CN204373842U - High precision device for measuring force - Google Patents

Abstract

The utility model relates to a high-precision force measuring device, comprising: a frame; at least one weight loading and hanging device, which is arranged on the frame, and is used to automatically find the vertical center of the following weight groups and load the weight groups ; At least one weight group, the weight group includes one or more connected weights, each weight group is set corresponding to one of the weight loading suspension devices, and is used to provide test loading force. In the utility model, the weight loading and hanging device automatically finds the vertical center of the weight group to ensure that the force value of the same weight group is the same for each test, ensures the stability of the force value, reduces the test error, and improves the accuracy rate. And multiple weight groups provide large tonnage force value.

Description

High precision force measuring device

technical field

The utility model belongs to the technical field of measuring machinery, in particular to a high-precision force measuring device.

Background technique

All measuring instruments must pass metrological verification or calibration to ensure the accuracy and reliability of their measurement data. In our country, a corresponding value transmission system has been established for various measurement parameters. There is no exception for force measuring instruments, which must be verified or calibrated by standard force gauges or force standard devices.

Force value detection is an important part of mechanical measurement and testing, and is widely used in national production and life. Generally, when testing the force value, a weight group with multiple weights connected in series is mostly used to detect the force value of the product. In the prior art, the vertical center of the weight group changes during the test, while ordinary test tools directly Loading on the central rod of the weight group makes the error of the test larger and affects the accuracy of the test.

Contents of the invention

The purpose of the utility model is to overcome the defects of the prior art and provide a high-precision force measuring device.

The technical solution to realize the purpose of this utility model is: a high-precision force measuring device, including:

frame;

The weight loading and hanging device is arranged on the frame, and is used to automatically find the vertical center of the following weight groups and load the weight groups;

A weight set, the weight set includes one or more connected weights, which are arranged on the weight loading and hanging device, and are used to provide test loading force.

Further, the weight loading and hanging device includes a bracket, an upper knife and a lower knife, a bracket is horizontally arranged on the bracket, the upper knife and the lower knife are vertically arranged to form a cross structure, and the upper knife and the lower knife The blades of the knives are oppositely arranged and located in the knife grooves on the upper and lower surfaces of the bracket, and the upper knives are connected with the weight group.

Further, the bracket is movably arranged on the support in the vertical direction.

Further, limit mechanisms are provided on both sides of the bracket in the horizontal direction.

Further, at least one weight group is arranged on the same straight line along the vertical direction from bottom to top of the frame, and a weight loading and hanging device is respectively arranged on the top of the weight group.

Further, a weight loading and hanging device is arranged on the top of the weight group.

Further, the bottom of the weight set is also provided with a lifting platform.

Further, a hydraulic amplifier is also provided, and the hydraulic amplifier is connected with the weight loading hanging device.

The utility model has positive effects: in the utility model, the weight loading and hanging device automatically finds the vertical center of the weight group to ensure that the force value of the same weight group is the same for each test, and the stability of the force value is guaranteed. Reduce test errors, improve accuracy, and multiple weight groups provide large-tonnage force values.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be further described in detail according to specific embodiments below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the weight loading and hanging device of the present invention.

Among them: 1. Rack, 2. Weight group, 3. Weight loading suspension device, 4. Support, 5. Lower cutter, 6. Bracket, 7. Upper cutter.

Detailed ways

A kind of embodiment of the utility model,

The high-precision force measuring device, as shown in Figure 1, includes:

Rack 1;

Two weight loading and hanging devices 3 are arranged on the frame 1, and are used to automatically find the vertical center of the weight group 2 and load the weight group 2;

Two weight groups 2, including 7 connected weights and 15 connected weights arranged vertically from bottom to top, the top of each weight group 2 corresponds to a weight loading suspension device 3 Connection setup to provide force for test loading.

In this embodiment, the weight loading and hanging device 3 automatically finds the vertical center of the weight group 2 to ensure that the force value of each test of the same weight group is the same, ensuring the stability of the force value, reducing test errors, and improving accuracy. Rate.

As shown in Figure 2, in some embodiments, it can be selected that the weight loading suspension device 3 includes a bracket 4, an upper cutter 7 and a lower cutter 5, and a bracket 6 is horizontally arranged on the bracket 4, and the upper cutter 7 and the lower cutter 5 are arranged perpendicular to each other to form a cross structure, the blades of the upper cutter 7 and the lower cutter 5 are arranged oppositely and are located in the grooves on the upper and lower surfaces of the bracket 6, and the upper cutter 7 is connected with the weight group 2. The blades of the upper knife 7 and the lower knife 5 are arranged in the knife groove, the friction force with the knife groove is small during the test, the sensitivity is high, and the accuracy of the test is improved.

In order to improve the sensitivity of the weight loading suspension device 3 , in some other embodiments, the bracket 6 is movably arranged on the bracket 4 in the vertical direction.

According to actual situation, can choose, bracket 6 horizontal direction both sides are provided with limiting mechanism, and limiting mechanism is ball or elastic member, when bracket 6 vertical direction moves up and down, limit bracket 6 and do not produce offset in horizontal direction.

In some other embodiments, a weight loading and hanging device 3 is provided on the top of the weight group 2. When there are multiple weight groups 2, the vertical centers of the multiple weight groups 2 can be finally located to ensure a large The stability of the force value during the tonnage test improves the accuracy of the test.

In some other embodiments, the bottom of the weight group 2 is also provided with a lifting platform, and each weight group 2 can place the number of weights according to the needs, and the lifting platform can adjust the space where the weight group 2 is placed, which is more convenient.

In some other embodiments, a hydraulic amplifier is also provided, and the hydraulic amplifier is connected with the weight loading and hanging device, and the force value is amplified by the hydraulic amplifier to realize the test of the large-tonnage force value.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. It should be understood that the above descriptions are only specific embodiments of the present utility model and are not intended to limit the present invention. For the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (8)

1. The high-precision force measuring device is characterized in that it comprises: frame; At least one weight loading and hanging device is arranged on the frame and is used to automatically align the vertical center of the following weight groups and load the weight groups; At least one weight group, the weight group includes one or more connected weights, each weight group is set corresponding to one of the weight loading suspension devices, and is used to provide test loading force. 2. The high-precision force measuring device according to claim 1, wherein the weight loading and hanging device comprises a bracket, an upper cutter and a lower cutter, a bracket is horizontally arranged on the bracket, and the upper cutter The upper and lower knives are arranged perpendicular to each other to form a cross structure, the blades of the upper and lower knives face each other and are located in the grooves on the upper and lower surfaces of the bracket, and the upper knives are connected with the weight set. 3. The high-precision force measuring device according to claim 2, characterized in that, the bracket is movably arranged on the support in the vertical direction. 4. The high-precision force measuring device according to claim 3, characterized in that, limit mechanisms are provided on both sides of the bracket in the horizontal direction. 5. The high-precision force-measuring device according to claim 1, characterized in that, the frame is provided with at least one weight group along the vertical direction from bottom to top and on the same straight line, and the tops of the weight groups are respectively Correspondingly, a weight loading suspension device is provided. 6 . The high-precision force measuring device according to claim 5 , characterized in that, a weight loading and hanging device is arranged on the top of the weight group. 7 . 7. The high-precision force measuring device according to claim 1, characterized in that, a lifting platform is also provided at the bottom of the weight set. 8. The high-precision force measuring device according to claim 1, characterized in that, a hydraulic amplifier is also provided, and the hydraulic amplifier is connected with the weight loading hanging device.