Weighing apparatus weighing calibration device with automatic limiting function

Abstract

The invention belongs to the technical field of weighing apparatus weighing calibration, and provides a weighing apparatus weighing calibration device with an automatic limiting function, which comprises a vehicle body, the vehicle body comprises a base, a handrail is arranged at the top of the base, at least two wheels are symmetrically arranged on the side edge of the base, and a first accommodating groove and a second accommodating groove are respectively formed in the base. A calibration assembly is arranged on the base; according to the invention, the weighing apparatus is fixedly connected to the center of the first accommodating groove, under the cooperation of the first motor and the screw rod, the clamping member drives the weight to adjust the height position, and the two arc-shaped clamping blocks perform opening motion in the two second sliding grooves, so that the weight is placed at the center of a weighing sensor of the weighing apparatus; the force applied to the weighing sensor of the weighing apparatus is distributed most uniformly, so that the weighing error caused by unbalance loading can be avoided, the accuracy of the weighing result is ensured, and the clamping component is arranged, so that the weight can be quickly and accurately placed, the error and time of manual operation are reduced, and the calibration efficiency can be remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of weighing calibration of weighing instruments, and specifically relates to a weighing calibration device for weighing instruments with an automatic limiting function. Background Art

[0002] As an important tool for measuring the weight of objects, weighing instruments are widely used in various fields. In order to ensure the measurement accuracy of weighing instruments, they need to be calibrated regularly. Traditional weighing instrument calibration widely uses standard weights for calibration. By comparing the known weight of the weights with the measurement results of the weighing instrument, the weighing instrument is adjusted to ensure its accuracy.

[0003] For the traditional weighing calibration of weighing instruments, the operator needs to manually place the weights on the weighing sensor of the weighing instrument and start the calibration program. By comparing with the weight of the standard weights, the weighing accuracy of the weighing instrument is calibrated. However, when the operator places the weights at the center position of the weighing sensor platform, there may be human errors, resulting in uneven force distribution on the weighing sensor of the weighing instrument. Weighing errors may occur due to off-center loading (the weights deviate from the center). Off-center loading will cause uneven force on the sensor, thus affecting the accuracy of the weighing result. Moreover, the operation of manually placing the weights takes a long time, and multiple adjustments may be required to place the weights at the center of the weighing sensor of the weighing instrument.

[0004] Therefore, those skilled in the art have proposed a weighing calibration device for weighing instruments with an automatic limiting function to solve the problems raised in the background art.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of the present invention. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a weighing calibration device for weighing instruments with an automatic limiting function to solve the problem that there may be human errors when the operator places the weights at the center position of the weighing sensor platform in the prior art.

[0007] To achieve the above object, the present invention provides a weighing calibration device for weighing instruments with an automatic limiting function, including a vehicle body. The vehicle body includes a base. An armrest is provided on the top of the base. At least two wheels are symmetrically provided on the side of the base. A first accommodation groove and a second accommodation groove are respectively formed on the base. A calibration component is provided on the base;

[0008] The calibration assembly includes a bearing plate disposed in the first receiving groove. A first sliding groove is formed in the bearing plate, and a slider is slidably connected in the first sliding groove. A driving member is disposed at the bottom of the bearing plate. A support column is disposed in the second receiving groove. The support column includes a lower support column disposed in the second receiving groove. An upper support column is slidably connected in the lower support column. A first motor is disposed in the lower support column. A lead screw is fixedly connected to the output end of the first motor. A connecting plate is rotatably connected to the top of the upper support column. A clamping member is disposed at the end of the connecting plate. A weighing scale is disposed on the top of the bearing plate. A weight is disposed on the clamping member.

[0009] Preferably, a plurality of the first sliding grooves and sliders are provided and are evenly distributed in a circumferential manner. Elastic blocks are disposed at the ends of the plurality of sliders, and the plurality of elastic blocks are respectively attached to the four sides of the weighing scale. The upper support column is threadedly connected to the lead screw.

[0010] Preferably, the driving member includes a rotating plate rotatably connected to the bottom of the bearing plate. An L-shaped connecting rod is rotatably connected to the rotating plate. An air pump is disposed between the two sliders.

[0011] Preferably, the clamping member includes a second motor fixedly connected to the bottom of the connecting plate. A circular plate is fixedly connected to the output end of the second motor. An arc-shaped groove is formed in the circular plate. A fixing plate is fixedly connected to the bottom of the connecting plate. A second sliding groove is formed in the fixing plate, and an arc-shaped clamping block is slidably connected in the second sliding groove.

[0012] Preferably, the end of the L-shaped connecting rod is rotatably connected to the bottom of the slider. A plurality of L-shaped connecting rods are provided and are evenly distributed in a circumferential manner. The bottom and the output end of the air pump are respectively fixedly connected to the bottoms of two symmetric sliders. The circular plate is rotatably connected to the fixing plate. The end of the arc-shaped clamping block is inserted into the arc-shaped groove. Two arc-shaped grooves, second sliding grooves and arc-shaped clamping blocks are provided and are symmetrically arranged. The weight is disposed between the two arc-shaped clamping blocks.

[0013] Preferably, a disassembly and assembly component is disposed in the second receiving groove. The disassembly and assembly component includes a spring fixedly connected to the bottom of the second receiving groove. An I-shaped plate is fixedly connected to the end of the spring. A clamping rod is rotatably connected to the I-shaped plate. A clamping block is fixedly connected to the end of the clamping rod. A connecting seat is fixedly connected to the inner side wall of the second receiving groove. A clamping groove is formed on the outer side of the lower support column.

[0014] Preferably, the lower support column is disposed on the top of the I-shaped plate. The clamping block is clamped in the clamping groove. The clamping rod is rotatably connected to the connecting seat. Two clamping rods, clamping blocks, connecting seats and clamping grooves are provided and are symmetrically arranged.

[0015] Preferably, in a weighing and calibration device of a weighing instrument with an automatic limit function described in claim 1, it is characterized in that: a stabilizing component is arranged at the bottom of the base, and the stabilizing component includes a threaded rod rotatably connected to the bottom of the base, a first bevel gear is fixedly connected to the threaded rod, a third motor is fixedly connected to the bottom of the base, and a second bevel gear is fixedly connected to the output end of the third motor.

[0016] Preferably, the stabilizing component further includes a grounding plate, a plurality of sleeves are fixedly connected to the bottom of the grounding plate, and a plurality of sliding rods are fixedly connected to the bottom of the base.

[0017] Preferably, the first bevel gear meshes with the second bevel gear, the threaded rod is threadedly connected to the sleeve at the center of the grounding plate, and the plurality of sliding rods are slidably connected to the plurality of sleeves at the ends of the grounding plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, an air pump drives two sliders to perform opening or closing movements. Driven by an L-shaped connecting rod, a rotating plate rotates, so that a plurality of L-shaped connecting rods drive a plurality of sliders to perform centering movements, clamp the weighing instrument, fixedly connect the weighing instrument to the center of the first receiving groove, and under the cooperation of a first motor and a lead screw, drive a weight to adjust the height position through a clamping member. When the second motor is started, due to the extrusion force of two arc-shaped grooves on a circular plate, two arc-shaped clamping blocks perform opening movements in two second sliding grooves, so as to place the weight at the center of the weighing sensor of the weighing instrument. The force received by the weighing sensor of the weighing instrument is most evenly distributed, which can avoid weighing errors caused by eccentric loading, ensure the accuracy of the weighing result, and through the setting of the clamping member, the weight can be placed quickly and accurately, reducing the error and time of manual operation, and significantly improving the calibration efficiency.

[0020] 2. In the present invention, by setting a disassembly and assembly component, when the support column is placed on the I-shaped plate, the spring is tightened, the I-shaped plate is pressed down, driving two clamping rods to perform clamping movements, so that the clamping block is clamped in the clamping groove. The support column can be quickly installed and disassembled, greatly reducing the installation and disassembly time, improving the use efficiency of the calibration device, and the design of the disassembly and assembly component enables the calibration device to quickly adapt to different calibration scenarios. And because the support column can be quickly disassembled, the maintenance and replacement of the support column become simpler, reducing the maintenance time and cost, and improving the reliability and economy of the calibration device.

[0021] 3. Through the cooperation of the first bevel gear and the second bevel gear, the present invention rotates the threaded rod, thereby adjusting the up and down position of the grounding plate. When the grounding plate slowly moves down, the overall device is lifted, and the wheels do not contact the ground, making the device more stable during use, preventing the device from shifting, and reducing the influence of external factors on the calibration accuracy.

[0022] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0024] Figure 2 It is a cross-sectional view of a driving member of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0025] Figure 3 It is a bottom view of a driving member of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0026] Figure 4 It is a cross-sectional view of a clamping member of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of a clamping member of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of a disassembly and assembly component of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of a stabilizing component of a weighing calibration device of a weighing instrument with an automatic limiting function in an embodiment of the present invention.

[0030] In the figure:

[0031] 1. Vehicle body; 11. Base; 111. First receiving groove; 112. Second receiving groove; 12. Handrail; 13. Wheel; 2. Calibration assembly; 21. Bearing plate; 22. First chute; 23. Slide block; 24. Driving member; 241. Rotating plate; 242. L-shaped connecting rod; 243. Air pump; 25. Support column; 251. Lower support column; 252. Upper support column; 26. First motor; 27. Lead screw; 28. Connecting plate; 29. Clamping member; 291. Second motor; 292. Circular plate; 293. Arc-shaped groove; 294. Fixed plate; 295. Second chute; 296. Arc-shaped clamping block; 3. Weighing scale; 4. Weight; 5. Disassembly and assembly component; 51. Spring; 52. I-shaped plate; 53. Clamping rod; 54. Block; 55. Connecting seat; 56. Card slot; 6. Stabilizing component; 61. Threaded rod; 62. First bevel gear; 63. Third motor; 64. Second bevel gear; 65. Grounding plate; 66. Sleeve; 67. Slide bar. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. It should be noted that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figure, the relative sizes and proportions of the parts shown in the figure are exaggerated or reduced in size and illustrated. Any size is only exemplary and not limiting.

[0033] Embodiment 1:

[0034] Please refer to Figure 1 - Figure 7 As shown in the figure, a weighing and calibration device for a weighing scale with an automatic limiting function includes a vehicle body 1. The vehicle body 1 includes a base 11. A handrail 12 is provided on the top of the base 11. At least two wheels 13 are symmetrically arranged on the sides of the base 11. A first receiving groove 111 and a second receiving groove 112 are respectively opened on the base 11. A calibration assembly 2 is provided on the base 11. The base 11 serves as a support platform for the entire device, providing a stable foundation. The handrail 12 facilitates the operator to move the calibration device. The arrangement of the wheels 13 facilitates the operator to move the calibration device, which is convenient for the movement of the device and improves the flexibility of the calibration work. The first receiving groove 111 and the second receiving groove 112 are respectively used to install the weighing scale 3 and the support column 25;

[0035] The calibration component 2 includes a receiving plate 21 disposed in the first receiving groove 111. A first sliding groove 22 is formed in the receiving plate 21. A slider 23 is slidably connected in the first sliding groove 22. A driving member 24 is disposed at the bottom of the receiving plate 21. A support column 25 is disposed in the second receiving groove 112. The support column 25 includes a lower support column 251 disposed in the second receiving groove 112. An upper support column 252 is slidably connected in the lower support column 251. A first motor 26 is disposed in the lower support column 251. A lead screw 27 is fixedly connected to the output end of the first motor 26. The top of the upper support column 252 is rotatably connected to a connecting plate 28. A clamping member 29 is disposed at the end of the connecting plate 28. A weighing scale 3 is disposed on the top of the receiving plate 21. A weight 4 is disposed on the clamping member 29. The receiving plate 21 is used to carry the weighing scale 3. The first sliding groove 22 is used for the sliding of the slider 23 to realize the positioning and adjustment of the weighing scale 3. The slider 23 slides in the first sliding groove 22 and fits with the four sides of the weighing scale 3 through elastic blocks to realize the fixing and limiting of the weighing scale 3. The driving member 24 drives the slider 23 to move through the telescopic action of an air pump 243 to realize the automatic limiting of the weighing scale 3. The support column 25 includes the lower support column 251 and the upper support column 252, which are used to support the connecting plate 28, the clamping member 29 and the weight 4. The first motor 26 drives the lifting of the upper support column 252 through the lead screw 27 to realize the height adjustment of the clamping member 29 and the weight 4. The connecting plate 28 is used to connect the upper support column 252 and the clamping member 29, and is also used to transmit power and support the weight 4. The clamping member 29 is used to clamp the weight 4 to ensure its stable placement. The weighing scale 3 is the object to be calibrated and is placed on the receiving plate 21. Through the limiting of the slider 23 and the elastic blocks, its stability during the weighing process is ensured. The weight 4 is the standard weight for calibrating the weighing scale 3 and is fixed on the support column 25 through the clamping member 29 for calibrating the weighing accuracy of the weighing scale 3.

[0036] Specifically, a plurality of the first sliding grooves 22 and the sliders 23 are provided and are evenly distributed in a circular pattern. Elastic blocks are disposed at the ends of the plurality of sliders 23, and the plurality of elastic blocks respectively fit on the four sides of the weighing scale 3. The upper support column 252 is threadedly connected to the lead screw 27.

[0037] Further, the driving member 24 includes a rotating plate 241 rotatably connected to the bottom of the receiving plate 21. An L-shaped connecting rod 242 is rotatably connected to the rotating plate 241. An air pump 243 is disposed between the two sliders 23. The rotating plate 241 serves as a connecting and transmission component. The rotating plate 241 transmits the power of the air pump 243 to the slider 23 through the L-shaped connecting rod 242, converting the telescopic action of the air pump 243 into the horizontal movement of the slider 23. The L-shaped connecting rod 242 is used to connect the rotating plate 241 and the slider 23, converting the rotation of the rotating plate 241 into the linear movement of the slider 23. The telescopic action of the air pump 243 is transmitted to the slider 23 through the L-shaped connecting rod 242 and the rotating plate 241, enabling the slider 23 to automatically move to the four sides of the weighing scale 3 to realize the automatic limiting function.

[0038] Furthermore, the clamping member 29 includes a second motor 291 fixedly connected to the bottom of the connecting plate 28. A circular plate 292 is fixedly connected to the output end of the second motor 291. An arc-shaped groove 293 is formed in the circular plate 292. A fixing plate 294 is fixedly connected to the bottom of the connecting plate 28. A second sliding groove 295 is formed in the fixing plate 294. An arc-shaped clamping block 296 is slidably connected in the second sliding groove 295. The clamping force of the clamping member 29 can be adapted to weights of 25 kg or more of the weights 4. The second motor 291 is used to provide power to drive the circular plate 292 to rotate. The circular plate 292 serves as a connecting and transmission component, and the circular plate 292 transmits the power of the second motor 291 to the arc-shaped clamping block 296. The arc-shaped groove 293 is used to apply an extrusion force to the arc-shaped clamping block 296. The fixing plate 294 provides a stable support platform for the arc-shaped clamping block 296 and the sliding groove to ensure the smooth progress of the clamping action. The second sliding groove 295 serves as a guiding component for guiding the linear movement of the arc-shaped clamping block 296. The arc-shaped clamping block 296 can accurately clamp the weight 4 through the cooperation with the arc-shaped groove 293 and the second sliding groove 295 to ensure the stability of the weight 4 during the weighing process. By the reverse rotation of the second motor 291, the arc-shaped clamping block 296 can release the weight 4, facilitating the disassembly and replacement of the weight 4.

[0039] Furthermore, the end of the L-shaped connecting rod 242 is rotatably connected to the bottom of the slider 23. A plurality of L-shaped connecting rods 242 are provided and are evenly distributed in a circumferential manner. The bottom and the output end of the air pump 243 are respectively fixedly connected to the bottoms of two symmetric sliders 23. The circular plate 292 is rotatably connected between the fixing plate 294. The end of the arc-shaped clamping block 296 is inserted into the arc-shaped groove 293. Two arc-shaped grooves 293, second sliding grooves 295, and arc-shaped clamping blocks 296 are provided and are symmetrically arranged. The weight 4 is arranged between the two arc-shaped clamping blocks 296.

[0040] As can be seen from the above, the weighing instrument 3 to be calibrated is placed on the receiving plate 21, and the receiving plate 21 is located in the first receiving groove 111 to provide a stable support platform for the weighing instrument 3. The air pump 243 is started, and the output end of the air pump 243 pushes the L-shaped connecting rod 242 to move. The L-shaped connecting rod 242 drives the slider 23 to slide in the first sliding groove 22 through the connection of the rotating plate 241 for centering and clamping movement. An elastic block is arranged at the end of the slider 23, and the elastic block fits on the four sides of the weighing instrument 3, thereby fixing the weighing instrument 3 on the receiving plate 21 to achieve the automatic limit function. The first motor 26 is started, and the output end of the motor drives the lead screw 27 to rotate. Since the upper support column 252 is threadedly connected to the lead screw 27, the rotation of the lead screw 27 will cause the upper support column 252 to slide up and down along the lower support column 251, thereby adjusting the height of the weight 4 to adapt to weighing instruments 3 of different sizes and providing a reserved space for the weight 4. The second motor 291 is started, and through the extrusion force of the two arc-shaped grooves 293 on the circular plate 292, the two arc-shaped clamping blocks 296 perform an opening movement in the two second sliding grooves 295, thereby placing the weight 4 at the center of the weighing sensor of the weighing instrument 3. After the above steps are completed, the calibration program is started, and the weighing instrument 3 starts to weigh and record data. By comparing with the weight of the standard weight 4, the weighing accuracy of the weighing instrument 3 is calibrated. The weight 4 is placed at the center of the weighing sensor of the weighing instrument 3, and the force received by the weighing sensor of the weighing instrument 3 is most evenly distributed, which can avoid weighing errors caused by eccentric loading and ensure the accuracy of the weighing result. Moreover, by setting the clamping member 29, the weight 4 can be placed quickly and accurately, reducing the errors and time of manual operation and significantly improving the calibration efficiency.

[0041] Embodiment 2:

[0042] Please refer to Figure 6 As shown, this embodiment is basically the same as the previous embodiment. The difference is that a disassembly and assembly component 5 is arranged in the second receiving groove 112. The disassembly and assembly component 5 includes a spring 51 fixedly connected to the bottom of the second receiving groove 112. The end of the spring 51 is fixedly connected with a T-shaped plate 52. A clamping rod 53 is rotatably connected to the T-shaped plate 52. The end of the clamping rod 53 is fixedly connected with a clamping block 54. A connecting seat 55 is fixedly connected to the inner side wall of the second receiving groove 112. A clamping groove 56 is formed in the outer part of the lower support column 251. The spring 51 is used to provide elastic support and buffer external forces. The T-shaped plate 52 is connected to the spring 51 and is used to support the clamping rod 53. The clamping rod 53 is rotatably connected to the T-shaped plate 52 and is used to clamp the lower support column 251. The clamping block 54 is fixed to the end of the clamping rod 53 and cooperates with the clamping groove 56 of the lower support column 251 to realize the fixing and disassembly of the support column 25. The connecting seat 55 is used for the rotational connection of the clamping rod 53.

[0043] Specifically, the lower support column 251 is disposed on the top of the I-shaped plate 52. The clamping block 54 is clamped in the clamping groove 56. The clamping rod 53 is rotatably connected to the connecting seat 55. There are two clamping rods 53, clamping blocks 54, connecting seats 55 and clamping grooves 56, and they are symmetrically arranged.

[0044] As can be seen from the above, when the support column 25 is placed on the I-shaped plate 52, the spring 51 is tightened, the I-shaped plate 52 is pressed down, driving the two clamping rods 53 to perform a clamping movement, so that the clamping block 54 is clamped in the clamping groove 56. The support column 25 can be quickly installed and disassembled. Conversely, when the support column 25 is removed, after the clamping block 54 is disengaged from the clamping groove 56, the support column 25 is no longer fixed and can be easily taken out from the second receiving groove 112. The entire disassembly and assembly process is simple and fast, improving the flexibility of the calibration device and the usage efficiency of the calibration device. Moreover, the design of the disassembly and assembly component 5 enables the calibration device to quickly adapt to different calibration scenarios. And because the support column 25 can be quickly disassembled, the maintenance and replacement of the support column 25 become simpler, reducing the maintenance time and cost, and improving the reliability and economy of the calibration device.

[0045] Embodiment Three:

[0046] Please refer to Figure 7 As shown in the figure, this embodiment is basically the same as the previous embodiment, except that a stabilizing component 6 is provided at the bottom of the base 11. The stabilizing component 6 includes a threaded rod 61 rotatably connected to the bottom of the base 11. A first bevel gear 62 is fixedly connected to the threaded rod 61. A third motor 63 is fixedly connected to the bottom of the base 11. A second bevel gear 64 is fixedly connected to the output end of the third motor 63. The threaded rod 61 is used to support the grounding plate 65 and to adjust the vertical height of the grounding plate 65. The first bevel gear 62 is used to transmit power to the threaded rod 61. The third motor 63 is used to provide driving force for the second bevel gear 64. The second bevel gear 64 is used to transmit the power of the third motor 63 to the first bevel gear 62, so as to rotate the threaded rod 61.

[0047] Specifically, the stabilizing component 6 further includes a grounding plate 65. A plurality of sleeves 66 are fixedly connected to the bottom of the grounding plate 65. A plurality of sliding rods 67 are fixedly connected to the bottom of the base 11. The downward movement of the grounding plate 65 is used to lift the whole device. The sleeves 66 are used to support the threaded rod 61 and the sliding rods 67. The sliding rods 67 are used to provide guidance for the grounding plate 65.

[0048] Furthermore, the first bevel gear 62 meshes with the second bevel gear 64. The threaded rod 61 is threadedly connected to the sleeve 66 at the center of the grounding plate 65. A plurality of sliding rods 67 are slidably connected to the plurality of sleeves 66 at the ends of the grounding plate 65.

[0049] As can be seen from the above, when the device reaches the target area for operation, by starting the third motor 63, since the first bevel gear 62 meshes with the second bevel gear 64, the first bevel gear 62 drives the threaded rod 61 to rotate. Since the sleeve 66 at the center of the grounding plate 65 is threadedly connected to the threaded rod 61 and is guided by the slide rod 67, the up and down position of the grounding plate 65 is adjusted. When the grounding plate 65 slowly moves downwards, the entire device is lifted, and the wheels 13 do not contact the ground, making the device more stable during use, preventing the device from shifting, and reducing the influence of external factors on the calibration accuracy.

[0050] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0051] In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A weighing and calibration device for a weighing instrument with an automatic limit function, comprising a vehicle body (1), the vehicle body (1) including a base (11), a handrail (12) being provided at the top of the base (11), and at least two wheels (13) being symmetrically provided at the side of the base (11), characterized in that: The base (11) is respectively provided with a first receiving groove (111) and a second receiving groove (112), and a calibration assembly (2) is arranged on the base (11); The calibration assembly (2) includes a receiving plate (21) arranged in the first receiving groove (111). A first sliding groove (22) is formed in the receiving plate (21). A slider (23) is slidably connected in the first sliding groove (22). A driving member (24) is arranged at the bottom of the receiving plate (21). A support column (25) is arranged in the second receiving groove (112). The support column (25) includes a lower support column (251) arranged in the second receiving groove (112). An upper support column (252) is slidably connected in the lower support column (251). A first motor (26) is arranged in the lower support column (251). A lead screw (27) is fixedly connected to the output end of the first motor (26). A connecting plate (28) is rotatably connected to the top of the upper support column (252). A clamping member (29) is arranged at the end of the connecting plate (28). A weighing scale (3) is arranged on the top of the receiving plate (21). A weight (4) is arranged on the clamping member (29).

2. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 1, characterized in that: Both the first sliding groove (22) and the slider (23) are provided with a plurality of them and are evenly distributed in a circle. Elastic blocks are arranged at the ends of the plurality of sliders (23), and the plurality of elastic blocks are respectively attached to the four sides of the weighing scale (3). The upper support column (252) is threadedly connected with the lead screw (27).

3. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 2, characterized in that: The driving member (24) includes a rotating plate (241) rotatably connected to the bottom of the receiving plate (21). An L-shaped connecting rod (242) is rotatably connected to the rotating plate (241). An air pump (243) is arranged between the two sliders (23).

4. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 3, wherein: The clamping member (29) includes a second motor (291) fixedly connected to the bottom of the connecting plate (28). A circular plate (292) is fixedly connected to the output end of the second motor (291). An arc-shaped groove (293) is formed in the circular plate (292). A fixing plate (294) is fixedly connected to the bottom of the connecting plate (28). A second sliding groove (295) is formed in the fixing plate (294). An arc-shaped clamping block (296) is slidably connected in the second sliding groove (295).

5. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 4, characterized in that: The end of the L-shaped connecting rod (242) is rotatably connected to the bottom of the slider (23). A plurality of L-shaped connecting rods (242) are arranged and are evenly distributed in a circle. The bottom and the output end of the air pump (243) are respectively fixedly connected to the bottoms of two symmetric sliders (23). The circular plate (292) is rotatably connected to the fixing plate (294). The end of the arc-shaped clamping block (296) is inserted into the arc-shaped groove (293). Both the arc-shaped groove (293), the second sliding groove (295) and the arc-shaped clamping block (296) are provided with two and are symmetrically arranged. The weight (4) is arranged between the two arc-shaped clamping blocks (296).

6. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 1, characterized in that: A disassembly and assembly component (5) is arranged in the second accommodation groove (112). The disassembly and assembly component (5) includes a spring (51) fixedly connected to the bottom of the second accommodation groove (112). An end of the spring (51) is fixedly connected to a T-shaped plate (52). A clamping rod (53) is rotatably connected to the T-shaped plate (52). A clamping block (54) is fixedly connected to an end of the clamping rod (53). A connecting seat (55) is fixedly connected to an inner side wall of the second accommodation groove (112). A clamping groove (56) is formed in an outer portion of the lower support column (251).

7. An automatic weighing calibration device for a weighing instrument with an automatic limit function according to claim 6, characterized in that: The lower support column (251) is arranged on top of the T-shaped plate (52). The clamping block (54) is clamped in the clamping groove (56). The clamping rod (53) is rotatably connected to the connecting seat (55). Two clamping rods (53), clamping blocks (54), connecting seats (55) and clamping grooves (56) are provided and are symmetrically arranged.

8. A weighing and calibration device for a weighing instrument with an automatic limit function according to claim 1, characterized in that: A stabilizing component (6) is arranged at the bottom of the base (11). The stabilizing component (6) includes a threaded rod (61) rotatably connected to the bottom of the base (11). A first bevel gear (62) is fixedly connected to the threaded rod (61). A third motor (63) is fixedly connected to the bottom of the base (11). A second bevel gear (64) is fixedly connected to an output end of the third motor (63).

9. The weighing and calibration device of a weighing instrument with an automatic limit function according to claim 8, wherein: The stabilizing component (6) further includes a grounding plate (65). A plurality of sleeves (66) are fixedly connected to the bottom of the grounding plate (65). A plurality of sliding rods (67) are fixedly connected to the bottom of the base (11).

10. A weighing calibration device for a weighing instrument with an automatic limit function according to claim 9, characterized in that: The first bevel gear (62) meshes with the second bevel gear (64). The threaded rod (61) is in threaded connection with the sleeve (66) at the center of the grounding plate (65). The plurality of sliding rods (67) are slidably connected to the plurality of sleeves (66) at the ends of the grounding plate (65).

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