Weighing device

Abstract

To provide a technique capable of shortening the time required for weighing while achieving high weighing accuracy.SOLUTION: A weighing device 1 includes a suspension tool 5 that connects a load applying part 3 that transmits a load to a load cell 2 to a weighing container 4 to which a weighing target is input. An upper sleeve member 61 and a lower sleeve member 62 being elastic bodies are interposed at the connection points between the suspension tool 5 and the load applying part 3 and between the weighing container 4 and the suspension tool 5. This configuration mitigates impact loads and enables rapid attenuation of vibrations.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a weighing device for measuring the weight of an object.

Background Art

[0002] Conventionally, in order to divide a powdery or granular object into a fixed amount or measure the flow rate of the object between processes, a weighing device having a load cell, a weighing container, a load loading part for transmitting a load to the load cell, and a suspension tool for suspending the weighing container from the load loading part has been used. In the weighing device, the object is put into the weighing container by dropping, and the load applied to the weighing container is measured by the load cell.

[0003] If the space between the load loading part and the weighing container is completely fixed, there is a concern that the device may malfunction due to the impact load generated when the object is put in. Therefore, in order to mitigate this impact load, a proposal has been made to enable a certain amount of oscillation between the load loading part and the weighing container. On the other hand, since large oscillations affect the weighing result, in order to achieve both weighing accuracy and shortening of the time required for weighing, it is required to quickly converge the oscillations.

[0004] For example, Patent Document 1 proposes a suspension tool having a ball bearing. This suspension tool includes a first member attached to a shaft-shaped load loading part, and a second member attached to the first member and fixed to the weighing container. The first member has a first hole and a second hole into which ball bearings are respectively fitted. By inserting the load loading part into the ball bearing of the first hole, the first member is rotatably attached to the load loading part. By inserting a rotating shaft provided at one end of the second member into the ball bearing of the second hole of the first member, the second member is rotatably attached to the first member. The load loading part and the first hole have a horizontal axis, and the second hole has a horizontal axis perpendicular to the first hole. Also, the other end of the second member is fixed to the weighing container with bolts.

[0005] According to Patent Document 1, the following effects are said to exist. Since the first member can swing around the axis of the load-bearing part and the second member fixed to the measuring container can swing around an axis perpendicular to the axis of the load-bearing part with respect to the first member, the swing caused by the impact quickly converges due to the self-weight of the measuring container and the object, and each low-friction ball bearing enables the first member and the second member to quickly return to the position where the measuring container is at the lowest point. Thereby, weighing can be performed in a short time while improving the weighing accuracy.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] In the prior art, the requirement of quickly converging the vibration of the measuring container and weighing with high accuracy has not been sufficiently met.

[0008] An object of the present invention is to provide a technique capable of shortening the time required for weighing while achieving high weighing accuracy.

Means for Solving the Problems

[0009] In order to solve the above problems, the present invention provides the following measuring container.

[0010] The weighing container according to the first invention includes a load cell, a load bearing part that transmits a load to the load cell, a weighing container capable of accommodating an object to be weighed, a suspension tool that suspends the weighing container from the load bearing part, a first upper buffer part which is an elastic body attached to at least one of the load bearing part and the suspension tool, a second upper buffer part which is an elastic body arranged to be aligned with the first upper buffer part in a predetermined direction, and an upper tightening part that tightens the first upper buffer part and the second upper buffer part in the predetermined direction; one of the load bearing part or the suspension tool is sandwiched between the first upper buffer part and the second upper buffer part, thereby being connected to the other.

[0011] The weighing container according to the second invention includes a load cell, a load bearing part that transmits a load to the load cell, a weighing container capable of accommodating an object to be weighed, a suspension tool that suspends the weighing container from the load bearing part, a first lower buffer part which is an elastic body attached to at least one of the weighing container and the suspension tool, a second lower buffer part which is an elastic body arranged to be aligned with the first lower buffer part in a predetermined direction, and a lower tightening part that tightens the first lower buffer part and the second lower buffer part in the predetermined direction; one of the weighing container or the suspension tool is sandwiched between the first lower buffer part and the second lower buffer part, thereby being connected to the other.

[0012] Also, the weighing container may include a first upper buffer part and a second upper buffer part, as well as a first lower buffer part and a second lower buffer part.

Advantages of the Invention

[0013] The metering container can be displaced with respect to the load bearing part within the elastic range of these buffer parts by the first upper buffer part and the second upper buffer part, or the first lower buffer part and the second lower buffer part. That is, while being able to absorb an impact load, the displacement range is more restricted than before, so the rocking generated along with the displacement becomes smaller. Also, the time taken for the rocking to decay is shortened by these buffer parts. Therefore, according to the present invention, it is possible to shorten the time required for metering while achieving high metering accuracy.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0015] Hereinafter, exemplary embodiments will be described. In the figures, the x-axis is the horizontal axis, the y-axis is the vertical axis, and the z-axis is the axis perpendicular to the x-axis and the y-axis.

[0016] 1. Measuring device 1 FIG. 1 is a partially exploded perspective view of the measuring device 1. FIGS. 2 to 4 are drawings showing a suspension tool 5 that connects the load bearing part 3 and the measuring container 4 disposed below it and the surrounding structure in the measuring device 1. FIG. 2 is an exploded perspective view, FIG. 3 is a side view, and FIG. 4 is a front view. FIG. 5 is an enlarged cross-sectional view of the suspension tool 5 and its surroundings in FIG. 4. In FIG. 3, for convenience of explanation, the load bearing part 3 is shown by a dotted line.

[0017] As shown in FIGS. 1 to 2, the measuring device 1 of the present embodiment includes a holding frame 11, a load cell 2, a load bearing part 3, a measuring container 4, a suspension tool 5, an upper sleeve-type member 61, a lower sleeve-type member 62, an upper tightening part 71, a lower tightening part 72, a supply gate 8, and a discharge gate (not shown). By opening and closing the supply gate 8, an object is introduced from the storage tank into the measuring container 4. Further, when the discharge gate is opened, the introduced object is discharged outside the measuring container 4. The measuring device 1 transmits the load of the measuring container 4 into which the object has been introduced to the load cell 2, and measures the object based on the output of the load cell 2.

[0018] The holding frame 11 includes a rear member 12, a front member 13, two support plates 14, two load cell covers 15, and a control box 16 attached to the front surface.

[0019] The rear member 12 and the front member 13 face each other in the z-axis direction and are arranged such that their longitudinal directions are parallel to the x-axis direction. The heights (dimensions in the y-axis direction) of the rear member 12 and the front member 13 are set such that the bottom of the measuring container 4 held by the holding frame 11 does not contact the installation surface of the measuring device 1 and floats in the air. The lower parts of the rear member 12 and the front member 13 may be connectable to other devices. In this way, the installation surface of the measuring device 1 may be a flat surface or another device provided below the measuring device 1. Here, examples of other devices include a device for bagging the object after measurement or a device for processing the object after measurement.

[0020] The two support plates 14 are flat members that face each other in the x-axis direction and are arranged such that their longitudinal directions are parallel to the z-axis. Both ends of each support plate 14 are connected to the rear member 12 and the front member 13, respectively. That is, the holding frame 11 has a substantially rectangular shape in plan view due to the rear member 12, the front member 13, and the two support plates 14. The support plate 14 is formed with a first through hole 14a and a second through hole 14b, which are two through holes arranged in the y-axis direction along its longitudinal direction (i.e., the z-axis direction). The suspension tool 5 is passed through the first through hole 14a and the second through hole 14b. The diameters of the first through hole 14a and the second through hole 14b are larger than the diameter of the suspension tool 5 so that the suspension tool 5 can be displaced in the horizontal direction. Note that the holding frame 11 can be appropriately provided with additional structures such as ribs for reinforcing the support plate 14, angles for fixing between members, bolts and nuts, etc.

[0021] The load cell cover 15 is provided on the support plate 14 so as to cover the load cell 2 from above and from the side. In FIG. 1, only the load cell cover 15 at the back in the x-axis direction among the two load cell covers 15 is shown, and the illustration of the front load cell cover 15 is omitted.

[0022] The control box 16 houses a control device and the like described later inside, and an input device for receiving instructions and inputs from the user, a display unit for displaying measurement results to the user, etc. are provided on its front surface.

[0023] The load cell 2 is a so-called beam type in this embodiment. The load cell 2 is arranged between the two first through holes 14a and 14b of the support plate 14 on the support plate 14 such that its longitudinal direction is parallel to the longitudinal direction of the support plate 14 (i.e., the z-axis direction). Also, the load cell 2 is fixed on the support plate 14 with bolts at its first end (the left end in FIG. 3). A lower spacer 21 is inserted between the first end of the load cell 2 and the support plate 14. The load cell 2 converts the load from the weighing container 4 transmitted through the load bearing portion 3 disposed thereon into an electrical signal and outputs it to a control device described later.

[0024] The load-bearing part 3 transmits the load to the load cell 2. The load-bearing part 3 is a flat plate-shaped member, and is arranged on the load cell 2 such that its longitudinal direction is parallel to the longitudinal direction of the load cell 2 (that is, the z-axis direction). Near both ends of the load-bearing part 3, a first load hole 3a and a second load hole 3b that penetrate the load-bearing part 3 in the vertical direction are provided coaxially with the two first through holes 14a and the second through holes 14b of the support plate 14. In the load-bearing part 3, at the first load hole 3a and the second load hole 3b, the weighing container 4 is suspended by the suspension tool 5. An upper spacer 22 is inserted between the second end of the load cell 2 and the load-bearing part 3. In the load-bearing part 3, another through hole is formed at a position corresponding to the upper spacer 22, and the load-bearing part 3 and the upper spacer 22 are fixed to the second end part of the load cell 2 by bolts passing through this through hole.

[0025] The weighing container 4 can temporarily accommodate the object to be weighed input from above. The weighing container 4 has a container body 41, a hood part 42, and a handle 43. The container body 41 has a substantially rectangular parallelepiped outer shape including two side walls parallel to the y-z plane and facing each other, and two side walls parallel to the x-y plane and facing each other. The upper part of the container body 41 is open, and a discharge port (not shown) is formed at the lower part. The hood part 42 is formed so as to project obliquely downward and outward over the entire circumference of the upper edge of the container body 41. Further, walls are formed so as to extend parallel and downward from the outer edge of the hood part 42 to each of the four side walls of the container body 41. Among these four walls, two wall parts parallel to the y-z plane are the handle 43. In other words, the weighing container 4 has the container body 41 and the handle 43 provided parallel to both side surfaces of the container body 41 in the x-axis direction. The handle 43 is provided with two through holes in the x-axis direction respectively. Each through hole is called a "first container hole" and a "second container hole", and is respectively denoted by reference numerals 43a and 43b.

[0026] Referring to FIG. 6 and the like, the suspension tool 5 will be described. FIG. 6 is a perspective view of the suspension tool 5. The suspension tool 5 has a cylindrical portion 51, a plate portion 52, and an annular portion (horizontal portion) 53 provided at the upper end of the cylindrical portion 51, the plane direction of which is horizontal. The hole of the annular portion 53 is called the upper connection hole and is denoted by reference numeral 53a. The upper connection hole 53a and the cylindrical portion 51 are coaxially arranged, and this axis is illustrated as "A".

[0027] The outer diameter of the annular portion 53 is the same as the outer diameter of the cylindrical portion 51, and the inner diameter of the annular portion 53, that is, the diameter of the upper connection hole 53a, is smaller than the inner diameter of the cylindrical portion 51. By having the annular portion 53, the suspension tool 5 has an opening at its upper end that is smaller than the inner diameter of the cylindrical portion 51 and is continuous with the inside of the cylindrical portion 51.

[0028] The plate portion 52 is arranged at the lower end of the cylindrical portion 51 on the axis A and parallel to the axis A. The plate portion 52, together with the cylindrical portion 51, constitutes a vertical portion extending in the vertical direction. A lower connection hole 52a, which is a through hole, is formed in the plate portion 52. The lower connection hole 52a is arranged on the axis A, and the axis B of the lower connection hole 52a is arranged so as to be orthogonal to the axis A. Further, the plate portion 52 is integrally formed with the cylindrical portion 51. In this specification, for the cylindrical portion 51 and the plate portion 52, "being integrally formed" includes cases where the cylindrical portion 51 and the plate portion 52 are integrally formed by casting or the like, and cases where the cylindrical portion 51 and the plate portion 52 are separately formed and then integrated by welding or the like. The plate portion 52 of the present embodiment has a U-shaped notch 52c with corners at its upper end, and the lower end of the cylindrical portion 51 fits into the notch 52c. The space between the cylindrical portion 51 and the notch 52c is welded.

[0029] Two suspension tools 5 are arranged below one load-bearing portion 3 such that the axis A coincides with the axes of the first load hole 3a and the second load hole 3b respectively. Also, these suspension tools 5 are arranged such that their respective axes B coincide with the axes of the first container hole 43a and the second container hole 43b arranged in the z-axis direction.

[0030] The upper sleeve-shaped member 61 and the lower sleeve-shaped member 62 will be described with reference to FIG. 5 and the like. The upper sleeve-shaped member 61 is an elastic body and has an upper cylindrical portion 61a and an upper flange portion 61b that extends radially outward of the upper cylindrical portion 61a at one end of the upper cylindrical portion 61a. That is, in a cross-section parallel to the height direction of the upper cylindrical portion 61a, the outer shape of the upper sleeve-shaped member 61 is T-shaped. Note that the upper sleeve-shaped member 61 has a through-hole in the height direction of its upper cylindrical portion 61a. Hereinafter, with respect to the upper cylindrical portion 61a and the lower cylindrical portion 62a, the "height direction" refers to the height direction in the cylinder (that is, the direction perpendicular to the radial direction), regardless of the vertical direction. The upper flange portion 61b is disposed between the load-bearing portion 3 and the annular portion 53 of the suspension tool 5, and the upper cylindrical portion 61a is disposed so as to penetrate the annular portion 53 at the upper connection hole 53a. In other words, the height of the upper cylindrical portion 61a is greater than the thickness of the annular portion 53, and the upper cylindrical portion 61a is inserted into the upper connection hole 53a such that the end on the side opposite to the upper flange portion 61b reaches the back side of the annular portion 53, that is, the inside of the cylindrical portion 51.

[0031] The lower sleeve-shaped member 62 has the same structure as the upper sleeve-shaped member 61. Specifically, the lower sleeve-shaped member 62 is an elastic body and has a lower cylindrical portion 62a and a lower flange portion 62b that is provided at one end of the lower cylindrical portion 62a and extends radially outward of the lower cylindrical portion 62a at one end of the lower cylindrical portion 62a. Further, the lower flange portion 62b is disposed between the plate portion 52 and the handle 43, and the lower cylindrical portion 62a is disposed so as to penetrate the handle 43 at the first container hole 43a. In other words, the height of the lower cylindrical portion 62a is greater than the thickness of the handle 43, and the lower cylindrical portion 62a is inserted into the first container hole 43a such that the end on the side opposite to the lower flange portion 62b reaches the back side of the handle 43.

[0032] The upper tightening portion 71 and the lower tightening portion 72 will be described with reference to FIGS. 5 and 7 and the like. FIG. 7 is a cross-sectional view showing the upper tightening portion 71 and the structure around it. Note that in the cross-sectional views of FIGS. 5 and the like, the illustration of the washer is omitted.

[0033] The upper tightening portion 71 has an upper bolt 711 and an upper nut 712. The upper bolt 711 has an upper head portion 711a and an upper shaft portion 711b. The upper nut 712 is formed to fit onto the upper shaft portion 711b. The upper nut 712 is embedded in the upper cylindrical portion 61a near the end on the side opposite to the upper flange portion 61b such that the inner peripheral surface (i.e., the threaded portion) of the upper nut 712 is exposed from the inner peripheral surface of the upper cylindrical portion 61a. In other words, the threaded hole of the upper nut 712 is arranged coaxially with the upper cylindrical portion 61a of the upper sleeve-type member 61. Further, the upper head portion 711a has a diameter larger than the diameters of the first load hole 3a and the second load hole 3b.

[0034] The lower tightening portion 72 has a configuration similar to that of the upper tightening portion 71. The lower tightening portion 72 has a lower bolt 721 and a lower nut 722. The lower bolt 721 has a lower head portion 721a and a lower shaft portion 721b. The lower nut 722 is formed to fit onto the lower shaft portion 721b. In the lower cylindrical portion 62a, near the end on the side opposite to the lower flange portion 62b, the inner peripheral surface (i.e., the threaded portion) of the lower nut 722 is embedded such that it is exposed from the inner peripheral surface of the lower cylindrical portion 62a. In other words, the threaded hole of the lower nut 722 is arranged coaxially with the lower cylindrical portion 62a of the lower sleeve-type member 62. Further, the lower head portion 721a has a diameter larger than the diameter of the lower connection hole 52a.

[0035] The connection between the suspension tool 5 and the weighing container 4, and the connection between the suspension tool 5 and the load-bearing portion 3 will be described.

[0036] As shown in FIGS. 2 to 5 and the like, in the lower sleeve-type member 62, the lower cylindrical portion 62a penetrates the handle 43 in the first container hole 43a, and the lower flange portion 62b is arranged to contact the handle 43 of the measuring container 4 from the outside thereof (opposite to the container body 41). The suspension tool 5 is arranged such that the plate portion 52 contacts the outside of the lower flange portion 62b, and the lower connection hole 52a is coaxial with the first container hole 43a, that is, coaxial with the through hole of the lower sleeve-type member 62. The lower shaft portion 721b passes through the lower connection hole 52a, is further inserted into the lower sleeve-type member 62, and is screwed into the lower nut 722. The lower head portion 721a contacts the outside of the plate portion 52 around the lower connection hole 52a. In this way, the lower tightening portion 72 tightens the lower sleeve-type member 62 in the x-axis (horizontal) direction, and the suspension tool 5 and the measuring container 4 are connected.

[0037] In the second container hole 43b aligned with the first container hole 43a in the z-axis direction, and also in the first container hole 43a and the second container hole 43b on the opposite side of the x-axis direction, the suspension tool 5 and the measuring container 4 are similarly connected by the lower tightening portion 72. In this way, four suspension tools 5 are connected to one measuring container 4.

[0038] Two adjacent suspension tools 5 in the z-axis direction are inserted from below into the first through hole 14a and the second through hole 14b, respectively, such that the upper ends of the cylindrical portions 51 protrude above the support plate 14. A load cell 2 is arranged between the two protruding cylindrical portions 51.

[0039] The upper cylindrical portion 61a of the upper sleeve-type member 61 is inserted into the upper connection hole 53a from above, and the lower surface of the upper flange portion 61b contacts the annular portion 53 around the upper connection hole 53a.

[0040] The load applying portion 3 is placed on the load cell 2 so that the first load hole 3a and the second load hole 3b are coaxial with the first through hole 14a and the second through hole 14b, respectively, that is, so that the first load hole 3a and the second load hole 3b are coaxial with the through holes of the two upper sleeve-type members 61. The upper shaft portion 711b passes through the load applying portion 3 at the first load hole 3a, and is further inserted into the upper sleeve-type member 61 and screwed into the upper nut 712. The upper head portion 711a abuts against the upper surface of the load applying portion 3 around the first load hole 3a. In this way, the upper fastening portion 71 fastens the upper sleeve-type member 61 in the y-axis (vertical) direction, and the suspender 5 and the load applying portion 3 are connected.

[0041] A hanging device 5 is similarly connected to the second load hole 3b of the same load applying part 3, and further, on the opposite side in the x-axis direction, another load applying part 3 is connected to two hanging devices 5. In this way, one weighing container 4 is suspended from two load applying parts 3 by four hanging devices 5.

[0042] As described above, the suspending device 5 is disposed so that the axis A, i.e., the longitudinal direction, is parallel to the vertical (y-axis) direction. Therefore, during weighing, the load applied to the weighing container 4 acts in a direction that mainly pulls the suspending device 5 in the longitudinal direction. This allows the weighing container 4 to be stably supported, and the suspending device 5 is less likely to be deformed, such as warped. In particular, by aligning the upper connecting hole 53a and the lower sleeve-shaped member 62 on the A axis, the force application point of the cylindrical portion 51 to the load application portion 3 and the force application point from the plate portion 52 to the cylindrical portion 51 are aligned in the vertical direction, so that the weighing container 4 can be stably supported.

[0043] In the above, for convenience of explanation, the lower connecting portion has been described first, but the assembly order is not limited to this.

[0044] Hereinafter, the holding of the measuring container 4 and the suspension tool 5 by the upper sleeve-type member 61 and the lower sleeve-type member 62 will be described with reference to FIGS. 7 and 8. FIG. 8 is a cross-sectional view when the upper tightening portion 71 in FIG. 7 tightens the upper sleeve-type member 61 and the upper sleeve-type member 61 is compressed. However, in FIG. 8, for convenience of explanation, a front view instead of a cross-section is shown for the upper sleeve-type member 61.

[0045] In FIG. 7, the upper shaft portion 711b is fitted into the upper nut 712. However, since the screwing amount is small, the upper cylindrical portion 61a of the upper sleeve-type member 61 is not compressed and is in a natural state. When the screwing amount of the upper shaft portion 711b into the upper nut 712 increases, the distance between the upper head portion 711a and the upper nut 712 becomes shorter. Thus, the distance between the upper nut 712 and the upper flange portion 61b becomes shorter. As shown in FIG. 8, the upper cylindrical portion 61a is compressed in its height direction, that is, the y-axis direction. As a result, the upper cylindrical portion 61a bulges in the radial direction. Further, the upper flange portion 61b is sandwiched between the load-bearing portion 3 and the cylindrical portion 51, so that its position is fixed and it is compressed in the y-axis direction. Thus, the annular portion 53 is sandwiched in the y-axis direction between the bulged portion of the upper cylindrical portion 61a and the upper flange portion 61b around the upper connecting hole 53a.

[0046] Although illustration is omitted, at the connection point by the lower clamping portion 72, the lower sleeve-shaped member 62 is compressed in the height direction of its lower cylindrical portion 62a, that is, in the x-axis direction. Specifically, when the screwing amount of the lower shaft portion 721b into the lower nut 722 increases, the distance between the lower head portion 721a and the lower nut 722 becomes shorter. Thus, the distance between the lower nut 722 and the lower flange portion 62b becomes shorter, and the lower cylindrical portion 62a is compressed in its height direction, that is, in the x-axis direction. As a result, the lower cylindrical portion 62a bulges in the radial direction. Also, the lower flange portion 62b is sandwiched between the plate portion 52 and the handle 43, so that its position is fixed and it is compressed in the x-axis direction. Thus, the handle 43 of the measuring container 4 is sandwiched between the lower cylindrical portion 62a and the lower flange portion 62b in the x-axis direction around the first container hole 43a. The same applies to the second container hole 43b.

[0047] The buffering effect by the upper sleeve-shaped member 61 and the lower sleeve-shaped member 62 will be described.

[0048] When a measurement object is put into the measuring container 4, an impact load acts on the measuring container 4. At this time, the measuring container 4 can be displaced relatively within the elastic range of the lower sleeve-shaped member 62 with respect to the suspension tool 5. In particular, the lower sleeve-shaped member 62 enables three-dimensional displacement in all of the shear direction, compression direction, and suspension direction between the measuring container 4 and the suspension tool 5. As a result, the impact load is mitigated. Also, since the lower sleeve-shaped member 62 absorbs the impact between the measuring container 4 and the suspension tool 5, the vibration of the measuring container 4 rapidly attenuates in all directions. Furthermore, due to the intervention of the lower sleeve-shaped member 62, the vibration transmitted from the measuring container 4 to the suspension tool 5 becomes smaller than the vibration generated in the measuring container 4.

[0049] Further, the suspension tool 5 can be displaced relative to the load bearing part 3 within the elastic range of the upper sleeve-shaped member 61. In particular, the upper sleeve-shaped member 61 enables displacement in all of the shear direction, compression direction, and suspension direction between the suspension tool 5 and the load bearing part 3, that is, three-dimensional displacement. As a result, the impact load is further alleviated. Also, since the upper sleeve-shaped member 61 absorbs the impact between the suspension tool 5 and the load bearing part 3, the vibration of the suspension tool 5 rapidly attenuates in all directions. Further, due to the interposition of the upper sleeve-shaped member 61, the vibration transmitted from the suspension tool 5 to the load bearing part 3 becomes even smaller than the vibration transmitted from the metering container 4 to the suspension tool 5.

[0050] As described above, the displacement between the metering container 4 and the suspension tool 5 and the displacement between the suspension tool 5 and the load bearing part 3 are made possible by the elasticity of the upper sleeve-shaped member 61 and the lower sleeve-shaped member 62. As a result, the impact load acting on the suspension tool 5, the load bearing part 3, and the load cell 2 is reduced, so that the occurrence of problems such as distortion or damage of these members is suppressed.

[0051] At the same time, the range of these displacements is limited to the elastic range of the upper sleeve-shaped member 61 and the lower sleeve-shaped member 62, and since the vibration rapidly attenuates, it is possible to obtain high metering accuracy while shortening the time from the input of the object to be metered until the metering result based on the output result of the load cell 2 is calculated, as compared with the prior art.

[0052] Also, the fact that the vibration finally transmitted to the load cell 2 becomes significantly smaller than the vibration of the metering container 4 also contributes to achieving both high metering accuracy and shortening of the time required for metering.

[0053] Note that each of the upper sleeve-type member 61 and the lower sleeve-type member 62 has a buffering effect of reducing the impact load in the three-dimensional direction and damping vibration in the shear, compression, and suspension directions even when alone. In the present embodiment, the direction of the upper sleeve-type member 61 (the first direction: the y-axis direction) and the direction of the lower sleeve-type member 62 (the second direction: the x-axis direction) intersect rather than being parallel, and further intersect within the same plane, and further are perpendicular, so that a higher buffering effect can be obtained in all directions. Also, it is preferable that either the first direction or the second direction is the vertical direction (that is, the other is the horizontal direction). Since the first direction is the vertical direction, the present embodiment also satisfies this condition.

[0054] Further, the upper sleeve-type member 61 and the lower sleeve-type member 62 also have the effect of enhancing the uniformity of the load applied from the weighing container 4 to the load cell 2. When a load is applied to the load cell 2 via a plurality of suspension tools 5 as in the present embodiment, and when a plurality of load cells 2 are provided, it is desirable to apply the load with a balance that is evenly close within the load cell 2 and between the load cells 2. If the position of the weighing container 4 is completely fixed with respect to the load application part 3 and the weighing container 4 cannot be displaced with respect to the load application part 3, in order to achieve the balance as described above, it is necessary to perform the dimensional and alignment of each member extremely precisely. Alternatively, it is conceivable to provide the suspension tool 5 with a structure in which the length can be changed and change the length at the time of assembly to correct the variation in load due to dimensional error. However, high precision is required for assembly, and the number of members increases due to the length change, so the structure becomes complicated. On the other hand, as in the present embodiment, by arranging the upper sleeve-type member 61 and the lower sleeve-type member 62 between the suspension tool 5 and the load application part 3 and between the weighing container 4, it is possible to absorb the dimensional error due to the machining tolerance without performing length adjustment and realize a load balance that is evenly close.

[0055] Note that as the upper sleeve-type member 61 and the lower sleeve-type member 62, as long as they have the above-described buffering effect, their composition, physical properties, shape, dimensions, etc. can be appropriately changed. Also, the upper sleeve-type member 61 and the lower sleeve-type member 62 are selected so as to obtain a preferable vibration attenuation rate (vibration frequency ratio) according to the natural vibration frequencies of the respective members in the weighing device and the performance required for the weighing device.

[0056] For example, as the upper sleeve-type member 61 and the lower sleeve-type member 62, known elastic bodies such as rubber are applied, and known anti-vibration rubbers are preferably applied.

[0057] The number of support points of the weighing container 4, that is, the number of suspension tools 5 provided for one weighing container is four in the above-described embodiment, but it may be three or less, or five or more.

[0058] 2. Control of the weighing device 1 Referring further to FIG. 9, the weighing by the weighing device 1 will be described. FIG. 9 is a block diagram showing a schematic configuration of the weighing device 1.

[0059] In addition to the above-described configuration, the weighing device 1 includes a supply drive unit 91 that opens and closes the supply gate 8, a discharge drive unit 92 that opens and closes the discharge gate, an output unit 93 such as a display unit that outputs the weighing result, and a control device 94 that controls the operations of each part and is connected to the load cell 2. The control device 94 has a supply control unit 941, a discharge control unit 942, a weight calculation unit 943, and an output control unit 944. The control device 94 is composed of an arithmetic device such as a CPU, a memory, a timer, etc.

[0060] The supply control unit 941 controls the operation of the supply drive unit 91 to open the supply gate 8 and close it when a certain period of time has elapsed or when the object to be measured has been loaded up to a predetermined weight (loading time T1), thereby loading the object to be measured from the storage tank into the weighing container 4. After waiting until the vibration converges after the supply gate 8 is closed, that is, after the loading is completed (waiting time T2), the weight calculation unit 943 reads the output value from the load cell 2 and calculates the weight of the object to be measured based on the output value. The discharge control unit 942 opens the discharge gate to discharge the object to be measured from the weighing container 4 when the supply gate 8 is opened, that is, when the loading time and the waiting time (T1 + T2) have elapsed since the start of loading. By repeating the above operations, the weighing device 1 can intermittently weigh the object to be measured.

[0061] The calculation result by the weight calculation unit 943, that is, the weighing result, is stored in a memory (not shown), and the output control unit 944 reads this weighing result and presents it to the user via the output unit 93.

[0062] The time T2 is the time required for the vibration to subside to such an extent that the target weighing accuracy can be achieved. As described above, in the weighing device 1, since the vibration and impact are absorbed by the upper sleeve-type member 61 and the lower sleeve-type member 62 which are elastic bodies, it is possible to shorten the time T2 while achieving the same weighing accuracy, or to improve the weighing accuracy while maintaining the time T2.

[0063] In addition, technologies such as calibration used in conventional weighing devices are also preferably applied to the present invention.

[0064] 3. Other embodiments, etc. As described above, the embodiments have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited thereto, and is also applicable to embodiments in which appropriate changes, replacements, additions, omissions, etc. are made. It is also possible to combine the components described in the above embodiments to form a new embodiment. In addition, among the components described in the accompanying drawings and the detailed description, there may be not only components essential for solving the problem, but also components not essential for solving the problem for the purpose of exemplifying the technology. Therefore, just because those non-essential components are described in the accompanying drawings and the detailed description, it should not be immediately determined that those non-essential components are essential.

[0065] For example, the present application also discloses the following technology.

[0066] (1) The present invention is applicable to a weighing container having a load cell, a load bearing portion for transmitting a load to the load cell, a weighing container capable of accommodating an object to be weighed, and a suspension member for suspending the weighing container from the load bearing portion.

[0067] (2) The weighing container can include a first upper buffer portion that is an elastic body attached to at least one of the load bearing portion and the suspension member, a second upper buffer portion that is an elastic body arranged to be aligned with the first upper buffer portion in a predetermined direction, and an upper clamping portion that clamps the first upper buffer portion and the second upper buffer portion in this predetermined direction. One of the load bearing portion and the suspension member is sandwiched between the first upper buffer portion and the second upper buffer portion and thus connected to the other.

[0068] (3) The metering container may include an upper cylindrical portion including a second upper buffer portion, and an upper flange portion as a first upper buffer portion that extends radially outward at one end of the upper cylindrical portion. The upper sleeve-type member may be arranged such that the height direction of the upper cylindrical portion is parallel to the predetermined direction in (2) above. The upper sleeve-type member 61 illustrated in FIG. 5 and the like is an elastic body having an upper cylindrical portion 61a and an upper flange portion 61b that extends radially outward at one end of the upper cylindrical portion 61a. The upper cylindrical portion 61a includes a second upper buffer portion, and the upper flange portion 61b corresponds to the first upper buffer portion. The upper sleeve-type member 61 is arranged such that the height direction of the upper cylindrical portion 61a (that is, the direction of the through hole of the upper sleeve-type member 61) is parallel to the predetermined direction in (2) above.

[0069] (4) As illustrated in FIG. 5 and the like, the upper tightening portion may have a bolt-nut structure. The illustrated upper tightening portion 71 has an upper bolt 711 and an upper nut 712. The upper bolt 711 is inserted into the upper cylindrical portion 61a, and the upper nut 712 is fitted onto the upper bolt 711. By screwing the upper bolt 711 into the upper nut 712, the upper tightening portion is configured to tighten the upper cylindrical portion 61a and the upper flange portion 61b in the predetermined direction in (2) above.

[0070] In this embodiment, by tightening the upper tightening portion 71, the upper cylindrical portion 61a bulges in the radially outer direction thereof, that is, in a direction perpendicular to the predetermined direction, and the suspension tool 5 is sandwiched between the bulged portion (second upper buffer portion) of the upper cylindrical portion 61a and the upper flange portion 61b, thereby being connected to the load-bearing portion 3.

[0071] (5) However, the first upper buffer portion and the second upper buffer portion may be separate members instead of being included in one sleeve-type member as in the embodiment shown in FIG. 5 and the like.

[0072] (6) Regarding "one of the load-bearing part or the suspension tool is sandwiched between the first upper buffer part and the second upper buffer part and thus is connected to the other", in the embodiment shown in FIG. 5 and the like, the suspension tool 5 is exemplified as the member sandwiched between the first upper buffer part and the second upper buffer part. However, the member to be sandwiched may be the load-bearing part 3. In other words, the load-bearing part, the first upper buffer part, the suspension tool, and the second upper buffer part may be arranged in this order in a predetermined direction, or the first upper buffer part, the load-bearing part, the second upper buffer part, and the suspension tool may be arranged in this order in a predetermined direction.

[0073] (7) The upper tightening part is not limited to the bolt-nut structure, and as long as the load-bearing part and the suspension tool can be connected by tightening the first and second upper buffer parts, other members such as clips may be used.

[0074] (8) In the above (2), the statement that the first upper buffer part is "attached to at least one of the load-bearing part and the suspension tool" is not limited to attachment by a bolt-nut structure such as the upper tightening part 71. For example, the first upper buffer part may be sandwiched between the load-bearing part and the suspension tool by other means such as a clip, or may be fixed to at least one of these members by adhesion or the like.

[0075] (9) In the form shown in FIG. 5 and the like, the upper nut 712 is embedded in the upper cylindrical part 61a of the upper sleeve-type member 61, but it is not limited to this, and it may be provided as a member separate from the first and second upper buffer parts.

[0076] (10) As the "predetermined direction" in the above (2), the vertical direction is exemplified in FIG. 5 and the like, but the present invention is not limited to this, and it may be the horizontal direction or other directions.

[0077] (11) For the connection between the load-bearing part and the suspension tool, load holes and upper connection holes in the above-mentioned predetermined direction may be formed in the load-bearing part and the suspension tool, respectively. Further, when the predetermined direction is the vertical direction, the suspension tool has a horizontal portion extending horizontally below these load-bearing parts and a vertical portion extending vertically from the horizontal portion, and an upper connection hole in the vertical direction may be formed in the horizontal portion.

[0078] In FIG. 5 and the like, the predetermined direction is the vertical direction, the load-bearing part 3 has a first load hole 3a and a second load hole 3b having an axis in the vertical direction, and the suspension tool 5 has an annular part 53 having an upper connection hole 53a as a horizontal portion and a cylindrical part 51 and a plate part 52 as vertical portions. With such a shape, the suspension tool 5 is not easily deformed even when the load of the weighing container 4 and the object to be weighed is applied, and the weighing accuracy can be maintained even when repeated weighing is performed. However, the horizontal portion and the vertical portion are not limited to this shape. For example, the horizontal portion and the vertical portion may each be in a flat plate shape and may form an L shape when combined.

[0079] (12) Further, the upper sleeve-shaped member may be arranged such that the upper cylindrical portion penetrates the horizontal portion in the upper connection hole in (10) above. In this case, it is desirable that the diameter of the upper connection hole is formed larger than the diameter of the load hole. Further, the upper flange portion is arranged between the load-bearing part and the horizontal portion.

[0080] Also, the upper bolt may have an upper shaft portion inserted into the upper sleeve-shaped member through the load hole and an upper head portion having a diameter larger than that of the load hole of the load-bearing part and arranged above the load-bearing part. The upper tightening portion can vertically tighten the upper cylindrical portion and the upper flange portion when the upper shaft portion is screwed into the upper nut. In such a form, the horizontal portion is sandwiched between the bulged portion of the upper cylindrical portion and the upper flange portion around the upper connection hole, whereby the suspension tool is connected to the load-bearing part so as to be displaceable. The upper bolt 711 shown in FIGS. 7 and 8 and the like is an example of such an upper bolt.

[0081] (13) The metering container can include a first lower buffer portion that is an elastic body attached to at least one of the metering container and the suspension tool, a second lower buffer portion that is an elastic body arranged to be aligned with the first lower buffer portion in a predetermined direction, and a lower clamping portion that clamps the first lower buffer portion and the second lower buffer portion in this predetermined direction. One of the metering container or the suspension tool is sandwiched between the first lower buffer portion and the second lower buffer portion and thus connected to the other.

[0082] (14) In FIG. 5 and the like, a form combining the above (2) and the above (13) is exemplified, but the metering container may have the configuration of the above (2) alone or the configuration of the above (13) alone. The "predetermined direction" in the above (2) may be referred to as the "first direction", and the "predetermined direction" in the above (13) may be referred to as the "second direction".

[0083] (15) Similar to the first and second upper buffer portions, the first and second lower buffer portions may form a sleeve-type member. In other words, the metering container may include a lower cylindrical portion including the second lower buffer portion and a lower flange portion as the first lower buffer portion that expands radially outward at one end of the lower cylindrical portion. The lower sleeve-type member is arranged such that the height direction of the lower cylindrical portion is parallel to the predetermined direction in the above (13).

[0084] The lower sleeve-type member 62 illustrated in FIG. 5 and the like is an elastic body having a lower cylindrical portion 62a and a lower flange portion 62b that expands radially outward at one end of the lower cylindrical portion 62a. The lower cylindrical portion 62a includes the second lower buffer portion, and the lower flange portion 62b corresponds to the first lower buffer portion. The lower sleeve-type member 62 is arranged such that the height direction of the lower cylindrical portion 62a (that is, the direction of the through hole of the lower sleeve-type member 62) is parallel to the predetermined direction in the above (13).

[0085] (16) The lower tightening part may have a bolt-nut structure as illustrated in FIG. 5 and the like. The illustrated lower tightening part 72 has a lower bolt 721 and a lower nut 722. The lower bolt 721 is inserted into the lower cylindrical part 62a, and the lower nut 722 is fitted onto the lower bolt 721. By screwing the lower bolt 721 into the lower nut 722, the lower tightening part 72 is configured to tighten the lower cylindrical part 62a and the lower flange part 62b in the predetermined direction of (13) above.

[0086] In this embodiment, by tightening the lower tightening part 72, the lower cylindrical part 62a bulges in the radially outer direction thereof, that is, in a direction perpendicular to the predetermined direction, and the measuring container 4 (particularly the handle 43) is sandwiched between the bulged part (second lower buffer part) of the lower cylindrical part 62a and the lower flange part 62b, thereby being connected to the suspension tool 5.

[0087] (17) However, the first lower buffer part and the second lower buffer part may be individual members instead of being included in a single sleeve-type member as in the embodiment shown in FIG. 5 and the like.

[0088] (18) Regarding "one of the measuring container or the suspension tool is connected to the other by being sandwiched between the first lower buffer part and the second lower buffer part" in (13) above, in the embodiment shown in FIG. 5 and the like, the measuring container 4 (particularly the handle 43) is exemplified as the member sandwiched between the first lower buffer part and the second lower buffer part. However, the member to be sandwiched may be the suspension tool 5. In other words, the suspension tool, the first lower buffer part, the measuring container, and the second lower buffer part may be arranged in this order in a predetermined direction, or the second lower buffer part, the suspension tool, the first lower buffer part, and the measuring container may be arranged in this order in a predetermined direction.

[0089] (19) The lower tightening part is not limited to a bolt-nut structure, and other members such as clips may be used as long as the measuring container and the suspension tool can be connected by tightening the first and second lower buffer parts.

[0090] (20) In the above (13), the statement that the first lower buffer part is "attached to at least one of the measuring container and the suspension tool" is not limited to attachment by a bolt-nut structure such as the lower clamping part 72. For example, the first lower buffer part may be sandwiched between the measuring container and the suspension tool by other means such as a clip, or may be fixed to at least one of these members by adhesion or the like.

[0091] (21) The lower nut 722 is embedded in the lower cylindrical part 62a of the lower sleeve-type member 62 in the form shown in FIG. 5 and the like, but is not limited thereto, and may be provided as a member separate from the first and second lower buffer parts.

[0092] (22) As the predetermined direction in the above (13), the horizontal direction is exemplified in the form shown in FIG. 5 and the like, but the present invention is not limited thereto, and it may be the vertical direction or other directions.

[0093] (23) For the connection between the measuring container and the suspension tool, a container hole and a lower connection hole in the predetermined direction of the above (13) may be formed in the measuring container and the suspension tool, respectively. Further, it is preferable that the suspension tool has a vertical portion extending in the vertical direction, and a lower connection hole is formed in the vertical portion.

[0094] In FIG. 5 and the like, this predetermined direction is the horizontal direction, the measuring container 4 has container holes 43a and 43b having a horizontal axis, and a plate portion 52 which is a part of the vertical portion of the suspension tool 5 has a lower connection hole having a horizontal axis in the plate portion 52.

[0095] (24) The lower sleeve-type member may be arranged such that the lower cylindrical part penetrates the measuring container in the container hole in the above (23). In this case, it is desirable that the diameter of the container hole is formed larger than the diameter of the lower connection hole. Further, the lower flange portion is arranged between the suspension tool and the measuring container.

[0096] Further, the lower bolt may have a lower shaft portion inserted into the lower sleeve-shaped member through the lower connection hole, and a lower head portion having a diameter larger than that of the lower connection hole and disposed on the side opposite to the lower flange portion with the hanging tool interposed therebetween. The lower tightening portion can horizontally tighten the lower cylindrical portion and the lower flange portion when the lower shaft portion is screwed into the lower nut. The measuring container is sandwiched between the bulged portion of the lower cylindrical portion and the lower flange portion around the container hole, whereby the measuring container is displaceably connected to the hanging tool. The lower bolt 721 shown in FIGS. 7 and 8 etc. is an example of such a lower bolt.

[0097] (25) In the form shown in FIG. 5 etc., the measuring container 4 includes a container body 41 and a handle 43, and the handle 43 and the hanging tool 5 are connected by the lower tightening portion 72. However, this is only an example of the form of connecting the measuring container and the hanging tool, and the handle 43 is not an essential component in fixing the measuring container 4. For example, a container hole which is a through hole for connection may be provided at a position on the side wall of the container body 41 where the object to be measured is less likely to leak, and the measuring container 4 may be fixed through this container hole.

[0098] (26) When the above (2) and the above (13) are combined, the first direction which is the predetermined direction of the above (2) and the second direction which is the predetermined direction of the above (13) are preferably different. Further, when the second direction is perpendicular to the first direction, a more uniform buffering effect can be obtained in all directions. When the first direction and the second direction are "perpendicular", these directions are preferably included in the same plane, but may be in a twisted relationship. Also, it is preferable that one of the first direction or the second direction is the vertical direction and the other is the horizontal direction. The form shown in FIG. 5 etc. is an example of such a configuration, where the first direction is the vertical direction and the second direction is the horizontal direction.

[0099] When the first direction is the vertical direction and the second direction is the horizontal direction, the suspension tool may include a horizontal portion provided in the horizontal direction and a vertical portion extending downward in the vertical direction from the horizontal portion. An upper connection hole (having an axis) in the vertical direction is formed in the horizontal portion, and a lower connection hole (having an axis) in the horizontal direction is formed in the vertical portion, so that the horizontal portion of the suspension tool is connected to the load-bearing portion, and the vertical portion is connected to the weighing container. The suspension tool 5 shown in FIG. 5 and the like is an example of such a suspension tool. However, as described above, the suspension tool is not limited to this shape.

[0100] (28) Forms obtained by arbitrarily combining the above-described various forms are also included in the disclosure of the present application.

Industrial Applicability

[0101] As described above, the technology of the present disclosure can be used in a weighing device for weighing an object to be weighed, and further in a packer scale or the like.

Explanation of Reference Numerals

[0102] 1 Weighing device 11 Holding frame 14 Support plate 16 Control box 2 Load cell 3 Load-bearing portion 3a First load hole 3b Second load hole 4 Weighing container 41 Container body 42 Eaves portion 43 Handle 43a Container hole 5 Suspension tool 51 Cylindrical portion (a part of the vertical portion) 51a Hollow portion 53 Annular portion (horizontal portion) 53a Upper connection hole 52 Plate portion (a part of the vertical portion) 52a Lower connection hole 61 Upper sleeve-type member (first upper buffer portion, second upper buffer portion) 61a upper cylindrical part (second upper buffer part) 61b upper flange part (first upper buffer part) 62 lower sleeve-type member (first lower buffer part, second lower buffer part) 62a lower cylindrical part (second lower buffer part) 62b lower flange part (first lower buffer part) 71 upper tightening part 711 upper bolt 711a upper head 711b upper shaft part 712 upper nut 72 lower tightening part 721 lower bolt 722 lower nut 721a lower head 721b lower shaft part

Claims

1. A load cell, a load loading part for transmitting a load to the load cell, a weighing container capable of accommodating an object to be weighed, a suspension tool for suspending the weighing container from the load loading part, a first upper buffer part which is an elastic body attached to at least one of the load loading part and the suspension tool, a second upper buffer part which is an elastic body arranged so as to be aligned with the first upper buffer part in a predetermined direction, an upper tightening part for tightening the first upper buffer part and the second upper buffer part in the predetermined direction, and one of the load loading part or the suspension tool is sandwiched between the first upper buffer part and the second upper buffer part and is thus connected to the other, a weighing device.

2. The weighing device according to Claim 1, having an upper cylindrical part including the second upper buffer part and an upper flange part as the first upper buffer part that expands radially outward at one end of the upper cylindrical part, and an upper sleeve-type member in which the height direction of the upper cylindrical part is arranged parallel to the predetermined direction, the upper tightening part having an upper bolt inserted into the upper cylindrical part and an upper nut fitted to the upper bolt, the upper tightening part tightening the upper cylindrical part and the upper flange part in the predetermined direction by screwing the upper bolt into the upper nut, by tightening the upper tightening part, the upper cylindrical part bulges radially outward, one of the load loading part or the suspension tool is sandwiched between the bulged part of the upper cylindrical part and the upper flange part and is thus connected to the other, a weighing device.

3. The weighing device according to Claim 2, wherein the predetermined direction is the vertical direction, a vertical load hole is formed in the load loading part, the suspension tool is arranged below the load loading part and has a horizontal part extending in the horizontal direction and a vertical part extending vertically downward from the horizontal part, an upper connecting hole in the vertical direction is formed in the horizontal part, the upper sleeve-type member is arranged such that the upper flange part is located between the load loading part and the horizontal part and the upper cylindrical part penetrates the horizontal part at the upper connecting hole, the upper bolt has an upper shaft part inserted into the upper sleeve-type member through the load hole and an upper head part having a diameter larger than that of the load hole of the load loading part and arranged above the load loading part, The upper clamping portion vertically clamps the upper cylindrical portion and the upper flange portion when the upper shaft portion is screwed into the upper nut. The horizontal portion is sandwiched between the bulged portion of the upper cylindrical portion and the upper flange portion around the upper connecting hole. Measuring device.

4. A load cell; A load loading portion that transmits a load to the load cell; A measuring container capable of accommodating an object to be measured; A hanging tool that hangs the measuring container on the load loading portion; A first lower buffer portion that is an elastic body attached to at least one of the measuring container and the hanging tool; A second lower buffer portion that is an elastic body arranged to be aligned with the first lower buffer portion in a predetermined direction; And a lower clamping portion that clamps the first lower buffer portion and the second lower buffer portion in the predetermined direction. One of the measuring container or the hanging tool is sandwiched between the first lower buffer portion and the second lower buffer portion and thus connected to the other. Measuring device.

5. The measuring device according to claim 4, Comprising a lower cylindrical portion including the second lower buffer portion, and a lower flange portion as the first lower buffer portion that extends radially outward at one end of the lower cylindrical portion, and a lower sleeve-shaped member in which the height direction of the lower cylindrical portion is arranged parallel to the predetermined direction. The lower clamping portion has a lower bolt inserted into the lower cylindrical portion and a lower nut fitted to the lower bolt. The lower clamping portion vertically clamps the lower cylindrical portion and the lower flange portion when the lower bolt is screwed into the lower nut. Due to the clamping of the lower clamping portion, the lower cylindrical portion bulges radially outward. One of the measuring container or the hanging tool is sandwiched between the bulged portion of the lower cylindrical portion and the lower flange portion and thus connected to the other. Measuring device.

6. The measuring device according to claim 5, The predetermined direction is a horizontal direction. The hanging tool is formed with a horizontal lower connecting hole. The measuring container is formed with a horizontal container hole. The lower sleeve-shaped member is arranged such that the lower flange portion is located between the measuring container and the hanging tool, and the lower cylindrical portion penetrates the measuring container at the container hole. The lower bolt has a lower shaft portion inserted into the lower sleeve-shaped member through the lower connection hole, and a lower head portion having a diameter larger than that of the lower connection hole and disposed on the side opposite to the lower flange portion with the suspension tool interposed therebetween. The lower tightening portion horizontally tightens the lower cylindrical portion and the lower flange portion when the lower shaft portion is screwed into the lower nut. The metering container is sandwiched between the bulged portion of the lower cylindrical portion and the lower flange portion around the container hole. Metering device.

7. The metering device according to claim 1, wherein the predetermined direction is the first direction, and the metering device includes a first lower buffer portion which is an elastic body attached to at least one of the metering container and the suspension tool, a second lower buffer portion which is an elastic body arranged to be aligned with the first lower buffer portion in a second direction different from the first direction, and a lower tightening portion for tightening the first lower buffer portion and the second lower buffer portion in the second direction. One of the metering container or the suspension tool is sandwiched between the first lower buffer portion and the second lower buffer portion and thus connected to the other. Metering device.

8. The metering device according to claim 7, wherein the second direction is perpendicular to the first direction. Metering device.

9. The metering device according to claim 8, wherein the first direction or the second direction is the vertical direction. Metering device.

Images