Clamping force measuring device

Abstract

The utility model discloses a clamping force measuring device which comprises a bottom plate, a dovetail clamp is arranged at the upper end of the bottom plate, a detection mechanism used for detecting the clamping force of the dovetail clamp is arranged between the dovetail clamp and the bottom plate, and the detection mechanism comprises a fixed block, a rotating shaft, a rotating plate, a strain gauge and a stress plate. Fixing blocks are fixedly arranged on the two sides of the upper end of the bottom plate, rotating shafts are movably arranged at the upper ends of the fixing blocks through bearings, rotating plates are fixedly arranged on the outer sides of the rotating shafts, strain gauges are embedded in the upper ends of the rotating plates, stress plates are fixedly arranged on the outer sides of the strain gauges, and the dovetail clamps are arranged on the surfaces of the outer sides of the stress plates in a clamping mode. According to the utility model, the clamping angle of the dovetail clamp can be conveniently and rapidly changed, so that the clamping force test can be carried out on the dovetail clamps with different clamping angles according to the requirements, and the test effect of the device can be improved, so that the device is suitable for the detection standards of different angles.

Description

Technical Field

[0001] This utility model relates to the field of force measuring device technology, specifically a clamping force measuring device. Background Technology

[0002] Clamping force measurement is an important technology in fields such as mechanical engineering, materials testing, and quality control, used to measure whether the clamping force of a product meets the standard.

[0003] This application mainly focuses on the detection of the clamping force of dovetail clamps. In the prior art, dovetail clamps generally generate clamping force through the elastic force of springs or torsion springs. Thus, the magnitude of the elastic force (clamping force) varies depending on the opening degree of the dovetail clamp. Existing clamping force measuring devices of this type generally measure force by clamping strain gauges with dovetail clamps, but they cannot quickly adjust the opening angle of the dovetail clamps. Therefore, they cannot quickly adapt to different testing angle standards. Thus, an improved clamping force measuring device is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to provide a clamping force measuring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping force measuring device, comprising a base plate, a dovetail clamp disposed at the upper end of the base plate, and a detection mechanism for detecting the clamping force of the dovetail clamp disposed between the dovetail clamp and the base plate, the detection mechanism comprising a fixed block, a rotating shaft, a rotating plate, a strain gauge, and a force plate, the fixed blocks being fixedly disposed on both sides of the upper end of the base plate, the rotating shaft being movably disposed on the upper end of the fixed block via a bearing, the rotating plate being fixedly disposed on the outer side of the rotating shaft, the strain gauge being embedded in the upper end of the rotating plate, the force plate being fixedly disposed on the outer side of the strain gauge, the dovetail clamp being clamped and disposed on the outer surface of the force plate, and a transmission mechanism for driving the rotating plate to rotate and open being disposed between the middle of the upper end of the base plate and the rotating plate.

[0006] Preferably, the transmission mechanism includes an electric push rod, a notch, a transmission rod, and a connecting block. The electric push rod is fixedly installed at the middle of the upper end of the base plate. The movable end of the electric push rod has a notch. The transmission rod is movably installed on both sides of the notch through a rotating shaft. The connecting block is fixedly installed on the surface of the rotating plate. The transmission mechanism can simultaneously push the two rotating plates to rotate in opposite directions, thereby controlling the opening size of the rotating plates. This allows the clamping angle of the dovetail clip to be changed, enabling clamping force testing of dovetail clips with different clamping angles as needed.

[0007] Preferably, the end of the transmission rod near the connecting block is movably connected to the connecting block via a rotating shaft. The transmission rod needs to be hinged to the connecting block via a rotating shaft to prevent motion interference and to push the rotating plate to rotate when the electric push rod retracts.

[0008] Preferably, the electrical signal output terminal of the strain gauge is connected to the pressure detection device. The strain gauge senses the pressure and generates different resistances. The pressure detection device (which is existing technology and is not shown in the figure) can determine the pressure that the dovetail clamp applies to the force plate and the strain gauge by detecting the resistance, thereby determining whether the clamping force of the dovetail clamp product meets the standard.

[0009] Preferably, the outer surface of the load-bearing plate is provided with anti-slip grooves. When the dovetail clamps hold the load-bearing plate, the anti-slip grooves can increase the friction of the load-bearing plate surface to prevent the dovetail clamps from slipping off.

[0010] Preferably, a limiting block is fixedly provided on one side of the surface of the force-bearing plate, which can serve as a reference point.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention allows the electric push rod to extend or shorten, thereby driving two rotating plates to rotate in opposite directions via a transmission rod. This controls the opening size of the rotating plates, thus changing the clamping angle of the dovetail clamp. This enables clamping force testing of dovetail clamps with different clamping angles as needed, making the device suitable for different testing standards.

[0013] Furthermore, when the dovetail clamp is held on the surface of the force plate, the angle of the rotating plate can be changed directly by extending and retracting the electric push rod. In this way, the clamping force of the dovetail clamp can be dynamically detected, thereby determining whether the clamping force of the dovetail clamp is linear and meets the standard, which can further improve the detection effect of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a clamping force measuring device according to the present invention;

[0015] Figure 2 This is a front view of a clamping force measuring device according to the present invention;

[0016] Figure 3 This utility model relates to a clamping force measuring device. Figure 1 A magnified view of point A in the middle.

[0017] In the diagram: 1. Base plate; 2. Dovetail clamp; 3. Fixing block; 4. Rotating shaft; 5. Rotating plate; 6. Strain gauge; 7. Force plate; 8. Electric push rod; 9. Notch; 10. Transmission rod; 11. Connecting block; 12. Anti-slip groove; 13. Limiting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a clamping force measuring device, including a base plate 1, a dovetail clamp 2 provided on the upper end of the base plate 1, and a detection mechanism for detecting the clamping force of the dovetail clamp 2 between the dovetail clamp 2 and the base plate 1. The detection mechanism includes a fixed block 3, a rotating shaft 4, a rotating plate 5, a strain gauge 6, and a force plate 7. Fixed blocks 3 are fixedly provided on both sides of the upper end of the base plate 1. The rotating shaft 4 is movably provided on the upper end of the fixed block 3 through a bearing. The rotating plate 5 is fixedly provided on the outer side of the rotating shaft 4. The strain gauge 6 is embedded in the upper end of the rotating plate 5. The force plate 7 is fixedly provided on the outer side of the strain gauge 6. The dovetail clamp 2 is clamped on the outer surface of the force plate 7. A transmission mechanism for driving the rotating plate 5 to rotate and open is provided between the middle of the upper end of the base plate 1 and the rotating plate 5.

[0020] The transmission mechanism includes an electric push rod 8, a notch 9, a transmission rod 10, and a connecting block 11. The electric push rod 8 is fixedly installed in the middle of the upper end of the base plate 1. The movable end of the electric push rod 8 has a notch 9. The transmission rod 10 is movably installed on both sides of the notch 9 through a rotating shaft 4. The connecting block 11 is fixedly installed on the surface of the rotating plate 5. The transmission mechanism can simultaneously push the two rotating plates 5 to rotate in opposite directions, thereby controlling the opening size of the rotating plates 5. This can change the clamping angle of the dovetail clip 2, so that the clamping force of the dovetail clip 2 with different clamping angles can be tested as needed.

[0021] The end of the transmission rod 10 near the connecting block 11 is movably connected to the connecting block 11 via a rotating shaft 4; the transmission rod 10 needs to be hinged to the connecting block 11 via a rotating shaft to prevent motion interference and to push the rotating plate 5 to rotate when the electric push rod 8 retracts;

[0022] The electrical signal output terminal of the strain gauge 6 is connected to the pressure detection device. The strain gauge 6 senses the pressure and generates different resistances. The pressure detection device (which is existing technology and is not shown in the figure) can determine the pressure that the dovetail clamp 2 applies to the force plate 7 and the strain gauge 6 at this time by detecting the resistance. Thus, it can determine whether the clamping force of the dovetail clamp 2 meets the standard.

[0023] The outer surface of the load-bearing plate 7 is provided with an anti-slip groove 12. When the dovetail clip 2 clamps the load-bearing plate 7, in order to prevent the dovetail clip 2 from slipping off, the anti-slip groove 12 can increase the friction of the surface of the load-bearing plate 7 to prevent the dovetail clip 2 from slipping off.

[0024] A limiting block 13 is fixedly installed on one side of the surface of the force plate 7, which can serve as a reference point.

[0025] Working principle: The basic operating method of this device is as follows: Figure 1 As shown, the dovetail clamp 2, which requires testing clamping force, is directly clamped onto the surface of the force plate 7 and pressed against the limiting block 13 as a standard. At this time, the strain gauge 6 senses the pressure and generates different resistances. Then, a pressure detection device is used to detect the resistance, which determines the pressure exerted by the dovetail clamp 2 on the force plate 7 and the strain gauge 6, thereby determining whether the clamping force of the dovetail clamp 2 meets the standard. This device is convenient to use.

[0026] In addition, this device can also perform the following tests during use: by extending or shortening the electric push rod 8, the two rotating plates 5 can be rotated in opposite directions through the transmission rod 10, thereby controlling the opening size of the rotating plates 5. This changes the clamping angle of the dovetail clip 2, allowing for clamping force testing of dovetail clips 2 with different clamping angles as needed. This makes the device suitable for different testing standards.

[0027] Furthermore, when the dovetail clamp 2 is clamped on the surface of the force plate 7, the angle of the rotating plate 5 can be changed directly by extending and retracting the electric push rod 8. In this way, the clamping force of the dovetail clamp 2 can be dynamically detected, thereby determining whether the clamping force of the dovetail clamp 2 is linear and meets the standard, which can further improve the detection effect of the device.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping force measuring device comprising a base plate (1), characterised in that: The bottom plate (1) upper end is provided with dovetail clamp (2), the dovetail clamp (2) with bottom plate (1) between being provided with the detection mechanism for detecting the clamping force of dovetail clamp (2), the detection mechanism includes fixed block (3), pivot (4), rotating plate (5), strain gauge (6), stressed plate (7), the bottom plate (1) upper end both sides are fixedly provided with fixed block (3), the fixed block (3) upper end is movably provided with pivot (4) through bearing, the pivot (4) outside is fixedly provided with rotating plate (5), the rotating plate (5) upper end is embedded with strain gauge (6), the strain gauge (6) outside is fixedly provided with stressed plate (7), the dovetail clamp (2) is clamped and is provided on the stressed plate (7) outside surface, the bottom plate (1) upper end middle part is provided with transmission mechanism for driving rotating plate (5) to rotate and open between the rotating plate (5).

2. A pinch force dynamometer according to claim 1, wherein: The transmission mechanism includes electric push rod (8), notch (9), transmission rod (10), connecting block (11), the bottom plate (1) upper end middle part is fixedly provided with electric push rod (8), the movable end of electric push rod (8) is provided with notch (9), the both sides in the notch (9) are movably provided with transmission rod (10) through pivot (4), the surface of rotating plate (5) is fixedly provided with connecting block (11).

3. A pinch force dynamometer according to claim 2, wherein: The transmission rod (10) is movably connected between the one end close to connecting block (11) and connecting block (11) through pivot (4).

4. A pinch force dynamometer as in claim 1, wherein: The electric signal output end of strain gauge (6) is connected with pressure detection device.

5. A pinch force dynamometer as in claim 1, wherein: The stressed plate (7) outside surface is provided with anti-skid groove (12).

6. A pinch force dynamometer as in claim 1, wherein: The surface of stressed plate (7) is fixedly provided with limit block (13).

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