Lifting oil cylinder for ship undocking
By using a gradient plate to fill the gap between the slider and the vehicle body in the lifting cylinder, and combining this with a distance sensor to control the movement of the piston rod, the problem of the lifting cylinder swaying during the ship's undocking process was solved, improving positioning accuracy and equipment stability.
Patent Information
- Application Number
- CN202520146907.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In the existing technology, there is a lateral clearance in the sliding contact part between the lifting cylinder and the vehicle body, which makes the lifting cylinder prone to swaying left and right during movement, affecting the smooth lifting of the ship.
A gradient plate is inserted between the slider and the vehicle body to fill the lateral gap. The stable movement of the gradient plate is ensured by bolt assemblies and guide plates. At the same time, a distance sensor is set on the piston rod to precisely control the start and stop of the hydraulic cylinder.
The fitting accuracy between the flange plate and the vehicle body was improved, which prevented the lifting cylinder from shaking, reduced the manufacturing precision requirements of the equipment, and enabled precise position control through sensors.
Smart Images
Figure CN223594603U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the design technical field of oil cylinder especially relates to a lifting oil cylinder for ship undocking. BACKGROUND
[0002] The ship is generally built in the dock, if the ship is built in the inner field of the dock, needs using the jacking trolley equipped with the lifting oil cylinder to move and lift to the suitable position of the outer field after building, then adds water to the dock, makes the ship sail out of the dock.
[0003] The lifting oil cylinder in the jacking trolley is slidably connected with the vehicle body through the flange plate fixed on the cylinder body, and the ship needs to be lifted by the cooperation of several jacking trolleys, in order to ensure the stable lifting of the ship, the piston rod of each jacking oil cylinder needs to act on the specified point of the ship accurately, which requires the flange plate and the vehicle body to have high assembly accuracy, specifically, the two side surfaces of the flange plate parallel to the sliding direction are attached to the sliding groove wall surface of the vehicle body to prevent the lifting oil cylinder from shaking left and right during movement, which requires high machining accuracy of the flange plate and the vehicle body sliding groove, but in the actual manufacturing process, there is usually a certain gap between the flange plate and the sliding groove of the vehicle body due to manufacturing errors, which causes difficulty in finding the point when the ship is lifted. UTILITY MODEL CONTENTS
[0004] In order to solve the technical problem that the sliding cooperation part of the lifting oil cylinder and the vehicle body in the jacking trolley of the prior art has a horizontal gap, which causes the lifting oil cylinder to shake left and right during sliding, the utility model provides a lifting oil cylinder for ship undocking to solve the above problems.
[0005] The utility model adopts the technical scheme that a kind of lifting oil cylinder for ship undocking, including cylinder body, piston, piston rod and gradient plate, one end of the cylinder body is flange plate, the horizontal both sides of the flange plate have the sliding block portion of the sliding cooperation with the vehicle body of jacking trolley, the gradient plate is located in the horizontal side or both sides of flange plate, gradient plate can be inserted between the horizontal outer side of sliding block portion and vehicle body, and the thickness of gradient plate is varied along the direction of insertion, for filling the horizontal gap between sliding block portion and vehicle body.
[0006] In the optional implementation of the utility model, the horizontal outer side of the sliding block portion is provided with bearing piece, and the gradient plate can be inserted between the horizontal outer side of the sliding block portion and the bearing piece.
[0007] In the optional implementation of the utility model, the gradient plate is inserted between the sliding block portion and the vehicle body along the sliding direction of the lifting oil cylinder.
[0008] In the optional implementation of the utility model, the sliding direction one end of the sliding block portion is provided with adjusting block, and the adjusting block is connected with the sliding block portion and the gradient plate by bolt assembly respectively.
[0009] In the optional embodiment of the utility model, the upper surface of the sliding block part is fixed with a bearing sheet, and the lower surface of the sliding block part is fixed with an anti-abrasion sheet.
[0010] In the optional embodiment of the utility model, the sliding block part where the gradient plate is located has a transversely protruding guide plate, and the gradient plate reciprocates along the guide plate.
[0011] In the optional embodiment of the utility model, the outer periphery of the piston rod is connected with a hoop, the cylinder body is externally provided with an axially extending guide rail and a sliding block in sliding cooperation with the guide rail, a distance sensor is fixed on the guide rail, the sliding block is connected with the hoop through a pull rod, and the piston rod drives the sliding block to approach or move away from the distance sensor.
[0012] In the optional embodiment of the utility model, the outer periphery of the piston rod has a necked section for fixing the hoop, and the necked section is located below the flange plate.
[0013] In the optional embodiment of the utility model, the cylinder body comprises a cylinder barrel and a cylinder bottom, the cylinder bottom and the flange plate are located at two ends of the cylinder barrel, and both oil ports are located on the flange plate.
[0014] The utility model has the advantages of:
[0015] (1) The utility model can flexibly adjust the distance between the two lateral sides of the flange plate through the gradient plate, thereby ensuring that the flange plate perfectly matches the inner wall of the vehicle body, avoiding left and right shaking of the lifting oil cylinder, improving positioning accuracy, and reducing the manufacturing precision requirement of the equipment.
[0016] (2) The utility model is externally provided with a distance sensor, and the sliding block is driven to move by the piston rod, and the distance sensor controls the start and stop of the lifting oil cylinder by sensing the movement of the sliding block. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be further described in combination with the drawings and examples.
[0018] Figure 1 is the perspective view of the specific embodiment of the lifting oil cylinder for ship launching of the utility model;
[0019] Figure 2 is the front view of the specific embodiment of the lifting oil cylinder for ship launching of the utility model;
[0020] Figure 3 is Figure 2 the A-A sectional view of
[0021] Figure 4The utility model discloses a cooperation relation schematic diagram of lifting oil cylinder and vehicle body for ship launching.
[0022] Figure 5 Figure 4 The enlarged view at a in the middle;
[0023] Figure 6 The utility model discloses a cooperation relation schematic diagram of gradient plate and sliding block part.
[0024] In the drawing, 1, cylinder body, 101, flange plate, 102, cylinder barrel, 103, cylinder bottom, 2, piston, 3, piston rod, 4, gradient plate, 5, sliding block part, 6, vehicle body, 7, bearing piece, 8, anti-abrasion piece, 9, adjusting block, 10, bolt assembly, 11, guide plate, 12, oil port, 13, hoop, 14, guide rail, 15, sliding block, 16, distance sensor, 17, pull rod, 18, necking section. DETAILED DESCRIPTION
[0025] The embodiments of the utility model are described in detail below, the example of the embodiment is shown in the drawing, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.
[0026] Embodiment one
[0027] A kind of lifting oil cylinder for ship launching, including cylinder body 1, piston 2, piston rod 3 and gradient plate 4, one end of cylinder body 1 is flange plate 101, flange plate 101 has sliding block part 5 with the sliding fit of the vehicle body 6 of jacking trolley on the transverse both sides, gradient plate 4 is located in the transverse side or both sides of flange plate 101, gradient plate 4 can be inserted between the transverse outside surface of sliding block part 5 and vehicle body 6, and the thickness of gradient plate 4 is gradually changed along the insertion direction, for filling the transverse gap between sliding block part 5 and vehicle body 6.
[0028] As Figures 1-3 Shown, cylinder body 1 includes cylinder barrel 102 and cylinder bottom 103, cylinder bottom 103 and flange plate 101 are located at both ends of cylinder barrel 102, cylinder barrel 102 is the barrel structure of both ends through, piston 2 reciprocates in cylinder barrel 102, one end of piston rod 3 is located in cylinder barrel 102, the other end extends from flange plate 101, piston 2 and cylinder bottom 103 form rodless cavity, piston 2 and flange plate 101 form rod cavity, two oil ports 12 are all located on flange plate 101, one of which oil ports 12 is communicated with rod cavity, and the other oil port 12 is communicated with rodless cavity by the passage of cylinder barrel 102.
[0029] Lifting oil cylinder and the vehicle body 6 of jacking trolley are sliding fit, lifting oil cylinder can slide in vehicle body 6 along straight line, for adjusting longitudinal position.
[0030] For ease of description, in this utility model, the direction in which the lifting cylinder slides relative to the vehicle body 6 is the longitudinal or front-back direction, and the direction perpendicular to the longitudinal direction in the horizontal plane is the lateral or left-right direction.
[0031] like Figure 4 The diagram shows the fit between the flange plate 101 of the lifting cylinder and the vehicle body 6. The lateral sides of the flange plate 101 need to be as close as possible to the inner wall of the vehicle body 6 to prevent the lifting cylinder from swaying left and right during movement, which would cause inaccurate positioning of the lifting cylinder's support point on the hull. The gradient plate 4 can be adjusted when there is a gap between the slider part 5 and the vehicle body 6. Since the thickness of the gradient plate 4 is variable, the different gaps between the slider part 5 and the vehicle body 6 can be compensated by adjusting the depth of insertion of the gradient plate 4, making the operation simple and quick.
[0032] To reduce friction between the slider 5 and the vehicle body 6, such as Figure 1 and Figure 5 As shown, in this embodiment, a bearing plate 7 is provided on the lateral outer side of the slider part 5, and the gradient plate 4 can be inserted between the lateral outer side of the slider part 5 and the bearing plate 7. The bearing plate 7 is a prior art material used between two components for sliding friction. It can be designed to conform to the shape of the outer side of the slider part 5. After the gradient plate 4 is adjusted to the correct gap, the bearing plate 7 is fixed to the gradient plate 4 or the slider part 5. The bearing plate 7 can be a self-lubricating bearing plate 7.
[0033] Similarly, the upper surface of the slider part 5 also slides in contact with the vehicle body 6, so the upper surface of the slider part 5 is also fixed with a bearing plate 7.
[0034] The hull is located at the top of the slider section 5. During the process of moving the lifting trolley, the contact surface between the slider section 5 and the trolley body 6 will bear a large pressure and friction. Therefore, it is preferable to fix an anti-wear plate 8 on the lower surface of the slider section 5. The anti-wear plate 8 is made of wear-resistant material.
[0035] The gradient plate 4 can be inserted between the slider part 5 and the vehicle body 6 in the longitudinal or vertical direction. However, the slider part 5 in the vertical direction is relatively thin, and if the gradient plate 4 has an excessively long gradient, it will occupy a lot of height space, which is not conducive to the lifting operation. Therefore, in this embodiment, the gradient plate 4 is inserted between the slider part 5 and the vehicle body 6 along the sliding direction of the lifting cylinder. Figure 6 As shown, during installation, the thinner end of the gradient plate 4 is inserted first between the slider part 5 and the vehicle body 6. As the insertion depth of the gradient plate 4 increases, the lateral space occupied by the gradient plate 4 becomes larger.
[0036] Installation of gradient plate 4:
[0037] like Figure 6As shown, the sliding direction of the slider part 5 is provided with an adjusting block 9, and the adjusting block 9 is connected with the slider part 5 and the gradient plate 4 through a bolt assembly 10. The bolt assembly 10 generally includes a bolt and a nut, and the adjusting block 9 can be fixed with the gradient plate 4 through the bolt assembly 10, and the gradient plate 4 moves synchronously with the adjusting block 9. When the gradient plate 4 needs to move forward and backward, the bolt assembly 10 connecting the adjusting block 9 and the slider part 5 is loosened, the distance between the adjusting block 9 and the slider part 5 is adjusted, and after the adjustment is completed, the bolt assembly 10 connecting the adjusting block 9 and the slider part 5 is locked. The adjusting block 9 and the slider part 5 can also be fixed, and the movement of the slider part 5 can be realized by adjusting the distance between the adjusting block 9 and the slider part 5.
[0038] In order to ensure the linear motion of the gradient plate 4, it is preferred that the slider part 5 where the gradient plate 4 is located has a transversely protruding guide plate 11, and the gradient plate 4 reciprocates along the guide plate 11, as shown in Figure 5 As shown, the guide plate 11 is located at the bottom of the slider part 5, and the bottom surface of the gradient plate 4 is attached to the guide plate 11. In other optional embodiments, the guide plate 11 can also be located at the top of the slider part 5. After the gradient plate 4 is moved to the appropriate position, the outer bearing piece 7 is fixed with the gradient plate 4 by using a screw.
[0039] Example two
[0040] On the basis of example one, the piston rod 3 extension length is accurately controlled by the sensor detection method, and the specific structure is as follows:
[0041] As shown in Figure 1 and Figure 2 The outer periphery of the piston rod 3 is connected with a hoop 13, the outer part of the cylinder body 1 is provided with an axially extending guide rail 14 and a sliding block 15 in sliding cooperation with the guide rail 14, the guide rail 14 is fixed with a distance sensor 16, the sliding block 15 is connected with the hoop 13 through a pull rod 17, and the piston rod 3 drives the sliding block 15 to approach or move away from the distance sensor 16. The distance sensor 16 is opposite to the sliding block 15, and is used for sensing the movement distance of the sliding block 15. The closest distance between the sliding block 15 and the distance sensor 16, that is, the maximum length of the retraction of the piston rod 3, can be set, and the farthest distance between the sliding block 15 and the distance sensor 16, that is, the maximum length of the extension of the piston rod 3, can also be set.
[0042] The hoop 13 can be tightly held on the outer periphery of the piston rod 3, and the installation is convenient. In order to avoid that the hoop 13 slides on the piston rod 3 in the axial direction, causing the test accuracy of the distance sensor 16 to be reduced, the outer periphery of the piston rod 3 in the embodiment has a necked section 18 for fixing the hoop 13, and the necked section 18 is located below the flange plate 101, and the necked section 18 can axially limit the hoop 13.
[0043] In the description of the utility model, need understanding is, the term "thickness", "upper", "lower", "front", "back", "left", "right" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as a limitation on the utility model.
[0044] In this specification, the illustrative representations of the terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments in a suitable manner.
[0045] The above is the inspiration of the ideal embodiment according to the utility model, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A lifting cylinder for launching a ship from dry dock, characterized in that: It includes a cylinder, a piston, a piston rod, and a gradient plate. One end of the cylinder is a flange plate. The flange plate has sliders on both sides that slide with the body of the lifting trolley. The gradient plate is located on one or both sides of the flange plate. The gradient plate can be inserted between the outer side of the slider and the body, and the thickness of the gradient plate varies along the insertion direction to fill the lateral gap between the slider and the body.
2. The lifting cylinder for ship undocking according to claim 1, characterized in that: A bearing plate is provided on the lateral outer side of the slider part, and the gradient plate can be inserted between the lateral outer side of the slider part and the bearing plate.
3. The lifting cylinder for ship undocking according to claim 1, characterized in that: The gradient plate is inserted between the slider and the vehicle body along the sliding direction of the lifting cylinder.
4. The lifting cylinder for ship undocking according to claim 3, characterized in that: An adjustment block is provided at one end of the sliding direction of the slider part, and the adjustment block is connected to the slider part and the gradient plate respectively by bolt assembly.
5. The lifting cylinder for ship undocking according to claim 1, characterized in that: A bearing plate is fixed to the upper surface of the slider, and an anti-wear plate is fixed to the lower surface of the slider.
6. The lifting cylinder for ship undocking according to claim 4, characterized in that: The slider section where the gradient plate is located has a laterally protruding guide plate, and the gradient plate reciprocates along the guide plate.
7. The lifting cylinder for ship undocking according to claim 1, characterized in that: The piston rod is connected to a clamp on its outer periphery. The cylinder body is provided with an axially extending guide rail and a slider that slides with the guide rail. A distance sensor is fixed on the guide rail. The slider is connected to the clamp via a pull rod. The piston rod drives the slider to move closer to or away from the distance sensor.
8. The lifting cylinder for ship undocking according to claim 1, characterized in that: The piston rod has a necked section with a fixed clamp on its outer periphery, and the necked section is located below the flange plate.
9. The lifting cylinder for ship undocking according to claim 1, characterized in that: The cylinder body includes a cylinder barrel and a cylinder bottom. The cylinder bottom and a flange plate are located at both ends of the cylinder barrel, and both oil ports are located on the flange plate.