Strain gauge pasting and positioning device
By using the magnetic fixation and rotation adjustment of the strain gauge bonding and positioning device, combined with the use of guide rods, the problems of low accuracy and efficiency in strain gauge bonding and positioning are solved, achieving efficient and accurate strain gauge bonding.
Patent Information
- Application Number
- CN202420120722.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The existing technology for bonding and positioning strain gauges has low accuracy and low efficiency, mainly due to the reliance on visual positioning and manual operation, which leads to large errors and makes it difficult to achieve efficient and accurate positioning.
A strain gauge bonding and positioning device is adopted, including a magnetic base, a rotating base, and a guide bonding assembly. Through the cooperation of magnetic fixation, rotation adjustment, and guide rod, the strain gauge can be accurately positioned and quickly bonded.
It improves the bonding efficiency and positioning accuracy of strain gauges, ensuring accurate positioning and rapid bonding of strain gauges on metal surfaces, and reducing human error.
Smart Images
Figure CN223881507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of test equipment, in particular to a strain gauge sticking positioning device. BACKGROUND
[0002] The function of the strain gauge is to measure strain. Generally, the strain gauge is composed of a sensitive grid and other elements for measuring strain, and the strain of an object is measured based on the strain effect, that is, when a conductor or semiconductor material is mechanically deformed under the action of external force, the resistance value changes accordingly, which is called "strain effect".
[0003] The main steps of the installation of the strain gauge are as follows: 1) for the surface with paint, first use a file to file off the surface paint and clean the rust; 2) cross 45 degrees sandpaper to sand, slightly leave a line, and do not be too smooth; 3) clean the dirt and oil with alcohol or acetone, stick the cleaning liquid with cotton, and pay attention to wipe in one direction to prevent the dirty cotton from sticking to the metal surface; 4) make a mark line for positioning reference when sticking the strain gauge; 5) drop glue on the reverse side (smooth insulating surface) of the strain gauge, and quickly stick it to the metal surface; 6) cover the strain gauge surface with a small piece of plastic film and press it with fingers on the measured part, squeeze out the excess glue and absorb it on the plastic film, then press the strain gauge with the thumb tightly for three minutes, and finally gently remove the plastic film covering the strain gauge to prevent the strain gauge from being peeled off; 7) after the glue is cured, apply waterproof silicone on the surface of the strain gauge.
[0004] In the above steps, the sticking position and direction of the strain gauge are very important, and the position and direction directly affect the accuracy of measurement and the effectiveness of data. However, the industry generally uses the method of drawing a line on the surface of the sample, and uses the reference line to visually position and stick the strain gauge, which not only has low positioning accuracy, but also has low sticking efficiency of the strain gauge. CONTENT OF THE INVENTION
[0005] The purpose of the present application is to provide a strain gauge sticking positioning device, which can improve the sticking efficiency and positioning accuracy of the strain gauge.
[0006] The present application provides a strain gauge sticking positioning device, which comprises a base assembly and a guide sticking assembly.
[0007] The base assembly comprises a magnetic base, a fixed base and a rotating base, the fixed base is fixedly installed with the magnetic base, and the rotating base is rotatably installed on the fixed base.
[0008] The guiding and pasting assembly comprises a guiding sleeve, a guiding rod, a guiding key, a transparent back plate and a transparent bottom plate, the guiding rod is sleeved in the interior of the guiding sleeve, the guiding sleeve and the guiding rod are both provided with a guiding groove, the guiding key is matched and arranged in the guiding groove of the guiding sleeve and the guiding groove of the guiding rod, the guiding sleeve is installed on the rotating base, the transparent back plate is installed on the guiding rod, the transparent bottom plate is installed on the transparent back plate, and the to-be-pasted strain gauges are arranged on the surface of the transparent bottom plate.
[0009] In the implementation process, the strain gauge pasting and positioning device can be stably adsorbed on the surface of the ferrous part through the magnetic adsorption base to play a fixing role. The rotating base is fixedly installed with the magnetic adsorption base through the fixing base. The orientation of the guiding and pasting assembly can be rotated through the rotating base, thereby facilitating the pasting of the strain gauges. The to-be-pasted strain gauges arranged on the surface of the transparent bottom plate are pasted on the surface of the part through the linkage of the guiding rod and the transparent back plate in the guiding and pasting assembly, thereby realizing the pasting of the strain gauges. Thus, the strain gauge pasting and positioning device realizes accurate positioning through the base assembly and conveniently and quickly pastes the strain gauges through the guiding and pasting assembly, thereby realizing the technical effects of improving the pasting efficiency and pasting positioning accuracy of the strain gauges.
[0010] Further, the strain gauge pasting and positioning device further comprises a rotating screw, the rotating screw is installed on the rotating base, and the guiding sleeve is matched with the rotating screw. The rotating movement of the rotating screw drives the rotation of the guiding sleeve.
[0011] In the implementation process, the rotation of the guiding sleeve is driven when the rotating screw rotates, and the guiding rod is further rotated, thereby realizing the adjustment of the direction of the transparent bottom plate and the adjustment of the direction of the to-be-pasted strain gauges.
[0012] Further, threads are arranged on the rotating screw, and rotating teeth are arranged on the guiding sleeve, and the threads and the rotating teeth are intermeshed.
[0013] In the implementation process, the rotation of the guiding sleeve is driven when the rotating screw rotates through the intermeshing of the threads on the rotating screw and the rotating teeth on the guiding sleeve.
[0014] Further, the guiding and pasting assembly further comprises a gasket, a guiding spring and a guiding button, the gasket is arranged on the guiding key, the guiding button is arranged on one end of the guiding rod, and the guiding spring is arranged between the guiding button and the guiding gasket.
[0015] In the implementation process, the guiding key is limited by the gasket, thereby limiting the guiding key from falling out of the guiding groove. The guiding rod can be reset after the pasting of the strain gauges is completed through the guiding spring by pressing the guiding button.
[0016] Further, the base assembly further comprises a positioning pin and a positioning spring, the rotating base comprises at least one positioning hole, the positioning pin is matched with the positioning spring, the positioning pin is installed on the fixed base, and the positioning pin is fixedly installed with one of the positioning holes on the rotating base.
[0017] In the implementation process, the positioning pin can be inserted into the positioning hole of the rotating base through the positioning spring, so as to fix the rotating base; when the positioning pin is pulled out, the rotating base restores the rotating function.
[0018] Further, the base assembly further comprises a rotating pair, the rotating base is connected with the fixed base through the rotating pair, the rotating base comprises a first positioning hole and a second positioning hole, the guide rod faces a first direction when the positioning pin is fixedly installed with the first positioning hole, and the guide rod faces a second direction when the positioning pin is fixedly installed with the second positioning hole, wherein the first direction and the second direction are opposite.
[0019] In the implementation process, when the positioning pin is pulled out, the rotating base can rotate around the axis of the rotating pair; the rotating base has two positioning holes matched with the positioning pin to realize the positioning of the rotating base, when the rotating base faces downward, the guide rod can be pressed to make the strain sheet stick to the surface of the part; when the rotating base faces upward, the glue can be easily dropped on the surface of the strain sheet.
[0020] Further, the guide sticking assembly further comprises a plastic film, and the plastic film is matched with the transparent bottom plate.
[0021] Further, the plastic film is provided with a prefabricated hole, and the diameter of the prefabricated hole is smaller than the side length of the strain sheet to be stuck.
[0022] In the implementation process, the diameter of the prefabricated hole is smaller than the side length of the strain sheet to be stuck, so that the strain sheet can completely cover the prefabricated hole.
[0023] Further, the transparent back plate is an acrylic transparent back plate, and the transparent bottom plate is a silica gel transparent back plate.
[0024] In the implementation process, the transparent back plate is an acrylic transparent back plate, that is, a transparent bottom plate of hard material, which can effectively transmit the pressure applied by the guide rod to the transparent bottom plate; the transparent bottom plate is a silica gel transparent back plate, that is, a transparent bottom plate of soft material, which can make the strain sheet to be stuck bear force uniformly without damaging the welding points on the strain sheet.
[0025] Further, the base assembly further comprises a support rod, and the magnetic base is fixedly installed with the fixed base through the support rod.
[0026] Other features and advantages of the present application will be set forth in the descriptions that follow, and in part will be apparent from the description, or can be learned by practice of the application as hereinafter more fully described, or can be learned by practice of the application. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
[0027] In order to make the above objectives, features and advantages of the present application more obvious and comprehensible, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to for a detailed description. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0029] Figure 1 A structural schematic diagram of a strain gauge pasting and positioning device provided by the embodiments of the present application;
[0030] Figure 2 An exploded structural schematic diagram of a strain gauge pasting and positioning device provided by the embodiments of the present application.
[0031] The drawings are as follows: a base assembly 100; a magnetic suction base 110; a fixed base 120; a rotating base 130; a positioning pin 140; a positioning spring 150; a rotating pair 160; a support rod 170; a guiding and pasting assembly 200; a guiding sleeve 210; a guiding rod 220; a guiding key 230; a gasket 232; a guiding spring 233; a guiding button 234; a transparent back plate 240; a transparent bottom plate 250; a plastic film 260; a strain gauge to be pasted 300; a rotating screw rod 400. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.
[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0034] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.
[0035] In addition, the terms "mount", "set", "provided with", "connected", "connected" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or a monolithic structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0036] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific type and structure can be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.
[0037] Generally, in the actual operation of pasting strain gauges, in order to prevent the glue from curing, the action needs to be fast from the glue extruded to the surface of the strain gauge to the strain gauge pasted to the surface of the part. This process generally should not exceed one minute. Therefore, there is not much time for strain gauge positioning during the pasting process; in addition, after the strain gauge is placed on the surface of the sample and pasted in place, a plastic film needs to be covered on the surface of the strain gauge, and the strain gauge is pressed with fingers. During this process, because the fingers block the line of sight, it is easy to cause the movement of the position or direction of the strain gauge.
[0038] In order to solve the above-mentioned technical problems, the strain gauge pasting positioning device provided by the embodiment of the present application can be applied to the pasting process of the strain gauge; the strain gauge pasting positioning device is stably adsorbed on the surface of the ferrous part through the magnetic adsorption base to play a fixing role; the rotating base is connected and installed with the fixed base through the magnetic adsorption base; the rotating base can rotate relative to the fixed base; the direction of the guiding and pasting assembly can be rotated through the rotating base, so as to facilitate the pasting of the strain gauge; the strain gauge to be pasted arranged on the surface of the transparent base plate is pasted on the surface of the part through the linkage of the guiding rod and the transparent back plate in the guiding and pasting assembly, so as to realize the pasting of the strain gauge; thus, the strain gauge pasting positioning device realizes accurate positioning through the base assembly and pastes the strain gauge conveniently and quickly through the guiding and pasting assembly, so as to realize the technical effects of improving the pasting efficiency and pasting positioning accuracy of the strain gauge.
[0039] Please refer to Figure 1 and Figure 2 , Figure 1 The structure diagram of the strain gauge pasting positioning device provided by the embodiment of the present application is shown in Figure 2 The exploded structure diagram of the strain gauge pasting positioning device provided by the embodiment of the present application is shown in; the strain gauge pasting positioning device comprises a base assembly 100 and a guiding and pasting assembly 200;
[0040] Exemplarily, the base assembly 100 comprises a magnetic adsorption base 110, a fixed base 120 and a rotating base 130; the fixed base 120 is fixedly installed with the magnetic adsorption base 110; and the rotating base 130 is rotatably installed on the fixed base 120;
[0041] Exemplarily, the magnetic adsorption base 110 is a base with magnetism, which can be stably adsorbed on the surface of the ferrous part; the fixed base 120 is installed on the magnetic adsorption base 110; and the rotating base 130 is rotatably installed on the fixed base 120, that is, the rotating base 130 can rotate around the axis; thus, through the rotation of the rotating base 130, the direction of the guiding and pasting assembly 200 installed on the rotating base 130 can be conveniently adjusted, so as to realize the convenient installation, glue coating and other operations of the strain gauge.
[0042] Exemplarily, the guiding and pasting assembly 200 comprises a guiding sleeve 210, a guiding rod 220, a guiding key 230, a transparent back plate 240 and a transparent bottom plate 250, the guiding rod 220 is sleeved in the interior of the guiding sleeve 210, the guiding sleeve 210 and the guiding rod 220 are provided with guiding grooves, the guiding key 230 is matched and arranged in the guiding grooves of the guiding sleeve 210 and the guiding rod 220, the guiding sleeve 210 is installed on the rotating base 130, the transparent back plate 240 is installed on the guiding rod 220, the transparent bottom plate 250 is installed on the transparent back plate 240, and the to-be-pasted strain gauges 300 are arranged on the surface of the transparent bottom plate 250. Generally, the bottom surface of the transparent bottom plate is further provided with adhesive, transparent plastic film and strain gauges.
[0043] Exemplarily, by pushing the guiding rod 220, the guiding rod 220, the transparent back plate 240 and the transparent bottom plate 250 are connected and moved, so that the to-be-pasted strain gauges 300 arranged on the surface of the transparent bottom plate 250 are pasted on the surface of the part. When pasting the strain gauges, the guiding rod 220, the transparent back plate 240, the transparent bottom plate 250 and the plastic film are pushed, so that the strain gauges 300 arranged on the transparent bottom plate are pasted on the surface of the part. It should be noted that the guiding sleeve 210 does not move during the pasting of the strain gauges, and the guiding key 230 also does not move; because the guiding sleeve 210 is installed in the rotating base 130, it can only be driven to rotate relative to the center line of the hole of the rotating base 130 by the rotating screw 400; the half side of the guiding key is matched with the guiding groove in the guiding sleeve 210, and the guiding key 230 can only rotate with the guiding sleeve 210.
[0044] In some embodiments, the strain gauge pasting and positioning device can be stably adsorbed on the surface of the ferrous part to play a fixing role by arranging the magnetic adsorption base 110; optionally, the magnetic adsorption base 110 can have two states of having adsorption force and not having adsorption force on the ferrous part, and the adsorption force state can be switched by rotating the rotating switch. When the adsorption force state is switched to the state of having adsorption force, the magnetic adsorption base 110 can be adsorbed on the surface of the ferrous part.
[0045] Exemplarily, the rotating base 130 is fixedly installed with the fixed base 120 and the magnetic adsorption base 110, and the direction of the guiding and pasting assembly 200 can be rotated by the rotating base 130, so as to facilitate the pasting of the strain gauges, such as facilitating the pasting of the transparent plastic film and the strain gauges on the adhesive of the transparent bottom plate, and facilitating the coating of glue on the mounting surface of the strain gauges; the to-be-pasted strain gauges 300 arranged on the surface of the transparent bottom plate 250 are pasted on the surface of the part by the connection of the guiding rod 220 and the transparent back plate 240 in the guiding and pasting assembly 200, so as to realize the pasting of the strain gauges; thereby, the strain gauge pasting and positioning device realizes accurate positioning through the base assembly 100 and pastes the strain gauges conveniently and quickly through the guiding and pasting assembly 200, so as to realize the technical effects of improving the pasting efficiency and positioning accuracy of the strain gauges.
[0046] Exemplarily, the strain gauge pasting positioning device further comprises a rotating screw 400, which is installed on the rotating base 130, and the guide sleeve 210 is matched and installed with the rotating screw 400, and the rotating movement of the rotating screw 400 drives the rotation of the guide sleeve 210.
[0047] Exemplarily, by setting the rotating screw 400, the rotation of the guide sleeve 210 can be driven when the rotating screw 400 rotates, and the rotation of the guide rod 220 is further driven, so as to adjust the direction of the transparent bottom plate 250, thereby realizing the adjustment of the direction of the strain gauge 300 to be pasted.
[0048] Exemplarily, the rotating screw 400 is provided with a thread, and the guide sleeve 210 is provided with a rotating tooth, and the thread and the rotating tooth are mutually engaged.
[0049] Exemplarily, by the mutual engagement of the thread on the rotating screw 400 and the rotating tooth on the guide sleeve 210, the rotation of the guide sleeve 210 is driven when the rotating screw 400 rotates.
[0050] Exemplarily, the guide pasting assembly 200 further comprises a gasket 232, a guide spring 233 and a guide button 234, the gasket 232 is arranged on the guide key 230, the guide button 234 is arranged on one end of the guide rod 220, and the guide spring 233 is arranged between the guide button 234 and the guide gasket 232.
[0051] Exemplarily, the guide key 230 is limited by the gasket 232, so that the guide key 230 is prevented from falling out of the guide groove; by setting the guide spring 233, the guide rod 220 can be reset after the guide button 234 is pressed and the pasting of the strain gauge is completed; one half of the guide key 230 is embedded in the guide groove of the guide sleeve 210, and the other half of the guide key 230 is embedded in the guide groove of the guide rod 220, and the guide rod 220 can only move along the direction of the guide groove thereon by the action of the guide key 230, thereby avoiding the rotation of the guide rod 220 relative to the guide sleeve 210.
[0052] Exemplarily, the base assembly further comprises a positioning pin 140 and a positioning spring 150, the rotating base 130 comprises at least one positioning hole, the positioning pin 140 is matched with the positioning spring 150, the positioning pin 140 is installed on the fixed base 120, and the positioning pin 140 is fixedly installed with one of the positioning holes on the rotating base 130.
[0053] Exemplarily, by the positioning spring 150, the positioning pin 140 can be inserted into the positioning hole of the rotating base 130, so as to fix the rotating base 130; when the positioning pin 140 is actuated, the positioning pin 140 is pulled out, and the rotating function of the rotating base 130 is restored.
[0054] Exemplarily, the base assembly further comprises a rotating pair 160, the rotating base 130 is connected with the fixed base 120 through the rotating pair 160, the rotating base 130 comprises a first positioning hole and a second positioning hole, the guide rod 220 is directed to a first direction when the positioning pin 140 is fixedly installed in the first positioning hole, and the guide rod 220 is directed to a second direction when the positioning pin 140 is fixedly installed in the second positioning hole, wherein the first direction and the second direction are opposite.
[0055] Exemplarily, when the positioning pin 140 is pulled out, the rotating base 130 can rotate around the axis of the rotating pair 160; the rotating base 130 has two positioning holes which cooperate with the positioning pin 140 to realize the positioning of the rotating base 130, when the rotating base 130 is directed downward, the guide rod 220 can be pressed to enable the strain gauge to be pasted on the surface of the part; when the rotating base 130 is directed upward, the glue can be conveniently dropped on the surface of the strain gauge.
[0056] Exemplarily, the guide pasting assembly 200 further comprises a plastic film 260, the plastic film 260 is arranged in matching with the transparent bottom plate 250.
[0057] Exemplarily, the plastic film 260 is provided with a preformed hole, and the diameter of the preformed hole is less than the side length of the strain gauge 300 to be pasted.
[0058] Exemplarily, the diameter of the preformed hole is less than the side length of the strain gauge 300 to be pasted, so that the strain gauge can completely cover the preformed hole.
[0059] Exemplarily, the transparent back plate 240 is an acrylic transparent back plate, and the transparent bottom plate 250 is a silica gel transparent back plate.
[0060] Exemplarily, the transparent back plate 240 is an acrylic transparent back plate, that is, the transparent bottom plate 250 is a hard material, which can effectively conduct the pressure applied by the guide rod 220 to the transparent bottom plate 250; the transparent bottom plate 250 is a silica gel transparent back plate, that is, the transparent bottom plate 250 is a soft material, which can enable the strain gauge 300 to be pasted to be stressed uniformly and not to damage the welding points on the strain gauge.
[0061] Exemplarily, the base assembly 100 further comprises a support rod 170, and the magnetic base 110 is fixedly installed with the fixed base 120 through the support rod 170.
[0062] In some implementation scenarios, in combination with Figures 1 to 2 As shown in the figure, the strain gauge pasting and positioning device provided by the embodiment of the present application is used as follows:
[0063] A layer of adhesive is coated on the bottom surface of the transparent bottom plate 250, which is used to stick the plastic film 260 and the strain gauge 300 to be pasted, and can provide a small adhesive force to the plastic film 260 and the strain gauge 300 to be pasted, so that the plastic film 260 and the strain gauge 300 to be pasted can be easily separated from the transparent bottom plate 250 after the strain gauge 300 to be pasted and the surface of the part are glued; optionally, the adhesive can be double-sided tape material;
[0064] The plastic film 260 used in conjunction needs to be pre-made with a hole in the middle, and the diameter of the hole is smaller than the side length of the strain gauge 300 to be pasted, so that the strain gauge 300 to be pasted can completely cover the hole;
[0065] In use, the plastic film 260 is first adhered to the bottom surface of the transparent bottom plate 250, and the area of the plastic film 260 is larger than the bottom surface of the transparent bottom plate 250, so as to cover the bottom surface of the transparent bottom plate 250; then the strain gauge 300 to be pasted is adhered to the bottom surface of the transparent bottom plate 250 through the hole of the plastic film 260;
[0066] The transparent bottom plate 250 is a material with low hardness, such as silica gel, which is easily deformed under pressure; the transparent back plate 240 is a hard material, such as an acrylic plate; the transparent back plate 240 is fixedly connected with the guide rod 220, and the transparent bottom plate 250 is fixedly connected with the transparent back plate 240; when the strain gauge 300 to be pasted is pasted, the guide rod 220 is pressed downward, causing the transparent back plate 240 to be pressed downward, which acts on the transparent bottom plate 250, and the transparent bottom plate 250 transmits the pressure to the strain gauge 300 to be pasted; thereby air and excess glue are squeezed out from the strain gauge 300 to be pasted and the surface of the part; the transparent bottom plate 250 is a soft material, which can make the strain gauge 300 to be pasted bear force uniformly without damaging the solder joints on the strain gauge 300 to be pasted;
[0067] The outer surface of the guide sleeve 210 has teeth, which are engaged with the threads on the rotating screw 400, and the guide sleeve 210 can be rotated by the rotating movement of the rotating screw 400; thereby the direction of the strain gauge 300 to be pasted is adjusted; the guide sleeve 210 and the rotating screw 400 are both installed on the rotating base 130; the rotating base 130 is connected with the fixed base 120 through the rotary pair 160; when the positioning pin 140 is pulled out, the rotating base 130 can rotate around the axis of the rotary pair 160, and the rotating base 130 has two positioning holes which cooperate with the positioning pin 140 to realize the positioning of the rotating base 130; when the rotating base 130 is downward, the guide rod 220 is pressed to make the strain gauge 300 to be pasted pasted on the surface of the part; when the rotating base 130 is upward, the glue can be easily dropped on the surface of the strain gauge 300 to be pasted; the other end of the positioning pin 140 has a spring effect, so that the positioning pin 140 is inserted into the positioning hole;
[0068] The fixed base 120 is connected with the magnetic base 110 through a supporting rod; the magnetic base 110 can be adsorbed on the surface of the ferrous part in the adsorbed state, thereby playing the role of a fixing device;
[0069] When using the device, first, the to-be-pasted strain gauge 300 is adhered to the bottom surface of the transparent bottom plate 250 through the plastic film 260, then the position of the magnetic base 110 is adjusted according to the pasting position of the to-be-pasted strain gauge 300, and then the magnetic base 110 is adsorbed on the surface of the part; then the guide sleeve 210 is rotated by adjusting the rotating screw rod 400, so as to drive the guide rod 220 to rotate, thereby realizing the adjustment of the direction of the to-be-pasted strain gauge 300; after the position and direction of the to-be-pasted strain gauge 300 are adjusted, the rotating base 130 is rotated to be upward, so as to facilitate the dropping of the glue on the surface of the to-be-pasted strain gauge 300, then the rotating base 130 is downward, and the positioning pin 140 is locked; finally, the to-be-pasted strain gauge 300 is pasted on the surface of the part by pressing the guide rod 220;
[0070] Through the device, the pre-adjustment and positioning of the position of the to-be-pasted strain gauge 300 can be realized. After the glue is dropped, the to-be-pasted strain gauge 300 can be quickly pasted to the pre-adjusted and positioned position. Due to the design of the transparent bottom plate 250 and the transparent back plate 240, the positional relationship between the to-be-pasted strain gauge 300 and the positioning reference can be conveniently observed in the pre-adjustment and positioning stage of the strain position. Due to the design of the soft transparent bottom plate 250, the to-be-pasted strain gauge 300 can be uniformly stressed without damaging the welding points of the wires.
[0071] In all the embodiments of the present application, "large", "small" are relative, "more", "less" are relative, "upper", "lower" are relative, and the description of such relative terms will not be described again in the embodiments of the present application.
[0072] It should be understood that "in the present embodiment", "in the present embodiment" or "as an optional embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in the present embodiment", "in the present embodiment" or "as an optional embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.
[0073] In various embodiments of the present application, it should be understood that the magnitude of the sequence number of the above-mentioned processes does not mean the inevitable sequence of execution order, and the execution order of the processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0074] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A strain gauge sticking positioning device, characterized by, The device comprises a base assembly and a guiding and pasting assembly; The base assembly comprises a magnetic base, a fixed base and a rotating base, the fixed base is fixedly installed with the magnetic base, and the rotating base is rotatably installed with the fixed base; The guiding and pasting assembly comprises a guiding sleeve, a guiding rod, a guiding key, a transparent back plate and a transparent bottom plate, the guiding rod is sleeved in the guiding sleeve, the guiding sleeve and the guiding rod are both provided with guiding grooves, the guiding key is matchedly arranged in the guiding grooves of the guiding sleeve and the guiding rod, the guiding sleeve is installed on the rotating base, the transparent back plate is installed on the guiding rod, the transparent bottom plate is installed on the transparent back plate, and a strain gauge to be pasted is arranged on the surface of the transparent bottom plate.
2. The strain gauge positioning device of claim 1, wherein The device further comprises a rotating screw, which is installed on the rotating base and matchedly installed with the guiding sleeve, and the rotating motion of the rotating screw drives the rotation of the guiding sleeve.
3. The strain gauge positioning device of claim 2, wherein, The rotating screw is provided with threads, and the guiding sleeve is provided with rotating teeth, which are intermeshed with the threads.
4. The strain gauge positioning device of claim 1, wherein The guiding and pasting assembly further comprises a gasket, a guiding spring and a guiding button, the gasket is arranged on the guiding key, the guiding button is arranged on one end of the guiding rod, and the guiding spring is arranged between the guiding button and the gasket.
5. The strain gauge positioning device of claim 1, wherein, The base assembly further comprises a positioning pin and a positioning spring, the rotating base comprises at least one positioning hole, the positioning pin is matchedly arranged with the positioning spring, the positioning pin is installed on the fixed base, and the positioning pin is fixedly installed with one of the positioning holes on the rotating base.
6. The strain gauge positioning device of claim 5, wherein, The base assembly further comprises a rotating pair, the rotating base is connected with the fixed base through the rotating pair, the rotating base comprises a first positioning hole and a second positioning hole, the guiding rod faces a first direction when the positioning pin is fixedly installed with the first positioning hole, and the guiding rod faces a second direction when the positioning pin is fixedly installed with the second positioning hole, wherein the first direction and the second direction are opposite.
7. The strain gauge positioning device of claim 6, wherein, The guiding and pasting assembly further comprises a plastic film, which is matchedly arranged with the transparent bottom plate.
8. The strain gauge positioning device of claim 7, wherein, The plastic film is provided with a preformed hole, and the diameter of the preformed hole is smaller than the side length of the strain gauge to be pasted.
9. The strain gauge positioning device of claim 1, wherein, The transparent back plate is an acrylic transparent back plate, and the transparent bottom plate is a silica gel transparent back plate.
10. The strain gauge positioning device of claim 1, wherein, The base assembly further comprises a supporting rod, and the magnetic base is fixedly installed with the fixed base through the supporting rod.