JP2011121678A - Vibration detecting device for stacker crane and stacker crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration detecting device for a stacker crane which can quickly attach a strain gauge to the stacker crane. <P>SOLUTION: The vibration detecting device is adapted to detect the vibration of a mast 4 erected on a travelling vehicle body in the front-back direction of the vehicle body. Attachment parts 13A on both ends of a plate-shaped object to be detected 13 is attachably provided on the side close to the stacker crane such that the object to be detected 13 is deformed by at least one of extensive stress and bending stress due to the vibration of the mast 4 in the front-back direction of the vehicle body. The strain gauge is attached to the object to be detected 13 in order to detect the deformation of the object to be detected 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vibration detection device for a stacker crane configured to detect a vibration in a longitudinal direction of a mast standing on a traveling vehicle body portion with a strain gauge, and a stacker equipped with the vibration detection device. Regarding cranes.

  Such a vibration detection device for a stacker crane detects vibration in the longitudinal direction of the mast when the stacker crane travels with a strain gauge, and the detection information is used for various purposes.

  For example, the natural frequency of the mast is calculated based on the detection information of the strain gauge, and the mast deterioration is monitored by monitoring the change in the natural frequency over time, for example, monitoring the mast deterioration. (For example, refer to Patent Document 1).

  Further, it may be used to correct the reference traveling speed pattern of the stacker crane based on the strain gauge detection information to suppress the vibration of the mast in the longitudinal direction of the vehicle body (see, for example, Patent Document 2). .

Furthermore, the mast vibration model is obtained based on the strain gauge detection information, and may be used to generate a vibration suppression travel speed pattern suitable for suppressing the vibration of the mast in the longitudinal direction of the vehicle body (for example, , See Patent Document 3).
In Patent Document 3, the vibration of the mast during travel of the stacker crane is detected by a strain gauge to correct the vibration suppression travel speed pattern. However, when such correction is not performed. In the method, the strain gauge can be attached to the stacker crane only at the stage of generating the vibration suppression travel speed pattern, and thereafter, the strain gauge can be detached from the stacker crane.

And when equip | installing a stacker crane with a strain gauge, conventionally, as described in the said patent document, it has comprised so that a strain gauge may be affixed on a mast.
Incidentally, although there is no detailed description in the above-mentioned patent document, in general, a strain gauge is formed by forming a strain gauge such as a foil strain gauge on the upper surface of a base material configured as a thin electrical insulator. The base material is attached to the mast using an adhesive.

JP 2006-240866 A JP-A-9-272605 JP 2008-285269 A

Conventionally, since the strain gauge is attached to the mast, that is, it is attached to the mast using an adhesive, the time required for the adhesive to dry, for example, requires day and night. As a result, the time required for mounting the strain gauge becomes longer due to the longer time.
By the way, if the time required to install the strain gauge becomes long, when installing a new strain gauge or when an existing strain gauge breaks down and installs a new strain gauge, the stacker crane is connected to the strain gauge. It must be stored stationary until installation is complete.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a vibration detection device for a stacker crane that can quickly attach a strain gauge to the stacker crane. .
Another object of the present invention is to provide a stacker crane that can appropriately detect vibration of a mast.

The first characteristic configuration of the vibration detection device for a stacker crane of the present invention is configured to detect a vibration in the vehicle longitudinal direction of a mast erected on a traveling vehicle body portion with a strain gauge,
The plate-like object to be detected is deformed by deformation of at least one of expansion and contraction stress and bending stress caused by vibration of the mast in the longitudinal direction of the vehicle body. And
The strain gauge is mounted on the detected body to detect deformation of the detected body.

That is, the attachment portions at both ends of the plate-like detected object are attached to the stacker crane side, and the detected object is deformed by at least one of the stretching stress and the bending stress by the vibration of the mast in the longitudinal direction of the vehicle body. In this state, the deformation is detected by the strain gauge.
That is, the deformation of the detected object that is deformed by the vibration of the mast in the longitudinal direction of the vehicle body can be detected by the strain gauge as the vibration of the mast in the longitudinal direction of the vehicle body.

  The strain gauges can be attached to the detected object in advance prior to the time when the detected object is attached to the stacker crane, and the attachment portions at both ends of the detected object with the strain gauge attached can be attached. Mounting on the stacker crane side can be performed quickly by, for example, fixing by using bolts or other tightening tools to the mounting points where the mounting portions at both ends of the detected object are formed on the stacker crane side. Since the configuration can be used, the work of attaching the both end sides of the detection object to which the strain gauge is attached to the stacker crane side can be performed quickly.

  In other words, a strain gauge can be attached to the stacker crane by preparing a detected object with a strain gauge attached in advance and attaching the detected object to the stacker crane. It can be done quickly.

  Therefore, according to the first characteristic configuration of the vibration detection device for a stacker crane of the present invention, it is possible to provide a vibration detection device for a stacker crane that can quickly attach the strain gauge to the stacker crane.

In addition to the first feature configuration described above, the second feature configuration of the vibration detection device for a stacker crane of the present invention includes:
The detected object is formed in a state in which an intermediate part between the attachment parts at both ends is curved,
The strain gauge is mounted on an intermediate portion of the object to be detected to detect deformation of the intermediate portion.

That is, since the detected object is formed in a state where the intermediate portion between the attachment portions at both ends is curved, at least one of the stretching stress and the bending stress is detected by the vibration in the longitudinal direction of the vehicle body of the mast. If it acts on, the intermediate part which curves in the to-be-detected body will deform | transform.
Since the strain gauge is attached to the intermediate portion to detect the deformation of the intermediate portion of the detected object, the deformation due to the vibration of the mast of the intermediate portion of the detected object in the longitudinal direction of the vehicle body is detected by the strain gauge. It will be detected.

Since the intermediate part formed in the curved state in the detected body is easily stretchable and bendable, it is greatly deformed by the stretching stress or bending stress acting on the detected body. A large deformation is caused by the vibration of the mast, and the large deformation can be detected by a strain gauge.
In other words, it is possible to appropriately detect the vibration of the mast by detecting the deformation of the intermediate portion of the detected object that is largely deformed by the vibration of the mast with the strain gauge.
By the way, since the intermediate part formed in the curved state in the detection object is greatly deformed by the vibration of the mast, it becomes possible to increase the detection resolution and the mast with less vibration in the longitudinal direction of the vehicle body, for example It is also convenient to detect vibrations in the longitudinal direction of the vehicle body of a lattice structure or truss structure mast.

  In addition, since a large force is not required to bend and stretch the middle part of the detected object, the strength of attaching the attachment portions at both ends of the detected object to the stacker crane side can be reduced, so that the detected object The structure which attaches the attachment part of both ends to the stacker crane side can be simplified.

  Therefore, according to the second characteristic configuration of the vibration detection device for a stacker crane of the present invention, it is possible to appropriately detect the vibration of the mast in addition to the operational effects of the first characteristic configuration, and the mounting configuration. Thus, it is possible to provide a vibration detection device for a stacker crane that can be simplified.

In addition to the first or second feature configuration, the third feature configuration of the vibration detection device for a stacker crane of the present invention,
The strain gauge is mounted on both front and back surfaces of the detected object.

  That is, the strain gauge is generally used as one of the four resistors constituting the Wheatstone bridge circuit, and is used by being incorporated in the bridge circuit. Therefore, the temperature correction is performed using a so-called two-gauge method in which the pair of strain gauges having the same characteristics are incorporated into the Wheatstone bridge circuit as two of the four resistors constituting the Wheatstone bridge circuit. However, it becomes possible to increase the output from the Wheatstone bridge circuit, and to improve the detection accuracy of the vibration of the mast in the longitudinal direction of the vehicle body.

  In other words, the change in the resistance value of the pair of strain gauges mounted on the front and back surfaces of the detected object is that when the detected object is deformed, the resistance value of the other strain gauge increases when the resistance value of one strain gauge increases. By incorporating a pair of strain gauges whose resistance values change in the opposite direction in this way into the Wheatstone bridge circuit as two of the four resistors that make up the Wheatstone bridge circuit, temperature compensation is achieved. In addition, the output from the Wheatstone bridge circuit can be increased.

  Therefore, according to the third characteristic configuration of the vibration detection device for a stacker crane of the present invention, in addition to the operational effect of the first or second characteristic configuration, the accuracy of detecting the vibration of the mast in the longitudinal direction of the vehicle body can be improved. Therefore, it is possible to provide a vibration detection device for a stacker crane.

  A first feature configuration of the stacker crane according to the present invention is that the vibration detection device for the stacker crane according to any one of the first feature configuration to the third feature configuration is provided between a lower end portion of the mast and the traveling vehicle body portion side. The detection object is provided in a state of being attached in an inclined posture.

  That is, the mast erected on the traveling vehicle body portion vibrates in the longitudinal direction of the vehicle body in such a manner as to swing back and forth with respect to the traveling vehicle body portion. And the attachment part on the other end side attached to the traveling vehicle body part side of the detected body are largely displaced relative to the vibration of the mast in the longitudinal direction of the vehicle body, and between the lower end part of the mast and the traveling vehicle body part side. Since the object to be detected attached in an inclined posture is easily deformed greatly by vibrations in the longitudinal direction of the mast, vibrations in the longitudinal direction of the mast can be detected well with a strain gauge.

  In other words, as a form of mounting the detected object on the stacker crane, it is conceivable to attach each of the attachment portions at both ends of the detected object to locations separated in the vertical direction of the mast. Although the location where the mast is attached and the location where the upper end of the mast body is attached are relatively displaced with the vibration of the mast in the longitudinal direction of the mast, both locations are traveling vehicle bodies due to the vibration of the mast in the longitudinal direction of the vehicle. Since the part is displaced with respect to the part, the relative displacement amount is small, and the detected object is not easily deformed greatly by the vibration of the mast in the longitudinal direction of the vehicle body. Vibration tends to be difficult to detect with a strain gauge.

  On the other hand, the position of the mast in the longitudinal direction of the vehicle body between the location where the mounting portion on the one end side of the detected body is attached and the location where the mounting portion on the other end side of the detected body is attached on the traveling vehicle body portion side. The relative displacement due to vibration is such that the location where the mounting portion on the other end side of the detected body on the traveling vehicle body side is not displaced by vibration in the longitudinal direction of the mast body, Compared to the case where each of them is mounted at a position away from the up and down direction of the mast, the detected object becomes greatly deformable due to vibration in the longitudinal direction of the mast body. It tends to be easy to detect the vibration in the direction appropriately with the strain gauge.

  Therefore, according to the first characteristic configuration of the stacker crane of the present invention, it is possible to provide a stacker crane that can appropriately detect the vibration of the mast in the longitudinal direction of the vehicle body.

In addition to the first feature configuration, the second feature configuration of the stacker crane of the present invention,
The mast is provided with a mast-side mounting seat that is fastened and fixed by a fastener with the mounting portion on one end side of the detected body being applied to the mast, and the other end side of the detected body is provided on the traveling vehicle body portion side. The mounting portion of the vehicle body is provided with a mounting seat for tightening and fixing the mounting portion with a tightening tool in the applied state.

  That is, the mounting portion on the one end side of the detected body is fixed to the mast side mounting seat with a fastening tool such as a bolt, and the mounting portion on the other end side of the detected body is fixed on the vehicle body side mounting seat. The object to be detected can be mounted on the stacker crane by tightening and fixing with a fastening tool such as a bolt in a state where it is applied to the stacker crane.

  In other words, the detected body is mounted on the stacker crane by tightening and fixing the fastening tool to the mast side mounting seat and the vehicle body side mounting seat that are equipped in advance with the mounting portions at both ends of the detected body being applied. In addition, the object to be detected can be detached from the stacker crane by loosening the fastener and detaching the attachment parts at both ends of the object to be detected from the mast side mounting seat and the vehicle body side mounting seat. The object to be detected can be attached and detached satisfactorily.

  In addition, the detected object is fixed with the mounting parts at both ends applied to the mast-side mounting seat and the vehicle body-side mounting seat, so that the expansion and contraction stress and bending stress are appropriately applied by the vibration of the mast in the longitudinal direction of the vehicle body. Since it becomes easy to act and easily deforms greatly, vibrations in the longitudinal direction of the vehicle body of the mast can be appropriately detected by detecting the large deformation with a strain gauge.

  Therefore, according to the second characteristic configuration of the stacker crane of the present invention, in addition to the function and effect of the first characteristic configuration, the detected object can be attached and detached satisfactorily, and vibration of the mast in the longitudinal direction of the vehicle body can be detected appropriately. Can provide a stacker crane.

Side view of stacker crane Side view of mounting part of vibration detector Front view of vibration detector Side view of vibration detector Longitudinal side view of strain gauge Schematic side view showing detection action state of vibration detection device Diagram showing Wheatstone bridge circuit Side view showing another embodiment Side view showing another embodiment Side view showing another embodiment

  An embodiment of a stacker crane and a vibration detection device of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the stacker crane K includes a traveling vehicle body portion 2 that can reciprocate along a traveling rail 1 on the floor side, and a guide rail 3 that is erected from the traveling vehicle body portion 2 and that has an upper portion on a ceiling-side guide rail 3 A pair of front and rear posts 4 and 5 that are guided in this manner, a connecting frame 6 that connects the upper ends of the posts 4 and 5, and a lifting platform that is driven up and down while being guided by the pair of front and rear posts 4 and 5. 7 and a fork F for transferring articles mounted on the lifting platform 7.

The traveling vehicle body portion 2 is provided with traveling wheels 9 and idle wheels 10 driven by a traveling electric motor 8 on the front and rear sides, and a lifting electric motor 11 for driving the lifting platform 7 up and down, A control device H for controlling the operation of the stacker crane K is provided.
Further, the traveling vehicle body portion 2 is equipped with a lateral position regulating roller for regulating the position in the lateral direction with respect to the traveling rail 1. Although not illustrated, the traveling vehicle body portion 2 is also equipped with a lifting restriction roller that contacts the lower surface side of the traveling rail 1 in order to restrict the lifting from the traveling rail 1.

As shown in FIGS. 2 to 4, vibrations in the longitudinal direction of the front mast 4 of the front and rear masts 4 and 5 erected on the traveling vehicle body portion 2 in the stacker crane K are detected by the strain gauge G. A vibration detecting device S is provided at the lower end side portion of the front mast 4.
That is, the vibration detection device S is configured by mounting strain gauges G on both the front and back surfaces of the plate-shaped detected body 13, and the detected body 13 is connected to the front mast 4 (hereinafter, the detection target mast). In the state where at least one of the stretching stress and bending stress is applied and deformed by vibration in the longitudinal direction of the vehicle body), the attachment portions 13A at both ends thereof are provided on the stacker crane side so as to be freely attached, The strain gauge G is configured to detect deformation of the detection target 13.

Hereinafter, the vibration detection device S will be described.
The detected body 13 is formed in a state in which an intermediate portion 13B between the attachment portions 13A at both ends is curved in an arc shape with spring steel, and a pair of strain gauges G are formed on the intermediate portion 13B of the detected body 13. It is mounted on both the front and back sides of the intermediate portion 13B in order to detect deformation.
A pair of left and right bolt insertion holes T are formed in each of the attachment portions 13 </ b> A at both ends of the detection target 13.

And the to-be-detected body 13 is attached with the inclination attitude | position between the lower end part of the detection target mast 4 and the traveling vehicle body part side.
Specifically, a mast side mounting seat 15 is provided at the lower end portion of the detection target mast 4 to be fastened and fixed with a bolt 14 as a tightening tool in a state where the mounting portion 13A on one end side of the detected body 13 is applied. ing. Further, as a fastening tool in a state where the mounting portion 13A on the other end side of the detected body 13 is applied to the mast mounting plate body 16 which is welded to the lower end of the detection target mast 4 and is bolted to the traveling vehicle body portion 2. A vehicle body side mounting seat 17 that is fastened and fixed by a bolt 14 is provided.

The mast side mounting seat 15 is attached to the detection target mast 4 by welding or the like, and the vehicle body side mounting seat 17 is attached to the mast mounting plate 16 by welding or the like, and the mast side mounting seat 15 and the vehicle body side mounting seat 17 Each is formed with a screw hole for the bolt 14.
Each of the mast side mounting seat 15 and the vehicle body side mounting seat 17 is formed with a receiving convex portion U for receiving the end face of the detected body 13, and is provided for the mast side mounting seat 15 and the vehicle body side mounting seat 17. Although the detected body 13 is positioned, the detected body 13 formed in a state where the intermediate portion 13B is curved in an arc shape requires a large force to bend and stretch the intermediate portion 13B. Therefore, the receiving projection U for receiving the end face of the detected body 13 may be omitted, and the detected body 13 may be positioned only by the frictional force generated by fastening the bolt 14.
Incidentally, as described above, it is not necessary to increase the fastening torque of the bolt 14 because a large force is not required to bend and stretch the intermediate portion 13B of the detected object 13.

Then, the body 13 to be detected is fastened and fixed with bolts 14 with the mounting portion 13A on one end side being attached to the mast side mounting seat 15 and the mounting portion 13A on the other end side is mounted on the vehicle body side mounting seat 17. In a state of being fastened and fixed by the bolt 14 in the applied state, the detection target mast 4 is attached in an inclined posture between the lower end portion of the detection target mast 4 and the traveling vehicle body portion side.
Incidentally, in this embodiment, although the case where the to-be-detected body 13 is attached in the attitude | position in which the intermediate part 13B is dented in the back side of the vehicle body front-back direction is illustrated, the to-be-detected body 13 is mounted in the vehicle body front-back direction. You may implement with the form attached with the attitude | position which protrudes ahead.

As shown in FIG. 5, the strain gauge G is formed by forming a strain gauge 21 such as a foil strain gauge on the upper surface of a base material 20 configured as a thin electric insulator, and covering the entire upper portion with a laminate film 22. In addition, it is configured to include a pair of signal lines 23 connected to the strain gauge 21.
In the figure, reference numeral 24 denotes a solder portion for connecting the strain gauge 21 and the signal line 23.

Such a strain gauge G is attached to the detected body 13 by affixing the base material 20 to the detected body 13 using a dedicated adhesive.
Incidentally, in the present embodiment, the signal line 23 is fixed while the strain gauge G is protected by covering the portion to which the strain gauge G is mounted on the detection target 13 with a covering material 25 such as silicon resin. It is configured as follows.

In the pair of strain gauges G, the resistance value varies in the reverse direction with the vibration of the detection target mast 4.
That is, as shown in FIG. 6A, when the detection target mast 4 swings forward and the intermediate portion 13B of the detected body 13 is greatly curved, the front strain gauge G is bent greatly. Compression occurs, and the strain gauge G on the back side is pulled to generate tension.
Further, as shown in FIG. 6B, when the detection target mast 4 swings backward and the intermediate portion 13B of the detected body 13 extends, the front strain gauge G is less bent and pulled. The strain gauge G on the back side is compressed by a shortening force.
6A and 6B exaggerately show the deformed state of the detection target 13, and for that purpose, the vibration of the detection target mast 4 is exaggerated and the deformation state of the detection target 13 is exaggerated. It is.

  As shown in FIG. 7, since the change in the resistance value of each of the pair of strain gauges G is minute, a Wheatstone bridge circuit is formed by the pair of strain gauges G and the pair of resistors R, and the pair of input terminals N The bridge voltage E is input between the two and the output voltage V output between the pair of output terminals D is measured. That is, in this embodiment, the output voltage V is measured by a so-called two gauge method.

In the case of this Wheatstone bridge circuit, since the resistance value of the pair of strain gauges G varies in the reverse direction with the vibration of the detection target mast 4, the change ΔV of the output voltage V is expressed by the following equation: Can be expressed as
ΔV = 1/2 ・ Q ・ E ・ ε
ε is the required strain, and Q is a proportional constant representing the sensitivity of the strain gauge G.
Although not illustrated, the pair of output terminals D are connected to an amplification amplifier, and the output amplified by the amplification amplifier is input to the control device H.

As described above, in the present embodiment, by mounting the detected body 13 to which the strain gauge G is mounted on the stacker crane K, the vibration in the longitudinal direction of the detection target mast 4 can be detected by the strain gauge G. it can.
And since the attachment part 13A of the both ends of the to-be-detected body 13 can be attached to the stacker crane side, attachment / detachment of the vibration detection apparatus S, ie, attachment / detachment of the to-be-detected body 13 can be performed rapidly.

Further, since the detected body 13 is attached in an inclined posture between the lower end portion of the detection target mast 4 and the traveling vehicle body portion 2, the detected body 13 is caused by vibration in the front-rear direction of the detection target mast 4. Thus, the vibration in the front-rear direction of the detection target mast 4 can be easily detected with high accuracy.
In addition, the stacker crane K is provided with a mast side mounting seat 15 and a vehicle body side mounting seat 17, and the mounting portions 13 </ b> A at both ends of the detected body 13 are applied to the mast side mounting seat 15 and the vehicle body side mounting seat 17. In this state, the bolts 14 are fastened and fixed, so that the detected body 13 can be quickly attached and detached, and the detected tension of the detected body 13 by the vibration of the detection target mast 4 in the longitudinal direction of the vehicle body. It can be installed in a state where the bending stress acts appropriately.

  Further, the detected body 13 is formed in a state where the intermediate portion 13B between the attachment portions 13A on both ends is curved in an arc shape, and the pair of strain gauges G detects deformation of the intermediate portion in the detected body 13. Since it is attached to the intermediate portion as much as possible, by detecting the deformation of the intermediate portion of the detected body 13 that is largely deformed by the vibration of the detection target mast 4 with the strain gauge G, the vibration of the detection target mast 4 is appropriately detected. It is possible to detect it.

  In addition, since the resistance values of the pair of strain gauges G attached to both the front and back surfaces of the detection target 13 fluctuate in the reverse direction with the vibration of the detection target mast 4, the output of the Wheatstone bridge circuit is By increasing the change, the detection accuracy can be improved.

[Another embodiment]
(1) In the above embodiment, the case where the detected body 13 is formed in a state where the intermediate portion 13B between the attachment portions 13A on both ends is curved in an arc shape is illustrated, but as shown in FIG. Alternatively, the detection target 13 may be formed in a flat plate shape that is not curved.

(2) In the above embodiment, the case where the detected body 13 is mounted in an inclined posture between the lower end portion of the mast 4 and the traveling vehicle body portion side is illustrated, but as shown in FIGS. You may implement with the form with which the detection body 13 is mounted | worn with the mast 4. FIG.

  FIG. 9 shows that a pair of upper and lower mounting seats 18A and 18B are attached to the mast 4 by welding or the like in a state where the amount of projection from the side surface of the mast 4 is the same, and the upper and lower pair of mounting seats 18A and 18B are The case where the flat detection target 13 is attached in a posture parallel to the mast 4 is illustrated.

FIG. 10 shows that a pair of upper and lower mounting seats 19A and 19B are attached to the mast 4 by welding or the like in a state where the amount of protrusion from the side surface of the mast 4 is larger on the lower side, The case where the to-be-detected body 13 provided with 19B of curved intermediate parts is attached to 19B in the attitude | position inclined with respect to the mast 4 is illustrated.
Incidentally, in any case shown in FIG. 9 and FIG. 10, a receiving convex portion U for receiving the end face of the detection target 13 is provided.

(3) In the above embodiment, the case where the strain gauges G are mounted on both the front and back surfaces of the detected body 13 is exemplified. However, the strain gauge G is mounted on one of the front and back surfaces of the detected body 13. Also good.

(4) In the above embodiment, the case where the front mast 4 of the pair of front and rear masts 4 and 5 in the stacker crane K is used as the detection target mast is exemplified. However, the rear mast 5 may be used as the detection target mast. Alternatively, the vibration detection device S may be provided for each of the front and rear masts 4 and 5.

(5) In the above embodiment, the case where the vibration detection device S is equipped on a stacker crane including a pair of front and rear masts 4 and 5 is illustrated, but the vibration detection device S is equipped on a stacker crane including a single mast. Of course, it is also good.

(6) In the above-described embodiment, the case where the fixing portions 13A at both ends of the detection target body 13 are applied to the mounting seats 15 and 17 on the stacker crane side and fastened with the fastening tool 4 such as a bolt is illustrated. Instead of the mounting seats 15 and 17, the stacker crane side is provided with mounting portions having fitting holes into which the mounting portions 13A at both ends of the detected body 13 are fitted, and the mounting portions at both ends of the detected body 13 are provided. 13A may be mounted in a state of being fixed with screws or the like in a state of being fitted in the fitting hole of the attachment portion, and various structures for attaching the attachment portions 13A at both ends of the detected body 13 to the stacker crane side are various. Can be used.

2 traveling vehicle body portion 4 mast 13 detected body 13A mounting portion 13B intermediate portion 15 mast side mounting seat 17 vehicle body side mounting seat G strain gauge K stacker crane S vibration detection device

Claims (5)

A vibration detection device for a stacker crane configured to detect a vibration in a longitudinal direction of a mast of a mast erected on a traveling vehicle body part with a strain gauge,
The plate-like object to be detected is deformed by deformation of at least one of expansion and contraction stress and bending stress caused by vibration of the mast in the longitudinal direction of the vehicle body. And
A vibration detection apparatus for a stacker crane, wherein the strain gauge is attached to the detected body so as to detect deformation of the detected body. The detected object is formed in a state in which an intermediate portion between the attachment portions at both ends is curved,
The vibration detection device for a stacker crane according to claim 1, wherein the strain gauge is attached to an intermediate portion of the object to be detected so as to detect deformation of the intermediate portion.   The vibration detection device for a stacker crane according to claim 1 or 2, wherein the strain gauges are mounted on both front and back surfaces of the detection object.   The vibration detection device for a stacker crane according to any one of claims 1 to 3, is provided in a state in which the detected body is attached in an inclined posture between a lower end portion of the mast and the traveling vehicle body portion side. Stacker crane.   The mast is provided with a mast-side mounting seat that is fastened and fixed by a fastener with the mounting portion on one end side of the detected body being applied to the mast, and the other end side of the detected body is provided on the traveling vehicle body portion side. The stacker crane according to claim 4, further comprising a vehicle body side mounting seat that fastens and fixes the mounting portion of the mounting portion with a tightening tool in an applied state.

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