JP2016179874A - Rope groove measurement device and measurement method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope groove measurement device that measures remaining amounts of a rope groove of a sheave around which is wound a rope, which can perform work for measuring the rope groove easily in short time.SOLUTION: A rope groove measurement device 40 is configured to comprise a measuring pin 22 and a gauging pin 41 fixed to the measuring pin 22 and a gauge 20 which measures movement amounts of the gauging pin 41. Furthermore, in the device, a bolt 43 through which is penetrated the gauging pin 41 is fixed to the gauge 20, and is provided a holding member 51 which is screwed to the bolt 43 and holds a spherical member 52 having an approximately same diameter as a rope diameter at an arbitrary position along a moving direction of the measurement pin 41. Then the spherical member 52 is pressed against a rope groove 2, the measuring pin 22 is pressed into until the gauging pin 41 contacts a bottom face 4 of the rope groove 2, and measurement amounts by the gauge 20 is read out at the time of the pressing, so as to measure remaining amounts of the rope grove.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus and a method for measuring a remaining amount of a rope groove of a sheave used for driving a rope such as an elevator.

In general, an elevator is configured such that a rope is wound around a rope groove of a sheave, a car is suspended on one side of the rope, a counterweight is suspended on the other side, and the car is moved up and down by rotating the sheave with a driving device. Has been. And transmission of the driving force from a sheave to a rope is performed by the frictional force by the wedge action to the rope groove and rope of a sheave. Therefore, when the rope is driven repeatedly, the rope groove gradually wears, and when the rope groove wear proceeds by a certain amount, the frictional force decreases and slip occurs between the rope groove and the rope, and the rope has a required amount. The driving force is not transmitted.
Therefore, it is necessary to periodically measure the wear amount of the rope groove and the remaining amount of the rope groove. In addition, since the measurement result is used as a judgment material for the replacement timing of the sheave, an apparatus and a method that can easily and accurately measure are required.

This will be described with reference to the drawings. FIG. 7 is a cross-sectional view of the rope groove portion, wherein 1 is a rope, 2 is a rope groove formed in the sheave 3, and is composed of a round groove 2a and an undercut 2b formed at the lower end thereof. 4 is the bottom surface of the rope groove 2, and d is the remaining amount of the rope groove which is the distance between the lower end of the rope 1 and the bottom surface 4. When this distance d becomes 0, the frictional force decreases, and the rope groove 2 and the rope 1 Slip easily occurs between the two. Therefore, this distance d is measured periodically to determine the replacement time of the sheave 3.
Further, an undercut may be formed in the V groove instead of the round groove 2a, or the V groove may be simply formed, but the distance d needs to be measured as described above.

As this rope groove measuring apparatus and method, there is one provided with a spherical member having a diameter substantially the same as the rope diameter and a rod-like member configured to be slidable through the center of the spherical member (for example, Patent Document 1). reference).
This apparatus will be described with reference to the drawings.

  FIG. 8 is a diagram showing the entire configuration of the rope groove measuring apparatus 10, and 11 is a spherical member having a diameter substantially the same as the nominal diameter of the rope to be measured, and is made of a material that does not easily deform, such as wood, plastic, or glass. Yes. Reference numeral 12 denotes a rod-like member that passes through the center of the spherical member 11 and is slidable. In this example, an elongated nail is used. Reference numeral 12 a denotes a head of the nail 12, which plays a role of preventing the spherical member 11 from falling off the nail 12. Reference numeral 13 denotes a holding member for holding the spherical member 11 at an arbitrary position so as not to easily deviate from the position. For example, the spherical member 11 is made of a rubber tube whose inner diameter is slightly smaller than the outer diameter of the nail 2.

  Reference numeral 14 denotes a resin umbrella washer attached to an umbrella nail for fixing the corrugated plate, in order to facilitate operation when the spherical member 11 and the holding member 13 are shifted to a predetermined position at the time of fixing (particularly the holding member). 13 is small). Reference numeral 15 denotes a handle attached so as to cover the tip of the nail 12 for facilitating the operation like a driver's handle, and the material and size are appropriately selected so as to be familiar with the hand.

FIGS. 9-11 is a figure explaining the procedure which performs a measurement of a rope groove using the rope groove measuring apparatus 10 of FIG.
First, as shown in FIG. 9, by moving the umbrella washer 14 with a finger, the holding member 13 and the spherical member 11 are simultaneously shifted to the tip of the nail 12 on the head 12a side. The spherical member 11 is pressed against the rope groove 2 to be measured toward the center of the car 3. As a matter of course, the spherical member 11 is pressed against a portion of the rope groove 2 where the rope 1 is not hung.

Next, as shown in FIG. 10, the handle 15 (that is, the nail 12) is pushed toward the center of the sheave 3 until the head 12 a of the nail 12 reaches the bottom surface 4 of the rope groove 2.
When the head 12a of the nail 12 reaches the bottom surface 4 of the rope groove 2, the rope groove measuring device 10 is removed from the rope groove 2 so that the head 12a of the nail 12 faces upward as shown in FIG. To do. At this time, the holding member 13 holds the position of the spherical member 11 in FIG. 10 as it is. When the dimension d of the nail 12 protruding from the spherical member 11 is measured with the straight scale 16, the measured value is from the lower end of the spherical member 11 shown in FIG. 10 (ie, the lower end of the rope 1) to the bottom surface 4 of the rope groove 2. This corresponds to the distance d.

  As described above, the conventional rope groove measuring device is a small and light device and can measure the remaining amount of the rope groove by a simple operation.

JP 2010-18386 A

In the conventional technique, the distance d from the lower end of the spherical member 11 to the bottom surface 4 of the rope groove 2 is measured by the rope groove measuring device 10, and then the dimension d of the nail 12 protruding from the spherical member 11 is set to the straight scale 16. There is a problem that it takes time to perform the measurement.
The present invention aims to solve the above-described problems.

  The present invention relates to a rope groove measuring device for measuring a remaining amount of a rope groove of a sheave, a spherical member having a diameter substantially the same as a rope diameter, a rod-shaped member penetrating through the center of the spherical member, and the rod-shaped member A measuring instrument that measures the amount of movement in conjunction with the movement; and a holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member with respect to the measuring instrument. To do.

  According to the present invention, the measuring instrument is a dial-type gauge, and the rod-shaped member is a measuring pin and a measuring pin provided on the dial-type gauge.

  Furthermore, the present invention is configured such that the holding member holds the spherical member at an arbitrary position along the moving direction of the measuring pin with respect to the dial type gauge, and further holds the position of the holding member. A locking member is provided.

  Furthermore, in the present invention, a hollow bolt through which the rod-shaped member passes is fixed to the measuring instrument, the holding member is a nut shape screwed into the bolt, and the spherical member is the holding member. It is fixed to the member.

  The present invention also includes a spherical member having a diameter substantially the same as the rope diameter, a rod-shaped member that penetrates the center of the spherical member, a measuring instrument that measures the amount of movement in conjunction with the movement of the rod-shaped member, In the measuring method of the rope groove using the rope groove measuring device provided with a holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member with respect to the measuring instrument, the measuring instrument is a reference position The rope groove measuring device is adjusted by adjusting the position of the rod-shaped member so that the tip of the spherical member is aligned with the tip of the adjusted rod-shaped member.

  Furthermore, the present invention provides a spherical member having a diameter substantially the same as the rope diameter, a rod-shaped member that penetrates the center of the spherical member, a measuring instrument that measures the amount of movement in conjunction with the movement of the rod-shaped member, In a rope groove measuring method using a rope groove measuring device provided with a holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member with respect to a measuring instrument, the spherical member is a rope groove. The distance from the lower surface of the rope to the bottom surface of the rope groove is measured by pressing the rod-shaped member until it hits the bottom surface of the rope groove and reading the measurement value of the measuring device at that time. Is.

  According to the present invention, it is possible to shorten the work time required for rope groove measurement than before.

It is a figure showing the whole rope groove measuring device composition by an embodiment of the invention. It is explanatory drawing which decomposed | disassembled some rope groove measuring apparatuses by embodiment of this invention. It is explanatory drawing of the gauge of the rope groove measuring apparatus by embodiment of this invention. It is a figure explaining the procedure which measures a rope groove using the rope groove measuring apparatus by embodiment of this invention. It is a figure explaining the procedure which measures a rope groove using the rope groove measuring apparatus by embodiment of this invention. FIG. 5 is a detailed view around the spherical member and rope groove of FIG. 4. It is sectional drawing of a rope groove part. It is a figure which shows the whole structure of the conventional rope groove measuring apparatus. It is a figure explaining the procedure which performs a measurement of a rope groove using the rope groove measuring apparatus of FIG. It is a figure explaining the procedure which performs a measurement of a rope groove using the rope groove measuring apparatus of FIG. It is a figure explaining the procedure which performs a measurement of a rope groove using the rope groove measuring apparatus of FIG.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a rope groove measuring device, a diagram corresponding to FIG. 8, FIG. 2 is an exploded view of a portion of the rope groove measuring device of the present embodiment, and FIG. It is explanatory drawing of the gauge of the rope groove measuring apparatus of a form.

  In the figure, reference numeral 20 denotes a dial type gauge, which is generally marketed for measuring tire grooves (for example, “No. 1225 dial type tire groove gauge” by Ohashi Sangyo).

  As shown in FIG. 3, when the lower surface 21 of the gauge 20 is brought into contact with the tread surface 31 of the tire 30 and the measurement pin 22 is pushed downward until it contacts the bottom surface 33 of the tire groove 32, the scale indicated by the pointer 23 is obtained. The remaining amount of the tire groove 32 is obtained. The pointer 23 maintains its position even when the gauge 20 is removed from the tire 30. Therefore, when the measurement site is dark and the scale of the pointer 23 is difficult to see, it can be reviewed in a bright place. When the measurement is completed, the measuring pin 22 is returned so that the pointer 23 points to zero.

The rope groove measuring device of the present embodiment is a device suitable for measuring the rope groove of a sheave by applying the gauge 20 described above.
1 and 2, reference numeral 41 is a measurement pin fixed to the lower end of the measurement pin 22, 42 is a nut fixed to the lower surface 21 of the gauge 20, 43 is a bolt fixed to the nut 42, and 44 is fixed to the bolt 43. This is a stopper that limits the amount of movement of a lock nut, which will be described later. Further, a hole (not shown) through which the measurement pin 41 passes is formed in the nut 42 to the stopper 44.

A lock nut 50 is screwed onto the bolt 43 as shown in FIG. A nut-shaped holding member 51 is screwed into the bolt 43, and a spherical member 52 is fixed to the tip thereof. The spherical member 52 has a through hole in the center through which the measurement pin 41 can pass.
In the rope groove measuring device 40, as shown in FIG. 1, the lock nut 50 and the holding member 51 are screwed into the bolt 43, and the spherical member 52 is held in a state in which the measuring pin 41 penetrates.

Next, the operation of the present embodiment will be described.
First, before the measurement, the pointer 23 is adjusted so that the pointer 23 indicates 0 when the lower end of the measuring pin 41 coincides with the lower end of the spherical member 52.
In this adjustment, first, the measuring pin 22 and the measuring pin 41 fixed to the measuring pin 22 are adjusted so that the pointer 23 indicates 0. Next, the holding member 51 is rotated with respect to the bolt 43 to move the spherical member 52 up and down, so that the lower end of the measuring pin 41 and the lower end of the spherical member 52 are aligned. Then, the lock nut 50 is rotated with respect to the bolt 43 to bring the lock nut 50 into contact with the holding member 51 so that the holding member 51 does not move.

  Thereby, when the lower end of the measuring pin 41 and the lower end of the spherical member 52 coincide with each other, the pointer 23 indicates 0, and the adjustment of the pointer 23 is completed. Normally keep it in this state.

Next, a method for measuring a rope groove using the rope groove measuring device 40 with the pointer 23 adjusted will be described.
First, as shown in FIG. 4, the spherical member 52 is pressed against the rope groove 2 toward the center direction of the sheave 3 at a portion of the rope groove 2 to be measured where the rope 1 is not hung.

Next, as shown in FIG. 5, the measurement pin 22 is pushed in until the measurement pin 41 hits the bottom surface 4 of the rope groove 2. Then, the scale indicated by the pointer 23 at that time is read. The scale value is the remaining amount d of the rope groove 2.
As already described, since the pointer 23 maintains its position even when the rope groove measuring device 40 is removed from the rope groove 2, it is bright when the measurement site is dark and the scale of the pointer 23 is difficult to see. It can also be reviewed at the place. When the measurement is completed, the measurement pin 22 and the measurement pin 41 are returned so that the pointer 23 indicates 0.

  Thus, according to the present embodiment, there is no need to measure the protruding amount of the pin using a straight scale as in the prior art, so that the measurement operation can be performed in a short time.

Next, a method for measuring the present embodiment more precisely will be described with reference to the drawings. FIG. 6 is a detailed view around the spherical member 52 and the rope groove 2 of FIG.
In the present embodiment, at the time of adjusting the pointer 23, in order to make the lower end of the measuring pin 41 and the lower end of the spherical member 52 easier to match, a part thereof is cut so that the lower end of the spherical member 52 becomes a plane c. is there.

  The remaining amount of the original rope groove 2 is the distance d from the rope 1 to the bottom 4 of the rope groove 2. At this time, since the spherical member 52 has the same diameter as the rope 1, the original remaining amount of the rope groove 2 is the distance d in FIG. However, since the lower end portion of the spherical member 52 is cut, when measured with the rope groove measuring device 40, the distance d1 between the lower end plane c of the spherical member 52 and the bottom surface 4 of the rope groove 2 is measured. The difference e is measured as a long value. The difference e is about 0.2 mm. However, if accuracy is to be obtained by measurement, the pointer 23 may be adjusted by shifting the pointer 23 in the minus direction by the difference e when the pointer 23 is adjusted.

In the embodiment described above, the stopper 44 is provided to limit the amount of movement of the lock nut 50, but there is no practical problem even if the stopper 44 is omitted.
The spherical member may be replaced with a spherical member that matches the diameter of the rope every time the rope to be measured is changed. In this case, the pointer needs to be adjusted each time the spherical member is replaced. Therefore, since the types of rope diameters to be measured are limited, if a rope groove measuring device having a spherical member with a diameter matching the rope diameter is prepared for each rope, each rope groove measuring device Once the pointer has been adjusted, the subsequent adjustment of the pointer is unnecessary.

  Further, in the above-described embodiment, the measurement of the rope groove of the round groove undercut has been described. However, in the normal use, like the V groove undercut or simply the V groove, the rope and the bottom surface of the rope groove are predetermined. If it is necessary to measure this distance, the present invention can be implemented.

  As described above, each embodiment can measure a rope groove in a shorter time than conventional.

1 rope 2 rope groove
3 Sheaves 4 Bottom 20 Gauge (measuring instrument)
22 Measuring pin 23 Pointer 40 Rope groove measuring device 41 Measuring pin (bar-shaped member)
42 Nut 43 Bolt 44 Stopper 50 Lock nut 51 Holding member 52 Spherical member

Claims (6)

In the rope groove measuring device that measures the remaining amount of rope groove of the sheave,
A spherical member having substantially the same diameter as the rope diameter, a rod-like member penetrating the center of the spherical member, a measuring instrument that measures the amount of movement in conjunction with the movement of the rod-shaped member, and the measuring instrument A holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member;
A rope groove measuring device comprising: The rope groove measuring device according to claim 1, wherein the measuring instrument is a dial type gauge, and the rod-shaped member is a measuring pin and a measuring pin provided on the dial type gauge. The holding member is configured to hold the spherical member at an arbitrary position along the moving direction of the measurement pin with respect to the dial-type gauge, and further includes a lock member that holds the position of the holding member. The rope groove measuring device according to claim 2, wherein A hollow bolt through which the rod-shaped member passes is fixed to the measuring instrument, the holding member has a nut shape that is screwed to the bolt, and the spherical member is fixed to the holding member. The rope groove measuring device according to any one of claims 1 to 3. A spherical member having substantially the same diameter as the rope diameter, a rod-like member penetrating the center of the spherical member, a measuring instrument that measures the amount of movement in conjunction with the movement of the rod-shaped member, and the measuring instrument In the method of measuring a rope groove using a rope groove measuring device provided with a holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member,
The rope groove measuring device is adjusted by adjusting the position of the rod-shaped member so that the measuring instrument indicates a reference position, and aligning the tip of the spherical member with the tip of the adjusted rod-shaped member. Rope groove measuring method. A spherical member having substantially the same diameter as the rope diameter, a rod-like member penetrating the center of the spherical member, a measuring instrument that measures the amount of movement in conjunction with the movement of the rod-shaped member, and the measuring instrument In the method of measuring a rope groove using a rope groove measuring device provided with a holding member that holds the spherical member at an arbitrary position along the moving direction of the rod-shaped member,
By pressing the spherical member against the rope groove, pushing the rod-shaped member until it hits the bottom surface of the rope groove, by reading the measurement value of the measuring device at that time,
A rope groove measuring method comprising measuring a distance from a lower surface of a rope to a bottom surface of the rope groove.

Images