Extensible handrail for rail transit

Abstract

The utility model provides an extensible handrail for rail transit, which relates to the field of handrails and comprises a handrail rod and a plurality of fixing rods. If the passenger flow in the compartment is increased in a peak period, a connecting rod can be manually held to enable the passenger flow to flow downwards, after one ends of a plurality of clamping blocks are driven to slide downwards to a certain position in the inner wall of a clamping hole, an expansion rod is held to be pulled to one end, a round rod is driven to slide outwards to a certain distance in the inner wall of a groove rod, and then the connecting rod is loosened; the clamping blocks can be clamped into the clamping holes and the corresponding clamping grooves under the reset action of the springs, the expansion rods are fixed and limited, and therefore the grabbing area and grabbing points of the grab rail can be increased, more passengers can grab the grab rail in the peak period, potential safety hazards caused in the running process of a vehicle are reduced, and the service life of the grab rail is prolonged. And the applicability of the traditional grab rail is improved.

Description

Technical Field

[0001] This utility model relates to the field of handrails, and in particular to an expandable handrail for rail transit. Background Technology

[0002] Handrails for rail transit are facilities that provide support and safety for passengers in public transportation such as subways, light rails, and trains. They help passengers maintain their balance and prevent falls, especially when the vehicle starts, accelerates, decelerates, turns, or stops.

[0003] When handrails are installed on rail transit vehicles using fixed poles, the size and position of traditional handrails are fixed, resulting in limited gripping points on their surface. In actual use, during peak hours when passenger flow in the carriage increases, some passengers may be unable to hold onto the handrails. This could lead to some passengers falling while the vehicle is in motion, creating a certain safety hazard and making traditional handrails less applicable. Utility Model Content

[0004] The technical problem this utility model aims to solve is that when handrails are installed on rail transit vehicles using fixed poles, the traditional handrails are fixed in size and position, resulting in limited gripping points on their surface. In actual use, during peak hours when passenger flow in the carriage increases, some passengers may be unable to grip the handrails, which may cause some passengers who are not holding on to fall while the vehicle is in motion, creating certain safety hazards and making the traditional handrails less applicable.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an expandable handrail for rail transit, including a handrail pole and several fixed poles. Several expansion devices are provided on the outer surface of the handrail pole. A detachable device is provided between the outer surface of the handrail pole and one end of the several fixed poles. The expansion device can increase the contact area of ​​the outer surface of the handrail pole by adjustment, thereby expanding the gripping area. The detachable device can remove the handrail pole from the fixed poles for easy replacement.

[0006] The extension device includes an extension rod and a connecting rod. Several grooved rods are threaded through and connected to the outer surface of the handrail. A locking hole is formed on one side of the inner wall of each grooved rod. A round rod is slidably connected to the inner wall of the grooved rod. One end of the round rod is fixedly connected to the inner wall of the extension rod. The outer surface of the round rod has symmetrically formed locking grooves. The outer surface of the handrail is inserted into the inner wall of the extension rod. Several locking blocks are fixedly connected to the outer surface of the connecting rod. One end of each locking block is inserted into the inner wall of the locking hole and the locking groove. A spring is sleeved on the outer surface of one end of each locking block. Both ends of the spring are fixedly connected to one side of the locking block and the outer surface of the grooved rod, respectively.

[0007] The aforementioned components achieve the following effects: By incorporating an extension device, when the handrail is installed on a rail transit vehicle using a fixing rod, during peak hours when passenger flow in the carriage increases, the connecting rod can be manually grasped and moved downwards. This causes one end of several locking blocks to slide downwards in the inner wall of the locking holes to a certain position. Then, the extension rod is pulled to one end, causing the round rod to slide outwards in the inner wall of the grooved rod to a certain distance. After releasing the connecting rod, the locking blocks, under the reset action of the spring, can lock into the locking holes and corresponding slots, fixing and limiting the extension rod. This increases the handrail's gripping area and gripping points, allowing more passengers to grip it during peak hours, reducing safety hazards during vehicle operation, and improving the applicability of traditional handrails. Similarly, when not in use, it can be stored on the outer surface of the handrail.

[0008] Preferably, a plurality of anti-slip strips are fixedly connected to the outer surface of the extension rod, and the plurality of anti-slip strips are arranged at equal intervals.

[0009] The effect achieved by the above components is that by setting anti-slip strips, the contact friction of the outer surface of the extension rod can be increased, making it more secure when manually gripped.

[0010] Preferably, a reinforcing rod is symmetrically fixedly connected to the outer surface of one end of the grooved rod, and one side of one end of the reinforcing rod is fixedly connected to the outer surface of the handrail.

[0011] The effect achieved by the above-mentioned components is that by setting up reinforcing rods, the contact area of ​​the outer surface of the handrail can be increased, making the connection more secure and less prone to breakage or damage.

[0012] Preferably, the detachable device includes several bolts, several screw hole blocks and several pads. One end of the fixing rod is fixedly connected to an elastic arc block. The outer surface of the handrail is inserted into the inner wall of the elastic arc block. Circular holes are symmetrically opened on one side of both ends of the elastic arc block. One end of the bolt is inserted into the inner wall of the circular hole, and the other end of the bolt is spirally inserted into the inner wall of the screw hole block.

[0013] The effect achieved by the above-mentioned components is as follows: by setting up a detachable device, when the handrail is deformed and damaged and needs to be replaced, without removing the fixed rod from the carriage, the screw hole block can be screwed off the bolt, and then the bolt can be pulled out from the inner wall of the round hole, so that the handrail can be removed from the inner wall of the elastic arc block for easy replacement.

[0014] Preferably, the longitudinal section of the outer surface of the screw hole block is hexagonal.

[0015] The effect achieved by the above components is that by setting the outer surface of the bolt in a hexagonal shape, the hexagonal edges can increase the surface contact friction, making it easier to hold manually, and also making it easier to clamp and fix with a correspondingly shaped tightening tool before tightening, thus facilitating operation.

[0016] Preferably, the inner wall of the pad is fitted onto the outer surface of one end of the bolt, and the pad is disposed between one side of the bolt hole block and the elastic arc block.

[0017] The effect achieved by the above components is that by setting the pad, the contact area between one side of the screw hole block and the elastic arc block can be increased, making it more secure when fixed.

[0018] Preferably, one end of the bolt is fixedly connected to a connecting rope, and one end of the connecting rope is fixedly connected to the outer surface of the elastic arc block.

[0019] The effect achieved by the above components is that by setting a connecting rope, the bolt can be fixed to the outer surface of the elastic arc block, making it less likely to be lost.

[0020] The beneficial effects of this utility model are:

[0021] By incorporating an extension device, when the handrail is installed on a rail transit vehicle using a fixed rod, during peak hours when passenger flow in the carriage increases, the connecting rod can be manually grasped and pulled downwards. This causes one end of several locking blocks to slide downwards in the inner wall of the locking holes to a certain position. Then, the extension rod is pulled to one end, causing the round rod to slide outwards in the inner wall of the grooved rod to a certain distance. After releasing the connecting rod, the locking blocks can be locked into the locking holes and corresponding slots under the reset action of the spring, thus fixing and limiting the extension rod. This increases the gripping area and gripping points of the handrail, allowing more passengers to grip it during peak hours, reducing safety hazards during vehicle operation and improving the applicability of traditional handrails. Similarly, when not in use, it can be stored on the outer surface of the handrail. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the handrail of this utility model;

[0025] Figure 3 for Figure 2 A three-dimensional schematic diagram of a local structure;

[0026] Figure 4This is a three-dimensional structural diagram of the fixing rod of this utility model.

[0027] Legend: 1. Handrail; 2. Extension device; 3. Detachable device; 4. Fixed rod; 21. Grooved rod; 22. Locking hole; 23. Round rod; 24. Extension rod; 25. Locking groove; 26. Connecting rod; 27. Locking block; 28. Spring; 29. ​​Anti-slip strip; 210. Reinforcing rod; 31. Elastic arc block; 32. Round hole; 33. Bolt; 34. Screw hole block; 35. Pad; 36. Connecting rope. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Figure 1-4 The illustrated expandable handrail for rail transit includes a handrail 1 and several fixed rods 4. Several extension devices 2 are provided on the outer surface of the handrail 1. A detachable device 3 is provided between the outer surface of the handrail 1 and one end of the fixed rods 4. The extension devices 2 can be adjusted to increase the contact area of ​​the outer surface of the handrail 1 and expand the gripping area. The detachable device 3 can remove the handrail 1 from the fixed rods 4 for easy replacement.

[0031] Figure 2 and Figure 3The extension device 2 shown includes an extension rod 24 and a connecting rod 26. Several grooved rods 21 are connected to the outer surface of the handrail 1. A locking hole 22 is opened on one side of the inner wall of the grooved rod 21. A round rod 23 is slidably connected to the inner wall of the grooved rod 21. One end of the round rod 23 is fixedly connected to the inner wall of the extension rod 24. A locking groove 25 is symmetrically opened on the outer surface of the round rod 23. The outer surface of the handrail 1 is inserted into the inner wall of the extension rod 24. Several locking blocks 27 are fixedly connected to the outer surface of the connecting rod 26. One end of the locking block 27 is inserted into the inner wall of the locking hole 22 and the locking groove 25. A spring 28 is sleeved on the outer surface of one end of the locking block 27. The two ends of the spring 28 are fixedly connected to one side of the locking block 27 and the outer surface of the grooved rod 21, respectively. When the handrail 1 is installed on a rail transit vehicle with the help of the fixing rod 4, if the passenger flow in the carriage increases during peak hours, the connecting rod 26 can be manually grasped and moved downwards. This causes one end of several locking blocks 27 to slide downwards in the inner wall of the locking hole 22 to a certain position. Then, the extension rod 24 is grasped and pulled to one end, causing the round rod 23 to slide outwards in the inner wall of the grooved rod 21 to a certain distance. After releasing the connecting rod 26, the locking blocks 27 can be locked into the locking hole 22 and the corresponding locking groove 25 under the reset action of the spring 28, thus fixing and limiting the extension rod 24. This increases the gripping area and gripping points of the handrail 1, allowing more passengers to grip it during peak hours, reducing safety hazards during vehicle operation and improving the applicability of the traditional handrail 1. Similarly, when not in use, it can be stored on the outer surface of the handrail 1.

[0032] Figure 2 and Figure 3 The outer surface of the extension rod 24 shown is fixedly connected with several anti-slip strips 29, which are arranged at equal intervals. By setting the anti-slip strips 29, the contact friction of the outer surface of the extension rod 24 can be increased, making it more secure when manually gripped. A reinforcing rod 210 is symmetrically fixedly connected to the outer surface of one end of the grooved rod 21, and one end of the reinforcing rod 210 is fixedly connected to the outer surface of the handrail 1. By setting the reinforcing rod 210, the contact area of ​​the outer surface of the handrail 1 can be increased, making the connection more secure and less prone to breakage or damage.

[0033] Figure 4The detachable device 3 shown includes several bolts 33, several screw-hole blocks 34, and several pads 35. One end of the fixing rod 4 is fixedly connected to an elastic arc block 31. The outer surface of the handrail 1 is inserted into the inner wall of the elastic arc block 31. Circular holes 32 are symmetrically opened on one side of both ends of the elastic arc block 31. One end of the bolt 33 is inserted into the inner wall of the circular hole 32, and the other end of the bolt 33 is screwed into the inner wall of the screw-hole block 34. When the handrail 1 is deformed and damaged and needs to be replaced, without removing the fixing rod 4 from the carriage, the screw-hole block 34 can be screwed off the bolt 33, and then the bolt 33 can be pulled out from the inner wall of the circular hole 32. This allows the handrail 1 to be removed from the inner wall of the elastic arc block 31 for easy replacement.

[0034] Figure 4 The outer surface of the screw hole block 34 shown has a hexagonal longitudinal section. By making the outer surface of the bolt 33 hexagonal, the hexagonal edges increase the surface contact friction, making it easier to grip manually and also easier to clamp and tighten with a correspondingly shaped tightening tool. The inner wall of the pad 35 is fitted onto the outer surface of one end of the bolt 33, and the pad 35 is positioned between the screw hole block 34 and one side of the elastic arc block 31. By setting the pad 35, the contact area between one side of the screw hole block 34 and the elastic arc block 31 can be increased, making it more secure when fixed. A connecting rope 36 is fixedly connected to one end of the bolt 33, and one end of the connecting rope 36 is fixedly connected to the outer surface of the elastic arc block 31. By setting the connecting rope 36, the bolt 33 can be limited and fixed on the outer surface of the elastic arc block 31, making it less likely to be lost.

[0035] Working principle: When the handrail 1 is installed on a rail transit vehicle with the help of the fixing rod 4, if the passenger flow in the carriage increases during peak hours, the connecting rod 26 can be manually grasped and moved downwards. This causes one end of several locking blocks 27 to slide downwards in the inner wall of the locking hole 22 to a certain position. Then, the extension rod 24 is grasped and pulled to one end, causing the round rod 23 to slide outwards in the inner wall of the grooved rod 21 to a certain distance. After releasing the connecting rod 26, the locking blocks 27 can be locked into the locking hole 22 and the corresponding locking groove 25 under the reset action of the spring 28, thus fixing and limiting the extension rod 24. This increases the gripping area and gripping points of the handrail 1, allowing more passengers to grip it during peak hours, reducing safety hazards during vehicle operation and improving the applicability of the traditional handrail 1. Similarly, when not in use, it can be stored on the outer surface of the handrail 1.

[0036] When the handrail 1 is deformed and damaged and needs to be replaced, without removing the fixing rod 4 from the carriage, the screw hole block 34 can be screwed off the bolt 33, and then the bolt 33 can be pulled out from the inner wall of the round hole 32, so that the handrail 1 can be removed from the inner wall of the elastic arc block 31 for easy replacement.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An expandable handrail for rail transit, comprising a handrail bar (1) and several fixed bars (4), characterized in that: The outer surface of the handrail (1) is provided with several extension devices (2), and a detachable device (3) is provided between the outer surface of the handrail (1) and one end of several fixed rods (4). The extension devices (2) can increase the contact area of ​​the outer surface of the handrail (1) by adjustment, thereby expanding the gripping area. The detachable device (3) can remove the handrail (1) from the fixed rods (4) for easy replacement.

2. The expandable handrail for rail transit according to claim 1, characterized in that: The extension device (2) includes an extension rod (24) and a connecting rod (26). A plurality of grooved rods (21) are connected to the outer surface of the handrail (1). A locking hole (22) is provided on one side of the inner wall of the grooved rod (21). A round rod (23) is slidably connected to the inner wall of the grooved rod (21). One end of the round rod (23) is fixedly connected to the inner wall of the extension rod (24). The outer surface of the round rod (23) is symmetrically provided with locking grooves (25). The outer surface of the handrail (1) is inserted into the inner wall of the extension rod (24). Several locking blocks (27) are fixedly connected to the outer surface of the connecting rod (26). One end of the locking block (27) is inserted into the inner wall of the locking hole (22) and the locking groove (25). A spring (28) is sleeved on the outer surface of one end of the locking block (27). The two ends of the spring (28) are fixedly connected to one side of the locking block (27) and the outer surface of the groove rod (21), respectively.

3. An expandable handrail for rail transit according to claim 2, characterized in that: The outer surface of the extension rod (24) is fixedly connected with a number of anti-slip strips (29), and the number of anti-slip strips (29) are arranged at equal distances.

4. An expandable handrail for rail transit according to claim 2, characterized in that: A reinforcing rod (210) is symmetrically fixedly connected to the outer surface of one end of the grooved rod (21), and one side of the reinforcing rod (210) is fixedly connected to the outer surface of the handrail (1).

5. An expandable handrail for rail transit according to claim 1, characterized in that: The detachable device (3) includes several bolts (33), several screw hole blocks (34) and several pads (35). One end of the fixing rod (4) is fixedly connected to an elastic arc block (31). The outer surface of the handrail (1) is inserted into the inner wall of the elastic arc block (31). Circular holes (32) are symmetrically opened on one side of both ends of the elastic arc block (31). One end of the bolt (33) is inserted into the inner wall of the circular hole (32), and the other end of the bolt (33) is spirally inserted into the inner wall of the screw hole block (34).

6. An expandable handrail for rail transit according to claim 5, characterized in that: The longitudinal section of the outer surface of the screw hole block (34) is hexagonal.

7. An expandable handrail for rail transit according to claim 5, characterized in that: The inner wall of the pad (35) is fitted onto the outer surface of one end of the bolt (33), and the pad (35) is positioned between one side of the screw hole block (34) and the elastic arc block (31).

8. An expandable handrail for rail transit according to claim 5, characterized in that: One end of the bolt (33) is fixedly connected to a connecting rope (36), and one end of the connecting rope (36) is fixedly connected to the outer surface of the elastic arc block (31).

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