Single-screw elevator safety self-rescue structure

Abstract

The invention discloses a single-screw elevator safety self-rescue structure, and relates to the technical field of elevators, the single-screw elevator safety self-rescue structure comprises a vertical limiting rail, a loading platform and a separation assembly arranged between a lifting seat and a separation seat, a lead screw lifting structure composed of screws is arranged between the vertical limiting rail and the lifting seat, and the loading platform is integrated on the separation seat. The separating assembly is composed of a driving box arranged on the separating base, the input end of the driving box is connected with a hand-cranking wheel, the output end of the driving box is provided with a pay-off wheel wound with a pull rope, and an auxiliary wheel set is arranged between the separating base and the lifting base. Manual separation between the lifting seat and the separation seat in the elevator fault state is achieved, so that members on a loading platform can achieve self rescue manually. And by arranging the hand-cranking wheel and the reset motor, the separation base can fall manually during self rescue, and meanwhile automatic reset can be achieved by means of the reset motor when the separation base is reset.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a safety self-rescue structure for single-screw elevators. Background Art

[0002] At present, with the vigorous development of social economy and the significant improvement of quality of life, the application scope of screw elevators as an innovative and efficient vertical transportation tool is expanding at an unprecedented rate. Especially in the field of home use, screw elevators have gradually become the preferred solution for many families to improve living conditions and improve the quality of life with their unique advantages. This trend not only reflects the urgent need of modern families for a convenient, comfortable and safe living environment, but also highlights the profound impact of scientific and technological progress on daily lifestyles. The reason why screw elevators can be quickly popularized among home users is due to their many significant features: First, their compact structure and small footprint make them very suitable for installation in residential environments with limited space. Whether it is a villa, duplex apartment or the renovation and upgrading of old houses, they can be easily adapted, greatly broadening the use scenarios; secondly, screw elevators run smoothly and have extremely low noise, providing family members with a quiet and comfortable elevator experience, especially for families with elderly people, children or those who need a quiet environment; thirdly, the screw drive technology is mature and reliable, with low maintenance costs and high safety. It is equipped with multiple protection mechanisms to ensure that every lift is worry-free, meeting the high attention of home users to safety.

[0003] Due to the overload operation of elevators, inadequate maintenance, quality problems of the elevators themselves, and the complex and changeable operating environment of elevators (including wear of internal mechanical parts and erosion of the external environment); the elevator may suddenly stop running, and its lifting mechanism loses power support and cannot continue to drive the car for normal lifting operations, resulting in passengers being trapped inside the elevator in a closed and potentially dangerous environment; although there are some elevator self-rescue systems on the market that are designed to deal with emergencies when elevators fail, these systems have exposed many shortcomings in actual applications. They often cannot fully cover multiple failure modes such as electrical failures and mechanical failures, resulting in limited self-rescue capabilities; at the same time, the reliability of these systems is generally low. These self-rescue devices are usually idle during daily operation of the elevator, lacking the necessary maintenance and inspection. Internal components may fail or age due to long-term non-use. Once activated in an emergency, they will not only fail to play the expected rescue role, but may introduce new safety risks due to failures, causing more serious injuries to passengers. Summary of the invention

[0004] This device provides a single screw elevator safety self-rescue structure, the specific implementation is as follows:

[0005] A single screw elevator safety self-rescue structure, comprising:

[0006] A vertical limit rail and a load-bearing platform, wherein the load-bearing platform is slidably connected to the vertical limit rail through a lifting seat and a separation seat, and a screw lifting structure composed of a screw rod is provided between the vertical limit rail and the lifting seat;

[0007] A separation assembly is arranged between the lifting seat and the separation seat, the load-bearing platform is integrated on the separation seat, and a vertical through hole for the screw to pass through is reserved on the separation seat;

[0008] The separation assembly is composed of a drive box arranged on the separation seat, the input end of the drive box is connected to a hand-cranked wheel, the output end of the drive box is provided with a pay-off wheel for winding a pull rope, an auxiliary wheel group is provided between the separation seat and the lifting seat, the other end of the pull rope is wound through the auxiliary wheel group and then connected to the separation seat, and the pull rope is released by manually controlling the hand-cranked wheel, so that in the event of an elevator failure, the separation seat and the load-bearing platform fall vertically relative to the lifting seat, thereby completing the safe self-rescue of the members in the elevator.

[0009] Based on the above technical solution, by configuring a separation component driven by a hand-cranked wheel and using a pull rope to control the falling mechanism, the manual disengagement function between the lifting seat and the separation seat of the elevator is realized in the event of a fault, so that the occupants on the load-bearing platform can independently perform emergency self-rescue measures.

[0010] Preferably, it also includes a magnetic scale structure for position detection, which includes a magnetic strip arranged in parallel with the vertical limit rail, and a sensor for detecting the magnetic strip is arranged on the separation seat.

[0011] Preferably, a controller is further included, a support column is provided between the lifting seat and the separation seat, and a pressure sensor for detecting the support column is provided on the separation seat.

[0012] Based on the above technical solution, by installing a sensor for detecting the magnetic strip on the separation seat, not only can the height information of the load-bearing platform under normal operating conditions be accurately monitored, but also the position of the load-bearing platform can be accurately located after the self-rescue operation is completed, thereby facilitating the subsequent resetting of the separation seat; when the separation seat and the lifting seat are separated, the support column can be set to fall automatically, and by arranging pressure sensors, real-time detection of separation between the lifting seat and the separation seat can be achieved, effectively improving the perception of misoperation of the separation component under normal operating conditions of the elevator.

[0013] Preferably, the auxiliary wheel group includes a pair of first auxiliary wheels and a second auxiliary wheel arranged in a staggered manner on the lifting seat; a support wheel is provided on the separation seat, the release end of the pull rope is connected to the pair of first auxiliary wheels during the outward journey, and the pull rope is connected to the pair of second auxiliary wheels during the return journey through the inclined support wheel, and the end of the pull rope is connected to the separation seat.

[0014] Preferably, the drive box is a worm gear structure, one end of the worm gear is connected to the pay-off wheel, and the two ends of the worm gear are respectively connected to the hand-cranked wheel and the reset motor, and the reset motor is used to realize the automatic return of the separation seat after self-rescue is completed and repaired.

[0015] Based on the above technical solution, by arranging the hand wheel and the reset motor coaxially and in different directions, not only can the separation seat be smoothly lowered by manual operation in emergency self-rescue, but also when the separation seat needs to be reset, it can be automatically reset with the help of the power of the reset motor, thereby greatly improving the flexibility and convenience of operation; the drive box is a worm gear structure, and can also be designed as a conventional reducer structure.

[0016] Preferably, the other end of the worm wheel is connected to a one-way speed reducer; the one-way speed reducer includes an I-shaped rotating disk coaxially arranged with the worm wheel, the straight rod section of the I-shaped rotating disk is provided with a sliding disk, a spring is provided between the sliding disk and the distal disk of the I-shaped rotating disk, a damping ring is also provided on the distal disk, the damping ring cover is provided on the outer side of the sliding disk, the two are frictionally engaged in rotation, and axial displacement can occur between the two; the proximal disk of the I-shaped rotating disk and the sliding disk are evenly provided with a number of right-angled blocks along the circumferential direction, and the right-angled blocks of the two are consistent with each other.

[0017] Preferably, the outer side of the proximal disc of the I-shaped rotating disc is provided with a second sawtooth ring, the outer side of the driving box is provided with a driven rotating disc for rotation, and the driven rotating disc is provided with a first sawtooth ring meshing with the second sawtooth ring.

[0018] Based on the above technical scheme, by setting a one-way deceleration component, it can effectively provide deceleration damping when the occupants perform manual self-rescue, ensuring the safety and stability of the operation; and when the reset motor is used to reset the separation seat and the load platform, the one-way deceleration device no longer applies the deceleration effect, thereby realizing a fast and smooth reset process for both; by setting a right-angle bevel block, when the I-shaped rotating disk rotates forward, the right-angle end of the right-angle bevel block drives the right-angle end of the right-angle bevel block on the sliding disk to rotate synchronously; when the I-shaped rotating disk reverses, the right-angle end of the right-angle bevel block drives the inclined surface end of the right-angle bevel block on the sliding disk, thereby causing the sliding disk to move axially, and the sliding disk does not rotate synchronously with the I-shaped rotating disk.

[0019] Preferably, the hand-cranked wheel is composed of a telescopic rod and a turntable, and an L-shaped rotating lock rod is rotatably provided on the turntable; the driven turntable is provided with a plurality of positioning grooves along the circumference, one end of the L-shaped rotating lock rod is a handle portion, and the other end is a locking portion that is inserted into the positioning groove.

[0020] Preferably, the sides of the lifting seat and the separation seat are both provided with guide wheel groups slidably connected to the vertical limit rail; the guide wheel group consists of a first guide wheel and a second guide wheel arranged longitudinally and transversely, both of which are slidably connected to the vertical limit rail.

[0021] Based on the above technical solution, a hand-cranked wheel with a telescopic rod and an L-shaped rotating locking rod is provided, so that the hand-cranked wheel intervenes in the rotation locking of the I-shaped rotating disk when in an idle state; when the worm gear structure in the drive box is damaged, the positioning groove acts on the side of the L-shaped rotating locking rod, so that the L-shaped rotating locking rod cannot be easily pulled out, thereby avoiding the passengers from using the self-rescue structure when the worm gear structure is damaged, thereby further improving the safety of the application of the self-rescue structure.

[0022] Preferably, the lifting seat is internally provided with a shaft-through motor threadedly connected to the screw rod.

[0023] Based on the above technical solution, a shaft-through motor can be configured inside the lifting seat, and the lifting seat can be driven to move up and down along the fixed screw through the rotation of the motor; a motor can also be installed at the far end, and the motor can be used to drive the screw to rotate, thereby enabling the lifting seat to achieve the function of up and down lifting.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. The present invention realizes manual separation between the lifting seat and the separation seat in the elevator failure state by providing a separation assembly driven by a hand-cranked wheel and adopting a rope-drawn falling structure, so that members on the load-bearing platform can manually realize self-rescue;

[0026] 2. The present invention has a simple structure. By providing a hand-cranked wheel and a reset motor, the manual separation seat can be lowered during self-rescue, and the separation seat can be automatically reset with the help of the reset motor when it is reset.

[0027] 3. The present invention provides a one-way deceleration member to provide a deceleration damping effect when the occupant manually rescues himself. When the separation seat and the load-carrying platform are reset by the reset motor, the one-way deceleration member no longer provides a deceleration effect, thereby realizing a rapid reset of the separation seat and the load-carrying platform;

[0028] 4. The present invention provides a hand-cranked wheel with a telescopic rod and an L-shaped rotating lock rod, so that the hand-cranked wheel intervenes in the rotation locking of the I-shaped rotating disk in an idle state. When the worm gear structure in the drive box is damaged, the positioning groove acts on the side of the L-shaped rotating lock rod, so that the L-shaped rotating lock rod cannot be easily pulled out, thereby avoiding the passengers from using the self-rescue structure when the worm gear structure is damaged, and further improving the safety of the application of the self-rescue structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a side enlarged view of some structures in the present invention;

[0031] Figure 3 It is an enlarged front view of some structures in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the lifting seat and the separation seat in the present invention;

[0033] Figure 5 It is a schematic diagram of the explosion structure of the lifting seat and the separation seat in the present invention;

[0034] Figure 6 The present invention Figure 4 A magnified view of the structure in the middle;

[0035] Figure 7 It is a schematic diagram of the structure of the separation component in the present invention;

[0036] Figure 8 is a cross-sectional view of the separation component structure of the present invention;

[0037] Fig. 9 It is a schematic diagram of the explosion structure of the separation component in the present invention;

[0038] Fig.10 The present invention Fig. 9 Cross-section of the structure.

[0039] Description of reference numerals:

[0040] 1. Vertical limit rail, 2. Screw, 3. Shaft motor, 4. Lifting seat, 5. Separation seat, 6. Loading platform, 7. Guide wheel set, 8. Support column, 9. Separation component, 10. Magnetic strip, 11. Sensor,

[0041] 701, first guide wheel, 702, second guide wheel, 901, drive box, 902, hand wheel, 903, pay-off wheel, 904, pull rope, 905, auxiliary wheel set, 906, reset motor, 907, driven turntable, 908, one-way speed reducer,

[0042] 9011. Worm wheel, 9012. Worm, 9021. Telescopic rod, 9022. Turntable, 9023. Rotating lock rod, 9051. First auxiliary wheel, 9052. Second auxiliary wheel, 9053. Support wheel, 9071. Positioning groove, 9072. First serrated ring, 9081. I-shaped rotating disk, 9082. Damping ring, 9083. Spring, 9084. Sliding disk, 9085. Right-angled bevel block, 9086. Second serrated ring. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0044] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0045] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0046] The following is combined with Figure 1-10 This application is further described in detail.

[0047] The embodiment of the present application discloses a single-screw elevator safety self-rescue structure.

[0048] Example 1

[0049] Reference Figures 1 to 6 The present embodiment discloses a safety self-rescue structure for a single-screw elevator, comprising a controller, a magnetic scale structure for position detection, a vertical limit rail 1, a load-bearing platform 6, and a separation assembly 9 arranged between a lifting seat 4 and a separation seat 5. The load-bearing platform 6 is slidably connected to the vertical limit rail 1 through the lifting seat 4 and the separation seat 5. A lead screw lifting structure composed of a screw 2 is arranged between the vertical limit rail 1 and the lifting seat 4. The load-bearing platform 6 is integrated on the separation seat 5, and a vertical through hole is reserved on the separation seat 5 for the screw 2 to pass through. In the present structure, the lifting seat 4 is built with a shaft-through motor 3 threadedly connected to the screw 2. The separation assembly 9 is composed of a drive box 901 arranged on the separation seat 5. The input end of the drive box 901 is connected to a hand-cranked wheel 902. The lifting seat 4 is separated from the separation seat 5 by rotating the hand-cranked wheel 902, thereby realizing the manual descent of the load-bearing platform 6 when the single-screw elevator fails.

[0050] A pay-off wheel 903 for winding a pull rope 904 is provided at the output end of the drive box 901, an auxiliary wheel group 905 is provided between the separation seat 5 and the lifting seat 4, the other end of the pull rope 904 is wound through the auxiliary wheel group 905 and then connected to the separation seat 5, and the pull rope 904 is released by manually operating the hand-cranked wheel 902, so that in the event of an elevator failure, the separation seat 5 and the load-carrying platform 6 fall vertically relative to the lifting seat 4, thereby completing the safe self-rescue of the members in the elevator. In this structure, the auxiliary wheel group 905 includes a pair of first auxiliary wheels 9051 and a second auxiliary wheel 9052 arranged in a staggered manner on the lifting seat 4, a support wheel 9053 is provided on the separation seat 5, the release end of the pull rope 904 is connected to the pair of first auxiliary wheels 9051 during the outward journey, and the pull rope 904 is connected to the pair of second auxiliary wheels 9052 during the return journey through the inclined support wheel 9053, and the end of the pull rope 904 is connected to the separation seat 5.

[0051] The magnetic scale structure includes a magnetic strip 10 arranged in parallel with the vertical limit rail 1, a sensor 11 for detecting the magnetic strip 10 is arranged on the separation seat 5, a support column 8 is abutted between the lifting seat 4 and the separation seat 5, and a pressure sensor for detecting the support column 8 is provided on the separation seat 5. In this structure, the sensor 11 and the pressure sensor are electrically connected to the signal input end of the controller.

[0052] The sides of the lifting seat 4 and the separation seat 5 are both provided with a guide wheel group 7 slidably connected to the vertical limit rail 1. In this structure, the guide wheel group 7 consists of a first guide wheel 701 and a second guide wheel 702 arranged longitudinally and transversely, both of which are slidably connected to the vertical limit rail 1.

[0053] The specific implementation process is: when the elevator fails and the electrical system cannot be used, the member turns the hand-cranked wheel 902, so that the drive box 901 is transmitted to the pay-out wheel 903 to pay out the pull rope 904; due to the load of the members in the load-bearing platform 6, the pull rope 904 causes the separation seat 5 to fall stably relative to the lifting seat 4; the crew manually turns the hand-cranked wheel 902 to lower the load-bearing platform 6 to the bottom of the elevator to complete the self-rescue action.

[0054] Example 2

[0055] Reference Figures 7 to 10 , and based on the above-mentioned embodiment 1, this embodiment also provides a single-screw elevator safety self-rescue structure, the drive box 901 is a worm gear structure, one end of the worm wheel 9011 is connected to the wire-releasing wheel 903, and the two ends of the worm 9012 are respectively connected to the hand-cranked wheel 902 and the reset motor 906, and the reset motor 906 is used to realize the automatic return of the separation seat 5 after the self-rescue is completed and repaired. In this structure, the other end of the worm wheel 9011 is connected to the one-way reduction member 908. By setting the reset motor 906, the automatic reset of the separation seat 5 relative to the lifting seat 4 is realized after the single-screw elevator is repaired, and the one-way reduction member 908 only provides a deceleration effect when the members use the hand-cranked wheel 902 to drive for self-rescue.

[0056] The one-way speed reducer 908 includes an I-shaped rotating disk 9081 coaxially arranged with the worm gear 9011, and a sliding disk 9084 is provided on the straight rod section of the I-shaped rotating disk 9081. A spring 9083 is provided between the sliding disk 9084 and the distal disk of the I-shaped rotating disk 9081. A damping ring 9082 is also provided on the distal disk, and the damping ring 9082 is covered on the outer side of the sliding disk 9084. The two are frictionally matched in rotation, and axial displacement can occur between the two. The proximal disk of the I-shaped rotating disk 9081 and the sliding disk 9084 are evenly arranged with a number of right-angled blocks 9085 along the circumferential direction, and the right-angled blocks 9085 of the two are consistent with each other.

[0057] Example 3

[0058] Reference Figures 1 to 10 , and based on the above-mentioned embodiment 2, this embodiment also provides a single-screw elevator safety self-rescue structure, the outer side of the proximal disc of the I-shaped rotating disk 9081 is set to a second serrated ring 9086, and a driven rotating disk 907 is rotatably provided on the outer side of the driving box 901, and the driven rotating disk 907 is provided with a first serrated ring 9072 meshing with the second serrated ring 9086. In this structure, the secondary locking of the driving box 901 is achieved through the interlocking structure of the hand-cranked wheel 902. When the worm gear structure breaks teeth or loses teeth, the hand-cranked wheel 902 cannot be opened, thereby improving the safety of self-rescue.

[0059] The hand wheel 902 is composed of a telescopic rod 9021 and a turntable 9022, and an L-shaped rotating lock rod 9023 is rotatably provided on the turntable 9022. The driven turntable 907 is provided with a plurality of positioning grooves 9071 along the circumferential direction. One end of the L-shaped rotating lock rod 9023 is a handle portion, and the other end is a locking portion that is inserted into the positioning groove 9071.

[0060] The specific implementation process is: when the elevator fails and the electrical system cannot be used, and the drive box 901 is used normally, pull and flip the hand wheel 902 so that the L-shaped rotating lock rod 9023 disengages from the positioning groove 9071; when the hand wheel 902 is turned, the worm 9012 drives the worm wheel 9011 to rotate, and then the pull rope 904 of the pay-off wheel 903 is paid out; at the same time, the I-shaped rotating disk 9081 drives the sliding disk 9084 to rotate synchronously, and the sliding disk 9084 circumferentially rubs against the damping ring 9082 to produce a damping and deceleration effect; self-rescue is completed, and the reset motor 906 is used to drive the worm 9012 to reset the separation seat 5. During this period, the I-shaped rotating disk 9081 and the sliding disk 9084 produce axial sliding, and the I-shaped rotating disk 9081 does not drive the sliding disk 9084 to rotate synchronously, and then the damping ring 9082 does not produce a damping and deceleration effect.

[0061] When the elevator fails and the electrical system cannot be used, and the drive box 901 is damaged, the worm 9012 loses its locking force on the worm wheel 9011, and the I-shaped rotating disk 9081 tends to rotate. Since there is a meshing relationship between the driven turntable 907 and the I-shaped rotating disk 9081, and the L-shaped rotating lock rod 9023 is inserted into the positioning groove 9071, the I-shaped rotating disk 9081 cannot rotate. At the same time, this rotation tendency produces lateral pressure on the L-shaped rotating lock rod 9023, and the passengers cannot pull out the L-shaped rotating lock rod 9023 for self-rescue. After the elevator is restored, the drive box 901 will be inspected and maintained.

[0062] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A single screw elevator safety self-rescue structure, characterized in that: include: A vertical limit rail (1) and a load-bearing platform (6), wherein the load-bearing platform (6) is slidably connected to the vertical limit rail (1) via a lifting seat (4) and a separation seat (5), and a screw lifting structure composed of a screw rod (2) is provided between the vertical limit rail (1) and the lifting seat (4); A separation assembly (9) is arranged between the lifting seat (4) and the separation seat (5), the load-bearing platform (6) is integrated on the separation seat (5), and a vertical through hole for the screw rod (2) to pass through is reserved on the separation seat (5); The separation assembly (9) is composed of a drive box (901) arranged on the separation seat (5), the input end of the drive box (901) is connected to a hand-cranked wheel (902), the output end of the drive box (901) is provided with a pay-off wheel (903) for winding a pull rope (904), an auxiliary wheel group (905) is provided between the separation seat (5) and the lifting seat (4), the other end of the pull rope (904) is wound through the auxiliary wheel group (905) and then connected to the separation seat (5), and the pull rope (904) is released by manually operating the hand-cranked wheel (902), so that in the event of an elevator failure, the separation seat (5) and the load-bearing platform (6) fall vertically relative to the lifting seat (4), thereby completing the safe self-rescue of the members in the elevator.

2. A single screw elevator safety self-rescue structure according to claim 1, characterized in that: It also includes a magnetic scale structure for position detection, which includes a magnetic strip (10) arranged in parallel with the vertical limit rail (1), and a sensor (11) for detecting the magnetic strip (10) is arranged on the separation seat (5).

3. A single screw elevator safety self-rescue structure according to claim 2, characterized in that: The auxiliary wheel set (905) comprises a pair of first auxiliary wheels (9051) and a second auxiliary wheel (9052) which are arranged on the lifting seat (4) in a staggered manner; The separation seat (5) is provided with a support wheel (9053), and the release end of the pull rope (904) is connected to a pair of the first auxiliary wheels (9051) during the outward journey. The pull rope (904) is connected to a pair of the second auxiliary wheels (9052) during the return journey through the inclined support wheel (9053), and the end of the pull rope (904) is connected to the separation seat (5).

4. A single screw elevator safety self-rescue structure according to claim 3, characterized in that: The driving box (901) is a worm gear structure, one end of the worm gear (9011) is connected to the pay-off wheel (903), and the two ends of the worm gear (9012) are respectively connected to the hand-cranked wheel (902) and the reset motor (906), and the reset motor (906) is used to realize the automatic return of the separation seat (5) after self-rescue is completed and repaired.

5. A single screw elevator safety self-rescue structure according to claim 4, characterized in that: The other end of the worm wheel (9011) is connected to a one-way speed reducing member (908); The one-way speed reducer (908) comprises an I-shaped rotating disk (9081) arranged coaxially with the worm gear (9011), a straight rod section of the I-shaped rotating disk (9081) is provided with a sliding disk (9084), a spring (9083) is provided between the sliding disk (9084) and the distal disk of the I-shaped rotating disk (9081), a damping ring (9082) is also provided on the distal disk, and the damping ring (9082) is covered on the outer side of the sliding disk (9084), the two are rotationally frictionally matched, and an axial displacement is left between the two; The proximal circular disc of the I-shaped rotating disc (9081) and the sliding disc (9084) are both evenly provided with a plurality of right-angled bevel blocks (9085) along the circumferential direction, and the right-angled bevel blocks (9085) of the two are mutually matched.

6. A single screw elevator safety self-rescue structure according to claim 5, characterized in that: The outer side of the proximal circular disc of the I-shaped rotating disc (9081) is provided with a second sawtooth ring (9086), the outer side of the driving box (901) is provided with a driven rotating disc (907) for rotation, and the driven rotating disc (907) is provided with a first sawtooth ring (9072) meshing with the second sawtooth ring (9086).

7. A single screw elevator safety self-rescue structure according to claim 6, characterized in that: The hand-cranked wheel (902) is composed of a telescopic rod (9021) and a rotating disk (9022), and an L-shaped rotating lock rod (9023) is rotatably provided on the rotating disk (9022); The driven rotating disk (907) is provided with a plurality of positioning grooves (9071) along the circumferential direction. One end of the L-shaped rotating locking rod (9023) is provided as a handle portion, and the other end is a locking portion inserted into the positioning groove (9071).

8. The single screw elevator safety self-rescue structure according to claim 1, characterized in that: It also comprises a controller, a support column (8) is provided between the lifting seat (4) and the separation seat (5), and a pressure sensor for detecting the support column (8) is provided on the separation seat (5).

9. A single screw elevator safety self-rescue structure according to claim 1, characterized in that: The sides of the lifting seat (4) and the separation seat (5) are both provided with guide wheel groups (7) slidably connected to the vertical limit rail (1); The guide wheel group (7) is composed of a first guide wheel (701) and a second guide wheel (702) arranged longitudinally and transversely, and both are slidably connected to the vertical limit rail (1).

10. A single screw elevator safety self-rescue structure according to claim 1, characterized in that: The lifting seat (4) is internally provided with a shaft-connected motor (3) which is threadedly connected to the screw rod (2).

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