Wide-range superposition type force standard machine

Abstract

The utility model relates to a wide-range superposition type force standard machine, and relates to the technical field of detection equipment, the wide-range superposition type force standard machine comprises a base and a reaction frame, a fixed cross beam is arranged above the base, four corners between the base and the fixed cross beam are connected through stand columns, a movable cross beam is arranged above the fixed cross beam, and the movable cross beam movably sleeves the stand columns; a driving mechanism for driving the movable cross beam to move up and down is arranged between the fixed cross beam and the movable cross beam, the reaction frame comprises a reaction frame lower cross beam arranged between the fixed cross beam and the base and a reaction frame upper cross beam arranged above the movable cross beam, and four corners between the reaction frame lower cross beam and the reaction frame upper cross beam are connected through reaction rods; a standard sensor assembly used for detection and calibration is arranged between the reaction frame upper cross beam and the movable cross beam. According to the invention, the measurement range is expanded, the test stability is ensured, and the test precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of detection equipment, and in particular to a wide-range superposition force standard machine. Background Art

[0002] There are four common types of force standard machines: deadweight, lever, hydraulic, and superposition.

[0003] The superposition force standard machine is a measuring instrument used in the basic disciplines of engineering and technical science, material science, and mechanical engineering.

[0004] At present, most of the mainstream superposition force standard machines in the market use single cylinders and standard sensors to detect, calibrate and calibrate the measured sensors. The standard sensor is placed on the top of the beam, and the bottom is moved up and down by the lifting cylinder (mostly by screw synchronous belt or lifting cylinder) to calibrate the measured sensor. This kind of force standard machine has been widely used in recent years. The main reason is that it is low in cost and high in work efficiency, so it is used to detect various column sensors, weighing sensors, and spoke sensors. However, there are also certain problems with the force standard machines on the market. Usually, the detection range of a measured sensor is only 10%-100% of the full scale, the measurement range is limited, and it cannot measure multiple ranges. In addition, in many cases, it can only be verified and calibrated by pressing. The method is single and cannot meet the multi-range, tension and compression bidirectional measurement methods. The detection range of the superposition force standard using a standard sensor is limited. With the continuous development of science and technology, the use of multi-range medium and large force sensors in bridge construction projects, large lifting machinery and high-speed railway construction projects is becoming more and more extensive. It is very important to quickly, accurately and calibrate the detection of medium and force sensors. Therefore, it is necessary to develop a wide-range superposition force standard machine. Utility Model Content

[0005] In order to solve the problems in the prior art that the existing superposition type force standard machine has a limited detection range and a single detection method, the present application provides a wide-range superposition type force standard machine.

[0006] A wide-range superimposed force standard machine provided in the present application adopts the following technical solution: a wide-range superimposed force standard machine, comprising a base and a reaction frame, a fixed beam is arranged above the base, the four corners between the base and the fixed beam are connected by columns, a movable beam is arranged above the fixed beam, the movable beam is movably mounted on the column, a driving mechanism for driving the movable beam to move up and down is arranged between the fixed beam and the movable beam, the reaction frame comprises a reaction frame lower beam arranged between the fixed beam and the base and a reaction frame upper beam arranged above the movable beam, the four corners between the reaction frame lower beam and the reaction frame upper beam are connected by reaction rods, and a standard sensor assembly for detection and calibration is arranged between the reaction frame upper beam and the movable beam.

[0007] Optionally, the standard sensor assembly includes a protective shell fixedly mounted on the movable crossbeam, a micro-cylinder is disposed on the inner bottom surface of the protective shell, a small force reference standard sensor is disposed above the micro-cylinder, a pressure plate is movably disposed above the protective shell, and a large force reference standard sensor is disposed above the pressure plate.

[0008] By adopting the above technical solution, setting a small force reference standard sensor and a large force reference standard sensor can realize both large-range testing and small-range testing, which is easy to operate. In addition, the small force reference standard sensor ensures the stability of the small-range test and improves the test accuracy.

[0009] Optionally, an adapter plate is connected to the end of the piston rod in the micro-cylinder, and the adapter plate abuts against the bottom surface of the small-force reference standard sensor.

[0010] By adopting the above technical solution, the micro cylinder is connected to the small force reference standard sensor through the adapter plate, so that when the micro cylinder drives the small force reference standard sensor to move upward, the small force reference standard sensor is evenly stressed, thereby ensuring the measurement accuracy of the small force reference standard sensor.

[0011] Optionally, a linear bearing is provided at the connection between the column and the movable crossbeam.

[0012] By adopting the above technical solution, a linear bearing is provided to reduce the friction between the column and the movable crossbeam.

[0013] Optionally, the driving mechanism adopts a lifting cylinder, the lifting cylinder is fixedly connected to the fixed crossbeam, and the end of the piston rod in the lifting cylinder is connected to the movable crossbeam.

[0014] Optionally, matching detection plates are provided on the bottom surface of the fixed crossbeam and the upper surface of the lower crossbeam of the reaction frame.

[0015] Optionally, a tension detection assembly is arranged between the lower cross beam of the reaction frame and the base, and the tension detection assembly includes two symmetrically arranged connecting frames, the two connecting frames respectively connect the lower cross beam of the reaction frame and the base, and the connecting frames are U-shaped and a pin is arranged in the middle.

[0016] By adopting the above technical solution, the tension detection assembly is used to detect the tension sensor, both ends of the tension sensor are connected to the connecting frame through the pins, and the tension is applied to the tension sensor through the connecting frame for detection.

[0017] Optionally, the connecting frame is connected to the lower cross beam of the reaction frame or the base via a connecting screw.

[0018] By adopting the above technical solution, the disassembly, assembly and adjustment of the connecting frame are facilitated, so that the connecting frame is suitable for tension sensors of different models.

[0019] Optionally, the small force reference standard sensor is composed of a plurality of multi-column sensors connected together.

[0020] By adopting the above technical solution, the small force reference standard sensor is composed of a plurality of multi-column sensors connected to improve the detection accuracy.

[0021] Optionally, an upper top plate is connected to the upper end of the column, and a plurality of lifting rings are provided on the upper top plate.

[0022] By adopting the above technical solution, an upper top plate and a lifting ring are provided to facilitate the lifting and transportation of the force standard machine.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. A standard sensor assembly is provided in this application, and a small force reference standard sensor and a large force reference standard sensor are provided in the standard sensor assembly, which can measure both a large range and a small range, is easy to operate, expands the measurement range, ensures the stability of the test, and improves the accuracy of the test;

[0025] 2. In this application, a detection plate is set between the fixed beam and the lower beam of the reaction frame, and a tension detection component is set between the lower beam of the reaction frame and the base, which realizes both pressure detection and tension detection, expands the application scope of the force standard machine, and the device has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a wide-range superposition force standard machine in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the internal structure of a wide-range superposition force standard machine in an embodiment of the present application.

[0028] Figure 3 It is a wide range superposition force standard machine in the embodiment of the present application. Figure 2 A magnified schematic diagram of local A.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Base; 2. Reaction frame; 3. Fixed beam; 4. Movable beam; 5. Upper beam of reaction frame; 6. Column; 7. Reaction rod; 8. Lifting cylinder; 9. Standard sensor assembly; 91. Reference standard sensor for large force values; 92. Pressure plate; 93. Protective shell; 94. Reference standard sensor for small force values; 95. Micro cylinder; 96. Adapter plate; 10. Detection plate; 11. Tension detection assembly; 111. Connecting frame; 112. Latch; 113. Connecting screw; 12. Upper top plate; 13. Lower beam of reaction frame. DETAILED DESCRIPTION

[0030] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0031] See also Figure 1-3 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] This embodiment discloses a wide-range superposition force standard machine.

[0034] Reference Figure 1 and Figure 2A wide-range superposition force standard machine includes a base 1 and a reaction frame 2. A fixed beam 3 is arranged above the base 1. The four corners of the fixed beam 3 are connected to the base 1 through four columns 6. The four columns 6 extend upward through the fixed beam 3. A movable beam 4 is arranged above the fixed beam 3. The four corners of the movable beam 4 are movably sleeved on the four columns 6 through linear bearings. An upper top plate 12 is connected to the upper ends of the four columns 6. A lifting ring is arranged above the upper top plate 12. The movable beam 4 is connected to the fixed beam 3 through a driving mechanism. The driving mechanism drives the movable beam 4 to move up and down. Specifically, the driving mechanism adopts a long-stroke lifting cylinder 8. The lifting cylinder 8 is a front flange type and is fixed to the fixed beam 3 by screws. The piston rod of the lifting cylinder 8 passes through the fixed beam 3 and connects the movable beam 4.

[0035] The reaction frame 2 includes a reaction frame lower beam 13 and a reaction frame upper beam 5. The reaction frame lower beam 13 is movably arranged between the fixed beam 3 and the base 1. The reaction frame upper beam 5 is movably arranged above the movable beam 4. The four corners between the reaction frame lower beam 13 and the reaction frame upper beam 5 are connected by reaction rods 7. The reaction rods 7 movably penetrate the movable beam 4 and the fixed beam 3. A standard sensor assembly 9 is arranged between the movable beam 4 and the reaction frame upper beam 5. A tension detection assembly 11 is arranged between the reaction frame lower beam 13 and the base 1.

[0036] Reference Figure 2 The tension detection component 11 includes two connecting frames 111 symmetrically arranged in the upper and lower parts. The connecting frames 111 are U-shaped and have a latch 112 in the middle. The two ends of the tension sensor are clamped in the middle of the connecting frames 111 and then the connecting frames 111 and the tension sensor are fixed by the latch 112 to improve the strength of the connection. The two connecting frames 111 are connected to the lower cross beam 13 or the base 1 of the reaction frame by a connecting screw 113. By rotating the connecting screw 113, the distance between the two connecting frames 111 can be adjusted to make it suitable for the detection of tension sensors of different models.

[0037] Reference Figure 3 The standard sensor assembly 9 includes a protective shell 93 fixedly connected to the upper surface of the movable crossbeam 4, a micro-cylinder 95 is arranged in the middle of the protective shell 93, an adapter plate 96 is connected to the upper end of the piston rod in the micro-cylinder 95, a small force reference standard sensor 94 is connected above the adapter plate 96, and the small force reference standard sensor 94 is formed by connecting 3-6 smaller multi-column sensors with higher accuracy. The accuracy of the entire small force reference standard sensor 94 can reach 0.05% FS. A pressure plate 92 is arranged at the opening above the protective shell 93, and the pressure plate 92 is mounted above the protective shell 93. A large force reference standard sensor 91 is fixedly connected above the pressure plate 92.

[0038] The implementation principle of a wide range superposition force standard machine in this embodiment is:

[0039] When testing the sensor to be tested, the sensor to be tested is placed on the test plate 10 between the lower crossbeam 13 of the reaction frame and the fixed crossbeam 3. When a large-scale test is performed, the lifting cylinder 8 drives the movable crossbeam 4 to move upward along the column 6, and the movable crossbeam 4 drives the standard sensor assembly 9 to move upward. When the large-force reference standard sensor 91 in the standard sensor assembly 9 contacts the bottom surface of the upper crossbeam 5 of the reaction frame, the movable crossbeam 4 continues to move upward, and the movable crossbeam 4 lifts the upper crossbeam 5 of the reaction frame upward through the standard sensor assembly 9. The upper crossbeam 5 of the reaction frame drives the lower crossbeam 13 of the reaction frame and the sensor to be tested to move upward through the reaction rod 7 until the upper end of the sensor to be tested contacts the bottom surface of the fixed crossbeam 3. At this time, the movable crossbeam 4 continues to move upward, and the lower crossbeam 13 of the reaction frame moves upward accordingly to apply pressure to the sensor to be tested. Since the movable crossbeam 4 and the lower crossbeam 13 of the reaction frame move synchronously, the large-force reference standard sensor 91 and the sensor to be tested are The pressure on the sensor is consistent, so the large force reference standard sensor 91 is used to detect and calibrate the sensor to be tested; when performing a small range test, the micro-cylinder 95 inside the protective shell 93 lifts the small force reference standard sensor 94 upward through the adapter plate 96, and the small force reference standard sensor 94 contacts the pressure plate 92 and lifts the pressure plate 92 upward, and the pressure plate 92 drives the large force reference standard sensor 91 to move upward to lift the upper crossbeam 5 of the reaction frame upward, and the entire reaction frame 2 is driven upward by the upper crossbeam 5 of the reaction frame, and the lower crossbeam 13 of the reaction frame drives the sensor to be tested to move upward and contact the detection plate 10 on the bottom of the fixed crossbeam 3, and the micro-cylinder 95 continues to lift upward, and the fixed crossbeam 3 and the lower crossbeam 13 of the reaction frame apply pressure to the sensor to be tested. At this time, the pressure on the sensor to be tested is consistent with that of the small force reference standard sensor 94, so the sensor to be tested is detected and calibrated by the small force reference standard sensor 94.

[0040] Similarly, when testing the tension sensor, the tension sensor is fixed between the lower crossbeam 13 of the reaction frame and the base 1 through two connecting frames 111. When performing a large-scale test, the lifting cylinder 8 drives the movable crossbeam 4 to move upward along the column 6, and the movable crossbeam 4 drives the standard sensor assembly 9 to move upward. When the large-force reference standard sensor 91 in the standard sensor assembly 9 contacts the bottom surface of the upper crossbeam 5 of the reaction frame, the movable crossbeam 4 continues to move upward, and the movable crossbeam 4 lifts the upper crossbeam 5 of the reaction frame upward through the standard sensor assembly 9. The upper crossbeam 5 of the reaction frame drives the lower crossbeam 13 of the reaction frame to move upward through the reaction rod 7. The lower crossbeam 13 of the reaction frame and the base 1 move to apply tension to the tension sensor to be tested. Since the movable crossbeam 4 moves synchronously with the lower crossbeam 13 of the reaction frame, the large-force reference standard sensor 9 1 is consistent with the tension applied to the tension sensor to be measured, so that the tension sensor to be measured is detected and calibrated through the large-force reference standard sensor 91; when performing a small-range test, the micro-cylinder 95 inside the protective shell 93 lifts the small-force reference standard sensor 94 upward through the adapter plate 96, and the small-force reference standard sensor 94 contacts the pressure plate 92 and lifts the pressure plate 92 upward, and the pressure plate 92 drives the large-force reference standard sensor 91 to move upward to lift the upper crossbeam 5 of the reaction frame upward, and the entire reaction frame 2 is driven to move upward through the upper crossbeam 5 of the reaction frame, and the lower crossbeam 13 of the reaction frame applies tension to the tension sensor to be measured. At this time, the tension applied to the tension sensor to be measured is consistent with the small-force reference standard sensor 94, so that the tension sensor to be measured is detected and calibrated through the small-force reference standard sensor 94.

[0041] In summary, a standard sensor assembly is provided in the present application, and a small force reference standard sensor and a large force reference standard sensor are provided in the standard sensor assembly, which can measure both a large range and a small range, is easy to operate, ensures the stability of the test, and improves the accuracy of the test; in the present application, a detection plate is provided between the fixed crossbeam and the crossbeam under the reaction frame, and a tension detection assembly is provided between the crossbeam under the reaction frame and the base, which realizes both pressure detection and tension detection, expands the scope of application of the force standard machine, and the device has a simple structure and is easy to use. Therefore, the present application effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0042] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be included in the protection scope of the present application.

Claims

1. A wide range superposition force standard machine, characterized in that: The invention comprises a base (1) and a reaction frame (2), wherein a fixed beam (3) is arranged above the base (1), and the four corners between the base (1) and the fixed beam (3) are connected by columns (6), a movable beam (4) is arranged above the fixed beam (3), and the movable beam (4) is movably sleeved on the column (6), and a driving mechanism for driving the movable beam (4) to move up and down is arranged between the fixed beam (3) and the movable beam (4), and the reaction frame (2) comprises a reaction frame lower beam (13) arranged between the fixed beam (3) and the base (1) and a reaction frame upper beam (5) arranged above the movable beam (4), and the four corners between the reaction frame lower beam (13) and the reaction frame upper beam (5) are connected by reaction rods (7), and a standard sensor assembly (9) for detection and calibration is arranged between the reaction frame upper beam (5) and the movable beam (4).

2. A wide range superposition force standard machine according to claim 1, characterized in that: The standard sensor assembly (9) comprises a protective shell (93) fixedly arranged on the movable crossbeam (4); a micro-cylinder (95) is arranged on the bottom surface of the interior of the protective shell (93); a small force value reference standard sensor (94) is arranged above the micro-cylinder (95); a pressure plate (92) is movably arranged above the protective shell (93); and a large force value reference standard sensor (91) is arranged above the pressure plate (92).

3. A wide range superposition force standard machine according to claim 2, characterized in that: The end of the piston rod in the micro-cylinder (95) is connected to an adapter plate (96), and the adapter plate (96) abuts against the bottom surface of the small force value reference standard sensor (94).

4. A wide range superposition force standard machine according to claim 1, characterized in that: A linear bearing is provided at the connection between the upright column (6) and the movable crossbeam (4).

5. A wide range superposition force standard machine according to claim 1, characterized in that: The driving mechanism adopts a lifting cylinder (8), the lifting cylinder (8) is fixedly connected to the fixed crossbeam (3), and the end of the piston rod in the lifting cylinder (8) is connected to the movable crossbeam (4).

6. A wide range superposition force standard machine according to claim 1, characterized in that: Matching detection plates (10) are provided on the bottom surface of the fixed crossbeam (3) and the upper surface of the lower crossbeam (13) of the reaction frame.

7. A wide range superposition force standard machine according to claim 1, characterized in that: A tension detection assembly (11) is arranged between the lower cross beam (13) of the reaction frame and the base (1), and the tension detection assembly (11) comprises two symmetrically arranged connecting frames (111), the two connecting frames (111) respectively connecting the lower cross beam (13) of the reaction frame and the base (1), and the connecting frames (111) are U-shaped and have a latch (112) arranged in the middle.

8. A wide range superposition force standard machine according to claim 7, characterized in that: The connecting frame (111) is connected to the lower crossbeam (13) of the reaction frame or the base (1) via a connecting screw (113).

9. A wide range superposition force standard machine according to claim 2, characterized in that: The small force value reference standard sensor (94) is composed of a plurality of multi-column sensors connected together.

10. The wide range superposition force standard machine according to claim 1, characterized in that: The upper end of the upright column (6) is connected to an upper top plate (12), and a plurality of lifting rings are provided on the upper top plate (12).

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