CN113232167A - Mounting structure of pressure type sensor and metering device with same - Google Patents

Abstract

The invention provides a mounting structure of a pressure type sensor and a metering device with the same, wherein the mounting structure comprises: the mounting seat is suitable for being connected to a structure to be weighed, and a first mounting hole is formed in the bottom of the mounting seat; the limiting plate is arranged below the mounting seat and is abutted against the bottom wall of the mounting seat, a connecting column is arranged on the limiting plate and penetrates through the first mounting hole, and the lower surface of the limiting plate is suitable for being matched with the pressure type sensor; the fastening assembly is arranged on the connecting column and used for connecting the limiting plate on the mounting seat, wherein the size of the first mounting hole is larger than the sectional size of the connecting column, and one or two of the contact surfaces of the mounting seat and the limiting plate are arc-shaped surfaces. The technical scheme of the invention overcomes the defect that the mounting structure of the pressure type sensor in the prior art has a complex structure.

Description

Mounting structure of pressure type sensor and metering device with same

Technical Field

The invention relates to the technical field of concrete mixing equipment, in particular to a mounting structure of a pressure type sensor and a metering device with the same.

Background

In the production process of the concrete mixing plant, cement and admixture are conveyed to a weighing hopper through equipment such as a screw conveyor and the like for weighing, and the powder is generally weighed in a mass metering mode. At present, based on the reasons of installation, shipping, size and the like, the powder metering mode of the domestic concrete mixing plant generally adopts a pressure type sensor which adopts three-point arrangement so as to ensure that the powder is uniformly arranged on the same plane. The pressure type sensing and metering device mainly comprises a metering frame, a pressure type sensor, a metering hopper and an installation block. The mounting block is welded on a metering frame, and the metering frame is a frame steel structure for bearing a metering hopper. In order to install the pressure type sensing and metering structure, a mounting seat is welded on the hopper body of the metering hopper, one end of the pressure type sensor is connected with the mounting block, and the other end of the pressure type sensor is connected with the mounting seat. However, the mounting structure of the pressure sensor has the following problems:

1. in the manufacturing process, the mounting seat and the mounting block are separately processed, so that the dimensional accuracy of the relative positions of the mounting seat and the mounting block is poor; 2. the deformation of the hopper body of the measuring hopper causes the position degree difference and the parallelism between the central hole of the bottom surface of the mounting seat and the mounting column of the sensor to be poor. After the weighing sensor is assembled in an ideal state, the weighing sensor is prevented from being acted by the acting force in the non-gravity direction in order to ensure the metering precision. However, due to the above defects, the phenomena of misalignment and dead jacking between the mounting seat hole and the center of the sensor assembling column can occur during field mounting, so that the mounting is not in place, additional lateral force is generated on the pressure type sensor, the pressure type sensor transmits an error signal, the metering accuracy is influenced, and the quality of the finished concrete is finally influenced. In order to ensure the installation requirement, the installation block has to be cut off and the position has to be found again and then the welding has to be carried out again in the field adjustment, which seriously affects the appearance quality and the production efficiency of the product.

In order to solve the above problems, some solutions in the prior art have provided a position adjustment mechanism in the material metering device, so as to eliminate the situation that the assembly of the pressure sensor is not in place due to processing or deformation. For example, in chinese patent No. CN111765955A, a screw nut mechanism and a guide rail mechanism are used to adjust the relative positions of a load cell and a load cell mounting seat, so as to ensure that the two can be aligned accurately. For another example, in chinese patent No. CN103557922B, a thrust bearing is provided between a boss and a mounting block with holes, so that the pressure sensor can rotate after being mounted on the mounting block with holes, thereby reducing the mounting difficulty and improving the mounting accuracy.

However, in both of the above solutions, a driving mechanism or a transmission mechanism (a motor, a guide rail, and a thrust bearing) needs to be introduced between the original weighing hopper and the weighing hopper supporting frame.

Disclosure of Invention

Therefore, the present invention is to provide a mounting structure of a pressure sensor and a metering device having the same, which overcome the defect of complex structure of the mounting structure of the pressure sensor in the prior art.

In order to solve the above problems, the present invention provides a mounting structure of a pressure type sensor, including: the mounting seat is suitable for being connected to a structure to be weighed, and a first mounting hole is formed in the bottom of the mounting seat; the limiting plate is arranged below the mounting seat and is abutted against the bottom wall of the mounting seat, a connecting column is arranged on the limiting plate and penetrates through the first mounting hole, and the lower surface of the limiting plate is suitable for being matched with the pressure type sensor; the fastening assembly is arranged on the connecting column and used for connecting the limiting plate on the mounting seat, wherein the size of the first mounting hole is larger than the sectional size of the connecting column, and one or two of the contact surfaces of the mounting seat and the limiting plate are arc-shaped surfaces.

Optionally, the gap between the first mounting hole and the connecting post is in the range of 5 to 15 millimeters.

Optionally, the connecting column has an external thread section, the fastening assembly includes a pressing plate and a fastening nut, a second mounting hole is provided on the pressing plate, the pressing plate is sleeved outside the connecting column through the second mounting hole, the fastening nut is provided on the external thread section, wherein the size of the pressing plate is larger than that of the first mounting hole.

Optionally, the surface of the limiting plate facing the mounting seat is an arc-shaped surface, and the surface is a spherical crown surface.

Optionally, a connecting hole is formed in the lower surface of the limiting plate, and the connecting hole is connected with the assembling column of the pressure type sensor.

Optionally, the mounting seat comprises a side plate, a bottom plate and a reinforcing plate, the reinforcing plate is connected between the side plate and the bottom plate, the side plate is suitable for being connected with a structure to be weighed, and the first mounting hole is formed in the bottom plate.

Optionally, the mounting structure further comprises a sensor mounting plate, the pressure sensor being fixedly connected to the sensor mounting plate, the sensor mounting plate being adapted to be connected to an external support structure.

Optionally, the structure to be weighed is a weighing hopper and the external support structure is a weighing hopper frame.

The invention also provides a metering device which comprises a metering hopper frame, a metering hopper and a pressure type sensor, wherein the metering hopper is arranged in the metering hopper frame, the pressure type sensor is connected between the metering hopper and the metering hopper frame through a mounting structure, and the mounting structure is the mounting structure.

Optionally, the pressure sensor is a plurality of pressure sensors, and the plurality of pressure sensors are circumferentially arranged around the weighing hopper.

The invention has the following advantages:

by utilizing the technical scheme of the invention, because the size of the first mounting hole is larger than the sectional size of the connecting column, when the limiting plate and the mounting seat are mounted, if the horizontal positions of the limiting plate and the mounting seat have deviation, the relative position of the connecting column in the first mounting hole can be adjusted, and the connecting column is fixed by the fastening assembly, so that smooth mounting is ensured. When there is the condition of nonparallel between the bottom surface of limiting plate and mount pad, because there is the arcwall face in the contact surface between the two, consequently can be in some contact between limiting plate and the mount pad to adjust the depth of parallelism error, prevent to press the condition that the formula sensor produced the yawing force, guarantee measurement accuracy. The structure can ensure the installation precision and the measurement precision of the pressure type sensor on the basis of not adding other structures, so that the whole structure of the metering device is simple, the cost is low, and other potential fault points are not increased. Therefore, the technical scheme of the invention overcomes the defect that the mounting structure of the pressure type sensor in the prior art has a complex structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows a schematic structural view of a metering device of the present invention;

fig. 2 shows an enlarged schematic view at a in fig. 1 (i.e., a mounting structure of a pressure type sensor);

FIG. 3 shows an enlarged schematic view at B in FIG. 2;

FIG. 4 is a top schematic view of the mounting block, the piezo sensor, and the sensor mounting plate of the mounting structure of FIG. 2 in cooperation;

FIG. 5 is a schematic diagram showing the relative positions of the connecting post and the first mounting hole of the mounting structure of FIG. 2;

FIG. 6 shows a schematic side view of a limiting plate of the mounting structure of FIG. 2;

FIG. 7 shows a schematic top view of the platen of the mounting structure of FIG. 2; and

fig. 8 shows a schematic top view of the metering device of fig. 1.

Description of reference numerals:

10. a mounting seat; 11. a first mounting hole; 12. a side plate; 13. a base plate; 14. a reinforcing plate; 20. a limiting plate; 21. connecting columns; 211. an external threaded section; 22. connecting holes; 30. a fastening assembly; 31. pressing a plate; 311. a second mounting hole; 32. fastening a nut; 40. a sensor mounting plate; 100. a pressure sensor; 101. assembling the column; 200. a measuring hopper; 300. a dosing hopper frame.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the mounting structure of the pressure sensor of the present embodiment includes a mounting seat 10, a limiting plate 20, and a fastening assembly 30. Wherein, mount pad 10 is suitable for the connection on waiting to weigh the structure, and the bottom of mount pad 10 is provided with first mounting hole 11. The stopper plate 20 is disposed below the mount 10, and the stopper plate 20 abuts against the bottom wall of the mount 10. The limiting plate 20 is provided with a connecting column 21, the connecting column 21 penetrates through the first mounting hole 11, and the lower surface of the limiting plate 20 is suitable for being matched with the pressure type sensor 100. The fastening assembly 30 is disposed on the connection post 21 and serves to connect the stopper plate 20 to the mount 10. Further, the size of the first mounting hole 11 is larger than the sectional size of the connecting column 21, and either one or both of the contact surfaces of the mounting seat 10 and the limiting plate 20 are arc-shaped surfaces.

Utilize the technical scheme of this embodiment, because the size of first mounting hole 11 is greater than the cross-sectional dimension of spliced pole 21, consequently when limiting plate 20 and mount pad 10 were installed, if there is the deviation in the horizontal position of the two, can adjust the relative position of spliced pole 21 in first mounting hole 11 to it is fixed through fastening components 30, guarantee smooth installation. When the condition that the bottom surfaces of the limiting plate 20 and the mounting seat 10 are not parallel exists, the contact surface between the limiting plate 20 and the mounting seat 10 has an arc-shaped surface, so that point contact exists between the limiting plate 20 and the mounting seat 10, the parallelism error is adjusted, the condition that the counter-pressure type sensor 100 generates lateral force is prevented, and the measurement precision is ensured. The structure can ensure the installation precision and the measurement precision of the pressure type sensor on the basis of not adding other structures, so that the whole structure of the metering device is simple, the cost is low, and other potential fault points are not increased. Therefore, the technical scheme of the embodiment overcomes the defect that the mounting structure of the pressure type sensor in the prior art has a complex structure.

It should be noted that, the size of the first mounting hole 11 is larger than the cross-sectional size of the connecting column 21, that is, after the connecting column 21 passes through the first mounting hole 11, a gap exists between the connecting column 21 and the first mounting hole 11, so that the connecting column 21 can be adjusted in position in the first mounting hole 11. As can be seen from fig. 4, the first mounting hole 11 in this embodiment is a circular hole, and the connecting rod 21 is a cylinder, so that the diameter of the first mounting hole 11 is larger than the outer diameter of the connecting rod 21. Of course, in some embodiments, not shown, the cross-section of the connection post 21 may be square, hexagonal, or other regular/irregular shapes, or other shapes other than circular, as well as the shape of the first mounting hole 11. At this time, the size of the first mounting hole 11 is larger than the sectional size of the connecting column 21, and a gap exists between the first mounting hole 11 and the connecting column 21, so that the effect that the connecting column 21 can be adjusted in the first mounting hole 11 can be achieved.

It should be noted that the arc-shaped surface refers to a convex arc-shaped surface in the middle. Specifically, if the mounting seat 10 is not parallel to the limiting plate 20, the two will have an included angle after contacting, and when the fastening assembly 30 is installed, the included angle will be converted into a lateral force to the pressing type sensor 100, thereby affecting the accuracy of the measuring structure. With the above-mentioned arc-shaped surface, even if the mounting seat 10 is not parallel with respect to the limiting plate 20, the arc-shaped surface can provide at least one point support at the contact point of the two, thereby preventing a lateral force from being applied to the pressure type sensor 100. "one or both of the contact surfaces of the mount seat 10 and the limit plate 20 are arc surfaces" means that the arc surfaces are arranged in a manner including: the surface of the mounting seat 10 facing the limiting plate 20 is an arc-shaped surface, or the surface of the limiting plate 20 facing the mounting seat 10 is an arc-shaped surface, or the surfaces of the mounting seat 10 and the limiting plate 20, which are in contact with each other, are arc-shaped surfaces.

It should be noted that, in the cantilever beam pressing sensor commonly used in the prior art, the structure thereof is composed of a front cantilever beam and a rear end fixed end. Wherein, the fixed end in rear end is equipped with the screw hole, fixes on outside bearing structure through the screw. The lower surface of the front cantilever beam is suspended, and the upper part of the cantilever beam is supported on a structure to be weighed through an assembly column. That is, in this embodiment, the lower surface of the limiting plate 20 is connected to the mounting post of the cantilever-pressure sensor.

As shown in fig. 4 to 7, in the solution of the present embodiment, the gap between the first mounting hole 11 and the connecting column 21 is in the range of 5 to 15 mm. Specifically, the first mounting hole 11 is a circular hole, and the connecting column 21 is a cylinder, that is, the diameter of the first mounting hole 11 is larger than the outer diameter of the connecting column 21 by a size in the range of 5 to 15 mm. The dotted circle line in fig. 5 represents the adjustable position of the connecting column 21, and it can be seen that the connecting column 21 can be adjusted in all directions in the horizontal direction, so as to adjust the horizontal installation error between the mounting seat 10 and the limiting plate 20, and avoid the misalignment between the mounting seat hole and the center of the sensor assembling column.

Of course, the gap range can be adjusted by those skilled in the art according to actual needs, and is not limited to the range of 5 to 15 mm. For example, the above range may be expanded or reduced.

As shown in fig. 3, 4 and 6, in the solution of the present embodiment, the connection column 21 has an external thread section 211, and the fastening assembly 30 includes a pressure plate 31 and a fastening nut 32. The pressing plate 31 is provided with a second mounting hole 311, the pressing plate 31 is sleeved outside the connecting column 21 through the second mounting hole 311, the pressing plate 31 is located on the inner side of the mounting seat 10, and the fastening nut 32 is arranged on the external thread section 211. Wherein the size of the pressure plate 31 is larger than that of the first mounting hole 11. As can be seen from fig. 3, after the fastening nut 32 is tightened, a downward fastening force is applied to the pressing plate 31, so that the upper surface of the position limiting plate 20 and the lower surface of the mounting seat 10 are tightly adhered to each other. It should be noted that the fastening assembly 30 may further include a connecting pad, which connects the pressure plate 31 and the fastening nut 32, so that the fastening force of the fastening nut 32 after being screwed is transmitted to the pressure plate 31, and the fastening and anti-loosening functions can be further provided. Since the fastening nut 32 has a size smaller than the hole diameter of the first mounting hole 11, the pressing plate 31 needs to be provided in this embodiment to prevent the fastening nut 32 from coming out downward from the first mounting hole 11. Of course, in some embodiments not shown, it is also possible to not provide the pressure plate 31 if the outer diameter of the fastening nut 32 is larger than the size of the first mounting hole 11.

It should be noted that the diameter of the second mounting hole 311 is larger than the outer diameter of the connecting column 21, so that a gap exists between the two. Specifically, when there is an error in the parallelism between the mount 10 and the limit plate 20, the gap allows the pressure plate 31 to have a certain inclination angle with respect to the connection post 21, so that only a downward pressing force is applied to the pressure plate 31 after the fastening nut 32 is tightened, thereby preventing a lateral force from being applied to the pressure sensor 100.

As shown in fig. 3, in the solution of the present embodiment, a surface of the position-limiting plate 20 facing the mount 10 is an arc surface, and the surface is a spherical crown surface. Specifically, the spherical crown surface described above enables a certain point on the spherical crown surface to provide support to the mount 10 above when there is a parallelism error between the retainer plate 20 and the mount 10, preventing the pressure sensor 100 from receiving a lateral force.

As shown in fig. 3, in the solution of the present embodiment, a connection hole 22 is provided on the lower surface of the position limiting plate 20, and the connection hole 22 is connected to the mounting post 101 of the pressure type sensor 100. Specifically, during assembly, the pressure sensor 100 is connected to an external support structure, the assembly post 101 of the pressure sensor 100 is connected to the connection hole 22 of the lower surface of the limiting plate 20, and the position of the structure to be weighed is adjusted to be below the structure. So that the connection post 21 of the position-limiting plate 20 passes upward through the first mounting hole 11 of the mounting seat 10, and finally the fastening assembly 30 is installed. When bearing, the weight of the structure to be weighed is transmitted to the assembling column 101 through the limiting plate 20, and then the weight is weighed through the pressure type sensor 100.

As shown in fig. 2, in the solution of the present embodiment, the mounting seat 10 includes a side plate 12, a bottom plate 13, and a reinforcing plate 14. The reinforcing plate 14 is connected between the side plate 12 and the bottom plate 13, the side plate 12 is adapted to be connected with a structure to be weighed, and the first mounting hole 11 is provided on the bottom plate 13. Specifically, the side plate 12 is a square plate, and the side plate 12 is attached to the surface of the structure to be weighed by welding or the like. One end of the bottom plate 13 is connected to the side plate 12, and the other end extends in a direction away from the side plate 12, and the bottom plate 13 and the side plate 12 are vertically arranged. The first mounting hole 11 is provided in the bottom plate 13, and the upper surface of the stopper plate 20 is in contact with the lower surface of the bottom plate 13. When the fastener assembly 30 is in place, the lower surface of the pressure plate 31 is in abutting contact with the upper surface of the base plate 13. In other embodiments, the reinforcing plate 14 may be provided in plurality. The reinforcing plate 14 has a triangular configuration and is connected between the side plates 12 and the bottom plate 13. Further, there are two reinforcing plates 14, and the two reinforcing plates 14 are respectively located on both sides of the bottom plate 13. The reinforcing plate 14 serves to secure the coupling strength between the side plates 12 and the bottom plate 13. The shape of each connecting plate in the mounting seat 10, such as the side plate 12, the bottom plate 13 or the reinforcing plate 14, is not limited, and may be square, triangular, trapezoidal or other polygonal shape.

As shown in fig. 2, in the solution of the present embodiment, the mounting structure further includes a sensor mounting plate 40, the pressure sensor 100 is fixedly connected to the sensor mounting plate 40, and the sensor mounting plate 40 is adapted to be connected to an external support structure. Specifically, an end of the cantilever-beam type pressure sensor facing away from the mounting post 101 is fastened to the sensor mounting plate 40 by two bolts, and the sensor mounting plate 40 is fixedly disposed (for example, by welding, fastening by a fastening member, or the like) on the external support structure, thereby enabling the pressure sensor 100 to be fixed on the external support structure.

As shown in fig. 8, in the solution of the present embodiment, the structure to be weighed is a weighing hopper 200, and the external supporting structure is a weighing hopper frame 300. Specifically, the weighing hopper 200 described above is used in a concrete mixing plant. Of course, it will be understood by those skilled in the art that the mounting structure for the piezo sensor is not limited to use in the hopper 200 and the concrete mixing station, and that other load-bearing structures requiring the use of a piezo sensor may be used.

As shown in fig. 1 and 8, the present embodiment further provides a weighing apparatus including a hopper frame 300, a hopper 200, and a pressure sensor 100. The weighing hopper 200 is disposed in the weighing hopper frame 300, and the pressure sensor 100 is connected between the weighing hopper 200 and the weighing hopper frame 300 by a mounting structure, which is the above-described mounting structure.

As shown in fig. 8, in the solution of the present embodiment, there are a plurality of pressure sensors 100, and the plurality of pressure sensors 100 are circumferentially disposed around the weighing hopper 200. Preferably, three piezo sensors 100 are wrapped around each hopper 200.

According to the above structure, the mounting structure of the pressure type sensor in the present embodiment has the following features:

the mounting structure of the present embodiment is composed of a mounting seat 10, a stopper plate 20, and a fastening assembly 30.

Wherein, a large-diameter adjusting hole (namely, the first mounting hole 11) is designed on the bottom plate of the mounting seat 10, and the diameter should be ensured within the adjusting range of 5-15mm according to the general mounting error experience. If size error occurs, the powder measuring hopper can be adjusted in a multi-way mode through the large-diameter mounting hole of the bottom plate, and therefore the problem that the center of the first mounting hole 11 and the center of the sensor assembling column 101 are not aligned is solved.

The bottom of the limiting plate 20 is provided with an opening (i.e., a connecting hole 22), the opening is tightly connected with an assembling column 101 on the cantilever end of the pressure sensor, and the bottom surface of the limiting plate 20 is in contact with a pressure bearing surface of the assembling column 101 to transmit pressure. The plane of one end of the limiting plate 20 far away from the assembling post 101 is welded with a threaded post (i.e. a connecting post 21), and the threaded post is connected with the first mounting hole 11 through a bolt. Meanwhile, the plane of the limiting plate 20 away from the assembling column 101 is designed to be an arc-shaped surface, and is used for adjusting the parallelism error with the mounting seat 10.

The pressing plate 31 of the fastening assembly 30 is designed with an opening (i.e. the second mounting hole 311), and the length direction of the pressing plate 31 should be larger than the diameter of the first mounting hole 11. After the position of the mounting seat 10 and the pressure type sensor 100 is determined, that is, after the mounting seat is determined and positioned with the threaded column of the limiting plate 20, the mounting seat is mounted and assembled with bolts according to the position on site.

When the pressure sensor 100 is installed, the pressure sensor is fixedly connected with the weighing hopper frame 300 through the sensor installation plate 40, and is tightly connected with the limit plate 20 through the connection hole 22. The hopper body of the measuring hopper 200 is hoisted to the upper side for alignment adjustment, generally, any two points in three-point connection can be assembled according to center alignment, if the assembly size of the third connecting point is out of tolerance, multidirectional adjustment can be carried out through the first mounting hole 11, and after the adjustment is in place, the measuring hopper body is fixedly connected with the fastening nut 32 through the pressing plate 31. Even if there is a dimension error caused by manufacturing, deformation and the like, the phenomenon that the first mounting hole 11 of the mounting seat 10 is not aligned with the center of the sensor mounting post 101 does not occur. Meanwhile, the arc-shaped surface of one end, far away from the assembling column, of the limiting plate 20 is in contact with the bottom plate of the mounting seat 10, the parallelism error of the mounting seat 10 is adjusted, and the problem that the center of the first mounting hole 11 of the mounting seat 10 is dead-pushed against the center of the sensor assembling column 101 can be solved.

According to the above structure, the mounting structure of the pressure type sensor in the present embodiment has the following advantages:

1. the structure is simple, the mechanical adjustment is realized, and the performance is more reliable;

2. the multidirectional adjustment can be realized, and the problem that the centers of the mounting seat and the mounting column head of the sensor in the existing structure are not aligned is solved;

3. the problem of dead jacking between a mounting seat hole and the center of a sensor assembling column is solved;

4. the assembly type structure is easy to manufacture and transport, and the field operation difficulty is low;

5. and hidden trouble is not newly added.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A mounting structure of a pressure type sensor, comprising:

the weighing device comprises a mounting seat (10) suitable for being connected to a structure to be weighed, wherein a first mounting hole (11) is formed in the bottom of the mounting seat (10);

the limiting plate (20) is arranged below the mounting seat (10), the limiting plate (20) is abutted to the bottom wall of the mounting seat (10), a connecting column (21) is arranged on the limiting plate (20), the connecting column (21) penetrates through the first mounting hole (11), and the lower surface of the limiting plate (20) is suitable for being matched with the pressure type sensor (100);

a fastening assembly (30) arranged on the connecting column (21) and used for connecting the limiting plate (20) on the mounting seat (10),

the size of the first mounting hole (11) is larger than the sectional size of the connecting column (21), and any one or two of contact surfaces of the mounting seat (10) and the limiting plate (20) are arc-shaped surfaces.

2. The mounting structure according to claim 1, wherein a gap between the first mounting hole (11) and the connecting column (21) is in a range of 5 to 15 mm.

3. The mounting structure according to claim 1 or 2, wherein the connecting column (21) has an external threaded section (211), the fastening assembly (30) comprises a pressing plate (31) and a fastening nut (32), a second mounting hole (311) is provided on the pressing plate (31), the pressing plate (31) is sleeved outside the connecting column (21) through the second mounting hole (311), the fastening nut (32) is provided on the external threaded section (211), and wherein the size of the pressing plate (31) is larger than that of the first mounting hole (11).

4. The mounting arrangement, as set forth in claim 1, characterized in that the surface of the retainer plate (20) facing the mounting seat (10) is an arc-shaped surface and is a spherical crown surface.

5. The mounting structure according to claim 1, wherein a lower surface of the stopper plate (20) is provided with a connection hole (22), and the connection hole (22) is connected with a fitting post (101) of the pressure type sensor (100).

6. The mounting structure according to claim 1, wherein the mounting seat (10) comprises a side plate (12), a bottom plate (13) and a reinforcing plate (14), the reinforcing plate (14) being connected between the side plate (12) and the bottom plate (13), the side plate (12) being adapted to be connected with the structure to be weighed, the first mounting hole (11) being provided on the bottom plate (13).

7. The mounting structure of claim 1, further comprising a sensor mounting plate (40), wherein the push-on sensor (100) is fixedly attached to the sensor mounting plate (40), and wherein the sensor mounting plate (40) is adapted to be attached to an external support structure.

8. The mounting structure according to claim 7, wherein the structure to be weighed is a weighing hopper (200) and the external support structure is a weighing hopper frame (300).

9. A weighing apparatus comprising a weighing hopper frame (300), a weighing hopper (200) and a pressure sensor (100), the weighing hopper (200) being arranged within the weighing hopper frame (300), the pressure sensor (100) being connected between the weighing hopper (200) and the weighing hopper frame (300) by a mounting structure, characterized in that the mounting structure is as claimed in any one of claims 1 to 8.

10. The metering device according to claim 9, wherein the pressure sensor (100) is provided in plurality, and the plurality of pressure sensors (100) are circumferentially arranged around the metering hopper (200).

Images