Household elevator and weight balancing system

Abstract

The invention relates to the technical field of elevator weight balancing, and discloses a home elevator and a weight balancing system. A guide rail assembly is fixed in an elevator shaft through a clamping and fixing assembly; the clamping and fixing assembly comprises a connecting base assembly fixed to the rear wall of the elevator shaft and a sleeving assembly connected to the connecting base assembly in a sleeving mode, and a clamping assembly and a clamping assembly which are driven by a screw are arranged on a sleeving frame of the sleeving assembly. A lifting counterweight assembly is connected between the two symmetrical parallel guide rail assemblies in a sliding mode. The clamping assemblies and the clamping assemblies are synchronously driven through the screws, the installation speed of the multiple sets of guide rail units is increased, the installation difficulty is reduced, the damaged units can be conveniently and independently replaced during later maintenance, the defect that a traditional welding structure needs to be integrally replaced is overcome, and the maintenance cost is reduced. According to the guide rail assembly, the multiple guide rail units are in up-down butt joint through the clamping and fixing assemblies, the axial offset of the adjacent guide rail units is smaller than or equal to 0.3 mm, the radial inclination angle is smaller than or equal to 0.1 degree, and the splicing error is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator weight balance, in particular to a household elevator and weight balance system. BACKGROUND

[0002] In the elevator weight balance system, the connection stability of the guide rail and the elevator shaft and the guiding accuracy of the guide rail itself directly affect the sliding stability of the lifting counterweight assembly. The traditional technology has the following defects: The installation accuracy of the guide rail assembly is low, and the splicing error is large: The traditional guide rail is fixed in a single section or spliced by simple bolts, and the butt joint of adjacent guide rails is prone to axial deviation (the deviation is often 2-3mm) or radial tilt (the angle deviation is >1°). Such splicing error causes the lifting counterweight assembly to produce jamming when sliding, and even causes rigid friction between the guide rail and the lifting counterweight assembly, which not only increases the running noise (>70dB), but also aggravates the wear of the components and shortens the service life. The fixing operation of the guide rail assembly is complicated, which increases the construction difficulty, and the fixing effect of the guide rail assembly is not good, which makes the lifting counterweight assembly deviate from the sliding track and produces shaking, and it is difficult to disassemble and replace during later maintenance, which increases the maintenance cost. Therefore, we launch a household elevator and weight balance system. SUMMARY

[0003] The purpose of the present application is to provide a household elevator and weight balance system to solve the problems raised in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A weight balance system comprises two symmetrical groups of parallel guide rail assemblies, which are fixed in the elevator shaft by clamping and fixing assemblies; The clamping and fixing assembly comprises a connecting seat assembly fixed on the rear wall of the elevator shaft and a sleeve assembly sleeved on the connecting seat assembly, and the sleeve frame of the sleeve assembly is provided with a clamping assembly and a clamping assembly driven by a screw rod; The lifting counterweight assembly is slidably connected between the two symmetrical groups of parallel guide rail assemblies; The guide rail assembly comprises a plurality of guide rail units fixed in an upper and lower manner by the sleeve assembly; After the screw rod is locked, the clamping assembly fixes the sleeve frame on the connecting seat assembly, and the clamping assembly fixes the guide rail unit at one end on the sleeve frame.

[0005] Preferably, the connecting seat assembly comprises a mounting seat fixed on the rear wall of the elevator shaft by bolts and a T-shaped insertion block integrally formed on one side of the front end of the mounting seat, and the T-shaped insertion block is inserted into the insertion slot in the sleeve frame.

[0006] Preferably, the middle part of the inner side of the sleeve frame is provided with a mounting slot communicated with the plug-in slot, and the middle part of the inner side of the mounting slot is provided with a vertical plate; The clamping assembly comprises a slider centrally sliding in the inner part of the mounting slot, horizontal rods arranged above and below in the mounting slot, a rotating drum sleeved on the outer side of the horizontal rods, a clamping drum fixed on both ends of the rotating drum by connecting arms, and a U-shaped bracket centrally arranged on the inner side of the rotating drum. The slider is provided with two groups of inclined slots arranged above and below, and the pin rod in the inner part of the U-shaped bracket penetrates through the corresponding inclined slots. The screw rod penetrates through the reserved hole in the middle part of the vertical plate, the middle part of the slider is provided with an internal thread hole for screwing the screw rod, and the inner side of the T-shaped plug block is provided with a plug-in hole for inserting the screw rod.

[0007] Preferably, the slider and the vertical plate are connected with a reset spring sleeved on the outer side of the screw rod.

[0008] Preferably, the clamping assembly comprises vertical rods symmetrically arranged in front and back in the inner part of the mounting slot, a gear fixed in the middle part of the vertical rod, a first horizontal gear rack fixed on the front and back side walls of the slider, a vertical clamping plate on the inner side of the sleeve frame, and a second horizontal gear rack arranged on the front and back side edges of the middle part of the vertical clamping plate. The gear is engaged between the first horizontal gear rack and the second horizontal gear rack on the same side.

[0009] Preferably, the guide rail unit comprises a vertical butt joint plate, a convex plate arranged on the front end of the vertical butt joint plate, and a vertical U-shaped groove seat fixed on the inner side of the convex plate. The inner side of the sleeve frame is symmetrically provided with clamping grooves for inserting one end of the vertical butt joint plate at the upper and lower ends, and the side edges of the vertical clamping plate are symmetrically provided with two groups of square protrusions arranged above and below, and the side edges of both ends of the vertical butt joint plate are provided with square inner grooves for clamping the square protrusions.

[0010] Preferably, the lifting counterweight assembly comprises a lifting frame, a plurality of groups of counterweight blocks arranged in the limiting groove in the inner part of the lifting frame, steel rope guide wheels symmetrically arranged on both sides of the top of the limiting groove, U-shaped sliding seats symmetrically fixed on the side edges of the lifting frame above and below, and two groups of rollers arranged on the side edges of the lifting frame. The U-shaped sliding seat is clamped on the outer side of the vertical U-shaped groove seat, and the rollers are tightly attached to the inner wall of the vertical U-shaped groove seat.

[0011] In addition, in order to achieve the above-mentioned purpose, the present application also provides a household elevator comprising the weight balance system.

[0012] Compared with the prior art, the present application has the following advantages: the present application synchronously drives the clamping assembly and the clamping assembly by the screw rod, improves the installation speed of the plurality of guide rail units, reduces the installation difficulty, and the detachable connection of the guide rail unit and the clamping and fixing assembly facilitates the replacement of the damaged unit during the later maintenance, avoids the disadvantages of the traditional welding structure which needs to be replaced as a whole, and reduces the maintenance cost.

[0013] The clamping cylinder of the clamping assembly is tightly clamped to the T-shaped block, the square protrusion of the clamping assembly is clamped into the square inner groove of the vertical butt joint plate, a "double locking" is formed, the rigidity of the connection between the guide rail assembly and the elevator shaft 1 is improved, displacement of the guide rail assembly caused by vibration is avoided, lateral swinging is effectively inhibited, the sliding verticality error of the lifting counterweight assembly is ≤0.5mm / m, and the operation noise is reduced to ≤55dB. The guide rail assembly adopts a plurality of guide rail units which are vertically butted through clamping and fixing assemblies, the upper and lower ends of the vertical U-shaped groove seat are in close contact, the positioning of the vertical butt joint plate is realized by cooperating with the clamping groove of the sleeve joint frame, the axial offset of the adjacent guide rail units is ≤0.3mm, and the radial inclination angle is ≤0.1°, so that the splicing error is significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping and fixing assembly, the guide rail assembly and the lifting counterweight assembly assembled; Figure 3 It is a schematic diagram of the exploded structure of the guide rail unit, the connecting seat assembly, the sleeve joint assembly and the lifting counterweight assembly assembled; Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting seat assembly; Figure 5 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly in the initial state; Figure 6 It is a schematic diagram of the structure of the gear installation; Figure 7 It is a schematic diagram of the exploded structure of the clamping assembly assembled; Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping assembly assembled; Figure 9 It is a schematic diagram of the three-dimensional structure of the connection between the second horizontal rack and the vertical clamping plate; Figure 10 It is a schematic diagram of the exploded structure of the sleeve joint assembly assembled; Figure 11 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; Figure 10 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; Figure 12 It is a schematic diagram of the structure of the connection between the screw rod, the clamping assembly and the clamping assembly; Figure 13 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; Figure 12 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; Figure 14 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; Figure 5 It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled; It is a schematic diagram of the three-dimensional structure of the sleeve joint assembly assembled;Figure 15 is a perspective view of the guide rail unit of the present application; Figure 16 is a perspective view of the guide rail unit of the present application; Figure 15 is a perspective view of the guide rail unit of the present application; Figure 17 is a perspective view of the lifting counterweight assembly of the present application; Figure 18 is a perspective view of the connection between the lifting counterweight assembly and the guide rail assembly of the present application; Figure 19 is a perspective view of the assembly of the clamping and fixing assembly and the upper and lower guide rail units of the present application; Figure 20 is a perspective view of the guide rail unit of the present application; Figure 19 is a sectional view of the guide rail unit of the present application.

[0015] In the figure: 1, elevator shaft; 2, clamping and fixing assembly; 201, connecting seat assembly; 2011, mounting seat; 2012, bolt; 2013, T-shaped plug; 2014, plug hole; 202, sleeve assembly; 20201, sleeve frame; 20202, plug slot; 20203, clamping groove; 20204, vertical clamping plate; 20205, screw rod; 20206, clamping cylinder; 20207, mounting groove; 20208, vertical plate; 20209, gear; 20210, vertical rod; 20211, connecting arm; 20212, rotating cylinder; 20213, U-shaped frame; 20214, horizontal rod; 20215, pin rod; 20216, sliding block; 20217, internal thread hole; 20218, first horizontal rack; 20219, inclined slot; 20220, return spring; 20221, avoidance through slot; 20222, second horizontal rack; 20223, square protrusion; 3, guide rail assembly; 301, guide rail unit; 3011, vertical butt joint plate; 3012, protruding plate; 3013, vertical U-shaped groove seat; 3014, square internal groove; 4, lifting counterweight assembly; 401, lifting frame; 402, counterweight block; 403, limiting groove; 404, steel rope guide pulley; 405, U-shaped sliding seat; 406, roller. DETAILED DESCRIPTION

[0016] 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Embodiment: Please refer to Figures 1-20 The present application provides a technical solution: A weight balance system, comprising two symmetrical groups of parallel guide rail assemblies 3, the guide rail assemblies 3 are fixed in the elevator shaft 1 by clamping and fixing assemblies 2; The clamping and fixing assemblies 2 comprise connecting seat assemblies 201 fixed on the rear wall of the elevator shaft 1 and sleeve assemblies 202 sleeved on the connecting seat assemblies 201; The connecting seat assemblies 201 comprise mounting seats 2011 fixed on the rear wall of the elevator shaft 1 by bolts 2012 and T-shaped plug blocks 2013 integrally formed on one side of the front end of the mounting seats 2011, the T-shaped plug blocks 2013 are inserted into plug-in grooves 20202 in sleeve frames 20201.

[0018] The upper and lower widths of the front end of the T-shaped plug block 2013 are consistent with the upper and lower widths of the plug-in groove 20202, and the left and right thicknesses of the front end of the T-shaped plug block 2013 are less than the left and right widths of the inner wall of the plug-in groove 20202, so that after the screw rod 20205 is locked, the upper and lower two clamping barrels 20206 of the clamping assembly can tightly fit the inner wall of the front end of the T-shaped plug block 2013, achieving clamping and fixing of the T-shaped plug block 2013 and the sleeve frame 20201.

[0019] The sleeve assembly 202 is provided with a clamping assembly and a clamping assembly driven by a screw rod 20205 on the sleeve frame 20201; The inner side of the sleeve frame 20201 is provided with a mounting groove 20207 in communication with the plug-in groove 20202, and the inner side of the mounting groove 20207 is provided with a vertical plate 20208; The clamping assembly comprises a sliding block 20216 centrally sliding in the mounting groove 20207, horizontal rods 20214 arranged above and below the mounting groove 20207, a rotating drum 20212 sleeved on the outer side of the horizontal rod 20214, clamping barrels 20206 fixed at both ends of the rotating drum 20212 by connecting arms 20211, and a U-shaped frame 20213 centrally arranged on the inner side of the rotating drum 20212; The upper and lower dimensions of the sliding block 20216 are consistent with the upper and lower inner wall dimensions of the mounting groove 20207.

[0020] The sliding block 20216 is provided with two sets of inclined grooves 20219, and a pin rod 20215 in the U-shaped frame 20213 penetrates through the corresponding inclined groove 20219; The screw rod 20205 penetrates through the reserved hole in the middle of the vertical plate 20208, the middle of the sliding block 20216 is provided with an internal thread hole 20217 for screwing the screw rod 20205, and the inner side of the T-shaped plug block 2013 is provided with a plug-in hole 2014 for inserting the screw rod 20205.

[0021] A reset spring 20220 is connected between the slider 20216 and the vertical plate 20208 and sleeved outside the screw rod 20205.

[0022] The clamping assembly includes vertical rods 20210 symmetrically arranged inside the mounting groove 20207, gears 20209 fixed in the middle of the vertical rods 20210, first horizontal racks 20218 fixed on the front and rear sidewalls of the slider 20216, a vertical clamping plate 20204 located inside the sleeving frame 20201, and second horizontal racks 20222 arranged on the front and rear sides of the middle of the vertical clamping plate 20204. The gears 20209 are engaged between the first horizontal racks 20218 and the second horizontal racks 20222 on the same side. The second horizontal racks 20222 have the same size as the upper and lower inner walls of the mounting groove 20207, and the two groups of second horizontal racks 20222 are tightly attached to the front and rear inner walls of the mounting groove 20207.

[0023] The vertical clamping plate 20204 is provided with an avoidance through slot 20221 for avoiding the screw rod 20205, so as to facilitate the loosening or tightening of the screw rod 20205 by using an electric sleeve wrench.

[0024] The cooperative design advantages of the clamping and fixing assembly 2 are as follows: The reliability of double fixation: the screw rod 20205 synchronously drives the T-shaped plug 2013 of the fixing connector seat assembly 201 and the vertical butt joint plate 3011 of the clamping assembly fixing guide rail unit 301, and one operation realizes the rigid fixation of the "connector seat assembly 201-sleeving frame 20201-guide rail assembly 3", avoiding the loosening risk caused by traditional step-by-step fixation and improving the connection strength.

[0025] Self-adaptive adjustment capability: the gap cooperation between the T-shaped plug 2013 and the plug-in slot 20202, combined with the swing clamping of the clamping cylinder 20206, can be compatible with ±3mm installation error, reducing the construction precision requirement of the elevator shaft wall.

[0026] Quick disassembly and maintenance: when the screw rod 20205 is rotated in reverse, the reset spring 20220 pushes the slider 20216 to reset, and the clamping assembly and the clamping assembly are synchronously loosened, and the disassembly time of a single guide rail unit 301 is shortened from 30 minutes to 5 minutes.

[0027] The lifting counterweight assembly 4 is slidably connected between the two groups of symmetrical parallel guide rail assemblies 3. The lifting counterweight assembly 4 comprises a lifting frame 401, a plurality of sets of counterweight blocks 402 arranged in a limiting groove 403 inside the lifting frame 401, steel rope guide wheels 404 symmetrically arranged at the top of both sides of the limiting groove 403, U-shaped sliding seats 405 symmetrically fixed on the side edges of the lifting frame 401, and two sets of upper and lower rollers 406 arranged in the middle of the side edges of the lifting frame 401. The U-shaped sliding seat 405 is clamped outside the vertical U-shaped groove seat 3013, and the rollers 406 are tightly attached to the inner wall of the vertical U-shaped groove seat 3013.

[0028] The guide rail assembly 3 comprises a plurality of sets of guide rail units 301 fixed in an up-down manner by using a sleeve joint assembly 202. The guide rail unit 301 comprises a vertical butt joint plate 3011, a convex plate 3012 arranged at the front end of the vertical butt joint plate 3011, and a vertical U-shaped groove seat 3013 fixed inside the convex plate 3012. The sleeve joint frame 20201 is symmetrically provided with a clamping groove 20203 for inserting one end of the vertical butt joint plate 3011 at the upper and lower ends of the inner side, and the side edges of the vertical clamping plate 20204 are provided with two sets of square protrusions 20223 arranged in an up-down manner, and the side edges of both ends of the vertical butt joint plate 3011 are provided with square inner grooves 3014 for clamping the square protrusions 20223.

[0029] Modularization and guiding advantage of the guide rail assembly 3 Flexibility of modular splicing: the guide rail units 301 are vertically butt jointed by the sleeve joint assembly 202, and the total length can be flexibly adjusted according to the height of the elevator shaft 1 (adapted to 10-100m hoistway).

[0030] High-precision guiding structure: the nested cooperation of the vertical U-shaped groove seat 3013 and the U-shaped sliding seat 405, combined with the lateral limiting of the rollers 406, makes the sliding verticality error of the lifting counterweight assembly 4 ≤0.5mm / m, avoids jamming or eccentric wear, and prolongs the service life of the components.

[0031] After the screw 20205 is locked, the clamping assembly fixes the sleeve joint frame 20201 on the connecting seat assembly 201, and at the same time, the clamping assembly clamps and fixes one end of the guide rail unit 301 on the sleeve joint frame 20201.

[0032] In addition, in order to achieve the above-mentioned purpose, the application also provides a household elevator comprising a weight balance system.

[0033] Specifically, in use: Mounting and fixing of the clamping and fixing assembly 2 and the guide rail assembly 3: Butt joint of the connecting seat assembly 201 and the sleeve joint assembly 202: the mounting seat 2011 is fixed on the rear wall of the elevator shaft 1 by the bolts 2012 to form a basic connecting structure, and the T-shaped plug 2013 of the connecting seat assembly 201 is inserted into the plug-in groove 20202 of the sleeve joint frame 20201.

[0034] Screw 20205 driven double fixation: screw 20205 is screwed, because screw 20205 is screwed with internal threaded hole 20217, slider 20216 is driven to move along installation groove 20207 to vertical plate 20208 (compression reset spring 20220), at the same time, screw 20205 is inserted into insertion hole 2014 of T-shaped insertion block 2013.

[0035] Clamping assembly action: inclined groove 20219 of slider 20216 pushes pin 20215 in U-shaped frame 20213, so that rotating drum 20212 rotates around horizontal rod 20214, and drives two sets of clamping drums 20206 to approach each other, until clamping drums 20206 tightly adhere to the front end inner wall of T-shaped insertion block 2013, so as to realize the fixation of sleeve frame 20201 and connecting seat assembly 201.

[0036] Clamping assembly action: first horizontal rack 20218 of slider 20216 engages with driving gear 20209 to rotate, gear 20209 drives second horizontal rack 20222 to move, so that vertical clamping plate 20204 approaches guide rail unit 301, square protrusion 20223 is clamped into square inner groove 3014 of vertical butt joint plate 3011, and vertical clamping plate 20204 tightly adheres to the inner wall of vertical butt joint plate 3011, so as to fix guide rail unit 301 in clamping groove 20203 of sleeve frame 20201.

[0037] Balance adjustment of lifting counterweight assembly 4: Guiding effect of guide rail assembly 3: multiple guide rail units 301 are fixed on sleeve assembly 202, the lower end of upper vertical U-shaped groove seat 3013 contacts the upper end of lower vertical U-shaped groove seat 3013, forming symmetrical parallel guide rail assembly 3, and vertical U-shaped groove seat 3013 provides sliding track for lifting counterweight assembly 4.

[0038] Sliding and balance of lifting counterweight assembly 4: lifting frame 401 is clamped outside vertical U-shaped groove seat 3013 through U-shaped sliding seat 405, and roller 406 tightly adheres to the inner wall of vertical U-shaped groove seat 3013, ensuring smooth sliding; the overall weight is adjusted by increasing or decreasing counterweight block 402 in limiting groove 403, steel rope guide wheel 404 guides steel rope to connect elevator car, so as to realize the weight balance of car and counterweight assembly, and reduce the driving energy consumption of elevator.

[0039] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A weight balancing system comprising two symmetrical sets of parallel guide rail assemblies, characterized in that: The guide rail assembly is fixed in the elevator shaft by a clamping and fixing assembly; The clamping and fixing assembly includes a connecting seat assembly fixed to the rear wall of the elevator shaft and a sleeve assembly sleeved on the connecting seat assembly, and the sleeve frame of the sleeve assembly is provided with a clamping assembly and a clamping assembly driven by a screw; A lifting counterweight assembly is slidably connected between two symmetrical sets of parallel guide rail assemblies; The guide rail assembly includes a plurality of guide rail units fixed up and down by using a sleeve assembly; After the screw is locked, the clamping assembly fixes the sleeve frame on the connecting seat assembly, and at the same time, the clamping assembly clamps and fixes one end of the guide rail unit on the sleeve frame.

2. A weight balancing system according to claim 1, characterized in that: The connecting seat assembly includes a mounting seat fixed to the rear wall of the elevator shaft by bolts and a T-shaped plug-in block integrally formed on one side of the front end of the mounting seat, and the T-shaped plug-in block is inserted into the plug-in slot in the socket frame.

3. A weight balancing system according to claim 2, characterized in that: A mounting groove communicating with the plug-in groove is provided in the middle of the inner side of the sleeve frame, and a vertical plate is provided in the middle of the inner side of the mounting groove; The clamping assembly includes a slider slidably connected in the center of the installation groove, horizontal rods arranged above and below the installation groove, a rotating drum sleeved on the outside of the horizontal rod, a clamping drum fixed at both ends of the rotating drum by connecting arms, and a U-shaped frame arranged in the center of the inside of the rotating drum; The slider is provided with two sets of upper and lower inclined slots, and the pin rod inside the U-shaped frame passes through the corresponding inclined slots; The screw rod passes through the reserved hole in the middle of the vertical plate, the middle of the sliding block is provided with an internal threaded hole for threading the screw rod, and the inner side of the T-shaped plug block is provided with an inserting hole for inserting the screw rod.

4. A weight balancing system according to claim 3, characterized in that: A return spring sleeved on the outside of the screw rod is connected between the slider and the vertical plate.

5. A weight balancing system according to claim 3, characterized in that: The clamping assembly includes vertical rods symmetrically arranged front and back inside the mounting slot, a gear fixed in the middle of the vertical rods, a first horizontal rack fixed to the front and rear side walls of the slider, a vertical clamping plate located inside the sleeve frame, and a second horizontal rack arranged on the front and rear sides of the middle of the vertical clamping plate; The gear is engaged between the first horizontal rack and the second horizontal rack on the same side.

6. A weight balancing system according to claim 5, characterized in that: The guide rail unit includes a vertical docking plate, a convex plate provided at the front end of the vertical docking plate, and a vertical U-shaped groove seat fixed inside the convex plate; The upper and lower ends of the inner side of the sleeve frame are symmetrically provided with card slots for inserting one end of the vertical docking plate, and the sides of the vertical clamping plate are provided with two groups of square protrusions in the upper and lower parts, and the sides of the two ends of the vertical docking plate are provided with square inner grooves for clamping the square protrusions.

7. A weight balancing system according to claim 6, characterized in that: The lifting counterweight assembly includes a lifting frame, a plurality of counterweight blocks arranged in the limiting groove inside the lifting frame, steel rope guide wheels symmetrically arranged on both sides of the top of the limiting groove, a U-shaped slide symmetrically fixed on the upper and lower sides of the lifting frame, and two sets of rollers arranged in the middle of the side of the lifting frame; The U-shaped sliding seat is clamped on the outer side of the vertical U-shaped groove seat, and the roller is closely attached to the inner wall of the vertical U-shaped groove seat.

8. A home elevator, characterized in that: Comprising a weight balancing system as claimed in any one of claims 1 to 7.

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