JP2014205549A - Oiling device and guide device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable application of a minimum amount of lubricant to a guide shoe by a simple structure while preventing generation of abnormal sound and abnormal vibration and fouling by splashed lubricant.SOLUTION: An oiling device for oiling the guide shoe 3 that slides on a guide rail 1 vertically erected in a place where a car and a balance weight 2 are disposed so as to be movable in a vertical direction, comprises: a contact surface pressure detection device 7 (contact surface pressure detection means) for detecting the contact surface pressure between the guide rail 1 and the guide shoe 3; and an oil application device 4, piping 5, an oil leading path 6, first to third openings 6a, 6b, 6c, and an oil application control device 8 which feed a minimum amount of lubricant to a contact surface to the guide rail 1 when the contact surface pressure detection device 7 detects that the contact surface pressure is higher than a preset threshold.

Description

  The present invention relates to an oiling device and an elevator guide device, and more specifically, an oiling device that is slidably guided by a guide rail installed in a vertical direction and lubricates an elevator guide shoe that moves up and down, and the oiling device. The present invention relates to an elevator guide device.

  In general, the elevator car and the counterweight are provided by a guide device 100 provided so as to sandwich the guide rail 1 erected in the vertical direction as shown in FIG. 1 in an embodiment of the present invention described later. It is arranged at two places above and below the counterweight 2. As a result, the guide device 100 is opposed to the guide surfaces 1a, 1b, 1c (corresponding to tooth surfaces described later) of the guide rail 2, and moves up and down in the hoistway so as to be sandwiched from both sides. At this time, in an inexpensive standard type elevator, the guide device 100 uses a groove-shaped member called a guide shoe 3 made of a resin such as urethane.

  The guide rail 3 is often made of steel. For this reason, when the guide shoe 3 slides with the guide rail 1 sandwiched therebetween, lubricating oil is applied to the guide rail 1 in order to reduce abnormal wear of the guide shoe 3 and prevent occurrence of abnormal noise and abnormal vibration. It is necessary to apply oil. In this specification, the term “sliding” means that the opposing surfaces or members move relative to each other so as to slide.

  However, periodic lubrication of the lubricating oil into the oiling device or scattering of the lubricating oil adhering to the guide rail 1 when the guide shoe 3 slides causes the hoistway or the car to become soiled by the lubricating oil. Is done. For this reason, conventionally, it has been necessary to clean the scattered lubricating oil.

  Therefore, in order to eliminate such cleaning of the scattered lubricating oil or to minimize it, for example, Japanese Patent Application Laid-Open No. 2011-230860 (Cited Document 1) has a guide for raising and lowering the elevator car or the counterweight. A guide rail lubrication device for an elevator that applies lubricant to the surface of the guide rail to be moved, and can be switched between contact and non-contact with the detection roller that rolls in contact with the surface of the guide rail. A movable refueling section, and detecting whether or not the guide rail needs to be refueled by rolling of the detection roller during the lifting and lowering operation of the elevator, and refueling based on the detection result. The invention is disclosed.

  And, with this configuration, the amount of oil supplied to the guide rail can be controlled appropriately to prevent excessive oil supply, reducing contamination due to oil, reducing oil consumption, and reducing maintenance work time for cleaning oil supply. Yes.

Japanese Patent Laying-Open No. 2011-230860 (paragraphs 11 to 13, FIG. 1)

  However, in the technique described in Patent Document 1, in addition to mechanical parts such as a control unit, a motor, a rack and pinion, and a detection roller as a driving device for bringing the oil supply unit into contact with the guide rail, the rolling speed of the detection roller Depending on the direction, a rotation detector such as an encoder for detecting the lubrication state of the guide rail surface, the traveling direction of the car and the position of the guide rail surface is required, which is expensive. In addition, maintenance of the drive device and the rotation detector is also required, and work is necessary in addition to the original refueling work.

  In addition, the oil supply section is composed of a bundle of fibers such as cotton, and because of the structure that sucks up the lubricant from the oil tank by capillary action, the amount of sucked up lubricant changes due to temperature changes in the hoistway, and the guide rail The amount of oil applied changed, and there was a risk of abnormal noise and abnormal vibration due to running out of lubricating oil.

  Furthermore, this known technology detects the transfer speed of the detection roller and supplies oil, but it monitors the state of the lubricating oil adhering to the surface of the guide rail, and there is insufficient lubricating oil on the surface of the guide rail. It is intended to refuel the parts that are running. For this reason, the entire surface of the guide rail must be filled with lubricating oil, and the amount of lubricating oil adhering to the entire guide rail is large. As a result, the lubricating oil adhering to the guide rail is scattered by sliding with the guide shoe, the hoistway and the car are fouled, and the scattered lubricating oil must be cleaned.

  In addition, abnormal noise and vibration caused by sliding between the guide shoe and the guide rail are largely due to the installation accuracy of the guide rail in addition to lack of lubricating oil, and local twist and inclination of the guide rail are also considered. Although it is necessary, in the said well-known technique, such a point is not considered in particular.

  Therefore, the problem to be solved by the present invention is to enable the application of a guide shoe of a very small amount of lubricating oil with a simple structure, and to prevent occurrence of abnormal noise and abnormal vibration and contamination due to scattered lubricating oil. .

  In order to solve the above-mentioned problems, the present invention provides an oiling device for lubricating a guide shoe that slides with a guide rail that is erected in a vertical direction and in which a car and a counterweight are movably arranged in the vertical direction. A contact surface pressure detecting means for detecting a contact surface pressure between the rail and the guide shoe; and when the contact surface pressure detecting means detects that the contact surface pressure is higher than a preset threshold, And a lubricating oil supply means for supplying a very small amount of lubricating oil to the contact surface. Note that problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

  According to the present invention, it is possible to apply oil to a guide shoe of a very small amount of lubricating oil with a simple structure, and it is possible to prevent occurrence of abnormal noise and abnormal vibration and contamination due to scattered lubricating oil.

It is a principal part side view of the guide apparatus which concerns on embodiment of this invention. It is a front view of the guide shoe in FIG. It is a top view of a guide device in case there is no twist in a guide rail. It is a top view of a guide apparatus in case a guide rail has a twist.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a side view of a main part of a guide device according to an embodiment of the present invention, FIG. 2 is a front view of a guide shoe in FIG. 1, FIG. 3 is a plan view of the guide device when the guide rail is not twisted, and FIG. It is a top view of a guide apparatus in case a guide rail has a twist. In FIG. 1 to FIG. 4, the same reference numerals are given to the same parts that can be regarded as the same or the same, and a duplicate description will be omitted as appropriate.

  In FIG. 1, a guide device 100 includes a guide rail 1, a guide shoe 3 installed on a counterweight 2, an oil application device 4, and an oil application control device 8.

  The guide rail 1 is erected in the vertical direction along the elevator shaft 50. Usually, two places are installed on the car side and two places on the counterweight 2 side, and a plurality of ones having a length of about several meters are connected depending on the height of the hoistway 50.

  The guide shoe 3 is fixed to the upper two places and the lower two places of the counterweight 2, and the first to third sliding surfaces 3a of the guide groove 31 in which the guide rail 1 is formed in the guide shoe 3 in a groove shape. , 3b, 3c with a predetermined interval. As a result, the guide shoe 3 slides with the guide rail 1 and guides the counterweight 2 along the guide rail 1.

  The oil coating device 4 is connected to the upper part of the guide shoe 3 by a pipe 5 such as a metal pipe or a rubber hose. The metal pipe or the pipe 5 is usually commercially available.

  In the up and down direction of the guide shoe 3, the first to third slides of the guide groove 31 of the guide shoe 3 are connected to the oil application device 4 by a metal pipe or a pipe 5, and the lubricating oil from the oil application device 4 is supplied to the guide shoe 3. An oil guide path 6 that leads to the moving surfaces 3a, 3b, and 3c is formed. Further, contact surface pressure detecting devices 7 for detecting contact surface pressure with the guide rail 1 are attached to the first and second sliding surfaces 3 a and 3 b sandwiching the guide rail 1 of the guide shoe 3. ing. The contact surface pressure detection device 7 is provided with an oil application control device 8 that detects a change in the contact surface pressure of the contact surface pressure detection device 7 and controls the operation of the oil application device 4. In the present embodiment, the oiling device according to the present invention is configured by the oiling device 4, the pipe 5, the oil guide path 6, and the oiling control device 8.

  2, the first sliding surface 3a is a sliding surface that slides with the first tooth surface 1a (visible surface: front side surface in FIG. 1) in the front-rear direction of the guide rail 1 in the state shown in FIG. is there. The second sliding surface 3b is a second tooth surface 1b in the front-rear direction of the guide rail 1 on the opposite side of the first sliding surface 3a (a surface on the opposite side to the visible surface in FIG. 1: a rear side surface). A sliding surface that slides. The third sliding surface 3 c is a sliding surface that slides with the end surface of the third tooth surface 1 c (the top surface of the guide rail 1 in FIG. 1) in the end surface direction of the guide rail 1.

  As shown in FIG. 2, the oil guide path 6 is provided at three locations, upper, middle, and lower, on each of the first sliding surface 3 a, the second sliding surface 3 b, and the third sliding surface 3 c. The first opening group 6a, the second opening group 6b, and the third opening group 6c that are opened are provided, and the lubricating oil guided from the pipe 5 and the oil guiding path 6 is supplied based on the control of the oil coating control device 8. The The oiling control device 8 controls, for example, the opening operation and opening time of a valve for oiling of the oiling device 4 (not shown).

  As described above, in the resin material of the guide shoe 3 used in the prior art, when the counterweight 2 is slidably guided along the guide rail 1, the generation of abnormal noise and vibration and the wear of the guide shoe 3 are reduced. In order to reduce it, it was necessary to always guide the lubricant while applying it to the guide rail 1. However, since the resin material of the guide shoe 3 according to the present embodiment uses, for example, nylon or a resin material containing nylon that is excellent in slidability, the guide shoe 3 can exhibit a guiding function even when no lubricating oil is supplied. Can do. A device using such a guide shoe is called a lubricant-less method.

  In such a guide device 100, as shown in FIG. 3, in a normal state, a biased load is applied due to the deviation of the center of gravity of the counterweight 2, and the guide shoe 3 has the first or second tooth surface 1 a, It slides in contact with one of the tooth surfaces of 1 b and is guided along the guide rail 1. In the example of FIG. 3, the guide shoe 3 slides while being in contact with the first tooth surface 1 a of the guide rail 1 </ b> L on the left side of the drawing and the second tooth surface 1 b of the guide rail 1 </ b> R on the right side of the drawing with the contact portion 9. The In this state, since the contact area is large and the contact surface pressure is small, if the resin material of the guide shoe 3 is made of nylon or the like having excellent slidability and high slidability, no lubricating oil is required. It can be used even in a state.

  On the other hand, centering is performed while paying close attention when constructing the guide rail, and the guide rail 1 may be twisted. The example shown in FIG. 4 is an example in which a twist is locally generated in the left guide rail 1L. When twisting occurs in this way, the contact area between the contact portion 10 of the guide rail 1 and the guide shoe 3 becomes extremely smaller than that of the contact portion 9 shown in FIG. As the contact area decreases, the contact surface pressure increases. When a certain contact surface pressure is exceeded, abnormal noise and abnormal vibration are generated, and wear of the guide shoe 3 is promoted. In FIG. 4, the position of the guide rail 1 </ b> L in FIG. 3 is represented by a two-dot chain line, and the state of both is shown in comparison.

  Therefore, in the present embodiment, in the guide device using the guide shoe 3 of the lubricating oil-less type that uses nylon having excellent slidability as the resin material of the guide shoe 3 and can be used even without the lubricating oil. In order to further improve the sliding performance and prevent abnormal noise and vibration, an extremely small amount of lubricating oil is supplied to the guide shoe 3 under specific conditions.

  That is, as a specific condition, a threshold is set for the contact surface pressure, and an extremely small amount of oil is supplied when the threshold is exceeded. For example, when the contact portion between the guide rail 1 and the guide shoe 3 becomes extremely small like the contact portion 10 due to local twisting or inclination of the guide rail 1, the contact surface pressure increases as described above. Therefore, the contact surface pressure is monitored by a contact surface pressure detecting device 7 installed on the guide shoe 3. In this monitoring process, the contact surface pressure becomes higher than in the case shown in FIG. 3, and when a certain contact surface pressure (threshold value) is detected, the oil application control device 8 lubricates the oil application device 4. Instruct.

  Specifically, when the contact surface pressure detection device 7 detects a certain contact surface pressure (threshold value), the oil application device 4 is operated by a control signal from the oil application control device 8, and the guide shoe is guided from the oil guide path 6. 3 is supplied with a very small amount of lubricating oil. At this time, the first to third aperture groups are provided so that the lubricant oil is evenly supplied to the first to third sliding surfaces 3a, 3b, 3c of the guide groove 31 of the guide shoe 3 in the front-rear direction and the end surface direction. Since 6a, 6b, 6c is provided, the inner surface of the guide groove 31 of the guide shoe 3 can be evenly supplied with oil from the opening groups 6a, 6b, 6c.

  Note that the oil amount of the extremely small amount of lubricating oil is a minimum oil amount that uniformly forms an oil film on each of the first to third sliding surfaces 3a, 3b, and 3c. In a small elevator apparatus having a height dimension of the guide shoe 3 of, for example, 120 to 130 mm, the amount of the lubricating oil supplied is about 10 to 20 cc, for example.

  The oiling control device 8 includes a CPU (not shown) as a central control device, and the CPU can control the amount of oiling and the oiling timing of the oiling device 4. The CPU includes a control unit and a calculation unit. The control unit controls the interpretation of instructions and the flow of program control, and the calculation unit executes calculations. The program is stored in a memory (not shown), an instruction to be executed (a certain numerical value or a sequence of numerical values) is taken out from the memory in which the program is placed, and the program is executed.

  As the contact surface pressure detecting means 7, a pressure sensor or a strain sensor can be used. Further, in the present embodiment, the guide device 100 provided in the counterweight has been described as an example, but the same configuration can be made with a car.

  As described above, according to the present embodiment, the following effects can be obtained. In the following description of the effects in the embodiment, each component in the present embodiment is indicated by parentheses in each claim or attached with a reference symbol to clarify the correspondence between the two.

1) In an oiling device in which a car and a counterweight 2 are arranged so as to be movable in the vertical direction and lubricate a guide shoe 3 that slides vertically and a guide shoe 3 that slides vertically, the guide rail 1 and the guide shoe A contact surface pressure detecting device 7 (contact surface pressure detecting means) for detecting a contact surface pressure of 3 and the contact surface pressure detecting device 7 detects that the contact surface pressure is higher than a preset threshold value. When the first to third sliding surfaces 3a, 3b, 3c (contact surfaces) in contact with the guide rail 1 are supplied, an oil coating device 4, a pipe 5, an oil guide path 6, a first The first to third opening groups 6a, 6b, 6c and the oil application control device 8 (lubricating oil supply means) are provided.

  In this embodiment configured as described above, a very small amount of lubricating oil is supplied to the contact surface with the guide rail 1 when the contact surface pressure becomes higher than a preset threshold value. The structure can suppress the generation of abnormal noise and abnormal vibration. Furthermore, since the amount of the lubricating oil is extremely small, it is possible to prevent the hoistway 50 and the car from being damaged due to the scattering of the lubricating oil.

2) Since the guide shoe is a resin material having excellent slidability, for example, the resin material having excellent slidability contains nylon as a resin material, in addition to being able to be used even without a lubricating oil, By applying oil to the guide shoe only when necessary in response to an increase in the contact surface pressure of the guide shoe due to a local twist or inclination of the guide rail, the effect 1) can be obtained.

3) The first to third sliding surfaces 3a, 3b, 3c of a cross-sectional groove type including the guide shoe 3 including two surfaces facing the thickness direction of the guide rail 1 and one surface facing the end surface; 1st thru | or 3rd opening group 6a, 6b, 6c (opened to the said 1st thru | or 3rd sliding surfaces 3a, 3b, 3c (
A plurality of openings), and an oil guide path 6 for guiding the lubricating oil supplied from the oil coating device 4 (lubricating oil supply means) to the first to third opening groups 6a, 6b, 6c (openings). Therefore, the lubricating oil can be supplied to the first to third sliding surfaces 3a, 3b and 3c to form a uniform oil film.

4) Since the oil amount of the extremely small amount of lubricating oil is set to the minimum amount that allows an oil film to be uniformly formed on the first to third sliding surfaces 3a, 3b, 3c, the first The third sliding surfaces 3a, 3b, and 3c are formed with an oil film having a minimum thickness sufficient for lubrication, so that the hoistway 50 and the car can be prevented from being damaged due to the scattering of the lubricating oil without impairing the lubricity. Can be prevented.

5) The contact surface pressure is higher than a preset threshold value when the guide rail is locally or twisted or tilted, and lubrication is performed only in that case, so there is no lubricant when the contact surface pressure is small. Only when the contact pressure is high, the oil is lubricated. For this reason, oiling is not performed unnecessarily, and it is possible to prevent the hoistway 50 and the car from being damaged due to the scattering of lubricating oil.

6) In the elevator guide device 100 according to the present embodiment, since the lubricating device is provided for each of the car and the counterweight, the effects shown in the above 1) to 5) can be achieved on either side. .

DESCRIPTION OF SYMBOLS 1 Guide rail 2 Counterweight 3 Guide shoe 3a 1st sliding surface 3b 2nd sliding surface 3c 3rd sliding surface 4 Lubricating device 5 Piping 6 Oil guide path 6a 1st opening group 6b 2nd Opening group 6c Third opening group 7 Contact surface pressure detecting device 8 Oiling control device 100 Guide device

Claims (7)

In an oiling device in which a car and a counterweight are arranged so as to be movable in the vertical direction, and lubricate a guide shoe that slides vertically with a guide rail,
Contact surface pressure detecting means for detecting a contact surface pressure between the guide rail and the guide shoe;
When the contact surface pressure detection means detects that the contact surface pressure is higher than a preset threshold value, a lubricant supply means for supplying a very small amount of lubricant to the contact surface with the guide rail;
An oiling device comprising: The oiling device according to claim 1,
An oiling apparatus, wherein the guide shoe is formed of a resin material having excellent slidability. The oiling device according to claim 2,
An oiling apparatus, wherein the resin material having excellent slidability includes nylon as a resin material. The oiling device according to any one of claims 1 to 3,
The guide shoe is
First to third sliding surfaces of a cross-sectional groove type including two surfaces facing the thickness direction of the guide rail and one surface facing the end surface;
A plurality of openings opened in the first to third sliding surfaces;
An oil guide path for guiding the lubricating oil supplied from the lubricating oil supply means to the opening;
An oiling device comprising: The oiling device according to claim 4,
The oil supply device according to claim 1, wherein an oil amount of the extremely small amount of lubricating oil is set to a minimum amount so that an oil film is uniformly formed on the first to third sliding surfaces. The oiling device according to any one of claims 1 to 5,
The lubrication device according to claim 1, wherein the contact surface pressure is higher than a preset threshold value when the guide rail is locally or twisted or inclined.   An elevator guide device comprising the lubricating device according to any one of claims 1 to 5 for each of a car and a counterweight.

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