CN220463068U

CN220463068U - Clamping device for air storage tank

Info

Publication number: CN220463068U
Application number: CN202321665580.7U
Authority: CN
Inventors: 杨绍波; 孙徽鉴; 王佳丽
Original assignee: Chengdu Yige Shangpin Technology Co ltd
Current assignee: Chengdu Yige Shangpin Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-02-09
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a clamping device for an air storage tank, which comprises a clamping station a and a clamping station b, wherein the clamping station a and the clamping station b are in mirror image distribution, a movable clamping device and a fixed clamping device are arranged in the clamping station a and the clamping station b, the movable clamping device can be slidably arranged on a sliding rail, the sliding rail is arranged on a mounting bottom plate, the fixed clamping device can be detachably arranged on the mounting bottom plate, and the fixed clamping device in the clamping station a is arranged close to the fixed clamping device in the clamping station b. Through the position of adjustment removal clamping device on the slide rail to change the distance between removal clamping device and the fixed clamping device, and then carry out the centre gripping to not unidimensional jar body, when the centre gripping distance of the size of jar body more than single centre gripping station, the staff can dismantle the fixed clamping device in the centre gripping station, thereby becomes single station with duplex position, and then has improved the commonality, avoids changing the frock.

Description

Clamping device for air storage tank

Technical Field

The utility model relates to the technical field of production and processing of air storage tanks, in particular to a clamping device for an air storage tank.

Background

The gas storage tank is an important device in a gas source system, welding is one of main processing methods in the manufacture of a pressure vessel, such as flat splicing, simple section and simple section, simple section and sealing head, manhole, connection of a connecting pipe, a shell and a flange, assembly welding of internal parts, connection of a support and the shell and the like, and the gas storage tank can be applied to various welding procedures in the production process of the gas storage tank. The produced air storage tanks are not unique in size, and each size corresponds to one clamping tool in welding. At present, various clamping tools are adopted to clamp and weld corresponding cylinders, but the tool replacement period is long, various tools exist, and staff have great inconvenience during replacement.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a clamping device for an air storage tank.

The aim of the utility model is achieved by the following technical scheme: the utility model provides a clamping device for gas holder, includes clamping station a and clamping station b, and clamping station a and clamping station b are mirror image distribution, and all are provided with in clamping station a and the clamping station b and remove clamping device and fixed clamping device, remove clamping device slidable mounting on the slide rail, the slide rail is installed on mounting plate, fixed clamping device demountable installation is on mounting plate, and the fixed clamping device in the clamping station a is close to the fixed clamping device installation in the clamping station b.

Preferably, the movable clamping device comprises a mounting plate, a driving mechanism a, a driving mechanism b, an end cover clamping mechanism, a barrel clamping mechanism and a lifting clamping mechanism, wherein the mounting plate is slidably mounted on the sliding rail, a supporting plate is vertically mounted on the upper surface of the mounting plate, the driving mechanism a is arranged on the outer side surface of the supporting plate, the end cover clamping mechanism is arranged on the inner side surface of the supporting plate, the driving mechanism a is used for driving the end cover clamping mechanism to do circular motion, the driving mechanism b is arranged on the upper surface of the mounting plate and used for driving the mounting plate to move on the sliding rail, the barrel clamping mechanism and the lifting clamping mechanism are further arranged on the upper surface of the mounting plate, and the lifting clamping mechanism is positioned between the barrel clamping mechanism and the end cover clamping mechanism.

Preferably, the fixed clamping device comprises a mounting plate, an end cover clamping mechanism a, a barrel clamping mechanism and a lifting clamping mechanism, wherein the mounting plate is detachably arranged on a mounting bottom plate, a supporting plate b is vertically arranged on the upper surface of the mounting bottom plate, the end cover clamping mechanism a is arranged on the side surface of the supporting plate b, the barrel clamping mechanism and the lifting clamping mechanism are further arranged on the upper surface of the mounting plate, and the lifting clamping mechanism is positioned between the barrel clamping mechanism and the end cover clamping mechanism a.

Preferably, the lifting clamping mechanism comprises a lifting platform, a cylinder support, a driving motor a and a bull eye bearing a, wherein the cylinder support is arranged on the upper surface of the lifting platform, the bull eye bearing a is arranged at the clamping end of the cylinder support and used for clamping the lower part of the tank body, the driving motor a is arranged on the mounting plate, and the power output end of the driving motor a is connected with a ball screw below the lifting platform through a key.

Preferably, the cylinder clamping mechanism comprises a clamping jaw cylinder, the clamping jaw cylinder is arranged on the mounting plate, the output end of the clamping jaw cylinder is connected with the clamping plate, the clamping plate is positioned on two sides of the clamping jaw cylinder, the upper end of the clamping plate is connected with the bullnose bearing support frame, the bullnose bearing b is arranged on the inner side of the bullnose bearing support frame, and the bullnose bearing b is used for clamping the upper part of the tank body.

Preferably, the end cover clamping mechanism comprises a three-jaw air cylinder and clamping jaws, an air cylinder mounting plate is mounted on the side face of the supporting plate, the driving mechanism a is used for driving the air cylinder mounting plate to do circular motion, the air cylinder mounting plate is provided with the three-jaw air cylinder, the output end of the three-jaw air cylinder is connected with the clamping jaws, and the clamping jaws are used for clamping the end cover of the tank body.

Preferably, the driving mechanism a comprises a driving motor b, a pinion and a large gear, the driving motor b is arranged on the side face of the supporting plate, the power output end of the driving motor b is connected with the pinion, the large gear is rotatably arranged on the other face of the supporting plate, the large gear is meshed with the pinion, and the cylinder mounting plate is arranged on the side face of the large gear.

Preferably, the end cover clamping mechanism a comprises a three-jaw air cylinder a and a clamping jaw a, an air cylinder mounting plate a is rotatably mounted on the side face of the supporting plate b, the air cylinder mounting plate a is provided with the three-jaw air cylinder a, the output end of the three-jaw air cylinder a is connected with the clamping jaw a, and the clamping jaw a is used for clamping an end cover of the tank body.

Preferably, the lower ends of the support plate and the support plate b are respectively provided with a reinforcing plate, and the lower surface of the support plate b is installed on the installation plate through a locating pin.

Preferably, the driving mechanism b comprises a servo motor, a speed reducer and a sliding pinion, a sliding block is arranged below the mounting plate in the movable clamping device and sleeved on the sliding rail, a rack is arranged on one side of the sliding rail, the output end of the servo motor is connected with the speed reducer, the output end of the speed reducer is connected with the sliding pinion, and the sliding pinion is meshed with the rack.

The utility model has the following advantages: according to the utility model, the movable clamping device and the fixed clamping device are arranged in the clamping station, and the distance between the movable clamping device and the fixed clamping device is changed by adjusting the position of the movable clamping device on the sliding rail, so that the tank bodies with different sizes are clamped, and when the size of the tank body exceeds the clamping distance of a single clamping station, a worker can detach the fixed clamping device in the clamping station, so that the double station is changed into the single station, the universality is improved, and the tool replacement is avoided.

Drawings

FIG. 1 is a schematic diagram of the positional relationship of a clamping device;

FIG. 2 is a schematic diagram of a mobile clamping device;

fig. 3 is a schematic structural view of the driving mechanism a;

FIG. 4 is a schematic structural view of a fixed clamping device;

FIG. 5 is a schematic view of a lifting clamping mechanism;

FIG. 6 is a schematic structural view of a barrel clamping mechanism;

fig. 7 is a schematic structural view of the driving mechanism b;

in the figure, a 1-sliding rail, a 2-clamping station a, a 3-clamping station b, a 4-moving clamping device, a 5-fixed clamping device, a 6-driving mechanism b, a 7-driving mechanism a, an 8-supporting plate, a 9-mounting plate, a 10-three-jaw cylinder, a 11-bullnose bearing support frame, a 12-clamping jaw, a 13-lifting platform, a 15-supporting plate b, a 16-three-jaw cylinder a, a 17-positioning pin, a 18-end cover clamping mechanism a, a 19-clamping jaw a, a 20-bullnose bearing a, a 21-barrel support, a 22-clamping plate, a 23-driving motor a, a 24-lifting clamping mechanism, a 25-clamping jaw cylinder, a 26-barrel clamping mechanism, a 27-end cover clamping mechanism, a 28-bullnose bearing b, a 29-large gear, a 30-pinion, a 31-reinforcing plate, a 32-sliding block, a 33-servo motor, a 34-reducer, a 35-sliding pinion, a 36-rack, a 37-mounting base plate and a 38-driving motor b.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In this embodiment, as shown in fig. 1, a clamping device for an air storage tank includes a clamping station a2 and a clamping station b3, the clamping station a2 and the clamping station b3 are distributed in a mirror image, a movable clamping device 4 and a fixed clamping device 5 are disposed in the clamping station a2 and the clamping station b3, the movable clamping device 4 is slidably mounted on a sliding rail 1, the sliding rail 1 is mounted on a mounting bottom plate 37, the fixed clamping device 5 is detachably mounted on the mounting bottom plate 37, and the fixed clamping device 5 in the clamping station a2 is mounted close to the fixed clamping device 5 in the clamping station b 3. Through being provided with in the centre gripping station and remove clamping device 4 and fixed clamping device 5, remove clamping device 4 the position on slide rail 1 through the adjustment to change and remove the distance between clamping device 4 and the fixed clamping device 5, and then carry out the centre gripping to not unidimensional jar body, when the clamping distance of the size of jar body surpassing single centre gripping station, the staff can dismantle fixed clamping device 5 in the centre gripping station, thereby becomes single station with duplex position, and then improved the commonality, avoid changing the frock.

Further, as shown in fig. 2, the movable clamping device 4 includes a mounting plate 9, a driving mechanism a7, a driving mechanism b6, an end cover clamping mechanism 27, a barrel clamping mechanism 26 and a lifting clamping mechanism 24, the mounting plate 9 is slidably mounted on the sliding rail 1, the upper surface of the mounting plate 9 is vertically provided with a supporting plate 8, the outer side surface of the supporting plate 8 is provided with the driving mechanism a7, the inner side surface of the supporting plate 8 is provided with the end cover clamping mechanism 27, the driving mechanism a7 is used for driving the end cover clamping mechanism 27 to perform circular motion, the upper surface of the mounting plate 9 is provided with a driving mechanism b6, the driving mechanism b6 is used for driving the mounting plate 9 to move on the sliding rail 1, the upper surface of the mounting plate 9 is also provided with the barrel clamping mechanism 26 and the lifting clamping mechanism 24, and the lifting clamping mechanism 24 is located between the barrel clamping mechanism 26 and the end cover clamping mechanism 27. Specifically, according to the size of the can body, the driving mechanism b6 drives the mounting plate 9 to move on the slide rail 1, so as to adjust the distance between the movable clamping device 4 and the fixed clamping device 5, and after the distance is proper, the height of the lifting clamping mechanism 24 is adjusted to a proper position, the can body is placed on the lifting clamping mechanism 24 through the existing robot, one end of the can body is clamped through the barrel clamping mechanism 26 and the end cover clamping mechanism 27, the fixed clamping device 5 clamps the other end of the can body, so that the axis of the can body is coaxial with the axis of the end cover, that is, the height of the lifting clamping mechanism 24 is adjusted, so that the axis of the can body is coaxial with the axis of the end cover.

Still further, as shown in fig. 4, the fixed clamping device 5 includes a mounting plate 9, an end cap clamping mechanism a18, a barrel clamping mechanism 26 and a lifting clamping mechanism 24, the mounting plate 9 is detachably mounted on a mounting base plate 37, a supporting plate b15 is vertically mounted on the upper surface of the mounting base plate 37, the end cap clamping mechanism a18 is disposed on the side surface of the supporting plate b15, the barrel clamping mechanism 26 and the lifting clamping mechanism 24 are further disposed on the upper surface of the mounting plate 9, and the lifting clamping mechanism 24 is located between the barrel clamping mechanism 26 and the end cap clamping mechanism a 18. Specifically, the lifting and lowering clamp mechanism 24 in the fixed clamp device 5 is adjusted in synchronization with the lifting and lowering clamp mechanism 24 in the movable clamp device 4, and the cylinder clamp mechanism 26 and the end cap clamp mechanism 27 clamp the other end thereof.

In this embodiment, as shown in fig. 5, the lifting clamping mechanism 27 includes a lifting platform 13, a barrel support 21, a driving motor a23 and a bullnose bearing a20, the barrel support 21 is mounted on the upper surface of the lifting platform 13, the bullnose bearing a20 is disposed on the clamping end of the barrel support 21, the bullnose bearing a20 is used for clamping the lower part of the tank body, the driving motor a23 is mounted on the mounting plate 9, and the power output end of the driving motor a23 is connected with a ball screw key below the lifting platform 13. Specifically, the driving motor a23 is started, the driving motor a23 is connected with a ball screw on the lifting platform 13 through a key, so that circular motion is converted into linear up-down motion, the lifting platform 13 is driven to reciprocate up and down, the height of the cylinder support 21 is adjusted, and after the cylinder support 21 is placed on a tank body, the axis of the tank body is coaxial with the axis of the end cover.

Further, as shown in fig. 6, the cylinder clamping mechanism 26 includes a clamping jaw cylinder 25, the clamping jaw cylinder 25 is mounted on the mounting plate 9, the output end of the clamping jaw cylinder 25 is connected with the clamping plate 22, the clamping plate 22 is located at two sides of the clamping jaw cylinder 25, the upper end of the clamping plate 25 is connected with the bullseye bearing support frame 11, a bullseye bearing b28 is mounted at the inner side of the bullseye bearing support frame 11, and the bullseye bearing b28 is used for clamping the upper portion of the tank. Specifically, the clamping jaw cylinder 25 opens or clamps, so as to drive the clamping plate 22 to expand outwards or contract inwards, and further drive the bullnose bearing b28 to expand outwards or contract inwards, when the tank body needs to be clamped, the bullnose bearing b28 is controlled to expand outwards, so that the lower part of the tank body is conveniently placed on the cylinder support 21, and after the tank body is placed, the tank body is clamped by controlling the bullnose bearing b28 to contract inwards.

In this embodiment, the end cover clamping mechanism 27 includes a three-jaw cylinder 10 and a clamping jaw 12, a cylinder mounting plate is mounted on a side surface of the supporting plate 8, a driving mechanism a7 is used for driving the cylinder mounting plate to perform circular motion, the cylinder mounting plate is provided with the three-jaw cylinder 10, an output end of the three-jaw cylinder 10 is connected with the clamping jaw 12, and the clamping jaw 12 is used for clamping an end cover of the tank body. Further, as shown in fig. 3, the driving mechanism a7 includes a driving motor b38, a pinion 30 and a large gear 29, the driving motor b38 is disposed on the side of the support plate 8, the power output end of the driving motor b38 is connected with the pinion 30, the large gear 29 is rotatably mounted on the other surface of the support plate 8, and the large gear 29 is engaged with the pinion 30, and the cylinder mounting plate is mounted on the side of the large gear 29. Still further, end cover fixture a18 includes three-jaw cylinder a16 and clamping jaw a19, and cylinder mounting panel a is rotatably installed to the side of backup pad b15, installs three-jaw cylinder a16 on the cylinder mounting panel a, and the output of three-jaw cylinder a16 is connected with clamping jaw a19, and clamping jaw a19 is used for carrying out the centre gripping to the end cover of jar body. Specifically, the three-jaw cylinder 10 and the three-jaw cylinder a16 are used for controlling the clamping jaw 12 and the clamping jaw a19 to open or clamp, so that two ends of a can body are clamped, after the clamping is completed, the driving motor b38 is started to drive the pinion 30 to rotate, and the pinion 30 is meshed with the large gear 29, so that the pinion 30 can drive the large gear 29 to rotate in the rotating process, and the cylinder mounting plate is enabled to synchronously rotate, so that a welding gun can drive the can body to do circular motion under the premise of consistent horizontal height, the can body is welded through the driving mechanism a7, after the welding is completed, the welded can body is clamped through a robot, then the clamping jaw 12 and the clamping jaw a19 are controlled to open and the bullnose bearing b28 is outwards expanded, and the robot transfers the welded can body to a conveying line to a next workshop. In this embodiment, the welding gun is an existing device.

In the present embodiment, the lower ends of the support plate 8 and the support plate b15 are each provided with a reinforcing plate 31, and the lower surface of the support plate b15 is mounted on the mounting plate 9 by the positioning pins 17.

In this embodiment, as shown in fig. 7, the driving mechanism b6 includes a servo motor 33, a speed reducer 34 and a sliding pinion 35, a slider 32 is disposed below the mounting plate 9 in the moving clamping device 4, the slider 32 is sleeved on the slide rail 1, a rack 36 is disposed on one side of the slide rail 1, an output end of the servo motor 33 is connected with the speed reducer 34, an output end of the speed reducer 34 is connected with the sliding pinion 35, and the sliding pinion 35 is meshed with the rack 36. Specifically, when the position of the movable clamping device 4 on the slide rail 1 is required to be adjusted according to the size of the tank body, the servo motor 33 is started, the servo motor 33 converts the motor rotation speed into torque through the speed reducer 34, meanwhile, the speed reducer 34 transmits the torque to the sliding pinion 35, and the sliding pinion 35 moves back and forth on the rack 36 due to the meshing of the sliding pinion 35 and the rack 36, so that the mounting plate 9 is driven to move back and forth on the slide rail 1, the distance between the clamping device 4 and the fixed clamping device 5 is further moved, and the tank bodies with different sizes are clamped. In this embodiment, all kinds of cylinders and driving motors are controlled by the existing PLC controller, and are not improved here, and will not be described here again.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A clamping device for gas holder, its characterized in that: the automatic clamping device comprises a clamping station a (2) and a clamping station b (3), wherein the clamping station a (2) and the clamping station b (3) are in mirror image distribution, a movable clamping device (4) and a fixed clamping device (5) are arranged in the clamping station a (2) and the clamping station b (3), the movable clamping device (4) is slidably arranged on a sliding rail (1), the sliding rail (1) is arranged on an installation bottom plate (37), the fixed clamping device (5) is detachably arranged on the installation bottom plate (37), and the fixed clamping device (5) in the clamping station a (2) is close to the fixed clamping device (5) in the clamping station b (3);

the movable clamping device (4) comprises a mounting plate (9), a driving mechanism a (7), a driving mechanism b (6), an end cover clamping mechanism (27), a barrel clamping mechanism (26) and a lifting clamping mechanism (24), wherein the mounting plate (9) is slidably mounted on the sliding rail (1), a supporting plate (8) is vertically mounted on the upper surface of the mounting plate (9), the driving mechanism a (7) is arranged on the outer side surface of the supporting plate (8), the end cover clamping mechanism (27) is arranged on the inner side surface of the supporting plate (8), the driving mechanism a (7) is used for driving the end cover clamping mechanism (27) to perform circular motion, the driving mechanism b (6) is arranged on the upper surface of the mounting plate (9), the barrel clamping mechanism (26) and the lifting clamping mechanism (24) are further arranged on the upper surface of the mounting plate (9), and the lifting clamping mechanism (24) is located between the barrel clamping mechanism (26) and the end cover clamping mechanism (27);

the driving mechanism b (6) comprises a servo motor (33), a speed reducer (34) and a sliding pinion (35), a sliding block (32) is arranged below the mounting plate (9) in the movable clamping device (4), the sliding block (32) is sleeved on the sliding rail (1), a rack (36) is arranged on one side of the sliding rail (1), the output end of the servo motor (33) is connected with the speed reducer (34), the output end of the speed reducer (34) is connected with the sliding pinion (35), and the sliding pinion (35) is meshed with the rack (36).

2. A clamping device for a gas holder as defined in claim 1, wherein: the fixed clamping device (5) comprises a mounting plate (9), an end cover clamping mechanism a (18), a barrel clamping mechanism (26) and a lifting clamping mechanism (24), wherein the mounting plate (9) is detachably mounted on a mounting bottom plate (37), a supporting plate b (15) is vertically mounted on the upper surface of the mounting bottom plate (37), the end cover clamping mechanism a (18) is arranged on the side face of the supporting plate b (15), the barrel clamping mechanism (26) and the lifting clamping mechanism (24) are further arranged on the upper surface of the mounting plate (9), and the lifting clamping mechanism (24) is located between the barrel clamping mechanism (26) and the end cover clamping mechanism a (18).

3. A clamping device for a gas holder as claimed in claim 2, wherein: the lifting clamping mechanism (24) comprises a lifting platform (13), a cylinder support (21), a driving motor a (23) and a bullnose bearing a (20), wherein the cylinder support (21) is installed on the upper surface of the lifting platform (13), the bullnose bearing a (20) is arranged at the clamping end of the cylinder support (21), the bullnose bearing a (20) is used for clamping the lower part of a tank body, the driving motor a (23) is installed on a mounting plate (9), and the power output end of the driving motor a (23) is connected with a ball screw below the lifting platform (13) through a key.

4. A clamping device for a gas holder as claimed in claim 3, wherein: barrel fixture (26) are including clamping jaw cylinder (25), clamping jaw cylinder (25) are installed on mounting panel (9), the output of clamping jaw cylinder (25) is connected with clamping plate (22), just clamping plate (22) are located clamping jaw cylinder (25) both sides, the upper end of clamping plate (22) is connected with bullseye bearing support frame (11), bullseye bearing b (28) are installed to the inboard of bullseye bearing support frame (11), bullseye bearing b (28) are used for right the upper portion of jar body carries out the centre gripping.

5. A clamping device for a gas holder as defined in claim 1, wherein: the end cover clamping mechanism (27) comprises a three-jaw air cylinder (10) and clamping jaws (12), an air cylinder mounting plate is mounted on the side face of the supporting plate (8), the driving mechanism a (7) is used for driving the air cylinder mounting plate to do circular motion, the three-jaw air cylinder (10) is mounted on the air cylinder mounting plate, the output end of the three-jaw air cylinder (10) is connected with the clamping jaws (12), and the clamping jaws (12) are used for clamping an end cover of a tank body.

6. A clamping arrangement for a gas holder as defined in claim 5, wherein: the driving mechanism a (7) comprises a driving motor b (38), a pinion (30) and a large gear (29), wherein the driving motor b (38) is arranged on the side face of the supporting plate (8), the power output end of the driving motor b (38) is connected with the pinion (30), the large gear (29) is rotatably arranged on the other face of the supporting plate (8), the large gear (29) is meshed with the pinion (30), and the cylinder mounting plate is arranged on the side face of the large gear (29).

7. A clamping device for a gas holder as claimed in claim 2, wherein: the end cover clamping mechanism a (18) comprises a three-jaw air cylinder a (16) and a clamping jaw a (19), an air cylinder mounting plate a is rotatably mounted on the side face of the supporting plate b (15), the three-jaw air cylinder a (16) is mounted on the air cylinder mounting plate a, the output end of the three-jaw air cylinder a (16) is connected with the clamping jaw a (19), and the clamping jaw a (19) is used for clamping an end cover of a tank body.

8. A clamping arrangement for a gas holder as defined in claim 7, wherein: the lower ends of the supporting plate (8) and the supporting plate b (15) are respectively provided with a reinforcing plate (31), and the lower surface of the supporting plate b (15) is installed on the mounting plate (9) through a locating pin (17).