WO2018090648A1

WO2018090648A1 - Rail vehicle and pipeline protection device thereof

Info

Publication number: WO2018090648A1
Application number: PCT/CN2017/092202
Authority: WO
Inventors: 吴振国; 李华; 付勇; 于跃斌; 吴荣坤; 邹怀森
Original assignee: 中车齐齐哈尔车辆有限公司; 北京驮丰高新科技股份有限公司
Priority date: 2016-11-18
Filing date: 2017-07-07
Publication date: 2018-05-24
Also published as: AU2017272329A1; CN106553659B; CN106553659A; NZ738219A; AU2017272329B2

Abstract

The present invention discloses a rail vehicle and a pipeline protection device thereof. The pipeline protection device comprises a support frame used to support a pipeline of a rail vehicle. A first rotating portion and a second rotating portion are disposed at two ends of the support frame, respectively. The first rotating portion and the second rotating portion respectively support a terminal base frame and a rotating base frame used to rotate the rail vehicle, and are rotatably connected, in a vertical plane and in a horizontal plane, to the terminal base frame and the rotating base frame, respectively. Regardless of being in a rotating process of the rotating base frame, or in a normal vehicle driving process, the support frame can provide to the pipeline with favorable supporting, prevent wearing of the pipeline resulting from contacting with the ground, eliminating a safety hazard caused by the wearing of the pipeline, and ensuring safety of rail vehicle operation.

Description

Railway vehicle and pipeline protection device thereof

This application claims priority to Chinese Patent Application No. 201611018868.X, filed on November 18, 2016, entitled "A Railway Vehicle and Its Pipeline Protection Device", the entire contents of which are incorporated by reference. In this application.

Technical field

The invention relates to the technical field of engineering machinery, in particular to a railway vehicle and a pipeline protection device thereof.

Background technique

There are various types of railway transport vehicles at home and abroad. In a typical railway transport vehicle, the underframe consists of two parts: an end fixed undercarriage and a rotating loading undercarriage, and the rotating loading undercarriage can fix the chassis at the opposite end. Move up and rotate around the vertical axis.

Generally, the above-mentioned railway vehicle's driving, braking, and hydraulic power source for driving the rotating loading chassis to be lifted and rotated are mounted on the end fixed chassis, and the rotary load loading chassis is connected by a pipeline composed of a plurality of brake pipes and hydraulic pipes. control element. Typically the relationship is longitudinally disposed between the end fixed chassis and the rotary loading chassis.

In order to satisfy the rotating function of the rotating loading chassis, the length of the pipeline disposed between the end fixed chassis and the rotating loading chassis is necessarily greater than the linear distance between the hydraulic power source and the control component during normal transportation of the vehicle, that is, each line in the pipeline The pipeline is hung down on the bottom frame, so that when the vehicle is driving, the pipeline is extremely easy to contact with the ground, and is worn, causing leakage of hydraulic oil.

Therefore, how to improve the structure of the existing railway vehicle and avoid the wear of the pipeline and the ground disposed between the end fixed chassis and the rotating loading chassis is a technical problem to be solved by those skilled in the art.

Summary of the invention

In order to solve the above technical problem, the present invention provides a pipeline protection device for a railway vehicle, including a bracket for supporting a pipeline of the railway vehicle, wherein both ends of the bracket are respectively provided with a first rotating portion and a second rotating portion, and the first rotating portion and the second rotating portion are respectively supported by The end chassis of the railway vehicle and the rotating chassis are rotated, and the two are rotatably connected in a vertical plane and a horizontal plane, and the bracket is telescopically extendable in the longitudinal direction.

When the pipeline guard provided by the present invention is applied to a railway vehicle, a pipeline connected between the end chassis and the rotating chassis can be supported on the bracket, and the bracket passes through the first rotating portion and the second end of the bracket The rotating portions are respectively fixed to the end chassis and the rotating chassis. Thus, when the rotating chassis of the railway vehicle is rotated relative to the end chassis relative to the jacking, the two ends of the bracket in the present invention pass through the first rotating portion and the second rotating portion, respectively, the end chassis and the rotating chassis. The rotation is rotatably connected in a vertical plane and a horizontal plane, and as the rotating chassis rotates, the bracket can be gradually elongated along the length direction, so that the rotation of the rotating chassis can be satisfied.

When the rotating chassis completes the loading and unloading rotation of the loading and unloading vehicle, the two ends of the bracket first rotate in the horizontal plane opposite the end chassis and the rotating chassis, and as the rotating chassis rotates, the length of the bracket gradually decreases to accommodate the vehicle. The length of the body and the requirement of rotation, when the rotating chassis rotates to the same linear position as the end chassis, the rotating chassis gradually falls back, and during the process of the rotating chassis gradually falling back, the opposite ends of the bracket are respectively rotated relative to each other. Rotate in a vertical plane and finally rotate the chassis to resume driving.

It can be seen from the above description that the bracket can play a good supporting role for the pipeline during the rotation of the rotating chassis or during the normal running of the vehicle, avoiding the contact wear between the pipeline and the ground, and eliminating the wear caused by the pipeline. The safety hazard ensures the safety of railway vehicles.

Optionally, the bracket has a receiving cavity, and a pipeline of the railway vehicle passes through and is supported by a bottom wall of the accommodating cavity.

Optionally, the bracket includes an upper guard plate and a lower guard plate, the lower guard plate is slidably supported on the upper guard plate, and the accommodating cavity is formed on a lower surface of the upper guard plate and the Between the upper surfaces of the lower guards, one of the upper guard and the lower guard is provided with the first rotating portion, and the other is provided with the second rotating portion.

Optionally, one of the upper guard plate and the lower guard plate is provided with a mounting slot, and the other is configured to slide Inside the mounting groove, and further comprising a self-lubricating wear-resistant member disposed inside the mounting groove, the upper guard plate and the lower guard plate are slidably connected by the self-lubricating wear-resistant member.

Optionally, the first pipeline fixing member and the second pipeline fixing member are both used for fixing the pipeline; the first pipeline fixing member and the second pipeline fixing member are both disposed inside the accommodating chamber and are respectively arranged At both ends of the accommodating cavity.

Optionally, the first rotating portion includes a vertical rotating shaft, and the vertical rotating shaft is rotatably supported by the fixed shaft on the end chassis; the bottom of the vertical rotating shaft further includes a hinged seat, the hinged seat Provided with a horizontal pin hole hingedly engaged with the upper guard plate through the pin shaft; or / and,

The second rotating portion includes a vertical rotating shaft, and the vertical rotating shaft is rotatably supported by the fixed shaft on the rotating chassis; the bottom of the second rotating portion further includes a hinged seat, and the hinged seat is provided with The lower guard is hingedly fitted with a horizontal pin hole through the pin.

Optionally, a locking device is further included, the locking device includes a locking pin, a locking hook, an elastic member and a connecting rod, the locking pin is laterally disposed at a non-end position of the bracket, and the connecting rod is longitudinally disposed and Supported on the rotating chassis, and the elastic member is press-fitted between the connecting rod and the rotating chassis; the locking hook is disposed at an end of the connecting rod near the locking pin; The end chassis is further provided with an abutting portion that cooperates with the other end of the connecting rod, and when the rotating chassis is lifted upward, the end of the connecting rod is separated from the abutting portion, The connecting rod drives the locking hook to disengage the locking pin under the restoring force of the elastic member; when the rotating chassis falls back, the end portion of the connecting rod gradually abuts against the abutting portion, and compresses the In the elastic member, the locking hook is locked with the locking pin.

Optionally, a middle portion of the locking hook is hinged to the rotating chassis, the connecting rod is hinged with an upper end of the locking hook, and the rotating chassis is provided with a longitudinally extending sliding slot, the connecting rod At least partially sliding in the sliding slot.

Optionally, the two sides of the rotating chassis are provided with the sliding slot, and the end of the connecting rod is fixed with a cross bar, and both ends of the horizontal bar are provided with the hinge pin, two The hinge pins are respectively slidably disposed inside the two chutes.

Optionally, the sliding slot is an oblong hole formed on the rotating chassis, the connecting rod and the lock A hinge pin of the hook is disposed transversely inside the oblong hole.

Optionally, the connecting rod is hinged with a contact block near an end of the abutting portion, and the structure of the contact block and the abutting portion is an arc structure, and the contact block is further connected to the rotating bottom Hinged.

Further, the present invention provides a railway vehicle including an end chassis and a rotating chassis, and further comprising the pipeline guard according to any one of the above, wherein the pipeline guard passes through the first rotating portion and the first A second rotating portion is coupled to the end chassis and the rotating chassis.

Since the railway vehicle includes the above-described pipeline guard, the railway vehicle also has the above-described technical effects of the pipeline guard.

DRAWINGS

1 is a schematic structural view of a pipeline guard device according to a specific embodiment of the present invention;

Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

Figure 3 is a cross-sectional view taken along line B-B of Figure 1;

Figure 4 is a cross-sectional view taken along line C-C of Figure 1;

Figure 5 is a schematic structural view of a second rotating portion in a specific embodiment of the present invention;

6 is a schematic structural view of a pipeline guard device according to another embodiment of the present invention;

Figure 7 is an enlarged schematic view of a portion A in Figure 6;

Figure 8 is an enlarged schematic view of a portion B in Figure 6;

Figure 9 is a top plan view of Figure 6;

Figure 10 is a schematic view of the pipeline guard when the rotating chassis is in the jacked state.

The one-to-one correspondence between the component names and the reference numerals in Figure 1-10 is as follows:

Bracket 1, upper guard 11, mounting groove 111, lower guard 12, self-lubricating wear-resistant member 13, first line fixing member 15, second line fixing member 16, end chassis 2, fixed shaft 21, and The base 22, the rotating chassis 3, the fixed shaft 31, the vertical fixing plate 32, the sliding groove 3a, the connecting rod 41, the fixing plate 411, the locking hook 42, the lock pin 43, the elastic member 44, the contact block 45, and the cross bar 46 The vertical shaft 51, the hinge seat 52, and the pin shaft 53.

detailed description

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a pipeline protection device according to a specific embodiment of the present invention.

The present invention provides a pipeline guard for a railway vehicle, the device comprising a bracket 1 for supporting a pipeline of a railway vehicle, the pipeline described herein being connected to the end chassis 2 and the rotating chassis 3 A pipeline consisting of a brake pipe and a hydraulic pipe. Both ends of the bracket 1 are respectively provided with a first rotating portion and a second rotating portion, and the first rotating portion and the second rotating portion are respectively supported by the end chassis 2 and the rotating chassis 3 of the railway vehicle, and correspondingly Rotating connection in a vertical plane and a horizontal plane, that is, the first rotating portion and the end chassis 2 are rotatably connected in a vertical plane and a horizontal plane, and the second rotating portion and the rotating chassis 3 are in a vertical plane and a horizontal plane. Rotate the connection inside.

The first rotating portion and the second rotating portion may both be a universal joint structure. Taking the first rotating portion as an example, the first rotating portion may include a vertical rotating shaft, and the end chassis 2 is provided with a rotating sleeve that is rotatably coupled with the vertical rotating shaft. The fixed shaft and the axial direction of the fixed shaft are also vertical. When installed, the vertical shaft is rotatably supported inside or outside the fixed shaft. The first rotating portion further includes a hinge seat, and the hinge seat is provided with a horizontal hinge hole. Correspondingly, the end chassis 2 is provided with a hinge hole or a hinged joint with the horizontal hinge hole through the pin shaft, and the first rotating portion passes through the horizontal The pin is hinged to the end chassis 2. The structure of the second rotating portion may be the same as or different from the structure of the first rotating portion as long as the rotation of the rotating portion relative to the corresponding chassis in the vertical plane and the horizontal plane can be achieved.

The bracket 1 in the present invention is stretchable in the longitudinal direction, that is, the bracket 1 can be relatively elongated or shortened in the direction in which the length of the bracket 1 extends.

When the pipeline guard provided by the present invention is applied to a railway vehicle, a pipeline connected between the end chassis 2 and the rotating chassis 3 can be supported on the bracket 1, and the first rotation of the bracket 1 through the both ends thereof The second portion and the second rotating portion are fixed to the end chassis 2 and the rotating chassis 3, respectively. Thus, when the rotating chassis 3 of the railway vehicle is rotated relative to the end chassis 2, the both ends of the bracket 1 of the present invention pass through the first rotating portion and the second rotating portion and the end chassis 2, respectively. And rotating the chassis 3 in vertical and horizontal planes The rotation is connected, and as the rotary chassis 3 rotates, the bracket 1 can be gradually elongated in the longitudinal direction, so that the rotation of the rotary chassis 3 can be satisfied.

When the rotating chassis 3 completes the loading and unloading rotation recovery driving state, both ends of the bracket 1 are first rotated in the horizontal plane opposite the end chassis 2 and the rotating chassis 3, and the length of the bracket 1 is rotated with the rotating chassis 3 Gradually decreasing to adapt to the length of the vehicle body and satisfying the rotation requirement, when the rotating chassis 3 is rotated to be in the same linear position as the end chassis 2, the rotating chassis 3 gradually falls back, and during the process in which the rotating chassis 3 gradually falls back, Both end portions of the bracket 1 are respectively rotated in a vertical plane with respect to the rotational point, and finally the rotating chassis 3 is returned to the running state.

It can be seen from the above description that the carrier 1 can play a good supporting role for the pipeline during the rotation of the rotating chassis 3 or during the normal running of the vehicle, avoiding the contact wear between the pipeline and the ground, and eliminating the pipeline. Safety hazards caused by wear and tear, to ensure the safety of railway vehicles.

Specifically, the bracket 1 may have a receiving cavity through which the pipeline of the railway vehicle passes and is supported on the bottom wall of the accommodating cavity, that is, the pipeline leading from the end chassis 2, and the free end thereof passes through the accommodating cavity to connect the rotating bottom. The frame 3, that is to say, at least part of the pipe section of the pipeline is located inside the accommodating chamber. The accommodating cavity can not only play a better supporting role, but also the accommodating cavity can play a certain protective role.

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is a cross-sectional view taken along line B-B of FIG.

Specifically, the bracket 1 includes an upper guard 11 and a lower guard 12, and the lower guard 12 is supported on the upper guard 11 in the longitudinal direction, and the accommodation cavity is formed on the inner surface of the upper guard 11 and the lower guard 12 Between the upper surfaces. One of the upper guard plate 11 and the lower guard plate 12 is provided with a mounting groove 111, and the other is slidably disposed inside the mounting groove 111, and further includes a self-lubricating wear-resistant member 13 disposed inside the mounting groove 111, and the upper guard plate 11 The lower guard 12 is slidably coupled by the self-lubricating wear member 13. Specifically, it is preferable that the upper guard plate 11 is provided with a longitudinally extending mounting groove 111, and the lower guard plate 12 is slidably disposed inside the mounting groove 111. One of the upper guard 11 and the lower guard 12 is provided with a first rotating portion, and the other is provided with a second rotating portion.

The upper guard plate 11 and the lower guard plate 12 realize the expansion and contraction in the longitudinal direction by sliding pulling, and the structure is simple and easy to implement.

Please refer to FIG. 5. FIG. 5 is a schematic structural view of a second rotating portion according to a specific embodiment of the present invention.

For the structure of the upper guard plate 11 and the lower guard plate 12, the first rotating portion and the second rotating portion may specifically be: the first rotating portion includes a vertical rotating shaft, and the vertical rotating shaft is rotatably supported by the fixed shaft 21 on the end chassis 2 The bottom of the vertical shaft further includes a hinge seat, and the hinge seat is provided with a horizontal pin hole that is hingedly engaged with the upper guard 11 through the pin shaft; or/and,

The second rotating portion may include a vertical rotating shaft 51, and the vertical rotating shaft 51 is rotatably supported by the fixed shaft 31 on the rotating chassis 3; the bottom of the second rotating portion further includes a hinge seat 52 on which the lower guard plate is disposed 12 is a horizontal pin hole that is hingedly engaged by a pin 53.

The end of the lower fender 12 is provided with a self-lubricating wear-resistant member 13, and the two side walls of the lower fender 12 are slidably coupled to the groove wall of the mounting groove 111 by the self-lubricating wear-resistant member 13. The self-lubricating wear-resistant member 13 can reduce the sliding wear between the upper fender 11 and the lower fender 12, and improve the service life of the upper fender 11 and the lower fender 12.

In the above embodiments, the pipeline guard device may further include a first pipeline fixing member 15 and a second pipeline fixing member 16 for fixing the pipeline; the first pipeline fixing member 15 and the second pipeline fixing member 16 are both placed in the accommodating chamber. The insides are respectively disposed at both ends of the accommodating cavity.

The first line fixing member 15 and the second line fixing member 16 may be fixed to the upper guard plate 11 or the lower guard plate 12 by bolts or welding.

The first rotating portion and the second rotating portion may be a universal joint structure.

The bracket 1 in the above embodiment is supported only on the end chassis 2 and the rotating chassis 3 through both end portions. Since the length of the frame is relatively long, the length of the bracket 1 is correspondingly long, when the vehicle is in normal driving. In the state, the bracket 1 may vibrate relative to the frame, affecting the normal running of the vehicle. Therefore, the present invention has made the following improvements to the pipeline guard.

Please refer to FIG. 6 to FIG. 10; FIG. 6 is a schematic structural view of a pipeline protection device according to another embodiment of the present invention; FIG. 7 is an enlarged schematic view of a portion A in FIG. 6; 9 is a schematic plan view of FIG. 6; and FIG. 10 is a schematic view of the pipeline guard when the rotating chassis 3 is in the jacked state.

The pipeline guard of each of the above embodiments further includes a locking device including a locking pin 43. The locking hook 42, the elastic member 44 and the connecting rod 41, the locking pin 43 is laterally disposed at the non-end position of the bracket 1, the connecting rod 41 is longitudinally disposed and supported on the rotating chassis 3, and the connecting rod 41 and the rotating bottom The elastic member 44 is press-fitted between the frame 3; the locking hook 42 is disposed at an end of the connecting rod 41 near the locking pin 43; and the end chassis 2 is further provided with an abutting portion 22 that cooperates with the other end of the connecting rod 41. When the rotating chassis 3 is lifted upward, the end of the connecting rod 41 is disengaged from the abutting portion 22, and under the restoring force of the elastic member 44, the connecting rod 41 drives the locking hook 42 to disengage from the locking pin 43; when the rotating chassis 3 falls back At this time, the end portion of the link 41 gradually abuts against the abutting portion 22, and compresses the elastic member 44, and the lock hook 42 cooperates with the lock pin 43 to lock. The abutment portion 22 can be disposed on the fixed shaft 21 of the end chassis 2.

When the vehicle is in the normal driving state, the middle portion of the bracket 1 can be locked to the lock pin 43 by the lock hook 42, thereby realizing the positioning of the middle portion of the bracket 1 and the rotating chassis 3; when the rotating chassis 3 is rotated upward, During the upward lifting of the rotating chassis 3, the connection of the connecting hook 42 is disengaged from the abutting portion 22, and the locking hook 42 is disengaged from the locking pin 43, thereby unlocking the bracket 1 and the rotating chassis 3, and the bracket 1 can be realized. With the action of the rotating chassis 3.

In a specific embodiment, the middle portion of the locking hook 42 can be hinged to the rotating chassis 3, the connecting rod 41 is hinged with the upper end of the locking hook 42, and the rotating chassis 3 is provided with a longitudinally extending sliding slot, and the connecting rod 41 is at least Part of the slide is set in the chute.

The elastic member 44 may be a spring such as a coil spring or the like. Specifically, in a specific embodiment, the elastic member 44 is installed in such a manner that a vertical fixing plate 32 is disposed on the rotating chassis 3, a fixing plate 411 is disposed on the connecting rod 41, and the elastic member 44 is press-fitted to the vertical fixing. Between the plate 32 and the fixing plate 411 of the connecting rod 41, the elastic member 44 is taken as a coil spring, and the coil spring can be fitted on the connecting rod 41.

In order to ensure that the connecting rod 41 is moved in the longitudinal direction of the vehicle body, the sliding slot 3a may be an oblong hole formed on the rotating chassis 3, and the connecting pin 41 of the connecting rod 41 and the locking hook 42 is disposed inside the oblong hole. Specifically, the two sides of the rotating chassis 3 may be provided with a sliding slot 3a. The end of the connecting rod 41 is fixed with a crossbar 46. Both ends of the crossbar are provided with hinge pins, and the two hinge pins respectively respectively rotate with the rotating chassis 3. The sliding grooves on both sides are slidingly connected. This facilitates the stability of the lateral movement of the link 41.

In order to realize the fallback of the rotating chassis 3, the connecting rod 41 can smoothly cooperate with the abutting portion 22, and the connecting rod 41 A contact block may be hinged to the end of the abutting portion 22, and the structure in which the contact block cooperates with the abutting portion 22 is an arc structure, and the contact block is also hinged to the rotating chassis 3.

The invention further provides a railway vehicle comprising the pipeline protection device according to any of the above embodiments, wherein the pipeline protection device passes through the first rotating portion and the second rotating portion respectively. The end chassis 2 is coupled to the rotating chassis 3.

For details, please refer to the prior art for other structures of the railway vehicle, and no further details are provided herein.

The railway vehicle and its pipeline protection device provided by the present invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, and the description of the above embodiments is only to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

A pipeline guard device for a railway vehicle, comprising: a bracket (1) for supporting a pipeline of the railway vehicle, wherein both ends of the bracket (1) are respectively provided with a first rotating portion and a first portion a second rotating portion, the first rotating portion and the second rotating portion are respectively supported on an end chassis (2) and a rotating chassis (3) of the rotating railway vehicle, and the two are respectively in a vertical plane and a horizontal plane Rotating the connection, the bracket (1) is telescopic in the longitudinal direction.
A pipeline guard according to claim 1, wherein said bracket (1) has a receiving chamber through which a pipeline of said railway vehicle passes and is supported by a bottom wall of said receiving chamber.
A pipeline guard according to claim 2, wherein said bracket (1) comprises an upper guard (11) and a lower guard (12), said lower guard (12) being slidably supported by said On the upper guard plate (11), the accommodating cavity is formed between a lower surface of the upper guard plate (11) and an upper surface of the lower guard plate (12), the upper guard plate (11) and One of the lower guards (12) is provided with the first rotating portion, and the other is provided with the second rotating portion.
The pipeline guard according to claim 3, wherein one of said upper guard (11) and said lower guard (12) is provided with a mounting groove (111), and the other is slidably disposed at The inside of the mounting groove (111), and further comprising a self-lubricating wear-resistant member (13) disposed inside the mounting groove (111), the upper guard plate (11) and the lower guard plate (12) passing through The self-lubricating wear-resistant member (13) is slidably connected.
A pipeline guard according to claim 2, further comprising a first line fixing member (15) and a second line fixing member (16) for both fixing the line; said first line fixing member (15) And a second pipeline fixing member (16) are disposed inside the accommodating cavity and respectively disposed at both ends of the accommodating cavity.
A pipeline guard according to claim 3, wherein said first rotating portion comprises a vertical rotating shaft, said vertical rotating shaft being rotatably supported by said fixed end shaft on said end chassis (2); The bottom of the vertical shaft further includes a hinge seat provided with a horizontal pin hole hingedly engaged with the upper guard plate (11) through the pin shaft; or/and,

The second rotating portion includes a vertical rotating shaft, the vertical rotating shaft is rotatably supported by the fixed shaft on the rotating chassis (3); the bottom of the second rotating portion further includes a hinged seat on the hinged seat A horizontal pin hole is provided that is hingedly engaged with the lower guard (12) through the pin.
A pipeline guard according to any one of claims 1 to 6, further comprising a locking device comprising a lock pin (43), a lock hook (42), an elastic member (44) and a connecting rod (41), the lock pin (43) is laterally disposed at a non-end position of the bracket (1), and the link (41) is longitudinally disposed and supported on the rotating chassis (3), and The elastic member (44) is press-fitted between the connecting rod (41) and the rotating chassis (3); the locking hook (42) is disposed on the connecting rod (41) near the locking pin (43) an end portion; the end chassis (2) is further provided with an abutting portion that cooperates with the other end portion of the connecting rod (41), when the rotating chassis (3) is lifted upward When the end of the connecting rod (41) is disengaged from the abutting portion, the connecting rod (41) drives the locking hook (42) away from the abutting force under the restoring force of the elastic member (44) a locking pin (43); when the rotating chassis (3) falls back, the end of the connecting rod (41) gradually abuts against the abutting portion, and compresses the elastic member (44), the locking hook ( 42) Locked with the lock pin (43).
The pipeline guard according to claim 7, wherein a middle portion of the lock hook (42) is hinged to the rotating chassis (3), the connecting rod (41) and the locking hook (42) The upper end is hinged, and the rotating chassis (3) is provided with a longitudinally extending sliding slot (3a), and the connecting rod (41) is at least partially slidably disposed in the sliding slot (3a).
The pipeline guard device according to claim 8, wherein the sliding slot (3a) is an oblong hole formed in the rotating chassis (3), the connecting rod (41) and the locking hook The hinge pin of (42) is disposed transversely inside the oblong hole.
The pipeline guard device according to claim 8, wherein both sides of the rotating chassis (3) are provided with the sliding slot (3a), and the end of the connecting rod (41) is fixed with a crossbar (46), the institute Both ends of the crossbar (46) are provided with hinge pins, and the two hinge pins are respectively slidably disposed inside the two sliding grooves (3a).
The pipeline guard device according to claim 7, wherein a contact block (45) is hinged to an end of the connecting rod (41) near the abutting portion, and the contact block (45) is opposite to the abutting portion The structure in which the abutment (22) is fitted is an arcuate structure, and the contact block (45) is also hinged to the rotating chassis (3).
A railway vehicle comprising an end chassis (2) and a rotating chassis (3), characterized by further comprising the pipeline protection device according to any one of claims 1-11, wherein the pipeline protection device respectively The first rotating portion and the second rotating portion are coupled to the end chassis (2) and the rotating chassis (3).