CN218705926U

CN218705926U - Flexible weighing device and stacker

Info

Publication number: CN218705926U
Application number: CN202222798469.7U
Authority: CN
Inventors: 宋艳萍; 周维存
Original assignee: Robo Technologiesautomation Suzhou Co ltd
Current assignee: Robo Technologiesautomation Suzhou Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-03-24
Anticipated expiration: 2032-10-24

Abstract

The utility model relates to a flexible weighing device and a stacker, which comprises a weighing sensor; the first flexible component comprises a bearing and a rotating shaft, the rotating shaft can be rotatably connected with the bearing, the weighing sensor is connected with the rotating shaft, and the detection stress direction of the weighing sensor is perpendicular to the axial direction of the rotating shaft; the second flexible component is connected with the weighing sensor, a support is arranged on the second flexible component, and the support extends towards the direction of the bearing. The device reduces error, damage that the collision produced through the support, extension sensor life, improvement measurement accuracy, and the fine motion through pivot and bearing is rotatory to carry out the adjustment of angle to the sensor, makes the application of force direction of goods on weighing sensor be on a parallel with weighing sensor's atress detection direction all the time, thereby the sensor consequently the atress is even makes measuring error reduce to within 1kg, and installation, dismantlement are very convenient simultaneously.

Description

Flexible weighing device and stacker

Technical Field

The utility model relates to a weighing device technical field especially relates to flexible weighing device and stacker.

Background

Along with the rapid development of automatic logistics storage, the requirements for automation, intellectualization and informatization are higher and higher, and manual data recording is time-consuming, labor-consuming and error-prone, so that various data of goods are digitalized into information and are acquired and identified by a computer. The weight of the goods is important data information, whether the weight of the goods can be accurately detected is an important standard for judging whether the automatic logistics storage is excellent or not. In the existing automatic warehouse, because of a plurality of warehouse inlets and warehouse outlets and a complex route, a weighing device is usually arranged on a stacker for carrying cargoes to detect the weight of the cargoes.

The existing stacker usually adopts a method of directly installing a parallel beam type weighing sensor at the bottom of a fork of the stacker to measure the weight of cargoes, but has the following problems: (1) When the parallel beam type weighing sensor measures data, accurate data can be obtained by uniform force application of an object to be detected, however, when a fork is in contact with a cargo, the position of the cargo is difficult to limit at a proper position, and the position of the cargo can be moved due to shaking during transportation of a stacker, so that the parallel beam type weighing sensor is unevenly stressed, and the obtained data has a large error with actual data; (2) Weighing sensor is when the stacker transports, because direct and stacker fork and fork base rigid connection, consequently can receive the effort influence when the stacker transports goods, takes place to rock, phenomenon such as collision leads to parallel beam formula weighing sensor measured data to appear the error, and fragile, short service life.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that overcome current weighing sensor because unable even atress or because rock, phenomenon such as collision make the detection data inaccuracy when detecting stacker goods weight, provide a flexible weighing device and stacker, alleviate the influence of external force through flexonics between weighing sensor and the stacker fork, prolonged weighing sensor's life, easily install simultaneously, dismantle the maintenance, make weighing sensor atress even, reduced detection error.

The utility model provides a flexible weighing device, which comprises a weighing sensor; the first flexible component comprises a bearing and a rotating shaft, the rotating shaft can be rotatably connected with the bearing, the weighing sensor is connected with the rotating shaft, and the detection stress direction of the weighing sensor is perpendicular to the axial direction of the rotating shaft; the second flexible component is connected with the weighing sensor, a support is arranged on the second flexible component, and the support extends towards the direction of the bearing.

In one embodiment of the present invention, the support is provided in a spherical structure.

In an embodiment of the invention, the support is provided in plurality.

In one embodiment of the present invention, the plurality of supports are disposed on the second flexible member at regular intervals.

In an embodiment of the present invention, a fastening bolt is disposed on the second flexible member, and an axial direction of the fastening bolt is perpendicular to an axial direction of the rotating shaft.

In an embodiment of the utility model, still include relative first loading board and the second loading board that sets up, the bearing by first loading board and second loading board clamping fixation.

In an embodiment of the present invention, the axial directions of the first loading plate and the second loading plate are both perpendicular to the axial direction of the rotating shaft.

In an embodiment of the present invention, the first loading board and the second loading board are horizontally disposed.

The utility model also provides a stacker, including above-mentioned arbitrary one flexible weighing device, flexible weighing device is connected with the fork of stacker.

In an embodiment of the present invention, the flexible weighing device is provided with two opposite flexible weighing devices.

Compared with the prior art, the technical scheme of the utility model have following advantage:

the flexible weighing device and the stacking machine adopt the flexible parts to install the weighing sensors, the rigid connection between the original sensor and the fork is converted into the flexible connection, the errors and the damage caused by collision are reduced through the support semi-circle, the service life is prolonged, and the measurement accuracy is improved; meanwhile, the angle of the sensor is adjusted through the micro-motion rotation of the rotating shaft and the bearing, so that the force application direction of the goods on the weighing sensor is always parallel to the stress detection direction of the weighing sensor, and the stress is uniform, so that the measurement error is reduced to be within +/-1 kg; the flexible weighing device can be directly arranged on two sides of the fork and the fork base, unnecessary time waste caused by adjusting and calibrating for many times is avoided, the flexible weighing device is very convenient to install, disassemble, replace and maintain, and accurate measuring data can be obtained.

Drawings

In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic front view of a flexible weighing apparatus in a preferred embodiment of the present invention;

FIG. 2 is a schematic left side view of a flexible weighing apparatus according to a preferred embodiment of the present invention;

FIG. 3 is a schematic top view of a flexible weighing apparatus according to a preferred embodiment of the present invention;

fig. 4 is a schematic structural diagram of a stacker installation flexible weighing device in the preferred embodiment of the present invention.

The specification reference numbers indicate: 10. a first flexible member; 11. a bearing; 12. a rotating shaft; 13. a weighing sensor; 20. a second flexible member; 21. supporting; 22. staring at the bolt; 31. a first bearing plate; 32. a second carrier plate; 40. a pallet fork; 41. a pallet fork base; 50. a nut; 51. a gasket; 52. a bolt; 53. a screw; 54. and a positioning pin.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1-4, the utility model discloses a flexible weighing device, include: a load cell 13; the first flexible component 10, the first flexible component 10 includes a bearing 11 and a rotating shaft 12, the rotating shaft 12 can be rotatably connected to the bearing 11, the load cell 13 is connected to the rotating shaft 12, and the detection force direction of the load cell 13 is perpendicular to the axial direction of the rotating shaft 12; and a second flexible member 20, wherein the second flexible member 20 is connected with the weighing sensor 13, a support 21 is arranged on the second flexible member 20, and the support 21 extends towards the direction of the bearing 11.

The flexible weighing device of the utility model is provided with a weighing sensor 13 for weighing, preferably, the weighing sensor 13 is arranged as a parallel beam type weighing sensor; the first flexible component 10 comprises a bearing 11 and a rotating shaft 12, the rotating shaft 12 can be rotatably connected with the bearing 11, the weighing sensor 13 is connected with the rotating shaft 12, and the first flexible component 10 is used for enabling the force application direction of the goods on the weighing sensor 13 to be always parallel to the force detection direction of the weighing sensor 13 through the rotation of the rotating shaft 12 no matter how the goods are placed on the fork 40 when the goods are placed on the stacker fork 40, so that the weighing sensor 13 is uniformly stressed to reduce the measurement error to be within +/-1 kg, the accuracy of measurement data is improved, the detection force application direction of the weighing sensor 13 is perpendicular to the axial direction of the rotating shaft 12, and the measurement data obtained through the perpendicular installation is more accurate compared with the non-perpendicular installation; the second flexible part 20 is used for realizing the connection between the weighing sensor and the fork 40 and transmitting the gravity of the goods on the fork 40 to the weighing sensor 13 to realize the measurement of data, the second flexible part 20 is connected with the weighing sensor 13, preferably, the second flexible part 20 and the weighing sensor 13 are in threaded connection through a screw 53, the operation is simple and convenient, the second flexible part 20 is provided with a support 21, the support 21 extends towards the direction of the bearing 11, the support 21 is used for reducing the acting force generated by shaking and collision during the transportation of the stacker, the service life of the weighing sensor 13 is prolonged, and meanwhile, the external force is reduced, so the measurement accuracy is also ensured; the traditional method is for installing weighing sensor directly in the fork bottom, but in order to obtain relatively accurate data, weighing sensor's mounted position need carry out adjustment calibration many times usually, installation, dismantlement are comparatively troublesome, waste time and energy when changing the maintenance, and flexible weighing device can directly set up in the junction of fork 40 and fork base 41, unnecessary time waste of having removed adjustment calibration position many times from, the installation, dismantle to change the maintenance very convenient to can obtain accurate measured data.

Preferably, the rotating shaft 12 is provided with a washer 51, a nut 50 and other fasteners to realize axial limiting of the weighing sensor 13, so that the weighing sensor is prevented from sliding randomly, and the measurement accuracy is ensured; preferably, the bearing 11 is provided as a ball bearing; preferably, one end of the rotating shaft 12, which is far away from the weighing sensor 13, is provided with a flange surface, and the rotating shaft 12 and the bearing 11 are stably connected by matching with a fastening piece such as a gasket 51 and the like; of course, the same effect of using the bearing 11 and the rotating shaft 12 can be achieved by disposing the weighing sensor 13 on a component such as a cam follower, and the like, and therefore, the invention is also within the protection scope of the invention.

As shown in fig. 1 and fig. 2, preferably, the second flexible member 20 is provided with a rectangular parallelepiped structure, the joint of the second flexible member and the fork 40 is provided with a "convex" structure, and the second flexible member is in threaded connection with the fork 40 through a bolt 52, so that the fork 40 is effectively fastened, and the effect is good; preferably, a clamping interface is arranged at the joint of the second flexible part 20 and the weighing sensor 13, so that the weighing sensor 13 is effectively fastened, and the mounting and dismounting of the weighing sensor 13 are facilitated; preferably, the second flexible part 20 is made of alloy steel material, has high strength, good toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance and no magnetism, and can effectively transmit force to the weighing sensor 13; preferably, the second flexible member is painted to effectively isolate water, oxygen, and the penetration of electrons, stray ions, etc., thereby further improving the resistance of the second flexible member 20 to corrosion and oxidation.

As shown in fig. 2, the support 21 is a spherical structure, which effectively reduces the influence of the sensor 13 caused by the action force generated by shaking and collision during transportation of the stacker, ensures the measurement accuracy of the sensor 13, and prolongs the service life of the sensor 13, and of course, in other embodiments, the support may be in other shapes or structures, such as a spring, to reduce the influence of the action force, and the shape structure of the support 21 may be flexibly adjusted according to actual requirements.

The support 21 is provided in plural, preferably two, and the two supports 21 are more effective in reducing the external force than the single support 21.

The plurality of supports 21 are disposed on the second flexible component 20 at regular intervals, and preferably, two supports 21 are disposed on two sides of the second flexible component along the length direction of the second flexible component 20 and located on the same horizontal plane, so that the effect of reducing the external acting force is better.

The second flexible component 20 is provided with a fastening bolt 22, the axial direction of the fastening bolt 22 is perpendicular to the axial direction of the rotating shaft 12, and the fastening bolt 22 has the following functions: when the pallet fork 40 is used for loading goods, the two sides of the load cell 13 are pressed downwards, the middle of the load cell 13 is supported upwards, and the load cell is easily pressed to bend and deform into a convex structure due to the concave structure of the load cell, the load cell 13 is provided with a downward supporting force by arranging the tightening bolt 22, and the load cell 13 is prevented from deforming, preferably, the joint of the second flexible part 20 and the load cell 13 is provided with an isosceles trapezoid-shaped opening for better placing the tightening bolt 22, and the effect of preventing the load cell 13 from deforming is achieved. Of course, in other embodiments, the effect of preventing the load cell 13 from deforming may be achieved by arranging other similar components, such as an adjusting bolt, and the like, and the adjustment may be flexible according to actual use requirements.

Flexible weighing device still including relative first loading board 31 and the second loading board 32 that sets up, bearing 11 is pressed from both sides tightly fixedly by first loading board 31 and second loading board 32, it is preferred, first loading board 31 and second loading board 32 all set up to cuboid form structure, for cylindric structure, contact area between loading board and the bearing can be increased to cuboid form structure, improve the locking installation effect, guarantee that weighing sensor 13 can be stable detect data, of course, first flexible part 10 is not necessarily realized the installation behind clamping bearing 11 through first loading board 31 and second loading board 32, in other embodiments, also can directly realize the installation through fasteners such as bolt or the adapting unit that sets up other structures directly.

The axial directions of the first bearing plate 31 and the second bearing plate 32 are both perpendicular to the axial direction of the rotating shaft 12, and the bearing plates are arranged in the axial direction of the structure which is not perpendicular to the rotating shaft 12, so that the bearing 11 can be clamped better, and the detection effect of the weighing sensor 13 is ensured.

The first bearing plate 31 and the second bearing plate 32 are horizontally arranged, and the bearing 11 can be clamped better by the structure relative to the non-horizontally arranged bearing plates, so that the detection effect of the weighing sensor 13 is ensured.

Example two

Referring to fig. 4, the utility model discloses a stacker, including embodiment one the flexible weighing device, flexible weighing device is connected with the fork of stacker.

In the stacker of the present invention, the flexible weighing device is connected to the fork of the stacker, and the flexible weighing device realizes the connection between the first flexible member 10 and the fork base 41 by arranging the bolt 52 on the first bearing plate 31 and the second bearing plate 32, and realizes the connection between the weighing sensor 13 and the fork 40 by arranging the bolt 52 on the second flexible member 20; preferably, the first bearing plate 31 and the second bearing plate 32 are both provided with positioning pins 54, which facilitates the positioning and installation of the flexible weighing device and the stacker. Because the fork 40 only deflects in a small range along the horizontal direction under the action of the weight of the goods, the first bearing plate 31 and the second bearing plate 32 clamp the bearing 11, and the axial stress of the bearing 11 along the bearing plates is smaller than the friction force provided by clamping, the bearing 11 cannot generate the linearity of axial displacement along the bearing plates although no other limiting parts are used for limiting the bearing 11.

The flexible weighing device is provided with two relatively, and preferably, two flexible weighing devices set up respectively at fork 40 and the fork base 41 junction site for take the average value after the simultaneous measurement, guarantee measurement accuracy, play the effect to about the dislocation of fork 40 simultaneously. Because other mechanisms exist between the fork 40 and the fork base 41, the second flexible part 20 and the load cell 13 are not directly leaned against the rotating shaft 12 as shown in fig. 4, so that the torque borne by the rotating shaft 12 when being stressed is far smaller than the torque provided by the clamping bearings 11 of the first bearing plate 31 and the second bearing plate 32, and the problems of overturning and the like cannot occur.

Stacker, owing to including embodiment one flexible weighing device, the advantage that consequently embodiment one has, this embodiment also all has.

Flexible weighing device and stacker's theory of operation be:

the flexible weighing devices are connected with the fork 40 through the second flexible part 20, the first bearing plate 31 and the second bearing plate 32 are connected with the fork base 41 to realize the installation on the stacker, when in use, once data is recorded when no goods are placed, once data is recorded after the goods are placed, the weight of the goods is obtained by subtracting the two data, and meanwhile, the data of the two flexible weighing devices are averaged to ensure the measurement precision; when goods are placed on the fork 40, no matter how the goods are placed on the fork 40, the force application direction of the goods on the weighing sensor 13 can be always parallel to the stress detection direction of the weighing sensor 13 through the rotation of the bearing 11 and the rotating shaft 12, the weighing sensor 13 is uniformly stressed, so that the measurement error is reduced to be within +/-1 kg, and the accuracy of measured data is improved; the influence of acting force generated by shaking and collision of the goods transported by the stacker on the weighing sensor is reduced by the hemispherical support 21, the service life of the weighing sensor 13 is prolonged, and meanwhile, the measuring accuracy is also guaranteed because the external force is reduced; a staring bolt 22 is arranged for providing a supporting force for the weighing sensor 13 and preventing the weighing sensor 13 from deforming into a convex structure due to pressure on two sides; the flexible weighing device can be directly arranged at the joint of the fork 40 and the fork base 41, unnecessary time waste caused by adjusting the calibration position for many times is avoided, the flexible weighing device is very convenient to install, disassemble, replace and maintain, and accurate measurement data can be obtained.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A flexible weighing apparatus, comprising:

a weighing sensor;

the first flexible component comprises a bearing and a rotating shaft, the rotating shaft can be rotatably connected with the bearing, the weighing sensor is connected with the rotating shaft, and the detection stress direction of the weighing sensor is perpendicular to the axial direction of the rotating shaft;

the second flexible component is connected with the weighing sensor, a support is arranged on the second flexible component, and the support extends towards the direction of the bearing.

2. The flexible weighing apparatus of claim 1, wherein: the support is arranged into a spherical structure.

3. The flexible weighing apparatus of claim 1 or 2, wherein: the support is provided in plurality.

4. The flexible weighing apparatus of claim 3, wherein: the plurality of supports are evenly spaced on the second flexible member.

5. The flexible weighing apparatus of claim 1, wherein: and the second flexible component is provided with a staring bolt, and the axial direction of the staring bolt is vertical to the axial direction of the rotating shaft.

6. The flexible weighing apparatus of claim 1 further comprising first and second oppositely disposed load bearing plates, said bearing being sandwiched between said first and second load bearing plates.

7. The flexible weighing apparatus of claim 6, wherein: the axial directions of the first bearing plate and the second bearing plate are both perpendicular to the axial direction of the rotating shaft.

8. The flexible weighing apparatus of claim 6 or 7, wherein: the first bearing plate and the second bearing plate are horizontally arranged.

9. A stacker is characterized by comprising the flexible weighing device of any one of claims 1 to 8, which is connected with a fork of the stacker.

10. The stacker according to claim 9, wherein: the flexible weighing device is oppositely provided with two flexible weighing devices.