Small ship body hoisting maintenance frame

Abstract

The invention provides a small hull hoisting maintenance frame, and relates to the field of small hull hoisting maintenance. The small ship body hoisting maintenance frame comprises a chassis assembly, a hoisting assembly, a sliding lifting assembly, an angle adjusting assembly and a ship body matching assembly, the hoisting assembly is installed on one side of the chassis assembly, the sliding lifting assembly is arranged on the chassis assembly and can transversely slide along the chassis assembly, and the angle adjusting assembly is installed at the output end of the sliding lifting assembly. The ship body matching assembly is installed at the output end of the angle adjusting assembly and comprises a power box, two swing arms, a reinforcing disc, a hollow pipe and a driving wheel, and the ends, close to each other, of the two swing arms are both installed at the output end of the power box. According to the small hull hoisting maintenance frame, by arranging the sliding lifting assembly, the hull matching assembly and the angle adjusting assembly, stable hoisting can be achieved, manual auxiliary ship lifting is not needed, and by arranging the chassis assembly, an electric hoisting winch is conveniently matched to be connected with a hull.

Description

Technical Field

[0001] The invention relates to the field of small-sized ship hull hoisting and maintenance, in particular to a small-sized ship hull hoisting and maintenance frame. Background Art

[0002] Ship is a general term for various vessels. When repairing a small ship, it is usually necessary to use support equipment or lifting equipment to lift the ship.

[0003] Announcement No.: CN210419008U discloses a small hull hoisting and repairing frame, wherein a bottom reinforced cross-hanging rod is fixed on the first base, one end of the bottom reinforced cross-hanging rod is supported and installed with a column through a support rod, the column and the bottom reinforced cross-hanging rod are fixedly connected by an inclined beam, a first cross beam, a second cross beam and a third cross beam are fixed between the columns, an ear seat is fixed on the top side wall of the column, a rotating cross beam is hinged on the ear seat, a power device for driving rotation is installed between the rotating cross beam and the third cross beam, a hull pressing block is hinged at the bottom end of the rotating cross beam through a main telescopic cylinder and a secondary telescopic cylinder, a traction rope lifting device is installed on the column, the traction rope end of the traction rope lifting device passes through the center of the hull pressing block, and a lifting ring is connected at its end. The above-mentioned hoisting and repairing frame can assist in the maintenance of small hulls. During use, it can hoist the small hull, thereby facilitating its subsequent maintenance process.

[0004] This solution uses hooks to fix the hull, but in order to ensure lightweight manufacturing, most of the existing small hulls have eliminated the hanging points and the middle beam. Although it is a small hull, the weight of the hull is still difficult to lift by manpower, resulting in difficulty in passing the straps through the bottom of the hull during hoisting. Moreover, the bottom of the small hull without a hanging point beam is inclined and relatively smooth, resulting in the straps frequently slipping off the hull during hoisting. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a small hull hoisting and repairing frame, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a small hull hoisting and repairing frame, comprising a chassis assembly, a hoisting assembly, a sliding lifting assembly, an angle adjustment assembly and a hull matching assembly, wherein the hoisting assembly is installed on one side of the chassis assembly, the sliding lifting assembly is arranged on the chassis assembly and can slide laterally along the chassis assembly, the angle adjustment assembly is installed on the output end of the sliding lifting assembly, and the hull matching assembly is installed on the output end of the angle adjustment assembly; The hull matching assembly includes a power box, a swing arm, a reinforcement plate, a hollow tube and a driving wheel. There are two swing arms, and the ends of the two swing arms that are close to each other are installed on the output end of the power box. The power box is used to make the two swing arms close upward. There are two reinforcement plates, which are respectively fixed on the ends of the two swing arms away from the power box. There are two hollow tubes, which are respectively fixed to the two reinforcement plates. The other end of the hollow tube extends to a side away from the sliding lifting assembly. There are two groups of driving wheels, each group contains a number of driving wheels. The two groups of driving wheels are respectively installed on the two hollow tubes, and the driving wheels can actively rotate relative to the hollow tubes.

[0007] Preferably, the angle adjustment assembly includes a large gear, a small gear, a slide rail and a hydraulic cylinder A. There are two slide rails, one side of which is fixedly installed with a bracket, the large gear is located between the two brackets, and its main shaft passes through the two brackets and is rotatably connected to the brackets. One side of the principle slide rail of the bracket is fixedly installed with an extension frame, the small gear is located between the two extension frames, the main shaft of the small gear passes through the two extension frames and is respectively rotatably connected to the two extension frames, the small gear is meshed with the large gear, and there are two hydraulic cylinders A, which are respectively fixedly installed on the two slide rails, and a slider is slidably installed in the slide rail. The output end of the hydraulic cylinder A is fixedly connected to the slider, and the two sliders are fixed to the power box by an extended connecting frame.

[0008] Preferably, the sliding lifting assembly includes a sliding frame and a hydraulic cylinder B. There are two sliding frames, both of which are installed on the chassis assembly and slidably connected thereto. A servo motor A is installed on each sliding frame. A stepping gear is fixedly installed on the output shaft of the servo motor A. The stepping gear cooperates with the chassis assembly to drive the sliding frame to slide relative to the chassis assembly. There are two hydraulic cylinders B, one end of which is fixed to the sliding frame and the other end is tilted upward. An inclined rod is also fixedly installed on the sliding frame. The other end of the inclined rod is fixedly connected to the hydraulic cylinder B. The output end of the hydraulic cylinder B is fixedly installed with a mounting rod, which is fixed to the corresponding extension frame after being away from the output end of the hydraulic cylinder B. It also includes a tooth plate and a slide plate. The slide plate is located between the two slide frames and is fixed to the two slide frames. One end of the tooth plate is fixed to the slide plate, and the other end is tilted upward. The pinion gear is meshed with the slide plate.

[0009] Preferably, the chassis assembly includes a base plate and a one-way roller. There are four one-way rollers, which are respectively installed on the four corners of the bottom surface of the base plate. Two slideways are provided on the base plate. Two sliding frames are respectively installed on the two slideways and are slidably connected thereto. Stepping racks are provided on the sides of the two slideways. The stepping racks are fixed to the base plate, and the stepping gears are meshed with the stepping racks.

[0010] Preferably, the lifting assembly includes a reinforced vertical hanging rod, a reinforced horizontal hanging rod, a center rotating balancing group frame and an electric lifting winch. The reinforced vertical hanging rod is located in the middle position on one side of the base plate, and its bottom end is fixed to the base plate. The reinforced horizontal hanging rod is fixed to the upper end of the reinforced vertical hanging rod and extends to the middle position of the base plate. The center rotating balancing group frame is installed at the bottom of one end of the reinforced horizontal hanging rod away from the reinforced vertical hanging rod. The middle position of the center rotating balancing group frame is rotatably connected to the reinforced horizontal hanging rod. Two electric lifting winches are provided, and the two electric lifting winches are respectively fixedly installed at the two ends of the center rotating balancing group frame, and the output end of the electric lifting winch is installed with a cable tie.

[0011] Preferably, the power box includes a mechanical power protection shell and two middle gears, the two middle gears are meshed with each other, one output end of which is installed on the mechanical power protection shell, and the other output end passes through the mechanical power protection shell, the middle gear is rotationally connected to the mechanical power protection shell, and one end of the middle gear that passes through the mechanical power protection shell is fixed to the swing arm, a servo motor B is fixedly installed in the mechanical power protection shell, a worm is fixedly installed on its output shaft, the worm is rotationally connected to the mechanical power protection shell, a worm wheel is fixedly sleeved on the main shaft of one of the middle gears, and the worm wheel is meshed with the worm wheel.

[0012] Preferably, the driving wheel comprises a hub motor and a toothed rubber sleeve, the main shaft of the hub motor is fixed on the hollow tube, and the toothed rubber sleeve is fixed on the outer wall thereof.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The small hull hoisting and maintenance rack is provided with a sliding lifting component, a hull matching component and an angle adjustment component, two hollow tubes are inserted into both sides of the hull, and then the servo motor B is controlled to close the two hollow tubes upward until the driving wheel fits with the side of the hull, and the hydraulic cylinder A is controlled to move the hollow tube upward to lift the hull slightly, and then the two hydraulic rods B are controlled to extend. When the hydraulic cylinder B extends, the hollow tube moves upward obliquely as a whole. At the same time, the small gear meshes and rotates with the gear plate, causing the large gear to rotate at a low speed, so that the angle of the hollow tube gradually tilts downward when it moves obliquely upward, thereby cooperating with the lifting of one end of the hull. After lifting, the cable tie used for lifting can easily pass through the bottom of the hull, and then the hull is lowered and the other end of the hull is lifted. After multiple straps are passed through, the hull can be fixed, and stable lifting can be achieved without manual assistance in lifting the boat.

[0014] 2. The small hull lifting and maintenance frame is provided with a chassis assembly. When one end of the hull is lifted, the servo motor A drives the stepping gear to rotate. At this time, the bottom plate will move toward the bottom of the hull relative to the sliding lifting assembly under the reaction force until the bottom plate is inserted into the hull, which is convenient for connecting the hull with the electric lifting winch.

[0015] 3. The small hull hoisting and maintenance frame is equipped with a hoisting component. When one end of the hull is lifted, the bottom plate moves toward the hull, and then the straps can be pulled out to wrap around the hull to fix it. After the hull is lowered, it is moved to the other side and the hull is fixed in the same steps. The center rotary balance assembly frame can be driven to facilitate the steering of the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A magnified image of the area at A; Figure 3 It is a side view of the structure of the present invention; Figure 4 It is a front view of the structure of the present invention; Figure 5 It is a partial structural schematic diagram of the present invention; Figure 6 It is a structural diagram of the sliding lifting assembly of the present invention; Figure 7 For the present invention Figure 6 A magnified view of the area B in FIG. Figure 8 It is a structural diagram of the angle adjustment assembly of the present invention; Fig. 9 It is a structural diagram of the hull matching assembly of the present invention; Fig.10 It is a diagram of the internal structure of the hull matching components of the present invention.

[0017] In the figure: 1. chassis assembly; 101. bottom plate; 102. one-way roller; 103. slideway; 104. stepping rack; 2. lifting assembly; 201. reinforced vertical suspension rod; 202. reinforced horizontal suspension rod; 203. center rotary balance assembly frame; 204. electric lifting winch; 205. cable tie; 3. sliding lifting assembly; 301. sliding frame; 302. hydraulic cylinder B; 303. servo motor A; 304. stepping gear; 305. diagonal rod; 306. erection rod; 307. tooth plate; 308. slide plate; 4. angle adjustment assembly Parts; 401, large gear; 402, small gear; 403, slide rail; 404, hydraulic cylinder A; 405, bracket; 406, extension frame; 407, slider; 408, extension connecting frame; 5, hull matching components; 501, power box; 5011, mechanical power protection shell; 5012, middle gear; 5013, servo motor B; 5014, worm; 5015, worm wheel; 502, swing arm; 503, reinforcement plate; 504, hollow tube; 505, driving wheel; 5051, hub motor; 5052, toothed rubber sleeve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] like Figure 1-Figure 10 As shown, a small hull lifting and repair frame includes a chassis component 1, a lifting component 2, a sliding lifting component 3, an angle adjustment component 4 and a hull matching component 5. The lifting component 2 is installed on one side of the chassis component 1, the sliding lifting component 3 is arranged on the chassis component 1 and can slide laterally therefrom, the angle adjustment component 4 is installed on the output end of the sliding lifting component 3, and the hull matching component 5 is installed on the output end of the angle adjustment component 4.

[0023] The hull matching component 5 includes a power box 501, a swing arm 502, a reinforcement plate 503, a hollow tube 504 and a driving wheel 505. There are two swing arms 502, and the ends of the two swing arms 502 that are close to each other are installed on the output end of the power box 501. The power box 501 is used to make the two swing arms 502 close upward. There are two reinforcement plates 503, which are respectively fixed on the ends of the two swing arms 502 away from the power box 501. There are two hollow tubes 504, which are respectively fixed to the two reinforcement plates 503. The other end of the hollow tube 504 extends to a side away from the sliding lifting component 3. There are two groups of driving wheels 505, each group contains a number of driving wheels. The two groups of driving wheels 505 are respectively installed on the two hollow tubes 504, and the driving wheels 505 can actively rotate relative to the hollow tube 504.

[0024] The swing arm 502 and the power box 501 are both reinforced, and the internal hollow structure of the hollow tube 504 is used to transmit cables. The cable of the driving wheel 505 can extend into the power box 501 through the hollow tube 504. The length of the hollow tube 504 is not fixed and can be replaced with different lengths according to actual lifting requirements.

[0025] The angle adjustment assembly 4 includes a large gear 401, a small gear 402, a slide rail 403 and a hydraulic cylinder A404. There are two slide rails 403, one side of which is fixedly installed with a bracket 405. The large gear 401 is located between the two brackets 405, and its main shaft passes through the two brackets 405 and is rotatably connected to the brackets 405. One side of the principle slide rail 403 of the bracket 405 is fixedly installed with an extension frame 406. The small gear 402 is located between the two extension frames 406. The main shaft of the small gear 402 passes through the two extension frames 406 and is rotatably connected to the two extension frames 406 respectively. The small gear 402 is meshed with the large gear 401. There are two hydraulic cylinders A404, which are fixedly installed on the two slide rails 403 respectively. A slider 407 is slidably installed in the slide rail 403. The output end of the hydraulic cylinder A404 is fixedly connected to the slider 407, and the two sliders 407 are fixed to the power box 501 by an extended connecting frame 408.

[0026] The hydraulic cylinder A404 is powered by an external hydraulic component which can be mounted on the chassis component 1. The bracket 405, the extension frame 406 and the slide rail 403 are all reinforced to ensure that the structure will not be deformed when the vehicle is lifted.

[0027] The sliding lifting assembly 3 includes a sliding frame 301 and a hydraulic cylinder B302. There are two sliding frames 301, both of which are installed on the chassis assembly 1 and slidably connected thereto. A servo motor A303 is installed on each sliding frame 301. The output shaft of the servo motor A303 is fixedly installed with a stepping gear 304. The stepping gear 304 cooperates with the chassis assembly 1 to drive the sliding frame 301 to slide relative to the chassis assembly 1. There are two hydraulic cylinders B302, one end of which is fixed to the sliding frame 301 and the other end is tilted upward. An inclined rod 305 is also fixedly installed on the sliding frame 301. The other end of the inclined rod 305 is fixedly connected to the hydraulic cylinder B302. The output end of the hydraulic cylinder B302 is fixedly installed with a setting rod 306. The setting rod 306 is fixed to the corresponding extension frame 406 after being away from the output end of the hydraulic cylinder B302. It also includes a tooth plate 307 and a slide plate 308 . The slide plate 308 is located between the two sliding frames 301 and fixed to the two. One end of the tooth plate 307 is fixed to the slide plate 308 , and the other end is tilted upward. The pinion 402 is meshed with the slide plate 308 .

[0028] The hydraulic cylinder B302 is fixed to the sliding frame 301 by bolts, the inclined rod 305 plays the role of auxiliary support for the hydraulic cylinder B302, the erection rod 306 is reinforced, and the connection with the extension frame 406 needs to meet the requirements of lifting the hull. The angle of the hydraulic cylinder B302 relative to the sliding frame 301 is adjustable when the bolts are loosened, and the specifications of the inclined rod 305 only need to be changed. The servo motor A303 is controlled by the central processor. After the hull is lifted by the hydraulic cylinder B302, it can rotate the mobile chassis assembly 1 autonomously, or it can be manually controlled to move the chassis assembly 1.

[0029] The chassis assembly 1 includes a base plate 101 and a one-way roller 102. There are four one-way rollers 102, which are respectively installed on the four corners of the bottom surface of the base plate 101. Two slideways 103 are provided on the base plate 101. Two sliding frames 301 are respectively installed on the two slideways 103 and are slidably connected thereto. Stepping racks 104 are provided on the sides of the two slideways 103. The stepping racks 104 are fixed to the base plate 101, and the stepping gears 304 are meshed with the stepping racks 104.

[0030] The one-way roller 102 is composed of a universal wheel and a one-way brake. When the bottom plate 101 moves toward the bottom of the hull, the one-way brake needs to be manually opened to prevent the bottom plate 101 from being difficult to move toward the bottom of the hull due to the reaction force. In addition, the bottom plate 101 needs to be installed with a counterweight in actual application to prevent problems such as tilting.

[0031] The lifting assembly 2 includes a reinforced vertical suspension rod 201, a reinforced horizontal suspension rod 202, a center rotating balance assembly frame 203 and an electric lifting winch 204. The reinforced vertical suspension rod 201 is located in the middle position on one side of the base plate 101, and its bottom end is fixed to the base plate 101. The reinforced horizontal suspension rod 202 is fixed to the upper end of the reinforced vertical suspension rod 201 and extends to the middle position of the base plate 101. The center rotating balance assembly frame 203 is installed at the bottom of one end of the reinforced horizontal suspension rod 202 away from the reinforced vertical suspension rod 201. The middle position of the center rotating balance assembly frame 203 is rotatably connected to the reinforced horizontal suspension rod 202. Two electric lifting winches 204 are provided, and the two electric lifting winches 204 are respectively fixedly installed at the two ends of the center rotating balance assembly frame 203. The output end of the electric lifting winch 204 is installed with a cable tie 205.

[0032] The reinforced vertical suspension rod 201 and the reinforced transverse suspension rod 202 can adopt the reinforced support structure of the existing technology. The central rotating balance assembly frame 203 is connected to the reinforced transverse suspension rod 202 by a rotating shaft and a bearing. The rotating connection between the central rotating balance assembly frame 203 and the reinforced transverse suspension rod 202 meets the lifting load requirements. The electric lifting winch 204 is a low-speed and high-torque lifting equipment in the existing technology, and the cable tie 205 installed thereon can achieve surrounding fixation.

[0033] The power box 501 includes a mechanical power protection shell 5011 and two middle gears 5012. The two middle gears 5012 are meshed with each other. One output end is installed on the mechanical power protection shell 5011, and the other output end passes through the mechanical power protection shell 5011. The middle gear 5012 is rotationally connected to the mechanical power protection shell 5011, and one end of the middle gear 5012 that passes through the mechanical power protection shell 5011 is fixed to the swing arm 502. A servo motor B5013 is fixedly installed in the mechanical power protection shell 5011, and a worm 5014 is fixedly installed on its output shaft. The worm 5014 is rotationally connected to the mechanical power protection shell 5011. A worm wheel 5015 is fixedly sleeved on the main shaft of one of the middle gears 5012, and the worm 5014 is meshed with the worm wheel 5015.

[0034] When the servo motor B5013 drives the worm 5014 and the middle gear 5012 to rotate, a large closing force can be applied to the rocker arm to offset the hull or make the bottom plate 101 adapt to the hull and move a certain distance. Its main function is when coordinating with the hull in the early stage.

[0035] The driving wheel 505 comprises a hub motor 5051 and a toothed rubber sleeve 5052 . The main shaft of the hub motor 5051 is fixed on the hollow tube 504 , and the toothed rubber sleeve 5052 is fixedly sleeved on the outer wall thereof.

[0036] The toothed rubber sleeve 5052 is made of rubber material, and can enhance the contact force with the metal hull or the composite material hull. The hub motor 5051 can ensure that each driving wheel 505 can rotate by itself.

[0037] When in use, the bottom plate 101 is moved, and the two hollow tubes 504 are inserted on both sides of the hull, and then the servo motor B5013 is controlled, and the worm 5014 drives the worm wheel 5015 to rotate, and then the two middle gears 5012 are meshed with each other, and the two rocker arms are lifted up and close to each other under this action, so that the two hollow tubes 504 are closed upward until the driving wheel 505 is in contact with the side of the hull. If only one driving wheel 505 on the hollow tube 504 contacts the hull, the driving wheel 505 on the hollow tube 504 will rotate automatically to correct the bottom plate 101 or the hull until the driving wheels 505 on both hollow tubes 504 contact the side of the hull.

[0038] Control the hydraulic cylinder A404 to move the slider 407 upward, and then drive the power box 501 to move upward, and then the hollow tube 504 moves upward to lift the hull slightly, and then control the two hydraulic rods B to extend. When the hydraulic cylinder B302 extends, the hollow tube 504 and the angle adjustment assembly 4 move obliquely upward as a whole. At the same time, the small gear 402 meshes with the tooth plate 307 and rotates, and the small gear 402 meshes with the large gear 401, causing the large gear 401 to rotate at a low speed, thereby making the empty.

[0039] After lifting, the servo motor A303 drives the stepping gear 304 to rotate. At this time, the bottom plate 101 will move toward the bottom of the hull relative to the sliding lifting component 3 under the reaction force until the bottom plate 101 is inserted under the hull. The cable tie 205 used for lifting can easily pass through the bottom of the hull, and then the hull is lowered and the other end of the hull is lifted. The hull is fixed according to the same steps. During this process, the center rotary balance assembly frame 203 can be transmitted. When the two ends of the hull are balanced and bound, it can be lifted by the electric lifting winch 204.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small hull hoisting and repair rack, characterized in that: The invention comprises a chassis component (1), a lifting component (2), a sliding lifting component (3), an angle adjustment component (4) and a hull matching component (5), wherein the lifting component (2) is mounted on one side of the chassis component (1), the sliding lifting component (3) is arranged on the chassis component (1) and can slide laterally along the chassis component (1), the angle adjustment component (4) is mounted on the output end of the sliding lifting component (3), and the hull matching component (5) is mounted on the output end of the angle adjustment component (4); The hull matching component (5) comprises a power box (501), a swing arm (502), a reinforcement plate (503), a hollow tube (504) and a driving wheel (505). Two swing arms (502) are provided, and the ends of the two swing arms (502) close to each other are both installed on the output end of the power box (501). The power box (501) is used to make the two swing arms (502) close upward. Two reinforcement plates (503) are provided, which are respectively fixedly installed on the ends of the two swing arms (502) away from the power box (501). Two hollow tubes (504) are provided, which are respectively fixed to the two reinforcement plates (503). The other end of the hollow tube (504) extends to a side away from the sliding lifting component (3). Two groups of driving wheels (505) are provided, each group includes a plurality of driving wheels. The two groups of driving wheels (505) are respectively installed on the two hollow tubes (504). The driving wheels (505) can actively rotate relative to the hollow tubes (504).

2. A small hull hoisting and repairing frame according to claim 1, characterized in that: The angle adjustment assembly (4) comprises a large gear (401), a small gear (402), a slide rail (403) and a hydraulic cylinder A (404). Two slide rails (403) are provided, and a bracket (405) is fixedly installed on one side of each of the two slide rails. The large gear (401) is located between the two brackets (405). Its main shaft passes through the two brackets (405) and is rotatably connected to the brackets (405). An extension frame (406) is fixedly installed on one side of the principle slide rail (403) of the bracket (405). The small gear (402) is located between the two extension frames (406). 6), the main shaft of the pinion gear (402) passes through the two extension frames (406) and is rotatably connected to the two extension frames (406), the pinion gear (402) is meshed with the large gear (401), two hydraulic cylinders A (404) are provided, which are respectively fixedly mounted on two slide rails (403), and a slider (407) is slidably mounted in the slide rail (403), the output end of the hydraulic cylinder A (404) is fixedly connected to the slider (407), and the two sliders (407) are fixed to the power box (501) by using an extended connecting frame (408).

3. A small hull hoisting and repairing frame according to claim 2, characterized in that: The sliding lifting assembly (3) comprises a sliding frame (301) and a hydraulic cylinder B (302). Two sliding frames (301) are provided, both of which are mounted on the chassis assembly (1) and slidably connected thereto. A servo motor A (303) is mounted on each sliding frame (301). A stepping gear (304) is fixedly mounted on the output shaft of the servo motor A (303). The stepping gear (304) cooperates with the chassis assembly (1) to drive the sliding frame (301) relative to the chassis assembly (1). Sliding, two hydraulic cylinders B (302) are provided, one end of which is fixed to the sliding frame (301), and the other end is arranged to be inclined upward, and an inclined rod (305) is also fixedly installed on the sliding frame (301), and the other end of the inclined rod (305) is fixedly connected to the hydraulic cylinder B (302), and the output end of the hydraulic cylinder B (302) is fixedly installed with a mounting rod (306), and the mounting rod (306) is fixed to the corresponding extension frame (406) after being away from the output end of the hydraulic cylinder B (302); It also includes a tooth plate (307) and a slide plate (308). The slide plate (308) is located between the two sliding frames (301) and is fixed to the two sliding frames. One end of the tooth plate (307) is fixed to the slide plate (308) and the other end is tilted upward. The pinion (402) is meshed with the slide plate (308).

4. A small hull hoisting and repairing frame according to claim 3, characterized in that: The chassis assembly (1) comprises a bottom plate (101) and a one-way roller (102), wherein four one-way rollers (102) are provided and are respectively mounted on four corners of the bottom surface of the bottom plate (101), wherein two slideways (103) are provided on the bottom plate (101), wherein two sliding frames (301) are respectively mounted on the two slideways (103) and are slidably connected thereto, wherein stepping racks (104) are provided on the sides of the two slideways (103), wherein the stepping racks (104) are fixed to the bottom plate (101), and wherein the stepping gears (304) are meshed with the stepping racks (104).

5. A small ship hull hoisting and repairing frame according to claim 4, characterized in that: The hoisting assembly (2) comprises a reinforced vertical suspension rod (201), a reinforced horizontal suspension rod (202), a center slewing balance assembly frame (203) and an electric lifting winch (204); the reinforced vertical suspension rod (201) is located in the middle of one side of the base plate (101), and its bottom end is fixed to the base plate (101); the reinforced horizontal suspension rod (202) is fixed to the upper end of the reinforced vertical suspension rod (201) and extends toward the middle of the base plate (101); The frame (203) is installed at the bottom of one end of the reinforced horizontal suspension rod (202) away from the reinforced vertical suspension rod (201), and the middle position of the central rotating balance frame (203) is rotatably connected to the reinforced horizontal suspension rod (202). Two electric lifting winches (204) are provided, and the two electric lifting winches (204) are respectively fixedly installed at two ends of the central rotating balance frame (203), and the output end of the electric lifting winch (204) is installed with a cable tie (205).

6. A small ship hull hoisting and repairing frame according to claim 1, characterized in that: The power box (501) comprises a mechanical power protection shell (5011) and two middle gears (5012), the two middle gears (5012) meshing with each other, one output end of which is mounted on the mechanical power protection shell (5011), and the other output end passes through the mechanical power protection shell (5011), the middle gear (5012) is rotationally connected to the mechanical power protection shell (5011), one end of which passes through the mechanical power protection shell (5011) is fixed to the swing arm (502), a servo motor B (5013) is fixedly mounted in the mechanical power protection shell (5011), a worm (5014) is fixedly mounted on the output shaft of the servo motor B (5013), the worm (5014) is rotationally connected to the mechanical power protection shell (5011), a worm wheel (5015) is fixedly sleeved on the main shaft of one of the middle gears (5012), and the worm wheel (5014) meshes with the worm wheel (5015).

7. A small ship hull hoisting and repairing frame according to claim 1, characterized in that: The driving wheel (505) comprises a wheel hub motor (5051) and a toothed rubber sleeve (5052); the main shaft of the wheel hub motor (5051) is fixed on the hollow tube (504), and the toothed rubber sleeve (5052) is fixedly sleeved on the outer wall thereof.

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