Sensor device and hanging scale with same

Abstract

The sensor device comprises a weighing sensor, a bearing beam, a suspension beam and a limiting mechanism, the top of the first end of the weighing sensor is connected with the bearing beam, the bottom of the second end of the weighing sensor is connected with the suspension beam, and the limiting mechanism comprises a limiting rod and a first limiting piece. The first end of the limiting rod is connected to the bearing beam, the second end of the limiting rod movably penetrates through the suspension beam, the second end of the limiting rod is provided with a first limiting piece, the first limiting piece is located below the suspension beam, and when the weighing weight exceeds the threshold value of the weighing sensor, the first limiting piece abuts against the bottom of the suspension beam to limit the deformation range of the weighing sensor. It is ensured that the weighing sensor works in a safe range, permanent damage and measurement errors are prevented when the weighing sensor exceeds the rated load, and therefore the measurement precision is improved, and the maintenance cost is effectively reduced.

Description

A sensor device and a hanging scale having the same. Technical Field

[0001] This utility model relates to the field of electronic weighing technology, and in particular to a sensor device and a hanging scale having the same. Background Technology

[0002] A hanging scale (also known as a hook scale, hanging weighing scale, etc.) is a weighing instrument that measures the mass of an object by suspension. Its typical structure includes a hanging component, a scale body, a loading device, a casing, and connecting parts. Among these, the scale body, as the core functional module, integrates components such as a load cell, electronic circuitry, and a display instrument. When the weight exceeds its load-bearing capacity, it can easily cause the load cell to overload, reducing measurement accuracy and potentially leading to permanent damage. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a sensor device and a hanging scale having the same.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A sensor device includes a load cell, a load-bearing beam, a suspension beam, and a limiting mechanism. The top of a first end of the load cell is connected to the load-bearing beam, and the bottom of a second end of the load cell is connected to the suspension beam. The limiting mechanism includes a limiting rod and a first limiting member. The first end of the limiting rod is connected to the load-bearing beam, and the second end of the limiting rod is movably inserted through the suspension beam. The second end of the limiting rod is provided with the first limiting member, which is located below the suspension beam. When the weighing weight exceeds the threshold of the load cell, the first limiting member abuts against the bottom of the suspension beam.

[0006] Furthermore, the weighing sensors are bolted to the load-bearing beam and the suspension beam, respectively.

[0007] Furthermore, a gasket is provided at the connection between the weighing sensor and the suspension beam, and a gasket is provided at the connection between the weighing sensor and the load-bearing beam.

[0008] Furthermore, the first end of the limiting rod is movably inserted through the bearing beam, and the first end of the limiting rod is provided with a second limiting member, the bottom end of the second limiting member abutting the top of the bearing beam.

[0009] Furthermore, the limiting rod is located on one side of the second end of the weighing sensor.

[0010] This utility model also provides a hanging scale, including a scale body, a hanging mechanism and a weighing pan suspension mechanism. The hanging mechanism is connected to the scale body. A receiving cavity is formed inside the scale body. A sensor device as described above is installed in the receiving cavity. The bottom of the suspension beam is connected to the weighing pan suspension mechanism.

[0011] Furthermore, the weighing pan suspension mechanism includes a suspension rod, a suspension arm, and a tray. One end of the suspension rod is connected to the suspension beam, and the other end is connected to the suspension arm. The bottom end of the suspension arm is connected to the tray.

[0012] Furthermore, a ball head is provided at the bottom of the suspension rod, and the suspension rod is spherically connected to the top of the suspension arm.

[0013] Furthermore, the scale body includes a front shell and a rear shell that are spliced ​​together, a control board is provided in the receiving cavity, a display screen electrically connected to the control board is provided on the front shell, and the weighing sensor is electrically connected to the control board.

[0014] Furthermore, the scale body is also equipped with an image sensor and a printer that are electrically connected to the control board.

[0015] The beneficial effects of this utility model are:

[0016] 1. The present invention discloses a sensor device, including a load cell, wherein the top of the first end of the load cell is connected to a load-bearing beam and the bottom of the second end is connected to a suspension beam, the suspension beam being used to suspend the item to be weighed; and a limiting rod, wherein the first end of the limiting rod is connected to the load-bearing beam and the second end of the limiting rod is movably inserted through the suspension beam, the second end of the limiting rod also having a first limiting component. When the weighing weight exceeds the threshold of the load cell, the first limiting component abuts against the bottom of the suspension beam to limit the deformation range of the load cell, ensuring that the load cell operates within a safe range, preventing permanent damage and measurement errors when exceeding the rated load, thereby improving measurement accuracy and effectively reducing maintenance costs.

[0017] 2. The sensor device proposed in this utility model has gaskets at the connection between the load cell and the suspension beam, and at the connection between the load cell and the load-bearing beam. These gaskets can reduce the impact load on the load cell caused by the heavy object during the weighing process, thereby improving the measurement accuracy and service life of the load cell.

[0018] 3. The present invention proposes a hanging scale, which includes a scale body, a hanging mechanism and a weighing pan suspension mechanism. The hanging mechanism is connected to the scale body, and a receiving cavity is formed inside the scale body. A sensor device is installed in the receiving cavity. The bottom of the suspension beam is connected to the weighing pan suspension mechanism. When the weighing pan suspension mechanism carries an excessively heavy object, the limiting mechanism can limit the deformation of the weighing sensor and protect the weighing sensor.

[0019] 4. This utility model proposes a hanging scale, the scale body including a front shell and a rear shell joined together, a control board is installed in the receiving cavity, and a display screen electrically connected to the weighing sensor and the control board is installed on the front shell. The weighing result is displayed on the display screen, which can significantly improve weighing efficiency. The scale body is also equipped with an image sensor and a printer electrically connected, which can perform multiple tasks such as scanning, weighing and printing during use, making it convenient to use.

[0020] 5. The present invention proposes a hanging scale in which the top end of the suspension rod and the suspension arm are connected in a universal ball shape, which allows for flexible force distribution and improves the flexibility and stability of the hanging scale. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a schematic diagram of a sensor device according to the present invention;

[0023] Figure 2 is an exploded view of a sensor device according to this utility model;

[0024] Figure 3 is a schematic diagram of a hanging scale according to the present invention;

[0025] Figure 4 is an exploded view of a hanging scale according to this utility model;

[0026] Figure 5 is a schematic diagram of a hanging scale according to the present invention (front shell omitted);

[0027] In the diagram, 10 is the weighing sensor; 20 is the load-bearing beam; 30 is the suspension beam; 401 is the limiting rod; 402 is the first limiting component; 4021 is the stop block; 4022 is the nut; 403 is the second limiting component; 404 is the gasket; 50 is the hanging mechanism; 501 is the first support arm; 502 is the second support arm; 503 is the mounting base; 60 is the scale body; 601 is the front shell; 602 is the rear shell; 70 is the weighing pan suspension mechanism; 701 is the suspension arm; 7011 is the adapter; 702 is the tray; 80 is the suspension rod; 801 is the ball head; 90 is the display screen; 100 is the AI ​​camera; and 110 is the printer. Detailed Implementation

[0028] Example 1

[0029] The present invention will now be described in detail with reference to Figures 1 and 2.

[0030] This embodiment provides a sensor device, as shown in Figure 1, including a weighing sensor 10, a supporting beam 20, a suspension beam 30, and a limiting mechanism. The top of the first end of the weighing sensor 10 is connected to the supporting beam 20, and the bottom of the second end of the weighing sensor 10 is connected to the suspension beam 30. The suspension beam 30 can be used to carry items that need to be weighed. During weighing, the items can be tied or hung on the suspension beam 30. The limiting mechanism includes a limiting rod 401 and a first limiting member 402. The first end of the limiting rod 401 is connected to the supporting beam 20, and the second end of the limiting rod 401 is movably inserted through the suspension beam 30. The second end of the limiting rod 401 is provided with the first limiting member 402, which is located below the suspension beam 30. When the weighing weight exceeds the threshold of the weighing sensor 10, the first limiting member 402 abuts against the bottom of the suspension beam 30. By setting the first limiting member 402 to limit the deformation range of the load cell 10, the load cell 10 is ensured to operate within a safe range, preventing permanent damage and measurement errors when the rated load is exceeded, thereby improving measurement accuracy and effectively reducing maintenance costs.

[0031] Specifically, the first end of the limiting rod 401 can be fixedly connected to the bearing beam 20 by welding, riveting, threading, etc.; the limiting rod 401 can also be movably inserted through the bearing beam 20, and a second limiting member 403 is added to the end face of its first end, with the bottom of the second limiting member 403 abutting against the top of the bearing beam 20, thereby achieving relative fixation between the first end of the limiting rod 401 and the bearing beam 20 during the weighing process. The weighing sensor 10 is bolted to the bearing beam 20 and the suspension beam 30 respectively. In other embodiments, it can also be detachably connected by other means.

[0032] In this embodiment, the first end of the limiting rod 401 is movably inserted through the supporting beam 20. Both the suspension beam 30 and the supporting beam 20 have through holes adapted to the limiting rod 401, the radial dimension of which is larger than the diameter of the limiting rod 401. The first end of the limiting rod 401 is provided with a second limiting member 403, the bottom end of which abuts against the top of the supporting beam 20. The limiting rod 401 and the second limiting member 403 can be designed integrally. Specifically, as shown in Figure 2, both the supporting beam 20 and the suspension beam 30 have through holes adapted to the limiting rod 401, the radial dimension of which is smaller than the radial dimensions of the first limiting member 402 and the second limiting member 403. The first limiting member 402 includes a stop block 4021 and a nut 4022, one end of which can abut against the suspension beam 30.

[0033] In this embodiment, a gasket 404 is provided at the connection between the load cell 10 and the suspension beam 30, and at the connection between the load cell 10 and the load-bearing beam 20. This reduces the impact load on the load cell 10 caused by the heavy object during weighing, thereby improving the measurement accuracy and service life of the load cell 10. Specifically, the load cell 10 is connected to the load-bearing beam 20 and the suspension beam 30 respectively by fasteners. The gasket 404 has an opening for the fastener to pass through. The gasket 404 is located at the connection point of the fastener and covers the fastener to reduce friction at the connection point. Specifically, the fastener is a bolt.

[0034] In this embodiment, the limiting rod 401 is located on one side of the second end of the load cell 10. During weighing, the weight of the object causes the side of the suspension beam 30 closest to the limiting rod 401 to move away from the load-bearing beam 20, causing the load cell 10 to deform, thus completing the weighing process. When the weight of the object exceeds the load-bearing range, the suspension beam 30 moves to the first limiting member 402 and abuts against it, preventing the load cell 10 from continuing to deform and thus preventing overload. During the weighing process, the pad 404 can absorb the sudden impact force of the object and also reduce the friction between the load cell 10 and the load-bearing beam 20 and the suspension beam 30 during movement.

[0035] Example 2

[0036] The present invention will now be described in detail with reference to Figures 3 to 5.

[0037] This embodiment provides a hanging scale, as shown in Figure 3, including a scale body 60, a hanging mechanism 50, and a weighing pan suspension mechanism 70. The hanging mechanism 50 is connected to the scale body 60 and is used to fix it to the ceiling or wall. The scale body 60 has a receiving cavity, in which a sensor device as described above is installed. The bottom of the suspension beam 30 is connected to the weighing pan suspension mechanism 70. When the weighing pan suspension mechanism 70 carries an excessively heavy object, the limiting mechanism can limit the deformation of the weighing sensor 10 and protect the weighing sensor 10. The hanging mechanism 50 includes a first arm 501 and a second arm 502 fixedly connected. The first arm 501 is connected to the bearing beam 20 inside the scale body 60. The second arm 502 is provided with a mounting base 503 for connecting to the outside. The mounting base 503 has a through hole, through which the hanging scale can be fixed to a wall or other equipment without occupying floor space.

[0038] In this embodiment, the weighing pan suspension mechanism 70 includes a suspension rod 80, a suspension arm 701, and a tray 702. One end of the suspension rod 80 is connected to the suspension beam 30, and the other end is connected to the suspension arm 701. The bottom end of the suspension arm 701 is connected to the tray 702. Furthermore, a ball head 801 is provided at the bottom of the suspension rod 80, and the suspension rod 80 is spherically connected to the top end of the suspension arm 701.

[0039] Specifically, the top of the suspension arm 701 has a ball-shaped hole that fits over the suspension rod 80. This ball-shaped hole has a spherical concave structure, and its minimum radial dimension is smaller than that of the ball head 801, allowing the ball head 801 to rotate flexibly within the hole. The suspension rod 80 and suspension arm 701 are connected by the ball head 801 and the ball-shaped hole, providing flexible force distribution and better protection for the load cell 10. Simultaneously, the weighing pan suspension mechanism 70 can rotate around the central axis of the suspension rod 80, making it more flexible to use. The suspension arm 701 includes a connector 7011 that connects to the ball head 801. The connector 7011 has a ball-shaped hole and a notch communicating with the ball-shaped hole. The maximum size of the notch is not less than the diameter of the suspension rod 80, allowing for the replacement of the suspension arm 701 and the tray 702. The notch should not be too large to ensure that the ball head 801 can connect with the ball-shaped hole.

[0040] In this embodiment, as shown in Figure 4, the weighing body 60 includes a front shell 601 and a rear shell 602 spliced ​​together. The front shell 601 and the rear shell 602 are spliced ​​together to form a receiving cavity, in which a control board is disposed. A display screen 90 electrically connected to the control board is disposed on the front shell 601. The weighing sensor 10 is electrically connected to the control board and can directly obtain the weighing result. The weighing body 60 is also provided with an image sensor and a printer 110 electrically connected to the control board. As shown in Figure 5, the image sensor and the printer 110 are disposed at the bottom of the weighing body 60 and partially movable outside the weighing body 60 to facilitate scanning information and printing. The control board is a PLC control board, and the image sensor is an AI camera 100. During operation, the AI ​​camera 100 first scans the information of the item. The relevant information is transmitted to the control board and displayed on the display screen 90. After the relevant information is confirmed, the information is then transmitted to the printer 110 via the control board and printed, making it convenient to use.

[0041] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A sensor device, characterized by The device includes a weighing sensor, a load-bearing beam, a suspension beam, and a limiting mechanism. The top of the first end of the weighing sensor is connected to the load-bearing beam, and the bottom of the second end of the weighing sensor is connected to the suspension beam. The limiting mechanism includes a limiting rod and a first limiting member. The first end of the limiting rod is connected to the load-bearing beam, and the second end of the limiting rod is movably inserted through the suspension beam. The second end of the limiting rod is provided with the first limiting member, which is located below the suspension beam. When the weighing weight exceeds the threshold of the weighing sensor, the first limiting member abuts against the bottom of the suspension beam.

2. The sensor device as described in claim 1, characterized in that, The weighing sensors are bolted to the load-bearing beam and the suspension beam, respectively.

3. A sensor device as claimed in claim 1, characterized in that A gasket is provided at the connection between the weighing sensor and the suspension beam, and a gasket is provided at the connection between the weighing sensor and the load-bearing beam.

4. A sensor device as claimed in claim 1, characterized in that The first end of the limiting rod is movably inserted through the bearing beam, and the first end of the limiting rod is provided with a second limiting member, the bottom end of the second limiting member abutting the top of the bearing beam.

5. The sensor device as described in claim 1, characterized in that, The limiting rod is located on one side of the second end of the weighing sensor.

6. A suspended scale, characterized in that The weighing system includes a weighing body, a hanging mechanism, and a weighing pan suspension mechanism. The hanging mechanism is connected to the weighing body. A receiving cavity is formed inside the weighing body. A sensor device as described in any one of claims 1-5 is disposed in the receiving cavity. The bottom of the suspension beam is connected to the weighing pan suspension mechanism.

7. A suspended scale as claimed in claim 6, wherein, The weighing pan suspension mechanism includes a suspension rod, a suspension arm, and a tray. One end of the suspension rod is connected to the suspension beam, and the other end is connected to the suspension arm. The bottom end of the suspension arm is connected to the tray.

8. A hanging scale as described in claim 7, characterized in that, The bottom of the suspension rod is provided with a ball head, and the suspension rod is connected to the top of the suspension arm in a universal ball shape.

9. A hanging scale as described in claim 6, characterized in that, The scale body includes a front shell and a rear shell that are spliced ​​together. A control board is provided inside the cavity. A display screen electrically connected to the control board is provided on the front shell. The weighing sensor is electrically connected to the control board.

10. A hanging scale as described in claim 9, characterized in that, The scale body is also equipped with an image sensor and a printer that are electrically connected to the control board.

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