Railway vehicle front end opening and closing mechanism and railway vehicle

Abstract

The utility model provides a railway vehicle front end opening and closing mechanism and a railway vehicle. The opening and closing mechanism comprises a base; the cabin door is rotationally mounted on the base and comprises a first side cabin door and a second side cabin door which can be opened and closed relatively; the vehicle end connecting frame and the base are arranged at intervals, and the vehicle end connecting frame is connected with a vehicle; the energy absorption device is mounted between the base and the vehicle end connecting frame, is opposite to the cabin door and is positioned on one side close to the vehicle body; the energy absorption device comprises an energy absorption pipe. The front end opening and closing mechanism for the railway vehicle is based on the energy absorption pipe and has an overload energy absorption function, the energy absorption structure is triggered when the collision impact load of the train reaches the peak load of the structure, and the stability of the train in the energy absorption process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and relates to a front opening and closing mechanism for a rail vehicle and a rail vehicle. Background Art

[0002] The front-end components of a train include a front opening and closing mechanism, a coupler, an anti-climbing and energy-absorbing device, etc. In the past, when calculating the collision energy at the vehicle level, only the coupler and the anti-climbing device were considered, and the installation position of the front opening and closing mechanism was designed to be a shearable and retractable form that did not participate in the energy absorption of the train, thus approximately ignoring the influence of the front opening and closing mechanism on the vehicle-level energy absorption.

[0003] However, experimental studies have shown that the front opening and closing mechanism can absorb collision energy during a train collision. In particular, the influence of the metal frame of the front opening and closing mechanism on the energy absorption of the entire train cannot be ignored, mainly reflected in two aspects: First, the metal frame of the front opening and closing mechanism usually adopts a metal welded structure with relatively high stiffness, and is usually located in front of the train's anti-climbing and energy-absorbing device. After the two side front opening and closing mechanisms come into contact during a train collision, it may affect the normal functioning of the energy-absorbing device; Second, when the metal frame of the front opening and closing mechanism collides and deforms, it will absorb a certain amount of collision energy. However, when configuring the train's energy-absorbing device according to the existing technology, the energy-absorbing effect of the front opening and closing mechanism is usually not considered. Therefore, the train's energy-absorbing configuration usually has a large deviation from the actual requirements.

[0004] In the prior art, the train buffer energy-absorbing device is usually installed on the coupler part, and the front opening and closing mechanism usually does not have a buffer energy-absorbing device. Summary of the Invention

[0005] The purpose of the present invention is to solve one of the above technical problems, and provide a front opening and closing mechanism with an energy-absorbing structure to improve the safe operation performance of the train.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A front opening and closing mechanism for a rail vehicle, comprising:

[0008] A base;

[0009] A cabin door: rotatably installed on the base, including a first side cabin door and a second side cabin door that can be opened and closed relative to each other;

[0010] A car-end connecting frame, spaced from the base and connected to the vehicle in the use state;

[0011] An energy-absorbing device: installed between the base and the car-end connecting frame, and located on the side close to the vehicle body relative to the cabin door;

[0012] The energy-absorbing device includes an energy-absorbing tube.

[0013] In some embodiments of the present utility model, a shaving groove is provided on the outer wall of the energy absorption tube, and a shaving knife is installed on the vehicle end connection frame. The shaving knife is inserted into the shaving groove so that during the buffer energy absorption process, the shaving knife shaves the energy absorption tube to generate an energy absorption effect.

[0014] In some embodiments of the present utility model, it further includes a shaving knife seat. The shaving knife seat is installed on the vehicle end connection frame. The shaving knife seat includes an energy absorption tube hole, and the shaving knife is arranged around the orifice of the energy absorption tube hole, and the energy absorption tube passes through the energy absorption tube hole.

[0015] In some embodiments of the present utility model, a plurality of shaving grooves are provided along the outer peripheral wall of the energy absorption tube. The number of the shaving knives corresponds to the number of the shaving grooves, and each shaving knife is correspondingly inserted into one shaving groove.

[0016] The front-end opening and closing mechanism of a rail vehicle according to claim 1 or 2, characterized in that it includes a plurality of energy absorption tubes arranged in parallel.

[0017] In some embodiments of the present utility model, it includes a plurality of energy absorption tubes arranged in parallel. The shaving knife seat includes a plurality of energy absorption tube holes, and each energy absorption tube is inserted into one energy absorption tube hole.

[0018] In some embodiments of the present utility model, the vehicle end connection frame includes a first installation beam and a second installation beam spaced from the first installation beam. The shaving knife seat is installed on the first installation beam. In the use state, one end of the second installation beam is connected to the vehicle body.

[0019] In some embodiments of the present utility model, a support seat is further provided on the energy absorption tube. The opening and closing mechanism further includes a rotating bracket. One end of the rotating bracket is rotatably installed on the support seat, and the other end is rotatably connected to the hatch door.

[0020] In some embodiments of the present utility model, anti-climbing teeth are provided at the installation end of the energy absorption tube and the base.

[0021] A rail vehicle includes the front-end opening and closing mechanism of the rail vehicle as described above.

[0022] Compared with the prior art, the beneficial effects of the opening and closing mechanism provided by the present utility model are as follows:

[0023] 1. The present utility model provides a front-end opening and closing mechanism for a rail vehicle with an overload energy absorption function. When the train collision impact load reaches the structural peak load, the energy absorption tube is triggered, avoiding the influence of the excessive rigidity of the metal framework of the front-end opening and closing mechanism on the function of the train energy absorption device, and improving the stability of the train energy absorption process.

[0024] 2. Effectively solve the problem that the collision energy calculation is inaccurate in the prior art due to neglecting the energy absorption effect of the metal frame structure carrying the front opening and closing mechanism during collision, and improve the accuracy and rationality of the train energy absorption configuration.

[0025] 3. The present utility model combines the load-bearing and motion functions of the front opening and closing mechanism with the energy absorption function of the energy absorption device, which can simplify the requirements for the train energy absorption configuration, and even can simplify or cancel devices such as coupler buffer energy absorption or anti-climbing energy absorption, greatly reducing the train weight and the operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic diagram of the installation state of the energy absorption pipe of the opening and closing mechanism and the car body end mounting bracket (single energy absorption pipe).

[0028] Figure 2 It is a schematic diagram of the structure of the energy absorption pipe.

[0029] Figure 3 It is a schematic diagram of the installation state of the energy absorption pipe of the opening and closing mechanism and the car body end mounting bracket (multiple energy absorption pipes).

[0030] Figure 4 It is a schematic diagram of the overall structure of the opening and closing mechanism.

[0031] 1 - Base;

[0032] 201 - First side door, 202 - Second side door;

[0033] 3 - Car body end connecting bracket, 301 - First mounting beam, 302 - Second mounting beam;

[0034] 4 - Energy absorption pipe, 401 - Milling groove;

[0035] 5 - Anti-climbing teeth;

[0036] 6 - Milling cutter, 601 - Milling cutter seat, 602 - Through hole;

[0037] 7 - Support seat;

[0038] 901 - First bracket, 902 - Second bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] In the description of the present application, it should be noted that the fixed connection described in the present application can be a detachable fixed connection or an integral fixed connection; the indicated orientation or positional relationship is based on the positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] Belonging to "first" and "second" are only used for descriptive purposes and do not imply relative importance.

[0042] The first embodiment of the present utility model provides a front-end opening and closing mechanism for a rail vehicle, which is installed at the front end of the rail vehicle.

[0043] Refer to Figure 1 , in some schematic embodiments of the present utility model, the front-end opening and closing mechanism of the rail vehicle includes:

[0044] A base 1, serving as a support structure for the entire opening and closing mechanism, which can usually adopt a metal framework.

[0045] A hatch door 2, rotatably installed on the base 1, including a first side hatch door 201 and a second side hatch door 202 that can be opened and closed relative to each other, and the two hatch doors are symmetrically arranged.

[0046] A car-body end connecting frame 3, arranged at an interval from the base 1, and connected to the vehicle in the use state.

[0047] An energy absorption device: installed between the base 1 and the car-body end connecting frame 3, and located on the side close to the vehicle body relative to the hatch door. Usually, the hatch door 2 is installed on the upper end surface of the base 1, and the energy absorption device is installed on the side close to the ground and arranged parallel to the ground. In this embodiment, the energy absorption device is an energy absorption tube 4.

[0048] When a vehicle collision occurs, the collision is transmitted from the hatch door base 1 to the car-body end connecting frame 3, and then transmitted from the car-body end connecting frame 3 to the energy absorption tube 4, and the energy absorption tube 4 deforms to absorb energy.

[0049] In order to construct the energy absorption structure of the energy absorption tube, in some embodiments of the present utility model, a shaving groove 401 is provided on the outer wall of the energy absorption tube 4, and a shaving knife 6 is installed on the car-body end connecting frame. The shaving knife 6 is inserted into the shaving groove 401 to generate an energy absorption effect when the shaving knife 6 shaves the energy absorption tube during the buffer energy absorption process.

[0050] In some embodiments of the present utility model, a plurality of shaving grooves 401 are provided along the outer peripheral wall of the energy absorption tube 4. Specifically, the shaving grooves 401 are arranged along the circumference of the outer wall of the energy absorption tube 4 and are evenly distributed. The shaving knife 6 includes a shaving knife seat 601 installed on the vehicle end connection frame. A through hole 602 is provided on the shaving knife seat 601. The shape of the through hole 602 matches the shape of the energy absorption tube 4. The energy absorption tube 4 passes through the through hole 602, and a plurality of cutting edges are provided around the circumference of the through hole 602. Each cutting edge is correspondingly arranged in a shaving groove 405.

[0051] In order to improve the buffer energy absorption performance, multiple groups of energy absorption tubes 4 can be selected. Multiple energy absorption tubes 4 are arranged side by side. Correspondingly, a plurality of through holes 602 are provided on the knife seat 601, and a plurality of cutting edges are provided at each through hole 602. The width of the knife seat 601 and the number of through holes 602 on the knife seat 601 can be expanded according to the number of energy absorption tubes 4.

[0052] In order to improve the safety of the buffer energy absorption structure during vehicle collision, anti-climbing teeth 5 are provided at the installation end of the energy absorption tube 4 and the base 1. When two trains with the front-end opening and closing mechanism described in this embodiment collide, the anti-climbing teeth 5 at the front ends of the two side retractable energy absorption structures can be engaged to ensure that the load is transmitted longitudinally along the energy absorption structure.

[0053] In some embodiments of the present utility model, the vehicle end connection frame 3 includes a first installation beam 301 and a second installation beam 302 spaced from the first installation beam 301. The shaving knife seat 601 is installed on the first installation beam 301. In the use state, one end of the second installation beam 302 is connected to the vehicle body. The first installation beam 301 and the second installation beam 302 are assembled through a frame beam.

[0054] In some embodiments of the present utility model, a support seat 7 is further provided on the energy absorption tube 4. The opening and closing mechanism further includes a rotating bracket. One end of the rotating bracket is rotatably installed on the support seat 7, and the other end is rotatably connected to the hatch door. Specifically, the rotating bracket includes a first bracket and a second bracket. The first bracket 801 is rotatably connected to the support seat 7 and the first hatch door 201 respectively, and the second bracket 802 is rotatably connected to the support seat 7 and the second hatch door 202 respectively.

[0055] When the number of energy absorption tubes 4 increases, the width of the support seat 7 also increases accordingly to ensure that the support seat 7 has a matching relationship with each energy absorption tube 4.

[0056] In some embodiments of the present utility model, the energy absorption tube 4 is made of a metal material, such as steel, titanium alloy, aluminum alloy, etc., and steel material is preferably used. The metal material can ensure the structural stability of the opening and closing mechanism on the one hand and the energy absorption performance of the opening and closing mechanism on the other hand.

[0057] In some embodiments of the present utility model, the energy absorption tube 4 is made of a metal material, such as steel, titanium alloy, aluminum alloy, etc., and preferably steel material. On the one hand, the metal material can ensure the structural stability of the opening and closing mechanism and also ensure the energy absorption performance of the opening and closing mechanism.

[0058] The second embodiment of the present utility model provides a rail vehicle, including the front-end opening and closing mechanism of the rail vehicle in the above first embodiment. The opening and closing mechanism is arranged at the front end of each carriage of the rail vehicle, at the part where two carriages are coupled. Among them, the vehicle end connecting frame 3 is connected to the vehicle end, and the cabin door faces the vehicle to be coupled on the opposite side.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rail vehicle front end opening and closing mechanism, characterized in that: include: Base; Door: rotatably mounted on the base, including a first side door and a second side door that can be opened and closed relative to each other; The vehicle-end connecting frame is spaced apart from the base and connected to the vehicle when in use; Energy absorbing device: installed between the base and the vehicle end connecting frame, opposite to the hatch, on the side close to the vehicle body; The energy absorbing device comprises an energy absorbing tube.

2. The rail vehicle front end opening and closing mechanism according to claim 1, characterized in that: A planing groove is arranged on the outer wall of the energy absorbing tube, and a planing knife is installed on the vehicle end connecting frame. The planing knife is inserted into the planing groove, so that in the process of buffering energy absorption, the planing knife plans the energy absorbing tube to produce energy absorption effect.

3. The rail vehicle front end opening and closing mechanism according to claim 2, characterized in that: It further comprises a planing tool seat, which is mounted on the vehicle end connecting frame. The planing tool seat comprises an energy absorbing tube hole. The planing tool is arranged around the opening of the energy absorbing tube hole, and the energy absorbing tube passes through the energy absorbing tube hole.

4. The rail vehicle front end opening and closing mechanism according to claim 2 or 3, characterized in that: A plurality of planing grooves are arranged along the outer peripheral wall of the energy absorbing tube. The number of the planing knives corresponds to the number of the planing grooves, and each planing knife is correspondingly inserted into a planing groove.

5. The rail vehicle front end opening and closing mechanism according to claim 1 or 2, characterized in that: It includes a plurality of energy absorbing tubes arranged in parallel.

6. The rail vehicle front end opening and closing mechanism according to claim 3, characterized in that: It comprises a plurality of energy absorbing tubes arranged in parallel, the planing tool seat comprises a plurality of energy absorbing tube holes, and each energy absorbing tube is inserted into one of the energy absorbing tube holes.

7. The rail vehicle front end opening and closing mechanism according to claim 1, characterized in that: The vehicle end connecting frame includes a first mounting beam and a second mounting beam spaced apart from the first mounting beam, the planing tool holder is mounted on the first mounting beam, and one end of the second mounting beam is connected to the vehicle body in a use state.

8. The rail vehicle front end opening and closing mechanism according to claim 1 or 5, characterized in that: A support seat is further provided on the energy absorbing tube, and the opening and closing mechanism also includes a rotating bracket, one end of the rotating bracket is rotatably mounted on the support seat, and the other end is rotatably connected to the cabin door.

9. The rail vehicle front end opening and closing mechanism according to claim 1, characterized in that: The installation ends of the energy absorbing tube and the base are provided with anti-climbing teeth.

10. A rail vehicle, characterized in that: It comprises the rail vehicle front end opening and closing mechanism as described in any one of claims 1 to 9.

Images