KR101513952B1 - For lifting and lowering the lift guide rollers and a method of manufacturing the same - Google Patents

For lifting and lowering the lift guide rollers and a method of manufacturing the same Download PDF

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Publication number
KR101513952B1
KR101513952B1 KR1020140146463A KR20140146463A KR101513952B1 KR 101513952 B1 KR101513952 B1 KR 101513952B1 KR 1020140146463 A KR1020140146463 A KR 1020140146463A KR 20140146463 A KR20140146463 A KR 20140146463A KR 101513952 B1 KR101513952 B1 KR 101513952B1
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KR
South Korea
Prior art keywords
circumferential surface
lift
outer circumferential
connecting member
guide roller
Prior art date
Application number
KR1020140146463A
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Korean (ko)
Inventor
최종문
정동준
Original Assignee
주식회사 프로비아
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Priority to KR1020140146463A priority Critical patent/KR101513952B1/en
Application granted granted Critical
Publication of KR101513952B1 publication Critical patent/KR101513952B1/en
Priority to PCT/KR2015/010404 priority patent/WO2016068499A1/en

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    • 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
    • B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

The present invention relates to a lifting/lowering guide roller for lift and manufacturing method for the same. An objective of the present invention is to prevent a thermosetting rubber contact part from detaching from a steel connection part and breaking and also from running without the use of lubricant such as grease used to improve the operating efficiency to avoid environmental pollution resulted from lubricant and at the same time, controlling vibration and noise when a lift goes up/down. A lifting/lowering guide roller for lift in the present invention comprises: a through-hole at the center formed to allow a bond axis fixed to a lift frame to pass through a central part; a hollow shaft designed to insert into the said bond axis; a bearing connected to the circumference of the hollow shaft; and a cover connected to the bond axis to prevent separation of the bearing from the bond axis. According to the present invention, the inner circumferential surface of the bearing is fixed and connected to the outer circumferential surface of the bearing of the lifting/lowering guide roller to enable rotation. Also, the lifting/lowering guide roller for lift in the present invention is equipped with a steel connection part of which surface is treated with a number of shot balls on the outer circumferential surface of the bearing where the inner circumferential surface with a pair of snap ring holes on both ends formed at a certain distance away from each other to fix a pair of snap rings is fixed and assembled to enable rotation and a thermosetting rubber contact part that is fixed to the outer circumferential surface of the steel connection part to stick to a guide rod in an elevator shaft, so that the lift can move up and down along the guide roller.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lifting guide roller,

The present invention relates to a lift and descent guide roller for a lift and a method of manufacturing the same, and more particularly, to a method and a device for preventing a contact member of a thermosetting rubber material from being separated from a connecting member made of steel, It is possible to suppress the vibration and noise at the time of raising and lowering the lift and to exclude the lubricant such as grease used for increasing the driving efficiency and to prevent the environmental fault caused by the lubricant, And a manufacturing method thereof.

Lifts are used to transport cargo or people in mines, factories, and high-rise buildings. They are installed to be lifted and lowered along a hoistway installed at the construction site of a high-rise building, and used to quickly transport people or cargo to a desired location.

The lift is provided with driving means so as to be able to move up and down along the hoistway, a frame is installed at the center of the back of the lift, and a plurality of guide rollers are installed on both sides of the frame.

In addition, guide rods are provided on both sides of the hoistway along the longitudinal direction, and guide rollers of the lift are supported on the guide rods.

Therefore, when the lift is lifted and lowered along the hoistway by the driving means, the guide roller of the lift is guided along the guide rod of the hoistway to guide the lifting and lowering of the lift.

Such a lift is divided into a low-speed lift, a medium-speed lift, and a high-speed lift according to the lift-up speed. Among these lifts, the middle / high-speed lift is faster than the low-speed lift and therefore the working efficiency is also improved.

When the above-mentioned lift is applied to a high-rise building, most of the low-speed lifts have been installed and used. Recently, however, the use of the middle / high-speed lifts has been increased rather than the low-speed lift considering all factors such as work efficiency, shortening of air, safety, .

Such a conventional middle / high-speed lift has various advantages because it has a faster rise / fall speed than a low-speed lift, but safety must be considered accordingly. Particularly, it is important to consider the safety of components such as guide rods and guide rollers that guide lifts that are lifted at a high speed, and it is important to consider damage caused by noise or impact generated during high-speed lift.

However, since the conventional guide roller for lift is made of a steel material, it is not suitable for middle / high-speed lift. That is, in the conventional lift, the guide rollers made of steel are brought into contact with the guide rods made of steel and lifted and lowered. Therefore, noise and impact between the guide rollers and the guide rods are not a problem when the lift is lifted and lowered at a low speed. However, when the lift is raised or lowered at a medium or high speed, the noise and impact between them are increased in proportion to the conveying speed, so that safety and working conditions are greatly reduced. In addition, since the steel guide rollers easily rust, lubricant was regularly supplied between the guide rollers and the guide rods.

In addition, the conventional industrial urethane roller has been tried many times in the art to apply it to a guide roller for a construction lift. However, since a general industrial roller has a high hardness and a low tensile strength and elongation, And it was not applied to the lift for construction.

In view of this point, Patent Document No. 10-2006-0104447 discloses a guide roller made of urethane material for a construction lift and a manufacturing method thereof.

As shown in FIG. 1 to FIG. 4, the conventional guide roller of the urethane construction for construction lift includes a coupling shaft 11 fixed to the frame 4 of the lift 3; A hollow shaft 13 having a through hole 13a formed at the center thereof and inserted into the coupling shaft 11; A bearing 14 coupled to the periphery of the hollow shaft 13; A cover (17) coupled to the coupling shaft (11) to prevent the bearing (14) from being detached from the coupling shaft (11); A first roller (18) of steel material having an inner circumferential surface coupled to an outer circumferential surface of the bearing (14) and having a first retaining groove (18a) and a second retaining groove (18b) formed on both sides of the inner circumferential surface; The first and second retaining rings 15 and 16 which are engaged with the first and second retaining grooves 18a and 18b to allow the first roller 18 to be supported on the bearing 14, ); And a second roller (19) of urethane material provided around the first roller (18) and brought into contact with the guide rod (2) of the tower crane (1) In the roller, the second roller (19) has a configuration in which the thickness of the shortest distance in the cross section is 4 to 10 mm.

In addition, a conventional general method for manufacturing a guide roller of a urethane material for a lift includes a first roller preparing step of forming a first roller by machining a steel material roller, a step of preparing a mixture liquid in which a urea raw material and a curing agent are mixed A first roller inserting step of inserting the first roller into a mold, a mixed liquid injecting step of injecting a mixed liquid into the mold in which the first roller is inserted, a step of injecting the mixed liquid, cooling the mixed liquid, A first aging step of aging the formed guide rollers at a temperature of 100 to 130 DEG C for 20 to 28 hours, and a second aging step of aging the formed agitated guide rollers at a temperature of 4 And a second aging step of aging again for 7 days to make a guide roller composed of a first roller of steel material and a second roller of urethane material around the first roller .

However, the conventional conventional guide roller for urethane construction for construction lift has a structure in which a first roller having a plurality of first irregularities formed on its periphery as described above, And a second roller made of a urethane material formed around the first roller by being poured into the first roller, and a second roller made of a urethane material is formed around the first roller having a smooth surface including the first irregularities, The surface of the first roller and the inner surface of the second roller are separated from each other by vibrations and heat, and thus the second roller is broken and a large accident due to the driving of the lift is generated.

Patent Application No. 10-2006-0104447, filing date October 26, 2006 The name of the invention; Guide roller of urethane material for construction lift and manufacturing method thereof

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a rubber- Which is used for preventing the contact member of the thermosetting rubber material from breaking apart from the connecting member made of steel and preventing vibrations and noise when the lift is lifted and lowered, The present invention is directed to a lift guide raising and lowering guide which can eliminate the lubricant of the lift and prevent the environmental fault caused by the lubricant, and a manufacturing method thereof.

Other objects of the present invention will become apparent as the description proceeds.

According to an aspect of the present invention, there is provided a lift guide raising and lowering guide roller, wherein a through hole is formed at a central portion of the guide rail so that the engaging shaft fixed to the frame of the lift can be passed through the center, And a cover for preventing the bearing from being separated from the coupling shaft, the inner peripheral surface of which is fixed to the outer peripheral surface of the bearing of the lift, A pair of snap ring fixing grooves spaced apart from each other are formed at one end and the other end of the inner circumferential surface so as to fix the pair of snap rings and the outer circumferential surface is surface-treated with a plurality of shot balls through a surface processor, A connecting member made of a steel material, and an outer circumferential surface of the connecting member, Contact with, and is characterized in that comprising an abutment member of the thermosetting rubber materials that are adapted to be lowered W, along them.

In order to prevent the inner circumferential surface of the contact member from being separated from the outer circumferential surface of the connecting member due to use for a long time by enlarging the fixing area of the contact member of the thermosetting rubber material fixed to the outer circumferential surface of the connecting member, And a plurality of fastening grooves formed by being surface-treated with a plurality of shot balls.

According to another aspect of the present invention, there is provided a method of manufacturing a lifting guide roller for a lift, the method comprising: preparing a connecting member made of steel; Preparing a mixed liquid which is fixed to the outer circumferential surface of the connecting member and is made of a mixture of a urethane raw material and a curing agent to make a contact member which is in direct contact with the guide bar of the hoistway and which moves up and down, A step of applying an adhesive to the outer circumferential surface of the connecting member; and a step of injecting a mixed liquid into the mold after injecting the connecting member coated on the outer circumferential surface of the adhesive by the above step into the mold, The mixed liquid injected into the mold side is fixed to the outer circumferential surface of the connecting member and contacts the guide rod of the hoistway, And aging at a room temperature by curing the mixture to form a guide roller made of a steel material connecting member and a urethane material contact member on the outer circumferential surface, .

As described above, according to the present invention, the contact member of the thermosetting rubber material is cured through the adhesive on the outer circumferential surface of the connecting member made of steel, which has been pretreated with a shot ball, Since the lifting guide raising and lowering guide rollers are manufactured, it is possible to prevent the contact member of the thermosetting rubber material from being broken by being separated from the connecting member made of steel due to the use of the lift lifting guide roller for a long time, There is an effect that can be done.

In addition, since the lubricant such as grease used to suppress vibration and noise when the lift is lifted or lowered and to improve the driving efficiency is excluded, it is also possible to prevent the environmental fault caused by the lubricant.

1 is a schematic front view showing a conventional general construction lift and a tower crane.
FIG. 2 is a rear view showing a state where a guide roller is installed on a lift of a conventional construction lift and a tower crane.
Figure 3 is a partial perspective view of Figure 2;
FIG. 4 is a sectional view showing the state where the guide roller shown in FIG. 3 is installed.
5 is a cross-sectional view showing the lift and lower guide rollers according to the present invention.
FIG. 6 is a cross-sectional view showing a lift and a descent guide roller according to another embodiment of the present invention.
FIG. 7 is a flowchart for explaining a method of manufacturing a lift and descent guide roller according to another embodiment of the present invention.

Hereinafter, one embodiment of a lift and descent guide roller for a lift according to the present invention and a method of manufacturing the same will be described in detail.

First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the gist of the invention.

As shown in the drawings, the lift guide raising and lowering guide roller according to the present invention and its manufacturing method are manufactured by curing a contact member made of a thermosetting rubber material through an adhesive on the outer circumferential surface of a connecting member made of steel, , And a contact member made of a thermosetting rubber material for a long time can be prevented from breaking apart from the connecting member made of steel.

That is, the lifting / lowering guide roller 100 according to the present invention has a through hole 21a formed at the center thereof so as to allow the coupling shaft fixed to the frame of the lift to pass through the center, A bearing 22 coupled to the hollow shaft 21 and coupled to the coupling shaft to allow the bearing 22 to be separated from the coupling shaft And a pair of snap rings 24 can be fixed to one end and the other end of the inner circumferential surface of the bearing 22 of the lifting and lowering part 20, A pair of snap ring fixing grooves 111 spaced apart from each other so as to be spaced apart from each other and having a surface treated with a plurality of shot balls through a surface processor, ) Is attached to the outer circumferential surface Is secured to comprise a contact member 130 of the thermoset rubber material is provided in contact with the shaft of the guide rod to be lowered W, along them.

Hereinafter, the lift and downward guide rollers according to the present invention will be described in detail with reference to the accompanying drawings.

5, the connecting member 110 of the lift-type ascending / descending guide roller 100 according to the present invention has an inner peripheral surface on the outer peripheral surface of the bearing 22 of the lifting and lowering portion 20 And a pair of snap rings 24 can be fixed to one end and the other end of the inner circumferential surface, and the contact area of the contact member 130 made of a thermosetting rubber material is enlarged on the outer circumferential surface, (130) is prevented from being separated.

That is, the connecting member 110 is formed of an electro-galvanized hollow steel pipe to prevent oxidation and corrosion on the surface, and is provided with a pair of snap rings 24 at one end and the other end of the inner circumferential surface, A plurality of snap ring fixing grooves 111 spaced apart from each other are formed on the outer circumferential surface of the contact member 130. The outer circumferential surface of the contact member 130 is made of thermosetting rubber material, A plurality of fastening grooves 113 formed by surface treatment with a plurality of shot balls are formed through a surface treatment machine so as to prevent separation from the outer circumferential surface of the connecting member 110.

Here, the outer circumferential surface of the connecting member 110 is formed as a flat surface 115 so that it can be easily manufactured and formed with a plurality of fastening grooves 113.

Both ends of the outer circumferential surface of the connecting member 110 are formed by protruding outwardly extending fixing protrusions 117 to prevent the contact members 130 from being detached from the contact members 130 upon curing or after curing.

The outer circumferential surface of the connecting member 110 may be formed as a flat surface 115, but the present invention is not limited thereto. As shown in FIG. 6, The outer circumferential surface of the connecting member 110 'may be formed as a concave surface 115' having an arc shape.

 As shown in FIG. 5, the contact member 130 is fixed to the outer circumferential surface of the connecting member 110 through an adhesive, and is brought into contact with the guide bar of the hoistway, and is capable of moving up and down.

At this time, the contact member 130 is formed by mixing a curing agent with urethane.

7, the method for manufacturing a lifting / lowering guide roller according to still another aspect of the present invention includes the steps of preparing a connection member 110 made of a steel material (S210) The urethane raw material and the curing agent are mixed with each other to form the contact member 130 which is fixed to the outer circumferential surface of the connecting member 110 and directly contacts the guide bar of the elevator shaft, (S230) of applying an adhesive to the outer circumferential surface of the connection member (110) when the mixed solution is manufactured in the step (S220), and a step (S230) of applying an adhesive to the outer circumferential surface of the connection member A step S240 of injecting the mixed liquid into the mold after the connecting member 110 coated on the outer circumferential surface of the adhesive is injected into the mold and the mixed liquid injected into the mold by the step S240, (110) (S250) of curing the mixture to be formed into a contact member (130) which is fixed on the surface of the guide member Aging for a day to make a guide roller made up of a steel member connecting member 110 and a urethane-made contact member 130 on the outer circumferential surface thereof.

Also, the step S235 of preheating the mold to prevent the mixture liquid injected into the mold side from being hardened during the injecting of the coupling member 110 into the mold and before the injection of the mixed solution (S240).

Further, after the curing step (S250), the step (S255) of re-hardening the steel sheet for 5 to 36 hours in a heating furnace having an internal temperature of 50 to 80 캜 so as to increase the binding force of the mixed solution is further included.

In the preparation of the mixed liquid (S220), the urethane raw material and the curing agent are prepared by heating at a temperature of 50 to 60 캜 so that they can be mixed well.

Hereinafter, a method of manufacturing the lift and descend guide rollers according to another embodiment of the present invention will be described in detail as follows.

In the method for manufacturing a lift and elevating guide roller according to still another aspect of the present invention, the connecting member preparing step S210 is a step of preparing the connecting member 110 of the lifting and lowering guide roller, (S211) cutting a hollow steel member so as to be usable as a connecting member (110) of the lift-up and down guide rollers as shown in Fig. (S212) for electro-galvanizing to prevent corrosion, and a plurality of plated steel members through a surface processor so as to widen the fixation area of the mixed solution fixed through the adhesive by the step S212 And a step S213 of performing surface treatment with a short ball.

The curing step S250 is a step of curing the mixture in a mold at a temperature of 90 to 150 DEG C for 15 to 20 hours so as to have a bond.

In the case of manufacturing the elevating and lowering guide rollers according to the present invention, as shown in FIGS. 5 and 7, the hollow steel refit is cut and the surface of the cut steel member Galvanized to prevent oxidation and corrosion.

When the zinc plating process is performed, a plurality of fastening grooves 113 are formed by surface treatment with a plurality of shot balls through a surface processor so as to widen the fixing area of the mixed solution fixed through the adhesive, .

When the connecting member 110 is prepared as described above, the urethane raw material and the curing agent, which are fixed to the outer circumferential surface of the connecting member 110 and directly contact the guide bar of the elevator shaft, The mixed solution is prepared by heating at a temperature of 60 캜 so that mixing is performed well.

After the mixed liquid is prepared, an adhesive is applied to the outer circumferential surface of the connecting member 110, and then the connecting member 110 coated on the outer circumferential surface of the connecting member 110 is put into the mold.

When the connection member 110 is inserted into the mold side, the mold is preheated to prevent the mixture liquid from hardening during injection.

When the coupling member 110 is inserted into the mold and the mixture is injected into the preheated mold, the mixture is cured in the mold at a temperature of 120 ° C for 17 hours.

When the mixed liquid is cured on the outer circumferential surface of the connecting member as described above, it is removed from the mold and re-cured for 12 hours in a furnace having an internal temperature of 70 캜 so as to increase the binding force of the mixed liquid.

When the re-curing is completed as described above, aging is performed at room temperature for 12 days to complete the manufacture of the lifting / lowering guide rollers composed of the steel connecting member 110 and the urethane-made contact member 130 on the outer circumferential surface.

As shown in the test report of FIG. 8, the thus produced lift up and down guide rollers had a hardness of 94 to 97 (Shore A), a tensile strength of 43 (Mpa), an elongation of 380 (%), (kN / m), and rebound resilience of 42 (%), and all characteristics are improved compared with general industrial urethane.

Therefore, even if the elevating and lowering guide rollers according to the present invention are used for a long time with high load, high speed, high temperature, oil resistance, high pressure wheels and rollers, the contact members are not separated from the connecting members and are not damaged thereby, It is very suitable.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

20; Lift up and down parts
21; Hollow shaft
22; bearing
23; cover
24; Snap ring
100; Lift winch and descent guide rollers
110; Connecting member
130; Contact member

Claims (7)

In the lift and descent guide rollers,
A hollow shaft 21 having a through hole 21a at its center so as to be inserted into the coupling shaft so as to penetrate the coupling shaft fixed to the frame of the lift, And a cover (23) coupled to the coupling shaft and preventing the bearing (22) from being detached from the coupling shaft, the bearing (22) of the lift and elevation and descent part (20) A pair of snap ring fixing grooves 111 spaced apart from each other are formed at one end and the other end of the inner circumferential surface so as to fix a pair of snap rings 24, A connecting member 110 made of steel and surface-treated with a plurality of shot balls;
And a contact member 130 made of a thermosetting rubber material, which is fixed to the outer circumferential surface of the connecting member 110 through an adhesive agent and contacts the guide bar of the hoistway,
The contact area 130 of the contact member 130 is fixed to the outer circumferential surface of the connecting member 110 through the adhesive agent so that the inner circumferential surface of the contact member 130 is separated from the outer circumferential surface of the connecting member 110 A plurality of fastening grooves 113 formed by surface treatment with a plurality of shot balls through a surface processor are formed so as to prevent the balls from being separated from each other,
The outer circumferential surface of the connecting member 110 is formed as a flat surface 115 so as to facilitate fabrication and formation of a plurality of fastening grooves 113 and both ends of the outer circumferential surface are contacted with the contact member 130 upon curing or after curing Further comprising a fixing protrusion (117) extending outwardly to prevent the fixing member (110) from being detached from the member (130).
delete delete The method according to claim 1,
Wherein the outer circumferential surface of the connecting member is formed as a concave surface 115 'having an arc shape so as to increase the surface area and increase the fixing force of the contact member 130.
A method for manufacturing a lift and descent guide roller,
Preparing a connection member 110 made of steel (S210);
When the connecting member 110 is prepared in the step S210, the urethane raw material is fixed to the outer circumferential surface of the connecting member 110 and directly contacts the guide bar of the hoistway, (S220) for preparing a mixed solution comprising a mixture of a binder and a curing agent;
A step S230 of applying an adhesive to the outer circumferential surface of the connecting member 110 when the mixed solution is manufactured in the step S220;
A step S240 of injecting a mixed solution into the mold after the connection member 110 coated on the outer circumferential surface of the mold by the step S230 is injected into the mold;
Curing the mixed liquid, which is injected to the mold side by the step S240, to be fixed to the outer circumferential surface of the connecting member 110 so as to be brought into contact with the guide rod of the elevator shaft and to be formed into the contact member 130 (S250);
(S260) of aging the mixed solution at room temperature by curing the mixed solution at step S250 to make a guide roller made of a steel material connecting member (110) and a contact member (130) made of urethane material on the outer circumferential surface,
The step S210 of preparing the connecting member 110 includes a machining step S211 of cutting the hollow steel member so as to be used as the connecting member 110 of the lift and elevating guide rollers, (S212) of electroplating to prevent oxidation and corrosion on the surface of the steel material processed by the step (S212), and a fixing area of the mixed solution adhering to the steel material plated by the step (S212) (S213) of performing surface treatment with a plurality of shot balls through a surface processor so as to be widened,
A step S235 of preheating the mold to prevent the mixture liquid injected into the mold side from hardening during injection after the connection member 110 is inserted into the mold and before the mixed liquid injection step S240,
Further comprising a step (S255) of curing the mixture for 5 to 36 hours in a heating furnace having an internal temperature of 50 to 80 DEG C so as to increase the binding force of the mixed solution after the curing step (S250) Wherein the guide rollers are moved in a clockwise direction. delete delete
KR1020140146463A 2014-10-27 2014-10-27 For lifting and lowering the lift guide rollers and a method of manufacturing the same KR101513952B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140146463A KR101513952B1 (en) 2014-10-27 2014-10-27 For lifting and lowering the lift guide rollers and a method of manufacturing the same
PCT/KR2015/010404 WO2016068499A1 (en) 2014-10-27 2015-10-01 Up/down movement guide roller for lift and method for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140146463A KR101513952B1 (en) 2014-10-27 2014-10-27 For lifting and lowering the lift guide rollers and a method of manufacturing the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102609795B1 (en) * 2023-07-19 2023-12-06 주식회사 디케이이엔지 Rollers for construction lifts

Citations (4)

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Publication number Priority date Publication date Assignee Title
KR20080037386A (en) * 2006-10-26 2008-04-30 케이엔에프중공업주식회사 Guide roller of urethane and the process of manufacture for lift
JP2009203030A (en) * 2008-02-28 2009-09-10 Mitsubishi Electric Corp Roller for elevator equipment
KR101203511B1 (en) * 2011-07-22 2012-11-22 (주)에코청진 Block surface processing method
KR20130053547A (en) * 2011-11-15 2013-05-24 오티스 엘리베이터 컴파니 Double injection molding roller for elevator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011162284A (en) * 2010-02-08 2011-08-25 Nok Corp Guide roller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080037386A (en) * 2006-10-26 2008-04-30 케이엔에프중공업주식회사 Guide roller of urethane and the process of manufacture for lift
JP2009203030A (en) * 2008-02-28 2009-09-10 Mitsubishi Electric Corp Roller for elevator equipment
KR101203511B1 (en) * 2011-07-22 2012-11-22 (주)에코청진 Block surface processing method
KR20130053547A (en) * 2011-11-15 2013-05-24 오티스 엘리베이터 컴파니 Double injection molding roller for elevator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102609795B1 (en) * 2023-07-19 2023-12-06 주식회사 디케이이엔지 Rollers for construction lifts

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