Connecting and locking device for train tail air pipe

Abstract

The utility model relates to the technical field of train tail air duct connection, and provides a connecting and locking device for a train tail air duct, which aims to solve the problems that a connecting device for the train tail air duct in the prior art does not have a locking function, the operation is tedious by fixing through a ribbon or an iron wire in order to avoid loosening, and the connecting device does not have an anti-theft function. Comprising an air tap, a train tail air pipe connector and a lock. The air tap and the lock are mounted on an air pipe connector at the tail of a train; the train tail air pipe connector comprises a fixing frame, an air tap mounting frame and a handle, the fixing frame and the air tap mounting frame are oppositely arranged, and one end of the fixing frame and one end of the air tap mounting frame are both connected to the handle; the air tap is mounted on the air tap mounting frame, and the lockset is mounted on the fixing frame; when closed, the lock can be inserted into a groove in a train tail air pipe connector to achieve connection and locking. The anti-falling and anti-theft lock is simple in structure and convenient to operate, has anti-falling and anti-theft functions, and avoids casualty accidents caused by illegal theft of non-railway workers due to the arrangement of the lock.

Description

Technical Field

[0001] The utility model relates to the technical field of train tail air duct connection, in particular to a connection and locking device for a train tail air duct. Background Art

[0002] Full-train air pressure continuity is crucial for effective braking throughout the entire train. During operation, the rear air duct of a passenger or freight train is primarily connected to the rear safety protection system. During train inspection and wind testing, the rear air duct of a passenger or freight train is primarily connected to the air pressure measurement and feedback device.

[0003] In existing technology, the connection device for the rear air duct of a passenger or freight train cannot be locked. After the rear safety device air duct connector is connected to the train air duct, the operator at the rear of the train must further secure the connection with a cable tie or wire to prevent the connection from loosening due to vibration during train operation. When the rear wind pressure measurement and feedback device used for train inspection is connected to the train air duct, it is secured only by the principle of a pressure rod.

[0004] The current connection device of the train tail air duct has the following problems:

[0005] 1. It needs to be further fixed with cable ties or wires, which has the disadvantage of cumbersome operation and does not meet the requirements of saving and low carbon.

[0006] 2. The environment at the train stop is diverse and complex. When the train stops in an open station, there are active people inside and outside the station. The connection device does not have an anti-theft function, and there may be a risk of equipment theft.

[0007] 3. The air pressure in the train air duct can be as high as about 600kPa. If untrained personnel (non-railway staff) unfasten the air duct connection without closing the corner gate, the train air duct pressure will be immediately transmitted to the unfastened air duct connection, and the air duct will swing greatly in an instant, which may easily cause casualties. Utility Model Content

[0008] The utility model aims to provide a connection and locking device for the air duct at the rear of a train, so as to solve the problems in the prior art that the connection device for the air duct at the rear of a train does not have a locking function, the operation of fixing it with a cable tie or wire to prevent it from loosening is cumbersome, and it does not have an anti-theft function.

[0009] The utility model is realized by adopting the following technical solutions:

[0010] The utility model provides a connection and locking device for a train tail air duct, comprising an air nozzle, a train tail air duct connector and a lock; the air nozzle and the lock are installed on the train tail air duct connector;

[0011] The train tail air duct connector includes a fixing frame, a gas nozzle mounting frame and a handle, wherein the fixing frame and the gas nozzle mounting frame are arranged opposite to each other, and one end of the fixing frame and the gas nozzle mounting frame are both connected to the handle;

[0012] The gas nozzle is mounted on the gas nozzle mounting frame, and the lock is mounted on the fixing frame;

[0013] When the lock is closed, it can be inserted into the groove on the air duct joint at the rear of the train to achieve connection and locking.

[0014] As the preferred technical solution:

[0015] The fixing frame, the air nozzle mounting frame and the handle are integrally formed structural parts.

[0016] As the preferred technical solution:

[0017] The lock comprises a locking tongue, which can be extended or retracted. The locking tongue is telescopic toward the air nozzle mounting frame, and when extended, the locking tongue can be stuck in the groove of the air duct joint at the rear of the train.

[0018] As the preferred technical solution:

[0019] The lock also includes a lock core, which is connected to the lock tongue. A keyhole is provided on the lock core. When a key is inserted into the keyhole and the key is turned, the lock core can drive the lock tongue to rebound, thereby releasing the lock tongue from the air duct joint at the rear of the train.

[0020] As the preferred technical solution:

[0021] A lock body braking button is provided at the rear end of the lock tongue, and pressing the lock body braking button can cause the lock tongue to extend.

[0022] As the preferred technical solution:

[0023] The lock tongue adopts a pin, and an elastic telescopic part is sleeved on the outside of the pin to realize the rebound of the pin.

[0024] As the preferred technical solution:

[0025] The elastic expansion member may be a spring.

[0026] As the preferred technical solution:

[0027] The air nozzle mounting frame is provided with a mounting hole, and the mounting hole is used for mounting the air nozzle.

[0028] As the preferred technical solution:

[0029] One end of the air nozzle is the forward end of the air nozzle, which is used to connect with the air duct joint at the rear of the train in a forward direction; the other end of the air nozzle is the reverse end of the air nozzle, which is used to connect with other equipment.

[0030] As the preferred technical solution:

[0031] The forward end of the air nozzle and the fixing bracket are located on the same side of the air nozzle mounting bracket.

[0032] As the preferred technical solution:

[0033] One end of the air nozzle mounting bracket is connected to the handle, and the other end of the air nozzle mounting bracket is connected to an inclined ladder slot, and the inclined ladder slot is used to be connected to the air duct joint at the rear of the train.

[0034] As the preferred technical solution:

[0035] The inclined ladder slot and the air nozzle mounting frame are integrally formed structural parts.

[0036] As the preferred technical solution:

[0037] A fixing frame inclined surface is provided between the fixing frame and the handle, and the fixing frame and the handle are connected via the inclined surface.

[0038] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0039] 1. Based on the characteristics of the existing train tail air duct connector, the utility model improves the widely used air duct connector and proposes a connection and locking device for the train tail air duct. The connection and locking are achieved by the lock fitting in conjunction with the groove on the train tail air duct connector, which has the function of preventing disconnection and theft.

[0040] 2. The utility model has a simple structure, light weight, easy operation and can be reused.

[0041] 3. The utility model is provided with a lock for connection, and the connection cannot be released without a key. Untrained personnel (non-railway staff) cannot open the air duct connection, thus avoiding casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a front perspective schematic diagram of the connection and locking device for the air duct at the rear of a train according to the present invention.

[0043] Figure 2 This is a reverse perspective schematic diagram of the connection and locking device for the train tail air duct according to the present invention.

[0044] Figure 3This is a front view of the connection and locking device for the air duct at the rear of a train according to the present invention.

[0045] Figure 4 This is a top view of the connection and locking device for the air duct at the rear of a train according to the present invention.

[0046] Figure 5 This is a side view of the connection and locking device for the train tail air duct according to the present invention.

[0047] Figure 6 for Figure 5 Cross-section view in the AA direction.

[0048] Icons: 1-air nozzle, 2-train tail air duct connector, 3-lock, 101-air nozzle forward end, 102-air nozzle reverse end, 201-fixing bracket, 202-air nozzle mounting bracket, 203-handle, 204-ladder slot, 205-second connection hole, 206-fixing bracket slope, 301-lock tongue, 302-keyhole. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] Example 1

[0051] like Figures 1-6 As shown, this embodiment proposes a connection and locking device for the train tail air duct, including an air nozzle 1, a train tail air duct connector 2 and a lock 3; the air nozzle 1 and the lock 3 are installed on the train tail air duct connector 2.

[0052] In this embodiment, the air nozzle 1 is mounted on the train tail air duct connector 2 via a collar.

[0053] The train rear air duct connector 2 includes a fixing frame 201, a nozzle mounting frame 202, and a handle 203. The fixing frame 201 and the nozzle mounting frame 202 are arranged opposite each other, and one end of each of the fixing frame 201 and the nozzle mounting frame 202 is connected to the handle 203. In this embodiment, the fixing frame 201, the nozzle mounting frame 202, and the handle 203 are integrally cast.

[0054] The air nozzle mounting frame 202 is provided with a mounting hole, which is circular and is used for mounting the air nozzle 1 .

[0055] One end of the air nozzle 1 is a forward end 101, which is used to connect to the rear air duct connector of the train. The other end of the air nozzle 1 is a reverse end 102, which is used to connect to other equipment, such as other air ducts. In this embodiment, the forward end 101 and the fixing bracket 201 are located on the same side of the air nozzle mounting bracket 202.

[0056] One end of the air nozzle mounting bracket 202 is connected to the handle 203, and the other end of the air nozzle mounting bracket 202 is connected to an inclined ladder slot 204, which is used to connect to the air duct connector at the rear of the train. The inclined ladder slot 204 and the air nozzle mounting bracket 202 are integrally cast.

[0057] The inclined ladder slot 204 is provided with a slope that slopes from the inner end of the inclined ladder slot 204 to the outer end thereof, where the inner end is the end of the inclined ladder slot 204 connected to the air nozzle mounting bracket 202. The inclined ladder slot 204 can be tightly connected to the rear air duct joint of the train as the handle 203 rotates.

[0058] A fixing frame inclined surface 206 is provided between the fixing frame 201 and the handle 203 . The fixing frame 201 and the handle 203 are connected via the inclined surface, which is more secure than a method in which the fixing frame 201 is vertically connected to the handle 203 .

[0059] A lock 3 is installed on the fixing frame 201. The lock 3 is used to be inserted into the groove on the air duct connector at the rear of the train. After the lock 3 is engaged with the air duct connector at the rear of the train, it will not be disengaged, thereby achieving connection and locking.

[0060] The lock 3 is connected to the fixing frame 201 by screws. Specifically, a first connecting hole is provided on the right side of the fixing frame 201, and a screw is installed in the first connecting hole to connect the lock 3 to the fixing frame 201; two second connecting holes 205 are provided on the rear side of the fixing frame 201, and screws are installed in the second connecting holes 205 to connect the lock 3 to the fixing frame 201.

[0061] The lock 3 includes a lock tongue 301, which can be extended or retracted. The lock tongue 301 is extended toward the air nozzle mounting bracket 202. When the lock tongue 301 is extended, it can be stuck in the groove of the air duct joint at the rear of the train. At this time, it is in a locked state. In the locked state, the handle 203 cannot be rotated. When operating, the lock body brake button at the rear end of the lock tongue 301 is pressed to extend the lock tongue 301.

[0062] The lock 3 also includes a lock core, which is connected to the lock tongue 301. When the key is inserted into the keyhole 302 on the lock core, the key is turned to drive the lock tongue 301 to rebound through the lock core, thereby releasing the lock tongue 301 and the air duct joint at the rear of the train. At this time, the handle 203 can be rotated normally.

[0063] The fixing and locking principle of the connection and locking device for the train tail air duct of the utility model is as follows:

[0064] Step 1: The forward end 101 of the air nozzle is forwardly connected to the air duct joint at the rear of the train.

[0065] Step 2: Press the air duct joint at the rear of the train to prevent it from swinging, and rotate the handle 203 so that the lock tongue 301 can be exposed from the groove at the end of the air duct joint at the rear of the train and can fall normally.

[0066] Step 3: Press the lock body braking button at the rear end of the lock tongue 301 to make the lock tongue 301 fall into the locked state.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A connection and locking device for a train tail air duct, characterized in that: It includes an air nozzle, a train tail air duct connector and a lock; the air nozzle and the lock are installed on the train tail air duct connector; The train tail air duct connector comprises a fixing frame, an air nozzle mounting frame and a handle, wherein the fixing frame and the air nozzle mounting frame are arranged opposite to each other, and one end of the fixing frame and the air nozzle mounting frame are both connected to the handle; The gas nozzle is installed on the gas nozzle mounting frame, and the lock is installed on the fixing frame; When the lock is closed, it can be inserted into the groove on the air duct joint at the rear of the train to achieve connection and locking.

2. The connection and locking device for the train tail air duct according to claim 1, characterized in that: The lock comprises a locking tongue, which can be extended or retracted, and the locking tongue is telescoped toward the air nozzle mounting frame, and when the locking tongue is extended, it can be stuck in the groove of the air duct joint at the rear of the train.

3. The connection and locking device for the train tail air duct according to claim 2, characterized in that: The lock also includes a lock core, which is connected to the lock tongue. A key hole is provided on the lock core. When a key is inserted into the key hole and the key is turned, the lock core can drive the lock tongue to rebound, thereby releasing the lock tongue from the air duct joint at the rear of the train.

4. The connecting and locking device for the train tail air duct according to claim 2 or 3, characterized in that: A lock body braking button is arranged at the rear end of the lock tongue, and pressing the lock body braking button can cause the lock tongue to extend.

5. The connection and locking device for the train tail air duct according to claim 3, characterized in that: The locking tongue adopts a pin, and an elastic telescopic part is sleeved outside the pin to realize the rebound of the pin.

6. The connecting and locking device for the train tail air duct according to claim 1, characterized in that: The air nozzle mounting frame is provided with a mounting hole, and the mounting hole is used for mounting the air nozzle.

7. The connection and locking device for the train tail air duct according to claim 1, characterized in that: One end of the air nozzle is the forward end of the air nozzle, and the forward end of the air nozzle is used for forward docking with the air duct joint at the rear of the train; the other end of the air nozzle is the reverse end of the air nozzle.

8. The connection and locking device for the train tail air duct according to claim 7, characterized in that: The forward end of the air nozzle and the fixing frame are located on the same side of the air nozzle mounting frame.

9. The connecting and locking device for the rear air duct of a train according to claim 1, characterized in that: One end of the air nozzle mounting frame is connected to the handle, and the other end of the air nozzle mounting frame is connected to an inclined ladder slot, and the inclined ladder slot is used to connect to the air duct joint at the rear of the train.

10. The connection and locking device for the train tail air duct according to claim 1, characterized in that: A fixing frame inclined surface is provided between the fixing frame and the handle, and the fixing frame and the handle are connected via the inclined surface.

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