Slow descent device for weight metrological verification

Abstract

The utility model discloses a slow descent device used in weight metrological verification, which belongs to the technical field of weight metrological verification equipment, and comprises a base, the upper end of the base is fixedly connected with a connecting seat, and a transmission assembly is arranged in the connecting seat. The side end of the connecting base is detachably connected with a connecting cover plate, the side end of the connecting cover plate is provided with a driving part, the driving part penetrates into the connecting base and is fixedly connected with the transmission assembly, and the supporting plate capable of being freely adjusted up and down is arranged below the weight metering scale, so that the weights can be lowered to the position above the weight metering scale during use, and the weight metering scale is prevented from being damaged. And under the action of the driving piece, the transmission assembly is promoted to drive the supporting plate to move upwards until the weight of the to-be-calibrated weight is completely loaded on the surface of the weight metering scale, so that the phenomenon that the to-be-calibrated weight easily impacts the weight metering scale during descending is avoided, and the weight metering scale is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of weight measurement and verification equipment, and more specifically to a slow-descent device used in weight measurement and verification. Background Art

[0002] Weights are standard measuring tools for transferring mass values. The mass value is based on the physical prototype of the platinum-iridium alloy kilogram kept in the International Bureau of Weights and Measures in France as the only reference device. All countries divide weights into national kilogram standards, national kilogram secondary standards, kilogram working standards, as well as working standard groups composed of multiples and components of the kilogram and various levels of working standard weights.

[0003] However, in actual use, the applicant found that most of the support plates for installing the weight scale are fixed in position. When personnel need to weigh the weight to be verified, they often drive the motor to gradually lower the weight of the hook to the top of the weight scale. However, due to the drive of the motor, the hook weight is prone to hit the surface of the weight scale due to excessive speed or excessive descending positions. Under long-term impact, the weight scale may be damaged prematurely. If the motor is controlled to stop in advance, the hook weight may not reach the surface of the weight scale, requiring multiple operations, thereby delaying work efficiency. For this reason, we proposed a slow descent device for weight measurement verification. Utility Model Content

[0004] 1. Technical problems to be solved:

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a slow-descent device for weight measurement and calibration, by arranging a freely adjustable up and down support plate under the weight measurement scale, so that when in use, the weight can be lowered to the top of the weight measurement scale, and then under the action of the driving member, the transmission component drives the support plate to move upward until the weight of the weight to be calibrated is completely loaded on the surface of the weight measurement scale, thereby ensuring that the weight to be calibrated is not easy to hit the weight measurement scale when it descends, thereby protecting the weight measurement scale.

[0006] 2. Technical solution:

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A slow-descent device used in weight measurement and calibration comprises a base, the upper end of the base is fixedly connected to a connecting seat, a transmission assembly is installed inside the connecting seat, a connecting cover is detachably connected to the side end of the connecting seat, a driving member is provided at the side end of the connecting cover, the driving member penetrates into the interior of the connecting seat and is fixedly connected to the transmission assembly, a support plate is movably installed inside the connecting cover, one end of the support plate is fixedly connected to the transmission assembly, a weight measurement scale is installed on the upper end of the support plate, the upper end of the connecting seat is fixedly connected to a bracket, a motor is installed on the top side end of the bracket, a traction rope is installed on the inner top end of the bracket through a winding roller, and one end of the winding roller is fixedly connected to the output end of the motor.

[0009] A further improvement is that the transmission assembly includes a trapezoidal groove opened inside the connecting seat, a slider is slidably connected between the inner walls of the trapezoidal groove, a connecting block is fixedly connected to the center end of the slider, the outer ends of the slider are rotatably connected to the wire wheel 1 at positions symmetrically distributed about the connecting block, two groups of positioning blocks and wire wheel 2 symmetrically distributed up and down are fixedly connected to the inner wall of the connecting seat, the positioning block is located on the left side of the trapezoidal groove, and the wire wheel 2 is located on the right side of the trapezoidal groove, a pull rope is wound around the wire wheel 1, the positioning block and the wire wheel 2, and the outer end of the lower wire wheel 2 is fixedly connected to a connecting pillar.

[0010] A further improvement is that a slide groove and a through hole are provided at the outer end of the connecting cover plate, wherein the through hole is located at the lower right side of the slide groove, and a plurality of evenly distributed limiting holes are provided on the outer side of the through hole, wherein the connecting block is located between the inner walls of the slide groove, and the connecting support is located between the inner walls of the through hole.

[0011] A further improvement is that the driving member includes a turntable provided on the outer side of the connecting cover plate, the front end of the turntable is fixedly connected to a connecting rod, the rear end of the turntable is fixedly connected to a connecting pillar, the outer end of the turntable is provided with a socket corresponding to the limit hole, and a positioning member is inserted into the socket.

[0012] A further improvement is that the positioning member comprises a positioning rod inserted between the inner walls of the insertion hole, the end of the positioning rod is fixedly connected to a limiting ring, and the limiting ring penetrates between the inner walls of the limiting hole.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] The utility model has a reasonable design. The weight to be tested can be hooked and hung below the traction rope, and the rotation of the winding roller is driven by the motor to promote the release of the traction rope, so that the weight to be tested is continuously moved down. Then, according to the required situation, when the descending weight to be tested is located above the weight measurement scale, the personnel can control the motor to stop the operation in advance. At this time, the weight to be tested has not hit the surface of the weight measurement scale. The personnel rotate the driving member to promote the transmission component inside the connecting seat to operate, so as to promote the support plate connected with it to move upward until the weight measurement scale holds the weight to be tested connected below the traction rope, and then the personnel limit the position of the support plate under the action of the positioning member, so that the weight measurement scale can perform the weighing work.

[0016] It effectively avoids the problem of the weight colliding with the weight scale during the placement process and the internal sensor being damaged due to excessive impact force, greatly enhancing the service life of the weight scale during calibration work.

[0017] It should be noted that the structures not introduced in the present invention are not related to the design points and improvement directions of the present invention, and are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the transmission assembly of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the utility model connecting the cover plate, the driving member and the positioning member.

[0021] Description of the numbers in the figure:

[0022] 1. Base; 2. Connecting seat; 3. Transmission assembly; 31. Trapezoidal groove; 32. Slider; 33. Connecting block; 34. Reel 1; 35. Positioning block; 36. Reel 2; 37. Pull rope; 38. Connecting pillar; 4. Connecting cover plate; 41. Slide groove; 42. Through hole; 43. Limit hole; 5. Driving member; 51. Turntable; 52. Connecting rod; 53. Socket; 6. Support plate; 7. Weight measuring scale; 8. Bracket; 9. Motor; 10. Traction rope; 11. Positioning member; 111. Positioning rod; 112. Limit ring. DETAILED DESCRIPTION

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] 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", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example:

[0028] See also Figure 1-3, a slow-descent device for weight measurement and calibration, comprising a base 1, a connecting seat 2 is fixedly connected to the upper end of the base 1, a transmission assembly 3 is installed inside the connecting seat 2, a connecting cover plate 4 is detachably connected to the side end of the connecting seat 2, a driving member 5 is provided at the side end of the connecting cover plate 4, the driving member 5 penetrates into the interior of the connecting seat 2 and is fixedly connected to the transmission assembly 3, a support plate 6 is movably installed inside the connecting cover plate 4, one end of the support plate 6 is fixedly connected to the transmission assembly 3, a weight measurement scale 7 is installed on the upper end of the support plate 6, a bracket 8 is fixedly connected to the upper end of the connecting seat 2, a motor 9 is installed on the top side end of the bracket 8, a traction rope 10 is installed on the inner top end of the bracket 8 through a winding roller, and one end of the winding roller is fixedly connected to the output end of the motor 9.

[0029] During use of the present scheme, in order to avoid the phenomenon in the prior art that the weight is easily damaged by collision when the hook is lowered to the weight weighing scale or the weight needs to be lowered again to the surface thereof, in the present embodiment, a freely adjustable support plate 6 is provided below the weight weighing scale, so that the weight can be lowered to the top of the weight weighing scale 7 during use, and then under the action of the driving member 5, the transmission assembly 3 drives the support plate 6 to move upward until the weight to be tested is completely loaded on the surface of the weight weighing scale 7, thereby ensuring that the weight to be tested is not easy to hit the weight weighing scale 7 when it is lowered, and the weight weighing scale 7 is protected;

[0030] When in use, the personnel can hook the weight to be tested to the bottom of the traction rope 10, and drive the rotation of the winding roller through the motor 9 to promote the release of the traction rope 10, so that the weight to be tested continues to move down, and then the personnel can control the motor 9 to stop the operation in advance when the descending weight to be tested is located above the weight measuring scale 7 according to the required situation. At this time, the weight to be tested has not hit the surface of the weight measuring scale 7. The personnel rotate the driving member 5 to promote the transmission component 3 inside the connecting seat 2 to operate, and promote the supporting plate 6 connected thereto to move upward until the weight measuring scale 7 carries the weight to be tested connected below the traction rope 10, and then the personnel limit the position of the supporting plate 6 under the action of the positioning member 11, so that the weight measuring scale 7 can perform the weighing work;

[0031] Compared with the prior art, this solution effectively avoids the problem of the weight colliding with the weight weighing scale 7 during placement and the internal sensor being damaged due to excessive impact force, greatly enhancing the service life of the weight weighing scale 7 during calibration work.

[0032] See also Figure 1-2The transmission assembly 3 includes a trapezoidal groove 31 opened inside the connecting seat 2, a slider 32 is slidably connected between the inner walls of the trapezoidal groove 31, a connecting block 33 is fixedly connected to the central end of the slider 32, and the outer ends of the slider 32 are rotatably connected to the wire wheel 1 34 at positions symmetrically distributed about the connecting block 33. Two groups of positioning blocks 35 and wire wheel 2 36 symmetrically distributed up and down are fixedly connected to the inner wall of the connecting seat 2, the positioning block 35 is located on the left side of the trapezoidal groove 31, and the wire wheel 2 36 is located on the right side of the trapezoidal groove 31, a pull rope 37 is wound around the wire wheel 1 34, the positioning block 35, and the wire wheel 2 36, and a connecting pillar 38 is fixedly connected to the outer end of the wire wheel 2 36 at the lower side.

[0033] During the use of this solution, when the personnel need to move the support plate 6 upward, the personnel can rotate the driving member 5 clockwise, thereby driving the connecting pillar 38 and the wire wheel 2 36 to transmit synchronously. Since the overall diameter of the pull rope 37 remains unchanged, when the wire wheel 2 36 connected to the connecting pillar 38 rotates clockwise, the upper wire wheel 2 36 is driven by tension, causing its pull rope 37 to be pulled downward as a whole, so that after the wire wheel 1 34 is pulled upward, it drives the slider 32 to move upward. Since the connecting block 33 is connected to the support plate 6, the support plate 6 is also displaced upward synchronously, so that the weight measuring scale 7 can carry out the weighing work of the weight to be calibrated and suspended. When the support plate 6 needs to be displaced downward, the driving member 5 can be rotated counterclockwise to cause the support plate 6 to move downward as a whole.

[0034] See also Figure 1-3 A slide groove 41 and a through hole 42 are provided at the outer end of the connecting cover plate 4, wherein the through hole 42 is located at the lower right side of the slide groove 41, and a plurality of evenly distributed limiting holes 43 are also provided on the outer side of the through hole 42, wherein the connecting block 33 is located between the inner walls of the slide groove 41, and the connecting pillar 38 is located between the inner walls of the through hole 42.

[0035] More specifically: the driving member 5 includes a turntable 51 provided on the outer side of the connecting cover plate 4, the front end of the turntable 51 is fixedly connected to the connecting rod 52, the rear end of the turntable 51 is fixedly connected to the connecting pillar 38, and the outer end of the turntable 51 is provided with a socket 53 corresponding to the limit hole 43, and the inside of the socket 53 is inserted with a positioning member 11.

[0036] More specifically, the positioning member 11 includes a positioning rod 111 inserted between the inner walls of the insertion hole 53 , and the end of the positioning rod 111 is fixedly connected to a limiting ring 112 , and the limiting ring 112 penetrates between the inner walls of the limiting hole 43 .

[0037] During use of the present scheme, the turntable 51 is used as a connecting piece between the connecting pillar 38, and the connecting rod 52 is used as a force-bearing rod for daily rotation by personnel. By grasping the connecting rod 52 on the outside of the connecting cover plate 4, the turntable 51 can be conveniently driven to drive the internal connecting pillar 38 and the wire wheel 36 to rotate. In order to limit the position of the support plate 6 after loading the weight to be calibrated, the personnel inserts the positioning rod 111 into the socket 53 on the surface of the turntable 51 at the predetermined position, so that the positioning rod 111 can penetrate into the limiting hole 43 on the surface of the connecting cover plate 4 at any angle. Since the transmission component 3 can no longer rotate at this time, the upper and lower positions of the support plate 6 are positioned, so as to facilitate the measurement and weighing of the weight to be calibrated. The setting of the limiting ring 112 is to avoid excessive insertion of the positioning rod 111 by personnel, and to increase the convenience of adjusting the position of the support plate 6 again when the positioning rod 111 is removed later.

[0038] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. 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 patent of the utility model shall be based on the attached claims.

Claims

1. A slow-down device for weight measurement and verification, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a connecting seat (2), a transmission assembly (3) is installed inside the connecting seat (2), a side end of the connecting seat (2) is detachably connected to a connecting cover plate (4), a side end of the connecting cover plate (4) is provided with a driving member (5), the driving member (5) penetrates into the interior of the connecting seat (2) and is fixedly connected to the transmission assembly (3), a supporting plate (6) is movably installed inside the connecting cover plate (4), one end of the supporting plate (6) is fixedly connected to the transmission assembly (3), a weight measuring scale (7) is installed on the upper end of the supporting plate (6), a bracket (8) is fixedly connected to the upper end of the connecting seat (2), a motor (9) is installed on the top side end of the bracket (8), a traction rope (10) is installed on the inner top end of the bracket (8) through a winding roller, and one end of the winding roller is fixedly connected to the output end of the motor (9); The transmission assembly (3) comprises a trapezoidal groove (31) provided inside the connecting seat (2), a slider (32) being slidably connected between the inner walls of the trapezoidal groove (31), a connecting block (33) being fixedly connected to the central end of the slider (32), the outer ends of the slider (32) being rotatably connected to wire wheel one (34) at positions symmetrically distributed about the connecting block (33), two groups of positioning blocks (35) and wire wheel two (36) being symmetrically distributed up and down are fixedly connected to the inner wall of the connecting seat (2), the positioning block (35) being located on the left side of the trapezoidal groove (31), and the wire wheel two (36) being located on the right side of the trapezoidal groove (31), a pull rope (37) being wound between the wire wheel one (34), the positioning block (35) and the wire wheel two (36), and a connecting pillar (38) being fixedly connected to the outer end of the wire wheel two (36) at the lower side.

2. The slow-descent device for weight measurement and verification according to claim 1, characterized in that: The outer end of the connecting cover plate (4) is provided with a slide groove (41) and a through hole (42), wherein the through hole (42) is located at the lower right side of the slide groove (41), and the outer side of the through hole (42) is also provided with a plurality of evenly distributed limiting holes (43), wherein the connecting block (33) is located between the inner walls of the slide groove (41), and the connecting pillar (38) is located between the inner walls of the through hole (42).

3. The slow-descent device for weight measurement verification according to claim 2, characterized in that: The driving member (5) comprises a rotating disk (51) arranged on the outer side of the connecting cover plate (4); the front end of the rotating disk (51) is fixedly connected to a connecting rod (52); the rear end of the rotating disk (51) is fixedly connected to a connecting pillar (38); the outer end of the rotating disk (51) is provided with an insertion hole (53) arranged corresponding to the limiting hole (43); and a positioning member (11) is inserted into the interior of the insertion hole (53).

4. The slow-descent device for weight measurement verification according to claim 3, characterized in that: The positioning member (11) comprises a positioning rod (111) inserted between the inner walls of the insertion hole (53), the end of the positioning rod (111) is fixedly connected to a limiting ring (112), and the limiting ring (112) penetrates between the inner walls of the limiting hole (43).

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