High-speed rail freight container locking mechanism

Abstract

The application discloses a high-speed rail freight container locking mechanism, which comprises a rack, a locking piece, a driving module and a transmission module, wherein the rack is provided with a containing cavity; one end of the locking piece is rotatably installed in the containing cavity through a first rotating shaft; the output shaft of the driving module is rotatably installed on the rack; the transmission module comprises a connecting arm, a telescopic elastic buffer assembly and a swing arm; one end of the connecting arm is connected with the first rotating shaft; the other end of the connecting arm is rotatably connected with one end of the elastic buffer assembly through a second rotating shaft; the other end of the elastic buffer assembly is rotatably connected with one end of the swing arm through a third rotating shaft; the other end of the swing arm is fixedly connected with the output shaft of the driving module; when the locking piece rotates to a limiting position, the rotating axes of the second rotating shaft, the third rotating shaft and the output shaft are in the same self-locking plane. The locking mechanism provided by the application can form self-locking when the locking piece is in the limiting position, and can effectively avoid the situation that the locking piece unexpectedly releases the limiting locking of the container.

Description

Technical Field

[0001] This invention relates to the field of high-speed rail freight technology, and in particular to a locking mechanism for high-speed rail freight containers. Background Technology

[0002] In high-speed rail freight, goods are typically stored in containers for easy handling, and then the containers are transported into the high-speed rail carriages. During transport, the carriages sway due to the train's starts, stops, and turns. To prevent collisions caused by violent swaying of the containers within the carriages, locking mechanisms are usually installed at the bottom of the carriages. These mechanisms, located on both sides of the containers, work together to clamp and lock them, reducing the degree of swaying. Existing locking mechanisms generally include a frame, a drive unit, and locking components. The locking components are rotatably mounted on the frame, and the drive unit can rotate the locking components to retract into or extend from the frame. Locking components extending from the frame can be used to abut and restrain the container. However, while existing locking mechanisms can restrain and position swaying containers by the locking components, repeated impacts from the swaying containers can cause the locking components to repeatedly rotate, potentially leading to the drive unit causing the locking components to deviate from their restrained position and release the locking mechanism from the container's restraint. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a locking mechanism for high-speed rail freight containers, whose transmission module can form a self-locking mechanism when the locking element is in the limit position, effectively preventing the locking element from accidentally releasing the limit lock on the container.

[0004] A locking mechanism for a high-speed rail freight container according to an embodiment of the present invention includes a frame, a locking member, a drive module, and a transmission module. The frame is provided with a receiving cavity. One end of the locking member is rotatably mounted in the receiving cavity via a first rotating shaft. The locking member has a clearance position and a limiting position. When the locking member is in the clearance position, it is housed in the receiving cavity. When the locking member is in the limiting position, it extends out of the receiving cavity to abut against and limit the container. The drive module is mounted in the frame, and its output shaft is rotatably mounted in the frame. The transmission module is located in the frame and includes a connecting arm, a retractable elastic buffer assembly, and a swing arm. One end of the connecting arm is connected to the first rotating shaft, and the other end of the connecting arm is connected to one end of the elastic buffer assembly via a second rotating shaft. The elastic buffer assembly is rotatably connected to one end of the swing arm via a third rotating shaft. The other end of the swing arm is fixedly connected to the output shaft of the drive module. The first rotating shaft and the second rotating shaft are spaced apart, the second rotating shaft and the third rotating shaft are spaced apart, and the third rotating shaft and the output shaft are spaced apart. The rotation axes of the first rotating shaft, the second rotating shaft, the third rotating shaft, and the output shaft are parallel to each other. The drive module can drive the locking member to rotate to the avoidance position or the limit position through the transmission module. When the locking member rotates to the limit position, the rotation axes of the second rotating shaft, the third rotating shaft, and the output shaft are in the same self-locking plane. The extension and retraction direction of the elastic buffer assembly is parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft.

[0005] According to an embodiment of the present invention, a high-speed rail freight container locking mechanism has at least the following beneficial effects: When the drive module drives the locking member into the limit position through the transmission module, the rotation axes of the second rotating shaft, the third rotating shaft, and the output shaft are on the same self-locking plane, and the extension and retraction direction of the elastic buffer component is parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft. Therefore, when the swaying container impacts the locking member, the locking member can basically only drive the elastic buffer component to extend and retract for buffering, and the force exerted by the elastic buffer component on the swing arm is basically only on the self-locking plane, unable to generate torque on the swing arm or generating very little torque on the swing arm, thus unable to drive the swing arm to drive the output shaft of the drive module to rotate repeatedly. Thus, the transmission module forms a self-locking mechanism, allowing the swing arm to remain in a fixed position. The drive module does not rotate repeatedly, ensuring that the locking component maintains its limit lock on the container under the action of the elastic buffer component during impact. Furthermore, the locking component automatically returns to its limit position after the impact, effectively preventing accidental release of the limit lock on the container, thus enhancing safety. In addition, when a swaying container impacts the locking component, the drive module does not move repeatedly. Since the output shaft is mounted on the frame, the radial force on the output shaft is also borne by the frame, reducing the impact of radial force on the entire drive module. This protects the drive device, reduces wear, and ensures the service life of the entire locking mechanism.

[0006] According to some embodiments of the present invention, the drive module includes a foot pedal, which is rotatably mounted on the frame via a fourth rotating shaft, and the foot pedal is drively connected to the output shaft.

[0007] According to some embodiments of the present invention, the drive module includes a connecting block, a pull rod, and a lever. The upper end of the connecting block is fixedly mounted on the foot pedal. The lower end of the connecting block is rotatably connected to the lower end of the pull rod via a fifth rotating shaft. The upper end of the pull rod is rotatably connected to the lever via a sixth rotating shaft. The lever is fixed on the output shaft. The output shaft is rotatably mounted on the frame. The rotation axes of the fifth rotating shaft, the sixth rotating shaft, and the output shaft are parallel.

[0008] According to some embodiments of the present invention, a locking device is provided between the foot pedal and the frame, and when the foot pedal drives the locking member to the limit position, the locking device can restrict the rotation of the foot pedal.

[0009] According to some embodiments of the present invention, the lower end of the connecting block is provided with a clearance hole, the lower end of the pull rod is inserted into the clearance hole, and the opposite side walls of the clearance hole are provided with sliding grooves. The locking device includes a limiting rod and a limiting plate. The two ends of the limiting rod are inserted into the two sliding grooves one-to-one. The limiting rod can move up and down along the sliding groove. A limiting elastic element is provided between the limiting rod and the connecting block. The limiting elastic element is used to drive the limiting rod to descend. The limiting plate is fixedly installed on the frame. The limiting plate is located on the side of the pull rod away from the output shaft. One end of the limiting plate passes through the clearance hole and is located below the limiting rod. The upper surface of the limiting plate is at least partially a limiting surface. The distance between the limiting surface and the rotation axis of the fourth rotating shaft gradually decreases in the direction from away from the pull rod to close to the pull rod. When the locking member is in the limiting position, the limiting rod abuts against the limiting surface, and the limiting plate abuts against the pull rod.

[0010] According to some embodiments of the present invention, the frame is provided with a mounting cavity, the bottom wall of the mounting cavity is provided with two spaced mounting plates, the transmission module is located in the mounting cavity, the connecting block, the pull rod, the lever block and the foot pedal are located between the two mounting plates, and the output shaft and the fourth rotating shaft are rotatably mounted on the two mounting plates.

[0011] According to some embodiments of the present invention, the elastic buffer assembly includes a buffer spring, an outer rod, and an inner rod. The outer rod is sleeved on the inner rod, and the buffer spring is disposed between the outer rod and the inner rod. The outer rod and the inner rod are capable of relative sliding and telescoping, and a limit structure is provided between the outer rod and the inner rod. One of the outer rod and the inner rod is rotatably connected to the connecting arm via a second rotating shaft, and the other is rotatably connected to one end of the swing arm via a third rotating shaft.

[0012] According to some embodiments of the present invention, the outer rod is provided with a mounting groove, a first slot is provided on one side of the mounting groove along its length direction, a second slot is provided on the side of the mounting groove facing the inner rod, the inner rod is inserted into the mounting groove through the second slot, the limiting structure includes a retaining plate, the retaining plate is detachably mounted on the outer rod and located at the first slot, the inner rod is provided with a limiting groove, and a portion of the retaining plate passes through the limiting groove.

[0013] According to some embodiments of the present invention, two receiving cavities are provided, the frame is provided with a mounting cavity, the mounting cavity is located between the two receiving cavities, two sets of transmission modules are provided, the transmission module and the drive module are located in the mounting cavity, the drive module is located between the two transmission modules, wherein the connecting arms of the two sets of transmission modules are rotatably connected to the corresponding locking members through corresponding second rotating shafts, and the swing arms of the two sets of transmission modules are fixedly connected to the output shaft of the drive module.

[0014] According to some embodiments of the present invention, the two receiving cavities are arranged in a front-rear direction, the third rotating shaft is located in front of the first rotating shaft, the rotation axis of the third rotating shaft is in the front-rear direction, and both locking members rotate counterclockwise when switching from the limiting position to the avoidance position. A buffer elastic member is provided between the locking member located in front and the frame. When the two locking members are in the limiting position, the elastic buffer assembly located in the rear restricts the locking member located in the rear to rotate counterclockwise, and the buffer elastic member restricts the locking member located in the front to rotate clockwise.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of a high-speed rail freight container locking mechanism (with the locking element located in the limiting position) according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A top view of a locking mechanism for a high-speed rail freight container is shown.

[0019] Figure 3 for Figure 2 The image shown is a cross-sectional view of a high-speed rail freight container locking mechanism at section AA.

[0020] Figure 4 for Figure 2 The image shown is a cross-sectional view of a high-speed rail freight container locking mechanism at section BB.

[0021] Figure 5 for Figure 1 A schematic diagram of a high-speed rail freight container locking mechanism (with the locking element located in an avoidance position) is shown.

[0022] Figure 6for Figure 5 A cross-sectional view of a locking mechanism for a high-speed rail freight container is shown.

[0023] Figure 7 for Figure 1 An exploded view of a locking mechanism for a high-speed rail freight container is shown.

[0024] Figure 8 for Figure 1 An exploded view of the transmission module of a locking mechanism for a high-speed rail freight container is shown.

[0025] Figure 9 for Figure 1 An exploded view of the drive module of a locking mechanism for a high-speed rail freight container is shown.

[0026] Figure label:

[0027] The components include: frame 100, receiving cavity 110, mounting cavity 120, mounting plate 130, locking element 200, first rotating shaft 210, drive module 300, output shaft 310, foot pedal 320, fourth rotating shaft 321, connecting block 330, clearance hole 331, slide groove 332, pull rod 340, fifth rotating shaft 341, sixth rotating shaft 342, lever block 350, transmission module 400, connecting arm 410, second rotating shaft 411, elastic buffer assembly 420, buffer spring 421, outer rod 422, mounting groove 4221, first groove, second groove, inner rod 423, limiting groove 4231, clamping plate 424, swing arm 430, third rotating shaft 431, clamping device 500, limiting rod 510, limiting plate 520, limiting surface 521, limiting elastic element 530, and buffer elastic element 600. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0030] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0032] According to an embodiment of the present invention, a locking mechanism for a high-speed rail freight container includes a frame 100, a locking member 200, a drive module 300, and a transmission module 400. The frame 100 is provided with a receiving cavity 110. One end of the locking member 200 is rotatably mounted in the receiving cavity 110 via a first rotating shaft 210. The locking member 200 has a clearance position and a limiting position. When the locking member 200 is in the clearance position, it is housed in the receiving cavity 110. When the locking member 200 is in the limiting position, it extends out of the receiving cavity 110 to abut against the limiting container. The drive module 300 is mounted in the frame 100, and its output shaft 310 is rotatably mounted in the frame 100. The transmission module 400 is located in the frame 100 and includes a connecting arm 410, a retractable elastic buffer assembly 420, and a swing arm 430. One end of the connecting arm 410 is connected to the first rotating shaft 210, and the other end of the connecting arm 410 is connected to a second rotating shaft. One end of the elastic buffer assembly 420 is rotatably connected to the elastic buffer assembly 420. The other end of the elastic buffer assembly 420 is rotatably connected to one end of the swing arm 430 via the third rotating shaft 431. The other end of the swing arm 430 is fixedly connected to the output shaft 310 of the drive module 300. The first rotating shaft 210 and the second rotating shaft 411 are spaced apart. The second rotating shaft 411 and the third rotating shaft 431 are spaced apart. The third rotating shaft 431 and the output shaft 310 are spaced apart. The rotation axes of the first rotating shaft 210, the second rotating shaft 411, the third rotating shaft 431 and the output shaft 310 are parallel to each other. The drive module 300 can drive the locking member 200 to rotate to the avoidance position or the limit position through the transmission module 400. When the locking member 200 rotates to the limit position, the rotation axes of the second rotating shaft 411, the third rotating shaft 431 and the output shaft 310 are in the same self-locking plane. The extension and retraction direction of the elastic buffer assembly 420 is parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft 411.

[0033] When the drive module 300 drives the locking member 200 into the limit position via the transmission module 400, the rotation axes of the second rotating shaft 411, the third rotating shaft 431, and the output shaft 310 are on the same self-locking plane. Furthermore, the extension and retraction direction of the elastic buffer component 420 is parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft 411. Therefore, when the swaying container impacts the locking member 200, the locking member 200 can only essentially drive the elastic buffer component 420 to extend and retract for cushioning. The force exerted by the elastic buffer component 420 on the swing arm 430 is primarily confined to the self-locking plane, failing to generate torque or generating very little torque on the swing arm 430. Consequently, it cannot drive the swing arm 430 to repeatedly rotate the output shaft 310 of the drive module 300. Thus, the transmission module 400 achieves self-locking. The swing arm 430 can be maintained in a fixed position, and the drive module 300 will not rotate repeatedly. This allows the locking component 200 to maintain its limit lock on the container under the drive of the elastic buffer component 420 during impact. Moreover, the locking component 200 can automatically return to the limit position after the impact, effectively preventing the locking component 200 from accidentally releasing the limit lock on the container, thus improving safety. In addition, when the swaying container impacts the locking component 200, the drive module 300 will not move repeatedly. Since the output shaft 310 is rotatably mounted on the frame 100, the radial force on the output shaft 310 will also be borne by the frame 100, reducing the impact of the radial force on the drive module 300 as a whole, thus protecting the drive device, reducing wear on the drive device, and ensuring the service life of the entire locking mechanism.

[0034] According to some embodiments of the present invention, the drive module 300 includes a foot pedal 320, which is rotatably mounted on the frame 100 via a fourth rotating shaft 321, and is drively connected to the output shaft 310. Thus, the drive module 300 adopts a fully mechanical structure driven by human power, which is less prone to damage and has a longer service life.

[0035] According to some embodiments of the present invention, the drive module 300 includes a connecting block 330, a pull rod 340, and a lever 350. The upper end of the connecting block 330 is fixedly mounted on the foot pedal 320. The lower end of the connecting block 330 is rotatably connected to the lower end of the pull rod 340 via a fifth rotating shaft 341. The upper end of the pull rod 340 is rotatably connected to the lever 350 via a sixth rotating shaft 342. The lever 350 is fixed on the output shaft 310, which is rotatably mounted on the frame 100. The rotation axes of the fifth rotating shaft 341, the sixth rotating shaft 342, and the output shaft 310 are parallel. With the above configuration, the operator can drive the foot pedal 320 to rotate using their foot. The locking member 200 can then be driven to rotate to an avoidance position or a limit position through the transmission cooperation between the foot pedal 320, the connecting block 330, the pull rod 340, the lever 350, the output shaft 310, and the transmission module 400.

[0036] According to some embodiments of the present invention, a locking device 500 is provided between the foot pedal 320 and the frame 100. When the foot pedal 320 drives the locking member 200 to the limit position, the locking device 500 can restrict the rotation of the foot pedal 320. When the locking member 200 is in the limit position, the locking device 500 can fix the foot pedal 320 in the corresponding position, so that the drive module 300 itself also has a self-locking function, preventing the foot pedal 320, pull rod 340 and other components of the drive module 300 from rotating automatically due to vibration or other factors, thereby preventing the drive module 300 from driving the transmission module 400 to unlock, and further improving the safety of the locking mechanism.

[0037] According to some embodiments of the present invention, the lower end of the connecting block 330 is provided with a clearance hole 331, the lower end of the pull rod 340 is inserted into the clearance hole 331, and the opposite side walls of the clearance hole 331 are provided with sliding grooves 332. The locking device 500 includes a limiting rod 510 and a limiting plate 520. The two ends of the limiting rod 510 are inserted into the two sliding grooves 332 respectively, and the limiting rod 510 can rise and fall along the sliding grooves 332. A limiting elastic element 530 is provided between the limiting rod 510 and the connecting block 330. The limiting elastic element 530 is used to drive the limiting rod 510 to fall. The limiting plate 520... The locking member 200 is fixedly installed on the frame 100. The limiting plate 520 is located on the side of the pull rod 340 away from the output shaft 310. One end of the limiting plate 520 passes through the clearance hole 331 and is located below the limiting rod 510. The upper surface of the limiting plate 520 is at least partially a limiting surface 521. The distance between the limiting surface 521 and the rotation axis of the fourth rotating shaft 321 gradually decreases in the direction from away from the pull rod 340 to close to the pull rod 340. When the locking member 200 is in the limiting position, the limiting rod 510 abuts against the limiting surface 521, and the limiting plate 520 abuts against the pull rod 340. Therefore, when the foot pedal 320 drives the locking member 200 to rotate to the limit position, the abutting fit between the limit plate 520 and the pull rod 340 can restrict the foot pedal 320 from continuing to rotate, ensuring that the rotation axes of the second rotating shaft 411, the third rotating shaft 431 and the output shaft 310 are exactly on the same self-locking plane, so that the transmission module 400 can just form a self-lock. The abutting fit between the limit surface 521 and the limit rod 510 can form a resistance that prevents the foot pedal 320 from driving the locking member 200 to rotate toward the avoidance position, thus avoiding the situation where the foot pedal 320 accidentally rotates in the opposite direction and causes the transmission module 400 to unlock, further improving safety.

[0038] According to some embodiments of the present invention, the frame 100 is provided with a mounting cavity 120, and the bottom wall of the mounting cavity 120 is provided with two spaced-apart mounting plates 130. The transmission module 400 is located inside the mounting cavity 120, and the connecting block 330, pull rod 340, lever block 350, and foot pedal 320 are located between the two mounting plates 130. The output shaft 310 and the fourth rotating shaft 321 are both rotatably mounted on the two mounting plates 130. With the above arrangement, the two mounting plates 130 can effectively support the foot pedal 320 and the output shaft 310, making the foot pedal 320 and the output shaft 310 more securely mounted.

[0039] It should be noted that the foot pedal 320 and the output shaft 310 can also be connected by other means of transmission, for example, the foot pedal 320 and the output shaft 310 can be connected by chain transmission.

[0040] It is conceivable that the aforementioned drive module 300 can also be configured in other ways. For example, the drive module 300 may include a motor, which is connected to the output shaft 310 via a worm gear transmission structure to form a self-locking function.

[0041] According to some embodiments of the present invention, the elastic buffer assembly 420 includes a buffer spring 421, an outer rod 422, and an inner rod 423. The outer rod 422 is sleeved on the inner rod 423, and the buffer spring 421 is disposed between the outer rod 422 and the inner rod 423. The outer rod 422 and the inner rod 423 can slide and extend relative to each other, and a limiting structure is provided between the outer rod 422 and the inner rod 423. One of the outer rod 422 and the inner rod 423 is rotatably connected to the connecting arm 410 via a second rotating shaft 411, and the other is rotatably connected to one end of the swing arm 430 via a third rotating shaft 431. With the above configuration, the elastic buffer assembly 420 can elastically extend and retract within a certain range, and when the locking member 200 is located in the limiting device, the extension and retraction direction of the elastic buffer assembly 420 can be parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft 411.

[0042] According to some embodiments of the present invention, the outer rod 422 is provided with a mounting groove 4221. A first opening is provided on one side of the mounting groove 4221 along its length direction, and a second opening is provided on the side of the mounting groove 4221 facing the inner rod 423. The inner rod 423 is inserted into the mounting groove 4221 through the second opening. The limiting structure includes a retaining plate 424, which is detachably mounted on the outer rod 422 and located at the first opening. A limiting groove 4231 is provided on the inner rod 423, and a portion of the retaining plate 424 passes through the limiting groove 4231. Through the above arrangement, the retaining plate 424 can restrict the inner rod 423 within the mounting groove 4221, preventing the inner rod 423 from detaching from the mounting groove 4221. Furthermore, the cooperation between the retaining plate 424 and the limiting groove 4231 can limit the range of relative sliding and extension between the inner rod 423 and the outer rod 422.

[0043] According to some embodiments of the present invention, two receiving cavities 110 are provided, and the frame 100 is provided with a mounting cavity 120 located between the two receiving cavities 110. Two sets of transmission modules 400 are provided, with the transmission module 400 and the drive module 300 located within the mounting cavity 120, and the drive module 300 located between the two transmission modules 400. The connecting arms 410 of both sets of transmission modules 400 are rotatably connected to the corresponding locking members 200 via corresponding second rotating shafts 411, and the swing arms 430 of both sets of transmission modules 400 are fixedly connected to the output shaft 310 of the drive module 300. With the above arrangement, one drive module 300 can simultaneously drive two locking members 200 to rotate to an avoidance position or a limiting position, so that the locking mechanism has two locking members 200 that can be used to abut and limit the container.

[0044] In some embodiments, the two locking elements 200 described above can be used to simultaneously abut and limit the container on the same side, wherein the two locking elements 200 can disperse the impact force of the container and enhance the buffering capacity of the locking mechanism.

[0045] According to some embodiments of the present invention, two receiving cavities 110 are arranged in a front-rear direction, a third rotating shaft 431 is located in front of the first rotating shaft 210, the rotation axis of the third rotating shaft 431 is in the front-rear direction, and both locking members 200 rotate counterclockwise when switching from the limiting position to the avoidance position. A buffer elastic member 600 is provided between the locking member 200 on the front side and the frame 100. When the two locking members 200 are in the limiting position, the elastic buffer assembly 420 on the rear side restricts the locking member 200 on the rear side from rotating counterclockwise, and the buffer elastic member 600 restricts the locking member 200 on the front side from rotating clockwise. Thus, the locking member 200 on the front side can be used to abut and limit the container on the left side, while the locking member 200 on the rear side can be used to abut and limit the container on the right side. With the above configuration, by simply setting a buffer elastic element 600 between the locking element 200 on the front side and the frame 100, the locking mechanism can be used to simultaneously abut and buffer the two containers on the left and right sides, reducing the number of locking mechanisms required and lowering costs.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A locking mechanism for high-speed rail freight containers, characterized in that, include: The frame (100) is provided with a receiving cavity (110); A locking member (200) is rotatably mounted in the receiving cavity (110) via a first rotating shaft (210) at one end. The locking member (200) has a clearance position and a limiting position. When the locking member (200) is in the clearance position, the locking member (200) is housed in the receiving cavity (110). When the locking member (200) is in the limiting position, the locking member (200) extends out of the receiving cavity (110) to abut against the limiting container. A drive module (300) is installed inside the frame (100), and the output shaft (310) of the drive module (300) is rotatably mounted on the frame (100). A transmission module (400) is located within the frame (100). The transmission module (400) includes a connecting arm (410), a retractable elastic buffer assembly (420), and a swing arm (430). One end of the connecting arm (410) is connected to the first rotating shaft (210), and the other end of the connecting arm (410) is rotatably connected to one end of the elastic buffer assembly (420) via a second rotating shaft (411). The other end of the elastic buffer assembly (420) is connected to one end of the swing arm (430) via a third rotating shaft (431). The swing arm (430) is rotatably connected to the other end, and is fixedly connected to the output shaft (310) of the drive module (300). The first rotating shaft (210) and the second rotating shaft (411) are spaced apart, the second rotating shaft (411) and the third rotating shaft (431) are spaced apart, and the third rotating shaft (431) and the output shaft (310) are spaced apart. The rotation axes of the first rotating shaft (210), the second rotating shaft (411), the third rotating shaft (431) and the output shaft (310) are parallel to each other. The drive module (300) can drive the locking member (200) to rotate to the avoidance position or the limit position through the transmission module (400). When the locking member (200) rotates to the limit position, the rotation axes of the second rotating shaft (411), the third rotating shaft (431), and the output shaft (310) are on the same self-locking plane. The extension and retraction direction of the elastic buffer assembly (420) is parallel to the self-locking plane and perpendicular to the rotation axis of the second rotating shaft (411). Two receiving cavities (110) are provided, and the frame (100) is provided with a mounting cavity (120). The mounting cavity (120) is located between the two receiving cavities (110). Two sets of transmission modules (400) are provided. The transmission module (400) and the drive module (300) are located in the mounting cavity (120), and the drive module (300) is located between the two transmission modules (400). The connecting arms (410) of the two sets of transmission modules (400) are rotatably connected to the corresponding locking members (200) through corresponding second rotating shafts (411). The swing arms (430) of the two sets of transmission modules (400) are fixedly connected to the output shaft (310) of the drive module (300). The two receiving cavities (110) are arranged in the front-back direction. The third rotating shaft (431) is located in front of the first rotating shaft (210). The rotation axis of the third rotating shaft (431) is in the front-back direction. When the two locking members (200) switch from the limiting position to the avoidance position, they both rotate counterclockwise. A buffer elastic member (600) is provided between the locking member (200) located on the front side and the frame (100). When the two locking members (200) are in the limiting position, the elastic buffer assembly (420) located on the rear side restricts the locking member (200) located on the rear side from rotating counterclockwise. The buffer elastic member (600) restricts the locking member (200) located on the front side from rotating clockwise.

2. The locking mechanism for a high-speed rail freight container according to claim 1, characterized in that, The drive module (300) includes a foot pedal (320), which is rotatably mounted on the frame (100) via a fourth rotating shaft (321), and the foot pedal (320) is connected to the output shaft (310) in a transmission connection.

3. The locking mechanism for a high-speed rail freight container according to claim 2, characterized in that, The drive module (300) includes a connecting block (330), a pull rod (340), and a lever (350). The upper end of the connecting block (330) is fixedly installed on the foot pedal (320). The lower end of the connecting block (330) is rotatably connected to the lower end of the pull rod (340) through a fifth rotating shaft (341). The upper end of the pull rod (340) is rotatably connected to the lever (350) through a sixth rotating shaft (342). The lever (350) is fixed on the output shaft (310). The output shaft (310) is rotatably installed on the frame (100). The rotation axes of the fifth rotating shaft (341), the sixth rotating shaft (342), and the output shaft (310) are parallel.

4. The locking mechanism for a high-speed rail freight container according to claim 3, characterized in that, A locking device (500) is provided between the foot pedal (320) and the frame (100). When the foot pedal (320) drives the locking member (200) to the limit position, the locking device (500) can restrict the rotation of the foot pedal (320).

5. A locking mechanism for a high-speed rail freight container according to claim 4, characterized in that, The lower end of the connecting block (330) is provided with a clearance hole (331), and the lower end of the pull rod (340) is inserted into the clearance hole (331). Slide grooves (332) are provided on the opposite side walls of the clearance hole (331). The locking device (500) includes a limiting rod (510) and a limiting plate (520). The two ends of the limiting rod (510) are inserted into the two slide grooves (332) respectively. The limiting rod (510) can rise and fall along the slide grooves (332). A limiting elastic element (530) is provided between the limiting rod (510) and the connecting block (330). The limiting elastic element (530) is used to drive the limiting rod (510) to descend. The limiting plate (520) is fixedly installed on the connecting block. The frame (100) has a limiting plate (520) located on the side of the pull rod (340) away from the output shaft (310). One end of the limiting plate (520) passes through the clearance hole (331) and is located below the limiting rod (510). At least part of the upper surface of the limiting plate (520) is a limiting surface (521). The distance between the limiting surface (521) and the rotation axis of the fourth rotating shaft (321) gradually decreases from away from the pull rod (340) to close to the pull rod (340). When the locking member (200) is in the limiting position, the limiting rod (510) abuts against the limiting surface (521), and the limiting plate (520) abuts against the pull rod (340).

6. A locking mechanism for a high-speed rail freight container according to claim 3, characterized in that, The frame (100) is provided with a mounting cavity (120), and the bottom wall of the mounting cavity (120) is provided with two spaced mounting plates (130). The transmission module (400) is located in the mounting cavity (120). The connecting block (330), the pull rod (340), the lever (350), and the foot pedal (320) are located between the two mounting plates (130). The output shaft (310) and the fourth rotating shaft (321) are rotatably mounted on the two mounting plates (130).

7. A locking mechanism for a high-speed rail freight container according to claim 1, characterized in that, The elastic buffer assembly (420) includes a buffer spring (421), an outer rod (422), and an inner rod (423). The outer rod (422) is sleeved on the inner rod (423). The buffer spring (421) is disposed between the outer rod (422) and the inner rod (423). The outer rod (422) and the inner rod (423) can slide and extend relative to each other. A limit structure is provided between the outer rod (422) and the inner rod (423). One of the outer rod (422) and the inner rod (423) is rotatably connected to the connecting arm (410) through the second rotating shaft (411), and the other is rotatably connected to one end of the swing arm (430) through the third rotating shaft (431).

8. A locking mechanism for a high-speed rail freight container according to claim 7, characterized in that, The outer rod (422) is provided with a mounting groove (4221). The mounting groove (4221) has a first slot on one side along its length direction. The mounting groove (4221) has a second slot on the side facing the inner rod (423). The inner rod (423) is inserted into the mounting groove (4221) through the second slot. The limiting structure includes a retaining plate (424). The retaining plate (424) is detachably installed on the outer rod (422) and located at the first slot. The inner rod (423) is provided with a limiting groove (4231). A part of the retaining plate (424) passes through the limiting groove (4231).

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