JP2008230792A - Tension sheave device of governor rope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tension sheave device of a governor rope which is smoothly and vertically moved following the expansion of the governor rope and capable of considerably enhancing the maintainability. <P>SOLUTION: The tension sheave device of the governor rope comprises a tension sheave 2 with a fold-back part of a lower end of the governor rope 1 being wound therearound, a tension sheave weight 3 for providing the predetermined tension to the governor rope 1 via the tension sheave 2, a movable supporting part 7 which is vertically movable along the longitudinal direction of a guide rail 6 erected in an elevator hoistway, and an arm 8 connected between the tension sheave 2 and the movable supporting part 7. The movable supporting part 7 has a rotating body which is rolled on a front side, a back side and both end faces of a flange part of the guide rail 6. The vertical movement of the tension sheave 2 is guided to restrict the movement in the horizontal direction in a predetermined range. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tensioning wheel device that applies a predetermined tension to a governor rope of an elevator.

  The elevator is equipped with a speed governor that constantly monitors the speed of a car that moves up and down in the hoistway and that makes an emergency stop when the car is in a predetermined overspeed state. In general, this speed governor detects the speed of movement of the speed governor rope linked to the car from the speed of the sheave on which the speed governor rope is wound, and the speed of the sheave reaches a predetermined value. It is configured so that the car is brought to an emergency stop.

  In order to operate the governor in this manner, it is necessary to reliably transmit the movement of the governor rope to the sheave. The governor rope tensioner device is provided for this purpose, and by applying a predetermined tension to the governor rope, the necessary friction between the governor rope and the sheave is obtained. It has the function of generating force and interlocking the sheave with the movement of the governor rope.

  FIG. 4 is a front view showing a conventional governor rope tensioner device. In FIG. 4, 1 is an endless governor rope, 2 is a tension wheel around which the folded portion at the lower end of the governor rope 1 is wound, and 3 is a predetermined tension applied to the speed governor rope 1 via the tension wheel 2. A tensioning wheel weight 4 for preventing the speed governor rope 1 from coming off from a rope groove of the tensioning wheel 2 is provided.

  Here, the length of the governor rope 1 changes as the temperature and humidity in the hoistway fluctuate. The speed governor rope 1 is wound around a sheave (not shown) of a speed governor fixed at the top of the hoistway, etc., so that the upper end folded portion is adjusted by a temperature change in the hoistway. When the speed rope 1 expands and contracts, the tension wheel 2 and the tension wheel weight 3 move up and down in accordance with the expansion and contraction of the speed governor rope 1. Therefore, conventionally, when fixing the tension wheel 2 and the tension wheel weight 3 to the mounting plate 19 provided on the guide rail 6, for example, each end of the arm 20 is connected to the shaft 5 and the mounting plate 19 of the tension wheel 2. By fixing each of the governor ropes 1 so as to be rotatable in both directions, it was made possible to cope with the vertical movement of the tension wheel 2 and the like caused by the expansion and contraction of the governor rope 1.

  In addition, as a prior art of the governor rope tensioner device, a slider is fixed to a mounting plate fixed to the end of the arm so that the slider can be slid vertically with respect to the guide rail. By configuring, it has been proposed to support the up and down movement of the tension wheel caused by the expansion and contraction of the governor rope while maintaining the positional relationship of the tension wheel, the tension wheel weight, the arm, and the mounting plate. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 9-40323

  In the conventional governor rope tensioner device shown in FIG. 4, for example, when the governor rope 1 is extended due to a temperature change or the like and the tensioner 2 is moved downward as shown in FIG. There is a problem in that the governor rope 1 comes into contact with the equipment in the hoistway because the tension wheel 2 or the like moves in the direction approaching the guide rail 6, that is, in the horizontal direction. In addition, when the governor rope 1 is greatly expanded and contracted and the inclination of the arm 20 is increased, the stopper 4 may come into contact with the governor rope 1. Therefore, in order not to cause the above problem, it is necessary to frequently adjust the governor rope 1 and there is a problem that the maintainability is poor.

  Moreover, in the thing of patent document 1, since it can be made to respond | correspond to expansion / contraction of a governor rope, maintaining the positional relationship of a tension wheel, an arm, etc., the above problems do not arise. However, since the moving direction of the tension wheel 2 or the like is guided by the slider fixed to the mounting plate, when foreign matter is caught between the slider and the guide rail, There was a problem that the movement was hindered and it was impossible to cope with the expansion and contraction of the governor rope.

  In particular, when the elevator rails and counterweights are also guided in the up-and-down direction by the guide rails, lubricating oil is often supplied to the guide rails in order to smoothly perform the up-and-down operations of the cars and the counterweights. In such a case, since the lubricating oil moves downward along the guide rail, the lubricating oil adheres to a portion that guides the moving direction of the tension wheel or the like, that is, the sliding range of the slider. Further, the place where the tension wheel or the like is arranged is generally a place near the pit portion or the bottom surface of the hoistway, and there are a lot of dust and debris. Therefore, there is a high possibility that dust and dust will adhere to the guide rail and the slider, and the vertical movement of the tension wheel 2 and the like may be hindered, causing the speed governor to malfunction.

  The present invention has been made to solve the above-described problems, and its purpose is to smoothly move up and down following the expansion and contraction of the governor rope, and to greatly improve maintainability. It is an object of the present invention to provide a tensioner rope tensioner device that can be controlled.

  The governor rope tensioner device according to the present invention includes a tensioner on which a folded portion at the lower end of the elevator governor rope is wound, and a tensioner that applies a predetermined tension to the governor rope via the tensioner. A vehicle weight, a movement support part movable up and down along the length of the guide rail standing in the elevator hoistway, and an arm connected between the tensioning wheel and the movement support part The support portion has a rotating body that rolls on the front surface, the back surface, and both end surfaces of the flange portion of the guide rail. The rotating body guides the up and down movement of the tensioning wheel, and the horizontal movement is predetermined. It is restricted within the range.

  According to the tensioner rope tensioning apparatus according to the present invention, the governor rope can be smoothly moved up and down following expansion and contraction of the governor rope, and maintainability can be greatly improved.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a front view showing a governor rope tensioner device according to Embodiment 1 of the present invention, and FIG. 2 is a main part front view showing the governor rope tensioner device according to Embodiment 1 of the present invention. 3 is an AA arrow view of the governor rope tensioner device shown in FIG.

  1 to 3, reference numeral 1 denotes an endless governor rope arranged over the hoistway, and the folded portion at the upper end is wound around a sheave (not shown) of the governor. ing. The speed governor is disposed in the machine room above the hoistway and the top of the hoistway, and is firmly fixed so as not to move up and down. 2 is a tension wheel around which the folded portion at the lower end of the governor rope 1 is wound, 3 is a tension wheel weight for applying a predetermined tension to the speed governor rope 1 via the tension wheel 2, and 4 is a governor rope 1 Is a detachment stopper that prevents the detachment from coming out of the ropeway of the tension wheel 2. The tension vehicle weight 3 is provided in a state of being suspended from the shaft 5 of the tension wheel 2, for example.

  Reference numeral 6 denotes a guide rail installed upright in the hoistway. This guide rail 6 may guide any elevator direction of an elevator car or a counterweight (both not shown). 7 is a moving support portion configured to be movable in the vertical direction along the length of the guide rail 6, 8 is provided on the moving support portion 7 with one end portion by a bolt 9, and the other end portion is provided on the shaft 5 or the tension wheel weight 3. Arm. That is, the tension wheel 2 is configured so that the movement support portion 7 connected by the arm 8 is restricted to move in the horizontal direction within a predetermined range and can move only in the vertical direction. Yes. Further, the arm 8 is horizontally arranged so that the movement support portion 7 and the tensioning wheel 2 have substantially the same height.

  The guide rail 6 generally has a substantially T-shaped cross section. For example, a plate-like flange portion 6a that is fixed to a fixed body of a hoistway via a bracket (not shown) or the like, and a flange portion 6a is provided with a guide portion 6b provided so as to protrude vertically from the central portion of one side surface of 6a. In addition, the guide rail 6 guides the raising / lowering direction of a cage | basket | car or a counterweight by the said guide part 6b.

  Further, the moving support portion 7 has a base portion having a substantially square ring shape having an opening in a part in plan view. And it arrange | positions so that the flange part 6a of the guide rail 6 may pass the inner side of the said base part, ie, the said base part may surround the circumference | surroundings of the flange part 6a, and the guide part 6b is the said opening. It arrange | positions so that it may protrude outside from the movement support part 7. Further, the movement support portion 7 restrains the movement of the tensioning wheel 2 connected by the arm 8 in the horizontal direction within a predetermined range, and the vertical movement of the tensioning wheel 2 caused by the expansion and contraction of the governor rope 1. In order to be able to guide, a plurality of guide means including a rotating body that rolls on the front surface, the back surface, and both end surfaces of the flange portion 6a of the guide rail 6 are provided.

  Here, the front surface of the flange portion 6a refers to a surface provided so that the guide portion 6b protrudes among the side surfaces of the flange portion 6a having a plate shape, and the back surface of the flange portion 6a. Of the side surface of the flange portion 6a, the surface provided on the opposite side of the front surface, the end surface of the flange portion 6a is the width provided between the front surface and the back surface of the side surface of the flange portion 6a. The narrow side of The guide means only needs to have the above-described function when a rotating body such as a sphere or a cylinder rolls on the side surfaces of the front surface, the back surface, and both end surfaces of the flange portion 6a. Composed.

  Specifically, the moving support portion 7 includes, for example, support plates 10 to 12 made of the base portion and rollers 13 to 18 made of the guide means. The support plate 10 is a U-shaped plate member, and the support plates 11 and 12 are L-shaped plate members. Then, the support plates 11 and 12 are fastened and fixed to each end portion of the support plate 10 with bolts 19 so as to close and leave a part of the opening of the support plate 10, and as a whole, partially in plan view Is formed in a substantially square ring shape having an opening. The opening is formed by a gap formed between the distal end portion of the support plate 11 and the distal end portion of the support plate 12.

  The support plates 10 to 12 are supported by attaching the support plates 11 and 12 so that the guide portion 6b is disposed between the tip portions in a state where the flange portion 6a is disposed in the U-shaped portion of the support plate 10. The inner surface of the plate 10 faces the back surface and both end surfaces of the flange portion 6a, and the inner surfaces of the support plates 11 and 12 face the front surface of the flange portion 6a. The inner surface of the support plate 11 is the front surface of the flange portion 6a formed on one side of the guide portion 6b, and the inner surface of the support plate 12 is the front surface of the flange portion 6a formed on the other side of the guide portion 6b. Respectively.

  The rollers 13 and 14 are provided on the inner surface facing the back surface of the flange portion 6a of the support plate 10, and are disposed with a very slight gap with respect to the back surface of the flange portion 6a. That is, the rotating bodies of the rollers 13 and 14 roll on the back surface of the flange portion 6a. In order to correspond to the rear surface of the wide flange portion 6a, the roller 13 is disposed on one side of the flange portion 6a, and the roller 14 is disposed on the other side of the flange portion 6a. Further, the roller 15 is provided on the inner surface facing one end surface of the flange portion 6a of the support plate 10, and the roller 16 is provided on the inner surface facing the other end surface of the flange portion 6a of the support plate 10, respectively. It arrange | positions with a very slight gap | interval with respect to the end surface of the opposing flange part 6a. That is, the rotating body of the roller 15 rolls on one end face of the flange portion 6a, and the rotating body of the roller 16 rolls on the other end face of the flange portion 6a.

  The roller 17 is provided on the inner surface of the support plate 11 facing the front surface of the flange portion 6a, and the roller 18 is provided on the inner surface of the support plate 12 facing the front surface of the flange portion 6a. It is arranged with a very small gap with respect to the front surface of the. That is, the rotating bodies of the rollers 17 and 18 roll on the front surface of the flange portion 6a.

  As shown in FIG. 3, the guide rail 6 is formed so that the front surface of the flange portion 6a moves away from the back surface toward the guide portion 6b, that is, is inclined with respect to the back surface, and the center portion of the flange portion 6a. There is one in which a predetermined strength is ensured by increasing the thickness. Generally, the back surface of the flange portion 6a is flat for mounting, and is formed horizontally or vertically with respect to the guide surface of the guide portion 6b. Therefore, in the guide rail 6 having the above-described configuration, the front surface of the flange portion 6a is It is formed obliquely with respect to the guide surface of the guide portion 6b. In such a guide rail 6, the rollers 17 and 18 are arranged in accordance with the inclination of the front surface of the flange portion 6a. For example, the rotation axis of the cylindrical body is parallel to the front surface of the opposing flange portion 6a. Be placed.

  In the governor rope tensioner device having the above-described configuration, when the temperature changer, the humidity change, and the like occur in the hoistway and the governor rope 1 expands and contracts, the tensioner wheel 2 and the tensioner weight 3 are moved to the moving support portion 7. With this guidance, the horizontal displacement moves in a state where the displacement in the horizontal direction is constrained within a predetermined range. In addition, since the arm 8 is firmly fixed to the movement support portion 7 and the shaft 5, the arm 8 is in a horizontal state when the tension wheel 2 or the like moves up and down by the expansion and contraction of the governor rope 1. Move up and down while holding. That is, when the tension wheel 2 or the like moves up and down, the arm 8 does not rotate with its end portion as a fulcrum. Therefore, even if the governor rope 1 expands and contracts for some reason, the governor rope 1 is displaced in the horizontal direction and interferes with the equipment in the hoistway as in the conventional case, or the stopper 4 is provided with the governor. There is no problem of contact with the rope 1.

  Further, the moving support portion 7 is configured so that the inner rotating body rolls on the front surface, the rear surface, and both end surfaces of the flange portion 6 a of the guide rail 6, thereby changing the moving direction of the tension wheel 2 and the tension vehicle weight 3. Are guided in the longitudinal direction, that is, in the vertical direction. For this reason, even if dust or dust is attached to the guide rail 6, the operation of the movement support portion 7 is not hindered, and the tension wheel 2 reliably follows the expansion and contraction of the governor rope 1. It becomes possible to make it. Further, since the movement of the movement support portion 7 is guided by the rolling of the internal rotating body, the tension wheel 2 and the tension wheel weight 3 are cantilevered by the arm 8 as shown in FIGS. Even in this case, smooth operation is possible. For this reason, it can be installed in a narrow space in the hoistway, and it is possible to easily cope with space saving of the hoistway and layout change.

  According to Embodiment 1 of the present invention, the tension of the governor rope 1 can be smoothly moved up and down following the expansion and contraction of the governor rope 1, and the maintainability can be greatly improved. A vehicle device can be obtained. For this reason, it is a particularly effective means for an elevator with a high head (for example, 30 m or more) or a high speed (for example, 90 m / min or more) elevator with a large expansion / contraction of the governor rope 1.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a governor rope tensioner device according to a first embodiment of the present invention. It is a principal part front view which shows the tensioner apparatus of the governor rope in Embodiment 1 of this invention. It is an AA arrow directional view of the tensioner rope tensioner device shown in FIG. It is a front view which shows the tension vehicle apparatus of the conventional governor rope. It is a figure for demonstrating operation | movement of the tensioner apparatus of the conventional governor rope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Speed governor rope 2 Tension wheel 3 Tension wheel weight 4 Detachment prevention 5 Axis 6 Guide rail 6a Flange part 6b Guide part 7 Movement support part 8,20 Arm 9,19 Bolt 10,11,12 Support plate 13,14,15 , 16, 17, 18 Roller 19 Mounting plate

Claims (4)

A tension wheel around which the folded portion at the lower end of the governor rope of the elevator is wound;
A tensioning wheel weight for applying a predetermined tension to the governor rope via the tensioning wheel;
A movable support portion that is movable in the vertical direction along the length of the guide rail that is erected in the elevator hoistway;
An arm connected between the tension wheel and the movement support;
With
The moving support portion includes a rotating body that rolls on the front surface, the back surface, and both end surfaces of the flange portion of the guide rail, and guides the up and down movement of the tensioning wheel by the rotating body, so that the horizontal direction A tensioner rope tensioning device characterized by restraining movement to a predetermined range.   2. The governor rope tensioner device according to claim 1, wherein the guide rail guides an elevating direction of one of the elevator car and the counterweight. 3. The moving support part
First guide means having a rotating body that rolls on the back surface of the flange portion of the guide rail;
Second guide means having a rotating body that rolls on one end face of the flange portion;
Third guide means having a rotating body that rolls on the other end face of the flange portion;
A fourth guide means having a rotating body that rolls on the front surface of the flange portion;
The tensioner rope tensioner device according to claim 1 or 2, characterized by comprising: The guide rail is formed so that the front surface of the flange portion is inclined with respect to the back surface.
4. The governor rope tensioner according to claim 3, wherein the rotating body of the fourth guide means has a rotating shaft arranged in parallel to the front surface of the flange portion.

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