Self-speed-limiting mechanism and emergency escape system

Abstract

The utility model discloses a self-speed-limiting mechanism and an emergency escape system.The self-speed-limiting mechanism is used for an emergency escape device and comprises a gear system and a speed limiting disc, the gear system at least comprises a roller and a first gear, and the first gear and the roller are coaxially arranged and rotationally connected; wherein the rolling wheel is connected with a handrail rail of the emergency escape device in a matched mode, and the rolling wheel is configured to be capable of driving the first gear to rotate; the speed limiting disc is rotationally connected with the first gear; wherein the rolling wheel is configured to be capable of driving the speed limiting disc to rotate, and on the basis that the rolling wheel drives the first gear to rotate, the rotating speed of the speed limiting disc is larger than that of the first gear. At least one gear of the self-speed-limiting mechanism is matched with the rolling wheel and the like, so that the speed can be effectively controlled in the connecting and running process of the rolling wheel and the handrail track, and the running safety and stability of the device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of emergency devices, and in particular to a self-speed limiting mechanism and an emergency escape system. Background Art

[0002] To address fire safety concerns in my country's urban high-rise buildings and address the shortcomings of self-rescue and escape facilities in these buildings, emergency escape devices are being developed to enable rapid escape. However, the speed control of the self-limiting mechanism in the emergency escape system is unstable, impacting the safety of the system. Utility Model Content

[0003] In view of this, the present application provides a self-speed limiting mechanism and an emergency escape system to solve the problem in the prior art that the speed control of the self-speed limiting mechanism of the emergency escape system is unstable, thereby affecting the safety of the emergency escape system.

[0004] In order to solve the above technical problems, the first technical solution provided by this application is to provide a self-speed limiting mechanism for an emergency escape device, comprising:

[0005] A gear system comprising at least a roller and a first gear coaxially arranged with the roller and rotatably connected thereto; wherein the roller is matingly connected to the handrail track of the emergency escape device, and the roller is configured to drive the first gear to rotate;

[0006] A speed limiting disc is rotationally connected to the first gear; wherein the roller is configured to drive the speed limiting disc to rotate, and based on the roller driving the first gear to rotate, the rotation speed of the speed limiting disc is greater than the rotation speed of the first gear.

[0007] In one embodiment, the speed limiting disc includes:

[0008] a first rotating wheel, rotatably connected to the first gear;

[0009] The second rotating wheel is coaxially arranged and fixedly connected to the first rotating wheel, and the second rotating wheel rotates synchronously with the first rotating wheel; wherein the size of the second rotating wheel is larger than that of the first rotating wheel.

[0010] In one embodiment, the second rotating wheel comprises:

[0011] The limiting gear comprises a plurality of limiting teeth, wherein limiting grooves are formed between adjacent limiting teeth;

[0012] a plurality of first impact columns, each of which is disposed in one of the limiting grooves;

[0013] A buffer column is arranged around the periphery of the plurality of limiting teeth, and the buffer column is configured to limit the first impact column.

[0014] In one embodiment, the buffer column is an annular buffer column; or

[0015] The buffer column includes a plurality of second impact columns, and the plurality of second impact columns are arranged around the periphery of the plurality of limiting teeth and limit the first impact column.

[0016] In one embodiment, the speed limiting disc further comprises:

[0017] The cover body comprises a main body and an extension portion extending along the main body toward one side of the limiting gear, wherein the extension portion covers a side surface of the buffer column.

[0018] In one embodiment, the gear system further comprises:

[0019] a transmission gear, rotatably connected to the first gear; wherein the speed limiting plate is rotatably connected to the transmission gear;

[0020] a second gear disposed between the first gear and the transmission gear and arranged parallel to the first gear and the transmission gear; the second gear is configured to rotate with the rotation of the first gear and drive the transmission gear to rotate;

[0021] When the roller rotates, it drives the first gear, the second gear, the transmission gear and the speed limiting disc to rotate in sequence.

[0022] In one embodiment, the transmission gear comprises:

[0023] a first sub-gear, meshing with the first gear;

[0024] The second sub-gear is coaxially arranged and fixedly connected to the first sub-gear, and the second sub-gear rotates synchronously with the first sub-gear; wherein the size of the second sub-gear is larger than that of the first gear; and the second sub-gear is meshed with the first rotating wheel.

[0025] In one embodiment, the self-speed limiting mechanism further comprises: a mounting plate arranged along a first direction; wherein the first direction is the mounting direction of the emergency escape device; the mounting plate has:

[0026] a first mounting hole, wherein the roller and the first gear are mounted on opposite sides of the first mounting hole along a second direction via a first rotating shaft; wherein the second direction is arranged to intersect with the first direction;

[0027] a first mounting slot, wherein the second gear is mounted on one side of the mounting plate through the first mounting slot;

[0028] a second mounting slot, wherein the transmission gear is mounted on one side of the mounting plate through the second mounting slot; the second gear and the transmission gear are mounted on the same side of the mounting plate;

[0029] a second mounting hole, wherein the second sub-gear and the first sub-gear are mounted on opposite sides of the second mounting hole along the second direction;

[0030] Wherein, the first mounting hole, the first mounting groove, the second mounting groove and the second mounting hole are sequentially arranged along the first direction.

[0031] In one embodiment, the roller comprises:

[0032] A first end portion and a second end portion are arranged opposite to each other, and a contact portion is arranged between the first end portion and the second end portion, wherein the contact portion is in contact with and connected to the handrail track; the first end portion and the second end portion are respectively arranged on opposite sides of the handrail track in the width direction to limit the connection position of the contact portion and the handrail track; wherein the dimensions of the first end portion and the second end portion are both larger than the dimensions of the contact portion.

[0033] In order to solve the above technical problems, the second technical solution provided by this application is to provide an emergency escape system, comprising:

[0034] An emergency escape device, comprising a self-limiting speed mechanism, wherein the self-limiting speed mechanism is any of the self-limiting speed mechanisms described above;

[0035] The handrail track is matched and connected with the self-speed limiting mechanism.

[0036] Beneficial effects of the present application: Different from the prior art, the self-speed limiting mechanism of the present application is used for an emergency escape device, including a gear system and a speed limiting disk, wherein the gear system includes at least a roller and a first gear coaxially arranged with the roller and rotatably connected; wherein the roller is matched and connected with the handrail track of the emergency escape device, and the roller is configured to drive the first gear to rotate; the speed limiting disk is rotatably connected with the first gear; wherein the roller is configured to drive the speed limiting disk to rotate, and on the basis of the roller driving the first gear to rotate, the rotation speed of the speed limiting disk is greater than the rotation speed of the first gear. By cooperating with at least one gear and roller of the self-speed limiting mechanism, the speed of the roller during the operation of the handrail track can be effectively controlled, thereby improving the safety and stability of the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a schematic diagram of the overall installation structure of the emergency escape system provided in this application;

[0039] Figure 2 It is a schematic diagram of the cross-sectional structure of the handrail track provided in this application;

[0040] Figure 3 This is a structural diagram of the self-speed limiting mechanism provided in the first embodiment of the present application;

[0041] Figure 4 This is a structural diagram of the self-speed limiting mechanism provided in the second embodiment of the present application;

[0042] Figure 5 This is a structural diagram of the self-speed limiting mechanism provided by the present application from one perspective;

[0043] Figure 6 This is a structural diagram of the self-speed limiting mechanism provided by the present application from another perspective;

[0044] Figure 7 It is a structural schematic diagram of the mounting plate provided in this application.

[0045] Description of reference numerals:

[0046] 100. Emergency escape system; 1. Handrail; 2. Emergency escape device; 10. First main body; 101. First bend; 102. First protrusion; 1021. First groove; 1022. Second groove; 103. Third bend; 104. Second protrusion; 1041. Third groove; 105. Second bend; 106. Groove structure; 11. Second main body; 12. Third main body; 121. Top wall; 13. Cavity; 3. Gear system; 30. Roller; 301. First end; 302. Second end; 303. Contact portion; 31. First gear; 312. Bearing; 313. First rotating shaft; 32. Second gear; 33. Transmission gear; 331. First sub-gear; 332. Second sub-gear; 34. Speed limiting plate; 341. First rotating wheel; 3410. Limiting gear; 3411. Limiting tooth; 3412. Limiting groove; 3413. First impact column; 340. Buffer column; 3401. Annular buffer column; 3402. Second impact column; 342. Second rotating wheel; 35. Mounting plate; 351. First mounting hole; 352. First mounting groove; 353. Second mounting groove; 354. Second mounting hole; 355. Assembly hole; 36. Cover; 361. Main body; 362. Extension; 4. Self-speed limiting mechanism. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] The terms "first" and "second" in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of the various components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0049] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

[0050] The present application provides an emergency escape system and a self-speed limiting mechanism for an emergency escape device.

[0051] See also Figures 1 to 2 , Figure 1 This is a schematic diagram of the overall installation structure of the emergency escape system provided in this application; Figure 2 It is a schematic diagram of the cross-sectional structure of the handrail track provided in this application.

[0052] An emergency escape system 100 provided in one embodiment of the present application may include an emergency escape device 2 and a handrail track 1. The emergency escape device 2 includes a self-speed limiting mechanism 4, which is any one of the following self-speed limiting mechanisms 4; the handrail track 1 is matched and connected to the self-speed limiting mechanism 4.

[0053] The self-speed limiting mechanism 4 provided in one embodiment of the present application is connected to the handrail track 1 for emergency escape.

[0054] In one embodiment, the handrail track 1 may include a first main body portion 10, a second main body portion 11 and a third main body portion 12 connected in sequence, and the first main body portion 10, the second main body portion 11 and the third main body portion 12 cooperate to form a semi-enclosed cavity 13; the cavity 13 accommodates the roller 30 of the emergency escape device 2 so that it can be connected to the third main body portion 12.

[0055] In one embodiment, the roller 30 includes a first end 301 and a second end 302 disposed opposite each other, and a contact portion 303 disposed between the first end 301 and the second end 302. The contact portion 303 is in contact with the handrail track 1. The first end 301 and the second end 302 are disposed on opposite sides of the handrail track 1 in the width direction to limit the connection position of the contact portion 303 with the handrail track 1.

[0056] Specifically, the contact portion 303 contacts the top wall 121 of the handrail track 1, and the first end portion 301 and the second end portion 302 are respectively clamped at opposite ends of the top surface to limit the roller 30 in the width direction of the handrail track 1 and prevent the roller 30 from falling off the handrail track 1. In this embodiment, the contact surface between the contact portion 303 and the top wall 121 of the handrail track 1 is coated with a rubber or polymer material (such as polyurethane) with a high friction coefficient and strong wear resistance, thereby increasing the friction of the contact surface and improving durability. It will be understood that in order for the first end portion 301 and the second end portion 302 to limit the contact portion 303, the dimensions of the first end portion 301 and the second end portion 302 should be set to be larger than the dimensions of the contact portion 303. The specific dimensions can be set as needed and are not limited in this application.

[0057] like Figure 2 As shown, in one embodiment, a first bend 101 is provided between the first and second body portions 10, 11, and a second bend 105 is provided between the second and third body portions 11, 12. The first bend 101 has a third bend 103 at one end away from the second body portion 11. The third bend 103 can enhance the gripping feel of the handrail, and the width of the handrail grip can be set to 65 mm to 75 mm. A groove structure 106 is formed on the inner sidewall of the third bend 103 between the second and third body portions 11, 12. The groove structure 106 provides space for the installation and operation of the roller 30 of the emergency escape device 2, allowing the emergency escape device 2 to be connected to the third body portion 12. Specifically, the first end 301 is engaged with the groove structure 106, the contact portion 303 contacts the top wall 121 of the handrail track 1, and the second end 302 is engaged with the outer wall / outer edge of the third body portion 12, thereby ensuring a stable connection between the emergency escape device 2 and the handrail track 1.

[0058] In one embodiment, the inner side wall of the first main body portion 10 has a first protrusion 102, and the first protrusion 102 extends toward the cavity 13; the opposite side walls of the first protrusion 102 and the side walls of the first main body portion 10 form a first groove 1021 and a second groove 1022 relative to each other. The design of the first groove 1021 and the second groove 1022 can, on the one hand, reduce the weight of the overall structure of the handrail rail 1, and on the other hand, there is a gap between the surface of the first protrusion 102 close to the load-bearing frame 14 and the bracket of the load-bearing frame 14. The gap can reserve space for the punching position when the handrail rail 1 is connected to the load-bearing frame 14.

[0059] See also Figures 3 to 7 , Figure 3 This is a structural diagram of the self-speed limiting mechanism provided in the first embodiment of the present application; Figure 4 This is a structural diagram of the self-speed limiting mechanism provided in the second embodiment of the present application; Figure 5This is a structural diagram of the self-speed limiting mechanism provided by the present application from one perspective; Figure 6 This is a structural diagram of the self-speed limiting mechanism provided by the present application from another perspective; Figure 7 It is a structural schematic diagram of the mounting plate provided in this application.

[0060] like Figures 3 and 4 As shown, the self-speed limiting mechanism 4 provided in the present application may include: a gear system 3 and a speed limiting disk 34, wherein the gear system 3 includes at least a roller 30 and a first gear 31 coaxially arranged with the roller 30 and rotatably connected; wherein the roller 30 is matched and connected with the handrail track 1 of the emergency escape device 2, and the roller 30 is configured to drive the first gear 31 to rotate; and the speed limiting disk 34 is rotatably connected with the first gear 31. wherein the roller 30 is configured to drive the speed limiting disk 34 to rotate, and on the basis of the roller 30 driving the first gear 31 to rotate, the rotation speed of the speed limiting disk 34 is greater than the rotation speed of the first gear 31, thereby increasing the speed of the speed limiting disk 34.

[0061] In one embodiment, if Figures 5 and 6 As shown, the self-speed limiting mechanism may include: a roller 30 , a first gear 31 , a transmission gear 33 and a speed limiting disc 34 , and the roller 30 is matched and connected to the handrail track 1 .

[0062] Specifically, the first gear 31 is coaxially arranged with the roller 30, and the first gear 31 and the roller 30 are spaced apart by a bearing 312 and connected to each other by a spline. The first gear 31 rotates with the rotation of the roller 30. The transmission gear 33 is rotationally connected to the first gear 31, specifically by meshing with their respective gears. The speed limiter 34 is rotationally connected to the transmission gear 33, specifically by meshing with their respective gears. When the roller 30 rotates, it drives the first gear 31, the transmission gear 33, and the speed limiter 34 to rotate in sequence.

[0063] In one embodiment, the roller 30 includes a first end 301 and a second end 302 disposed opposite each other, and a contact portion 303 disposed between the first end 301 and the second end 302. The contact portion 303 is in contact with the handrail track 1. The first end 301 and the second end 302 are disposed on opposite sides of the handrail track 1 in the width direction to limit the connection position of the contact portion 303 with the handrail track 1.

[0064] Specifically, the contact portion 303 contacts the top wall 121 of the handrail track 1, and the first end 301 and the second end 302 are respectively engaged at opposite ends of the top surface, thereby restraining the roller 30 in the second direction (the width of the handrail track 1, which is also the direction of use of the emergency escape device 2), preventing the roller 30 from falling off the handrail track 1. It is understood that in order for the first end 301 and the second end 302 to restrain the contact portion 303, the dimensions of the first end 301 and the second end 302 should be larger than those of the contact portion 303. The specific dimensions can be set as needed and are not limited in this application.

[0065] In one embodiment, the gear system 3 further includes a transmission gear 33 and a second gear 32, wherein the transmission gear 33 is rotationally connected to the first gear 31; wherein the speed limiting plate 34 is rotationally connected to the transmission gear 33; the second gear 32 is arranged between the first gear 31 and the transmission gear 33, and is arranged parallel to the first gear 31 and the transmission gear 33; the second gear 32 is configured to rotate with the rotation of the first gear 31, and drive the transmission gear 33 to rotate; wherein, when the roller 30 rotates, it drives the first gear 31, the second gear 32, the transmission gear 33 and the speed limiting plate 34 to rotate in sequence.

[0066] In one embodiment, the transmission gear 33 includes a first sub-gear 331 and a second sub-gear 332. The first sub-gear 331 meshes with the first gear 31. The second sub-gear 332 is coaxially arranged and fixedly connected to the first sub-gear 331, thereby rotating synchronously with the first sub-gear 331. The second sub-gear 332 is larger than the first gear 31 and meshes with the first rotating wheel. This creates a stepped gear set with the first sub-gear 331 and the second sub-gear 332. The process of the first gear 31 driving the transmission gear 33 to rotate forms a first gear increase.

[0067] In one specific embodiment, the second gear 32 is disposed between the first gear 31 and the first sub-gear 331 and is arranged parallel to the first gear 31 and the first sub-gear 331 along the first direction. The second gear 32 is configured to rotate with the rotation of the first gear 31, thereby driving the first sub-gear 331 to rotate. In other words, the first gear 31 drives the second gear 32 to rotate, and the second gear 32 in turn drives the first sub-gear 331 to rotate. The process of the second gear 32 driving the first sub-gear 331 to rotate creates a second gear speed increase, thereby gradually increasing the speed of rotation from the roller 30 to the first sub-gear 331.

[0068] In one embodiment, if Figure 7As shown, the self-speed limiting mechanism 4 may further include: a mounting plate 35 arranged in sequence along a first direction; wherein the first direction is the installation direction of the emergency escape device 2; the mounting plate 35 is provided with: a first mounting hole 351, a first mounting slot 352, a second mounting slot 353, and a second mounting hole 354, wherein the first mounting hole 351, the first mounting slot 352, the second mounting slot 353, and the second mounting hole 354 are arranged in sequence along the first direction. The roller 30 and the first gear 31 are mounted on opposite sides of the first mounting hole 351 via the first rotating shaft 313 along a second direction; wherein the second direction is arranged intersectingly with the first direction, preferably perpendicularly. The second gear 32 is mounted on one side of the mounting plate 35 via the first mounting slot 352; the transmission gear 33 is mounted on one side of the mounting plate 35 via the second mounting slot 353; the second gear 32 and the transmission gear 33 are mounted on the same side of the mounting plate 35; and the second sub-gear 332 and the first sub-gear 331 are mounted on opposite sides of the second mounting hole 354 along the second direction. That is, the first mounting hole 351 and the second mounting hole 354 are through holes; the first mounting groove 352 and the second mounting groove 353 are blind holes that do not penetrate the mounting plate 35 .

[0069] In addition, a plurality of assembly holes 355 may be provided on the mounting plate 35. The assembly holes 355 may be used to fix the above-mentioned roller 30, the first gear 31, the second gear 32, the transmission gear 33 and the speed limit plate 34, etc., and may also be used to fix the fixing plate to the outer shell. The specific assembly and use shall be carried out according to the needs, and this application does not impose any restrictions on this.

[0070] In one embodiment, the speed limiting disc 34 includes: a first rotating wheel 341 and a second rotating wheel 342, wherein the first rotating wheel 341 is rotationally connected to the first gear 31; the second rotating wheel 342 is coaxially arranged and fixedly connected to the first rotating wheel 341, and the second rotating wheel 342 rotates synchronously with the first rotating wheel 341; wherein the size of the second rotating wheel 342 is larger than that of the first rotating wheel 341.

[0071] In one embodiment, the speed limiting disc 34 includes a first rotating wheel 341 and a second rotating wheel 342. The first rotating wheel 341 is rotatably connected to the first gear 31 and is specifically meshed with the second sub-gear 332. The second rotating wheel 342 is coaxially arranged with the first rotating wheel 341 and is fixedly connected through the second mounting slot 353. The second rotating wheel 342 rotates synchronously with the first rotating wheel 341. Preferably, the second rotating wheel 342 and the first rotating wheel 341 are fixed to opposite sides of the mounting plate 35 via the same rotating shaft. The second rotating wheel 342 is larger than the first rotating wheel 341.

[0072] In one embodiment, the second rotating wheel 342 includes a limiting gear 3410, a first impact post 3413, and a buffer post 340. The limiting gear 3410 includes a plurality of limiting teeth 3411, with a plurality of limiting slots 3412 formed between adjacent limiting teeth 3411. Each first impact post 3413 is disposed within a limiting slot 3412. The buffer post 340 is disposed around the periphery of the plurality of limiting teeth 3411 and is configured to limit the first impact posts 3413. In other words, each limiting slot 3412 is provided with a first impact post 3413.

[0073] In one embodiment, the buffer column 340 is an annular buffer column 3401 surrounding the periphery of the plurality of limiting teeth 3411 .

[0074] Alternatively, in another embodiment, the buffer column 340 includes a plurality of second impact columns 3402 , which are arranged around the periphery of the plurality of limiting teeth 3411 and are configured to limit the first impact column 3413 .

[0075] Furthermore, the movable teeth of the first rotating wheel 341 drive the second rotating wheel 342 to rotate rapidly, generating a strong centrifugal force. During rotation, the first impact column 3413 in the limiting groove 3412 will be thrown out of the limiting groove 3412, and intermittently impact and rotate with the annular buffer column 3401 or the second impact column 3402 set on the periphery of the limiting tooth 3411. At the moment of impact, the first impact column 3413 will be knocked back into the limiting groove 3412, thereby generating friction and impact damping, further limiting the rotation speed of the movable teeth of the first rotating wheel 341, that is, decelerating. The deceleration is sequentially passed through the first rotating wheel 341, the transmission gear 33, the second gear 32, and the first gear 31, and further reacts to the roller 30, thereby causing the roller 30 to slow down and roll at a constant speed. Through the above-mentioned gear speed increase and friction and impact deceleration process, the speed of the roller 30 can be controlled within a certain range, so that the roller 30 can accelerate while sliding along the handrail track 1, but the speed will not be too fast. When a certain speed is reached, the speed of the roller 30 is controlled by the reaction force generated by the impact damping of the first impact column 3413 and the annular buffer column 3401 or the second impact column 3402, thereby ensuring the stable and safe operation of the roller 30 and improving the safety of the emergency escape device 2.

[0076] In one embodiment, the speed limiter 34 further includes a cover 36, which is disposed on a side of the speed limiter 34 away from the mounting plate 35. The cover 36 includes a main body 361 disposed on a side away from the speed limiter 34 and an extension 362 extending from the main body 361 toward the cover. The extension 362 covers the side of the annular buffer column 3401 or the plurality of second impact columns 3402, thereby protecting the annular buffer column 3401 or the plurality of second impact columns 3402 from being ejected from the device, thereby ensuring safe operation of the device.

[0077] The self-speed limiting mechanism 4 disclosed in the present application is used for an emergency escape device 2, and includes a gear system 3 and a speed limiting disk 34. The gear system 3 includes at least a roller 30 and a first gear 31 coaxially arranged with the roller 30 and rotatably connected. The roller 30 is matched and connected to the handrail track 1 of the emergency escape device 2, and the roller 30 is configured to drive the first gear 31 to rotate. The speed limiting disk 34 is rotatably connected to the first gear 31. The roller 30 is configured to drive the speed limiting disk 34 to rotate, and on the basis of the roller 30 driving the first gear 31 to rotate, the rotation speed of the speed limiting disk 34 is greater than the rotation speed of the first gear 31. By cooperating with at least one gear of the self-speed limiting mechanism 4 and the roller 30, the speed of the roller 30 during the operation of the handrail track 1 can be effectively controlled, thereby improving the safety and stability of the operation of the device.

[0078] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A self-speed limiting mechanism for an emergency escape device, characterized in that: include: A gear system comprising at least a roller and a first gear coaxially arranged with the roller and rotatably connected thereto; wherein the roller is matingly connected to the handrail track of the emergency escape device, and the roller is configured to drive the first gear to rotate; A speed limiting disc is rotationally connected to the first gear; wherein the roller is configured to drive the speed limiting disc to rotate, and based on the roller driving the first gear to rotate, the rotation speed of the speed limiting disc is greater than the rotation speed of the first gear.

2. The self-speed limiting mechanism according to claim 1, characterized in that: The speed limiting disk includes: a first rotating wheel, rotatably connected to the first gear; The second rotating wheel is coaxially arranged and fixedly connected to the first rotating wheel, and the second rotating wheel rotates synchronously with the first rotating wheel; wherein the size of the second rotating wheel is larger than that of the first rotating wheel.

3. The self-speed limiting mechanism according to claim 2, characterized in that: The second rotating wheel comprises: The limiting gear comprises a plurality of limiting teeth, wherein limiting grooves are formed between adjacent limiting teeth; a plurality of first impact columns, each of which is disposed in one of the limiting grooves; A buffer column is arranged around the periphery of the plurality of limiting teeth, and the buffer column is configured to limit the first impact column.

4. The self-speed limiting mechanism according to claim 3, characterized in that: The buffer column is an annular buffer column; or The buffer column includes a plurality of second impact columns, and the plurality of second impact columns are arranged around the periphery of the plurality of limiting teeth and limit the first impact column.

5. The self-speed limiting mechanism according to claim 3, characterized in that: The speed limiting disk further comprises: The cover body comprises a main body and an extension portion extending along the main body toward one side of the limiting gear, wherein the extension portion covers a side surface of the buffer column.

6. The self-speed limiting mechanism according to any one of claims 1 to 5, characterized in that: The gear system further comprises: a transmission gear, rotatably connected to the first gear; wherein the speed limiting plate is rotatably connected to the transmission gear; a second gear disposed between the first gear and the transmission gear and arranged parallel to the first gear and the transmission gear; the second gear is configured to rotate with the rotation of the first gear and drive the transmission gear to rotate; When the roller rotates, it drives the first gear, the second gear, the transmission gear and the speed limiting disc to rotate in sequence.

7. The self-speed limiting mechanism according to claim 6, characterized in that: The transmission gear comprises: a first sub-gear, meshing with the first gear; The second sub-gear is coaxially arranged and fixedly connected to the first sub-gear, and the second sub-gear rotates synchronously with the first sub-gear; wherein the size of the second sub-gear is larger than that of the first gear; and the second sub-gear is engaged with the first rotating wheel of the speed limiting disk.

8. The self-speed limiting mechanism according to claim 7, characterized in that: Also includes: A mounting plate arranged along a first direction; wherein the first direction is the mounting direction of the emergency escape device; the mounting plate has: a first mounting hole, wherein the roller and the first gear are mounted on opposite sides of the first mounting hole along a second direction via a first rotating shaft; wherein the second direction is arranged to intersect with the first direction; a first mounting slot, wherein the second gear is mounted on one side of the mounting plate through the first mounting slot; a second mounting slot, wherein the transmission gear is mounted on one side of the mounting plate through the second mounting slot; the second gear and the transmission gear are mounted on the same side of the mounting plate; a second mounting hole, wherein the second sub-gear and the first sub-gear are mounted on opposite sides of the second mounting hole along the second direction; Wherein, the first mounting hole, the first mounting groove, the second mounting groove and the second mounting hole are sequentially arranged along the first direction.

9. The self-speed limiting mechanism according to claim 1, characterized in that: The roller comprises: A first end portion and a second end portion are arranged opposite to each other, and a contact portion is arranged between the first end portion and the second end portion, wherein the contact portion is in contact with and connected to the handrail track; the first end portion and the second end portion are respectively arranged on opposite sides of the handrail track in the width direction to limit the connection position of the contact portion and the handrail track; wherein the dimensions of the first end portion and the second end portion are both larger than the dimensions of the contact portion.

10. An emergency escape system, characterized in that: include: An emergency escape device, comprising a self-limiting speed mechanism, wherein the self-limiting speed mechanism is the self-limiting speed mechanism according to any one of claims 1 to 9; The handrail track is matched and connected with the self-speed limiting mechanism.

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