WO2024078719A1 - A guide rail fixing clip, an elevator guiding arrangement and a method - Google Patents
A guide rail fixing clip, an elevator guiding arrangement and a method Download PDFInfo
- Publication number
- WO2024078719A1 WO2024078719A1 PCT/EP2022/078508 EP2022078508W WO2024078719A1 WO 2024078719 A1 WO2024078719 A1 WO 2024078719A1 EP 2022078508 W EP2022078508 W EP 2022078508W WO 2024078719 A1 WO2024078719 A1 WO 2024078719A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide rail
- fixing
- metal plate
- plate structure
- clip
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 62
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 210000000078 claw Anatomy 0.000 claims abstract description 33
- 238000005524 ceramic coating Methods 0.000 claims description 8
- 239000011162 core material Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 4
- 229920001688 coating polymer Polymers 0.000 claims description 4
- 239000004446 fluoropolymer coating Substances 0.000 claims description 4
- 239000011224 oxide ceramic Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/023—Mounting means therefor
- B66B7/024—Lateral supports
Landscapes
- Connection Of Plates (AREA)
Abstract
An elevator guide rail fixing clip (20, 40) for fixing an elevator guide rail (8) to a fixing bracket (9), the clip (20, 40) comprising: a fastening part (21) configured to be fastened against the fixing bracket (9); and a claw part (22) configured to press a foot part (8') of the guide rail (8) against the fixing bracket (9) when the clip is fastened against the fixing bracket. The fixing clip comprises a metal plate structure (40) comprising a low friction coating, configured to be fixed to the fixing clip (20) and to allow sliding of the guide rail (8) between the claw part (22) and the fixing bracket (9). An elevator guiding arrangement. A method for attaching an elevator guide rail (8) to at least one elevator guide rail fixing bracket (9).
Description
A GUIDE RAIL FIXING CLIP, AN ELEVATOR GUIDING ARRANGEMENT AND A METHOD
FIELD OF THE INVENTION
The invention relates to an elevator guide rail fixing clip which is used in connection with a fixing bracket to install a guide rail in an elevator shaft. The elevator is preferably an elevator for transporting passengers and/or goods.
BACKGROUND OF THE INVENTION
Due to building shrinkage with higher elevator travels or due to thermal expansion, particularly required with travel more than 40 meters by elevator code, guide rail line is buckling and causing problems with ride comfort and safety. Solutions are presented that will allow guide rail sliding with respect to the brackets and the clips preventing guide rail line from buckling.
To minimize the effects of length changing of the guide rail, a guide rail clip may allow sliding of the guide rail relative to the fixing bracket, thus preventing the fixing bracket from deformation.
There is a need for an improved guide rail sliding clip and improved guide rail fixing allowing sliding of guide rails supporting high loads.
SUMMARY OF THE INVENTION
An object of the present invention is to introduce an improved elevator guide rail fixing clip, an improved elevator guiding arrangement, and an improved method for elevator elevator guide rail fixing. The invention provides solutions relating to problems associated with fixing of elevator guide rails.
The elevator guide rail fixing clip according to the invention is defined in claim 1 .
The elevator guide rail fixing clip for fixing an elevator guide rail to a fixing bracket comprises a fastening part configured to be fastened against the fixing bracket and a claw part configured to press a foot part of the guide rail against the fixing bracket when the clip is fastened against the fixing bracket. The fixing clip comprises a metal plate structure comprising a low friction coating, configured to be fixed to the fixing clip and to allow sliding of the guide rail between the claw part and the fixing bracket.
Preferable further details of the invention are introduced in the following, which further details can be combined individually or in any combination.
According to an embodiment the metal plate structure is configured to be positioned in use between the claw part and the fixing bracket so that the metal plate structure is surrounding the guide rail foot part of the guide rail.
According to an embodiment the metal plate structure comprises a bottom wall to be positioned in use between the guide rail foot part and the fixing bracket, and a top wall to be positioned in use between the guide rail foot part and the claw part.
According to an embodiment the metal plate structure comprises a low friction coating on at least one of the surfaces: a first surface of the bottom wall facing in use towards a lower support surface of the guide rail foot part, and a second surface of the top wall facing in use towards an upper surface of the guide rail foot part. According to an embodiment the metal plate structure comprises a low friction coating on a first surface of the bottom wall facing in use towards a lower support surface of the guide rail foot part. According to an embodiment the metal plate structure comprises a low friction coating on a second surface of the top wall facing in use towards an upper surface of the guide rail foot part.
According to an embodiment the surface(s) to be coated of the metal plate structure are selected for the circumstances of a specific guide rail installation application. For example, only the surfaces of the metal plate structure between the guide rail and the fixing bracket may be equipped with a coating.
According to an embodiment the metal plate structure comprises a low friction coating on all sides.
According to an embodiment the metal plate structure comprises a bottom wall, a top wall and an intermediate element such as an intermediate wall connecting the bottom wall and the top wall.
According to an embodiment the metal plate structure comprises a c- plate.
According to an embodiment the metal plate structure comprises a low friction coating having a friction lower than friction of metal material of the claw part.
According to an embodiment the metal plate structure comprises a core of metal material such as steel.
According to an embodiment the metal plate structure comprises a polymer coating or fluoropolymer coating.
According to an embodiment the polymer coated metal plate structure comprises a PTFE coating, which preferably has a thickness preferably 15 pm to 50 pm, more preferably 20 pm to 40 pm, most preferably 25 pm.
According to an embodiment the metal plate structure comprises a ceramic coating such as a chromium oxide ceramic coating.
According to an embodiment the metal plate structure comprises at least one fixing bend for fixing the metal plate structure to the side of the claw part or to a side of a claw intermediate wall comprised by the claw part.
According to an embodiment the material of the at least one fixing bend comprises the plate core material of the metal plate structure.
According to an embodiment the at least one fixing bend is located at a side of the top wall.
The elevator guiding arrangement according to the invention is defined in claim 16.
The elevator guiding arrangement comprises at least one fixing clip, an elevator guide rail for guiding an elevator car in an elevator shaft, at least one fixing bracket supporting the elevator guide rail; and the at least one fixing clip is used for attaching the elevator guide rail to the at least one fixing bracket.
The method for elevator guide rail fixing according to the invention is defined in claim 17.
In the method for attaching an elevator guide rail to at least one elevator guide rail fixing bracket, at least one elevator guide rail fixing clip is provided, the at least one elevator guide rail is placed between said fixing clip and the fixing bracket, and said fixing clip is fastened against the fixing bracket.
Preferable further details of the invention are introduced in the following, which further details can be combined individually or in any combination.
The inventors have found out that attaching guide rails by the improved fixing clips provided with a low friction coating provides an improvement with fixing elevator guide rails. The coating on the metal plate structure improves a controlled sliding of the guide rail relative to the mounting bracket, allowing the sliding to take place before buckling occurs thanks to the coating. Due to a relatively simple design, the overall clip prices remain low and therefore the elevator costs remain also low.
The metal plate structure with the coating can be easily built to be non-compressible within the framework of the guide rail mounting application,
allowing the guide rail to maintain its correct position in relation to the fixing point even in a situation where the guide rail has to be adjusted by means of the adjustable fixing bracket. A thin polymer coating or fluoropolymer coating or ceramic coating such as a chromium oxide ceramic coating can be constructed to be non-compressible within the framework of the guide rail mounting application.
According to an embodiment the positioning of the metal plate structure between the fixing clip and the fixing bracket before installing the guide rail is reliable, allowing the separately fabricated metal plate structure to be prepositioned and assembled correctly on the fixing clip. Advantageously the fixing clip, consisting of separate parts, can be pre-assembled before guide rail installation.
According to an embodiment the plate material such as sheet material of the metal plate structure is thin so that a thermal treatment of the sheet metal structure during the coating process can be designed to be short, thus making the coating cost-effective.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will in the following be described in greater detail by means of preferred embodiments with reference to the attached drawings, in which:
Figure 1 shows a side view of an elevator,
Figure 2 shows a guide rail attached with an embodiment of a sliding fixing clip to a fixing bracket,
Figure 3 shows the guide rail arrangement of Figure 2 diagonally from above,
Figure 4 shows the guide rail arrangement of Figure 2 from above, Figure 5 shows an embodiment of the fixing clip split in parts, and Figure 6 shows the fixing clip of Figure 5.
DETAILED DESCRIPTION
Figure 1 shows a side view of an elevator.
The elevator may comprise a car 2, an elevator shaft 1 , a hoisting machinery 3, hoisting ropes 4, and a counterweight 5. A separate or an integrated car frame 6 may surround the car 2.
The hoisting machinery 3 may be positioned in the shaft 1. The hoisting machinery may comprise a drive 31 , an electric motor 32, a traction
sheave 33, and a machinery brake 34. The hoisting machinery 3 may move the car 2 in a vertical direction upwards and downwards in the vertically extending elevator shaft 1 . The machinery brake 34 may stop the rotation of the traction sheave 33 and thereby the movement of the elevator car 2.
In Figure 1 , the car 2 is connected by the ropes 4 via the traction sheave 33 to the counterweight 5. The car and the counterweight are suspended by one or more ropes 4 which are guided over the traction sheave 33 for moving the car 2 vertically in the shaft 1 .
In Figure 1 , the car 2 is further supported with guide members 7 at guide rails 8 extending in the vertical direction in the shaft. The guide rails may be attached with fixing brackets 9 to the side wall structures 10 in the shaft. The guide members 7 ensure the vertical movement of the car 2 when the car moves upwards and downwards in the shaft 1 . The counterweight 5 may be supported in a corresponding way on guide rails that are attached to the wall structure 10 of the shaft 1 .
The car 2 may transport people and/or goods between the landings in the building. The elevator shaft 1 may be formed so that the wall structure 10 is formed of solid walls or so that the wall structure 10 is formed of an open steel structure.
Figures 2-4 show a guide rail 8 attached with a sliding fixing clip 20 to a fixing bracket 9 which is preferably adjustable. The fixing bracket 9 comprises a first body part 11 to be directed outwards from the shaft wall structure 10, the body part 11 comprising a wall fixing part 12. Further, the fixing bracket 9 comprises a second body part 13 with a guide rail fixing part 14. The first body part 11 and the second body part 13 preferably comprise means for adjusting said first body part 11 and the second body part 13 relative to each other, such as holes, which may be elongate. The guide rail 8 may thus be adjusted horizontally and laterally, and the distance of the guide rail 8 from the wall structure 10 may be adjusted.
The guide rail 8 is attached to the guide rail fixing bracket 9, particularly to the guide rail fixing part 14 with the fixing clip 20 preferably by a bolted joint. The bolted joint preferably comprises a bolt 35, a washer 36 and a nut 37.
The fixing clip 20 comprises a fastening part 21 for fastening the clip 20 to the fixing bracket 9. In Figures 2-4, two clips 20 on opposite sides of the guide rail 8 at certain rail guide rail support heights in the shaft 1 are fastened
against the fixing part 14 of the fixing bracket 9. The fastening part 21 comprises an opening 24 for receiving a screw fastening means 35 such as a screw or bolt.
The fixing clip 20 comprises a claw part 22 for pressing the guide rail 8 against the fixing bracket 9. Preferably the claw part 22 is tensioned in the attached state when the bolted joint is tightened. In Figures 2-4, the claws 22 of the clips on the opposite sides of the guide rail 8 press or clamp the guide rail 8 against the fixing part 14 of the fixing bracket 9.
The fixing clip 20 comprises metal plate structure 40 such as a c-plate 40 comprising a low friction coating attached to the fixing clip 20. The metal plate structure 40 is configured to be fixed to the fixing clip 20 and to allow sliding of the guide rail 8 between the claw part 22 and the fixing bracket 9.
According to an embodiment the metal plate structure 40 is configured to be positioned in use between the claw part 22 and the fixing bracket 9 so that the metal plate structure 40 is surrounding a foot part 8’ of the guide rail 8.
According to an embodiment the metal plate structure 40 comprises a bottom wall 41 to be positioned in use between the guide rail foot part 8’ and the fixing bracket 9, and a top wall 42 to be positioned in use between the guide rail foot part 8’ and the claw part 22. When the guide rail 8 is secured against the fixing bracket 9, the bottom wall 41 is located between a lower support surface of the guide rail foot 8’ and the fixing bracket 9, and the top wall 42 is located between an upper surface the guide rail foot 8’ and the claw part 22.
According to an embodiment the metal plate structure 40 comprises a low friction coating on at least one of the surfaces: a first surface 4T of the bottom wall 41 facing in use towards a lower support surface of the guide rail foot part 8’, and a second surface 42’ of the top wall 42 facing in use towards an upper surface of the guide rail foot part 8’.
According to an embodiment the metal plate structure 40 is surrounded by a low friction coating, thus comprising a low friction coating on all sides.
According to an embodiment the low friction coated metal plate structure 40 such as the c-plate 40 comprises a bottom wall 41 and a top wall 42.
According to an embodiment the low friction coated metal plate structure 40 such as the c-plate 40 comprises a bottom wall 41 , a top wall 42 and an intermediate element 43 such as an intermediate wall connecting the
bottom wall 41 and the top wall 42.
According to an embodiment the claw part 22 comprises a claw intermediate wall 23 which provides for a suitable space for the foot of the guide rail 8 between the claw part 22 and the fixing bracket 9. The foot tip of the guide rail 8 may rest laterally on the claw intermediate wall 23.
According to an embodiment the metal plate structure 40 comprises a low friction coating having a friction lower than friction of metal material of the claw part 22 and/or a friction lower than friction of the fixing bracket attachment surface 14.
According to an embodiment the metal plate structure 40 comprises a core of metal material such as steel.
According to an embodiment the metal plate structure 40 comprises a polymer coating or fluoropolymer coating.
According to an embodiment the polymer coated metal plate structure 40 comprises a PTFE coating. Preferably the PTFE coating has a thickness preferably 15 pm to 50 pm, more preferably 20 pm to 40 pm, most preferably 25 pm. According to an example the PTFE coating is applied after a preheating of the plate structure material to +350 °C and sandblasting. Thereafter the PTFE coating may be polymerized at +300 °C. Before the coating sharp edges of the metal plate core may be deburred.
According to an embodiment the metal plate structure 40 comprises a ceramic coating such as a chromium oxide ceramic coating, having low friction coating properties.
According to an embodiment the metal plate structure 40 comprises at least one fixing bend 45 for fixing the metal plate structure to the side of the claw part 22 or to a side of the claw intermediate wall 23 (not shown in Figures).
Figure 5 shows an embodiment of the fixing clip split in parts 20 and 40 so that the low friction coated metal plate structure 40 is shown with two fixing bends 45 in straight state before bending. Figure 6 shows the fixing clip of Figure 5 in an assembled state so that two side fixing bends 45 are bent around the claw part 22 sides. In Figure 6 the fixing bends are located at the sides of the top wall 42.
According to an embodiment the at least one fixing bend 45 comprises the plate core material of the metal plate structure 40.
The at least one fixing clip 20, 40 may be used in the elevator guiding arrangement shown for example in Figure 1 comprising an elevator guide rail 8
for guiding the elevator car 2 in the elevator shaft 1 , at least one fixing bracket 9 supporting the elevator guide rail 8; wherein the at least one fixing clip 20, 40 is used for attaching the elevator guide rail 8 to the at least one fixing bracket 9.
According to a method for attaching an elevator guide rail 8 to at least one elevator guide rail fixing bracket 9, at least one elevator guide rail fixing clip 20, 40 is provided, and the at least one elevator guide rail is placed between said fixing clip and the fixing bracket, and fastened said fixing clip against the fixing bracket.
The use of the invention is not limited to the embodiments disclosed in the figures. The invention can be used in any type of elevator e.g. an elevator comprising a machine room or lacking a machine room, an elevator comprising a counterweight or lacking a counterweight. The counterweight could be positioned on either side wall or on both side walls or on the back wall of the elevator shaft. The drive, the motor, the traction sheave, and the machine brake could be positioned in a machine room or somewhere in the elevator shaft. The elevator car guide rails could be positioned on opposite side walls of the shaft or on a back wall of the shaft.
It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.
Claims
1 . An elevator guide rail fixing clip (20, 40) for fixing an elevator guide rail (8) to a fixing bracket (9), the clip (20, 40) comprising: a fastening part (21 ) configured to be fastened against the fixing bracket (9); a claw part (22) configured to press a foot part (8’) of the guide rail (8) against the fixing bracket (9) when the clip is fastened against the fixing bracket; characterized in that the fixing clip comprises a metal plate structure (40) comprising a low friction coating, configured to be fixed to the fixing clip (20) and to allow sliding of the guide rail (8) between the claw part (22) and the fixing bracket (9).
2. The clip according to claim 1 , wherein the metal plate structure (40) is configured to be positioned in use between the claw part (22) and the fixing bracket (9) so that the metal plate structure is surrounding the guide rail foot part (8’) of the guide rail (8).
3. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a bottom wall (41 ) to be positioned in use between the guide rail foot part (8’) and the fixing bracket (9), and a top wall (42) to be positioned in use between the guide rail foot part (8’) and the claw part (22).
4. The clip according to claim 3, wherein the metal plate structure (40) comprises a low friction coating on at least one of the surfaces: a first surface (41 ’) of the bottom wall (41 ) facing in use towards a lower support surface of the guide rail foot part (8’), and a second surface (42’) of the top wall (42) facing in use towards an upper surface of the guide rail foot part (8’).
5. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a low friction coating on all sides.
6. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a bottom wall (41 ), a top wall (42) and an intermediate element (43) such as an intermediate wall connecting the bottom wall (41 ) and the top wall (42).
7. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a c-plate.
8. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a low friction coating having a friction lower than friction of metal material of the claw part (22) and/or a friction lower than friction of a support surface of a guide rail fixing part (14) of the fixing bracket (9).
9. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a core of metal material such as steel.
10. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a polymer coating or fluoropolymer coating.
11. The clip according to any of preceding claims, wherein the polymer coated metal plate structure (40) comprises a PTFE coating, which preferably has a thickness preferably 15 pm to 50 pm, more preferably 20 pm to 40 pm, most preferably 25 pm.
12. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises a ceramic coating such as a chromium oxide ceramic coating.
13. The clip according to any of preceding claims, wherein the metal plate structure (40) comprises at least one fixing bend (45) for fixing the metal plate structure (40) to the side of the claw part (22) or to a side of a claw intermediate wall (23) comprised by the claw part.
14. The clip according to claim 13, wherein the material of the at least one fixing bend (45) comprises the plate core material of the metal plate structure (40).
15. The clip according to claim 13 or 14, when dependent on claim 3, wherein the at least one fixing bend (45) is located at a side of the top wall (42).
16. An elevator guiding arrangement comprising at least one fixing clip (20, 40) according to any of claims 1 to 15, the arrangement comprising: an elevator guide rail (8) for guiding an elevator car (2) in an elevator shaft (1 ); at least one fixing bracket (9) supporting the elevator guide rail (8); and the at least one fixing clip (20, 40) is used for attaching the elevator guide rail (8) to the at least one fixing bracket (9).
17. A method for attaching an elevator guide rail (8) to at least one elevator guide rail fixing bracket (9), characterized by providing at least one elevator guide rail fixing clip (20, 40) according to any of claims 1 to 15, placing the at least one elevator guide rail (8) between said fixing clip
(20, 40) and the fixing bracket (9), and fastening said fixing clip against the fixing bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2022/078508 WO2024078719A1 (en) | 2022-10-13 | 2022-10-13 | A guide rail fixing clip, an elevator guiding arrangement and a method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2022/078508 WO2024078719A1 (en) | 2022-10-13 | 2022-10-13 | A guide rail fixing clip, an elevator guiding arrangement and a method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024078719A1 true WO2024078719A1 (en) | 2024-04-18 |
Family
ID=83691657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/078508 WO2024078719A1 (en) | 2022-10-13 | 2022-10-13 | A guide rail fixing clip, an elevator guiding arrangement and a method |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2024078719A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1925867A (en) * | 1931-11-21 | 1933-09-05 | Westinghouse Elec Elevator Co | Elevator guide-rail supporting device |
| US3982692A (en) * | 1974-07-19 | 1976-09-28 | R. Stahl Aufzuege Gmbh | Clamping means for elevator guide rails and the like |
| JPS52159555U (en) * | 1976-05-27 | 1977-12-03 | ||
| US5316108A (en) * | 1992-09-04 | 1994-05-31 | Inventio Ag | Apparatus for attaching elevator guide rails to elevator shaft walls |
| US20180362299A1 (en) * | 2015-12-17 | 2018-12-20 | Inventio Ag | Fastening devices for fastening elevator rails |
-
2022
- 2022-10-13 WO PCT/EP2022/078508 patent/WO2024078719A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1925867A (en) * | 1931-11-21 | 1933-09-05 | Westinghouse Elec Elevator Co | Elevator guide-rail supporting device |
| US3982692A (en) * | 1974-07-19 | 1976-09-28 | R. Stahl Aufzuege Gmbh | Clamping means for elevator guide rails and the like |
| JPS52159555U (en) * | 1976-05-27 | 1977-12-03 | ||
| US5316108A (en) * | 1992-09-04 | 1994-05-31 | Inventio Ag | Apparatus for attaching elevator guide rails to elevator shaft walls |
| US20180362299A1 (en) * | 2015-12-17 | 2018-12-20 | Inventio Ag | Fastening devices for fastening elevator rails |
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