Rail transit motor car protective handrail frame and processing method

Abstract

The present application relates to rail vehicle technology field, more specifically, a kind of rail traffic motor car protective handrail frame and processing method;Including support vertical pole, multiple support vertical pole is connected by cross bar, multiple inertia buffer handrail device for hand support is arranged side by side on cross bar, and inertia buffer handrail device is set in cross bar by multiple-stage buffer horizontal sliding;The cross bar includes left half cross bar and right half cross bar, left half cross bar and right half cross bar are respectively fixed on two support vertical poles, left half cross bar and right half cross bar are connected, and multiple side limit slots and multiple handrail movable slots are arranged on left half cross bar and right half cross bar;The beneficial effects of the present application are to solve the problem that the protective handrail frame in the prior art is mostly fixed and locked, and the same force is usually pulled during emergency braking, which is easy to pull the passenger in the accident.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and more specifically to a protective handrail frame for rail transit vehicles and its processing method. Background Technology

[0002] Most existing protective handrails used in rail transit are fixed and locked, suspended from the vehicle body. They are held by hand to prevent falls during sudden braking and provide effective protection. A similar approach is taken to a three-person bus handrail based on non-Newtonian fluid protection, as described in patent CN111993971B. This handrail includes a main handrail frame, with a mounting bracket fixedly connected to its top. A non-Newtonian fluid coupling mechanism is rotatably connected to the middle of the mounting bracket, and the bottom of the main handrail frame is fixed at the middle position. The three-person bus handrail, based on non-Newtonian fluid protection, is connected to a main handle and has a transmission slider slidably connected inside the moving track. The outer side of the transmission slider is fixedly connected to a movable grip mechanism. The bottom of the transmission slider is fixedly connected to the bottom of the moving track through a compression spring. This handrail is designed for three people to use one handrail, ensuring the stability of passengers holding the handrail and improving the support of passengers. However, the fixed and locked handrail usually experiences the same pulling force during sudden braking, and the excessive force can easily injure passengers in an accident. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, the protective handrails are mostly fixed and locked, and usually have the same pulling force as them during sudden braking, which is too great and can easily injure passengers in an accident; and to solve the problem that some rail transit systems do not have protective handrails connected at the junction of carriages.

[0004] Therefore, the technical solution adopted is a protective handrail for rail transit and a processing method thereof, which includes a supporting vertical rod, multiple supporting vertical rods are connected by a horizontal rod, and multiple inertial buffer handrails are arranged side by side on the horizontal rod for hand support. The inertial buffer handrails are laterally slidably arranged in the horizontal rod through multi-stage buffering.

[0005] Preferably, the crossbar includes a left half crossbar and a right half crossbar, which are respectively fixed on two supporting vertical bars and connected together. Both the left half crossbar and the right half crossbar are provided with multiple side limiting grooves and multiple handrail movable grooves, and an inertial buffer handrail is provided in the handrail movable groove.

[0006] Preferably, the left and right crossbars are connected by bolts.

[0007] Preferably, the left and right half-horizontal bars are hinged together by a ball seat hinge platform. Two hinged balls are fixed at both ends of the ball seat hinge platform, and the two hinged balls are respectively hinged in the hinged ball grooves of the left and right half-horizontal bars. A flexible outer sleeve is provided between the left and right half-horizontal bars outside the ball seat hinge platform.

[0008] Preferably, the inner walls of the left and right half-horizontal bars are provided with internal through holes, and multiple partition fixing platforms are evenly arranged in the internal through holes. The upper and lower ends of the partition fixing platforms are connected to the left and right half-horizontal bars by partition fixing bolts.

[0009] Preferably, the inertial buffer handrail includes a handrail connecting frustum, which is laterally limited and slidably connected in the inner through hole. The handrail connecting frustum is set in the handrail movable groove. Both the upper and lower ends of the handrail connecting frustum are provided with handrail ball grooves, and the lower handrail and the upper handrail are connected in the two handrail ball grooves by hinged balls.

[0010] Preferably, both the lower and upper armrests are provided with multiple hand grip grooves.

[0011] Preferably, the two ends of the handrail connecting frustum are respectively hinged to a first-stage pawl via a short shaft. The first-stage pawl is inserted and engaged on a first-stage ratchet platform. The center of the first-stage ratchet platform is fixed on the telescopic rod of the first-stage buffer oil rod. Two ratchet platform extension limiting rods are respectively fixed at both ends of the first-stage ratchet platform. The ratchet platform extension limiting rods slide laterally within the side limiting groove. The ratchet platform extension limiting rods are arc-shaped and fit against the buffer blocking spring rod. The buffer blocking spring rod is inserted into the outer frame through a spring shaft. The outer frame is fixed outside the side limiting groove.

[0012] Preferably, the rear end of the primary buffer rod is hinged to a secondary pawl via a short shaft. The secondary pawl is inserted and engaged on the secondary ratchet platform. The center of the secondary ratchet platform is fixed to the telescopic rod of the secondary buffer rod. The secondary buffer rod is fixed on the partition platform. Both ends of the secondary ratchet platform are fixed with secondary extension limiting rods. The secondary extension limiting rods are arc-shaped and fit against the buffer blocking spring rod. The elastic performance of the spring of the buffer blocking spring rod that fits against the secondary extension limiting rod is greater than the elastic performance of the spring of the buffer blocking spring rod that fits against the extension limiting rod of the ratchet platform.

[0013] A method for manufacturing a protective handrail for rail transit vehicles includes the following steps:

[0014] S1; First, add a partition fixing platform and lock it in place using partition fixing bolts;

[0015] S2; Insert the components of the inertial buffer handrail into the crossbar in sequence;

[0016] S3; After adding the enclosed partition fixing platform, lock it in place; Repeat this process to add multiple inertial buffer handrails.

[0017] S4; then install the lower and upper handrails on the inertial buffer handrail; then connect the crossbar to the designated position of the supporting vertical bar with bolts to complete the processing and assembly.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in this application.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention in a first orientation.

[0022] Figure 2 This is a schematic diagram of the overall second-direction structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the crossbar connection structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the flexible connection structure of the crossbar of the present invention;

[0025] Figure 5 This is a schematic diagram of the positional structure of the ball seat hinge platform of the present invention;

[0026] Figure 6 This is a schematic diagram of the ball seat hinge platform of the present invention;

[0027] Figure 7 This is a schematic diagram of the inertial buffer handrail on the left half of the crossbar of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the left half of the crossbar of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the partition fixing platform of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 1 ;

[0031] Figure 11 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 2 ;

[0032] Figure 12 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 3 ;

[0033] Figure 13 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 4 ;

[0034] Figure 14 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 5 ;

[0035] Figure 15 This is a schematic diagram of the structure of the inertial buffer handrail of the present invention. Figure 6 .

[0036] In the diagram: 1. Supporting vertical bar; 2. Left half horizontal bar; 3. Right half horizontal bar; 4. Inertial buffer handrail; 5. Flexible outer sleeve; 6. Ball seat hinge platform; 7. Hinge ball; 8. Hinge ball groove; 9. Inner through hole; 10. Divider fixing platform; 11. Side limiting groove; 12. Handrail movable groove; 13. Divider fixing bolt; 14. Lower handrail; 15. Upper handrail; 16. Handrail connecting frustum; 17. Handrail ball groove; 18. First-stage pawl; 19. First-stage ratchet platform; 20. Ratchet platform extension limiting rod; 21. First-stage buffer oil rod; 22. Second-stage pawl; 23. Second-stage ratchet platform; 24. Second-stage buffer oil rod; 25. Buffer blocking spring rod; 26. Outer frame. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In the description of this application, it should be understood that the terms "middle," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Example 1:

[0042] like Figure 1 and Figure 2 As shown, a protective handrail frame for rail transit vehicles and its processing method include a supporting vertical rod 1, multiple supporting vertical rods 1 are connected by a horizontal rod, and multiple inertial buffer handrails 4 are arranged side by side on the horizontal rod for hand support. The inertial buffer handrails 4 are laterally slidably arranged in the horizontal rod through multi-stage buffering.

[0043] The working principle and beneficial effects of this embodiment are as follows: Multiple supporting vertical rods 1 are first fixed in their installation positions, and then a horizontal rod is connected and fixed between two adjacent supporting vertical rods 1 to provide support and connection. Multiple inertial buffer handrails 4 are then arranged side-by-side on the horizontal rod for hand support, preventing falls during vehicle swaying. The inertial buffer handrails 4 are laterally slidably installed within the horizontal rod through multi-stage buffering, effectively achieving a buffering effect while avoiding reducing the swaying of the inertial buffer handrails 4 and thus improving the user experience. In emergencies, partial force blocking prevents displacement. When the force exceeds the first level, partial displacement provides buffering to prevent excessive pulling force. When the force exceeds the second level, partial displacement provides secondary buffering to prevent excessive pulling force and unnecessary damage. This solves the problem that existing protective handrails are mostly fixed and locked, and during sudden braking, the pulling force is often too great, easily injuring passengers in accidents.

[0044] Example 2:

[0045] like Figure 1 — Figure 15 As shown, a protective handrail frame for rail transit vehicles and its processing method are disclosed. The horizontal bar includes a left half horizontal bar 2 and a right half horizontal bar 3. The left half horizontal bar 2 and the right half horizontal bar 3 are respectively fixed on two supporting vertical bars 1. The left half horizontal bar 2 and the right half horizontal bar 3 are connected. Multiple side limiting grooves 11 and multiple handrail movable grooves 12 are provided on both the left half horizontal bar 2 and the right half horizontal bar 3. An inertial buffer handrail device 4 is provided in the handrail movable groove 12.

[0046] The working principle and beneficial effects of this embodiment are as follows: by dividing the horizontal bar into the left half horizontal bar 2 and the right half horizontal bar 3, the choice of which to use depends on the actual situation. The horizontal bar can be used as an integrated support for the vertical bar 1, or it can be used separately, depending on the installation environment.

[0047] By fixing the left half-horizontal bar 2 and the right half-horizontal bar 3 to two supporting vertical bars 1 respectively, the left half-horizontal bar 2 and the right half-horizontal bar 3 are connected and installed in accordance with the assembly environment; by providing multiple side limiting grooves 11 and multiple handrail movable grooves 12 on both the left half-horizontal bar 2 and the right half-horizontal bar 3, it is convenient to install multiple inertial buffer handrails 4 in the handrail movable grooves 12.

[0048] Example 3:

[0049] like Figure 1 — Figure 15 As shown, a protective handrail for rail transit vehicles and its processing method are disclosed, wherein the left half-horizontal bar 2 and the right half-horizontal bar 3 are connected by bolts.

[0050] The working principle and beneficial effects of this embodiment are as follows: When it is necessary to combine them into a crossbar for use, the left half crossbar 2 and the right half crossbar 3 can be connected by bolts, thereby adapting to use in environments where a longer crossbar is required.

[0051] Example 4:

[0052] like Figure 1 — Figure 15 As shown, a protective handrail for rail transit vehicles and its processing method are disclosed. The left half-crossbar 2 and the right half-crossbar 3 are hinged together by a ball seat hinge platform 6. Two hinged balls 7 are fixed at both ends of the ball seat hinge platform 6, and the two hinged balls 7 are respectively hinged in the hinge ball grooves 8 of the left half-crossbar 2 and the right half-crossbar 3. A flexible outer sleeve 5 is provided between the left half-crossbar 2 and the right half-crossbar 3 outside the ball seat hinge platform 6.

[0053] The working principle and beneficial effects of this embodiment are as follows: When used in a subway car environment, there is usually no high handrail at the connection point of the subway cars because the design involves turning and swaying, so it is not suitable to install a high handrail. The left half-horizontal bar 2 and the right half-horizontal bar 3 are installed on the supporting vertical bars 1 of the two cars. The left half-horizontal bar 2 and the right half-horizontal bar 3 are connected by a ball seat hinge platform 6. Two hinged balls 7 are fixed at both ends of the ball seat hinge platform 6. The two hinged balls 7 are respectively hinged in the hinge ball grooves 8 of the left half-horizontal bar 2 and the right half-horizontal bar 3. This can complete the hinge with relatively multi-angle sliding, thereby preventing interference caused by the relative offset of the cars. This achieves the effect of connecting at the subway car connection point. By sleeved with a flexible outer sleeve 5 between the left half-horizontal bar 2 and the right half-horizontal bar 3 outside the ball seat hinge platform 6, accidental contact with the hinge point is prevented, effectively preventing injury and interference.

[0054] Example 5:

[0055] like Figure 1 — Figure 15 As shown, a protective handrail for rail transit vehicles and its processing method are disclosed. The inner walls of the left half-horizontal bar 2 and the right half-horizontal bar 3 are provided with inner through holes 9. Multiple partition fixing platforms 10 are evenly arranged in the inner through holes 9. The upper and lower ends of the partition fixing platforms 10 are connected to the left half-horizontal bar 2 and the right half-horizontal bar 3 by partition fixing bolts 13.

[0056] The working principle and beneficial effects of this embodiment are as follows: Since the inner walls of the left half-horizontal bar 2 and the right half-horizontal bar 3 are provided with inner through holes 9, it is convenient to add multiple partition fixing platforms 10 in the inner through holes 9. When the partition fixing platform 10 reaches the designated position, it is connected to the left half-horizontal bar 2 and the right half-horizontal bar 3 by partition fixing bolts 13, and the partition fixing platform 10 is locked and fixed, thereby realizing the separation of space in the inner through holes 9, effectively playing a supporting role, while preventing mutual interference between the various inertial buffer handrails 4.

[0057] Example 6:

[0058] like Figure 1 — Figure 15 As shown, a protective handrail frame for rail transit vehicles and its processing method are disclosed. The inertial buffer handrail 4 includes a handrail connecting frustum 16, which is laterally limited and slidably connected in an inner through hole 9. The handrail connecting frustum 16 is set in a handrail movable groove 12. Both the upper and lower ends of the handrail connecting frustum 16 are provided with handrail ball grooves 17. The lower handrail 14 and the upper handrail 15 are connected in both handrail ball grooves 17 by hinged balls.

[0059] The working principle and beneficial effects of this embodiment are as follows: By laterally limiting and sliding the handrail connecting frustum 16 into the inner through hole 9, it is convenient to install the lower handrail 14 and the upper handrail 15 in the handrail movable groove 12 on the handrail connecting frustum 16. First, the balls on the lower handrail 14 and the upper handrail 15 are inserted into the two handrail ball grooves 17 at the upper and lower ends, and then the handrail ball grooves 17 are locked and closed, thus completing the connection of the lower handrail 14 and the upper handrail 15 to the handrail connecting frustum 16. This allows for convenient multi-angle rotation of the handrail, which is convenient for practical application. The upper handrail 15 is designed to facilitate use by taller people, preventing unnecessary discomfort caused by pulling on the lower handrail. At the same time, it allows users at higher positions to experience the effect of buffering force by partially blocking force in case of emergency.

[0060] Example 7:

[0061] like Figure 1 — Figure 15 As shown, a protective handrail frame for rail transit vehicles and its processing method are disclosed, wherein the lower handrail 14 and the upper handrail 15 are provided with multiple hand grip grooves.

[0062] The working principle and beneficial effects of this embodiment are as follows: multiple hand grip grooves are provided on both the lower armrest 14 and the upper armrest 15 to facilitate the actual user experience, increase the force, and make it easier to grip.

[0063] Example 8:

[0064] like Figure 1 — Figure 15 As shown, a protective handrail frame for rail transit vehicles and its processing method are disclosed. The two ends of the handrail connecting frustum 16 are respectively hinged to a first-stage pawl 18 via a short shaft. The first-stage pawl 18 is inserted and engaged on a first-stage ratchet platform 19. The center of the first-stage ratchet platform 19 is fixed on the telescopic rod of the first-stage buffer oil rod 21. Two ratchet platform extension limiting rods 20 are respectively fixed at both ends of the first-stage ratchet platform 19. The ratchet platform extension limiting rods 20 slide laterally within the side limiting groove 11. The ratchet platform extension limiting rods 20 are arc-shaped and fit against the buffer blocking spring rod 25. The buffer blocking spring rod 25 is inserted into the outer frame 26 via a spring shaft. The outer frame 26 is fixed outside the side limiting groove 11.

[0065] The working principle and beneficial effects of this embodiment are as follows: By hinged primary pawls 18 at both ends of the handrail connecting frustum 16, the primary pawls 18 are driven to shake during the pulling of the lower handrail 14 and the upper handrail 15. Simultaneously, the primary pawls 18 engage with the primary ratchet platform 19, causing the primary ratchet platform 19 to also shake under force. Since the center of the primary ratchet platform 19 is fixed to the telescopic rod of the primary buffer oil rod 21, and two ratchet platform extension limiting rods 20 are fixed at both ends of the primary ratchet platform 19, the primary ratchet platform 19 receives partial cushioning on the telescopic rod of the primary buffer oil rod 21. At the same time, the two ratchet platform extension limiting rods 20 are blocked by the fitted buffer blocking spring rods 25, thereby limiting the shaking space of the handrail connecting frustum 16. The limits are very limited to avoid creating a sense of insecurity for the user experience. In special scenarios or sudden braking situations, the ratchet platform extension limit rod 20 experiences increased force, which in turn arcs and compresses the buffer stop spring rod 25. The increased force on the buffer stop spring rod 25 compresses the spring on the buffer stop spring rod 25, thereby causing the ratchet platform extension limit rod 20 and the first-stage ratchet platform 19 to receive timely buffering force on the first-stage buffer oil rod 21 through the buffer stop spring rods 25 at both ends. The low-viscosity silicone oil of the first-stage buffer oil rod 21 flows through a wide-aperture resistance of ≈80N. This prevents the user from pulling on the lower armrest 14 and upper armrest 15 in an emergency, thus preventing unnecessary pulling injuries caused by excessive pulling force, especially in the case of sudden braking and air suspension.

[0066] By converting braking impact energy into controllable mechanical work through handrails, the inertial force experienced by passengers is reduced by 40%-60%, while ensuring that the basic rigid support function is still maintained in the event of failure.

[0067] Example 9:

[0068] like Figure 1 — Figure 15 As shown, a protective handrail for rail transit vehicles and its processing method are disclosed. The rear end of the primary buffer rod 21 is hinged to a secondary pawl 22 via a short shaft. The secondary pawl 22 is inserted and engaged on the secondary ratchet platform 23. The center of the secondary ratchet platform 23 is fixed on the telescopic rod of the secondary buffer rod 24. The secondary buffer rod 24 is fixed on the partition fixing platform 10. Both ends of the secondary ratchet platform 23 are fixed with secondary extension limiting rods. The secondary extension limiting rods are arc-shaped and attached to the buffer blocking spring rod 25. The elastic performance of the spring of the buffer blocking spring rod 25 attached to the secondary extension limiting rod is greater than that of the spring of the buffer blocking spring rod 25 attached to the ratchet platform extension limiting rod 20.

[0069] The working principle and beneficial effects of this embodiment are as follows: When the primary buffer rod 21 is subjected to force, it drives the rear end of the primary buffer rod 21 to move inward through the short shaft hinge of the secondary ratchet 22. This causes the secondary ratchet 22 to squeeze the secondary buffer rod 24 through the upper principle to achieve buffering. Because the elastic performance of the spring of the buffer blocking spring rod 25 that is attached to the secondary extension limit rod is greater than that of the spring of the buffer blocking spring rod 25 that is attached to the ratchet table extension limit rod 20, the resistance of the secondary buffer blocking spring rod 25 is greater than that of the primary buffer blocking spring rod 25. Only after the resistance of the secondary buffer blocking spring rod 25 is broken can the secondary buffer rod 24 be squeezed to generate a reverse buffering force. When the impact force is greater than 150N, the resistance of the high viscosity magnetorheological fluid flowing through the narrow aperture of the secondary buffer rod 24 is approximately 300N, thereby achieving secondary buffering and deceleration. This reduces the inertial force borne by the passenger. After use, the buffer blocking spring rod 25 can be reset by operating it.

[0070] Example 10:

[0071] A method for manufacturing a protective handrail for rail transit vehicles includes the following steps:

[0072] S1; First, add the partition fixing platform 10 and lock it in place using the partition fixing bolts 13;

[0073] S2; Insert the components of the inertial buffer handrail 4 into the crossbar in sequence;

[0074] S3; After adding the closed partition fixing platform 10, lock it in place; Repeat this process to add multiple inertial buffer handrails 4.

[0075] S4; then install the lower handrail 14 and the upper handrail 15 on the inertial buffer handrail 4; then connect the crossbar to the designated position of the supporting vertical bar 1 with bolts to complete the processing and assembly.

[0076] The above description is not intended to limit the present invention, nor is the present invention limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A protective handrail for rail transit vehicles, characterized in that: It includes a support vertical bar (1), multiple support vertical bars (1) are connected by a horizontal bar, and multiple inertial buffer handrails (4) are arranged side by side on the horizontal bar for hand support. The inertial buffer handrails (4) are laterally slidably arranged in the horizontal bar through multi-level buffering. The crossbar includes a left half crossbar (2) and a right half crossbar (3). The left half crossbar (2) and the right half crossbar (3) are fixed on two supporting vertical bars (1) respectively. The left half crossbar (2) and the right half crossbar (3) are connected. The left half crossbar (2) and the right half crossbar (3) are provided with multiple side limiting grooves (11) and multiple handrail movable grooves (12). An inertial buffer handrail (4) is provided in the handrail movable groove (12). The inner walls of the left half crossbar (2) and the right half crossbar (3) are provided with inner through holes (9), and multiple partition fixing platforms (10) are evenly arranged in the inner through holes (9). The upper and lower ends of the partition fixing platforms (10) are connected to the left half crossbar (2) and the right half crossbar (3) by partition fixing bolts (13). The inertial buffer handrail (4) includes a handrail connecting frustum (16), which is laterally limited and slidably connected in the inner through hole (9). The handrail connecting frustum (16) is set in the handrail movable groove (12). Both the upper and lower ends of the handrail connecting frustum (16) are provided with handrail ball grooves (17). The lower handrail (14) and the upper handrail (15) are connected in the two handrail ball grooves (17) through hinged balls. The two ends of the handrail connecting truncated cone (16) are respectively hinged to the first-level pawl (18) via a short shaft. The first-level pawl (18) is inserted and engaged on the first-level ratchet table (19). The center of the first-level ratchet table (19) is fixed on the telescopic rod of the first-level buffer oil rod (21). Two ratchet table extension limiting rods (20) are respectively fixed at the two ends of the first-level ratchet table (19). The ratchet table extension limiting rods (20) slide laterally in the side limiting groove (11). The ratchet table extension limiting rods (20) are arc-shaped and fit against the buffer blocking spring rod (25). The buffer blocking spring rod (25) is inserted into the outer frame (26) through the spring shaft. The outer frame (26) is fixed outside the side limiting groove (11).

2. The protective handrail for rail transit vehicles according to claim 1, characterized in that: The left half-horizontal bar (2) and the right half-horizontal bar (3) are connected by bolts.

3. The protective handrail for rail transit vehicles according to claim 1, characterized in that: The left half-cross bar (2) and the right half-cross bar (3) are hinged together by a ball seat hinge platform (6). Two hinged balls (7) are fixed at both ends of the ball seat hinge platform (6). The two hinged balls (7) are respectively hinged in the hinge ball grooves (8) of the left half-cross bar (2) and the right half-cross bar (3). A flexible outer sleeve (5) is provided between the left half-cross bar (2) and the right half-cross bar (3) outside the ball seat hinge platform (6).

4. A protective handrail for rail transit vehicles according to claim 1, characterized in that: Both the lower armrest (14) and the upper armrest (15) are provided with multiple hand grip grooves.

5. A protective handrail for rail transit vehicles according to claim 1, characterized in that: The rear end of the primary buffer rod (21) is hinged to the secondary pawl (22) via a short shaft. The secondary pawl (22) is inserted and engaged on the secondary ratchet platform (23). The center of the secondary ratchet platform (23) is fixed on the telescopic rod of the secondary buffer rod (24). The secondary buffer rod (24) is fixed on the partition fixed platform (10). Both ends of the secondary ratchet platform (23) are fixed with a secondary extension limiting rod. The secondary extension limiting rod is arc-shaped and fits against the buffer blocking spring rod (25). The elastic performance of the spring of the buffer blocking spring rod (25) that fits against the secondary extension limiting rod is greater than the elastic performance of the spring of the buffer blocking spring rod (25) that fits against the ratchet platform extension limiting rod (20).

6. A method for processing a protective handrail for rail transit vehicles, applicable to the protective handrail for rail transit vehicles as described in any one of claims 1-5, characterized in that: Includes the following steps: S1; First, add a partition fixing platform (10) and lock it in place using partition fixing bolts (13); S2; Insert the components of the inertial buffer handrail (4) into the crossbar in sequence; S3; After adding the closed partition fixing platform (10), lock it in place; Add multiple inertial buffer handrails (4) in sequence; S4; then install the lower handrail (14) and upper handrail (15) on the inertial buffer handrail (4); then connect the crossbar to the designated position of the supporting vertical bar (1) by bolts to complete the processing and assembly.

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