Clamping type sensor

Abstract

The utility model is suitable for the technical field of sensors, and provides a clamping type sensor. The clamping type sensor comprises at least two elastic bodies, the elastic bodies are connected to form an installation space, and a to-be-detected piece is arranged in the installation space in a penetrating mode; the detection assembly is used for detecting the deformation of the to-be-detected piece, and the detection assembly is arranged on at least one elastic body; wherein each elastic body is respectively provided with a connecting structure which is connected with the elastic body so as to be clamped and fixed on a to-be-detected piece; at least one elastic body is provided with an installation structure used for installing the detection assembly. According to the utility model, a plurality of elastic bodies are adopted, and each elastic body is clamped and fixed on the to-be-detected piece. Thus, during installation, the elastic bodies can be installed through clamping, the structural strength of the to-be-detected piece is well guaranteed, and installation is convenient. Moreover, by adjusting the number of the elastic bodies, the elastic bodies can be installed on to-be-detected pieces with different sizes, so that the application range is enlarged, and the design is ingenious.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and in particular relates to a clamp-type sensor. Background Technology

[0002] Strain gauge sensors have been widely used in the weighing and force measurement industries. The main components of a strain gauge sensor generally include an elastic body and a strain gauge. When the elastic body is subjected to force, it produces a small deformation. The strain gauge senses the small deformation and converts it into an electrical signal output through a Wheatstone bridge. The electrical signal is then processed to obtain the corresponding force information.

[0003] In related technologies, sensors are mounted on the load-bearing beam of the equipment with screws. The sensors deform along with the load-bearing beam. This method requires machining threaded holes in the metal frame of the equipment, which carries the risk of damaging the original structural strength. Utility Model Content

[0004] In view of this, the present invention provides a clamp-on sensor to solve the problem of damage to the original structural strength during installation.

[0005] To solve the above problems, the technical solution of this utility model is implemented as follows:

[0006] A clamping sensor includes: at least two elastic bodies connected together to form a mounting space for accommodating a component to be tested, the component to be tested being disposed within the mounting space; a detection assembly for detecting the deformation of the component to be tested, the detection assembly being disposed on at least one of the elastic bodies; wherein each of the elastic bodies is provided with a connecting structure for clamping and fixing to the component to be tested; and at least one of the elastic bodies is provided with a mounting structure for mounting the detection assembly.

[0007] In some embodiments, each of the elastomers is provided with the connecting structure and the mounting structure; wherein the connecting structure and the mounting structure are located at different positions on the elastomer.

[0008] In some embodiments, the connecting structures are respectively provided at both ends of each of the elastomers, and the mounting structures are provided at other locations on the elastomers that are different from the two connecting structures.

[0009] In some embodiments, in each of the connected elastomers, a deformation gap is present between two elastomers at at least one connected position.

[0010] In some embodiments, the elastomers are bent; wherein the elastomers are connected together to form a shape that matches the shape of the mounting space to be tested.

[0011] In some embodiments, the elastomer is bent into an arc shape; the elastomers are connected together to form the mounting space with a circular outline.

[0012] In some embodiments, the connection structure includes a connection hole through which a locking member is inserted to lock and fix the two elastomers together.

[0013] In some embodiments, the mounting structure includes a strain hole formed in the elastomer, and at least a portion of the detection component is disposed within the strain hole.

[0014] In some embodiments, the detection component includes: a strain gauge disposed within the strain orifice, the strain gauge being used to detect the stress deformation of the elastic body; and a connector connected to the elastic body and electrically connected to the strain gauge, the connector being used at least to transmit the detection signal from the strain gauge.

[0015] In some embodiments, the detection component further includes a junction box secured to the elastomer by fasteners, with at least a portion of the connector located within the junction box.

[0016] The clamp-on sensor provided in this embodiment includes an elastic body and a detection component. At least two elastic bodies are provided, connected to form an installation space for accommodating a workpiece to be tested, which is then inserted into the installation space. At least one elastic body has a detection component mounted on it. Furthermore, each elastic body has a connecting structure that clamps and fixes it to the workpiece to be tested, and at least one elastic body has an installation structure for mounting the detection component. This embodiment of the invention, by using multiple elastic bodies and connecting them to clamp and fix them to the workpiece to be tested, eliminates the need for an installation structure on the workpiece to be tested, thus better ensuring the structural strength of the workpiece and improving ease of installation. Moreover, by adjusting the number of elastic bodies, it can be installed on workpieces of different sizes, thereby increasing its applicability and demonstrating good design ingenuity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the clamp-on sensor fixed on the workpiece to be tested according to an embodiment of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the clamp-on sensor provided in an embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 Schematic diagram of the cross section at point AA;

[0020] Figure 4 yes Figure 3 A cross-sectional view of section BB.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Clamp-on sensor; 11. Elastomer; 110. Mounting space; 12. Detection assembly; 121. Strain gauge; 122. Connector; 123. Junction box; 124. Fastener; 125. Wire hole; 13. Connection structure; 131. Connection hole; 132. Locking element; 14. Mounting structure; 141. Strain hole; 142. Partition plate; 15. Deformation gap; 2. Item to be tested. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0025] In the following description, the terms "first," "second," and "..." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0026] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0027] like Figure 1As shown in the figure, a clamping sensor 1 provided in this embodiment of the present invention is used to fix on the test piece 2, thereby enabling the detection of the deformation of the test piece 2 after being subjected to force. The principle of the clamping sensor 1 in detecting the deformation of the test piece 2 under force is as follows: "The force on the test piece 2 is transmitted to the elastic body. The elastic body senses the force on the test piece and deforms. The detection component installed on the elastic body can detect the deformation of the elastic body and simultaneously convert the deformation into an electrical signal. Since forces and torques in different directions will cause the elastic body to produce different deformation modes, by collecting and processing the electrical signals generated by the detection component, and using a specific decoupling algorithm, the force and torque components in each direction can be calculated, thereby obtaining the detection of the force on the test piece 2."

[0028] like Figure 1 and Figure 2 As shown, the clamp-on sensor 1 includes an elastic body 11 and a detection component 12. The detection component 12 is mounted on the elastic body 11 to detect the deformation of the elastic body 11 and generate an electrical signal, thereby realizing the corresponding detection function. Specifically, the elastic body 11 is usually a metal component with strong structural strength and capable of elastic deformation. By mounting the elastic body 11 on the object to be detected 2, it can sense the stress deformation of the object to be detected 2 and deform synchronously, thereby realizing the corresponding detection.

[0029] like Figure 2 As shown, the clamping sensor 1 provided in this embodiment of the present invention has at least two elastic bodies 11, and the elastic bodies 11 are connected to form an installation space 110 for accommodating the test piece 2, which is then inserted into the installation space 110. A detection component 12 is used to detect the deformation of the test piece 2, and is provided on at least one elastic body 11. Specifically, each elastic body 11 is provided with a connecting structure 13 that is connected to clamp and fix it to the test piece 2, and at least one elastic body 11 is provided with an installation structure 14 for mounting the detection component 12. This configuration, by connecting the elastic bodies 11 to each other through the connecting structure 13 and fixing them to the test piece 2 through clamping, avoids the need for connecting holes in the test piece 2 for installation, thus preventing damage to the original structural strength of the test piece 2. This design, which uses multiple elastic bodies 11 and interlocks them to clamp and mount the workpiece 2 under test, satisfies the installation requirements without damaging the original structure of the workpiece 2, thus better ensuring its structural integrity. Furthermore, the clamping and fixing method not only facilitates installation but also allows for installation on workpieces 2 of different sizes by adjusting the number of elastic bodies 11, making it widely applicable.

[0030] Specifically, by providing a mounting structure 14 for mounting the detection component 12 on at least one elastic body 11, at least one detection component 12 can be provided to meet the basic detection function. Furthermore, each elastic body 11 can be provided with a mounting structure 14, allowing the detection component 12 to be flexibly positioned on the corresponding elastic body 11 according to detection needs. Alternatively, each elastic body 11 can be provided with a separate detection component 12, enabling simultaneous detection by multiple detection components 12, thereby improving detection accuracy and sensitivity.

[0031] The clamping sensor 1 provided in this embodiment includes an elastic body 11 and a detection component 12. At least two elastic bodies 11 are connected to form an installation space 110 for accommodating a component 2 to be tested, which is then inserted into the installation space 110. Furthermore, at least one elastic body 11 has a detection component 12 for detecting the deformation of the component 2. Each elastic body 11 is connected to a connecting structure 13 for clamping and fixing to the component 2, and at least one elastic body 11 has a mounting structure 14 for mounting the detection component 12. This configuration, by using multiple elastic bodies 11 connected to each other via the connecting structure 13, allows for clamping and fixing to the component 2. Thus, installation can be achieved without creating a mounting structure 14 on the component 2, without damaging its original structure, thus better preserving its structural strength. The clamping and fixing installation also improves ease of installation. Furthermore, by adjusting the number of each elastomer 11, it can be installed on the test piece 2 of different sizes, thereby increasing the range of applications of the sensor, demonstrating its ingenious design.

[0032] like Figure 2 As shown, in some embodiments, each elastic body 11 is provided with a connecting structure 13 and a mounting structure 14, and the connecting structure 13 and the mounting structure 14 are located at different positions on the elastic body 11. Specifically, each elastic body 11 can be provided with a connecting structure 13 and a mounting structure 14, thereby improving the flexibility of the installation of the elastic body 11. It eliminates the need to provide an elastic body 11 with a mounting structure 14 to meet the requirements simply because a detection component 12 needs to be placed at a corresponding position. This method of providing a mounting structure 14 on each elastic body 11 reduces the installation requirements. Furthermore, by placing the connecting structure 13 and the mounting structure 14 at different positions on the elastic body 11, they do not interfere with each other during connection operations at the corresponding structures, improving the convenience of installation and connection. At the same time, it also avoids the risk of reducing the overall structural strength due to too many structures placed at the same position on the elastic body 11.

[0033] like Figure 2As shown, in some embodiments, each elastic body 11 has a connecting structure 13 at both ends, and a mounting structure 14 is located on the elastic body 11 at a position different from the two connecting structures 13. This arrangement not only allows the elastic body 11 to be easily connected to another elastic body 11, but also allows the remaining portion of the elastic body 11 between the two connecting structures 13 to be used for the mounting structure 14, providing more placement options and greater flexibility. In one embodiment, the mounting structure 14 can be positioned at the midpoint between the two connecting structures 13, thus ensuring sufficient space for connection operations at at least two connecting structures 13, improving installation convenience.

[0034] like Figure 2 and Figure 3 As shown, in some embodiments, in each connected elastic body 11, a deformation gap 15 is provided between two elastic bodies 11 at at least one connected position. Specifically, the elastic bodies 11 are connected in sequence to form a shape that can clamp and fix them to the test piece 2. In this way, there is a connected position between each pair of connected elastic bodies 11. The two elastic bodies 11 at each connected position can be in close contact with each other or have a gap, as long as they can be tightly clamped to the test piece 2 and there is no relative movement of the test piece 2. In this embodiment of the utility model patent, two elastic bodies 11 at at least one connected position are spaced apart to form a deformation gap 15. The deformation gap 15 is designed so that the two elastic bodies 11 are not in contact. This not only ensures that each elastic body 11 is in close contact with the workpiece 2 to be tested, so that when the workpiece 2 is subjected to force and undergoes tensile or compressive deformation, the stress can be transmitted to the elastic body 11 in a timely manner and sensed by the detection component 12, thus improving the sensitivity of the detection, but also prevents the two elastic bodies 11 at the connected position from being in close contact with the workpiece or absorbing part of the stress, which would cause a decrease in detection sensitivity.

[0035] In some implementations, the elastomers 11 can be bent, so that after the elastomers 11 are connected, the shape of the mounting space 110 matches the shape of the component to be tested 2. Specifically, the matching of the shape of the mounting space 110 with the shape of the component to be tested 2 includes that the shape of the mounting space 110 is exactly the same as the shape of the component to be tested 2 and can accommodate the component to be tested 12, or that the shape of the mounting space 110 is approximately the same as the shape of the component to be tested 2. After the component to be tested 2 is placed in the mounting space 110, it can have a large contact area with each elastomer 11, thereby allowing for more sensitive detection of the deformation of the component to be tested 2 and achieving sensitive detection.

[0036] By bending the elastic body 11 according to the shape of the test piece 2 to be clamped and fixed, the elastic bodies 11 can be connected and combined to satisfy the clamping and fixing of test pieces 2 with different shapes. The setup is flexible and has a wide range of applications.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the elastic body 11 can be bent into an arc shape. In this way, the elastic bodies 11 are connected and combined to form a circular mounting space 110, which can satisfy the requirement of clamping and fixing the cylindrical test piece 2. Specifically, when a circular mounting space 110 is required, if two elastic bodies 11 are provided, they can be bent into semicircles and then combined to form a circular mounting space 110. When more than two elastic bodies 11 are provided, each elastic body 11 is divided into arcs of corresponding sizes according to its quantity, and only needs to be combined to form a circle.

[0038] like Figure 2 and Figure 4 As shown, in some embodiments, the connecting structure 13 includes a connecting hole 131. A locking member 132 passes through the connecting hole 131 on the two connected elastic bodies 11 to lock and fix the two elastic bodies 11. In this way, the two elastic bodies 11 that need to be connected are locked together by the locking member 132, which is convenient for connection operation and has good fixing reliability. Specifically, the locking member 132 can be a bolt with external threads, while the connecting hole 131 can be a hole with internal threads, so that the locking connection can be achieved by threaded connection with the locking member 132. Of course, the connecting structure 13 can also be set to include a nut, and the locking and fixing can be achieved by the threaded connection between the nut and the locking member 132. When a nut is provided, the connecting hole 131 can also be a smooth hole without internal threads. The cooperation between the locking member 132 and the nut can realize the locking between the two elastic bodies 11 that need to be connected.

[0039] In some implementations, the connecting structure 13 can be equipped with a matching snap-fit ​​combination, or locked by driving the wedge slider through double eccentric wheels, or clamped by hinges. There are multiple ways to set it up, and it can be designed according to actual needs. No restrictions are imposed here.

[0040] like Figure 2 and Figure 3As shown, in some embodiments, the mounting structure 14 includes a strain hole 141 formed on the elastic body 11, and at least a portion of the detection component 12 is disposed within the strain hole 141. Specifically, the shape of the strain hole 141 is matched to the shape of the part in the detection component 12 that needs to be installed within the strain hole 141, thereby meeting the installation requirements. The position of the strain hole 141 on the elastic body 11 must also ensure that deformation can be sensitively detected. In the embodiments of this utility model patent, the strain hole 141 is positioned on the elastic body 11 such that the axis of the strain hole 141 is substantially parallel to the axis of the mounting space 110. That is, the strain hole 141 extends along the thickness direction of the elastic body 11 but does not penetrate the entire thickness of the elastic body 11, which is equivalent to reducing the material of the elastic body 11 at this position, making the elastic body 11 easier to deform, thereby meeting the requirements for sensitive detection.

[0041] like Figure 2 and Figure 3 As shown, in some embodiments, strain holes 141 can be provided on both sides of the elastomer 11 in the thickness direction, and the two strain holes 141 are not connected to each other and have a partition plate 142. The partition plate 142 can be used to install and fix the parts in the detection assembly 12 that need to be installed in the strain holes 141. Specifically, the two strain holes 141 can be used for the installation of parts in the detection assembly 12 at the same time, or one can be used at a time, without having to choose the placement position of the elastomer 11, thereby improving the ease of sensor manufacturing.

[0042] like Figure 2 and Figure 3 As shown, in some embodiments, the detection component 12 includes a strain gauge 121 and a connector 122. The strain gauge 121 is disposed within a strain gauge orifice 141 and is used to detect the deformation of the elastic body 11 under stress. The connector 122 is connected to the elastic body 11 and electrically connected to the strain gauge 121; the connector 122 is used at least to transmit the detection signal from the strain gauge 121. Specifically, the detection principle of the strain gauge 121 utilizes the physical and geometric properties of a conductor. When a conductor is stretched within its elastic limit, it will not break or undergo permanent deformation but will become narrower and longer; this deformation leads to an increase in its terminal resistance. Conversely, when a conductor is compressed, it will become wider and shorter; this deformation leads to a decrease in its terminal resistance. The strain gauge 121 is connected via a Wheatstone bridge circuit, converting the resistance change into a voltage signal output. Thus, by measuring the resistance of the strain gauge 121, the strain in its covered area can be calculated. The strain gauge 121 is electrically connected to the connector 122, and the connector 122 is electrically connected to an external detection device via a cable, so that the electrical signal generated by the strain gauge 121 can be transmitted to the detection device for analysis and processing, thereby obtaining the corresponding detection information.

[0043] In this embodiment of the invention, two elastic bodies 11 are connected in pairs to clamp and fix them onto the workpiece 2 to be tested. With this configuration, a Wheatstone full-bridge detection circuit can be formed by placing a strain gauge 121 on either of the two elastic bodies 11; alternatively, strain gauges 121 can be placed on each of the two elastic bodies 11 to form a Wheatstone half-bridge circuit, and then the circuits of the two elastic bodies 11 can be combined to form a Wheatstone full-bridge circuit; or strain gauges 121 can be placed on each of the two elastic bodies 11 to form a Wheatstone full-bridge circuit, and then the circuits of the two elastic bodies 11 can be connected in parallel to still form a Wheatstone full-bridge circuit. This allows for flexible configuration according to different testing requirements. The full-bridge circuit and half-bridge circuit mentioned above refer to the connection method of each strain gauge 121; in a full-bridge circuit, all four strain gauges 121 participate in the measurement, usually arranged symmetrically in pairs (two under tension, two under compression), forming a complete Wheatstone bridge. A half-bridge circuit requires only two strain gauges 121.

[0044] like Figure 2 and Figure 3 As shown, the connector 122 is disposed on the outer peripheral sidewall of the elastic body 11, and a corresponding wire-passing hole 125 communicating with the strain gauge 141 is also disposed on the elastic body 11, so that the wire used to electrically connect the connector 122 and the strain gauge 121 can pass through. The number of wire-passing holes 125 is the same as the number of strain gauge holes 141, so as to meet the wiring requirements of each strain gauge hole 141 when a strain gauge 121 is installed.

[0045] like Figure 2 and Figure 3 As shown, the detection assembly 12 also includes a junction box 123. The junction box 123 is fixed to the elastic body 11 by fasteners 124, and at least a portion of the connector 122 is located inside the junction box 123. By providing the junction box 123, the installation position of the connector 122 can be fixed, allowing one end of the connector 122 to extend into the junction box 123 and electrically connect to the strain gauge 121. The junction box 123 covers and protects the electrical connection position, improving product performance. The other end of the connector 122 extends out of the junction box 123, facilitating electrical connection to external detection equipment. The fasteners 124 used to fix the junction box 123 to the elastic body 11 can be screws or bolts, etc., providing stable and reliable fixation while also facilitating disassembly and assembly.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamp-on sensor, characterized in that, include: At least two elastomers are provided, and each elastomer is connected to form an installation space for accommodating the test piece, which is inserted into the installation space. A detection component is used to detect the deformation of the test piece, and at least one of the elastic bodies is provided with the detection component; Each of the elastic bodies is provided with a connection structure that is connected to clamp and fix the test piece; at least one of the elastic bodies is provided with a mounting structure for mounting the test component.

2. The clamp-on sensor as described in claim 1, characterized in that, Each of the elastomers is provided with the connecting structure and the mounting structure; wherein the connecting structure and the mounting structure are located at different positions on the elastomer.

3. The clamp-on sensor as described in claim 1, characterized in that, Each of the elastic bodies has a connecting structure at both ends, and the mounting structure is located at a position on the elastic body that is different from the two connecting structures.

4. The clamp-on sensor as described in claim 1, characterized in that, In each of the connected elastic bodies, there is a deformation gap between two elastic bodies at at least one connected position.

5. The clamp-on sensor as described in any one of claims 1 to 4, characterized in that, The elastomers are bent; wherein, each of the elastomers is connected and combined to form an installation space whose shape matches the shape of the part to be tested.

6. The clamp-on sensor as described in claim 5, characterized in that, The elastomer is bent into an arc shape; the elastomers are connected and combined to form the installation space with a circular outline.

7. The clamp-on sensor as described in any one of claims 1 to 3, characterized in that, The connection structure includes a connection hole, and a locking member is inserted through the connection hole on the two connected elastic bodies to lock and fix the two elastic bodies.

8. The clamp-on sensor as described in claim 1, characterized in that, The mounting structure includes a strain hole formed in the elastomer, and at least a portion of the detection component is disposed within the strain hole.

9. The clamp-on sensor as described in claim 8, characterized in that, The detection component includes: A strain gauge is disposed inside the strain orifice, and the strain gauge is used to detect the stress deformation of the elastic body; A connector is attached to the elastic body and electrically connected to the strain gauge, the connector being used at least to transmit the detection signal from the strain gauge.

10. The clamp-on sensor as described in claim 9, characterized in that, The detection component also includes: A junction box, which is fixed to the elastomer by fasteners, with at least a portion of the connector located inside the junction box.

Images