Metering, calibrating and detecting device for mechanical instrument

Abstract

The utility model discloses a mechanical instrument metering calibration detection device which comprises a rack, a detection cylinder is installed on the rack through an adjusting mechanism, a movable plate is connected in the detection cylinder in a sliding mode, a spring is installed in the detection cylinder, the output end of the spring is connected with the movable plate, a hook is installed at the bottom of the movable plate, and a threaded rod is connected to the detection cylinder in a threaded mode. The threaded rod is rotationally connected with the moving plate, an annular groove is formed in the moving plate, and an annular plate is slidably connected into the annular groove. The threaded rod in threaded connection with the detection cylinder drives the moving plate to ascend to extrude the spring, so that after a specified value is reached, the indicated value at the moment can be clamped at the specified value through threaded connection of the threaded rod and the detection cylinder, and reading is facilitated; by arranging a first supporting rod, a second supporting rod and a spring, when the movable plate gradually moves upwards to compress the spring, the first supporting rod can generate a certain slow force effect on the threaded rod through the driving disc, and the threaded connection position of the threaded rod and the detection cylinder is not prone to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical instrument calibration detection, in particular to a mechanical instrument metrological calibration detection device. Background Art

[0002] Mechanical instruments are a general term for all mechanical instruments that are based on the law of force and force effect. Common mechanical instruments include measuring instruments such as scales, push-pull dynamometers, torsion gauges, hardness gauges and vibrometers. Mechanical instrument calibration mainly involves metrological calibration of mass, torque, pressure, and other instruments. Common mechanical instruments include tension spring dynamometers, which are devices that measure the magnitude of applied force through the proportional relationship between the deformation of a spring and the external force. The hook at the bottom of the tension spring dynamometer is hooked onto the object being measured so that its spring is pulled and stretched by the gravity of the object being measured, and the gravity of the object being measured is obtained.

[0003] The mechanical instrument measurement calibration detection device in the prior art lacks a self-locking function, so that after the measuring instrument removes the object to be measured, the pointer will reset, affecting the read measurement value. When performing large numerical detection, there is a lack of a force relief mechanism, which makes it easy for the hand to shake when manually stretching to detect large values, resulting in inaccurate readings. Therefore, it does not meet the existing needs. In this regard, we propose a mechanical instrument measurement calibration detection device. Utility Model Content

[0004] Based on this, it is necessary to provide a mechanical instrument measurement, calibration and detection device to address the above technical issues.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a mechanical instrument metrology calibration detection device, including a frame, a detection cylinder is installed on the frame through an adjusting mechanism, a movable plate is slidably connected in the detection cylinder, a spring is installed in the detection cylinder, the output end of the spring is connected to the movable plate, and a hook is installed at the bottom of the movable plate. A threaded rod is threadedly connected to the detection cylinder, the threaded rod is rotatably connected to the movable plate, an annular groove is provided in the movable plate, an annular plate is slidably connected in the annular groove, and the bottom of the threaded rod is connected to the annular plate; a pressure cylinder 1 and a pressure cylinder 2 are installed on the frame, the pressure cylinder 1 is connected to the pressure cylinder 2, the inner wall diameter of the pressure cylinder 1 is smaller than the inner wall diameter of the pressure cylinder 2, a support rod 1 and a support rod 2 are slidably and sealably connected in the pressure cylinder 1, the support rod 1 and the support rod 2 are connected by a spring 2, the pressure cylinder 2 is slidably and sealably connected, the output end of the pressure rod is connected to the movable plate, a driving disk is installed on the top of the threaded rod, and the support rod 1 and the driving disk are matched.

[0006] Preferably, the adjustment mechanism comprises an adjustment block, which is mounted on the frame and located at both ends of the detection cylinder, the adjustment block is threadedly connected with a bolt, the detection cylinder is provided with a plurality of threaded holes, and the bolt is threadedly connected to one of the threaded holes.

[0007] Preferably, a through slot is provided on the detection cylinder, a scale is provided on one side of the through slot, and an indicating block is installed on the movable plate.

[0008] Preferably, a plurality of universal beads are rotatably connected to the annular plate.

[0009] Preferably, a plurality of universal beads 2 are rotatably connected to the support rod 1.

[0010] Preferably, the driving disc is provided with anti-slip grooves.

[0011] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0012] The threaded rod connected to the detection tube threadably drives the moving plate to rise and squeeze the spring, so that after reaching the specified value, the threaded rod is connected to the detection tube threadably, so that the indicated value at this time can be stuck here, which is convenient for reading;

[0013] By arranging support rod one, support rod two and a spring, when the movable plate gradually moves upward to compress the spring, support rod one can produce a certain deceleration effect on the threaded rod through the driving disk, so that the threaded connection between the threaded rod and the detection tube is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0015] Figure 2 This is a front cross-sectional view of a detection tube according to an embodiment of the utility model;

[0016] Figure 3 For an embodiment of the utility model Figure 2 Enlarged view of point A in the middle;

[0017] In the figure, 1, frame; 2, detection cylinder; 3, moving plate; 4, spring; 5, threaded rod; 6, annular groove; 7, annular plate; 8, pressure cylinder one; 9, pressure cylinder two; 10, support rod one; 11, support rod two; 12, spring two; 13, pressure rod; 14, driving plate; 15, adjusting block; 16, bolt; 17, threaded hole; 18, through groove; 19, scale; 20, indicator block; 21, universal ball one; 22, universal ball two. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] See also Figures 1 to 3 The embodiment of the present application provides a mechanical instrument measurement and calibration detection device, including a frame 1, a detection cylinder 2 is installed on the frame 1 through an adjustment mechanism, a moving plate 3 is slidably connected in the detection cylinder 2, a spring 4 is installed in the detection cylinder 2, the output end of the spring 4 is connected to the moving plate 3, a hook is installed at the bottom of the moving plate 3, a threaded rod 5 is threadedly connected to the detection cylinder 2, the threaded rod 5 is rotatably connected to the moving plate 3, an annular groove 6 is provided in the moving plate 3, an annular plate 7 is slidably connected in the annular groove 6, and the bottom of the threaded rod 5 is connected to the annular plate 7; a pressure device is installed on the frame 1. Cylinder 1 8 and pressure cylinder 2 9, pressure cylinder 1 8 and pressure cylinder 2 9 can be pneumatic cylinders, pressure cylinder 1 8 is connected to pressure cylinder 2 9, the inner wall diameter of pressure cylinder 1 8 is smaller than the inner wall diameter of pressure cylinder 2 9, support rod 10 and support rod 2 11 are connected in a sliding seal in pressure cylinder 1 8, support rod 10 and support rod 2 11 are connected through spring 2 12, pressure rod 13 is connected in a sliding seal in pressure cylinder 2 9, the output end of pressure rod 13 is connected to moving plate 3, a driving disk 14 is installed on the top of threaded rod 5, and support rod 10 and driving disk 14 are arranged in coordination. The force measuring range of tension spring dynamometer itself is small, so threaded rod 4 and annular plate 6 of this device are not easy to be damaged; threaded rod 5 has no thread at the bottom, and is rotatably connected to moving plate 3 through a bearing connection structure.

[0020] In this embodiment, the detection tube 2 can be placed at different heights through the adjustment mechanism, so that the tension test of the tension dynamometer of springs of different lengths can be performed. The threaded rod 5 is rotated to move it upward relative to the detection tube 2, so that the annular plate 7 in the annular groove 6 on the movable plate 3 can drive the movable plate 3 to move upward and squeeze the spring 4; the annular plate 7 is connected to the annular groove 6 by rotation, so that the spring 4 will only be compressed upward by the movable plate 3 without deflection; so that after the threaded rod 5 stops driving the movable plate 3 to move upward, the threaded connection between the threaded rod 5 and the detection tube 2 allows the value at this time to be stuck here, so that it is convenient to take the reading. When the movable plate 3 moves upward, it can drive the pressure rod 13 to move upward together, thereby generating pressure in the pressure cylinder 1 8 and the pressure cylinder 2 9, squeezing out the support rod 10 and the support rod 2 11, and because the inner wall diameter of the pressure cylinder 1 8 is smaller than the inner wall diameter of the pressure cylinder 2 9, the support rod 10 will abut against the driving disk 14 only after the movable plate 3 is lifted to a certain height, thereby generating a certain upward pressure on the threaded rod 5 through the driving disk 14 to balance the downward pressure caused by the compression of the spring 4, and because a spring 2 12 is provided between the support rod 10 and the support rod 2 11, the greater the upward distance of the movable plate 3, the greater the squeezing force of the support rod 10 on the driving disk 14. The deceleration mechanism composed of support rod 10, support rod 2 11, etc., in other detection devices that are not equipped with a self-locking function and rely entirely on human pulling, such as the threaded rod 5 in this device is replaced with a straight rod. When the movable plate 3 is moved upward by pulling the straight rod, the support rod 10 can play a deceleration role on the straight rod to balance the elastic force of the spring 4. In this device, the deceleration mechanism plays a deceleration protection role in protecting the threaded connection between the threaded rod 5 and the detection tube 2.

[0021] In some embodiments, in order to facilitate the detection of spring tension dynamometers of different lengths, an adjustment mechanism is provided including an adjustment block 15, which is mounted on the frame 1 and located at both ends of the detection cylinder 2. Bolts 16 are threadedly connected to the adjustment block 15, and the detection cylinder 2 is provided with a plurality of threaded holes 17, and the bolts 16 are threadedly connected to one of the threaded holes 17. After the detection cylinder 2 slides on the frame 1 to different heights, the bolts 16 are threadedly connected to the threaded holes 17 at different heights, so that the detection cylinder 2 can be fixed.

[0022] In some embodiments, in order to facilitate reading, a through slot 18 is provided on the detection tube 2 , a scale 19 is provided on one side of the through slot 18 , and an indicator block 20 is installed on the movable plate 3 .

[0023] In some embodiments, in order to reduce the friction between the annular plate 7 and the annular groove 6, a plurality of universal beads 21 are rotatably connected to the annular plate 7.

[0024] In some embodiments, in order to reduce the friction between the support rod 10 and the driving disk 14, a plurality of universal beads 22 are rotatably connected to the support rod 10.

[0025] In some embodiments, in order to facilitate driving the threaded rod 5 to rotate through the driving disk 14, anti-slip grooves are provided on the driving disk 14.

[0026] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A mechanical instrument measurement and calibration detection device, comprising a frame (1), a detection cylinder (2) is mounted on the frame (1) via an adjustment mechanism, a moving plate (3) is slidably connected in the detection cylinder (2), a spring (4) is mounted in the detection cylinder (2), an output end of the spring (4) is connected to the moving plate (3), and a hook is mounted at the bottom of the moving plate (3), characterized in that: The detection cylinder (2) is threadedly connected with a threaded rod (5), the threaded rod (5) is rotatably connected to the movable plate (3), an annular groove (6) is provided in the movable plate (3), an annular plate (7) is slidably connected in the annular groove (6), and the bottom of the threaded rod (5) is connected to the annular plate (7); a pressure cylinder (8) and a pressure cylinder (9) are installed on the frame (1), the pressure cylinder (8) is connected to the pressure cylinder (9), the inner wall diameter of the pressure cylinder (8) is smaller than the inner wall diameter of the pressure cylinder (9), a support rod (10) and a support rod (11) are slidably connected in the pressure cylinder (8), the support rod (10) and the support rod (11) are connected via a spring (12), a pressure rod (13) is slidably connected in the pressure cylinder (9), the output end of the pressure rod (13) is connected to the movable plate (3), a driving disk (14) is installed on the top of the threaded rod (5), and the support rod (10) and the driving disk (14) are arranged in coordination.

2. The mechanical instrument measurement calibration detection device according to claim 1, characterized in that: The adjustment mechanism comprises an adjustment block (15), the adjustment block (15) being mounted on the frame (1) and located at both ends of the detection tube (2), a bolt (16) being threadedly connected to the adjustment block (15), a plurality of threaded holes (17) being provided on the detection tube (2), and the bolt (16) being threadedly connected to one of the threaded holes (17).

3. The mechanical instrument measurement calibration detection device according to claim 1, characterized in that: The detection cylinder (2) is provided with a through slot (18), a scale (19) is provided on one side of the through slot (18), and an indicator block (20) is mounted on the movable plate (3).

4. The mechanical instrument measurement calibration detection device according to claim 1, characterized in that: A plurality of universal beads (21) are rotatably connected to the annular plate (7).

5. The mechanical instrument measurement calibration detection device according to claim 1, characterized in that: The support rod 1 (10) is rotatably connected to a plurality of universal beads 2 (22).

6. The mechanical instrument measurement calibration detection device according to claim 1, characterized in that: The driving disc (14) is provided with anti-slip grooves.

Images