JP6053443B2 - Rotary weighing device - Google Patents

Description

  The present invention relates to a rotary weighing device in which a plurality of weighing devices are provided on a rotating body, and the weighing device rotates together with the rotating body.

  As such a rotary weighing device, for example, as disclosed in Patent Document 1, a plurality of weighing instruments are provided around a turntable that rotates horizontally around a longitudinal axis, and the turntable is rotated. While measuring the weight of the objects to be weighed supplied to each measuring instrument, determining the weight rank, and discharging and selecting the objects to be weighed at a predetermined distribution position corresponding to the determined weight rank. There is a machine.

  In the rotary weighing device having the above-described configuration, the object to be weighed that has been conveyed by the supply conveyor is dropped and supplied to the weighing pan provided in the weighing instrument, so that the impact load generated at the time of the drop supply is passed through the weighing pan. A large disturbance signal is generated in the load signal that is transmitted to the load sensor.

  Therefore, by providing a filter in a measurement circuit that processes a load signal from the load sensor, the disturbance vibration signal is attenuated, and measurement is performed in a state in which the influence of the impact load is suppressed as much as possible. The supply of the object to be weighed generates natural vibration based on the frequency corresponding to the spring constant and mass of the weighing system consisting of a load sensor and weighing pan. Is selected and set.

  However, a large step signal is input to the weighing system due to a large impact load generated when the object to be weighed is supplied to the weighing pan, and the object to be weighed is not always supplied to the weighing pan in a fixed posture. Therefore, the impact force due to dropping may not act only in the vertical direction, but may act to give a torsional moment in various directions to the scale system. For this reason, due to a spring constant smaller than the spring constant when a vertical load is applied to the balance system, a natural vibration with a low frequency different from the natural vibration is generated in a composite manner and included in the load signal as a disturbance signal. Sometimes it happens.

  Therefore, in order to obtain an appropriate load signal, a plurality of types of filters that also attenuate low-frequency signal vibrations are required. However, the more types of frequencies to be attenuated, the lower the frequency. The greater the attenuation effect on the frequency signal, the slower the response, and it becomes difficult to converge a disturbance signal having a large peak within a predetermined accuracy within a predetermined time.

  For this reason, for example, Patent Document 2 proposes a means for performing measurement with high accuracy by suppressing generation of a disturbance signal due to an impact when an object to be weighed is supplied to the weighing hopper. . In this means, a weighing hopper is connected and supported on the free end side of a load sensor composed of a load cell, and a rotary cam-like stopper is arranged below the free end side of the load sensor so as to be capable of rotation control. Then, when the object to be weighed is supplied to the weighing hopper, the rotation phase of the stopper is controlled so that the free end side of the load sensor is abutted and supported by the stopper, thereby preventing the load sensor from being displaced by an impact. Thus, the generation of a large disturbance signal is suppressed, and thereafter, the contact support is gradually released by the rotation control of the stopper so that the disturbance signal is not generated, and the displacement of the load sensor is allowed.

JP-A-5-31464 Japanese Patent No. 4808936

  As described above, the displacement of the load sensor is mechanically blocked at the time when the object to be weighed is supplied, and then the displacement of the load sensor is gradually allowed, so that the disturbance due to the impact of the object to be weighed can be reduced. The generation can be sufficiently suppressed, and the measurement can be performed with high accuracy.

  However, if the configuration of Patent Document 2 is applied to a rotary measuring device, each of a number of measuring instruments equipped on the rotary table is provided with a stopper, a driving means such as a motor for rotating the stopper, and its control means. This is necessary, and the equipment cost is greatly increased.

  The present invention has been made by paying attention to such a situation, and can be manufactured at a low cost with a simple structure, while sufficiently suppressing the occurrence of disturbance caused by the impact of the supply of the object to be weighed. An object of the present invention is to provide a rotary weighing device capable of weighing with high accuracy.

  In order to achieve the above object, the present invention is configured as follows.

(1) The present invention includes a plurality of measuring instruments provided around a rotating body that is rotationally driven, and rotates together with the rotating body, and supplies the rotational movement path of the measuring instrument while rotating the rotating body. dropped supplies the objects to be weighed to the weighing device in position, the weight of falling supplied objects to be weighed to a rotary metering device for metered by the load sensor of the meter,
A contact member provided for each of the plurality of measuring instruments;
A support member that is fixedly arranged in a part of a movement path of the contact member that rotates together with the measuring instrument, receives and supports the contact member that rotates, and releases the support.
The part of the moving path where the support member is fixedly arranged is located on the upper side of the rotating body in the rotational direction from the supply position, before the object to be weighed is dropped and supplied to the measuring instrument. From the weighing area where the weight of the object to be weighed and dropped supplied at the supply position is measured by the load sensor of the measuring instrument to the position on the upper side in the rotational direction,
The support member receives and supports an abutting member of the measuring instrument to which an object to be weighed is dropped and supplied at the supply position, and regulates displacement of the load sensor.

  According to the rotary weighing device of the present invention, when the weighing instrument is supplied with an object to be weighed at the supply position in the movement path, the contact portion provided on the weighing instrument is received and supported by the support member fixedly arranged. Since the displacement of the load sensor is restricted, the displacement of the load sensor due to the impact caused by the supply of the object to be weighed is restricted, and the occurrence of disturbance due to the impact is suppressed.

  In addition, since the support member is fixedly arranged on a part of the moving path of the contact member that rotates together with the measuring instrument, each contact member of each of the plurality of measuring instruments that rotates by the rotation of the rotationally driven rotating body. The receiving support by the common support member and the release thereof are sequentially performed. In addition to the drive means for rotationally driving the rotating body, the drive means for driving the contact member and the support member, its control means, etc. Can be manufactured easily and inexpensively.

In a reference example of the present invention, the support member may be configured so that, after the object to be weighed is supplied, the load member has a lowering speed that is slower than a lowering speed in a vibration generated when a load is applied to the one degree of freedom system of the load sensor. The receiving support of the contact member is released so that the sensor is continuously displaced downward.

According to this reference example , after the object to be weighed is supplied, the load sensor is continuously displaced downward at a lowering speed than the lowering speed in the vibration generated when the load sensor responds to the load load to the one-degree-of-freedom system. As described above, since the receiving support of the abutting member is released, the occurrence of transient response vibration accompanying the release of the receiving support is further suppressed.

In the reference example of the present invention, the support member is configured to receive and support the rotating contact member, and the measuring device of the contact member measures the weight of the object to be weighed supplied to the measuring device by a load sensor. Release before reaching the weighing position.

According to this reference example , at the weighing position where the weight of the object to be weighed supplied to the weighing instrument is weighed by the load sensor, the receiving support by the support member is released and the load sensor is allowed to displace. Since the load of the object to be weighed is correctly applied to the load sensor, the object to be weighed can be accurately measured.

( 2 ) In another embodiment of the present invention, there is provided adjusting means for adjusting the height of the contact portion of the contact member.

  According to this embodiment, even if there is a difference in the height of the abutting member due to manufacturing errors or assembly errors of each measuring instrument, the abutting member of each measuring instrument has an appropriate height relative to the common support member. Each can be adjusted to contact. Thereby, the impact support performance in each measuring instrument can be exhibited suitably and sufficiently, and the measuring accuracy for each measuring instrument can be made uniform.

( 3 ) In another embodiment of the present invention, the contact member is constituted by a freely rotatable roller, and the roller is supported by the support member so as to be capable of rolling.

  According to this embodiment, the roller as the contact member provided in the rotating measuring instrument can be smoothly moved while being received and supported by the support member, and the roller vibrates when moving relative to the support member. Can be prepared to supply the object to be weighed in a stable state, and can be detached from the support member in a stable state after the object to be weighed is supplied.

( 4 ) In the embodiment of the above ( 3 ), the support member has a horizontal restriction surface that receives and supports the roller and restricts displacement of the load sensor, and is provided on the start side and the end side of the horizontal restriction surface. It is good also as a structure which has a guide inclined surface which guides the said roller.

  According to this embodiment, when the roller of the measuring instrument rolls and moves on the horizontal regulating surface of the support member, the roller can smoothly ride on the support member without impact by the guide inclined surface, and prepare for supply of the object to be weighed. it can. In addition, when the weighing instrument is separated from the support member after receiving the supply of the object to be weighed, the roller of the weighing instrument can be smoothly detached from the support member without impact by the guide inclined surface. Generation of disturbance can be effectively suppressed.

  As described above, according to the present invention, it is possible to manufacture a rotary weighing device that can perform highly accurate weighing without being affected by an impact when an object to be weighed is supplied. it can.

FIG. 1 is a schematic plan view of a rotary weight sorter equipped with a rotary weighing device. FIG. 2 is a plan view of a measuring instrument in the rotary measuring device. FIG. 3 is a longitudinal sectional view in the supply area of the rotary metering device. FIG. 4 is an enlarged longitudinal sectional view of the main part. FIG. 5 is a developed side view showing the relationship between the contact member and the support member. FIG. 6 is a longitudinal sectional view of another embodiment.

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

  In this embodiment, the rotary weighing device will be described as applied to a rotary weight sorter.

  FIG. 1 is a plan view showing a schematic configuration of a rotary weight sorter according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of the vicinity of the weighing instrument in FIG. 1, and FIG. It is a longitudinal cross-sectional view near the measuring instrument.

  The rotary weight sorter 1 includes a turntable 2 that rotates at a predetermined rotation speed in the direction of the arrow in FIG. 1 around the rotation center x, and rotates around the turntable 2 together with the turntable 2. A plurality (16 in this example) of measuring instruments 3 are attached at equal intervals.

  As shown in FIG. 3, each measuring instrument 3 includes a load sensor 5 including a load cell having an inner base end connected to and supported by a support bracket 4 connected and fixed to the turntable 2, and an outer free end of the load sensor 5. And a weighing pan 6 connected and supported in an outward cantilevered manner.

  As shown in FIGS. 2 and 3, the weighing pan 6 has a pair of receiving plates 6 a opposed to each other on a base end bracket 7 connected and supported on the free end side of the load sensor 5, and a rotating support shaft 8. Via an actuator (not shown) such as an air cylinder (not shown).

  As shown in FIG. 1, an object to be weighed w, such as seafood or agricultural products, is carried up to the upper part of the rotational movement path of the measuring instrument 3 by the supply conveyor 9 and reaches a predetermined rotational movement position. 3 is dropped and supplied to the weighing pan 6. The supply conveyor 9 is configured such that placement areas for accommodating and placing the objects to be weighed one by one are partitioned at predetermined intervals by bars or the like, and horizontally conveys the objects to be weighed and placed in the direction of the arrows. Here, the moving speed of the measuring instrument 3 and the conveying speed of the supply conveyor 9 are controlled synchronously, and the weighing pan 6 of each measuring instrument 3 that has been rotated to the supply area below the conveying end of the supplying conveyor 9 is weighed. The objects w are dropped and supplied one by one.

  The weight w of the object to be weighed supplied from the supply conveyor 9 to the weighing pan 6 of the weighing instrument 3 is measured by the load sensor 5 while moving in the weighing area as the turntable 2 rotates. The weight rank is determined based on the value and a preset boundary weight value.

  In this embodiment, the to-be-measured object w determined to be one of the eight weight ranks, and the weight rank is determined, corresponds to the determined weight rank in the discharge region along the circumferential direction shown in FIG. At a predetermined distribution position, the weighing pan 6 is discharged by a downward opening operation, and is distributed through a discharge chute 10.

  When the object to be weighed w is dropped and supplied to the measuring instrument 3, a drop impact is generated. In order to prevent this impact from adversely affecting the load sensor 5, the following structure is provided. Is provided.

  That is, as shown in FIGS. 2 and 3, a stay 11 for rotatably supporting the support shaft 8 of both receiving plates 6a is provided on the free end side of the weighing pan 6 in each weighing instrument 3. A roller 12 as an abutting member is pivotally supported on the center portion of the stay 11 via a bracket 13 so as to be freely rotatable. The roller 12 is made of a material, such as a metal or a synthetic resin, that is harder than the load sensor 5 so that deformation can be ignored.

  As shown in FIG. 4, spacer plates (shim plates) 14 of various thicknesses are interposed between the stay 11 and the bracket 13, and the lower end height of the roller 12 is adjusted by changing the combined thickness of the spacer plates 14. Then, the lower end height of the roller 12 in all the measuring instruments 3 in the no-load state, that is, the height of the contact portion is adjusted to be constant.

  A protective frame 15 made of a round pipe material is fixedly disposed outside the movement path of the group of measuring instruments 3 via a support (not shown). The connecting bracket 16 attached and fixed to the protective frame 15 has a support member 17 formed by bending a thick metal plate so that deformation is negligible compared to the load sensor 5 so as to be located immediately below the moving path of the roller 12. Are connected and fixed in a vertical wall shape.

  In this embodiment, the support member 17 weighs from the upper side in the rotational direction than the supply position where the object w is dropped and supplied to the measuring instrument 3 (position before the object w is supplied to the measuring instrument 3). It is fixedly arranged in a supply area having a length extending from the area to the upper side in the rotational direction (position where the measuring instrument 3 does not reach the measuring area). The load sensor 5 of the measuring instrument 3 is supported by receiving and supporting the roller 12 at its upper end. Is provided with a horizontal regulating surface S1 having a predetermined length for preventing the lower displacement of the abutment.

  FIG. 5 shows the relative relationship between the roller 12 and the support member 17, and “a” in the figure indicates the axial center level of the roller 12 in an unloaded state in which the object to be weighed w is not placed on the weighing pan 6. , B is an axial center level of the roller 12 in a state where the roller 12 rides on the horizontal regulating surface S1 of the support member 17, and c is a lower side when the object w is loaded on the weighing pan 6 as a stationary load. This is the axial center level of the roller 12 in a state where the roller 12 is displaced.

  On the front side of the start position P2 of the horizontal restricting surface S1 in the support member 17 (upward in the rotational direction) and behind the end position P3 of the horizontal restricting surface S1 (lower in the rotational direction), the guide inclined surface S2 is gently inclined. , S3 are connected in series. The roller 12 of the measuring instrument 3 smoothly rides on the horizontal regulating surface S1 via the rising guide inclined surface S2 on the starting end side, and smoothly from the horizontal regulating surface S1 via the guiding inclined surface S3 on the trailing end side. It is going away.

  In this embodiment, the support member 17 operates on the horizontal regulating surface S1 from the start position P2 to the end position P3 after the operation of dropping the object to be weighed w onto the weighing pan 6 of the measuring instrument 3 is started. It arrange | positions so that it may become the movement path | route of the roller 12 of the measuring device 3 until completion.

  Note that the timing at which the operation of dropping supply of the object to be weighed w onto the weighing pan 6 of the weighing instrument 3 is started, strictly speaking, the timing at which the object to be weighed w reaches the weighing pan 6 is As long as the roller 12 reaches the guide inclined surface S2 of the support member 17, it does not have to reach the starting end position P2 of the horizontal regulating surface S1.

  In this embodiment, when the weighing pan 6 of the weighing instrument 3 reaches the supply area of the object to be weighed w, the roller 12 rides on the horizontal regulating surface S1 via the rising guide inclined surface S2 of the support member 17 and rolls. While the roller 12 moves and the downward displacement of the roller 12 is prevented, that is, while the roller 12 rides on the horizontal regulating surface S1, the object to be weighed is dropped and supplied to the weighing pan 6 of the measuring instrument 3.

  If there is no support member 17 and the load of the object w to be weighed supplied to the measuring instrument 3 is a static load, the roller 12 of the measuring instrument 3 has an axial center level of an unloaded state. The vibration converges at the axial center level c which is the stationary load position, while vibrating in the vertical direction of the axial center level c below a. That is, the load sensor 5 of the weighing instrument 3 is located below the no-load position when the object to be weighed is loaded from above, and in the vertical direction of the stationary load position corresponding to the stationary weight of the object to be weighed w. The vibration converges at the static load position while vibrating.

  Actually, since an impact load is applied, assuming that there is no support member 17, the roller 12 of the measuring instrument 3 is supported at a position where its axial center level drops to a level far below the axial center level c. Since the downward load of the roller 12 is received and supported by the horizontal regulating surface S1 of the member 17, the axial center level of the roller 12 does not displace below the axial center level b. At the same time, the weighing system including the weighing pan 6 and the load sensor 5 together with the roller 12 is not displaced and is not subjected to a torsional moment.

  As described above, although the impact is generated by the drop supply of the object to be weighed w, since the downward displacement of the entire measuring instrument 3 including the load sensor 5 is prevented, the transmission of the impact to the load sensor 5 is suppressed, and the impact load is reduced. It is possible to suppress the generation of a disturbance signal having a large scale system due to the generation, that is, a disturbance noise signal having various frequencies caused by a peak in a load signal, a torsion phenomenon, or the like. Here, in the support member 17 of FIG. 5, assuming that the position where the horizontal regulating surface S1 ends is the output end A, and there is no guide inclined surface S3, when the roller 12 moves to the output end A, When a load input signal is applied to the load sensor as a step input of the load on the weighing pan on which the object is placed, a vibration signal is generated in the weighing system. The impact force is much smaller than the impact force when dropping.

  However, as a more preferable configuration, when the weighing instrument 3 to which the object to be weighed w is moved moves to the vicinity of the end position P3 of the horizontal regulating surface S1, the roller 12 is gently lowered from the horizontal regulating surface S1 toward the end side. The roller 12 is applied to the guide inclined surface S3, and is gradually displaced downward along the guide inclined surface S3 from the axial center level b, finally down to the axial center level c. Thereafter, the roller 12 is separated from the guide inclined surface S3. It is set as such. At this time, the downward displacement of the roller 12 is displaced downward at a sufficiently low speed with respect to the response determined by the natural vibration period of the scale system including the weighing pan 6 and the load sensor 5 together with the roller 12. In other words, a heavy load is applied to the load sensor 5 as a slow ramp input, and the load sensor 5 is continuously displaced downward at a sufficiently slow speed with respect to a response determined by the natural vibration period of the scale system. To do. In the measurement area, after the roller 12 moves away from the guide inclined surface S3, the weight value is acquired from the load signal in anticipation of a predetermined time.

  The horizontal travel distance L from the end position P3 of the horizontal regulating surface S1 to the separation position P4 where the roller 12 starts to separate from the guide inclined surface S3 is the heaviest on the rotational movement speed of the measuring instrument 3 and the weighing pan 6. The roller 12 when the load is applied is set based on the downward displacement amount from the shaft center level b to the shaft center level c and the natural frequency of the scale system including the load sensor 5. In other words, when a step load is applied to the balance system, the time t required for the response of the balance system to reach the peak load is about ½ period of the natural frequency of the balance system. If the horizontal travel distance L is set to move over a certain amount of time, the roller 12 can be detached from the support member 17 without causing a transient response vibration associated with the release of the restriction.

  Specifically, the horizontal travel distance L is determined as follows, for example.

In FIG. 5, the horizontal travel distance required when the roller 12 travels on the guide inclined surface S3 descending from the end position P3 of the horizontal regulating surface S1 after horizontal travel and is separated from the guide slant surface S3 at the separation position P4. L (mm) is
The rotation radius r from the rotation center x of the roller 12 is set to 1000 mm.

Length of rotation circumference = 2 ・ π ・ 1000 (mm)
The rotation speed of the measuring instrument 3 is set to 20 rpm = 1/3 rps at maximum.

Moving speed of roller 12 v = 2 · π · 1000/3 (mm / sec)
= 2 · π / 3 (mm / msec)
In addition, it is assumed that the natural frequency of the weighing system including the load sensor, that is, the one-degree-of-freedom vibration system is 25 Hz, and one cycle = 40 msec.

  When a step load is applied to the weighing system, the time required for the response of the weighing system to reach the peak load is about 1/2 of the natural vibration period (= 20 msec). Therefore, the end position P3 of the horizontal regulating surface S1 For example, the time required to travel on the guide inclined surface S3 from the position to the departure position P4 is set to 80 msec in consideration of a required time four times this time. That is, it is lowered to the displacement position of the static load over 80 msec.

At this time, the linear distance L of the guide inclined surface S3 that is inclined downward is:
L = (2 · π / 3) · 80 = (160 · π) / 3 mm
Therefore, the support member 17 having a downward slope length of at least Lmm as a horizontal distance is provided.

  The height change amount D for determining the tilt amount is determined by the difference between the shaft center level b and the shaft center level c, but the displacement of the load sensor due to the stationary weight of the object to be weighed placed on the weighing pan 6. That is, if the difference between the axial center level a and the axial center level c is, for example, 80 μm, the inclination dimension is determined by setting a value exceeding 80 μm, for example, about 100 μm. In short, it may be set to a value exceeding the magnitude of the displacement of the load sensor when the stationary weight of the heaviest object to be used for weighing is loaded.

  As described above, according to this embodiment, when the weighing instrument 3 receives the supply of the object to be weighed in the supply area, the roller 12 provided in the weighing instrument 3 is received and supported by the support member 17 fixedly arranged. Since the displacement of the load sensor 5 is restricted, the displacement of the load sensor 5 due to the impact caused by the supply of the object to be weighed is restricted, and the occurrence of disturbance due to the impact is suppressed. Thereafter, the receiving support of the roller 12 is released so that the load sensor 5 is continuously lowered and displaced at a lowering speed slower than the lowering speed in the vibration generated when the load sensor 5 responds to the load load to the one-degree-of-freedom system. That is, since it disengages from the support member 17, the generation of a disturbance signal associated with the disengagement can be suppressed extremely small.

  As described above, since a large step load does not act when the support member is detached, a filter for attenuating the vibration signal included in the load signal has a plurality of types corresponding to various frequencies, a large smoothing characteristic, and a response time. It is not necessary to use a long filter, and the weight value of the object to be weighed w can be obtained with high accuracy in a short time after the supply of the object to be weighed to the weighing pan 6 is completed.

  In addition, the rollers 12 of the plurality of measuring instruments 3 that are rotated and moved by the rotation of the rotary table 2 that is rotationally driven are sequentially supported and released by the common support member 17. In addition to the drive means for driving 2 to rotate, the drive means for driving the roller 12 and the support member 17 and its control means are not required, and can be manufactured easily and inexpensively.

[Other Embodiments]
The present invention can also be implemented in the following forms.

  (1) As shown in FIG. 6, a roller 12 as a contact member is provided on the base end side of the weighing pan 6 in the measuring instrument 3, and a support member 17 that receives and supports the roller 12 may be fixedly disposed. it can.

  (2) The roller 12 as the contact member is provided on each of the proximal end side and the free end side of the weighing pan 6 in the weighing instrument 3, and the supporting members 17 corresponding to these are fixedly arranged on the inside and outside of the weighing pan 6. It can also be configured to reliably receive and support at two locations inside and outside.

  (3) As a contact member on the measuring instrument 3 side, a thick plate-shaped contact member provided with the horizontal regulating surface S1, the inclined surface S2 on the start end side, and the inclined surface S3 on the end side facing downward on the lower end side. Is provided at the outer free end of the weighing pan 6 and a roller is disposed at the supply position as a support member facing the lower end surface of the abutting member, and the weighing pan 6 of the weighing instrument 3 that has reached the supply position is weighed. By receiving and supporting by the contact between the contact member on the plate 6 side and the roller on the fixed side, it is also possible to prevent the impact from reaching the load sensor 5.

2 Turntable 3 Weighing device 5 Load sensor 6 Weighing pan 12 Contact member (roller)
17 Support member S1 Horizontal regulating surface S2 Guide inclined surface S3 Guide inclined surface w Object to be weighed

Claims (4)

Provided around a rotating body to be rotated, and provided with a plurality of measuring instruments that rotate together with the rotating body, while rotating the rotating body, the measuring instrument is covered by the supply position of the rotational movement path of the measuring instrument. A rotary weighing device that drops and supplies a weighing object and measures the weight of the object to be weighed and dropped by a load sensor of the weighing instrument,
A contact member provided for each of the plurality of measuring instruments;
A support member that is fixedly arranged in a part of a movement path of the contact member that rotates together with the measuring instrument, receives and supports the contact member that rotates, and releases the support.
The part of the moving path where the support member is fixedly arranged is located on the upper side of the rotating body in the rotational direction from the supply position, before the object to be weighed is dropped and supplied to the measuring instrument. From the weighing area where the weight of the object to be weighed and dropped supplied at the supply position is measured by the load sensor of the measuring instrument to the position on the upper side in the rotational direction,
The support member receives and supports the contact member of the measuring instrument to which the object to be weighed is supplied by being dropped at the supply position, and regulates the displacement of the load sensor.
A rotary weighing device characterized by that. Adjusting means for adjusting the height of the contact portion of the contact member;
The rotary weighing device according to claim 1. The contact member is constituted by a freely rotatable roller, and this roller is supported by the support member so as to be able to roll.
The rotary measuring device according to claim 1 or 2. The support member has a horizontal restriction surface that receives and supports the roller and restricts displacement of the load sensor, and has a guide inclined surface that guides the roller to a start end side and a terminal end side of the horizontal restriction surface.
The rotary measuring device according to claim 3 .

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