Metering device

Abstract

Provided is a technology that makes it possible to reduce the time required for metering while achieving high metering accuracy. A metering device 1 comprises suspension elements 5 for connecting a load application part 3 for transmitting a load to a load cell 2 and a metering container 4 in which an object to be subjected to metering is placed. Upper sleeve-type members 61 and lower sleeve-type members 62, which are elastic bodies, are interposed in connection positions between the suspension elements 5 and the load application part 3, and between the metering container 4 and the suspension elements 5, so that the impact load can be mitigated and vibrations can be attenuated quickly.

Description

Weighing device

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

[0002] Conventionally, in order to divide powder or granular objects into fixed amounts or to measure the flow rate of the objects between processes, a weighing device has been used that includes a load cell, a weighing container, a load application unit that transmits a load to the load cell, and a suspender that suspends the weighing container from the load application unit. In the weighing device, the object is dropped into the weighing container, and the load on the weighing container is measured by the load cell.

[0003] If the load application unit and the weighing container are completely fixed, there is a concern that the shock load generated when the object is inserted may cause malfunction of the device. Therefore, in order to mitigate this shock load, it has been proposed to allow a certain amount of oscillation between the load application unit and the weighing container. However, since large oscillations affect the weighing results, it is necessary to quickly converge the oscillations in order to achieve both weighing accuracy and a reduction in the weighing time.

[0004] For example, Patent Document 1 proposes a suspending device having a ball bearing. This suspending device includes a first member attached to a shaft-shaped load applying portion and a second member attached to the first member and fixed to a weighing container. The first member has a first hole and a second hole, each of which has a ball bearing fitted therein. The first member is rotatably attached to the load applying portion by inserting the ball bearing in the first hole. The second member is rotatably attached to the first member by inserting a rotation shaft provided at one end of the second member into the ball bearing in the second hole of the first member. The load applying portion and the first hole have horizontal axes, and the second hole has an axis that is horizontal and perpendicular to the first hole. The other end of the second member is fixed to the weighing container with a bolt.

[0005] According to Patent Document 1, the following effects are claimed: Because the first member can swing about the axis of the load-applying unit, and the second member fixed to the weighing container can swing about an axis perpendicular to the axis of the load-applying unit relative to the first member, swinging caused by impact is quickly contained by the weight of the weighing container and the object, and the low-friction ball bearings allow the first and second members to quickly return to the position where the weighing container is at its lowest point. This allows for weighing to be performed in a short time while improving weighing accuracy.

[0006] JP 2013-108825 A

[0007] Conventional techniques have not been able to adequately meet the demand for rapid convergence of vibrations in a measuring container and high-precision measurement.

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

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

[0010] A weighing container according to a first aspect of the present invention includes a load cell, a load applying section that transmits a load to the load cell, a weighing container capable of accommodating an object to be weighed, a suspender that suspends the weighing container from the load applying section, a first upper buffer section that is an elastic body attached to at least one of the load applying section and the suspender, a second upper buffer section that is an elastic body arranged to be aligned with the first upper buffer section in a first direction, an upper tightening section that tightens the first upper buffer section and the second upper buffer section in the first direction, and a fastening section attached to at least one of the weighing container and the suspender. the first lower buffer portion being an elastic body that is attached to the first lower buffer portion, a second lower buffer portion being an elastic body that is arranged in line with the first lower buffer portion in a second direction different from the first direction, and a lower tightening portion that tightens the first lower buffer portion and the second lower buffer portion in the second direction; one of the load-bearing portion or the hanging device is connected to the other by being sandwiched between the first upper buffer portion and the second upper buffer portion, and one of the measuring container or the hanging device is connected to the other by being sandwiched between the first lower buffer portion and the second lower buffer portion.

[0011] A weighing container according to a second aspect of the present invention comprises a load cell, a load applying section that transmits a load to the load cell, a weighing container capable of containing an object to be weighed, and a suspending device that suspends the weighing container from the load applying section. The suspending section has a horizontal lower connecting hole, and the weighing container has a horizontal container hole. The weighing device further comprises a lower sleeve-type member having a lower cylindrical section that is an elastic body and is arranged to pass through the weighing container in the container hole, and a lower flange section that extends radially outward at one end of the lower cylindrical section and is positioned between the weighing container and the suspending device. The weighing device further comprises a lower tightening section that has a lower bolt inserted into the lower cylindrical section and a lower nut that engages with the lower bolt. The lower bolt has a lower shank that is inserted into the lower sleeve-shaped member through the lower connecting hole, and a lower head that has a diameter larger than the lower connecting hole and is positioned on the opposite side of the lower flange with the hanger in between. When the lower shank is screwed into the lower nut, the lower fastening part horizontally fastens the lower cylindrical part and the lower flange part, and when the lower fastening part is tightened, the lower cylindrical part bulges outward in the radial direction, and the measuring container is sandwiched between the bulged part of the lower cylindrical part and the lower flange part around the container hole, thereby connecting the measuring container to the hanger.

[0012] The first and second upper buffer sections, or the first and second lower buffer sections, allow the weighing container to displace relative to the load-bearing section within the elastic range of these buffer sections. In other words, while shock loads can be absorbed, the range of displacement is more limited than in conventional devices, reducing the shaking that occurs with the displacement. Furthermore, these buffer sections reduce the time it takes for the shaking to attenuate. Therefore, according to the present invention, it is possible to reduce the time required for weighing while achieving high weighing accuracy.

[0013] FIG. 1 is a partially exploded perspective view of a weighing device. FIG. 2 is an exploded perspective view showing a suspender that connects a load applying section and a weighing container in the weighing device, and the structure around it. FIG. 3 is a side view showing the suspender and the structure around it. FIG. 4 is a front view showing the suspender and the structure around it. FIG. 5 is a cross-sectional view showing the suspender in FIG. 4 and the structure around it. FIG. 6 is a perspective view of the suspender. FIG. 7 is a cross-sectional view showing an upper tightening section and the structure around it. FIG. 8 is a cross-sectional view of the upper sleeve-shaped member compressed by the upper tightening section in FIG. 7 tightening the upper sleeve-shaped member. FIG. 9 is a block diagram showing the schematic configuration of the weighing device.

[0014] In the following, exemplary embodiments are 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 y-axis.

[0015] 1. Weighing Device 1 Fig. 1 is a partially exploded perspective view of the weighing device 1. Figs. 2 to 4 are drawings showing the structure of the suspender 5 and its surroundings, which connects the load application unit 3 and the weighing container 4 disposed below it in the weighing device 1, with Fig. 2 being an exploded perspective view, Fig. 3 being a side view, and Fig. 4 being a front view. Fig. 5 is an enlarged cross-sectional view of the suspender 5 and its surroundings in Fig. 4. For ease of explanation, the load application unit 3 is shown by a dotted line in Fig. 3.

[0016] 1 and 2, the weighing device 1 of this embodiment includes a holding frame 11, a load cell 2, a load applying section 3, a weighing container 4, a hanger 5, an upper sleeve-type member 61, a lower sleeve-type member 62, an upper fastening section 71, a lower fastening section 72, a supply gate 8, and a discharge gate (not shown). When the supply gate 8 opens and closes, an object is introduced from a storage tank into the weighing container 4. When the discharge gate opens, the introduced object is discharged out of the weighing container 4. The weighing device 1 transmits the load of the weighing container 4 into which the object has been introduced to the load cell 2, and weighs the object based on the output of the load cell 2.

[0017] The holding frame 11 has 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.

[0018] The rear member 12 and the front member 13 are arranged to face each other in the z-axis direction and with their longitudinal directions 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 so that the bottom of the weighing container 4 held by the holding frame 11 does not contact the installation surface of the weighing device 1 but floats in the air. The lower parts of the rear member 12 and the front member 13 may be connectable to another device. In this way, the installation surface of the weighing device 1 may be a flat surface, or may be another device provided below the weighing device 1. Here, the other device may be a device that bags the objects after weighing, or a device that processes the objects after weighing.

[0019] The two support plates 14 are flat plate-like members that face each other in the x-axis direction and are arranged so 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. In other words, the rear member 12, the front member 13, and the two support plates 14 give the holding frame 11 a generally rectangular shape in plan view. The support plate 14 has two through holes, a first through hole 14a and a second through hole 14b, aligned in the y-axis direction and in the longitudinal direction (i.e., the z-axis direction). A hanging device 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 hanging device 5 so that the hanging device 5 can be displaced horizontally. The holding frame 11 may also include additional structures, such as ribs that reinforce the support plates 14, angles that secure the respective components, and bolts and nuts, as appropriate.

[0020] The load cell cover 15 is provided on the support plate 14 so as to cover the load cell 2 from above and the sides. Of the two load cell covers 15, only the load cell cover 15 at the back of the page in the x-axis direction is shown in Fig. 1, and the load cell cover 15 at the front is not shown.

[0021] The control box 16 houses the control device described below, and is provided on its front with an input device that accepts instructions and inputs from the user, a display unit that displays the weighing results to the user, and the like.

[0022] In this embodiment, the load cell 2 is a so-called beam type. The load cell 2 is disposed on the support plate 14 between the first through-hole 14a and the second through-hole 14b so that its longitudinal direction is parallel to the longitudinal direction of the support plate 14 (i.e., the z-axis direction). The load cell 2 is fixed to the support plate 14 at its first end (the left end in FIG. 3 ) with a bolt. 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, which is transmitted via the load application unit 3 disposed thereon, into an electrical signal and outputs the signal to a control device, which will be described later.

[0023] The load applying unit 3 transmits a load to the load cell 2. The load applying unit 3 is a flat member and is placed on the load cell 2 so that its longitudinal direction is parallel to the longitudinal direction of the load cell 2 (i.e., the z-axis direction). Near both ends of the load applying unit 3, a first load hole 3a and a second load hole 3b are provided, which penetrate the load applying unit 3 vertically and are coaxial with the two first through holes 14a and second through holes 14b of the support plate 14. A weighing container 4 is suspended from the load applying unit 3 by a suspender 5 via the first load hole 3a and the second load hole 3b. An upper spacer 22 is inserted between the second end of the load cell 2 and the load applying unit 3. Another through hole is formed in the load applying unit 3 at a position corresponding to the upper spacer 22, and the load applying unit 3 and the upper spacer 22 are fixed to the second end of the load cell 2 by bolts passing through the through holes.

[0024] The weighing container 4 can temporarily accommodate weighing objects introduced from above. The weighing container 4 includes a container body 41, a visor 42, and a handle 43. The container body 41 has a roughly rectangular parallelepiped outer shape with 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 top of the container body 41 is open, and a discharge port (not shown) is formed at the bottom. The visor 42 is formed to extend obliquely downward and outward around the entire upper edge of the container body 41. Furthermore, walls are formed from the outer edge of the visor 42 so as to extend downward and parallel to each of the four side walls of the container body 41. Of these four walls, two wall portions parallel to the y-z plane are handles 43. In other words, the weighing container 4 includes the container body 41 and handles 43 provided parallel to both side surfaces of the container body 41 in the x-axis direction. Each handle 43 has two through-holes in the x-axis direction. These through-holes are referred to as the "first container hole" and the "second container hole," and are designated by the reference numerals 43a and 43b, respectively. The entire measuring container 4, i.e., the container body 41, the eaves 42, and the handle 43, are integrally formed.

[0025] In this specification, "integrally formed" includes cases where two or more parts are integrally formed by casting or bending, or cases where two or more parts are formed separately and then integrated by welding, or cases where they are formed by a combination of these techniques. "Integratedly formed" can also be rephrased as two or more parts being "fixed so that they cannot be attached or detached from each other."

[0026] The suspending device 5 will be described with reference to Figure 6 and other figures. Figure 6 is a perspective view of the suspending device 5. The suspending device 5 has a cylindrical portion 51, a plate portion 52, and an annular portion (horizontal portion) 53 that is provided at the upper end of the cylindrical portion 51 and has a horizontal planar direction. The hole in the annular portion 53 is called the upper connecting hole and is given the symbol 53a. The upper connecting hole 53a and the cylindrical portion 51 are arranged coaxially, and this axis is illustrated as "A".

[0027] The outer diameter of annular portion 53 is the same as the outer diameter of tubular portion 51, and the inner diameter of annular portion 53, i.e., the diameter of upper connecting hole 53a, is smaller than the inner diameter of tubular portion 51. By having annular portion 53, suspender 5 has an opening at its upper end that is smaller than the inner diameter of tubular portion 51 and communicates with the interior of tubular portion 51. Annular portion 53 is formed integrally with tubular portion 51.

[0028] Plate portion 52 is disposed on axis A and parallel to axis A at the lower end of cylindrical portion 51. Plate portion 52, together with cylindrical portion 51, constitutes a vertical portion extending in the vertical direction. A lower connecting hole 52a, which is a through hole, is formed in plate portion 52. Lower connecting hole 52a is disposed on axis A and so that axis B of lower connecting hole 52a is perpendicular to axis A. Plate portion 52 is also formed integrally with cylindrical portion 51. In other words, the hanging device 5 is formed integrally as a whole. Specifically, plate portion 52 in this embodiment has an angular U-shaped notch 52c at its upper end, and the lower end of cylindrical portion 51 fits into notch 52c. Cylindrical portion 51 and notch 52c are welded together.

[0029] The two suspenders 5 are arranged below one load application section 3 so that their axes A coincide with the axes of the first load hole 3a and the second load hole 3b, respectively. Furthermore, these suspenders 5 are arranged so that their axes B coincide with the axes of the first container hole 43a and the second container hole 43b, which are aligned 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 other figures. The upper sleeve-shaped member 61 is an elastic body having an upper cylindrical portion 61a and an upper flange portion 61b extending radially outward from one end of the upper cylindrical portion 61a. In other words, 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. The upper sleeve-shaped member 61 has a through-hole extending in the height direction of the 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 of the cylinder (i.e., the direction perpendicular to the radial direction), regardless of the vertical direction. The upper flange portion 61b is disposed between the load-applying portion 3 and the annular portion 53 of the suspending device 5, and the upper cylindrical portion 61a is disposed so as to pass through the annular portion 53 at the upper connecting 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 connecting hole 53a so that the end opposite the upper flange portion 61b reaches the back side of the annular portion 53, i.e., the inside of the tubular portion 51.

[0031] The lower sleeve-shaped member 62 has a structure similar to that of the upper sleeve-shaped member 61. Specifically, the lower sleeve-shaped member 62 is an elastic body having a lower cylindrical portion 62a and a lower flange portion 62b provided at one end of the lower cylindrical portion 62a and extending radially outward from the end of the lower cylindrical portion 62a. The lower flange portion 62b is disposed between the plate portion 52 and the handle 43, and the lower cylindrical portion 62a is disposed in the first container opening 43a so as to pass through the handle 43. In other words, the height of the lower cylindrical portion 62a is greater than the thickness of the handle 43, and the end opposite the lower flange portion 62b is inserted into the first container opening 43a so as to reach 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 Fig. 5, Fig. 7, etc. Fig. 7 is a cross-sectional view showing the upper tightening portion 71 and the structure around it. Note that washers are omitted from the cross-sectional views of Fig. 5 and the like.

[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 shank portion 711b. The upper nut 712 is formed to fit onto the upper shank portion 711b. The upper nut 712 is embedded in the upper cylindrical portion 61a near the end opposite the upper flange portion 61b, with the inner circumferential surface of the upper nut 712 (i.e., the threaded portion) exposed from the inner circumferential 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-shaped member 61. 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 similar configuration to the upper tightening portion 71. The lower tightening portion 72 includes a lower bolt 721 and a lower nut 722. The lower bolt 721 includes a lower head portion 721a and a lower shank portion 721b. The lower nut 722 is formed to fit onto the lower shank portion 721b. The lower nut 722 is embedded in the lower cylindrical portion 62a near the end opposite the lower flange portion 62b, with the inner circumferential surface (i.e., the threaded portion) of the lower nut 722 exposed from the inner circumferential 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-shaped member 62. The lower head portion 721a has a diameter larger than the diameter of the lower connecting hole 52a.

[0035] The connection between the suspending device 5 and the weighing container 4, and the connection between the suspending device 5 and the load applying section 3 will be described.

[0036] 2 to 5, the lower sleeve-type member 62 is positioned so that the lower cylindrical portion 62a passes through the handle 43 at the first container hole 43a and the lower flange portion 62b abuts against the handle 43 of the measuring container 4 from its outside (the side opposite the container body 41). The hanger 5 is positioned so that the plate portion 52 abuts against the outer side of the lower flange portion 62b and so that the lower connecting hole 52a is coaxial with the first container hole 43a, i.e., coaxial with the through-hole of the lower sleeve-type member 62. The lower shaft portion 721b passes through the lower connecting hole 52a and is further inserted into the lower sleeve-type member 62 and screwed into the lower nut 722. The lower head portion 721a abuts against the outer side of the plate portion 52 around the lower connecting hole 52a. In this way, the lower clamping portion 72 clamps the lower sleeve-shaped member 62 in the x-axis (horizontal) direction, and the suspender 5 and the measuring container 4 are connected together.

[0037] Similarly, the hanging devices 5 and measuring containers 4 are connected by the lower fastening portions 72 at the second container hole 43b aligned in the z-axis direction with the first container hole 43a, and at the first container hole 43a and second container hole 43b on the opposite side in the x-axis direction. In this way, four hanging devices 5 are connected to one measuring container 4.

[0038] Two hanging devices 5 adjacent to each other in the z-axis direction are inserted from below into the first through-hole 14a and the second through-hole 14b, respectively, so that the upper ends of the cylindrical portions 51 protrude above the support plate 14. The load cell 2 is disposed between the two protruding cylindrical portions 51.

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

[0040] The load applying section 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 they are coaxial with the through holes of the two upper sleeve-type members 61. The upper shaft portion 711b passes through the load applying section 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 section 3 around the first load hole 3a. In this way, the upper tightening portion 71 tightens the upper sleeve-type member 61 in the y-axis (vertical) direction, and the suspender 5 and the load applying section 3 are connected.

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

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

[0043] For the sake of convenience, the lower connecting portion has been described above, but the assembly order is not limited to this.

[0044] The holding of the measuring container 4 and the hanging device 5 by the upper sleeve-type member 61 and the lower sleeve-type member 62 will be described below with reference to Figures 7 and 8. Figure 8 is a cross-sectional view of the upper sleeve-type member 61 when it is compressed by the upper tightening portion 71 of Figure 7 tightening the upper sleeve-type member 61. However, for ease of explanation, Figure 8 shows a front view of the upper sleeve-type member 61 instead of a cross-section.

[0045] In FIG. 7 , the upper shaft portion 711b is fitted into the upper nut 712, but because the screwing depth is small, the upper cylindrical portion 61a of the upper sleeve-shaped member 61 is not compressed and remains in its natural state. As the screwing depth 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 decreases. This shortens the distance between the upper nut 712 and the upper flange portion 61b, and as shown in FIG. 8 , the upper cylindrical portion 61a is compressed in its height direction, i.e., in the y-axis direction. As a result, the upper cylindrical portion 61a expands radially. Furthermore, the upper flange portion 61b is sandwiched between the load-bearing portion 3 and the tubular portion 51, so its position is fixed and it is compressed in the y-axis direction. In this way, the annular portion 53 is sandwiched in the y-axis direction around the upper connecting hole 53a between the bulging portion of the upper cylindrical portion 61a and the upper flange portion 61b.

[0046] Although not shown, at the connection point of the lower tightening portion 72, the lower sleeve-shaped member 62 is compressed in the height direction of its lower cylindrical portion 62a, i.e., in the x-axis direction. Specifically, as the amount of threading 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 decreases. This shortens the distance between the lower nut 722 and the lower flange portion 62b, compressing the lower cylindrical portion 62a in its height direction, i.e., in the x-axis direction. As a result, the lower cylindrical portion 62a expands radially. Furthermore, the lower flange portion 62b is fixed in position and compressed in the x-axis direction by being sandwiched between the plate portion 52 and the handle 43. Thus, the handle 43 of the weighing 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 opening 43a. The same applies to the second container opening 43b.

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

[0048] When an object to be weighed is placed in the weighing container 4, an impact load acts on the weighing container 4. At this time, the weighing container 4 can be displaced relative to the suspending device 5 within the elastic range of the lower sleeve-type member 62. In particular, the lower sleeve-type member 62 allows for displacement between the weighing container 4 and the suspending device 5 in all directions, including the shear direction, compression direction, and suspending direction, i.e., three-dimensional displacement. As a result, the impact load is alleviated. Furthermore, because the lower sleeve-type member 62 absorbs the impact between the weighing container 4 and the suspending device 5, vibrations of the weighing container 4 are quickly damped in all directions. Furthermore, due to the presence of the lower sleeve-type member 62, vibrations transmitted from the weighing container 4 to the suspending device 5 are smaller than vibrations generated in the weighing container 4.

[0049] Furthermore, the suspending device 5 can be displaced relative to the load applying unit 3 within the elastic range of the upper sleeve-type member 61. In particular, the upper sleeve-type member 61 allows displacement between the suspending device 5 and the load applying unit 3 in all directions, including the shear direction, compression direction, and suspension direction, i.e., three-dimensional displacement. As a result, impact loads are further alleviated. Furthermore, since the upper sleeve-type member 61 absorbs impact between the suspending device 5 and the load applying unit 3, vibrations of the suspending device 5 are quickly attenuated in all directions. Furthermore, due to the presence of the upper sleeve-type member 61, vibrations transmitted from the suspending device 5 to the load applying unit 3 are even smaller than vibrations transmitted from the weighing container 4 to the suspending device 5.

[0050] As described above, the elasticity of the upper sleeve-shaped member 61 and the lower sleeve-shaped member 62 allows for displacement between the weighing container 4 and the suspending device 5, and displacement between the suspending device 5 and the load applying unit 3. As a result, the impact load acting on the suspending device 5, the load applying unit 3, and the load cell 2 is reduced, thereby suppressing the occurrence of defects such as distortion or damage to these members.

[0051] At the same time, the range of these displacements is limited to the elastic range of the upper sleeve-type member 61 and the lower sleeve-type member 62, and vibrations are quickly damped, so the time from inserting the object to be weighed to calculating the weighing result based on the output result of the load cell 2 is shorter than in conventional technology, while high weighing accuracy can be achieved.

[0052] Furthermore, the vibrations that are ultimately transmitted to the load cell 2 are significantly smaller than the vibrations of the weighing container 4, which also contributes to achieving both weighing accuracy and shortening the time required for weighing.

[0053] Each of the upper sleeve-shaped member 61 and the lower sleeve-shaped member 62 alone has a cushioning effect of reducing impact loads and damping vibrations in three dimensions in the shear, compression, and hanging directions. In this embodiment, the orientation of the upper sleeve-shaped member 61 (first direction: y-axis direction) and the orientation of the lower sleeve-shaped member 62 (second direction: x-axis direction) are not parallel but intersect, intersect within the same plane, and are even perpendicular, thereby achieving a higher cushioning effect in all directions. It is also preferable that either the first direction or the second direction is vertical (i.e., the other is horizontal), and since the first direction is vertical, this embodiment also satisfies this condition.

[0054] The upper sleeve-type member 61 and the lower sleeve-type member 62 also have the effect of increasing the uniformity of the load applied from the weighing container 4 to the load cell 2. When applying a load to the load cell 2 via multiple suspenders 5 as in this embodiment, or when multiple load cells 2 are provided, it is desirable to apply the load in a nearly uniform balance within the load cell 2 and between the load cells 2. If the position of the weighing container 4 were completely fixed relative to the load application unit 3 and the weighing container 4 could not be displaced relative to the load application unit 3, achieving the above-mentioned balance would require extremely precise dimensioning and positioning of each component. Alternatively, it is possible to correct load variations due to dimensional errors by providing the suspender 5 with a structure that allows its length to be adjusted during assembly, but this would require high assembly precision and would increase the number of components required for length adjustment, resulting in a complex structure. In contrast to this, in this embodiment, by placing an upper sleeve-type member 61 and a lower sleeve-type member 62 between the hanging device 5 and the load-applying section 3 and between the weighing container 4, dimensional errors due to processing tolerances can be absorbed without adjusting the length, and a nearly equal load balance can be achieved.

[0055] The composition, physical properties, shape, dimensions, etc. of the upper sleeve-type member 61 and the lower sleeve-type member 62 can be appropriately changed as long as they have the above-mentioned cushioning effect. Furthermore, the upper sleeve-type member 61 and the lower sleeve-type member 62 are selected so as to obtain a preferable vibration damping rate (frequency ratio) depending on the natural frequency of each member in the weighing device and the performance required of the weighing device.

[0056] For example, the upper sleeve member 61 and the lower sleeve member 62 may be made of a known elastic material such as rubber, and known vibration-isolating rubber is preferably used.

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

[0058] 2. Control of the Weighing Device 1 Weighing by the weighing device 1 will be described with further reference to Figure 9. Figure 9 is a block diagram showing the general 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 results, and a control device 94 that controls the operation of each unit 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 a calculation unit 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 closes it after a certain time has passed or when the weighing objects have been fed up to a predetermined weight (feeding time T1), thereby feeding the weighing objects from the storage tank into the weighing container 4. After the supply gate 8 closes, that is, after the feeding is complete and the vibrations have subsided (waiting time T2), the weight calculation unit 943 reads the output value from the load cell 2 and calculates the weight of the weighing objects based on that output value. After the supply gate 8 opens, that is, after the feeding time and waiting time (T1 + T2) have passed since the start of feeding, the discharge control unit 942 opens the discharge gate to discharge the weighing objects from the weighing container 4. By repeating the above operations, the weighing device 1 can intermittently weigh the weighing objects.

[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] Time T2 is the time required for the vibration to subside to a level at which the desired weighing accuracy can be achieved. As described above, in the weighing device 1, vibration and impact are absorbed by the elastic upper sleeve-type member 61 and the lower sleeve-type member 62, so it is possible to shorten time T2 while achieving the same weighing accuracy, or to improve weighing accuracy while maintaining time T2.

[0063] It should be noted that techniques such as calibration used in conventional weighing devices can also be preferably applied to the present invention.

[0064] 3. Other Embodiments, etc. As described above, the above-described embodiments have been described as examples of the technology disclosed in this application. However, the technology disclosed herein is not limited to these embodiments and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made as appropriate. Furthermore, the components described in the above-described embodiments can be combined to create new embodiments. Furthermore, the components described in the accompanying drawings and detailed description may include not only components essential for solving the problem, but also components that are not essential for solving the problem in order to exemplify the technology. Therefore, the fact that these non-essential components are described in the accompanying drawings or detailed description should not be interpreted as immediately determining that these non-essential components are essential.

[0065] For example, the present application also discloses the following techniques:

[0066] (1) The present invention is applicable to a weighing container having a load cell, a load application section that transmits a load to the load cell, a weighing container that can accommodate an object to be weighed, and a hanging device that hangs the weighing container from the load application section.

[0067] (2) The weighing container may include a first upper buffer part that is an elastic body attached to at least one of the load applying part and the suspender, a second upper buffer part that is an elastic body arranged to be aligned with the first upper buffer part in a predetermined direction, and an upper fastening part that fastens the first upper buffer part and the second upper buffer part in the predetermined direction. One of the load applying part and the suspender is connected to the other by being sandwiched between the first upper buffer part and the second upper buffer part.

[0068] (3) The measuring container may include an upper sleeve-type member having an upper cylindrical portion including a second upper buffer portion and an upper flange portion serving as a first upper buffer portion, the upper cylindrical portion extending radially outward from one end of the upper cylindrical portion. The upper sleeve-type member is arranged such that the height direction of the upper cylindrical portion is parallel to the predetermined direction described in (2) above. The upper sleeve-type member 61 illustrated in FIG. 5 and other figures is an elastic body having an upper cylindrical portion 61a and an upper flange portion 61b extending radially outward from 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 (i.e., the direction of the through-hole of the upper sleeve-type member 61) is parallel to the predetermined direction described in (2) above.

[0069] (4) The upper tightening portion may have a bolt-nut structure, as exemplified in Fig. 5 etc. 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 engaged with the upper bolt 711. When the upper bolt 711 is threaded into the upper nut 712, the upper tightening portion tightens the upper cylindrical portion 61a and the upper flange portion 61b in the predetermined direction described in (2) above.

[0070] In this embodiment, tightening of the upper tightening portion 71 causes the upper cylindrical portion 61a to bulge radially outward, i.e., in a direction perpendicular to the specified direction, and the hanging device 5 is connected to the load-bearing portion 3 by being sandwiched between the bulging portion of the upper cylindrical portion 61a (second upper buffer portion) and the upper flange portion 61b.

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

[0072] (6) Regarding the above (2) "One of the load applying portion and the suspender is connected to the other by being sandwiched between the first upper buffer portion and the second upper buffer portion," in the embodiment shown in FIG. 5 etc., the suspender 5 is exemplified as a member sandwiched between the first upper buffer portion and the second upper buffer portion. However, the sandwiched member may also be the load applying portion 3. In other words, the load applying portion, the first upper buffer portion, the suspender, and the second upper buffer portion may be arranged in this order in a predetermined direction, or the first upper buffer portion, the load applying portion, the second upper buffer portion, and the suspender may be arranged in this order in a predetermined direction.

[0073] (7) The upper tightening portion is not limited to a bolt-nut structure, and may be other components such as clips as long as it can connect the load-bearing portion and the hanging device by tightening the first and second upper buffer portions.

[0074] (8) In (2) above, the phrase "attached to at least one of the load-bearing part and the suspender" does not mean that the first upper buffer part is attached by a bolt-nut structure such as the upper fastening part 71, but rather that the first upper buffer part may be sandwiched between the load-bearing part and the suspender by other means such as a clip, or may be fixed to at least one of these components by adhesive or the like.

[0075] (9) In the embodiment shown in Figure 5, etc., the upper nut 712 is embedded in the upper cylindrical portion 61a of the upper sleeve-type member 61, but this is not limited to this and the upper nut 712 may be provided as a separate member from the first and second upper buffer portions.

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

[0077] (11) For connecting the load application part and the suspending tool, the load application part and the suspending tool may be formed with a load hole and an upper connecting hole in the predetermined direction described above, respectively. Furthermore, when the predetermined direction is the vertical direction, the suspending tool may have a horizontal portion extending horizontally below the load application part and a vertical portion extending vertically from the horizontal portion, and the horizontal portion may be formed with a vertical upper connecting hole.

[0078] 5 and other figures, the predetermined direction is the vertical direction, the load application portion 3 has a first load hole 3a and a second load hole 3b with vertical axes, and the suspender 5 has an annular portion 53 with an upper connecting hole 53a as a horizontal portion, and a cylindrical portion 51 and a plate portion 52 as vertical portions. This shape makes the suspender 5 less likely to deform even when subjected to the load of the weighing container 4 and the object to be weighed, and allows for maintaining weighing accuracy even when repeated weighing is performed. However, the horizontal and vertical portions are not limited to these shapes; for example, the horizontal and vertical portions may each be flat and combined to form an L-shape.

[0079] (12) The upper sleeve-shaped member may be arranged so that the upper cylindrical portion passes through the horizontal portion of the upper connecting hole in (10) above. In this case, it is desirable that the diameter of the upper connecting hole be larger than the diameter of the load hole. The upper flange portion is arranged between the load-bearing portion and the horizontal portion.

[0080] The upper bolt may also have an upper shank portion inserted into the upper sleeve-shaped member through the load hole, and an upper head portion having a diameter larger than the load hole of the load application portion and positioned above the load application portion. The upper fastening portion can vertically fasten the upper cylindrical portion and the upper flange portion together by threading the upper shank portion into the upper nut. In this configuration, the horizontal portion is sandwiched between the bulging portion of the upper cylindrical portion and the upper flange portion around the upper connecting hole, thereby displaceably connecting the suspending device to the load application portion. Upper bolt 711 shown in Figures 7 and 8 is an example of such an upper bolt.

[0081] (13) The weighing container may include a first lower buffer portion that is an elastic body attached to at least one of the weighing container and the hanger, 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 fastening portion that fastens the first lower buffer portion and the second lower buffer portion in the predetermined direction. Either the weighing container or the hanger is connected to the other by being sandwiched between the first lower buffer portion and the second lower buffer portion.

[0082] (14) Figure 5 and other figures illustrate an example of a configuration combining the above (2) and (13), but the measuring container may have the above configuration (2) alone or the above configuration (13) alone. The "predetermined direction" in the above (2) may be called the "first direction," and the "predetermined direction" in the above (13) may be called the "second direction."

[0083] (15) The first and second lower buffer portions may be configured as sleeve-type members, similar to the first and second upper buffer portions. In other words, the measuring container may include a lower sleeve-type member having a lower cylindrical portion including the second lower buffer portion and a lower flange portion serving as the first lower buffer portion, extending radially outward from one end of the lower cylindrical portion. The lower sleeve-type member is arranged so that the height direction of the lower cylindrical portion is parallel to the predetermined direction described in (13) above.

[0084] The lower sleeve-shaped member 62 illustrated in Fig. 5 and other figures is an elastic body having a lower cylindrical portion 62a and a lower flange portion 62b that extends radially outward from one end of the lower cylindrical portion 62a. The lower cylindrical portion 62a includes a second lower buffer portion, and the lower flange portion 62b corresponds to the first lower buffer portion. The lower sleeve-shaped member 62 is positioned so that the height direction of the lower cylindrical portion 62a (i.e., the direction of the through hole of the lower sleeve-shaped member 62) is parallel to the predetermined direction (13) described above.

[0085] (16) The lower tightening portion may have a bolt-nut structure, as exemplified in Fig. 5 etc. The illustrated lower tightening portion 72 has a lower bolt 721 and a lower nut 722. The lower bolt 721 is inserted into the lower cylindrical portion 62a, and the lower nut 722 is engaged with the lower bolt 721. When the lower bolt 721 is threaded into the lower nut 722, the lower tightening portion 72 tightens the lower cylindrical portion 62a and the lower flange portion 62b in the predetermined direction described above in (13).

[0086] In this embodiment, tightening the lower tightening portion 72 causes the lower cylindrical portion 62a to expand radially outward, i.e., in a direction perpendicular to the specified direction, and the weighing container 4 (particularly the handle 43) is connected to the hanging device 5 by being sandwiched between the expanded portion (second lower buffer portion) of the lower cylindrical portion 62a and the lower flange portion 62b.

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

[0088] (18) Regarding the above paragraph (13) of the present invention, "One of the weighing container and the hanging device is connected to the other by being sandwiched between the first lower buffer part and the second lower buffer part," in the embodiment shown in Fig. 5 and other figures, the weighing 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 sandwiched member may also be the hanging device 5. In other words, the hanging device, the first lower buffer part, the weighing container, and the second lower buffer part may be arranged in this order in a predetermined direction, or the second lower buffer part, the hanging device, the first lower buffer part, and the weighing container may be arranged in this order in a predetermined direction.

[0089] (19) The lower tightening portion is not limited to a bolt-nut structure, and may be other components such as clips as long as it can connect the measuring container and the hanging device by tightening the first and second lower buffer portions.

[0090] (20) In (13) above, the phrase "attached to at least one of the weighing container and the hanging device" does not mean that the first lower buffer portion is attached by a bolt-nut structure such as the lower fastening portion 72, but rather that the first lower buffer portion may be sandwiched between the weighing container and the hanging device by other means such as a clip, or may be fixed to at least one of these components by adhesive or the like.

[0091] (21) In the embodiment shown in Figure 5, etc., the lower nut 722 is embedded in the lower cylindrical portion 62a of the lower sleeve-type member 62, but this is not limited to this and the lower nut 722 may be provided as a separate member from the first and second lower buffer portions.

[0092] (22) In the embodiment shown in FIG. 5 and the like, the predetermined direction in (13) above is exemplified as the horizontal direction, but the present invention is not limited to this, and the predetermined direction may be the vertical direction or another direction.

[0093] (23) To connect the measuring container and the suspending device, the measuring container and the suspending device may be formed with a container hole and a lower connecting hole in the predetermined direction as described above in (13). It is also preferable that the suspending device has a vertical portion extending vertically, and that the lower connecting hole is formed in the vertical portion.

[0094] In Figure 5 etc., this specified direction is the horizontal direction, the measuring container 4 has container holes 43a and 43b with horizontal axes, and the plate portion 52, which is part of the vertical portion of the hanging device 5, has a lower connecting hole with a horizontal axis on the plate portion 52.

[0095] (24) The lower sleeve-shaped member may be arranged so that the lower cylindrical portion passes through the measuring container at the container hole in (23) above. In this case, it is desirable that the diameter of the container hole be larger than the diameter of the lower connecting hole. In addition, the lower flange portion is arranged between the hanging device and the measuring container.

[0096] The lower bolt may also have a lower shank that is inserted into the lower sleeve-shaped member through the lower connecting hole, and a lower head that has a larger diameter than the lower connecting hole and is positioned on the opposite side of the lower flange with the hanging device sandwiched between them. The lower fastening portion can horizontally fasten the lower cylindrical portion and the lower flange by threading the lower shank into the lower nut. The measuring container is sandwiched between the bulging portion of the lower cylindrical portion and the lower flange around the container hole, thereby displaceably connecting the measuring container to the hanging device. Lower bolt 721 shown in Figures 7 and 8 is an example of such a lower bolt.

[0097] (25) In the embodiment shown in Figure 5 etc., the weighing container 4 includes a container body 41 and a handle 43, and the handle 43 and the hanging device 5 are connected by a lower tightening portion 72. However, this is merely one example of a form for connecting the weighing container and the hanging device, and the handle 43 is not an essential component for fixing the weighing container 4. For example, a container hole, which is a through-hole for connection, may be provided in the side wall of the container body 41 at a position where the object to be measured is unlikely to leak, and the weighing container 4 may be fixed via this container hole.

[0098] (26) When (2) and (13) are combined, it is preferable that the first direction, which is the predetermined direction in (2), and the second direction, which is the predetermined direction in (13), are different. Furthermore, by having the second direction perpendicular to the first direction, a more uniform cushioning effect can be obtained in all directions. When the first and second directions are "perpendicular," it is preferable that these directions are included in the same plane, but they may be in a twisted relationship. It is also preferable that one of the first and second directions is vertical and the other is horizontal. The configuration shown in Figure 5 and other figures is an example of such a configuration, in which the first direction is vertical and the second direction is horizontal.

[0099] (27) When the first direction is the vertical direction and the second direction is the horizontal direction, the suspending device may include a horizontal portion provided in the horizontal direction and a vertical portion extending vertically downward from the horizontal portion. An upper connecting hole (having an axis) in the vertical direction is formed in the horizontal portion, and a lower connecting hole (having an axis) in the horizontal direction is formed in the vertical portion, so that the horizontal portion of the suspending device is connected to the load-applying portion and the vertical portion is connected to the measuring container. The suspending device 5 shown in Figure 5 etc. is an example of such a suspending device. However, as mentioned above, the suspending device is not limited to this shape.

[0100] (28) The disclosure of this application also includes embodiments obtained by arbitrarily combining the above-described embodiments.

[0101] As described above, the technology of the present disclosure can be used in weighing devices that weigh objects to be weighed, as well as packer scales and the like.

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

Claims

1. A device comprising: a load cell; a load application section which transmits a load to the load cell; a weighing container capable of containing an object to be weighed; a hanging device which suspends the weighing container from the load application section; a first upper buffer section which is an elastic body attached to at least one of the load application section and the hanging device; a second upper buffer section which is an elastic body arranged to be aligned with the first upper buffer section in a first direction; an upper tightening section which tightens the first upper buffer section and the second upper buffer section in the first direction; a first lower buffer section which is an elastic body attached to at least one of the weighing container and the hanging device; a second lower buffer section which is an elastic body arranged to be aligned with the first lower buffer section in a second direction different from the first direction; and a lower tightening section which tightens the first lower buffer section and the second lower buffer section in the second direction; A weighing device, wherein one of the load-bearing part or the hanging device is connected to the other by being sandwiched between the first upper buffer part and the second upper buffer part, and one of the weighing container or the hanging device is connected to the other by being sandwiched between the first lower buffer part and the second lower buffer part.

2. A weighing device as described in claim 1, comprising an upper sleeve-type member having an upper cylindrical portion including the second upper buffer portion, and an upper flange portion as the first upper buffer portion extending radially outward at one end of the upper cylindrical portion, and the height direction of the upper cylindrical portion is arranged parallel to the first direction, the upper fastening portion having an upper bolt inserted into the upper cylindrical portion and an upper nut engaging with the upper bolt, the upper fastening portion fastening the upper cylindrical portion and the upper flange portion in the first direction as the upper bolt is screwed into the upper nut, the upper fastening portion causing the upper cylindrical portion to bulge radially outward as a result of the upper fastening portion being fastened, and one of the load application portion or the hanging device being connected to the other by being sandwiched between the bulging portion of the upper cylindrical portion and the upper flange portion.

3. A weighing device according to claim 2, wherein the first direction is a vertical direction, the load application section is formed with a vertical load hole, the suspending device is disposed below the load application section and has a horizontal section extending horizontally and a vertical section extending vertically downward from the horizontal section, the horizontal section is formed with a vertical upper connecting hole, the upper sleeve-type member is disposed such that the upper flange section is located between the load application section and the horizontal section and the upper cylindrical section passes through the horizontal section at the upper connecting hole, the upper bolt has an upper shank section inserted into the upper sleeve-type member through the load hole and an upper head section having a diameter larger than the load hole of the load application section and disposed above the load application section, and the upper tightening section tightens the upper cylindrical section and the upper flange section in the vertical direction by screwing the upper shank section into the upper nut, The horizontal portion is sandwiched between a bulging portion of the upper cylindrical portion and the upper flange portion around the upper connecting hole.

4. A weighing device comprising: a load cell; a load application section for transmitting a load to the load cell; a weighing container capable of accommodating an object to be weighed; and a suspending device for suspending the weighing container from the load application section, wherein the suspending device is formed with a horizontal lower connecting hole, and the weighing container is formed with a horizontal container hole, and the weighing device further comprises: a lower sleeve-type member having: a lower cylindrical section which is an elastic body arranged to pass through the weighing container at the container hole; and a lower flange section which extends radially outward at one end of the lower cylindrical section and is positioned between the weighing container and the suspending device; and a lower tightening section which has a lower bolt inserted into the lower cylindrical section and a lower nut which fits onto the lower bolt, A weighing device in which the lower bolt has a lower shank portion that is inserted into the lower sleeve-type member through the lower connecting hole, and a lower head portion that has a larger diameter than the lower connecting hole and is positioned on the opposite side of the lower flange portion across the hanging device, and the lower fastening portion horizontally fastens the lower cylindrical portion and the lower flange portion when the lower shank portion is screwed into the lower nut, and the lower cylindrical portion bulges radially outward when the lower fastening portion is tightened, and the measuring container is connected to the hanging device by being sandwiched between the bulging portion of the lower cylindrical portion and the lower flange portion around the container hole.

5. A weighing device according to claim 1, wherein the second direction is perpendicular to the first direction.

6. A weighing device according to claim 5, wherein the first direction or the second direction is a vertical direction.

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