Slow descent device for weight metrological verification

Abstract

The utility model relates to the technical field of weight metrological verification, and discloses a slow descending device used in weight metrological verification, which comprises a base and an L-shaped rod fixedly arranged at the upper end of the base, a placing panel is fixedly arranged at the upper end of the base, an electric sliding rail is arranged on the L-shaped rod, a grabbing mechanism is arranged on the electric sliding rail, and a lifting mechanism is arranged on the L-shaped rod. Under the cooperation of a sliding panel, a placement groove, a sliding rod, a cavity, a limiting panel and a piston block, because the upper end of a connecting pipeline is a corrugated pipe, the connecting pipeline does not generate suction force along with the change of the overall position of the sliding panel and the movement of the piston block, so that the bottom of a weight can be adsorbed, and the weight is ensured not to be limited; and meanwhile, the air bag is matched with the fixing unit, the fixing unit can extrude the air bag, the air bag can make contact with the weight, the weight can be further limited, it is guaranteed that in the weight transportation process, limiting is not generated, collision is avoided, and the precision of the weight is prevented from being affected.

Description

Technical Field

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

[0002] In modern times, weights are the standard measuring tools for mass value transmission. The mass value is the only physical object preserved in France. All countries divide weights into national kilogram standards, national kilograms, kilogram working standards, and working standards composed of multiples and weights of kilograms and various weights. At present, slow-down devices are often used to place and move larger weights.

[0003] According to a slow-descent device used in weight measurement and verification with Chinese patent publication number CN219736558U, it includes a base, a limit device is fixedly connected to the left upper end of the base, universal wheels with brakes are fixedly connected to the four corners of the lower end of the base, a push handle is fixedly connected to the right upper end of the base, a support frame is fixedly connected to the right upper end of the base, the support frame is located on the left of the push handle, a position adjustment device is inserted and fixedly connected to the upper right end of the support frame, and a slow-descent mechanism is arranged at the lower end of the position adjustment device. The slow-descent device used in weight measurement and verification described in the utility model is convenient for adjusting the position of the weight through the arranged position adjustment device.

[0004] Although the above patent can conveniently adjust the position of the weights, when placing the weights, the weights are only placed in a placement box, and the position of the weights is restricted by rubber pads and grooves. However, it is difficult to limit the position of the weights well in this way. During transportation, the weights may be ejected from the grooves due to uneven road conditions, or may shake around and cause the weights to bump into each other, resulting in inaccurate weight accuracy. Therefore, it does not meet existing needs. We have proposed a slow-descent device for weight measurement and calibration. Utility Model Content

[0005] The utility model provides a slow-descent device for weight measurement and verification, which has the beneficial effect of being able to well limit the weight and preventing it from shaking around, and solves the problem mentioned in the above background technology that the weight is only placed in a placement box and the position of the weight is limited by a rubber pad and a groove, but this method is difficult to well limit the position of the weight. During transportation, due to uneven road surface, the weight may be ejected from the groove, or the weight may shake around and collide, resulting in inaccurate weight accuracy.

[0006] The utility model provides the following technical solutions: a slow-descent device used in weight measurement and calibration, comprising a base and an L-shaped rod fixedly installed on the upper end of the base, a placement panel fixedly installed on the upper end of the base, an electric slide rail is arranged on the L-shaped rod, a grabbing mechanism is arranged on the electric slide rail, a plurality of placement grooves are opened on the placement panel, a limiting component for limiting the weight is arranged on the placement groove, an annular groove is arranged on the side wall of the placement groove, an airbag is arranged on the annular groove, a connecting chamber is arranged on the placement panel, and a fixing unit that can drive the airbag to expand and further limit the weight is arranged on the connecting chamber.

[0007] As an optional solution of the slow descent device used in weight measurement and calibration described in the utility model, wherein: the limiting assembly includes a sliding panel slidably arranged on the placement groove and a connecting hole opened on the sliding panel, the lower end of the connecting hole is connected to a connecting pipe, the connecting pipe is fixedly arranged on the placement groove, and the lower end is interspersed with the connecting chamber, and a piston block is slidably arranged on the connecting pipe.

[0008] As an optional scheme of the slow descent device used in weight measurement and calibration described in the utility model, wherein: a slide rod is fixedly installed on the lower end of the sliding panel, a limit panel is fixedly installed on the lower end of the slide rod, the lower end of the piston block is fixedly installed on the limit panel, and the upper end of the connecting pipe is a bellows setting.

[0009] As an optional solution of the slow-descent device used in weight measurement and verification described in the utility model, a spring is fixedly connected between the limit panel and the bottom wall of the connection chamber.

[0010] As an optional solution of the slow descent device used in weight measurement and calibration described in the utility model, the fixing unit includes a supporting panel fixedly installed on the upper end of the limiting panel and a positioning rod fixedly installed on the side wall of the supporting panel, a connecting ring is fixedly installed on the side wall of the positioning rod, the connecting ring is in contact with the airbag, and the positioning rod is slidably set on the placement groove.

[0011] As an optional solution of the slow-descent device used in weight measurement and verification described in the utility model, wherein: the airbag is fixedly arranged on the annular groove.

[0012] The utility model has the following beneficial effects:

[0013] 1. With the cooperation of the sliding panel, placement groove, sliding rod, connecting chamber, limit panel and piston block, since the upper end of the connecting pipe is a bellows, the connecting pipe will not change with the overall position of the sliding panel. The movement of the piston block will generate suction on the connecting pipe, which can adsorb the bottom of the weight to ensure that it will not be limited. At the same time, in cooperation with the fixing unit, the fixing unit can squeeze the airbag, so that the airbag can contact the weight, and the weight can be further limited to ensure that the weight will not be limited during transportation, avoid bumps and affect the accuracy of the weight.

[0014] 2. When the limit panel moves downward, it will drive the corresponding support panel to move downward. The support panel will drive the connecting ring to move downward through the positioning rod. The connecting ring will squeeze the airbag. Because the airbag and the bottom wall of the annular groove are fixed, when the airbag is squeezed, it expands outward. The expanded airbag can contact and limit the weight, and can further limit the weight to ensure that it does not shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the limit assembly of the utility model.

[0017] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 For the utility model Figure 2 Enlarged view of point B in the middle.

[0019] In the figure: 1. base; 2. L-shaped rod; 3. placement panel; 4. placement groove; 5. grabbing mechanism; 6. electric slide rail; 7. connecting chamber; 8. airbag; 9. limit assembly; 91. sliding panel; 92. connecting hole; 93. connecting pipe; 94. piston block; 95. limit panel; 96. spring; 97. slide rod; 10. fixing unit; 101. support panel; 102. positioning rod; 103. connecting ring; 104. annular groove. DETAILED DESCRIPTION

[0020] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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. Example

[0021] See also Figure 1-4 A slow-descent device for weight measurement and calibration comprises a base 1 and an L-shaped rod 2 fixedly mounted on the upper end of the base 1, a placement panel 3 is fixedly mounted on the upper end of the base 1, an electric slide rail 6 is arranged on the L-shaped rod 2, a grabbing mechanism 5 is arranged on the electric slide rail 6 as prior art, and is not described in detail here. A plurality of placement slots 4 are provided on the placement panel 3, a limiting assembly 9 for limiting the weight is arranged on the placement slot 4, an annular groove 104 is arranged on the side wall of the placement slot 4, an airbag 8 is arranged on the annular groove 104, the weight can be well limited by the setting of the airbag 8, and at the same time, it will not be worn, and the accuracy of the weight can be further guaranteed. A connecting chamber 7 is arranged on the placement panel 3, and a fixing unit 10 is arranged on the connecting chamber 7, which can drive the airbag 8 to expand and further limit the weight.

[0022] The limiting assembly 9 includes a sliding panel 91 slidably arranged on the placement groove 4 and a connecting hole 92 opened on the sliding panel 91. The lower end of the connecting hole 92 is connected to a connecting pipe 93. The connecting pipe 93 is fixedly arranged on the placement groove 4, and the lower end is inserted into the connecting chamber 7. A piston block 94 is slidably arranged on the connecting pipe 93. Through the setting of the piston block 94, negative pressure can be generated in the inner cavity of the connecting pipe 93, so that the bottom of the weight can be adsorbed.

[0023] A slide rod 97 is fixedly installed at the lower end of the sliding panel 91, and a limit panel 95 is fixedly installed at the lower end of the slide rod 97. The lower end of the piston block 94 is fixedly installed on the limit panel 95. The upper end of the connecting pipe 93 is provided with a bellows. Through the setting of the bellows, the downward pressure of the sliding panel 91 will not cause the overall position of the connecting pipe 93 to move downward.

[0024] A spring 96 is fixedly connected between the limiting panel 95 and the bottom wall of the connecting chamber 7. Through the setting of the spring 96, the elastic force of the spring 96 can allow the limiting panel 95 to return to the initial position when it is not squeezed.

[0025] In this embodiment: first, the weight is placed in the corresponding placement groove 4 through the cooperation of the electric slide rail 6 and the grabbing mechanism 5. When the weight enters the placement groove 4, it will squeeze the sliding panel 91 by its own weight, and the sliding panel 91 will slide downward along the placement groove 4. The sliding panel 91 will drive the sliding rod 97 to slide along the connecting chamber 7. The sliding rod 97 drives the limiting panel 95 and the piston block 94 to move downward. Since the upper end of the connecting pipe 93 is a bellows, the sliding panel 91 can be compressed by moving downward, but the connecting pipe 93 will not move with the sliding panel 91 as a whole. The position changes, and the piston block 94 will slide downward along the inner cavity on the connecting pipe 93. When the weight contacts the sliding panel 91, its lower end will be blocked with the connecting hole 92. As the piston block 94 moves, the connecting pipe 93 will generate suction, which can adsorb the bottom of the weight to ensure that it will not be limited. At the same time, in conjunction with the fixing unit 10, the fixing unit 10 can squeeze the airbag 8, allowing the airbag 8 to contact the weight, and can further limit the weight to ensure that the weight will not be limited during transportation, avoid bumps, and affect the accuracy of the weight. Example

[0026] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 and Figure 4 The fixing unit 10 includes a supporting panel 101 fixedly mounted on the upper end of the limiting panel 95 and a positioning rod 102 fixedly mounted on the side wall of the supporting panel 101. A connecting ring 103 is fixedly mounted on the side wall of the positioning rod 102. The connecting ring 103 contacts the airbag 8. The positioning rod 102 is slidably set on the placement groove 4.

[0027] The airbag 8 is fixedly arranged on the annular groove 104 .

[0028] In this embodiment, when the limiting panel 95 moves downward, it will drive the corresponding supporting panel 101 to move downward. The supporting panel 101 will drive the connecting ring 103 to move downward through the positioning rod 102. The connecting ring 103 will squeeze the airbag 8. Because the airbag 8 and the bottom wall of the annular groove 104 are fixed, when the airbag 8 is squeezed, it expands outward. The expanded airbag 8 can contact and limit the weight, and can further limit the weight to ensure that it does not shake.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A slow-descent device for weight measurement and verification, comprising a base (1) and an L-shaped rod (2) fixedly mounted on the upper end of the base (1), a placement panel (3) fixedly mounted on the upper end of the base (1), an electric slide rail (6) disposed on the L-shaped rod (2), and a grabbing mechanism (5) disposed on the electric slide rail (6), characterized in that: The placement panel (3) is provided with a plurality of placement grooves (4), the placement grooves (4) are provided with position limiting components (9) capable of limiting the position of weights, the side walls of the placement grooves (4) are connected with an annular groove (104), an air bag (8) is provided on the annular groove (104), the placement panel (3) is provided with a connecting chamber (7), and the connecting chamber (7) is provided with a fixing unit (10) capable of driving the air bag (8) to expand and further limit the position of the weights.

2. The slow-descent device for weight measurement and verification according to claim 1, characterized in that: The position limiting assembly (9) comprises a sliding panel (91) slidably arranged on the placement groove (4) and a connecting hole (92) provided on the sliding panel (91); a connecting pipe (93) is provided at the lower end of the connecting hole (92); the connecting pipe (93) is fixedly arranged on the placement groove (4) and its lower end is inserted into the connecting chamber (7); a piston block (94) is slidably arranged on the connecting pipe (93).

3. The slow-descent device for weight measurement verification according to claim 2, characterized in that: A slide rod (97) is fixedly mounted on the lower end of the sliding panel (91), a limit panel (95) is fixedly mounted on the lower end of the slide rod (97), the lower end of the piston block (94) is fixedly mounted on the limit panel (95), and the upper end of the connecting pipe (93) is provided as a bellows.

4. The slow-descent device for weight measurement verification according to claim 3, characterized in that: A spring (96) is fixedly connected between the limiting panel (95) and the bottom wall of the connecting chamber (7).

5. The slow-descent device for weight measurement verification according to claim 4, characterized in that: The fixing unit (10) comprises a support panel (101) fixedly mounted on the upper end of the limiting panel (95) and a positioning rod (102) fixedly mounted on the side wall of the support panel (101); a connecting ring (103) is fixedly mounted on the side wall of the positioning rod (102); the connecting ring (103) is in contact with the airbag (8); and the positioning rod (102) is slidably mounted on the placement groove (4).

6. The slow-descent device for weight measurement verification according to claim 5, characterized in that: The airbag (8) is fixedly arranged on the annular groove (104).

Images