Vehicle-mounted weighing device

Abstract

The utility model relates to the technical field of weighing equipment, and discloses a vehicle-mounted weighing device which comprises a chassis girder, a plurality of steel plate spring fixed lifting lugs, a plurality of strain gauges, a steel plate spring pin shaft, a steel plate spring movable lifting lug, a steel plate spring movable lifting lug support, a steel plate spring assembly, a U-shaped bolt, an axle hub shaft, a U-shaped bolt base plate and a U-shaped bolt nut. The device is simple in structure, high in reliability and good in stability, and any part of the vehicle does not need to be disassembled or changed during installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of weighing equipment, in particular to a vehicle on -vehicle weighing device. BACKGROUND

[0002] With the continuous progress of science and technology and the continuous improvement of living standards, the domestic automobile market competition intensifies, and users require good performance and high reliability of automobile products. Foreign major automobile companies use user load spectrum for product development, so that the automobile product strength is enough, the durability is good, the weight is light, and the quality is obviously better than domestic products. Domestic automobile industry independent product development mainly uses static strength design, most automobile parts do not have load test capability, do not have systematic load analysis technology, and do not have product development load spectrum. The product competitiveness has no obvious advantage. The automobile steel plate spring pin is very necessary to improve the reliability of the steel plate spring pin for the engineering vehicle with poor road conditions, the road impact is large, and the user overloading working environment is more severe, so that the durability of the automobile steel plate spring pin is examined in the product development process, so that it meets the use requirements of the whole vehicle.

[0003] In order to solve the above problems, the application number for the Chinese invention patent No. 201910212723.0 discloses a kind of commercial vehicle steel plate spring pin load test method, and the relationship between the load of steel plate spring and strain is measured on the steel plate spring pin shaft and used as the basis for the structural design of steel plate spring and the structural design of vehicle chassis. Since the method of pasting strain gauge on the steel plate spring pin shaft is complicated, the cost is high, and it is inconvenient to install and produce. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of vehicle on -vehicle weighing device with simple structure, high reliability, good stability and without disassembling or changing any component of vehicle during installation.

[0005] The utility model is realized as follows:

[0006] A kind of vehicle on -vehicle weighing device, including chassis girder, multiple steel plate spring fixed lugs, multiple strain gauges, steel plate spring pin shaft, steel plate spring movable lug, steel plate spring movable lug support, steel plate spring assembly, U type bolt, axle hub shaft, U type bolt backing plate, U type bolt nut;

[0007] The steel plate spring movable lug support is fixedly connected with the chassis beam, and the steel plate spring movable lug support is fixedly connected with a steel plate spring movable lug, the steel plate spring movable lug and the plurality of steel plate spring fixed lugs are fixedly connected with the steel plate spring assembly through the steel plate spring pin shaft, the strain gauges are fixedly arranged on the surfaces of the steel plate spring fixed lugs, the steel plate spring assembly is connected with the U-shaped bolt, the U-shaped bolt is fixedly connected with the U-shaped bolt base plate through the U-shaped bolt nut, and the axle shaft of the axle hub penetrates through the steel plate spring assembly and the axle hub of the axle, and is fixedly connected with the steel plate spring assembly and the axle hub of the axle, respectively.

[0008] Further, the plurality of strain gauges are electrically connected with strain amplifiers, respectively, and the strain amplifiers are electrically connected with an MCU controller.

[0009] Further, the number of the strain gauges is matched with the number of the steel plate spring fixed lugs.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] In actual application, part of the weight borne by the upper portion of the chassis beam is applied to the axle hub and the wheel through the steel plate spring fixed lugs, the steel plate spring fixed lugs generate micro-deformation in the process of transmitting the weight, the resistance values of the strain gauges attached to the surfaces of the steel plate spring fixed lugs also change, and the weight borne by the chassis beam is obtained according to the change of the resistance values of the strain gauges; the application has the advantages of simple structure, high reliability, good stability, and no need to disassemble or change any part of the vehicle during installation. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained according to these drawings without creative labor.

[0013] Figure 1 It is the structural schematic diagram of the utility model.

[0014] The drawings are as follows: chassis beam 1, a plurality of steel plate spring fixed lugs 2, a plurality of strain gauges 3, steel plate spring pin shaft 4, steel plate spring movable lug 5, steel plate spring movable lug support 6, steel plate spring assembly 7, U-shaped bolt 8, axle hub shaft 9, U-shaped bolt base plate 10, U-shaped bolt nut 11, strain amplifier 12, MCU controller 13. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0016] Please refer to Figure 1 A vehicle-mounted weighing device, comprising a chassis beam 1, a plurality of steel plate spring fixed lugs 2, a plurality of strain gauges 3, a steel plate spring pin shaft 4, a steel plate spring movable lug 5, a steel plate spring movable lug support 6, a steel plate spring assembly 7, a U-shaped bolt 8, an axle hub shaft 9, a U-shaped bolt pad 10, and a U-shaped bolt nut 11.

[0017] The steel plate spring movable lug support 6 and the plurality of steel plate spring fixed lugs 2 are fixedly connected with the chassis beam 1, the steel plate spring movable lug support 6 is fixedly connected with the steel plate spring movable lug 5, the steel plate spring movable lug 5 and the plurality of steel plate spring fixed lugs 2 are fixedly connected with the steel plate spring assembly 7 through the steel plate spring pin shaft 4, the strain gauges 3 are fixedly arranged on the surface of the steel plate spring fixed lugs 2, the steel plate spring assembly 7 is connected with the U-shaped bolt 8, the U-shaped bolt 8 is fixedly connected with the U-shaped bolt pad 10 through the U-shaped bolt nut 11, and the axle hub shaft 9 penetrates between the steel plate spring assembly 7 and the axle hub shaft 9 and is fixedly connected with the steel plate spring assembly 7 and the axle hub shaft 9, respectively.

[0018] A vehicle-mounted weighing method is applied to the above-mentioned vehicle-mounted weighing device. Part of the weight borne by the upper part of the chassis beam 1 is applied to the axle hub 9 and the wheel through the steel plate spring fixed lug 2. The steel plate spring fixed lug 2 generates micro-deformation inside during the transmission of the weight, and the resistance value of the strain gauge 3 attached to the surface of the steel plate spring fixed lug 2 also changes accordingly. The weight borne by the chassis beam 1 is obtained according to the change of the resistance value of the strain gauge 3.

[0019] Please refer to Figure 1A plurality of strain gauges 3 are respectively electrically connected with a strain amplifier 12, and the strain amplifier 12 is electrically connected with an MCU controller 13.

[0020] The strain amplifier 12 amplifies the signal of the corresponding strain gauge 3 and transmits the signal to the MCU controller 13, and the MCU controller 13 calculates the weight borne by the chassis beam 1 according to the signal.

[0021] Please refer to Figure 1 The number of the strain gauges 3 matches the number of the steel plate spring fixing lugs 2. Different vehicles have chassis beams 1 with different numbers of steel plate spring fixing lugs 2, and also have different numbers of strain gauges 3.

[0022] The strain gauges 3 are pasted on the surface of the steel plate spring fixing lugs 2, and the position of the strain gauges 3 pasted on the steel plate spring fixing lugs 2 is determined according to the structure of the steel plate spring fixing lugs 2 and the characteristics of the vehicle load.

[0023] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle on-board weighing apparatus, characterised in that: It include chassis beam (1), a plurality of steel plate spring fixed lug (2), a plurality of strain gauge (3), steel plate spring pin shaft (4), steel plate spring movable lug (5), steel plate spring movable lug support (6), steel plate spring assembly (7), U bolt (8), axle hub shaft (9), U bolt pad plate (10), U bolt nut (11); The steel plate spring movable lug support (6) and a plurality of the steel plate spring fixed lug (2) are fixedly connected with the chassis beam (1), the steel plate spring movable lug support (6) is fixedly connected with the steel plate spring movable lug (5), the steel plate spring movable lug (5) and a plurality of the steel plate spring fixed lug (2) are fixedly connected with the steel plate spring assembly (7) through the steel plate spring pin shaft (4), the strain gauge (3) is fixedly arranged on the surface of the steel plate spring fixed lug (2), the steel plate spring assembly (7) is connected with the U bolt (8), the U bolt (8) is fixedly connected with the U bolt pad plate (10) through the U bolt nut (11), the axle hub shaft (9) penetrates between the steel plate spring assembly (7) and the axle hub shaft (9), and is fixedly connected with the steel plate spring assembly (7) and the axle hub shaft (9) respectively.

2. A vehicle on-board weighing apparatus according to claim 1, characterised in that, A plurality of the strain gauge (3) are electrically connected with strain amplifier (12) respectively, and the strain amplifier (12) is electrically connected with MCU controller (13).

3. The vehicle on-board weighing device of claim 1, wherein, The number of the strain gauge (3) matches the number of the steel plate spring fixed lug (2).

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