Guide rail fixing clamp, elevator guide device and method

Abstract

An elevator guide rail fixing clamp (20, 40) for fixing an elevator guide rail (8) to a fixing bracket (9), the clamp (20, 40) comprising: a fastening portion (21) configured to be fastened against the fixing bracket (9); and a claw portion (22) configured to press a foot portion (8 ') of the guide rail (8) against the fixing bracket (9) when the clamp is fastened against the fixing bracket. The stationary fixture comprises a sheet metal structure (40) comprising a low friction coating, the sheet metal structure being configured to be secured to the stationary fixture (20) and to allow the guide rail (8) to slide between the claw portion (22) and the stationary bracket (9). The invention provides an elevator guide device. A method for attaching an elevator guide rail (8) to at least one elevator guide rail fixing bracket (9).

Description

Technical Field

[0001] The present invention relates to an elevator guide rail fixing clamp, which is used in combination 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 Art

[0002] Due to building contraction or thermal expansion at higher lift travels, especially where lift codes require travels over 40 meters, the guide rail wires buckle and cause ride comfort and safety issues. The proposed solution will allow the guide rails to slide relative to the brackets and clamps, thereby preventing the guide rail wires from buckling.

[0003] To minimize the effects of changes in the length of the guide rail, the guide rail clamp may allow the guide rail to slide relative to the fixed bracket, thereby preventing the fixed bracket from deforming.

[0004] There is a need for an improved rail slide clamp and an improved rail fixture that allow rail slides that support high loads. Summary of the invention

[0005] An object of the present invention is to introduce an improved elevator guide rail fixing clamp, an improved elevator guide device and an improved elevator guide rail fixing method.The present invention provides a solution to the problems associated with the fixing of elevator guide rails.

[0006] The elevator guide rail fixing clamp of the present invention is defined in claim 1.

[0007] An elevator rail fixing clamp for fixing an elevator rail to a fixing bracket, the elevator rail fixing clamp comprising: a fastening portion configured to be fastened against the fixing bracket; and a claw portion configured to press a foot portion of the rail against the fixing bracket when the clamp is fastened against the fixing bracket. The fixing clamp comprises a sheet metal structure including a low friction coating, the sheet metal structure being configured to be fixed to the fixing clamp and allowing the rail to slide between the claw portion and the fixing bracket.

[0008] Preferred further details of the invention are presented below, which further details may be combined individually or in any combination.

[0009] According to an embodiment, the sheet metal structure is configured to be positioned, in use, between the claw portion and the fixing bracket such that the sheet metal structure surrounds a rail foot portion of the guide rail.

[0010] According to an embodiment, the sheet metal structure comprises a bottom wall which is positioned, in use, between the guide rail foot portion and the fixing bracket, and a top wall which is positioned, in use, between the guide rail foot portion and the claw portion.

[0011] According to an embodiment, the sheet metal structure comprises a low friction coating on at least one of the following surfaces: a first surface of the bottom wall facing the lower support surface of the guide foot portion in use, and a second surface of the top wall facing the upper surface of the guide foot portion in use. According to an embodiment, the sheet metal structure comprises a low friction coating on the first surface of the bottom wall, which first surface faces the lower support surface of the guide foot portion in use. According to an embodiment, the sheet metal structure comprises a low friction coating on the second surface of the top wall, which second surface faces the upper surface of the guide foot portion in use.

[0012] According to an embodiment, the surface(s) of the sheet metal structure to be coated are selected depending on the environment of the specific guide rail installation application. For example, only the surface of the sheet metal structure between the guide rail and the fixing bracket may be provided with a coating.

[0013] According to an embodiment, the sheet metal structure comprises a low-friction coating on all sides.

[0014] According to an embodiment, the sheet metal 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.

[0015] According to an embodiment, the metal sheet structure comprises a c-plate.

[0016] According to an embodiment, the sheet metal structure comprises a low-friction coating having a friction lower than the friction of the metal material of the claw portion.

[0017] According to an embodiment, the metal sheet structure comprises a core of metal material, such as steel.

[0018] According to an embodiment, the metal sheet structure comprises a polymer coating or a fluoropolymer coating.

[0019] According to an embodiment, the polymer-coated metal sheet structure comprises a PTFE coating, the thickness of which is preferably 15 μm to 50 μm, more preferably 20 μm to 40 μm, most preferably 25 μm.

[0020] According to an embodiment, the metal plate structure comprises a ceramic coating, such as a chromium oxide ceramic coating.

[0021] According to an embodiment, the sheet metal structure comprises at least one fixing bend for fixing the sheet metal structure to a side face of the claw portion or to a side face of a claw intermediate wall comprised by the claw portion.

[0022] According to an embodiment, the material of the at least one fixed bend comprises a core material of a metal sheet structure.

[0023] According to an embodiment, at least one fixed bend is located at a side surface of the top wall.

[0024] The elevator guide device of the present invention is defined in claim 16 .

[0025] The elevator guide device comprises at least one fixing clamp, an elevator guide rail for guiding the elevator car in the elevator shaft, at least one fixing bracket supporting the elevator guide rail; and the at least one fixing clamp is used to attach the elevator guide rail to the at least one fixing bracket.

[0026] The elevator guide rail fixing method of the present invention is defined in claim 17 .

[0027] In a method for attaching an elevator guide rail to at least one elevator guide rail fixing bracket, at least one elevator guide rail fixing clamp is provided, the at least one elevator guide rail is placed between the fixing clamp and the fixing bracket, and the fixing clamp is fastened against the fixing bracket.

[0028] Preferred further details of the invention are presented below, which further details may be combined individually or in any combination.

[0029] The inventors have found that attaching the rails by an improved fixing clamp provided with a low friction coating provides an improvement in fixing lift rails. The coating on the sheet metal structure improves the controlled sliding of the rail relative to the mounting bracket, allowing sliding to occur before buckling occurs due to the coating. Due to the relatively simple design, the overall clamp price is kept low, and therefore the lift cost is also kept low.

[0030] The sheet metal structure with the coating can be easily constructed to be incompressible within the framework of the rail mounting application, allowing the rail to maintain its correct position relative to the fixing point even in the case where the rail must be adjusted with the aid of an adjustable fixing bracket. Thin polymer coatings or fluoropolymer coatings or ceramic coatings such as chromium oxide ceramic coatings can be constructed to be incompressible within the framework of the rail mounting application.

[0031] According to an embodiment, the positioning of the sheet metal structure between the fixing fixture and the fixing bracket is reliable before the guide rail is installed, thereby allowing the separately manufactured sheet metal structure to be pre-positioned and correctly assembled on the fixing fixture. Advantageously, the fixing fixture consisting of separate parts can be pre-assembled before the guide rail is installed.

[0032] According to an embodiment, the sheet material, such as a sheet of a metal sheet structure, is thin, so that the heat treatment of the metal sheet structure during the coating process can be designed to be short, thereby making the coating cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be described in more detail below with the aid of preferred embodiments with reference to the accompanying drawings, in which:

[0034] Figure 1 shows a side view of the lift,

[0035] Figure 2 shows a guide rail attached to a fixed bracket using a sliding fixing clamp of an embodiment,

[0036] Figure 3 Shown from above Figure 2 The guide rail device,

[0037] Figure 4 Shown from above Figure 2 The guide rail device,

[0038] Figure 5 An embodiment of a fixing fixture divided into several parts is shown, and

[0039] Figure 6 Shows Figure 5 Fixing fixture. DETAILED DESCRIPTION

[0040] Figure 1 A side view of the lift is shown.

[0041] The elevator may comprise a car 2, an elevator shaft 1, a hoisting machine 3, hoisting ropes 4 and a counterweight 5. A separate or integrated car frame 6 may surround the car 2.

[0042] A hoisting machine 3 may be positioned in the shaft 1. The hoisting machine may include a drive 31, an electric motor 32, a traction sheave 33, and a mechanical brake 34. The hoisting machine 3 may move the car 2 upward and downward in the vertically extending elevator shaft 1. The mechanical brake 34 may stop the rotation of the traction sheave 33, thereby stopping the movement of the elevator car 2.

[0043] exist Figure 1 In the embodiment, the car 2 is connected to the counterweight 5 by ropes 4 via a traction sheave 33. 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.

[0044] exist Figure 1 In the embodiment of the present invention, the car 2 is further supported by guide members 7 at guide rails 8, which extend in the vertical direction in the shaft. The guide rails can be attached to the side wall structure 10 in the shaft with fixing brackets 9. The guide members 7 ensure the vertical movement of the car 2 when the car moves up and down in the shaft 1. The counterweight 5 can be supported in a corresponding manner on the guide rails, which are attached to the wall structure 10 of the shaft 1.

[0045] The car 2 may transport people and / or goods between landings of a building.The elevator shaft 1 may be formed such that the wall structure 10 is formed by a solid wall, or such that the wall structure 10 is formed by an open steel structure.

[0046] Figures 2 to 4 A guide rail 8 is shown attached to a fixed bracket 9 with a sliding fixing clamp 20, the fixed bracket 9 preferably being adjustable. The fixed bracket 9 comprises a first main body portion 11 pointing outward from the shaft wall structure 10, the main body portion 11 comprising a wall fixing portion 12. In addition, the fixed bracket 9 comprises a second main body portion 13 having a guide rail fixing portion 14. The first main body portion 11 and the second main body portion 13 preferably comprise means for adjusting the first main body portion 11 and the second main body portion 13 relative to each other, such as an elongated hole. Thus, the guide rail 8 can be adjusted horizontally and laterally, and the distance of the guide rail 8 from the wall structure 10 can be adjusted.

[0047] The guide rail 8 is attached to the guide rail fixing bracket 9, in particular to the guide rail fixing part 14, by means of a fixing clamp 20, preferably by means of a bolt joint. The bolt joint preferably comprises a bolt 35, a washer 36 and a nut 37.

[0048] The fixing clamp 20 includes a fastening portion 21 for fastening the clamp 20 to the fixing bracket 9. Figures 2 to 4 In the embodiment, at a specific rail support height in the well 1, two clamps 20 on opposite sides of the rail 8 are fastened against the fixing portion 14 of the fixing bracket 9. The fastening portion 21 comprises an opening 24 for receiving a screw fastening means 35, such as a screw or a bolt.

[0049] The fixing clamp 20 comprises a claw portion 22 for pressing the guide rail 8 against the fixing bracket 9. Preferably, the claw portion 22 is tensioned in the attached state when the bolt joint is tightened. Figures 2 to 4 In the embodiment of the present invention, the claws 22 of the clamp on the opposite side of the guide rail 8 press or clamp the guide rail 8 against the fixed part 14 of the fixed bracket 9.

[0050] The fixing clamp 20 includes a sheet metal structure 40, such as a c-plate 40, including a low friction coating attached to the fixing clamp 20. The sheet metal structure 40 is configured to be fixed to the fixing clamp 20 and allow the guide rail 8 to slide between the claw portion 22 and the fixing bracket 9.

[0051] According to an embodiment, the sheet metal structure 40 is configured to be positioned, in use, between the claw portion 22 and the fixing bracket 9 such that the sheet metal structure 40 surrounds the foot portion 8 ′ of the guide rail 8 .

[0052] According to an embodiment, the sheet metal structure 40 comprises a bottom wall 41, which is positioned in use between the rail foot portion 8' and the fixing bracket 9, and a top wall 42, which is positioned in use between the rail foot portion 8' and the claw portion 22. When the rail 8 is fixed against the fixing bracket 9, the bottom wall 41 is located between the lower support surface of the rail base 8' and the fixing bracket 9, and the top wall 42 is located between the upper surface of the rail base 8' and the claw portion 22.

[0053] According to an embodiment, the metal sheet structure 40 comprises a low friction coating on at least one of the following surfaces: a first surface 41 ' of the bottom wall 41 facing the lower supporting surface of the guide foot portion 8' in use, and a second surface 42' of the top wall 42 facing the upper surface of the guide foot portion 8' in use.

[0054] According to an embodiment, the sheet metal structure 40 is surrounded by a low-friction coating and thus comprises a low-friction coating on all sides.

[0055] According to an embodiment, a low friction coated metal plate structure 40 , such as a c-plate 40 , includes a bottom wall 41 and a top wall 42 .

[0056] According to an embodiment, a low friction coated metal plate structure 40 , such as a c-plate 40 , includes 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 .

[0057] According to an embodiment, the claw portion 22 comprises a claw intermediate wall 23 which provides a suitable space for the foot of the guide rail 8 between the claw portion 22 and the fixing bracket 9. The toe of the guide rail 8 can rest on the claw intermediate wall 23 laterally.

[0058] According to an embodiment, the sheet metal structure 40 includes a low friction coating having a friction lower than the friction of the metal material of the claw portion 22 and / or a friction lower than the friction of the fixed bracket attachment surface 14 .

[0059] According to an embodiment, the metal sheet structure 40 comprises a core of a metal material, such as steel.

[0060] According to an embodiment, the metal plate structure 40 comprises a polymer coating or a fluoropolymer coating.

[0061] According to an embodiment, the polymer coated metal plate structure 40 comprises a PTFE coating. Preferably, the thickness of the PTFE coating is preferably 15 μm to 50 μm, more preferably 20 μm to 40 μm, most preferably 25 μm. According to an example, the PTFE coating is applied after preheating the plate structure material to +350°C and sandblasting. Thereafter, the PTFE coating can be polymerized at +300°C before the coating sharp edges of the metal plate core are deburred.

[0062] According to an embodiment, the metal plate structure 40 comprises a ceramic coating having low friction coating properties, such as a chromium oxide ceramic coating.

[0063] According to an embodiment, the sheet metal structure 40 comprises at least one fixing bend 45 for fixing the sheet metal structure to a side of the claw portion 22 or to a side of the claw portion intermediate wall 23 (not shown in the figures).

[0064] Figure 5 An embodiment of a fixing fixture divided into a portion 20 and a portion 40 is shown, whereby a low-friction coated sheet metal structure 40 is shown with two fixing bends 45 in a straight state prior to bending. Figure 6 Shown in assembled state Figure 5 The fixing jig is used so that the two side fixing bent portions 45 are bent around the side of the claw portion 22. Figure 6 In the embodiment, the fixed curved portion is located at the side of the top wall 42 .

[0065] According to an embodiment, the at least one fixing bend 45 comprises core material of the sheet metal structure 40 .

[0066] At least one fixing fixture 20, 40 may be used, for example, Figure 1 In the elevator guide device shown, the elevator guide device includes an elevator guide rail 8 for guiding the elevator car 2 in the elevator shaft 1, and at least one fixed bracket 9 supporting the elevator guide rail 8; wherein at least one fixing clamp 20, 40 is used to attach the elevator guide rail 8 to the at least one fixed bracket 9.

[0067] 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 clamp 20, 40 is provided and at least one elevator guide rail is placed between the fixing clamp and the fixing bracket and the fixing clamp is fastened to the fixing bracket.

[0068] The use of the invention is not limited to the embodiments disclosed in the accompanying drawings. The invention can be used for any type of elevator, for example an elevator with or without a machine room, with or without a counterweight. The counterweight can be positioned on any side wall or on both side walls or on the rear wall of the elevator shaft. The drive, motor, traction sheave and mechanical brake can be positioned somewhere in the machine room or in the elevator shaft. The elevator car guide rails can be positioned on opposite side walls of the shaft or on the rear wall of the shaft.

[0069] It is obvious to a person skilled in the art that, as 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 fixture (20, 40) for fixing an elevator guide rail (8) to a fixing bracket (9), the fixture (20, 40) comprising: a fastening portion (21) configured to be fastened against the fixing bracket (9); a claw portion (22) configured to press a foot portion (8') of the guide rail (8) against the fixing bracket (9) when the clamp is tightened against the fixing bracket; Characterized in that the fixing fixture comprises: A sheet metal structure (40) comprising a low friction coating is configured to be fixed to the fixing fixture (20) and to allow the guide rail (8) to slide between the claw portion (22) and the fixing bracket (9).

2. A clamp according to claim 1, wherein the metal sheet structure (40) is configured to be positioned between the claw portion (22) and the fixing bracket (9) in use so that the metal sheet structure surrounds the guide rail foot portion (8') of the guide rail (8).

3. A clamp according to any one of the preceding claims, wherein the metal plate structure (40) comprises a bottom wall (41) and a top wall (42), wherein the bottom wall is positioned between the guide rail foot portion (8') and the fixed bracket (9) during use, and the top wall is positioned between the guide rail foot portion (8') and the claw portion (22) during use.

4. A clamp according to claim 3, wherein the metal plate structure (40) includes a low friction coating located on at least one of the following surfaces: a first surface (41') of the bottom wall (41) facing the lower supporting surface of the guide foot portion (8') when in use, and a second surface (42') of the top wall (42) facing the upper surface of the guide foot portion (8') when in use.

5. The clamp according to any of the preceding claims, wherein the sheet metal structure (40) comprises a low-friction coating on all sides.

6. A clamp according to any one of the preceding claims, wherein the metal sheet 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. A clamp according to any one of the preceding claims, wherein the sheet metal structure (40) comprises a c-plate.

8. A clamp according to any of the preceding claims, wherein the metal plate structure (40) includes a low-friction coating having a friction lower than the friction of the metal material of the claw part (22) and / or a friction lower than the friction of the supporting surface of the guide rail fixing part (14) of the fixing bracket (9).

9. A clamp according to any one of the preceding claims, wherein the sheet metal structure (40) comprises a core of metallic material, such as steel.

10. The clamp according to any of the preceding claims, wherein the sheet metal structure (40) comprises a polymer coating or a fluoropolymer coating.

11. A clamp according to any of the preceding claims, wherein the polymer coated metal sheet structure (40) comprises a PTFE coating, the thickness of the PTFE coating preferably being 15 to 50 μm, more preferably 20 to 40 μm, most preferably 25 μm.

12. A clamp according to any one of the preceding claims, wherein the sheet metal structure (40) comprises a ceramic coating, such as a chromium oxide ceramic coating.

13. A clamp according to any one of the preceding claims, wherein the sheet metal structure (40) comprises at least one fixing bend (45) for fixing the sheet metal structure (40) to the side of the claw portion (22) or to the side of a claw intermediate wall (23) comprised by the claw portion.

14. The fixture according to claim 13, wherein the material of the at least one fixed bend (45) comprises the core material of the metal sheet structure (40).

15. A clamp according to claim 13 or 14 when dependent on claim 3, wherein the at least one fixed bend (45) is located at a side of the top wall (42).

16. An elevator guide device, comprising at least one fixing fixture (20, 40) according to any one of claims 1 to 15, the device comprising: Elevator guide rails (8) for guiding an elevator car (2) in an elevator shaft (1); at least one fixed bracket (9), the at least one fixed bracket supporting the elevator rail (8); and At least one fixing clamp (20, 40) is used to attach the elevator 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), Features Providing at least one elevator guide rail fixing fixture (20, 40) according to any one of claims 1 to 15, The at least one elevator rail (8) is placed between the fixing clamp (20, 40) and the fixing bracket (9), and the fixing clamp is fastened against the fixing bracket.

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