Construction platform for elevator shafts

Abstract

The application discloses a construction platform for an elevator shaft and belongs to the technical field of elevator shaft construction devices, which comprises fixed mechanisms symmetrically installed on both sides of a door opening of an elevator shaft, wherein the bottom end of each fixed mechanism is provided with a self-locking adjustable inclined support plate arranged in an inclined manner, and the other side of each fixed mechanism is provided with an adjustable support mechanism; a horizontal support plate is arranged on the adjustable support mechanism and the self-locking adjustable inclined support plate; a construction platform is installed on the horizontal support plate; the self-locking adjustable inclined support plate comprises a rotating support, an adjustable support plate and a self-locking assembly; the rotating support is fixedly arranged at the bottom end of the fixed mechanism; and the adjustable support plate comprises a fixed support plate and an outer sleeve plate slidably sleeved on the outer side of the fixed support plate. The construction platform for the elevator shaft can adjust the height of the construction platform at will, is convenient to keep horizontal, and is easy to operate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of elevator shaft construction devices, and particularly relates to a construction platform for an elevator shaft. BACKGROUND

[0002] In the modern construction industry, high-rise buildings are more and more common, and elevators have become an indispensable part of high-rise buildings. An elevator shaft is a passageway that penetrates up and down. During the construction process, the elevator shaft is high-altitude work. When the staff is working, an operating platform needs to be erected in the shaft to facilitate the construction operation of the staff in the shaft.

[0003] The traditional method is to erect a fastener type steel pipe scaffold in the elevator shaft. The sealing protection work of this method cannot be protected in place in time due to the existence of the operation frame, which brings hidden dangers to safety production. In addition to the scaffold type construction platform, a tripod type construction platform is more commonly used in the prior art. The platform is positioned by abutting the bottom against the edge of the elevator shaft door opening. When the staff uses it, the height of the platform cannot be adjusted, and the demand of different height workstations cannot be met. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the application provides a construction platform for an elevator shaft, which can arbitrarily adjust the height of the construction platform and is convenient for keeping the construction platform horizontal and easy to operate.

[0005] The technical scheme adopted by the application is as follows: the application provides a construction platform for an elevator shaft, which comprises fixed mechanisms symmetrically installed on both sides of an elevator shaft door opening. An inclined self-locking adjustable inclined support plate is installed on one side of the bottom end of the fixed mechanism. An adjustable support mechanism is arranged on the other side of the fixed mechanism. A horizontal support plate is arranged on the adjustable support mechanism and the self-locking adjustable inclined support plate. A construction platform is installed on the horizontal support plate.

[0006] The self-locking adjustable inclined support plate comprises a rotating support, an adjustable support plate and a self-locking assembly. The rotating support is fixedly arranged at the bottom end of the fixed mechanism. The adjustable support plate comprises a fixed support plate and a sleeve plate slidably arranged outside the fixed support plate. The sleeve plate is provided with a cavity with an opening on one side. One end of the fixed support plate is provided with a rotating shaft. The fixed support plate is rotatably connected with the rotating support through the rotating shaft. The rotating support is provided in a U-shaped manner. Self-locking holes are equidistantly arranged on the side wall of the sleeve plate along the length direction. The self-locking assembly is arranged on the side wall of the fixed support plate and is inserted into the self-locking hole. A self-adjusting support frame is rotatably arranged at one end of the sleeve plate away from the fixed mechanism.

[0007] The horizontal support plate is fixedly installed above the adjustable support mechanism, the end of the horizontal support plate is slidably connected with the abutting plate, the horizontal abutting spring is arranged between the abutting plate and the horizontal support plate, the self-adjusting support frame is slidably arranged on one side of the adjustable support plate, the abutting slide is arranged on the self-adjusting support frame, the abutting spring is arranged between the abutting slide and the self-adjusting support frame, and the abutting slide is connected with the horizontal support plate.

[0008] Preferably, at least one set of self-locking adjustable inclined support plates is arranged on each set of fixing mechanisms.

[0009] The self-locking assembly comprises a wedge-shaped block and a self-locking spring, the self-locking groove is arranged on the side wall of one end of the fixed support plate close to the sleeve plate, the wedge-shaped block is slidably arranged in the self-locking groove, the self-locking spring is arranged between the wedge-shaped block and the inner wall of the self-locking groove, the self-locking spring makes the wedge-shaped block have a tendency to slide out of the self-locking groove, and the side away from the sleeve plate of the wedge-shaped block is inclined, so that when the sleeve plate slides away from the fixed support plate, the side wall of the self-locking hole can push the wedge-shaped block to retract into the self-locking groove through the inclined side, and at the same time, the wedge-shaped block blocks the sleeve plate from moving downward along the fixed support plate, thereby avoiding the retraction of the sleeve plate and improving the safety of the device.

[0010] Further, the adjustable support mechanism comprises a fixed base, a support top plate and a scissor type support frame arranged between the fixed base and the support top plate, the fixed base is provided with an adjusting sliding groove, the adjusting sliding groove is symmetrically slidably provided with an adjusting sliding seat, the lower sides of the two ends of the scissor type support frame are respectively hingedly connected with the two adjusting sliding seats, the fixed base is provided with a linear movement drive for driving the adjusting sliding seat to slide along the adjusting sliding groove, and the adjusting sliding seat is provided with an anti-back movement assembly.

[0011] The anti-backward moving assembly is symmetrically arranged at two sides of the adjusting slide, the adjusting slide comprises a driven slide and a driving slide which are connected in sliding mode, a pushing sliding hole is arranged in the middle of the driven slide, the driving slide is slidingly arranged in the pushing sliding hole, the driving slide is connected with the line moving driver, pushing sliding blocks are symmetrically arranged at two sides of the driving slide, swinging grooves are symmetrically arranged at two sides of the driven slide, the pushing sliding hole and the pushing sliding groove are connected and communicated, the pushing sliding blocks are slidingly arranged in the pushing sliding groove, the anti-backward moving assembly comprises an anti-backward moving swinging rod and a pull rod, a swinging shaft is arranged at one side of the end of the swinging groove away from the adjusting slide, the anti-backward moving swinging rod is rotatably arranged in the swinging groove through the swinging shaft, an extension sliding groove is arranged at one side of the pushing sliding block close to the anti-backward moving swinging rod, a pulling sliding groove is arranged on the side wall of the anti-backward moving swinging rod in the circumferential direction, one end of the pull rod is slidingly arranged in the extension sliding groove, the other end of the pull rod extends into the pulling sliding groove, the end of the pull rod extending into the pulling sliding groove is provided with a pulling sliding shaft which is slidingly connected with the pulling sliding groove, a tension spring is arranged between the pull rod and the extension sliding groove, the swinging shaft is arranged on the center line of the pushing sliding groove, the length of the pushing sliding groove is less than the length of the anti-backward moving swinging rod, and the length from one side of the end of the anti-backward moving swinging rod away from the adjusting slide to the swinging shaft is less than the length from one side of the end of the anti-backward moving swinging rod close to the adjusting slide to the swinging shaft.

[0012] The tension spring makes the pull rod keep the tendency of being retracted into the extension sliding groove, and the end of the pull rod pulls the anti-backward moving swinging rod to rotate into the swinging groove.

[0013] Preferably, one end of the outer sleeve plate away from the fixing mechanism is provided with a wheel frame, a moving roller shaft is rotatably arranged in the wheel frame, and a self-adjusting support frame is rotatably arranged outside the wheel frame, the self-adjusting support frame is a rectangular frame, the self-adjusting support frame rotates coaxially with the moving roller shaft, the length from the edge of the self-adjusting support frame to the axis of the moving roller shaft is equal to the radius of the moving roller shaft, and the bottom end of the self-adjusting support frame is provided with a counterweight.

[0014] The counterweight makes the self-adjusting support frame keep the vertical downward state under the action of gravity regardless of the inclination of the adjustable support plate, and since the length from the edge of the self-adjusting support frame to the axis of the moving roller shaft is equal to the radius of the moving roller shaft, when the moving roller shaft abuts against the wall of the shaft, the self-adjusting support frame also abuts against the wall and cannot swing, at this time, the self-adjusting support frame keeps the stable vertical state, which is convenient for supporting the construction platform, and the moving roller shaft is convenient for moving the adjustable support plate along the wall.

[0015] As a further improvement of the scheme, a one-way sliding mechanism is arranged between the fixed support plate and the outer sleeve plate, the one-way sliding mechanism comprises a cam and a torsional spring, a slot hole is arranged on the bottom wall of the end of the fixed support plate close to the outer sleeve plate, a rotating shaft is rotatably arranged in the slot hole away from the outer sleeve plate, one end of the cam is connected with the rotating shaft, and the torsional spring is arranged between the cam and the inner wall of the slot hole. The torsional spring makes the end of the cam close to the outer sleeve plate keep a tendency to rotate outward of the slot hole. When the outer sleeve plate is pulled out along the fixed support plate, the outer sleeve plate pushes the cam to rotate inward of the slot hole, so as to avoid the outer sleeve plate and make the outer sleeve plate freely move. When the outer sleeve plate is retracted along the fixed support plate, the outer sleeve plate pushes the cam to rotate outward of the slot hole, so that the cam and the outer sleeve plate abut tightly, the resistance of the outer sleeve plate to move becomes larger, and the outer sleeve plate is difficult to move, thereby avoiding the outer sleeve plate to move back under the action of gravity and ensuring stable support.

[0016] Preferably, the cam and the anti-backward-moving swing rod are provided with anti-skid pads outside.

[0017] Preferably, an unlocking sleeve is arranged between the fixed support plate and the outer sleeve plate, a limiting block is arranged on the end of the fixed support plate away from the rotating shaft, the limiting block is in sliding fit with the inner wall of the outer sleeve plate, and a notch is arranged on the bottom wall of the end of the unlocking sleeve close to the limiting block. The length from the side wall of the notch to the end of the unlocking sleeve is greater than the length from the end of the cam away from the rotating shaft to the limiting block and less than the length from the rotating shaft to the limiting block.

[0018] When the unlocking sleeve moves towards the limiting block, the unlocking sleeve pushes the wedge-shaped blocks to retract into the self-locking grooves, and pushes the end of the cam close to the rotating shaft through the side wall of the notch to rotate inward of the slot hole and retract into the slot hole. When the unlocking sleeve is in fit with the limiting block, the unlocking sleeve pushes all the wedge-shaped blocks into the self-locking grooves, the cam completely retracts into the slot hole, and the side wall of the notch is located in the middle of the cam and does not exceed the end of the cam, so that when the unlocking sleeve moves backward, the cam does not limit the unlocking sleeve.

[0019] As a further improvement of the scheme, the fixed support plate is provided with a first insertion hole and a second insertion hole, a fixing hole is arranged on the end of the unlocking sleeve close to the rotating shaft, and a positioning insertion rod is arranged in the fixing hole.

[0020] By aligning the fixing hole with the first insertion hole or the second insertion hole and inserting the positioning insertion rod, the fixed support plate can be fixed at different positions, and the limiting or retaining can be easily released or maintained.

[0021] The wire displacement drive comprises a driving motor and a bidirectional screw, the bidirectional screw is rotatably arranged in the adjusting sliding groove, the two ends of the bidirectional screw are symmetrically provided with threads with opposite screw directions, two said driving slides are respectively connected with the threads at the two ends of the bidirectional screw, the driving motor is arranged on the side wall of the fixed base, and the output end of the driving motor is connected with the bidirectional screw through two intermeshing bevel gears.

[0022] The driving motor drives the double-way screw rod to rotate through bevel gears, and the double-way screw rod drives the two active sliding seats to move towards each other or move away from each other.

[0023] Further, the scissor support frame comprises support arm one, support arm two, guide pulley and guide slide rail, the middle parts of the support arm one and the support arm two are hingedly connected, the bottom ends of the support arm one and the support arm two are respectively hingedly connected with the two active sliding seats, the guide pulley is respectively arranged at the upper ends of the support arm one and the support arm two, the guide slide rail is fixedly installed at the bottom end of the support top plate, the guide slide rail is provided with two groups, the two groups of guide slide rails are respectively arranged at the two sides of the scissor support frame, and the guide pulleys at the upper ends of the support arm one and the support arm two are slidingly arranged in the two groups of guide slide rails.

[0024] The distance between the two adjusting sliding seats is adjusted by adjusting the wire displacement, so as to adjust the distance between the bottom end of the support arm one and the bottom end of the support arm two, and the height of the scissor support frame is adjusted, the scissor support frame is telescoped to drive the support top plate to ascend and descend, and the support top plate drives the construction platform to move up and down to adjust the height.

[0025] The fixing mechanism comprises an adjustable U-shaped clamping frame, an upper U-shaped clamping frame and a lower clamping plate, the side wall of the adjustable U-shaped clamping frame is provided with an outer slide rail, the side wall of the upper U-shaped clamping frame is provided with an inner slide rod, the inner slide rod is slidingly arranged in the outer slide rail, the upper U-shaped clamping frame is slidingly arranged at the upper end of the adjustable U-shaped clamping frame through the inner slide rod and the outer slide rail, the lower clamping plate is arranged at the bottom end of the adjustable U-shaped clamping frame, the lower clamping plate is arranged on the side away from the opening of the adjustable U-shaped clamping frame, the lower clamping plate is in inverted L-shaped arrangement, the rotating support is arranged on the upper wall of the lower clamping plate, the side walls of the adjustable U-shaped clamping frame and the upper U-shaped clamping frame are respectively provided with a clamping screw hole, the clamping screw hole is provided with a clamping bolt, the inner slide rod is provided with a positioning hole one at equal intervals along the length direction, the outer slide rail is provided with a positioning hole two at equal intervals along the length direction, and the positioning hole one and the positioning hole two are provided with a positioning bolt.

[0026] The construction platform comprises a plurality of horizontal plates, the horizontal support plates are arranged on the support top plate and the upper end of the self-adjusting support frame, the horizontal plates are fixedly installed above the plurality of horizontal support plates through bolts, the horizontal plates are arranged perpendicularly to the horizontal support plates, a plurality of groups of horizontal plates are arranged along the length direction of the horizontal support plates, and a proper number of horizontal plates can be selected according to the size of the elevator shaft and installed on the horizontal support plates.

[0027] Preferably, the support top plate is provided with a fixed sliding groove, a fixed sliding seat is slidably installed in the fixed sliding groove, a fixed through hole is penetratingly arranged on the fixed sliding seat, a fixed screw hole one is arranged on the wall of the fixed sliding seat and communicated with the fixed through hole, the horizontal support plate is arranged in the fixed through hole, the horizontal support plate is provided with fixed screw holes two equidistantly distributed, the fixed screw holes one and the fixed screw holes two are provided with fixed bolts, the side wall of the fixed sliding seat is threadedly connected with a locking bolt, and the side wall of the fixed sliding groove is penetratingly provided with a locking sliding groove.

[0028] The fixed sliding groove facilitates the adjustment of the position of the fixed sliding seat to adapt to elevator shaft door holes of different sizes, and the locking bolt facilitates the quick fixing and locking of the fixed sliding seat.

[0029] As a further improvement of the present scheme, the lower clamping plate is connected with a U-shaped fixing frame away from one side of the adjustable support plate, the fixed base is clamped in the U-shaped fixing frame, one side of the U-shaped fixing frame is provided with a mounting screw hole, and the mounting screw hole is provided with a limiting bolt, which abuts against the fixed base, thereby facilitating the fixing of the adjustable support mechanism.

[0030] As a further improvement of the present scheme, the abutting sliding frame is symmetrically provided with mounting plates away from one end of the self-adjusting support frame, the side wall of the horizontal support plate is provided with a screw hole one, the mounting plates are penetratingly provided with screw holes two, and the screw holes one and the screw holes two are threadedly connected with mounting bolts.

[0031] The above structure of the present application has the following beneficial effects:

[0032] 1. The horizontal support plate and the construction platform are lifted by the adjustable support mechanism to adjust the construction height, the adjustable support plate is elongated by the self-adjusting support frame driven by the horizontal support plate to adapt to the height of the adjustable support mechanism, thereby adjusting the abutting point of the adjustable support plate and the wall, the higher the height of the adjustable support mechanism, the longer the length of the adjustable support plate, and the cooperation of the self-locking assembly and the one-way sliding mechanism enables the outer sleeve plate to only slide outwards along the fixed support plate and cannot be retracted, thereby avoiding the retraction of the outer sleeve plate and improving the stability of the adjustable support plate in supporting the construction platform.

[0033] 2. The end of the adjustable support plate is provided with a moving roller shaft and a self-adjusting support frame which is automatically adjusted under the action of gravity, the moving roller shaft facilitates the upward movement of the adjustable support plate along the wall, the self-adjusting support frame always maintains a vertical downward state under the action of gravity, and since the length from the edge of the self-adjusting support frame to the axis of the moving roller shaft is equal to the radius of the moving roller shaft, when the moving roller shaft abuts against the wall of the shaft, the self-adjusting support frame also abuts against the wall and cannot swing, at this time, the self-adjusting support frame maintains a stable vertical state, thereby facilitating the support of the construction platform.

[0034] 3. The adjustable support mechanism moves the construction platform up and down to adjust its height, so as to fit the upper wall of the self-adjusting support frame. The adjustable support mechanism, the construction platform, and the diagonally set adjustable support plate form a stable triangular support structure to ensure the stability of the construction platform.

[0035] 4. Anti-reverse slip components are installed on both sides of the adjusting slide. The active slide drives the follower slide to move. When the two active slides move, the anti-reverse slip swing rod does not resist the movement of the follower slide. When the active slide stops moving, the weight of the supporting top plate and construction platform causes the two follower slides to tend to move away from each other. At this time, the anti-reverse slip swing rod is pressed against the inner wall of the adjusting groove. The moving direction of the follower slide is opposite to the tilting direction of the anti-reverse slip swing rod. As a result, the follower slide causes the anti-reverse slip swing rod to continue to rotate outward, which increases the resistance to the return of the follower slide and makes it difficult to move, thus achieving the technical effect of stable support.

[0036] 5. The clamping spring and clamping slide ensure that the self-adjusting support frame is always in contact with the wall, maintaining the self-adjusting support frame in contact with the wall, thus achieving a stable support effect. Attached Figure Description

[0037] Figure 1 A side view of a construction platform for an elevator shaft provided by the present invention;

[0038] Figure 2 This is a structural schematic diagram of a construction platform for elevator shafts provided by the present invention;

[0039] Figure 3 This is a structural schematic diagram of an elevator shaft construction platform provided by the present invention from another perspective;

[0040] Figure 4 This invention provides an installation schematic diagram of a construction platform for elevator shafts.

[0041] Figure 5 A schematic diagram of the adjustable support mechanism provided by the present invention;

[0042] Figure 6 Front view of the adjustable support mechanism provided by the present invention;

[0043] Figure 7 A schematic diagram of the combined structure of the adjusting slide and the anti-reverse component provided by the present invention;

[0044] Figure 8 A cross-sectional view of the adjusting slide and anti-reverse displacement assembly provided by the present invention;

[0045] Figure 9 A schematic diagram of the combined structure of the fixing mechanism and the self-locking adjustable diagonal brace provided by the present invention;

[0046] Figure 10 Structure diagram of adjustable support plate provided by the present application;

[0047] Figure 11 Exploded view of adjustable support plate provided by the present application;

[0048] Figure 12 Exploded view of adjustable support plate provided by the present application from another perspective;

[0049] Figure 13 Partial diagram of horizontal support plate;

[0050] Figure 14 Sectional view of fixed support plate, self-locking assembly and one-way sliding mechanism.

[0051] Wherein, 1, fixing mechanism, 2, self-locking adjustable inclined support plate, 3, adjustable support mechanism, 4, horizontal support plate, 5, construction platform, 6, rotating support, 7, adjustable support plate, 8, self-locking assembly, 9, fixed support plate, 10, outer sleeve plate, 11, rotating shaft, 12, self-locking hole, 13, self-adjusting support frame, 14, abutting plate, 15, horizontal abutting spring, 16, abutting sliding carriage, 17, abutting spring, 18, wheel carriage, 19, moving roller shaft, 20, counterweight, 21, mounting plate, 22, mounting bolt, 23, screw hole one, 24, wedge-shaped block, 25, self-locking spring, 26, self-locking groove, 27, one-way sliding mechanism, 28, cam, 29, torsional spring, 30, slot, 31, rotating shaft, 32, unlocking sleeve, 33, limiting block, 34, notch, 35, insertion hole one, 36, insertion hole two, 37, fixed hole, 38, positioning insertion rod, 39, fixed base, 40, support top plate, 41, scissor-type support frame, 42, adjusting sliding groove, 43, adjusting sliding seat, 44, linear displacement drive, 45, anti-backward movement assembly, 46, follow-up sliding seat, 47, active sliding seat, 48, push displacement sliding block, 49, swing groove, 50, push displacement sliding groove, 51, push displacement sliding hole, 52, anti-backward movement swing lever, 53, pull rod, 54, swing shaft, 55, telescopic sliding groove, 56, pull displacement sliding groove, 57, pull displacement sliding shaft, 58, pull spring, 59, anti-slip pad, 60, drive motor, 61, bidirectional screw rod, 62, support arm one, 63, support arm two, 64, guide pulley, 65, guide sliding rail, 66, fixed sliding groove, 67, fixed sliding seat, 68, fixed through hole, 69, fixed screw hole one, 70, fixed screw hole two, 71, fixed bolt, 72, locking bolt, 73, locking sliding groove, 74, adjustable U-shaped clamping frame, 75, upper U-shaped clamping frame, 76, lower clamping plate, 77, outer sliding rail, 78, inner sliding rod, 79, abutting screw hole, 80, abutting bolt, 81, positioning hole one, 82, positioning hole two, 83, positioning bolt, 84, U-shaped fixed frame, 85, mounting screw hole, 86, limiting bolt, 87, transverse flat plate.

[0052] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of the specification, illustrate embodiments of the application, and are used to explain the present application, but are not intended to limit the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0055] As shown in Figures 1-14 The present application provides a construction platform for elevator shaft, which comprises a fixing mechanism 1 symmetrically installed on both sides of the door opening of the elevator shaft, an inclined self-locking adjustable inclined support plate 2 is installed on one side of the bottom end of the fixing mechanism 1, an adjustable support mechanism 3 is arranged on the other side of the fixing mechanism 1, a horizontal support plate 4 is arranged on the adjustable support mechanism 3 and the self-locking adjustable inclined support plate 2, and a construction platform 5 is installed on the horizontal support plate 4.

[0056] The self-locking adjustable inclined support plate 2 comprises a rotating support 6, an adjustable support plate 7 and a self-locking assembly 8, the rotating support 6 is fixedly arranged at the bottom end of the fixing mechanism 1, the adjustable support plate 7 comprises a fixed support plate 9 and a sleeve plate 10 sleeved on the outer side of the fixed support plate 9, the sleeve plate 10 is provided as a cavity with an opening on one side, one end of the fixed support plate 9 is provided with a rotating shaft 11, the fixed support plate 9 is rotationally connected with the rotating support 6 through the rotating shaft 11, the rotating support 6 is provided in a U-shaped manner, self-locking holes 12 are equidistantly arranged on the side wall of the sleeve plate 10 along the length direction, the self-locking assembly 8 is arranged on the side wall of the fixed support plate 9 and inserted into the self-locking holes 12, and a self-adjusting support frame 13 is rotationally arranged at the end of the sleeve plate 10 away from the fixing mechanism 1.

[0057] The horizontal support plate 4 is fixedly installed above the adjustable support mechanism 3, the end of the horizontal support plate 4 is slidingly connected with the abutting plate 14, the horizontal abutting spring 15 is arranged between the horizontal support plate 4 and the abutting plate 14, the self-adjusting support frame 13 is slidingly arranged on the side close to the adjustable support plate 7, the abutting sliding frame 16 is arranged between the self-adjusting support frame 13 and the abutting sliding frame 16, and the abutting spring 17 is arranged between the abutting sliding frame 16 and the self-adjusting support frame 13.

[0058] Referring to Figures 9-14 , the outer sleeve plate 10 is provided with the wheel frame 18 away from the fixed mechanism 1, the moving roller shaft 19 is rotatably arranged in the wheel frame 18, the self-adjusting support frame 13 is rotatably arranged outside the wheel frame 18, the self-adjusting support frame 13 is arranged in a rectangular frame, the self-adjusting support frame 13 is coaxially rotatable with the moving roller shaft 19, the length from the edge of the self-adjusting support frame 13 to the axis of the moving roller shaft 19 is equal to the radius of the moving roller shaft 19, and the self-adjusting support frame 13 is provided with the counterweight 20 at the bottom end.

[0059] The abutting sliding frame 16 is symmetrically provided with the mounting plate 21 away from the self-adjusting support frame 13, the side wall of the horizontal support plate 4 is provided with the screw hole one 23, the mounting plate 21 is provided with the screw hole two penetrating through, and the mounting bolt 22 is threadedly connected in the screw hole one 23 and the screw hole two.

[0060] Referring to Figures 1-3 In the embodiment, one set of self-locking adjustable inclined support plates 2 is arranged on each fixed mechanism 1.

[0061] As shown in Figure 9 and Figure 14 , the self-locking assembly 8 comprises the wedge-shaped block 24 and the self-locking spring 25, the self-locking groove 26 is arranged on the side wall of the fixed support plate 9 close to one end of the outer sleeve plate 10, the wedge-shaped block 24 is slidingly arranged in the self-locking groove 26, the self-locking spring 25 is arranged between the wedge-shaped block 24 and the inner wall of the self-locking groove 26, the self-locking spring 25 makes the wedge-shaped block 24 have a tendency to slide out of the self-locking groove 26, and the side away from the outer sleeve plate 10 of the wedge-shaped block 24 is arranged in an inclined manner, so that when the outer sleeve plate 10 slides away from the fixed support plate 9, the side wall of the self-locking hole 12 can push the wedge-shaped block 24 to retract into the self-locking groove 26 through the inclined side, and meanwhile, the wedge-shaped block 24 blocks the outer sleeve plate 10 from moving downward along the fixed support plate 9, thereby avoiding the retraction of the outer sleeve plate 10 and improving the safety of the device.

[0062] Referring to Figures 10-14The fixed supporting plate 9 and the outer sleeve plate 10 are provided with a one-way sliding mechanism 27, the one-way sliding mechanism 27 comprises a cam 28 and a torsional spring 29, the bottom wall of the fixed supporting plate 9 near one end of the outer sleeve plate 10 is provided with a slot hole 30, the slot hole 30 is rotatably provided with a rotating shaft 31 away from the outer sleeve plate 10, one end of the cam 28 is connected with the rotating shaft 31, the torsional spring 29 is arranged between the cam 28 and the inner wall of the slot hole 30, the torsional spring 29 makes the one end of the cam 28 close to the outer sleeve plate 10 keep a tendency of rotating to the outside of the slot hole 30, when the outer sleeve plate 10 is pulled out along the fixed supporting plate 9, the outer sleeve plate 10 pushes the cam 28 to rotate to the inside of the slot hole 30, and the outer sleeve plate 10 is avoided, so that the outer sleeve plate 10 can be freely moved, when the outer sleeve plate 10 is retracted along the fixed supporting plate 9, the outer sleeve plate 10 pushes the cam 28 to rotate to the outside of the slot hole 30, so that the cam 28 and the outer sleeve plate 10 are tightly contacted, the resistance of the outer sleeve plate 10 is increased, the outer sleeve plate 10 is difficult to move, the outer sleeve plate 10 is prevented from being retracted under the action of gravity, and stable support is ensured.

[0063] The fixed supporting plate 9 and the outer sleeve plate 10 are provided with an unlocking sleeve 32, one end of the fixed supporting plate 9 away from the rotating shaft 11 is provided with a limiting block 33, the limiting block 33 is slidably attached to the inner wall of the outer sleeve plate 10, the bottom wall of the one end of the unlocking sleeve 32 close to the limiting block 33 is provided with a notch 34, the length from the side wall of the notch 34 to the end of the unlocking sleeve 32 is greater than the length from the one end of the cam 28 away from the rotating shaft 31 to the limiting block 33 and less than the length from the rotating shaft 31 to the limiting block 33; the fixed supporting plate 9 is provided with a first insertion hole 35 and a second insertion hole 36, the one end of the unlocking sleeve 32 close to the rotating shaft 11 is provided with a fixing hole 37, and the fixing hole 37 is provided with a positioning insertion rod 38.

[0064] By aligning the fixing hole 37 with the first insertion hole 35 or the second insertion hole 36, and inserting the positioning insertion rod 38, the fixed supporting plate 9 can be fixed at different positions, and the limiting or retaining can be easily released.

[0065] As shown in the figure, Figures 2-8 The adjustable supporting mechanism 3 comprises a fixed base 39, a supporting top plate 40 and a scissor type supporting frame 41 arranged between the fixed base 39 and the supporting top plate 40, the fixed base 39 is provided with an adjusting sliding groove 42, the adjusting sliding groove 42 is symmetrically provided with an adjusting sliding seat 43, the lower two ends of the scissor type supporting frame 41 are respectively connected with the two adjusting sliding seats 43 through hinging, the fixed base 39 is provided with a linear movement drive 44 for driving the adjusting sliding seat 43 to slide along the adjusting sliding groove 42, and the adjusting sliding seat 43 is provided with an anti-back movement assembly 45.

[0066] The anti-backward moving assembly 45 is symmetrically arranged at two sides of the adjusting slide 43, the adjusting slide 43 comprises a driven slide 46 and a driving slide 47 which are slidingly connected, the driven slide 46 is provided with a pushing sliding hole 51 in the middle, the driving slide 47 is slidingly arranged in the pushing sliding hole 51, the driving slide 47 is connected with the line moving drive 44, the driving slide 47 is symmetrically provided with a pushing sliding block 48 at two sides, the driven slide 46 is symmetrically provided with an oscillating groove 49 at two sides, the oscillating groove 49 and the pushing sliding hole 51 are communicated with a pushing sliding groove 50, the pushing sliding block 48 is slidingly arranged in the pushing sliding groove 50, the anti-backward moving assembly 45 comprises an anti-backward moving swing rod 52 and a pull rod 53, one side of the oscillating groove 49 away from the adjusting sliding groove 42 is provided with a swing shaft 54, the anti-backward moving swing rod 52 is rotatably arranged in the oscillating groove 49 through the swing shaft 54, one side of the pushing sliding block 48 close to the anti-backward moving swing rod 52 is provided with an extension sliding groove 55, a side wall of the anti-backward moving swing rod 52 is circumferentially provided with a pulling sliding groove 56, one end of the pull rod 53 is slidingly arranged in the extension sliding groove 55, the other end of the pull rod 53 extends into the pulling sliding groove 56, one end of the pull rod 53 extending into the pulling sliding groove 56 is provided with a pulling sliding shaft 57 which is slidingly connected with the pulling sliding groove 56, the pull rod 53 and the extension sliding groove 55 are provided with a pull spring 58, the swing shaft 54 is arranged on the center line of the pushing sliding groove 50, the length of the pushing sliding groove 50 is less than the length of the anti-backward moving swing rod 52, the length from one side of the anti-backward moving swing rod 52 away from the end of the adjusting sliding groove 42 to the swing shaft 54 is less than the length from one side of the anti-backward moving swing rod 52 close to the end of the adjusting sliding groove 42 to the swing shaft 54.

[0067] The pull spring 58 makes the pull rod 53 keep the tendency of retracting into the extension sliding groove 55, the pull rod 53 pulls the end of the anti-backward moving swing rod 52 to rotate into the oscillating groove 49.

[0068] The outer side of the cam 28 and the anti-backward moving swing rod 52 is provided with an anti-skid pad 59.

[0069] The line moving drive 44 comprises a driving motor 60 and a bidirectional screw 61, the bidirectional screw 61 is rotatably arranged in the adjusting sliding groove 42, the two ends of the bidirectional screw 61 are symmetrically provided with threads with opposite directions, the two driving slides 47 are respectively threadedly connected with the two ends of the bidirectional screw 61, the driving motor 60 is arranged on the side wall of the fixed base 39, the output end of the driving motor 60 is connected with the bidirectional screw 61 through two intermeshing bevel gears.

[0070] The driving motor 60 drives the bidirectional screw 61 to rotate through the bevel gears, the bidirectional screw 61 drives the two driving slides 47 to move close to each other or move away from each other.

[0071] The scissor support frame 41 comprises support arm one 62, support arm two 63, guide pulley 64 and guide rail 65, the middle parts of the support arm one 62 and the support arm two 63 are hingedly connected, the bottom ends of the support arm one 62 and the support arm two 63 are respectively hingedly connected with two active sliding seats 47, the guide pulley 64 is respectively arranged at the upper ends of the support arm one 62 and the support arm two 63, the guide rail 65 is fixedly installed at the bottom end of the support top plate 40, the guide rail 65 is provided with two groups, the two groups of guide rails 65 are respectively arranged at the two sides of the scissor support frame 41, the guide pulley 64 at the upper end of the support arm one 62 and the guide pulley 64 at the upper end of the support arm two 63 are slidingly arranged in the two groups of guide rails 65.

[0072] The height of the scissor support frame 41 is adjusted by adjusting the distance between the two adjusting sliding seats 43 through the wire displacement drive 44, so as to adjust the distance between the bottom end of the support arm one 62 and the bottom end of the support arm two 63, the height of the support top plate 40 is adjusted by the expansion and contraction of the scissor support frame 41, the support top plate 40 drives the construction platform 5 to move up and down to adjust the height.

[0073] The support top plate 40 is provided with a fixed sliding groove 66, a fixed sliding seat 67 is slidingly installed in the fixed sliding groove 66, a fixed through hole 68 is arranged through the fixed sliding seat 67, a fixed screw hole one 69 is arranged on the upper wall of the fixed sliding seat 67 and communicates with the fixed through hole 68, the horizontal support plate 4 is arranged through the fixed through hole 68, the horizontal support plate 4 is provided with fixed screw holes two 70 at equal intervals, the fixed screw hole one 69 and the fixed screw hole two 70 are provided with fixed bolts 71, the side wall of the fixed sliding seat 67 is provided with a locking bolt 72 in a threaded connection mode, the side wall of the fixed sliding groove 66 is provided with a locking sliding groove 73 in a penetrating mode, and the middle part of the locking bolt 72 penetrates through the locking sliding groove 73.

[0074] As Figures 1-9As shown, the fixing mechanism 1 comprises an adjustable U-shaped bracket 74, an upper U-shaped bracket 75 and a lower clamping plate 76. The side wall of the adjustable U-shaped bracket 74 is provided with an outer sliding rail 77. The side wall of the upper U-shaped bracket 75 is provided with an inner sliding rod 78 which is slidingly arranged in the outer sliding rail 77. The upper U-shaped bracket 75 is slidingly arranged at the upper end of the adjustable U-shaped bracket 74 through the inner sliding rod 78 and the outer sliding rail 77. The lower clamping plate 76 is arranged at the bottom end of the adjustable U-shaped bracket 74 and is arranged at the side of the adjustable U-shaped bracket 74 away from the opening. The lower clamping plate 76 is arranged in an inverted L shape. The rotating support 6 is arranged on the upper wall of the lower clamping plate 76. The side walls of the adjustable U-shaped bracket 74 and the upper U-shaped bracket 75 are respectively provided with abutting screw holes 79. The abutting screw holes 79 are provided with abutting bolts 80. The inner sliding rod 78 is provided with positioning holes one 81 which are equidistantly distributed along the length direction. The outer sliding rail 77 is provided with positioning holes two 82 which are equidistantly distributed along the length direction. The positioning holes one 81 and the positioning holes two 82 are provided with positioning bolts 83. The slidingly arranged adjustable U-shaped bracket 74 and the upper U-shaped bracket 75 are convenient for adapting to elevator shaft door holes of different heights.

[0075] The side of the lower clamping plate 76 away from the adjustable support plate 7 is connected with a U-shaped fixing bracket 84. The fixing base 39 is clamped in the U-shaped fixing bracket 84. One side of the U-shaped fixing bracket 84 is provided with a mounting screw hole 85. The mounting screw hole 85 is provided with a limiting bolt 86. The fixing base 39 is abuttingly arranged through the limiting bolt 86, so as to conveniently fix the adjustable support mechanism 3.

[0076] The construction platform 5 comprises a plurality of transverse plates 87. The horizontal support plates 4 are arranged on the support top plate 40 and the upper end of the self-adjusting support frame 13. The transverse plates 87 are fixedly arranged above the plurality of horizontal support plates 4 through bolts. The transverse plates 87 are arranged perpendicularly to the horizontal support plates 4. A plurality of groups of transverse plates 87 are arranged along the length direction of the horizontal support plates 4. During installation, a proper number of transverse plates 87 can be selected according to the size of the elevator shaft and are installed on the horizontal support plates 4.

[0077] In specific use, first, install two fixing mechanisms 1 on the walls on both sides of the elevator shaft door hole, first, clamp the adjustable U-shaped clamping frame 74 on the wall and make one side of the adjustable U-shaped clamping frame 74 tightly fit the inner wall of the wall of the elevator shaft door hole, and the lower clamping plate 76 tightly fit the bottom wall of the door hole, then tighten the abutting bolt 80 to fix the adjustable U-shaped clamping frame 74 on the wall of the elevator shaft door hole, then pull the inner sliding rod 78 upward to drive the upper U-shaped clamping frame 75 to move upward, make the upper U-shaped clamping frame 75 close to the upper wall of the elevator shaft door hole, and make the first positioning hole 81 align with the second positioning hole 82, then insert the positioning bolt 83 into the aligned first positioning hole 81 and second positioning hole 82 to fix the inner sliding rod 78 and the outer sliding rail 77, after the installation of the two fixing mechanisms 1, install the rotating shaft 11 of the adjustable support plate 7 on the rotating support 6, initially, the fixed hole 37 aligns with the insertion hole one 35, the positioning insertion rod 38 is inserted into the fixed hole 37 and the insertion hole one 35, at this time, the unlocking sleeve 32 is not in contact with the wedge block 24 and the cam 28, the wedge block 24 and the cam 28 limit the outer sleeve plate 10, the self-locking slot 26 aligns with the self-locking hole 12 on the side wall of the outer sleeve plate 10, the self-locking spring 25 makes the wedge block 24 keep the tendency of sliding outward from the self-locking slot 26, the wedge block 24 passes through and extends from the self-locking hole 12, the torsional spring 29 makes the end of the cam 28 close to the outer sleeve plate 10 keep the tendency of rotating outward from the slot hole 30, the end of the cam 28 away from the rotating shaft 31 tightly fits the inner wall of the outer sleeve plate 10, the outer sleeve plate 10 can only be pulled out of the fixed support plate 9, and cannot be retracted, then slowly put down the adjustable support plate 7 by means of tools to make the moving roller shaft 19 of the adjustable support plate 7 abut against the wall of the elevator shaft, initially, the adjustable support plate 7 is in the retracted state, the length of the adjustable support plate 7 is slightly greater than the width of the elevator shaft, in the rotating process of the adjustable support plate 7, the counterweight 20 makes the self-adjusting support frame 13 keep the vertical downward state under the action of gravity regardless of the inclination of the adjustable support plate 7, and because the length from the edge of the self-adjusting support frame 13 to the axis of the moving roller shaft 19 is equal to the radius of the moving roller shaft 19, when the moving roller shaft 19 abuts against the wall of the shaft, the self-adjusting support frame 13 also abuts against the wall and cannot swing, at this time, the self-adjusting support frame 13 keeps the stable vertical state, then put the adjustable support mechanism 3 into the U-shaped fixing frame 84 and tighten the limiting bolt 86 to fix the adjustable support mechanism 3, after the installation of the adjustable support mechanism 3, pass the horizontal support plate 4 through the fixed through hole 68 to make the other end of the horizontal support plate 4 abut against the wall of the elevator shaft and make the fixed screw hole one 69 align with the fixed screw hole two 70, then insert the fixed bolt 71 into the fixed screw hole one 69 and the fixed screw hole two 70 to fix the horizontal support plate 4 on the fixed sliding seat 67, then adjust the adjustable support mechanism 3 to drive the horizontal support plate 4 to move up and down, start the drive motor 60, the drive motor 60 drives the bidirectional screw rod 61 to rotate through the bevel gears, the bidirectional screw rod 61 drives the two driving sliding seats 47 to move close to each other or move away from each other, when it is needed to raise the height of the support top plate 40,The two active slides 47 are controlled to move close to each other, driving the scissor support frame 41 to extend, and the scissor support frame 41 drives the support top plate 40 and the horizontal support plate 4 to move upwards. When the two active slides 47 move close to each other, the active slide 47 moves first, and the driven slide 46 does not move. When the active slide 47 drives the push slide 48 to slide to the side away from the end of the adjusting slot 42 of the push sliding groove 50, the push slide 48 pushes the driven slide 46 to move synchronously. At this time, the pull rod 53 drives the pull slide shaft 57 to move to the side away from the end of the adjusting slot 42 of the anti-backward swing rod 52, and pulls the anti-backward swing rod 52 away from the end of the adjusting slot 42 to rotate inside the swing slot 49, so that the anti-backward swing rod 52 rotates to the outside of the swing slot 49 away from the end of the adjusting slot 42 and abuts against the inner wall of the adjusting slot 42. During the movement of the driven slide 46 along the adjusting slot 42 away from the end of the adjusting slot 42, the movement direction of the driven slide 46 is the same as the inclination direction of the anti-backward swing rod 52, and the anti-backward swing rod 52 automatically avoids. When it is needed to lower the height of the support top plate 40, the two active slides 47 are controlled to move away from each other, driving the scissor support frame 41 to contract, and the scissor support frame 41 drives the support top plate 40 and the horizontal support plate 4 to move downwards. When the two active slides 47 move away from each other, the active slide 47 moves first to be close to the end of the adjusting slot 42, and the driven slide 46 does not move. When the active slide 47 drives the push slide 48 to slide to the side close to the end of the adjusting slot 42 of the push sliding groove 50, the push slide 48 pushes the driven slide 46 to move synchronously. At this time, the pull rod 53 drives the pull slide shaft 57 to move to the side close to the end of the adjusting slot 42 of the anti-backward swing rod 52, and pulls the anti-backward swing rod 52 close to the end of the adjusting slot 42 to rotate inside the swing slot 49, so that the anti-backward swing rod 52 is retracted into the swing slot 49. At this time, the anti-backward swing rod 52 does not contact the inner wall of the adjusting slot 42, and the adjusting slide 43 can move freely close to the end of the adjusting slot 42. When the adjusting slide 43 stops moving, the weight of the support top plate 40 and the horizontal support plate 4 itself makes the two driven slides 46 have a tendency to move away from each other. At this time, the anti-backward swing rod 52 abuts against the inner wall of the adjusting slot 42, and the movement direction of the driven slide 46 is opposite to the inclination direction of the anti-backward swing rod 52, so that the driven slide 46 makes the anti-backward swing rod 52 have a tendency to continue to rotate outward, and the resistance of the driven slide 46 to move back is increased, so that the driven slide 46 is difficult to move, thereby achieving the technical effect of stable support. When the bottom end of the horizontal support plate 4 abuts against the upper wall of the self-adjusting support frame 13, the adjustable support mechanism 3 is stopped. When the height of the horizontal support plate 4 is adjusted up and down, the worker can manually adjust the fixed slide 67, and drive the horizontal support plate 4 to move horizontally through the fixed slide 67. When the horizontal support plate 4 is located between the two mounting plates 21, the movement of the fixed slide 67 is stopped, and the locking bolt 72 is tightened to quickly lock the fixed slide 67. Then the worker steps on the horizontal support plate 4 to adjust the abutting slide 16, so that the screw hole one 23 and the screw hole two are aligned,And the installation bolt 22 is inserted into the screw hole one 23 and the screw hole two, so that the abutting carriage 16 is fixedly installed at the bottom end of the horizontal support plate 4, and then the transverse flat plate 87 is laid on the horizontal support plate 4 in sequence through bolts, forming a complete construction platform 5, when the construction height needs to be adjusted, the driving motor 60 is started, the driving motor 60 drives the bidirectional screw rod 61 to rotate through the bevel gear, the bidirectional screw rod 61 drives the two driving sliding blocks 47 to move towards each other and close, adjusts the distance between the bottom end of the support arm one 62 and the bottom end of the support arm two 63, drives the scissor type support frame 41 to elongate, the scissor type support frame 41 telescopes to drive the support top plate 40 to move upwards, the support top plate 40 drives the horizontal support plate 4 and the construction platform 5 to move upwards, the horizontal support plate 4 drives the outer sleeve plate 10 to slide along the fixed support plate 9, so that the length of the adjustable support plate 7 becomes longer, during the upward movement of the horizontal support plate 4, the horizontal abutting spring 15 always pushes the abutting plate 14 to be attached to the wall, the self-adjusting support frame 13 is always kept attached to the wall by the abutting spring 17, so that the adjustable support plate 7 is always kept in abutting state with the wall, the adjustable support plate 7 realizes stable support to the horizontal support plate 4 under the double anti-backward movement effects of the cam 28 and the wedge block 24, the adjustable support mechanism 3, the construction platform 5 and the obliquely arranged adjustable support plate 7 form a stable triangular support structure, which guarantees the stability of the construction platform 5.

[0078] When the use is completed, the transverse flat plate 87 is removed from the horizontal support plate 4, the horizontal support plate 4 is removed from the fixed sliding block 67 and the abutting carriage 16, then the adjustable support plate 7 is removed from the rotating support 6, the positioning plug rod 38 is pulled out, the unlocking sleeve 32 is moved towards the limiting block 33 to align the second insertion hole 36 with the fixed hole 37, and the positioning plug rod 38 is inserted into the fixed hole 37 and the second insertion hole 36, the unlocking sleeve 32 pushes the wedge block 24 to retract into the self-locking groove 26, and pushes the cam 28 to approach the end of the rotating shaft 31 through the sidewall of the gap 34, so that the cam 28 rotates into the slot hole 30 and retracts into the slot hole 30, when the second insertion hole 36 is aligned with the fixed hole 37, the unlocking sleeve 32 is attached to the limiting block 33, the unlocking sleeve 32 pushes all the wedge blocks 24 into the self-locking groove 26, the cam 28 completely retracts into the slot hole 30, and the sidewall of the gap 34 is located in the middle of the cam 28 and does not exceed the end of the cam 28, at this time the outer sleeve plate 10 can be freely slid, the outer sleeve plate 10 is moved downwards along the fixed support plate 9 to reset for next use.

[0079] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; thus the use of any

[0080] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the application.

Claims

1. A construction platform for elevator shafts, characterized in that: The system includes a fixing mechanism (1) symmetrically installed on both sides of the elevator shaft door opening. A self-locking adjustable brace plate (2) is installed on one side of the bottom end of the fixing mechanism (1). An adjustable support mechanism (3) is provided on the other side of the fixing mechanism (1). A horizontal support plate (4) is mounted on the adjustable support mechanism (3) and the self-locking adjustable brace plate (2). A construction platform (5) is installed on the horizontal support plate (4). The self-locking adjustable brace (2) includes a rotating bracket (6), an adjustable brace (7), and a self-locking component (8). The rotating bracket (6) is fixedly mounted on the bottom end of the fixing mechanism (1). The adjustable brace (7) includes a fixed support plate (9) and an outer sleeve (10) that is slidably mounted on the outside of the fixed support plate (9). The outer sleeve (10) is a cavity with an opening on one side. One end of the fixed support plate (9) is provided with a rotating shaft (11). The fixed support plate (9) is rotatably connected to the rotating bracket (6) through the rotating shaft (11). The side wall of the outer sleeve (10) is provided with self-locking holes (12) evenly distributed along the length direction. The self-locking component (8) is located on the side wall of the fixed support plate (9) and is inserted into the self-locking holes (12). The end of the outer sleeve (10) away from the fixing mechanism (1) is rotatably provided with a self-adjusting support frame (13). The adjustable support mechanism (3) includes a fixed base (39), a support top plate (40), and a scissor-type support frame (41) disposed between the fixed base (39) and the support top plate (40). The fixed base (39) is provided with an adjustment groove (42). An adjustment slide block (43) is symmetrically slidably disposed in the adjustment groove (42). The two ends of the lower side of the scissor-type support frame (41) are respectively hinged to the two adjustment slide blocks (43). The fixed base (39) is provided with a line displacement drive (44) for driving the adjustment slide block (43) to slide along the adjustment groove (42). The adjustment slide block (43) is provided with an anti-reverse displacement component (45). The anti-reverse component (45) is symmetrically arranged on both sides of the adjusting slide (43). The adjusting slide (43) includes a follower slide (46) and an active slide (47) that are slidably connected. A push-slide hole (51) is provided through the middle of the follower slide (46). The active slide (47) is slidably locked in the push-slide hole (51). The active slide (47) is connected to the linear displacement drive (44). Push sliders (48) are symmetrically arranged on both sides of the active slide (47). Swing grooves (49) are symmetrically arranged on both sides of the follower slide (46). A push-slide groove (50) is provided between the swing groove (49) and the push-slide hole (51). The push slider (48) is slidably locked in the push-slide groove (50). The anti-reverse component (45) includes an anti-reverse swing arm. The rod (52) and the pull rod (53) are provided. The swing groove (49) is provided with a swing shaft (54) on the side away from the end of the adjusting slide groove (42). The anti-reverse swing rod (52) is rotatably disposed in the swing groove (49) through the swing shaft (54). The push slider (48) is provided with a telescopic slide groove (55) on the side near the anti-reverse swing rod (52). The side wall of the anti-reverse swing rod (52) is provided with a pull slide groove (56) along the circumferential direction. One end of the pull rod (53) is slidably disposed in the telescopic slide groove (55). The other end of the pull rod (53) extends into the pull slide groove (56). One end of the pull rod (53) extending into the pull slide groove (56) is provided with a pull slide shaft (57) that is slidably connected to the pull slide groove (56). A tension spring (58) is provided between the pull rod (53) and the telescopic slide groove (55).

2. The elevator shaft construction platform according to claim 1, characterized in that: The horizontal support plate (4) is fixedly installed above the adjustable support mechanism (3). The end of the horizontal support plate (4) is slidably connected to a retaining plate (14). A horizontal retaining spring (15) is provided between the retaining plate (14) and the horizontal support plate (4). A retaining slide (16) is slidably provided on the side of the self-adjusting support frame (13) near the adjustable support plate (7). A retaining spring (17) is provided between the retaining slide (16) and the self-adjusting support frame (13). The retaining slide (16) is connected to the horizontal support plate (4).

3. The elevator shaft construction platform according to claim 2, characterized in that: The self-locking assembly (8) includes a wedge block (24) and a self-locking spring (25). The fixed support plate (9) has a self-locking groove (26) on the side wall near the outer sleeve plate (10). The wedge block (24) is slidably disposed in the self-locking groove (26), and the self-locking spring (25) is disposed between the wedge block (24) and the inner wall of the self-locking groove (26).

4. The elevator shaft construction platform according to claim 3, characterized in that: The outer jacket (10) is provided with a wheel frame (18) at one end away from the fixing mechanism (1). A movable roller shaft (19) is rotatably provided inside the wheel frame (18). The self-adjusting support frame (13) is rotatably provided outside the wheel frame (18). The self-adjusting support frame (13) is a rectangular frame. The self-adjusting support frame (13) and the movable roller shaft (19) rotate coaxially. The length from the edge of the self-adjusting support frame (13) to the axis of the movable roller shaft (19) is equal to the radius of the movable roller shaft (19). The bottom end of the self-adjusting support frame (13) is provided with a counterweight (20).

5. A construction platform for elevator shafts according to claim 4, characterized in that: A one-way sliding mechanism (27) is provided between the fixed support plate (9) and the outer sleeve plate (10). The one-way sliding mechanism (27) includes a cam (28) and a torsion spring (29). The bottom wall of the fixed support plate (9) near the outer sleeve plate (10) is provided with a slot (30). A rotating shaft (31) is rotatably provided on the side of the slot (30) away from the outer sleeve plate (10). One end of the cam (28) is connected to the rotating shaft (31). The torsion spring (29) is located between the cam (28) and the inner wall of the slot (30).

6. A construction platform for elevator shafts according to claim 5, characterized in that: An unlocking sleeve (32) is slidably provided between the fixed support plate (9) and the outer sleeve (10). A limiting block (33) is provided at one end of the fixed support plate (9) away from the rotating shaft (11). The limiting block (33) is slidably attached to the inner wall of the outer sleeve (10). A notch (34) is provided on the bottom wall of the unlocking sleeve (32) near the limiting block (33).

7. A construction platform for elevator shafts according to claim 6, characterized in that: The fixing mechanism (1) includes an adjustable U-shaped card holder (74), an upper U-shaped card holder (75), and a lower card plate (76). The side wall of the adjustable U-shaped card holder (74) is provided with an outer slide rail (77), and the side wall of the upper U-shaped card holder (75) is provided with an inner slide rod (78). The inner slide rod (78) is slidably locked in the outer slide rail (77). The upper U-shaped card holder (75) is slidably mounted on the upper end of the adjustable U-shaped card holder (74) through the inner slide rod (78) and the outer slide rail (77). The lower card plate (76) is located at the bottom end of the adjustable U-shaped card holder (74) and is located on the side of the adjustable U-shaped card holder (74) away from the opening. The lower card plate (76) is arranged in an inverted L shape. The rotating bracket (6) is located on the upper wall of the lower card plate (76).

8. A construction platform for elevator shafts according to claim 7, characterized in that: The lower plate (76) is connected to a U-shaped fixing frame (84) on the side away from the adjustable support plate (7), and the fixing base (39) is locked in the U-shaped fixing frame (84).

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