A special inside and outside galvanizing equipment for pressure vessel

Abstract

The application discloses a kind of inside and outside galvanizing equipment for special pressure vessel, belong to pressure vessel galvanizing technical field, including for the galvanizing of pressure vessel is put into mechanism, put into mechanism includes bottom plate and lifting frame, six connecting rods are fixedly installed on lifting frame, two taking and placing mechanisms for clamping the pressure vessel to be galvanized are provided on each connecting rod.The application is put into mechanism by being set up multi-station synchronous operation, realize the automatic lifting, translation and lowering of pressure vessel, make galvanizing, unloading and feeding process continuously carry out, substantially improve production efficiency;The taking and placing mechanism provided by the application is driven by the active triangular wheel and the passive triangular wheel alternately, so that the clamping rod switches the support point in stages during the galvanizing process, ensuring that the connecting ear of the pressure vessel is not fixedly blocked, avoiding the galvanizing blind area;The application uses the cooperation of the compression spring and the lower friction ring to keep the passive triangular wheel fixed in the non-driven state, preventing accidental rotation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure vessel galvanizing, in particular to an inner and outer galvanizing equipment for special pressure vessels. BACKGROUND

[0002] As an important equipment in the industrial field, special pressure vessels are widely used in petroleum chemical industry, energy, military industry and other industries, and their performance and quality are directly related to production safety and equipment life. In order to improve the corrosion resistance and service life of the pressure vessel, the inner and outer surfaces thereof usually need to be galvanized. The traditional galvanizing process mostly adopts manual operation or simple mechanical auxiliary mode, which has the following technical defects:

[0003] The traditional galvanizing equipment can usually only process a single pressure vessel at a time, and the loading and unloading process relies on manual operation, so it is difficult to realize continuous production, resulting in low production efficiency and being unable to meet the mass processing demand; the existing clamping mechanism mostly adopts fixed design, so the clamping position cannot be adjusted during galvanizing, resulting in a galvanizing blind area at the contact part of the pressure vessel and the clamp, and a secondary galvanizing is needed, which increases the process complexity; the traditional equipment lacks a cooperative motion mechanism, so the transfer, immersion and loading and unloading of the pressure vessel need to be carried out in steps, the operation process is complicated, and there is a risk of cross contamination of the plating solution. In order to solve the above problems, it is urgent to develop a new inner and outer galvanizing equipment, which can realize the automatic continuous galvanizing of the pressure vessel, and at the same time, through optimizing the dynamic adjustment capability of the clamping mechanism, ensure the full coverage of the plating layer, and improve the production efficiency and process stability. SUMMARY

[0004] In view of the above technical problems, the technical scheme adopted by the present application is as follows: an inner and outer galvanizing equipment for special pressure vessels, comprising a putting-in mechanism for galvanizing the pressure vessel, the putting-in mechanism comprising a bottom plate and a lifting frame, six connecting rods being fixedly installed on the lifting frame, and two taking and placing mechanisms for clamping the pressure vessel to be galvanized being arranged on each connecting rod.

[0005] Further, the putting-in mechanism comprises a galvanizing tank and an upper box fixedly installed on the bottom plate, a top motor fixedly installed on the upper box, track plates fixedly installed on both sides of the upper box, a rotating large gear wheel rotatably installed on the track plate, a sliding groove arranged on the rotating large gear wheel, and the top motor driving the rotating large gear wheel to rotate through gear transmission.

[0006] Further, a horizontal guide rail is fixedly installed on the bottom plate, a horizontal block is slidingly installed on the horizontal guide rail, the lifting frame is slidingly installed on the horizontal block, a sliding rod is fixedly installed on the horizontal block, and the sliding rod slides in the sliding groove.

[0007] Further, a left vertical groove, a horizontal groove and a right vertical groove are arranged on the track plate, and the sliding rod slides in the left vertical groove, the horizontal groove and the right vertical groove.

[0008] The top motor rotates to drive the rotating gear to rotate the rotating gear, and the rotating gear drives the sliding rod to rise along the right vertical groove through the sliding groove. At this time, the sliding rod drives the lifting frame and the connecting rod to rise, and the pressure container originally soaked in the galvanizing pool is lifted. Then the sliding rod enters the horizontal groove and moves to the upper part of the left vertical groove. At this time, the horizontal block slides along the horizontal guide rail. At this time, the galvanized pressure container reaches the bottom plate, and the next group of pressure containers to be galvanized reaches above the galvanizing pool. Then the sliding rod descends along the left vertical groove, and the pressure container to be galvanized is put into the galvanizing pool for galvanizing. At this time, the galvanized pressure container is taken away, and the next batch of pressure containers to be galvanized is placed on the taking and placing mechanism. Then the sliding rod rises along the left vertical groove, enters the right vertical groove through the horizontal groove, and reciprocates to realize the synchronous galvanizing of multiple pressure containers. When galvanizing, the last batch of galvanized pressure containers is taken off, and the next batch of pressure containers to be galvanized is placed on the taking and placing mechanism.

[0009] Further, the taking and placing mechanism comprises a vertical column fixedly installed on the connecting rod, a connecting cylinder rotatably installed on the vertical column, a driving triangular wheel fixedly installed on the connecting cylinder, a rotating motor fixedly installed on the vertical column, a driving gear fixedly installed on the motor shaft of the rotating motor, and a central gear fixedly installed on the connecting cylinder.

[0010] Further, the vertical column is fixedly installed at the bottom of the clamping frame, six clamping rods are slidably installed on the clamping frame, a supporting rod is fixedly installed on the clamping rod, a pushing column is fixedly installed on the clamping rod, a tension spring is arranged between the clamping rod and the clamping frame, six groups of connecting ears are arranged on the pressure container, and the supporting rod is located below the connecting ear when the taking and placing mechanism clamps the pressure container.

[0011] Further, the connecting cylinder is rotatably installed in the inner column, the passive triangular wheel is fixedly installed below the inner column, three pushing blocks are fixedly installed on the inner column, three wheel sliding grooves are arranged in the driving triangular wheel, the pushing blocks slide in the wheel sliding grooves, and the driving triangular wheel and the passive triangular wheel are respectively in contact with the six pushing columns.

[0012] When the pressure container is clamped, first, the pressure container is placed between the six supporting rods, at this time, the active triangular wheel pushes out the three push columns and the clamping rods, the passive triangular wheel pushes out the three push columns and the clamping rods, the six opening springs are stretched, the rotating motor rotates to drive the driving gear to rotate, the central gear drives the connecting cylinder and the active triangular wheel to rotate clockwise, when the active triangular wheel rotates for one sixth of a circle, the outer contour of the active triangular wheel and the passive triangular wheel is overlapped, at this time, the three clamping rods and the push columns which are originally supported by the active triangular wheel move inward under the rebound of the opening spring, the supporting rods reach below the connecting ears to clamp the pressure container, at this time, the edge of the wheel sliding groove is in contact with the push block, at this time, the pressure container is placed into the galvanizing pool through the lifting of the lifting frame, since there are three supporting rods below the connecting ears, there is a blind area in galvanizing, then the active triangular wheel continues to rotate clockwise, the active triangular wheel drives the passive triangular wheel to rotate synchronously for one sixth of a circle, with the synchronous rotation of the active triangular wheel and the passive triangular wheel, the clamping rods and the push columns beside the clamping rods and the push columns which are originally pushed out are pushed up, the clamping rods and the push columns which are originally pushed up rebound under the reset of the opening spring, so that the three supporting rods support the three galvanized connecting ears, so as to ensure that there is no blind spot in the galvanizing of the pressure container, when the galvanized pressure container needs to be taken down, the active triangular wheel rotates counterclockwise, the passive triangular wheel does not move, the push block slides in the wheel sliding groove, the active triangular wheel pushes out the other three push columns and the clamping rods which are not pushed up by the passive triangular wheel, and the clamping of the pressure container is released.

[0013] Further, the taking and placing mechanism further comprises a sliding ring slidingly installed on the stand column, a compression spring is arranged between the sliding ring and the connecting cylinder, a plurality of rolling balls are arranged below the sliding ring, the top of the inner column is in contact with the rolling balls below the sliding ring, and a lower friction ring is fixedly installed on the clamping frame and in contact with the bottom of the passive triangular wheel.

[0014] The compression spring makes the sliding ring compress above the inner column and compresses the passive triangular wheel on the lower friction ring, so that the passive triangular wheel and the push block do not rotate autonomously when not pushed by the active triangular wheel.

[0015] Compared with the prior art, the present application has the following beneficial effects: (1) the present application sets up a multi-station synchronous operation placing mechanism, utilizes the cooperative movement of the lifting frame, the horizontal guide rail and the sliding rod to realize the automatic lifting, translation and lowering of the pressure container, so that the galvanizing, unloading and loading processes are continuously carried out, and the production efficiency is greatly improved; (2) the present application adopts a dynamically adjustable taking and placing mechanism, the clamping rods are switched in stages by the alternative driving of the active triangular wheel and the passive triangular wheel during the galvanizing process, so that the connecting ears of the pressure container are not fixedly shielded and the galvanizing blind area is avoided; (3) the present application utilizes the cooperation of the compression spring and the lower friction ring to make the passive triangular wheel fixed in the non-driving state to prevent accidental rotation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the whole structure of the present application.

[0017] Figure 2 Structure diagram of the putting mechanism of the present application Figure 1 .

[0018] Figure 3 Structure diagram of the putting mechanism of the present application Figure 2 .

[0019] Figure 4 Structure diagram of the taking and putting mechanism of the present application Figure 1 .

[0020] Figure 5 Structure diagram of the taking and putting mechanism of the present application (clamping state).

[0021] Figure 6 Structure diagram of the taking and putting mechanism of the present application Figure 5 .

[0022] Figure 7 Structure diagram of the taking and putting mechanism of the present application (loosing state).

[0023] Figure 8 Structure diagram of the taking and putting mechanism of the present application Figure 2 .

[0024] Figure 9 Structure diagram of the taking and putting mechanism of the present application Figure 3 .

[0025] Figure 10 Structure diagram of the taking and putting mechanism of the present application Figure 4 .

[0026] Figure 11 Structure diagram of the taking and putting mechanism of the present application Figure 5 .

[0027] Fig. 101 - base plate; 102 - galvanizing pool; 103 - upper box; 104 - top motor; 105 - rotating large gear; 106 - sliding groove; 107 - track plate; 1071 - left vertical groove; 1072 - horizontal groove; 1073 - right vertical groove; 108 - sliding rod; 109 - horizontal guide rail; 110 - horizontal block; 111 - lifting frame; 112 - connecting rod; 201 - vertical column; 202 - rotating motor; 203 - driving gear; 204 - connecting cylinder; 205 - central gear; 206 - driving triangular wheel; 2061 - wheel sliding groove; 207 - clamping frame; 208 - clamping rod; 209 - supporting rod; 210 - opening spring; 211 - driven triangular wheel; 212 - inner column; 213 - pushing block; 214 - pushing column; 301 - sliding ring; 302 - compressing spring; 303 - lower friction ring; 4 - pressure container; 5 - connecting ear. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example: Reference Figures 1-11 A special pressure vessel internal and external galvanizing equipment includes an insertion mechanism for galvanizing a pressure vessel 4. The insertion mechanism includes a base plate 101 and a lifting frame 111. Six connecting rods 112 are fixedly installed on the lifting frame 111. Each connecting rod 112 is provided with two picking and placing mechanisms for clamping the pressure vessel 4 to be galvanized.

[0030] like Figure 2 , Figure 3 As shown, the loading mechanism includes a galvanizing tank 102 and an upper box 103 fixedly installed on the base plate 101. A top motor 104 is fixedly installed on the upper box 103. Track plates 107 are fixedly installed on both sides of the upper box 103. A rotating gear 105 is rotatably installed on the track plate 107. A sliding groove 106 is provided on the rotating gear 105. The top motor 104 drives the rotating gear 105 to rotate through gear transmission.

[0031] like Figure 2 , Figure 3 As shown, a horizontal guide rail 109 is fixedly installed on the base plate 101, a horizontal block 110 is slidably installed on the horizontal guide rail 109, a lifting frame 111 is slidably installed on the horizontal block 110, and a slide rod 108 is fixedly installed on the horizontal block 110, which slides in the slide groove 106.

[0032] like Figure 2 , Figure 3 As shown, the track plate 107 is provided with a left vertical groove 1071, a horizontal groove 1072 and a right vertical groove 1073, and the slide rod 108 slides in the left vertical groove 1071, the horizontal groove 1072 and the right vertical groove 1073.

[0033] The top motor 104 rotates to drive the rotating gear 105 to rotate through the gear transmission, the rotating gear 105 drives the sliding rod 108 to rise along the right vertical slot 1073 through the chute 106, at this time the sliding rod 108 drives the lifting frame 111 and the connecting rod 112 to rise, the pressure container 4 originally soaked in the galvanizing pool 102 is lifted, then the sliding rod 108 enters into the horizontal slot 1072, moves along the horizontal slot 1072 to the upper part of the left vertical slot 1071, at this time the horizontal block 110 slides along the horizontal guide rail 109, at this time the galvanized pressure container 4 reaches the bottom plate 101, the next group of pressure containers 4 to be galvanized reaches above the galvanizing pool 102, then the sliding rod 108 descends along the left vertical slot 1071, the pressure container 4 to be galvanized is put into the galvanizing pool 102 for galvanizing, at this time the galvanized pressure container 4 is taken away, and the next batch of pressure containers 4 to be galvanized is placed on the taking and placing mechanism, then the sliding rod 108 rises along the left vertical slot 1071, enters into the right vertical slot 1073 through the horizontal slot 1072, and the like is repeated, so that the multiple pressure containers 4 are synchronously galvanized, and when the pressure containers 4 are galvanized, the last batch of galvanized pressure containers 4 is taken away, and the next batch of pressure containers 4 to be galvanized is placed on the taking and placing mechanism.

[0034] As shown in Figures 4-11 , the taking and placing mechanism comprises a vertical column 201 fixedly installed on the connecting rod 112, a connecting cylinder 204 rotatably installed on the vertical column 201, a driving triangular wheel 206 fixedly installed on the connecting cylinder 204, a rotating motor 202 fixedly installed on the vertical column 201, a driving gear 203 fixedly installed on the motor shaft of the rotating motor 202, a central gear 205 fixedly installed on the connecting cylinder 204, and the central gear 205 is engaged with the driving gear 203.

[0035] As shown in Figures 4-11 , the bottom of the vertical column 201 is fixedly installed with a clamping frame 207, six clamping rods 208 are slidably installed on the clamping frame 207, a supporting rod 209 is fixedly installed on the clamping rod 208, a pushing column 214 is fixedly installed on the clamping rod 208, a spreading spring 210 is arranged between the clamping rod 208 and the clamping frame 207, six groups of connecting ears 5 are arranged on the pressure container 4, and the supporting rod 209 is located below the connecting ear 5 when the taking and placing mechanism clamps the pressure container 4.

[0036] As shown in Figures 4-11 , an inner column 212 is rotatably installed in the connecting cylinder 204, a driven triangular wheel 211 is fixedly installed below the inner column 212, three pushing blocks 213 are fixedly installed on the inner column 212, three wheel sliding grooves 2061 are arranged in the driving triangular wheel 206, the pushing block 213 slides in the wheel sliding groove 2061, and the driving triangular wheel 206 and the driven triangular wheel 211 are respectively in contact with the six pushing columns 214.

[0037] When the pressure container 4 is clamped, first, the pressure container 4 is placed between the six supporting rods 209, at this time, the active triangular wheel 206 pushes out the three pushing columns 214 and the clamping rods 208, the passive triangular wheel 211 pushes out the three pushing columns 214 and the clamping rods 208, the six opening springs 210 are stretched, the rotating motor 202 rotates to drive the driving gear 203 to rotate, through the central gear 205 to drive the connecting cylinder 204 and the active triangular wheel 206 to rotate clockwise, when the active triangular wheel 206 rotates one sixth of a circle, the active triangular wheel 206 coincides with the outer contour of the passive triangular wheel 211, at this time, the three clamping rods 208 and the pushing columns 214 which are originally pushed open by the active triangular wheel 206 move inward under the rebound of the opening spring 210, the supporting rod 209 reaches below the connecting lug 5, and the pressure container 4 is clamped, at this time, the edge of the wheel sliding groove 2061 is in contact with the pushing block 213, at this time, the pressure container 4 is placed into the galvanizing pool 102 through the lifting of the lifting frame 111, since there are three supporting rods 209 below the connecting lug 5, there is a blind area for galvanizing, then the active triangular wheel 206 continues to rotate clockwise, the active triangular wheel 206 drives the passive triangular wheel 211 to rotate one sixth of a circle synchronously, with the synchronous rotation of the active triangular wheel 206 and the passive triangular wheel 211, the clamping rods 208 and the pushing columns 214 beside the clamping rods 208 and the pushing columns 214 which are originally pushed open are pushed up, the clamping rods 208 and the pushing columns 214 which are originally pushed up rebound under the reset of the opening spring 210, so that the three supporting rods 209 support the three galvanized connecting lugs 5, so as to ensure that there is no blind spot for the galvanizing of the pressure container 4, when the galvanized pressure container 4 needs to be taken down, the active triangular wheel 206 rotates counterclockwise, the passive triangular wheel 211 does not move, the pushing block 213 slides in the wheel sliding groove 2061, the active triangular wheel 206 pushes out the other three pushing columns 214 and the clamping rods 208 which are not pushed up by the passive triangular wheel 211, and the clamping of the pressure container 4 is released.

[0038] As shown in Figures 4-11 , the taking and placing mechanism further comprises a sliding ring 301 slidingly installed on the stand column 201, a compression spring 302 is arranged between the sliding ring 301 and the connecting cylinder 204, a plurality of rolling balls are arranged below the sliding ring 301, the top of the inner column 212 is in contact with the rolling balls below the sliding ring 301, a lower friction ring 303 is fixedly installed on the clamping frame 207, and the lower friction ring 303 is in contact with the bottom of the passive triangular wheel 211.

[0039] As shown in Figures 4-11 , the compression spring 302 makes the sliding ring 301 compress above the inner column 212, and the passive triangular wheel 211 compresses on the lower friction ring 303, so that the passive triangular wheel 211 and the pushing block 213 do not rotate autonomously when they are not pushed by the active triangular wheel 206.

[0040] The working principle of the inner and outer galvanizing equipment for special pressure containers disclosed by the application is as follows: the top motor 104 rotates to drive the rotating large gear 105 to rotate through gear transmission, the rotating large gear 105 drives the sliding rod 108 to ascend along the right vertical groove 1073 through the sliding groove 106, at this time, the sliding rod 108 drives the lifting frame 111 and the connecting rod 112 to ascend, the pressure container 4 originally soaked in the galvanizing pool 102 is lifted, then the sliding rod 108 enters into the horizontal groove 1072 and moves to the upper part of the left vertical groove 1071 along the horizontal groove 1072, at this time, the horizontal block 110 slides along the horizontal guide rail 109, at this time, the pressure container 4 completed with galvanizing reaches the bottom plate 101, the next group of pressure containers 4 to be galvanized reaches above the galvanizing pool 102, then the sliding rod 108 descends along the left vertical groove 1071, the pressure containers 4 to be galvanized are put into the galvanizing pool 102 for galvanizing, at this time, the pressure container 4 completed with galvanizing is taken away, and the next group of pressure containers 4 to be galvanized is put on the taking and placing mechanism, then the sliding rod 108 ascends along the left vertical groove 1071 and enters into the right vertical groove 1073 through the horizontal groove 1072, and so on, the synchronous galvanizing of multiple pressure containers 4 is realized, and when the galvanizing is performed, the last group of pressure containers 4 completed with galvanizing is taken away, and the next group of pressure containers 4 to be galvanized is put on the taking and placing mechanism.When the pressure container 4 is clamped, first, the pressure container 4 is placed between the six supporting rods 209, at this time, the active triangular wheel 206 pushes out the three push columns 214 and the clamping rods 208, the passive triangular wheel 211 pushes out the three push columns 214 and the clamping rods 208, the six opening springs 210 are stretched, the rotating motor 202 rotates to drive the driving gear 203 to rotate, through the central gear 205 to drive the connecting cylinder 204 and the active triangular wheel 206 to rotate clockwise, when the active triangular wheel 206 rotates one sixth of a circle, the active triangular wheel 206 and the passive triangular wheel 211 are coincident in the outer contour, at this time, the three clamping rods 208 and the push columns 214 which are originally pushed open by the active triangular wheel 206 move inward under the rebound of the opening spring 210, the supporting rod 209 reaches below the connecting ear 5, and the pressure container 4 is clamped, at this time, the edge of the wheel sliding groove 2061 is in contact with the push block 213, at this time, the pressure container 4 is placed into the galvanizing pool 102 through the lifting of the lifting frame 111, since there are three supporting rods 209 below the connecting ear 5, there is a blind area for galvanizing, then the active triangular wheel 206 continues to rotate clockwise, the active triangular wheel 206 drives the passive triangular wheel 211 to rotate synchronously one sixth of a circle, with the synchronous rotation of the active triangular wheel 206 and the passive triangular wheel 211, the clamping rods 208 and the push columns 214 beside the clamping rods 208 and the push columns 214 which are originally pushed open are pushed up, the clamping rods 208 and the push columns 214 which are originally pushed up rebound under the reset of the opening spring 210, so that the three supporting rods 209 support the three galvanized connecting ears 5, so as to ensure that there is no blind spot for the galvanizing of the pressure container 4, when the galvanized pressure container 4 needs to be taken down, the active triangular wheel 206 rotates counterclockwise, the compression spring 302 makes the sliding ring 301 compress above the inner column 212, and the passive triangular wheel 211 is compressed on the lower friction ring 303, so that the passive triangular wheel 211 and the push block 213 do not rotate autonomously when they are not pushed by the active triangular wheel 206, therefore, at this time, the passive triangular wheel 211 does not move, the push block 213 slides in the wheel sliding groove 2061, the active triangular wheel 206 pushes out the other three push columns 214 and the clamping rods 208 which are not pushed up by the passive triangular wheel 211, and releases the clamping of the pressure container 4.

[0041] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change within the technical scope of the present application according to the technical scheme and the inventive concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. An inside and outside galvanizing apparatus for special pressure vessels, comprising a feeding mechanism for galvanizing a pressure vessel (4), characterized in that: The putting mechanism comprises a bottom plate (101) and a lifting frame (111), six connecting rods (112) are fixedly installed on the lifting frame (111), and two taking and placing mechanisms for clamping the pressure container (4) to be galvanized are arranged on each connecting rod (112); The taking and placing mechanism comprises a stand column (201) fixedly installed on the connecting rod (112), a connecting cylinder (204) rotatably installed on the stand column (201), a driving triangular wheel (206) fixedly installed on the connecting cylinder (204), a rotating motor (202) fixedly installed on the stand column (201), a driving gear (203) fixedly installed on the motor shaft of the rotating motor (202), and a central gear (205) fixedly installed on the connecting cylinder (204) and engaged with the driving gear (203). A clamping frame (207) is fixedly installed at the bottom of the stand column (201), six clamping rods (208) are slidably installed on the clamping frame (207), a supporting rod (209) is fixedly installed on the clamping rod (208), a pushing column (214) is fixedly installed on the clamping rod (208), a spreading spring (210) is arranged between the clamping rod (208) and the clamping frame (207), six groups of connecting ears (5) are arranged on the pressure container (4), and the supporting rod (209) is located below the connecting ear (5) when the taking and placing mechanism clamps the pressure container (4). An inner column (212) is rotatably installed in the connecting cylinder (204), a driven triangular wheel (211) is fixedly installed below the inner column (212), three pushing blocks (213) are fixedly installed on the inner column (212), three wheel sliding grooves (2061) are arranged in the driving triangular wheel (206), the pushing blocks (213) slide in the wheel sliding grooves (2061), and the driving triangular wheel (206) and the driven triangular wheel (211) are respectively in contact with the six pushing columns (214).

2. The apparatus for inner and outer galvanizing of special pressure vessels according to claim 1, characterized in that: The putting mechanism comprises a galvanizing tank (102) and an upper box (103) fixedly installed on the bottom plate (101), a top motor (104) is fixedly installed on the upper box (103), track plates (107) are fixedly installed on the two sides of the upper box (103), a rotating gear wheel (105) is rotatably installed on the track plate (107), a sliding groove (106) is arranged on the rotating gear wheel (105), and the top motor (104) drives the rotating gear wheel (105) to rotate through gear transmission.

3. The apparatus for inner and outer galvanizing of special pressure vessels according to claim 2, characterized in that: A horizontal guide rail (109) is fixedly installed on the bottom plate (101), a horizontal block (110) is slidably installed on the horizontal guide rail (109), the lifting frame (111) is slidably installed on the horizontal block (110), a sliding rod (108) is fixedly installed on the horizontal block (110), and the sliding rod (108) slides in the sliding groove (106).

4. The apparatus for inner and outer galvanizing of special pressure vessels according to claim 3, characterized in that: The track plate (107) is provided with a left vertical groove (1071), a horizontal groove (1072) and a right vertical groove (1073), and the sliding rod (108) slides in the left vertical groove (1071), the horizontal groove (1072) and the right vertical groove (1073).

5. The apparatus for inner and outer galvanizing of special pressure vessels according to claim 1, characterized in that: The pick-and-place mechanism further comprises a sliding ring (301) slidingly installed on the stand (201), a compression spring (302) is arranged between the sliding ring (301) and the connecting cylinder (204), a plurality of balls are arranged below the sliding ring (301), the top of the inner column (212) is in contact with the balls below the sliding ring (301), and a lower friction ring (303) is fixedly installed on the clamping frame (207) and in contact with the bottom of the passive triangular wheel (211).

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