Personnel lifting device for ship building and repairing

Abstract

The invention provides a personnel lifting device for ship building and repairing. The personnel lifting device comprises a rope, a lifting driving mechanism, a personnel bearing mechanism and an anti-falling mechanism. The upper end of the personnel bearing mechanism is connected with the lifting driving mechanism, and the anti-falling mechanism is connected to the lower end of the personnel bearing mechanism; the upper end of the rope is used for being fixed to a ship body, and the lower end of the rope sequentially penetrates through the lifting driving mechanism, the personnel bearing mechanism and the anti-sliding-falling mechanism and then extends out of the lower end of the anti-sliding-falling mechanism. According to the invention, a worker can quickly reach the maintenance platform, so that convenience is brought to the worker to go up and down the maintenance platform.

Description

Technical Field

[0001] This invention relates to the technical field of personnel lifting devices for ship repair and construction, and more specifically, to a personnel lifting device for ship repair and construction. Background Technology

[0002] Currently, when repairing cargo ships, due to their generally large size, a repair platform needs to be built in the repair area to facilitate subsequent repairs by staff. After the repair platform is built, staff currently climb to it using rope ladders suspended from the hull. However, due to the large size of the cargo ship, staff need to climb a considerable distance along the rope ladder to reach the repair platform, which presents the disadvantage of inconvenience for staff to access the repair platform. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a personnel lifting device for ship repair and construction, which enables workers to quickly reach the repair platform, thus facilitating workers to get on and off the repair platform.

[0004] This invention provides a personnel lifting device for ship repair and construction, including a rope, a lifting drive mechanism, a personnel carrying mechanism, and an anti-slip mechanism; the upper end of the personnel carrying mechanism is connected to the lifting drive mechanism, and the anti-slip mechanism is connected to the lower end of the personnel carrying mechanism; the upper end of the rope is used to fix it to the hull, and the lower end of the rope passes through the lifting drive mechanism, the personnel carrying mechanism, and the anti-slip mechanism in sequence and then extends out from the lower end of the anti-slip mechanism.

[0005] With the above-described structure, this invention allows workers to fix the upper end of the rope to the ship's hull, for example, by fixing the upper end of the rope to the deck. Workers can then be carried onto the personnel carrying mechanism, which, via a lifting drive mechanism, moves the personnel carrying mechanism up and down the rope, enabling workers to quickly reach the maintenance platform. This facilitates workers' access to and from the maintenance platform. Furthermore, the invention incorporates an anti-slip mechanism; if the lifting drive mechanism malfunctions, the personnel carrying mechanism can remain suspended on the rope, eliminating the risk of workers falling.

[0006] In one possible implementation, the personnel carrying mechanism includes a telescopic tube assembly in which a rope is movably threaded. The telescopic tube assembly includes an inner tube and an outer tube. Two symmetrical handles are connected to the outer wall of the upper part of the inner tube, and two symmetrical foot pedals are fixed to the outer wall of the lower end of the outer tube. The upper end of the inner tube is fixed to a lifting drive mechanism, and the lower end of the inner tube is inserted into the upper end of the outer tube and can extend and retract relative to the outer tube. An anti-slip mechanism is connected to the lower end of the outer tube.

[0007] In one possible implementation, the anti-slip mechanism includes a support ring connected to the lower end of the outer tube and capable of floating up and down relative to the outer tube; a rubber friction ring is fixed on the inner circumferential wall of the support ring, and a rope is threaded through the rubber friction ring, with the inner circumferential wall of the rubber friction ring fitting against the outer circumferential wall of the rope; an annular conical surface, narrow at the top and wide at the bottom, is formed on the inner wall of the lower end of the outer tube, and a plurality of elastic clips are provided on the upper end face of the support ring at circumferential intervals, with the upper end of each elastic clip inserted into the lower end of the outer tube and abutting against the annular conical surface.

[0008] In one possible implementation, the anti-slip mechanism further includes several bolts spaced apart along the circumferential direction of the support ring; the threaded portion of each bolt moves through the support ring and is threadedly fastened to the lower end of the outer tube; a spring is sleeved on the outside of the threaded portion of each bolt; and both ends of each spring abut against the lower end of the outer tube and the upper end of the support ring.

[0009] In one possible implementation, a pipe clamp is fixed to the upper end of the outer tube, and the upper end of the outer tube is held tightly to the inner tube by the pipe clamp; two left-right symmetrical sliding rods are fixed to the lower end of the inner tube, both sliding rods extending along the radial direction of the inner tube; two left-right symmetrical sliding holes are provided on the side wall of the outer tube, each sliding hole extending along the axial direction of the outer tube, and each sliding rod is vertically slidably fitted in the corresponding side sliding hole.

[0010] In one possible implementation, the inner ends of both grips are rotatably connected to the outer wall of the inner tube. A torsion spring is provided between the inner end of each grip and the inner tube. A ratchet is provided on the top surface of the inner end of each grip. An opening corresponding to the two ratchet teeth is provided on the side wall of the inner tube. The opening is used to allow the ratchet teeth on the corresponding side to enter into or exit from the inner tube. When the grip is released, the torsion spring is used to drive the grip to flip upward so that the ratchet teeth enter into the inner tube through the opening on the corresponding side and engage with the outer wall of the rope.

[0011] In one possible implementation, control buttons are fixed to the front of both grips. The two control buttons are used to control the raising and lowering of the lifting drive mechanism, respectively. Proximity switches are fixed on the outer wall of the inner tube body located below the two grips. The two control buttons and the two proximity switches are electrically connected to the controller located in the lifting drive mechanism. When the hand grips the grip and flips the grip downward, the two proximity switches are triggered by the grips on the corresponding sides.

[0012] In one possible implementation, the lifting drive mechanism includes a housing assembly, a self-locking motor, a rope pulley, and two guide pulleys. The upper end of the inner tube is fixed to the middle of the lower end of the housing assembly. The self-locking motor is fixed to the rear outer wall of the housing assembly. The output shaft of the self-locking motor extends into the interior of the housing assembly and is coaxially fixed to the rope pulley. Both guide pulleys are rotatably connected to the inner side of the housing assembly. The two guide pulleys are located above and below the rope pulley, respectively. Both guide pulleys are offset inward relative to the rope pulley. The lower end of the rope extends from the middle of the upper end of the housing assembly and sequentially passes through one guide pulley, the rope pulley, and the other guide pulley before extending into the inner tube from the middle of the lower end of the housing assembly. The controller is fixed to the inner wall of the housing assembly, and the self-locking motor is electrically connected to the controller.

[0013] In one possible implementation, the lifting drive mechanism further includes a servo motor, two gears, and two rotating arms. The two rotating arms are symmetrically arranged on both sides of the rope located in the housing assembly. The lower ends of both rotating arms are rotatably connected to the inner wall of the housing assembly, and the upper ends of both rotating arms form ratchet ends. The two gears are respectively coaxially fixed to the rotation center of one of the rotating arms, and the two gears mesh with each other. The servo motor is fixed to the rear outer wall of the housing assembly, and the output shaft of the servo motor extends into the housing assembly and is coaxially fixed and connected to one of the gears for transmission. The servo motor is electrically connected to the controller. When the lifting drive mechanism stops lifting, the servo motor is used to drive the two rotating arms to rotate, so that the ratchet ends of the two rotating arms approach each other and mesh with the outer wall of the rope.

[0014] In one possible implementation, a hanging ring is fixed to the outer wall of the front side of the housing assembly, the hanging ring being used to engage with a safety buckle located on a person. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 for Figure 2 A magnified structural diagram of point A in the middle; Figure 4 for Figure 2 A magnified structural diagram of point B in the middle; Figure 5 for Figure 2 A magnified structural diagram of point C in the middle; Figure 6 This is a schematic diagram of the left-side structure after the first and second self-locking electrodes are fixed to the housing assembly. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] See Figures 1-6 As shown in the embodiment of this application, a personnel lifting device for ship repair and construction is disclosed, including a rope 1, a lifting drive mechanism 2, a personnel carrying mechanism 3, and an anti-slip mechanism 4; the upper end of the personnel carrying mechanism 3 is connected to the lifting drive mechanism 2, and the anti-slip mechanism 4 is connected to the lower end of the personnel carrying mechanism 3; the upper end of the rope 1 is used to fix it to the hull, and the lower end of the rope 1 passes through the lifting drive mechanism 2, the personnel carrying mechanism 3, and the anti-slip mechanism 4 in sequence and then extends out from the lower end of the anti-slip mechanism 4.

[0021] The personnel carrying mechanism 3 includes a telescopic tube assembly 31, through which a rope 1 is movably threaded. The telescopic tube assembly 31 includes an inner tube 311 and an outer tube 312. Two symmetrically arranged handles 32 are connected to the upper outer wall of the inner tube 311, and two symmetrically arranged foot pedals 33 are fixed to the lower outer wall of the outer tube 312. The upper end of the inner tube 311 is fixed to the lifting drive mechanism 2, and the lower end of the inner tube 311 is inserted into the upper end of the outer tube 312 and can extend and retract relative to the outer tube 312. An anti-slip mechanism 4 is connected to the lower end of the outer tube 312. With this personnel carrying mechanism, when the staff uses the personnel lifting device normally, the staff's feet can step on the two foot pedals respectively, and at the same time, the staff's hands can grip the two handles respectively, so that the personnel carrying mechanism can carry the staff. In addition, when staff of different heights use the personnel lifting device, the distance between the handles and foot pedals can be adjusted by adjusting the length of the telescopic tube assembly (that is, by adjusting the distance between the handles and foot pedals by the extension and retraction of the inner tube relative to the outer tube), so that the personnel carrying mechanism can adapt to staff of different heights.

[0022] The anti-slip mechanism 4 includes a support ring 41, which is connected to the lower end of the outer tube 312 and can float up and down relative to the outer tube 312. A rubber friction ring 42 is fixed on the inner circumferential wall of the support ring 41, and a rope 1 is threaded through the rubber friction ring 42. The inner circumferential wall of the rubber friction ring 42 is in contact with the outer circumferential wall of the rope 1. An annular conical surface 313 with a narrow top and a wide bottom is formed on the inner wall of the lower end of the outer tube 312. Several elastic clips 411 are arranged circumferentially at intervals on the upper end surface of the support ring 41. The upper end of each elastic clip 411 is inserted into... The support ring is inserted into the lower end of the outer tube 312 and abuts against the annular conical surface 313. By employing this anti-slip mechanism, during the normal lifting and lowering process of the personnel carrying mechanism along the rope by the lifting drive mechanism, the friction force generated between the rubber friction ring and the rope is relatively small. Therefore, the support ring will not float up and down relative to the outer tube, or in other words, the amount of float of the support ring relative to the outer tube is small. If the lifting drive mechanism malfunctions and causes the personnel carrying mechanism to slide down the rope, the personnel carrying mechanism and the anti-slip mechanism will slide down the rope at a relatively high speed. This increases the friction between the rubber friction ring and the rope. Due to this friction, the support ring can float upwards relative to the outer tube. Each elastic clip can then be inserted further into the lower end of the outer tube. Because the inner wall of the lower end of the outer tube forms a conical surface that is narrower at the top and wider at the bottom, this conical surface compresses several elastic clips, causing their upper ends to shift inwards and grip the outer wall of the rope. This acts as a brake on the personnel support mechanism. After the elastic clips grip the outer wall of the rope and stop the personnel support mechanism from falling, the conical surface maintains the clips' grip on the rope, ensuring continuous protection against falls and eliminating the risk of worker falls. At this point, the worker can wait for rescue. Furthermore, when the rubber friction ring wears down after a period of use, the rubber friction ring and support ring can be replaced to ensure the effectiveness of the anti-slip mechanism.

[0023] The anti-slip mechanism 4 also includes several bolts 43 spaced apart along the circumferential direction of the support ring 41; the threaded portion of each bolt 43 passes through the support ring 41 and is threadedly fastened to the lower end of the outer tube 312; a spring 44 is sleeved on the outside of the threaded portion of each bolt 43, and both ends of each spring 44 abut against the lower end of the outer tube 312 and the upper end of the support ring 41; with this structure, under the action of several bolts, the support ring can be reliably connected to the lower end of the outer tube, and under the action of the springs, during the process of the lifting drive mechanism driving the personnel carrying mechanism to rise and fall along the rope at normal speed, the springs can apply elastic force to the support ring, so that the support ring... The system remains in the lower limit position. When the lifting drive mechanism malfunctions and the personnel carrying mechanism falls down the rope, the increased friction between the rubber friction ring and the rope allows the support ring to overcome the spring force and generate a large upward floating displacement relative to the outer tube. At this time, each elastic clip can be further inserted into the lower end of the outer tube from bottom to top. Since the inner wall of the lower end of the outer tube forms a ring-shaped cone that is narrow at the top and wide at the bottom, the ring-shaped cone can squeeze several elastic clips, causing the upper ends of several elastic clips to shift inward and hold tightly against the outer wall of the rope. This can thus brake the personnel carrying mechanism and eliminate the risk of workers falling.

[0024] A pipe clamp 34 is fixedly fitted to the upper end of the outer tube 312, and the upper end of the outer tube 312 is held tightly to the inner tube 311 by the pipe clamp 34. Two symmetrical sliding rods 35 are fixed to the lower end of the inner tube 311, both extending radially along the inner tube 311. Two symmetrical sliding holes 314 are provided on the side wall of the outer tube 312, each extending axially along the outer tube 312. Each sliding rod 35 slides vertically in the corresponding sliding hole 314. With this structure, when it is necessary to adjust the length of the telescopic tube assembly to accommodate different heights of workers, the pipe clamp can be operated to release the clamp from the inner and outer tubes. At this time, the inner tube can extend or retract relative to the outer tube. This allows for adjustment of the distance between the handlebars and pedals, adapting to different user heights. After the telescopic tube assembly is adjusted, the inner and outer tubes are secured again using a tube clamp. This clamp is identical to those currently used in bicycles to lock the saddle tube and frame, and is existing technology, so it will not be elaborated upon here. Furthermore, through the sliding rod and sliding hole, the sliding rod can slide along the length of the sliding hole during the extension and retraction of the inner tube relative to the outer tube. When the contraction or extension of the inner tube relative to the outer tube reaches its limit, the sliding rod abuts against one or the other end of the sliding hole, thereby limiting the extension and retraction of the inner and outer tubes and effectively preventing the inner tube from detaching from the outer tube.

[0025] The inner ends of both grips 32 are rotatably connected to the outer wall of the inner tube 311. A torsion spring is provided between the inner end of each grip 32 and the inner tube 311. A ratchet 321 is provided on the top surface of the inner end of each grip 32. An opening 315 corresponding to the two ratchet 321 is provided on the side wall of the inner tube 311. The opening 315 is used to allow the corresponding ratchet 321 to enter into or exit from the inner tube 311. When the grip 32 is released, the torsion spring is used to drive the grip 32 to rotate upward so that the ratchet 321 passes through... The opening 315 on the corresponding side enters the inner tube 311 and engages with the outer wall of the rope 1. With this structure, when the personnel carrying mechanism does not need to be raised or lowered, and after the handle is released, both handles can be flipped upwards under the action of the torsion spring. At this time, the ratchet teeth on both handles can enter the inner tube through the opening on the corresponding side and engage with the outer wall of the rope, thereby locking the personnel carrying mechanism and the rope. This further prevents the personnel carrying mechanism from slipping relative to the rope and eliminates safety hazards.

[0026] Control buttons 36 are fixed to the front of each of the two grips 32. These two control buttons 36 are used to control the raising and lowering of the lifting drive mechanism 2, respectively. Proximity switches 37 are fixed to the outer wall of the inner tube 311 located below the two grips 32. Both control buttons 36 and proximity switches 37 are electrically connected to the controller 5 located in the lifting drive mechanism 2. When a hand grips the grip 32 and flips it downwards, the two proximity switches 37 are triggered by the corresponding grip 32 side. With this structure, when a hand grips the grip and flips it downwards, the two proximity switches can be triggered by the corresponding grip side. In this case, when the operator presses... When one of the control buttons is pressed, the lifting drive mechanism, under the control of the controller, can drive the personnel carrying mechanism to move upward along the rope. When the worker presses the other control button, the lifting drive mechanism, under the control of the controller, can drive the personnel carrying mechanism to move downward along the rope, thus realizing the lifting and lowering of the personnel carrying mechanism. When the handle is released, the handle can flip upward under the action of the torsion spring. At this time, the proximity switch cannot be triggered by the handle. In this state, even if the control button is pressed, the controller will not drive the lifting drive mechanism to work, thereby preventing the lifting drive mechanism from accidentally driving the personnel carrying mechanism to lift and lower, eliminating safety hazards.

[0027] The lifting drive mechanism 2 includes a housing assembly 21, a self-locking motor 22, a rope pulley 23, and two guide wheels 24. The upper end of the inner tube 311 is fixed to the middle of the lower end of the housing assembly 21. The self-locking motor 22 is fixed to the rear outer wall of the housing assembly 21. The output shaft of the self-locking motor 22 extends into the interior of the housing assembly 21 and is coaxially fixed to the rope pulley 23. The two guide wheels 24 are rotatably connected to the inner side of the housing assembly 21. The two guide wheels 24 are located above and below the rope pulley 23, respectively. The two guide wheels 24 are offset inward relative to the rope pulley 23. The lower end of the rope 1 extends from the middle of the upper end of the housing assembly 21 and sequentially winds around it. A guide wheel 24, a rope wheel 23, and another guide wheel 24 extend from the middle of the lower end of the housing assembly 21 into the inner tube 311; the controller 5 is fixed to the inner wall of the housing assembly 21, and the self-locking motor 22 is electrically connected to the controller 5; by adopting this lifting drive mechanism, when the self-locking motor drives the rope wheel to rotate forward under the control of the controller, the lifting drive mechanism can drive the personnel carrying mechanism to move upward along the rope; when the self-locking motor drives the rope wheel to rotate in the reverse direction under the control of the controller, the lifting drive mechanism can drive the personnel carrying mechanism to move downward along the rope; when the self-locking motor stops driving the rope wheel to rotate, the personnel carrying mechanism is moved downward. The self-locking motor has a self-locking state, which prevents the rope pulley from rotating freely, thus keeping the rope pulley in a taut state with the rope. This allows the lifting drive mechanism and the personnel carrying mechanism to be suspended on the rope, preventing the personnel carrying mechanism from falling. Furthermore, because the two guide wheels are located above and below the rope pulley respectively, and both guide wheels are offset inward relative to the rope pulley, the lower end of the rope extends from the middle of the upper end of the housing assembly and sequentially wraps around one guide wheel, the rope pulley, and the other guide wheel before extending into the inner tube from the middle of the lower end of the housing assembly. This ensures the effectiveness of the rope winding around the rope pulley, i.e., under the drive of the self-locking motor... When the moving rope pulley rotates, it ensures the engagement between the pulley and the rope, guaranteeing the effectiveness of the lifting drive mechanism in moving the personnel carrying mechanism upward along the rope. Similarly, when the self-locking motor stops driving the pulley's rotation, it ensures the engagement between the pulley and the rope, ensuring the lifting drive mechanism and the personnel carrying mechanism are reliably suspended on the rope. The bottom of the aforementioned housing assembly has a wire hole for the connection wires of the control buttons and proximity switches to the controller, facilitating electrical connection between the control buttons and proximity switches and the controller. Additionally, the controller's power cord can also be introduced into the housing assembly through the wire hole and electrically connected to the controller.

[0028] The lifting drive mechanism 2 also includes a servo motor 25, two gears 26, and two rotating arms 27. The two rotating arms 27 are symmetrically arranged on both sides of the rope 1 located in the housing assembly 21. The lower ends of both rotating arms 27 are rotatably connected to the inner wall of the housing assembly 21, and the upper ends of both rotating arms 27 form ratchet ends. The two gears 26 are respectively coaxially fixed to the rotation center of one of the rotating arms 27, and the two gears 26 mesh with each other. The servo motor 25 is fixed to the rear outer wall of the housing assembly 21. The output shaft of the servo motor 25 extends into the housing assembly 21 and is coaxially fixed and connected to one of the gears 26 for transmission. The servo motor 25 is electrically connected to the controller 5. When the lifting drive mechanism 2 stops lifting, the servo motor 25 drives the two rotating arms 27 to rotate, causing the ratchet ends of the two rotating arms 27 to approach each other and bite. The two rotating arms are engaged on the outer wall of rope 1. With this structure, when the control button on the handle is released to stop the lifting drive mechanism from lifting the personnel carrying mechanism relative to the rope, the servo motor can drive the two rotating arms to rotate under the control of the controller, so that the ratchet ends of the two rotating arms approach each other and engage with the outer wall of the rope. This can further prevent the lifting drive mechanism and the personnel carrying mechanism from falling accidentally, eliminating safety hazards. When the control button on the handle is operated to make the lifting drive mechanism lift the personnel carrying mechanism relative to the rope, the servo motor can drive the two rotating arms to rotate in the opposite direction under the control of the controller, so that the ratchet ends of the two rotating arms move away from each other to release the ratchet ends from the rope. At this time, the lifting drive mechanism can reliably drive the personnel carrying device to lift along the rope.

[0029] A hanging ring 28 is fixed on the outer wall of the front side of the housing assembly 21. The hanging ring 28 is used to engage with the safety buckle located on the person's body. With this structure, the worker can engage the safety buckle on the safety belt connected to the person's body with the hanging ring, thereby preventing the worker from falling from the personnel carrying mechanism and effectively eliminating safety hazards.

[0030] In normal use, the upper end of the rope is fixed to the hull, for example, to the deck of the hull. Then, the lifting drive mechanism, personnel carrying mechanism, anti-slip mechanism, and lower end of the rope are placed on the outside of the hull. The worker can then step on the two foot pedals and hold the two handles. The worker can then move up and down along the rope using the lifting drive mechanism to quickly reach the area of ​​the hull that needs repair, such as the repair platform built on the hull repair area.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A personnel hoist for use in ship repair, characterised in that: The utility model provides a kind of personnel carrying device, including rope (1), lifting drive mechanism (2), personnel carrying mechanism (3) and anti-skid mechanism (4);The upper end of personnel carrying mechanism (3) is connected with lifting drive mechanism (2), and the lower end of personnel carrying mechanism (3) is connected with anti-skid mechanism (4);The upper end of rope (1) is used to be fixed with ship body, and the lower end of rope (1) is sequentially threaded through lifting drive mechanism (2), personnel carrying mechanism (3) and anti-skid mechanism (4) and then extends from the lower end of anti-skid mechanism (4).

2. Personnel lifting device for shipbuilding, according to claim 1, characterized in that: The personnel carrying mechanism (3) includes telescopic tube assembly (31), and the rope (1) is movably threaded in the telescopic tube assembly (31);The telescopic tube assembly (31) includes inner tube body (311) and outer tube body (312), two left-right symmetrical handles (32) are connected to the outer wall of the upper part of the inner tube body (311), and two left-right symmetrical foot pedals (33) are fixed to the outer wall of the lower end of the outer tube body (312);The upper end of the inner tube body (311) is fixed with the lifting drive mechanism (2), and the lower end of the inner tube body (311) is inserted into the upper end of the outer tube body (312) and can be telescopic relative to the outer tube body (312), and the lower end of the outer tube body (312) is connected with the anti-skid mechanism (4).

3. Personnel lifting device for shipbuilding, according to claim 2, characterized in that: The anti-skid mechanism (4) includes a support ring (41), which is connected to the lower end of the outer tube body (312) and can float up and down relative to the outer tube body (312);A rubber friction ring (42) is fixed to the inner circumferential wall of the support ring (41), the rope (1) is threaded in the rubber friction ring (42), and the inner circumferential wall of the rubber friction ring (42) is in close contact with the outer circumferential wall of the rope (1);An annular taper (313) with a narrow upper part and a wide lower part is formed on the inner wall of the lower end of the outer tube body (312), and a plurality of elastic clamping pieces (411) are arranged on the upper end face of the support ring (41) and spaced apart in the circumferential direction, and the upper end of each elastic clamping piece (411) is inserted into the lower end of the outer tube body (312) and abuts against the annular taper (313).

4. Personnel lifting device for shipbuilding, according to claim 3, characterized in that: The anti-skid mechanism (4) further includes a plurality of bolts (43) spaced apart in the circumferential direction of the support ring (41);The screw rod of each bolt (43) is movably threaded through the support ring (41) and is threadedly fastened to the lower end of the outer tube body (312), and the outer part of the screw rod of each bolt (43) is sleeved with a spring (44), and the two ends of each spring (44) abut against the lower end of the outer tube body (312) and the upper end of the support ring (41).

5. Personnel lifting device for shipbuilding, according to any of the claims 2-4, characterized in that: The outer sleeve body (312) is sleeved and fixed with a pipe clamp (34) on the outer side of the upper end, and the upper end of the outer sleeve body (312) is clamped on the inner sleeve body (311) through the pipe clamp (34); the lower end of the inner sleeve body (311) is fixed with two left and right symmetrical slide rods (35), and the two slide rods (35) extend along the radial direction of the inner sleeve body (311); the side wall of the outer sleeve body (312) is provided with two left and right symmetrical slide holes (314), each of the slide holes (314) extends along the axial direction of the outer sleeve body (312), and each of the slide rods (35) is vertically and slidingly connected in the corresponding slide hole (314).

6. Personnel lifting device for shipbuilding, according to any of the claims 2-4, characterized in that: The inner end of each of the two handles (32) is rotationally connected with the outer side wall of the inner sleeve body (311), a torsion spring is arranged between the inner end of each handle (32) and the inner sleeve body (311), a ratchet (321) is arranged on the top surface of the inner end of each handle (32), and the side wall of the inner sleeve body (311) is provided with an opening (315) corresponding to the two ratchets (321), the opening (315) is used for allowing the corresponding ratchet (321) to enter or exit the inner sleeve body (311), and when the handle (32) is released, the torsion spring is used to drive the handle (32) to overturn upward so that the ratchet (321) enters the inner sleeve body (311) through the corresponding opening (315) and engages on the outer wall of the rope (1).

7. Personnel lifting device for shipbuilding, according to claim 6, characterized in that: The front side of each of the two handles (32) is fixed with a control button (36), the two control buttons (36) are respectively used to control the upward movement and the downward movement of the lifting driving mechanism (2), the outer wall of the inner sleeve body (311) below the two handles (32) is fixed with a proximity switch (37), and the two control buttons (36) and the two proximity switches (37) are electrically connected with the controller (5) in the lifting driving mechanism (2); when the handle (32) is held and the handle (32) is overturned downward, the two proximity switches (37) are triggered by the corresponding handle (32).

8. Personnel lifting device for shipbuilding, according to claim 7, characterized in that: The lifting driving mechanism (2) comprises a shell assembly (21), a self-locking motor (22), a rope wheel (23) and two guide wheels (24); the upper end of the inner tube body (311) is fixed to the middle part of the lower end of the shell assembly (21), the self-locking motor (22) is fixed to the rear outer wall of the shell assembly (21), the output shaft of the self-locking motor (22) extends into the inside of the shell assembly (21) and is coaxially fixed with the rope wheel (23), the two guide wheels (24) are both rotationally connected to the inner side of the shell assembly (21), the two guide wheels (24) are respectively located above and below the rope wheel (23), the two guide wheels (24) are both inwardly offset relative to the rope wheel (23), the lower end of the rope (1) extends into the inner tube body (311) from the middle part of the upper end of the shell assembly (21) and sequentially passes through one of the guide wheels (24), the rope wheel (23) and the other guide wheel (24) and then extends into the inner tube body (311) from the middle part of the lower end of the shell assembly (21); the controller (5) is fixed to the inner wall of the shell assembly (21), and the self-locking motor (22) is electrically connected with the controller (5).

9. Personnel lifting device for shipbuilding, according to claim 8, characterized in that: The lifting driving mechanism (2) further comprises a rudder (25), two gears (26) and two rotating arms (27); the two rotating arms (27) are symmetrically arranged on both sides of the rope (1) in the shell assembly (21), the lower end of each of the two rotating arms (27) is rotationally connected to the inner wall of the shell assembly (21), and the upper end of each of the two rotating arms (27) forms a ratchet end; the two gears (26) are coaxially fixed with the rotation centers of the two rotating arms (27) respectively, the two gears (26) are in mesh with each other, the rudder (25) is fixed to the rear outer wall of the shell assembly (21), the output shaft of the rudder (25) extends into the shell assembly (21) and is coaxially fixed with and transmissionally connected to one of the gears (26), and the rudder (25) is electrically connected with the controller (5); when the lifting driving mechanism (2) stops lifting, the rudder (25) is used to drive the two rotating arms (27) to rotate and make the ratchet ends of the two rotating arms (27) abut on and engage with the outer wall of the rope (1).

10. Personnel lifting device for shipbuilding, according to claim 8 or 9, characterized in that: A hanging ring (28) is fixed to the front outer wall of the shell assembly (21), and the hanging ring (28) is used to be buckled with a safety buckle on a person.

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