CN204978691U - Automatic device of seting out of railway freight car - Google Patents

Abstract

The utility model provides an automatic picking-and-hanging device for railway wagons, which includes a fixing device, which is installed on the coupler, and is provided with a first through hole and a second through hole; The valve stem used to seal the first through hole in the first through hole and the valve stem spring installed in the first through hole are in conflict with the valve stem. A circuit connection device for connecting wires, including an electrical connection joint and a protective unit for isolating the electrical connection joint. The utility model can realize the automatic detachment and hanging of the air duct and circuit of the railway freight car, shorten the detachment operation time, save labor costs, and improve the personal safety index of the operators.

Description

An automatic unhooking device for railway wagons

technical field

The utility model relates to the field of railway vehicles, in particular to an automatic picking-and-hanging device for railway freight cars.

Background technique

For the railway trucking industry, the dwell time of vehicles at the station accounts for a considerable proportion of the vehicle turnover time. During a turnaround of a truck, it is generally necessary to perform multiple shunting operations. The quality of the shunting operation, the efficiency, and the safety of the shunting operation are not only important for completing the loading and unloading work at the station, shortening the vehicle's residence time, and speeding up the vehicle turnover. Various indicators have a great impact, and are directly related to ensuring traffic safety and realizing train formation plans, train operation diagrams, and transportation schemes.

A very important part of the shunting operation of railway wagons is to unhook the railway vehicles. Usually, the unhooking operation of railway wagons not only unhooks the couplers, but also unhooks the air ducts and circuits. The air ducts can transmit wind. , used for braking and relief of the train, and the circuit is used to connect the electrical connection between the two carriages. At present, the detachment of the railway air circuit and the circuit is still in the manual operation stage. When the truck is detachment, it needs The shunting personnel drilled under the coupler to pick up and open and close the air passages and circuits at both ends, which increased the heavy workload for the shunting personnel, and it was also dangerous for the shunting personnel to enter the coupler for work, and it also greatly affected Shunting efficiency.

In view of this, the utility model is proposed.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide an automatic unhooking device for railway freight cars. It can also automatically close the air circuit and circuit when the coupler is unhooked, so as to shorten the unhooking operation time, save labor costs and improve the personal safety index.

The technical scheme that the utility model solves its technical problem adopts is:

The utility model provides an automatic picking-and-hanging device for railway wagons, which includes a fixing device, which is installed on the coupler, and is provided with a first through hole and a second through hole; The valve rod in the first through hole is used to seal the first through hole and the valve rod spring installed in the first through hole, and the valve rod spring is in conflict with the valve rod. A circuit connection device for connecting wires, including an electrical connection joint and a protective unit for isolating the electrical connection joint.

Further, the first through hole is a stepped through hole, which sequentially includes a first-stage diameter-reducing hole, a second-stage diameter-reducing hole, and a third-stage diameter-reducing hole from outside to inside, and the inner diameter of the second-stage diameter-reducing hole is smaller than the third-stage diameter-reducing hole. The inner diameter of the reducing hole is greater than the inner diameter of the primary reducing hole.

Further, the valve stem is I-shaped, including a first sealing part, a second sealing part located at both ends and a connecting part with a reduced diameter in the middle, and the first sealing part closely fits with the outer end surface of the first-stage variable diameter hole , the second sealing part closely fits with the end face at the junction of the secondary reducing hole and the tertiary reducing hole.

Further, the valve stem also includes a positioning part arranged on the connecting part, located between the first sealing part and the second sealing part, the outer diameter of the positioning part matches the inner diameter of the secondary variable diameter hole, and the positioning There are ventilation holes on the top.

Further, the air path connection device further includes a valve stem sleeve fixed in the first through hole, which is in conflict with the valve stem spring, and a ventilation hole is provided on the outer wall of the valve stem sleeve.

Further, the protection unit includes a driving device connected to the fixing device and a transmission device connected to the electrical connection joint, and the driving device is connected to the transmission device.

Further, the fixing device is provided with a second through hole, and the driving device includes a U-shaped bar installed in the second through hole and a return spring, and the return spring is sleeved on the U-shaped bar.

Further, one end of the U-shaped rod is located in the second through hole and extends out of the end surface of the second through hole, and the other end is slidably connected with the transmission device.

Further, the transmission device includes a safety cover, on which a swing rod is slidably connected to the U-shaped rod, and the swing rod is also hinged to the electrical connection joint.

Further, a sliding block is provided at one end of the U-shaped bar connected to the swinging rod, and a sliding groove is provided on the swinging rod, and the sliding block can slide along the sliding groove.

Further, the fixing device is provided with a positioning and centering device for guiding the automatic circuit detachment device to accurately dock, and the positioning and centering device includes a positioning protrusion and a positioning groove.

The beneficial effects of the technical solution provided by the specific embodiment of the utility model are:

An automatic detachment device for railway wagons is provided. When the coupler is connected, the positioning and centering device on the positioning joint guides the accurate docking of the interface, and automatically opens the air circuit and the circuit, and can also automatically close the air circuit and the circuit when the coupler is detached. circuit, thus realizing the purpose of shortening the unhooking operation time, saving labor costs and improving the personal safety index.

Description of drawings

In order to more clearly illustrate the technical solutions in the specific embodiments of the present utility model, the accompanying drawings that need to be used in the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some of the utility models. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the structural representation of the automatic detachment device for railway wagons installed on the coupler provided by the utility model;

Fig. 2 is the sectional view of a kind of railway wagon automatic picking and hanging device provided by the utility model;

Fig. 3 is a schematic structural view of the fixing device provided by the utility model;

Fig. 4 is a sectional view of the first through hole provided by the utility model

Fig. 5 is a schematic structural view of the valve rod provided by the utility model;

Fig. 6 is a schematic structural view of the valve stem cover provided by the utility model;

Fig. 7 is the cross-sectional view of the automatic hanging device for hanging railway wagons provided by the utility model;

Fig. 8 is a schematic structural diagram of a circuit connection device provided by the utility model;

Fig. 9 is a sectional view of the circuit connection device provided by the utility model;

Fig. 10 is another cross-sectional view of the circuit connection device provided by the utility model;

Fig. 11 is a structural schematic diagram of another circuit connection device provided by the utility model;

Fig. 12 is a schematic structural diagram of another circuit connection device provided by the present invention.

Reference signs: 1-positioning protrusion, 2-positioning groove, 3-first through hole, 4-second through hole, 5-valve stem, 6-valve stem sleeve, 7-valve stem spring, 8-electric Connecting joint, 9-safety cover, 10-sliding groove, 11-sliding block, 12-U-shaped rod, 13-air pipe joint, 14-first buffer device, 15-union nut, 16-second buffer Device, 17-fixing device, 18-return spring, 19-connecting part, 20-first sealing part, 21-positioning part, 22-second sealing part, 23-primary reducing hole, 24-secondary reducing Hole, 25-tertiary variable diameter hole, 26-pin, 27-first sealing ring, 28-second sealing ring, 29-rotating shaft, 30-swing lever, 31-teeth, 32-gear.

detailed description

As shown in Figure 1, the railway freight car automatic detachment device in this embodiment is installed on the coupler, moves together with the coupler, and can be used in pairs when in use, that is, the railway freight car automatic detachment device is installed on the mutually connected couplers. device, and the automatic detachment devices of railway freight cars on both sides are placed opposite to each other. When the freight cars are connected, the couplers on both sides are automatically connected and centered. When the external force is applied, the air circuit and the circuit are automatically connected; when the freight car is removed, the couplers on both sides are automatically removed, and the automatic removal and hanging devices of the railway freight cars on both sides are far away from each other. At this time, no external force is applied to each other, and the air circuit connection device The device connected with the circuit returns to the initial state, blocks the air path, and cuts off the circuit. Wherein, the "front" referred to in the utility model indicates the direction to the compartment to be attached, and the "rear" referred to in the utility model indicates the direction away from the compartment to be attached.

Embodiment one

Fig. 2 is the cross-sectional view of the automatic unhooking device for railway wagons in the detached state, including the fixing device 17 connected with the coupler, the air path connecting device for connecting the ventilation pipe and the circuit connecting device for connecting the circuit. Wherein, both the air duct connecting device and the circuit connecting device are installed in the fixing device 17, and the fixing device 17 is fixed on the coupler by bolts and moves together with the coupler. Preferably, the air duct connecting device is installed under the circuit connecting device.

Wherein, the upper part of the fixing device 17 is provided with a rectangular groove for installing the circuit connection device, and the lower part is provided with a first through hole 3 communicating with the air duct. The structure of the fixing device is shown in FIG. 3 .

Wherein, the air path connection device includes a valve stem 5 slidably arranged in the first through hole 3 for sealing the first through hole 3 and a valve stem spring 7 installed in the first through hole 3, and the valve stem 5 is subjected to an external force. The action slides in the direction of the valve stem spring 7 to open the air path, and when the external force disappears, it is automatically reset and closed by the force of the valve stem spring 7 to close the air path.

Wherein, the internal structure of the first through hole 3 cooperates with the structure of the valve stem 5 to improve the airtightness of the air passage. Preferably, the first through hole 3 is a stepped through hole, and its cross-sectional view is shown in FIG. The inner diameter of the first-stage diameter-reducing hole 24 is smaller than the inner diameter of the third-stage diameter-reducing hole 25 and larger than the inner diameter of the first-stage diameter-reducing hole 23 .

Preferably, the valve stem 5 is I-shaped, as shown in FIG. The outer end surface of the reducing hole 23 is closely fitted, and the second sealing portion 22 is closely fitted with the end surface at the junction of the secondary reducing hole 24 and the tertiary reducing hole 25 . Wherein, the first sealing portion 20 is a conical body, the minimum outer diameter of which is smaller than the inner diameter of the primary variable diameter hole 23, and the maximum external diameter is less than/equal to the internal diameter of the primary variable diameter hole 23. Preferably, the maximum diameter of the first sealing portion 20 is The outer diameter is close to the inner diameter of the primary reducing hole 23 . When the coupler is removed, under the force of the stem spring 7, the first sealing part 20 partially protrudes outside the first-stage diameter-reducing hole 23, and closely cooperates with the outer end surface of the first-stage diameter-reducing hole 23 to seal the air passage ; The second sealing part 22 is located at the three-stage diameter-reducing hole 25 of the first through hole 3, and the maximum outer diameter is greater than the inner diameter of the second-stage diameter-reducing hole 24 and smaller than the inner diameter of the third-stage diameter-reducing hole 25. The force of the valve stem spring 7 is closely matched with the end face at the junction of the secondary diameter reducing hole 24 and the tertiary diameter reducing hole 25 to further improve the airtightness of the air passage.

Preferably, a first seal ring 27 is also provided on the outer end surface of the first-stage diameter-reducing hole 23, and correspondingly, a structure matching the first seal ring 27 is provided at the place where the first-stage diameter-reduction hole 23 is connected to the first seal ring 27, The preferred first sealing ring 27 is a flange-type sealing ring, which is used to cooperate with the first sealing part 20 to seal its own air path on the one hand, and on the other hand, when two carriages are connected, it can be connected with the vehicle to be connected. The automatic picking and hanging device of the railway wagon is tightly combined to prevent air leakage; preferably, the end face at the junction of the secondary reducing hole 24 and the tertiary reducing hole 25 is also provided with a second sealing ring 28, which is used to be tightly sealed with the second sealing part 22. Cooperate to further improve the sealing.

Since the outer diameter of the first sealing part 20 is smaller than the inner diameter of the secondary variable diameter hole 24, and the outer diameter of the second sealing part 22 is smaller than the inner diameter of the third stage variable diameter hole 25, it is easy for the valve stem 5 to slide in the direction of the valve stem spring 7. Therefore, in order to stabilize the sliding stability of the valve stem 5 in the first through hole 3 and ensure the horizontal sliding of the valve stem 5 in the first through hole 3, the valve stem 5 also includes a positioning portion 21 arranged on the connecting portion 19 , located between the first sealing portion 20 and the second sealing portion 22, the outer diameter of the positioning portion 21 is close to the inner diameter of the secondary reducing hole 24, and the positioning portion 21 is provided with a ventilation hole for dredging the air passage.

The air path connection device also includes a valve rod sleeve 6 fixed in the first through hole 3, which is in conflict with the valve rod spring 7, and its structure is shown in FIG. 6 . The valve stem sleeve 6 is hollow inside, and the outer wall is provided with ventilation holes, and the end away from the valve stem spring 7 is provided with an external thread, which is threadedly connected with the first through hole 3. The valve stem spring 7 is located in the valve stem sleeve 6, and is connected with the valve stem sleeve. 6 The internal structure is in conflict. Preferably, the inner diameter of the end of the valve stem sleeve 6 close to the second sealing portion 22 is smaller than the maximum outer diameter of the second sealing portion 22, so that the maximum displacement of the valve stem 5 to the direction of the valve stem spring 7 is limited, so that the air passages on both sides can be opened. .

The air duct connection device also includes an air duct joint 13 fixed in the first through hole 3, one end is connected to the air duct, and the other end is provided with an external thread, which is threadedly connected with the first through hole 3, so that the air duct joint 13 is fixed In the first through hole 3, the stability when the air duct is connected is further improved. Preferably, the end of the air pipe union 13 connected to the air duct is further provided with a union nut 15 , so as to facilitate screwing the air duct union 13 into the first through hole 3 .

The state when the coupler is connected is shown in Figure 7. The two automatic detachment devices on the two couplers move together with the coupler and approach each other. The valve stem 5 contacts the valve stem on the other coupler and is subjected to another The force of the valve stem on the coupler overcomes the elastic force of the valve stem spring 7 and gradually moves toward the valve stem sleeve 6. At this time, the first sealing part 20 is separated from the first sealing ring 27, and the second sealing part 22 is separated from the second sealing ring. The ring 28 is separated, and when the first sealing part 20 slides into the first through hole 3, the valve stem sleeve 6 contacts the second sealing part 22, and the air passage is opened.

When the coupler is removed, the valve stem spring 7 is in a compressed state, giving the valve stem 5 a forward force, and the valve stem 5 is gradually slid forward by the force of the valve stem spring 7 until part of it protrudes out of the first through hole 3 , the outer surface of the first sealing part 20 is pressed against the first sealing ring 27, and at the same time, the inner end surface of the second sealing part 22 is closely combined with the second sealing ring 28 to further enhance the airtightness of the air passage.

Wherein, when the coupler is connected, the path of the wind is as follows: the wind enters the air pipe joint 13 from the air pipe on one side (for example, the air pipe on the right), and enters the three-stage reducing hole 25 through the ventilation hole on the valve stem cover 6. The chamber in the middle of the positioning part 21 enters the chamber in the secondary diameter reducing hole 24 and the primary diameter reducing hole 23 through the ventilation hole on the positioning part 21, so that the air passage on the right side is connected. Since the structure of the left air path connection device is the same as that of the right air path connection device, when the right air path is opened, the left air path is also in an open state, and the devices on both sides are in contact with each other and sealed by the first sealing ring 27, and the left and right air paths are connected. .

Fig. 8 is a structural schematic view of the circuit connecting device (hiding the fixing device and the air duct connecting device), and Fig. 9 is a sectional view of the circuit connecting device along the direction of the swing rod (installed in the fixing device), it can be seen that the circuit connecting device includes The electrical connection joint 8 in the fixing device 17 and the protection unit used to protect the electrical connection joint 8, the protection unit is automatically leaked out of the electrical connection joint 8 by the external force of the contact with the fixing device when the two couplers are connected, and when the external force disappears The electrical connection joint 8 is automatically covered. Wherein, the electrical connection connector 8 is used to connect the circuits of the two compartments, and the connector of the electrical connection connector 8 is provided with pins and jacks, and the rear part is connected with two electric wires. The electrical connection connectors 8 on both sides of the coupler are complementary structures, When connecting and hanging, the electrical connection joints 8 on both sides are butted with each other to switch on the circuit.

Wherein, the protection unit includes a driving device connected to the fixing device 17 and a transmission device connected to the electrical connection joint 8. The driving device is driven by an external force to drive the transmission device to leak out of the electrical connection joint 8. When the external force disappears, the driving device resets and drives the transmission device to cover Electrical connection connector 8.

Preferably, the fixing device 17 is provided with a second through hole 4, and the driving device includes a U-shaped rod 12 installed in the second through hole 4 and a return spring 18. One end of the U-shaped rod 12 is located in the second through hole 4 and extends to The second through hole 4 is outside the end surface, and the other end is connected with the transmission device.

Wherein, the return spring 18 is sleeved on the U-shaped bar 12, and a pin 26 is arranged on the U-shaped bar 12. One end of the return spring 18 is in conflict with the internal structure of the second through hole 4, and the other end is in conflict with the pin 26. The pin 26 is fixed on the U-shaped bar 12 and moves together with the U-shaped bar 12 .

Fig. 10 is a sectional view along the compression direction of the return spring 18, the return spring 18 is installed in the second through hole 4, the first half of the second through hole 4 is cylindrical, matches the shape of the return spring 18, and the second half is square, Cooperate with the shape of U-shaped bar 12.

Wherein, one end of the U-shaped bar 12 extending to the end surface of the second through hole 4 is in contact with the fixing device 17 on the other coupler when the two couplers are connected, and is pushed backward by the force of the fixing device 17 on the other coupler. Sliding; when the two couplers are removed, the U-shaped bar 12 extends to an end outside the end face of the second through hole 4 and is automatically reset by the active force of the return spring.

The transmission device includes a safety cover 9, on which a swing rod 30 is arranged, connected with the U-shaped rod 12, and a sliding groove 10 is arranged on the swing rod 30. Wherein, the safety cover 9 is preferably arc-shaped, and is fixed on the electrical connection joint 8 by a swing rod 30, which is hinged to the electrical connection joint 8, and the safety cover 9 can swing back and forth along the hinge point under the drive of the swing rod 30. When the coupler is connected, the safety cover 9 swings backwards to leak out the electrical connection joint 8 to facilitate the butt connection circuit of the electrical connection joint 8. Electricity.

As shown in Figure 11, one end of the U-shaped bar 12 connected to the swing bar 30 is provided with a sliding block 11, and the sliding block 11 is rotationally connected with the U-shaped bar 12 through a rotating shaft 29. Preferably, the sliding block 11 is a cuboid, and the sliding block 11 is The inner surface of the groove 10 is smooth, and the sliding block 11 is located in the sliding groove 10 and can slide along the sliding groove 10 driven by the U-shaped bar 12 . When the sliding block 11 slides backward, it drives the swing bar 30 to swing backward, and when the sliding block 11 slides forward, it drives the swing bar 30 to swing forward.

Preferably, the fixing device 17 is also provided with a limit block, which is fixed at the square groove on the end face of the second through hole 4 to limit the displacement of the pin 26, preventing the return spring 18 from pushing the pin 26 out of the second through hole 4 .

When the coupler is connected, the two railway wagon automatic unhooking devices installed on the connected coupler move together with the coupler and approach each other. The railway freight car automatic detachment device on the coupler is in contact with each other, and driven by the force of another set of railway freight car detachment device, the pin 26 compresses the return spring 18, and overcomes the force of the return spring 18 to slide backward in the second through hole 4 Simultaneously, the sliding block 11 on the U-shaped bar 12 slides backward in the sliding groove 10, driving the safety cover 9 to swing backward, the safety cover 9 opens and leaks the electrical connection joint 8, and the electrical connection joints 8 on both sides are connected to each other to connect the circuit.

When the coupler is detached, two groups of railway wagon automatic decoupling devices move back to each other, the electrical connection joints 8 are separated from each other and the circuit is disconnected, and the return spring 18 in a compressed state gives the pin 26 a forward force, and the pin 26 drives the U-shaped bar 12 slides forward, while the sliding block 11 slides forward in the sliding groove 10, driving the safety cover 9 to swing forward, and the safety cover 9 covers the electrical connection joint 8.

The fixing device 17 is also provided with a positioning and centering device for guiding the fixing device to be accurately docked. The positioning and centering device includes a positioning protrusion 1 and a positioning groove 2. Preferably, the outer end of the positioning protrusion 1 is a cone , the shape of the positioning groove 2 is cylindrical. When the couplers on the left and right sides are connected, the positioning protrusion on the left fixing device 17 is inserted into the positioning groove on the right fixing device, and the positioning protrusion on the right fixing device is inserted into the left fixing device simultaneously. In the positioning groove, the accurate positioning and centering of the automatic lifting device can be realized in this way, and the radial relative displacement and lateral displacement of the fixing devices on both sides after docking can also be avoided, and because the outer end of the positioning protrusion 1 is a cone , can play a guiding role when the positioning joint is docked, so even if the positioning joints on both sides are offset, as long as the offset displacement is smaller than the radius of the positioning groove 2 on the other side, the cone can still guide the positioning joint for docking.

Preferably, the first buffer device 14 and the second buffer device 16 are also provided in the fixing device 17 . The first buffer device 14 is installed in the rear part of the first through hole 3 and conflicts with the rear shell of the fixing device 17; There is also a backing plate between them, one end of the second buffer device 16 is in conflict with the backing plate, and the other end is in conflict with the base of the fixing device 17. The first buffer device 14 and the second buffer device 16 are used to connect and remove solution and absorb the impact force in all directions generated by the vibration of the vehicle during the operation of the truck.

The automatic detachment device for railway wagons in this embodiment guides the accurate docking of the interface through the centering guide device on the fixing device when the coupler is connected, and automatically opens the air circuit and circuit, and automatically closes the air circuit and circuit when the coupler is detached. circuit, thus realizing the purpose of shortening the unhooking operation time, saving labor costs and improving the personal safety index.

Embodiment two

As shown in Figure 12, the difference between this embodiment and Embodiment 1 is that the inner surface of the sliding groove 10 in this embodiment is provided with two rows of teeth 31, and the end of the U-shaped bar 12 close to the swing bar 30 is provided with a gear 32 , the gear 32 meshes with the tooth 31 on one side, and the other side of the tooth 31 leaves a certain gap, so that the tooth 31 can rotate in the sliding groove 10, and the gear 32 is connected to the U-shaped bar 12 in rotation.

When the coupler is connected, the U-shaped bar 12 overcomes the force of the return spring 18 and moves backward, driving the gear 32 to rotate backward, the swing lever 30 swings backward, and drives the safety cover 9 to swing backward to leak out of the electrical connection joint. The joints are butted with each other to connect the circuit; when the coupler is removed, the U-shaped bar 12 is moved forward by the force of the return spring 18, driving the gear 32 to rotate forward, the swing rod 30 to swing forward, and driving the safety cover 9 to swing forward to cover the Electrical connection connector.

The automatic detachment device for railway wagons in this embodiment guides the accurate docking of the interface through the centering guide device on the fixing device when the coupler is connected, and automatically opens the air circuit and circuit, and automatically closes the air circuit and circuit when the coupler is detached. circuit, thus realizing the purpose of shortening the unhooking operation time, saving labor costs and improving the personal safety index.

Embodiment Three

The difference between this embodiment and Embodiment 1 is that the driving device in this embodiment includes a micro switch installed on the fixing device 17, a controller, and a drive rod connected to the controller. The forward and backward movement of the driving rod is controlled, and the driving rod is slidably connected with the swing rod 30 .

When the coupler is connected, the automatic unhooking devices of railway freight cars on both sides are close to each other. When the contact is made, the micro switch is pressed by the external force of the fixing device, and an open control signal is sent to the controller. The controller controls the driving rod to move backward. Drive the swing rod 30 to swing backward, and at the same time, the safety cover 9 swings backward to leak out the electrical connection joint 8; when the coupler is removed, the automatic removal and hanging devices of the railway freight cars on both sides are far away from each other, at this time, the micro switch is automatically reset and sent to the controller An off control signal, the controller controls the drive rod to move forward, driving the swing rod 30 to swing forward, and the safety cover 9 swings forward to cover the electrical connection joint 8 simultaneously.

Embodiment Four

The difference between this embodiment and Embodiment 1 is that the air duct connection device includes an air duct union 13 disposed in the first through hole, an electric control valve disposed in the air duct union 13, and an electric valve disposed on the fixing device. control switch, one end of the air pipe joint 13 is connected to the air pipe, and the other end is provided with an external thread to be threadedly connected with the first through hole 3, and the outer end surface of the first through hole 3 is provided with a sealing ring, which is used to seal the air when the carriage is connected. road. When the electric control switch is turned on, the electric control valve is opened, and the air path is connected; when the electric control switch is turned off, the electric control valve is closed, and the air path is blocked.

Wherein, the electric control valve is closely combined with the air pipe joint 13; the electric control switch is arranged on the fixing device 17, preferably a micro switch. When the couplers are connected, the automatic detachment devices of railway freight cars on both sides move towards each other with the couplers. When they touch each other, the first through holes on the two couplers are connected, and the micro switch is affected by the force of the fixing device on the other coupler. When it is pressed, the circuit is connected, the control valve is opened, and the air path is connected at this time; when the coupler is removed, the fixing devices on both sides move in opposite directions, the micro switch is reset, and the control valve is closed at this time, and the air path is blocked .

The automatic detachment device for railway wagons in this embodiment guides the accurate docking of the interface through the centering guide device on the fixing device when the coupler is connected, and automatically opens the air circuit and circuit, and automatically closes the air circuit and circuit when the coupler is detached. circuit, thus realizing the purpose of shortening the unhooking operation time, saving labor costs and improving the personal safety index.

The above descriptions are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Without departing from the scope of the technical solution of the utility model, the technicians of this patent may use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes, but all do not depart from the content of the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the solution of the utility model.

Claims (11)

1. a railway truck automatic picking off and hanging device, is characterized in that, comprises

Anchor fitting, is arranged on hitch, is provided with the first through hole and the second through hole;

The wind path connecting device be connected with airduct, comprises and is slidably located at for the valve rod that seals the first through hole and the valve rod spring be installed in the first through hole in the first through hole, described valve rod spring and valve rod inconsistent,

Connecting the circuit connecting mechanism of electric wire, comprising electric connecting joint and the protective unit for isolating electric connecting joint.

2. a kind of railway truck automatic picking off and hanging device according to claim 1, it is characterized in that, described first through hole is notch cuttype through hole, ecto-entad comprises one-level reducing hole, secondary reducing hole and three grades of reducing holes successively, and the internal diameter in described secondary reducing hole is less than the internal diameter in three grades of reducing holes and is greater than the internal diameter in one-level reducing hole.

3. a kind of railway truck automatic picking off and hanging device according to claim 2, it is characterized in that, described valve rod is I shape, comprise the connecting portion of the first sealing, the second sealing and the middle undergauge laying respectively at two ends, the outer face in described first sealing and one-level reducing hole closely cooperates, and the end face of described second sealing and secondary reducing hole and three grades of reducing hole intersections closely cooperates.

4. a kind of railway truck automatic picking off and hanging device according to claim 3, it is characterized in that, described valve rod also comprises the location division be arranged on connecting portion, between the first sealing and the second sealing, the external diameter of described location division and the diameter compatible of secondary reducing close, and location division is provided with breather port.

5. a kind of railway truck automatic picking off and hanging device according to claim 1, it is characterized in that, described wind path connecting device also comprises the valve stem sleeve be fixed in the first through hole, inconsistent with valve rod spring, and the outer wall of valve stem sleeve is provided with breather port.

6. a kind of railway truck automatic picking off and hanging device according to claim 1, is characterized in that, described protective unit comprises the actuating device be connected with anchor fitting and the driving device be connected with electric connecting joint, and described actuating device is connected with driving device.

7. a kind of railway truck automatic picking off and hanging device according to claim 6, it is characterized in that, described anchor fitting is provided with the second through hole, and described actuating device comprises and is arranged on U-shaped bar in the second through hole and retracing spring, and described retracing spring is enclosed within U-shaped bar.

8. a kind of railway truck automatic picking off and hanging device according to claim 7, is characterized in that, described U-shaped bar one end is arranged in the second through hole and extends to outside the second through hole end face, the other end and driving device sliding block joint.

9. a kind of railway truck automatic picking off and hanging device according to claim 8, it is characterized in that, described driving device comprises a Safety hood, and described Safety hood is provided with swing arm, and with U-shaped bar sliding block joint, described swing arm is also hinged with electric connecting joint.

10. a kind of railway truck automatic picking off and hanging device according to claim 9, it is characterized in that, one end that described U-shaped bar is connected with swing arm is provided with sliding shoe, and described swing arm is provided with sliding recess, and described sliding shoe can slide along sliding recess.

11. a kind of railway truck automatic picking off and hanging devices according to claim 1, it is characterized in that, described anchor fitting is provided with the location aligning gear accurately docked for steering circuit automatic picking off and hanging device, and described location aligning gear comprises positioning convex and detent.