Lightweight rotating sleeve for tail frame of rotating coupler
By introducing lubrication and snap-fit components into the rotating sleeve of the rotating hook tail frame, the problem of wear caused by high friction is solved, resulting in a longer service life and easier maintenance.
Patent Information
- Application Number
- CN202520559201.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The existing rotary hook tail frame rotating sleeve lacks lubrication components, resulting in high friction, excessive wear, and reduced service life.
A lightweight rotating hook tail frame rotating sleeve was designed, which includes a lubrication component and a snap-fit component. The lubrication component lubricates the rotating sleeve to reduce friction, and the snap-fit component enables convenient disassembly and replacement of the components.
It effectively reduces friction during rotation, extends service life, facilitates individual component replacement and maintenance, and enhances the device's performance.
Smart Images

Figure CN223864862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rail transit, specifically to a lightweight rotating hook tail frame rotating sleeve. Background Technology
[0002] The coupler and the coupler tail frame are installed together to connect, traction, and buffer between vehicles. In order to facilitate the turning of the vehicle connected to the coupler tail frame, the coupler tail frame and the coupler are usually designed to rotate relative to each other, so that the cargo box connected to the coupler tail frame at the rear of the vehicle can form a certain angle to facilitate the turning of the vehicle. The rotating shaft part connecting the coupler and the coupler tail frame is usually fitted with a rotating sleeve, which passes through the coupler tail frame and the coupler in sequence to rotate together.
[0003] A rotating sleeve for a rotating hook tail frame, as disclosed in CN202222305447.2, includes an upper frame plate, a lower frame plate, a tail frame plate, a hook tail pin, and a coupler. A rotating upper sleeve is movably inserted into the surface of the upper frame plate. An upper rotating tube is movably connected to the inner wall of the rotating upper sleeve. A middle rotating tube is fixedly connected to the bottom of the upper rotating tube, and a lower rotating tube is fixedly connected to the bottom of the middle rotating tube. A rotating lower sleeve is movably inserted into the surface of the lower frame plate and is fitted onto the surface of the lower rotating tube. The middle rotating tube penetrates the surface of the coupler. The hook tail pin passes sequentially through the surfaces of the upper rotating tube, the middle rotating tube, and the lower rotating tube. This rotating sleeve can reduce wear. Compared to traditional rotating sleeves, when the coupler rotates between the upper and lower frame plates, the friction between the rotating sleeve and the coupler, upper and lower frame plates is greater, resulting in more wear and thus improving the service life of the components.
[0004] The rotating sleeve for the rotating hook tail frame proposed in the aforementioned patent can reduce wear during use, but it lacks a component for lubricating the rotating parts. The friction generated during rotation still exists, which will still cause wear over time, which is not conducive to the long-term use of the device and reduces its effectiveness.
[0005] Therefore, we propose a lightweight rotating hook tail frame rotating sleeve to solve the problems mentioned above. Utility Model Content
[0006] The purpose of this invention is to provide a lightweight rotating hook tail frame rotating sleeve to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight rotating hook tail frame rotating sleeve, comprising a frame plate body and a hook disposed on the right side of the inner cavity of the frame plate body. The hook has a circular opening near the left side, and a rotating ring is fixedly installed through the inner cavity of the circular opening. Circular plates are respectively attached to the top and bottom of the rotating ring. A rotating rod is fixedly installed through the middle of the circular plate. The opposite ends of the rotating rods are attached together. Circular openings are respectively opened at the top and bottom near the right side of the frame plate body, and the opposite ends of the rotating rods pass through the adjacent circular openings and extend to the outside of the frame plate body. The output ends of the rotating rods are respectively movably mounted with fixed plates through bearings. A snap-fit assembly is installed on the right side of the fixed plate, and a lubrication assembly is installed on the left side of the fixed plate.
[0008] The lubrication assembly includes a sliding plate located on the left side of the upper fixed plate and a lubricating oil tank fixedly installed in the middle of the left side of the sliding plate. The bottom of the sliding plate is slidably installed on the frame plate body. An oil pump is fixedly installed in the middle of the top of the lubricating oil tank. A suction pipe is fixedly installed on the front side of the oil pump. The lower end of the suction pipe is fixedly extended through the inner cavity of the lubricating oil tank. An oil dripping pipe is fixedly installed on the top of the oil pump. A push-pull plate is fixedly installed in the middle of the top of the sliding plate. The outer side of the oil dripping pipe is fixedly installed through the push-pull plate.
[0009] Preferably, an oil injection pipe is fixedly installed through the top of the lubricating oil tank near the rear side, and a valve is provided on the outside of the oil injection pipe.
[0010] Preferably, arc-shaped locking blocks are fixedly installed on the opposite side of the circular plate near the left and right sides, and arc-shaped locking grooves are respectively opened on the top and bottom of the rotating ring near the left and right sides, with the outer side of the arc-shaped locking blocks being inserted into the inner cavity of the adjacent arc-shaped locking grooves.
[0011] Preferably, a block is fixedly installed at the lower end of the rotating rod mentioned above, and a square groove is opened at the upper end of the lower block, with the outer side of the block inserted into the inner cavity of the square groove.
[0012] Preferably, the snap-fit assembly includes a fixing seat located on the right side of the fixing plate and a side plate fixedly installed on the top of the fixing seat near the right side. The bottom of the fixing seat is fixedly installed on the frame plate body. A T-shaped screw is threaded through the side plate. A trapezoidal extrusion block is movably installed on the left end of the T-shaped screw. The bottom of the trapezoidal extrusion block is slidably installed on the fixing seat. Trapezoidal blocks are respectively attached to the front and rear sides of the trapezoidal extrusion block. A fixing rod is fixedly installed on the opposite side of the trapezoidal block. A movable plate is fixedly installed on the opposite end of the fixing rod.
[0013] Preferably, a snap-fit block is fixedly installed on the opposite side of the movable plate near the left side, and a snap-fit rod is provided on the opposite side of the movable plate. A snap-fit interface is opened on the snap-fit rod near the right side. The opposite side of the snap-fit block is inserted into the inner cavity of the adjacent snap-fit interface, and the left end of the snap-fit rod slides through and extends to the outside of the fixed plate, and is fixedly installed on the sliding plate.
[0014] Preferably, vertical plates are provided on the opposite side of the movable plate, and the bottom of the vertical plates are fixedly installed on the frame plate body. The vertical plates are elastically connected to the adjacent movable plates by two telescopic springs, and the telescopic springs are arranged on the left and right sides.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. Through the cooperation of components such as the fixed seat, side plate, T-shaped screw, trapezoidal extrusion block, trapezoidal block, fixed rod, movable plate, vertical plate, telescopic spring, snap-fit block and snap-fit rod, the fixed plate can be snapped and fixed, thereby enabling the separation of the rotating rod and the circular plate from the rotating sleeve. This facilitates the separation of the frame plate body from the coupler, and also makes it easier to replace damaged parts individually. Disassembly is convenient, improving the effectiveness of the device.
[0017] 2. Through the cooperation of components such as the sliding plate, lubricating oil tank, oil pump and push-pull plate, the bearing between the fixed plate and the rotating rod can be lubricated, thereby effectively reducing the friction generated during rotation, improving its service life, and further enhancing the effectiveness of the device. Attached Figure Description
[0018] Figure 1 This is a perspective view of the entire utility model;
[0019] Figure 2 This is a partial bottom-view sectional perspective view of the present invention;
[0020] Figure 3 This is a partial three-dimensional view of the rotating sleeve of this utility model;
[0021] Figure 4 This is a partial cross-sectional perspective view of the rotating sleeve of this utility model;
[0022] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle;
[0023] Figure 6 This is a partial cross-sectional perspective view of the fixing plate of this utility model;
[0024] Figure 7 This is a partial three-dimensional view of the rotating rod of this utility model;
[0025] Figure 8 This is a partial three-dimensional view of the arc-shaped card block of this utility model;
[0026] Figure 9 For the present utility model Figure 6 Enlarged view at point B in the middle;
[0027] Figure 10 For the present utility model Figure 8 Enlarged view of point C in the middle.
[0028] In the diagram: 1. Frame plate body; 2. Coupler; 3. Rotating ring; 4. Circular plate; 41. Arc-shaped locking block; 5. Rotating rod; 51. Square block; 6. Fixed plate; 7. Snap-fit assembly; 71. Fixed seat; 72. Side plate; 73. T-shaped screw; 74. Trapezoidal extrusion block; 75. Trapezoidal block; 76. Fixed rod; 77. Movable plate; 771. Vertical plate; 772. Telescopic spring; 78. Snap-fit block; 79. Snap-fit rod; 8. Lubrication assembly; 81. Sliding plate; 82. Lubricating oil tank; 83. Oil pump; 84. Push-pull plate. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Example 1
[0031] Please see Figure 1-10 A lightweight rotating hook tail frame rotating sleeve includes a frame plate body 1 and a hook 2 disposed on the right side of the inner cavity of the frame plate body 1. A circular opening is provided on the hook 2 near the left side, and a rotating ring 3 is fixedly installed through the inner cavity of the circular opening. Circular plates 4 are respectively attached to the top and bottom of the rotating ring 3. A rotating rod 5 is fixedly installed through the middle of the circular plate 4. The opposite ends of the rotating rod 5 are attached together. Circular openings are respectively provided on the top and bottom near the right side of the frame plate body 1, and the opposite ends of the rotating rod 5 pass through the adjacent circular openings and extend to the outside of the frame plate body 1. The output ends of the rotating rod 5 are respectively movably mounted with fixed plates 6 through bearings. A snap-fit assembly 7 is installed on the right side of the fixed plate 6, and a lubrication assembly 8 is installed on the left side of the fixed plate 6. The snap-fit assembly 7 can realize the separation between the frame plate body 1 and the hook 2, and the lubrication assembly 8 can realize the lubrication of the bearings between the rotating rod 5 and the fixed plate 6, reducing friction.
[0032] In this embodiment, the lubrication assembly 8 includes a sliding plate 81 disposed on the left side of the upper fixed plate 6 and a lubricating oil tank 82 fixedly installed on the middle left side of the sliding plate 81. The bottom of the sliding plate 81 is slidably mounted on the frame plate body 1. An oil pump 83 is fixedly installed at the middle of the top of the lubricating oil tank 82. A suction pipe is fixedly installed on the front side of the oil pump 83. The lower end of the suction pipe is fixedly extended through into the inner cavity of the lubricating oil tank 82. An oil dripping pipe is fixedly installed on the top of the oil pump 83. A push-pull plate 84 is fixedly installed at the middle of the top of the sliding plate 81. The outer side of the oil dripping pipe is fixedly installed through the push-pull plate 84, which serves to lubricate the bearing between the rotating rod 5 and the fixed plate 6, thereby reducing friction and improving service life.
[0033] Specifically, an oil injection pipe is fixedly installed through the top of the lubricating oil tank 82 near the rear side, and a valve is provided on the outside of the oil injection pipe to facilitate the injection of lubricating oil into the lubricating oil tank 82 through the oil injection pipe.
[0034] Specifically, arc-shaped locking blocks 41 are fixedly installed on the opposite side of the circular plate 4 near the left and right sides, and arc-shaped slots are opened on the top and bottom of the rotating ring 3 near the left and right sides. The outer side of the arc-shaped locking blocks 41 is inserted into the inner cavity of the adjacent arc-shaped slots, which serves to lock and position the circular plate 4 and the rotating ring 3, so as to achieve synchronous rotation.
[0035] Specifically, a block 51 is fixedly installed at the lower end of the upper rotating rod 5, and a square groove is opened at the upper end of the lower block 51. The outer side of the block 51 is inserted into the inner cavity of the square groove, which can separate the upper and lower rotating rods 5 and achieve synchronous fitting and positioning.
[0036] In this embodiment: During use, the cooperation between the frame plate body 1 and the coupler 2 can realize the coupling and traction of vehicles. The frame plate body 1 and the coupler 2 can also be rotated by the rotating rod 5. During rotation, the bearing between the rotating rod 5 and the fixed plate 6 can be lubricated periodically. The operation of the oil pump 83 will draw lubricating oil from the lubricating oil tank 82 and drip it onto the adjacent bearing through the oil drip pipe, thereby lubricating the bearing and the rotating rod 5, which can effectively reduce friction and improve service life.
[0037] Example 2
[0038] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 1-7 and Figure 9-10The snap-fit assembly 7 includes a fixing seat 71 located on the right side of the fixing plate 6 and a side plate 72 fixedly installed on the top of the fixing seat 71 near the right side. The bottom of the fixing seat 71 is fixedly installed on the frame plate body 1. A T-shaped screw 73 is threaded through the side plate 72. A trapezoidal pressing block 74 is movably installed on the left end of the T-shaped screw 73. The bottom of the trapezoidal pressing block 74 is slidably installed on the fixing seat 71. Trapezoidal blocks 75 are respectively attached to the front and rear sides of the trapezoidal pressing block 74. A fixing rod 76 is fixedly installed on the opposite side of the trapezoidal block 75. A movable plate 77 is fixedly installed on the opposite end of the fixing rod 76. This assembly can release the snap-fit positioning of the fixing plate 6, thereby separating the frame plate body 1 from the coupler 2. The operation is convenient and facilitates the replacement of damaged parts.
[0039] Specifically, on the opposite side of the movable plate 77, near the left side, a snap-fit block 78 is fixedly installed, and on the opposite side of the movable plate 77, a snap-fit rod 79 is provided. On the snap-fit rod 79, near the right side, a snap-fit interface is opened. The opposite side of the snap-fit block 78 is inserted into the inner cavity of the adjacent snap-fit interface, and the left end of the snap-fit rod 79 slides through and extends to the outside of the fixed plate 6, and is fixedly installed on the sliding plate 81, which facilitates the unfolding and release of the snap-fit operation.
[0040] Specifically, vertical plates 771 are respectively provided on the opposite side of the movable plate 77, and the bottom of the vertical plates 771 are respectively fixedly installed on the frame plate body 1. The vertical plates 771 and the adjacent movable plates 77 are elastically connected by two telescopic springs 772, and the telescopic springs 772 are arranged left and right to facilitate the movement and restoration of the movable plates 77.
[0041] In this embodiment: during inspection and maintenance, the two T-shaped screws 73 on the right side can be rotated. When the T-shaped screws 73 rotate, they will drive the adjacent trapezoidal pressing block 74 to move to the left. When the trapezoidal pressing block 74 moves to the left, it will press the adjacent trapezoidal blocks 75 on the front and rear sides to move in the opposite direction. When the trapezoidal blocks 75 move in the opposite direction, they will drive the adjacent movable plate 77 to move in the opposite direction through the fixed rod 76. When the movable plate 77 moves in the opposite direction, it will drive the adjacent snap-fit block 78 to move in the opposite direction, so that it is away from the inner cavity of the adjacent snap-fit interface, thereby releasing the snap-fit rod 79. Then, pulling the push-pull plate 84 to the left will drive the snap-fit rod 79 to move to the left, thereby moving it away from the adjacent fixed plate 6. At this time, the fixed plate 6 can be moved to the opposite side, thereby driving the upper and lower rotating rods 5 to move in the opposite direction away from the inner cavity of the rotating ring 3. At the same time, it will also drive the circular plate 4 and the arc-shaped snap-fit block 41 away from the outer side of the rotating ring 3, realizing the separation operation. Conversely, it can be re-snap and fix.
[0042] Working Principle: During use, the cooperation between the frame plate body 1 and the coupler 2 enables coupling and traction between vehicles. The frame plate body 1 and the coupler 2 can also rotate using the rotating rod 5. During rotation, the bearings between the rotating rod 5 and the fixed plate 6 are periodically lubricated. The oil pump 83 draws lubricating oil from the lubrication tank 82 and drips it onto adjacent bearings through the drip pipe, thus lubricating the bearings and the rotating rod 5, effectively reducing friction and extending service life. During inspection and maintenance, the two T-shaped screws 73 on the right side can be rotated. The rotation of the T-shaped screws 73 causes the adjacent trapezoidal extrusion blocks 74 to move to the left. When the trapezoidal extrusion blocks 74 move to the left, they compress the adjacent front and rear sides. The trapezoidal block 75 moves in the opposite direction. When the trapezoidal block 75 moves in the opposite direction, it will drive the adjacent movable plate 77 to move in the opposite direction through the fixed rod 76. When the movable plate 77 moves in the opposite direction, it will drive the adjacent snap-fit block 78 to move in the opposite direction, so that it is away from the inner cavity of the adjacent snap-fit interface, thereby releasing the snap-fit rod 79. Then, pulling the push-pull plate 84 to the left will drive the snap-fit rod 79 to move to the left, thereby moving away from the adjacent fixed plate 6. At this time, the fixed plate 6 can be moved to the opposite side, thereby driving the upper and lower rotating rods 5 to move in the opposite direction away from the inner cavity of the rotating ring 3. At the same time, it will also drive the circular plate 4 and the arc-shaped snap-fit block 41 away from the outer side of the rotating ring 3, realizing the separation operation. During maintenance, if a severely damaged part is encountered, it can be replaced, and it can be re-snap and fixed in the opposite direction.
[0043] All components involved in this application can meet the requirements of this application, and the model and material can be selected according to actual needs. Therefore, this application will not elaborate further.
[0044] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A lightweight rotating hook tail frame rotating sleeve, comprising a frame plate body (1) and a hook (2) disposed on the right side of the inner cavity of the frame plate body (1), characterized in that: The coupler (2) has a circular opening near the left side, and a rotating ring (3) is fixedly installed through the inner cavity of the circular opening. A circular plate (4) is attached to the top and bottom of the rotating ring (3). A rotating rod (5) is fixedly installed through the middle of the circular plate (4). The opposite ends of the rotating rod (5) are attached to each other. A circular opening is opened near the right side of the top and bottom of the frame plate body (1). The opposite ends of the rotating rod (5) pass through the adjacent circular openings and extend to the outside of the frame plate body (1). The output ends of the rotating rod (5) are movably installed with a fixed plate (6) through a bearing. A snap-fit assembly (7) is installed on the right side of the fixed plate (6), and a lubrication assembly (8) is installed on the left side of the fixed plate (6). The lubrication assembly (8) includes a sliding plate (81) located on the left side of the upper fixed plate (6) and a lubricating oil tank (82) fixedly installed on the middle left side of the sliding plate (81). The bottom of the sliding plate (81) is slidably installed on the frame plate body (1). An oil pump (83) is fixedly installed at the middle top of the lubricating oil tank (82). A suction pipe is fixedly installed on the front side of the oil pump (83). The lower end of the suction pipe is fixedly extended through the inner cavity of the lubricating oil tank (82). An oil dripping pipe is fixedly installed on the top of the oil pump (83). A push-pull plate (84) is fixedly installed at the middle top of the sliding plate (81). The outer side of the oil dripping pipe is fixedly installed through the push-pull plate (84).
2. The lightweight rotating hook tail frame rotating sleeve according to claim 1, characterized in that: An oil injection pipe is fixedly installed on the top of the lubricating oil tank (82) near the rear side, and a valve is provided on the outside of the oil injection pipe.
3. The lightweight rotating hook tail frame rotating sleeve according to claim 1, characterized in that: The circular plate (4) has arc-shaped card blocks (41) fixedly installed on one side near the left and right sides, and the top and bottom of the rotating ring (3) are respectively provided with arc-shaped card slots near the left and right sides. The outer side of the arc-shaped card blocks (41) is inserted into the inner cavity of the adjacent arc-shaped card slots.
4. The lightweight rotating hook tail frame rotating sleeve according to claim 1, characterized in that: The lower end of the rotating rod (5) mentioned above is fixedly installed with a block (51), and the upper end of the lower block (51) is provided with a square groove, and the outer side of the block (51) is inserted into the inner cavity of the square groove.
5. The lightweight rotating hook tail frame rotating sleeve according to claim 1, characterized in that: The snap-fit assembly (7) includes a fixed seat (71) located on the right side of the fixed plate (6) and a side plate (72) fixedly installed on the top of the fixed seat (71) near the right side. The bottom of the fixed seat (71) is fixedly installed on the frame plate body (1). A T-shaped screw (73) is threaded through the side plate (72). A trapezoidal extrusion block (74) is movably installed on the left end of the T-shaped screw (73). The bottom of the trapezoidal extrusion block (74) is slidably installed on the fixed seat (71). A trapezoidal block (75) is attached to the front and rear sides of the trapezoidal extrusion block (74). A fixed rod (76) is fixedly installed on the opposite side of the trapezoidal block (75). A movable plate (77) is fixedly installed on the opposite end of the fixed rod (76).
6. The lightweight rotating hook tail frame rotating sleeve according to claim 5, characterized in that: On the opposite side of the movable plate (77), a snap-fit block (78) is fixedly installed near the left side, and a snap-fit rod (79) is provided on the opposite side of the movable plate (77). A snap-fit interface is opened on the snap-fit rod (79) near the right side. The opposite side of the snap-fit block (78) is inserted into the inner cavity of the adjacent snap-fit interface, and the left end of the snap-fit rod (79) slides through and extends to the outside of the fixed plate (6), and is fixedly installed on the sliding plate (81).
7. The lightweight rotating hook tail frame rotating sleeve according to claim 5, characterized in that: On the opposite side of the movable plate (77), there are vertical plates (771), and the bottom of the vertical plates (771) are fixedly installed on the frame plate body (1). The vertical plates (771) and the adjacent movable plates (77) are elastically connected by two telescopic springs (772), and the telescopic springs (772) are arranged on the left and right.
Citation Information
Patent Citations
Rotating sleeve for rotating coupler yoke
CN217994024U