Liftable rail transit guard fence

Abstract

The application discloses a liftable protective fence for rail transit, and relates to the technical field of rail transit.The structure of the liftable protective fence comprises a base shell, the base shell is embedded underground, the top of the base shell is just kept flush with the ground, lifting mechanisms are arranged on the two sides of the inside of the base shell, a protective cover is arranged between the two lifting mechanisms, hydraulic rods are fixedly connected to the inside bottom side of the base shell, the number of the hydraulic rods is multiple, and the top ends of the multiple hydraulic rods are fixedly connected with slide rails.The liftable protective fence for rail transit can adaptively adjust the door plate according to the distance between vehicles and align the door plate with the vehicle door, improves the convenience of the up-and-down traffic of tourists, and when the vehicle stops at the station, the whole protective fence does not need to be lifted or removed, thereby achieving better protection effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a liftable protective fence for rail transit. BACKGROUND

[0002] Protective fences are everywhere in our life. Protective fences are widely used in municipal engineering, traffic, community, port, airport, warehouse area maintenance and construction, etc. to protect personal safety, equipment and facilities, and to isolate and protect construction sites. In rail transit, protective fences are core facilities to ensure driving safety and operational efficiency. They can serve as a physical isolation barrier to prevent passengers from entering the rail area, reduce the risk of accidents, quickly block dangerous areas in emergency situations, optimize passenger flow diversion, and realize barrier-free access in cooperation with automatic door systems. They can improve passenger gathering efficiency. Most rail transit protective fences are fixed fences that mainly address safety hazards caused by high-speed train operation and focus on physical isolation functions. With the expansion of urban rail transit and intercity railway networks, the limitations of traditional fences in terms of traffic efficiency and emergency response have gradually emerged. Fixed fences are difficult to adapt to dynamic needs. Therefore, a liftable protective fence for rail transit is proposed.

[0003] Existing liftable protective fences for rail transit are generally equipped with access doors to facilitate passenger access. However, high-speed rail and city rail generally adopt a mixed running mode with multiple vehicle types. The door spacing of different vehicle types differs, so after the vehicle stops, the doors may not be aligned with the access doors on the protective fence, reducing the convenience of passengers getting on and off the vehicle. Moreover, after the vehicle stops, there is still a large gap between the vehicle and the platform. If the protective fence is lifted or removed as a whole, people may accidentally fall into the gap, posing a safety hazard. SUMMARY

[0004] (I) Technical problems solved

[0005] To address the shortcomings of the prior art, the present application provides a liftable protective fence for rail transit, which solves the problem of different vehicle door spacings, which may not be aligned with the access doors on the protective fence after the vehicle stops, reducing the convenience of passengers getting on and off the vehicle. Moreover, after the vehicle stops, there is still a large gap between the vehicle and the platform. If the protective fence is lifted or removed as a whole, people may accidentally fall into the gap, posing a safety hazard.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: A liftable protective fence for rail transit, comprising a base shell, the base shell is buried underground, the top of the base shell is flush with the ground, the inside of the base shell is provided with a lifting mechanism on both sides, a protective cover is arranged between the two lifting mechanisms, a hydraulic rod is fixedly connected to the inside bottom of the base shell, the number of the hydraulic rods is provided to be multiple, the top ends of the multiple hydraulic rods are fixedly connected to a slide rail, the top side of the slide rail is provided with a moving mechanism, the number of the moving mechanisms is provided to be multiple, a telescopic rod is installed between the adjacent two moving mechanisms, the outside of the telescopic rod is sleeved with a bellows, when the high-speed rail and the like are about to enter the station, the lifting mechanism drives the protective cover to move upward, at the same time, the hydraulic rod drives the slide rail to move upward, so that the moving mechanism and the telescopic rod on the slide rail move upward until the top of the slide rail moves to the ground flush, and the protective cover continues to move upward until the protective cover moves to the top side of the moving mechanism, thereby preventing people from climbing over the top side of the moving mechanism, and achieving a good intercepting effect, the distance between the adjacent two moving mechanisms can be changed through the telescopic rod, and the surface of the telescopic rod can be adaptively protected through the bellows.

[0008] Preferably, the slide rail and the moving mechanism are sleeved in the inside of the protective cover, the protective cover is made of a translucent material, when the protective cover is in the inside of the base shell, the moving mechanism and the like can be protected, the pollution of the moving mechanism by the dust on the ground is prevented, and the inside wall top side of the protective cover can be irradiated by the prompt light through the translucent material, so that people can easily see the light, thereby prompting the position of the door plate, making it convenient for people far away to see and find the position of the high-speed rail door, and enabling people to quickly enter, so that the high-speed rail station and the like can be orderly carried out.

[0009] Preferably, the moving mechanism comprises a U-shaped plate, the telescopic rod is fixedly connected between the adjacent two U-shaped plates, a first accommodating cavity is formed in the inside of the U-shaped plate, door plates are arranged on both inside of the U-shaped plate, one side of the door plate is slidably connected to the inside of the first accommodating cavity, the movable U-shaped plate can drive the door plate to move freely, so that the door plate can be moved to a suitable position as needed, that is, the door plate can be adjusted according to different vehicle types and different distance vehicle doors, and the protective fence can be used on different vehicle types, thereby improving the practicability of the protective fence.

[0010] Preferably, the bottom of the U-shaped plate is fixedly connected with a pulley on both sides, a drive is fixedly installed on one side of the pulley, the drive is fixedly connected to the bottom of the U-shaped plate, the pulley can be forwardly rotated or reversely rotated through the drive, thereby enabling the moving mechanism to move left and right as needed.

[0011] Preferably, the top of the U-shaped plate is fixedly connected with a prompt light on both sides, the top of the U-shaped plate is fixedly connected with a visual sensor on one side, and the top of the U-shaped plate is fixedly connected with a displacement sensor on the other side. The visual sensor assists the moving mechanism to locate the position of the high-speed rail door, so that the door plate on the moving mechanism can be aligned with the high-speed rail door. The displacement sensor monitors the distance corresponding to the high-speed rail door, and then moves the corresponding distance to stop in front of the high-speed rail door. The visual sensor monitors the alignment of the center position of the door plate with the center position of the high-speed rail door. The prompt light is irradiated onto the translucent protective cover above, so that people can easily see the light and find the position of the door plate, thereby realizing rapid boarding.

[0012] Preferably, the front side of the door plate is fixedly connected with a limiting block, and the inside of the U-shaped plate is provided with a limiting groove. The limiting block is slidingly connected in the limiting groove. The sliding of the limiting block in the limiting groove can stably connect the door plate and the U-shaped plate, and the limiting block and the limiting groove can make the two door plates contact when closed.

[0013] Preferably, the inside of the U-shaped plate is provided with a second accommodating cavity, and the inside of the second accommodating cavity is fixedly connected with a motor. The output end of the motor is fixedly connected with a gear. The back of the door plate is provided with a gear slot. The gear is engagedly connected in the inside of the gear slot. One side of the door plate is fixedly connected with a limiting plate. The limiting plate is located at the end of the gear slot. The gear drives the gear slot to move, thereby realizing the movement of the door plate. The opening and closing of the door plate are realized, and the visual sensor and the displacement sensor can realize the automatic opening and closing of the door plate.

[0014] Preferably, the lifting mechanism comprises a sliding groove. The bottom end of the sliding groove is fixedly connected to the inside of the base shell. The top end of the sliding groove passes through the base shell and extends to the top side of the base shell. A lead screw is rotatably connected in the inside of the sliding groove. The top end of the lead screw passes through the inner wall of the sliding groove and is fixedly connected with a power element. The power element is fixedly connected to the top end of the sliding groove.

[0015] Preferably, the surface of the lead screw is threadedly connected with a threaded sleeve, the number of the threaded sleeves is two, both of the threaded sleeves are fixedly connected to one side of the protective cover, the surface of the threaded sleeve is rotatably connected with a roller, the roller is rollingly connected to the inner wall of the sliding groove, the power member drives the lead screw to rotate in the sliding groove, the protective cover is limited by the base shell, thereby limiting the up and down movement of the threaded sleeve on the surface of the lead screw, and then the threaded sleeve drives the protective cover to move up and down, when the high-speed rail or the like enters the station, the lifting mechanism drives the protective cover to move upwards until the top position of the sliding groove, after the high-speed rail or the like leaves the station, the lifting mechanism drives the protective cover to descend to the inside of the base shell, and the top of the protective cover, the top of the base shell and the ground are on the same plane, the lifting mechanism can lift and lower the protective cover, thereby conveniently protecting the protective cover.

[0016] Preferably, the front bottom side and the back bottom side of the base shell are fixedly connected with a reinforcing rib, the surface of the reinforcing rib and the surface of the base shell are fixedly connected with a reinforcing plate, the front top side and the back bottom side of the base shell are fixedly connected with a mounting plate, the base shell is embedded in the side of the rail transit platform, the base shell is fixed on the platform by the mounting plate, the reinforcing rib and the reinforcing plate can strengthen the performance of the base shell, prolong the service life of the base shell, and the base shell is embedded more stably by the reinforcing rib and the reinforcing plate, the stability of the fence as a whole is improved, and the use effect is better.

[0017] (Three) beneficial effects

[0018] The application provides a liftable rail transit protective fence.

[0019] (I) The liftable rail transit protective fence is provided with a moving mechanism and a telescopic rod, can adaptively adjust the door plate according to the distance between vehicles and align the door plate with the vehicle door, and the telescopic rod can be adaptively adjusted, thereby improving the convenience of tourists in getting on and off the vehicle, and when the vehicle stops at the station, the entire protective fence does not need to be lifted or removed, thereby achieving better protection.

[0020] (II) The liftable rail transit protective fence is provided with a protective cover, a telescopic rod and a moving mechanism, can realize protection by the protective cover above the fence and protection by the telescopic rod below the fence before the high-speed rail enters the station, prevent people from climbing over the fence from above and getting stuck in the gap between the platform and the train, and is collected after the train leaves the station, thereby improving the protection effect of the fence and further ensuring the safety of tourists.

[0021] (Three), the liftable rail transit guardrail, through the setting of the protective cover and the moving mechanism in the underground base shell, can reduce the land occupation and space occupation of the guardrail after the vehicle drives away and the guardrail retracts, and improve the smoothness of the platform surface.

[0022] (Four), the liftable rail transit guardrail, through the setting of the protective cover outside the moving mechanism, can protect the moving mechanism and other components through the protective cover after the moving mechanism retracts into the base shell, reduce the damage caused by the pollution of dust on the ground to the moving mechanism, and prolong the service life of the whole protective guardrail.

[0023] (Five), the liftable rail transit guardrail, made of translucent material, can make the prompt light irradiate to the inner wall top side of the protective cover, so that people can see the light easily, and then prompt the position of the door plate, make people see and find the position of the high-speed rail door easily, and then people can pass through quickly, improve the orderliness of the high-speed rail station operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the present application;

[0025] Figure 2 It is the front view of the present application;

[0026] Figure 3 It is the partial side view of the present application;

[0027] Figure 4 It is the partial structure diagram of the base shell inside the present application;

[0028] Figure 5 It is the structure diagram of the telescopic rod of the present application;

[0029] Figure 6 It is the overall structure diagram of the moving mechanism of the present application;

[0030] Figure 7 It is the front view of the U-shaped plate of the present application;

[0031] Figure 8 It is the back structure diagram of the door plate of the present application;

[0032] Figure 9 It is the top view of the U-shaped plate and the door plate of the present application;

[0033] Figure 10 It is the overall front view of the lifting mechanism of the present application;

[0034] Figure 11 It is the top view of the lifting mechanism of the present application.

[0035] Fig. 1, base shell; 2, lifting mechanism; 201, sliding groove; 202, screw rod; 203, power element; 204, threaded sleeve; 205, roller; 3, protective cover; 4, hydraulic rod; 5, sliding rail; 6, moving mechanism; 601, U-shaped plate; 602, first containing cavity; 603, door plate; 604, pulley; 605, driver; 606, prompt light; 607, visual sensor; 608, displacement sensor; 609, limiting block; 610, limiting groove; 611, second containing cavity; 612, motor; 613, gear; 614, gear slot; 615, limiting plate; 7, telescopic rod; 8, bellows; 9, reinforcing rib; 10, reinforcing plate; 11, mounting plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0037] Reference Figures 1-11 The present application provides a technical solution: a liftable protective fence for rail transit, which comprises a base shell 1, the base shell 1 is buried underground, the top of the base shell 1 is flush with the ground, lifting mechanisms 2 are arranged on both sides of the inside of the base shell 1, a protective cover 3 is arranged between the two lifting mechanisms 2, hydraulic rods 4 are fixedly connected to the inside bottom side of the base shell 1, the number of the hydraulic rods 4 is multiple, a sliding rail 5 is fixedly connected to the top ends of the multiple hydraulic rods 4, moving mechanisms 6 are arranged on the top side of the sliding rail 5, the number of the moving mechanisms 6 is multiple, telescopic rods 7 are installed between adjacent two moving mechanisms 6, bellows 8 are sleeved outside the telescopic rods 7, when a high-speed rail or the like is about to enter the station, the lifting mechanisms 2 drive the protective cover 3 to move upward, at the same time, the hydraulic rods 4 drive the sliding rail 5 to move upward, so that the moving mechanisms 6 and the telescopic rods 7 on the sliding rail 5 move upward until the top of the sliding rail 5 is flush with the ground, and the protective cover 3 continues to move upward until the protective cover 3 moves to the top side of the moving mechanisms 6, thereby preventing people from climbing over the top side of the moving mechanisms 6, and achieving a good intercepting effect, the distance between adjacent two moving mechanisms 6 can be changed through the telescopic rods 7, and the surface of the telescopic rods 7 can be adaptively expanded and contracted through the bellows 8.

[0038] The sliding rail 5 and the moving mechanism 6 are sleeved in the protective cover 3, the protective cover 3 is made of a translucent material, when the protective cover 3 is in the base shell 1, the moving mechanism 6 and the like can be protected, the dust on the ground can not pollute the moving mechanism 6, and the translucent material can make the prompt light 606 irradiate the inner wall top side of the protective cover 3, so that people can see the light, and the position of the door plate 603 is prompted, people far away can see and find the position of the high-speed rail door, and then people can quickly enter the inside, so that the high-speed rail station can be orderly carried out.

[0039] The moving mechanism 6 includes the U-shaped plate 601, the telescopic rod 7 is fixedly connected between the adjacent two U-shaped plates 601, the first containing cavity 602 is arranged in the U-shaped plate 601, the door plate 603 is arranged on the two inner sides of the U-shaped plate 601, one side of the door plate 603 is slidably connected in the first containing cavity 602, the U-shaped plate 601 can drive the door plate 603 to move freely, so that the door plate 603 can be moved to a suitable position according to needs, that is, the door plate 603 can be adjusted according to different vehicle types and different distances.

[0040] The U-shaped plate 601 is fixedly connected with the pulley 604 on the two sides of the bottom, the drive 605 is fixedly installed on one side of the pulley 604, the drive 605 is fixedly connected to the bottom of the U-shaped plate 601, the pulley 604 can be forwardly rotated or reversely rotated through the drive 605, so that the moving mechanism 6 can move left and right according to needs.

[0041] The U-shaped plate 601 is fixedly connected with the prompt light 606 on the two sides of the top, the visual sensor 607 is fixedly connected to one side of the top of the U-shaped plate 601, and the displacement sensor 608 is fixedly connected to the other side of the top of the U-shaped plate 601, the visual sensor 607 can assist the moving mechanism 6 to find the position of the high-speed rail door, so that the door plate 603 on the moving mechanism 6 can be aligned with the high-speed rail door, the distance from the high-speed rail door is monitored through the displacement sensor 608, then the corresponding distance is moved to stop in front of the high-speed rail door, the central position of the door plate 603 is aligned with the central position of the high-speed rail door through the monitoring of the visual sensor 607, and the prompt light 606 irradiates the translucent protective cover 3 above, so that people can see the light and find the position of the door plate 603, and then rapid boarding is realized.

[0042] The front side of the door plate 603 is fixedly connected with a limiting block 609, the inside of the U-shaped plate 601 is provided with a limiting groove 610, the limiting block 609 is slidably connected in the limiting groove 610, and the door plate 603 and the U-shaped plate 601 are stably connected through sliding of the limiting block 609 in the limiting groove 610, and the two door plates 603 just contact when being closed through the limiting block 609 and the limiting groove 610.

[0043] The inside of the U-shaped plate 601 is provided with a second containing cavity 611, the inside of the second containing cavity 611 is fixedly connected with a motor 612, the output end of the motor 612 is fixedly connected with a gear 613, the back of the door plate 603 is provided with a gear slot 614, the gear 613 is meshingly connected in the inside of the gear slot 614, one side of the door plate 603 is fixedly connected with a limiting plate 615, the limiting plate 615 is located at the end of the gear slot 614, when the U-shaped plate 601 moves to the front of the high-speed rail door and is stable, the door plate 603 is opened, when being opened, the motor 612 drives the gear 613 to rotate, the door plate 603 is moved and opened due to meshing of the gear 613 and the gear slot 614, thereby facilitating people to enter, when being closed, the motor 612 drives the gear 613 to reverse, thereby reversely moving and closing the door plate 603.

[0044] The lifting mechanism 2 comprises a sliding groove 201, the bottom end of the sliding groove 201 is fixedly connected in the inside of the base shell 1, the top end of the sliding groove 201 penetrates through the base shell 1 and extends to the top side of the base shell 1, a lead screw 202 is rotatably connected in the inside of the sliding groove 201, the top end of the lead screw 202 penetrates through the inner wall of the sliding groove 201 and is fixedly connected with a power piece 203, and the power piece 203 is fixedly connected to the top end of the sliding groove 201.

[0045] The surface of the lead screw 202 is threadedly connected with a threaded sleeve 204, the number of the threaded sleeves 204 is two, and the two threaded sleeves 204 are fixedly connected to one side of the protective cover 3. The surface of the threaded sleeve 204 is rotatably connected with a roller 205, and the roller 205 is rollingly connected to the inner wall of the sliding groove 201. When the lifting mechanism 2 works, the power piece 203 drives the lead screw 202 to rotate in the sliding groove 201, the protective cover 3 is limited by the base shell 1, thereby limiting the threaded sleeve 204 to move up and down on the surface of the lead screw 202, and the threaded sleeve 204 drives the protective cover 3 to move up and down. When the high-speed rail or the like enters the station, the lifting mechanism 2 drives the protective cover 3 to move upwards until the top position of the sliding groove 201, and when the high-speed rail or the like leaves the station, the lifting mechanism 2 drives the protective cover 3 to move downwards to the inside of the base shell 1, and the top of the protective cover 3, the top of the base shell 1 and the ground are in the same plane.

[0046] The reinforcing rib 9 is fixedly connected to the front bottom side and the back bottom side of the base shell 1, the surface of the reinforcing rib 9 is fixedly connected with the surface of the base shell 1, the mounting plate 11 is fixedly connected to the front top side and the back bottom side of the base shell 1, the base shell 1 is embedded in the side of the rail transit platform, the base shell 1 is fixed on the platform through the mounting plate 11, the performance of the base shell 1 is strengthened by the reinforcing rib 9 and the reinforcing plate 10, the service life of the base shell 1 is prolonged, and the embedding of the base shell 1 is more stable by the reinforcing rib 9 and the reinforcing plate 10, and the stability of the fence as a whole is improved.

[0047] Working process: when the high-speed rail is about to enter the station, the hydraulic rod 4 and the power piece 203 are controlled to work at the same time by the external total control system, the sliding rail 5 is driven by the hydraulic rod 4 to move upwards, so that the moving mechanism 6 and the like on the sliding rail 5 move upwards, until the top of the sliding rail 5 is flush with the ground, the hydraulic rod 4 stops working, the other power piece 203 works at the same time with the hydraulic rod 4, and the power piece 203 drives the screw rod 202 to rotate, the threaded sleeve 204 on the screw rod 202 moves upwards and drives the protective cover 3 to move upwards, when the bottom side of the protective cover 3 is flush with the ground, i.e. after the hydraulic rod 4 stops working when the sliding rail 5 is flush with the ground, the protective cover 3 continues to move upwards until the top side of the moving mechanism 6, the space on the bottom side is protected by the moving mechanism 6 and the telescopic rod 7 arranged therebetween, the space on the top side of the moving mechanism 6 is shielded by the protective cover 3, so that people are prevented from climbing over the telescopic rod 7 and the moving mechanism 6, thereby the double protection of the telescopic rod 7 and the protective cover 3 improves the protection effect of the fence;

[0048] After the moving mechanism 6 rises to the ground, the corresponding door is found by the visual sensor 607 and the displacement sensor 608 and corresponding movement adjustment is performed, so that the door plate 603 is just stopped in front of the door, when moving, the pulley 604 is rotated by the driver 605, so that the pulley 604 slides in the inside of the sliding rail 5, and then the U-shaped plate 601 slides above the sliding rail 5, until the U-shaped plate 601 moves to the position of the door, the driver 605 stops working, the pulley 604 stops, and the U-shaped plate 601 also stops moving, then the motor 612 is started to drive the gear 613 to rotate, the gear 613 drives the door plate 603 to open through the tooth groove 614, so that people can pass through the door plate 603 and the door to enter the vehicle, when the U-shaped plate 601 moves, the telescopic rod 7 is adaptively telescopic, so that the adjacent two moving mechanisms 6 are intercepted by the telescopic rod 7, and the protection effect is achieved;

[0049] After the door is closed, the corresponding door plate 603 is closed, that is, the motor 612 reverses to reverse the gear 613, so that the door plate 603 reverses and closes, until all the door plates 603 are closed, and the high-speed train leaves the station, the power element 203 and the hydraulic rod 4 work, the hydraulic rod 4 drives the slide rail 5 to move downward, so that the U-shaped plate 601 moves downward until the U-shaped plate 601 is completely lowered into the inside of the base shell 1, and at the same time the power element 203 drives the lead screw 202 to reverse, the threaded sleeve 204 on the lead screw 202 drives the protective cover 3 to move downward until the protective cover 3 is lowered into the inside of the base shell 1 and the top of the protective cover 3 is flush with the ground, so that people will not be tripped when walking, and the protective cover 3 can protect the moving mechanism 6 under the ground.

[0050] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0051] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A liftable protective fence for rail transit, comprising a base shell (1), characterized in that: The base shell (1) is buried underground, and the top of the base shell (1) is flush with the ground. Lifting mechanisms (2) are provided on both sides of the interior of the base shell (1). A protective cover (3) is provided between the two lifting mechanisms (2). A hydraulic rod (4) is fixedly connected to the bottom of the inner side of the base shell (1). There are multiple hydraulic rods (4). The top of the multiple hydraulic rods (4) is fixedly connected to a slide rail (5). A moving mechanism (6) is provided on the top side of the slide rail (5). There are multiple moving mechanisms (6). A telescopic rod (7) is installed between two adjacent moving mechanisms (6). A corrugated pipe (8) is sleeved on the outside of the telescopic rod (7).

2. The liftable protective fence for rail transit according to claim 1, characterized in that: The slide rail (5) and the moving mechanism (6) are both fitted inside the protective cover (3), which is made of a semi-transparent material.

3. The liftable protective fence for rail transit according to claim 1, characterized in that: The moving mechanism (6) includes a U-shaped plate (601), and the telescopic rod (7) is fixedly connected between two adjacent U-shaped plates (601). A first receiving cavity (602) is provided inside the U-shaped plate (601), and door panels (603) are provided on the two inner sides of the U-shaped plate (601). One side of the door panel (603) is slidably connected to the inside of the first receiving cavity (602).

4. A liftable protective fence for rail transit according to claim 3, characterized in that: The bottom sides of the U-shaped plate (601) are fixedly connected to pulleys (604), and a driver (605) is fixedly installed on one side of the pulley (604). The driver (605) is fixedly connected to the bottom of the U-shaped plate (601).

5. A liftable protective fence for rail transit according to claim 3, characterized in that: Indicator lights (606) are fixedly connected to both sides of the top of the U-shaped plate (601), a vision sensor (607) is fixedly connected to one side of the top of the U-shaped plate (601), and a displacement sensor (608) is fixedly connected to the other side of the top of the U-shaped plate (601).

6. A liftable protective fence for rail transit according to claim 3, characterized in that: A limiting block (609) is fixedly connected to the front side of the door panel (603), and a limiting groove (610) is opened on the inner front of the U-shaped plate (601). The limiting block (609) is slidably connected to the inside of the limiting groove (610).

7. A liftable protective fence for rail transit according to claim 3, characterized in that: The U-shaped plate (601) has a second receiving cavity (611) on its front side. A motor (612) is fixedly connected inside the second receiving cavity (611). A gear (613) is fixedly connected to the output end of the motor (612). A toothed groove (614) is opened on the back side of the door panel (603). The gear (613) is meshed with the inside of the toothed groove (614). A limiting plate (615) is fixedly connected to one side of the door panel (603). The limiting plate (615) is located at the end of the toothed groove (614).

8. A liftable protective fence for rail transit according to claim 1, characterized in that: The lifting mechanism (2) includes a slide (201), the bottom end of which is fixedly connected to the inside of the base shell (1), the top end of which passes through the base shell (1) and extends to the top side of the base shell (1), a lead screw (202) is rotatably connected inside the slide (201), the top end of which passes through the inner wall of the slide (201) and is fixedly connected to a power component (203), and the power component (203) is fixedly connected to the top end of the slide (201).

9. A liftable protective fence for rail transit according to claim 8, characterized in that: The screw (202) is threaded with a threaded sleeve (204). There are two threaded sleeves (204). Both threaded sleeves (204) are fixedly connected to one side of the protective cover (3). The surface of the threaded sleeve (204) is rotatably connected with a roller (205). The roller (205) is rotatably connected to the inner wall of the groove (201).

10. A liftable protective fence for rail transit according to claim 1, characterized in that: The base shell (1) is fixedly connected to the bottom front side and the bottom back side with reinforcing ribs (9), and the surface of the reinforcing ribs (9) and the surface of the base shell (1) are fixedly connected to reinforcing plates (10). The base shell (1) is fixedly connected to the top front side and the bottom back side with mounting plates (11).

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