Transfer trolley
The bogie's clamping mechanism on the transfer car uses a drive unit to control the state switching of the clamping component, which solves the problem of the bogie continuing to move under inertia, achieves precise positioning and efficient transfer of the bogie, avoids collisions, and has a compact structure and low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC ZHUZHOU ROLLING CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-12
AI Technical Summary
When the existing transport vehicle pushes the bogie to the target position, it is easy for it to continue moving due to inertia, making it difficult to accurately hit the target position and potentially causing a collision with other bogies.
The device employs a clamping mechanism, which includes a drive unit and a shaft clamping mechanism. The shaft clamping mechanism consists of two clamping parts. The drive unit switches between a clamping state and a waiting state via its telescopic part. In the clamping state, the second end of the clamping part approaches and clamps the wheel axle of the bogie, and in the waiting state, it moves away, thereby achieving the fixation and movement of the bogie.
It achieves precise transfer of bogies, avoids collisions with other bogies, improves transfer efficiency, and arranges a compact structure in a limited space, reducing manufacturing difficulty and cost.
Smart Images
Figure CN224225184U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of bogie transfer technology, specifically relating to a transfer vehicle. Background Technology
[0002] Automated Guided Vehicles (AGVs) are a type of mobile robot and an important piece of equipment in the logistics systems of modern manufacturing enterprises. They are mainly used for storing and transporting various materials, providing an important guarantee for the flexibility, integration, and efficient operation of the system. They are usually powered by batteries and equipped with non-contact guidance devices. With the assistance of computer control and guidance devices, they can accurately reach their destination.
[0003] Existing AGV vehicles used for pushing items can also be called transfer vehicles. For example, in the field of rail transit, transfer vehicles used for pushing track equipment (such as bogies) are usually equipped with a pusher arm. The pusher arm can be lowered or raised. When the pusher arm is lowered, the vehicle can move freely. When the pusher arm is raised, it can press against the axle of the bogie and drive the bogie to move. However, when such a transfer vehicle pushes the bogie to the target position, it is easy for it to continue moving under the action of inertia, making it difficult to hit the target position. Summary of the Invention
[0004] To address the technical problem of poor target positioning accuracy in bogie transfer, this application provides a transfer vehicle.
[0005] This application provides a transfer vehicle for transferring bogies, including a vehicle body and a clamping device; the clamping device includes:
[0006] A drive unit is installed on the vehicle body and is provided with a telescopic part that extends and retracts along the length direction of the vehicle body;
[0007] The axle clamping mechanism includes a roller and two clamping members. Each clamping member has a first end and a second end. The two clamping members are hinged at the middle. The first end of one of the clamping members is hinged to the telescopic part of the drive member, and the first end of the other clamping member is hinged to the vehicle body. The roller is rotatably mounted on the second end of the clamping member.
[0008] The axle-holding mechanism switches between a holding state and a waiting state under the action of the driving member. When the axle-holding mechanism is in the holding state, the second ends of the two holding members move closer to each other so that the two rollers hold the axle of the bogie. When the axle-holding mechanism is in the waiting state, the second ends of the two holding members move further apart from each other and are lower than the axle.
[0009] In some embodiments, the drive member and the axle clamping mechanism at least partially overlap along the length of the vehicle body.
[0010] In some embodiments, the two clamping members are a first frame and a second frame, the telescopic part of the drive member is hinged to the lower crossbar in the first frame, and the roller is rotatably mounted on the upper crossbar in the first frame and the second frame.
[0011] The second frame has an opening to avoid the drive member.
[0012] In some embodiments, the driving component is an electric cylinder, which includes a cylinder body and a rotary motor that are connected in a transmission manner;
[0013] Along the length of the vehicle body, the axle clamping mechanism and the rotary motor are arranged in sequence.
[0014] In some embodiments, the cylinder and the motor are arranged sequentially along the width direction of the vehicle body.
[0015] In some embodiments, the first frame and the second frame are the same size along the width direction of the vehicle body.
[0016] In some embodiments, the vehicle body is provided with a clearance hole for avoiding the drive component, and the clearance hole is provided through the height direction.
[0017] In some embodiments, the vehicle body is provided with a first mounting seat and a second mounting seat, both of which are located on the wall of the clearance hole, and the drive component is mounted on the first mounting seat and the second mounting seat.
[0018] In some embodiments, the clamping device further includes a guiding mechanism, which includes two guide frames spaced apart along the width direction of the vehicle body, and the guide frames are provided with guide channels extending along the length direction of the vehicle body;
[0019] The lower crossbar in the first frame slides within the guide channel, and when the bearing mechanism is in the waiting state, the telescopic part is located between the two guide frames.
[0020] In some embodiments, the guide frame includes an upper plate, a lower plate, and two limiting plates. The upper plate is connected to the two limiting plates on both sides along the length of the vehicle body. The two limiting plates are connected to the vehicle body and / or the lower plate. The lower plate is connected to the vehicle body. The upper plate, the lower plate, and the two limiting plates together form the guide channel.
[0021] The transfer vehicle provided according to an embodiment of this application includes a vehicle body and a clamping device. The clamping device includes a drive member and a shaft-holding mechanism. The drive member is mounted on the vehicle body and has a telescopic part that extends and retracts along the length direction of the vehicle body; the shaft-holding mechanism includes a roller and two clamping members, each clamping member having a first end and a second end, the two clamping members being hinged at the middle, the first end of one of the clamping members being hinged to the telescopic part of the drive member, the first end of the other clamping member being hinged to the vehicle body, and the second end of the clamping member being rotatably mounted with a roller.
[0022] Because the axle-clamping mechanism switches between a clamping state and a waiting state under the action of the drive component, when the axle-clamping mechanism is in the clamping state, the second ends of the two clamping members move closer to each other so that the two rollers clamp the same axle of the bogie, allowing the bogie to move to the target position with the transfer car. When the axle-clamping mechanism is in the waiting state, the second ends of the two clamping members move further apart and are lower than the axle, allowing the transfer car to move freely without interfering with the bogie.
[0023] Because the two clamping components of the axle-clamping mechanism are lever-type clamps, the second ends of the two clamping components can grip the radial sides of the same axle, thus fixing the bogie to the transfer car. When the axle-clamping mechanism is in the clamped state, the two will not move relative to each other regardless of whether the transfer car is moving, decelerating, or accelerating. Therefore, the bogie can be transferred simply by controlling the movement of the transfer car. The moment the transfer car stops, the bogie is constrained by the axle-clamping mechanism and will not continue moving forward due to inertia, thus achieving precise control of the bogie's target position during transfer. The axle-clamping mechanism is a lever-type clamp, which allows for convenient switching between the clamped and waiting states, resulting in high transfer efficiency. Attached Figure Description
[0024] Figure 1 A schematic diagram of the transfer vehicle of this application in a clamped state is shown.
[0025] Figure 2 It shows Figure 1 The front view of the transfer vehicle.
[0026] Figure 3 It shows Figure 2 The left view.
[0027] Figure 4 It shows Figure 2 A schematic diagram of the structure of the transfer vehicle and its wheel axle.
[0028] Figure 5 It shows Figure 4 The right view.
[0029] Figure 6 It shows Figure 1 A top-down view of the transfer vehicle in a waiting state.
[0030] Figure 7 It shows Figure 6 The front view of the transfer vehicle.
[0031] Figure 8 It shows Figure 6 The right view.
[0032] Explanation of reference numerals in the attached figures:
[0033] 100-Car body, 111-Avoidance hole, 112-First mounting seat, 113-Second mounting seat; 210-Drive component, 211-Cylinder body, 2111-Telescopic part, 2112-Fixing part, 212-Rotary motor; 220-Shaft clamping mechanism, 221-Clamping component, 221a-First frame, 221b-Second frame, 2211-Horizontal bar, 2212-Vertical bar, 222-Roller, 223-Roller; 230-Guide mechanism, 231-Guide frame, 2311-Upper plate, 2312-Lower plate, 2313-Limiting plate, 2314-Guide channel; 200-Axle. Detailed Implementation
[0034] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0035] In related technologies, the transfer vehicle is equipped with a push arm that can stand upright and lie down. When the push arm is upright, it can press against one side of the wheel axle along the length of the vehicle body, thereby driving the bogie to move. However, after reaching the target position, the transfer vehicle stops, and the bogie will continue to move forward under the action of inertia, which may cause it to collide with other bogies.
[0036] According to a first aspect of this application, a transfer vehicle is provided, wherein the axle-holding mechanism has a small dimension in the height direction and can achieve the accuracy of the bogie reaching the target position, thereby avoiding collisions with other bogies.
[0037] This application is described below with reference to the accompanying drawings and specific embodiments:
[0038] Please see Figure 1 as well as Figure 6The transfer vehicle provided in this embodiment includes a vehicle body 100 and a clamping device. The clamping device includes a drive member 210 and a shaft-holding mechanism 220. The drive member 210 is mounted on the vehicle body 100 and has a telescopic part 2111 that extends and retracts along the length of the vehicle body 100. The drive member 210 can be a telescopic cylinder, such as an electric cylinder or a pneumatic cylinder, or a linear drive mechanism, such as a ball screw mechanism. The shaft-holding mechanism 220 includes a roller 222 and two clamping members 221. Each clamping member 221 has a first end and a second end. The two clamping members 221 are hinged at the middle. The first end of one of the clamping members 221 is hinged to the telescopic part 2111 of the drive member 210, and the first end of the other clamping member 221 is hinged to the vehicle body 100. The second end of the clamping member 221 is rotatably mounted with the roller 222.
[0039] The axle clamping mechanism 220 switches between a clamping state and a waiting state under the action of the drive member 210. When the axle clamping mechanism 220 is in the clamping state, the second ends of the two clamping members 221 move closer to each other so that the two rollers 222 clamp the wheel axle 200 of the bogie. When the axle clamping mechanism 220 is in the waiting state, the second ends of the two clamping members 221 move further apart from each other and are lower than the wheel axle 200.
[0040] When the axle clamping mechanism 220 is in a waiting state, the second ends of the two clamping members 221 are far apart from each other. The clamping members 221 lie on the car body 100 and are lower than the wheel axle 200. The axle clamping mechanism 220 has a small dimension in the height direction, so it can move freely without interfering with the bogie, thus meeting the requirement that the distance between the wheel axle 200 of the bogie and the upper surface of the car body 100 is only 100mm to 150mm.
[0041] When the axle clamping mechanism 220 is in the clamping state, the second ends of the two clamping members 221 approach each other, the clamping members 221 stand upright on the car body 100 and cooperate with the wheel axle 200 of the bogie, so the bogie can be pushed to move together during the movement of the transfer car; since the size and shape of the wheel axle 200 of the bogie are relatively fixed, the axle clamping mechanism 220 cooperates with the wheel axle 200 to push the bogie, which can reduce the precision requirements of the axle clamping mechanism 220.
[0042] Two clamping parts 221 form a scissor clamp that can grip the same axle 200, thus fixing the transfer car to the bogie. The bogie can move with the transfer car and stop when the transfer car stops, allowing the bogie to be precisely delivered to its destination. Generally, there are many bogies at the target location, arranged sequentially along the transfer direction. When the transfer car reaches its destination and stops, the bogies fixed on it also remain stationary, preventing collisions with other bogies.
[0043] The axle-holding mechanism 220 serves as a structure for holding the wheel axle 200 of the bogie. In some embodiments, please refer to [reference needed]. Figure 6 Along the length of the vehicle body 100, the drive member 210 and the axle-holding mechanism 220 at least partially overlap. This arrangement ensures that the axle-holding mechanism 220 can switch between a holding state and a waiting state while reducing the length of the vehicle body 100, allowing for more structures to be arranged in a limited space, resulting in a more compact design. In other embodiments, the drive member 210 and the axle-holding mechanism 220 are arranged sequentially along the length of the vehicle body 100, still achieving the switching between the holding state and the waiting state of the axle-holding mechanism 220.
[0044] In some embodiments, the two retaining members 221 can be a first frame 221a and a second frame 221b, respectively. The frame structure can improve the strength of the retaining member 221 itself. In other embodiments, the retaining member 221 can also be a retaining block or a retaining frame, etc., which is not limited in this application.
[0045] Both the first frame 221a and the second frame 221b include two longitudinal bars 2212. (See below) Figure 3 The first frame 221a includes two crossbars 2211, which, along with two vertical bars 2212, are connected to form a rectangular frame. One crossbar 2211 is located at the top, and the other crossbar 2211 is located at the bottom. The telescopic portion 2111 of the drive member 210 is hinged to the lower crossbar 2211 in the first frame 221a. The first frame 221a provides a hinged structure between the lower crossbar 2211 and the telescopic portion 2111. Alternatively, at least one vertical bar 2212 of the first frame 221a can be hinged to the telescopic portion 2111, which also enables the clamping mechanism 220 to switch between a clamping state and a waiting state.
[0046] The second frame 221b has an opening. It can be formed by removing the lower crossbar 2211 from the first frame 221a, with the upper crossbar 2211 and two vertical bars 2212 forming the second frame 221b with the opening. Since the drive member 210 and the axle-holding mechanism 220 overlap at least partially along the length of the vehicle body 100, they may interfere with each other. The opening in the second frame 221b avoids the drive member 210, thus ensuring that there is no interference between the drive member 210 and the second frame 221b, and also ensuring a smaller size along the length of the vehicle body 100.
[0047] The upper crossbar 2211 in the first frame 221a and the second frame 221b constitutes the second end, on which a roller 222 that rolls with the wheel axle 200 of the bogie is rotatably mounted. The lower crossbar 2211 in the first frame 221a constitutes the first end, and the lower ends of the two longitudinal bars 2212 in the second frame 221b constitute the first end.
[0048] In some embodiments, the first frame 221a and the second frame 221b have the same dimensions, that is, the horizontal bars 2211 of the first frame 221a and the horizontal bars 2211 of the second frame 221b have the same length, the vertical bars 2212 of the first frame 221a and the vertical bars 2212 of the second frame 221b have the same length, the two vertical bars 2212 of the first frame 221a have the same length, and the two vertical bars 2212 of the second frame 221b have the same length. One of the vertical bars 2212 of the first frame 221a is hinged to one of the vertical bars 2212 of the second frame 221b at the middle, and the other vertical bar 2212 of the first frame 221a is hinged to the other vertical bar 2212 of the second frame 221b at the middle.
[0049] The first frame 221a and the second frame 221b have the same dimensions. The first frame 221a only needs to add a crossbar 2211 on the basis of the second frame 221b, which improves the ease of manufacturing and reduces the manufacturing difficulty.
[0050] The driving component 210 serves as the driving force for the bearing mechanism 220. In some embodiments, the driving component 210 can be a telescopic component or a linear motion mechanism, such as a ball screw mechanism.
[0051] In some embodiments, the drive unit 210 can be an electric cylinder, the power of which comes from a rotary motor 212. Therefore, the electric cylinder includes a cylinder body 211 and a rotary motor 212 connected by a transmission. Please refer to [link to relevant documentation]. Figure 6 Along the width of the vehicle body 100, the cylinder body 211 and the motor are arranged in sequence, thus realizing the arrangement of each structure of the electric cylinder, which occupies little space and has a compact structure.
[0052] Please see Figure 6 Along the length of the vehicle body 100, the rotary motor 212 and the axle clamping mechanism 220 are arranged sequentially. Since the length of the electric cylinder is larger than the dimension of the axle clamping mechanism 220 along the length of the vehicle body 100, after installing the electric cylinder, the vehicle body 100 will inevitably leave space on one side of the axle clamping mechanism 220 along the length of the vehicle body. This space is used to arrange the rotary motor 212 of the electric cylinder. The layout is reasonable and improves the space utilization rate.
[0053] The clamping device may also include a guide mechanism 230 to ensure the stability of the telescopic part 2111 as it moves the lower crossbar 2211 of the first frame 221a along the length of the vehicle body 100.
[0054] In some embodiments, please refer to Figure 4 as well as Figure 6The guiding mechanism 230 may include two guide frames 231 spaced apart along the width direction of the vehicle body 100. Each guide frame 231 has a guide channel 2314 extending along the length direction of the vehicle body 100. The lower crossbar 2211 of the first frame 221a is slidably engaged within the guide channel 2314, thereby ensuring the stability of the first end of the first frame 221a moving along the length direction of the vehicle body 100. In other embodiments, the guide channel 2314 may also be mounted on the vehicle body 100, with the crossbar 2211 of the first frame 221a slidably engaged within the guide channel 2314, which also ensures the stability of the first end of the first frame 221a moving along the length direction of the vehicle body 100.
[0055] When the axle clamping mechanism 220 is in a waiting state, the telescopic part 2111 can be located between the two guide frames 231, and the two ends of the transverse axis of the first frame 221a are respectively set in the two guide channels 2314, which provides good stability. When the axle clamping mechanism 220 is in a clamping state, the telescopic part 2111 and the guide frame 231 are arranged sequentially along the length of the vehicle body 100.
[0056] Please see Figure 4 The guide frame 231 includes an upper plate 2311, a lower plate 2312, and two limiting plates 2313. The upper plate 2311 is connected to the two limiting plates 2313 on both sides along the length of the vehicle body 100. The two limiting plates 2313 are connected to the vehicle body 100 and / or the lower plate 2312. The lower plate 2312 is connected to the vehicle body 100. The upper plate 2311, lower plate 2312, and two limiting plates 2313 together form a guide channel 2314, providing a guide structure for the stable operation of the crossbar 2211 below the first frame 221a along the length of the vehicle body 100. In other embodiments, the guide frame 231 can also be a guide block with guide grooves. The two ends of the crossbar 2211 below the first frame 221a pass through the openings of the two guide grooves and extend into the corresponding guide grooves, which also enables the stable operation of the crossbar 2211 below the first frame 221a along the length of the vehicle body 100.
[0057] Please see Figure 1 The crossbar 2211 below the first frame 221a is equipped with rotatable rollers 223. The number of rollers 223 is the same as the number of guide frames 231, and they correspond one-to-one. The rollers 223 are rolled within the corresponding guide channels 2314 to reduce the friction between the crossbar 2211 below the first frame 221a and the upper plate 2311 and lower plate 2312 during the movement of the crossbar 2211 below the first frame 221a along the length of the vehicle body 100, thereby reducing the wear of the guide frames 231 and the crossbar 2211 below the first frame 221a and improving the service life of the guide frames 231 and the first frame 221a. The upper plate 2311 and the lower plate 2312 can be made of wear-resistant materials as wear plates.
[0058] The vehicle body 100 serves as the main structure of the transfer vehicle, and it is equipped with traveling wheels and a power mechanism that drives the traveling wheels to move. It also serves as the mounting base for the axle clamping mechanism 220 and the drive component 210.
[0059] In some embodiments, the vehicle body 100 is provided with a clearance hole 111 for avoiding the drive component 210, and the clearance hole 111 is arranged through the height direction. Since the distance between the bogie axle 200 and the ground is very small, the height space is limited, and there may not be enough space to install the drive component 210 directly on the top surface of the vehicle body 100. By providing a clearance hole 111 on the vehicle body 100, the drive component 210 can be recessed into the vehicle body 100 at the bottom and protrude from the vehicle body 100 at the top, realizing the installation arrangement of the drive component 210 in a small space; and at a low cost. In other embodiments, the drive component 210 can be selected with a small size and sufficient power structure to realize the installation arrangement of the drive component 210 in a small space, but such products are generally expensive, which will increase the cost. In some embodiments, the clearance hole 111 can be L-shaped to match the shape of the electric cylinder.
[0060] In some embodiments, the vehicle body 100 is provided with a first mounting seat 112 and a second mounting seat 113. Both the first mounting seat 112 and the second mounting seat 113 are located on the wall of the clearance hole 111. The drive member 210 is mounted on the first mounting seat 112 and the second mounting seat 113 to fix the drive member 210. The electric cylinder includes a fixed part 2112 and a telescopic part 2111. The telescopic part 2111 can extend and retract relative to the fixed part 2112. In specific implementations, the two ends of the fixed part 2112 of the electric cylinder can be connected to the first mounting seat 112 and the second mounting seat 113 respectively. The rotary motor 212 is fixed to the second mounting seat 113, and the telescopic part 2111 of the electric cylinder is freely disposed above the vehicle body 100.
[0061] The working process of the transfer vehicle provided in this application is as follows:
[0062] The axle-holding mechanism 220 of the transfer vehicle is in a waiting state and moves to the bottom of the bogie to be transferred. The electric cylinder retracts, causing the crossbar 2211 under the first frame 221a to move toward the opening of the second frame 221b. The first ends of the two holding members 221 approach each other, and the second ends also approach each other. The two rollers 222 are in contact with the outer circumferential surface of the wheel axle 200 (see...). Figure 4 as well as Figure 5The axle-holding mechanism 220 switches from a waiting state to a holding state, fixing the bogie to the transfer car. The transfer car moves under its own power, driving the bogie to the target position. When the transfer car stops moving, the bogie also stops moving, achieving precise target positioning. The electric cylinder extends, moving the crossbar 2211 below the first frame 221a towards the opening of the second frame 221b. The first ends and second ends of the two holding members 221 move away from each other, and the axle-holding mechanism 220 switches from a holding state to a waiting state (see...). Figure 7 as well as Figure 8 Furthermore, the height of the axle-holding mechanism 220 is lower than that of the wheel axle 200, the transfer car separates from the bogie, and the transfer car moves to transfer the next bogie.
[0063] The transfer vehicle provided in this application has at least the following advantages:
[0064] (1) Since the two clamping parts 221 of the clamping mechanism 220 are lever-type clamps, the second ends of the two clamping parts 221 can clamp the radial sides of the same wheel axle 200, thus fixing the bogie and the transfer car. When the clamping mechanism 220 is in the clamping state, the two will not move relative to each other regardless of whether the transfer car is moving, decelerating or accelerating. Therefore, the transfer of the bogie can be achieved by controlling the movement of the transfer car. At the moment the transfer car stops, the bogie is constrained by the clamping mechanism 220 and will not continue to move forward due to inertia and collide with other bogies, thus achieving precise control of the target position of the bogie transfer.
[0065] (2) The scissor-type axle clamping mechanism 220 is adopted, which occupies little space in the height direction, meeting the requirement of limited space under the bogie; and it is convenient to switch between clamping state and waiting state, with high transfer efficiency.
[0066] (3) The rotary motor 212 of the electric cylinder is located on one side of the bearing mechanism 220 along the length of the vehicle body 100. Along the length of the vehicle body 100, part of the fixing part 2112 of the electric cylinder body 211 overlaps with the bearing mechanism 220. The structure is compact and occupies little space.
[0067] (4) An obstacle clearance hole 111 is provided on the car body 100, which can install electric cylinders with a relatively large height. The cost is low, but it can meet the requirement of limited space under the bogie.
[0068] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 limitations on this application.
[0070] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0071] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0072] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A transfer vehicle for transferring bogies, characterized in that, The transfer vehicle includes a vehicle body and a clamping device; the clamping device includes: A drive unit is installed on the vehicle body and is provided with a telescopic part that extends and retracts along the length direction of the vehicle body; The axle clamping mechanism includes a roller and two clamping members, each clamping member having a first end and a second end. The two clamping members are hinged at the middle. The first end of one of the clamping members is hinged to the telescopic part of the drive member, and the first end of the other clamping member is hinged to the vehicle body. The second end of the clamping member is equipped with the rotatable roller. The axle-holding mechanism switches between a holding state and a waiting state under the action of the driving member. When the axle-holding mechanism is in the holding state, the second ends of the two holding members move closer to each other so that the two rollers hold the axle of the bogie. When the axle-holding mechanism is in the waiting state, the second ends of the two holding members move further apart from each other and are lower than the axle.
2. The transfer vehicle according to claim 1, characterized in that, Along the length of the vehicle body, the drive component and the axle clamping mechanism at least partially overlap.
3. The transfer vehicle according to claim 2, characterized in that, The two clamping components are a first frame and a second frame, respectively. The telescopic part of the driving component is hinged to the lower crossbar in the first frame. The upper crossbar in the first frame is equipped with a rotatable roller. The upper crossbar in the second frame is equipped with a rotatable roller. The second frame has an opening to avoid the drive member.
4. The transfer vehicle according to claim 3, characterized in that, The driving component is an electric cylinder, which includes a cylinder body connected by a transmission and a rotary motor. Along the length of the vehicle body, the axle clamping mechanism and the rotary motor are arranged in sequence.
5. The transfer vehicle according to claim 4, characterized in that, Along the width direction of the vehicle body, the cylinder and the motor are arranged sequentially.
6. The transfer vehicle according to claim 3, characterized in that, The first frame and the second frame have the same length of horizontal bars, and the first frame and the second frame have the same length of vertical bars.
7. The transfer vehicle according to any one of claims 1-6, characterized in that, The vehicle body is provided with a clearance hole to avoid the drive component.
8. The transfer vehicle according to claim 7, characterized in that, The vehicle body is provided with a first mounting seat and a second mounting seat, both of which are located on the wall of the clearance hole. The drive component is connected to the first mounting seat and the second mounting seat.
9. The transfer vehicle according to any one of claims 3-6, characterized in that, The clamping device further includes a guiding mechanism, which includes two guide frames spaced apart along the width direction of the vehicle body, and the guide frames are provided with guide channels extending along the length direction of the vehicle body; The lower crossbar in the first frame slides within the guide channel, and when the bearing mechanism is in the waiting state, the telescopic part is located between the two guide frames.
10. The transfer vehicle according to claim 9, characterized in that, The guide frame includes an upper plate, a lower plate, and two limiting plates. The upper plate is connected to the two limiting plates on both sides along the length of the vehicle body. The two limiting plates are connected to the vehicle body and / or the lower plate. The lower plate is connected to the vehicle body. The upper plate, the lower plate, and the two limiting plates together form the guide channel.