A rapid connection protection device for a vacuum decontamination unit of a motor train set

Abstract

The utility model discloses a kind of quick connecting protection devices of EMU vacuum decontamination unit, belong to railway EMU supporting equipment technical field, comprising: this main body, main body butt joint, equipment butt joint, breakable fixing, elastic driving part, sealing assembly and pulling piece.The main body butt joint is integrated in main body, with equipment butt joint adaptation, constitute the initial connection passage of device and vacuum decontamination unit;Breakable fixing one end is connected with the outside of main body, and one end is connected with equipment fixed end, and form the initial fixed structure that can break under external force drag.Elastic driving part one end is connected with the inner wall of main body, one end is connected with sealing assembly, pulling piece one end is connected with the middle part of breakable fixing, one end is connected with sealing assembly, sealing assembly adapts train blow-off port, can be breaked when breakable fixing, block blow-off port by pulling piece and elastic driving part effect.Train is not disconnected and starts, half silk fastening buckle and fastening ring forcibly separate, fundamentally prevent equipment drag damage and train damage.

Description

Technical Field

[0001] This utility model relates to the technical field of railway EMU supporting equipment, specifically a quick connection protection device for the vacuum sewage unloading unit of an EMU. Background Technology

[0002] Currently, the vacuum unloading unit of the high-speed train is rigidly connected to the train. This connection method has significant drawbacks. In the event of train departure, it is common for the vacuum unloading unit connector to be failed to be disconnected in time, or for the connector to be forgotten altogether. Once the train starts moving, the rigid connection will drag the entire vacuum unloading unit, causing damage not only to the unit but also potentially to the train itself, seriously threatening the safe operation of the train and posing a significant safety hazard.

[0003] Therefore, a connection device is needed that can automatically protect against the aforementioned risks. Utility Model Content

[0004] To address the problems of existing technologies, this utility model provides a quick-connect protection device for the vacuum sewage discharge unit of a high-speed train, comprising: main body; The main body docking component is integrated into the main body and can be adapted to connect with the equipment docking component for connecting the vacuum unloading unit equipment, forming the initial connection path between the device and the vacuum unloading unit. A breakable fastener, one end of which is connected to the outside of the main body and the other end of which is engaged with the fixed end of the vacuum unloading unit equipment to form the initial fixing structure of the device and the equipment, and the fixing structure can be broken under external force drag. An elastic drive component, one end of which is connected to the inner wall of the main body, and the other end of which is connected to a sealing assembly used to block the train's sewage outlet; A traction component, one end of which is connected to the middle of a breakable fixing component, and the other end of which is connected to a sealing component; the size of the sealing component is adapted to the train's sewage outlet so that when the breakable fixing component breaks, the traction action of the traction component and the driving force of the elastic drive component can be used to seal the train's sewage outlet.

[0005] Furthermore, the main body is a resin body; the resin body is made of resin material, the outer side of the main body is provided with a pre-set slot for fixing the half-thread fastener, the middle of the main body is provided with an axially penetrating installation hole to integrate a quick connector, the inner wall of the main body is provided with a fixing point for fixing the spring on the side near the train's sewage outlet, and the side wall of the main body is also provided with a reserved hole for the steel wire safety to pass through. The quick connector is fitted into the mounting hole in the middle of the main body and communicates with the sewage discharge channel inside the resin main body; One end of the semi-wire fastener is fitted into a pre-set slot on the outside of the resin body, and one end of the spring is fixed to a fixing point on the inner wall of the resin body.

[0006] Furthermore, the breakable fastener includes: a half-thread fastener and a fastening ring; One end of the semi-thread fastener is detachably connected to the outside of the resin body, and the other end is provided with external threads; One end of the fastening ring is provided with an internal thread that is compatible with the external thread of the half-thread fastening buckle, and the two are connected by thread engagement. The other end of the fastening ring is used to connect to the fixed end of the vacuum unloading unit equipment. The strength of the threaded connection between the semi-thread fastener and the fastening ring is lower than the traction force of the vacuum sewage unloading unit when the train starts.

[0007] Furthermore, the main body connector is a quick-connect coupling; the equipment connector is a butt joint. The quick connector is integrated in the middle of the resin body, with one end connected to the unloading channel inside the resin body and the other end protruding from the side of the resin body facing the vacuum unloading unit. One end of the connector is fixedly connected to the sewage discharge interface of the vacuum sewage discharge unit, and the other end is detachably adapted to the end of the quick connector that protrudes from the resin body, forming a sewage discharge passage between the vacuum sewage discharge unit and the train's sewage discharge port; when the train leaves, the connector remains on the vacuum sewage discharge unit, and the quick connector moves with the resin body and the train.

[0008] Furthermore, the elastic driving element is a spring; the sealing assembly is a sealing cover plate; One end of the spring is connected to a fixed point on the inner wall of the resin body, and the other end is connected to the top center of the sealing cover. The sealing cover is located inside the resin body on the side near the train's sewage outlet, and its size is adapted to the size of the train's sewage outlet.

[0009] Furthermore, the tensioning element is a steel wire safety device; One end of the steel wire safety device is connected to the middle of the half-wire fastener, and the other end passes through the reserved hole in the side wall of the resin body and is connected to the side of the sealing cover. The reserved hole is located at the line connecting the middle of the semi-thread fastener and the side of the sealing cover plate on the side wall of the resin body; When the half-thread fastener and the fastening ring break, the steel wire safety device can pull the sealing cover plate along the axis of the reserved hole to move it toward the train's sewage outlet.

[0010] Furthermore, the resin body is provided with a guide structure extending vertically inside; The guide structure is located on the inner wall of the resin body corresponding to both sides of the sealing cover plate, and the two sides of the sealing cover plate are slidably engaged with the guide structure.

[0011] The beneficial effects of this utility model are: This application uses a semi-threaded fastener and a fastening ring to form an initial fixed structure, which can be disconnected under external force. When the train is started without disconnecting from the vacuum sewage discharge unit, the semi-threaded fastener and fastening ring will be forcibly separated under the drag of the train's traction force, thereby fundamentally preventing damage to the vacuum sewage discharge unit equipment due to dragging, and also avoiding damage to the train due to dragging force. At the same time as disconnection, the steel wire safety pulls the sealing cover plate, and with the spring force and the weight of the sealing cover plate, it quickly seals the train's sewage outlet to ensure pressure maintenance. Furthermore, the equipment left at the joint and other components are carried with the train without affecting subsequent operations, solving the safety and operation problems caused by hard connections. Attached Figure Description

[0012] Figure 1 Explosion-proof schematic diagram of the protective device provided by this utility model; Figure 2 A schematic diagram of the internal structure of the protective device provided by this utility model.

[0013] Figure label: In the diagram: 1 is the sealing cover, 2 is the spring, 3 is the wire safety lock, 4 is the half-thread fastener, 5 is the fastening ring, 6 is the butt joint, and 7 is the quick coupling. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 This utility model provides a quick connection protection device for the vacuum sewage unloading unit of a high-speed train, comprising: main body; The main body is a resin body, which is made of resin material. The outer side of the main body is provided with a pre-set slot for fixing the half-thread fastener 4. The middle of the main body is provided with an axially penetrating installation hole to integrate the quick connector 7. The inner wall of the main body is provided with a fixing point for fixing the spring 2 on the side near the train's sewage outlet. The side wall of the main body is also provided with a reserved hole for the steel wire safety 3 to pass through. The quick connector 7 is embedded in the mounting hole in the middle of the main body and communicates with the sewage discharge channel inside the resin main body; One end of the semi-wire fastener 4 is fitted into a preset slot on the outside of the resin body, and one end of the spring 2 is fixed to a fixing point on the inner wall of the resin body. The resin body has a guide structure extending vertically inside; The guide structure is located on the inner wall of the resin body corresponding to both sides of the sealing cover plate 1, and the two sides of the sealing cover plate 1 are slidably engaged with the guide structure. The main body docking component is integrated into the main body and can be adapted to connect with the equipment docking component for connecting the vacuum unloading unit equipment, forming the initial connection path between the device and the vacuum unloading unit. The main connecting component is a quick connector 7; the equipment connecting component is a butt connector 6; The quick connector 7 is integrated in the middle of the resin body, with one end connected to the unloading channel inside the resin body and the other end protruding from the side of the resin body facing the vacuum unloading unit. One end of the connector 6 is fixedly connected to the sewage discharge interface of the vacuum sewage discharge unit, and the other end is detachably adapted to the end of the quick connector 7 that protrudes from the resin body, forming a sewage discharge passage between the vacuum sewage discharge unit and the train's sewage discharge port; when the train leaves, the connector 6 remains on the vacuum sewage discharge unit, and the quick connector 7 moves with the resin body and the train. A breakable fastener; one end of the breakable fastener is connected to the outside of the main body, and the other end is engaged with the fixed end of the vacuum unloading unit equipment to form the initial fixing structure of the device and equipment, and the fixing structure can be broken under external force drag. The breakable fastener includes: a half-thread fastener 4 and a fastening ring 5; One end of the semi-thread fastener 4 is detachably connected to the outside of the resin body, and the other end is provided with external threads; One end of the fastening ring 5 is provided with an internal thread that is compatible with the external thread of the half-thread fastening buckle 4. The two are connected by thread engagement. The other end of the fastening ring 5 is used to connect to the fixed end of the vacuum unloading unit equipment. The strength of the threaded connection between the semi-thread fastener 4 and the fastening ring 5 is lower than the traction force of the vacuum sewage unloading unit equipment when the train starts. One end of the semi-threaded fastener has a snap-fit ​​structure that matches the outer groove of the resin body for detachable connection, and the other end has an external thread on its outer circumference that matches the internal thread of the fastening ring 5.

[0016] One end of the fastening ring has an internal thread on its inner circumference that matches the external thread of the half-thread fastening buckle 4, and the thread depth is the same as the thread length of the half-thread fastening buckle 4. The other end is a flat connecting end with two symmetrical bolt holes, which are used to connect to the fixed end of the vacuum unloading unit equipment by bolts.

[0017] The mechanical strength of the material at the threaded connection between the semi-threaded fastener 4 and the fastening ring 5 is designed to be lower than the minimum traction force when the train starts, such as a breaking force of 5kN and a minimum traction force of 6kN when the train starts without disconnecting. This ensures that when the train starts without disconnecting, the two parts can be forcibly pulled apart along the threaded connection, and the fracture surface is flat without sharp burrs.

[0018] An elastic drive component, one end of which is connected to the inner wall of the main body, and the other end of which is connected to a sealing assembly used to block the train's sewage outlet; A traction component, one end of which is connected to the middle of a breakable fixing component, and the other end of which is connected to a sealing component; the size of the sealing component is adapted to the train's sewage outlet so that when the breakable fixing component breaks, the traction action of the traction component and the driving force of the elastic drive component can be used to seal the train's sewage outlet.

[0019] The elastic driving component is spring 2; the sealing assembly is sealing cover plate 1; One end of the spring 2 is connected to a fixed point on the inner wall of the resin body, and the other end is connected to the top center of the sealing cover plate 1. The sealing cover 1 is located inside the resin body on the side near the train's sewage outlet, and its size is adapted to the size of the train's sewage outlet.

[0020] The pulling component is a steel wire safety device 3; One end of the steel wire safety 3 is connected to the middle of the half-wire fastener 4, and the other end passes through the reserved hole in the side wall of the resin body and is connected to the side of the sealing cover plate 1. The reserved hole is located at the line connecting the middle of the semi-thread fastener 4 and the side of the sealing cover plate 1 on the side wall of the resin body; When the half-thread fastener 4 and the fastening ring 5 break, the steel wire safety 3 can pull the sealing cover 1 towards the train sewage outlet along the axis of the reserved hole. The resin body is the core load-bearing component of the device, and it is adapted to the connection port between the sewage outlet of the EMU train and the vacuum sewage unloading unit. Its outer side has a pre-set slot for fixing the half-thread fastener 4, and its middle section has an axially extending sewage unloading channel communicating with the train's sewage outlet. The inner wall near the train's sewage outlet has a protruding fixing point for fixing the spring 2, and the side wall also has a circular pre-drilled hole for the steel wire safety 3 to pass through. The quick connector 7 has a cylindrical structure, is embedded in the sewage unloading channel in the middle of the resin body, and fits seamlessly with the inner wall of the channel. One end of it communicates with the sewage unloading channel inside the resin body, and the other end protrudes from the resin body. On the side facing the vacuum unloading unit, it is used for connection with the connector 6; one end of the connector 6 is fixedly connected to the unloading interface of the vacuum unloading unit through welding or bolting, and the other end has a notch that matches the quick connector 7 protruding from one end of the resin body. The two are detachably connected by plugging and unplugging, forming an unloading passage between the vacuum unloading unit and the train's sewage outlet; one end of the semi-threaded fastener 4 is fastened to a pre-set groove on the outside of the resin body through a snap-fit ​​structure, with the snap-fit ​​protrusion matching the groove to ensure initial fixation stability, and the other end has an external thread on its outer circumference; one end of the fastening ring 5 has a thread on its inner circumference that matches the semi-threaded fastener. The external thread of the fastening buckle 4 is adapted to the internal thread, and the two are screwed together to form a detachable initial fixing structure. The other end of the fastening ring 5 is connected to the fixed end of the vacuum sewage discharge unit equipment by bolts, realizing the initial hard connection and fixing between the device and the sewage discharge unit equipment; one end of the spring 2 is fixed to the protruding fixing point on the inner wall of the resin body by bonding or welding, and the other end is connected to the top center position of the sealing cover plate 1 by bolts; the sealing cover plate 1 is a circular plate structure, and its diameter is perfectly matched with the inner diameter of the train sewage outlet with an error of no more than 2mm, ensuring that the sewage outlet is completely covered when sealed; the steel wire safety 3 is made of high-strength steel wire with a diameter of 2- 3mm, one end of which is fastened to the middle of the half-thread fastener 4 by a hanging ring, and the other end passes through the circular reserved hole on the side wall of the resin body with a diameter slightly larger than the diameter of the steel wire to avoid jamming. It is fastened to the side of the sealing cover plate 1 by a hanging ring. When the train starts without disconnecting the connection between this device and the vacuum sewage unloading unit, the threaded connection between the half-thread fastener 4 and the fastening ring 5 can be forcibly disconnected under the traction force of the train. At the same time, the steel wire safety 3 pulls the sealing cover plate 1. With the contraction force of the spring 2 and the weight of the sealing cover plate 1 itself, the sealing cover plate 1 moves towards the sewage outlet of the train and completes the sealing, realizing the dual functions of preventing dragging damage and sealing and pressure maintenance.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-connect protection device for a vacuum sewage discharge unit of a high-speed train, characterized in that, include: main body; The main body docking component is integrated into the main body and can be adapted to connect with the equipment docking component for connecting the vacuum unloading unit equipment, forming the initial connection path between the device and the vacuum unloading unit. A breakable fastener, one end of which is connected to the outside of the main body and the other end of which is engaged with the fixed end of the vacuum unloading unit equipment to form the initial fixing structure of the device and the equipment, and the fixing structure can be broken under external force drag. An elastic drive component, one end of which is connected to the inner wall of the main body, and the other end of which is connected to a sealing assembly used to block the train's sewage outlet; A traction component, one end of which is connected to the middle of a breakable fixing component, and the other end of which is connected to a sealing component; the size of the sealing component is adapted to the train's sewage outlet so that when the breakable fixing component breaks, the traction action of the traction component and the driving force of the elastic drive component can be used to seal the train's sewage outlet.

2. The quick-connect protection device for the vacuum sewage unloading unit of a high-speed train according to claim 1, characterized in that, The outer side of the main body is provided with a pre-set slot for fixing the half-thread fastener. The middle part of the main body is provided with an axially penetrating mounting hole to integrate a quick connector. The inner wall of the main body is provided with a fixing point for fixing the spring on the side near the train's sewage outlet. The side wall of the main body is also provided with a reserved hole for the steel wire safety to pass through. The quick connector is fitted into the mounting hole in the middle of the main body and communicates with the sewage discharge channel inside the resin main body; One end of the semi-wire fastener is fitted into a pre-set slot on the outside of the resin body, and one end of the spring is fixed to a fixing point on the inner wall of the resin body.

3. The quick-connect protection device for the vacuum sewage unloading unit of the EMU according to claim 2, characterized in that, The breakable fastener includes: a half-thread fastener and a fastening ring; One end of the semi-thread fastener is detachably connected to the outside of the resin body, and the other end is provided with external threads; One end of the fastening ring is provided with an internal thread that is compatible with the external thread of the half-thread fastening buckle, and the two are connected by thread engagement. The other end of the fastening ring is used to connect to the fixed end of the vacuum unloading unit equipment. The strength of the threaded connection between the semi-thread fastener and the fastening ring is lower than the traction force of the vacuum sewage unloading unit when the train starts.

4. The quick-connect protection device for the vacuum sewage unloading unit of a high-speed train according to claim 2, characterized in that, The main connecting component is a quick connector; the equipment connecting component is a butt connector. The quick connector is integrated in the middle of the resin body, with one end connected to the unloading channel inside the resin body and the other end protruding from the side of the resin body facing the vacuum unloading unit. One end of the connector is fixedly connected to the sewage discharge interface of the vacuum sewage discharge unit, and the other end is detachably adapted to the end of the quick connector that protrudes from the resin body, forming a sewage discharge passage between the vacuum sewage discharge unit and the train's sewage discharge port; when the train leaves, the connector remains on the vacuum sewage discharge unit, and the quick connector moves with the resin body and the train.

5. The quick-connect protection device for the vacuum sewage unloading unit of a high-speed train according to claim 3, characterized in that, The elastic driving component is a spring; the sealing assembly is a sealing cover plate; One end of the spring is connected to a fixed point on the inner wall of the resin body, and the other end is connected to the top center of the sealing cover. The sealing cover is located inside the resin body on the side near the train's sewage outlet, and its size is adapted to the size of the train's sewage outlet.

6. The quick-connect protection device for the vacuum sewage unloading unit of a high-speed train according to claim 5, characterized in that, The tensioning element is a steel wire safety device; One end of the steel wire safety device is connected to the middle of the half-wire fastener, and the other end passes through the reserved hole in the side wall of the resin body and is connected to the side of the sealing cover. The reserved hole is located at the line connecting the middle of the semi-thread fastener and the side of the sealing cover plate on the side wall of the resin body; When the half-thread fastener and the fastening ring break, the steel wire safety device can pull the sealing cover plate along the axis of the reserved hole to move it toward the train's sewage outlet.

7. The quick-connect protection device for the vacuum sewage unloading unit of a high-speed train according to claim 6, characterized in that, The resin body has a guide structure extending vertically inside; The guide structure is located on the inner wall of the resin body corresponding to both sides of the sealing cover plate, and the two sides of the sealing cover plate are slidably engaged with the guide structure.

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