Connecting device for a track test vehicle and track test vehicle

Abstract

The present application relates to rail transit technical field, disclose a kind of connecting device and rail test car for rail test car.The device includes main frame, pivot, connecting hook, connecting ring, locking unit, pull rope, drive unit, take-up reel and torsion applying unit, main frame includes multiple pad, first side plate and second side plate, multiple pad is evenly arranged between first side plate and second side plate and is connected with first side plate and second side plate;Connecting hook is arranged between first side plate and second side plate by pivot;Connecting ring is arranged on rail test car, and connecting hook is matched with connecting ring to realize connection and separation;Torsion applying unit is arranged on pivot, and one end is connected with connecting hook, the other end is connected with first side plate, and torsion applying unit is used to exert torsion on connecting hook;Pull rope is connected with locking unit, drive unit is arranged on second side plate, take-up reel one end is connected with drive unit, the other end is connected with pull rope.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a connecting device for a rail test vehicle and the rail test vehicle itself. Background Technology

[0002] In the development of maglev rail transit equipment, extensive test runs of experimental vehicles are typically required to fully validate the new technology. In scenarios such as the test vehicle entering or leaving the depot without power, or encountering a malfunction and becoming unable to move during a test run, a powered traction vehicle is needed to provide traction assistance. The two are connected via a coupler. The coupler is a vehicle component used to reliably connect vehicles, transmit traction and impact forces, and maintain a certain distance between vehicles. There are various types of couplers, such as No. 2 coupler, No. 3 coupler, 200 km / h coupler, and bar coupler.

[0003] Existing couplers are mostly used in train formation operations. To cope with relatively harsh load conditions and with a large safety margin, they are usually quite complex, heavy, and costly. The test vehicle is small in size and has high requirements for vehicle lightweighting. If existing couplers are used, it will significantly affect the center of gravity of the test vehicle, increasing the development difficulty. Therefore, the existing coupler connection device is not suitable for the track test vehicle. Summary of the Invention

[0004] This invention provides a connecting device for a track test vehicle and a track test vehicle, which can solve the technical problems in the prior art.

[0005] This invention provides a connecting device for a track test vehicle, wherein the device includes a main frame, a rotating shaft, a connecting hook, a connecting ring, a locking unit, a pull rope, a drive unit, a take-up reel, and a torque application unit, wherein...

[0006] The main frame includes multiple pads, a first side plate, and a second side plate. The multiple pads are evenly arranged between the first side plate and the second side plate and are connected to the first side plate and the second side plate.

[0007] The connecting hook is disposed between the first side plate and the second side plate via the pivot.

[0008] The connecting ring is mounted on the track test vehicle, and the connecting hook cooperates with the connecting ring to achieve connection and separation.

[0009] The torque application unit is disposed on the rotating shaft, with one end connected to the connecting hook and the other end connected to the first side plate. The torque application unit is used to apply torque to the connecting hook.

[0010] The pull cord is connected to the locking unit, the drive unit is mounted on the second side plate, one end of the take-up reel is connected to the drive unit, and the other end is connected to the pull cord. When the connecting hook is connected to the connecting ring, the connecting hook overcomes the torque and rotates around the pivot until it engages with the connecting ring to achieve connection, and the locking unit locks the connecting hook. When the connecting hook is separated from the connecting ring, the drive unit drives the take-up reel to rotate so that the locking unit unlocks the connecting hook under the pull of the pull cord. The connecting hook rotates around the pivot under the combined action of torque and the interaction force with the connecting ring until it leaves the connecting ring to achieve separation.

[0011] Preferably, the device further includes an elastic reset unit and a limiting frame. The limiting frame is disposed between and connected to the first side plate and the second side plate. The limiting frame includes an open end and a closed end. The locking unit is disposed at the open end of the limiting frame. The elastic reset unit is disposed between the closed end of the limiting frame and the locking unit. The elastic reset unit is used to make the locking unit fit tightly against the connecting hook under the action of elastic force when the connecting hook is in a disengaged state, and to lock the connecting hook under the action of elastic force when the connecting hook is in a connected state.

[0012] Preferably, the device further includes a first power vehicle connector, a second power vehicle connector, a gasket, and a first buffer pad. The first buffer pad is disposed between the flange of the first side plate and the gasket, and between the flange of the second side plate and the gasket. The first power vehicle connector passes through the gasket, the first buffer pad, and the flange of the first side plate in sequence to connect with the power vehicle. The second power vehicle connector passes through the gasket, the first buffer pad, and the flange of the second side plate in sequence to connect with the power vehicle.

[0013] Preferably, the device further includes a second buffer pad, which is disposed between the flange of the first side plate and the power vehicle, and between the flange of the second side plate and the power vehicle.

[0014] Preferably, a monitoring hole is provided on the first side plate.

[0015] Preferably, the locking unit is a locking pin, and the connecting hook is provided with a locking hole. The locking pin enters the locking hole under the action of elastic force to lock the connecting hook, and the locking pin is pulled out from the locking hole under the action of pulling force to unlock the connecting hook.

[0016] Preferably, the torque application unit is a torsion spring, and the pull rope is a steel wire rope.

[0017] Preferably, the drive unit is an actuation servo motor.

[0018] Preferably, the elastic reset unit is a reset spring.

[0019] The present invention also provides a track test vehicle, which includes the above-described connecting device for the track test vehicle.

[0020] The above technical solution provides a connection device suitable for track test vehicles with high requirements for vehicle lightweighting. This connection device can realize a safe and reliable connection between the track test vehicle and the power vehicle, and has the characteristics of small weight, low cost, simple structure, convenient operation, and safety and reliability. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] Figure 1 An exploded view of a connection device for a track test vehicle according to an embodiment of the present invention is shown;

[0023] Figure 2 A perspective view of a connection device for a track test vehicle according to an embodiment of the present invention is shown;

[0024] Figure 3 A schematic diagram is shown of a connecting hook of a connecting device for a track test vehicle according to an embodiment of the present invention in a locked state;

[0025] Figure 4 A schematic diagram is shown of a connecting hook of a connecting device for a track test vehicle according to an embodiment of the present invention in a ready-to-be-attached state. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention 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 the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] Figure 1 An exploded view of a connection device for a track test vehicle according to an embodiment of the present invention is shown.

[0030] like Figure 1-4 As shown, this embodiment of the invention provides a connecting device for a track test vehicle, wherein the device includes a main frame, a rotating shaft 2, a connecting hook 3, a connecting ring 4, a locking unit 5, a pull rope 8, a drive unit 9, a take-up reel 10, and a torque application unit 11, wherein...

[0031] The main frame includes multiple pad blocks 1, a first side plate 12 and a second side plate 13. The multiple pad blocks 1 are evenly arranged between the first side plate 12 and the second side plate 13 and are connected to the first side plate 12 and the second side plate 13.

[0032] The connecting hook 3 is disposed between the first side plate 12 and the second side plate 13 via the rotating shaft 2;

[0033] The connecting ring 4 is mounted on the track test vehicle (for example, the connecting ring 4 is mounted on the track test vehicle and connected to the load-bearing structure on the vehicle), and the connecting hook 2 cooperates with the connecting ring 4 to achieve connection and separation;

[0034] The torque application unit 11 is disposed on the rotating shaft 2, and one end is connected to the connecting hook 3, and the other end is connected to the first side plate 12. The torque application unit 11 is used to apply torque to the connecting hook 3.

[0035] The pull cord 8 is connected to the locking unit 5. The drive unit 9 is mounted on the second side plate 13. One end of the take-up reel 10 is connected to the drive unit 9, and the other end is connected to the pull cord 8. When the connecting hook 3 is connected to the connecting ring 4, the connecting hook 3 overcomes the torque and rotates around the rotating shaft 2 until it engages with the connecting ring 4 to achieve connection. The connecting hook 3 is then locked by the locking unit 5. When the connecting hook 3 is separated from the connecting ring 4, the drive unit 9 drives the take-up reel 10 to rotate so that the locking unit 5 unlocks the connecting hook 3 under the pulling force of the pull cord 8. The connecting hook 3 rotates around the rotating shaft 2 under the combined action of torque and the interaction force with the connecting ring 4 until it leaves the connecting ring 4 to achieve separation.

[0036] The torque applied by the torque application unit 11 to the connecting hook 3 can also keep the connecting hook 3 in the open state (i.e., the separated state) after it is unlocked.

[0037] The above technical solution provides a connection device suitable for track test vehicles with high requirements for vehicle lightweighting. This connection device can realize a safe and reliable connection between the track test vehicle and the power vehicle, and has the characteristics of small weight, low cost, simple structure, convenient operation, and safety and reliability.

[0038] For example, the number of spacers can be 5, such as... Figure 1 As shown. The pad can be fixedly connected to the first side plate 12 and the second side plate 13 by bolts, for example, and the drive unit can be fixedly connected to the second side plate 13 by bolts, for example. The shaft hole of the rotating shaft 2 and the connecting hook 3 is a clearance fit, with a clearance range of 0.02 to 0.05 mm, and grease can be applied to the mating surface. The opening of the rotating shaft 2 and the side plate (including the first side plate 12 and the second side plate 13) is a transition fit, with a clearance range of -0.02 to 0.02 mm. The surface roughness of the contact surface between the connecting hook 3 and the connecting ring 4 is Ra = 1.6 μm, and grease can be applied to the contact surface. The connecting hook 3 can be limited by the pad 1 during opening, with a maximum opening angle of 20° ± 1°.

[0039] Those skilled in the art should understand that the descriptions of quantity, size, material and connection method in this invention are merely exemplary and not intended to limit the invention.

[0040] According to one embodiment of the present invention, the device further includes an elastic reset unit 6 and a limiting frame 7. The limiting frame 7 is disposed between and connected to the first side plate 12 and the second side plate 13. The limiting frame 7 includes an open end and a closed end. The locking unit 5 is disposed at the open end of the limiting frame 7. The elastic reset unit 6 is disposed between the closed end of the limiting frame 7 and the locking unit 5. The elastic reset unit 6 is used to make the locking unit 5 fit tightly against the connecting hook 3 under the action of elastic force when the connecting hook 3 is in a separated state, and to lock the connecting hook 3 under the action of elastic force when the connecting hook 3 is in a connected state.

[0041] When the connecting hook 3 is in the separated state, the elastic reset unit 6 causes the locking unit 5 to be tightly pressed against the connecting hook 3 under the action of elastic force, and the locking unit 5 maintains the tendency to extend out of the limiting bracket 7, such as... Figure 4 As shown.

[0042] For example, the limiting frame 7 can be fixedly connected to the first side plate 12 and the second side plate 13 by bolts.

[0043] According to one embodiment of the present invention, the device further includes a first power vehicle connector, a second power vehicle connector, a gasket 14, and a first buffer pad 15. The first buffer pad 15 is disposed between the flange of the first side plate 12 and the gasket 14, and between the flange of the second side plate 13 and the gasket 14. The first power vehicle connector passes through the gasket 14, the first buffer pad 15, and the flange of the first side plate 12 in sequence to connect with the power vehicle. The second power vehicle connector passes through the gasket 14, the first buffer pad 15, and the flange of the second side plate 13 in sequence to connect with the power vehicle.

[0044] The first buffer pad can be used to buffer the connection device described in this invention when it is under tension.

[0045] For example, the gasket can be a metal gasket, and the first power vehicle connector and the second power vehicle connector can be bolts (that is, the connection device described in this invention can be fixedly connected to the power vehicle by the bolts engaging with the threaded interface of the power vehicle).

[0046] According to one embodiment of the present invention, the device further includes a second buffer pad 16, which is disposed between the flange of the first side plate 12 and the power vehicle, and between the flange of the second side plate 13 and the power vehicle.

[0047] The second buffer pad can be used to buffer the connection device described in this invention when it is under pressure.

[0048] For example, the thickness of the first and second cushioning pads can be 4mm, and the material can be metal rubber to ensure that the cushioning performance remains stable.

[0049] According to one embodiment of the present invention, a monitoring hole is provided on the first side plate 12.

[0050] By setting a monitoring hole, the internal operating status of the connected device can be monitored, and in the event of a malfunction of the actuator or other components, the device can be manually unlocked in an emergency using a customized tooling through the monitoring hole to avoid danger.

[0051] According to one embodiment of the present invention, the locking unit 5 is a locking pin, and the connecting hook 3 is provided with a locking hole. The locking pin enters the locking hole under the action of elastic force to lock the connecting hook 3, and the locking pin is pulled out from the locking hole under the action of pulling force to unlock the connecting hook 3.

[0052] In other words, the locking pin cooperates with the locking hole to lock and unlock the connecting hook 3. The locking hole can be located on the side of the connecting hook 3.

[0053] For example, in the case of a locking unit with a 5-position locking pin, the locking pin can be located in the groove of the limiting frame 7. The diameter of the locking hole of the connecting hook 3 is 1mm larger than the diameter of the locking pin, and the edge of the locking hole is chamfered C2.

[0054] According to one embodiment of the present invention, the torque application unit 11 is a torsion spring, and the pull rope 8 is a steel wire rope.

[0055] For example, the wire rope can be a 304 grade wire rope with a diameter of 2mm.

[0056] According to one embodiment of the present invention, the drive unit 9 is an actuation servo motor.

[0057] For example, the actuation servo can be an actuation servo with a rated output torque of 15 N·m.

[0058] When the drive unit 9 is an actuating servo, the take-up reel 10 is fixedly connected to the output shaft of the actuating servo by screws.

[0059] According to one embodiment of the present invention, the elastic reset unit 6 is a reset spring.

[0060] The working principle of the connecting device for track test vehicles described in this invention is described below with reference to examples.

[0061] When the connecting device is in the ready-to-hang state (i.e., the connecting hook is separated from the connecting ring), the internal situation of the connecting device is as follows: Figure 4As shown, at this time, the connecting hook 3 remains open under the action of the torsion spring, the pull rope 8 remains slack, and the locking pin is tightly attached to the side of the connecting hook under the elastic force of the return spring.

[0062] When the power vehicle (tractor) is connected and locked to the track test vehicle, the power vehicle can touch the track test vehicle at a low speed. At this time, the corner of the connecting hook 3 collides with the connecting ring 4. After overcoming the torsion of the torsion spring, the connecting hook 3 rotates counterclockwise around the rotating shaft 2 until the side of the connecting hook 3 is flush with the end face of the limit frame 7. Under the elastic force of the return spring, the locking pin enters the locking hole of the connecting hook 3, and the connection and locking are completed.

[0063] When the power car and the track test car are unlocked and separated, a rope-retracting signal is applied to the actuation servo motor. The actuation servo motor drives the take-up reel 10 to rotate counterclockwise and keeps the pull rope 8 taut. Under the pull of the pull rope, the locking pin overcomes the elastic force of the return spring and is pulled out of the locking hole of the connecting hook 3. The connecting device is unlocked. At this time, the power car is driven away from the track test car. An interaction force appears between the connecting hook 3 and the connecting ring 4. Under the combined action of this interaction force and the torsion force of the torsion spring, the connecting hook 3 rotates clockwise. The connecting device is separated. A rope-releasing signal is applied to the actuation servo motor. The actuation servo motor drives the take-up reel 10 to rotate clockwise and keeps the pull rope slack. Under the elastic force of the return spring, the locking pin is pressed tightly against the side of the connecting hook 3. At this time, the device returns to the ready-to-hook state.

[0064] In this invention, during the connection locking operation, a certain vertical and lateral positional deviation is allowed between the connecting ring 4 and the connecting hook 3. For example, the maximum permissible deviation can be 10mm.

[0065] Those skilled in the art should understand that the above description of the deviation is merely exemplary and not intended to limit the present invention.

[0066] This invention also provides a track test vehicle, which includes the connecting device for the track test vehicle described in the above embodiments.

[0067] As can be seen from the above embodiments, the connection device for track test vehicles described in this invention has at least the following advantages compared to the prior art:

[0068] (1) Lightweight device: The part of the connecting device fixed to the track test vehicle only includes the connecting ring 4, which has little impact on the mass center of gravity of the test vehicle and reduces the difficulty of test vehicle development.

[0069] (2) Simple structure: The connecting device is small in size, the mechanism is simple and intuitive, and the layout is compact.

[0070] (3) Easy assembly: The connecting device is simple in composition and easy to assemble. After assembly, it can be easily fixed to the vehicle body.

[0071] (4) Easy to use: When the connection device is connected, locked, unlocked and separated, no manual operation is required and it can be completed automatically.

[0072] (5) Safe and reliable: The connecting device is simple in composition and safe and reliable; the buffer pad (including the first buffer pad 15 and the second buffer pad 16) can be used to reduce the longitudinal impact and vibration caused by the mutual movement of the tractor and the test vehicle in both directions, and reduce the damage to the vehicle; the first side plate 12 is designed with a monitoring hole, which can be used to monitor the internal action status of the mechanism, and when the actuation servo motor or other components malfunction, it can be manually unlocked in an emergency through the monitoring hole using customized tooling to avoid danger; when the connecting device is performing the connection locking operation, the connecting ring 4 and the connecting hook 3 are allowed to have a certain vertical and lateral positional deviation.

[0073] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0074] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0075] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A connecting device for a track test vehicle, characterized in that, The device includes a main frame, a rotating shaft (2), a connecting hook (3), a connecting ring (4), a locking unit (5), a pull rope (8), a drive unit (9), a take-up reel (10), and a torque application unit (11), wherein, The main frame includes multiple pads (1), a first side plate (12), and a second side plate (13). The multiple pads (1) are evenly arranged between the first side plate (12) and the second side plate (13) and are connected to the first side plate (12) and the second side plate (13). The connecting hook (3) is disposed between the first side plate (12) and the second side plate (13) via the pivot (2); The connecting ring (4) is mounted on the track test vehicle, and the connecting hook (3) cooperates with the connecting ring (4) to achieve connection and separation; The torque application unit (11) is disposed on the rotating shaft (2), and one end is connected to the connecting hook (3) and the other end is connected to the first side plate (12). The torque application unit (11) is used to apply torque to the connecting hook (3). The pull rope (8) is connected to the locking unit (5), the drive unit (9) is set on the second side plate (13), one end of the take-up reel (10) is connected to the drive unit (9), and the other end is connected to the pull rope (8). When the connecting hook (3) is connected to the connecting ring (4), the connecting hook (3) overcomes the torque and rotates around the rotating shaft (2) until it is engaged with the connecting ring (4) to achieve connection, and the connecting hook (3) is locked by the locking unit (5). When the connecting hook (3) is separated from the connecting ring (4), the drive unit (9) drives the take-up reel (10) to rotate so that the locking unit (5) unlocks the connecting hook (3) under the pulling force of the pull rope (8). The connecting hook (3) rotates around the rotating shaft (2) under the combined action of torque and interaction force with the connecting ring (4) until it leaves the connecting ring (4) to achieve separation. The device also includes an elastic reset unit (6) and a limiting frame (7). The limiting frame (7) is disposed between the first side plate (12) and the second side plate (13) and connected to the first side plate (12) and the second side plate (13). The limiting frame (7) includes an open end and a closed end. The locking unit (5) is disposed at the open end of the limiting frame (7). The elastic reset unit (6) is disposed between the closed end of the limiting frame (7) and the locking unit (5). The elastic reset unit (6) is used to make the locking unit (5) fit tightly against the connecting hook (3) under the action of elastic force when the connecting hook (3) is in the separated state, and to lock the connecting hook (3) under the action of elastic force when the connecting hook (3) is in the connected state. The torque application unit (11) is a torsion spring, the pull rope (8) is a steel wire rope, and the drive unit (9) is an actuation servo motor.

2. The apparatus according to claim 1, characterized in that, The device also includes a first power vehicle connector, a second power vehicle connector, a gasket (14), and a first buffer pad (15). The first buffer pad (15) is disposed between the flange of the first side plate (12) and the gasket (14) and between the flange of the second side plate (13) and the gasket (14). The first power vehicle connector passes through the gasket (14), the first buffer pad (15), and the flange of the first side plate (12) in sequence to connect with the power vehicle. The second power vehicle connector passes through the gasket (14), the first buffer pad (15), and the flange of the second side plate (13) in sequence to connect with the power vehicle.

3. The apparatus according to claim 2, characterized in that, The device also includes a second buffer pad (16), which is disposed between the flange of the first side plate (12) and the power vehicle and between the flange of the second side plate (13) and the power vehicle.

4. The apparatus according to claim 3, characterized in that, The first side plate (12) is provided with a monitoring hole.

5. The apparatus according to any one of claims 1-4, characterized in that, The locking unit (5) is a locking pin, and the connecting hook (3) is provided with a locking hole. The locking pin enters the locking hole under the action of elastic force to lock the connecting hook (3). The locking pin is pulled out from the locking hole under the action of tension to unlock the connecting hook (3).

6. The apparatus according to claim 1, characterized in that, The elastic reset unit (6) is a reset spring.

7. A track test vehicle, characterized in that, Includes the connecting device for a track test vehicle as described in any one of claims 1-6.

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