WO2021242202A1

WO2021242202A1 - A guide shoe structure for carrying systems

Info

Publication number: WO2021242202A1
Application number: PCT/TR2021/050473
Authority: WO
Inventors: Salim Tolga SOĞUCAK; Yasemin SOĞUCAK
Original assignee: Eds İnovasyon Maki̇ne Ve Otomasyon Ltd.Şti̇.
Priority date: 2020-05-23
Filing date: 2021-05-22
Publication date: 2021-12-02
Also published as: TR202008064A2

Abstract

A guide shoe assembly for guiding a platform (100) to guide rail (50) on which it moves, in transporting platforms (100) comprises a guide shoe (10) having two lateral press wheel (11) and a vertical press wheel (12) which contact to surface of the guide rail (50) and rotate during the contact; a mechanical speed governor (20) connected to one of the lateral press wheel (11) such that enable to determine speed of the platform (100) on the guide rail (50) according to the rotate speed of the lateral press wheel (11) and to stops rotational movement of the lateral press wheel (11) when the platform (100) exceeds predetermined speed; a motion connection mean (14) is connected to said guide shoe (10) in such a way that allows guide shoe (10) linearly moves by the friction force generated between the lateral pres wheel (11) and the guide rail (50) as a result of the speed governor (20) stopping the lateral pres wheel (11) and which enables driving a brake (30) by that movement.

Description

A GUIDE SHOE STRUCTURE FOR CARRYING SYSTEMS TECHNICAL FIELD

An invention relates to a guide shoe which guides transport platforms, especially elevators, along the guide rail.

PRIOR ART

An elevator cabins are guided by guide shoes along the guide rail. The guide shoes restrict the movement of the elevator cabin in two axes by contacting the lateral surfaces and the vertical surface of the guide rails provided in the "T" shape, and provide a balanced and comfortable movement for the cabin.

The guide shoes are produced in two types. First type is produced in “U” shape. End part of the “T” shaped guide rail positioned on the “U” shaped guide shoe. Here, the guide rail is lubricated to reduce the unwanted friction between the guide shoe and the guide rail, which is undesirable. However, despite lubrication, "U" shaped guide shoues are quickly destroyed and replaced at short intervals.

To eliminate the problems that is caused by “U” shaped guide shoes, the guide shoes having wheels are developed. In this structure, the guide shoes comprising wheels which two of them push lateral surfaces of the guide rail and one of them is push the vertical surfaces of the guide rail. Since this system uses a rotating wheel, the need for lubrication is eliminated and the damage due to use of the guide shoe is minimized.

Besides the guide shoes, elevator systems also comprises speed governers. Speed governors are generally connected to a gear system in the elevator engine rooms and drive the brakes on the cabin for switching to the lock position by means of a rope connected to the elevator cabin body, when the speed of the cabin exceeds a certain value.

Recently, studies have been conducted in which two structures, namely the guide shoes and speed governors, are presented together. In TR2018 / 00690, elevator parachute system having a speed governor that is coaxially connected to the guide shoe having the wheels, is disclosed. In this system, a brake is driven by transferring the limited circular movement of the wheels that occur in the wheel- guide rail friction as a result of the governor locking the guide shoe wheels. Here, except for the difficulty of transmitting the circular motion, only one brake can be driven on the same guide rail.

In another patent application numbered 2019/03914, a wheel pushing on a guide rail and a speed governer connected with the said wheel is disclosed. Also here, a brake is driven by transferring the limited circular movement of the wheels that occur in the wheel- guide rail friction as a result of the governor locking the guide shoe wheels. In spite of, this structure won’t meet the minimum contact requirements because contact is carried out over a single wheel and the device will still require a guide shoe. If a "U" shaped guide shoe is used here, the desired friction between the wheel and guide rail won’t be achieved due to the oil requirement. If guide shoes having wheels are used, the cost of device will increase considerably. In a similar way, except for the difficulty of transferring the circular motion, this system can drive only one brake on the same guide rail.

As a result, all the problems mentioned above have made it necessary to make an innovation in the related field.

AIM OF THE INVENTION

The present invention, aims to eliminate the problems mentioned above and to provide a technical improvements to the related field.

The main aim of the invention is to introduce a guide shoe structure which guides transport platforms, especially elevators, along the guide rail and which incorporating a speed governor mechanism that enables the brakes to be actuated.

Another aim of the invention is to introduce a guide shoe structure that is actuated by a linear movement occurred as a result of the speed governor stopping the wheels of the guide shoe which can be transmitted to the brake very easily and efficiently.

Another object of the invention is to introduce a guide shoe structure that enables more than one brake to be driven on the same guide rail. BRIEF DESCRIPTION OF THE INVENTION

In order to achieve all the aims mentioned above and that will emerge from the detailed description below, the present invention is a guide shoe assembly for guiding a platform to guide rail on which it moves, in transporting platforms. Accordingly, present invention comprises a guide shoe having two lateral press wheel and a vertical press wheel which contact to surface of the guide rail and rotate during the contact; a mechanical speed governor connected to one of the lateral press wheel such that enable to determine speed of the platform on the guide rail according to the rotate speed of the lateral press wheel and to stops rotational movement of the lateral press wheel when the platform exceeds predetermined speed; a motion connection mean is connected to said guide shoe in such a way that allows guide shoe linearly moves by the friction force generated between the lateral pres wheel and the guide rail as a result of the speed governor stopping the lateral pres wheel and which enables driving a brake by that movement.

In a preferred embodiment of the invention, the connection mean is aperture arranged to form a frame to which the guide shoe slidably connected.

In a preferred embodiment of the invention, the speed governor is directly connected to lateral press wheel.

In a preferred embodiment of the invention, the speed governor is directly and coaxially connected to lateral press wheel.

A preferred embodiment of the invention comprises a transmission shaft arranged to transmit the rotational movement of the lateral press wheel connected to the speed governor to the lateral press wheel on another guide shoe and to stop the other press wheel when the lateral press wheel stops.

A preferred embodiment of the invention comprises a lateral wheel housing in which said lateral press wheels are placed rotatably and a transmission arm that connects said lateral press wheels to each other in a way that does not prevent rotational movements and a recess to allow the wheels to approach each other and balance the force between the wheels when at least one of the lateral press wheels on one of said lateral wheel housings starts to become thinner.

In a preferred embodiment of the invention, the brake is arranged to compress the rail by being driven from the linear movement of the said guide shoe. A preferred embodiment of the invention comprising more than one brake is arranged to compress the guide rail by being driven from the linear movement of the said guide shoe.

In a preferred embodiment of the invention, the brake is a pair of brake friction parts arranged on both sides of the guide rail and arranged in such a way that they approach each other and contact the guide rail by the movement transmitted by the guide shoe.

In a preferred embodiment of the invention, at least one of the said brake friction parts comprises a damping mean arranged to allow the platform to slide a little further during braking.

In a preferred embodiment of the invention, the brake friction parts are in the form of a right triangle and comprises a brake housing in the form of a right triangle in which the brake friction parts are positioned.

In a preferred embodiment of the invention, said lateral press wheels comprise gears to enable them to transmit the rotational motion to each other.

In a preferred embodiment of the invention, the speed governor comprising, a plurality of tabs and a governor plate connected to each other and rotates together with lateral press wheel; a lock triggering means contacted to the governor plate; a lock tab that goes in and goes out between the tabs as a result of the contact of the governor plate with the lock trigger mean when the speed of the platform does not exceed a predetermined speed and that stops the lateral wheel by being attached to one of the said tabs, when the speed of the platform exceeds a predetermined speed and the contact between the governor plate and the lock trigger mean ends and a spring mean which one of the end of the spring mean is connected to the lock tab and other end is connected to a fixed point to prevent the lock tab to engage to the tab, when the speed of the platform does not exceed a predetermined speed.

In order to achieve all the aims mentioned above and that will emerge from the detailed description below, the present invention is a platform carrying system comprising the guide shoe assembly according to any of the preceding claims and guided on the guide rail by said the guide shoe assembly.

In order to achieve all the aims mentioned above and that will emerge from the detailed description below, the present invention is an elevator system comprising the guide shoe assembly according to any of the preceding claims and guided on the guide rail by said the guide shoe assembly. In a preferred embodiment of the invention comprises another guide shoe that doesn’t have mechanical speed governor.

In a preferred embodiment of the invention, the guide shoe assembly comprises a transmission shaft that transmits the rotational movement of the lateral press wheel connected to the speed governor to the lateral press wheel of the guide shoe that doesn’t have the mechanical speed governor.

A preferred embodiment of the invention comprises more than one brake arranged to compress the same guide rail by driving from the linear movement of the said guide shoe.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 illustrates schematic and representative view of an embodiment of the present invention.

Figure 2 illustrates front perspective view of the guide shoe.

Figure 3 illustrates isometric view of the guide rail.

Figure 4 illustrates a representative top schematic view that shows the relationship of guide shoe and rail.

Figure 5 illustrates a representative top schematic view of the guide shoe assembly.

Figure 6 illustrates a representative top view of an embodiment of the guide shoes. The elements positioned on rear section are given by dashed lines.

Figure 6. A illustrates a representative rear view of structure given in Fig. 6. The elements positioned on front section are given by dashed lines

Figure 7 illustrates representative schematic view of an embodiement of the brake.

Figure 8 illustrates representative isometric view of an embodiment of the guide roller body. Figure 8. A illustrates representative rear view of an embodiment of the guide roller body. To show transmission shaft more clearly, a couple of elements are excluded from tge drawning.

Figure 9 illustrates representative schematic view of an embodiment of the present invention.

Accompanying drawings are given solely for the purpose of exemplifying the present invention. The drawings are not meant to delimit the scope of protection as identified in the claims nor should they be referred to alone in an effort to interpret the scope identified in said claims without recourse to the technical disclosure in the description of the present invention.

REFERENCE NUMBERS OF THE FIGURES

1. Platform carrying system

10. Guide shoe

11. Lateral press wheel

111. Gear

112. Wheel hub

113. Transmission arm

12. Vertical press wheel

13. Guide shoe body

131. Lateral wheel housing 1311. Recess

132. Vertical wheel housing

14. Motion connection mean 141. Aperture

20. Governor

21. Governor plate

22. Tab body 221. Tab

23. Centrifugal mean 231. Lock triggering mean

232. Lock tab

233. Lock arm

234. Connection mean 24. Spring mean

30. Brake

31. Brake friction part 311. Damping mean

32. Brake housing

33. Brake drive arm 40. Transmission shaft 50. Guide rail

51. Lateral surface

52. Vertical surface 100. Platform

110. Frame

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, a guide shoe for platform carrying systems subject to the invention have been illustrated with non-limiting examples in order to further describe the subject matter of the invention.

Subject matter of invention is related to a guide shoe structure which guides transport platforms, especially elevators, along the guide rail and which incorporating a speed governor mechanism that enables the brakes to be actuated.

Referring to Fig. 1 ; the platform (100) is guided on at least two guide rail (50) via one guide shoes (10) for each rail and moves both ways in direction of the arrow in Figure. Flere, the platform (100) may be a elevator cabin. The guide rails are arranged in vertical axis and in elevator pit. An elevator system may comprsing a frame (110) connected to the platform (100) and preferably the guide shoe (10) is arranged on that frame (110). In guide shoe assembly, a mechanical speed governor (20) is connected to the guide shoe (10). Addition to that, the structure comprises brakes (30) that stop the platform (10) by compressing the guide rails (50).

Said brakes (30) are arranged such that are driven by the guide shoes assembly. Brakes (30) can be directly connected to the the guide shoe assembly, or they can be connected to the platform (100) or the frame (110).

As in Fig 1 . the assembly may comprise a brake on the guide rail (50) or two brake (30) that one of them on the top and other at the bottom of platform (100) and also may comprise one or two brake (30) for each guide rail (50).

Referring to Fig. 2; A mentioned guide shoes (10) are wheel type. Flere, the guide shoe (30) comprises three wheel. Two of them are laterel pres wheels (11 ) that parallel to each other and other one is vertical pres wheel (12) that perpendicular to the lateral pres wheels (12) and is arranged between said lateral pres wheels (11 ).

Said lateral and vertical pres wheels (11 , 12) are arranged on a guide shoe body so that they can be rotated relative to their central axes.

Figure 3 shows one of the guide rails (50). The guide rail (50) is approximately "T" shaped. The front part of the tip is defined as the vertical surface (52) and the lateral parts as the lateral surface (51 ).

Referring to Fig. 3 and 4; said guide rail (50) is positioned between the wheels. Flere, the lateral surface (51 ) of the rail (50) of the guide is positioned such that it contacts the lateral pres wheels (11) and the vertical surface (52) is in contact with the vertical pres wheel (12). Flere, while the platform (100) moves, the wheels rotate and providing guidance and minimizing the friction.

As can be seen in Fig. 5, a mechanical speed governor (20) is connected to the lateral pres wheel (11 ), preferably coaxially connected to. The mechanical speed governor (20) is arranged that locks the lateral pres wheel (11 ) and stops rotational movement, when the platform exceeds predetermined speed, 15% more than normal speed for elevators.

In a preferred embodiment of the invention, said lateral pres wheels (11 ) comprise gears (111 ) to transmit the rotational movement to each other. Flere, the gears (111 ) provide synchronous rotation during time of guiding anf prevent possible imbalances and the platform tilting in one direction by ensuring that the two lateral pres wheels (11 ) stops together at the moment of locking.

Referring to the Fig. 6 and 6. A; it is already disclosed that the main function of the speed governor (20) is to lock the lateral pres wheels (11 ) when the platform (100) exceeds a predetermined speed. The speed governor (20) is coaxially connected to one of the lateral pressure wheel (11 ). The speed governor (20) comprises a governor plate (21 ) rotating with the lateral pres wheel (11) and tabs (221 ) close to the edges of said governor plate (21 ). Here, the tabs (221 ) and the governor plate (21 ) may be provided in one piece, or the tab (211 ) may be provided on a tab body (22) connected to the governor plate (21 ). In Figure 6, the tab body (22) is provided in the "+" form and the tabs (221 ) are arranged at the tip of each wing.

A centrifugal mean (23) is positioned under the governor plate (21 ). The centrifugal mean (23) preferably comprises a lock trigger mean (231 ) in the form of a wheel and a lock tab (232) and a lock arm (233) that connects them to each other.

The lock arm (23) is movably connected to the guide shoe body (13) via a connecting element (234) approximately from its center. The end of the lock arm (23) with a lock tab is connected to a spring mean (24). The other end of the spring man (24) is fixed to a fixed point, preferably to the guide shoe body (13).

The outer part of the governor plate (21 ) rotates together with the lateral pres wheel (11 ) and hits the lock trigger mean (231 ) during the rotational movement and moves the lock trigger mean (231 ) in the direction of the arrow shown in Figure 6. A. As a result of this movement, the lock tab (232) at the other end of the lock lever (233) moves towards the tab (221 ) and the spring mean (24) and the lock tab (232) are pulled to back. The frequency of this movement is arranged in such a way that the lock tab (23) enters and exits the section between the tabs (221).

When the rotation speed of the lateral wheel exceeds a certain point, the impact of the governor plate (21 ) on the lock trigger element gets stronger and the lock tab (232) on the other end of the lock arm (233) moves further by limitedly overcoming the force applied by the spring mean (24) and then contacts to the tab (221 ). When the tab (221) and the lock tab (232) are engage to each other, the lock position is provided and the rotational movement of the lateral pres wheel (11 ) ends. Furthermore, elevator systems also may include an electronic speed governor as well as a mechanical speed governor.

The guide shoe (10) is connected to a motion connection mean (14) in such a way that it makes a limited movement in a linear axis. As can be seen in Figure 6, the guide shoe (10) is connected to an aperture (141 ) which forms a frame. Flere, the connection is provided by placing the guide shoe body (13) into the aperture (141 ). This structuring should not be interpretedas restrictive. For example, it is possible to provide a structure that will provide similar movement on a rail. The essential requirement here is that the guide shoe (10) moves linearly.

When the speed governor (20) locks the lateral pres wheels (11 ), the movement of the platform (100) of the guide on the rails (50) continues, since the brake (30) is not driven in any way. This movement causes friction between the lateral pres wheels (11 ) and the guide rail (50). The friction begins to drag the guide shoe (10) and the guide shoe (10) slides on the motion connection mean (14). The sliding motion can be used to trigger a brake (30). Flere, the sliding motion can be transferred by a brake drive arm (33) as shown in Figure 6.

Referring to Fig 7; the brake (30) may comprises two brake friction parts (31 ). These brake friction parts (31) are formed in right triangles and their vertical edges face each other. The guide rail (50) is positioned between these two brake friction parts (31 ). Brake friction parts (31 ) are placed in brake housings (32). Flere, the brake housings (32) are also formed as a right triangle. The brake housings (32) and the hypotenuses of the brake friction parts (31 ) are placed facing to each other. The guide (10) sliding motion is used to push the brake friction parts (31 ) in the direction of the arrow at the bottom of Fig. 7. Flere, thanks to the thrust force and the geometric form of the brake friction parts (31 ) and the brake housing (32), the brake friction parts (31 ) move in the direction of the arrow in the upper part of Fig. 7 and the distance between their vertical edges decreases, eventually clamping the guide rail (50). As a result, braking begins.

In an embodiment of the present invention, the brake (30) comprises damping elements (311 ). The damping element (311 ) is preferably a rubber part. Said damping elements (311 ) are used to prevent the platform (100) from stopping suddenly and harming the persons transported during braking. It is generally located on the back parts of the brake friction parts (31 ). In the embodiment shown in Figure 7, the damping element (311 ) is positioned between the brake friction part (31) and the brake housing (32).

When the brake (30) is positioned above the guide shoe (10), it may be driven by the brake driving arm (33) as in Figure 7. Besides, when the brake (30) is positioned at the lower part of the guide shoe (10), it may be driven at the lower part of the brake (30) in the same way by the brake driving arm (33) formed to change the direction as shown in Figure 9. Moreover, the guide shoe assembly may comprise both types of brake driving arm and driving more than one brake (30) on the same guide rail.

Referring to Fig. 8 and 8. A; the guide shoe body (13) comprises two lateral wheel houses (131 ) and a vertical wheelhouse. A recess (1311) is formed in the part of one of the said lateral wheel housings (131 ) facing the other lateral wheel housing (131 ). Besides, as can be seen in Figure 9, the lateral pressure wheels (11 ) are connected to each other by means of a transmission arm (113) provided in a way that does not interfere with their rotational movements. Flere, in addition to providing sufficient pressure on the guide rail (50) by pulling the lateral pressure wheels (11 ) together, the transfer arm (113) pulls the lateral pressure wheel (11 ) towards the recess (1311 ) in case the wheels wear out in any way, resulting in thinning. Provides compensation for distance loss.

Referring to Figures 1 and 9; the platform (100) carrying system may comprise more than one guide shoe (10). Multiple braking is enabled that one the guide shoe (10) comprising the speed governer (20) as in the inventive arrangement. Previously, it has been explained that the inventive guide shoe assembly can trigger more than one brake (30) on the same guide rail (50). In addition, if the transmission shaft (40) extending from one of the lateral pressure wheels of the guide shoe assembly is provided to be connected to the lateral pres wheel (11 ) of another guide shoe assembly that does not have a speed governor at the other end of the platform (100), the second guide shoe assembly provides the said sliding movement too, as a result of the locking movement of the wheels and can provide the thrust that will trigger a brake (30). Flere, the second guide mechanism may be arranged to trigger two brakes (30) on the same guide rail (50) in Figure 9. Accordingly, a balanced braking movement has become possible by providing braking from four corners of the platform (100) with the locking provided by a single speed governor (20). The protection scope of the invention has been mentioned in the claims that are attached and the invention cannot be limited to the embodiments described in this detailed description. It is clear that a person skilled in the art can provide similar embodiments within the scope of the above mentioned descriptions without deviating from the main theme of the invention.

Claims

1. A guide shoe assembly for guiding a platform (100) to guide rail (50) on which it moves, in transporting platforms (100) characterized by, a guide shoe (10) having two lateral press wheel (11) and a vertical press wheel (12) which contact to surface of the guide rail (50) and rotate during the contact; a mechanical speed governor (20) connected to one of the lateral press wheel (11) such that enable to determine speed of the platform (100) on the guide rail (50) according to the rotate speed of the lateral press wheel (11) and to stops rotational movement of the lateral press wheel (11) when the platform (100) exceeds predetermined speed; a motion connection mean (14) is connected to said guide shoe (10) in such a way that allows guide shoe (10) linearly moves by the friction force generated between the lateral pres wheel (11 ) and the guide rail (50) as a result of the speed governor (20) stopping the lateral pres wheel (11) and which enables driving a brake (30) by that movement.

2. A guide shoe assembly according to the claim 1 characterized by, the connection mean (14) is aperture (141) arranged to form a frame to which the guide shoe (10) slidably connected.

3. A guide shoe assembly according to the claim 1 characterized by, the speed governor (20) is directly connected to lateral press wheel (11).

4. A guide shoe assembly according to the claim 3 characterized by, the speed governor (20) is directly and coaxially connected to lateral press wheel (11).

5. A guide shoe assembly according to the claim 1 characterized by, a transmission shaft (40) arranged to transmit the rotational movement of the lateral press wheel (11 ) connected to the speed governor (20) to the lateral press wheel (11 ) on another guide shoe (10) and to stop the other press wheel (11 ) when the lateral press wheel (11) stops.

6. A guide shoe assembly according to the claim 1 characterized by, a lateral wheel housing (131) in which said lateral press wheels (11) are placed rotatably and a transmission arm (113) that connects said lateral press wheels (11 ) to each other in a way that does not prevent rotational movements and a recess (1311) to allow the wheels to approach each other and balance the force between the wheels when at least one of the lateral press wheels (11) on one of said lateral wheel housings (131) starts to become thinner.

7. A guide shoe assembly according to the claim 1 characterized by, the brake (30) is arranged to compress the rail by being driven from the linear movement of the said guide shoe (10).

8. A guide shoe assembly according to the claim 1 characterized by, comprising more than one brake (30) is arranged to compress the guide rail (50) by being driven from the linear movement of the said guide shoe (10).

9. A guide shoe assembly according to the claim 7 or 8 characterized by, the brake (30) is a pair of brake friction parts (31) arranged on both sides of the guide rail (50) and arranged in such a way that they approach each other and contact the guide rail (50) by the movement transmitted by the guide shoe (10).

10.A guide shoe assembly according to the any of claim 7-9 characterized by, at least one of the said brake friction parts (31) comprises a damping mean (311) arranged to allow the platform (100) to slide a little further during braking.

11. A guide shoe assembly according to any of the claim 7-10 characterized by, the brake friction parts (31) are in the form of a right triangle and comprises a brake housing (32) in the form of a right triangle in which the brake friction parts (31) are positioned.

12. A guide shoe assembly according to any of the preceding claims characterized by, said lateral press wheels (11 ) comprise gears (111 ) to enable them to transmit the rotational motion to each other.

13. A guide shoe assembly according to any of the preceding claims characterized by, the speed governor (20) comprising, a plurality of tabs (211) and a governer plate (21) connected to each other and rotates together with lateral press wheel (11); a lock triggering means (231) contacted to the governer plate (21); a lock tab (232) that goes in and goes out between the tabs (221) as a result of the contact of the governor plate (21) with the lock trigger mean (231) when the speed of the platform (100) does not exceed a predetermined speed and that stops the lateral wheel (11 ) by being attached to one of the said tabs (221 ), when the speed of the platform (100) exceeds a predetermined speed and the contact between the governor plate (21) and the lock trigger mean (231) ends and a spring mean which one of the end of the spring mean is connected to the lock tab and other end is connected to a fixed point to prevent the lock tab (232) to engage to the tab (221), when the speed of the platform (100) does not exceed a predetermined speed.

14. A platform (100) carrying system comprising the guide shoe assembly according to any of the preceding claims and guided on the guide rail (50) by said the guide shoe assembly.

15.A elevator system comprising the guide shoe assembly according to any of the claims 1-13 and guided on the guide rail (50) by said the guide shoe assembly

16. An elevator system according to the claim 15 characterized by, comprises another guide shoe (10) that doesn’t have mechanical speed governor (20).

17. An elevator system according to the claim 15 characterized by, the guide shoe assembly comprises a transmission shaft (40) that transmits the rotational movement of the lateral press wheel (11) connected to the speed governor (20) to the lateral press wheel (11) of the guide shoe (10) that doesn’t have the mechanical speed governor (20).

18. An elevator system according to the any of claim 15-17 characterized by, comprises more than one brake (30) arranged to compress the same guide rail

(50) by driving from the linear movement of the said guide shoe (10).