A crane for propeller maintenance

Abstract

The utility model discloses a crane for propeller maintenance, which relates to the technical field of propeller maintenance, including a support frame, the bottom surface of the support frame is fixedly connected to two bottom plates, a lifting mechanism is arranged above the support frame, the lifting mechanism includes a servo motor and two connecting plates, the servo motor is fixedly connected to the support frame, the output shaft end of the servo motor is fixedly connected to a winding roller, the outer surface of the winding roller is fixedly connected to a winding rope, and the end of the winding rope away from the winding roller is fixedly connected to a support frame. The utility model can be arranged by the coordination between the support frame, the bottom plate and the lifting mechanism, so that when the propeller is lifted by adopting the winding device and the wire rope, the propeller is subject to certain constraints during the upward movement, thereby ensuring the stability of the propeller when it rises, avoiding the collision between the propeller and the surrounding objects, and further avoiding the deformation and damage of the propeller blades, thereby ensuring the normal use of the propeller.

Description

Technical Field

[0001] The utility model relates to the technical field of propeller maintenance, in particular to a crane used for propeller maintenance. Background Art

[0002] A propeller is a device that converts the engine's rotational power into propulsion or lift by rotating blades in the air. It consists of multiple blades and a central hub. The blades are installed on the hub like a twisted slender wing. The engine shaft is connected to the hub and drives it to rotate.

[0003] After the propeller has been working for a certain period of time, the staff needs to move it to the maintenance workbench for maintenance. However, the propeller is heavy and requires a lifting device to move it. At this time, a crane for propeller maintenance will be used.

[0004] The existing patent document with authorization announcement number CN213171222U can lift propellers of different sizes and can lift the propeller horizontally, preventing the blades from colliding with the maintenance table when the propeller is placed on the maintenance table. However, when the above-mentioned crane for propeller maintenance is actually used, a winding device and a wire rope are used to lift the propeller. During the upward movement of the propeller, the propeller is less constrained. Under the influence of factors such as wind, the propeller is prone to shaking, causing the propeller to collide with surrounding objects, which will cause the blades to deform and damage the propeller, affecting the use of the propeller. To this end, we provide a crane for propeller maintenance to solve the above problems. Utility Model Content

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a crane for propeller maintenance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crane for propeller maintenance, comprising a support frame, the bottom surface of the support frame is fixedly connected to two bottom plates, a lifting mechanism is arranged above the support frame, the lifting mechanism comprises a servo motor and two connecting plates, the servo motor is fixedly connected to the support frame, the output shaft end of the servo motor is fixedly connected to a winding roller, the outer surface of the winding roller is fixedly connected to a winding rope, the end of the winding rope away from the winding roller is fixedly connected to a support frame, one side surface and the other side surface of the support frame are fixedly connected to a limit rod slidably connected to the support frame, the inner wall of the support frame is slidably connected to two L-shaped blocks and four sliding rods, the L-shaped blocks and the connecting plates are fixedly connected to the sliding rods, the outer surface of each sliding rod is sleeved with a reset spring, the support frame and the L-shaped block are fixedly connected to the reset spring, and the inner walls of the two L-shaped blocks are fixedly connected to the limiting assembly.

[0007] Furthermore, a support block is fixedly connected to the upper surface of the support frame, and the support block is rotatably connected to the output shaft of the servo motor. The support block can provide auxiliary support for the output shaft of the servo motor by being connected to the support frame and the output shaft of the servo motor, thereby improving the stability of the output shaft of the servo motor during rotation.

[0008] Furthermore, two symmetrical guide rods are fixedly connected to the upper surface of the support frame, and the two guide rods are slidably connected to the support frame. The top ends of the two guide rods are fixedly connected to limit blocks. The guide rods can guide the movement of the support frame by being connected to the support frame and the support frame, so that the support frame is more stable during the up and down movement, and the limit blocks can limit the lowest descending position of the guide rods.

[0009] Furthermore, two reinforcing blocks are fixedly connected to the upper surfaces of the two base plates, and each of the reinforcing blocks is fixedly connected to the support frame. By connecting the reinforcing blocks to the support frame and the base plates respectively, auxiliary support for the support frame can be achieved, thereby enhancing the structural strength of the support frame.

[0010] Furthermore, two universal wheels are installed on the bottom surfaces of the two base plates, and the two universal wheels on the same side are symmetrically arranged with the mid-vertical line of the base plate as the symmetry axis. The universal wheels can be used to facilitate the overall movement of the crane used for propeller maintenance, and the universal wheels have a self-locking function, which can fix the position of the crane used for propeller maintenance after movement.

[0011] Furthermore, the two base plates are fixedly connected to a fixing block on one side facing away from each other, the inner walls of the two fixing blocks are threadedly connected to bolts, the bottom ends of the two bolts are fixedly connected to a limiting plate, the base plate provides fixed support for the fixing block, and by rotating the bolt, the bolt can move up and down in the inner wall of the fixing block, thereby driving the limiting plate to move up and down, and when the limiting plate moves to fit tightly with the ground, the crane used for propeller maintenance can be limited and fixed after moving, thereby improving stability during use.

[0012] Furthermore, a controller is fixedly connected to one side of the support frame, and the controller is electrically connected to the servo motor. The forward and reverse rotation of the servo motor can be conveniently controlled through the controller, thereby improving the convenience of using the crane for propeller maintenance.

[0013] Furthermore, the inner walls of the two limit assemblies are provided with anti-skid pads, which can enhance the stability of the limit assemblies when clamping the propellers, thereby preventing the propellers from slipping when being hoisted.

[0014] Compared with the prior art, the crane for propeller maintenance has the following beneficial effects:

[0015] 1. The utility model, through the coordinated arrangement among the support frame, the bottom plate and the lifting mechanism, can make the propeller subject to certain constraints during the upward movement when the propeller is lifted by adopting the winding device and the wire rope, thereby ensuring the stability of the propeller when it rises, avoiding the collision between the propeller and the surrounding objects, and further avoiding the deformation and damage of the propeller blades, thereby ensuring the normal use of the propeller.

[0016] 2. The utility model can guide the movement of the support frame by providing a guide rod and a limit block, so that the support frame is more stable during the up and down movement; by providing a reinforcement block, the support frame can be auxiliary supported, thereby enhancing the structural strength of the support frame; by providing a universal wheel, the crane for propeller maintenance can be conveniently moved as a whole; by providing a fixing block, a bolt and a limit plate, the crane for propeller maintenance can be limited and fixed after movement, thereby improving stability during use; by providing a controller, the forward and reverse rotation of the servo motor can be conveniently controlled; by providing an anti-slip pad, the stability of the limit assembly when clamping the propeller can be enhanced, thereby avoiding slippage when hoisting the propeller; by providing a support block, the output shaft of the servo motor can be auxiliary supported, thereby improving the stability of the output shaft of the servo motor when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic front view of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the support frame structure of the utility model;

[0019] Figure 3 The local structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 4 The local structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 5 The local structure of the utility model is shown in FIG. Figure 3 .

[0022] In the figure: 1. support frame; 2. bottom plate; 3. lifting mechanism; 301. servo motor; 302. winding roller; 303. winding rope; 304. support frame; 305. limit rod; 306. L-shaped block; 307. slide bar; 308. connecting plate; 309. reset spring; 3010. limit assembly; 4. guide rod; 5. limit block; 6. reinforcement block; 7. universal wheel; 8. fixing block; 9. bolt; 10. limit plate; 11. controller; 12. anti-slip pad; 13. support block. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] As described in the background technology, when a crane used for propeller maintenance is actually used, a winding device and a wire rope are used to lift the propeller. During the upward movement of the propeller, the propeller is subject to less constraint. Under the influence of factors such as wind, the propeller is prone to shaking, causing the propeller to collide with surrounding objects, resulting in deformation of the blades and damage to the propeller, affecting the use of the propeller. For this reason, this embodiment provides a crane for propeller maintenance.

[0025] See also Figures 1 to 5 This embodiment proposes a crane for propeller maintenance, including a support frame 1, the bottom surface of the support frame 1 is fixedly connected to two bottom plates 2, the upper surfaces of the two bottom plates 2 are fixedly connected to two reinforcing blocks 6, each reinforcing block 6 is fixedly connected to the support frame 1, and auxiliary support for the support frame 1 can be achieved by connecting the reinforcing blocks 6 to the support frame 1 and the bottom plates 2 respectively, thereby enhancing the structural strength of the support frame 1.

[0026] Two universal wheels 7 are installed on the bottom surfaces of the two base plates 2, and the two universal wheels 7 on the same side are symmetrically arranged with the mid-vertical line of the base plate 2 as the symmetry axis. Through the universal wheels 7, the crane used for propeller maintenance can be conveniently moved as a whole, and the universal wheels 7 have a self-locking function, which can fix the position of the crane used for propeller maintenance after moving.

[0027] A fixing block 8 is fixedly connected to the side surfaces of the two bottom plates 2 that are away from each other. Bolts 9 are threadedly connected to the inner walls of the two fixing blocks 8 . The bottom ends of the two bolts 9 are fixedly connected to a limiting plate 10 .

[0028] The base plate 2 supports the fixed block 8. By rotating the bolt 9, the bolt 9 can move up and down in the inner wall of the fixed block 8, thereby driving the limit plate 10 to move up and down. When the limit plate 10 moves to fit closely with the ground, the crane used for propeller maintenance can be limited and fixed after moving, thereby improving stability during use.

[0029] A lifting mechanism 3 is arranged above the support frame 1, and the lifting mechanism 3 includes a servo motor 301 and two connecting plates 308. The servo motor 301 is fixedly connected to the support frame 1, and the output shaft end of the servo motor 301 is fixedly connected to a winding roller 302, and the outer surface of the winding roller 302 is fixedly connected to a winding rope 303, and the end of the winding rope 303 away from the winding roller 302 is fixedly connected to a support frame 304.

[0030] The support frame 1 fixedly supports the servo motor 301. After the servo motor 301 is started, it can drive the winding roller 302 to rotate forward and reverse, thereby winding and stretching the winding rope 303, and driving the support frame 304 to move up and down through the winding and stretching of the winding rope 303.

[0031] A controller 11 is fixedly connected to one side of the support frame 1, and the controller 11 is electrically connected to the servo motor 301. The forward and reverse rotation of the servo motor 301 can be controlled by the controller 11. The control circuit of the controller 11 can be implemented by programming by technicians in this field, which is common knowledge in this field. It is only used without modification, so the control method and circuit connection will not be described in detail.

[0032] A support block 13 is fixedly connected to the upper surface of the support frame 1, and the support block 13 is rotatably connected to the output shaft of the servo motor 301. The support block 13 can provide auxiliary support for the output shaft of the servo motor 301 by connecting with the support frame 1 and the output shaft of the servo motor 301, thereby improving the stability of the output shaft of the servo motor 301 during rotation.

[0033] Two symmetrical guide rods 4 are fixedly connected to the upper surface of the support frame 304, and the two guide rods 4 are slidably connected to the support frame 1. The top ends of the two guide rods 4 are fixedly connected to the limit blocks 5. The guide rods 4 can guide the movement of the support frame 304 by being connected to the support frame 304 and the support frame 1, so that the support frame 304 is more stable during the up and down movement, and the limit blocks 5 can limit the lowest descending position of the guide rods 4.

[0034] One side surface and the other side surface of the support frame 304 are fixedly connected with a limit rod 305 which is slidably connected to the support frame 1. After the support frame 304 moves, it can drive the limit rod 305 to move up and down. A sliding groove compatible with the limit rod 305 is opened in the inner wall of the support frame 1, which can realize the limit support of the support frame 304 when it moves, thereby ensuring the stability of the support frame 304 when it moves up and down.

[0035] The inner wall of the support frame 304 is slidably connected to two L-shaped blocks 306 and four sliding rods 307. The L-shaped blocks 306 and the connecting plates 308 are fixedly connected to the sliding rods 307. The outer surface of each sliding rod 307 is sleeved with a return spring 309. The support frame 304 and the L-shaped blocks 306 are fixedly connected to the return springs 309. The inner walls of the two L-shaped blocks 306 are fixedly connected to the limiting assembly 3010.

[0036] The limiting assembly 3010 is composed of a fixed rod and an arc-shaped plate. Pulling the connecting plate 308 can drive the L-shaped block 306 to move through the sliding rod 307. After the L-shaped block 306 moves, it will compress the return spring 309 to cause it to produce elastic deformation, thereby adjusting the distance between the two limiting assemblies 3010 and leaving a hub distance greater than the center of the propeller.

[0037] Then, the connecting plate 308 is loosened, and under the reset action of the reset spring 309, the two L-shaped blocks 306 and the two limit assemblies 3010 are driven to approach each other and fit with the outer surface of the hub in the center of the propeller, and the bottom surface of the hub in the center of the propeller is lifted by the two L-shaped blocks 306, thereby achieving the limit fixation of the propeller.

[0038] The inner walls of the two limiting components 3010 are both provided with anti-skid pads 12, which can enhance the stability of the limiting components 3010 when clamping the propeller, thereby preventing the propeller from slipping when being hoisted.

[0039] The components in the drawings of the present invention are only for style reference and are not used as specific size standards. The specific sizes are determined according to the actual requirements of production.

[0040] Working principle: When using the crane for propeller maintenance, the servo motor 301 is controlled to start. After the servo motor 301 is started, it can drive the winding roller 302 to rotate, so as to stretch the winding rope 303. Under the gravity of the support frame 304 and the components connected thereto, the support frame 304 and the components connected thereto gradually descend to the propeller that needs to be hoisted, and then the two connecting plates 308 are pulled away from each other, and the two L-shaped blocks 306 can be driven away from each other through the sliding rods 307 respectively connected thereto, thereby driving the two limiting components 3010 away from each other, and compressing the return spring 309 to cause it to produce elastic deformation until a distance greater than the hub distance in the center of the propeller is left between the two limiting components 3010, and then the connecting plate 308 is released, and under the reset action of the return spring 309, the two L-shaped blocks 306 and the two limiting components 3010 are driven close to each other. The inner walls of the two limit assemblies 3010 are both in contact with the outer surface of the hub in the center of the propeller, and the bottom surface of the hub in the center of the propeller is lifted by two L-shaped blocks 306, so as to achieve the limit fixation of the propeller, and then the servo motor 301 is controlled to reverse, so that the rewinding rope 303 is gradually reeled up by the reversed reeling roller 302, so as to drive the propeller to gradually rise and complete the lifting, and the limit rods 305 connected to the two sides of the support frame 304 are used to achieve the limit support of the support frame 304 when it moves, so as to ensure the stability of the support frame 304 when it moves up and down. When the utility model adopts the rewinding device and the wire rope to realize the propeller lifting, the propeller is subject to certain constraints during the upward movement, so as to ensure the stability of the propeller when it rises, avoid the collision between the propeller and the surrounding objects, and then avoid the deformation and damage of the propeller blades, so as to ensure the normal use of the propeller.

Claims

1. A crane for propeller maintenance, comprising a support frame (1), characterized in that: The bottom surface of the support frame (1) is fixedly connected to two bottom plates (2); a hoisting mechanism (3) is arranged above the support frame (1); the hoisting mechanism (3) comprises a servo motor (301) and two connecting plates (308); the servo motor (301) is fixedly connected to the support frame (1); the output shaft end of the servo motor (301) is fixedly connected to a winding roller (302); the outer surface of the winding roller (302) is fixedly connected to a winding rope (303); and the end of the winding rope (303) away from the winding roller (302) is fixedly connected to a support frame (304); One side surface and the other side surface of the support frame (304) are fixedly connected with a limit rod (305) slidably connected to the support frame (1); the inner wall of the support frame (304) is slidably connected with two L-shaped blocks (306) and four sliding rods (307); the L-shaped blocks (306) and the connecting plates (308) are fixedly connected with the sliding rods (307); the outer surface of each sliding rod (307) is sleeved with a reset spring (309); the support frame (304) and the L-shaped blocks (306) are fixedly connected with the reset spring (309); and the inner walls of the two L-shaped blocks (306) are fixedly connected with the limit assembly (3010).

2. A crane for propeller maintenance according to claim 1, characterized in that: A support block (13) is fixedly connected to the upper surface of the support frame (1), and the support block (13) is rotatably connected to the output shaft of the servo motor (301).

3. A crane for propeller maintenance according to claim 1, characterized in that: Two symmetrical guide rods (4) are fixedly connected to the upper surface of the support frame (304); the two guide rods (4) are slidably connected to the support frame (1); and the top ends of the two guide rods (4) are fixedly connected to limit blocks (5).

4. A crane for propeller maintenance according to claim 1, characterized in that: Two reinforcing blocks (6) are fixedly connected to the upper surfaces of the two bottom plates (2), and each of the reinforcing blocks (6) is fixedly connected to the support frame (1).

5. A crane for propeller maintenance according to claim 1, characterized in that: Two universal wheels (7) are installed on the bottom surfaces of the two bottom plates (2), and the two universal wheels (7) located on the same side are symmetrically arranged with the mid-vertical line of the bottom plate (2) as the symmetry axis.

6. A crane for propeller maintenance according to claim 1, characterized in that: A fixing block (8) is fixedly connected to the side surfaces of the two bottom plates (2) that are away from each other, the inner walls of the two fixing blocks (8) are threadedly connected to bolts (9), and the bottom ends of the two bolts (9) are fixedly connected to a limiting plate (10).

7. A crane for propeller maintenance according to claim 1, characterized in that: A controller (11) is fixedly connected to one side of the support frame (1), and the controller (11) is electrically connected to the servo motor (301).

8. A crane for propeller maintenance according to claim 1, characterized in that: The inner walls of the two limiting components (3010) are both provided with anti-slip pads (12).

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