Weighing sensor

Abstract

The utility model belongs to the technical field of sensors, and provides a weighing sensor, which comprises a bottom plate, a weighing sensor main body fixed on the bottom plate, a pressure point connecting piece arranged on the weighing sensor main body, and an upper pressure plate positioned at the bottom, a guide bolt with the bottom connected with the bottom plate and the upper end movably connected with the upper pressing plate is arranged at the front end of the bottom plate, an overturn-preventing support connected with the upper pressing plate is arranged at the bottom of the upper pressing plate, the cross section of the overturn-preventing support is concave, a guide plate with a guide hole is arranged at the front end of the bottom of the overturn-preventing support, and supporting plates are arranged on the two sides of the bottom of the overturn-preventing support. A placing space for the weighing sensor main body is formed between the two supporting plates, and a buffer reset mechanism is arranged between the bottom plate and the supporting plates. According to the utility model, the upper pressing plate can be well supported and buffered, so that the weighing sensor is prevented from being damaged due to overturning, and the measurement precision of the weighing sensor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and specifically relates to a weighing sensor. Background Art

[0002] A weighing sensor is a device that converts mass signals into measurable electrical signal outputs. It is widely used in production in various industries, especially in weighing ingredients in the chemical and food industries. In the prior art, a weighing sensor mainly includes a base plate, a sensor, an upper pressure plate, a pressure point connector and other structures. When working, the bottom of the device under test (such as a reactor) is installed on the upper pressure plate and the weight acts on the weighing sensor. In this application scenario, if the device under test is unevenly fed or overloaded, it is easy to cause the weighing sensor to overturn due to uneven force, thereby causing the weighing sensor to be damaged. Utility Model Content

[0003] The purpose of the utility model is to provide a weighing sensor to solve the technical problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A weighing sensor comprises a base plate, a weighing sensor body fixed on the base plate, a pressure point connector arranged on the weighing sensor body, and an upper pressure plate located at the bottom, wherein a guide bolt is arranged at the front end of the base plate, the bottom of which is connected to the base plate and the upper end of which is movably connected to the upper pressure plate, and an anti-overturning bracket connected to the upper pressure plate is arranged at the bottom of the upper pressure plate, the cross-section of the anti-overturning bracket is concave, a guide plate with a guide hole is arranged at the front end of the bottom, support plates are arranged on both sides of the bottom, a placement space for the weighing sensor body is formed between the two support plates, and a buffer reset mechanism is arranged between the base plate and the support plate.

[0006] Furthermore, the buffer reset mechanism includes a buffer guide rod whose lower end is fixedly connected to the base plate and whose upper end passes through the support plate, and a spring which is sleeved on the guide rod and located between the support plate and the base plate, and the lower end of the spring is connected to the base plate and the upper end is connected to the bottom of the support plate.

[0007] Furthermore, a mounting groove is provided at the front end of the upper pressure plate, the screw of the guide bolt passes through the mounting groove and the guide hole, and the lower end thereof is fixedly connected to the base plate via a first fastening nut, and the head of the guide bolt is located in the mounting groove.

[0008] Furthermore, a second fastening nut located below the upper pressure plate is also provided on the screw rod of the guide bolt.

[0009] Furthermore, there are three buffer reset mechanisms located on one side and they are evenly distributed along the length direction of the support plate.

[0010] Furthermore, a connecting plate which is an integral structure with the anti-overturning bracket is provided at the upper end thereof, and the connecting plate is connected to the bottom of the upper pressure plate via connecting bolts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model is based on the structure of the existing weighing sensor, and a guide bolt, an anti-overturning bracket and a buffer reset mechanism are arranged between the upper pressure plate and the bottom plate. When the measured equipment is unevenly fed or overloaded, the above structure can better support and buffer the upper pressure plate, play an anti-overturning role, and avoid the weighing sensor from being damaged due to overturning. At the same time, based on the buffer reset mechanism, when the measured equipment is unevenly fed or the overload is eliminated, the buffer reset mechanism can assist the upper pressure plate to return to the initial position to ensure the measurement accuracy of the weighing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial schematic diagram of the utility model.

[0015] Figure 3 It is a top view of the anti-overturning bracket in the utility model.

[0016] Figure 4 It is a side view of the anti-overturning bracket in the utility model.

[0017] Among them, the names corresponding to the figure marks are as follows: 1-base plate, 2-weighing sensor body, 3-pressure point connector, 4-upper pressure plate, 5-guide bolt, 6-anti-overturning bracket, 7-guide hole, 8-guide plate, 9-support plate, 10-placing space, 11-guide rod, 12-spring, 13-installing groove, 14-first fastening nut, 15-second fastening nut, 16-connecting plate, 17-connecting bolt, 18-connecting hole. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to have a clearer understanding and knowledge of the present invention, the present invention is further described in detail in conjunction with the following embodiments. It should be noted that the specific embodiments described below are only used to explain the present invention and facilitate understanding. The technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

[0019] Example

[0020] like Figures 1 to 4 As shown, this embodiment provides a weighing sensor, including a base plate, a weighing sensor body, a pressure point connector and an upper pressure plate, wherein the weighing sensor body is fixed to the base plate by bolts, the pressure point connector includes a pressure point on the weighing sensor, a steel ball and a pressure cap arranged on the pressure point, and the upper pressure plate is located on the pressure point connector. The above structures are all existing mature structures, so they will not be described here in detail.

[0021] Based on the above structure, the present embodiment is provided with a guide bolt at the front end of the bottom plate, the bottom of which is connected to the bottom plate and the upper end of which is movably connected to the upper pressing plate. The connection structure between the guide bolt and the bottom plate and the upper pressing plate is as follows: a mounting groove is provided at the front end of the upper pressing plate, the screw of the guide bolt passes through the lower end of the mounting groove and is fixedly connected to the bottom plate through the first fastening nut, and the head of the guide bolt is located in the mounting groove. Under the structural premise of the guide bolt, the present embodiment is also provided with a second fastening nut located below the upper pressing plate on the screw of the guide bolt. When the weighing sensor is not in use (for example, during sales, transportation, and installation), the second fastening nut is rotated upward and abuts against the bottom of the upper pressing plate, and the upper pressing plate and the guide bolt are relatively fixed. At this time, the upper pressing plate is subjected to force, and the weighing sensor body is not subjected to force, which plays a protective role for the weighing sensor body; when the weighing sensor is in use, the second fastening nut is rotated downward, and the second fastening nut is disengaged from the upper pressing plate and is in a loosened state. At this time, the weighing sensor body is subjected to force and works.

[0022] In this embodiment, an anti-overturning bracket connected to the bottom of the upper pressure plate is provided. Specifically, the cross section of the anti-overturning bracket is concave, and a guide plate with a guide hole is provided at the front end of the bottom, and support plates are provided on both sides of the bottom. The placement space of the weighing sensor body is formed between the two support plates. During assembly, the screw of the guide bolt passes through the guide hole of the guide plate, and the weighing sensor body is fixed on the bottom plate and located in the placement space. Among them, the connection structure between the anti-overturning bracket and the upper pressure plate is as follows: a connecting plate in an integral structure with the anti-overturning bracket is provided at the upper end of the anti-overturning bracket, and the connecting plate is perpendicular to the anti-overturning bracket, and a connecting hole is provided on it, and it is connected and fixed to the bottom of the upper pressure plate by connecting bolts.

[0023] In this embodiment, a buffer reset mechanism is provided between the bottom plate and the support plate. Preferably, there are three buffer reset mechanisms on one side and they are evenly distributed along the length direction of the support plate. The buffer reset mechanism includes a buffer guide rod whose lower end is fixedly connected to the bottom plate and whose upper end passes through the support plate, and a spring sleeved on the guide rod and located between the support plate and the bottom plate, and whose lower end is connected to the bottom plate and whose upper end is connected to the bottom of the support plate; wherein the support plate can move relative to the buffer guide rod, and the elastic coefficient and stroke of the spring can be adjusted and designed according to the actual application scenario, and clearance fit is adopted between the buffer guide rod and the support plate, and between the guide bolt and the mounting slot.

[0024] Through the above-mentioned arrangement, when the equipment under test has uneven feeding or overload, the upper pressure plate is subjected to uneven force and tilts to one side. Under the joint action of the guide bolts, anti-overturning bracket and buffer reset mechanism, the upper pressure plate is supported and buffered. When the uneven feeding or overload of the equipment under test is eliminated, the buffer reset mechanism can assist the upper pressure plate to return to its initial position.

[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A weighing sensor, comprising a base plate (1), a weighing sensor body (2) fixed on the base plate (1), a pressure point connector (3) arranged on the weighing sensor body (2), and an upper pressure plate (4) located at the bottom, characterized in that: A guide bolt (5) is provided at the front end of the base plate (1), the bottom of which is connected to the base plate (1) and the top of which is movably connected to the upper pressure plate (4). An anti-overturning bracket (6) connected to the upper pressure plate (4) is provided at the bottom of the upper pressure plate (4). The cross section of the anti-overturning bracket (6) is concave, and a guide plate (8) having a guide hole (7) is provided at the front end of the bottom thereof. Support plates (9) are provided on both sides of the bottom. A placement space (10) for a weighing sensor body (2) is formed between the two support plates (9). A buffer reset mechanism is provided between the base plate (1) and the support plate (9).

2. The weighing sensor according to claim 1, characterized in that: The buffer reset mechanism comprises a buffer guide rod (11) whose lower end is fixedly connected to the base plate (1) and whose upper end passes through the support plate (9), and a spring (12) sleeved on the guide rod (11) and located between the support plate (9) and the base plate (1), wherein the lower end of the spring (12) is connected to the base plate (1) and the upper end is connected to the bottom of the support plate (9).

3. The weighing sensor according to claim 2, characterized in that: A mounting groove (13) is provided at the front end of the upper pressure plate (4); the screw of the guide bolt (5) passes through the mounting groove (13) and the guide hole (7); the lower end of the screw is fixedly connected to the base plate (1) via a first fastening nut (14); and the head of the guide bolt (5) is located in the mounting groove (13).

4. The weighing sensor according to claim 3, characterized in that: A second fastening nut (15) located below the upper pressing plate (4) is also provided on the screw rod of the guide bolt (5).

5. The weighing sensor according to claim 4, characterized in that: There are three buffer reset mechanisms located on one side and they are evenly distributed along the length direction of the support plate (9).

6. The weighing sensor according to claim 5, characterized in that: The upper end of the anti-overturning bracket (6) is provided with a connecting plate (16) which is an integral structure therewith, and the connecting plate (16) is connected to the bottom of the upper pressing plate (4) via connecting bolts (17).

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