阅读说明：本技术 一种高楼应急逃生器 (High-rise emergency escape device ) 是由 周维国 于 2021-08-18 设计创作，主要内容包括：本发明提供了一种高楼应急逃生器,可配合专用扶手轨道逃生,包括：与轨道配合的两滚轮,滚轮通过滚轮轴安装于左支架或右支架上,左滚轮与左支架间设有两级齿轮调速装置,其包括传动配合的一级增速齿轮组和行星齿轮调速机构,前者包括与左滚轮一体连接的主动齿轮及传动齿轮,后者包括多个行星齿轮及相啮合的太阳齿轮和内齿圈,行星架与传动齿轮固定连接,行星齿轮安装于行星架上,太阳齿轮外侧套有卡瓦齿轮,卡瓦齿轮一侧设有卡瓦摆件,左、右支架与吊轴转动连接,刹车机构与吊轴转动连接。本发明由两级齿轮调速装置,对滚轮先增速,再调节到匀速状态,在速度过快时,可由刹车机构与扶手轨道底部摩擦,主动减速,更加安全可靠。(The invention provides a high-rise emergency escape device which can be matched with a special handrail track for escape, and comprises: the track-matched two rollers are installed on the left support or the right support through roller shafts, a two-stage gear speed adjusting device is arranged between the left roller and the left support and comprises a first-stage speed increasing gear set and a planetary gear speed adjusting mechanism which are matched in a transmission mode, the first-stage speed increasing gear set comprises a driving gear and a transmission gear which are integrally connected with the left roller, the second-stage speed adjusting device comprises a plurality of planetary gears, a sun gear and an inner gear ring which are meshed with each other, the planet carrier is fixedly connected with the transmission gear, the planetary gears are installed on the planet carrier, a slip gear is sleeved on the outer side of the sun gear, a slip swing part is arranged on one side of the slip gear, the left support and the right support are rotatably connected with a hanging shaft, and a brake mechanism is rotatably connected with the hanging shaft. The two-stage gear speed regulating device is used for firstly increasing the speed of the roller and then regulating the roller to be in a constant speed state, and when the speed is too high, the roller can be actively decelerated by the friction between the brake mechanism and the bottom of the handrail track, so that the handrail track is safer and more reliable.)

1. The utility model provides a high building emergency escape device, can cooperate the special handrail track of installing in the stairwell to use, its characterized in that includes:

the roller group comprises a left roller and a right roller and is used for matching with the special handrail track to roll along the special handrail track;

the mounting bracket comprises a left bracket and a right bracket, roller shafts are respectively mounted on the left bracket and the right bracket, the left roller and the roller shafts are mounted on the left bracket in a matched manner through bearings, and the right roller and the roller shafts are mounted on the right bracket in a matched manner through bearings;

the lifting shaft is rotatably connected with the left support and the right support, and a lifting hook is hung at the bottom of the lifting shaft and used for lifting a seat or a hanging strip which can be taken by an escaper;

the two-stage gear speed regulating device comprises a primary speed increasing gear set and a planetary gear speed regulating mechanism, the primary speed increasing gear set is in matched transmission with the left roller or the right roller and is used for increasing the speed of the roller train, and the planetary gear speed regulating mechanism is in matched transmission with the primary speed increasing gear set and is used for regulating the rotating speed of the roller train to enable the roller train to rotate at a constant speed and descend;

the brake mechanism comprises a brake rod and a brake head, wherein the brake head is arranged at the top of the brake rod and used for reducing speed by friction with the bottom of the special handrail track, and the middle of the brake rod is rotatably connected with the hanging shaft.

2. The emergency escape device for high-rise buildings according to claim 1, wherein the primary speed-increasing gear set comprises a driving gear and a transmission gear which are meshed with each other, the driving gear is integrally connected with the end surface of the left roller or the end surface of the right roller and can rotate along with the driving gear, and the transmission gear is rotatably mounted on the left bracket or the right bracket through a gear shaft.

3. The high-rise emergency escape device according to claim 2, wherein the planetary gear speed adjusting mechanism comprises a planet carrier, planetary gears, a sun gear, an inner gear ring and a slip pendulum assembly, the planetary gears are respectively mounted on the planet carrier through a supporting shaft, the centers of the planetary gears are located on the same circumference, the sun gear is located inside each planetary gear and is in mesh transmission with each planetary gear simultaneously, the sun gear is mounted on the gear shaft, the inner gear ring is arranged coaxially with the sun gear, each planetary gear is uniformly distributed between the inner gear ring and the sun gear, each planetary gear is in mesh transmission with the inner gear ring, the slip pendulum assembly comprises a slip gear and a slip pendulum, the slip gear is mounted on one side of the sun gear, which is far away from the planetary gears, the slip swinging piece can rotate under the driving of the sun gear, and can swing under the driving of the sun gear to touch the slip swinging piece, so that the speed can be adjusted.

4. The high-rise emergency escape device according to claim 3, wherein a mounting hole is formed in the middle of the planet carrier, the mounting hole is matched with a shaft sleeve of the transmission gear to enable the planet carrier to rotate along with the transmission gear, and the inner gear ring is fixedly connected with the left support or the right support.

5. The emergency escape device for high-rise buildings according to claim 3, wherein the carrier is triangular, the number of the planet gears is three, the planet gears are respectively mounted to three corners of the carrier through supporting shafts, the diameter of the sun gear is larger than that of the planet gears, and the number of teeth of the sun gear is larger than that of the planet gears.

6. The high-rise emergency escape device according to claim 3, wherein the slip gear is formed by plastic injection molding, a tooth-shaped inner ring is arranged in the middle of the slip gear, the tooth-shaped inner ring is matched with the sun gear, a plurality of tooth shapes are arranged on the outer edge of the tooth-shaped inner ring, the tooth width of the sun gear is larger than that of the planetary gear, the slip gear is sleeved on the outer side of one end, away from the planetary gear, of the sun gear, the slip gear can rotate along with the sun gear, the slip swing part is an arc-shaped part, a mounting hole matched with the roller shaft is formed in the middle of the slip gear, rotary drums are respectively arranged at two ends of the slip gear, and when the sun gear rotates, the slip gear is driven to rotate, and the rotary drums are touched to drive the slip swing part to swing.

7. The emergency escape device for high-rise buildings according to claim 3, wherein the left support and the right support are rotatably connected, the left support or the right support comprises an inner frame plate, an outer frame plate and a main frame body, the inner frame plate and the outer frame plate are arranged in parallel, the bottoms of the inner frame plate and the outer frame plate are integrally connected with the main frame body, the roller shaft is erected between the inner frame plate and the outer frame plate, the gear shaft is also erected between the inner frame plate and the outer frame plate, and the axes of the roller shaft and the gear shaft are arranged in parallel.

8. The high-rise emergency escape device according to claim 1, wherein the hanging shaft is a strip-shaped metal member with an annular groove formed therein, the top of the hanging shaft is rotatably connected with the middle part of the brake lever, the middle part of the hanging shaft is rotatably connected with both the left bracket and the right bracket, and the hanging hook is hung at the bottom of the hanging shaft.

9. The high-rise emergency escape device according to claim 1, further comprising a safety device, wherein the safety device is a U-shaped safety swing ring, and two ends of the safety swing ring are rotatably connected with two sides of the hanging shaft respectively, so that the safety swing ring is suspended outside the bottom of the hanging shaft.

10. The high-rise emergency escape device according to claim 1, further comprising a safety device, wherein the safety device is a safety torsion ring, the safety torsion ring comprises a straight line section and a U-shaped curve section, the bottom end of the straight line section is connected with one end of the U-shaped curve section, the straight line section is perpendicular to the plane of the U-shaped curve section, the top end of the straight line section is rotatably connected with the left support or the right support, and the U-shaped curve section can be surrounded on the outer side of the hanging shaft by rotating the straight line section.

Technical Field

The invention relates to the technical field of high-rise emergency escape, in particular to a high-rise emergency escape device.

Background

With the increasing number of urban high-rise buildings, under the emergency conditions of fire, earthquake and the like, how to quickly and safely leave rooms and people living in the high-rise buildings arrive on the ground is a global problem. Although rapid intervention fire and other full-time rescuers provide emergency assistance to trapped people, they are often not sufficiently timely, and thus such disasters can always pose a more or less serious threat to lives residing in high-rise buildings.

At present, the high-rise escape products sold in the market are mostly in a pulley-like lifting type, equipment is installed outside a balcony wall body, and people slide to the downstairs through ropes. This approach is extremely unsafe and is not particularly applicable to the elderly, children and people with panic disorder. In addition, the rope type gliding speed is difficult to control, people are easily injured due to the fact that the rope type gliding speed is in contact with facilities such as trees outside a building, rainsheds, clothes hangers and the like in the gliding process, the rope type gliding speed is troublesome to use, the escape time is too long, the escape golden time is delayed, and the good escape opportunity is missed.

In the existing high-rise escape emergency product, a speed limiting device is an indispensable part and comprises a shell and a plurality of gears arranged in the shell, and the speed limiting device generates a friction effect with a friction block in a friction hub through the operation of a planet gear speed reducing mechanism so as to ensure that a user can safely reach the ground. The existing high-rise emergency escape device is complex in structure and inconvenient to use, only depends on a planetary gear speed reducing mechanism to reduce speed, is difficult to slide downwards at a constant speed, is poor in reliability, and cannot reduce the speed quickly and effectively when a fault occurs.

In view of the above, the applicant provides an emergency escape device for high-rise buildings, so as to solve the above problems.

Disclosure of Invention

The invention aims to provide a high-rise emergency escape device which can be used in cooperation with a special handrail track, and utilizes a two-stage gear speed regulating device to speed up and then regulate the speed of a roller sliding down along the handrail track to enable the roller to tend to slide down at a constant speed.

The invention provides a high-rise emergency escape device which can be matched with a special handrail track arranged in a staircase for use, and is characterized by comprising the following components:

the roller group comprises a left roller and a right roller and is used for matching with the special handrail track to roll along the special handrail track;

the mounting bracket comprises a left bracket and a right bracket, roller shafts are respectively mounted on the left bracket and the right bracket, the left roller and the roller shafts are mounted on the left bracket in a matched manner through bearings, and the right roller and the roller shafts are mounted on the right bracket in a matched manner through bearings;

the lifting shaft is rotatably connected with the left support and the right support, and a lifting hook is hung at the bottom of the lifting shaft and used for lifting a seat or a hanging strip which can be taken by an escaper;

the two-stage gear speed regulating device comprises a primary speed increasing gear set and a planetary gear speed regulating mechanism, the primary speed increasing gear set is in matched transmission with the left roller or the right roller and is used for increasing the speed of the roller train, and the planetary gear speed regulating mechanism is in matched transmission with the primary speed increasing gear set and is used for regulating the rotating speed of the roller train to enable the roller train to rotate at a constant speed and descend;

the brake mechanism comprises a brake rod and a brake head, wherein the brake head is arranged at the top of the brake rod and used for reducing speed by friction with the bottom of the special handrail track, and the middle of the brake rod is rotatably connected with the hanging shaft.

Preferably, the primary speed increasing gear set comprises a driving gear and a transmission gear which are meshed with each other, the driving gear is integrally connected with the end face of the left roller or the end face of the right roller and can rotate along with the end face of the left roller or the end face of the right roller, and the transmission gear is rotatably installed on the left support or the right support through a gear shaft.

Preferably, the planetary gear speed adjusting mechanism includes a planet carrier, planetary gears, a sun gear, an inner gear ring and a slip pendulum assembly, the planetary gears are respectively mounted on the planet carrier through a supporting shaft, the centers of the planetary gears are located on the same circumference, the sun gear is located at the inner side of each planetary gear and is simultaneously engaged with each planetary gear for transmission, the sun gear is mounted on the gear shaft, the inner gear ring and the sun gear are coaxially arranged, each planetary gear is uniformly distributed between the inner gear ring and the sun gear, each planetary gear is engaged with the inner gear ring for transmission, the slip pendulum assembly includes a slip gear and a slip pendulum, the slip gear is mounted on one side of the sun gear far away from the planetary gears and can rotate under the driving of the sun gear, and touching the slip swing part to enable the slip swing part to swing, so as to regulate the speed.

Preferably, the middle part of the planet carrier is provided with a mounting hole, the mounting hole is matched with a shaft sleeve of the transmission gear to enable the planet carrier to rotate along with the transmission gear, and the inner gear ring is fixedly connected with the left support or the right support.

Preferably, the carrier has a triangular shape, the number of the planetary gears is three, the three planetary gears are respectively mounted to three corners of the carrier through support shafts, the diameter of the sun gear is larger than that of the planetary gears, and the number of teeth of the sun gear is larger than that of the planetary gears.

Preferably, the slip gear is formed by plastic integrated injection, a tooth-shaped inner ring installed in cooperation with the sun gear is arranged in the middle of the slip gear, a plurality of tooth shapes are arranged on the outer edge of the slip gear, the tooth width of the sun gear is larger than that of the planetary gear, the slip gear is sleeved on the outer side of one end, away from the planetary gear, of the sun gear, the slip gear can rotate along with the sun gear, the slip swing part is an arc-shaped part, an installation hole matched with the roller shaft is formed in the middle of the slip gear, rotary drums are installed at two ends of the slip gear respectively, and when the sun gear rotates, the slip gear is driven to rotate to touch the rotary drums, and the slip swing part is driven to swing.

Preferably, the left bracket and the right bracket are rotatably connected, the left bracket or the right bracket comprises an inner frame plate, an outer frame plate and a main frame body, the inner frame plate and the outer frame plate are arranged in parallel, the bottoms of the inner frame plate and the outer frame plate are integrally connected with the main frame body, the roller shaft is erected between the inner frame plate and the outer frame plate, the gear shaft is also erected between the inner frame plate and the outer frame plate, and the axis of the roller shaft and the axis of the gear shaft are arranged in parallel.

Preferably, the hanging shaft is a strip-shaped metal piece, an annular groove is formed in the hanging shaft, the top of the hanging shaft is rotatably connected with the middle of the brake rod, the middle of the hanging shaft is rotatably connected with the left support and the right support, and the hanging hook is hung at the bottom of the hanging shaft.

Preferably, the safety device is a U-shaped safety swing ring, and two ends of the safety swing ring are respectively rotatably connected with two sides of the hanging shaft, so that the safety swing ring is suspended outside the bottom of the hanging shaft.

Preferably, the safety device is a safety torsion ring, the safety torsion ring comprises a straight line section and a U-shaped curve section, the bottom end of the straight line section is connected with one end of the U-shaped curve section, the straight line section is perpendicular to the plane where the U-shaped curve section is located, the top end of the straight line section is rotatably connected with the left support or the right support, and the U-shaped curve section can be surrounded on the outer side of the hanging shaft by rotating the straight line section.

According to the technical scheme, the emergency escape device can be matched with a special handrail track for use, the left support and the right support are used for installing roller sets to slide down along the special handrail track arranged in a staircase, seats or slings and the like which can be carried by people are hung below the left support and the right support, and people can quickly escape under emergency conditions of fire, earthquake and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of an overall structure of a high-rise emergency escape apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view showing the positional relationship between the left and right brackets, the hanger shaft, the brake mechanism, etc. in the first embodiment of the present invention;

FIG. 3 is a schematic view showing an installation relationship between a two-stage gear speed adjusting device and a left bracket after the housing is opened according to the first embodiment of the present invention;

FIG. 4 is a schematic view of an installation relationship of a planetary gear speed adjusting device (with an inner gear ring omitted) according to a first embodiment of the present invention;

fig. 5 is a schematic view of the structure and the installation relationship of the safety device according to the second embodiment of the invention.

Description of reference numerals:

1: a special handrail track; 201: a left roller; 202: a right roller; 3: a roller shaft; 4: a left bracket; 401: an inner frame plate; 402: an outer frame plate; 403: a main frame body; 5: a right bracket; 6: a hanging shaft; 7: a hook; 8: a driving gear; 9: a transmission gear; 10: a gear shaft; 11: a planet carrier; 12: a planetary gear; 13: a sun gear; 14: an inner gear ring; 15: a slip gear; 16: a slip swing; 17: a brake mechanism; 1701: a brake lever; 1702: a brake tray; 1703: a brake pad; 1704: a brake handle; 18: a housing; 19: an inner cover plate; 20: a safety swing ring; 21: a safety torsion ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1, 2, 3 and 4, the present invention provides an emergency escaping device for a high building, which can be used in cooperation with a special handrail track 1 installed on a wall of a staircase or a preset column, wherein a track with an i-shaped cross section is disposed at the bottom of the special handrail track 1, and the emergency escaping device comprises: the roller group consists of a left roller 201 and a right roller 202 which are arranged oppositely, and the left roller 201 and the right roller 202 are matched with the I-shaped rail of the special handrail rail 1 respectively to roll along the I-shaped rail, the left roller 201 and the right roller 202 are both installed on an installation support through roller shafts 3, the installation support comprises a left support 4 and a right support 5, wherein the left roller 201 is installed on the left support 4 through the roller shafts 3, and the right roller 202 is installed on the right support 5 through the roller shafts 3.

The middle parts of the left idler wheel 201 and the right idler wheel 202 are provided with guide wheel discs, so that the high-rise escape device can be arranged to descend along the track all the time, and can be quickly clamped on the upper surface of the track, the device is prevented from being twisted or derailed to one side in the descending process, and the use safety of weak groups such as old, weak, women and children is ensured.

The left bracket 4 and the right bracket 5 are both in a transverse F shape, are symmetrically arranged and have the same structure, and the bottom ends of the left bracket 4 and the right bracket are rotatably connected, and the structure of the left bracket 4 is described by taking the left bracket as an example. The left support 4 comprises an inner frame plate 401, an outer frame plate 402 and a main frame body 403, the inner frame plate 401 and the outer frame plate 402 are arranged in parallel, the heights of the inner frame plate 401 and the outer frame plate 402 are the same, the main frame body 403 is vertically and integrally connected with the bottoms of the inner frame plate 401 and the outer frame plate 402, one end of the main frame body 403 of the left support 4, which is far away from the outer frame plate 402, is rotatably connected with a corresponding structure of the right support 5, the roller shaft 3 is erected between the inner frame plate 401 and the outer frame plate 402, and the left roller 201 is installed on the inner side of the inner frame plate 401 through the roller shaft 3.

Hang axle 6, hang axle 6 is the bar metalwork, the ring channel has been seted up along its length direction in its bottom, the middle part and the left socle 4 of hang axle 6 and the equal rotatable connection of right branch frame 5, hang the bottom of axle 6 and hang hook 7, hook 7 is used for hoisting the seat or suspender etc. that can supply the escaper to take, make the escaper can flee along the special handrail track that sets up in high building stairwell fast, and the action of gravity that produces through hook 7, can press from both sides left gyro wheel 201 and right gyro wheel 202 tightly on special handrail track 1, prevent the skew derailment of in-process down, weak force groups such as the old and weak woman child of being convenient for use.

At least one set of two-stage gear speed adjusting devices are installed on the left support 4 and the right support 5 to adjust the descending speed of the roller train, and the two-stage gear speed adjusting devices installed on the left support 4 are taken as an example to explain the structure of the two-stage gear speed adjusting devices. The two-stage gear speed regulation device comprises a primary speed increasing gear set and a planetary gear speed regulation mechanism, wherein the primary speed increasing gear set is in matched transmission with the left roller 201 and is used for increasing the speed of the left roller 201 so that the descending speed of the left roller is within an adjustable range. The first-stage speed-increasing gear set comprises a driving gear 8 and a transmission gear 9 which are meshed with each other, the driving gear 8 and the transmission gear 9 are straight gears, the driving gear 8 is integrally connected with the end face of the left roller 201 and can rotate along with the left roller, the transmission gear 9 is located on the lower side of the driving gear 8 and meshed with the driving gear 8, the transmission gear 9 is rotatably installed on the left support 4 through a gear shaft 10, and the gear shaft 10 sequentially penetrates through the inner frame plate 401 and the outer frame plate 402 and is installed with the inner frame plate and the outer frame plate through a bearing in a matched mode.

In the embodiment, the modulus of the driving gear 8 is 1.5, 26 teeth, and the pressure angle is 20 degrees; the modulus of the transmission gear 9 is 1.5, 20 teeth, and the pressure angle is 20 degrees; the transmission ratio of the transmission gear 9 and the driving gear 8 is 1.3, and the two gears are straight gears and are in a normally meshed state.

The planetary gear speed regulating mechanism is arranged between the inner frame plate 401 and the outer frame plate 402, and is in matched transmission with the primary speed increasing gear set for further regulating the rotating speed of the roller group.

The planet gear speed adjusting device comprises a planet carrier 11, a planet gear 12, a sun gear 13, an inner gear ring 14 and a slip pendulum assembly, wherein the middle part of the planet carrier 11 is provided with a mounting hole, and the planet carrier 11 is in interference fit with a shaft sleeve of the transmission gear 9 through the mounting hole and a hexagon nut, so that the planet carrier 11 rotates along with the transmission gear 9.

The planet carrier 11 is triangular, each corner of the planet carrier is provided with a supporting shaft, the number of the planet gears 12 is three, the three planet gears are respectively matched with each supporting shaft and can rotate relative to the supporting shafts, and the centers of the planet gears 12 are positioned on the same circumference. The sun gear 13 is located inside each planetary gear 12 and is in mesh transmission with each planetary gear 12, and the sun gear 13 is mounted on the gear shaft 10 to be rotatable relative thereto. The inner gear ring 14 and the sun gear 13 are coaxially arranged and fixedly connected with the inner frame plate 401 through fasteners, the three planet gears 12 are uniformly distributed between the inner gear ring 14 and the sun gear 13, and each planet gear 12 is simultaneously in meshing transmission with the inner gear ring 14 and the sun gear 13.

In the embodiment, the number of teeth of the inner gear ring 14 is 48, the number of teeth of the three planet gears 12 is 15, the number of teeth of the sun gear 18 is 1; the planetary gear ratio is about 3.67. The planetary gears 12 and the adjacent sun gear 13 and the inner gear ring 14 are always in a constant meshing state to improve descending smoothness.

In the two-stage gear speed-adjusting device, the drive gear 8 integrally connected to the left wheel 201 serves as an input end, the sun gear 13 serves as an output end, and the whole is speed-increasing torque-reducing transmission, and the speed-increasing ratio is about 3.67 × 1.3 — 4.77.

Slips pendulum subassembly includes slips gear 15 and slips goods of furniture for display rather than for use 16, and wherein, slips gear 15 installs the one end outside of keeping away from planetary gear 12 of sun gear 13, and it can rotate under sun gear 13 drives, and slips gear 15 touches slips goods of furniture for display rather than for use 16 and makes its swing, carries out the speed governing. The slip gear 15 is integrally formed by plastic through injection molding, a tooth-shaped inner ring which is matched with the outer teeth of the sun gear 13 is arranged at the center of the slip gear 15, so that at least 8 tooth shapes are arranged on the outer edge of the slip gear, the tooth width of the sun gear 13 is larger than that of the planet gear 12, the slip gear 15 is sleeved on the outer side of one end, far away from the planet gear 12, of the sun gear 13, and the slip gear 15 can rotate along with the sun gear 13.

The slip swing part 16 is an arc-shaped part, the middle part of the slip swing part is provided with a mounting hole matched with the roller shaft 3, the slip swing part can rotate or swing relative to the roller shaft 3, two ends of the arc-shaped part are respectively provided with a rotating drum, the rotating shaft of the rotating drum is arranged along the radius direction of the arc-shaped part, the rotating drum can rotate relative to the rotating shaft, when the sun gear 13 rotates, the sun gear drives the slip gear 15 sleeved outside the sun gear to synchronously rotate, the outer edge tooth profile of the slip gear 15 touches the rotating drum, so that the slip swing part 16 is stressed to swing relative to the roller shaft 3, resistance is generated on the slip gear 15, the tangential force in the accelerating rotation process of the slip gear is balanced, the rotating speed of the slip gear tends to be stable, and the slip gear 15 continuously collides with the slip swing part 16 and finally feeds back to the left roller 201, so that the slip part tends to slide down at a constant speed.

In this embodiment, the emergency escape device further comprises a brake mechanism 17, which includes a brake rod 1701, wherein the middle of the brake rod 1701 is hinged to the top of the hanging shaft 6, two ends of the brake rod 1701 respectively extend in a bending manner towards the upper right and lower left relative to the middle of the brake rod 1701, so as to form a lever structure with two ends extending in a bending manner relative to the middle, a brake head is disposed on the top of the brake rod 1701, the brake head includes a brake tray 1702 and a brake pad 1703, wherein the brake tray 1702 is hinged to the top end of the brake rod 1701, the brake pad 1703 is mounted on the brake tray 1702 through a fastener and extends from the interior of the brake tray 1702, and the bottom end of the brake rod 1701 is hinged to a brake handle 1704.

More specifically, brake block 1703 is formed by the friction material of 8mm thick with materials such as compound resin, copper wire complex, and the bottom of special handrail track 1 is equipped with anti-skidding line, and brake block 1703 can pass through the friction with its in close contact with and slow down. In the use, the person of fleing can drop down brake handle 1704, utilizes lever principle, makes the brake head lift up, because brake tray 1702 is articulated with brake pole 1701, makes brake block 1703 surface can with special handrail track 1 bottom comprehensive contact, relies on the frictional force between brake block 1703 and the antiskid line, makes the gliding speed of emergent ware of fleing effectively reduce, realizes the person of fleing to the autonomic control of device gliding speed, guarantees that speed is in safety range.

In this embodiment, the outer side of the left bracket 4 and the outer side of the right bracket 5 are further provided with an outer shell 18 which covers the left bracket 4 or the right bracket 5, the outer shell 18 is detachably connected with the left bracket 4 or the right bracket 5, the inner side of the inner frame plate 401 is further provided with an inner cover plate 19, and the inner cover plate 19 is used for covering the transmission gear 9 on the inner side of the inner cover plate to ensure stable and safe transmission.

In this embodiment, the safety device is a U-shaped safety swing ring 20, and both ends of the U-shaped opening of the safety swing ring 20 are respectively connected with both side surfaces of the hanging shaft 6 in a rotatable fit manner, so that the safety swing ring 20 is suspended outside the bottom of the hanging shaft 6. Under idle state, the U-shaped bottom of the safety swing ring 20 is positioned at the lower side of the hanging shaft, so that the matched installation of the safety swing ring and the special handrail track 1 is not influenced, when the safety swing ring is required to be used, the safety swing ring 20 rotates upwards, the lifting hook 7 is hung at the bottom of the hanging shaft 6, then the safety swing ring 20 rotates downwards, the lifting hook 7 can be pressed, the unhooking phenomenon is prevented, and the safety of escapers is ensured.

Example two

The present embodiment is completely the same as the first embodiment except that the safety device is different from the first embodiment. As shown in fig. 5, in the present embodiment, the safety device adopts a safety torsion ring 21, the safety torsion ring 21 includes a straight line section and a U-shaped curve section, a bottom end of the straight line section is connected to one end of the U-shaped curve section, the straight line section is perpendicular to a plane of the U-shaped curve section, a top end of the straight line section is rotatably connected to a bottom of the left bracket 4, and the U-shaped curve section is surrounded outside the hanging shaft 6 by rotating the straight line section. In idle state, the U-shaped curve section of the safety torsion ring 21 surrounds the outside of the hanging shaft 6, and does not affect the matching installation of the safety torsion ring and the special handrail track 1, when the safety torsion ring is needed to be used, the safety torsion ring 20 is rotated to one side, the lifting hook 7 is hung at the bottom of the hanging shaft 6, and then the safety torsion ring 21 is rotated to surround the outside of the hanging shaft 6, and one end of the safety torsion ring extends out of the upper side of the lifting hook 7, so that the unhooking phenomenon is prevented, and the safety of escapers is ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.