Elevator rope release device and elevator

Abstract

The present application relates to an elevator rope release device and an elevator. The elevator rope release device of the present application includes: a rope, a holding device, a second bracket, a first rope pulley, a second rope pulley and a driving device. The holding device includes a first bracket and a plurality of rope pressure pulleys, each rope pressure pulley is arranged on the first bracket, and a gap is left between each two rope pressure pulleys for the rope to pass through; the first rope pulley is arranged on the second bracket; the second rope pulley is rotatable around its own axis and is arranged on the second bracket; the driving device is used to drive the first rope pulley and the second rope pulley to rotate; wherein one end of the rope is connected to the rope storage reel, and the other end passes through the gap and repeatedly passes around the first rope pulley and the second rope pulley at least twice. Therefore, the present application generates a certain positive pressure by pressing the rope by the rope pressure pulley in the holding device, and repeatedly rewinds the rope by the first rope pulley and the second rope pulley to increase the wrap angle, increase the force ratio at both ends of the rope, and thus better release the rope.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to an elevator rope release device and an elevator. Background Art

[0002] The split-level elevator is a new elevator installation technology that can be installed and operated during the structural construction process and can also serve as a construction elevator. The promotion and use of this technology will have good social and economic benefits.

[0003] In the existing technology, the basic solution for self-climbing leap-level elevators is to temporarily close the completed part of the shaft and build a movable temporary machine room at the top of the shaft. The main engine, control cabinet, etc. are placed in the temporary machine room, and then the temporary machine room is fixed in the shaft. The lower part of the temporary machine room is the normal car counterweight. Extension materials such as wire ropes are stored in the temporary machine room or placed on the ground through reels. When the building is built to a certain height, the temporary machine room can be lifted up to a certain height, and the extension materials are released from the reels to a corresponding length, thereby completing the leap-level.

[0004] Due to the weight of the wire rope itself and the large number of components in the well, the wire rope easily interferes with other components in the well, causing difficulties in releasing the wire rope during temporary hoisting in the machine room. This is because: if the wire rope is pulled out before hoisting, the pulled-out wire rope is relatively tangled, not only easily twisted together during hoisting, but also easily entangled with adjacent components, posing a major safety hazard; if the wire rope storage reel is opened directly, the weight of the wire rope will cause the wire rope reel to rotate out of control during hoisting; if the staff pulls the wire rope to prevent it from sliding, it is dangerous and does not meet the operating standards.

[0005] Therefore, how to better release the wire rope becomes a problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] The purpose of the present application is to provide an elevator rope release device and an elevator, which can better release the rope.

[0007] In order to achieve the above objectives,

[0008] In the first aspect, the present application provides an elevator rope release device, comprising: a rope winding, a holding device, a second bracket, a first rope winding wheel, a second rope winding wheel and a driving device, the holding device comprising a first bracket and a plurality of rope pressure wheels, each rope pressure wheel being rotatable around its own axis and being arranged on the first bracket, and a gap being left between each two rope pressure wheels for the rope to pass through; the first rope winding wheel being rotatable around its own axis and being arranged on the second bracket; the second rope winding wheel being rotatable around its own axis and being arranged on the second bracket; the driving device is transmission-connected to the first rope winding wheel and the second rope winding wheel, for driving the first rope winding wheel and the second rope winding wheel to rotate; wherein, one end of the rope is connected to the rope storage reel, and the other end passes through the gap and repeatedly passes around the first rope winding wheel and the second rope winding wheel at least twice.

[0009] In one embodiment, the driving device includes: a worm, a worm wheel and a driving motor, the worm wheel is engaged with the worm; the driving motor is connected to the worm for driving the worm to rotate; the transmission assembly connects the worm wheel, the first rope winding wheel and the second rope winding wheel so that the worm wheel can drive the first rope winding wheel and the second rope winding wheel to rotate.

[0010] In one embodiment, the transmission assembly includes: a first rotating wheel and a second rotating wheel, the first rotating wheel is fixedly connected to the first rope winding wheel; the second rotating wheel is fixedly connected to the second rope winding wheel; wherein, the first rope winding wheel and the second rope winding wheel are connected together through the first rotating wheel and the second rotating wheel.

[0011] In one embodiment, the transmission assembly further includes: an intermediate gear, which is rotatable around its own axis and is arranged on the second bracket, wherein the first rotating wheel and the second rotating wheel are both gears, and the intermediate gear is respectively engaged with the first rotating wheel and the second rotating wheel; the worm gear is fixedly connected to the second rope winding wheel or the intermediate gear.

[0012] In one embodiment, the worm wheel is fixedly connected to the second rope winding wheel; the first rotating wheel and the second rotating wheel are connected via a belt or chain transmission.

[0013] In one embodiment, the transmission assembly further includes: a first connecting shaft and a second connecting shaft, the first connecting shaft and the second connecting shaft are both rotatable around their own axes and are arranged on the second bracket, the first rotating wheel and the first rope winding wheel are both fixed to the first connecting shaft; the worm gear, the second rotating wheel and the second rope winding wheel are all fixed to the second connecting shaft.

[0014] In one embodiment, the retaining device further comprises: a plurality of dampers, and each rope pressing wheel is rotatably disposed on the first bracket via a damper.

[0015] In one embodiment, the holding device further includes: a plurality of rope pressing blocks, which are disposed on the first bracket and are arranged toward the gap.

[0016] In the second aspect, the present application provides an elevator, comprising: a shaft, a machine room, a lifting device, a car and an elevator rope release, the machine room being located at the top of the shaft; the car being movably located in the shaft; the lifting device being connected to the car and used to drive the car to lift and lower, comprising a traction machine, a counterweight, a first lifting wheel and a second lifting wheel, the traction machine being located in the machine room, the first lifting wheel being located on the top of the counterweight, and the second lifting wheel being located on the top of the car; the elevator rope release is the elevator rope release described in any one of the aforementioned embodiments, the rope storage reel, the first bracket and the second bracket being located in the machine room or the shaft; wherein the rope is wound around the first lifting wheel and the second lifting wheel, and is connected to the traction machine for lifting the car.

[0017] In the third aspect, the present application provides an elevator, comprising: a shaft, a machine room, a tensioning pulley, a speed limiter, a car and an elevator rope release, wherein the machine room is located at the top of the shaft; the tensioning pulley is located at the bottom of the shaft; the speed limiter has a speed limiter wheel, and the speed limiter is located in the machine room; the car is movably located in the shaft, and a safety clamp assembly and a lifting device are provided on the car; the elevator rope release is the elevator rope release described in any one of the aforementioned embodiments, and the rope storage reel, the first bracket and the second bracket are all located in the car; wherein the rope is wound around the speed limiter wheel and the tensioning pulley, and is connected to the lifting device to trigger the action of the safety clamp assembly.

[0018] The beneficial effects of this application compared with the prior art are:

[0019] The present application generates a certain positive pressure by pressing the rope against the rope pulley in the holding device, and repeatedly winds the rope through the first rope winding wheel and the second rope winding wheel to increase the wrap angle, thereby increasing the force ratio at both ends of the rope, so that the rope can be wound more stably in the rope storage reel, and will not accelerate down due to its own gravity or cause the rope storage reel to rotate out of control. In addition, the present application can drive the first rope winding wheel to rotate through the driving device, thereby realizing the function of smoothly releasing the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the internal structure of an elevator according to an embodiment of the present application;

[0022] Figure 2 This is a partial structural diagram of an elevator according to an embodiment of the present application;

[0023] Figure 3 This is a partial structural diagram of an elevator rope release device according to one embodiment of the present application;

[0024] Figure 4 This is a partial structural diagram of an elevator rope release device according to one embodiment of the present application;

[0025] Figure 5 This is a partial structural diagram of an elevator rope release device according to one embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the internal structure of an elevator shown in one embodiment of the present application.

[0027] Icons: 1- elevator; 100- shaft; 200- machine room; 300- tension pulley; 400- speed limiter; 410- speed limiter wheel; 500- car; 510- safety clamp assembly; 520- lifting device; 530- lifting device; 531- traction machine; 532- counterweight; 533- first lifting wheel; 534- second lifting wheel; 600- elevator rope release device; 610- rope storage drum; 620- rope winding; 621- main rope segment; 622- auxiliary rope segment; 623- lifting fixture; 630- holding device; 6 31-first bracket; 632-rope pressure wheel; 633-gap; 634-damper; 635-rope pressure block; 640-second bracket; 651-first rope winding wheel; 652-second rope winding wheel; 653-rope groove; 660-driving device; 661-worm; 662-worm wheel; 663-driving motor; 670-transmission assembly; 671-first rotating wheel; 672-second rotating wheel; 673-intermediate gear; 674-first connecting shaft; 675-second connecting shaft; 676-third connecting shaft; 677-belt. DETAILED DESCRIPTION

[0028] The terms "first", "second", "third", etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] In the description of this application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0031] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two elements.

[0032] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings.

[0033] Please refer to Figure 1 , which is a schematic diagram of the internal structure of an elevator 1 shown in an embodiment of the present application. The elevator 1 can be a split-level elevator 1 or an ordinary elevator 1. An elevator 1 includes: a shaft 100, a machine room 200, a car 500 and an elevator rope release 600. The elevator rope release 600 is used to release the rope 620. The machine room 200 is located at the top of the shaft 100; the machine room 200 can be a mobile machine room 200 during the construction process, or it can be a permanent machine room 200 after the construction is completed. The shaft 100 can be a partial structure with a temporary roof during the construction process, or it can be a complete structure with a final roof after the construction is completed. The car 500 is arranged in the shaft 100 so as to be movable up and down by a lifting device 530; the lifting device 530 can include components such as guide rails and pulleys.

[0034] The rope 620 released by the elevator rope release device 600 can be a pulling wire rope used in the lifting device 530, or it can be a speed limiting wire rope used to release the speed limiter 400 in the speed limiting protection system. Figure 1 An embodiment of an elevator rope payout device 600 for paying out a hoisting wire rope is described.

[0035] The lifting device 530 includes a traction machine 531, a counterweight 532, a first lifting pulley 533, and a second lifting pulley 534. The traction machine 531 is located in the machine room 200, the second lifting pulley 534 is located on the top of the car 500, and the first lifting pulley 533 is located on top of the counterweight 532. When the skip elevator 1 jumps, the counterweight 532 can be fixed in the pit of the hoistway 100. The rope 620 released by the elevator rope release 600 passes around the first and second lifting pulleys 533, 534, and connects to the traction machine 531. After the rope is released, the end of the rope release 600 is fixed with a rope end connection device that acts like a rope end. The traction machine 531 then controls the raising and lowering of the car 500. It should be noted that the lifting and lowering of the car 500 is controlled by the traction machine 531, and the elevator rope release device 600 is only used to release the rope, and only bears the weight of the rope 620, and does not bear the weight of the car 500 or the counterweight 532.

[0036] During one operation, after construction of a certain floor is completed, the completed portion of the hoistway 100 is temporarily sealed, and a mobile machine room 200 is temporarily fixed at the top of the hoistway 100. The rope storage reel 610, first bracket 631, and second bracket 640 move upward with the machine room 200, increasing the height of the elevator car 500 and the required length of the rope 620. At this time, a certain length of the rope 620 can be paid out through the elevator rope payout 600. After the rope is paid out, the end of the elevator rope payout 600 is secured with a rope end termination device, which acts like a rope end, and the hoisting machine 531 is then used to control the raising and lowering of the elevator car 500.

[0037] It should be noted that if the machine room 200 is hoisted by m meters, the elevator rope payout device 600 pays out a d*m meter long rope 620. This means that the length of the rope 620 is d times the hoisting height of the machine room 200. This ratio d is calculated based on the elevator's hanging ratio. If the hanging ratio is 2, then d is 2, and the length of the paid-out rope is twice the hoisting distance of the machine room 200. If the hanging ratio is 4, then d is 4, and the length of the paid-out rope is four times the hoisting distance.

[0038] Please refer to Figure 2 , which is a partial structural diagram of an elevator 1 according to an embodiment of the present application. The elevator rope release 600 may or may not include a rope storage reel 610. In this embodiment, the elevator rope release 600 does not include a rope storage reel 610.

[0039] The elevator 1 includes a rope storage drum 610, and the elevator rope release device 600 includes: a rope 620, a holding device 630, a second bracket 640, a first rope winding wheel 651, a second rope winding wheel 652 and a driving device 660. The holding device 630 is arranged on one side of the rope storage drum 610. The holding device 630 includes a first bracket 631 and a plurality of rope pressure wheels 632. Each rope pressure wheel 632 is rotatable around its own axis and is arranged on the first bracket 631. Every two rope pressure wheels 632 are arranged at an interval, and a gap 633 is left between the two rope pressure wheels 632 for the rope 620 to pass through (please refer to Figure 3 ). Among them, the number of the rope pressing wheels 632 is an even number, which can be 2, 4, 6, 8, etc.

[0040] The first rope pulley 651 is rotatably mounted on the second bracket 640 about its own axis. The second rope pulley 652 is rotatably mounted on the second bracket 640 about its own axis. The driving device 660 is in transmission connection with the first rope pulley 651 and the second rope pulley 652, and is used to drive the first rope pulley 651 and the second rope pulley 652 to rotate. The driving device 660 may include components such as a motor, gears, or pulleys. In this embodiment, the driving device 660 is a motor, the main shaft of which is directly fixed to the second rope pulley 652. The motor drives the second rope pulley 652 to rotate, and the second rope pulley 652 drives the first rope pulley 651 to rotate synchronously through gear transmission or belt transmission.

[0041] Among them, the rope storage reel 610, the first bracket 631 and the second bracket 640 are all fixed to the machine room 200 by bolt connection, welding, etc.; one end of the rope 620 is connected to the rope storage reel 610 (stored in the rope storage reel 610), and the other end passes through the gap 633 and repeatedly passes around the first rope winding wheel 651 and the second rope winding wheel 652 at least twice, then passes around the first pulling wheel 533 and the second pulling wheel 534, and is connected to the traction machine 531.

[0042] It should be noted that, in addition to being secured to the machine room 200, the rope storage reel 610, first bracket 631, and second bracket 640 can also be secured to the sidewall of the hoistway 100 or the inner bottom surface of the hoistway 100. The elevator rope release device 600 is primarily used to release the rope and can be placed next to the rope storage reel 610. In another embodiment, the rope storage reel 610, first bracket 631, and second bracket 640 are all secured to the inner bottom surface (ground) of the hoistway 100 via bolts, welding, or other means.

[0043] Drive device 660 includes a worm 661, a worm wheel 662, and a drive motor 663. Worm wheel 662 meshes with worm 661. Drive motor 663 is a stepper motor. The main shaft of drive motor 663 is fixedly connected to worm 661 to drive worm 661 to rotate. Drive motor 663 can be fixed to machine room 200 via second bracket 640 or other brackets.

[0044] The driving device 660 further includes: a transmission assembly 670 (see Figure 3 ), the worm wheel 662, the first rope winding wheel 651 and the second rope winding wheel 652 are connected in a transmission manner so that the worm wheel 662 can drive the first rope winding wheel 651 and the second rope winding wheel 652 to rotate. The transmission component 670 can be implemented by belt drive or gear drive.

[0045] During one operation, elevator 1 is a leap-floor elevator. When elevator 1 leaps a floor, drive device 660 is first turned on, then hoisted to temporary machine room 200. After the hoisting is complete, drive device 660 is turned off, thereby smoothly releasing rope 620. If rope 620 is released too long, the excess rope 620 can be retracted by reversing drive device 660.

[0046] The portion of the rope 620 that has just been drawn out of the rope storage reel 610 is referred to as portion A, and the portion of the rope 620 that is suspended from the first and second rope reels 651, 652 is referred to as portion B. In this embodiment, the rope 620 is repeatedly wound at least twice by the first and second rope reels 651, 652, thereby increasing the wrap angle and enabling the force ratio between portion A and portion B of the rope 620 to reach 1:n. When the first rope reel 651 rotates, the force ratio between portion A and portion B of the rope 620 is less than 1:n. Therefore, when the first rope reel 651 is not rotating, portion A of the rope 620 only bears 1 / n+1 of the total force applied to portion B, where the total force applied to portion B includes the weight of the rope 620. Thus, when the elevator rope unwinder 600 is in operation, the rope 620 will not accelerate downward due to its own weight or cause the rope storage reel 610 to rotate uncontrollably.

[0047] It should be noted that the relationship between the number of rewinding turns and the force ratio between parts B and A is not an ideal 1:1 relationship. For example, if n turns are rewound, the force ratio will not be 1:n. During use, the user first determines a reasonable force ratio (1:n) based on the required load. The user then determines the specific number of rewinding turns required on the first and second rope reels 651, 652 based on the shapes of the upper rope grooves 653 of the first and second rope reels 651, 652.

[0048] At the same time, since the rope pressure wheel 632 produces a certain positive pressure on the rope 620, the holding device 630 produces a certain holding force on the rope 620, so that the holding force can offset the weight of the rope 620. In this way, when the elevator rope release 600 is running, the rope 620 will not accelerate downward due to its own weight.

[0049] In summary, in this embodiment, the rope 620 is compressed by the pressure rope wheel 632 in the retaining device 630 to generate a certain positive pressure, and the rope 620 is repeatedly wound by the first rope wheel 651 and the second rope wheel 652 to increase the wrap angle, thereby increasing the force ratio at both ends of the rope 620, so that the rope 620 can be wound more stably in the rope storage reel 610, and will not accelerate downward due to its own gravity or cause the rope storage reel 610 to rotate out of control.

[0050] Furthermore, this embodiment achieves smooth rope release simply by driving the first and second rope reels 651, 652 via the drive device 660. This eliminates the need to first draw a length of rope 620 from the rope storage reel 610. This makes operation simple and convenient, and prevents the rope 620 from becoming tangled, reducing safety hazards associated with the rope 620 becoming entangled with adjacent components. Furthermore, there is no need for workers to pull on the rope 620 to prevent it from sliding down, reducing operational risks and meeting operational standards. Furthermore, the elevator rope release device 600 occupies a small, unchanging footprint, facilitating the spatial layout of other components within the hoistway 100 and eliminating the need for a separate lifting device comprising multiple pulleys.

[0051] Furthermore, in this embodiment, the rope 620 is wound around the first rope winding wheel 651 and the second rope winding wheel 652 at the same time, thereby avoiding problems such as the rope 620 getting stuck in the rope winding wheel 620 or the rope 620 falling off the rope winding wheel 620 caused by only a single rope winding wheel 620.

[0052] In addition, this embodiment incorporates a worm gear 662 and worm screw 661 mechanism in the drive device 660. When releasing the rope, the drive motor 663 drives the worm screw 661 to rotate. This rotation of the worm screw 661 causes the worm gear 662 to rotate. The worm gear 662 drives the first and second rope winding wheels 651 and 652 through the transmission assembly 670. Due to the self-locking nature of the worm gear 662 and worm screw 661, the worm gear 662 rotates at a constant speed, and the rope 620 is also released at a constant speed. This further prevents the rope 620 from accelerating downward due to its own gravity or causing the rope storage reel 610 to rotate uncontrollably. When the rope is not being released, the drive motor 663 controls the worm screw 661 to stop rotating. Due to the self-locking nature of the worm gear 662 and worm screw 661, the first and second rope winding wheels 651 and 652 remain stationary, thus stopping the rope release. At the same time, this embodiment utilizes the self-locking principle of the worm wheel 662 and the worm 661, without increasing the resistance of the rope storage reel 610, thereby preventing the rope 620 stored in the rope storage reel 610 from being subjected to a large pulling force.

[0053] Please refer to Figure 3, which is a partial structural schematic diagram of an elevator rope release 600 shown in one embodiment of the present application. The transmission assembly 670 includes: a first rotating wheel 671 and a second rotating wheel 672. The first rotating wheel 671 is fixedly connected to the first rope winding wheel 651 by welding, integral molding, or using a common connecting shaft; the second rotating wheel 672, the second rope winding wheel 652, and the worm gear 662 are fixedly connected by welding, integral molding, or using a common connecting shaft. The first rope winding wheel 651 and the second rope winding wheel 652 are connected together by the first rotating wheel 671 and the second rotating wheel 672. The first rope winding wheel 651 and the second rope winding wheel 652 are each provided with at least one rope groove 653. The rope groove 653 is provided with one or more rope grooves, so as to accommodate the rope 620 and control the friction between the rope 620 and the rope groove 653.

[0054] In this embodiment, the first rotating wheel 671 and the second rotating wheel 672 are pulleys, and the first rotating wheel 671 and the second rotating wheel 672 are connected by a belt 677. Therefore, the first rotating wheel 671 and the second rotating wheel 672 rotate synchronously and in the same direction under the drive motor 663, thereby achieving synchronous and same-direction rotation of the first rope winding wheel 651 and the second rope winding wheel 652. In another embodiment, the first rotating wheel 671 and the second rotating wheel 672 are sprockets, and the first rotating wheel 671 and the second rotating wheel 672 are connected by a chain transmission.

[0055] The retaining device 630 further includes a plurality of dampers 634 and a plurality of rope-pressing blocks 635. Each rope-pressing wheel 632 is rotatably mounted on the first bracket 631 via a damper 634. The rope-pressing blocks 635 are mounted on the first bracket 631 via bolts or other means and are positioned toward the gap 633. A rope-pressing block 635 is provided on each side of a rope-pressing wheel 632.

[0056] Therefore, the damper 634 of this embodiment is a one-way damper 634. The damper 634 is installed to provide a certain reverse pulling force to the rope 620. Therefore, this embodiment further enhances the holding force of the retaining device 630 on the rope 620 through the resistance of the damper 634 and the pressure of the rope pressing block 635, so that the holding force can be used to offset the deadweight of the rope 620. In this way, when the rope releasing device is running, the rope 620 will not accelerate downward due to its own weight.

[0057] In addition, the elevator rope release device 600 first reduces the force on part A, so that the force on part A only accounts for a small part of the total force on the rope 620. At this time, as long as the reverse pulling force generated by the damper 634 is greater than the force on part A, the wire rope can be held and prevented from moving. When releasing the rope, as long as the driving force of the first rope wheel 651 is greater than the reverse pulling force generated by the damper 634, the rope 620 can be moved downward, thereby performing the rope releasing operation.

[0058] And if the positive pressure generated by the compression of the rope wheel 632 makes the friction between the rope wheel 632 and the rope 620 greater than the resistance of the damper 634, then when the rope 620 is subjected to a pulling force greater than the resistance of the damper 634, the rope 620 will only be released through the rotation of the first rope wheel 651, which is conducive to the smooth control of the rope release.

[0059] Please also refer to Figure 2 and Figure 3 When the first rope winding pulley 651 is not rotating, section A of rope 620 only bears 1 / n+1 of the total force exerted on section B. When the first rope winding pulley 651 is rotating, the force ratio between sections A and B of rope 620 will be less than 1:n. The user can calculate the force exerted on section A of rope 620 by how many times 1 / n+1 the force exerted on section A of rope 620 is, and select an appropriate damper 634 based on actual conditions. For example, assuming the force exerted on section A of rope 620 is a times 1 / n+1, or a(1 / n+1), then the resistance of damper 634 should be maintained greater than the total force exerted on section A of rope 620. In other words, a damper 634 with a resistance greater than a(1 / n+1) should be selected.

[0060] Please refer to Figure 4 , which is a partial structural diagram of an elevator rope release device 600 according to one embodiment of the present application. The transmission assembly 670 further includes a first connecting shaft 674 and a second connecting shaft 675. Both the first connecting shaft 674 and the second connecting shaft 675 are rotatably mounted on the second bracket 640. The first rotating wheel 671 and the first rope winding wheel 651 are both secured to the first connecting shaft 674 via a key connection or other means. The worm gear 662, the second rotating wheel 672, and the second rope winding wheel 652 are also secured to the second connecting shaft 675 via a key connection or other means.

[0061] The transmission assembly 670 further includes an intermediate gear 673 and a third connecting shaft 676. The intermediate gear 673 is rotatably mounted on the third connecting shaft 676, and the third connecting shaft 676 is fixed to the second bracket 640. The first rotating wheel 671 and the second rotating wheel 672 are both gears. The intermediate gear 673 meshes with the first rotating wheel 671 and the second rotating wheel 672, respectively, so that the first rotating wheel 671 and the second rotating wheel 672 rotate synchronously and in the same direction under the drive motor 663, thereby achieving synchronous and same-direction rotation of the first rope winding wheel 651 and the second rope winding wheel 652.

[0062] Please refer to Figure 5, which is a partial structural diagram of an elevator rope release device 600 according to one embodiment of the present application. In this embodiment, a worm gear 662 is fixed to a third connecting shaft 676 via a key connection or other means and is fixedly connected to an intermediate gear 673 via the third connecting shaft 676. The worm gear 662 drives the intermediate gear 673 to rotate via the third connecting shaft 676. This, in turn, causes the first rotating wheel 671 and the second rotating wheel 672 to rotate synchronously and in the same direction, thereby achieving synchronous and co-directional rotation of the first and second rope winding wheels 651 and 652.

[0063] Please refer to Figure 6 , which is a schematic diagram of the internal structure of the elevator 1 shown in an embodiment of the present application. Figure 6 An embodiment of an elevator rope payout device 600 for paying out a speed-limiting steel rope is described.

[0064] An elevator 1 further includes: a tensioning wheel 300 and a speed limiter 400, and an elevator rope release device 600 can be Figures 1 to 3 In the structure of any embodiment, the tensioning wheel 300 is arranged at the bottom end of the hoistway 100; the speed limiter 400 has a speed limiter wheel 410, and the speed limiter 400 is arranged in the machine room 200; the car 500 is provided with a safety clamp assembly 510 and a pulling device 520.

[0065] In this embodiment, the rope storage drum 610, the first bracket 631 and the second bracket 640 are all fixed to the top of the car 500 by bolt connection or bracket fixing; wherein, the rope 620 passes around the speed governor wheel 410 and the tensioning wheel 300 and is connected to the pulling device 520 to trigger the action of the safety gear assembly 510. It should be noted that Figure 6 Only the first rope winding wheel 651 is shown, and the second rope winding wheel 652 is not shown.

[0066] The rope winding 620 can be a two-section structure, namely a main rope segment 621 and an auxiliary rope segment 622. One end of the main rope segment 621 is connected to the lifting fixture 623, and the other end is connected to the rope storage reel 610 after passing through the speed limiter wheel 410 and the tensioning wheel 300 in sequence; the auxiliary rope segment 622 can be detachably connected to the lifting fixture 623 and the main rope segment 621; wherein, the main rope segment 621, the auxiliary rope segment 622 and the lifting fixture 623 form a closed loop.

[0067] During one operation, elevator 1 is a split-level elevator. After construction reaches a certain floor, the completed portion of hoistway 100 is temporarily sealed, and a mobile machine room 200 is temporarily secured at the top of hoistway 100. As the machine room 200 moves upward, the speed governor 400 increases the distance between the speed governor wheel 410 and the tensioning wheel 300, increasing the required closed loop formed by the rope 620 and the required length of the rope 620. At this point, the user stops car 500 at a preset position in hoistway 100, pays out a certain amount of rope 620 from the rope storage reel 610, and then re-secures the rope 620, thereby increasing the closed loop.

[0068] The rope 620, the tensioning pulley 300, the speed limiter 400, the safety clamp assembly 510 and the lifting device 520 and other components can together form the speed limit protection system of the elevator 1. If the car 500 exceeds the speed, the speed limiter 400 will immediately operate, triggering the rope clamping device in the speed limit protection system to clamp the rope 620; when the car 500 descends, the rope 620 can pull the pull rod of the lifting device 520 through the lifting fixture 623, and the pull rod triggers the operation of the safety clamp assembly 510, so that the safety clamp assembly 510 generates friction on the guide rail of the elevator 1, and the car 500 is quickly braked on the guide rail to stop moving.

[0069] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0070] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An elevator rope release device, characterized in that: include: Rope winding; The holding device includes a first bracket and a plurality of rope pressing wheels, each rope pressing wheel is rotatable around its own axis and is arranged on the first bracket, and a gap is left between each two rope pressing wheels for the rope to pass through; Second bracket; a first rope winding pulley, rotatably arranged on the second bracket about its own axis; a second rope winding pulley, rotatably mounted on the second bracket about its own axis; as well as A driving device, connected to the first rope winding wheel and the second rope winding wheel, for driving the first rope winding wheel and the second rope winding wheel to rotate; One end of the rope is connected to the rope storage drum, and the other end passes through the gap and repeatedly passes around the first rope winding wheel and the second rope winding wheel for at least two turns.

2. The elevator rope release device according to claim 1, characterized in that: The driving device comprises: worm; a worm wheel meshing with the worm; a driving motor, connected to the worm gear, for driving the worm gear to rotate; and The transmission assembly transmits and connects the worm wheel, the first rope winding wheel and the second rope winding wheel, so that the worm wheel can drive the first rope winding wheel and the second rope winding wheel to rotate.

3. The elevator rope release device according to claim 2, characterized in that: The transmission assembly comprises: a first rotating wheel, fixedly connected to the first rope winding wheel; and a second rotating wheel, fixedly connected to the second rope winding wheel; Wherein, the first rope winding wheel and the second rope winding wheel are connected together through the first rotating wheel and the second rotating wheel.

4. The elevator rope release device according to claim 3, characterized in that: The transmission assembly further comprises: an intermediate gear rotatable about its own axis and arranged on the second bracket; Wherein, the first rotating wheel and the second rotating wheel are both gears, and the intermediate gear is respectively engaged with the first rotating wheel and the second rotating wheel; the worm gear is fixedly connected to the second rope winding wheel or the intermediate gear.

5. The elevator rope release device according to claim 3, characterized in that: The worm wheel is fixedly connected to the second rope winding wheel; the first rotating wheel is connected to the second rotating wheel through a belt or chain transmission.

6. The elevator rope release device according to claim 3, characterized in that: The transmission assembly further comprises: A first connecting shaft is rotatably mounted on the second bracket about its own axis, and the first rotating wheel and the first rope winding wheel are both fixed to the first connecting shaft; and The second connecting shaft is rotatably arranged on the second bracket around its own axis, and the worm gear, the second rotating wheel and the second rope winding wheel are all fixed to the second connecting shaft.

7. The elevator rope release device according to any one of claims 1 to 6, characterized in that: The holding device further comprises: A plurality of dampers are provided, and each rope pressing wheel is rotatably arranged on the first bracket via a damper.

8. The elevator rope release device according to claim 7, characterized in that: The holding device further comprises: A plurality of rope pressing blocks are arranged on the first bracket and are arranged toward the gap.

9. An elevator, characterized in that: include: Well; Rope storage reel; a machine room, located at the top of the shaft; a car movably disposed in the hoistway; a lifting device connected to the car and used to drive the car to rise and fall, comprising a traction machine, a counterweight, a first lifting wheel, and a second lifting wheel, wherein the traction machine is arranged in the machine room, the first lifting wheel is arranged on the top of the counterweight, and the second lifting wheel is arranged on the top of the car; and An elevator rope release device, which is the elevator rope release device according to any one of claims 1 to 8, The rope storage reel, the first bracket and the second bracket are arranged in the machine room or the shaft; the rope is wound around the first pulling wheel and the second pulling wheel and is connected to the traction machine for pulling the car.

10. An elevator, characterized in that: include: Well; Rope storage reel; a machine room, located at the top of the shaft; a tensioning wheel, arranged at the bottom end of the shaft; a speed governor having a speed governor wheel, wherein the speed governor is arranged in the machine room; A car is movably disposed in the hoistway, and a safety gear assembly and a lifting device are provided on the car; as well as An elevator rope release device, which is the elevator rope release device according to any one of claims 1 to 8; Wherein, the rope storage reel, the first bracket and the second bracket are all arranged on the car; The rope passes around the speed limiter wheel and the tensioning wheel and is connected to the pulling device to trigger the action of the safety clamp assembly.

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