AU2017272329A1 - Railway vehicle and pipeline protection device therefor - Google Patents

Abstract

English translation of PCT/CN2017/092202 A railway vehicle and a pipeline protection device thereof are provided according to the present application. The pipeline protection device includes a bracket configured to support a pipeline of the railway vehicle. Two ends of the bracket are respectively provided with a first rotating part and a second rotating part. The first rotating part and the second rotating part are respectively supported at an end underframe and a rotary underframe of the rotating railway vehicle, and the first rotating part and the second rotating part are respectively rotationally connected to the end underframe and the rotary underframe in a vertical plane and a horizontal plane. The bracket is extendable and retractable in a length direction. Whether during rotation of the rotary underframe or during normal running of the vehicle, the bracket may support the pipeline well, thus, the pipeline is prevented from being in contact with the ground and worn, and a safety risk caused by wear of the pipeline is eliminated, thereby ensuring running safety of the railway vehicle. - 17-

Description

RAILWAY VEHICLE AND PIPELINE PROTECTION DEVICE THEREFOR

[0001] The present application claims the benefit of priority to Chinese patent application No. 201611018868.X titled “RAILWAY VEHICLE AND PIPELINE PROTECTION DEVICE THEREFOR”, filed with the Chinese State Intellectual Property Office on November 18, 2016, which is incorporated herein by reference in its entirety.

FIELD

[0002] This application relates to the technical field of construction machinery, and in particular to a railway vehicle and a pipeline protection device therefor.

BACKGROUND

[0003] There are a variety of types of railway transport vehicles at home and abroad. An underframe of a typical railway transport vehicle includes two parts, including an end fixed underframe and a rotary loading underframe. The rotary loading underframe can be raised upward with respect to the end fixed underframe and then rotate round a vertical axis.

[0004] Generally, a hydraulic power supply, used in running and braking of the above railway vehicle and configured to drive the rotary loading underframe to be raised and rotated, is mounted at the end fixed underframe, and the hydraulic power supply is connected to a control element of the rotary loading underframe through a pipeline, and the pipeline is constituted by multiple brake pipes and multiple hydraulic pipes. Typically, the pipeline is arranged longitudinally between the end fixed underframe and the rotary loading underframe.

[0005] In order to enable the rotary loading underframe to have a rotation function, the length of the pipeline arranged between the end fixed underframe and the rotary loading underframe must be greater than a linear distance between the hydraulic power supply and the control element during normal transportation of the vehicle, that is, pipes in the pipeline are hung down from the underframe. In this way, when the vehicle is running, the pipes are very easy to come into contact with the ground to be worn, resulting in leakage of hydraulic oil and so on.

[0006] Therefore, an urgent technical issue to be addressed by the person skilled in the art is to improve the structure of the conventional railway vehicle, to prevent the pipeline arranged between the end fixed underframe and the rotary loading underframe from being worn by the ground.

SUMMARY

[0007] In order to solve the technical issue described above, a pipeline protection device for a railway vehicle is provided according to the present application. The pipeline protection device includes a bracket configured to support a pipeline of the railway vehicle, two ends of the bracket are respectively provided with a first rotating part and a second rotating part, the first rotating part and the second rotating part are respectively supported at an end underframe and a rotary underframe of the railway vehicle, and the first rotating part is rotationally connected to the end underframe in a vertical plane and a horizontal plane, the second rotating part is rotationally connected to the rotary underframe in the vertical plane and the horizontal plane; and the bracket is extendable and retractable in a length direction.

[0008] In the case that the pipeline protection device according to the present application is used in the railway vehicle, the pipeline connected between the end underframe and the rotary underframe may be supported on the bracket, and the bracket is fixed to the end underframe and the rotary underframe through the first rotating part and the second rotating part at two ends of the bracket respectively. In this way, when the rotary underframe of the railway vehicle is raised with respect to the end underframe and rotated, the bracket may be gradually extended in the length direction with rotation of the rotary underframe since the two ends of the bracket in the present application are respectively rotationally connected to the end underframe and the rotary underframe through the first rotating part and the second rotating part in the vertical plane and the horizontal plane, thereby meeting requirements for allowing lifting and lowering movements and rotation movement of the rotary underframe.

[0009] In the case that the rotary underframe is rotated to be returned to a running state after the vehicle is loaded or unloaded, the two ends of the bracket are first rotated in the horizontal plane with respect to the end underframe and the rotary underframe, and as the rotary underframe is rotated, the length of the bracket is gradually decreased to adapt to the length of a vehicle body and meet rotation requirements. When the rotary underframe is rotated to a position where it is in the same line as the end underframe, the rotary underframe gradually falls back. In the process that the rotary underframe gradually falls back, the two ends of the bracket are respectively rotated in the vertical plane with respect to respective rotation points, and finally the rotary underframe is returned to the running state.

[0010] It may be seen from the above description that, whether during rotation of the rotary underframe or during normal running of the vehicle, the bracket can support the pipeline well, thus, the pipeline is prevented from being in contact with the ground and worn, and a safety risk caused by wear of the pipeline is eliminated, thereby ensuring running safety of the railway vehicle.

[0011] Optionally, the bracket has an accommodation cavity, and the pipeline of the railway vehicle passes through the accommodation cavity and is supported at a bottom wall of the accommodation cavity.

[0012] Optionally, the bracket includes an upper shield plate and a lower shield plate, the lower shield plate is slidably supported on the upper shield plate, the accommodation cavity is formed between a lower surface of the upper shield plate and an upper surface of the lower shield plate, and one of the upper shield plate and the lower shield plate is provided with the first rotating part, and the other one of the upper shield plate and the lower shield plate is provided with the second rotating part.

[0013] Optionally, one of the upper shield plate and the lower shield plate is provided with a mounting groove, and the other one of the upper shield plate and the lower shield plate is slidably provided in the mounting groove and further includes a self-lubrication wear-resistant component provided inside the mounting groove, and the upper shield plate is slidably connected to the lower shield plate through the self-lubrication wear-resistant component.

[0014] Optionally, the pipeline protection device further includes a first pipeline fixation member and a second pipeline fixation member which are configured to fix the pipeline; and the first pipeline fixation member and the second pipeline fixation member are accommodated in the accommodation cavity and respectively provided at two ends of the accommodation cavity.

[0015] Optionally, the first rotating part includes a vertical rotating shaft, the vertical rotating shaft is rotationally supported at a fixed shaft of the end underframe, and a bottom portion of the vertical rotating shaft further includes a hinge base, and the hinge base is provided with a horizontal pin hole configured to be cooperatively hinged to the upper shield plate through a pin shaft; or/and, the second rotating part includes a vertical rotating shaft, the vertical rotating shaft is rotationally supported at a fixed shaft of the rotary underframe, a bottom portion of the second rotating part further includes a hinge base, and the hinge base is provided with a horizontal pin hole configured to be cooperatively hinged to the lower shield plate through a pin shaft.

[0016] Optionally, the pipeline protection device further includes a locking device. The locking device includes a lock pin, a lock hook, an elastic component and a connection rod, the lock pin is transversely provided on the bracket at a position other than ends of the bracket, the connection rod is longitudinally provided and supported on the rotary underframe, and the elastic component is press-fitted between the connection rod and the rotary underframe; the lock hook is provided at one end, close to the lock pin, of the connection rod; the end underframe is further provided with an abutment portion configured to cooperate with another end of the connection rod; and when the rotary underframe is raised upward, the end, configured to cooperate with the abutment portion, of the connection rod is disengaged from the abutment portion, and under a restoring force of the elastic component, the lock hook is driven by the connection rod to be disengaged from the lock pin; and when the rotary underframe falls back, the end, configured to cooperate with the abutment portion, of the connection rod is gradually abutted against the abutment portion to compress the elastic component, and the lock hook is in cooperation with and locked to the lock pin.

[0017] Optionally, a middle portion of the lock hook is hinged to the rotary underframe, the connection rod is hinged to an upper end of the lock hook, the rotary underframe is provided with a longitudinally extending slide slot, and at least a part of the connection rod is slidably provided in the slide slot.

[0018] Optionally, two of the slide slots are provided in two sides of the rotary underframe, a cross bar is fixed to a tail end of the connection rod, two hinge pins are provided at two ends of the cross bar, and the two hinge pins are slidably provided in the two slide slots respectively.

[0019] Optionally, the slide slot is an obround hole provided in the rotary underframe, and a hinge pin through which the connection rod is hinged to the lock hook is transversely arranged in the obround hole.

[0020] Optionally, a contact block is hinged to the end, close to the abutment portion, of the connection rod, the contact block has an arc-shaped structure for cooperating with the abutment portion, and the contact block is further hinged to the rotary underframe.

[0021] In addition, a railway vehicle is further provided according to the present application, which includes an end underframe and a rotary underframe, and further includes the pipeline protection device according to any one of the above aspects. The pipeline protection device is connected to the end underframe and the rotary underframe through the first rotating part and the second rotating part respectively.

[0022] Since the railway vehicle includes the above pipeline protection device, the railway vehicle also has the technical effects of the pipeline protection device described above.

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic view showing the structure of a pipeline protection device according to an embodiment of the present application; [0024] Figure 2 is a schematic sectional view taken along line A-A in Figure 1; [0025] Figure 3 is a schematic sectional view taken along line B-B in Figure 1; [0026] Figure 4 is a schematic sectional view taken along line C-C in Figure 1; [0027] Figure 5 is a schematic view showing the structure of a second rotating part according to an embodiment of the present application; [0028] Figure 6 is a schematic view showing the structure of a pipeline protection device according to another embodiment of the present application; [0029] Figure 7 is an enlarged schematic view of part A in Figure 6; [0030] Figure 8 is an enlarged schematic view of part B in Figure 6; [0031] Figure 9 is a schematic top view of Figure 6; [0032] Figure 10 is a schematic view of the pipeline protection device when a rotary underframe is in a raised state.

[0033] One-to-one correspondences between names of components and reference numerals in Figures 1 to 10 are as follows: 1 bracket, 11 upper shield plate, 111 mounting groove, 12 lower shield plate, 13 self-lubrication wear-resistant component, 15 first pipeline fixation member, 16 second pipeline fixation member, 2 end underframe, 21 fixed shaft, 22 abutment portion, 3 rotary underframe, 31 fixed shaft, 32 vertical fixation plate, 3a slide slot, 41 connection rod, 411 fixation plate, 42 lock hook, 43 lock pin, 44 elastic component, 45 contact block, 46 cross bar, 51 vertical rotating shaft, 52 hinge base, 53 pin shaft.

DETAILED DESCRIPTION OF EMBODIMENTS

[0034] In order to make the person in the art have a better understanding of technical solutions of the present application, the present application is further described in detail hereinafter in conjunction with the drawings and embodiments.

[0035] Reference is made to Figure 1, which is a schematic view showing the structure of a pipeline protection device according to an embodiment of the present application.

[0036] A pipeline protection device of a railway vehicle is provided according to the present application, and the pipeline protection device includes a bracket 1 configured to support a pipeline of the railway vehicle. The pipeline described herein is constituted by a brake pipe and a hydraulic pipe which are connected between an end underframe 2 and a rotary underframe 3. Two ends of the bracket 1 are respectively provided with a first rotating part and a second rotating part. The first rotating part and the second rotating part are respectively supported at the end underframe 2 and the rotary underframe 3 of the railway vehicle, and the first rotating part and the second rotating part are respectively rotationally connected to the end underframe 2 and the rotary underframe 3 in a vertical plane and a horizontal plane, that is, the first rotating part is rotationally connected to the end underframe 2 in both the vertical plane and the horizontal plane, and the second rotating part is rotationally connected to the rotary underframe 3 in both the vertical plane and the horizontal plane.

[0037] Each of the first rotating part and the second rotating part may be a universal joint structure. By taking the first rotating part as an example, the first rotating part may include a vertical rotating shaft. The end underframe 2 is provided with a fixed shaft, and the fixed shaft is rotationally muff-coupled to the vertical rotating shaft. An axial direction of the fixed shaft is also a vertical direction. In installing, the vertical rotating shaft is rotationally supported inside or outside the fixed shaft. The first rotating part further includes a hinge base, and the hinge base is provided with a horizontal hinge hole. Correspondingly, the end underframe 2 is provided with a hinge hole which is configured to be hinged to the horizontal hinge hole through a pin shaft, or, the first rotating part is hinged to the end underframe 2 through a transversal pin shaft. The structure of the second rotating part may be the same as or different from the structure of the first rotating part, as long as the rotating part may rotate in the vertical plane and the horizontal plane with respect to the corresponding underframe.

[0038] The bracket 1 in the present application is extendable and retractable in a length direction, that is, the bracket 1 may extend or retract in the length extension direction of the bracket 1.

[0039] In the case that the pipeline protection device according to the present application is used in the railway vehicle, the pipeline connected between the end underframe 2 and the rotary underframe 3 may be supported on the bracket 1, and the bracket 1 is fixed to the end underframe 2 and the rotary underframe 3 through the first rotating part and the second rotating part at two ends of the bracket 1 respectively. In this way, when the rotary underframe 3 of the railway vehicle is raised with respect to the end underframe 2 and rotated, the bracket 1 may be gradually extended in the length direction with rotation of the rotary underframe 3 since the two ends of the bracket 1 in the present application are respectively rotationally connected to the end underframe 2 and the rotary underframe 3 through the first rotating part and the second rotating part in the vertical plane and the horizontal plane, thereby meeting requirements for allowing lifting and lowering movements and rotation movement of the rotary underframe 3.

[0040] In the case that the rotary underframe 3 is rotated to be returned to a running state after the vehicle is loaded or unloaded, the two ends of the bracket 1 are first rotated in the horizontal plane with respect to the end underframe 2 and the rotary underframe 3, and as the rotary underframe 3 is rotated, the length of the bracket 1 is gradually decreased to adapt to the length of a vehicle body and meet rotation requirements. When the rotary underframe 3 is rotated to a position where it is in the same line as the end underframe 2, the rotary underframe 3 gradually falls back. In the process that the rotary underframe 3 gradually falls back, the two ends of the bracket 1 are respectively rotated in the vertical plane with respect to respective rotation points, and finally the rotary underframe 3 is returned to the running state.

[0041] It may be seen from the above description that, whether during rotation of the rotary underframe 3 or during normal running of the vehicle, the bracket 1 can support the pipeline well, thus, the pipeline is prevented from being in contact with the ground and worn, and a safety risk caused by wear of the pipeline is eliminated, thereby ensuring running safety of the railway vehicle.

[0042] The bracket 1 may have an accommodation cavity, and the pipeline of the railway vehicle is configured to pass through the accommodation cavity and supported at a bottom wall of the accommodation cavity, i.e., a free end of the pipeline extending from the end underframe 2 passes through the accommodation cavity to be connected to the rotary underframe 3, that is, at least a part of pipe sections of the pipeline are located inside the accommodation cavity. The accommodation cavity not only can have a great supporting function, but also can have a protection function to a certain extent.

[0043] Reference is made to Figures 2 to 4. Figure 2 is a schematic sectional view taken along line A-A in Figure 1, and Figure 3 is a schematic sectional view taken along line B-B in Figure 1, and Figure 4 is a schematic sectional view taken along line C-C in Figure 1.

[0044] The bracket 1 includes an upper shield plate 11 and a lower shield plate 12. In the length direction, the lower shield plate 12 is supported on the upper shield plate 11, and the accommodation cavity is formed between an inner surface of the upper shield plate 11 and an upper surface of the lower shield plate 12. One of the upper shield plate 11 and the lower shield plate 12 is provided with a mounting groove 111, and the other one of the upper shield plate 11 and the lower shield plate 12 is slidably arranged inside the mounting groove 111 and further includes a self-lubrication wear-resistant component 13 provided inside the mounting groove 111. The upper shield plate 11 is slidably connected to the lower shield plate 12 through the self-lubrication wear-resistant component 13. It is preferable herein that the upper shield plate 11 is provided with the longitudinally extending mounting groove 111, and the lower shield plate 12 is slidably arranged inside the mounting groove 111. One of the upper shield plate 11 and the lower shield plate 12 is provided with the first rotating part, and the other one of the upper shield plate 11 and the lower shield plate 12 is provided with the second rotating part.

[0045] The upper shield plate 11 and the lower shield plate 12 are configured to extend and retract with respect to each other in the length direction in a manner that the upper shield plate 11 and the lower shield plate 12 are slidable with respect to each other, and thus this implementation has a simple structure and is easy to realize.

[0046] Reference is made to Figure 5, which is a schematic view showing the structure of the second rotating part according to an embodiment of the present application.

[0047] For the structures of the upper shield plate 11 and the lower shield plate 12, the first rotating part and the second rotating part may be configured as follows: the first rotating part includes a vertical rotating shaft, and the vertical rotating shaft is rotationally supported at a fixed shaft 21 of the end underframe 2, and a bottom portion of the vertical rotating shaft further includes a hinge base, and the hinge base is provided with a horizontal pin hole which is cooperatively hinged to the upper shield plate 11 through a pin shaft; or/and, the second rotating part may include a vertical rotating shaft 51 which is rotationally supported at a fixed shaft 31 of the rotary underframe 3, and a bottom portion of the second rotating part further includes a hinge base 52, and the hinge base 52 is cooperatively hinged to the lower shield plate 12 through a pin shaft 53.

[0048] An end of the lower shield plate 12 is provided with the self-lubrication wear-resistant component 13. Two side walls of the lower shield plate 12 are slidably connected to groove walls of the mounting grooves 111 through the self-lubrication wear-resistant components 13. The self-lubrication wear-resistant components 13 can reduce sliding wear between the upper shield plate 11 and the lower shield plate 12, thereby improving a service life of the upper shield plate 11 and a service life of the lower shield plate 12.

[0049] In the above embodiments, the pipeline protection device may further include a first pipeline fixation member 15 and a second pipeline fixation member 16 which are configured to fix the pipeline. The first pipeline fixation member 15 and the second pipeline fixation member 16 are accommodated in the accommodation cavity and respectively arranged at two ends of the accommodation cavity.

[0050] The first pipeline fixation member 15 and the second pipeline fixation member 16 may be fixed to the upper shield plate 11 or the lower shield plate 12 by bolts or welding.

[0051] Each of the first rotating part and the second rotating part may be a universal joint structure.

[0052] The bracket 1 according to the above embodiments is supported on the end underframe 2 and the rotary underframe 3 only through the two ends of the bracket 1. Since a frame of the vehicle has a long length, the bracket 1 has a long length correspondingly. When the car is in the normal running state, the bracket 1 may vibrate with respect to the frame of the vehicle, which affects the normal running of the vehicle. Therefore, in the present application, the following improvements are made to the pipeline protection device.

[0053] Reference is made to Figures 6 to 10. Figure 6 is a schematic view showing the structure of the pipeline protection device according to another embodiment of the present application. Figure 7 is an enlarged schematic view of part A in Figure 6. Figure 8 is an enlarged schematic view of part B in Figure 6. Figure 9 is a schematic top view of Figure 6. Figure 10 is a schematic view of the pipeline protection device when the rotary underframe 3 is in a raised state.

[0054] The pipeline protection device according to the above embodiments further includes a locking device. The locking device includes a lock pin 43, a lock hook 42, an elastic component 44 and a connection rod 41. The lock pin 43 is transversely provided on the bracket 1 at a position other than the ends of the bracket 1. The connection rod 41 is longitudinally provided and supported on the rotary underframe 3. The elastic component 44 is press-fitted between the connection rod 41 and the rotary underframe 3. The lock hook 42 is provided at one end, close to the lock pin 43, of the connection rod 41. The end underframe 2 is further provided with an abutment portion 22 which is configured to cooperate with another end of the connection rod 41. When the rotary underframe 3 is raised upward, the end, configured to cooperate with the abutment portion 22, of the connection rod 41 is disengaged from the abutment portion 22, and under a restoring force of the elastic component 44, the lock hook 42 is driven by the connection rod 41 to be disengaged from the lock pin 43. When the rotary underframe 3 falls back, the end, configured to cooperate with the abutment portion 22, of the connection rod 41 is gradually abutted against the abutment portion 22, to compress the elastic component 44, and thus the lock hook 42 is in cooperation with and locked to the lock pin 43. The abutment portion 22 may be provided at the fixed shaft 21 of the end underframe 2.

[0055] When the vehicle is in the normal running state, a middle portion of the bracket 1 may be locked to the lock pin 43 through the lock hook 42, so as to position the middle portion of the bracket 1 with respect to the rotary underframe 3. When the rotary underframe 3 is raised upwards and rotated, during upward raising of the rotary underframe 3, the connection rod connected to the lock hook 42 is disengaged from the abutment portion 22, the lock hook 42 is disengaged from the lock pin 43, and thus the bracket 1 is unlocked from the rotary underframe 3, and the bracket 1 can move along with the rotary underframe 3.

[0056] In an embodiment, a middle portion of the lock hook 42 may be hinged to the rotary underframe 3, and the connection rod 41 is hinged to an upper end of the lock hook 42, and the rotary underframe 3 is provided with a longitudinally extending slide slot. At least a part of the connection rod 41 is slidably provided in the slide slot.

[0057] The above elastic component 44 may be a spring, such as a coil spring. In an embodiment, the elastic component 44 is mounted in the following way. A vertical fixation plate 32 is provided on the rotary underframe 3, a fixation plate 411 is provided on the connection rod 41, and the elastic component 44 is press-fitted between the vertical fixation plate 32 and the fixation plate 411 of the connection rod 41. By taking the elastic component 44 being a coil spring as an example, the coil spring may be sleeved on the connection rod 41.

[0058] In order to ensure that the connection rod 41 can translate in a longitudinal direction of the vehicle body, the slide slot 3 a may be an obround hole provided in the rotary underframe 3, and a hinge pin through which the connection rod 41 is hinged to the lock hook 42 is transversely arranged inside the obround hole. The slide slot 3a may be provided in each of two sides of the rotary underframe 3. A cross bar 46 is fixed to a tail end of the connection rod 41. Two ends of the cross bar both have a hinge pin, and the cross bar is slidably connected to the slide slots located in the two sides of the rotary underframe 3 through the two hinge pins respectively. This facilitates stability of transverse movement of the connection rod 41.

[0059] In order to enable the connection rod 41 to smoothly cooperate with the abutment portion 22 when the rotary underframe 3 falls back, a contact block may be hinged to the end, close to the abutment portion 22, of the connection rod 41. The contact block has an arc-shaped structure for cooperating with the abutment portion 22, and the contact block is further hinged to the rotary underframe 3.

[0060] Based on the above pipeline protection device, a railway vehicle is further provided according to the present application, which includes the pipeline protection device according to any one of the above embodiments. The pipeline protection device is connected to the end underframe 2 and the rotary underframe 3 through the first rotating part and the second rotating part respectively.

[0061] Since the railway vehicle includes the above pipeline protection device, the railway vehicle also has the technical effects of the pipeline protection device described above.

[0062] For other structures of the railway vehicle, reference may be made to the conventional technology, which will not be described herein.

[0063] The railway vehicle and the pipeline protection device thereof according to the present application are described above in detail. Specific examples are applied herein to set forth principles and embodiments of the present application, and description of the above embodiments is merely to help understand the method of the present application and its core ideas. It should be noted that it is apparent to the person skilled in the art that a few of improvements and modifications may be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection defined by claims of the present application.

Claims (12)

1. A pipeline protection device for a railway vehicle, comprising a bracket (1) configured to support a pipeline of the railway vehicle, wherein two ends of the bracket (1) are respectively provided with a first rotating part and a second rotating part, the first rotating part and the second rotating part are respectively supported at an end underframe (2) and a rotary underframe (3) of the railway vehicle, the first rotating part is rotationally connected to the end underframe (2) in a vertical plane and a horizontal plane, the second rotating part is rotationally connected to the rotary underframe (3) in the vertical plane and the horizontal plane, and the bracket (1) is extendable and retractable in a length direction of the bracket (1).

2. The pipeline protection device according to claim 1, wherein the bracket (1) has an accommodation cavity, and the pipeline of the railway vehicle passes through the accommodation cavity and is supported at a bottom wall of the accommodation cavity.

3. The pipeline protection device according to claim 2, wherein the bracket (1) comprises an upper shield plate (11) and a lower shield plate (12), the lower shield plate (12) is slidably supported on the upper shield plate (11), and the accommodation cavity is formed between a lower surface of the upper shield plate (11) and an upper surface of the lower shield plate (12); one of the upper shield plate (11) and the lower shield plate (12) is provided with the first rotating part, and the other one of the upper shield plate (11) and the lower shield plate (12) is provided with the second rotating part.

4. The pipeline protection device according to claim 3, wherein one of the upper shield plate (11) and the lower shield plate (12) is provided with a mounting groove (111), and the other one of the upper shield plate (11) and the lower shield plate (12) is slidably provided in the mounting groove (111) and further comprises a self-lubrication wear-resistant component (13) provided inside the mounting groove (111), and the upper shield plate (11) is slidably connected to the lower shield plate (12) through the self-lubrication wear-resistant component (13).

5. The pipeline protection device according to claim 2, further comprising a first pipeline fixation member (15) and a second pipeline fixation member (16) which are configured to fix the pipeline, wherein the first pipeline fixation member (15) and the second pipeline fixation member (16) are accommodated in the accommodation cavity and provided at two ends of the accommodation cavity respectively.

6. The pipeline protection device according to claim 3, wherein the first rotating part comprises a vertical rotating shaft, the vertical rotating shaft is rotationally supported at a fixed shaft of the end underframe (2), a bottom portion of the vertical rotating shaft further comprises a hinge base, and the hinge base is provided with a horizontal pin hole cooperatively hinged to the upper shield plate (11) through a pin shaft; or/and, the second rotating part comprises a vertical rotating shaft, and the vertical rotating shaft is rotationally supported at a fixed shaft of the rotary underframe (3), and a bottom portion of the second rotating part further comprises a hinge base, and the hinge base is provided with a horizontal pin hole cooperatively hinged to the lower shield plate (12) through a pin shaft.

7. The pipeline protection device according to any one of claims 1 to 6, further comprising a locking device, wherein the locking device comprises a lock pin (43), a lock hook (42), an elastic component (44) and a connection rod (41), the lock pin (43) is transversely provided on the bracket (1) at a position other than the ends of the bracket (1), the connection rod (41) is longitudinally provided and supported on the rotary underframe (3), and the elastic component (44) is press-fitted between the connection rod (41) and the rotary underframe (3); the lock hook (42) is provided at one end, close to the lock pin (43), of the connection rod (41); the end underframe (2) is further provided with an abutment portion configured to cooperate with another end of the connection rod (41); and when the rotary underframe (3) is raised upward, the end, configured to cooperate with the abutment portion, of the connection rod (41) is disengaged from the abutment portion, and under a restoring force of the elastic component, the lock hook (42) is driven by the connection rod (41) to be disengaged from the lock pin (43); and when the rotary underframe (3) falls back, the end, configured to cooperate with the abutment portion, of the connection rod (41) is gradually abutted against the abutment portion to compress the elastic component (44), and the lock hook (42) is in cooperation with and locked to the lock pin (43).

8. The pipeline protection device according to claim 7, wherein a middle portion of the lock hook (42) is hinged to the rotary underframe (3), the connection rod (41) is hinged to an upper end of the lock hook (42), the rotary underframe (3) is provided with a longitudinally extending slide slot (3 a), and at least a part of the connection rod (41) is slidably provided in the slide slot (3 a).

9. The pipeline protection device according to claim 8, wherein the slide slot (3a) is an obround hole provided in the rotary underframe (3), and a hinge pin through which the connection rod (41) is hinged to the lock hook (42) is transversely arranged in the obround hole.

10. The pipeline protection device according to claim 8, wherein two of the slide slots (3a) are respectively provided in two sides of the rotary underframe (3), a cross bar (46) is fixed to a tail end of the connection rod (41), two hinge pins are respectively provided at two ends of the cross bar (46), and the two hinge pins are slidably arranged in the two slide slots (3 a) respectively.

11. The pipeline protection device according to claim 7, wherein a contact block (45) is hinged to the end, close to the abutment portion, of the connection rod (41); the contact block (45) has an arc-shaped structure for cooperating with the abutment portion (22), and the contact block (45) is further hinged to the rotary underframe (3).

12. A railway vehicle, comprising an end underframe (2); and a rotary underframe (3), wherein the railway vehicle further comprises the pipeline protection device according to any one of claims 1 to 11, and the pipeline protection device is connected to the end underframe (2) and the rotary underframe (3) through the first rotating part and the second rotating part respectively.