CN-116675157-B - Working bucket weighing device, method, system, engineering machine and readable storage medium

Abstract

The invention relates to engineering machinery weighing equipment, and provides a working bucket weighing device which comprises a swinging mechanism mounting seat, a swinging mechanism, a weighing sensor and a working bucket mounting seat used for connecting a working bucket, wherein the swinging mechanism mounting seat is connected with the swinging mechanism, the weighing sensor is mounted at one end of an output shaft of the swinging mechanism, the working bucket mounting seat can be rotatably connected with the weighing sensor, a rotation axis between the two is perpendicular to the central axis of the output shaft, and the swinging mechanism mounting seat is provided with a radial bearing structure used for bearing radial load of the working bucket mounting seat. In addition, the invention also provides a working bucket weighing method, a weighing system, engineering machinery and a readable storage medium. The working bucket weighing device can effectively eliminate the influence of unbalanced load of the working bucket on weighing and ensure the accuracy of weighing results.

Inventors

• SHE LINGJUAN
• TAN LONGLI
• ZHANG PENG
• YIN LI
• XIANG SHIJIE

Assignees

• 中联重科股份有限公司

Dates

Publication Date

20260505

Application Date

20230424

Claims (16)

1. 1. The utility model provides a working bucket weighing device, its characterized in that includes swing mechanism mount pad (31), swing mechanism (32), weighing sensor (33) and is used for connecting working bucket (4) working bucket mount pad (36), swing mechanism mount pad (31) with swing mechanism (32) are connected, weighing sensor (33) install in one end of output shaft (321) of swing mechanism (32), working bucket mount pad (36) rotationally connect weighing sensor (33), and the axis of rotation between the two perpendicular to the central axis of output shaft (321) for working bucket mount pad (36) have the degree of freedom that can rotate from top to bottom along this central axis, swing mechanism mount pad (31) are equipped with and are used for bearing the radial bearing structure of radial load of working bucket mount pad (36), in order to can retrain the degree of freedom of rotation of working bucket mount pad (36).
2. 2. The bucket weighing apparatus of claim 1, wherein the radial bearing structure comprises a rolling bearing (34) and a bearing mount (35) for mounting the rolling bearing (34), the bearing mount (35) being connected to the swing mechanism mount (31), the bucket mount (36) being provided with a guide portion nested within the rolling bearing (34), the rolling bearing (34) being coaxially arranged with the output shaft (321) for carrying radial loads of the bucket mount (36).
3. 3. The bucket weighing device according to claim 2, characterized in that the rolling bearing (34) comprises a first rolling bearing (341) and a second rolling bearing (342) which are respectively positioned at the upper end and the lower end of the swinging mechanism mounting seat (31), the bearing mounting seat (35) is provided with a first bearing mounting seat (351) for mounting the first rolling bearing (341) and a second bearing mounting seat (352) for mounting the second rolling bearing (342), the guide part comprises a first boss (361) protruding upwards and a second boss (362) protruding downwards, the first boss (361) is sleeved in the first rolling bearing (341), and the second boss (362) is sleeved in the second rolling bearing (342).
4. 4. A bucket weighing apparatus according to claim 3, wherein in the assembled state, the lower end surface of the first rolling bearing (341) abuts against the stepped surface of the first boss (361), and a runout gap (T) is formed between the upper end surface of the second rolling bearing (342) and the stepped surface of the second boss (362).
5. 5. A bucket weighing apparatus according to any one of claims 1-4, characterized in that the bucket mounting (36) is pivotally connected to the load cell (33) by a pin (37), the central axis of the pin (37) being perpendicular to the central axis of the output shaft (321).
6. 6. The weighing device according to any one of claims 1-4, characterized in that the weighing sensor (33) is a pressure type weighing sensor mounted on the upper end of the output shaft (321) of the swinging mechanism (32), and the working bucket mounting seat (36) is connected with the upper end surface of the weighing sensor (33), or The weighing sensor (33) is a tension type weighing sensor arranged at the lower end of an output shaft (321) of the swing mechanism (32), and the working bucket mounting seat (36) is connected with the lower end face of the weighing sensor (33).
7. 7. The bucket weighing apparatus of any one of claims 1-4, wherein a buffer (38) is provided between the load cell (33) and the upper or lower end of the output shaft (321) of the swing mechanism (32).
8. 8. A bucket weighing apparatus according to any one of claims 7, characterized in that the load cell (33) and the buffer pad (38) are jointly connected to the output shaft (321) of the swing mechanism (32) by means of bolts (39).
9. 9. A method of weighing a bucket, characterized in that a bucket weighing apparatus according to any one of claims 1-8 is used, said weighing method comprising the steps of: and collecting the load value of the working bucket (4) in the weighing direction in real time, collecting the angle value between the weighing direction of the working bucket (4) and the plumb line, and calculating the actual load of the working bucket (4) according to the load value and the angle value.
10. 10. The bucket weighing method according to claim 9, characterized in that the actual load G 2 of the bucket (4) is calculated according to the following equation: wherein N is the load value, And G 1 is the load value of the working bucket (4) in an idle state for the angle value.
11. 11. A method of weighing a bucket according to claim 9, characterized in that after obtaining the actual load of the bucket (4), it further comprises the step of controlling the emission of an alarm signal in case the actual load is greater than a weight limit value.
12. 12. A bucket weighing system, characterized by comprising a weighing device (3), an angle sensor (41) and a controller (11), the weighing device (3) being a bucket weighing device according to any one of claims 1-8, the angle sensor (41) being arranged on the bucket (4) for detecting in real time an angle value between the bucket (4) and a plumb line, the controller (11) being electrically connected to the weighing sensor (33) and the angle sensor (41), the controller (11) being capable of executing the bucket weighing method according to any one of claims 9-11.
13. 13. A bucket weighing system according to claim 12, characterized in that said controller (11) is provided with a filter (12) capable of filtering the output signals of said weighing sensor (33) and said angle sensor (41).
14. 14. A working machine comprising a bucket weighing system according to any one of claims 12-13.
15. 15. The working machine according to claim 14, characterized in that the working machine is an overhead working truck comprising a chassis (1), an actuating arm (2), the weighing device (3) and the working bucket (4).
16. 16. A readable storage medium having stored thereon executable instructions for implementing the method of weighing a work bucket according to any one of claims 9-11 when executed by a machine.

Description

Working bucket weighing device, method, system, engineering machine and readable storage medium Technical Field The invention relates to engineering machinery weighing equipment, in particular to a working bucket weighing device. In addition, the invention also relates to a working bucket weighing method, a weighing system, a engineering machine and a readable storage medium. Background The working bucket is widely applied to engineering mechanical equipment, such as high-altitude operation equipment, emergency fire-fighting equipment and the like. Taking an overhead working truck as an example, the function of a working bucket is mainly to provide working sites and place working tools for overhead working personnel. As a man-carrying device, a working bucket is required to be specified with a rated carrying capacity during design and manufacture. When the platform is overloaded, various emergency situations easily occur, so that potential safety hazards are generated. Meanwhile, the load constraint also limits the maximum working range of the overhead working truck, when the self weight and the load of the working bucket are large, the counterweight is required to be increased or the unfolding distance of the working arm is required to be reduced in order to avoid the whole truck from tipping, so that the working efficiency of the overhead working truck is greatly limited. In the prior art, the following schemes exist for weighing the working hopper of the overhead working truck: 1. Referring to the Chinese patent publication (CN 112723268A), a working bucket can be lifted by stretching and retracting an actuating cylinder, the pressure of a rodless cavity of the actuating cylinder can be changed along with the change of the load of the working bucket and the angle of an actuating arm, the change can be calculated by a reasonable mathematical formula, and the load of the working bucket can be calculated by only detecting the pressure of the rodless cavity of the actuating cylinder and the angle of the actuating arm. However, when the actuating arm is started and stopped, the pressure of the rodless cavity of the oil cylinder generates larger fluctuation, the pressure of the rodless cavity can be influenced by the actual operation condition of the equipment, so that the accuracy of a measurement result is low, the influence of unbalanced load cannot be eliminated, namely, the same heavy object is placed at different positions in the working bucket, and different measurement results can be obtained. 2. Referring to the Chinese patent publication (CN 201983846U), a working bucket is connected with the upper part of a supporting shaft, the whole weight from the working bucket is received, a pressure plate in the middle of the supporting shaft is pressed on a sensor through a thrust bearing, the lower end of the supporting shaft is arranged in a shaft sleeve of a platform bracket, a pair of rolling ball bearings are arranged up and down between the shaft and the shaft sleeve, under the condition that the weight in the working bucket causes unbalanced load, the upper and lower pair of rolling ball bearings bear radial forces with equal magnitudes and opposite directions, and a couple formed by the forces counteracts bending moment caused by the offset load. And along the vertical direction, the bearing does not bear any axial force, so that all the forces along the vertical direction are borne by the weighing sensor, and the load in the working bucket can be accurately detected. However, the load in the working platform of the scheme is firstly transmitted to the weighing sensor through the thrust bearing, a pair of rolling ball bearings for counteracting unbalanced load is arranged below the thrust bearing, and when the working bucket is deformed due to bearing, the unbalanced load can affect the weighing mechanism, so that the left bearing force and the right bearing force of the thrust bearing are different, the weighing sensor still bears a part of unbalanced load, and the result measurement is inaccurate. Extremely, even if a pair of bearings is not provided, the working bucket can keep stable in structure, so that the scheme cannot strictly ensure that the weighing sensor is not affected by unbalanced load. Disclosure of Invention The invention aims to solve the technical problem of providing a working bucket weighing device which can effectively eliminate the influence of unbalanced load of a working bucket on weighing and ensure the accuracy of a weighing result. The invention also solves the technical problem of providing a working bucket weighing method which can accurately measure the actual load of the working bucket and effectively prevent overload. Correspondingly, the invention provides a weighing system of the working bucket, which can accurately measure the actual load of the working bucket and effectively prevent overload. The invention further aims to solve the technical problem of providing t