Safety shielding door for rail transit

Abstract

The utility model provides a safety shielding door for rail transit, which relates to the field of rail transit and comprises an upper rail (10) and a lower rail (20), and a left shielding door component and a right shielding door component are slidably arranged between the upper rail (10) and the lower rail (20). The shielding door assembly comprises a shielding door main body (31), an anti-clamping block (32) and a buffer mechanism; two first racks (311) are arranged in the upper rail (10) corresponding to the left shielding door body (31), two second racks (312) are arranged in the upper rail (10) corresponding to the right shielding door body (32), the first racks (311) and the second racks (312) are distributed in a staggered mode, a first sliding groove (101) is formed in the upper rail (10) corresponding to the first racks (311), a second sliding groove (102) is formed in the upper rail (10) corresponding to the second racks (312), and damping mechanisms are arranged at the left end and the right end of the first sliding groove (101) and the left end and the right end of the second sliding groove (102) respectively. The shielding door can effectively provide buffering in the closing process, and clamping injury or mechanism damage in the closing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a safety screen door for rail transportation. Background Art

[0002] The screen door is set on the train platform and surrounds the subway platform and the train boarding and alighting space in the form of a glass curtain wall. It is used to separate the platform area from the track area to prevent passengers from falling into the track area and causing unnecessary safety hazards. Chinese patent document CN217326983U discloses a new type of anti-collision mechanism for subway screen doors. It sets a transmission rack and a transmission gear so that when the two sets of screen door bodies are closed, the driving shaft drives the rotating baffle rod to rotate and lift upward, so that the rotating baffle rod is respectively inserted into the inside of the two sets of L-shaped limit strips to support the middle part of the two sets of screen door bodies and play an anti-collision effect; by setting a support roller at the bottom end of the screen door body, the limit effect is achieved while starting to reduce the friction resistance. Then, the subway screen door does not have a sensitive anti-pinch structure. When a foreign object suddenly breaks into the screen door during its closing process, although the screen door is braked in the reverse direction in time, the screen door still has the inertial movement of closing. The short-term closing of the screen door can easily cause passengers to be pinched or objects to be damaged. In addition, if the screen door detects a foreign object that suddenly breaks into the screen door during the closing process and performs reverse braking in time, the lack of a buffer mechanism and the large braking friction can easily cause serious wear and aging of the braking mechanism, reduce the service life of the braking mechanism (such as gears, motors, etc.), and increase the maintenance, inspection, and replacement costs of the screen door in the later stage. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a safety shield door for rail transit, which can provide a buffer during the closing process to avoid problems such as large closing inertia and large reverse braking friction during the closing process after a foreign object suddenly breaks into it, thereby avoiding problems such as pinching damage to foreign objects or pinching injuries to personnel, and severe friction and aging of the braking mechanism.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A safety screen door for rail transit comprises an upper track and a lower track, wherein left and right screen door assemblies are slidably arranged between the upper track and the lower track; the screen door assembly comprises a screen door body, an anti-pinch block and a buffer mechanism, a sliding slot is arranged on the side of the screen door bodies close to each other, an anti-pinch block is slidably arranged in the sliding slot, and the anti-pinch block is connected to the corresponding sliding slot through the buffer mechanism; two first racks are slidably arranged in the upper track corresponding to the left screen door body, and two second racks are slidably arranged in the upper track corresponding to the right screen door body, the first racks and the second racks are staggered, a first slide groove is arranged in the upper track corresponding to the first rack, and a second slide groove is arranged corresponding to the second rack, and damping mechanisms are respectively arranged at the left and right ends of the first slide groove and the second slide groove.

[0006] Based on further optimization of the above scheme, a T-shaped slide groove (i.e., the longitudinal cross-section of the T-shaped slide groove is a T-shaped structure) is provided on the bottom surface of the upper rail (located at the lower side of the first slide groove or the second slide groove) and the end surface of the lower rail, and the protruding end of the T-shaped slide groove faces the shielding door assembly. The T-shaped slide groove of the upper rail is connected with the first slide groove and the second slide groove, and the upper and lower ends of the shielding door body are respectively slidably engaged in the corresponding T-shaped slide grooves.

[0007] Based on the further optimization of the above scheme, a rubber layer is fixedly arranged on the side surface of the anti-pinch block away from the sliding slot, one is to provide a buffer when clamping an object, and the other is to utilize the elastic deformation of the rubber to ensure the sealing of the two shielding door bodies after closing.

[0008] Based on the further optimization of the above scheme, the buffer mechanism includes a buffer spring, a sliding rod, a slider, a connecting rod and a return spring. The middle part of the sliding slot is arranged as a boss structure protruding toward the anti-pinch block and the end face of the boss structure is connected to the anti-pinch block through evenly distributed buffer springs; the two sides of the boss structure are connected to the inner wall of the sliding slot through sliding rods respectively, the outer walls of the sliding rods are slidably sleeved on the sliders respectively and the sliders are slidably connected to the corresponding side walls of the sliding slot, the slider is connected to the corresponding side faces of the anti-pinch block through a connecting rod and the connecting rod is rotatably connected to the slider and the anti-pinch block respectively; the slider is connected to the corresponding inner wall of the sliding slot through a return spring, and the return spring is located on the outer ring of the corresponding sliding rod and is coaxially arranged with the corresponding sliding rod.

[0009] Based on further optimization of the above scheme, an infrared transmitter and an infrared receiver are respectively arranged on the side surfaces of the two groups of anti-pinch blocks away from the sliding slot; an infrared ranging sensor is arranged on the top surface of the boss structure and between the buffer springs, and a reflective surface is arranged on the side surface of the anti-pinch block close to the sliding slot and corresponding to the infrared ranging sensor.

[0010] Based on further optimization of the above scheme, the first rack and the second rack are controlled by a gear mechanism arranged in the upper track, and the gear mechanism includes a first rotating shaft, a first connecting wheel, a first transmission wheel, a second rotating shaft, a second connecting wheel and a second transmission wheel. The first rotating shaft and the second rotating shaft are arranged in parallel in the upper track and the middle outer wall of the first rotating shaft is fixedly sleeved with the first connecting wheel, and the middle outer wall of the second rotating shaft is fixedly sleeved with the second connecting wheel, and the first connecting wheel is meshed with the second connecting wheel; the outer wall of the first rotating shaft corresponds to the first rack and is respectively sleeved with the first transmission wheel and they are meshed with each other, and the outer wall of the second rotating shaft corresponds to the second rack and is respectively sleeved with the second transmission wheel and they are meshed with each other.

[0011] Based on further optimization of the above scheme, the first connecting wheel and the second connecting wheel have the same outer diameter, and their radius is smaller than the center distance between the first rotating shaft and the second rotating shaft; the first transmission wheel and the second transmission wheel have the same outer diameter, and their outer diameters are larger than the outer diameter of the connecting wheel (i.e., the first connecting wheel or the second connecting wheel).

[0012] Based on further optimization of the above scheme, the damping mechanism includes a damping block and a damping spring. The damping block is slidably arranged in the corresponding slide groove (i.e., the first slide groove or the second slide groove), and the side of the damping block away from the corresponding rack (i.e., the first rack or the second rack) is connected to the side wall of the corresponding slide groove (i.e., the first slide groove or the second slide groove) through the damping spring.

[0013] The following are the technical effects of the utility model:

[0014] The present application uses the first rack and the second rack to hoist the left and right shielding door bodies through the staggered distribution. Firstly, the stability of the shielding door body is increased to prevent the shielding door body from shaking due to external force. Secondly, the driving force of the gear mechanism on the shielding door body is improved to ensure the smoothness of the left and right sliding of the shielding door body. At the same time, through the setting of the damping mechanism, the sliding speed of the shielding door body is gradually attenuated when the shielding door bodies are approaching or moving away from each other or moving to extreme points (i.e. when closing or fully opening), thereby effectively avoiding the closing process, the sudden intrusion of foreign objects causing emergency braking of the shielding door body, causing serious wear of the braking mechanism, and the sudden intrusion of foreign objects being clamped and damaged due to the inertia force of closing. In addition, the present application realizes a sensitive anti-pinch function by setting a buffer mechanism in coordination with a damping structure; by utilizing a soft connection (i.e., a buffer spring) in coordination with a hard connection (i.e., a mechanism consisting of a sliding rod, a slider, a connecting rod, and a return spring), firstly, the anti-pinch block can be firmly positioned to prevent the anti-pinch block from swinging during movement; secondly, when foreign objects are present during the closing process, a buffer time can be provided to facilitate the shielding door body to change its direction of movement, thereby avoiding damage to people and objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a safety shielding door in an embodiment of the utility model.

[0016] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0017] Figure 3 for Figure 1 A partial enlarged view of B.

[0018] Figure 4 for Figure 1 CC section view.

[0019] Figure 5 for Figure 4 A partial enlarged view of D in the middle.

[0020] Figure 6 for Figure 1 EE section view.

[0021] Among them, 10, upper track; 101, first slide groove; 102, second slide groove; 103, T-shaped slide groove; 11, damping block; 12, damping spring; 20, lower track; 31, shielding door body; 310, sliding slot; 311, first rack; 312, second rack; 32, anti-pinch block; 331, buffer spring; 332, slide rod; 333, slider; 334, connecting rod; 335, reset spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Embodiment 1:

[0024] A safety screen door for rail transit, comprising an upper track 10 and a lower track 20 (such as Figure 1 As shown, the upper track 10 is arranged parallel to the lower track 20), and the left and right shielding door assemblies are slidably arranged between the upper track 10 and the lower track 20, see Figure 1 shown.

[0025] The shielding door assembly includes a shielding door body 31, an anti-pinch block 32 and a buffer mechanism. A sliding slot 310 is provided on one side of the shielding door body 31 close to each other. The anti-pinch block 32 is slidably arranged in the sliding slot 310. The anti-pinch block 32 is connected to the corresponding sliding slot through a buffer mechanism. Specifically, the buffer mechanism includes a buffer spring 331, a slide bar 332, a slider 333, a connecting rod 334 and a reset spring 335. The middle part of the sliding slot 310 is provided with a boss structure protruding toward the anti-pinch block 32 (combined with Figure 1 and Figure 2As shown in the figure, the end surface of the boss structure is connected to the anti-pinching block 32 through evenly distributed buffer springs 331 (the number of buffer springs 331 is determined according to the actual length of the boss structure and the width of the shielding door body 31. In this embodiment, three buffer springs 31 are arranged on the same shielding door body 31); the two sides of the boss structure are connected to the inner wall of the sliding slot 310 through a sliding rod 332, and the outer wall of the sliding rod 332 is respectively slidably sleeved with a sliding block 333, and the sliding block 333 is slidably connected to the corresponding side wall of the sliding slot 310 (as shown in the figure). Figure 2 As shown, the left side surface of the left slider 333 is slidably connected to the right side wall of the corresponding sliding slot 310, and the right side surface of the right slider 333 is slidably connected to the left side wall of the corresponding sliding slot 310). The slider 333 is connected to the corresponding side surface of the anti-pinch block 32 through the connecting rod 334, and the connecting rod 334 is rotatably connected to the slider 333 and the anti-pinch block 32 through the bearing seat (as shown in FIG. Figure 2 The slider 333 is connected to the corresponding inner wall of the sliding slot 310 (ie, the upper inner wall and the lower inner wall of the sliding slot 310) through a return spring 335, and the return spring 335 is located at the outer ring of the corresponding slide rod 332 and is coaxially arranged with the corresponding slide rod 332. A rubber layer is fixedly provided on the side of the anti-pinch block 32 away from the sliding slot 310, one is to provide a buffer when clamping an object, and the other is to use the elastic deformation of the rubber to ensure the sealing of the two shielding door bodies 31 after closing; the two groups of anti-pinch blocks 32 are respectively provided with an infrared transmitter and an infrared receiver on the side of the side away from the sliding slot 310 (the infrared transmitter and the infrared receiver can both be conventional models in this field, and the models adopted and the positions and methods of setting are not the key points of this application, and are all conventional settings; at the same time, if a rubber layer is provided, a through hole that does not block the corresponding infrared transmitter and infrared receiver is provided on the rubber layer); an infrared ranging sensor is provided on the top surface of the boss structure and between the buffer springs 331 (the infrared ranging sensor can be conventional models in this field), and a reflective surface is provided on the side of the anti-pinch block 32 close to the sliding slot 310 and corresponding to the infrared ranging sensor, so as to ensure that the signal emitted by the infrared ranging sensor can be effectively reflected.

[0026] Two first racks 311 are slidably arranged in the upper track 10 corresponding to the left shielding door body 31, and two second racks 312 are slidably arranged in the upper track 10 corresponding to the right shielding door body 31. The first racks 311 and the second racks 312 are staggered (eg Figure 4As shown), the upper rail 10 is provided with a first slide groove 101 corresponding to the first rack 311, and a second slide groove 102 corresponding to the second rack 312 (that is, the two first racks 311 are respectively slidably arranged in the first slide groove 101, and the bottom surfaces of the two first racks 311 are fixedly connected to the end surface of one side of the left shielding door body 31 close to the right shielding door body 31; the two second racks 312 are respectively slidably arranged in the second slide groove 102, and the bottom surfaces of the two second racks 312 are fixedly connected to the end surface of one side of the right shielding door body 31 close to the left shielding door body 31). A T-shaped slide groove 103 is provided on the bottom surface of the upper rail 10 (located under the first slide groove 101 or the second slide groove 102) and the end surface of the lower rail 20 (that is, the longitudinal section of the T-shaped slide groove 103 is a T-shaped structure), and the protruding end of the T-shaped slide groove 103 faces the shielding door assembly (refer to Figure 6 As shown), the T-shaped slide groove 103 (end surface) of the upper track 10 is connected to the first slide groove 101 and the second slide groove 102, and the upper and lower ends of the shielding door body 31 are respectively slidably engaged in the corresponding T-shaped slide groove 103 (as shown Figure 6 shown).

[0027] The first rack 311 and the second rack 312 are controlled by a gear mechanism disposed in the upper track 10. Figure 3 and Figure 5 As shown: the gear mechanism includes a first rotating shaft, a first connecting wheel, a first transmission wheel, a second rotating shaft, a second connecting wheel and a second transmission wheel. The first rotating shaft and the second rotating shaft are arranged in parallel in the upper track 10, and the middle outer wall of the first rotating shaft is fixedly sleeved with the first connecting wheel, and the middle outer wall of the second rotating shaft is fixedly sleeved with the second connecting wheel, and the first connecting wheel is meshed with the second connecting wheel; the outer wall of the first rotating shaft corresponds to the first rack 311 and is respectively sleeved with the first transmission wheel, and they (i.e., the first transmission wheel and the corresponding first rack 311) are meshed with each other, and the outer wall of the second rotating shaft corresponds to the second rack 312 and is respectively sleeved with the second transmission wheel, and they (i.e., the second transmission wheel and the corresponding second rack 312) are meshed with each other. Combined Figure 3 and Figure 5 As shown: the first connecting wheel and the second connecting wheel have the same outer diameter, and their radius is smaller than the center distance between the first rotating shaft and the second rotating shaft; the first transmission wheel and the second transmission wheel have the same outer diameter, and their outer diameter is larger than the outer diameter of the connecting wheel (i.e., the first connecting wheel or the second connecting wheel).

[0028] Damping mechanisms are respectively arranged at the left and right ends of the first slide groove 101 and the second slide groove 102; the damping mechanism comprises a damping block 11 and a damping spring 12, the damping block 11 is slidably arranged in the corresponding slide groove (i.e., the first slide groove 101 or the second slide groove 102), and the side of the damping block 11 away from the corresponding rack (i.e., the first rack 311 or the second rack 312) is connected to the side wall of the corresponding slide groove (i.e., the first slide groove 101 or the second slide groove 102) through the damping spring 12 (such as Figure 1 , Figure 4shown).

[0029] Working principle:

[0030] When in use, the first rotating shaft or the second rotating shaft is driven to rotate by the driving mechanism, so that the two first transmission wheels and the two second transmission wheels are driven to rotate simultaneously and in opposite directions through the meshing between the first connecting wheel and the second connecting wheel, and the first transmission wheel and the second transmission wheel drive the left and right shielding door assemblies to slide toward or in opposite directions between the upper track 10 and the lower track 20 through the first rack 311 and the second rack 312 respectively; when the two shielding door assemblies are in a state of being about to be closed, the end of the first rack 311 away from the corresponding shielding door assembly and the end of the second rack 312 away from the corresponding shielding door assembly are respectively released from the corresponding damping block 11, and the corresponding damping block 11 is pushed to slide in the corresponding slide groove (i.e., the first slide groove 101 or the second slide groove 102), and the corresponding damping spring 12 is compressed, and the first rack 311 and the second rack 312 are buffered by the elastic force of the damping spring 12, thereby avoiding the first rack 311 and the second rack 312 from being pinched due to inertia when a sudden obstacle occurs and the driving mechanism reverses. At the same time, during the closing process of the shielding door body 31, the anti-pinch block 32 is buffered by the soft connection of the buffer spring 331 compressed and the hard connection of the return spring 335 caused by the rotation of the connecting rod 334 and the sliding of the slider 333 on the slide rod 332, thereby avoiding damage to items or injury to people. In addition, through the cooperation of the infrared generator and the infrared receiver (that is, when there is an object between the shielding door body 31, the infrared receiver cannot receive the signal of the infrared generator), the corresponding driving mechanism is started to reverse, and the distance threshold tested by the infrared ranging sensor is avoided to avoid the situation where the infrared generator and the infrared receiver fail to detect and cause pinching (that is, the obstacle is located between two groups of adjacent infrared generators), thereby achieving high-precision and high-sensitivity anti-pinch.

[0031] Embodiment 2:

[0032] As a further optimization of the scheme of the utility model, on the basis of the scheme of Example 1, in order to ensure the smooth sliding of the shielding door body 31, limiting slide grooves are symmetrically arranged on the end face of the lower track 20 and located on the outside of the T-shaped slide groove 103, and rollers are evenly arranged on the bottom of the shielding door body 31 on the left and right sides respectively corresponding to the limiting slide grooves, and the rollers are rotatably connected to the shielding door body 31 and the rollers are rollingly engaged in the limiting slide grooves.

[0033] Embodiment 3:

[0034] As a further optimization of the solution of the utility model, on the basis of the solution of Example 1, the sliding part and the connecting part of the shielding door body 31 are both made of metal material or alloy material, and the middle main body part is made of tempered glass.

Claims

1. A safety screen door for rail transit, characterized in that: It comprises an upper track and a lower track, and two left and right shielding door assemblies are slidably arranged between the upper track and the lower track; the shielding door assembly comprises a shielding door body, an anti-pinch block and a buffer mechanism, a sliding slot is arranged on the side of the shielding door bodies close to each other, an anti-pinch block is slidably arranged in the sliding slot, and the anti-pinch block is connected to the corresponding sliding slot through a buffer mechanism; two first racks are slidably arranged in the upper track corresponding to the left shielding door body, and two second racks are slidably arranged in the upper track corresponding to the right shielding door body, the first racks and the second racks are staggered, a first slide groove is arranged in the upper track corresponding to the first rack, and a second slide groove is arranged corresponding to the second rack, and damping mechanisms are respectively arranged at the left and right ends of the first slide groove and the second slide groove.

2. A rail transit safety screen door according to claim 1, characterized in that: The bottom surface of the upper track and the end surface of the lower track are provided with T-shaped slide grooves, and the protruding ends of the T-shaped slide grooves face the shielding door assembly. The T-shaped slide grooves of the upper track are connected with the first slide groove and the second slide groove, and the upper and lower ends of the shielding door body are respectively slidably engaged in the corresponding T-shaped slide grooves.

3. A rail transit safety screen door according to claim 1, characterized in that: A rubber layer is fixedly arranged on a side surface of the anti-pinching block away from the sliding slot.

4. The rail transit safety screen door according to claim 1, characterized in that: The buffer mechanism includes a buffer spring, a sliding rod, a slider, a connecting rod and a return spring. The middle part of the sliding slot is arranged as a boss structure protruding toward the anti-pinch block, and the end face of the boss structure is connected to the anti-pinch block through evenly distributed buffer springs; the two sides of the boss structure are connected to the inner wall of the sliding slot through sliding rods respectively, the outer walls of the sliding rods are slidably sleeved on the sliders respectively, and the sliders are slidably connected to the corresponding side walls of the sliding slot, the sliders are connected to the corresponding side faces of the anti-pinch block through connecting rods, and the connecting rods are rotationally connected to the slider and the anti-pinch block respectively; the slider is connected to the corresponding inner wall of the sliding slot through a return spring, and the return spring is located on the outer ring of the corresponding sliding rod and is coaxially arranged with the corresponding sliding rod.

5. The rail transit safety screen door according to claim 1, characterized in that: The first rack and the second rack are controlled by a gear mechanism arranged in the upper track, and the gear mechanism includes a first rotating shaft, a first connecting wheel, a first transmission wheel, a second rotating shaft, a second connecting wheel and a second transmission wheel. The first rotating shaft and the second rotating shaft are arranged in parallel in the upper track, and the middle outer wall of the first rotating shaft is fixedly sleeved with the first connecting wheel, and the middle outer wall of the second rotating shaft is fixedly sleeved with the second connecting wheel, and the first connecting wheel is meshed with the second connecting wheel; the outer wall of the first rotating shaft corresponds to the first rack and is respectively sleeved with the first transmission wheel and they are meshed with each other, and the outer wall of the second rotating shaft corresponds to the second rack and is respectively sleeved with the second transmission wheel and they are meshed with each other.

6. A rail transit safety screen door according to claim 5, characterized in that: The first connecting wheel and the second connecting wheel have the same outer diameter, and their radius is smaller than the center distance between the first rotating shaft and the second rotating shaft; the first transmission wheel and the second transmission wheel have the same outer diameter, and their outer diameter is larger than the outer diameter of the connecting wheel.

7. The rail transit safety screen door according to claim 1, characterized in that: The damping mechanism comprises a damping block and a damping spring. The damping block is slidably arranged in the corresponding sliding groove. The side of the damping block away from the corresponding rack is connected to the side wall of the corresponding sliding groove through the damping spring.

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