CN117533995B - A hoisting operation positioning device for hull frame welding - Google Patents

Abstract

The invention provides a hoisting operation positioning device for welding a hull framework, and belongs to the technical field of hoisting operation of hull frameworks. The hull skeleton welded hoisting operation positioner includes: the walking frame comprises a frame body and walking wheels arranged at the bottom of the frame body, and support legs supported on the ground are arranged on the frame body; the sliding frame is arranged on two sides of the top of the frame body and is slidably arranged on the frame body in the width direction; the support beam is arranged on the front side and the rear side of the top of the carriage, and the top end of the support beam is provided with a support wheel; the calibrating rods are arranged corresponding to each supporting beam, the outer side ends of the calibrating rods are rotatably arranged at the top ends of the supporting beams, the inner side ends of the calibrating rods are provided with inner top wheels, and the distance between the inner side ends of two calibrating rods opposite to each other in the width direction of the travelling frame is matched with the width of a longitudinal beam at the bottom of the ship framework when the two calibrating rods are in a horizontal state; and the elastic supporting rod is arranged on the supporting beam. The invention has the advantages of high safety and convenient correction and positioning of the hull skeleton.

Description

A hoisting operation positioning device for hull frame welding

Technical Field

The invention relates to the technical field of ship frame hoisting operations, and in particular to a hoisting operation positioning device for welding a ship frame.

Background technique

At present, in the hull manufacturing process, the hull frame is usually welded in sections and then installed and spliced through hoisting operations. During the installation and splicing process of the hull frame hoisting operation, since the installation foundation has been pre-formed and fixed, in order to align the bottom longitudinal beam of the hull frame with the installation foundation and level the hull frame before welding, multiple workers are required to use ropes to pull the four corners of the hoisted hull frame to adjust the direction and centering of the hull frame. This process requires the cooperation of multiple workers, which is very troublesome and laborious. In addition, the controllability of manual pulling is weak, and repeated pulling and measurement are required, which greatly reduces the efficiency of hull frame welding and hoisting, and there are major safety hazards.

Summary of the invention

In order to solve the above technical problems, the present invention proposes a hoisting operation positioning device for hull frame welding.

The technical solution of the present invention is achieved in this way:

A hoisting operation positioning device for hull frame welding, comprising:

A walking frame, comprising a frame body and walking wheels arranged at the bottom of the frame body, wherein the frame body is provided with supporting legs supported on the ground;

A slide, one slide is provided on each side of the top of the frame, and the slide is slidably mounted on the frame in the width direction;

A support beam, one of which is disposed on both the front and rear sides of the top of the slide, and a support wheel is disposed on the top of the support beam;

A calibration rod is provided corresponding to each support beam, and the outer end of the calibration rod is rotatably mounted on the top of the support beam, the inner end of the calibration rod is installed with an inner top wheel, and the distance between the inner ends of the two calibration rods opposite to each other in the width direction of the walking frame is adapted to the width of the longitudinal beam at the bottom of the hull frame when they are in a horizontal state;

An elastic support rod is installed on the support beam, and the extended end of the elastic support rod is connected to the calibration rod through a connecting rod. Under the action of the elastic support rod, the calibration rod is in an inclined state with the inner end facing upward in the initial state.

Furthermore, the support beam includes two first beam bodies relatively distributed in the front-to-back direction and a second beam body fixedly arranged between the bottom ends of the two first beam bodies, and the two first beam bodies are spaced apart, and lifting grooves are provided on the opposite sides of the two first beam bodies, and an upper lifting slider slidably matched with the lifting groove is provided on the top of the extended end of the elastic support rod, a lower hinge seat is installed on the inner side of the upper lifting slider, and the bottom end of the connecting rod is rotatably connected to the lower hinge seat, and one support wheel is provided at the top end of the two first beam bodies on the opposite sides, and the outer end of the calibration rod is rotatably installed between the top ends of the two first beam bodies.

Furthermore, a lower lifting slider which slides with the lifting slot is provided at the bottom end of the elastic support rod, a lifting screw is threaded through the lower lifting slider, the lifting screw is rotatably mounted on the second beam body, and when the lower lifting slider is located at the lowest position in the lifting slot, the calibration rod is in a state of being stored in the inner side of the support beam.

Furthermore, transverse slide rails are provided on the front and rear sides of the top of the frame body, and the bottom end of the slide is slidably matched with the transverse slide rails. The two slides are threadedly connected with transverse screw rods rotatably installed on the frame body, and the bottom end of the slide is provided with a locking bolt, and the frame body is provided with a plurality of locking holes. The locking bolts fix the slide in the adjusted position by connecting the locking holes.

Furthermore, the calibration rod includes a first rod body and a second rod body, the outer end of the first rod body is rotatably connected between the top ends of the two first beam body parts, the outer end of the second rod body can be slidably inserted into the inner end of the first rod body, the inner top wheel is rotatably installed on the inner end of the second rod body, the outer sleeve of the first rod body is provided with a pipe sleeve, the bottom end of the pipe sleeve is installed with an upper hinge seat, and the top end of the connecting rod is rotatably connected to the upper hinge seat, and a rod length adjustment structure for adjusting the length of the calibration rod is provided between the first rod body and the second rod body.

Further, the rod length adjustment structure includes a fixed ratchet bar and a movable ratchet bar, wherein two fixed ratchet bars are provided on the surface of the second rod body, and the two fixed ratchet bars are symmetrically distributed, and two movable ratchet bars are provided on the first rod body, and the two movable ratchet bars are symmetrically distributed, and the movable ratchet bar is installed on the first rod body in a radially displaceable manner, and a top plate is provided on the outer side of the movable ratchet bar, and the top plate is installed on the first rod body in a radially displaceable manner, and the top plate is displaced inwardly so that the movable ratchet bar engages with the fixed ratchet bar and locks the second rod body.

Further, the movable ratchet bar includes a sleeve plate, a sleeve groove, teeth and an extending spring, wherein the sleeve plate is slidably mounted on the first rod body, and support springs are connected to both ends of the sleeve plate, the sleeve grooves are equidistantly arranged on the sleeve plate, and one sleeve groove is arranged corresponding to each tooth, the teeth are slidably arranged in the sleeve groove, the extending spring is arranged in the sleeve groove, and the extending spring is used to push the teeth outward, the top plate includes a main plate body and a sub-plate body vertically arranged on the main plate body, and the top plate is displaced inwardly so that the inner end of the sub-plate body abuts against the outer side of the teeth through the sleeve groove to lock the teeth.

Furthermore, a force storage spring is arranged in the first rod body, and the force storage spring is connected to the outer end of the second rod body, for providing the second rod body with elastic force to extend out of the first rod body, and when the auxiliary plate body abuts against the teeth, the teeth are locked in a state of extending out of the sleeve groove, and when the auxiliary plate body moves to the outermost position of the inner cavity of the sleeve groove, the force storage spring makes the second rod body continuously extend out of the first rod body to keep the inner top wheel in contact with the hull frame.

Furthermore, a guide groove is provided on the main body, a guide rod is arranged in the guide groove, a strip groove is provided on a side surface of the main body away from the first rod body, a movable plate that can be displaced along the length direction of the first rod body is arranged in the strip groove, the guide rod is fixedly arranged on the movable plate, and the outer ends of the two movable plates are fixedly connected with a slip ring sleeved outside the first rod body, and a guide structure is arranged between the outer end surface of the slip ring and the support beam, wherein: when the calibration rod is in a state where the inner end is tilted upward, the guide structure makes the movable plate located in the outermost position, and the guide rod supports the sub-plate body on the outer side surface of the tooth through the guide groove; when the calibration rod is in a horizontal state and the inner end is tilted downward, the guide structure makes the movable plate located in the innermost position, and the guide rod separates the sub-plate body from the tooth through the guide groove.

Furthermore, the guide structure includes a track rod and a track plate, the inner end of the track rod is connected to the slip ring, the outer end of the track rod is slidably arranged on the track plate, and the track plate is fixedly installed on the top end of the support beam.

The present invention has the following beneficial effects:

In the process of lowering the hull frame by using a crane, the safety of lifting is improved by supporting the hull frame from the bottom. At the same time, the hull frame is automatically centered by using a calibration rod, which makes the lifting operation of the hull frame more convenient. Compared with the existing technology that relies on multiple workers to use ropes to pull the hull frame from the four corners of the hull frame to adjust the position, it saves time and effort.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the present invention when applied to a hull frame;

FIG2 is an enlarged view of the A portion in FIG1 of the present invention;

FIG3 is an enlarged view of part B in FIG1 of the present invention;

FIG4 is an enlarged view of portion C in FIG1 of the present invention;

FIG5 is an enlarged view of the D portion in FIG1 of the present invention;

FIG6 is an enlarged view of the E portion in FIG1 of the present invention;

Fig. 7 is a schematic diagram of a walking frame of the present invention;

FIG8 is an overall schematic diagram of the slide and the support beam of the present invention;

FIG9 is a schematic diagram of a calibration rod on a support beam according to the present invention;

FIG10 is a schematic diagram of a first rod body of the calibration rod of the present invention after being cut open;

FIG11 is an enlarged view of the F portion in FIG10 of the present invention;

FIG12 is a schematic diagram of the movable ratchet bar and the top plate of the present invention after being cut open;

FIG. 13 is an enlarged view of the G portion in FIG. 12 of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in FIGS. 1 to 13 , the hoisting operation positioning device for hull frame welding provided by the present invention comprises:

The walking frame includes a frame body 1 and walking wheels arranged at the bottom of the frame body 1. The frame body 1 is provided with support legs 2 supported on the ground. During use, the positioning device is moved to the installation position of the hull frame by the walking of the walking frame, and then the support legs 2 are controlled so that the support legs 2 are supported on the ground. At this time, the position of the positioning device as a whole can be adjusted according to the predetermined installation position of the hull frame by the forward and backward movement of the walking frame.

A slide 3, one of which is provided on each side of the top of the frame 1, and the slide 3 is slidably mounted on the frame 1 in the width direction;

A support beam 4 is provided at both the front and rear sides of the top of the slide 3, and a support wheel 5 is provided at the top of the support beam 4;

A calibration rod 6 is provided corresponding to each support beam 4, and the outer end of the calibration rod 6 is rotatably mounted on the top of the support beam 4, and the inner end of the calibration rod 6 is installed with an inner top wheel 7, and the distance between the inner ends of the two calibration rods 6 opposite to each other in the width direction of the walking frame is adapted to the width of the longitudinal beam at the bottom of the hull frame when they are in a horizontal state;

The elastic support rod 8 is installed on the support beam 4, and the extended end of the elastic support rod 8 is connected to the calibration rod 6 through a connecting rod 9. Under the action of the elastic support rod 8, the connecting rod 9 makes the calibration rod 6 in an inclined state with the inner end facing upward in the initial state.

By making the above settings, the positioning device is moved to the preset installation position of the hull frame, and then the device is supported and fixed by the support legs 2. At this time, the elastic support rod 8 uses its elastic force and connects the connecting rod 9 to make the calibration rod 6 tilted upward at the inner end. At this time, the distance between the two calibration rods 6 is greater than the width of the bottom longitudinal beam of the hull frame. Then adjust the position of the slide 3 on the frame 1 so that the two slides 3 are symmetrically distributed on the ground with the installation foundation connected to the longitudinal beam of the hull frame.

During the process of lowering the hull frame by the crane, the lowering position of the hull frame can be assisted in controlling according to the positions of the inner ends of the calibration rods 6 on both sides, so as to ensure that after the hull frame is lowered, the longitudinal beams at the bottom can enter between the inner ends of the calibration rods 6 on both sides. Afterwards, the crane is used to continue lowering the hull frame, and the inner top wheels 7 on the calibration rods 6 rotate downward by contacting the inclined surfaces on both sides of the bottom of the hull frame and receiving the pressure of the hull frame. While the calibration rod 6 rotates downward with its inner end, the two inner top wheels 7 can realize the automatic centering function of the hull frame by squeezing the hull frame inward from both sides at the same time, and calibrate the hull frame to a state where the longitudinal beams are located directly above the ground installation foundation. During this process, the crane operator controls the crane's boom so that the crane's boom is adjusted to a position suitable for the centered hull frame.

After that, the hull frame is continued to be lowered, and the calibration rod 6 is subjected to pressure so that its inner end continues to rotate downward, and the hull frame will be supported by the support wheel 5. Finally, the support beam 4 is controlled to descend, and the support beam 4 holds the hull frame and cooperates with the pulling force of the crane on the hull frame to improve the safety and stability of the hull frame when it is lowered and aligned. In addition, after the longitudinal beam at the bottom of the hull frame contacts the top of the installation foundation, the state of the hull frame is directly measured using a level ruler, and then the support beams 4 on both sides are raised and lowered respectively to achieve the leveling operation of the hull frame. In addition, if there is an error in the installation position of the hull frame, the position of the hull frame can be directly adjusted by the left and right displacement of the slide 3. In this way, the welding accuracy and safety of the hull frame are greatly improved.

The support beam 4 includes two first beam bodies 4-1 that are relatively distributed in the front-to-back direction and a second beam body 4-2 that is fixedly arranged between the bottom ends of the two first beam bodies 4-1, and the two first beam bodies 4-1 are spaced apart. A lifting groove 10 is provided on the opposite side of the two first beam bodies 4-1, and an upper lifting slider 11 that slides with the lifting groove 10 is provided at the top of the extended end of the elastic support rod 8. A lower hinge seat is installed on the inner side surface of the upper lifting slider 11, and the bottom end of the connecting rod 9 is rotatably connected to the lower hinge seat. A support wheel 5 is provided at the top of the opposite sides of the two first beam bodies 4-1, and the outer end of the calibration rod 6 is rotatably installed between the top ends of the two first beam bodies 4-1.

When the calibration rod 6 is swung downward under pressure, the upper lifting slide block 11 moves in the lifting slot 10 to improve the stability of the calibration rod 6 during the swing, so that the calibration rod 6 can swing downward stably. Specifically, the second beam body 4-2 is slidably mounted on the slide 3 in the height direction, and a lifting cylinder for controlling the height of the support beam 4 is provided between the second beam body 4-2 and the slide 3.

Furthermore, the bottom end of the elastic support rod 8 is provided with a lower lifting slider 12 that is slidably matched with the lifting groove 10, and a lifting screw 13 is threaded through the lower lifting slider 12. The lifting screw 13 is rotatably installed on the second beam body 4-2, and when the lower lifting slider 12 is located at the lowest position in the lifting groove 10, the calibration rod 6 is stored in the inner side of the support beam 4. The cooperation between the lower lifting slider 12 and the upper lifting slider 11 enables the elastic support rod 8 to stably perform lifting and lowering movements between the two first beam bodies 4-1. The height of the elastic support rod 8 on the support beam 4 can be adjusted by operating the lifting screw 13.

Specifically, by rotating the lifting screw 13 to displace the elastic support rod 8 upward in the support beam 4, the supporting effect of the elastic support rod 8 on the connecting rod 9 can be used to adjust the upward tilt angle of the inner side end of the calibration rod 6 in the initial state. When the upward tilt angle of the inner side end of the calibration rod 6 is larger, the initial distance between the inner side ends of the calibration rod 6 on both sides in the width direction of the clamp body is larger, and it is easier to make the longitudinal beam at the bottom of the hull frame enter the gap between the calibration rods 6 on both sides when the crane lowers the hull frame. By rotating the lifting screw 13 to displace the elastic support rod 8 downward in the support beam 4, the inner side end of the calibration rod 6 can be rotated downward by the pulling force of the elastic support rod 8 on the connecting rod 9, so that the calibration rod 6 can be adjusted to the storage state with the smallest angle between it and the support beam 4.

Among them, transverse slide rails 14 are provided on both the front and rear sides of the top of the frame body 1, and the bottom end of the slide 3 is slidably matched with the transverse slide rails 14. The two slides 3 are threadedly connected with transverse screw rods 15 rotatably mounted on the frame body 1, and the bottom end of the slide 3 is provided with locking bolts 16. The frame body 1 is provided with a plurality of locking holes 17, and the locking bolts 16 fix the slide 3 in the adjusted position by connecting the locking holes 17. Specifically, by rotating the transverse screw rod 15 to make the two slides 3 move relative to each other or move away from each other, the distance between the two slides 3 can be adjusted, and at the same time, the distance between the inner ends of the calibration rods 6 on both sides can also be adjusted to adapt to the width of the longitudinal beams at the bottom end of different hull frames. After the position of the slide 3 is adjusted, the locking bolts 16 and the locking holes 17 can be used to assist the transverse screw rod 15 to better fix the position of the slide 3 in the width direction of the frame body 1. The transverse screw rod 15 is prevented from slipping and better protected.

The calibration rod 6 includes a first rod body 6-1 and a second rod body 6-2, the outer end of the first rod body 6-1 is rotatably connected between the top ends of the two first beam bodies 4-1, the outer end of the second rod body 6-2 can be slidably inserted from the inner end of the first rod body 6-1 into the interior thereof, the inner top wheel 7 is rotatably mounted on the inner end of the second rod body 6-2, the outer sleeve of the first rod body 6-1 is provided with a pipe sleeve, the bottom end of the pipe sleeve is provided with an upper hinge seat, and the top end of the connecting rod 9 is rotatably connected to the upper hinge seat, and a rod length adjustment structure for adjusting the length of the calibration rod 6 is provided between the first rod body 6-1 and the second rod body 6-2. By such a configuration, the length of the calibration rod 6 can be adjusted separately when the position of the slide 3 remains unchanged, that is, when the support wheel 5 is stably supported on the bottom surfaces of both sides of the hull frame according to the actual shape of the hull frame, so as to adjust the distance between the opposite ends of the calibration rod 6 on both sides of the frame 1, so as to better adapt to the different widths of the longitudinal beams at the bottom of the hull frame.

Furthermore, the rod length adjustment structure includes a fixed ratchet bar 18 and a movable ratchet bar 19, wherein two fixed ratchet bars 18 are arranged on the surface of the second rod body 6-2, and the two fixed ratchet bars 18 are symmetrically distributed, and two movable ratchet bars 19 are arranged on the first rod body 6-1, and the two movable ratchet bars 19 are symmetrically distributed, and the movable ratchet bar 19 is installed on the first rod body 6-1 in a radially displaceable manner, and a top plate 20 is arranged on the outer side of the movable ratchet bar 19, and the top plate 20 can be installed on the first rod body 6-1 in a radially displaceable manner, and the top plate 20 moves inward to make the movable ratchet bar 19 mesh with the fixed ratchet bar 18 and lock the second rod body 6-2.

Specifically, the top plate 20 can be operated to move outward on the first rod body, so that the movable ratchet bar 19 is separated from the fixed ratchet bar 18, and the length of the second rod body 6-2 extending from the first rod body 6-1 can be adjusted to achieve the effect of adjusting the length of the calibration rod 6. Afterwards, the top plate 20 can be operated to move inward on the first rod body 6-1 and fixed, so that the movable ratchet bar 19 is engaged with the fixed ratchet bar 18. At this time, the second rod body 6-2 is locked on the first rod body 6-1, so as to achieve the effect of fixing the length of the calibration rod 6.

The movable ratchet bar 19 includes a sleeve plate 19-1, a sleeve groove 19-2, a tooth 19-3 and an extension spring 19-4, wherein the sleeve plate 19-1 is slidably mounted on the first rod body 6-1, and support springs 19-5 are connected to both ends of the sleeve plate 19-1, the sleeve grooves 19-2 are equidistantly arranged on the sleeve plate 19-1, and one sleeve groove 19-2 is arranged corresponding to each tooth 19-3, the tooth 19-3 is slidably arranged in the sleeve groove 19-2, the extension spring 19-4 is arranged in the sleeve groove 19-2, and the extension spring 19-4 is used to push the tooth 19-3 outward, the top plate 20 includes a main plate body 20-1 and a sub-plate body 20-2 vertically arranged on the main plate body 20-1, and the top plate 20 is displaced inward so that the inner end of the sub-plate body 20-2 abuts against the outer side of the tooth 19-3 through the sleeve groove 19-2 to lock the tooth 19-3.

Specifically, when the top plate 20 is located at the outermost position on the first rod 6-1 in the displacement direction, the teeth 19-3 are supported by the extension spring 19-4, and the sleeve plate 19-1 is supported by the support spring 19-5. At this time, when the second rod 6-2 is directly pulled inward, the fixed ratchet bar 18 can pass over the teeth 19-3 by squeezing the teeth 19-3 in the sleeve groove 19-2, thereby conveniently increasing the length of the calibration rod 6. When the second rod 6-2 is moved out of the first rod 6-1, the teeth 19-3 are kept in the extended state under the action of the extension spring 19-4, which has the function of preventing the second rod 6-2 from shrinking into the first rod 6-1.

More specifically, the outer inner wall surface of the sleeve groove 19-2 is provided with a through groove for the auxiliary plate body 20-2 to pass through, and the two sides of the inner end of the auxiliary plate body 20-2 are in a convex state, so that when the top plate 20 moves outward to the outermost position on the first rod body 6-1, the auxiliary plate body 20-2 is first separated from the tooth 19-3, so that the tooth 19-3 is supported by the outward spring 19-4, and then the auxiliary plate body 20-2 pulls the sleeve plate 19-1 outward, the sleeve plate 19-1 compresses the supporting spring 19-5, and the tooth 19-3 supported by the outward spring 19-4 is separated from the fixed tooth 19-3. At this time, the second rod body 6-2 can be squeezed inward to shorten the length of the calibration rod 6.

Furthermore, a force storage spring 21 is arranged in the first rod body 6-1, and the force storage spring 21 is connected to the outer end of the second rod body 6-2, and is used to provide the second rod body 6-2 with elastic force to extend out of the first rod body 6-1, and when the auxiliary plate body 20-2 abuts against the tooth 19-3, the tooth 19-3 is locked in a state of extending out of the sleeve groove 19-2, and when the auxiliary plate body 20-2 moves to the outermost position of the inner cavity of the sleeve groove 19-2, the force storage spring 21 enables the second rod body 6-2 to continuously extend out of the first rod body 6-1 to keep the inner top wheel 7 in contact with the hull frame.

Furthermore, a guide groove 22 is provided on the main body 20-1, and a guide rod 23 is provided in the guide groove 22. A strip groove 24 is provided on a side of the main body 20-1 away from the first rod body 6-1, and a movable plate 25 capable of moving along the length direction of the first rod body 6-1 is provided in the strip groove 24. The guide rod 23 is fixedly provided on the movable plate 25, and the outer ends of the two movable plates 25 are fixedly connected with a slip ring 26 sleeved outside the first rod body 6-1, and the outer end surface of the slip ring 26 is connected to the support A guiding structure is arranged between the support beams 4, wherein: when the calibration rod 6 is in a state where the inner end is tilted upward, the guiding structure enables the movable plate 25 to be located at the outermost position, and the guiding rod 23 supports the auxiliary plate body 20-2 on the outer surface of the tooth 19-3 through the guiding groove 22; when the calibration rod 6 is in a horizontal state and the inner end is tilted downward, the guiding structure enables the movable plate 25 to be located at the innermost position, and the guiding rod 23 separates the auxiliary plate body 20-2 from the tooth 19-3 through the guiding groove 22.

By making the above arrangement, when the calibration rod 6 is rotated from the upward tilted state of the inner end to the horizontal state under the pressure of the hull frame, the teeth 19-3 are supported by the auxiliary plate 20-2. At this time, the teeth 19-3 cannot shrink into the sleeve groove 19-2, the fixed ratchet bar 18 is locked by the fixed ratchet bar 18, and the second rod 6-2 is locked on the first rod 6-1 in the telescopic direction, so that the overall length of the calibration rod 6 remains unchanged to ensure that the calibration rod 6 can stably correct the lowered hull frame. When the hull frame is calibrated, that is, when the calibration rod 6 is in a horizontal state, the guide structure makes the auxiliary plate 20-2 located at the outermost position of the inner cavity of the sleeve groove 19-2. At this time, the auxiliary plate 20-2 and the teeth 19-3 are separated, and the teeth 19-3 are supported by the outward spring 19-4. The inner end of the second rod 6-2 is supported by the longitudinal beam side of the bottom of the hull frame through the inner top wheel 7. Afterwards, as the hull frame continues to be lowered, the calibration rod 6 is in a state where the inner end swings downward, and during this process, the second rod 6-2 is continuously extended from the inner end of the first rod 6-1 under the action of the force storage spring 21 to keep the inner top wheel 7 always in contact with the longitudinal beam side of the bottom of the hull frame. In addition, when the second rod 6-2 is extended, the cooperation between the movable ratchet bar 19 and the fixed ratchet bar 18 has the function of preventing the second rod 6-2 from shrinking into the first rod 6-1. Therefore, in the process of the hull frame changing from the calibrated state to the state of falling on the top of the support wheel 5, the calibration rod 6 can prevent the hull frame from shifting by continuously extending and being locked in the shrinking direction, thereby ensuring that the hull frame remains in the calibrated state when it is placed on the support wheel 5.

Specifically, the guide groove 22 includes an inclined groove and a horizontal groove. When the guide rod 23 moves toward one side of the hull frame in the inclined groove, that is, moves inward, the main plate 20-1 is pushed toward the center of the first rod 6-1, so that the auxiliary plate 20-2 supports the teeth 19-3 in the state of extending out of the sleeve groove 19-2, preventing the teeth 19-3 from moving into the sleeve groove 19-2, and locking the teeth 19-3 on the first rod 6-1 in the extension and retraction direction of the second rod 6-2. Afterwards, the guide rod 23 moves from the inclined groove to the horizontal groove.

On the contrary, when the guide rod 23 enters the inclined groove from the horizontal groove and continues to move toward the side away from the hull frame, the main plate body 20-1 is driven to move in the direction away from the center of the first rod body 6-1. At this time, the main plate body 20-1 will drive the sub-plate body 20-2 to disengage from the teeth 19-3. When the guide rod 23 moves outward to the end of the inclined groove away from the horizontal groove, the support spring 19-5 is compressed, and the main plate body 20-1 drives the teeth 19-3 to be separated from the fixed ratchet teeth 19-3 through the outward spring 19-4. In this state, the second rod body 6-2 can be pulled inward and outward at will.

The guide structure includes a track rod 27 and a track plate 28, wherein the inner end of the track rod 27 is connected to the slip ring 26, and the outer end of the track rod 27 is slidably arranged on the track plate 28, and the track plate 28 is fixedly installed on the top of the support beam 4. Specifically, during the swinging process of the calibration rod 6, the track rod 27 is displaced on the track plate 28. When the calibration rod 6 is in a state where the inner end is tilted upward, the track plate 28 limits the position of the track rod 27 in the length direction of the calibration rod 6, so that the auxiliary plate body 20-2 supports the teeth 19-3, and keeps the overall length of the calibration rod 6 unchanged. When the calibration rod 6 is in a horizontal state, the track plate 28 makes the track rod 27 in a state after being displaced outward. At this time, the auxiliary plate body 20-2 is located at the outermost position of the inner cavity of the sleeve groove 19-2. At this time, the teeth 19-3 are supported by the outward spring 19-4, and the teeth 19-3 are in a state of meshing with the fixed ratchet gear.

A track groove is provided on the track plate 28, and the track groove includes an upper arc segment, an outer guide segment and a lower arc segment in sequence along the downward swing direction of the calibration rod 6. The outer end of the track rod 27 is provided with an outer guide rod that moves in the track groove. When the calibration rod 6 swings from the upward tilted state of the inner end to the horizontal state, the outer guide rod passes through the upper arc segment and the outer guide segment from top to bottom and moves to the middle of the outer guide segment. At this time, the guide rod 23 is located in the middle position of the inclined groove of the guide groove 22, and the auxiliary plate body 20-2 moves to the outermost position of the inner cavity of the sleeve groove 19-2. The teeth 19-3 are supported by the extension spring 19-4, and the teeth 19-3 are in a state of meshing with the fixed ratchet bar 18 under the action of the extension spring 19-4. When the inner end of the calibration rod 6 swings to a downward tilted state, the outer guide rod enters the lower arc section. At this time, the guide rod 23 is located at the end of the inclined groove of the guide groove 22 away from the horizontal groove, and the auxiliary plate body 20-2 passes through the outer wall of the inner cavity of the outer pull sleeve groove 19-2, so that the sleeve plate 19-1 moves outward to the outermost position, and the support spring 19-5 is compressed. At this time, the tooth 19-3 is supported by the outward extension spring 19-4 to the state of extending out of the sleeve plate 19-1, and the tooth 19-3 is separated from the fixed ratchet bar 18.

During use, after the calibration rod 6 supports the hull frame and the hull frame is supported by the support wheel 5, the slide 3 can be controlled to move outward on the frame 1. At this time, the support wheel 5 moves outward on the inclined surface of the hull frame, thereby continuously lowering the hull frame so that it falls onto the installation foundation.

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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A hoisting operation positioning device for hull frame welding, characterized by comprising: A walking frame, comprising a frame body (1) and walking wheels arranged at the bottom of the frame body (1), wherein the frame body (1) is provided with supporting legs (2) supported on the ground; A slide (3), one slide being arranged on each side of the top of the frame (1), and the slide (3) being slidably mounted on the frame (1) in the width direction; A support beam (4), one of which is disposed on both the front and rear sides of the top of the slide (3), and a support wheel (5) is disposed on the top of the support beam (4); A calibration rod (6) is provided corresponding to each support beam (4), and the outer end of the calibration rod (6) is rotatably mounted on the top end of the support beam (4), the inner end of the calibration rod (6) is mounted with an inner top wheel (7), and the distance between the inner ends of two calibration rods (6) opposite to each other in the width direction of the walking frame is adapted to the width of the longitudinal beam at the bottom of the hull frame when in a horizontal state; An elastic support rod (8) is mounted on the support beam (4), and the protruding end of the elastic support rod (8) is connected to the calibration rod (6) via a connecting rod (9). Under the action of the elastic support rod (8), the connecting rod (9) causes the calibration rod (6) to be in an inclined state with its inner end facing upward in an initial state; The support beam (4) comprises two first beam bodies (4-1) which are relatively distributed in the front-to-back direction and a second beam body (4-2) which is fixedly arranged between the bottom ends of the two first beam bodies (4-1), and the two first beam bodies (4-1) are spaced apart from each other. A lifting groove (10) is provided on one side opposite to the other of the two first beam bodies (4-1). An upper lifting slider (11) which is slidably matched with the lifting groove (10) is provided at the top of the extended end of the elastic support rod (8). A lower hinge seat is installed on the inner side surface of the upper lifting slider (11), and the bottom end of the connecting rod (9) is rotatably connected to the lower hinge seat. One support wheel (5) is provided at the top end of each of the two first beam bodies (4-1) on the opposite sides. The outer end of the calibration rod (6) is rotatably installed between the top ends of the two first beam bodies (4-1). The calibration rod (6) comprises a first rod body (6-1) and a second rod body (6-2), the outer end of the first rod body (6-1) is rotatably connected between the top ends of the two first beam body (4-1) parts, the outer end of the second rod body (6-2) can be slidably inserted from the inner end of the first rod body (6-1) into the interior thereof, the inner top wheel (7) is rotatably mounted on the inner end of the second rod body (6-2), the outer sleeve of the first rod body (6-1) is provided with a pipe sleeve, the bottom end of the pipe sleeve is provided with an upper hinge seat, and the top end of the connecting rod (9) is rotatably connected to the upper hinge seat, and a rod length adjustment structure for adjusting the length of the calibration rod (6) is provided between the first rod body (6-1) and the second rod body (6-2). 2. A hoisting operation positioning device for hull frame welding according to claim 1, characterized in that the bottom end of the elastic support rod (8) is provided with a lower lifting slider (12) that slides with the lifting groove (10), and a lifting screw (13) is threaded through the lower lifting slider (12), and the lifting screw (13) is rotatably installed on the second beam body (4-2), and when the lower lifting slider (12) is located at the lowest position in the lifting groove (10), the calibration rod (6) is in a state of being stored in the inner side direction of the support beam (4). 3. A hoisting operation positioning device for hull frame welding according to claim 1, characterized in that transverse slide rails (14) are provided on both the front and rear sides of the top of the frame body (1), the bottom end of the slide (3) is slidably matched with the transverse slide rails (14), and the two slides (3) are threadedly connected with transverse screw rods (15) rotatably mounted on the frame body (1), and the bottom end of the slide (3) is provided with locking bolts (16), and a plurality of locking holes (17) are provided on the frame body (1), and the locking bolts (16) fix the slide (3) in the adjusted position by connecting the locking holes (17). 4. A hull frame welding hoisting operation positioning device according to claim 1, characterized in that the rod length adjustment structure comprises a fixed ratchet bar (18) and a movable ratchet bar (19), wherein two fixed ratchet bars (18) are provided on the surface of the second rod body (6-2), and the two fixed ratchet bars (18) are symmetrically distributed, and two movable ratchet bars (19) are provided on the first rod body (6-1), and the two movable ratchet bars (19) are symmetrically distributed, and the movable ratchet bar (19) is radially displaceably installed on the first rod body (6-1), and a top plate (20) is provided on the outer side of the movable ratchet bar (19), and the top plate (20) is radially displaceably installed on the first rod body (6-1), and the top plate (20) is displaced inwardly so that the movable ratchet bar (19) engages with the fixed ratchet bar (18) and locks the second rod body (6-2). 5. A hoisting operation positioning device for hull frame welding according to claim 4, characterized in that the movable ratchet bar (19) comprises a sleeve plate (19-1), a sleeve groove (19-2), teeth (19-3) and an outward spring (19-4), wherein the sleeve plate (19-1) is slidably mounted on the first rod body (6-1), and support springs (19-5) are connected to both ends of the sleeve plate (19-1), the sleeve grooves (19-2) are equidistantly arranged on the sleeve plate (19-1), and one sleeve groove (19-2) is provided corresponding to each tooth (19-3), and the sleeve groove (19-2) is provided at a distance from each other. The tooth (19-3) is slidably arranged in the sleeve groove (19-2), the outward extension spring (19-4) is arranged in the sleeve groove (19-2), and the outward extension spring (19-4) is used to push the tooth (19-3) outward, the top plate (20) comprises a main plate body (20-1) and a sub-plate body (20-2) vertically arranged on the main plate body (20-1), and the top plate (20) is displaced inward so that the inner side end of the sub-plate body (20-2) passes through the sleeve groove (19-2) and abuts against the outer side of the tooth (19-3), thereby locking the tooth (19-3). 6. A hoisting operation positioning device for hull frame welding according to claim 5, characterized in that a force storage spring (21) is arranged in the first rod body (6-1), and the force storage spring (21) is connected to the outer end of the second rod body (6-2) to provide the second rod body (6-2) with elastic force to extend out of the first rod body (6-1), and when the auxiliary plate body (20-2) abuts against the tooth (19-3), the tooth (19-3) is locked in a state of extending out of the sleeve groove (19-2), and when the auxiliary plate body (20-2) moves to the outermost position of the inner cavity of the sleeve groove (19-2), the force storage spring (21) enables the second rod body (6-2) to continuously extend out of the first rod body (6-1) to maintain the state in which the inner top wheel (7) contacts the hull frame. 7. A hoisting positioning device for hull frame welding according to claim 6, characterized in that a guide groove (22) is provided on the main body (20-1), a guide rod (23) is arranged in the guide groove (22), a strip groove (24) is provided on a side of the main body (20-1) away from the first rod body (6-1), a movable plate (25) capable of displacement along the length direction of the first rod body (6-1) is arranged in the strip groove (24), the guide rod (23) is fixedly arranged on the movable plate (25), and the outer ends of the two movable plates (25) are fixedly connected with a sleeve arranged on the first rod body (6-1). An outer slip ring (26), a guide structure is provided between the outer end surface of the slip ring (26) and the support beam (4), wherein: when the calibration rod (6) is in a state where the inner end is tilted upward, the guide structure enables the movable plate (25) to be located at the outermost position, and the guide rod (23) enables the auxiliary plate body (20-2) to be supported on the outer side surface of the tooth (19-3) through the guide groove (22); when the calibration rod (6) is in a horizontal state and the inner end is tilted downward, the guide structure enables the movable plate (25) to be located at the innermost position, and the guide rod (23) enables the auxiliary plate body (20-2) to be separated from the tooth (19-3) through the guide groove (22). 8. A hoisting operation positioning device for hull frame welding according to claim 7, characterized in that the guide structure includes a track rod (27) and a track plate (28), the inner end of the track rod (27) is connected to the slip ring (26), the outer end of the track rod (27) is slidably arranged on the track plate (28), and the track plate (28) is fixedly installed on the top end of the support beam (4).