CN210342620U

CN210342620U - Trackless alternative inner climbing type double-layer derrick structure of elevator shaft

Info

Publication number: CN210342620U
Application number: CN201921005128.1U
Authority: CN
Inventors: 鞠学伟; 方玉先; 黄翔; 仇星
Original assignee: Unibuit Construction Investment Co ltd
Current assignee: Unibuit Construction Investment Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-17
Anticipated expiration: 2029-06-27

Abstract

The utility model relates to a double-deck derrick structure of formula of climbing in elevator well trackless in turn belongs to the room and builds construction equipment field, and it includes the elevator well, and its technical essential is: still including set up in inside well cage of elevator well and the elevating system who is used for driving the vertical reciprocating of well cage along elevator well inner wall, the well cage including can with elevator well fixed connection's upper strata frame cover and lower floor's cage, upper strata frame cover is pegged graft with the vertical slip of lower floor's cage, elevating system drives upper strata frame cover and lower floor's cage removal in turn. The utility model provides a pair of double-deck derrick structure of formula of climbing in elevator well trackless in turn makes the well cage rise the effect face on required construction layer along with the construction demand under elevating system's effect through setting up the well cage, has solved elevator well bottom steel-pipe material because of the long-term ponding of elevator well and has been corroded the problem, has reduced the potential safety hazard.

Description

Trackless alternative inner climbing type double-layer derrick structure of elevator shaft

Technical Field

The utility model belongs to the technical field of construction equipment is built in the room and specifically relates to a double-deck derrick structure of climbing in elevator well trackless in turn is related to.

Background

At present, in a high-rise building, a frame shear wall structure and a frame core tube structure occupy higher specific gravity. One common feature of these buildings is that the elevator hoistway uses a reinforced concrete shear wall structure to resist the horizontal shear of the structure while meeting the requirements of the building for elevator installation and other equipment.

In the construction process of the elevator shaft structure, the middle part of the elevator shaft structure is not provided with an interlayer from a basement to a roof, and scaffolds are required to be used when templates in the elevator shaft structure are erected and dismantled. Traditional scaffold frame adopts steel pipe fastener to take the top layer from the basement always, because elevator well bottom is in the ponding state for a long time in the work progress, makes scaffold frame steel pipe bottom corrosion easily to reduce the effective cross-section of bottom steel pipe, weakened its bearing capacity, thereby caused support body poor stability, the potential safety hazard is big.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elevator well trackless is climbed double-deck derrick structure in turn makes the well cage rise the effect face on required construction layer along with the construction demand under elevating system's effect through setting up the well cage, has solved elevator well bottom steel-pipe material because of the long-term ponding of elevator well and has been corroded the problem, has reduced the potential safety hazard.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an elevator well trackless is climbed double-deck derrick structure in turn, includes the elevator well, still including set up in inside well cage of elevator well and the elevating system who is used for driving the vertical reciprocating of well cage along elevator well inner wall, the well cage including can with elevator well fixed connection's upper strata frame cover and lower floor's cage, upper strata frame cover is pegged graft with the vertical slip of lower floor's cage, elevating system drives upper strata frame cover and lower floor's cage removal in turn.

By adopting the technical scheme, the shaft cage is arranged in the elevator shaft and the lifting mechanism is arranged, so that the shaft cage can move up and down along the inner wall of the elevator shaft under the action of the lifting mechanism along with construction requirements in the construction process, construction requirements are met, and meanwhile, the traditional scaffold is avoided being built, so that the problem that steel pipe materials at the bottom of the elevator shaft are corroded due to long-term water accumulation of the elevator shaft is solved; through setting up upper frame cover and lower floor's cage slip grafting to make elevating system drive upper frame cover and lower floor's cage alternating movement, realize the well cage in the inside lift of elevator well, solved the inside steel pipe material of elevator well and piled up deformation, the corrosion scheduling problem that the extrusion caused for a long time, reduced the potential safety hazard.

The utility model discloses further set up to: the elevator well inner wall is equipped with a plurality of groups of reserved holes along its direction of height interval, the well cage is equipped with the safe self-lock device that can insert in the reserved hole all around, the interval in adjacent two sets of reserved holes is all more than or equal to the height of upper frame cover and lower floor's cage.

Through adopting above-mentioned technical scheme, through setting up the reservation hole on elevator well wall, utilize safe self-lock device to replace orbital operation, avoid laying the track in the installation, set up the height of upper frame cover and lower floor's cage, guarantee that the displacement of upper frame cover and lower floor's cage can satisfy under the restriction of reservation hole.

The utility model discloses further set up to: safety self-lock device is including setting up with four last self-lock mechanism of upper frame cover top four corners department and setting up with four lower self-lock mechanism of lower floor cage top four corners department, go up self-lock mechanism and self-lock mechanism down and all include with well cage fixed connection's sleeve pipe with slide and set up in the inside from the locking shaft of sleeve pipe, the reservation hole includes the last reservation hole of pegging graft with last self-lock mechanism and is used for pegging graft lower self-lock mechanism's lower reservation hole.

By adopting the technical scheme, the self-locking mechanism and the lower self-locking mechanism are respectively arranged at the tops of the upper-layer cage sleeve and the lower-layer cage, so that when the safety self-locking device is used for fixing the well cage and the elevator shaft, the movement of the upper-layer cage sleeve or the lower-layer cage cannot be influenced.

The utility model discloses further set up to: the lifting mechanism comprises a vertically arranged screw rod, one end of the screw rod is rotatably connected with the center of the top of the lower cage, the screw rod penetrates through the top of the upper cage sleeve, and a lifting machine for driving the screw rod to rotate is fixedly arranged at the top of the upper cage sleeve.

Through adopting above-mentioned technical scheme, rotate through lower floor's cage and lead screw and be connected, the lead screw runs through upper frame cover to make upper frame cover and lower floor's cage pass through elevating system and continue to connect, and make the lead screw realize the lift of whole well cage under the effect of lifting machine.

The utility model discloses further set up to: the lifting machine comprises a worm wheel in threaded connection with the outer side of the screw rod, the worm wheel is meshed with a worm, a motor and a hand wheel are arranged at two ends of the worm respectively, and the motor is fixedly connected with the top of the upper-layer frame sleeve.

Through adopting above-mentioned technical scheme, through setting up turbine and worm, when the worm drove the turbine and rotates, the turbine drove the lead screw and rotates to realize the rising or the decline of well cage, through setting up motor and hand wheel, also can guarantee the work of lifting machine under the condition that the motor does not have the power.

The utility model discloses further set up to: and an elastic element is fixedly arranged at one end of the self-locking shaft, which is far away from the reserved hole, and when the elastic element is in a natural state, the self-locking shaft is inserted into the reserved hole.

Through adopting above-mentioned technical scheme, through setting up elastic element, make the auto-lock axle keep the state of extrapolating under elastic element's elastic action to when avoiding the staff to be under construction to the elevator well on the well cage, lead to the auto-lock axle to break away from in reserving the hole because of factors such as vibration, guarantee the locking effect of safe self-lock device to the well cage.

The utility model discloses further set up to: the self-locking shaft is equipped with to act as go-between from reservation hole one end, the one end of keeping away from the self-locking shaft of acting as go-between runs through the sleeve pipe and is equipped with the fixed hook, the fixed hook can be with well cage hook.

Through adopting above-mentioned technical scheme, act as go-between through the setting, conveniently will pull back the auto-lock axle when the auto-lock axle need withdraw from the reservation hole, set up the fixed hook simultaneously and not only conveniently fix acting as go-between, the person of facilitating the use pulling simultaneously acts as go-between.

The utility model discloses further set up to: be equipped with the cat ladder between the inside upper and lower of lower floor's cage, through cat ladder constructor can follow lower floor's cage bottom and climb to upper rack cover top.

Through adopting above-mentioned technical scheme, through set up the cat ladder in lower floor's cage, make things convenient for the climbing of staff between upper frame cover and lower floor's cage.

To sum up, the utility model discloses a beneficial technological effect does: the shaft cage is arranged in the elevator shaft, the lifting mechanism is arranged to drive the shaft cage to vertically move up and down along the inner wall of the elevator shaft, and the lifting of the shaft cage is used for replacing the building of a traditional scaffold, so that potential safety hazards caused by the problems of accumulation deformation, corrosion and the like of steel pipe materials in the elevator shaft are solved; the cage is arranged into an upper-layer cage sleeve and a lower-layer cage by arranging a reserved hole in an elevator shaft, and the upper-layer cage sleeve and the lower-layer cage are alternately moved up or down under the driving of a lifting mechanism under the matching of a safety self-locking device and the reserved hole, so that the cage can move trackless in the elevator shaft; setting; the elastic element is arranged between the self-locking shaft and the pipe sleeve, and the elastic potential energy of the elastic element is utilized, so that the self-locking shaft is kept in an outward pushing state, the self-locking shaft is prevented from being separated from a reserved hole due to vibration or transverse movement and the like generated in the using process, and the lifting safety of the well cage is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a partial cross-sectional view of the present invention, primarily illustrating the installation of a cage inside an elevator hoistway;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is a partial cross-sectional view of the present invention, mainly showing the components of the lower self-locking mechanism;

fig. 5 is a partially enlarged schematic view of a portion B in fig. 2.

In the figure, 1, an elevator shaft; 11. reserving a hole; 111. reserving a hole; 112. reserving a hole at the lower part; 2. a well cage; 21. an upper frame sleeve; 22. a lower cage frame; 221. climbing a ladder; 3. a lifting mechanism; 31. a screw rod; 32. a flange; 33. a hoist; 331. a turbine; 332. a worm; 333. a hand wheel; 334. a motor; 4. a safety self-locking device; 41. an upper self-locking mechanism; 42. a lower self-locking mechanism; 421. pipe sleeve; 422. a self-locking shaft; 423. an elastic element; 424. a pull wire; 425. a fixed hook; 426. a pull ring; 427. and a ball.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a formula double-deck derrick structure climbs in elevator well trackless in turn, including elevator well 1 and a plurality of groups reservation hole 11 that set up along 1 inner wall interval of elevator well, for making things convenient for constructor to be under construction to elevator well 1, still including setting up in 1 inside well cage 2 of elevator well and drive well cage 2 and can see the vertical elevating system 3 that reciprocates of inner wall along the elevator. Wherein well cage 2 includes upper frame cover 21 and lower floor cage 22, and upper frame cover 21 pegs graft with the vertical slip of lower floor cage 22, and elevating system 3 can drive upper frame cover 21 and lower floor cage 22 removal in turn, utilizes well cage 2 to guarantee that constructor is under construction to 1 inside of elevator well in 1 inside rising and descending of elevator well, reduces the scaffold and sets up required steel-pipe material.

Referring to fig. 2 and 3, the lifting mechanism 3 includes a vertically disposed screw rod 31 and a flange 32 fixedly disposed at the center of the top of the lower cage 22, one end of the screw rod 31 is rotatably connected to the flange 32, the screw rod 31 penetrates through the top of the upper cage 21, and a lifter 33 for driving the screw rod 31 to rotate is fixedly disposed at the top of the upper cage 21. The lifting machine 33 comprises a worm wheel 331 and a worm 332, wherein the worm wheel 331 is in threaded connection with the outer side of the screw rod 31, the worm 332 is meshed with the worm wheel 331, and the worm wheel 331 and the worm 332 are both in rotating connection with the top of the upper frame sleeve 21. The two ends of the worm 332 are respectively provided with a motor 334 and a hand wheel 333, wherein the body of the motor 334 is fixedly connected with the top of the upper frame sleeve 21, and through the arrangement of the hand wheel 333, under the condition that the motor 334 is not provided with a power supply, the hand wheel 333 can be manually rotated by constructors, so that the normal work of the hoister 33 can be ensured.

Referring to fig. 2 and 4, for guaranteeing that the shaft cage 2 can go up and down smoothly under the effect of elevating system 3 and can keep stable with elevator well 1 after its goes up and down to set up, shaft cage 2 is equipped with the safe self-lock device 4 that can insert 1 inside reserved hole 11 of elevator well all around, utilize the grafting of safe self-lock device 4 in reserved hole 11, thereby realize that the fixed of shaft cage 2 in elevator well 1 sets up, simultaneously through setting up reserved hole 11 on 1 wall of elevator well, utilize safe self-lock device 4 to replace orbital operation, avoid laying the track in the installation. The safety self-locking device 4 comprises four upper self-locking mechanisms 41 arranged at four corners of the top of the upper frame sleeve 21 and four lower self-locking mechanisms 42 arranged at four corners of the top of the lower cage 22, and each of the upper self-locking mechanisms 41 and the lower self-locking mechanisms 42 comprises a sleeve fixedly connected with the well cage 2 and a self-locking shaft 422 slidably arranged inside the sleeve 421. Referring to fig. 5, the reserved hole 11 includes an upper reserved hole 111 for inserting the upper self-locking mechanism 41 and a lower reserved hole 112 for inserting the lower self-locking mechanism 42.

Referring to fig. 2 and 4, when the self-locking shaft 422 is inserted into the reserved hole 11, the corresponding upper frame 21 and/or lower frame 22 are kept fixed under the clamping action of the self-locking shaft 422, because in the construction process, when a constructor constructs on the well cage 2, the well cage 2 is easy to vibrate or shake, and the like, in order to avoid the self-locking shaft 422 from being separated from the reserved hole 11 in the construction process, and thus causing accidents, an elastic element 423 is fixedly arranged at one end of the self-locking shaft 422, which is far away from the reserved hole 11, one end of the elastic element 423, which is far away from the self-locking shaft 422, is fixedly connected with the inner wall of the casing, the elastic element 423 adopts a compression spring, when the elastic element 423 is in a natural state, the self-locking shaft 422 is kept in an outward-pushed state under the elastic action of the elastic element 423, and the self-locking shaft 422 is inserted into the reserved hole 11, so as to ensure the locking action of.

Referring to fig. 2 and 4, since the well cage 2 needs to withdraw the self-locking shaft 422 from the reserved hole 11 in the lifting process, so as to ensure the normal movement of the well cage 2, in order to conveniently pull the self-locking shaft 422 back into the pipe sleeve 421, one end of the self-locking shaft 422, which is far away from the reserved hole 11, is provided with a pull wire 424, one end of the pull wire 424, which is far away from the self-locking shaft 422, penetrates through the pipe sleeve 421 and is provided with a fixing hook 425, the fixing hook 425 can be hooked with the well cage 2, and when the self-locking shaft 422 is withdrawn from the reserved hole 11, the fixing hook 425 is hooked with the well cage 2. In the embodiment, the pull wire 424 is a steel wire strong rope, a pull ring 426 is arranged between the self-locking shaft 422 and the pull wire 424, and the pull ring 426 and the end part of the self-locking shaft 422 are welded by a welding machine, so that the connection between the pull wire 424 and the self-locking shaft 422 is more stable; meanwhile, to prevent the pull ring 426 from affecting the contraction of the elastic element 423, the pull ring 426 is disposed inside the elastic element 423.

Referring to fig. 2 and 4, because the connection between the lower cage 22 and the upper cage 21 is only connected through the screw rod 31, in order to ensure that the lower cage 22 can achieve the purpose of safe self-locking when an accident occurs in the lifting process, when the lower cage 22 ascends or descends, and the self-locking shaft 422 on the lower cage 22 is not aligned with the reserved hole 11, the corresponding fixing hook 425 is loosened to enable the self-locking shaft 422 to be in an outward-opening natural state, and the self-locking shaft 422 naturally props against the inner wall of the elevator shaft 1. For making the lower cage 22 more smooth in the lifting process, the lower self-locking mechanism 42 further comprises a ball 427 rotatably embedded in one end of the self-locking shaft 422 away from the elastic element 423, and when the self-locking shaft 422 is abutted against the inner wall of the elevator shaft 1, the rolling performance of the ball 427 is utilized to reduce the friction between the self-locking shaft 422 and the wall surface.

Referring to fig. 2, in order to facilitate a constructor to construct the inner wall of the elevator shaft 1 in the shaft cage 2, the height of the lower cage 22 is equal to the floor height of the building, so that the constructor has enough space to construct in the lower cage 22; meanwhile, because the upper-layer cage frame 21 is inserted into the lower-layer cage frame 22, the height of the upper-layer cage frame 21 needs to be greater than that of the lower-layer cage frame 22. In order to ensure that the well cage 2 can be locked in the two adjacent groups of reserved holes 11 under the action of the lifting mechanism 3, the heights of the upper-layer cage sleeve 21 and the lower-layer cage 22 are both larger than the distance between the two adjacent groups of reserved holes 11. Referring to fig. 5, since the well cage 2 moves up and down under the driving of the lifting mechanism 3, the length of the screw rod 31 is greater than the distance between two adjacent reserved holes 11, so that when the screw rod 31 rotates, the upper-layer cage sleeve 21 can be locked in two adjacent upper reserved holes 111, and the lower-layer cage 22 can be locked in two adjacent lower reserved holes 112.

Referring to fig. 2, in practical application, because lower floor's cage 22 is equipped with the pole setting all around, for convenient construction, lay the footboard at the top of upper frame cover 21 usually and make things convenient for constructor to carry out the structure construction, the footboard is laid as structural defect repair only to use in lower floor's cage 22's bottom, guarantees the effect and the efficiency of construction. For making things convenient for the constructor to scramble between lower floor's cage 22 and upper cage cover 21, be equipped with cat ladder 221 between the lower floor in lower floor's cage 22 is inside, when the top of upper cage cover 21 and lower floor's cage 22 were close to each other, can follow lower floor's cage 22 bottom through cat ladder 221 constructor and climb to upper cage cover 21 top.

The implementation process of the embodiment is as follows: when the well cage 2 needs to be lifted, the self-locking shafts 422 of the lower-layer cage 22 are bounced into the corresponding reserved holes 11 to fix the lower-layer cage 22, then the pull wires 424 corresponding to the self-locking shafts 422 of the upper-layer cage sleeve 21 are pulled, the fixing hooks 425 on the pull wires 424 are hooked with the well cage 2, the self-locking shafts 422 are separated from the upper reserved holes 111, the remaining three self-locking shafts 422 are all retracted in sequence, and at the moment, the upper-layer cage sleeve 21 is supported by the screw rod 31 of the lifting mechanism 3. The hoisting machine 33 is started, so that the screw rod 31 rotates under the action of the hoisting machine 33, and when the self-locking shaft 422 of the upper-layer frame is lifted to the upper reserved hole 111 of the upper layer, the self-locking shaft 422 is released, so that the hole 11 can be reserved smoothly by the self-locking shaft 422, and the upper-layer frame sleeve 21 is fixed. Starting the elevator 33 to raise the lower cage 22 by about one centimeter, so that the self-locking shafts 422 on the lower cage 22 are raised slightly and no longer bear the weight of the upper cage sleeve 21, instead, the lower cage 22 is loaded by the screw rod 31, then the self-locking shafts 422 on the lower cage 22 are all retracted in the same way to suspend the lower cage 22, starting the elevator 33, when the self-locking shafts 422 on the lower cage 22 are raised by a distance higher than the upper reserved hole 111, the four self-locking shafts 422 on the lower cage 22 are unlocked to make the balls 427 at the end part thereof abut against the inner wall of the elevator shaft 1, at this time, the self-locking shafts 422 are in an outward-opening natural state, the self-locking shafts 422 naturally prop against the wall surface, when the lower cage 22 is in the operation process and accidentally falls down, the self-locking shafts 422 can timely pop up and clamp the reserved hole 11 when encountering the reserved hole 11 on the lower wall surface, so as to achieve the purpose of safe self-locking, and the self-locking can be achieved when the self-locking shafts 422 of the lower cage 22 are lifted to the lower reserved hole 112 on the upper When the cage is in use, the self-locking shaft 422 automatically slides into the lower reserved hole 112, and the lower cage 22 is fixed. The above-described operations are circulated so as to achieve the lifting of the cage 2 in the elevator shaft 1.

When the well cage 2 needs to descend, before the cage falls, whether the four self-locking shafts 422 of the upper-layer sleeve frame are completely ejected into the reserved hole 11 or not is checked. Pulling the pull wire 424 corresponding to the self-locking shaft 422 of the lower frame sleeve, enabling the fixing hook 425 on the pull wire 424 to be hooked with the well cage, enabling the self-locking shaft 422 to be separated from the lower reserved hole 112, and sequentially collecting all the remaining three self-locking shafts 422. Starting the hoisting machine 33, when the self-locking shaft 422 on the lower cage 22 is no longer aligned with the lower reserved hole 112, the self-locking shaft 422 at four positions on the lower cage 22 is unlocked, the ball 427 at the end part of the self-locking shaft is abutted to the inner wall of the elevator shaft 1, at the moment, the self-locking shaft 422 is in an outward-expanding natural state, the self-locking shaft 422 naturally props against the wall surface, when the lower cage 22 is in the operation process and accidentally drops, and the self-locking shaft 422 meets the reserved hole 11 on the lower wall surface, the reserved hole 11 can be timely popped up and clamped, and the purpose of safe self-locking is achieved. When the self-locking shaft 422 of the lower cage 22 descends to the next layer close to the upper reserved hole 111 under the action of the lifting mechanism 3, the self-locking shaft 422 is retracted to avoid being scratched into the upper reserved hole 111, when the self-locking shaft 422 is basically aligned to the lower reserved hole 112 of the next layer, the pull wire 424 is loosened to pop out the self-locking shaft 422, and at the moment, the lower cage 22 is fixed. The self-locking shafts 422 on the upper frame sleeve 21 are all retracted, then the elevator 33 is started again, so that the upper frame sleeve 21 moves downwards, the self-locking shafts 422 of the upper frame sleeve 21 descend to the inner part of the upper reserved hole 111 of the next layer, the self-locking shafts 422 are inserted into the upper reserved hole 111, and at the moment, the upper frame sleeve 21 is fixed. The above steps are sequentially circulated to realize the descending of the well cage 2.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a double-deck derrick structure of formula of climbing in elevator well trackless in turn, includes elevator well (1), its characterized in that: still including set up in elevator well (1) inside well cage (2) with be used for driving elevator well cage (2) along elevator well (1) inner wall vertical elevating system (3) that reciprocate, well cage (2) including can with elevator well (1) fixed connection's upper rack cover (21) and lower floor's cage (22), upper rack cover (21) is pegged graft with lower floor's cage (22) vertical slip, elevating system (3) drive upper rack cover (21) and lower floor's cage (22) removal in turn.

2. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 1, characterized in that: elevator well (1) inner wall is equipped with a plurality of groups along its direction of height interval and reserves hole (11), well cage (2) are equipped with safety self-lock device (4) that can insert in reserving hole (11) all around, the interval of highly all being greater than or equal to adjacent two sets of reservation holes (11) of upper frame cover (21) and lower floor cage (22).

3. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 2, characterized in that: safety self-locking device (4) including set up with upper frame cover (21) top four corners four last self-locking mechanism (41) and set up with lower floor cage (22) top four corners four lower self-locking mechanism (42), go up self-locking mechanism (41) and lower self-locking mechanism (42) and all include with well cage (2) fixed connection's sleeve pipe and slide and set up in the inside self-locking axle (422) of sleeve pipe, reserve hole (11) include with last self-locking mechanism (41) the last hole of reserving (111) of pegging graft and be used for pegging graft lower hole of reserving (112) of self-locking mechanism (42).

4. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 1, characterized in that: elevating system (3) are including lead screw (31) of vertical setting, the one end and the rotation of lower floor cage (22) top center of lead screw (31) are connected, the top of upper frame cover (21) is run through in lead screw (31), just the fixed lifting machine (33) that are equipped with drive lead screw (31) pivoted in top of upper frame cover (21).

5. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 4, wherein: the lifting machine (33) comprises a turbine (331) which is in threaded connection with the outer side of the screw rod (31), the turbine (331) is meshed with a worm (332), two ends of the worm (332) are respectively provided with a motor (334) and a hand wheel (333), and the motor (334) is fixedly connected with the top of the upper-layer frame sleeve (21).

6. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 3, wherein: the one end that self-locking axle (422) kept away from preformed hole (11) is fixed and is equipped with elastic element (423), when elastic element (423) was in the natural state, self-locking axle (422) inserted in preformed hole (11).

7. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 6, wherein: from locking axle (422) deviate from reserved hole (11) one end and be equipped with acting as go-between (424), the sleeve pipe is run through and be equipped with fixed hook (425) in the one end that acting as go-between (424) kept away from locking axle (422), fixed hook (425) can be with well cage (2) hook.

8. The elevator shaft trackless alternate inward-climbing double-layer derrick structure of claim 1, characterized in that: be equipped with cat ladder (221) between about lower floor cage (22) is inside, through cat ladder (221) constructor can follow lower floor cage (22) bottom and climb to upper frame cover (21) top.