CN204330503U - A kind of two station strain gauge load cell creep loading device for testing - Google Patents

Abstract

The utility model discloses a creep loading device for a two-station strain type weighing sensor, which comprises an upper platform, a support frame, a first loading chain, a second loading chain, a strain type weighing sensor, a rotating device, a display screen, a loading The platform and the stand, the rotating device is connected with the driving gear through the motor, and drives the rotation of the loading platform tray by engaging the driven gear, so as to realize the station change of the strain gauge load cell on the loading platform tray. The loading and testing of the loading chain at the same time improves the test efficiency; at the same time, through the loading platform that rotates around the center, the uninterrupted and continuous testing of the loading chain to the strain gauge load cell is realized, which improves the test efficiency, reduces the test time, and reduces human intervention. The influence of the loading chain improves the precision, thereby improving the efficiency and accuracy of the creep test.

Description

A two-station strain gauge load cell creep test loading device

technical field

The utility model relates to a creep test loading device for a two-station strain type load cell, which comprises two synchronously loaded loading chains and a loading table rotating around the center, which belongs to the innovation in the field of creep test devices.

Background technique

Strain gauge load cells are mainly used for engineering force measurement and weighing measurement. The strain gauge load cell is the main device for manufacturing various electronic scales, and the accuracy of the sensor directly affects the quality of the electronic scale. Among the performance parameters of the strain gauge load cell, the creep performance parameters of the strain gauge load cell directly affect the measurement accuracy, measurement precision and other indicators. Therefore, the detection of the creep performance of the load cell is of great significance to the load cell. In actual production, the detection of the creep performance of the load cell also includes instantaneous zero return, and these two indicators can be completed during a creep test.

In the test of the creep performance of the traditional strain gauge load cell, only one load cell can be loaded at a time, and the load cell cannot realize automatic input and output, which requires many staff and low production efficiency. In order to overcome the deficiencies of the existing creep test of strain gauge load cells, people propose to design a system for automatic loading and testing of load cell creep to improve production efficiency and increase test accuracy. For example, in the Chinese patent application number 201110443493.2, a multi-head electronic high-temperature creep endurance strength testing machine is disclosed. The frame of this technical solution is provided with two or more tensile connecting devices for constraining the sample. Each tensile connection device of the testing machine is independently controlled, and can perform endurance or creep tests respectively. Although this technical solution can realize multiple creep experiments to be carried out simultaneously, when the number of tensile connection devices is large, multiple people are needed to cooperate to complete the test, increasing personnel and reducing efficiency, so there are technical defects in this technical solution. The technical solutions beyond the multi-head creep testing machine provided by the above-mentioned patents rarely involve the technical solutions using multi-station creep loading testing devices.

The utility model discloses a creep test loading device for a two-station strain type weighing sensor. Two stations are tested at the same time, which can effectively improve the efficiency of testing the strain type weighing sensor. , realize the uninterrupted and continuous testing of the load chain on the strain gauge load cell, improve the testing efficiency and reduce the testing time.

Utility model content

The purpose of this utility model is to provide a two-station strain type load cell creep test loading device for the deficiencies of the prior art, through which the load test of the strain type load cell is carried out synchronously through the two stations, and at the same time, through The loading table rotating around the center realizes the continuous testing of the loading chain on the strain gauge load cell, which improves the testing efficiency and reduces the testing time.

The technical problems to be solved by the utility model are realized by the following technical solutions.

A device for creep loading of a two-station strain type load cell. The creep load test device of the utility model includes an upper platform, a support frame, a first loading chain, a second loading chain, a strain type load cell, and a rotating device. , display screen, loading platform, stand. The first loading chain and the second loading chain have the same structure and are hingedly installed on the upper platform; the rotating device is installed on the loading platform; the loading platform is installed on the stand; the supporting frame It is used to connect the upper platform and the loading platform, and at the same time, it can be used to install the display screen; the display screen is provided with buttons, which can control and record the loading test; the strain gauge load cells include I, II, III , No. IV strain gauge load cell; the strain gauge load cell has a certain test range.

The first loading chain includes a tension-compression two-way cylinder, an upper connection plate, a lower connection plate, a test head, a weight connecting rod, and a test weight; the upper end of the tension-compression two-way cylinder is hingedly installed on the upper platform, and the lower end is hinged Installed on the upper connecting plate; the upper connecting plate and the lower connecting plate are connected by bolts; the test head is installed on the lower connecting plate by bolts; the upper end of the weight connecting rod is installed on the lower connecting plate by bolts ; The test weight is installed at the lower end of the weight connecting rod.

The rotating device includes a driving gear, a driven gear, an upper rotating plate, a thrust ball bearing, a loading table tray, and a driving motor; the loading platform is provided with a motor base for installing a driving motor; the loading There is a round hole on the platform for the passage of the weight connecting rod; the loading platform is provided with a ring guide rail; the loading table tray is welded on the upper turning plate; the thrust ball bearing is installed on the ring On the guide rail, the upper turning plate is installed on the thrust ball bearing; the driven gear is fixedly connected to the upper turning plate through a pin shaft, and the driven gear is connected to the driving gear through gear meshing; the loading A fixture is provided on the table tray, and the fixture includes an upper fixture and a lower fixture for positioning the strain gauge load cell.

When in use, the worker stands on one side of the loading platform, installs and fixes a set of strain gauge load cells on the loading platform through the upper and lower clamps, and then rotates to the loading chain under the control of the rotating device. The first loading chain and the second loading chain are used to conduct relevant tests. At the same time, the staff installs another set of strain gauge load cells on the loading platform through the upper and lower clamps. After the test is completed , and then under the control of the rotating device, the loading table tray rotates 90°, so that the first set of strain gauge load cells is rotated to the loading and unloading staff, and the staff completes the re-unloading of the first set of strain gauge load cells And installation, at the same time of disassembly, the first load chain and the second load chain are tested for another group of strain gauge load cells, and after the test is completed, they are rotated for loading and unloading, and this cycle is repeated.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The utility model adopts two stations for loading and testing at the same time, which not only has a high degree of automation, but also effectively realizes the reduction of staff and increasing efficiency. After using the loading and testing device provided by the utility model, it takes a short time, is convenient to disassemble, and has high efficiency. Under the condition of a certain time, the daily output is obviously increased;

(2) The utility model adopts the loading table and the rotating device rotating around the center to realize the uninterrupted continuous test of the load chain on the strain gauge load cell, thereby improving the efficiency of the creep test and reducing the test time. In addition, after using the utility model, The installation and disassembly efficiency of the test is significantly improved, and the influence of man on the loading chain is reduced, and the accuracy is improved;

(3) The system of the utility model is simple, has low maintenance cost, and can be widely popularized and applied.

Description of drawings

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

Fig. 2 is the structural representation of the first loading chain of the present utility model;

Fig. 3 is the structural representation of the loading platform of the present utility model;

Fig. 4 is the structural representation of the rotating device of the present utility model;

Fig. 5 is a schematic diagram of the explosion structure of the rotating device of the present invention;

Fig. 6 is a partial structural schematic diagram of the rotating device of the present invention;

Fig. 7 is a structural schematic diagram of the change of the loading station of the present invention.

In the figure: 1. upper platform; 2. support frame; 3. first loading chain; 4. second loading chain; 5. strain gauge load cell; 6. rotating device; 7. display screen; 8. loading platform; 9. vertical frame; 301. tension and pressure bidirectional cylinder; 302. upper connecting plate; 303. lower connecting plate; 304. test head; 305. weight connecting rod; 306. test weight; 601. driving gear; 602. from Moving gear; 603. Upper turning plate; 604. Thrust ball bearing; 605. Loading table tray; 606. Driving motor; 801. Motor base; 802. Round hole; 803. Ring guide rail.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments and illustrations.

The creep test loading device of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, for a device for creep loading of a two-station strain type load cell, the creep loading test device of the present invention includes an upper platform 1, a support frame 2, a first loading chain 3, and a second loading chain 4. Strain type load cell 5, rotating device 6, display screen 7, loading platform 8, stand 9. The first loading chain 3 and the second loading chain 4 have the same structure and are hingedly installed on the upper platform 1; the rotating device 6 is installed on the loading platform 8; the loading platform 8 is installed on the stand 9 above; the support frame 2 is used to connect the upper platform 1 and the loading platform 8, and at the same time, can be used to install the display screen 7; the display screen 7 is provided with buttons, which can control and record the loading test; The strain gauge load cell includes No. I, II, III, and IV strain gauge load cells 5; the strain gauge load cell 5 has a certain test range.

Referring to Fig. 2, the first loading chain 3 includes a tension-compression two-way cylinder 301, an upper connection plate 302, a lower connection plate 303, a test head 304, a weight connecting rod 305, and a test weight 306; The upper end of the cylinder 301 is hingedly installed on the upper platform 1, and the lower end is hingedly installed on the upper connecting plate 302; the upper connecting plate 302 and the lower connecting plate 303 are connected by bolts; the test head 304 is installed on the lower connecting plate 303 by bolts Above; the upper end of the weight connecting rod 305 is installed on the lower connecting plate 303 through bolts; the test weight 306 is installed on the lower end of the weight connecting rod 305 .

Referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the rotating device 6 includes a driving gear 601, a driven gear 602, an upper turning plate 603, a thrust ball bearing 604, a loading table tray 605, and a driving motor 606; The loading platform 8 is provided with a motor base 801 for installing the drive motor 606; the loading platform 8 is provided with a round hole 802 for passing the weight connecting rod 305; An annular guide rail 803 is provided; the loading table tray 605 is welded on the upper rotating plate 603; the thrust ball bearing 604 is installed on the annular guide rail 803, and the upper rotating plate 603 is installed on the thrust ball bearing 604; The driven gear is fixedly connected to the upper rotating plate 603 through a pin shaft, and the driven gear 602 is connected to the driving gear 601 through gear meshing; the loading table tray 605 is provided with a clamp, and the clamp includes The upper clamp 607 and the lower clamp 608 are used for positioning the strain gauge load cell 7 .

Referring to FIG. 7 , when in use, the worker stands on one side of the loading platform 8, installs and fixes the strain gauge load cell 5 on the loading platform 8 through the upper clamp 607 and the lower clamp 608 at the station I and station III. Then, under the control of the rotating device 6, it is rotated to the loading chain, and the first loading chain 3 and the second loading chain 4 are used to perform related tests. At the same time, the staff will install the strain gauge load cell 5 At station II and station IV, after the upper fixture 607 and the lower fixture 608 are installed and fixed on the loading platform 8, after the test is completed, under the control of the rotating device 6, the loading platform tray 605 is rotated 90°, thereby The strain gauge load cell 5 at the station I and station III is rotated to the loading and unloading staff, and the staff completes the re-unloading and installation of the strain gauge load cell 5. While loading and unloading, the first loading chain 3 Test the strain gauge load cell 5 of station II and station IV with the second loading chain 4, and then rotate and load and unload after the test is completed, so as to work in a cycle.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. a station strain gauge load cell creep loading device for testing, comprise upper mounting plate, bracing frame, the first loading chain, the second loading chain, strain gauge load cell, whirligig, display screen, weighted platform, stand, described first loads chain, the second loading chain structure is identical, all be hingedly mounted on upper mounting plate, described whirligig is arranged on weighted platform; Described weighted platform is arranged in stand; Described strain gauge load cell comprises I, II, III, IV strain gauge load cell, it is characterized in that: described whirligig comprises driving gear, follower gear, upper rotating plate, thrust ball bearing, loading bench pallet, drive motor; Described weighted platform is provided with motor base; Described weighted platform is provided with circular hole; Described weighted platform is provided with ring-shaped guide rail; Described loading bench pallet is welded on upper rotating plate; Described thrust ball bearing is arranged on ring-shaped guide rail, and described upper rotating plate is arranged on thrust ball bearing; Described follower gear is fixedly connected with upper rotating plate by bearing pin, and described follower gear is connected with driving gear by gears meshing; Described loading bench pallet is provided with fixture.

2. a kind of two station strain gauge load cell creep loading device for testing according to claim 1, is characterized in that: described first loads chain comprises tension compression bidirectional cylinder, upper junction plate, lower connecting plate, measuring head, counterweight connecting link, test counterweight; Described tension compression bidirectional cylinder upper end thereof is arranged on upper mounting plate, and lower end is hingedly mounted on upper junction plate; Described upper junction plate and lower connecting plate are bolted; Described measuring head is arranged on lower connecting plate by bolt; The upper end of described counterweight connecting link is arranged on lower connecting plate by bolt; Described test counterweight is arranged on the lower end of counterweight connecting link.