JP5818461B2 - Elevator guide device - Google Patents

Description

  The present invention relates to an elevator guide device.

  The elevator includes a hoistway that extends vertically and a car that is movably provided in the hoistway. The car suspended from the main rope is guided up and down by guide rails standing on the hoistway. As exemplified in Patent Document 1, the car is in contact with the guide rail via a resin shoe, and is guided so as to smoothly move up and down while reducing vibration and noise. Further, in order to obtain such a mitigating effect, liquid lubrication oil is constantly supplied to the resin shoe from the oil feeder so that friction and wear due to contact with the guide rail do not increase.

  However, since the viscosity of the lubricating oil changes between summer and winter, it is necessary to pay attention to a supercharged state in summer and to pay attention to a shortage of oil supply in winter, which is not easy to manage. Also, if a supercharged condition occurs, the lubricating oil will scatter around the shoe and contaminate the hoistway, or a large amount of oil will accumulate in the oil receiver, requiring frequent waste oil treatment, which is very laborious. It was hanging. On the other hand, when an insufficient lubrication state occurs, there is a risk that the friction between the shoe and the rail increases, causing problems such as increased vibration.

JP 2004-224515 A

  The present invention has been made in view of the above, and provides an elevator guide device capable of reducing oil contamination and waste oil treatment in a hoistway while suppressing vibration and noise associated with a car guide. The purpose is to do.

  In order to achieve the above-described object, an elevator guide device according to the present invention includes a rolling element provided so as to roll in contact with a rail, and a support body that supports the rolling element in a freely rolling manner. The support body is provided with a slide receiving portion that slides on the outer surface of the rolling element and applies sliding resistance to the rolling element.

  According to the elevator guide apparatus of the present invention, it is possible to reduce oil contamination and waste oil treatment in the hoistway while suppressing vibration and noise associated with the car guide.

It is a figure which shows the elevator with which the guide apparatus which concerns on embodiment of this invention is applied. It is the top view seen from the II-II line of FIG. FIG. 3 is a diagram showing a configuration of a rolling element and a support in the first embodiment. It is a figure of the same aspect as FIG. 3 regarding Embodiment 2. FIG. It is a figure of the same aspect as FIG. 3 regarding Embodiment 3. FIG. It is a figure of the aspect substantially the same as FIG. 3 regarding Embodiment 4. FIG. It is a figure of the substantially the same aspect as FIG. 2 regarding Embodiment 5. FIG.

  Embodiments of an elevator guide device according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an elevator to which a guide device according to the present embodiment is applied. The elevator 1 includes a hoistway 3 that extends vertically and a car 5 that is movably provided therein. The car 5 hung from the main rope 7 is guided by a guide rail 9 provided in the hoistway 3 and moves up and down. A rail base 13 is provided on the pit floor 11 at the bottom of the hoistway 3, and the guide rail 9 is erected on the rail base 13.

  The guide device 51 is provided on the upper and lower sides of the car 5 for each guide rail 9. FIG. 2 is a plan view taken along line II-II in FIG. FIG. 3 is a diagram showing a front surface, a side surface, and a bottom surface of a rolling element and a support body, which will be described later, with the surface viewed from the arrow III in FIG.

  The guide device 51 includes a rolling element 53 provided so as to roll in contact with the guide rail 9, and a support body 55 that supports the rolling element 53 in a rollable manner. In the present embodiment, the rolling element 53 is a roller 57 configured as a cylindrical rotating body.

  In the present embodiment, as shown in FIG. 2, the guide device 51 has a U-shape in plan view so as to surround the three surfaces corresponding to the three surfaces of the tip of the ridge portion of the guide rail 9. The rollers 57 are arranged in three rows so as to correspond to the three surfaces. As shown in FIG. 3, a plurality of rollers 57 are vertically arranged for each row. . Similarly, three supports 55 are also provided so as to support the plurality of rollers 57 in each row so as to correspond to the three surfaces.

  Hereinafter, with reference to FIG. 3, the details of the guide device will be described with one row as a representative. First, the support body 55 has a two-part structure composed of a pressing portion 59 disposed on the guide rail side and a receiving portion 61 disposed on the opposite side. The plurality of rollers 57 are supported so as to be sandwiched between the pressing portion 59 and the receiving portion 61. As an example, the presser part 59 and the receiving part 61 can be bonded with an adhesive or welded by ultrasonic waves after a plurality of rollers 57 are incorporated.

  A holding space 63 corresponding to each roller 57 is provided on the support body 55 in which the pressing portion 59 and the receiving portion 61 are combined. The holding space 63 is a space that holds the roller 57 in a coreless manner so that the roller 57 does not fall off the support body 55, and the roller 57 is accommodated and supported in the holding space 63.

  Further, the support body 55 is provided with a sliding receiving portion 65 that slides on the outer surface of the roller 57 and applies sliding resistance to the roller 57. The sliding receiving portion 65 is configured by a portion that defines a holding space 63 in the support body 55. In the present embodiment, the sliding receiving portion 65 is a portion where the outer surface portion of the roller 57 opposite to the side abutting on the guide rail abuts, and is an arcuate concave curved surface portion as viewed in FIG. is there.

  Furthermore, in the present embodiment, as an example, a relief recess 67 is formed in the axially central wide area of the roller 57 in the sliding receiving portion 65. That is, the presence of the relief recess 67 causes a portion between the roller 57 and the sliding receiving portion 65 where the contact over the entire axial width of the roller 57 is not ensured. This is because the rotation of the roller 57 may be disturbed if the roller 57 is configured to be in contact with the sliding receiving portion 65 over the entire axial width of the roller 57 that is cylindrical, so that the roller 57 is cylindrical. Even if it exists, it is for rotating neatly in a coreless manner.

  The support body 55 has a plurality of rectangular windows 69 that allow the rolling elements to partially protrude on the rail facing side. These windows 69 are provided corresponding to each roller 57. A lip portion 71 extending at an acute angle along the outer surface of the roller 57 is formed at the edge of the support 55 that exposes the roller 57, that is, the upper and lower edges that define the window 69. . Note that the window 69 is set to a size such that the roller 57 does not fall off to the guide rail side.

  Furthermore, the material of each part is demonstrated. First, as the material of the support 55, a resin with reduced frictional resistance is suitable, and more preferably, it can be composed of an oil-containing resin. Specifically, as an example of a relatively inexpensive embodiment, a resin of a type in which a lubricating oil is impregnated with polyethylene can be given.

  On the other hand, examples of the material of the roller 57 include nylon and polyethylene that can be put into practical use without a sufficient amount of lubricating oil when combined with a support made of an oil-containing resin. Furthermore, when it is not desired to bring the lubricating oil component to the opposite guide rail side as much as possible, it is possible to reduce the frictional resistance even under almost no lubrication. For example, by impregnation with polytetrafluoroethylene (PTFE) or silicone. Materials that can be included.

Next, the operation of the elevator guide device according to the present embodiment will be described. The relationship between the friction characteristics of the guide rail, rolling element and sliding receiving part is
The friction coefficient between the guide rail and the rolling element is greater than the friction coefficient between the rolling element and the sliding receiving portion. As a specific example, the friction coefficient due to contact between the guide rail 9 whose surface is machined to a roughness of about 20 μm and the roller 57 is about 0.15 to 0.2. The coefficient of friction with the moving receiving portion 65 is configured to be about 0.1.

For this reason, the contact aspect of a guide rail, a rolling element, and a slide receiving part is
Between the guide rail and the rolling element: rolling contact Between the rolling element and the sliding receiving part: When the car 5 is moved up and down, the roller 57 slides against the sliding receiving part 65 while sliding. The rail 9 rotates without slipping. Therefore, even if liquid lubricating oil is not supplied between the guide rail 9 and the roller 57, the roller 57 functions without being worn by the guide rail 9. In addition, since the contact mode with the guide rail 9 is reduced in friction and wear in this way, even when the roller 57 travels (slides) at an angle with respect to the car 5 ascending / descending direction, no squeal is generated. It is suppressed.

  In this regard, it is possible to assume a mode in which the fixed type resin shoe as described above is impregnated with a lubricant and used to omit the lubricating oil. May require replacement, or the friction between the guide rail and the shoe may increase and cause a noise. Further, in the case of a guide rail formed of a steel plate or a guide rail whose surface is mirrored after being used for a long time, the generation of squealing noise due to an increase in the coefficient of static friction may become more prominent. On the other hand, in the present embodiment, since the roller contacts the guide rail in a rolling manner, such a problem does not occur.

  Further, in the present embodiment, the roller 57 rotates without sliding with respect to the guide rail 9 while sliding with respect to the sliding receiving portion 65, so that the following damping effect is obtained. When the car 5 stops and the user gets on and off, the roller 57 slightly slides with respect to the guide rail 9 due to the change in the weight thereof, so that the roller 57 slightly slides with respect to the slide receiving portion 65. Since the damping effect due to the slip resistance can be obtained, the occurrence of fluffy shaking in the car 5 is suppressed, and the user getting on and off does not feel uneasy or uncomfortable.

  In this regard, as a comparative example with the present embodiment, it is possible to assume a mode in which the roller in the bearing support mode is in contact with the guide rail. Friction with the guide rail cannot be obtained sufficiently, and the car shakes flickering every time the user gets on and off, giving the user anxiety and the like. In the present embodiment, unlike the case where the roller is simply provided, the roller receives a sliding resistance from the sliding receiving portion, and thus the above-described problem does not occur.

  The roller 57 that rotates when the car 5 moves up and down has a low friction coefficient with the lubricating oil film when the car 5 is raised and lowered. However, the lubricating oil film is hardly formed when the car 5 is stopped. There is a characteristic that the coefficient increases. This oil film is hard to be formed on the side of the hard metal guide rail 9 having a rough surface, so that the friction coefficient between the guide rail 9 and the roller 57 is always higher than the friction coefficient of the sliding receiving portion 65. The roller 57 is made difficult to slide on the surface of the guide rail 9. Also by this, the sliding resistance due to the sliding receiving portion 65 sufficiently acts on the roller 57, and the above-described damping effect is made more reliable.

  As described above, according to the elevator guide device of the present embodiment, the guide rail and the rolling device come into contact with each other in a rolling manner, so that vibration and noise are not required even if liquid lubricant is not supplied between the rail and the guide device. In addition, by not relying on liquid lubricating oil, it is possible to reduce oil contamination and waste oil treatment in the hoistway. In addition, since the rolling element is given a damping action due to the sliding resistance to the outer surface, the rolling element can be used to get on and off the user while obtaining the above-mentioned effect of reducing oil stains and waste oil treatment. Occasional vibration of the car floor can be suppressed.

  Furthermore, since the support part is supported in a coreless manner without interposing a bearing or the like and the defining part of the holding space functions as a sliding receiving part, it is possible to avoid an increase in the size of the apparatus while using rolling elements.・ Elevator size can be avoided. In addition, due to the support in a coreless manner, the rail and the rolling element include a complicated contact relationship between the rolling element and the rolling element and the sliding receiving part. Accuracy and position freedom can be maintained. Thereby, the followability of the rolling element with respect to the guide rail can be improved during the guide.

  Further, since the support is made of an oil-containing resin, an appropriate sliding resistance with reduced friction can be given to the rolling elements without using liquid lubricant. Furthermore, since the rolling element is a cylindrical rotating body containing polytetrafluoroethylene (PTFE) or silicone, the friction between the rolling element and the guide rail can be appropriately reduced without using liquid lubricating oil. it can.

  In addition, a lip portion that extends at an acute angle along the outer surface of the rolling element is formed on the edge of the supporting member that exposes the rolling element, so that foreign matter is mixed between the rolling element and the support. Can be prevented, and the long-term stabilization of the sliding resistance can be ensured.

  The rolling element is a cylindrical rotating body, and the support body has a two-part structure composed of a pressing part and a receiving part, and is supported so that the rolling element is sandwiched between the pressing part and the receiving part. The rolling element can be easily held rotatably in a coreless manner.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described based on FIG. FIG. 4 is a diagram of the same mode as FIG. 3 regarding the second embodiment. The second embodiment is the same as the first embodiment except for the parts described below. The support body 155 of this embodiment includes a main body portion 155a and a plurality of lid portions 155b. As shown by the arrow IV, the roller 57 is inserted into the main body 155a from the rotational axis direction. That is, the main body portion 155a is provided with a holding space 63 corresponding to each roller 57 and an opening 173 that allows entry / exit into the holding space 63, and each opening 173 is formed by a corresponding lid portion 155b. Opened / closed.

  A soft solid lubricant is sealed in the support body 155 so as to be in contact with the outer surface of the roller 57. As a specific example, in the present embodiment, grease 175 is sealed in the holding space 63.

  According to the second embodiment as described above, as in the first embodiment, it is possible to reduce oil contamination and waste oil treatment in the hoistway while suppressing vibration and noise associated with the car guide. Further, since the rolling element is inserted into the support body from the direction of the rotation axis, the columnar rotating body can be easily held rotatably in a coreless manner. Furthermore, according to the second embodiment, since the soft solid lubricant that comes into contact with the outer surface of the rolling element is enclosed in the support body, it is possible to reduce oil contamination and waste oil treatment in the hoistway. Nevertheless, the lubrication performance and damping performance can be maintained over a long period of time.

Embodiment 3 FIG.
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 5 is a diagram of the same mode as FIG. 3 regarding the third embodiment. The third embodiment is the same as the first embodiment except for the parts described below. The support body 255 according to the present embodiment has a one-piece structure, has a window 69 for partially projecting the roller 57 on the rail facing side 259, and has a curved side 261 opposite to the rail facing side. It is formed so as to be able to be bent in an arc shape as an inner side. Further, an insertion port 277 extending substantially along the insertion direction of a roller 57 described later is provided at an edge portion defining the window 69. First, the roller 57 bends the support 255 in an arc shape with the opposite side 261 of the rail facing side as shown by an arrow A, and the window 69 (insertion port 277) is slightly expanded. In the state, as shown by the arrow B, the guide rail is inserted into the holding space 63 from the guide rail side.

  According to the third embodiment as described above, as in the first embodiment, it is possible to reduce oil contamination and waste oil treatment in the hoistway while suppressing vibration and noise associated with the car guide. In addition, the rolling element can be easily held rotatably in a coreless manner, and further, the rolling element can be inserted from the window in a state of being curved in an arc shape, so that the support body can have a one-piece structure.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a diagram of the same mode as FIG. 3 regarding the fourth embodiment. The fourth embodiment is the same as the first embodiment except for the parts described below. The support body 355 of this embodiment includes a main body portion 355a and a protruding piece portion 355b. The holding space 63 corresponding to each roller 57 is defined by the body portion 355a on both the left and right sides (both ends of the rotating shaft of the roller 57) and the rear side (the side opposite to the guide rail 9), and the upper and lower sides are projecting piece portions. Defined by 355b. Each holding space 63 is filled with grease 175.

  The projecting piece portion 355b extends toward the guide rail 9 and supports the roller 57 from above or below. In the present embodiment, the protruding piece portion 355b functions to delimit adjacent holding spaces 63 arranged vertically. Similar to the first embodiment, a lip 71 is provided at the tip of the projecting piece 355b. Side surfaces 379 on both left and right sides of the projecting piece portion 355b are formed by being separated from corresponding portions of the main body portion 355a located outside by a notch 381. Thereby, the front-end | tip of the protrusion piece part 355b is formed so that it can curve in the up-down direction. Due to the presence of the protruding piece portion 355b, the roller 57 is inserted as follows. First, the tip of the projecting piece 355b is bent as shown by the arrow A, the holding space 63 to be inserted is expanded, and the roller 57 is inserted into the holding space 63 from the guide rail side.

  According to the fourth embodiment, as in the first embodiment, it is possible to reduce oil contamination and waste oil treatment in the hoistway while suppressing vibration and noise associated with the car guide. In addition, the rolling element can be easily held rotatably in a coreless manner, and the entrance of the holding space can be widened by the curvature of the projecting piece, so that the support body can have a one-piece structure. Further, even if the entire support is not curved, only the target portion needs to be curved, so that the roller insertion does not become large. Further, since it is not necessary to bend the entire support, it is easier and more reliable to inject grease and hold the grease thereafter. Furthermore, since the projecting piece itself is curved, a large insertion path into the holding space can be taken, and thus a lip can be provided without hindering insertion.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described with reference to FIG. (A) of FIG. 7 is a figure of the same aspect as FIG. 2 regarding Embodiment 5, (b) of FIG. 7 is a figure which shows the support aspect of a roller along the VII-VII line of (a). is there. The fifth embodiment is the same as the first embodiment except for the parts described below.

  The support body 455 of the fifth embodiment has a two-part structure composed of a pressing part 459 and a receiving part 461. The presser portion 459 and the receiving portion 461 may be made of the same material as the presser portion 59 and the receiving portion 61 of the first embodiment. The presser portion 459 has a U shape in plan view, and the receiving portion 461 has a U shape on the outside of the press portion 459 in plan view. Each roller 57 is inserted in a holding space 63 provided in the presser portion 459 and arranged vertically so as not to fall off. The roller 57 is rollable in the holding space 63 and receives sliding resistance by the sliding receiving portion 65 which is the inner surface of the receiving portion 461, as in the above embodiment.

  Also in this fifth embodiment, as in the first embodiment, it is possible to reduce oil contamination and waste oil treatment in the hoistway while suppressing vibration and noise associated with the car guide. In addition, regarding the configuration that allows the rolling elements to function with respect to the three surfaces of the guide rail, the entire three surfaces can be configured with two parts, and the rolling elements for the three surfaces can be disposed and removed integrally. In addition, there is also an advantage that the support can be easily assembled and disassembled when viewed over the entire three surfaces.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  For example, the form of the rolling element is not limited to a cylindrical shape, and can be implemented as a sphere. Further, the presence or absence of grease or the presence or absence of a lip portion is not limited in the above-described embodiment, and the presence or absence of them can be appropriately modified in each of the above-described embodiments.

  51 Guide Device, 53 Rolling Element, 55, 155, 255, 355, 455 Support, 57 Roller, 59, 459 Pressing Part, 61,461 Receiving Part, 63 Holding Space, 65 Sliding Receiving Part, 69 Window, 71 Lip Part, 175 grease, 355b protruding piece part.

Claims (11)

A rolling element provided to roll in contact with the rail;
A support that supports the rolling element so as to roll freely,
The support is provided with a sliding receiving portion that slides with the outer surface of the rolling element ,
The sliding receiving portion, the guide device <br/> elevator for imparting sliding resistance rolling member slides with the outer surface of the rolling element. The support has a holding space for holding the rolling element in a coreless manner so that the rolling element does not fall off,
2. The elevator guide device according to claim 1, wherein the sliding receiving portion is configured by a portion of the support body that defines the holding space.   The elevator guide apparatus according to claim 1 or 2, wherein the support is made of an oil-containing resin.   The elevator guide device according to any one of claims 1 to 3, wherein a soft solid lubricant that contacts an outer surface of the rolling element is enclosed in the support.   The elevator guide device according to any one of claims 1 to 4, wherein the rolling element is a cylindrical rotating body containing polytetrafluoroethylene (PTFE) or silicone.   6. The elevator according to claim 1, wherein a lip portion that extends at an acute angle along an outer surface of the rolling element is formed at an edge of the support body that exposes the rolling element. Guide device. The rolling element is a cylindrical rotating body,
The support has a two-part structure composed of a pressing part and a receiving part,
The elevator guide device according to any one of claims 1 to 6, wherein the rolling element is supported so as to be sandwiched between the pressing portion and the receiving portion. The rolling element is a cylindrical rotating body,
The elevator guide device according to any one of claims 1 to 6, wherein the rolling element is inserted into the support body from a rotational axis direction thereof. The said support body has a window which makes the said rolling element partly project on the rail opposing side, and is formed so that it can curve in the arc shape which makes the reverse side to the said rail opposing side curve inside. The elevator guide device according to any one of 1 to 6. The support body has a projecting piece that extends toward the rail and supports the rolling element from above or below,
The elevator guide device according to any one of claims 1 to 6, wherein a tip of the projecting piece is formed so as to be bent in a vertical direction. The support has a two-part structure composed of a pressing part and a receiving part,
The presser portion has a U-shape in plan view,
The elevator guide device according to any one of claims 1 to 6, wherein the receiving portion has a U-shape in a plan view and outside the pressing portion.

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