Container locking device for railway flat cars

Abstract

The application provides a container locking device for a railway flat car, which comprises an embedding seat, a telescopic connector, a swing locking piece and an elastic upper pushing piece, the embedding seat is arranged through the flat car in the up-down direction; the telescopic connector is arranged through the embedding seat in the axial direction and is in sliding cooperation with the embedding seat, the telescopic connector can be in plug-in cooperation with a plug-in groove, the telescopic connector is provided with a first installation cavity, a through cavity in communication with the first installation cavity is arranged on the peripheral wall of the telescopic connector, and the telescopic connector is locked through a first locking piece; the swing locking piece is rotationally connected in the through cavity, and the elastic upper pushing piece can vertically swing to abut on the inner peripheral wall of the locking groove; the elastic upper pushing piece is slidingly connected in the first installation cavity, the elastic upper pushing piece can move upward to push and swing the swing locking piece vertically, and the elastic upper pushing piece is locked through a second locking piece. The container locking device for the railway flat car can stably lock the container on the flat car, avoids the overturning of the container and eliminates the safety hidden danger.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of auxiliary equipment for container flat cars, and more particularly to a container locking device for railway flat cars. BACKGROUND

[0002] Railway flat car container transportation is a relatively fast freight transportation mode, mainly used for transporting steel, wood, automobiles, mechanical equipment and other large-volume or heavy goods.

[0003] With the continuous increase of the actual loading weight of railway flat car containers, the running speed of the vehicle is also gradually increased, and the inertial force and lateral impact force of the container are greatly increased when the vehicle runs and intersects.

[0004] In the prior art, the railway flat car is usually inserted into the slot on the bottom wall of the container by the plug-in type locking device, so as to limit the horizontal movement of the container relative to the railway flat car. If the vehicle intersects and the container is in an empty state, the container is prone to overturning and risks, which has certain safety hazards. SUMMARY

[0005] The container locking device for railway flat cars provided by the embodiments of the present application can stably lock the container on the railway flat car, avoid the risk of container overturning, and eliminate safety hazards.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a container locking device for railway flat cars, which comprises an embedded seat, a telescopic plug-in part, a swing locking part and an elastic top part. The embedded seat is arranged along the up-down direction through the flat car. The telescopic plug-in part is arranged axially through the embedded seat and is in sliding cooperation with the embedded seat. The upper end of the telescopic plug-in part can be elastically protruded from the top surface of the embedded seat to be inserted and cooperated with the slot. The lower part of the telescopic plug-in part is provided with an axially extending first installation cavity. The peripheral wall of the telescopic plug-in part is provided with a through cavity in communication with the first installation cavity. The telescopic plug-in part is locked with the embedded seat by a first locking part. The swing locking part is rotationally connected in the through cavity. The swing locking part can be vertically swung to protrude outward from the peripheral wall of the telescopic plug-in part and abut against the inner peripheral wall of the locking groove to lock the axial position of the telescopic plug-in part. The elastic top part is slidingly connected in the first installation cavity. The elastic top part can move upward to push the swing locking part to vertically swing. The elastic top part is locked with the telescopic plug-in part by a second locking part.

[0007] In a possible implementation, the embedded seat is provided with a second installation cavity penetrating in the axial direction, and the telescopic connector is slidingly connected in the second installation cavity. The telescopic connector includes a telescopic column and a first tension spring. The telescopic column is slidingly connected in the second installation cavity, and the first installation cavity and the penetrating cavity are both arranged on the telescopic column. The first tension spring is sleeved on the outer periphery of the telescopic column. One end of the first tension spring is connected to the outer peripheral wall of the telescopic column, and the other end is connected to the inner wall of the second installation cavity. The first tension spring can elastically pull up the telescopic column to make the upper end of the telescopic column in plug-in cooperation with the insertion slot.

[0008] In a possible implementation, the elastic upward top piece includes a top rod and a second tension spring. The top rod is slidingly connected in the first installation cavity. The upper end of the top rod is provided with a top pushing table protruding outward. The second tension spring is sleeved on the outer periphery of the top rod. One end of the second tension spring is connected to the outer peripheral wall of the top rod, and the other end is connected to the inner top wall of the first installation cavity. The second tension spring can pull up the top rod to make the top pushing table push the swing locking piece to vertically swing.

[0009] In some embodiments, the swing locking piece includes a rotating shaft, a swing rod, and a torsion spring. The rotating shaft is rotationally connected in the penetrating cavity, and the main shaft extends along the tangential direction of the telescopic connector. The swing rod is connected to the outer periphery of the rotating shaft. The swing rod can vertically swing under the pushing of the top pushing table to protrude outward from the outer peripheral wall of the telescopic connector and abut against the inner peripheral wall of the locking slot. The torsion spring is sleeved on the outer periphery of the rotating shaft. One end of the torsion spring is connected to the inner peripheral wall of the penetrating cavity, and the other end is connected to the swing rod. The torsion spring is used to drive the swing rod to swing back into the penetrating cavity.

[0010] In a possible implementation, the outer peripheral wall of the telescopic connector is provided with a first positioning slot extending in the radial direction. The first locking piece is slidingly connected to the bottom of the embedded seat and is used to be plugged into the first positioning slot to lock the axial position of the telescopic connector.

[0011] In some embodiments, the lower end of the elastic upward top piece is provided with a protruding table protruding outward. The second locking piece is arranged between the telescopic connector and the protruding table and is in abutting cooperation with the top surface of the protruding table and the lower end surface of the telescopic connector, respectively. The outer peripheral wall of the protruding table is provided with a second positioning slot in plug-in cooperation with the first locking piece. The first locking piece can be plugged into the second positioning slot to lock the positions of the telescopic connector and the elastic upward top piece.

[0012] In some embodiments, the first locking piece includes an elastic piece, a sliding block, and a plug block. The elastic piece is connected to the bottom of the embedded seat and extends horizontally towards the telescopic connector. The sliding block is connected to the extension end of the elastic piece and is slidingly connected to the bottom surface of the embedded seat along the radial direction of the telescopic connector. The plug block is connected to the side of the sliding block close to the telescopic connector and is used to be in plug-in cooperation with the first positioning slot or the second positioning slot.

[0013] In some embodiments, the second locking member is a U-shaped clip disposed between the telescopic connector and the boss, and the U-shaped clip is engaged with the lower outer periphery of the elastic upper push member.

[0014] In one possible implementation, there are two swing locking members, which are symmetrically arranged on both sides of the elastic upper member.

[0015] In one possible implementation, the mounting base is connected to the flatcar by bolts.

[0016] The container locking device for railway flatcars provided in this embodiment, compared with the prior art, releases the first locking member from locking the telescopic connector when it is necessary to release the telescopic connector. The second locking member continues to lock the elastic upper push member. After the telescopic connector is elastically inserted into the slot, the second locking member is released from locking the elastic upper push member. The elastic upper push member slides upward, driving the swing locking member to swing vertically to the outside of the telescopic connector to abut against the inner wall of the locking groove. The lateral tilting tendency of the container can be eliminated by the pressure of the swing locking member against the inner wall of the locking groove, avoiding the risk of container overturning and eliminating safety hazards. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front sectional view of the container locking device for railway flatcars provided in an embodiment of the present invention, showing its usage state.

[0019] Figure 2 A front sectional view of the unconnected container locking device for railway flatcars provided in an embodiment of the present invention;

[0020] Figure 3 This is a front sectional view of the container locking device for railway flatcars in the insertion state according to an embodiment of the present invention.

[0021] Figure 4 for Figure 3 A bottom view of the structure of the swing locking component.

[0022] The following are the labeling elements in the figure:

[0023] 1. Flatcar; 2. Container; 3. Slot; 4. Locking slot; 10. Mounting seat; 11. Second mounting cavity; 20. Telescopic connector; 21. First tension spring; 22. Telescopic column; 221. First positioning slot; 222. First mounting cavity; 223. Through cavity; 30. First locking element; 31. Elastic element; 32. Slider; 33. Insert block; 40. Elastic upper pusher; 41. Push rod; 42. Pushing platform; 43. Second tension spring; 50. Second locking element; 60. Bolt; 70. Swing locking element; 71. Rotating shaft; 72. Swing rod; 73. Torsion spring; 80. Boss; 81. Second positioning slot. Detailed Implementation

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0027] Please refer to the following: Figures 1 to 4The container locking device for railway flatcars provided by the present invention will now be described. The container locking device for railway flatcars includes a mounting base 10, a telescopic connector 20, a swing locking member 70, and an elastic upper support member 40. The mounting base 10 is disposed through the flatcar 1 in a vertical direction; the telescopic connector 20 is disposed axially through the mounting base 10 and slides with the mounting base 10. The upper end of the telescopic connector 20 can elastically protrude from the top surface of the mounting base 10 to engage with the slot 3. The lower part of the telescopic connector 20 is provided with an axially extending first mounting cavity 222, and the peripheral wall of the telescopic connector 20 is provided with a through-hole communicating with the first mounting cavity 222. Through cavity 223, telescopic connector 20 is locked to mounting base 10 by first locking member 30; swing locking member 70 is rotatably connected in through cavity 223, and swing locking member 70 can swing vertically to protrude outward from the outer peripheral wall of telescopic connector 20 and abut against the inner peripheral wall of locking groove 4 to lock the axial position of telescopic connector 20; elastic upper push member 40 is slidably connected in first mounting cavity 222, and elastic upper push member 40 can move upward to push swing locking member 70 to swing vertically, and elastic upper push member 40 is locked to telescopic connector 20 by second locking member 50.

[0028] This application provides a container locking device for railway flatcars. In actual use, the projection of the flatcar 1 on the ground is rectangular. Four locking devices for the container 2 of the railway flatcar 1 are provided, each corresponding to one of the four right-angled parts of the flatcar 1. First, the mounting base 10 is mounted on the flatcar 1 and fixed with bolts 60, and then the container 2 is hoisted onto the flatcar 1. When it is necessary to release the telescopic connector 20, the first locking member 30 is released from locking the telescopic connector 20, and the second locking member 50 continues to lock the elastic upper push member 40. After the telescopic connector 20 is elastically inserted into the slot 3, the second locking member 50 is released from locking the elastic upper push member 40. The elastic upper push member 40 slides upward and drives the swing locking member 70 to swing vertically to the outside of the telescopic connector 20 to abut against the inner wall of the locking groove 4. The lateral tilting tendency of the container 2 can be eliminated by the pressure of the swing locking member 70 against the inner wall of the locking groove 4, avoiding the risk of the container 2 overturning and eliminating safety hazards.

[0029] When container 2 needs to be disassembled, pull down the lower end of the elastic top member 40 to gradually release the restriction of the elastic top member 40 on the swing locking member 70. Once the outer end of the swing locking member 70 swings vertically into the through cavity 223 and the upper end of the telescopic connector 20 retracts into the mounting base 10, the first locking member 30 locks the telescopic connector 20, and the second locking member 50 locks the axial position of the elastic top member 40 relative to the telescopic connector 20. This operation is convenient and simple, saves manpower, and improves work efficiency.

[0030] Compared with the prior art, when the telescopic connector 20 needs to be released, the first locking member 30 is released from locking the telescopic connector 20, the second locking member 50 continues to lock the elastic upper top member 40, after the telescopic connector 20 is elastically inserted into the insertion slot 3, the second locking member 50 is released from locking the elastic upper top member 40, and the elastic upper top member 40 slides upward to drive the swing locking member 70 to swing vertically to the outside of the telescopic connector 20 to abut against the inner side wall of the locking slot 4, so that the swing locking member 70 can eliminate the side inclination tendency of the container 2 by pressing the inner circumferential wall of the locking slot 4, thereby avoiding the risk of overturning of the container 2 and eliminating the safety hazard.

[0031] In a possible implementation, the embedding seat 10 has the structure as shown in Figures 1 to 3 , referring to Figures 1 to 3 , the embedding seat 10 is provided with an axially-through second installation cavity 11, and the telescopic connector 20 is slidingly connected in the second installation cavity 11. The telescopic connector 20 includes a telescopic column 22 and a first tension spring 21. The telescopic column 22 is slidingly connected in the second installation cavity 11, and a first installation cavity 222 and a through cavity 223 are arranged on the telescopic column 22. The first tension spring 21 is sleeved on the outer periphery of the telescopic column 22, one end of the first tension spring 21 is connected to the outer peripheral wall of the telescopic column 22, and the other end is connected to the inner wall of the second installation cavity 11. The first tension spring 21 can elastically pull the telescopic column 22 upward to make the upper end of the telescopic column 22 be inserted and matched with the insertion slot 3.

[0032] Specifically, when the telescopic connector 20 needs to be hidden, the lower end of the elastic upper top member 40 is pulled down, the outer end of the swing locking member 70 is vertically swung into the through cavity 223, and the upper end of the telescopic connector 20 is retracted into the embedding seat 10, then the telescopic connector 20 is locked by the first locking member 30 (at this time, the first tension spring 21 is in a stretched state), and the position of the elastic upper top member 40 relative to the telescopic connector 20 is locked by the second locking member 50. The operation is convenient and simple, saves manpower, and improves work efficiency.

[0033] When the telescopic connector 20 needs to be released, the first locking member 30 is released from locking the telescopic connector 20, the second locking member 50 continues to lock the elastic upper top member 40, the telescopic column 22 is inserted into the insertion slot 3 after being pulled upward by the first tension spring 21, then the second locking member 50 is released from locking the elastic upper top member 40, and the elastic upper top member 40 slides upward to drive the swing locking member 70 to swing vertically to the outside of the telescopic connector 20 to abut against the inner side wall of the locking slot 4, thereby stably locking the container 2 on the flat car 1.

[0034] In a possible implementation, the elastic upper top member 40 has the structure as shown in Figures 1 to 3 , referring to Figures 1 to 3The elastic upper top piece 40 comprises a top rod 41 and a second tension spring 43. The top rod 41 is slidingly connected in the first mounting cavity 222, and the upper end of the top rod 41 is provided with an outwardly protruding pushing table 42. The second tension spring 43 is sleeved on the outer periphery of the top rod 41, one end of the second tension spring 43 is connected to the outer peripheral wall of the top rod 41, and the other end is connected to the inner top wall of the first mounting cavity 222. The second tension spring 43 can pull the top rod 41 upward to make the pushing table 42 push the vertically oscillating locking piece 70 to oscillate vertically.

[0035] Specifically, when the telescopic connector 20 needs to be released, the first locking piece 30 is released to lock the telescopic connector 20, and the second locking piece 50 continues to lock the elastic upper top piece 40. After the telescopic connector 20 is elastically inserted into the insertion slot 3, the second locking piece 50 is released to lock the elastic upper top piece 40. The second tension spring 43 pulls the top rod 41 upward to make the pushing table 42 push the vertically oscillating locking piece 70 to oscillate vertically to the outside of the telescopic connector 20 to abut against the inner side wall of the locking slot 4. Not only is the horizontal movement of the container 2 relative to the flat car 1 limited, but also the upward movement of the container 2 relative to the flat car 1 is limited. Thus, the container 2 is stably locked on the flat car 1, avoiding the risk of overturning of the container 2 and eliminating the safety hazard.

[0036] When the container 2 needs to be disassembled, the lower end of the top rod 41 is pulled downward (at this time, the second tension spring 43 is compressed), and the pushing table 42 gradually contacts the pushing limit of the oscillating locking piece 70. After the outer end of the oscillating locking piece 70 oscillates vertically into the through cavity 223 and the upper end of the telescopic connector 20 is retracted into the embedded seat 10, the telescopic connector 20 is locked by the first locking piece 30, and the position of the elastic upper top piece 40 relative to the telescopic connector 20 is locked by the second locking piece 50. The operation is convenient and simple, saves manpower, and improves work efficiency.

[0037] Optionally, the outer peripheral wall of the top rod 41 is provided with a slot hole, and the second locking piece 50 is radially slidingly connected to the lower end of the telescopic connector 20 and is used for being inserted and matched with the slot hole to lock the position of the top rod 41 relative to the telescopic connector 20.

[0038] Optionally, the lower end of the telescopic connector 20 is connected with a connecting block, the second locking piece 50 penetrates the connecting block along the radial direction of the telescopic column 22 and is threadedly connected with the connecting block. The inner end of the second locking piece 50 is used for abutting and matching with the outer peripheral wall of the top rod 41 to lock the position of the top rod 41 relative to the telescopic connector 20.

[0039] Optionally, the lower end of the top rod 41 is connected with a boss 80 used for abutting and matching with the lower end surface of the telescopic column 22. The second locking piece 50 is arranged between the telescopic connector 20 and the boss 80 and abuts and matches with the top surface of the boss 80 and the lower end surface of the telescopic connector 20, respectively.

[0040] In some embodiments, referring toFigures 1 to 4 The swing locking member 70 comprises a rotating shaft 71, a swing lever 72 and a torsion spring 73. The rotating shaft 71 is rotatably connected to the through cavity 223 and extends along the tangential direction of the telescopic connector 20. The swing lever 72 is connected to the outer periphery of the rotating shaft 71 and can swing vertically outwardly beyond the outer periphery of the telescopic connector 20 and abut against the inner periphery of the locking groove 4 under the pushing of the pushing table 42. The torsion spring 73 is sleeved on the outer periphery of the rotating shaft 71 and has one end connected to the inner periphery of the through cavity 223 and the other end connected to the swing lever 72. The torsion spring 73 is used to swing the swing lever 72 back into the through cavity 223.

[0041] Specifically, the swing lever 72 extends along the radial direction of the rotating shaft 71 and swings vertically outwardly beyond the outer periphery of the telescopic connector 20 and abuts against the inner periphery of the locking groove 4 under the upward pushing of the pushing table 42 (the torsion of the torsion spring 73 increases), thereby locking the up-down position of the container 2. When the pushing table 42 moves downward, the swing lever 72 is no longer restricted and the torsion spring 73 swings the swing lever 72 back into the through cavity 223, thereby releasing the restriction on the up-down position of the container 2.

[0042] In a possible implementation, the telescopic connector 20 has the structure as shown in Figure 2 and Figure 3 . Referring to Figure 2 and Figure 3 , the outer periphery of the telescopic connector 20 is provided with a first positioning groove 221 extending in the radial direction. The first locking member 30 is slidably connected to the bottom of the embedding seat 10 and is used to be inserted into the first positioning groove 221 to lock the axial position of the telescopic connector 20.

[0043] Specifically, after the telescopic connector 20 is pulled downward to disengage from the insertion slot 3, in order to avoid the telescopic connector 20 rebounding into the insertion slot 3, the slidable first locking member 30 is inserted into the first positioning groove 221, thereby locking the position of the telescopic connector 20 and ensuring the stability of the telescopic connector 20 in use.

[0044] In some embodiments, referring to Figure 2 and Figure 3 , the lower end of the elastic upper pushing member 40 is provided with a boss 80 protruding outwardly. The second locking member 50 is arranged between the telescopic connector 20 and the boss 80 and abuts against the top surface of the boss 80 and the lower end surface of the telescopic connector 20, respectively. The outer periphery of the boss 80 is provided with a second positioning groove 81 for insertion and cooperation with the first locking member 30. The first locking member 30 can be inserted into the second positioning groove 81 to lock the positions of the telescopic connector 20 and the elastic upper pushing member 40.

[0045] Specifically, the boss 80 and the lower end surface of the telescopic connector 20 clamp the second locking member 50, thereby restricting the relative axial position between the boss 80 and the telescopic connector 20.

[0046] When the telescopic connector 20 needs to be released, the first locking member 30 is released from locking the telescopic connector 20, the second locking member 50 continues to be embedded between the boss 80 and the telescopic connector 20, and after the telescopic connector 20 is elastically inserted into the insertion slot 3, the second locking member 50 is pulled outwards of the telescopic connector 20, the elastic upper pushing member 40 slides upwards to push the swing locking member 70 to swing vertically to protrude outwards of the outer peripheral wall of the telescopic connector 20 and abut against the inner peripheral wall of the locking groove 4 to lock the axial position of the telescopic connector 20, and finally the first locking member 30 is inserted into the second positioning groove 81, while limiting the axial movement of the telescopic connector 20 and the elastic upper pushing member 40, thereby improving the stability of the locking of the container 2.

[0047] When the container 2 needs to be disassembled, the lower end of the elastic upper pushing member 40 is pulled down, after the elastic upper pushing member 40 is released from limiting the swing locking member 70 and the swing locking member 70 automatically swings back into the through cavity 223, and the upper end of the telescopic connector 20 is inserted into the embedded seat 10, the first locking member 30 is inserted into the first positioning groove 221, and the second locking member 50 is inserted between the boss 80 and the telescopic connector 20, so as to lock the axial position of the elastic upper pushing member 40 relative to the telescopic column 22. The operation is convenient and simple, saves manpower, and improves work efficiency.

[0048] In some embodiments, referring to Figures 1 to 3 , the first locking member 30 includes an elastic member 31, a sliding block 32, and an insertion block 33, the elastic member 31 is connected to the bottom of the embedded seat 10 and extends horizontally towards the telescopic connector 20, the sliding block 32 is connected to the extension end of the elastic member 31 and is slidingly connected to the bottom surface of the embedded seat 10 along the radial direction of the telescopic connector 20, and the insertion block 33 is connected to one side of the sliding block 32 close to the telescopic connector 20 and is used for insertion and cooperation with the first positioning groove 221 or the second positioning groove 81.

[0049] Specifically, when the insertion block 33 needs to be separated from the first positioning groove 221 or the second positioning groove 81, the sliding block 32 is moved away from the elastic upper pushing member 40 (at this time, the elastic member 31 is in a compressed state), when the insertion block 33 needs to be inserted into the first positioning groove 221 or the second positioning groove 81, the sliding block 32 is released, the elastic member 31 elastically pushes the sliding block 32 to move towards the elastic upper pushing member 40, and the locking is completed, thereby improving the locking efficiency.

[0050] In some embodiments, referring to Figure 1 and Figure 2 , the second locking member 50 is a U-shaped clamp arranged between the telescopic connector 20 and the boss 80, and the U-shaped clamp is clamped to the lower outer periphery of the elastic upper pushing member 40.

[0051] Specifically, the U-shaped clasp is arranged around the outer periphery of the elastic upper top piece 40, is directly clamped between the boss 80 and the telescopic connector 20 in use, and can be pulled out to the outside of the telescopic connector 20 when not in use, thereby improving the practicability.

[0052] In a possible implementation, the swing locking piece 70 has the structure as shown in Figures 1 to 3 , and two swing locking pieces 70 are symmetrically arranged on both sides of the elastic upper top piece 40. Figures 1 to 3

[0053] Specifically, the arrangement of the two swing locking pieces 70 can enable the elastic upper top piece 40 to simultaneously drive the two swing locking pieces 70 to swing and limit, thereby further improving the limiting effect.

[0054] In a possible implementation, the embedding seat 10 has the structure as shown in Figures 1 to 3 , and the embedding seat 10 is connected with the flat car 1 through the bolt 60. Figures 1 to 3

[0055] Specifically, the embedding seat 10 is embedded on the flat car 1, the top surface of the embedding seat 10 is flush with the top surface of the flat car 1, and the embedding seat 10 and the flat car 1 are connected through the bolt 60, so as to complete the installation of the embedding seat 10, thereby achieving simple and stable installation.

[0056] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.​​

Claims

1. A container locking device for railway flat cars, a bottom wall of the container is provided with a slot, an inner circumferential wall of the slot is provided with a locking groove, characterized in that, The container locking device for railway flat cars comprises: an embedded seat arranged through the flat car in the up-down direction; a telescopic connector arranged axially through the embedded seat and slidingly fitted with the embedded seat, the upper end of the telescopic connector being able to elastically protrude from the top surface of the embedded seat to be insertedly fitted with the insertion slot, the lower part of the telescopic connector being provided with an axially extending first installation cavity, the peripheral wall of the telescopic connector being provided with a through cavity in communication with the first installation cavity, the telescopic connector being locked with the embedded seat through a first locking member; a swing locking member rotatably connected in the through cavity, the swing locking member being able to swing vertically to protrude outward from the peripheral wall of the telescopic connector and abut against the inner peripheral wall of the locking slot to lock the axial position of the telescopic connector; and an elastic upper pushing member slidingly connected in the first installation cavity, the elastic upper pushing member being able to move upward to push the swing locking member to swing vertically, the elastic upper pushing member being locked with the telescopic connector through a second locking member.

2. The container locking device for a railway flat car as claimed in claim 1, wherein, The embedded seat is provided with an axially extending second installation cavity, the telescopic connector is slidingly connected in the second installation cavity, and the telescopic connector comprises: a telescopic column slidingly connected in the second installation cavity, the first installation cavity and the through cavity being arranged on the telescopic column; and a first tension spring sleeved on the peripheral wall of the telescopic column, one end of the first tension spring being connected to the peripheral wall of the telescopic column and the other end being connected to the inner wall of the second installation cavity, the first tension spring being able to elastically pull the telescopic column upward to make the upper end of the telescopic column insertedly fitted with the insertion slot.

3. The container locking device for a railway flat car as defined in claim 1 wherein, The elastic upper pushing member comprises: a pushing rod slidingly connected in the first installation cavity, the upper end of the pushing rod being provided with a pushing platform protruding outward; and a second tension spring sleeved on the peripheral wall of the pushing rod, one end of the second tension spring being connected to the peripheral wall of the pushing rod and the other end being connected to the inner top wall of the first installation cavity, the second tension spring being able to pull the pushing rod upward to make the pushing platform push the swing locking member to swing vertically.

4. The container locking device for a railway flat car as defined in claim 3 wherein, The swing locking member comprises: a rotating shaft rotatably connected in the through cavity and having a main shaft extending along the tangential direction of the telescopic connector; a swing rod connected to the peripheral wall of the rotating shaft, the swing rod being able to swing vertically under the pushing of the pushing platform to protrude outward from the peripheral wall of the telescopic connector and abut against the inner peripheral wall of the locking slot; and a torsional spring sleeved on the peripheral wall of the rotating shaft, one end of the torsional spring being connected to the inner peripheral wall of the through cavity and the other end being connected to the swing rod, the torsional spring being used to drive the swing rod to swing back into the through cavity.

5. The container locking device for a railway flat car as defined in claim 1 wherein, The peripheral wall of the telescopic connector is provided with a radially extending first positioning slot, the first locking member is slidingly connected to the bottom of the embedded seat and is used to be insertedly fitted in the first positioning slot to lock the axial position of the telescopic connector.

6. The container locking device for a railway flat car as defined in claim 5 wherein, The lower end of the elastic upper top piece is provided with a boss protruding outward, the second locking piece is arranged between the telescopic connector and the boss and abuts against the top surface of the boss and the lower end surface of the telescopic connector respectively, the outer circumferential wall of the boss is provided with a second positioning groove in plug-in cooperation with the first locking piece, and the first locking piece can be plugged into the second positioning groove to lock the positions of the telescopic connector and the elastic upper top piece.

7. The container locking device for a railway flat car as defined in claim 6 wherein, The first locking piece comprises: an elastic piece connected to the bottom of the embedded seat and horizontally extending towards the telescopic connector; a sliding block connected to the extension end of the elastic piece and slidingly connected to the bottom surface of the embedded seat along the radial direction of the telescopic connector; and a plug block connected to one side of the sliding block close to the telescopic connector and used for plug-in cooperation with the first positioning groove or the second positioning groove.

8. The container locking device for a railway flat car as defined in claim 6 wherein, The second locking piece is a U-shaped clamp arranged between the telescopic connector and the boss, and the U-shaped clamp is clamped to the lower outer circumferential wall of the elastic upper top piece.

9. The container locking device for a railway flat car of claim 1 wherein, The swing locking pieces are provided in two and symmetrically arranged on both sides of the elastic upper top piece.

10. The container locking device for a railway flat car of claim 1 wherein, The embedded seat and the flat car are connected by bolts.

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