A mobile lifting platform for installing ship rudder propeller

Abstract

The present invention discloses a mobile lifting platform for installing a ship's rudder and propeller, comprising a mobile platform, wherein a horizontal lifting platform is arranged on the mobile platform through a lifting mechanism; walking wheel mechanisms are arranged at four corners of the bottom of the mobile platform, and a supporting mechanism is arranged next to each walking wheel mechanism; the walking wheel mechanisms are erected on an assembled track; a mobile platform lifting lug is arranged on the side of the mobile platform; a hydraulic pump station is fixed at the bottom of the mobile platform; a power distribution cabinet and an electrical control cabinet are also arranged on the upper surface of the mobile platform; the platform of the present invention can be used to stably, smoothly, accurately and conveniently install the rudder or propeller of the ship.

Description

Technical Field

[0001] The invention relates to the field of shipbuilding, and more particularly to a mobile lifting platform for installing a ship rudder propeller. Background Art

[0002] The rudder and propeller of a ship are the steering and power devices of the ship. The rudder is usually made of steel, with large size, high center of gravity, heavy weight and small cross-sectional width; the propeller is usually made of brass, with complex blade shape, cylindrical structure in the middle, heavy weight and small support point; when installing the rudder and propeller of a ship, the weight of the rudder and propeller is very large, often reaching more than 100 tons, and the positioning accuracy is high. The installation space is limited and it is impossible to use a large crane to assist the installation. The traditional installation method can only use the installation of the lifting lug above the stern of the hull and the method of hanging a large-tonnage hoist to pull. The installation labor intensity is high and the positioning accuracy is poor. The construction workers pull around the rudder and propeller, which poses a safety hazard.

[0003] In addition, when installing the rudder and propeller of a ship, since the rudder and propeller are very heavy, a large platform is often required for transportation when moving the rudder and propeller to the specified position. During the transportation of the large platform, the steering process is inevitable. During the steering process, the track design and walking wheel design in traditional technology are often very inconvenient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mobile lifting platform for installing a ship's rudder or propeller, so that the rudder or propeller of the ship can be installed stably, smoothly, accurately and conveniently using the platform of the present invention.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A mobile lifting platform for installing a ship's rudder propeller comprises a mobile platform, on which a horizontal lifting platform is arranged via a lifting mechanism;

[0007] The four corners of the bottom of the mobile platform are all provided with walking wheel mechanisms, and a supporting mechanism is also provided next to each walking wheel mechanism; the walking wheel mechanism is mounted on an assembled track;

[0008] The side of the mobile platform is provided with a mobile platform lifting lug; the bottom of the mobile platform is fixed with a hydraulic pump station; the upper surface of the mobile platform is also provided with a power distribution cabinet and an electrical control cabinet;

[0009] The walking wheel mechanism comprises a support frame with upper and lower openings, in which at least two walking wheels are fixed respectively through wheel axles, and the wheel axles are rollingly arranged on the support frame through bearings; the center of the tread of the walking wheel is concave inward; the bottom end of the wheel axle is lower than the bottom ends of the two side surfaces of the support frame parallel to the wheel axle;

[0010] A support plate is provided on the upper surface of the support frame, and both sides of the bottom of the support plate are connected to vertical connecting plates; the connecting plate is attached to the outer side of the support frame and fixed to the support frame through a first pin shaft; the top end of the wheel axle is lower than the lower surface of the support plate;

[0011] A vertical connecting column is fixed on the upper surface of the support plate, the top of the connecting column is connected to the steering end of the bottom end of a vertical steering hydraulic cylinder, and the top of the steering hydraulic cylinder is connected to the bottom of the mobile platform through a horizontally arranged connecting flange;

[0012] At least one wheel axle is connected to the hydraulic motor reduction integrated machine, and the hydraulic motor reduction integrated machine is fixed to the outside of the support frame;

[0013] The support mechanism includes a fixed hydraulic cylinder fixed to the bottom of the mobile platform, and the telescopic end of the fixed hydraulic cylinder is vertically connected to the horizontal support disc downward; when the telescopic end of the fixed hydraulic cylinder moves to the bottom, the support disc is lower than the bottom end of the walking wheel mechanism;

[0014] The assembled track is formed by splicing multiple groups of track components, each track component includes a horizontal long strip base, and a protruding guide rail is fixed on the upper surface of the base through a pressing plate, and the central axis of the protruding guide rail and the central axis of the base are located on the same vertical plane;

[0015] The protruding guide rail has the same length as the base; the protruding guide rail protrudes horizontally from the base at the head end, thereby leaving a blank area at the tail end of the base; an embedding opening is opened in the blank area, and the embedding opening includes a truncated cone-shaped embedding hole with a smaller end facing downward, and an embedding strip connected to the embedding hole; the center of the embedding hole is located on the central axis of the base, and the embedding strip is located on the central axis of the base; an embedding body corresponding to the embedding opening is fixed at the bottom of the head end of the protruding guide rail protruding horizontally from the base;

[0016] Two adjacent track components are detachably connected by embedding the embedding body into the embedding opening;

[0017] The lifting platform includes a lifting base and four lifting installation bodies respectively installed at the four corners of the lifting base; the four lifting installation bodies are respectively fixed to four lifting mechanisms;

[0018] A plurality of ball bearing devices are arranged vertically and horizontally on the upper surface of the lifting base, and the ball bearing device includes a cylindrical ball bearing base vertically fixed on the upper surface of the lifting base, and a ball bearing is arranged in the ball bearing base; a ball bearing cover plate is provided on the upper cover of the ball bearing base, and a cover plate opening is provided in the center of the ball bearing cover plate, and the top of the ball bearing protrudes from the cover plate opening;

[0019] The lifting installation body comprises a support column whose bottom end is fixed to the lifting base, a lifting connection plate is horizontally extended from the top of the support column in a direction away from the lifting base, and a vertically transparent bolt hole is opened at one end of the lifting connection plate away from the support column;

[0020] A plurality of adjustment hydraulic cylinders are installed at the edge of the upper surface of the lifting base, and the telescopic ends of the adjustment hydraulic cylinders are perpendicular to the edge of the lifting platform and face inwards;

[0021] The lifting mechanism includes a lifting base, a vertical lifting guide column is fixed on the lifting base, a guide column sleeve is provided on the sliding sleeve of the lifting guide column, the guide column sleeve is connected to a horizontal lifting support plate, a lifting ear plate is fixed at the bottom of the lifting support plate, the lifting ear plate is hinged to a connecting block through a second pin shaft, and the connecting block is fixed to the top end of a telescopic end of a lifting hydraulic cylinder;

[0022] The lifting support plate is supported under the lifting connection plate and fixed to the lifting connection plate by bolts;

[0023] The four lifting bases are respectively fixed at the four corners of the upper surface of the moving platform.

[0024] The guide column sleeve comprises: a bottom circular cylinder and an upper circular cylinder connected to the bottom circular cylinder;

[0025] The bottom circular cylinder includes a self-lubricating graphite copper sleeve sleeved on the outer wall of the lifting guide column and a sleeve body sleeved on the outer wall of the self-lubricating graphite copper sleeve; the bottom of the self-lubricating graphite copper sleeve is connected to a horizontal circular bottom plate, the circular bottom plate extends to the bottom of the sleeve body and is connected to the sleeve body by bolts; a circular top plate extends from the top of the sleeve body toward the lifting guide column, and the circular top plate is closely attached to the top of the self-lubricating graphite copper sleeve; a gap is left between the circular top plate and the circular bottom plate and the outer wall of the lifting guide column;

[0026] The upper circular ring cylinder is sleeved on the lifting guide column and the bottom end is connected to the upper surface of the circular ring top plate; a gap is left between the upper circular ring cylinder and the lifting guide column.

[0027] The lifting base is a rectangular structure, and the adjusting hydraulic cylinder is only arranged at the position adjacent to the two long edges of the lifting base; there are four adjusting hydraulic cylinders, which are respectively arranged at the positions adjacent to the four lifting installation bodies.

[0028] The support frame is a rectangular frame; the bottom ends of the two side surfaces of the support frame perpendicular to the wheel axle are lower than the bottom ends of the two side surfaces of the support frame parallel to the wheel axle; the bottom ends of the two side surfaces of the support frame perpendicular to the wheel axle are lower than the bottom end of the wheel axle.

[0029] The first pin shaft and the wheel shaft are parallel to each other.

[0030] Each running wheel mechanism comprises two running wheels, and two wheel axles respectively connected to the two running wheels are connected through a transmission system.

[0031] The bottom of the protruding guide rail extends protruding structures toward both sides, and the outer side of the protruding structure is provided with a limiting block welded on the base.

[0032] A pressing plate is pressed on the limit block and the protruding structure, and the pressing plate is fixedly connected with the limit block by bolts.

[0033] Concave strips are arranged on both sides of the base; and track hanging ears are arranged on the concave strips.

[0034] The advantages of the present invention over the prior art are:

[0035] 1. For assembled tracks, a specified number of track components can be hoisted by the cooperation of a crane and lifting ears and then spliced ​​for use. Since the positions of the embedded body and the embedded opening are set correspondingly, it can be ensured that the protruding guide rails on the two adjacent track components are located on the same straight line, and the assembly process does not require fasteners, which is very efficient. The setting of the limit block and the pressure plate can also ensure that the protruding guide rail is located on the central axis. When disassembling and assembling, you only need to disassemble the adjacent track components, which is very convenient and efficient. Therefore, when you need to change the direction of the track, you only need to disassemble and reassemble it, which is very convenient.

[0036] 2. The mobile platform of the present invention utilizes a walking wheel mechanism. When turning is required, it is only necessary to lift the walking wheel mechanism off the track through the supporting mechanism, change the direction of the track, and control the walking wheel to rotate as a whole to the direction of the track through the steering hydraulic cylinder. Then, the mobile platform can be lowered again through the supporting mechanism to change the direction of travel. In the above process, there is no need to turn the entire mobile platform, which is very convenient.

[0037] 3. The lifting mechanism can ensure that the lifting base is highly horizontal and the lifting is smooth during the lifting process. This is because the lifting ear plate can adjust its forward direction by rotating during the lifting process, so that the lifting support plate can always move along the lifting guide column, and the lifting support plate will ensure that the lifting base always remains in a horizontal state.

[0038] 4. By adopting the ball bearing support on the lifting base, the large rudder or paddle can be pushed to move on the lifting base by adjusting the small force of the hydraulic cylinder, so as to adjust its position to achieve the precise installation position. It can be seen that the platform of the present invention has the advantages of labor saving, stability and high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the mobile lifting platform of the present invention;

[0040] Figure 2 is a schematic diagram of a lifting platform of the present invention;

[0041] Figure 3 is a schematic diagram of a ball bearing device of the present invention;

[0042] Figure 4 is an exploded view of the ball bearing device of the present invention;

[0043] Figure 5 It is a top three-dimensional schematic diagram of the lifting mechanism of the present invention;

[0044] Figure 6 It is a lateral stereoscopic schematic diagram of the lifting mechanism of the present invention;

[0045] Figure 7 It is an axial cross-sectional view of the guide post sleeve and the guide post sleeve of the lifting mechanism of the present invention;

[0046] Figure 8 is a schematic diagram of a mobile platform of the present invention;

[0047] Fig. 9 It is a top perspective view of the travel wheel mechanism of the present invention;

[0048] Fig.10 This is a bottom-up stereoscopic view of the travel wheel mechanism of the present invention;

[0049] Fig.11 It is a schematic diagram of the track assembly of the assembled track of the present invention;

[0050] Fig.12 The present invention Fig.11 Enlarged view of box A;

[0051] Fig.13 is a side view of a track assembly of the assembled track of the present invention;

[0052] Fig.14 It is a side view of two adjacent track components of the assembled track of the present invention before being assembled;

[0053] Fig.15 It is a bottom view of two adjacent track components of the assembled track of the present invention before being assembled.

[0054] In the figure, 1, mobile platform, 10, supporting mechanism, 11, walking wheel mechanism, 13, lifting mechanism, 15, power distribution cabinet, 16, electrical control cabinet, 17, hydraulic pump station, 19, mobile platform lifting lug;

[0055] 111. Steering hydraulic cylinder, 112. Support plate, 113. Support frame, 114. Connecting plate, 115. First pin shaft, 116. Wheel axle, 117. Traveling wheel, 118. Hydraulic motor reduction integrated machine, 119. Connecting flange;

[0056] 131. lifting guide column, 132. lifting base, 133. guide column sleeve, 134. lifting support plate, 135. lifting ear plate, 136. second pin shaft, 137. self-lubricating graphite copper sleeve, 138. annular bottom plate, 139. upper annular cylinder;

[0057] 2. Lifting platform, 21. Lifting installation body, 22. Lifting base, 23. Ball bearing device, 231. Ball bearing base, 232. Ball bearing, 233. Ball bearing cover plate, 24. Adjustment hydraulic cylinder;

[0058] 51. Base, 52. Protruding guide rail, 53. Embedding opening, 54. Limiting block, 55. Protruding structure, 56. Embedding body, 57. Track lifting ear, 58. Pressing plate. DETAILED DESCRIPTION

[0059] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0060] like Figures 1 to 15 As shown, the present invention is a mobile lifting platform for installing a ship rudder propeller, comprising a mobile platform 1, on which a horizontal lifting platform 2 is arranged through a lifting mechanism 13;

[0061] The four corners of the bottom of the mobile platform 1 are all provided with a walking wheel mechanism 11, and a supporting mechanism 10 is also provided next to each walking wheel mechanism 11; the walking wheel mechanism 11 is mounted on an assembled track;

[0062] A mobile platform lifting lug 19 is provided on the side of the mobile platform 1; a hydraulic pump station 17 is fixed at the bottom of the mobile platform 1; a power distribution cabinet 15 and an electrical control cabinet 16 are also provided on the upper surface of the mobile platform 1;

[0063] The travel wheel mechanism 11 comprises a support frame 113 with upper and lower openings, in which at least two travel wheels 117 are fixed respectively through axles 116, and the axles 116 are rollingly arranged on the support frame 113 through bearings; the tread center of the travel wheel 117 is concave inward; the bottom end of the axle 116 is lower than the bottom ends of the two side surfaces of the support frame 113 parallel to the axle 116;

[0064] A support plate 112 is disposed on the upper surface of the support frame 113, and both sides of the bottom of the support plate 112 are connected to vertical connecting plates 114; the connecting plate 114 is attached to the outer side of the support frame 113 and fixed to the support frame 113 through a first pin 115; the top end of the wheel axle 116 is lower than the lower surface of the support plate 112;

[0065] A vertical connecting column is fixed on the upper surface of the support plate 112, and the top of the connecting column is connected to the steering end of the bottom end of a vertical steering hydraulic cylinder 111. The top of the steering hydraulic cylinder 111 is connected to the bottom of the mobile platform 1 through a horizontally arranged connecting flange 119;

[0066] At least one axle 116 is connected to a hydraulic motor reduction integrated machine 118, and the hydraulic motor reduction integrated machine 118 is fixed to the outside of the support frame 113;

[0067] The support mechanism 10 includes a fixed hydraulic cylinder fixed to the bottom of the mobile platform 1, and the telescopic end of the fixed hydraulic cylinder is vertically connected to a horizontal support disc downward; when the telescopic end of the fixed hydraulic cylinder moves to the bottom, the support disc is lower than the bottom end of the walking wheel mechanism 11;

[0068] The assembled track is formed by splicing multiple track components, each track component includes a horizontal long strip base 51, and a protruding guide rail 52 is pressed and fixed on the upper surface of the base 51 through a pressing plate 58, and the central axis of the protruding guide rail 52 and the central axis of the base 51 are located on the same vertical plane;

[0069] The protruding guide rail 52 has the same length as the base 51; the protruding guide rail 52 protrudes horizontally from the base 51 at the head end, thereby leaving a blank area at the tail end of the base 51; an embedding opening 53 is opened in the blank area, and the embedding opening 53 includes a truncated cone-shaped embedding hole with a smaller end facing downward, and an embedding strip connected to the embedding hole; the center of the embedding hole is located at the central axis of the base 51, and the embedding strip is located at the central axis of the base 51; an embedding body 56 corresponding to the embedding opening 53 is fixed at the bottom of the head end of the protruding guide rail 52 protruding horizontally from the base 51;

[0070] Two adjacent track assemblies are detachably connected by embedding the embedding body 56 into the embedding opening 53;

[0071] The lifting platform 2 includes a lifting base 22 and four lifting installation bodies 21 respectively installed at four corners of the lifting base 22; the four lifting installation bodies 21 are respectively fixed to four lifting mechanisms 13;

[0072] A plurality of ball devices 23 are arranged vertically and horizontally on the upper surface of the lifting base 22, and the ball device 23 includes a cylindrical ball base 231 vertically fixed on the upper surface of the lifting base 22, and a ball 232 is arranged in the ball base 231; a ball cover plate 233 is provided on the ball base 231, and a cover plate opening is opened in the center of the ball cover plate 233, and the top of the ball 232 protrudes from the cover plate opening;

[0073] The lifting installation body 21 includes a support column whose bottom end is fixed to the lifting base 22, and a lifting connection plate is horizontally extended from the top of the support column in a direction away from the lifting base 22, and a vertically transparent bolt hole is opened at one end of the lifting connection plate away from the support column;

[0074] A plurality of adjustment hydraulic cylinders 24 are installed at the edge of the upper surface of the lifting base 22, and the telescopic ends of the adjustment hydraulic cylinders 24 are perpendicular to the edge of the lifting platform 2 and face inward;

[0075] The lifting mechanism 13 includes a lifting base 132, a vertical lifting guide column 131 is fixed on the lifting base 132, a guide column sleeve 133 is provided on the sliding sleeve of the lifting guide column 131, the guide column sleeve 133 is connected to a horizontal lifting support plate 134, a lifting ear plate 135 is fixed at the bottom of the lifting support plate 134, the lifting ear plate 135 is hinged to a connecting block through a second pin shaft 136, and the connecting block is fixed to the top of the telescopic end of a lifting hydraulic cylinder;

[0076] The lifting support plate 134 is supported below the lifting connection plate and fixed to the lifting connection plate by bolts;

[0077] The four lifting bases 132 are respectively fixed at four corners of the upper surface of the mobile platform 1 .

[0078] The guide column sleeve 133 includes: a bottom circular cylinder, and an upper circular cylinder 139 connected to the bottom circular cylinder;

[0079] The bottom annular cylinder includes a self-lubricating graphite copper sleeve 137 sleeved on the outer wall of the lifting guide column 131 and a sleeve body sleeved on the outer wall of the self-lubricating graphite copper sleeve 137; the bottom of the self-lubricating graphite copper sleeve 137 is connected to a horizontal annular bottom plate 138, the annular bottom plate 138 extends to the bottom of the sleeve body and is connected to the sleeve body by bolts; a circular top plate extends from the top of the sleeve body toward the lifting guide column 131, and the circular top plate is closely attached to the top of the self-lubricating graphite copper sleeve 137; both the circular top plate and the circular bottom plate 138 have gaps with the outer wall of the lifting guide column 131;

[0080] The upper annular cylinder 139 is sleeved on the lifting guide column 131 and the bottom end is connected to the upper surface of the annular top plate; a gap is left between the upper annular cylinder 139 and the lifting guide column 131.

[0081] The lifting base 22 is a rectangular structure, and the adjusting hydraulic cylinder 24 is only arranged near the two long edges of the lifting base 22 ; there are four adjusting hydraulic cylinders 24 , which are respectively arranged near the four lifting installation bodies 21 .

[0082] The support frame 113 is a rectangular frame; the bottom ends of the two side surfaces of the support frame 113 perpendicular to the axle 116 are lower than the bottom ends of the two side surfaces of the support frame 113 parallel to the axle 116; the bottom ends of the two side surfaces of the support frame 113 perpendicular to the axle 116 are lower than the bottom end of the axle 116.

[0083] The first pin shaft 115 and the wheel shaft 116 are parallel to each other.

[0084] Each running wheel mechanism 11 includes two running wheels 117 , and two wheel axles 116 respectively connected to the two running wheels 117 are connected through a transmission system.

[0085] A protruding structure 55 extends from the bottom of the protruding guide rail 52 toward both sides, and a limiting block 54 welded to the base 51 is disposed on the outer side of the protruding structure 55 .

[0086] A pressing plate 58 is pressed onto the limiting block 54 and the protruding structure 55 , and the pressing plate 58 is fixedly connected to the limiting block 54 by bolts.

[0087] Both sides of the base 51 are provided with inwardly concave strips; and rail hanging ears 57 are provided at the inwardly concave strips.

[0088] The use and advantages of the lifting mechanism 13 alone are as follows: the lifting base 132 and the bottom end of the lifting hydraulic cylinder are fixed on a fixed platform, and the lifting support plate 134 can be pushed up and down along the lifting guide column 131 by the telescopic end of the lifting hydraulic cylinder. The object to be lifted is placed on the lifting support plate 134, and the object is fastened to the lifting support plate 134 through bolt holes or other means to complete the lifting of the object. In addition, for the lifting of a large platform (such as the lifting base 132 in the present invention), a device of the present invention can be set under multiple corners of the large platform, and the lifting of the large platform can be achieved by synchronously controlling the lifting hydraulic cylinders of multiple devices of the present invention. The present invention is provided with a self-lubricating graphite copper sleeve 137, and only the self-lubricating graphite copper sleeve 137 contacts the lifting guide column 131 during movement, so that the lifting process is very smooth, and due to the hinged setting of the lifting ear plate 135, during the installation process, even if the hydraulic cylinder telescopic rod is not completely parallel to the lifting guide column 131, during the lifting process, since the lifting ear plate 135 can adjust its forward direction by rotating, the lifting support plate 134 can always move along the lifting guide column 131, so that it can always be in a horizontal state, so that the lifting process will be smooth and stable. The upper annular cylinder 139 generally does not contact the lifting guide rod, but the reference of the relative position of the upper annular cylinder 139 and the lifting guide column 131 can ensure the axiality during installation, and can still play a good guiding role on the guide column sleeve 133 after the self-lubricating graphite copper sleeve 137 is severely worn, so as to ensure the level of the lifting support plate 134. In addition, after the lubricating oil is filled between the upper annular cylinder 139 and the lifting guide column 131, the smoothness of lifting can be further guaranteed.

[0089] The lifting mechanism 13 is connected to the lifting connecting plate, and the lifting mechanism 13 is installed on the mobile platform 1 , so that the lifting base 132 can be lifted and lowered on the mobile platform 1 .

[0090] When in use, the rudder or paddle is installed above the lifting base 22, and the rudder or paddle is supported by a large number of balls 232. At this time, the lifting base 22 can be lifted by the lifting mechanism 13, so that the rudder or paddle is lifted to the installation position, and then the rudder or paddle is pushed to slide on the balls 232 by a plurality of adjustment hydraulic cylinders 24, so that its position in the horizontal direction can be fine-tuned until it reaches the installation position accurately. In principle, the four sides of the lifting base 22 should be installed with adjustment hydraulic cylinders 24, so that the rudder or paddle can be adjusted horizontally and longitudinally. However, since the lifting platform 2 of the present invention has been installed on a mobile platform 1 that can move in the length direction, it only needs to be fine-tuned in the width direction. At this time, it is only necessary to install the adjustment hydraulic cylinders 24 at the edge positions corresponding to the two lengths.

[0091] Next, we will introduce mobile platform 1:

[0092] First, the assembled track needs to be assembled first. Multiple track components are hoisted by the cooperation of the crane and the track lifting lug 57 and then spliced ​​for use. Since the positions of the embedding body 56 and the embedding opening 53 are set correspondingly, it can be ensured that the protruding guide rails 52 on the two adjacent track components are located on the same straight line. The setting of the limit block 54 and the pressure plate 58 can also ensure that the protruding guide rail 52 is located on the central axis. When disassembling, it is only necessary to disassemble the adjacent track components, which is very convenient.

[0093] After the track is assembled, the connecting flange 119 provided on the top of the steering hydraulic cylinder 111 is connected to the bottom of the mobile platform 1, the fixed hydraulic cylinder in the supporting mechanism 10 is retracted, and the mobile platform 1 is lifted by the mobile platform lifting lug 19 so that the walking wheel 117 at the bottom of the mobile platform 1 is erected on the assembled track. Since the center of the tread of the walking wheel 117 is concave inward, the concave structure can be erected on the convex assembled track surface for running without derailing easily, and the two lower side surfaces of the walking frame can also play a limiting role.

[0094] The power distribution cabinet 15 of the mobile platform 1 is connected to the power supply, and the hydraulic pump station 17 is controlled to start through the electrical control cabinet 16, and then the hydraulic motor reduction integrated machine 118 is controlled to start. The hydraulic motor reduction integrated machine 118 can provide power for the travel wheel 117 with a large torque. When steering is required, the fixed hydraulic cylinder in the support mechanism 10 can be extended so that the support disc is attached to the ground and continuously extended so that the mobile platform 1 is lifted above the track. At this time, the assembled track is disassembled and reinstalled in the specified direction. After the steering hydraulic cylinder 111 (its function and connection method are well known to people in the professional field of the present invention, and are not described in detail here) controls the travel wheel 117 to rotate as a whole to the direction of the track and lowers the mobile platform 1 through the support mechanism 10, so that the travel direction can be changed without changing the overall direction of the mobile platform 1. This is very convenient for large platforms, such as the mobile platform 1 used for transporting large cargo such as ship rudders and oars in the present invention.

[0095] When installing the rudder or paddle of a ship, the rudder or paddle is installed on the lifting platform 2, and the lifting platform 2 is placed on the mobile platform 1. The mobile platform 1 carrying the rudder or paddle can be controlled to move toward the axial direction of the ship, and after being transported to the installation site and installed, the platform is moved out toward the radial direction of the ship, and the rotation of the above movement direction is 90°. Due to the limited space at the bottom of the mobile platform 1, the detachable and spliced ​​nature of the spliced ​​track also plays an important role in the above steering process.

[0096] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mobile lifting platform for installing ship rudder propellers. It is characterized in that It comprises a mobile platform (1), on which a horizontal lifting platform (2) is arranged via a lifting mechanism (13); The four corners of the bottom of the mobile platform (1) are each provided with a running wheel mechanism (11), and a supporting mechanism (10) is also provided next to each running wheel mechanism (11); the running wheel mechanism (11) is mounted on an assembled track; The side of the mobile platform (1) is provided with a mobile platform lifting lug (19); a hydraulic pump station (17) is fixed at the bottom of the mobile platform (1); and a power distribution cabinet (15) and an electrical control cabinet (16) are also provided on the upper surface of the mobile platform (1); The walking wheel mechanism (11) comprises a support frame (113) with upper and lower openings, at least two walking wheels (117) are respectively fixed in the support frame (113) via wheel axles (116), and the wheel axles (116) are rollingly arranged on the support frame (113) via bearings; the center of the tread of the walking wheel (117) is concave inward; the bottom end of the wheel axle (116) is lower than the bottom ends of the two side surfaces of the support frame (113) parallel to the wheel axle (116); A support plate (112) is provided on the upper surface of the support frame (113); the two sides of the bottom of the support plate (112) are connected to vertical connecting plates (114); the connecting plate (114) is attached to the outer side of the support frame (113) and is fixed to the support frame (113) via a first pin shaft (115); the top end of the wheel shaft (116) is lower than the lower surface of the support plate (112); A vertical connection column is fixed on the upper surface of the support plate (112), the top end of the connection column is connected to the steering end of the bottom end of a vertical steering hydraulic cylinder (111), and the top end of the steering hydraulic cylinder (111) is connected to the bottom of the mobile platform (1) via a horizontally arranged connection flange (119); At least one of the wheel axles (116) is connected to a hydraulic motor reduction integrated machine (118), and the hydraulic motor reduction integrated machine (118) is fixed to the outside of the support frame (113); The support mechanism (10) comprises a fixed hydraulic cylinder fixed to the bottom of the mobile platform (1), the telescopic end of the fixed hydraulic cylinder being vertically downwardly connected to a horizontal support disc; when the telescopic end of the fixed hydraulic cylinder moves to the bottom, the support disc is lower than the bottom end of the walking wheel mechanism (11); The assembled track is formed by splicing a plurality of track components, each of which comprises a horizontally long strip-shaped base (51), a protruding guide rail (52) being pressed and fixed on the upper surface of the base (51) by a pressing plate (58), and a central axis of the protruding guide rail (52) and a central axis of the base (51) being located on the same vertical plane; The protruding guide rail (52) and the base (51) have the same length; the protruding guide rail (52) protrudes horizontally from the base (51) at the head end, thereby leaving a blank area at the tail end of the base (51); an embedding opening (53) is opened on the blank area, and the embedding opening (53) includes a truncated cone-shaped embedding hole with a smaller end facing downward, and an embedding strip connected to the embedding hole; the center of the embedding hole is located on the central axis of the base (51), and the embedding strip is located on the central axis of the base (51); an embedding body (56) corresponding to the embedding opening (53) is fixed at the bottom of the head end of the protruding guide rail (52) protruding horizontally from the base (51); Two adjacent track components are detachably connected by the embedding body (56) being embedded in the embedding opening (53); The lifting platform (2) comprises a lifting base (22) and four lifting installation bodies (21) respectively installed at four corners of the lifting base (22); the four lifting installation bodies (21) are respectively fixed to four lifting mechanisms (13); A plurality of ball devices (23) are fixedly arranged vertically and horizontally on the upper surface of the lifting base (22), and the ball device (23) comprises a cylindrical ball base (231) vertically fixed to the upper surface of the lifting base (22), and a ball (232) is arranged in the ball base (231); a ball cover plate (233) is provided on the upper cover of the ball base (231), and a cover plate opening is provided in the center of the ball cover plate (233), and the top of the ball (232) protrudes from the cover plate opening; The lifting installation body (21) comprises a support column whose bottom end is fixed to the lifting base (22), a lifting connection plate horizontally extending from the top end of the support column in a direction away from the lifting base (22), and a vertically transparent bolt hole is formed at one end of the lifting connection plate away from the support column; A plurality of adjustment hydraulic cylinders (24) are installed at the edge of the upper surface of the lifting base (22), and the telescopic ends of the adjustment hydraulic cylinders (24) are perpendicular to the edge of the lifting platform (2) and face inwards; The lifting mechanism (13) comprises a lifting base (132), a vertical lifting guide column (131) is fixed on the top of the lifting base (132), a guide column sleeve (133) is provided on the sliding sleeve of the lifting guide column (131), the guide column sleeve (133) is connected to a horizontal lifting support plate (134), a lifting ear plate (135) is fixed at the bottom of the lifting support plate (134), the lifting ear plate (135) is hinged to a connecting block through a second pin shaft (136), and the connecting block is fixed to the top end of the telescopic end of a lifting hydraulic cylinder; The lifting support plate (134) is supported below the lifting connection plate and is fixed to the lifting connection plate by bolts; The four lifting bases (132) are respectively fixed to four corners of the upper surface of the mobile platform (1); The center of the tread of the running wheel (117) is concave inwards.

2. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that The guide column sleeve (133) comprises: a bottom circular cylinder and an upper circular cylinder (139) connected to the top of the bottom circular cylinder; The bottom annular cylinder comprises a self-lubricating graphite copper sleeve (137) sleeved on the outer wall of the lifting guide column (131) and a sleeve body sleeved on the outer wall of the self-lubricating graphite copper sleeve (137); the bottom of the self-lubricating graphite copper sleeve (137) is connected to a horizontal annular bottom plate (138), the annular bottom plate (138) extends to the bottom of the sleeve body and is connected to the sleeve body by bolts; the top of the sleeve body extends a annular top plate toward the lifting guide column (131), the annular top plate is closely attached to the top of the self-lubricating graphite copper sleeve (137); the annular top plate and the annular bottom plate (138) are both spaced apart from the outer wall of the lifting guide column (131); The upper annular cylinder (139) is sleeved on the lifting guide column (131) and the bottom end is connected to the upper surface of the annular top plate; a gap is left between the upper annular cylinder (139) and the lifting guide column (131).

3. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that The lifting base (22) is a rectangular structure, and the adjusting hydraulic cylinder (24) is only arranged near two long edge positions of the lifting base (22); four adjusting hydraulic cylinders (24) are arranged, and the four adjusting hydraulic cylinders (24) are respectively arranged near four lifting installation bodies (21).

4. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that The support frame (113) is a rectangular frame; the bottom ends of the two side surfaces of the support frame (113) perpendicular to the wheel axle (116) are lower than the bottom ends of the two side surfaces of the support frame (113) parallel to the wheel axle (116); the bottom ends of the two side surfaces of the support frame (113) perpendicular to the wheel axle (116) are lower than the bottom end of the wheel axle (116).

5. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that The first pin shaft (115) and the wheel shaft (116) are parallel to each other.

6. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that Each of the walking wheel mechanisms (11) comprises two walking wheels (117), and the two wheel axles (116) respectively connected to the two walking wheels (117) are connected via a transmission system.

7. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that A protruding structure (55) extends from the bottom of the protruding guide rail (52) toward both sides, and a limiting block (54) welded to the base (51) is arranged on the outside of the protruding structure (55).

8. The mobile lifting platform for installing a ship's rudder propeller according to claim 7, It is characterized in that A pressure plate (58) is pressed onto the limit block (54) and the protruding structure (55), and the pressure plate (58) is fixedly connected to the limit block (54) by bolts.

9. The mobile lifting platform for installing a ship's rudder propeller according to claim 1, It is characterized in that The base (51) is provided with concave strips on both sides; and track hanging ears (57) are provided on the concave strips.

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