Slow descent device for metrological verification

Abstract

The utility model relates to the technical field of metrological verification, and discloses a slow descent device used in metrological verification, which comprises a roller and a tray clamped on the upper surface of a support, the surface of the roller is clamped with a connecting belt used for fixing, the lower surface of the support is clamped with a pressure sensing plate used for weighing, and the pressure sensing plate is clamped on the upper surface of the support. The lower surface of the pressure sensing plate is connected with a weighing table used for supporting in a clamped mode, and the upper surface of the weighing table is fixedly connected with a supporting column used for supporting. According to the slow descending device used in metrological verification, through the arrangement of the tray, the rolling wheels and the connecting belt, the connecting belt is clamped to the surfaces of the rolling wheels, the connecting belt can be clamped to the side face of the tray, the rolling wheels have a certain damping effect, after a heavy object is placed on the tray, the tray can transmit downward force to the connecting belt, the rolling wheels can rotate along with the tray, and the tray can slowly move downwards; therefore, the impact force on the device is reduced, the detection result is more accurate, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metrology verification, in particular to a slow-descent device used in metrology verification. Background Art

[0002] Metrology calibration is an activity carried out by statutory metrology departments or statutory authorized organizations in accordance with calibration procedures, through experiments and providing proof to determine whether the indication error of measuring instruments meets the specified requirements. However, during calibration, the items used for calibration are currently placed directly on the device, which will have a certain impact on the device, affecting the accuracy of the calibration results and the service life of the calibration device.

[0003] Chinese patent announcement No. CN214114814U discloses a slow-descending device for weight measurement and verification, including a frame, a motor is fixedly connected to the bottom end of the inner cavity of the frame, the motor is rotatably connected to a rotating shaft through a belt, both ends of the rotating shaft are rotatably connected to threaded rods through a first bevel gear and a second bevel gear, the threaded rods are threadedly connected to a moving frame, an electric telescopic rod is fixedly connected to the rear part of the upper end surface of the moving frame, one end of the electric telescopic rod is fixedly connected to a first moving plate, the upper end surface of the first moving plate is rotatably connected to a threaded shaft through a hinge, one end of the threaded shaft is provided with a lock nut, and a second moving plate is provided on the upper end surface of the moving frame. The utility model relates to the technical field of slow-descending devices for weight measurement and verification, and the slow-descending device for weight measurement and verification solves the problem that the slow-descending device for weight measurement and verification is inconvenient to move due to the large mass of the weight, which can easily cause damage to the weight device, and detection errors are prone to occur during verification.

[0004] However, the utility model has the following problems when actually used:

[0005] 1. During the calibration, placing the items for calibration directly on the device will produce a certain impact force on the device, affecting the accuracy of the calibration results and the service life of the calibration device;

[0006] 2. The device is large in size and is not convenient to carry and move when conducting surprise inspections on fair scales in different vegetable markets. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In order to overcome the above-mentioned defects of the prior art, the utility model provides a slow-descent device for measurement verification, which solves the problems in the prior art:

[0009] During calibration, placing the items for calibration directly on the device will produce a certain impact force on the device, affecting the accuracy of the calibration results and the service life of the calibration device. The device is large in size and is inconvenient to carry and move when conducting surprise inspections on fair scales in different vegetable markets.

[0010] (II) Technical solution

[0011] To achieve the above objectives, the utility model is implemented through the following technical solutions: a slow descent device used in metrology and calibration, comprising a roller and a tray clamped on the upper surface of a bracket, the surface of the roller is clamped with a connecting belt for fixing, the lower surface of the bracket is clamped with a pressure sensing plate for weighing, the lower surface of the pressure sensing plate is clamped with a weighing platform for support, and the upper surface of the weighing platform is fixedly connected to a pillar for support.

[0012] Optionally, a calculator for calculation is fixedly connected to the side of the weighing platform, and a connection hole for fixation is opened on the surface of the connecting belt.

[0013] Optionally, a fixing block for fixing is fixedly connected to the side surface of the tray, and the inner wall of the connecting hole is clamped on the surface of the fixing block.

[0014] Optionally, a fixing rod for support is fixedly connected to one side of the pillar, and the roller is clamped on the surface of the fixing rod.

[0015] Optionally, a connecting rod for connection is clamped on the inner wall of the bracket, and a limiting block for protection is fixedly connected to one side of the upper surface of the connecting rod.

[0016] Optionally, a connection block for connection is fixedly connected to the upper surface of the pressure sensing plate, a threaded rod for connection is fixedly connected to the upper surface of the connection block, and the inner wall of the bracket is clamped on the surface of the threaded rod.

[0017] (III) Beneficial effects

[0018] The utility model provides a slow-descent device for measurement verification, which has the following beneficial effects:

[0019] 1. The slow-descent device used in metrology verification is provided with a pallet, a roller and a connecting belt. The surface of the roller is clamped with a connecting belt, and the connecting belt can be clamped on the side of the pallet. The roller has a certain damping effect. After placing a heavy object on the pallet, the pallet will transmit a downward force to the connecting belt, and the roller will rotate so that the pallet can slowly move downward, thereby reducing the impact force on the device, making the detection result more accurate, and helping to extend the service life of the device.

[0020] 2. The slow-descent device used in metrology verification is provided with a weighing platform, a pressure-sensing plate and a pallet. The upper surface of the weighing platform is clamped with a pressure-sensing plate for sensing weight, the upper surface of the pressure-sensing plate is clamped with a bracket, and the pallet is clamped on the upper surface of the bracket. The overall structure of the device is relatively simple and the volume is small, which is convenient for staff to carry and move. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the weighing platform of the utility model;

[0024] Figure 4 This is a schematic diagram of the support structure of the utility model.

[0025] In the figure: 1. tray; 2. bracket; 3. connecting rod; 4. limit block; 5. roller; 6. fixing rod; 7. connecting belt; 8. support; 9. connecting hole; 10. pressure sensing plate; 11. weighing platform; 12. calculator; 13. fixing block; 14. threaded rod; 15. connecting block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] In order to reduce the impact force of heavy objects on the device, make the test results more accurate, and help extend the service life of the device;

[0029] See also Figure 1 and Figure 2 The utility model provides a technical solution: a slow-descent device for measurement and verification, comprising a roller 5 and a tray 1 clamped on the upper surface of the bracket 2, the side of the tray 1 is fixedly connected with a fixing block 13 for fixing, the inner wall of the connecting hole 9 is clamped on the surface of the fixing block 13, the surface of the roller 5 is clamped with a connecting belt 7 for fixing, the surface of the roller 5 is clamped with a connecting belt 7, the connecting belt 7 can be clamped on the surface of the fixing block 13 on the side of the tray 1, the roller 5 has a certain damping effect, after placing a heavy object on the tray 1, the tray 1 will transmit a downward force to the connecting belt 7, the roller 5 will rotate with it, so that the tray 1 can slowly move downward until the tension on the connecting belt 7 disappears, at this time the weight of the object is transmitted to the pressure sensing plate 10 through the tray 1, the bracket 2 and the connecting block 15, the weight of the object is displayed on the calculator 12, thereby reducing the impact force of the object on the device, making the detection result more accurate, and helping to extend the service life of the device.

[0030] Embodiment 2:

[0031] In order to make the weighing platform 11 and the bracket 2 connected and fastened, the tray 1 is firmly mounted on the upper surface of the bracket 2;

[0032] See also Figure 1 and Figure 2 The lower surface of the bracket 2 is clamped with a pressure sensing plate 10 for weighing, and the upper surface of the pressure sensing plate 10 is fixedly connected with a connecting block 15 for connection, and the upper surface of the connecting block 15 is fixedly connected with a threaded rod 14 for connection. The inner wall of the bracket 2 is clamped on the surface of the threaded rod 14, and the inner wall of the bracket 2 is clamped with a connecting rod 3 for connection, and one side of the upper surface of the connecting rod 3 is fixedly connected with a limit block 4 for protection. The upper half and the lower half of the connecting block 15 are clamped, and the upper half can be rotated at will. A threaded hole corresponding to the threaded rod 14 is opened on the lower surface of the bracket 2. The upper half of the connecting block 15 is rotated to connect the threaded rod 14 to the inner wall of the bracket 2, so that the weighing platform 11 and the bracket 2 are connected and tightened. The limit block 4 can prevent the device from tilting and causing the tray 1 to slide, so that the tray 1 is firmly installed on the upper surface of the bracket 2.

[0033] Embodiment three:

[0034] In order to facilitate the staff to move and carry, we will go to different places for random inspection. Please refer to Figures 1 to 4 The lower surface of the pressure sensing plate 10 is clamped with a weighing platform 11 for support, and the side of the weighing platform 11 is fixedly connected with a calculator 12 for calculation. The surface of the connecting belt 7 is provided with a connecting hole 9 for fixation. The upper surface of the weighing platform 11 is fixedly connected with a pillar 8 for support, and one side of the pillar 8 is fixedly connected with a fixed rod 6 for support. The roller 5 is clamped on the surface of the fixed rod 6. The upper surface of the weighing platform 11 is clamped with a pressure sensing plate 10 for sensing weight, and the upper surface of the pressure sensing plate 10 is clamped with a bracket 2. The tray 1 is clamped on the upper surface of the bracket 2, and the tray 1 is clamped between the pillars 8. The overall structure of the device is relatively simple and the volume is small, which is convenient for the staff to carry and move.

[0035] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for control such as a computer.

[0036] In the utility model, the working steps of the device are as follows:

[0037] First, place the weighing platform 11 in a suitable position and snap the pressure sensing plate 10 onto the upper surface of the weighing platform 11. Next, align the connecting holes 9 with the fixing blocks 13 and snap the connecting belt 7 onto the side of the pallet 1. Then, connect the bracket 2 to the upper surface of the pressure sensing plate 10 via the connecting blocks 15 and the threaded rods 14. Finally, place a heavy object onto the upper surface of the pallet 1 to slowly move the pallet 1 downward.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slow-descent device for use in metrological verification, comprising a roller (5) and a tray (1) clamped on the upper surface of a bracket (2), characterized in that: The surface of the roller (5) is clamped with a connecting belt (7) for fixing, the lower surface of the bracket (2) is clamped with a pressure sensing plate (10) for weighing, the lower surface of the pressure sensing plate (10) is clamped with a weighing platform (11) for supporting, and the upper surface of the weighing platform (11) is fixedly connected with a supporting pillar (8).

2. The descent control device for measurement verification according to claim 1, characterized in that: A calculator (12) for calculation is fixedly connected to the side of the weighing platform (11), and a connection hole (9) for fixation is opened on the surface of the connecting belt (7).

3. The descent control device for measurement verification according to claim 2 is characterized in that: A fixing block (13) for fixing is fixedly connected to the side surface of the tray (1), and the inner wall of the connecting hole (9) is clamped on the surface of the fixing block (13).

4. The descent control device for measurement verification according to claim 1 is characterized in that: A fixing rod (6) for support is fixedly connected to one side of the pillar (8), and the roller (5) is clamped on the surface of the fixing rod (6).

5. The descent control device for measurement verification according to claim 1 is characterized in that: A connecting rod (3) for connection is clamped on the inner wall of the bracket (2), and a limiting block (4) for protection is fixedly connected to one side of the upper surface of the connecting rod (3).

6. The descent control device for measurement verification according to claim 1, characterized in that: A connection block (15) for connection is fixedly connected to the upper surface of the pressure sensing plate (10), a threaded rod (14) for connection is fixedly connected to the upper surface of the connection block (15), and the inner wall of the bracket (2) is clamped on the surface of the threaded rod (14).

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