Limiting pressing block structure of skeleton semitrailer
By designing the limiting block structure of hollow limiting blocks and suspended components, the transmission pin shaft penetrates the limiting block and is fixed by the limiting head and limit bolts, the problem of easy disengagement of the transmission pin shaft is solved and the transmission pin is realized The stability of the shaft and the sustainability of the limiting effect improve the safety of container transportation.
Patent Information
- Application Number
- CN202421180683.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the limit block structure of the existing skeleton semi-trailer, the transmission pin shaft is prone to break away from the limit block, resulting in safety hazards of container dehelming.
A limiting block structure including hollow limiting blocks, suspended components and transmission pin shafts is designed. The transmission pin shaft runs through both sides of the limiting block and is fixed by limiting heads and limit bolts to replace the traditional Opening pin.
It effectively avoids the problem of the transmission pin shaft falling off during long-term vibration, ensures the stability of the transmission pin shaft and the sustainability of the limiting effect, and improves the safety of container transportation.
Smart Images
Figure CN222496189U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of semi-trailers, in particular to a limiting pressing block structure of a skeleton semi-trailer. Background Art
[0002] Skeleton semi-trailer is a kind of transportation tool often used in the transportation of containers in ports. A 40-foot skeleton semi-trailer can not only transport two 20-foot containers or one 40-foot container, but also generally set up four limit block structures, with two limit block structures as a group and arranged in parallel in front, and two limit block structures as a group and arranged in parallel, forming a 20-foot space between the two groups of limit block structures. When the skeleton semi-trailer is loaded with two 20-foot containers, one of the 20-foot containers is placed between the two groups of limit block structures, and the limit block structure restricts the forward and backward movement of the container. When the skeleton semi-trailer is loaded with a 40-foot container, the bottom surface of the 40-foot container will press on the four limit block structures, and the four limit block structures will retreat to the bottom of the loading surface, so as not to affect the loading and transportation of the 40-foot container. After unloading, the gravity effect on the limit block structure is eliminated, and the limit block structure is reset under the action of the spring.
[0003] However, the existing limit pressure block structure has certain safety hazards. The transmission pin shaft in the suspension component is installed laterally on the limit pressure block, and the transmission pin shaft is restricted from detaching from the limit pressure block by the cotter pin. However, during operation, the transmission pin shaft will rotate on its own. After a certain period of time, the cotter pin will easily fall off, causing the transmission pin shaft to fall off as well. There is no way to limit the container, which will cause the container to fall off.
[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content
[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a limit pressure block structure for a skeleton semi-trailer, aiming to solve the technical problem that the transmission pin shaft is easy to separate from the limit pressure block.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A limiting pressure block structure for a skeleton semi-trailer comprises a limiting pressure block swingably arranged on the skeleton semi-trailer, the bottom of the limiting pressure block is a hollow structure and is supported by a suspension component, the suspension component comprises a support fixed on the skeleton semi-trailer, a support tube that moves up and down relative to the support, a spring sleeved on the support tube, and a transmission pin fixed on the top of the support tube, the spring provides a suspension supporting force for the support tube and the transmission pin, the transmission pin passes through both sides of the limiting pressure block, one end of the transmission pin is provided with a limiting head, and the other end is provided with a limiting bolt, and the limiting bolt is fixed to the transmission pin through a gasket and a locking nut.
[0008] As a further improvement of the above technical solution, two limiting rings are sleeved on the transmission pin shaft, and the support tube is restricted between the two limiting rings.
[0009] As a further improvement of the above technical solution, a positioning wing plate protruding outward is provided on one side surface of the limiting pressure block, a first socket is formed on the positioning wing plate, a second socket coaxial with the first socket is formed at the end of the transmission pin shaft away from the limiting head, and the limiting bolt passes through the first socket and the second socket in sequence.
[0010] As a further improvement of the above technical solution, the upper end of the support tube is sleeved with a first limiting ring, and the lower end is fixedly provided with a second limiting ring. The top end of the spring acts upward on the first limiting ring. The first limiting ring is close to the transmission pin and is located below the transmission pin, and the bottom end acts on the top surface of the support. The second limiting ring is located in the support and limits the support tube from detaching from the support.
[0011] As a further improvement of the above technical solution, an isolation and anti-slip structure is provided between the first limiting ring and the transmission pin shaft.
[0012] As a further improvement of the above technical solution, the isolation and anti-detachment structure includes a latch penetrating the support tube and a cotter pin for limiting the latch from detaching from the support tube.
[0013] As a further improvement of the above technical solution, the support is a channel steel, which is placed downward, and a gasket in contact with the second limiting ring is provided on the inner end surface of the channel steel.
[0014] As a further improvement of the above technical solution, the limiting pressure block includes an outer plate, two side plates respectively welded on both sides of the outer plate, a rib plate welded inside the side plate, and a rotating shaft welded at the tail of the side plate and the outer plate, the two side plates are provided with through holes for the transmission pin shaft to pass through, and the skeleton semi-trailer is provided with an adapter, and the rotating shaft is rotatably connected to the adapter.
[0015] Beneficial effects of the utility model: Compared with the prior art, the transmission pin shaft in the limit pressure block structure provided by the utility model not only passes through both sides of the limit pressure block, but is also equipped with a limit head at one end to axially position the transmission pin shaft; a limit bolt is fixed at the other end through a gasket and a lock nut, replacing the traditional cotter pin. Such a design avoids the problem of the cotter pin falling off in long-term vibration, because the lock nut can effectively lock the limit bolt, ensure the stability of the transmission pin shaft, and keep its position unchanged even in a long-term, high-frequency vibration environment, and continue to play a limiting role. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The three-dimensional structure of the limiting pressure block provided by the utility model Figure 1 .
[0017] Figure 2 The three-dimensional structure of the limiting pressure block provided by the utility model Figure 2 .
[0018] Figure 3 It is a schematic diagram of the structure of the limiting pressure block.
[0019] Figure 4 This is the assembly diagram of the spring installed on the support tube.
[0020] Figure 5 It is a schematic diagram of the installation of the limit sleeve, limit bolt, gasket and anti-loosening nut on the transmission pin shaft.
[0021] Explanation of the main component symbols: 1-limiting block, 11-outer plate, 12-side plate, 13-rib plate, 14-rotating shaft, 15-perforation, 2-suspension assembly, 21-support, 211-washer, 22-support tube, 23-spring, 24-transmission pin, 241-limiting head, 26-limiting sleeve, 27-limiting bolt, 28-gasket, 29-anti-loosening nut, 3-positioning wing plate, 41-first limiting ring, 42-second limiting ring, 43-isolation and anti-slip structure, 431-pin, 432-opening pin, 5-adapter. DETAILED DESCRIPTION
[0022] The utility model provides a limit block structure for a skeleton semi-trailer. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.
[0023] See also Figure 1-Figure 5The utility model provides a limit pressure block structure of a skeleton semi-trailer, comprising a limit pressure block 1 swingably arranged on the skeleton semi-trailer, the bottom of the limit pressure block 1 is a hollow structure and is supported by a suspension component 2, the suspension component 2 comprises a support 21 fixed on the skeleton semi-trailer, a support tube 22 that moves up and down relative to the support 21, a spring 23 sleeved on the support tube 22, and a transmission pin 24 inserted and fixed on the top of the support tube 22, the spring 23 provides a suspension support force for the support tube 22 and the transmission pin 24, the transmission pin 24 runs through both sides of the limit pressure block 1, one end of the transmission pin 24 is provided with a limit head 241, the limit head 241 and the transmission pin 24 are integrally formed, and the other end is provided with a limit bolt 27, and the limit bolt 27 is fixed to the transmission pin 24 through a gasket 28 and a lock nut 29.
[0024] In fact, four limit block structures are arranged on the skeleton semi-trailer, with two limit block structures arranged in parallel in front as a group, and two limit block structures arranged in parallel as a group, forming a 20-foot space between the two groups of limit block structures. When the skeleton semi-trailer is loaded with two 20-foot containers, one of the 20-foot containers is placed between the two groups of limit block structures, and the limit block structure restricts the forward and backward movement of the container. When the skeleton semi-trailer is loaded with a 40-foot container, the bottom surface of the 40-foot container will press on the four limit block structures, and the four limit block structures will retreat below the loading surface, thereby not affecting the loading and transportation of the 40-foot container. After unloading, the gravity effect on the limit block structure is eliminated, and the limit block structure is reset under the action of the spring 23.
[0025] Compared with the prior art, the transmission pin 24 in the limiting pressure block structure provided by the utility model not only passes through both sides of the limiting pressure block 1, but is also equipped with a limiting head 241 at one end to axially position the transmission pin 24; a limiting bolt 27 is fixed at the other end through a gasket 28 and a locking nut 29, replacing the traditional cotter pin 432. Such a design avoids the problem of the cotter pin 432 falling off in long-term vibration, because the locking nut 29 can effectively lock the limiting bolt 27, ensuring the stability of the transmission pin 24, and even in a long-term, high-frequency vibration environment, it can keep its position unchanged and continue to play a limiting role.
[0026] Specifically, two limiting sleeves 26 are sleeved on the driving pin shaft 24, and the support tube 22 is limited between the two limiting sleeves 26. By setting in this way, the center position of the support tube 22 can be more accurately controlled to prevent the support tube 22 from excessively deflecting when moving up and down. This not only enhances the stability of the entire limiting structure, but also improves the accuracy of the limiting pressure block 1 in positioning containers of different sizes.
[0027] Furthermore, a positioning wing plate 3 protruding outward is provided on one side of the limiting pressure block 1, a first plug hole is provided on the positioning wing plate 3, a second plug hole coaxial with the first plug hole is provided at the end of the transmission pin shaft 24 away from the limiting head 241, and the limiting bolt 27 passes through the first plug hole and the second plug hole in sequence. In practice, the positioning wing plate 3 is welded obliquely on the side of the limiting pressure block 1, and even if the anti-loosening nut 29 falls off due to age, the limiting bolt 27 is also stuck on the positioning wing plate 3. In the case where the limiting bolt 27 does not fall off, the transmission pin shaft 24 will not fall off, thereby adding an extra layer of safety protection and providing double insurance for the transportation safety of the container.
[0028] Furthermore, the upper end of the support tube 22 is sleeved with a first limiting ring 41, and the lower end is fixed with a second limiting ring 42. The top end of the spring 23 acts on the first limiting ring 41 upwards. The first limiting ring 41 is close to the transmission pin 24 and is located below the transmission pin 24. The bottom end acts on the top surface of the support 21. The second limiting ring 42 is located in the support 21 and limits the support tube 22 from being separated from the support 21. When the limiting pressure block 1 is pressed down, the transmission pin 24 on the limiting pressure block 1 drives the support tube 22 to move downward, so that the first limiting ring 41 of the support tube 22 overcomes the elastic force of the spring 23 to compress the spring 23; when the pressure on the limiting pressure block 1 is cancelled, the spring 23 is restored to release the elastic force, driving the support tube 22, the transmission pin 24 and the limiting pressure block 1 to rise and restore. At this time, the second limiting ring 42 limits the upward movement range of the support tube 22, effectively preventing the support tube 22 from accidentally falling out under extreme impact or long-term use, and enhancing the stability and reliability of the entire suspension system.
[0029] In this embodiment, in order to prevent the first limit block from directly contacting the transmission pin shaft 24 and causing wear, the service life of the components is extended, and the need for frequent maintenance and replacement due to wear is reduced, thereby reducing long-term maintenance costs. An isolation and anti-slip structure 43 is provided between the first limit ring 41 and the transmission pin shaft 24. The isolation and anti-slip structure 43 includes a latch 431 that passes through the support tube 22 and a cotter pin 432 that is used to limit the latch 431 from detaching from the support tube 22. The latch 431 limits the movement range of the first limit ring 41 to prevent the first limit ring 41 and the spring 23 from detaching from the support tube 22.
[0030] In this embodiment, the support 21 is a channel steel, which is placed downward. A circular through hole is provided on the outer end surface of the channel steel, and a washer 211 in contact with the second limiting ring 42 is provided on the inner end surface of the channel steel. The washer 211 is concentric with the circular through hole. The washer 211 plays an anti-wear role to prevent the second limiting ring 42 from rigidly contacting the channel steel.
[0031] Specifically, the limiting pressure block 1 includes an outer plate 11, two side plates 12 respectively welded on both sides of the outer plate 11, a rib plate 13 welded inside the side plate 12, and a rotating shaft 14 welded at the tail of the side plate 12 and the outer plate 11. The two side plates 12 are provided with a through hole 15 for the transmission pin shaft 24 to pass through. The skeleton semi-trailer is provided with an adapter seat 5, and the rotating shaft 14 is rotatably connected to the adapter seat 5. The limiting pressure block 1 forms a more solid structural frame through the combined design of the outer plate 11, the side plate 12, the rib plate 13 and the rotating shaft 14. The addition of the rib plate 13 significantly improves the overall rigidity of the pressure block, and the welding structure of the side plate 12 and the outer plate 11 and the rotating connection design of the rotating shaft 14 make the structure more stable, can withstand greater load impact, and improve the stability and durability under complex transportation conditions. It should be noted that the end of the limiting pressure block 1 away from the adapter seat 5 (i.e. Figure 1 and Figure 2 A in the figure) is used to contact with the container for limiting the position.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0034] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.
Claims
1. A limiting block structure for a skeleton semi-trailer, characterized in that: It includes a limiting pressure block swingably arranged on the skeleton semi-trailer, the bottom of the limiting pressure block is a hollow structure and is supported by a suspension component, the suspension component includes a support fixed on the skeleton semi-trailer, a support tube moving up and down relative to the support, a spring sleeved on the support tube, and a transmission pin fixed on the top of the support tube, the spring provides a suspension supporting force for the support tube and the transmission pin, the transmission pin passes through both sides of the limiting pressure block, one end of the transmission pin is provided with a limiting head, and the other end is provided with a limiting bolt, and the limiting bolt is fixed to the transmission pin through a gasket and a lock nut.
2. The limiting pressure block structure of the skeleton semi-trailer according to claim 1 is characterized in that: The transmission pin shaft is sleeved with two limiting sleeves, and the support tube is limited between the two limiting sleeves.
3. The limiting pressure block structure of the skeleton semi-trailer according to claim 1 is characterized in that: A positioning wing plate protruding outward is provided on one side surface of the limiting pressure block, a first socket is opened on the positioning wing plate, a second socket coaxial with the first socket is opened at the end of the transmission pin shaft away from the limiting head, and the limiting bolt passes through the first socket and the second socket in sequence.
4. The limiting pressure block structure of the skeleton semi-trailer according to claim 3 is characterized in that: The upper end of the support tube is sleeved with a first limiting ring, and the lower end is fixedly provided with a second limiting ring. The top end of the spring acts upward on the first limiting ring. The first limiting ring is close to the transmission pin and is located below the transmission pin, and the bottom end acts on the top surface of the support. The second limiting ring is located in the support and limits the support tube from detaching from the support.
5. The limiting pressure block structure of the skeleton semi-trailer according to claim 4 is characterized in that: An isolation and anti-slip structure is provided between the first limiting ring and the transmission pin shaft.
6. The limiting pressure block structure of the skeleton semi-trailer according to claim 5 is characterized in that: The isolation and anti-detachment structure comprises a latch penetrating the support tube and a split pin for limiting the latch from detaching from the support tube.
7. The limiting pressure block structure of the skeleton semi-trailer according to claim 4 is characterized in that: The support is a channel steel, which is placed downwards, and a washer in contact with the second limiting ring is arranged on the inner end surface of the channel steel.
8. The limiting pressure block structure of the skeleton semi-trailer according to any one of claims 1 to 7, characterized in that: The limiting pressure block includes an outer plate, two side plates respectively welded on both sides of the outer plate, a rib plate welded inside the side plate, and a rotating shaft welded at the tail of the side plate and the outer plate. The two side plates are provided with through holes for the transmission pin shaft to pass through. The skeleton semi-trailer is provided with an adapter seat, and the rotating shaft is rotatably connected to the adapter seat.