Elevator with a straight flat spiral double-track staircase walkway

Abstract

A kind of vertical flat round spiral double track stairway elevator, it is by being installed around the middle handrail of staircase two straight, parallel flat round spiral T-shaped track device (1-10), elevator car and load platform combination (11), traction drive (12) or self-driven and control mechanism composition;Elevator car and load platform combination (11) are clamped in the middle by two straight, parallel T-shaped spiral track, by the control of upward traction drive or self-driven and control mechanism, drive elevator car and load platform combination (11) along two parallel flat round spiral T-shaped track up and down operation, transport personnel and goods to the designated floor.This can solve the problem of the residents in the multi-storey building without elevator up and down the stairs;The elevator structure is simple, novel, can reach the destination floor, easy to use, economical and safe.

Description

Technical Field

[0001] The present invention relates to a vertical oval spiral double - track staircase walkway elevator. It vertically fixes and erects two parallel oval spiral T - shaped tracks around the middle handrail of the staircase, clamping the elevator car and the load - carrying platform combination, and under the control of the driving control device, it runs up and down along the tracks to transport people and goods to the designated floor positions of the staircase. Background Art

[0002] Due to historical reasons, there are still a large number of multi - storey buildings in China that have not been equipped with elevators. The residents in these buildings have great inconvenience in traveling. It is not feasible to install elevators in these buildings due to various reasons. Therefore, the residents in these buildings urgently hope to have better and economically viable solutions to help them solve the problems of people traveling and goods going up and down the stairs. Installing a staircase walkway elevator using the available space in the existing building stairwell is one of the solutions. It is reported that there are already technical solutions such as "section - by - section relay staircase elevator" and "external rotary elevator that can run in the elevator shaft of the stairwell, ZL201710230650.9". Among these solutions, the "section - by - section relay staircase elevator" cannot run continuously and cannot reach the destination floor directly, making it inconvenient to use. The "external rotary elevator that can run in the elevator shaft of the stairwell, ZL201710230650.9" can reach directly, but it has strict requirements on the width of the stairwell of the building where the elevator is installed. There are not many existing buildings that can meet this requirement, and some even need to renovate the stairwell. Therefore, the existing solutions have not been widely applied. Summary of the Invention

[0003] The object of the present invention is to install a staircase walkway elevator with a simple structure, capable of direct access, safe and convenient to use in the available space of the stairway, without changing the structure of the existing building and without affecting the normal travel of residents, under the premise of using the existing conditions that the floor heights of the same building are basically equal and the stair structures of different buildings are generally the same, to help the residents in multi - storey buildings without elevators solve the problems of people traveling and goods going up and down the stairs. At the same time, it is necessary to solve the design of the supporting devices with special functions required for the production of this elevator and related technical problems.

[0004] To achieve the above - mentioned target tasks, the technical solution of the present invention is as shown in the attached drawings Figure 1As shown, around the central handrail 4 of a typical residential building staircase, two parallel, flat, spiral T-shaped tracks are vertically installed from the ground floor to the top floor. The guide surfaces of these two tracks face each other, clamping the elevator trolley and cargo platform assembly 11, equipped with follow-up three-roller guide shoes and a moving clamp-type fixed-rail brake, between the two tracks. Under the control of the elevator trolley's vertically upward traction drive and control mechanism 12 or its self-drive and control mechanism, the elevator trolley and cargo platform assembly 11 are driven to move up and down along the two parallel tracks, transporting personnel and goods to the destination floor. This elevator has a simple structure, requires less stringent installation conditions, can directly reach the target floor, and is economical, safe, and convenient to use.

[0005] The present invention will be further described below with reference to the accompanying drawings and the implementation method in the double-flight parallel staircase, which is currently the most numerous and widely used type of staircase in residential buildings. Attached Figure Description

[0006] Figure 1 Schematic diagram of the overall structure of a vertical, flat, spiral, double-track staircase elevator (traction-driven type).

[0007] Figure 2 Schematic diagram of a vertical, flat, spiral-shaped, double-track staircase elevator (traction-driven type).

[0008] Figure 3 , Figure 2 AA section view

[0009] Figure 4 Schematic diagram of a vertical, flat, spiral, double-track staircase elevator (white-drive type).

[0010] Figure 5 , Figure 4 The BB.CC.DD cross-sectional view in the figure is a schematic diagram of the self-drive structure of a vertical, flat, oval, spiral double-track staircase elevator.

[0011] Figure 6 The structure and unfolded trajectory of the three-dimensional semi-circular helical steering guide rail (upper and lower) joint of the T-shaped guide rail are shown in the diagrams. A: Front view, B: Top view, C: Schematic diagram of the unfolded trajectory on the basic projection plane.

[0012] Figure 7 A schematic diagram of the structure of a follow-up three-roller guide shoe.

[0013] Figure 8 A schematic diagram of the structure of a moving caliper fixed rail brake.

[0014] Figure 9A schematic diagram of the structure and unfolded trajectory of a three-dimensional semi-circular helical steering external rack. A: Front view, B: Top view, C: Schematic diagram of the unfolded trajectory on the basic projection plane. Detailed Implementation

[0015] The overall structure of the upright, flat, spiral-shaped, double-track staircase elevator is as follows: Figure 1 As shown, it consists of three parts: a vertical flat-round spiral double track device 1 to 10, an elevator trolley and cargo platform assembly 11, and a traction drive and control device 12 or a self-drive and control mechanism.

[0016] The structure of the upright, flat, spiral, double-track device is as follows: Figures 1 to 6 As shown, it consists of a track column 6, an upper straight track 7, a lower straight track 8, an upper joint 9 of a three-dimensional semi-circular spiral steering guide rail 10, a sleeper 13, a sleeper height adjustment bolt 14, a track inclination orientation plate 15, a track base plate 16, and a sleeper fastening bolt 28 installed on the base parts 1 to 5 of the stairwell.

[0017] Its two flat, round, spiral T-shaped tracks surround the central handrail 4 of the staircase, extending from the ground floor to the top floor of the building. Multiple track posts 6 provide support for the track posts 6, which are located at designated points on the stair treads 1, landings 2, and intermediate landings 3. These posts are perpendicular to the ground, and their height does not exceed the height of the handrail 4. The track posts 6 are vertically welded from channel steel bars and steel plate bases. A protective plate is installed at the upper end, and the lower steel plate base is fixed to the ground near the central handrail 4 using anchor bolts. These posts bear the vertical load and eccentric moment of the elevator. If the steel plate base is large enough, this eccentric moment can be balanced within the track posts 6. Two elliptical connection holes are opened in the middle of the column 6 to connect with the sleeper 13. The two are fastened together with two sleeper fastening bolts 28. The lower middle part of the column 6 is equipped with a height adjustment bolt 14 to adjust the height of the sleeper 13. The sleeper 13 is a C-shaped component made by vertically welding a smaller channel steel bar and steel plates at both ends. Its two end steel plates are the basis for installing T-shaped rails. The distance between the two end steel plates determines the distance between the two rails. Using the sleeper 13 to install two flat round spiral T-shaped rails can ensure that the two flat round spiral T-shaped rails are parallel vertically. Since the spiral rails maintain a spiral angle α with the horizontal ground, a rail inclination guide plate 15 is welded to each of the two end steel plates of the sleeper 13. A flat strip rail base plate 16 is fixedly installed on the rail inclination guide plate 15. In addition to fixing the T-shaped rails, the rail base plate 16 will also be distributed on different steps and platforms of the stairwell. The track columns 6 are connected together; two T-shaped tracks are fixedly installed on the track base plate 16, with the two tracks arranged vertically and parallel to the ground. Each T-shaped track has a guide top surface and two guide sides at its tongue. The guide top surfaces of the upper and lower guide rails are arranged opposite each other. Each flat-round spiral T-shaped guide rail consists of an inclined straight track 7 or 8 installed above the stair step 1. At both ends of the inclined straight track 7 or 8, three-dimensional semi-circular spiral turning guide rail joints 9 and 10 are respectively connected to the floor platform 2 and the intermediate platform 3. The other ends of these two three-dimensional semi-circular spiral turning guide rail joints 9 and 10 are then connected to the straight track 7 and 8 of the next floor or the previous floor, respectively. This continues from the ground floor to the top floor, forming two parallel and continuous flat-round spiral T-shaped track devices. The structure of the three-dimensional semi-circular spiral turning guide rail joint is as follows: Figure 6 As shown, its horizontal projection B is a semi-circular arc. Its trajectory C after unfolding on the basic projection plane is an inclined straight line. The inclination angle of this inclined straight line is the same as the inclination angle between the straight tracks 7 and 8 and the horizontal ground. This inclination angle is the spiral angle α of the entire flat-circular spiral T-shaped track. This upright flat-circular spiral double track device allows the elevator trolley and the carrier platform assembly 11 with three sets of follow-up 3-roller guide shoes to move straight up and down and back and forth along the two tracks without any obstacles. It can also run from one end of the track to the other end of the track.

[0018] An elevator trolley and carrying platform assembly 11, which can operate in a vertical flat-round spiral double-track device, consists of an elevator trolley square tube body 20, an elevator trolley upper track guide shoe 21, an elevator trolley lower track upper guide shoe 22, an elevator trolley lower track lower guide shoe 23, an elevator trolley carrying platform upright plate 17, an elevator trolley carrying cross pin 24, a retractable carrying platform 18, a carrying platform upright plate handrail 19, a carrying platform upright plate control button 59, a moving clamp fixed rail brake 26, and elevator trolley square tube body and carrying platform upright plate fastening bolts 25.

[0019] The elevator trolley's square tube body 20 is made of thick steel plate. Its central axis is located in the middle of two parallel T-shaped tracks and is parallel to the track guide surface. Centered on the elevator trolley's square tube body 20, an upper track guide shoe 21 is installed at the upper end of the upper plane of the square tube body 20, and a moving clamp fixed rail brake 26 is installed at the lower end. They are all fastened to the trolley's square tube body 20 as one unit by four fastening bolts. The two side guide rollers of the upper track guide shoe 21 "meet" with the tongue of the upper guide rail. On the lower plane of the square tube 20, a lower elevator trolley... The guide shoe 22 on the upper track and the guide shoe 23 on the lower track of the elevator trolley simultaneously "engage" with the tongue of the lower track. There is sufficient turning clearance between guide shoes 22 and 23, allowing them to be installed close together to ensure that the upright plate 17 of the supporting platform does not interfere with the guide rail during curved operation. Guide shoe 21 is located on the perpendicular bisector of the horizontal distance between guide shoes 22 and 23. These three sets of guide shoes 21, 22, and 23, along with the three "engagement points" of the upper and lower T-shaped guide rails, form a planar triangle. The centerline of the elevator trolley's supporting cross pin 24 lies within this triangle. At the center of gravity; the elevator trolley bearing cross pin 24 passes through the front and rear walls of the bearing platform upright plate 17 and the elevator trolley square tube body 20, connecting the bearing platform upright plate 17 and the elevator trolley square tube body 20 together, and is then secured by two bearing platform upright plate fastening bolts 25; the lower end of the bearing platform upright plate 17 is equipped with a retractable bearing platform 18, and the upper part of the bearing platform upright plate is equipped with a handrail 19 and a control switch button 59; the three sets of guide shoes 21, 22, and 23 installed on the elevator trolley square tube body 20 are all follow-up 3-roller guide shoes, which work by passing through 3 The rollers "meet" with the three guide surfaces of the tongue of the T-shaped track; unlike ordinary 3-roller guide shoes which can only run on straight tracks, the follower-type 3-roller guide shoes are equipped with follower steering bearings. In addition to reducing frictional resistance during mutual movement, these guide shoes can also enable the 3-roller guide shoes to automatically turn and run on curved tracks; when the elevator trolley and the carrying platform assembly 11 are installed in the upright flat-round spiral T-shaped double track device, under the clamping of the two guide rails, the elevator trolley and the carrying platform assembly (11) can run freely along these two parallel flat-round spiral T-shaped guide rails, and can also automatically run from the top of the track to the bottom of the track by means of its own weight under the action of gravity and horizontal component force.

[0020] Based on this performance, if an upward traction force is applied to the elevator trolley and passenger platform assembly 11, the elevator trolley and passenger platform assembly 11 can also move upward along the track to the designated floor. This is the basis for the upward traction drive and control technology scheme that this elevator can adopt.

[0021] The elevator drive and control device of the present invention has two structural forms: the first is an upward traction drive and control type, and the second is a self-driven drive and control type.

[0022] The structure of the upward traction drive and control device is as follows: Figures 1 to 3 As shown, a traction drive and control device 12 is installed at the top of the staircase, and a traction hook device 27 is installed at the top of the upright plate 17 of the support platform. The two are connected by a traction rope 62 passing through the vertical stairwell space surrounded by the middle handrail of the staircase. The control switch button 59 on the upper part of the upright plate 17 of the support platform can control the operation of the elevator. There are many mature technical solutions for this upward traction drive and control device for elevator operation. The relevant technology in the patent ZL201710230650.9"External rotating elevator that can operate in the stairwell" can be adopted, which will not be repeated here. This technical solution is feasible as long as the stairwell space surrounded by the middle handrail of the staircase has a width that can freely pass through the diameter of the traction rope. Otherwise, only the second type of drive and control solution can be adopted.

[0023] The structure of a self-driven drive and control device, such as Figures 4 to 5 As shown: It consists of two parts. The first part is the active part that outputs power and generates motion, and the second part is the fixed part that bears the load and generates reverse driving force. They are connected by gear and rack transmission or sprocket and chain transmission to realize the self-driving and control function of the elevator trolley and the passenger platform assembly 11.

[0024] Taking the gear and rack transmission relationship as an example: its first part of the structure is that on the plate surface of the self-driven bearing platform upright plate 35 with an enlarged plate surface, on the side of the plate surface of the retractable bearing platform 18, a self-driven power control box 29 with a lithium battery or external power supply is installed; the self-driven motor 30 and the self-driven drive gear 31 are fixedly installed with motor fastening bolts 36; the self-driven bridge gear 32 and its bearing seat 37 are fixedly installed on the side of the self-driven motor 30 near the lower guide shoe 23 of the lower track;

[0025] Its second fixed structure is as follows: the flat guide rail base plate under the T-shaped lower rail is replaced with a ⊥-shaped guide rail base plate 34, and it is placed horizontally with its bottom plane facing outward. The rail side rack rail 61 is fixedly installed on the outer bottom plane of the ⊥-shaped guide rail base plate 34. The rail side rack rail 61 consists of a rail side straight rack 33 and three-dimensional semi-circular spiral steering outer rack 60 installed at both ends. These two racks are connected to each other, forming the rail side rack rail 61 from the ground floor to the top floor of the building. Obviously, the rail side rack rail 61 is a third dedicated rack rail for transmitting power, which is also parallel to the two parallel flat round spiral T-shaped rails.

[0026] To ensure proper gear and rack transmission, the relative positions of the intermediate gear 32 mounted on the upright plate 35 and the rack track 61 meshing with it must meet the necessary conditions for gear and rack transmission. Therefore, the central axes of the self-driving motor 30 and the driving gear 31, the intermediate gear 32 and its bearing housing 37 mounted on the upright plate 35 must be perpendicular to the center line of the rack track 61. Furthermore, the radial working planes of the driving gear 31 and the intermediate gear 32 meshing with it must be aligned with the working plane of the rack track 61. The intermediate gear 32 is connected to the gear shaft via bearings, allowing it to rotate bidirectionally on the shaft. The intermediate gear shaft is fixedly connected to the bearing housing 37. Simultaneously, it meshes with the drive gear 31 and the rail-side rack and pinion track 61. In this transmission relationship, apart from the fact that the meshing parameters such as the tooth profile and module of the gear and rack are the same, the movement of the white-drive type bearing platform upright plate 35, which is equipped with the self-drive drive gear 31 and the bridge gear 32, is controlled by two flat round spiral T-shaped guide rails. Its range of motion is also limited by the movement clearance of the follower type three roller guide shoes. Therefore, the movement trajectory of the bridge gear 32 is consistent with the trajectory of the rail-side rack and pinion track 61. The variation of their center distance and tooth direction can be controlled and stabilized within the permissible range. This shows that this gear and rack transmission can meet the necessary conditions for gear and rack meshing transmission.

[0027] The structure of the three-dimensional semi-circular helical steering external rack 60 is as follows: Figure 9 As shown, the horizontal projection (B in the figure) of the three-dimensional semi-circular helical steering external rack 60 is a semi-circular arc. Its trajectory after unfolding on the basic projection plane (C in the figure) is an inclined straight line. The inclination angle of this inclined straight line is also the helix angle α of the entire flat-circular helical T-shaped track. Here, the straight rack 33 and the three-dimensional semi-circular helical steering external rack 60, which are two racks with different shapes, are connected end to end to form a new type of flat-circular helical rack track 61 fixed on the side of the flat-circular helical T-shaped lower guide rail. Although these two racks with different shapes are different, their gear parameters must be the same except for the pitch circle radius. The slight changes in their gear parameters at the joint must also be limited to the permissible range. Their trajectories after unfolding on the basic projection plane are all on the same inclined straight line. They are all externally meshing, and their tooth surfaces are all on the same flat-circular cylindrical surface. Obviously, the flat-circular helical T-shaped lower guide rails 8 and 10 and the new flat-circular helical rack track 61 are two fixed and parallel flat-circular helical tracks on the same flat-circular cylindrical surface. Their trajectories after unfolding on the basic projection plane are two parallel inclined straight lines, which provide the basic conditions for installing a self-driving and control device with gear and rack transmission in this elevator.

[0028] When the self-driven motor 30 rotates under the control of the power control box 29 and the control switch button 59, the drive gear 31 will drive the bridge gear 32 meshing with it to rotate. Since the bridge gear 32 also meshes with the rail side rack 61 at the same time, and the rail side rack 61 is fixed on the stationary U-shaped track base plate 34, the rail side rack 61 will generate a counter-pushing force on the bridge gear 32. The bridge gear 32 transmits this counter-pushing force to the upright plate 35 of the support platform connected to it through the bridge gear bearing seat 37. Under the push of this force, the upright plate 35 of the support platform will drive the entire elevator trolley and the support platform assembly 11 to move up and down along the two T-shaped tracks, transporting personnel and materials to the designated floor.

[0029] The conditions for sprocket and chain transmission are basically the same as those for gear and rack transmission. The difference is that in order to realize sprocket and chain transmission, the intermediate bridge gear (32) must be replaced with a sprocket. A [-shaped chain guide groove] must be installed at the rack installation location to fix the chain and limit the chain's side suspension. A chain tensioning mechanism must also be installed at the three-dimensional semi-circular spiral turning chain guide grooves at both ends of the straight guide rail.

[0030] Three sets of follow-up three-roller guide shoes 21 to 23 are installed on the square tube body 20 of the elevator trolley, such as Figure 7 As shown, they are all composed of a U-shaped guide shoe frame 38, a top guide roller 39, a left guide side roller 40, a right guide side roller 41, a left guide side roller frame 42, a right guide side roller frame 43, a follower steering bearing spindle 44, a follower steering radial thrust bearing 45, and a follower steering radial thrust bearing seat / guide shoe base plate 46. On the left and right side plates of the U-shaped guide shoe frame 38, two side roller frames 42 and 43 are fixedly installed with bolts. The left and right rollers (40) and (41) are respectively installed in the left and right side roller frames (42) and (43). The left and right side plates of the U-shaped guide shoe frame 38 have openings in the middle for the side rollers 40 and 41 to pass through. The left and right side rollers 40 and 41 clamp the tongue of the T-shaped guide rail from the two sides through these openings. The top guide roller 39 is installed at the top of the inner cavity of the U-shaped guide shoe frame 38. At the intersection of the radial symmetry center line of the guide top roller 39 and the U-shaped guide shoe skeleton 38, a coaxial follower steering bearing spindle 44 is welded and installed. It fits tightly with the inner hole of the follower steering radial thrust bearing 45. The bearing seat and follower guide shoe base plate 46 of the follower steering radial thrust bearing 45 is installed and fixed. It is fixed to the elevator trolley square tube body 20 by four bolts. This constitutes a follower-type three-roller guide shoe. This follower-type three-roller guide shoe can not only run on T-shaped straight tracks, but also automatically follow the curve and turn on curved tracks.

[0031] The movable clamp fixed rail brake 26 is installed on the square tube body 20 of the elevator trolley, such as... Figure 8 As shown, it consists of a brake base plate 47, a splined shaft 50, a shaft-driven brake caliper 52, a wheel-driven brake caliper 53, a splined shaft drive plate 51, a splined shaft support 48, a camshaft support 49, a brake cam 54, a camshaft 55, a brake handle 56, a tension spring 57, and an arc-shaped friction brake block 58.

[0032] Its distinguishing feature is that its brake base plate 47 is fixedly connected to two splined shaft supports 48 and two camshaft supports 49 to form an integral unit. The splined shaft 50 can only move axially in the splined holes of the two splined shaft supports 48, but cannot rotate. A splined shaft drive plate 51 that can drive the splined shaft 50 to move axially is splinedly mounted on the splined shaft 50. Two brake calipers 52 and 53 are also connected. The splined shaft drive plate 51 and the shaft-driven brake caliper 52 driven by the splined shaft are fixedly connected to the splined shaft 50. They can move axially relative to the brake base plate 47, but cannot rotate around the axis. The wheel-driven brake caliper 53, directly driven by the brake cam 54, can move axially along the axis of the splined shaft 50 on the splined shaft. Brake calipers 52 and 53 Located on either side of the tongue of the upper elevator track 7, the gap between them and the tongue of the upper track 7 is controlled by the rotation angle and position of the brake cam 54. The brake cam 54 is located between the spline shaft drive plate 51 and the wheel drive brake caliper 53. One end of the tension spring 57 is connected to the spline shaft drive plate 51, and the other end is connected to the wheel drive brake caliper 53, so that the spline shaft drive plate 51 and the wheel drive brake caliper 53 are pressed against the surface of the brake cam 54. The working curve of the brake cam 54 is elliptical. The brake cam 54 and the brake handle 56 are both fixed on the camshaft 55. The outer end of the brake handle 56 extends out of the plate surface through the working hole on the upright plate 17 or 35 of the support platform, and passengers can manually control its rotation angle and direction. When the brake handle 56 is turned to the left, the long axis of the elliptical cam 54 will pull the spline shaft drive plate 51... When the distance between the wheel-drive brake caliper 52 and the wheel-drive brake caliper 53 increases, the spline shaft drive plate 51, driven by the spline shaft 50, moves the brake caliper 52 to the right, while the wheel-drive brake caliper 53 moves to the left under the direct push of the brake cam 54. Both brake calipers simultaneously press against the two sides of the upper guide rail 7 tongue. Under the action of the friction brake block 58, the stationary upper guide rail 7 generates a friction braking force on the moving brake and the fixed brake elevator trolley square tube body 20. The magnitude of the braking force is directly proportional to the force applied to the brake handle. When the brake handle 56 rotates to the right, the short axis of the elliptical brake cam 54 faces the spline shaft drive plate 51 and the wheel-drive brake caliper 53. Under the tension of the tension spring 57, the shaft-drive brake caliper 52 and the wheel-drive brake caliper 53 simultaneously move away from the two sides of the upper guide rail 7 tongue, releasing the braking process. The operation of the brake handle can also be achieved using an electric control method.

[0033] As described above, the elevator structure of this invention utilizes several new technologies, such as a vertical double-track clamping system for the elevator trolley, a three-point support system for the elevator trolley running on a vertical flat-round spiral double track, a follow-up three-roller guide shoe, a moving clamp fixed-track brake, a three-dimensional semi-circular spiral steering guide rail joint for the T-shaped guide rail, a flat-round spiral rack and pinion track and gear and rack transmission device, a three-dimensional semi-circular spiral steering external rack, and a flat-round spiral chain track and sprocket-chain transmission device. Each of these new technologies has its own unique function. From a production technology perspective, these products can generally be produced by specialized factories and ordinary technicians using existing mature technologies. To facilitate the promotion and application of the results of this invention, the following points are provided:

[0034] (1) In this invention, the size of the helix angle of the flat circular spiral track is an important technical parameter. Its size is similar to, but not the same as, the inclination angle of the staircase steps. It is necessary to measure and calculate the floor height of the existing building, the structure of the staircase, and the track parameters. The specific method is as follows: the inclination of a slope is usually represented by the tangent of the angle between two slopes. Here, the slope of the helix angle of the flat circular spiral track can be expressed as: log a=H / (2L+πD) (refer to the symbols in the formula). Figure 1 (The value in parentheses represents the total horizontal projection length of one track per floor).

[0035] In the formula: a: the helix angle of the spiral track; H: the height of one floor; L: the horizontal projection length of the staircase steps; D: the semicircular diameter of the horizontal projection of the three-dimensional semicircular spiral turning guide joint, which can be taken as the horizontal distance between the middle handrails of the upper and lower steps of the double-flight staircase, plus a working gap of about 40mm.

[0036] (2) In the flat-round spiral T-shaped track of the elevator of the present invention, the processing of the three guide surfaces of the three-dimensional semi-circular spiral steering guide joint of the T-shaped guide rail requires special machine tools and equipment if processed individually. If digital manufacturing technology is used, it can be easily solved, but the cost is high. Here is a simple method: the three guide surfaces of the three-dimensional semi-circular spiral steering guide joint can be obtained more easily by using the straight cutting method of thick-walled round tube. The specific processing method is as follows: use a smooth round tube or semi-circular tube with a wall thickness equal to the thickness of the tongue of the T-shaped guide rail. The diameter of the round tube is equal to the diameter of the semi-circle projected on the horizontal projection plane of the three-dimensional semi-circular spiral steering guide joint. Draw an inclined straight line with a spiral angle α to the plane of the diameter of the round tube on the outer wall of the round tube. Cut the semi-circular tube wall along this inclined straight line in a direction perpendicular to the central axis of the round tube. The cut surface together with the semi-circular tube wall on both sides of the cut constitutes the three guide surfaces of the three-dimensional semi-circular spiral steering guide joint.

[0037] (3) Using the same method as above, a three-dimensional semi-circular helical steering outer rack 60 in a flat circular helical rack track can be produced. The outer rack blank can be processed first using this method, and then involute gear teeth can be processed on the outer surface of the blank. Alternatively, involute helical teeth can be processed on the outer wall of the round tube first, and then cut into racks.

[0038] The elevator of this invention has a simple, independent, and complete overall structure, forming a self-contained system. Its application and installation are subject to few external restrictions, allowing for widespread application in most existing residential buildings. Installation does not require alteration of the existing building structure, and disassembly, relocation, and reuse are all convenient. It is also suitable for use in narrow alleyways. The elevator of this invention is guided by rails, ensuring smooth operation and low frictional resistance. It can directly reach the target floor, is convenient to use, economical, and safe. The main supporting components can be professionally, standardized, and serially produced, resulting in low costs and enabling widespread application.

Claims

1. A vertical flat-round spiral double-track staircase elevator, which consists of two parallel flat-round spiral T-shaped double-track devices erected vertically around the handrail in the middle of the staircase from the bottom floor to the top floor of the building, an elevator trolley and a load-bearing platform assembly (11), and an elevator trolley self-drive and control mechanism. Its features are, The flat-round spiral T-shaped double track device consists of track columns (6), upper straight track (7), lower straight track (8), upper joint of three-dimensional semi-circular spiral steering guide rail (9), lower joint of three-dimensional semi-circular spiral steering guide rail (10), sleeper (13), sleeper height adjustment bolt (14), track inclination orientation plate (15), and sleeper fastening bolt (28). The upper straight track (7) and the lower straight track (8) both include a track base plate (16) and a flat-round spiral T-shaped track with a T-shaped cross section. The flat-round spiral T-shaped tracks on the upper straight track (7) and the lower straight track (8) are arranged vertically and parallel to each other. The tongue of each flat-round spiral T-shaped track has one guide top surface and two guide side surfaces. The guide top surfaces of the two flat-round spiral T-shaped tracks are arranged opposite each other. The elevator trolley and carrying platform assembly (11) consists of an elevator trolley square tube body (20), elevator trolley upper rail guide shoe (21), elevator trolley lower rail upper guide shoe (22), elevator trolley lower rail lower guide shoe (23), self-driven carrying platform upright plate (35), elevator trolley carrying cross pin (24), retractable carrying platform (18), carrying platform upright plate handrail (19), carrying platform upright plate control button (59), moving clamp fixed rail brake (26), and elevator trolley square tube body and carrying platform upright plate fastening bolts (25); The elevator trolley upper track guide shoe (21), elevator trolley lower track upper guide shoe (22), and elevator trolley lower track lower guide shoe (23) are all follow-up three-roller guide shoes; The self-drive and control mechanism of the elevator trolley includes a self-drive power control box (29), a self-drive motor (30), a drive gear (31), a bridge gear (32), a rail-side straight rack (33), a T-shaped guide rail base plate (34), a motor fastening bolt (36), a bearing seat (37), a three-dimensional semi-circular spiral steering external rack (60), and a rail-side rack track (61); The guide top surfaces of the two parallel flat-round spiral T-shaped tracks face each other. The elevator trolley and the carrier platform assembly (11) are combined with the two parallel flat-round spiral T-shaped tracks through three sets of follow-up three-roller guide shoes and moving clamp fixed rail brake (26), so that the elevator trolley and the carrier platform assembly (11) are clamped between the upper straight track (7) and the lower straight track (8). Through the operation of the elevator trolley self-drive and control mechanism, the elevator trolley and the carrier platform assembly (11) are driven to run up and down along the two parallel flat-round spiral T-shaped tracks, transporting personnel and materials to each designated floor.

2. The vertical, flat-oval spiral double-track staircase elevator according to claim 1, characterized in that, The track column (6) is made of channel steel and steel plate base welded vertically. It is equipped with a protective plate at the upper end and the steel plate base at the lower end is fixed to the ground of the stairwell on one side of the handrail (4) in the middle of the corridor by anchor bolts. There are two oval connection holes in the middle of the track column (6) that are connected to the sleeper (13). The sleeper (13) and the track column (6) are fastened together by sleeper fastening bolts (28). The lower middle part of the track column (6) is equipped with height adjustment bolts (14) to adjust the height of the sleeper (13). The sleeper (13) is made of channel steel and steel plates at both ends vertically welded to form a U-shaped component. Each of the steel plates at both ends of the sleeper (13) is welded with a track inclination orientation plate (15). The track base plate (16) is fixedly installed on the track inclination orientation plate (15). The flat round spiral T-shaped track is fixedly installed on the track base plate (16). The two ends of the inclined upper straight track (7) and lower straight track (8) are respectively connected to one end of the three-dimensional semi-circular spiral steering guide upper joint (9) and the three-dimensional semi-circular spiral steering guide lower joint (10) located above the floor platform (2) and the intermediate platform (3). The other ends of the three-dimensional semi-circular spiral steering guide upper joint (9) and the three-dimensional semi-circular spiral steering guide lower joint (10) are then connected to the upper straight track (7) and the lower straight track (8) of the next floor or the previous floor, respectively. In this way, the flat round spiral T-shaped track device is formed from the bottom floor to the top floor of the building.

3. The vertical, flat-oval spiral double-track staircase elevator according to claim 1, characterized in that, The central axis of the elevator trolley square tube body (20) is located in the middle of the inclined upper straight track (7) and lower straight track (8), and is parallel to the guide surface of the two flat round spiral T-shaped tracks; an elevator trolley upper track guide shoe (21) is installed on the upper end of the upper plane of the elevator trolley square tube body (20) by fastening bolts, and a moving clamp fixed rail brake (26) is installed on the lower end of the upper plane of the elevator trolley square tube body (20) by fastening bolts; the two side guide rollers of the elevator trolley upper track guide shoe (21) are connected to the upper straight track (7) and the three guide rollers at both ends. The tongues of the upper joint (9) and the lower joint (10) of the three-dimensional semi-circular spiral steering guide rail are "engaged" on both sides; the lower plane of the elevator trolley square tube body (20) is equipped with the upper guide shoe (22) and the lower guide shoe (23) of the elevator trolley lower track. The upper guide shoe (22) and the lower guide shoe (23) of the elevator trolley lower track are "engaged" with the tongues of the upper joint (9) and the lower joint (10) of the three-dimensional semi-circular spiral steering guide rail at both ends of the lower straight track (8); A turning gap is left between the upper guide shoe (22) and the lower guide shoe (23) of the lower track. The upper guide shoe (21) of the trolley is located on the perpendicular bisector of the horizontal distance between the upper guide shoe (22) and the lower guide shoe (23) of the lower track. Thus, the three "meshing points" of the upper guide shoe (21), the upper guide shoe (22), and the lower guide shoe (23) of the elevator trolley with the upper straight track (7) and the lower straight track (8) form a planar triangle. The center line of the cross pin (24) of the elevator trolley is located in the above triangle. At the center of gravity of the shape, the elevator trolley bearing cross pin (24) passes through the front and rear walls of the self-driven bearing platform upright plate (35) and the elevator trolley square tube body (20), connecting the self-driven bearing platform upright plate (35) and the elevator trolley square tube body (20) together, and then is fastened by the bearing platform upright plate fastening bolt (25). The lower end of the self-driven bearing platform upright plate (35) is equipped with a retractable bearing platform (18), and the upper part of the self-driven bearing platform upright plate (35) is equipped with a handrail (19) and a control switch button (59).

4. The vertical, flat-oval spiral double-track staircase elevator according to claim 1, characterized in that, The power control box (29) of the self-drive and control mechanism is installed on the upright plate (35) of the self-drive bearing platform. The self-drive motor (30) is fixedly installed on the upright plate (35) of the self-drive bearing platform by motor fastening bolts (36). The self-drive drive gear (31) is installed on the output end of the self-drive motor (30). The bearing seat (37) of the bridge gear (32) is fixedly installed on the upright plate (35) of the self-drive bearing platform. The track base plate (16) of the lower straight track (8) is a horizontally placed T-shaped guide rail base plate (34). A rail-side rack and pinion track (61) is fixedly installed on the outer bottom plane of the T-shaped guide rail base plate (34). The rail-side rack and pinion track (61) is a flat, round spiral rail-side rack and pinion track (61) consisting of two types of racks, a rail-side straight rack (33) and a three-dimensional semi-circular spiral steering outer rack (60) installed at both ends, connected in succession from the bottom floor to the top floor of the building. The rail-side rack and pinion track (61) is parallel to two parallel flat, round spiral T-shaped tracks. The bridge gear (32) meshes with the drive gear (31) and the rail-side rack and pinion track (61) at the same time. The central axes of the self-driven motor (30), drive gear (31), bridge gear (32), and bearing housing (37) mounted on the self-driven bearing platform upright plate (35) are all perpendicular to the center line of the rail side rack track (61). The radial working planes of the drive gear (31) and the bridge gear (32) meshing with it are aligned with the working plane of the rail side rack track (61).

5. A vertical, flat-oval spiral double-track staircase elevator according to claim 1, characterized in that, The follow-up three-roller guide shoe is composed of a U-shaped guide shoe frame (38), a guide top surface roller (39), a guide side left roller (40), a guide side right roller (41), a guide side left roller frame (42), a guide side right roller frame (43), a follow-up steering bearing spindle (44), a follow-up steering radial thrust bearing (45), and a guide shoe base plate (46); The left guide roller frame (42) and the right guide roller frame (43) are bolted to the left and right side plates of the U-shaped guide shoe frame (38). The left guide roller (40) and the right guide roller (41) are respectively installed in the left guide roller frame (42) and the right guide roller frame (43). The top guide roller (39) is installed at the top of the inner cavity of the U-shaped guide shoe frame (38). A coaxial follower steering bearing spindle (44) is welded and installed at the outer surface of the intersection of the radial symmetry center line of the top guide roller (39) and the U-shaped guide shoe frame (38). The follower steering radial thrust bearing (45) is installed in the bearing hole of the guide shoe base plate (46). The follower steering bearing spindle (44) is installed in the center hole of the follower steering radial thrust bearing (45). The guide shoe base plate (46) is bolted to the elevator trolley square tube body (20).

6. A vertical, flat-oval spiral double-track staircase elevator according to claim 1, characterized in that, The moving caliper fixed rail brake (26) consists of a brake base plate (47), a spline shaft (50), a shaft-driven brake caliper body (52), a wheel-driven brake caliper body (53), a spline shaft drive plate (51), a spline shaft support (48), a camshaft support (49), a brake cam (54), a camshaft (55), a brake handle (56), a tension spring (57), and an arc-shaped friction brake block (58). The brake base plate (47) is fixedly connected to the spline shaft support (48) and the camshaft support (49) to form a whole. The spline shaft (50) is slidably installed in the spline hole of the spline shaft support (48), and the camshaft (55) is installed in the bearing hole of the camshaft support (49). The spline shaft drive plate (51) and the shaft drive brake caliper (52) are both fixedly connected to the spline shaft (50), and the wheel drive brake caliper (53) is slidably connected to the spline shaft (50). The shaft drive brake caliper (52) and the wheel drive brake caliper (53) are respectively located on both sides of the tongue of the upper straight track (7). The cam profile curve of the brake cam (54) is elliptical. The brake cam (54) is located on the spline hole of the spline shaft support (48). Between the key shaft drive plate (51) and the wheel drive brake caliper (53), one end of the tension spring (57) is connected to the spline shaft drive plate (51), and the other end of the tension spring (57) is connected to the wheel drive brake caliper (53), so that the spline shaft drive plate (51) and the wheel drive brake caliper (53) are pressed against the surface of the brake cam (54). The brake cam (54) and the brake handle (56) are both fixed on the camshaft (55). Arc-shaped friction brake blocks (58) are installed on both the shaft drive brake caliper (52) and the wheel drive brake caliper (53). The outer end of the brake handle (56) passes through the working hole on the self-driving bearing platform upright plate (35) and extends to its outside.

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