High-friction freight bottom conveying mechanism

Abstract

The application discloses a high-speed rail freight bottom friction conveying mechanism, which comprises a base, two swing supports and a driving device, the base is provided with an upper opening mounting cavity; the two swing supports are located in the mounting cavity, and the ends of the two swing supports close to each other are rotatably installed in the middle portions of the inner walls on the left and right sides of the mounting cavity; the ends of the two swing supports away from each other are provided with electric rollers, and the two electric rollers are arranged side by side; the driving device is arranged in the mounting cavity and below the two swing supports, the driving device can drive the two swing supports to swing upward or downward, when the swing supports swing downward, the swing supports drive the electric rollers to descend and be accommodated in the mounting cavity, and when the swing supports swing upward, the swing supports drive the electric rollers to ascend and protrude out of the mounting cavity. The high-speed rail freight bottom friction conveying mechanism can make the whole mechanism more compact, balanced in stress and smaller in overall size.

Description

Technical Field

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

[0002] With social development, high-speed rail freight is becoming increasingly popular. To facilitate the rapid loading and unloading of goods from high-speed rail carriages, goods are typically first loaded into high-speed rail freight containers, which are then transported into the carriages. To facilitate the movement of these containers within the carriages, a friction conveyor mechanism is usually installed at the bottom. Existing friction conveyors typically include a base with a drive chamber and a mounting chamber. Two swing arms are rotatably mounted within the mounting chamber, each with a conveyor roller rotatably mounted at its swing end. A motor and drive unit are installed within the drive chamber. The motor is connected to a drive shaft, which is rotatably mounted within the mounting chamber and passes through the two swing arms. The drive shaft is connected to the two conveyor rollers via a drive belt. A lifting device is located below the two swing arms, and the drive unit is connected to the lifting device via a lifting shaft. Thus, the drive unit can raise or lower the swing arms, allowing the conveyor rollers to be retracted and raised. When the conveyor rollers are raised, the motor drives them to rotate and transport the container. The existing friction conveyor mechanism is relatively complex and bulky, occupies a large installation space, and the forces borne by the two swing arms act on different positions of the drive shaft, and the forces borne by the two lifting devices also act on different positions of the lifting shaft, resulting in an imbalance of forces during the conveying of containers. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a bottom friction conveying mechanism for high-speed rail freight, which makes the entire mechanism more streamlined, compact, and with more balanced force distribution, and a smaller overall size.

[0004] According to an embodiment of the present invention, a high-speed rail freight bottom friction conveying mechanism includes a base, two swing brackets, and a driving device. The base has an upper open mounting cavity. The two swing brackets are located inside the mounting cavity, with one end of the two swing brackets close to each other rotatably mounted on the middle of the left and right inner walls of the mounting cavity, and the other ends of the two swing brackets far from each other being equipped with electric rollers, which are arranged side by side. The driving device is located inside the mounting cavity and below the two swing brackets. The driving device can drive the two swing brackets to swing upward or downward. When the swing brackets swing downward, they drive the electric rollers to descend and be housed in the mounting cavity. When the swing brackets swing upward, they drive the electric rollers to rise and protrude from the mounting cavity.

[0005] According to an embodiment of the present invention, a friction conveying mechanism for the bottom of a high-speed rail freight train has at least the following advantages: by using highly integrated electric rollers to replace the structure of conveyor rollers + motors, and by optimizing and adjusting the arrangement of the drive device and the swing bracket, the drive device, the two swing brackets, and the two electric rollers can all be installed in the same mounting cavity. Compared with the prior art, the friction conveying mechanism provided by the present invention does not require a drive cavity for installing the motor and drive device on the base, and also eliminates the transmission structure such as the transmission shaft and conveyor belt between the motor and the conveyor roller. The entire mechanism is more streamlined and compact, with a smaller overall size. Furthermore, since the two electric rollers can be arranged symmetrically side by side, the force on the entire mechanism is more balanced.

[0006] According to some embodiments of the present invention, the driving device includes a pusher, a lifting shaft, and two lifting rods. The pusher is mounted on the bottom wall of the mounting cavity. The two lifting rods are rotatably connected to the two swing brackets in a one-to-one correspondence. The two lifting rods are provided with first mounting holes with their axes along the front-rear direction. The two ends of the lifting shaft are inserted into the first mounting holes in a one-to-one correspondence. The lifting rods can slide back and forth along the lifting shaft. An elastic support is provided between the two swing brackets at their opposite ends and the base. The elastic support is used to drive the corresponding swing bracket to swing upward and reset. The pusher can push the lifting shaft downward.

[0007] According to some embodiments of the present invention, a support shaft is connected between the inner walls of the left and right sides of the mounting cavity. The support shaft is located in the middle of the mounting cavity. Each swing bracket includes two swing arms and a swing shaft. The two swing arms are arranged at intervals in the left and right direction. One end of the two swing arms is rotatably connected to the support shaft. The other end of the two swing arms is connected to the corresponding electric roller. The swing shaft is connected to the corresponding two swing arms and is located between the corresponding electric roller and the support shaft. The upper end of each of the two lifting rods is provided with a second mounting hole. The two swing shafts are correspondingly inserted into the two second mounting holes.

[0008] According to some embodiments of the present invention, a pressing block is installed on the output end of the pusher. The pressing block is inserted between the two lifting rods. The pressing block is located on the upper side of the lifting shaft. The lower side of the pressing block is provided with an inclined surface or a curved surface. When the pusher drives the pressing block to move back and forth, the pressing block pushes the lifting shaft down through the inclined surface or the curved surface.

[0009] According to some embodiments of the present invention, a guide seat is installed on the bottom wall of the mounting cavity, and guide grooves are provided at both ends of the guide seat. The guide seat has a receiving cavity located between two guide grooves. The receiving cavity is connected to the two guide grooves through a clearance hole. Two lifting rods are inserted into the two guide grooves one-to-one. The lifting rods can slide along the corresponding guide grooves. The lifting shaft passes through the clearance hole and the receiving cavity. The lower pressure block is inserted into the receiving cavity.

[0010] According to some embodiments of the present invention, a limiting member is rotatably installed on the inner wall of the receiving cavity, the upper surface of the lower pressing block is a horizontal plane, and the upper surface of the lower pressing block abuts against the limiting member.

[0011] According to some embodiments of the present invention, the lifting shaft is rotatably fitted with a rolling ring, the rolling ring being located within the receiving cavity, and the rolling ring engaging and abutting against the inclined surface or the curved surface of the lower pressing block.

[0012] According to some embodiments of the present invention, the rolling ring and the inner wall of the receiving cavity can cooperate to abut against and restrict the lifting shaft from moving back and forth relative to the guide seat.

[0013] According to some embodiments of the present invention, a cover plate is included, the cover plate being located above the support shaft, the cover plate being connected to the left and right side walls of the mounting cavity, and the cover plate abutting against the guide seat.

[0014] According to some embodiments of the present invention, each swing arm is detachably connected to a clamping member at one end away from the support shaft. The clamping member is located on the upper side of the swing arm, and the clamping member cooperates with the corresponding swing arm to clamp and fix the inner stator of the corresponding electric roller.

[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 bottom friction conveying mechanism according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 An exploded view of a bottom friction conveying mechanism for high-speed rail freight is shown.

[0019] Figure 3 for Figure 1An exploded view of the guide seat, lifting shaft, and lifting rod of a bottom friction conveying mechanism for high-speed rail freight is shown.

[0020] Figure 4 for Figure 1 A cross-sectional view of a high-speed rail freight bottom friction conveying mechanism (when the lower pressure block does not push the lifting shaft down);

[0021] Figure 5 for Figure 4 The image shown is a cross-sectional view of a high-speed rail freight bottom friction conveying mechanism (when the lower pressure block does not push the lifting shaft down) on section AA.

[0022] Figure 6 for Figure 1 A cross-sectional view of a bottom friction conveying mechanism for high-speed rail freight (when the lower pressure block pushes the lifting shaft to descend) is shown.

[0023] Figure 7 for Figure 1 The diagram shows a cross-sectional view of a bottom friction conveying mechanism for high-speed rail freight (with the electric rollers housed in the mounting cavity).

[0024] Figure label:

[0025] Base 100, mounting cavity 110, cover plate 120, swing bracket 200, swing arm 210, clamping component 211, swing shaft 220, support shaft 300, electric roller 400, pusher 510, output end 511, lower pressure block 520, inclined surface 521 or curved surface, lifting shaft 530, rolling ring 531, lifting rod 540, first mounting hole 541, second mounting hole 542, elastic support component 550, guide seat 600, guide groove 610, receiving cavity 620, clearance hole 630, limiting component 640, universal wheel 700. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 According to an embodiment of the present invention, a high-speed rail freight bottom friction conveying mechanism includes a base 100, two swing brackets 200, and a driving device. The base 100 has a mounting cavity 110 with an upper opening. The two swing brackets 200 are located inside the mounting cavity 110. The ends of the two swing brackets 200 that are close to each other are rotatably mounted on the middle of the left and right inner walls of the mounting cavity 110. The ends of the two swing brackets 200 that are far apart from each other are equipped with electric rollers 400. The two electric rollers 400 are arranged side by side, and one of the electric rollers 400... One electric roller 400 is located near the front wall of the mounting cavity 110, and the other electric roller 400 is located near the rear wall of the mounting cavity 110. The drive device is located inside the mounting cavity 110 and below the two swing brackets 200. The drive device can drive the two swing brackets 200 to swing upward or downward. When the swing bracket 200 swings downward, the swing bracket 200 drives the electric roller 400 to descend and be stored in the mounting cavity 110. When the swing bracket 200 swings upward, the swing bracket 200 drives the electric roller 400 to rise and protrude out of the mounting cavity 110.

[0031] By replacing the conveyor roller + motor structure with a highly integrated electric roller 400, and optimizing the arrangement of the drive device and swing bracket 200, the drive device, the two swing brackets 200, and the two electric rollers 400 can all be installed in the same mounting cavity 110. Compared with the prior art, the friction conveying mechanism provided by the present invention does not require a drive cavity for installing the motor and drive device on the base 100, and also eliminates the transmission structure such as the transmission shaft and conveyor belt between the motor and the conveyor roller. The entire mechanism is more streamlined and compact, with a smaller overall size. Furthermore, since the two electric rollers 400 can be arranged symmetrically side by side, the force on the entire mechanism is more balanced.

[0032] Reference Figure 2 , Figure 5 and Figure 6According to some embodiments of the present invention, the driving device includes a pusher 510, a lifting shaft 530, and two lifting rods 540. The pusher 510 is installed on the bottom wall of the mounting cavity 110. The two lifting rods 540 are rotatably connected to the two swing brackets 200 in a one-to-one correspondence. The two lifting rods 540 are provided with a first mounting hole 541 with the axis along the front-back direction. The two ends of the lifting shaft 530 are inserted into the first mounting hole 541 in a one-to-one correspondence. The lifting rods 540 can slide back and forth along the lifting shaft 530. An elastic support member 550 is provided between the two swing brackets 200 at their respective ends and the base 100. The elastic support member 550 is used to drive the corresponding swing bracket 200 to swing upward and reset. The pusher 510 can push the lifting shaft 530 downward. With the above configuration, the two swing brackets 200 can swing downward by pushing the lifting shaft 530 downward through the pusher 510. Thus, the entire friction conveying mechanism only needs one pusher 510, making the structure more streamlined and compact. The swing brackets 200 can be driven to swing upward and reset by the elastic support 550, without the pusher 510 pushing the lifting shaft 530 upward. Therefore, during the transport of containers by the electric rollers 400, the pusher 510 does not need to bear the weight of the container. The weight of the container is borne by the elastic support 550 and the swing brackets 200, which are rotatably mounted on one end of the base 100. The forces on both ends of the swing brackets 200 are more balanced. Furthermore, when the container shakes up and down due to the up and down movement of the carriage, the pusher 510 does not need to bear the vibration impact caused by the container, thus protecting the pusher 510. In addition, the elastic support 550 can also buffer the up and down movement of the container.

[0033] Reference Figure 2 and Figure 4 According to some embodiments of the present invention, a support shaft 300 is connected between the inner walls of the left and right sides of the mounting cavity 110. The support shaft 300 is located in the middle of the mounting cavity 110. Each swing bracket 200 includes two swing arms 210 and a swing shaft 220. The two swing arms 210 are arranged at intervals in the left and right direction. One end of the two swing arms 210 is rotatably connected to the support shaft 300, and the other end of the two swing arms 210 is connected to the corresponding electric roller 400. The swing shaft 220 is connected to the corresponding two swing arms 210 and is located between the corresponding electric roller 400 and the support shaft 300. The upper ends of the two lifting rods 540 are provided with second mounting holes 542, and the two swing shafts 220 are correspondingly inserted into the two second mounting holes 542. Among them, the elastic support member 550 is disposed between the other end of the swing arm 210 and the base 100. With the above configuration, the ends of the two swing frames that are close to each other are rotatably mounted on the support shaft 300. The inner wall of the mounting cavity 110 only needs to be fixed with the support shaft 300, which facilitates the installation of the swing frames.

[0034] When the height of the swing shaft 220 is the same as that of the support shaft 300, that is, when the swing shaft 220 and the support shaft 300 are on the same horizontal plane, the lifting rod 540 is vertically supported by the force of the swing shaft 220, and the push rod will not be subjected to the force in the front-back direction, thus forming a self-locking mechanism. At this time, the lifting rod 540 needs to be subjected to a greater pulling force to pull it down, which can limit the downward swing of the swing bracket 200 to a certain extent.

[0035] Reference Figure 4 In some embodiments, after the swing bracket 200 drives the electric roller 400 to extend out of the mounting cavity 110, the height position of the swing shaft 220 is higher than the height position of the support shaft 300. Therefore, during the process of the electric roller 400 carrying or transporting the container, if the container shakes and causes overloading, the self-locking formed when the height position of the swing shaft 220 drops to the height position of the support shaft 300 can be used to limit the electric roller 400 from being completely pressed back into the mounting cavity 110, thus avoiding collision between the container and the base 100.

[0036] Reference Figure 5 and Figure 6 According to some embodiments of the present invention, a pressing block 520 is installed on the output end 511 of the pusher 510. The pressing block 520 is inserted between two lifting rods 540 and is located on the upper side of the lifting shaft 530. The lower side of the pressing block 520 is provided with an inclined surface 521 or a curved surface. When the pusher 510 drives the pressing block 520 to move back and forth, the pressing block 520 pushes the lifting shaft 530 down through the inclined surface 521 or the curved surface. With the above configuration, the pusher 510 can push the lifting shaft 530 down.

[0037] Reference Figures 2 to 4 According to some embodiments of the present invention, a guide seat 600 is installed on the bottom wall of the mounting cavity 110. Guide grooves 610 are provided at both ends of the guide seat 600, and a receiving cavity 620 is provided in the guide seat 600. The receiving cavity 620 is located between the two guide grooves 610 and is connected to the two guide grooves 610 through a clearance hole 630. Two lifting rods 540 are inserted into the two guide grooves 610 one-to-one, and the lifting rods 540 can slide along the corresponding guide grooves 610. The lifting shaft 530 passes through the clearance hole 630 and the receiving cavity 620, and the lower pressure block 520 is inserted into the receiving cavity 620. Thus, the lifting rods 540 can be guided by the guide seat 600, so that the lifting rods 540 can move accurately according to the preset trajectory, ensuring that the swing bracket 200 can swing up and down smoothly.

[0038] Reference Figures 3 to 5According to some embodiments of the present invention, a limiting member 640 is rotatably mounted on the inner wall of the receiving cavity 620, and the upper surface of the lower pressing block 520 is a horizontal plane, abutting against the limiting member 640. Thus, when the lower pressing block 520 pushes the lifting shaft 530 downward, the limiting member 640 can abut against and support the lower pressing block 520, preventing the reaction force of the lifting shaft 530 from bending the lower pressing block 520.

[0039] Reference Figure 3 and Figure 5 According to some embodiments of the present invention, a rolling ring 531 is rotatably fitted onto the lifting shaft 530. The rolling ring 531 is located within the receiving cavity 620, and it abuts against the inclined surface 521 or curved surface of the lower pressure block 520. This arrangement reduces the frictional resistance experienced by the lower pressure block 520 during its forward and backward movement, allowing it to more smoothly complete the task of pushing the lifting shaft 530 downward. Simultaneously, it reduces wear between the lower pressure block 520 and the lifting shaft 530, ensuring service life and operational reliability.

[0040] Reference Figure 3 and Figure 4 According to some embodiments of the present invention, the rolling ring 531 and the inner wall of the receiving cavity 620 can cooperate to abut against and restrict the lifting shaft 530 from moving back and forth relative to the guide seat 600, so as to prevent the lifting shaft 530 from disengaging from the lifting rod 540 due to the back and forth movement of the lifting shaft 530.

[0041] It should be noted that in some other embodiments, the driving device described above may also adopt other configurations. For example, the driving device may include four electric push rods located on the lower side of the swing arm 210, and the four electric push rods are connected one-to-one to the end of the four swing arms 210 away from the support shaft 300. Thus, the swing arm 210 can be directly pushed up and down by the electric push rods.

[0042] Reference Figure 1 According to some embodiments of the present invention, a cover plate 120 is included. The cover plate 120 is located above the support shaft 300. The cover plate 120 is connected to the left and right side walls of the mounting cavity 110. The cover plate 120 abuts against the guide seat 600. Thus, the support shaft 300, pusher 510 and other components can be covered and protected by the cover plate 120, and the strength of the base 100 can be enhanced by the cover plate 120.

[0043] Reference Figure 2 According to some embodiments of the present invention, each swing arm 210 has a clamping member 211 detachably connected to one end away from the support shaft 300. The clamping member 211 is located on the upper side of the swing arm 210, and the clamping member 211 cooperates with the corresponding swing arm 210 to clamp and fix the inner stator of the corresponding electric roller 400. With the above configuration, the electric roller 400 is simple and convenient to assemble and disassemble, facilitating later maintenance and replacement of the electric roller 400.

[0044] Reference Figure 1 The base is equipped with casters 700 located on the outer side of the mounting cavity. Typically, when the friction conveying mechanism is installed in a high-speed rail carriage, the axial direction of the electric rollers 400 is along the width direction of the carriage, and adjacent electric rollers 400 are distributed along the length direction of the carriage. When unloading cargo from the high-speed rail carriage, the container needs to be moved out of the carriage door along the width direction of the carriage. At this time, the electric rollers 400 need to be lowered and stored in the mounting cavity 110, and then the casters 700 are used to support the container.

[0045] 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.

[0046] 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 bottom friction conveying mechanism for high-speed rail freight, characterized in that, include: The base (100) has a mounting cavity (110) with an upper opening. Two swing brackets (200) are located inside the mounting cavity (110). The two swing brackets (200) are rotatably mounted on the inner walls of the left and right sides of the mounting cavity (110) at their close ends and electric rollers (400) are mounted on their far ends. The two electric rollers (400) are arranged side by side. A driving device is disposed within the mounting cavity (110) and located below the two swing brackets (200). The driving device can drive the two swing brackets (200) to swing upward or downward. When the swing brackets (200) swing downward, the swing brackets (200) drive the electric rollers (400) to descend and be housed in the mounting cavity (110). When the swing brackets (200) swing upward, the swing brackets (200) drive the electric rollers (400) to rise and protrude from the mounting cavity (110). The driving device includes a pusher (510), a lifting shaft (530), and two lifting rods (540). The pusher (510) is installed on the bottom wall of the mounting cavity (110). The two lifting rods (540) are rotatably connected to the two swing brackets (200) in a one-to-one correspondence. The two lifting rods (540) are provided with a first mounting hole (541) with the axis along the front-back direction. The two ends of the lifting shaft (530) are inserted into the first mounting hole (541) in a one-to-one correspondence. The lifting rods (540) can slide back and forth along the lifting shaft (530). An elastic support (550) is provided between the two swing brackets (200) at their opposite ends and the base (100). The elastic support (550) is used to drive the corresponding swing bracket (200) to swing upward and reset. The pusher (510) can push the lifting shaft (530) downward. A support shaft (300) is connected between the inner walls of the left and right sides of the mounting cavity (110). The support shaft (300) is located in the middle of the mounting cavity (110). Each swing bracket (200) includes two swing arms (210) and a swing shaft (220). The two swing arms (210) are arranged at intervals in the left and right direction. One end of the two swing arms (210) is rotatably connected to the support shaft (300), and the other end of the two swing arms (210) is connected to the corresponding electric roller (400). The elastic support (550) is located between the other end of the swing arm (210) and the base (100). The swing shaft (220) is connected to the two corresponding swing arms (210). The swing shaft (220) is located between the corresponding electric roller (400) and the support shaft (300). The upper ends of the two lifting rods (540) are provided with second mounting holes (542). The two swing shafts (220) are correspondingly inserted into the two second mounting holes (542). A pressing block (520) is installed on the output end (511) of the pusher (510). The pressing block (520) is inserted between the two lifting rods (540). The pressing block (520) is located on the upper side of the lifting shaft (530). The lower side of the pressing block (520) is provided with an inclined surface (521) or a curved surface. When the pusher (510) drives the pressing block (520) to move back and forth, the pressing block (520) pushes the lifting shaft (530) down through the inclined surface (521) or the curved surface. A guide seat (600) is installed on the bottom wall of the mounting cavity (110). Guide grooves (610) are provided at both ends of the guide seat (600). A receiving cavity (620) is provided in the guide seat (600). The receiving cavity (620) is located between the two guide grooves (610). The receiving cavity (620) is connected to the two guide grooves (610) through a clearance hole (630). Two lifting rods (540) are inserted into the two guide grooves (610) one by one. The lifting rods (540) can slide along the corresponding guide grooves (610). The lifting shaft (530) passes through the clearance hole (630) and the receiving cavity (620). The lower pressure block (520) is inserted into the receiving cavity (620).

2. The high-speed rail freight bottom friction conveying mechanism according to claim 1, characterized in that, The inner wall of the receiving cavity (620) is rotatably mounted with a limiting member (640), the upper surface of the lower pressing block (520) is a horizontal plane, and the upper surface of the lower pressing block (520) abuts against the limiting member (640).

3. The high-speed rail freight bottom friction conveying mechanism according to claim 1, characterized in that, The lifting shaft (530) is rotatably fitted with a rolling ring (531), which is located in the receiving cavity (620). The rolling ring (531) abuts against the inclined surface (521) or the curved surface of the lower pressing block (520).

4. The high-speed rail freight bottom friction conveying mechanism according to claim 3, characterized in that, The rolling ring (531) and the inner wall of the receiving cavity (620) can cooperate to abut and restrict the lifting shaft (530) from moving back and forth relative to the guide seat (600).

5. The high-speed rail freight bottom friction conveying mechanism according to claim 1, characterized in that, Includes a cover plate (120), which is located above the support shaft (300). The cover plate (120) is connected to the left and right side walls of the mounting cavity (110) and abuts against the guide seat (600).

6. The high-speed rail freight bottom friction conveying mechanism according to claim 1, characterized in that, Each swing arm (210) has a clamping member (211) detachably connected to one end away from the support shaft (300). The clamping member (211) is located on the upper side of the swing arm (210). The clamping member (211) cooperates with the corresponding swing arm (210) to clamp and fix the inner stator of the corresponding electric roller (400).

Images