CN219064664U

CN219064664U - Slowly-descending device for weight metering verification

Info

Publication number: CN219064664U
Application number: CN202222291090.7U
Authority: CN
Inventors: 吴静
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-05-23
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to a descent control device for weight metering verification, which comprises a cross beam, wherein one side of the cross beam is fixedly connected with an outer shell, a cavity is formed in the cross beam, a rotating shaft is rotatably connected in the cavity, a winding wheel and a rotating disc are fixedly connected on the rotating shaft, a lifting rope is wound on the winding wheel, a groove body is uniformly formed in the circumferential direction of the rotating disc, an inner ring steel column is arranged in the groove body, and an outer ring steel column is arranged between the rotating disc and the outer shell; according to the utility model, through the arrangement of the outer shell, the turntable, the groove body, the inner ring steel column and the outer ring steel column, when the phenomenon of unsmooth winding of the lifting rope on the winding wheel occurs, the slow dropping of the weight is realized by utilizing the steel column collision escapement principle in the process of slow dropping of the weight, the phenomenon of sudden dropping in the process of slow dropping of the weight is avoided, and further, the severe impact between the weight and the quality comparator is avoided, so that the quality comparator is protected.

Description

Slowly-descending device for weight metering verification

Technical Field

The utility model relates to the technical field of metering verification, in particular to a descent control device for weight metering verification.

Background

The weight verification is to evaluate the performance of the weight, such as accuracy, stability, sensitivity, etc., to determine whether all the works are performed according with legal requirements, any weight has use value only on the basis of accurate consistency, when the test is performed, an inaccurate metering device (or a detecting instrument) is used, the test result does not ensure the correctness of the test conclusion, and no talk is made, after any metering weight is used for a certain period of time, the metering weight is out of alignment and fails due to the change of objective conditions such as operation abrasion, aging and use environment, temperature, humidity, etc., so that the accuracy and the reliability of the measurement value are not guaranteed for a long time, and the country prescribes strict use period and forced verification for different metering devices, and corrects the errors of the use metering device through the period verification, thereby ensuring the accuracy of the measurement value.

Through retrieval, the patent publication number CN 213569247U's utility model patent belongs to the technical field of metrological verification, and it discloses a slowly descending device for in the weight metrological verification, including the support column, support column lower extreme fixedly connected with base, the motor has been set firmly to base top front side, the base leads to the inslot upper portion and is equipped with two racks, the meshing is connected with gear B between two racks, lead to inslot lower part and be equipped with the connecting rod, the connecting rod front portion is controlled the end and is all articulated with the dwang about the rear portion, dwang outer end bottom rotation is connected with the gyro wheel. According to the utility model, the motor drives the chain to rotate, the abutting block at the lower part of the chain is in abutting cancellation with the rack at the front side, when the rack is not in abutting connection with the abutting block, the dead weight of the device rotates the roller with the middle part of the rotating rod as the center of a circle, so that the roller is folded into the groove, the bottom surface of the base is in contact with the ground, the device is kept stable when the device continuously slowly descends, and the weight with large mass is ensured to keep stable running when slowly descends.

According to the technical scheme, the hanging rope is used for connecting the hanging hooks, the hanging rope is slowly released to achieve the purpose of slowly lowering the weight, however, the hanging rope is not tightly wound in the process of being wound on the reel by the motor, a loosening phenomenon is generated, the phenomenon of sudden drop occurs in the next slowly lowering process of the weight, severe impact occurs between the weight and the quality comparator, the impact force can cause damage to a sensor part in the quality comparator, and the quality comparator is scrapped when the impact force is severe.

Disclosure of Invention

The embodiment of the utility model provides a descent control device for weight metering verification, which can solve the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a slowly fall device for in weight metrological verification, includes the crossbeam, one side fixedly connected with shell body of crossbeam, the cavity has been seted up to the inside of crossbeam, the inside of cavity rotates and is connected with the pivot, fixedly connected with winding wheel and carousel in the pivot, the winding has the lifting rope on the winding wheel, the cell body has evenly been seted up in the circumference of carousel, the inside of cell body is provided with inner ring steel column, be provided with outer loop steel column between carousel and the shell body.

Preferably, a fixed pulley is arranged between the inner side walls of the cavities, and the free end of the lifting rope bypasses the fixed pulley to be fixedly connected with a hook.

Preferably, the outer wall of the hook is sleeved with a protective sleeve, and the protective sleeve is made of silica gel materials.

Preferably, one side of the cross beam is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with the rotating shaft.

Preferably, one end of the cross beam, which is close to the outer shell, is fixedly connected with a supporting rod.

Preferably, the lower end of the supporting rod is rotatably connected with a counterweight seat.

Preferably, the counterweight seat is provided with a second motor.

Preferably, the support rod is fixedly connected with a driven bevel gear, the output end of the second motor is fixedly connected with a driving bevel gear, and the driving bevel gear is in transmission connection with the driven bevel gear.

Compared with the prior art, the utility model realizes slow descent by utilizing the steel column collision escapement principle in the weight slow descent process through the arrangement of the outer shell, the turntable, the groove body, the inner ring steel column and the outer ring steel column when the phenomenon of unsmooth winding of the lifting rope on the winding wheel occurs, thereby avoiding the sudden descent phenomenon in the weight slow descent process, further avoiding the severe impact between the weight and the mass comparator and protecting the mass comparator.

Drawings

FIG. 1 is a schematic view of the internal structure of an outer casing according to the present utility model;

FIG. 2 is a schematic diagram of the front structure of the present utility model;

fig. 3 is a schematic top view of the interior of the beam of the present utility model.

In the figure: 1. a counterweight seat; 2. a support rod; 3. a cross beam; 4. a cavity; 5. a rotating shaft; 6. a tank body; 7. a winding wheel; 8. a turntable; 9. an outer housing; 10. an inner ring steel column; 11. an outer ring steel column; 12. a fixed pulley; 13. a hanging rope; 14. a hook; 15. a first motor; 16. a second motor; 17. a driven bevel gear; 18. and a drive bevel gear.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the technical solutions of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

As shown in fig. 1-3, a slowly descending device for weight metering verification comprises a cross beam 3, one side of the cross beam 3 is fixedly connected with an outer shell 9, a cavity 4 is formed in the cross beam 3, a rotating shaft 5 is rotatably connected to the cavity 4, a winding wheel 7 and a rotating disc 8 are fixedly connected to the rotating shaft 5, a lifting rope 13 is wound on the winding wheel 7, a groove body 6 is uniformly formed in the circumferential direction of the rotating disc 8, an inner ring steel column 10 is arranged in the groove body 6, and an outer ring steel column 11 is arranged between the rotating disc 8 and the outer shell 9.

When the weight is specifically used, after the weight is hooked by the hook 14, the first motor 15 is started to enable a part of the lifting rope 13 to be wound on the winding wheel 7, the weight is driven to lift by a set height and then stopped, the second motor 16 is started, the second motor 16 drives the driving bevel gear 18 to rotate, the driving bevel gear 18 drives the driven bevel gear 17 to rotate so as to reduce the rotating speed, the supporting rod 2 drives the hook 14 to slowly rotate to the position right above the mass comparator, the first motor 15 is started to enable the lifting rope 13 on the winding wheel 7 to be released, when the lifting rope 13 which is not tightly wound is released, the weight can generate a sudden drop trend, at the moment, the inner ring steel column 10 is thrown out under the centrifugal effect and is caught by the outer ring steel column 11, damping is generated by collision, the inner ring steel column 10 is pushed back into the groove body 6 of the turntable 8 by collision, the speed is constant, the rotation is continued, the catching and the longitudinal circulation is reciprocally realized, and slow drop is realized.

In order to achieve the purpose of avoiding collision between the weight and the support rod 2, preferably, a fixed pulley 12 is arranged between the inner side walls of the cavity 4, the free end of the lifting rope 13 bypasses the fixed pulley 12 and is fixedly connected with a hook 14, the distance between the hook 14 and the support rod 2 is prolonged through the fixed pulley 12, the weight and the support rod 2 are prevented from interfering, and metering detection can be smoothly carried out.

In order to achieve the purpose of avoiding the hook 14 from damaging the weight, preferably, a protective sleeve is sleeved on the outer wall of the hook 14, the protective sleeve is made of a silica gel material, the hook 14 is prevented from being in direct contact with the weight, the weight is protected, and the metering accuracy of the weight is guaranteed.

In order to achieve the purpose of achieving lifting of the electric control weight, preferably, one side of the cross beam 3 is fixedly connected with a first motor 15, the output end of the first motor 15 is fixedly connected with a rotating shaft 5, the rotating shaft 5 drives a winding wheel 7 and a rotating disc 8 to synchronously rotate in the forward and reverse rotation process of the first motor 15, the winding wheel 7 winds or releases a lifting rope 13, and lifting and descending of the weight are respectively achieved.

In order to achieve the purpose of supporting the cross beam 3 at a high degree, it is preferable that one end of the cross beam 3 near the outer casing 9 is fixedly connected with a supporting rod 2.

In order to achieve the purpose of conveniently rotating the supporting rod 2, preferably, the lower end of the supporting rod 2 is rotationally connected with the counterweight seat 1, and the supporting rod 2 can rotate relative to the counterweight seat 1, so that the cross beam 3 becomes more flexible, and weights at different positions can be conveniently taken and placed by the hooks 14.

For the purpose of electrically controlling the support rod 2 to rotate, it is preferable that the counterweight base 1 is provided with a second motor 16.

In order to achieve the purpose that the second motor 16 drives the support rod 2 to slowly rotate, preferably, the support rod 2 is fixedly connected with a driven bevel gear 17, the output end of the second motor 16 is fixedly connected with a driving bevel gear 18, the driving bevel gear 18 is in transmission connection with the driven bevel gear 17, in the working process of the second motor 16, the second motor 16 drives the driving bevel gear 18 to rotate, the driving bevel gear 18 drives the driven bevel gear 17 to slowly rotate, the purpose that the driven bevel gear 17 drives the support rod 2 to slowly rotate is achieved, and the releasing position precision of weights is improved.

Compared with the prior art, the utility model has the advantages that through the arrangement of the outer shell 9, the rotary table 8, the groove body 6, the inner ring steel column 10 and the outer ring steel column 11, when the phenomenon of unsmooth winding of the lifting rope 13 on the winding wheel 7 occurs, the slow dropping is realized by utilizing the steel column collision escapement principle in the weight slow dropping process, the sudden drop phenomenon in the weight slow dropping process is avoided, and further, the severe impact between the weight and the quality comparator is avoided, so that the quality comparator is protected.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A slowly fall device for in weight metrological verification, its characterized in that: including crossbeam (3), one side fixedly connected with shell body (9) of crossbeam (3), cavity (4) have been seted up to the inside of crossbeam (3), the inside rotation of cavity (4) is connected with pivot (5), fixedly connected with winding wheel (7) and carousel (8) on pivot (5), the winding has lifting rope (13) on winding wheel (7), cell body (6) have evenly been seted up on the circumference of carousel (8), the inside of cell body (6) is provided with inner ring steel column (10), be provided with outer loop steel column (11) between carousel (8) and shell body (9).

2. A descent control device for use in weight metrology assays according to claim 1, wherein: a fixed pulley (12) is arranged between the inner side walls of the cavities (4), and the free end of the lifting rope (13) bypasses the fixed pulley (12) and is fixedly connected with a hook (14).

3. A descent control device for use in weight metrology assays according to claim 2, wherein: the outer wall of the hook (14) is sleeved with a protective sleeve, and the protective sleeve is made of silica gel materials.

4. A descent control device for use in weight metrology assays according to claim 1, wherein: one side of the cross beam (3) is fixedly connected with a first motor (15), and the output end of the first motor (15) is fixedly connected with the rotating shaft (5).

5. A descent control device for use in weight metrology assays according to claim 1, wherein: one end of the cross beam (3) close to the outer shell (9) is fixedly connected with a supporting rod (2).

6. The descent control device for weight metering verification according to claim 5, wherein: the lower end of the supporting rod (2) is rotatably connected with a counterweight seat (1).

7. The descent control device for weight metering verification according to claim 6, wherein: the counterweight seat (1) is provided with a second motor (16).

8. The descent control device for weight metering verification according to claim 7, wherein: the support rod (2) is fixedly connected with a driven bevel gear (17), the output end of the second motor (16) is fixedly connected with a drive bevel gear (18), and the drive bevel gear (18) is in transmission connection with the driven bevel gear (17).