A limited lifting device for ships with a hole-type holding ring function

Abstract

The present invention discloses a limited-type lifting device for ships with a hole-type holding ring function, which relates to the technical field. The lifting device includes a workbench, a U-shaped plate, a support plate, a transmission device, a support frame, a first motor, a counterweight plate, a lifting device and a chain. The limiting device in the transmission device can respond quickly in the event of power outage, sudden failure, etc. of the equipment, and immediately lock the transmission shaft. When the component falls rapidly due to the acceleration of gravity, the braking device in the transmission device can be immediately started to apply forced braking to the transmission shaft. This double safety guarantee ensures that the transmission shaft can be reliably braked in an emergency. The lifting device can automatically complete the clamping of the cylindrical component. At the same time, the automatic latch system inside the device will be started synchronously to accurately insert the latch into the preset hole of the cylindrical component, thereby ensuring that the component is firmly fixed, reducing the labor intensity of workers and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field, in particular to a position-limiting lifting device for ships with a hole-type holding ring function. Background Art

[0002] During the ship assembly and construction process, there are a large number of cylindrical components such as piping accessories and small bases that need to be installed in the deck area. These loose parts need to be lifted and moved to the installation area. Such loose parts are beyond the safe operating range of conventional manual handling. Under the traditional operation mode, a large-span crane is often used for lifting. However, this method is cumbersome to operate, troublesome to dispatch, and wastes resources, and has obvious low efficiency problems. In addition, when clamping components, existing lifting equipment needs to manually fix the components on the lifting platform, which has high labor intensity. In emergencies such as power outages and sudden failures, the components on the lifting platform will directly drop, causing harm to the personnel under the lifting equipment, posing a major safety hazard. Summary of the Invention

[0003] The object of the present invention is to provide a position-limiting lifting device for ships with a hole-type holding ring function, so as to solve the problems raised in the prior art.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: the lifting equipment includes a workbench, a U-shaped plate and a support frame are installed on one side of the workbench, a support plate is installed on one side of the U-shaped plate, a transmission device is rotatably connected to the support plate, a chain is installed on the transmission device, a counterweight plate is installed at one end of the chain, the counterweight plate slides on the inside of the U-shaped plate, a lifting device is installed at the other end of the chain, a first motor is installed on one side of the support frame, the output shaft of the first motor is installed on the transmission device, and the first motor is connected to the control system.

[0005] The transmission device includes a transmission shaft, which is rotatably connected to a support plate, a sprocket mounted on the transmission shaft, the chain meshing with the sprocket, a limit device mounted below the transmission shaft, the limit device mounted on a U-shaped plate, a brake device mounted on one end of the transmission shaft, a first transmission wheel mounted on the other end of the transmission shaft, a second transmission wheel mounted on the output shaft of the first motor, and a first belt mounted on the first and second transmission wheels. When the component is lifted, the control system controls the first motor to start, the first motor drives the second transmission wheel to rotate, the second transmission wheel drives the first belt to rotate, the first belt drives the first transmission wheel to rotate, the first transmission wheel drives the transmission shaft to rotate, the transmission shaft drives the sprocket to rotate, the sprocket drives the chain to rotate, the chain drives the mounting plate to move, the mounting plate drives the sliding member to slide on the limit column, the mounting plate drives the holding ring device to move, and the holding ring device drives the component to move.

[0006] The limiting device includes a base plate, which is installed on a U-shaped plate, a first side plate and a locking structure are installed on one side of the base plate, a connecting column is installed on the first side plate, a fixed wheel is installed on one end of the connecting column, a sliding belt is slidably connected to the fixed wheel, a counterweight is installed on one end of the sliding belt, an electromagnet is installed on the outer side of the first side plate, the other end of the sliding belt is installed on the locking structure, and the electromagnet is connected to the control system.

[0007] The locking structure includes a second side plate, the second side plate is mounted on the bottom plate, the second side plate is rotatably connected to a first rotating shaft, the first rotating shaft is mounted with a rolling wheel and a first gear, one end of the sliding belt is mounted on the rolling wheel, the U-shaped plate is slidably connected to a rack, one end of the rack is connected to a locking block, the transmission shaft is mounted with a first ratchet, and the locking block is located below the first ratchet. Under normal circumstances, the control system controls the electromagnet to adsorb the counterweight. When an emergency such as a power outage or sudden failure occurs, the electromagnet is powered off, the counterweight slides downward, the counterweight drives the sliding belt to slide on the fixed wheel, the sliding belt drives the rolling wheel to rotate, the rolling wheel drives the first rotating shaft to rotate, the first rotating shaft drives the first gear to rotate, the first gear drives the rack to slide, the rack slides on the U-shaped plate toward the first ratchet, and the rack drives the locking block to move until the locking block gets stuck in the first ratchet, and the first ratchet drives the transmission shaft to stop rotating.

[0008] The brake device includes a brake housing mounted on a transmission shaft, a limit block mounted inside the brake housing, a brake block slidably connected to the limit block, a guide post radially slidably connected to the transmission shaft, a rolling block mounted on one end of the guide post, a first spring mounted on one end of the rolling block, the other end of the first spring mounted on the transmission shaft, and the first spring sleeved on the guide post. In an emergency such as a power outage or sudden failure, when the component accelerates downward and the transmission shaft breaks through the limit of the limit device, the component drives the ring device to move, the ring device drives the chain to move, the chain drives the sprocket to rotate, the sprocket drives the transmission shaft to accelerate, and the transmission shaft drives the brake housing to rotate rapidly. The generated centrifugal force stretches the first spring, which drives the rolling block toward the brake block. The rolling block drives the guide post to slide within the transmission shaft, the rolling block abuts the inner side of the brake block, the rolling block drives the brake block to slide on the limit block, and the brake block abuts the inner wall of the brake housing, generating friction to brake the transmission shaft.

[0009] The lifting device includes a limiting column, one end of which is installed on the inner side of the U-shaped plate, and the other side of the limiting column is installed on the workbench. A slider is slidably connected to the limiting column, a mounting plate is installed on one side of the slider, and a holding ring device is installed on one side of the mounting plate.

[0010] The holding ring device includes a connecting block, which is installed on a mounting plate, a sliding structure is installed in the connecting block, an arc block is installed on one side of the connecting block, a second gear is installed on one end of the arc block, the arc block is slidably connected to an arc plate, a limiting groove is provided on the arc plate, a limiting plate is installed on the inner side of the arc block, a rotating structure is installed in the arc block, a second motor is installed on one end of the arc block, and the second motor is connected to the control system.

[0011] The transmission gear is engaged with the first and second gears and is engaged with the first and second gears respectively. The third gear drives the second gear to rotate, and the second gear drives the arc plate to slide on the arc block until one end of the arc plate rests on the limit plate, and the second motor is controlled to stop; when the component needs to be loosened, the output shaft of the second motor is controlled to reverse, and the third gear drives the second gear to rotate. The second motor drives the second rotating shaft to reverse, the second rotating shaft drives the first transmission gear and the third gear to reverse, the first transmission gear drives the second belt to reverse, the second belt drives the second transmission gear and the third transmission gear to reverse, the third transmission gear drives the third rotating shaft to reverse, the third rotating shaft drives the rotating block to reverse, the rotating block drives the pawl to reverse around the third rotating shaft, at this time the pawl is on the second ratchet, the pawl drives the second ratchet to rotate, the second ratchet drives the half gear to rotate, when the hole pin leaves the hole on the arc plate, the half gear drives the second gear to reverse, the second gear drives the arc plate to reverse, when the arc plate is rotated halfway, the hole pin enters the through slot, until the arc plate returns to its initial position, the second motor is controlled to stop.

[0012] The sliding structure includes a hole-type pin, a through groove, a first rotating groove and a second rotating groove are provided inside the connecting block, the hole-type pin slides in the through groove, the outer wall of the hole-type pin is rotatably connected to a nut seat, the nut seat rotates in the first rotating groove, a first bevel gear is installed on one side of the nut seat, and a second bevel gear is rotatably connected in the second rotating groove, the first bevel gear and the second bevel gear are meshed, a fifth rotating shaft is installed on the second bevel gear, one end of the fifth rotating shaft is installed on the fourth transmission gear, one end of the fourth rotating shaft is installed on the fifth transmission gear, and a third belt is installed on the fourth transmission gear and the fifth transmission gear. When the fourth rotating shaft rotates, the fourth rotating shaft drives the fifth transmission gear to rotate, the fifth transmission gear drives the third belt to rotate, the third belt drives the fourth transmission gear to rotate, the fourth transmission gear drives the fifth rotating shaft to rotate, the fifth rotating shaft drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the nut seat to rotate in the first rotating groove, and the nut seat drives the hole type pin to move in the through groove. When the arc plate rotates halfway, the hole type pin slides out of the through groove, and when one end of the arc plate rests on the limit plate, the hole type pin is inserted from the hole of the arc plate.

[0013] The outer side of the brake block is made of a material with a high friction coefficient, and the outer surface of the hole-shaped pin is provided with a thread.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention adopts an intelligent clamping method. During the working process, cylindrical components can be precisely clamped without human intervention. At the same time, the automatic latch system inside the device will be activated synchronously to accurately insert the latch into the preset hole shape of the cylindrical component, thereby ensuring that the component is firmly fixed. Compared with traditional fixing methods that require manual operation, this intelligent clamping method greatly reduces the need for human intervention, not only reducing the labor intensity of workers, but also effectively improving the safety and stability of the operation and improving work efficiency.

[0016] 2. The present invention adopts dual safety technology to ensure that the transmission shaft can be reliably braked in emergency situations. The limit device has an automatic locking function. When the equipment loses power, suddenly fails, or stops suddenly, the limit device can respond quickly and immediately lock the transmission shaft to prevent it from any unexpected rotation or movement, thereby effectively avoiding dangerous situations caused by loss of control of the equipment. When the component falls rapidly due to the acceleration of gravity, the braking device can be immediately activated to apply forced braking to the transmission shaft to quickly stop its movement, thereby effectively preventing the component from falling out of control and ensuring the safety of the working area. This dual safety protection can minimize equipment damage or personal injury caused by the uncontrolled falling of components.

[0017] 3. This invention utilizes a purely mechanical structure, eliminating the need for sensors or other electronic components. This ensures stable operation in a variety of complex environments, unaffected by electromagnetic interference, temperature fluctuations, or humidity. The absence of electronic components allows for highly reliable mechanical response during operation. Compared to traditional systems that rely on electronic control, this simplifies maintenance requirements, reduces operational costs, improves response speed, and enhances both stability and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the lifting device of the present invention;

[0019] Figure 2 is a perspective view of the transmission device of the present invention;

[0020] Figure 3 is a three-dimensional diagram of the limiting device of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the braking device of the present invention;

[0022] Figure 5 is a perspective view of the lifting device of the present invention;

[0023] Figure 6 It is a three-dimensional diagram of the ring holding device of the present invention;

[0024] Figure 7 A perspective view of the rotating structure of the present invention;

[0025] Figure 8 It is a three-dimensional diagram of the sliding structure of the present invention.

[0026] In the figure: 1. workbench; 2. U-shaped plate; 3. support plate; 4. transmission device; 41. transmission shaft; 42. sprocket; 43. limiting device; 431. bottom plate; 432. first side plate; 433. connecting column; 434. fixed wheel; 435. counterweight; 436. sliding belt; 437. locking structure; 4371. second side plate; 4372. rolling wheel; 4373. first rotating shaft; 4374. first gear; 4375. rack; 4376. locking block; 4377. first ratchet; 44. braking device; 441. brake housing; 442. limiting block; 443. brake block; 444. first spring; 445. rolling block; 45. first transmission wheel; 46. first belt; 47. second transmission wheel; 5. support frame; 6 , first motor; 7, counterweight plate; 8, lifting device; 81, limiting column; 82, mounting plate; 83, holding ring device; 831, connecting block; 832, arc block; 833, arc plate; 834, limiting plate; 835, rotating structure; 8351, first transmission gear; 8352, second transmission gear; 8353, third transmission gear; 8354, second belt; 8355, third gear; 8356, rotating block; 8357, half gear; 836, second motor; 837, sliding structure; 8371, nut seat; 8372, first bevel gear; 8373, hole pin; 8374, second bevel gear; 8375, fourth transmission gear; 8376, fifth transmission gear; 8377, third belt; 9, chain. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: Figures 1-8 As shown, the present invention provides a technical solution, in which a lifting device includes a workbench 1, a U-shaped plate 2 and a support frame 5 are installed on one side of the workbench 1, a support plate 3 is installed on one side of the U-shaped plate 2, a transmission device 4 is rotatably connected to the support plate 3, a chain 9 is installed on the transmission device 4, a counterweight plate 7 is installed at one end of the chain 9, the counterweight plate 7 slides on the inner side of the U-shaped plate 2, a lifting device 8 is installed at the other end of the chain 9, a first motor 6 is installed on one side of the support frame 5, the output shaft of the first motor 6 is installed on the transmission device 4, and the first motor 6 is connected to the control system.

[0029] The transmission device 4 includes a transmission shaft 41, which is rotatably connected to the support plate 3. A sprocket 42 is installed on the transmission shaft 41, and the chain 9 is engaged with the sprocket 42. A limiting device 43 is installed below the transmission shaft 41, and the limiting device 43 is installed on the U-shaped plate 2. A braking device 44 is installed at one end of the transmission shaft 41, and a first transmission wheel 45 is installed at the other end of the transmission shaft 41. A second transmission wheel 47 is installed on the output shaft of the first motor 6, and a first belt 46 is installed on the first transmission wheel 45 and the second transmission wheel 47. When the component is lifted, the control system controls the first motor 6 to start, the first motor 6 drives the second transmission wheel 47 to rotate, the second transmission wheel 47 drives the first belt 46 to rotate, the first belt 46 drives the first transmission wheel 45 to rotate, the first transmission wheel 45 drives the transmission shaft 41 to rotate, the transmission shaft 41 drives the sprocket 42 to rotate, the sprocket 42 drives the chain 9 to rotate, the chain 9 drives the mounting plate 82 to move, the mounting plate 82 drives the sliding on the limiting column 81, the mounting plate 82 drives the holding ring device 83 to move, and the holding ring device 83 drives the component to move.

[0030] The limiting device 43 includes a base plate 431, which is installed on the U-shaped plate 2. A first side plate 432 and a locking structure 437 are installed on one side of the base plate 431. A connecting column 433 is installed on the first side plate 432. A fixed wheel 434 is installed at one end of the connecting column 433. A sliding belt 436 is slidably connected to the fixed wheel 434. A counterweight 435 is installed at one end of the sliding belt 436. An electromagnet is installed on the outer side of the first side plate 432. The other end of the sliding belt 436 is installed on the locking structure 437. The electromagnet is connected to the control system.

[0031] The locking structure 437 includes a second side plate 4371, which is installed on the base plate 431, and the second side plate 4371 is rotatably connected to the first rotating shaft 4373, and the first rotating shaft 4373 is installed with a rolling wheel 4372 and a first gear 4374, one end of the sliding belt 436 is installed on the rolling wheel 4372, and a rack 4375 is slidably connected to the U-shaped plate 2, and one end of the rack 4375 is connected to a locking block 4376, and a first ratchet 4377 is installed on the transmission shaft 41, and the locking block 4376 is located below the first ratchet 4377. Under normal circumstances, the control system controls the electromagnet to adsorb the counterweight 435. When an emergency such as power outage or sudden failure occurs, the electromagnet is powered off, the counterweight 435 slides downward, and the counterweight 435 drives the sliding belt 436 to slide on the fixed wheel 434. The sliding belt 436 drives the rolling wheel 4372 to rotate, and the rolling wheel 4372 drives the first rotating shaft 4373 to rotate. The first rotating shaft 4373 drives the first gear 4374 to rotate, and the first gear 4374 drives the rack 4375 to slide. The rack 4375 slides on the U-shaped plate 2 in the direction close to the first ratchet 4377, and the rack 4375 drives the locking block 4376 to move until the locking block 4376 is stuck on the first ratchet 4377, and the first ratchet 4377 drives the transmission shaft 41 to stop rotating.

[0032] The braking device 44 includes a brake housing 441, which is installed on the transmission shaft 41. A limit block 442 is installed inside the brake housing 441. A brake block 443 is slidably connected to the limit block 442. The outer side of the brake block 443 is made of a material with a high friction coefficient. A guide column is radially slidably connected to the transmission shaft 41. A rolling block 445 is installed at one end of the guide column. A first spring 444 is installed at one end of the rolling block 445. The other end of the first spring 444 is installed on the transmission shaft 41, and the first spring 444 is sleeved on the guide column.

[0033] In an emergency such as a power outage or sudden failure, when the component accelerates to descend and the transmission shaft 41 breaks through the limit of the limit device 43, the component drives the ring device 83 to move, the ring device 83 drives the chain 9 to move, the chain 9 drives the sprocket 42 to rotate, the sprocket 42 drives the transmission shaft 41 to rotate faster, and the transmission shaft 41 drives the brake housing 441 to rotate rapidly. The centrifugal force generated causes the first spring 444 to stretch, and the first spring 444 drives the rolling block 445 to move in the direction close to the brake block 443. The rolling block 445 drives the guide column to slide in the transmission shaft 41, and the rolling block 445 abuts against the inner side of the brake block 443. The rolling block 445 drives the brake block 443 to slide on the limit block 442, and the brake block 443 abuts against the inner wall of the brake housing 441, generating friction to brake the transmission shaft 41.

[0034] The lifting device 8 includes a limiting column 81, one end of the limiting column 81 is installed on the inner side of the U-shaped plate 2, and the other side of the limiting column 81 is installed on the workbench 1. A slider is slidably connected to the limiting column 81, and a mounting plate 82 is installed on one side of the slider, and a ring device 83 is installed on one side of the mounting plate 82.

[0035] The holding ring device 83 includes a connecting block 831, which is installed on the mounting plate 82. A sliding structure 837 is installed in the connecting block 831. An arc block 832 is installed on one side of the connecting block 831. A second gear is installed at one end of the arc block 832. The arc block 832 is slidably connected to an arc plate 833. A limiting groove is provided on the arc plate 833. A limiting plate 834 is installed on the inner side of the arc block 832. A rotating structure 835 is installed in the arc block 832. A second motor 836 is installed at one end of the arc block 832. The second motor 836 is connected to the control system.

[0036] The rotating structure 835 includes a first transmission gear 8351. An arc-shaped groove is provided inside the arc block 832. The first transmission gear 8351 is installed in the arc groove. A second rotating shaft is installed on the first transmission gear 8351. The second rotating shaft is installed on the output shaft of the second motor 836. A second transmission gear 8352 and a third transmission gear 8353 are installed in the arc groove. The second transmission gear 8352 is installed on the third rotating shaft. The third transmission gear 8353 is installed on the fourth rotating shaft. One end of the fourth rotating shaft is installed on the sliding structure 837. The first transmission gear 835 1. A second belt 8354 is installed on the second transmission gear 8352 and the third transmission gear 8353. A third gear 8355 is installed at one end of the second rotating shaft. The third gear 8355 is meshed with the second gear. A rotating block 8356 is installed at one end of the third rotating shaft. A pawl is installed on the outer wall of the rotating block 8356. A second spring is installed between the pawl and the rotating block 8356. A half gear 8357 is installed on one side of the arc block 832. The half gear 8357 is meshed with the second gear. A second ratchet is installed inside the half gear 8357, and the pawl rests on the second ratchet.

[0037] When a clamping component is required, the control system controls the second motor 836 to start, and the output shaft of the second motor 836 drives the second rotating shaft to rotate, and the second rotating shaft drives the first transmission gear 8351 and the third gear 8355 to rotate, and the first transmission gear 8351 drives the second belt 8354 to rotate, and the second belt 8354 drives the second transmission gear 8352 and the third transmission gear 8353 to rotate, and the third transmission gear 8353 drives the third rotating shaft to rotate, and the third rotating shaft drives the rotating block 8356 to rotate, and the rotating block 8356 drives the pawl to rotate around the third rotating shaft. At this time, the pawl slides on the second ratchet, and the third gear 8355 drives the second gear to rotate. The second gear drives the arc plate 833 to slide on the arc block 832 until one end of the arc plate 833 rests on the limit plate 834, and the second motor 836 is controlled to stop.

[0038] When it is necessary to loosen the component, the output shaft of the second motor 836 is controlled to reverse, and the second motor 836 drives the second rotating shaft to reverse, and the second rotating shaft drives the first transmission gear 8351 and the third gear 8355 to reverse, the first transmission gear 8351 drives the second belt 8354 to reverse, the second belt 8354 drives the second transmission gear 8352 and the third transmission gear 8353 to reverse, the third transmission gear 8353 drives the third rotating shaft to reverse, the third rotating shaft drives the rotating block 8356 to reverse, and the rotating block 8356 drives the pawl to reverse around the third rotating shaft. At this time, the pawl rests on the second ratchet, and the pawl drives the second ratchet to rotate, and the second ratchet drives the half gear 8357 to rotate. When the hole-shaped latch 8373 leaves the hole on the arc plate 833, the half gear 8357 drives the second gear to reverse, and the second gear drives the arc plate 833 to reverse. When the arc plate 833 rotates halfway, the hole-shaped latch 8373 enters the through slot. Until the arc plate 833 returns to its initial position, the second motor 836 is controlled to stop.

[0039] The sliding structure 837 includes a hole-type pin 8373, the outer surface of which is provided with a thread, and the interior of the connecting block 831 is provided with a through groove, a first rotating groove and a second rotating groove, the hole-type pin 8373 slides in the through groove, and the outer wall of the hole-type pin 8373 is rotatably connected to the nut seat 8371, and the nut seat 8371 rotates in the first rotating groove, and a first bevel gear 8372 is installed on one side of the nut seat 8371, and a second bevel gear 8374 is rotatably connected in the second rotating groove, the first bevel gear 8372 and the second bevel gear 8374 are meshed, and a fifth rotating shaft is installed on the second bevel gear 8374, and a fourth transmission gear 8375 is installed at one end of the fifth rotating shaft, and a fifth transmission gear 8376 is installed at one end of the fourth rotating shaft, and a third belt 8377 is installed on the fourth transmission gear 8375 and the fifth transmission gear 8376.

[0040] When the fourth rotating shaft rotates, the fourth rotating shaft drives the fifth transmission gear 8376 to rotate, the fifth transmission gear 8376 drives the third belt 8377 to rotate, the third belt 8377 drives the fourth transmission gear 8375 to rotate, the fourth transmission gear 8375 drives the fifth rotating shaft to rotate, the fifth rotating shaft drives the second bevel gear 8374 to rotate, the second bevel gear 8374 drives the first bevel gear 8372 to rotate, the first bevel gear 8372 drives the nut seat 8371 to rotate in the first rotating groove, the nut seat 8371 drives the hole-shaped latch 8373 to move in the through groove, when the arc plate 833 rotates halfway, the hole-shaped latch 8373 slides out of the through groove, and when one end of the arc plate 833 rests on the limit plate 834, the hole-shaped latch 8373 is inserted from the hole of the arc plate 833.

[0041] Working principle of the present invention:

[0042] When the clamping component is in operation, the control system controls the second motor 836 to start, and the output shaft of the second motor 836 drives the second rotating shaft to rotate, and the second rotating shaft drives the first transmission gear 8351 and the third gear 8355 to rotate, and the first transmission gear 8351 drives the second belt 8354 to rotate, and the second belt 8354 drives the second transmission gear 8352 and the third transmission gear 8353 to rotate, and the third transmission gear 8353 drives the third rotating shaft to rotate, and the third rotating shaft drives the rotating block 8356 to rotate, and the rotating block 8356 drives the pawl to rotate around the third rotating shaft. At this time, the pawl slides on the second ratchet, and the third gear 8355 drives the second gear to rotate, and the second gear drives the arc plate 833 to slide on the arc block 832, and the second transmission gear 8352 drives the fourth rotating shaft to rotate, and the fourth rotating shaft drives the rotating block 8356 to rotate. The shaft drives the fifth transmission gear 8376 to rotate, the fifth transmission gear 8376 drives the third belt 8377 to rotate, the third belt 8377 drives the fourth transmission gear 8375 to rotate, the fourth transmission gear 8375 drives the fifth rotating shaft to rotate, the fifth rotating shaft drives the second bevel gear 8374 to rotate, the second bevel gear 8374 drives the first bevel gear 8372 to rotate, the first bevel gear 8372 drives the nut seat 8371 to rotate in the first rotating groove, the nut seat 8371 drives the hole-shaped latch 8373 to move in the through groove, when the arc plate 833 rotates halfway, the hole-shaped latch 8373 slides out of the through groove, and when one end of the arc plate 833 rests on the limit plate 834, the hole-shaped latch 8373 is inserted from the hole of the arc plate 833, controlling the second motor 836 to stop.

[0043] When the component is clamped, the control system controls the first motor 6 to start, the first motor 6 drives the second transmission wheel 47 to rotate, the second transmission wheel 47 drives the first belt 46 to rotate, the first belt 46 drives the first transmission wheel 45 to rotate, the first transmission wheel 45 drives the transmission shaft 41 to rotate, the transmission shaft 41 drives the sprocket 42 to rotate, the sprocket 42 drives the chain 9 to rotate, the chain 9 drives the mounting plate 82 to move, the mounting plate 82 drives the sliding on the limiting column 81, the mounting plate 82 drives the holding ring device 83 to move, and the holding ring device 83 drives the component to move.

[0044] When the component moves to the specified position, when it is necessary to loosen the component, the output shaft of the second motor 836 is controlled to reverse, the second motor 836 drives the second rotating shaft to reverse, the second rotating shaft drives the first transmission gear 8351 and the third gear 8355 to reverse, the first transmission gear 8351 drives the second belt 8354 to reverse, the second belt 8354 drives the second transmission gear 8352 and the third transmission gear 8353 to reverse, the third transmission gear 8353 drives the third rotating shaft to reverse, the third rotating shaft drives the rotating block 8356 to reverse, and the rotating block 8356 drives the pawl to rotate around the third rotating shaft Reverse, at this time the pawl rests on the second ratchet, the pawl drives the second ratchet to rotate, the second ratchet drives the half gear 8357 to rotate, the second transmission gear 8352 drives the fourth shaft to reverse, when the hole-shaped pin 8373 withdraws from the hole of the arc plate 833, the half gear 8357 starts to drive the second gear to reverse, the second gear drives the arc plate 833 to reverse, when the arc plate 833 rotates halfway, the hole-shaped pin 8373 enters the through groove, until the arc plate 833 returns to the initial position, when the limit plate 834 rests on the bottom of the limit groove, the second motor 836 is controlled to stop.

[0045] When an emergency such as power outage or sudden failure occurs, the electromagnet is powered off, the counterweight 435 slides downward, the counterweight 435 drives the sliding belt 436 to slide on the fixed wheel 434, the sliding belt 436 drives the rolling wheel 4372 to rotate, the rolling wheel 4372 drives the first rotating shaft 4373 to rotate, the first rotating shaft 4373 drives the first gear 4374 to rotate, the first gear 4374 drives the rack 4375 to slide, the rack 4375 slides on the U-shaped plate 2 in the direction close to the first ratchet 4377, the rack 4375 drives the locking block 4376 to move until the locking block 4376 is stuck on the first ratchet 4377, and the first ratchet 4377 drives the transmission shaft 41 to stop rotating.

[0046] When the transmission shaft 41 breaks through the restriction of the limit device 43, the component accelerates to descend, and the component drives the ring device 83 to move, and the ring device 83 drives the chain 9 to move, and the chain 9 drives the sprocket 42 to rotate, and the sprocket 42 drives the transmission shaft 41 to rotate faster, and the transmission shaft 41 drives the brake housing 441 to rotate rapidly. The centrifugal force generated causes the first spring 444 to stretch, and the first spring 444 drives the rolling block 445 to move in the direction close to the brake block 443, and the rolling block 445 drives the guide column to slide in the transmission shaft 41, and the rolling block 445 abuts on the inner side of the brake block 443. The rolling block 445 drives the brake block 443 to slide on the limit block 442, and the brake block 443 abuts on the inner wall of the brake housing 441, generating friction to brake the transmission shaft 41. This double safety guarantee can avoid equipment damage or personal injury caused by the uncontrolled falling of components as much as possible.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A limited-position lifting device for ships with a hole-type holding ring function, characterized in that: The lifting device comprises a workbench (1), a U-shaped plate (2) and a support frame (5) are installed on one side of the workbench (1), a support plate (3) is installed on one side of the U-shaped plate (2), a transmission device (4) is rotatably connected to the support plate (3), a chain (9) is installed on the transmission device (4), a counterweight plate (7) is installed at one end of the chain (9), the counterweight plate (7) slides inside the U-shaped plate (2), a lifting device (8) is installed at the other end of the chain (9), a first motor (6) is installed on one side of the support frame (5), an output shaft of the first motor (6) is installed on the transmission device (4), and the first motor (6) is connected to a control system; The transmission device (4) includes a transmission shaft (41), and a limiting device (43) is installed below the transmission shaft (41); The limiting device (43) includes a base plate (431), the base plate (431) is mounted on the U-shaped plate (2), a first side plate (432) and a locking structure (437) are mounted on one side of the base plate (431), a connecting column (433) is mounted on the first side plate (432), a fixed wheel (434) is mounted on one end of the connecting column (433), a sliding belt (436) is slidably connected to the fixed wheel (434), a counterweight (435) is mounted on one end of the sliding belt (436), an electromagnet is mounted on the outer side of the first side plate (432), the other end of the sliding belt (436) is mounted on the locking structure (437), and the electromagnet is connected to the control system.

2. A position-limiting lifting device for ships with a hole-type holding ring function according to claim 1, characterized in that: The transmission shaft (41) is rotatably connected to the support plate (3), a sprocket (42) is mounted on the transmission shaft (41), the chain (9) and the sprocket (42) are meshed, the limiting device (43) is mounted on the U-shaped plate (2), a braking device (44) is mounted on one end of the transmission shaft (41), a first transmission wheel (45) is mounted on the other end of the transmission shaft (41), a second transmission wheel (47) is mounted on the output shaft of the first motor (6), and a first belt (46) is mounted on the first transmission wheel (45) and the second transmission wheel (47).

3. A position-limiting lifting device for ships with a hole-type holding ring function according to claim 2, characterized in that: The locking structure (437) includes a second side plate (4371), the second side plate (4371) is mounted on the bottom plate (431), the second side plate (4371) is rotatably connected to a first rotating shaft (4373), the first rotating shaft (4373) is mounted with a rolling wheel (4372) and a first gear (4374), one end of the sliding belt (436) is mounted on the rolling wheel (4372), the U-shaped plate (2) is slidably connected to a rack (4375), one end of the rack (4375) is connected to a locking block (4376), a first ratchet (4377) is mounted on the transmission shaft (41), and the locking block (4376) is located below the first ratchet (4377).

4. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 3, characterized in that: The braking device (44) includes a brake housing (441), the brake housing (441) is mounted on the transmission shaft (41), a limit block (442) is mounted inside the brake housing (441), a brake block (443) is slidably connected to the limit block (442), a guide column is slidably connected to the transmission shaft (41), a rolling block (445) is mounted on one end of the guide column, a first spring (444) is mounted on one end of the rolling block (445), the other end of the first spring (444) is mounted on the transmission shaft (41), and the first spring (444) is sleeved on the guide column.

5. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 4, characterized in that: The lifting device (8) comprises a limiting column (81), one end of which is mounted on the inner side of the U-shaped plate (2), and the other side of which is mounted on the workbench (1). A slider is slidably connected to the limiting column (81), a mounting plate (82) is mounted on one side of the slider, and a ring device (83) is mounted on one side of the mounting plate (82).

6. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 5, characterized in that: The holding ring device (83) comprises a connecting block (831), the connecting block (831) being mounted on a mounting plate (82), a sliding structure (837) being mounted in the connecting block (831), an arc block (832) being mounted on one side of the connecting block (831), a second gear being mounted on one end of the arc block (832), the arc block (832) being slidably connected to an arc plate (833), a limiting groove being provided on the arc plate (833), a limiting plate (834) being mounted on the inner side of the arc block (832), a rotating structure (835) being mounted in the arc block (832), a second motor (836) being mounted on one end of the arc block (832), and the second motor (836) being connected to a control system.

7. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 6, characterized in that: The rotating structure (835) includes a first transmission gear (8351), an arc-shaped groove is provided inside the arc-shaped block (832), the first transmission gear (8351) is installed in the arc-shaped groove, a second rotating shaft is installed on the first transmission gear (8351), the second rotating shaft is installed on the output shaft of the second motor (836), a second transmission gear (8352) and a third transmission gear (8353) are installed in the arc-shaped groove, a third rotating shaft is installed on the second transmission gear (8352), a fourth rotating shaft is installed on the third transmission gear (8353), one end of the fourth rotating shaft is installed on the sliding structure (837), and the first transmission gear (835) is installed in the arc-shaped groove. 1) A second belt (8354) is installed on the second transmission gear (8352) and the third transmission gear (8353), a third gear (8355) is installed on one end of the second rotating shaft, the third gear (8355) is meshed with the second gear, a rotating block (8356) is installed on one end of the third rotating shaft, a pawl is installed on the outer wall of the rotating block (8356), a second spring is installed between the pawl and the rotating block (8356), a half gear (8357) is installed on one side of the arc block (832), the half gear (8357) is meshed with the second gear, a second ratchet is installed inside the half gear (8357), and the pawl is against the second ratchet.

8. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 7, characterized in that: The sliding structure (837) includes a hole-shaped latch (8373), a through groove, a first rotation groove and a second rotation groove are provided inside the connecting block (831), the hole-shaped latch (8373) slides in the through groove, the outer wall of the hole-shaped latch (8373) is rotatably connected to a nut seat (8371), the nut seat (8371) rotates in the first rotation groove, a first bevel gear (8372) is installed on one side of the nut seat (8371), a second bevel gear (8374) is rotatably connected in the second rotation groove, the first bevel gear (8372) and the second bevel gear (8374) are meshed, a fifth rotating shaft is installed on the second bevel gear (8374), one end of the fifth rotating shaft is installed with a fourth transmission gear (8375), one end of the fourth rotating shaft is installed with a fifth transmission gear (8376), and a third belt (8377) is installed on the fourth transmission gear (8375) and the fifth transmission gear (8376).

9. The position-limiting lifting device for ships with a hole-type holding ring function according to claim 8, characterized in that: The outer side of the brake block (443) is made of a material with a high friction coefficient, and the outer surface of the hole-shaped latch (8373) is provided with a thread.

Images