Automatic inner supporting positioning device for stainless steel rocket tank ring seam welding

Abstract

This invention discloses an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks, relating to the field of rocket manufacturing technology. The device includes a main frame with a mounting platform on it. A counter-pressure platform and a support plate for placing a stainless steel cylinder are fixedly mounted on the surface of the mounting platform. The support mechanism includes four L-shaped support rods mounted on the mounting platform for supporting the stainless steel cylinder. The L-shaped support rods are rotatably connected to a sliding plate, and the L-shaped support rods and the sliding plate are connected by a torsion spring. A swing rod is rotatably mounted on the surface of the L-shaped support rods. Under the action of the reaction force of the counter-pressure platform, the counter-pressure mechanism is driven to move vertically upward. At this time, the movement of the counter-pressure mechanism, in cooperation with the positioning mechanism, positions and fixes the inner wall of the stainless steel cylinder, thereby achieving the purpose of fixing and shaping the stainless steel cylinder and avoiding local deformation caused by the gravity of the stainless steel cylinder later.

Description

Technical Field

[0001] This invention relates to the field of rocket manufacturing technology, and in particular to an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks. Background Technology

[0002] With the development of the aerospace industry, rocket manufacturing requires multiple processes, especially the manufacturing of rocket propellant tanks. Rocket propellant tanks are generally made of stainless steel and are used to store propellant in launch vehicles. Therefore, the welding precision of rocket propellant tanks needs to be strictly controlled.

[0003] Currently, when welding multiple sections of rocket propellant tanks, the stainless steel cylinders are manually placed on horizontal support frames for fixation. However, this method has drawbacks during installation. When the stainless steel cylinders are lifted to a horizontal position, they are unsupported and deform under their own weight, changing from a cylindrical shape to an elliptical shape. This results in localized deformation of the stainless steel cylinders. Although the horizontal support frames can restore the stainless steel cylinders to their original shape, the localized deformation creates internal stress, leading to precision errors during welding and affecting the accuracy of the rocket propellant tanks.

[0004] Based on this, the present invention designs an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks, aiming to solve the technical problems existing in the prior art mentioned in the background.

[0006] The present invention is implemented as follows: an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks, the device comprising: Main frame: It is equipped with a mounting platform, on which a counter-pressure platform and a support plate for placing stainless steel cylinders are fixedly installed; Support mechanism: includes four L-shaped support rods mounted on the mounting platform for supporting the stainless steel cylinder. The L-shaped support rods are rotatably connected to the sliding plate. The L-shaped support rods and the sliding plate are connected by torsion springs. A swing rod is rotatably mounted on the surface of the L-shaped support rod. The end of the swing rod away from the L-shaped support rod is rotatably connected to the linkage slider. The linkage slider is slidably connected to the sliding plate. It also includes a limiting block mounted on the mounting platform that cooperates with the linkage slider. Counter-pressure mechanism: In cooperation with the limiting mechanism, it drives the L-shaped support rod to extend and support the stainless steel cylinder; Positioning mechanism: Supports the stainless steel cylinder in conjunction with the locking mechanism; Moving mechanism: used to drive the stainless steel cylinder to move vertically; Rotating mechanism: used to change the posture of the stainless steel cylinder.

[0007] Furthermore, the counter-pressure mechanism includes a counter-pressure frame that passes through and is slidably connected to the moving mechanism. The surface of the counter-pressure frame is connected to the moving mechanism via a compression spring. A sliding column is fixedly installed on the surface of the counter-pressure frame. The mechanism also includes a rotating cylinder that is rotatably connected to the moving mechanism. A spiral groove that cooperates with the sliding column is opened on the surface of the rotating cylinder. A linkage rotating cylinder is fixedly installed on the surface of the rotating cylinder. A rotating plate is fixedly installed on the surface of the linkage rotating cylinder. Four thrust grooves are opened on the rotating plate. Each thrust groove cooperates with a thrust column fixedly installed on the sliding plate.

[0008] Furthermore, the limiting mechanism includes a rotating toothed cylinder fixedly mounted on the rotating cylinder, the rotating toothed cylinder meshing with the limiting ratchet cylinder, the limiting ratchet cylinder being slidably connected to the moving mechanism, and two connecting rods fixedly mounted on the surface of the limiting ratchet cylinder, the connecting rods passing through the moving mechanism and being slidably connected to the moving mechanism, and a connecting block fixedly mounted on the end of the connecting rod away from the limiting ratchet cylinder, the connecting block being connected to the output end of an external driving cylinder.

[0009] Furthermore, the positioning mechanism includes a positioning gear fixedly mounted on the rotating drum, which meshes with a ratchet plate. The surface of the ratchet plate has four positioning grooves. It also includes four movable frames slidably connected to the moving mechanism. Each movable frame has a positioning slide post fixedly mounted on it, which cooperates with the positioning groove. A positioning rod is slidably mounted inside the movable frame. The positioning rod is connected to the inner wall of the movable frame through a telescopic spring. A positioning rubber block is fixedly mounted on the surface of the positioning rod. Four positioning rubber blocks are fixedly mounted on the surface of the ratchet plate. Each positioning rubber block passes through the rotating disk and is slidably connected to the rotating disk. The rotating disk is provided with the same positioning grooves, positioning slide posts, movable frames, positioning rods, telescopic springs, and positioning rubber blocks as the ratchet plate. The surface of the rotating disk is connected to the moving mechanism through a return spring.

[0010] Furthermore, the locking mechanism includes two arc-shaped grooves formed on the ratchet plate, each arc-shaped groove having ratchet teeth on its inner wall. The ratchet teeth on the arc-shaped groove mesh with a fixed gear, which is fixedly mounted on the moving mechanism. It also includes a limiting block that is slidably connected to the ratchet plate. The surface of the limiting block is connected to the output end of a limiting cylinder, which is fixedly mounted on the moving mechanism.

[0011] Furthermore, the moving mechanism includes two fixed slides fixedly mounted on the mounting platform. Each fixed slide is slidably connected to a moving slider, and the moving slider is connected to an external driving unit. A rotating mechanism passes through the moving slider and is rotatably connected to the rotating mechanism. A rotating block is fixedly mounted at the output end of the rotating mechanism. A cylindrical rod is fixedly mounted on the surface of the rotating block. A connecting circular plate is fixedly mounted on the surface of the cylindrical rod. The surface of the cylindrical rod is connected to the sliding circular plate through a connecting spring. The sliding circular plate is slidably connected to the cylindrical rod. A counter-pressure frame passes through the connecting circular plate and is slidably connected to the connecting circular plate. The surface of the counter-pressure frame is connected to the connecting circular plate through a compression spring. The sliding plate and the moving frame are both slidably connected to the connecting circular plate. A rotating cylinder is rotatably connected to the cylindrical rod. A limiting ratchet cylinder is slidably connected to the cylindrical rod. A connecting rod passes through the sliding circular plate and is slidably connected to the sliding circular plate. The surface of the rotating disk is connected to the sliding circular plate through a return spring, and the moving frame on the rotating disk is slidably connected to the sliding circular plate. A fixed gear and a limiting cylinder are both fixedly mounted on the connecting circular plate.

[0012] Furthermore, the rotating mechanism includes a rotating motor fixedly mounted on the movable slider, the output end of the rotating motor passing through the movable slider and rotatably connected to the movable slider, a rotating shaft fixedly mounted on the output end of the rotating motor, and a rotating block fixedly mounted on the surface of the rotating shaft.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Under the action of the reaction force of the counter-pressure table, the counter-pressure mechanism is driven to move vertically upward. At this time, the movement of the counter-pressure mechanism, in cooperation with the positioning mechanism, positions and fixes the inner wall of the stainless steel cylinder, thereby achieving the purpose of fixing and shaping the stainless steel cylinder and avoiding local deformation caused by the gravity of the stainless steel cylinder in the later stage.

[0014] 2. The present invention uses the limiting block to restrict the linkage slider from continuing to slide with the sliding plate. At this time, the swinging action of the swing rod drives the L-shaped support rod to rotate, so that one end of the L-shaped support rod abuts against the circumference of the bottom end of the stainless steel cylinder, thereby achieving the purpose of automatically supporting the stainless steel cylinder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks provided in an embodiment of the present invention. Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram at point A; Figure 4 For the present invention Figure 2 A magnified structural diagram at point B; Figure 5 For the present invention Figure 2 A magnified structural diagram at point C; Figure 6 This is another cross-sectional view of the automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks according to the present invention. Figure 7 For the present invention Figure 6 A magnified structural diagram at point D; Figure 8 This is an exploded structural diagram of some parts of the automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks according to the present invention. Figure 9 For the present invention Figure 8 A magnified structural diagram at point E; Figure 10 For the present invention Figure 8 A magnified structural diagram at point F; Figure 11 For the present invention Figure 8 A magnified structural diagram at point G.

[0016] In the attached diagram: 1. Main frame; 101. Mounting platform; 102. Counterpressure platform; 103. Support plate; 2. Support mechanism; 201. L-shaped support rod; 202. Sliding plate; 203. Torsion spring; 204. Swing rod; 205. Linkage slider; 206. Limiting block; 3. Counterpressure mechanism; 301. Counterpressure frame; 302. Compression spring; 303. Slide column; 304. Rotating cylinder; 305. Spiral groove; 306. Linkage rotating cylinder; 307. Rotating plate; 308. Thrust groove; 309. Thrust column; 4. Limiting mechanism; 401. Rotating gear cylinder; 402. Limiting ratchet cylinder; 403. Connecting rod; 404. Connecting block; 5. Positioning mechanism; 501. 502. Positioning gear; 503. Racket plate; 504. Positioning groove; 505. Positioning slide column; 506. Moving frame; 507. Positioning rod; 508. Telescopic spring; 509. Positioning rubber block; 510. Synchronizing rod; 511. Rotating disk; 52. Return spring; 6. Locking mechanism; 601. Arc-shaped slide; 602. Fixed gear; 603. Limiting block; 604. Limiting cylinder; 7. Moving mechanism; 701. Moving slider; 702. Fixed slide; 703. Rotating block; 704. Cylindrical rod; 705. Connecting plate; 706. Connecting spring; 707. Sliding plate; 8. Rotating mechanism; 801. Rotating motor; 802. Rotating shaft. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in one embodiment, an automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks is proposed, the device comprising: Main frame 1: It is provided with a mounting platform 101, and a counter-pressure platform 102 and a support plate 103 for placing stainless steel cylinders are fixedly installed on the surface of the mounting platform 101. Support mechanism 2 includes four L-shaped support rods 201 mounted on the mounting platform 101 for supporting the stainless steel cylinder. The L-shaped support rods 201 are rotatably connected to the sliding plate 202. The L-shaped support rods 201 and the sliding plate 202 are connected by a torsion spring 203. A swing rod 204 is rotatably mounted on the surface of the L-shaped support rods 201. The end of the swing rod 204 away from the L-shaped support rods 201 is rotatably connected to the linkage slider 205. The linkage slider 205 is slidably connected to the sliding plate 202. It also includes a limiting block 206 mounted on the mounting platform 101 and cooperating with the linkage slider 205. Counter-pressure mechanism 3: Through cooperation with the limiting mechanism 4, it drives the L-shaped support rod 201 to extend out and support the stainless steel cylinder; Positioning mechanism 5: Supports the stainless steel cylinder in cooperation with locking mechanism 6; Moving mechanism 7: Used to drive the stainless steel cylinder to move vertically; Rotating mechanism 8: Used to change the posture of the stainless steel cylinder.

[0020] In practical applications, when welding of stainless steel cylinders is required, such as... Figure 1 and Figure 2As shown, the stainless steel cylinder is placed vertically on the support plate 103. The movement of the moving mechanism 7 drives the L-shaped support rod 201 to move vertically downward. The L-shaped support rod 201 passes through the interior of the stainless steel cylinder and approaches the counter-pressure table 102. Because of the through hole in the support plate 103, the counter-pressure mechanism 3 passes through the support plate 103 and acts on the counter-pressure table 102. As the moving mechanism 7 continues to drive the L-shaped support rod 201 downward, the counter-pressure mechanism 3 presses against the counter-pressure table 102. Figure 8 As shown, under the reaction force of the counter-pressure table 102, the counter-pressure mechanism 3 is driven to move vertically upward, as... Figure 3 , Figure 7 and Figure 11 As shown, at this time, the movement of the counter-pressure mechanism 3, in cooperation with the positioning mechanism 5, positions and fixes the inner wall of the stainless steel cylinder, thereby achieving the purpose of fixing and shaping the stainless steel cylinder and preventing local deformation caused by the gravity of the stainless steel cylinder later. After the fixing and shaping of the stainless steel cylinder is completed, as shown... Figure 3 As shown, under the continued action of the counter-pressure mechanism 3, the sliding plate 202 moves away from the central axis of the stainless steel cylinder. Simultaneously, when the L-shaped support rod 201 approaches the bottom edge of the stainless steel cylinder, the limiting block 206 restricts the linkage slider 205 from continuing to slide with the sliding plate 202. At this time, under the swinging action of the swing rod 204, the L-shaped support rod 201 rotates, causing one end of the L-shaped support rod 201 to abut against the circumference of the bottom of the stainless steel cylinder, thus achieving automatic support for the stainless steel cylinder. After the moving mechanism 7 stops moving, it reverses its movement. Figure 7 and Figure 10 As shown, due to the limiting effect of the limiting mechanism 4 and the locking mechanism 6, the positioning mechanism 5 and the L-shaped support rod 201 cannot be reset. At this time, the support of the L-shaped support rod 201 drives the stainless steel cylinder to move vertically upward. When it rises to a certain height, the rotating mechanism 8 drives the stainless steel cylinder to revolve, causing the stainless steel cylinder to move from a vertical state to a horizontal state, thereby automatically changing the posture of the stainless steel cylinder to facilitate welding. At the same time, the locking mechanism 6 releases the limiting effect on the counter-pressure mechanism 3, allowing the counter-pressure mechanism 3 to reset. At this time, the L-shaped support rod 201 resets, preventing the L-shaped support rod 201 from affecting the welding of the stainless steel cylinder. After the welding is completed, the limiting mechanism 4 releases the limiting effect on the positioning mechanism 5, thereby canceling the support and positioning of the stainless steel cylinder by the positioning mechanism 5. Then, the device is removed from the stainless steel cylinder, thus completing the entire welding operation.

[0021] like Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, in a preferred embodiment of the present invention, the counter-pressure mechanism 3 includes a counter-pressure frame 301 that passes through and is slidably connected to the moving mechanism 7. The surface of the counter-pressure frame 301 is connected to the moving mechanism 7 via a compression spring 302. A sliding column 303 is fixedly installed on the surface of the counter-pressure frame 301. The mechanism also includes a rotating cylinder 304 that is rotatably connected to the moving mechanism 7. A spiral groove 305 that cooperates with the sliding column 303 is opened on the surface of the rotating cylinder 304. A linkage rotating cylinder 306 is fixedly installed on the surface of the rotating cylinder 304. A rotating plate 307 is fixedly installed on the surface of the linkage rotating cylinder 306. Four thrust grooves 308 are opened on the rotating plate 307. Each thrust groove 308 cooperates with a thrust column 309 fixedly installed on the sliding plate 202.

[0022] In practical applications, when the moving mechanism 7 drives the L-shaped support rod 201 to move vertically downwards, as in the embodiments of the present invention... Figure 2 and Figure 8 As shown, at this time, the moving mechanism 7 drives the counter-pressure frame 301 to move vertically downwards synchronously. After the counter-pressure frame 301 contacts the counter-pressure table 102, it is driven to move vertically upwards under the reaction force of the counter-pressure table 102, which in turn drives the sliding column 303 to move upwards synchronously, as shown. Figure 7 As shown, the rotating cylinder 304 is driven to rotate by the cooperation of the sliding column 303 and the spiral groove 305. The rotation of the rotating cylinder 304 drives the rotating plate 307 to rotate synchronously through the linkage rotating cylinder 306. The rotation of the linkage rotating cylinder 306 positions and fixes the stainless steel cylinder through the positioning mechanism 5. After the stainless steel cylinder is fixed, as shown... Figure 3 and Figure 8 As shown, at this time, the rotation of the rotating plate 307 drives the thrust column 309 to move away from the central axis of the stainless steel cylinder through the cooperation of the thrust groove 308 and the thrust column 309, which in turn drives the sliding plate 202 to move away from the central axis of the stainless steel cylinder, and supports the bottom edge of the stainless steel cylinder through the movement of the support mechanism 2.

[0023] like Figure 4 and Figure 5 As shown, in another preferred embodiment of the present invention, the limiting mechanism 4 includes a rotating toothed cylinder 401 fixedly mounted on the rotating cylinder 304, the rotating toothed cylinder 401 meshing with a limiting ratchet cylinder 402, the limiting ratchet cylinder 402 being slidably connected to the moving mechanism 7, two connecting rods 403 being fixedly mounted on the surface of the limiting ratchet cylinder 402, the connecting rods 403 passing through the moving mechanism 7 and being slidably connected to the moving mechanism 7, and a connecting block 404 being fixedly mounted on one end of the connecting rod 403 away from the limiting ratchet cylinder 402, the connecting block 404 being connected to the output end of an external driving cylinder.

[0024] In practical application, during the initial support of the stainless steel cylinder, the rotation of the rotating cylinder 304 drives the rotating gear cylinder 401 to rotate synchronously. The ratchet action of the limiting ratchet cylinder 402 prevents the rotating gear cylinder 401 from resetting. After the stainless steel cylinder is welded, as... Figure 5 As shown, at this time, the movement of the externally driven cylinder drives the connecting block 404 to move vertically upward, as... Figure 4 As shown, the connecting rod 403 drives the limiting ratchet cylinder 402 to move vertically upward. At this time, the limiting ratchet cylinder 402 disengages from the rotating toothed cylinder 401, so that the counter-pressure mechanism 3 automatically resets under the elastic potential energy of the compression spring 302, thereby facilitating the removal of the device from the welded stainless steel cylinder.

[0025] like Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, in another preferred embodiment of the present invention, the positioning mechanism 5 includes a positioning gear 501 fixedly mounted on the linkage drum 306, the positioning gear 501 meshing with a ratchet plate 502, the surface of the ratchet plate 502 having four positioning grooves 503, and also includes four moving frames 505 slidably connected to the moving mechanism 7, each moving frame 505 having a positioning slide post 504 fixedly mounted on it that cooperates with the positioning groove 503, and a positioning rod 506 slidably mounted inside the moving frame 505, the positioning rod 506 being connected by a telescopic spring 507. The positioning rod 506 is fixedly mounted on the surface of the positioning rod 506, which is connected to the inner wall of the moving frame 505. Four positioning rubber blocks 508 are fixedly mounted on the surface of the ratchet plate 502. Each positioning rubber block 508 passes through the rotating disk 510 and is slidably connected to the rotating disk 510. The rotating disk 510 is provided with the same positioning groove 503, positioning slide post 504, moving frame 505, positioning rod 506, telescopic spring 507 and positioning rubber block 508 as the ratchet plate 502. The surface of the rotating disk 510 is connected to the moving mechanism 7 through the return spring 511.

[0026] In practical applications, when the linkage drum 306 rotates, as in the embodiments of the present invention... Figure 7 As shown, at this time, the positioning gear 501 drives the ratchet plate 502 to rotate, as... Figure 3 and Figure 8 As shown, the rotation of the ratchet plate 502, through the cooperation of the positioning groove 503 and the positioning slide 504, drives the moving frame 505 to move away from the central axis of the stainless steel cylinder, thereby driving the positioning rod 506 to move away from the central axis of the stainless steel cylinder. At this time, the movement of the positioning rod 506 causes the positioning rubber block 508 to press against the inner wall of the stainless steel cylinder, as shown. Figure 6As shown, the rotation of the ratchet plate 502 drives the rotating disk 510 to rotate synchronously via the synchronizing rod 509. The rotation of the rotating disk 510 drives the positioning rubber block 508 to press against the inner wall of the stainless steel cylinder via the positioning slide 504, the moving frame 505, and the positioning rod 506, thereby achieving the purpose of positioning the stainless steel cylinder. It should be noted that the trajectory radius of the positioning groove 503 increases at a greater rate than that of the thrust groove 308. Therefore, when the counter-pressure mechanism 3 rotates, the stainless steel cylinder is first positioned by the positioning mechanism 5, and then supported by the support mechanism 2. When the support mechanism 2 supports the stainless steel cylinder, the continued movement of the positioning mechanism 5 increases the stability of the support for the stainless steel cylinder by compressing the telescopic spring 507.

[0027] like Figure 5 , Figure 8 , Figure 9 and Figure 10 As shown, in another preferred embodiment of the present invention, the locking mechanism 6 includes two arc-shaped grooves 601 formed on the ratchet plate 502, each arc-shaped groove 601 having ratchet teeth on its inner wall, the ratchet teeth on the arc-shaped groove 601 meshing with a fixed gear 602, the fixed gear 602 being fixedly mounted on the moving mechanism 7, and also includes a limiting block 603 slidably connected to the ratchet plate 502, the surface of the limiting block 603 being connected to the output end of a limiting cylinder 604, the limiting cylinder 604 being fixedly mounted on the moving mechanism 7.

[0028] In practical applications, after the horizontal orientation of the stainless steel cylinder is adjusted by the rotation of the rotating mechanism 8, as shown in the embodiments of the present invention... Figure 8 and Figure 9 As shown, at this time, the limit cylinder 604 starts to operate. The operation of the limit cylinder 604 drives the limit block 603 to move vertically downward, which in turn drives the ratchet plate 502 to move vertically downward, as shown. Figure 10 As shown, the movement of the ratchet plate 502 causes the arc-shaped groove 601 to disengage from the fixed gear 602, and simultaneously causes the positioning gear 501 to disengage from the ratchet plate 502, as... Figure 5 As shown, at this time, the positioning mechanism 5 rotates and resets under the action of the reset spring 511, thereby driving the support mechanism 2 to reset, which facilitates the docking of the stainless steel cylinder.

[0029] like Figure 1 and Figure 4As shown, in another preferred embodiment of the present invention, the moving mechanism 7 includes two fixed slide rails 702 fixedly mounted on the mounting platform 101. Each fixed slide rail 702 is slidably connected to a moving slider 701, and the moving slider 701 is connected to an external driving unit. A rotating mechanism 8 passes through the moving slider 701 and is rotatably connected to the rotating mechanism 8. A rotating block 703 is fixedly mounted at the output end of the rotating mechanism 8. A cylindrical rod 704 is fixedly mounted on the surface of the rotating block 703. A connecting circular plate 705 is fixedly mounted on the surface of the cylindrical rod 704. The surface of the cylindrical rod 704 is connected to the sliding circular plate 707 through a connecting spring 706. The sliding circular plate 707 is slidably connected to the cylindrical rod 704. The pressure frame 301 passes through the connecting circular plate 705 and is slidably connected to the connecting circular plate 705. The surface of the pressure frame 301 is connected to the connecting circular plate 705 through the compression spring 302. The sliding plate 202 and the moving frame 505 are both slidably connected to the connecting circular plate 705. The rotating cylinder 304 is rotatably connected to the cylindrical rod 704. The limiting ratchet cylinder 402 is slidably connected to the cylindrical rod 704. The connecting rod 403 passes through the sliding circular plate 707 and is slidably connected to the sliding circular plate 707. The surface of the rotating disk 510 is connected to the sliding circular plate 707 through the return spring 511, and the moving frame 505 on the rotating disk 510 is slidably connected to the sliding circular plate 707. The fixed gear 602 and the limiting cylinder 604 are both fixedly installed on the connecting circular plate 705.

[0030] In practical applications, when the stainless steel cylinder moves, as in the embodiments of the present invention... Figure 1 As shown, at this time, the external drive unit drives the movable slider 701 to move vertically downward, which in turn drives the rotating block 703 to move vertically downward through the rotating mechanism 8. The movement of the rotating block 703 drives the connecting circular plate 705 to move vertically downward through the cylindrical rod 704. At this time, when the sliding circular plate 707 contacts the stainless steel cylinder, as... Figure 4 As shown, the connecting spring 706 causes the connecting disc 705 to continue moving downwards. When it reaches the counter-pressure table 102, the counter-pressure table 102's reaction force drives the counter-pressure mechanism 3 to move. The counter-pressure mechanism 3 and the positioning mechanism 5 then fix and shape the stainless steel cylinder. At the same time, the counter-pressure mechanism 3 and the support mechanism 2 support the stainless steel cylinder. At this time, the external drive unit reverses its movement, causing the sliding block 701 to move vertically upwards, which in turn drives the stainless steel cylinder to move vertically upwards, thereby achieving the purpose of automatically lifting the stainless steel cylinder.

[0031] like Figure 1As shown, in another preferred embodiment of the present invention, the rotating mechanism 8 includes a rotating motor 801 fixedly mounted on the movable slider 701. The output end of the rotating motor 801 passes through the movable slider 701 and is rotatably connected to the movable slider 701. A rotating shaft 802 is fixedly mounted on the output end of the rotating motor 801, and a rotating block 703 is fixedly mounted on the surface of the rotating shaft 802.

[0032] In practical applications, the embodiments of the present invention, such as Figure 1 As shown, after the stainless steel cylinder is lifted by the movement of the moving mechanism 7, the rotating motor 801 drives the rotating shaft 802 to rotate, which in turn drives the stainless steel cylinder to rotate through the rotating block 703, so that the stainless steel cylinder rotates from a vertical state to a horizontal state, thereby achieving the purpose of automatically changing the posture of the stainless steel cylinder.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks, characterized in that, The device includes: Main frame (1): It is provided with a mounting platform (101), and a counter-pressure platform (102) and a support plate (103) for placing stainless steel cylinders are fixedly installed on the surface of the mounting platform (101). Support mechanism (2): includes four L-shaped support rods (201) mounted on the mounting platform (101) for supporting the stainless steel cylinder. The L-shaped support rods (201) are rotatably connected to the sliding plate (202). The L-shaped support rods (201) and the sliding plate (202) are connected by a torsion spring (203). A swing rod (204) is rotatably mounted on the surface of the L-shaped support rods (201). The end of the swing rod (204) away from the L-shaped support rods (201) is rotatably connected to the linkage slider (205). The linkage slider (205) is slidably connected to the sliding plate (202). It also includes a limiting block (206) mounted on the mounting platform (101) that cooperates with the linkage slider (205). Counter-pressure mechanism (3): Through cooperation with the limiting mechanism (4), the L-shaped support rod (201) extends out to support the stainless steel cylinder; Positioning mechanism (5): Supports the stainless steel cylinder in cooperation with locking mechanism (6); Moving mechanism (7): used to drive the stainless steel cylinder to move vertically; Rotating mechanism (8): used to change the posture of the stainless steel cylinder; The counter-pressure mechanism (3) includes a counter-pressure frame (301) that passes through the moving mechanism (7) and is slidably connected to the moving mechanism (7). The surface of the counter-pressure frame (301) is connected to the moving mechanism (7) through a compression spring (302). A sliding column (303) is fixedly installed on the surface of the counter-pressure frame (301). The mechanism also includes a rotating cylinder (304) that is rotatably connected to the moving mechanism (7). A spiral groove (305) that cooperates with the sliding column (303) is opened on the surface of the rotating cylinder (304). A linkage rotating cylinder (306) is fixedly installed on the surface of the rotating cylinder (304). A rotating plate (307) is fixedly installed on the surface of the linkage rotating cylinder (306). Four thrust grooves (308) are opened on the rotating plate (307). Each thrust groove (308) cooperates with a thrust column (309) fixedly installed on the sliding plate (202). The limiting mechanism (4) includes a rotating gear cylinder (401) fixedly installed on the rotating cylinder (304), the rotating gear cylinder (401) meshing with the limiting ratchet cylinder (402), the limiting ratchet cylinder (402) being slidably connected to the moving mechanism (7), two connecting rods (403) being fixedly installed on the surface of the limiting ratchet cylinder (402), the connecting rods (403) passing through the moving mechanism (7) and being slidably connected to the moving mechanism (7), and a connecting block (404) being fixedly installed at the end of the connecting rod (403) away from the limiting ratchet cylinder (402), the connecting block (404) being connected to the output end of the external driving cylinder; The positioning mechanism (5) includes a positioning gear (501) fixedly mounted on the linkage drum (306), which meshes with a ratchet plate (502). The surface of the ratchet plate (502) is provided with four positioning grooves (503). It also includes four moving frames (505) slidably connected to the moving mechanism (7). Each moving frame (505) is fixedly mounted with a positioning slide post (504) that cooperates with the positioning groove (503). A positioning rod (506) is slidably mounted inside the moving frame (505). The positioning rod (506) is connected to the inner wall of the moving frame (505) through a telescopic spring (507). Positioning rubber blocks (508) are fixedly installed on the surface of the positioning rod (506), and four positioning rubber blocks (508) are fixedly installed on the surface of the ratchet plate (502). Each positioning rubber block (508) passes through the rotating disk (510) and is slidably connected to the rotating disk (510). The rotating disk (510) is provided with the same positioning groove (503), positioning slide (504), moving frame (505), positioning rod (506), telescopic spring (507) and positioning rubber block (508) as the ratchet plate (502). The surface of the rotating disk (510) is connected to the moving mechanism (7) through the return spring (511). The locking mechanism (6) includes two arc-shaped grooves (601) opened on the ratchet plate (502). Each arc-shaped groove (601) has ratchet teeth on its inner wall. The ratchet teeth on the arc-shaped groove (601) mesh with the fixed gear (602). The fixed gear (602) is fixedly installed on the moving mechanism (7). It also includes a limiting block (603) that is slidably connected to the ratchet plate (502). The surface of the limiting block (603) is connected to the output end of the limiting cylinder (604). The limiting cylinder (604) is fixedly installed on the moving mechanism (7).

2. The automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks according to claim 1, characterized in that, The moving mechanism (7) includes two fixed slide rails (702) fixedly installed on the mounting platform (101). Each fixed slide rail (702) is slidably connected to the moving slider (701), and the moving slider (701) is connected to an external driving unit. A rotating mechanism (8) passes through the moving slider (701) and is rotatably connected to the rotating mechanism (8). A rotating block (703) is fixedly installed at the output end of the rotating mechanism (8). A cylindrical rod (704) is fixedly installed on the surface of the rotating block (703). A connecting circular plate (705) is fixedly installed on the surface of the cylindrical rod (704). The surface of the cylindrical rod (704) is connected to the sliding circular plate (707) through a connecting spring (706). The sliding circular plate (707) is slidably connected to the cylindrical rod (704). A counter-pressure frame (301) passes through the connecting circular plate (705). 5) It is slidably connected to the connecting circular plate (705), the surface of the counter-pressure frame (301) is connected to the connecting circular plate (705) through the compression spring (302), the sliding plate (202) and the moving frame (505) are both slidably connected to the connecting circular plate (705), the rotating cylinder (304) is rotatably connected to the cylindrical rod (704), the limiting ratchet cylinder (402) is slidably connected to the cylindrical rod (704), the connecting rod (403) passes through the sliding circular plate (707) and is slidably connected to the sliding circular plate (707), the surface of the rotating disk (510) is connected to the sliding circular plate (707) through the reset spring (511), and the moving frame (505) on the rotating disk (510) is slidably connected to the sliding circular plate (707), the fixed gear (602) and the limiting cylinder (604) are both fixedly installed on the connecting circular plate (705).

3. The automated internal support positioning device for circumferential welding of stainless steel rocket propellant tanks according to claim 2, characterized in that, The rotating mechanism (8) includes a rotating motor (801) fixedly mounted on the movable slider (701). The output end of the rotating motor (801) passes through the movable slider (701) and is rotatably connected to the movable slider (701). A rotating shaft (802) is fixedly mounted on the output end of the rotating motor (801), and a rotating block (703) is fixedly mounted on the surface of the rotating shaft (802).

Images