of jacking offset, resulting in uneven stress on the processing base, and even making it impossible to obtain a proper decomposition of the force.

[0042] In some possible embodiments, the bottom periphery of the seat body 1 is fixedly connected with a first fastening bolt 38, a second fastening bolt 39, a first side fastening bolt 37 and a second side fastening bolt 40. It should be noted that: the first fastening bolt 38, the second fastening bolt 39, the first side fastening bolt 37 and the second side fastening bolt 40 are all standard parts and can be adjusted adaptively according to the corresponding thread diameters.

[0043] In some possible embodiments, a first arc-shaped groove 41 is correspondingly formed on the left side of the seat body 1, and a second arc-shaped groove 42 is correspondingly formed on the right side of the seat body 1. It should be noted that: the first arc-shaped groove 41 and the second arc-shaped groove 42 have the same shape and the same radius.

[0044] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A processing base for a valve casting, comprising a base body (1), characterized in that, It also includes: a deformation cushion plate (12), a first reinforcing member (9), a second reinforcing member (11), a ventilation and reaming hole (5), a working plate (6), a first anti-slip cushion (3), a second anti-slip cushion (4), a third anti-slip cushion (7), a fourth anti-slip cushion (8), a fifth anti-slip cushion (10), and a sixth anti-slip cushion (2); wherein, the annular cushion plate (12) is flexibly connected to the end face of the seat body (1), the first reinforcing member (9) is fixedly connected to the peripheral side of the seat body (1), the second reinforcing member (11) is fixedly connected to the peripheral side of the seat body (1), and the first reinforcing member (9) and the second reinforcing member (11) are arranged at intervals; the ventilation and reaming hole (5) is opened on the end face of the working plate (6) and penetrates through and is uniformly distributed on the first anti-slip cushion (3), the second anti-slip cushion (4), the third anti-slip cushion (7), the fourth anti-slip cushion (8), the fifth anti-slip cushion (10), and the sixth anti-slip cushion (2) on the end face of the working plate (6).

2. The base according to claim 1, characterized in that, Both the first reinforcing member (9) and the second reinforcing member (11) are wedge-shaped, and the number of both the first reinforcing member (9) and the second reinforcing member (11) is greater than or equal to 2, and auxiliary seats are fixedly connected to the bottom ends of the first reinforcing member (9) and the second reinforcing member (11).

3. The base according to claim 1, characterized in that, One end of the deformation cushion plate (12) is electrically connected to a driver (14), and a wire (13) is connected between the driver (14) and the deformation cushion plate (12); the driver (14) drives and controls the expansion and contraction of the deformation cushion plate (12) through the wire (13).

4. The base according to claim 1, characterized in that, A first pneumatic support column (23), a second pneumatic support column (22), and a third pneumatic support column (21) are movably connected inside the seat body (1), the first pneumatic support column (23) and the second pneumatic support column (22) are arranged at intervals, and the second pneumatic support column (22) and the first pneumatic support column (21) are arranged at intervals.

5. The base according to claim 4, characterized in that, A first telescopic abutting column (16) is movably connected to the bottom end of the first pneumatic support column (23), a second telescopic abutting column (18) is movably connected to the bottom end of the second pneumatic support column (22), and a third telescopic abutting column (19) is movably connected to the bottom end of the third pneumatic support column (21); wherein, the first telescopic abutting column (16), the second telescopic abutting column (18), and the third telescopic abutting column (19) jack up the corresponding first pneumatic support column (23), second pneumatic support column (22), and third pneumatic support column (21).

6. The base according to claim 5, characterized in that, First special-shaped holes (15), second special-shaped holes (17), and third special-shaped holes (20) are correspondingly opened in the areas of the outer circumference of the seat body (1) corresponding to the first telescopic abutting column (16), the second telescopic abutting column (18), and the third telescopic abutting column (19).

7. The base according to claim 1, characterized in that, The circumferential backing plate (12) is evenly provided with expansion and contraction flexible cylinders, and the expansion and contraction flexible cylinders at least include a first connection seat (24), a first flexible transition piece (29), a second connection seat (25), a second flexible connection piece (28), a flexible cylinder body (26) and a convex block (27); wherein the first connection seat (24) is connected to the first flexible transition piece (29), the first flexible transition piece (29) is connected to the second connection seat (25), the second connection seat (25) is connected to the second flexible connection piece (28), the second flexible connection piece (28) is connected to the flexible cylinder body (26), and the convex blocks (27) are evenly arranged at intervals on the outer peripheral side of the flexible cylinder body (26).

8. The base according to claim 4, characterized in that, The first pneumatic strut (23), the second pneumatic strut (22) and the third pneumatic strut (21) each include a top plate (30), a first deformation bladder (31), a connection block (32), a second deformation bladder (33) and a bottom plate (34) which are connected in sequence; wherein, the top plate (30) and the connection block (32) oppositely extrude the first deformation bladder (31), and the connection block (32) and the bottom plate (34) oppositely extrude the second deformation bladder (33); positioning holes (36) and centering sleeve holes (35) are formed on the surface of the top plate (30), and the positioning holes (36) and the centering sleeve holes (35) are used to determine the central position of the top plate (30).

9. The base according to claim 1, characterized in that, The bottom end of the seat body (1) is fixedly connected with a first fastening bolt (38), a second fastening bolt (39), a first side fastening bolt (37) and a second side fastening bolt (40) around the circumference.

10. The base according to claim 1, characterized in that, A first arc-shaped groove (41) is correspondingly formed on the left side of the seat body (1), and a second arc-shaped groove (42) is correspondingly formed on the right side of the seat body (1).

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