CN222682405U

CN222682405U - Locking mechanism of concave bottom frame and piggyback transport vehicle

Info

Publication number: CN222682405U
Application number: CN202420980977.3U
Authority: CN
Inventors: 袁博; 吴振国; 陈诚; 周凌云; 吴云云; 李想; 许植深; 于雪峤
Original assignee: Beijing China Railway Technology Co ltd; CRRC Qiqihar Rolling Stock Co Ltd; China Academy of Railway Sciences Corp Ltd CARS; China State Railway Group Co Ltd; Transportation and Economics Research Institute of CARS
Current assignee: Beijing China Railway Technology Co ltd; CRRC Qiqihar Rolling Stock Co Ltd; China Academy of Railway Sciences Corp Ltd CARS; China State Railway Group Co Ltd; Transportation and Economics Research Institute of CARS
Priority date: 2024-05-08
Filing date: 2024-05-08
Publication date: 2025-03-28
Anticipated expiration: 2034-05-08

Abstract

The application relates to a locking mechanism of a concave underframe and a piggyback transport vehicle, wherein the piggyback transport vehicle comprises the concave underframe, the locking mechanism of the concave underframe comprises a driving part and two locking parts, the locking parts comprise lock hooks, the driving part comprises a driving shaft, screw rods are respectively arranged at the two side ends of the driving shaft, screw threads of the two screw rods are opposite in direction and are respectively connected with nuts in a threaded manner, the two nuts are respectively connected with the two locking parts in a corresponding manner, and the nuts can move along the axial direction of the driving shaft and drive the lock hooks to lock or unlock the concave underframe. The locking mechanism of the concave underframe can conveniently and rapidly lock and unlock the concave underframe, so that the stability of the concave underframe in the transportation process is ensured, and further, the safety of goods in a vehicle and the running safety are ensured.

Description

Locking mechanism of concave bottom frame and piggyback transport vehicle

Technical Field

The application relates to the technical field of railway freight, in particular to a locking mechanism of a concave bottom frame and a piggyback transport vehicle.

Background

The concave underframe of the piggyback transport vehicle can take the middle bogie core disc as a center, and the lifting and rotating functions can be automatically completed through the self mechanism, so that the concave underframe can adapt to the self-lifting operation requirement of the semitrailer after rotating.

But the vehicle is in the transportation, and the concave underframe needs to keep stable, avoids taking place horizontal rotation and vertical, vertical removal to guarantee interior goods safety of car and driving safety, consequently, need lock the concave underframe through locking mechanism, when concave underframe needs to be separated with the automobile body, this locking mechanism can realize the unblock.

How to provide a locking mechanism of a concave chassis, which can conveniently and rapidly realize locking and unlocking of the concave chassis, is a technical problem to be solved by those skilled in the art.

Disclosure of utility model

The application aims to provide a locking mechanism of a concave underframe and a piggyback transport vehicle, which can conveniently and rapidly realize locking and unlocking of the concave underframe, ensure the stability of the concave underframe in the transportation process, and further ensure the safety of goods in the vehicle and the driving safety.

In order to solve the technical problems, the application provides a locking mechanism of a concave underframe, which comprises a driving part and two locking parts, wherein the locking parts comprise lock hooks, the driving part comprises a driving shaft, screw rods are respectively arranged at the two side ends of the driving shaft, screw threads of the two screw rods are opposite in direction and are respectively connected with nuts in a threaded manner, the two nuts are respectively and correspondingly connected with the two locking parts, and the nuts can move along the axial direction of the driving shaft and drive the lock hooks to lock or unlock the concave underframe.

Optionally, the vehicle further comprises a first mounting seat, the first mounting seat is fixed with the vehicle body, the driving shaft penetrates through the first mounting seat and can rotate relative to the first mounting seat, and the end part of the driving shaft extends out of the vehicle body.

Optionally, the driving shaft is further provided with two limiting blocks, the two limiting blocks are located at the inner sides of the two first installation seats, or the two limiting blocks are located at the outer sides of the two first installation seats respectively, and the driving shaft is limited to move along the axial direction relative to the first installation seats through the limiting blocks and the first installation seats.

Optionally, two ends of the driving shaft are respectively provided with a hand wheel.

Optionally, the locking part further comprises a locking rod and a second mounting seat, the locking hook is fixedly arranged at one end of the locking rod, the second mounting seat is fixed with the vehicle body, one end, away from the locking hook, of the locking rod is connected with the nut, the locking rod is hinged with the second mounting seat, and the hinge point is located between two ends of the locking rod.

Optionally, the device further comprises a connecting rod assembly connected between the lock rod and the nut, the connecting rod assembly comprises a first connecting rod, a corner connecting rod and a second connecting rod which are sequentially hinged, one end of the first connecting rod, which is far away from the corner connecting rod, is hinged with the nut, one end of the second connecting rod, which is far away from the corner connecting rod, is hinged with the lock rod, a third mounting seat is further hinged in the middle of the first connecting rod, and the third mounting seat is fixed with the vehicle body.

Optionally, the driving shaft comprises a connecting rod connected between the two screw rods, and the connecting rod is detachably connected with the screw rods.

Optionally, the connecting rod is tubular structure, tubular structure's tip cover is located outside the lead screw and with the lead screw passes through bolted connection, the bolt is followed the radial direction setting of lead screw.

The application also provides a piggyback transport vehicle, which comprises an end underframe, a concave underframe and the locking mechanism, wherein a driving part of the locking mechanism is arranged on the end underframe, a lock hole is arranged on the outer side wall of the concave underframe, and a lock hook of the locking mechanism can be matched with and separated from the lock hole.

Optionally, the end underframe and the concave underframe are also respectively provided with a traction hook which is mutually matched, and the traction hook arranged on the concave underframe is provided with the lock hole;

The locking mechanism is arranged below the floor of the end underframe, and the locking part of the locking mechanism and the end part of the driving shaft extend out of the side beams at two sides of the end underframe.

The locking mechanism of the concave bottom frame and the piggyback transport vehicle provided by the application have the following excellent technical effects:

The outer side wall of concave chassis is provided with the lockhole, and the nut can drive the in-process that the locking part moved along the lead screw and make latch hook and lockhole cooperation or break away from, and when latch hook and lockhole cooperation, this locking mechanism is in the locking state, can play the effect of mechanical anticreep to concave chassis for keep stable between concave chassis and the tip chassis, when latch hook and latch hook break away from, this locking mechanism is in the unblock state, and concave chassis can take place to remove and rotate for the tip chassis.

The screw threads of the two screw rods are opposite in direction, so that when the driving shaft rotates, the two nuts can respectively approach to or separate from each other along the axial direction of the screw rods (i.e. the driving shaft). At one side of the car body of the piggyback transport car, through rotating the driving shaft, the two screw rods can synchronously rotate, the two nuts move along the axial direction of the screw rods, and meanwhile, the locking part is driven to act, so that the two locking hooks can be respectively matched with or separated from corresponding locking holes, and locking and unlocking of the concave underframe are realized.

And through rotating the drive shaft to locking or unblock state after, the screw thread cooperation between nut and the lead screw can play spacing effect for the position stability of latch hook is good, need not to set up locking part in addition, can realize in the transportation, avoids because the automobile body takes place to shake the circumstances that leads to latch hook and lockhole to break away from, that is to say, the locking mechanism of concave chassis that this embodiment provided has the auto-lock function, when guaranteeing locking and unblock state stability, simplifies overall structure.

Drawings

Figure 1 is a partial top view of a piggyback carrier provided by an embodiment of the present application;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is a schematic view of a locking mechanism of a concave chassis according to an embodiment of the present application;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic view of the structure of the piggyback vehicle with the latch mechanism in the latched state;

Fig. 8 is a schematic view of the structure of the piggyback vehicle with the locking mechanism in an unlocked state.

In fig. 1 to 8, reference numerals are explained as follows:

100 locking mechanism, 200 concave underframe, 201 keyhole, 300 end underframe and 400 traction hook;

1 driving part, 11 screw rods, 12 nuts, 13 connecting rods, 14 bolts, 15 limiting blocks, 16 handwheels and 17 driving shafts;

the locking part, the 21 locking hook, the 22 locking rod and the 23 second mounting seat;

a 3-link assembly, a 31-first link, a 32-corner link, 33 second connecting rod, 34 third mounting seat;

4 first mount pad.

Detailed Description

In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a locking mechanism of a concave chassis and a piggyback transport vehicle, wherein, as shown in fig. 1 and 2, a vehicle body of the piggyback transport vehicle comprises a locking mechanism 100 of the concave chassis, a concave chassis 200 and an end chassis 300, the end chassis 300 and the concave chassis 200 are respectively provided with a traction hook 400 which are mutually matched, and the traction hooks 400 are matched to realize longitudinal traction, and the locking mechanism 100 is arranged on the end chassis 300 and can be matched with the concave chassis 200 to realize locking and unlocking of the concave chassis 200. The concave underframe 200 is used for carrying goods, when the concave underframe 200 needs to move and rotate relative to the end underframe 300, the locking mechanism 100 is in an unlocking state, and when the concave underframe 200 and the end underframe 300 do not need to relatively move or rotate in the transportation process, the locking mechanism 100 is in a locking state, so that the position stability of the concave underframe 200 is ensured, and the safety of goods in a vehicle and the driving safety are ensured.

As shown in fig. 3 to 5, the locking mechanism 100 of the female chassis 200 includes a driving part 1 and two locking parts 2, each locking part 2 includes a locking hook 21, the driving part 1 includes a driving shaft 17, both ends of the driving shaft 17 are respectively provided with screw rods 11, each screw rod 11 is screwed with a nut 12, the two nuts 12 are respectively disposed corresponding to the two locking parts 2, and the screw directions of the two screw rods 11 are opposite, so that when the driving shaft 17 rotates, the two nuts 12 can be respectively moved toward or away from each other in the axial direction of the screw rod 11 (i.e., the driving shaft 17).

The outer side wall of the concave underframe 200 is provided with a lock hole 201, and in the process that the nut 12 moves along the screw rod 11, the locking part 2 can be driven to enable the lock hook 21 to be matched with or separated from the lock hole 201, when the lock hook 21 is matched with the lock hole 201, as shown in fig. 7, the locking mechanism 100 is in a locking state, and can play a role in preventing mechanical separation on the concave underframe 200, so that stability is kept between the concave underframe 200 and the end underframe 300, and when the lock hook 21 is separated from the lock hook 21, as shown in fig. 8, the locking mechanism 100 is in an unlocking state, and the concave underframe 200 can move and rotate relative to the end underframe 300.

As shown in fig. 4 and 5, the two lock portions 2 and the two nuts 12 are provided symmetrically with respect to a longitudinal center radial cross section P of the drive shaft 17, and in the mounted state, the center radial cross section P of the drive shaft 17 is coplanar with a lateral center plane of the vehicle body.

On one side of the body of the piggyback carrier, by rotating the driving shaft 17, the two screw rods 11 can be synchronously rotated, the two nuts 12 can be moved along the axial direction of the screw rods 11, and meanwhile, the locking part 2 is driven to act, so that the two locking hooks 21 can be respectively matched with or separated from the corresponding locking holes 201, and the locking and unlocking of the concave underframe 200 are realized.

And, through rotating drive shaft 17 to locking or unblock state after, the screw thread cooperation between nut 12 and the lead screw 11 can play spacing effect for the position stability of latch hook 21 is good, need not to set up in addition and locks the part, can realize in the transportation, avoids because the automobile body takes place vibrations and leads to the circumstances that latch hook 21 breaks away from lockhole 201, that is to say, the locking mechanism 100 of concave chassis 200 that this embodiment provided has the auto-lock function, when guaranteeing locking and unblock state stability, simplifies overall structure.

As shown in fig. 3, the locking hole 201 is provided on the traction hook 400 of the concave chassis 200, and as shown in fig. 7 and 8, the locking mechanism 100 is provided under the floor of the end chassis 300, and both the locking portion 2 and the end of the driving shaft 17 extend out of the side beams on both sides of the end chassis 300, so that the driving shaft 17 can be rotated conveniently, and the locking hook 21 of the locking portion 2 can be engaged with and disengaged from the locking hole 201 from the outside.

In addition, the locking mechanism 100 is arranged below the floor of the end chassis 300, so that the influence on the space above the floor of the end chassis 300 can be avoided, the locking mechanism 100 can be protected, the situation that the locking mechanism is damaged by collision of heavy objects or rusted due to contact with rainwater and the like is avoided, and the service life of the locking mechanism 100 is ensured.

As shown in fig. 4 to 6, a hand wheel 16 is connected to an end of the drive shaft 17, and the drive shaft 17 is rotated by the hand wheel 16. Of course, in this embodiment, the end portion of the driving shaft 17 may be set to be in a hexagonal structure, specifically, an inner hexagonal structure may be also be an outer hexagonal structure, and the driving shaft 17 may be rotated by matching with the hexagonal structure through an operation wrench, and the hand wheel 16 may be set to improve the operation convenience.

As shown in fig. 5 and 6, the locking mechanism 100 further includes a first mounting seat 4, where the first mounting seat 4 is fixed to the vehicle body, specifically to the end chassis 300, the driving shaft 17 can pass through the first mounting seat 4 and can rotate relative to the first mounting seat 4, and the end of the driving shaft 17 extends out of the vehicle body, and the first mounting seat 4 can provide support for the driving shaft 17, so as to ensure the stability of the locking mechanism 100 mounted on the vehicle body. Of course, the side beam of the end chassis 300 may be provided with a mounting hole, the driving shaft 17 may pass through the mounting hole and provide support through the wall of the mounting hole, and the first mounting seat 4 may be provided to reduce the strength requirement of the side wall of the mounting hole while ensuring the mounting stability of the locking mechanism 100.

Specifically, the first mount 4 may be of an integral structure and provided with a mounting hole through which the driving shaft 17 passes, or may be of a split structure and include a first member and a second member, which are fixed to and enclosed by the end chassis 300, respectively, to form a mounting hole, which is not particularly limited herein.

As shown in fig. 5 and 6, the driving shaft 17 is fixedly provided with two limiting blocks 15, the limiting blocks 15 can be specifically fixed with the driving shaft 17 through welding, the two limiting blocks 15 are respectively located at the outer sides of the two first mounting seats 4, and the driving shaft 17 is limited to move along the axial direction relative to the first mounting seats 4 through the abutting action between the limiting blocks 15 and the first mounting seats 4, so that the position stability of the locking mechanism 100 relative to the vehicle body in the transverse direction of the vehicle body is ensured.

Of course, two limiting blocks 15 may be located between the first mounting seats 4 and disposed near one side of the first mounting seats 4, and the limiting blocks 15 and the first mounting seats 4 may also limit the position of the locking mechanism 100 in the transverse direction of the vehicle body, so as to ensure the stability of the position of the locking mechanism 100 in the transverse direction of the vehicle body.

As shown in fig. 5, the locking portion 2 further includes a locking rod 22 and a second mounting seat 23, the locking hook 21 is fixedly disposed at one end of the locking rod 22, one end of the locking rod 22 away from the locking hook 21 is connected with the nut 12 through the connecting rod assembly 3, the second mounting seat 23 is fixed with the end chassis 300, and the second mounting seat 23 is hinged with the locking rod 22, the hinge point is located at a middle position between two ends of the locking rod 22, and specifically may be a middle position in a length direction or any position between two ends. When the nut 12 moves and drives one end of the lock lever 22 to move through the connecting rod assembly 3, the lock lever 22 can rotate around the hinge point and drive the lock hook 21 to move to be engaged with or disengaged from the lock hole 201.

As shown in fig. 5, the hinge point is located at one side of the lock lever 22 near the link assembly 3, that is, the distance between the hinge point and the lock hook 21 is larger than the distance between the hinge point and the link assembly 3, so that the nut 12 can move a smaller distance to drive the lock hook 21 to move a larger distance through the link assembly 3, and the manual operation is simplified in the process of locking and unlocking the concave chassis 200.

In this embodiment, the latch hook 21 and the latch lever 22 may be of an integral structure, or may be of a split structure and may be fixed by welding, fastening, or the like.

Of course, in the present embodiment, the nut 12 may be directly connected to the lock rod 22 of the locking portion 2, and the arrangement of the link assembly 3 may improve the flexibility of installation of the driving portion 1, so that a certain distance exists between the axis of the driving shaft 17 and the location of the lock hook, and interference of the arrangement of the driving portion 1 to the bogie disposed below the end chassis 300 is avoided.

In this embodiment, the specific structure of the link assembly 3 is not limited, and as shown in fig. 6, the link assembly 3 includes a first link 31, a corner link 32 and a second link 33 that are sequentially hinged, wherein, one end of the first link 31 away from the corner link 32 is hinged with the nut 12, one end of the second link 33 away from the corner link 32 is hinged with the lock lever 22, and the middle part of the first link 31 is also hinged with a third mounting seat 34, and the third mounting seat 34 is fixed with the end chassis 300. The corner connecting rod 32 is connected between the first connecting rod 31 and the second connecting rod 33, and drives the second connecting rod 33 to move through the first connecting rod 31, and when the nut 12 moves, the nut can act on the first connecting rod 31 to enable the first connecting rod 31 to rotate around the third mounting seat 34, and drives the second connecting rod 33 to move through the corner connecting rod 32, and then drives the lock rod 22 to rotate, so that locking and unlocking are achieved.

The axes of the first link 31 and the second link 33 are not on the same plane, and force transmission can be realized through the corner link 32, so that the overall structure is simplified, and of course, in this embodiment, the corner link 32 and the first link may be set as an integral structure, or the corner link 32 and the second link 33 may be set as an integral structure, and when the first link 31, the second link 33 and the corner link 32 are respectively set as a split structure, the length of the corner link 32 is smaller, so that deformation at the corner after long-term use can be avoided, and the service life is prolonged.

Or in this embodiment, the connecting rod assembly 3 may be configured as a rigid connection member, and the arrangement of the connecting rod assembly 3 can avoid deformation after long-term use, ensure that the latch hook 21 can be accurately engaged with and disengaged from the latch hole 201, and prolong the service life of the locking mechanism 100.

As shown in fig. 5 to 8, the driving shaft 17 further includes a connection rod 13 connected between the two screw rods 11, the connection rod 13 is connected with the connection rod 13 between the screw rods 11, and the outer surface of the connection rod 13 is not provided with threads, so that the processing process can be simplified and the cost can be reduced.

The connecting rod 13 can be dismantled with the lead screw 11 and be connected, so set up, convenient whole equipment to, the length of connecting rod 13 can be according to the actual width of automobile body etc. the condition setting can, make things convenient for the change of connecting rod 13, simultaneously, when one of them lead screw 11 is damaged, conveniently changes it alone, convenient operation and economic nature are good.

Further, the connecting rod 13 is of a tubular structure, the purpose of light weight can be achieved, the end portion of the tubular structure is sleeved outside the screw rod 11 and is connected through the bolt 14, the bolt 14 is arranged along the radial direction of the screw rod 11 and penetrates through the connecting rod 13 and the screw rod 11, or coaxial transmission can be achieved between the connecting rod 13 and the screw rod 11 through key connection, and the purpose is not particularly limited.

Or the embodiment is general, can also realize the connection between connecting rod 13 and lead screw 11 through setting up the sleeve pipe, sleeve pipe's one end cup joints and fixes with lead screw 11, sleeve pipe's the other end cup joints and fixes with connecting rod 13 can, and when setting up connecting rod 13 to tubular structure, can simplify overall structure to can alleviate overall weight.

Here, the hinge connection between the links and the mount may be achieved by using a fastener connection or through a pin connection, which is not particularly limited herein.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.

Claims

1. A locking mechanism of a concave chassis, characterized by comprising a driving part (1) and two locking parts (2), wherein the locking parts (2) comprise locking hooks (21);

The driving part (1) comprises a driving shaft (17), screw rods (11) are respectively arranged at two side end parts of the driving shaft (17), screw threads of the two screw rods (11) are opposite in direction and are respectively connected with nuts (12) in a threaded mode, the two nuts (12) are respectively connected with the two locking parts (2) in a corresponding mode, and the nuts (12) can move along the axial direction of the driving shaft (17) and drive the locking hooks (21) to lock or unlock the concave underframe (200).

2. The locking mechanism of a female chassis according to claim 1, further comprising a first mount (4), the first mount (4) being fixed to a vehicle body, the drive shaft (17) passing through the first mount (4) and being rotatable relative to the first mount (4), an end of the drive shaft (17) protruding outside the vehicle body.

3. The locking mechanism of a concave chassis according to claim 2, wherein the driving shaft (17) is further provided with two limiting blocks (15), the two limiting blocks (15) are located at the inner sides of the two first mounting seats (4), or the two limiting blocks (15) are respectively located at the outer sides of the two first mounting seats (4), and the driving shaft (17) is limited to move axially relative to the first mounting seats (4) through the limiting blocks (15) and the first mounting seats (4).

4. A locking mechanism for a recess bottom according to claim 2, characterized in that the drive shaft (17) is provided with hand wheels (16) at each end.

5. The locking mechanism of a concave chassis according to claim 1, wherein the locking part (2) further comprises a locking rod (22) and a second mounting seat (23), the locking hook (21) is fixedly arranged at one end of the locking rod (22), the second mounting seat (23) is fixedly arranged with a vehicle body, one end of the locking rod (22) away from the locking hook (21) is connected with the nut (12), the locking rod (22) is hinged with the second mounting seat (23), and a hinging point is arranged between two ends of the locking rod (22).

6. The locking mechanism of a concave chassis according to claim 5, further comprising a link assembly (3) connected between the lock rod (22) and the nut (12), wherein the link assembly (3) comprises a first link (31), a corner link (32) and a second link (33) which are sequentially hinged, one end of the first link (31) away from the corner link (32) is hinged with the nut (12), one end of the second link (33) away from the corner link (32) is hinged with the lock rod (22), a third mounting seat (34) is further hinged at the middle part of the first link (31), and the third mounting seat (34) is fixed with the vehicle body.

7. A locking mechanism for a recess bottom according to any one of claims 1-6, characterized in that the drive shaft (17) comprises a connecting rod (13) connected between two screw rods (11), the connecting rod (13) being detachably connected with the screw rods (11).

8. The locking mechanism of a concave chassis according to claim 7, wherein the connecting rod (13) is of a tubular structure, an end of the tubular structure is sleeved outside the screw rod (11) and is connected with the screw rod (11) through a bolt (14), and the bolt (14) is arranged along the radial direction of the screw rod (11).

9. A piggyback vehicle, characterized by comprising an end chassis (300), a concave chassis (200) and a locking mechanism (100) according to any of claims 1-8, wherein a driving part (1) of the locking mechanism (100) is arranged on the end chassis (300), a lock hole (201) is arranged on the outer side wall of the concave chassis (200), and a lock hook (21) of the locking mechanism (100) can be matched with and separated from the lock hole (201).

10. The piggyback transport vehicle according to claim 9, characterized in that the end chassis (300) and the concave chassis (200) are further provided with mutually adapted towing hooks (400), respectively, the towing hooks (400) provided in the concave chassis (200) being provided with the locking holes (201);

The locking mechanism (100) is arranged below the floor of the end underframe (300), and the locking part (2) of the locking mechanism (100) and the end part of the driving shaft (17) extend out of the side beams at the two sides of the end underframe (300).