JP5823196B2 - Traction ability testing device - Google Patents

Description

  The present invention relates to a technique for providing a traction capability test apparatus for performing detailed measurement by changing conditions in a traction technique for safely driving an elevator.

  A conventional traction ability test apparatus 100 is shown in FIG. As shown in FIG. 4, one end of a rope 102 wound around a hoisting machine sheave (main sheave) 101 is fixed to a rope fixing portion 103, and the other end is attached with a weight 104 and suspended in a vertical direction. The rope 102 can move the fixing position on the rope fixing portion 103 side, and the winding angle formed by the rope 102 with respect to the hoisting machine sheave 101 can be changed stepwise (double arrows α, β). .

  A load detection device 105 such as a load cell is installed between the rope fixing portion 103 and the hoisting machine sheave 101 so that the rope tension can be measured. On the other hand, the rope tension on the side where the weight 104 is suspended is obvious without measurement. In the traction ability test, the hoisting machine sheave 101 is rotated, and the traction ability can be obtained from the ratio of the rope tensions of both the case where the rope 102 is slipped and the case where the rope 102 is not slipped.

  In the measurement method using the test device described above, the rope always contacts the hoisting machine sheave at the same part, but the contact part between the rope and the hoisting machine sheave in the elevator device varies depending on the lifting and lowering of the riding basket and the counterweight. To do. For this reason, there has been a drawback that the state of abrasion of the rope of the test apparatus is disadvantageous compared to the phenomenon in an actual elevator apparatus. Further, when simulating emergency braking, there is a drawback that the influence of inertial force generated in an actual elevator cannot be reproduced.

  An object of the present invention is to provide a traction ability test apparatus that realizes detailed setting of traction ability by realizing condition setting according to the actual driving situation of an elevator in view of the drawbacks of the conventional method described above.

  The elevator traction ability test apparatus according to the present embodiment includes a drive motor and a main sheave rotated by the drive motor, and a hoisting machine provided at the upper part of the hoistway and a rope wound around the main sheave. A first traveling body suspended from the rope, a second traveling body suspended from the main sheave on the opposite side of the first traveling body, and the first and first And a guide rail for guiding the raising and lowering of the second traveling body, and measuring a frictional force and a traction ratio generated at a contact portion between the main sheave and the rope. Further, in addition to the above-described configuration, a deflectable sheave having a position changeable between the main sheave and the first traveling body is provided, and a winding angle of the rope with respect to the main sheave can be changed.

  By comprising in this way, the frictional force and traction ratio which arise in the contact part of a rope and a main sheave can be measured on the conditions according to the driving condition of the actual elevator apparatus.

  The elevator traction capability testing apparatus according to the present embodiment is characterized in that the first and second traveling bodies have a frame portion on which a weight is loaded, and the weight can be changed. Specifically, like a counterweight used in, for example, an elevator apparatus, the traveling body has a frame structure, and the mass of the traveling body can be easily adjusted by loading the weight. By comprising in this way, it can measure by changing the tension | tensile_strength of the rope of two said traveling bodies, and can match | combine with the actual drive condition of an elevator apparatus.

  The elevator traction capability testing apparatus according to this embodiment is characterized in that a work table is provided at an intermediate position of the hoistway height. By comprising in this way, the weight from the said 1st and 2nd traveling body can be loaded and unloaded simultaneously, and the convenience of work improves.

  According to the present invention, it is possible to easily change the rope tension and the winding angle while reproducing the traction phenomenon according to the actual driving condition of the elevator, and to measure the traction ratio and the frictional force under detailed conditions. A traction ability test apparatus that can be realized can be provided.

It is a schematic block diagram which shows an example of the traction capability test apparatus of the elevator which concerns on this embodiment. It is a perspective view which shows the hoistway upper part in FIG. It is the schematic which shows the relationship between the main sheave and the baffle sheave of the traction capability test apparatus of the elevator which concerns on this embodiment. It is a schematic block diagram which shows the traction capability testing apparatus of the conventional elevator apparatus.

  Hereinafter, the traction ability test apparatus according to the present embodiment will be described in detail with reference to FIGS. 1 to 3. The embodiment described below is merely an example of the present invention, and the configuration of each part can be appropriately changed or modified within the scope of the present invention as long as the purpose of the present invention can be achieved. Of course.

  FIG. 1 is a perspective view of the overall configuration of the traction ability test apparatus according to the present embodiment, and FIG. 2 is a perspective view of a machine base 8 at the upper part of the hoistway in FIG. 3 shows a relationship diagram between the main sheave 91 and the deflecting sheaves 10a, 10b, and 14 as viewed from the direction A in FIG. In FIGS. 1 and 2, the rope 6 is not wound on the machine base 8.

  As shown in FIGS. 1 and 2, in the elevator traction ability test apparatus 1 according to the present embodiment, two pairs of guide rails 3a and 3b are provided in the hoistway 2, and the first and second traveling bodies are provided. 4a and 4b are moved up and down by being guided by guide rails 3a and 3b, respectively.

  The first traveling body 4a includes a frame portion 41a, a traveling body sheave 42a, and a guide portion 43a. The frame portion 41a has a structure similar to that of the counterweight of the elevator apparatus, so that the weight 5 can be taken in and out, and mass adjustment can be easily performed. The traveling body sheave 42a is provided on the upper portion of the frame portion 41a, the rope 6 is drawn around, and the traveling bodies 4a and 4b are suspended by 2: 1 roping. The guide portions 43a are provided on both side surfaces of the frame portion 41a and engage with the guide rails 3a. The traveling body 4a is equipped with sensors for measuring various situations under test, and information from the sensors can be collected via the tail cord 7a. The second traveling body 4b has the same configuration as the first traveling body 4a.

  On the other hand, at the upper part of the hoistway 2, a machine base 8 corresponding to a machine room in the elevator apparatus is provided. The hoisting machine 9, the traveling body deflecting sheave 10 (10 a, 10 b), the deflecting sheave part 11, and the load detecting device. 12 and a control device 13 for controlling the driving of the hoisting machine 9 is provided.

  The hoisting machine 9 has a main sheave 91 around which a rope 6 (not shown) is wound, and a drive motor 92 that drives the main sheave 91, and the main sheave 91 is driven to rotate through the rope 6. The traveling bodies 4a and 4b are moved up and down. The main sheave 91 can be easily attached and detached from the hoisting machine 9. For example, the test can be performed using sheaves having different diameters.

  The traveling body deflecting sheaves 10a and 10b are for guiding the rope 6 from the main sheave 91 so that the first and second traveling bodies 4a and 4b are vertically moved up and down. Is provided. The traveling body deflecting sheaves 10a and 10b can also be moved and fixed vertically. For example, when the traveling body deflecting sheaves 10a and 10b need to be repositioned by changing to a main sheave having a different diameter. The position is moved and fixed.

  The deflecting sheave portion 11 includes a deflecting sheave 14 and a sheave position adjusting portion 15. The deflecting sheave 14 is detachable from the sheave adjusting portion 15 and can be replaced with a sheave having a different diameter. The sheave position adjusting unit 15 includes an upright frame portion 151, a connecting portion 152 that connects the upright frame portions 151, and a sheave support portion 153 that rotatably supports the baffle sheave 14. The sheave support portion 153 can be moved and fixed in the vertical direction of the standing frame portion 151, and the winding angle of the rope 6 with respect to the main sheave 91 can be changed.

  The main sheave 91, the traveling body deflecting sheave 10 and the deflecting sheave portion 11 are installed such that their rotation axes are parallel and horizontal.

  The load detection device 12 measures rope tension (traction ratio), and is provided independently at both ends of the rope 6. The control device 13 is for controlling the hoisting machine 9 and the like, and is fixed to the wall portion of the machine base 8.

  One end of the rope 6 is fixed to the upper part of the hoistway, and the first traveling body sheave 42a, the traveling body deflecting sheave 10a, the main sheave 91, the deflecting sheave 14, the traveling body deflecting sheave 10b, and the second traveling body sheave 42b. The other end is fixed to the upper part of the hoistway 1 again. As a material, what is generally used for an elevator apparatus is used, but it may be replaced with a conventional rope such as a flat belt or a fiber material.

  In the traction capability testing apparatus 1 according to the present embodiment, a work table 16 is provided in the hoistway for the purpose of loading and unloading the weights 5 of the traveling bodies 4a and 4b. If the work table 16 is provided in the middle part of the hoistway 2, the worker X can simultaneously load and unload the weights 5 of the two traveling bodies 4a and 4b, and the convenience of work increases.

  In addition, as in the elevator apparatus, a safety device is provided with a buffer (buffer device) 17 at the lower part of the hoistway and a governor (speed governor) 18 at the upper part. Furthermore, safety links may be provided on the traveling bodies 4a and 4b.

  FIG. 3 shows a relationship diagram between the main sheave 91 and the deflecting sheaves 10a, 10b, and 14 as viewed from the direction A in FIG.

  As shown in FIG. 3, the traction ability testing apparatus 1 according to the present embodiment freely adjusts the winding angle (double arrow γ) of the rope 6 around the main sheave 91 by the deflecting sheave 14 that can move up and down (double arrow δ). Can be modified and tested. Further, as described above, the main sheave 91 can be easily detached from the drive motor 92, and the main sheave 91 can be changed to a main sheave having a different diameter, for example, a main sheave 91a having a small diameter, and a test can be performed. With the change to the main sheave 91a, the position of the traveling body deflecting sheave 10a can be changed, and the winding angle of the rope 6a with respect to the main sheave 91a can also be adjusted (double arrow ε).

  As described above, the traction capability testing apparatus 1 according to the present embodiment allows the traveling bodies 4a and 4b loaded with the weights 5 to move up and down (FIG. 1: arrows d1 and d2) along the guide rails 3a and 3b. 6 and the main sheave 91 can be changed in the same manner as in an actual elevator device, and at the same time, the winding angle and the main sheave diameter that greatly affect the traction ability can be freely changed. This makes it possible to set the conditions according to the actual driving conditions of the elevator system, which was not possible with the traction capability testing apparatus, and to measure the traction capability and the like in detail.

DESCRIPTION OF SYMBOLS 1,100 ... Traction test apparatus 2 ... Hoistway 3a, b ... Guide rail 4a, b ... Traveling body 5, 104 ... Weight 6 ... Rope 7 ... Tail cord 8 ... Machine stand 9 ... Hoisting machine 10a, b ... Traveling body Baffle sheave 11 ... Baffle sheave part 12, 105 ... Load detection device 13 ... Control device 14 ... Baffle sheave 15 ... Position adjustment part 16 ... Work table 17 ... Buffer (buffer device)
18 ... Governor (Governor)
41a, b ... Frame part 42a, b ... Traveling body sheave 43a, b ... Guide part 91 ... Main sheave 92 ... Drive motor 101 ... Hoisting machine sheave 102 ... Rope 103 ... Rope fixing part

Claims (4)

A hoisting machine having a driving motor and a main sheave rotated by the driving motor and provided at the upper part of the hoistway;
A rope wound around the main sheave;
A first traveling body having a frame portion on which a weight is loaded and suspended from the rope;
A second traveling body having a frame portion on which a weight is loaded, the rope being suspended on the opposite side of the main sheave from the first traveling body;
A guide rail for guiding the raising and lowering of the first and second traveling bodies,
An elevator traction capability testing apparatus that measures friction force and traction ratio generated at a contact portion between the main sheave and the rope.   A deflection sheave around which the rope is wound between the main sheave and the first traveling body, a position adjustment unit that rotatably supports the deflection sheave and allows position change; The elevator traction capability testing apparatus according to claim 1, wherein a winding angle of the rope with respect to the main sheave can be changed. The elevator traction capability testing apparatus according to claim 1 or 2 , wherein a work table is provided at an intermediate position of the hoistway height. The elevator traction capability testing device according to any one of claims 1 to 3 , wherein a load detection device is provided at both ends of the rope, and a rope tension acting on the main sheave is measured.

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