Embedded multidirectional force transducer for truck compartment

Abstract

The utility model provides an embedded multidirectional force transducer for a truck compartment, which is characterized in that an elastic body is provided with a compartment side fixing part and a head side connecting part at different axial positions, a plurality of pairs of strain sensitive areas are arranged between the compartment side fixing part and the head side connecting part, and each pair of strain sensitive areas are symmetrically arranged relative to the central axis of the elastic body; the multiple pairs of strain sensitive areas are arranged at different positions in the circumferential direction with the central axis as the center, and the multiple pairs of strain gauges are arranged in the strain sensitive areas which the multiple pairs of strain gauges belong to respectively. The sensor is provided with a transmission mechanism for providing measurement data to a control system of the compartment or a control system of the vehicle head. According to the utility model, the force transducer is combined on the traction pin of the carriage and is associated with the traction seat of the vehicle head, and loads in multiple directions can be sensed. According to the utility model, the load is transmitted to the control system of the vehicle head or the carriage, so that the kinetic energy can be accurately output according to the actual situation, and the control system can realize efficient energy recovery and realize the purposes of energy conservation and emission reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of force value detection equipment, in particular to a multi-directional force measuring sensor embedded in a truck body. Background Art

[0002] Trucks are an important tool for daily freight transportation. There are countless trucks on the road every day, and their energy consumption and emissions have been continuously affecting the atmospheric environment. They are generally composed of a semi-truck and a truck body. Different road conditions and working conditions, such as flat roads, uphill, downhill, road quality, and turns, will also bring about changes in load, and such changes are often relatively large. It is worth it for the truck control system or the truck body control system to adjust the output of appropriate power or energy recovery according to the changes.

[0003] However, there is currently no multi-directional force sensor that can be integrated into the truck compartment side. Utility Model Content

[0004] The purpose of the utility model is to provide a truck compartment embedded multi-directional force sensor that can be installed on one side of the truck compartment to measure the drag load required on this side of the truck compartment and provide a practical signal to the control system so that it can control the output of appropriate kinetic energy according to the actual load changes.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] A truck compartment embedded multi-directional force sensor comprises an elastomer and a plurality of strain gauges, characterized in that the elastomer has a central axis, and a compartment side fixing portion and a vehicle head side connecting portion are arranged at different axial positions, the vehicle head side connecting portion is arranged as a structure that can be adaptably connected to the traction seat of the truck head, the elastomer has a plurality of pairs of strain sensitive areas arranged between the compartment side fixing portion and the vehicle head side connecting portion, each pair of strain sensitive areas is symmetrically arranged relative to the central axis of the elastomer, the plurality of pairs of strain sensitive areas are arranged at different positions in a circumferential direction centered on the central axis, the plurality of strain gauges is an even number, and are respectively arranged in the strain sensitive areas to which they belong; the sensor is provided with a transmission mechanism for providing measurement data to a compartment control system or a vehicle head control system.

[0007] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions or use these further technical solutions in combination:

[0008] The front side connecting portion is configured as a connecting column with upper and lower limiting structures.

[0009] The elastic body includes a load-bearing column; a countersunk hole is arranged in the upper part of the load-bearing column; the load-bearing column is provided with a plurality of pairs of stress concentration grooves symmetrically arranged on the outer wall of the countersunk hole to form the strain sensitive area, and the front side connecting part is arranged at the lower part of the load-bearing column.

[0010] The dimensions of the front-side connection part and the load-bearing column are in accordance with ISO 337 standard to achieve universality.

[0011] A CANbus communication mainboard is placed in the countersunk hole of the load-bearing column; the number of the CANbus communication mainboards can be one or more.

[0012] A strain sensitive area is formed between the inner wall of the bearing column countersunk hole and the stress concentration groove; the number of the strain sensitive areas is an even number of 2 to 8.

[0013] The front side connection part is arranged with connecting columns with upper and lower limiting structures to form a fixed groove, and the load-bearing column is provided with a transition thickness between the bottom of the countersunk hole of the load-bearing column and the upper end of the connecting column; the transition thickness is greater than 0.8 times the thickness of the lower groove wall of the fixed groove.

[0014] The carriage side connecting portion is located at the upper end of the load-bearing column and adopts an annular disk centered on the central axis.

[0015] The annular disk is provided with a plurality of through holes for connection; the annular disk is provided with a positioning pin which cooperates with the structural limit of the carriage side.

[0016] The countersunk hole of the load-bearing column is filled with sealing protective glue; the sealing protective glue wraps the CANbus communication mainboard.

[0017] The utility model combines the force sensor with the coupling king pin of the carriage, which is associated with the fifth wheel of the semi truck and can sense loads in multiple directions. Through the utility model, the load is transmitted to the control system of the semi truck or carriage, so that the kinetic energy can be accurately output according to the actual situation, and the control system can also achieve efficient energy recovery and achieve the purpose of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the location of the truck compartment embedded multi-directional force measuring sensor of the utility model in the truck.

[0019] Figure 2 The utility model is a schematic diagram of installing the truck compartment embedded multi-directional force sensor in a truck.

[0020] Figure 3 It is a front view of an embodiment of the utility model;

[0021] Figure 4 A vertical cross-sectional view of an embodiment of the utility model;

[0022] Figure 5 It is a transverse cross-sectional view of an embodiment of the utility model at a strain sensitive area;

[0023] Figure 6 It is a top view of the utility model; DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0025] Referring to the accompanying drawings, the utility model truck compartment embedded multi-directional force sensor 1 comprises an elastic body and a strain gauge 6, wherein the elastic body has a central axis O and is provided with a compartment side fixing portion 71 and a vehicle head side connecting portion 72 at different axial positions.

[0026] In the utility model, the mechanical structure of the force sensor serves as the connecting structure between the truck body 100 and the front 200, and a plurality of pairs of strain sensitive areas 111 are arranged between the fixing portion 71 on the body side and the connecting portion 72 on the front side, and are symmetrically arranged relative to the central axis O of the elastomer. The plurality of pairs of strain sensitive areas 111 are arranged at different positions in the circumferential direction centered on the central axis, wherein the strength of the elastomer with the plurality of strain sensitive areas 111 meets the requirements of the front towing load.

[0027] The multi-directional force sensor is correspondingly provided with a plurality of pairs of strain gauges 6, and the strain gauges 6 are respectively arranged (for example, by bonding) in respective strain sensitive areas 111; the sensor is provided with a transmission mechanism for providing measurement data to the control system of the carriage 100 or the control system of the front of the vehicle 200, and the control system may be a power management system.

[0028] The front connecting portion 72 is configured to be adaptable and connected to the traction seat 201 of the front of the truck, and the vehicle body side fixing portion 71 is configured to be able to be connected to the vehicle body or fixedly connected to the vehicle body.

[0029] The elastic body includes a load-bearing column 11; a countersunk hole 12 is arranged in the upper part of the load-bearing column 11; the load-bearing column 11 is provided with a plurality of pairs of stress concentration grooves 112 symmetrically arranged on the outer wall of the countersunk hole 12, and the stress concentration grooves can be grooves with a square cross-section, and a strain sensitive area 111 is formed between the inner wall of the load-bearing column countersunk hole 12 and the stress concentration grooves 112; the front side connecting part 72 is arranged at the lower part of the load-bearing column 11.

[0030] The front side connection part 72 is set as a connection column 721 with upper and lower limiting structures to form a front side connection part 72 in the form of a fixed groove. The load-bearing column 11 is provided with a transition thickness C between the bottom of the load-bearing column counterbore 12 and the upper end of the connection column 721. The transition thickness C is not only the upper groove wall thickness of the fixed groove at the part located outside the connection column 721, but also serves as an upper limiting structure; the transition thickness is greater than 0.8 times the lower groove wall thickness B of the fixed groove, and the lower groove wall of the fixed groove also serves as a lower limiting structure. The dimensions of the front side connection part and the load-bearing column are in accordance with ISO 337 standards to achieve universality.

[0031] The carriage side connection part 71 is located at the upper end of the load-bearing column 11 and is an annular disk centered on the central axis O. The annular disk is provided with a plurality of through holes 16 for connection; the annular disk is provided with a positioning pin 15 that cooperates with the structure limit on the carriage side.

[0032] The elastic body of the utility model adopts high-strength stainless steel 17-4PH, whose yield value reaches 1300Mpa, which is 50% higher than the traditional material 4340 (whose yield value is 850). After the sensor is loaded, the maximum stress value of the sensitive area is 300Mpa, and the safety factor is more than 4 times, which ensures the strength of the sensor.

[0033] The transmission mechanism for providing measurement data to the control system of the carriage 100 and / or the control system of the front of the vehicle 200 includes a CANbus communication mainboard 5, and the CANbus communication mainboard 5 is placed in the countersunk hole 12 of the load-bearing column 11; the number of the CANbus communication mainboards 5 can be one or more. The CANbus communication mainboard 5 is responsible for transmitting the data collected by the strain gauge to the outside, and specifically, it can be connected to the outside by a twisted pair cable 4. The CANbus communication mainboard 5 can convert the data collected by the strain gauge into a format that can be parsed by the control system of the carriage 100 or the control system of the front of the vehicle 200. The twisted pair cable 4 uses independent isolation transmission of power supply and signal. The transmission mechanism can also be a mechanism using wireless transmission.

[0034] The load on the truck compartment side is sensed by the multi-directional force sensor, and the CANbus communication mainboard converts the force value signal, processes it and transmits it to the power management system. The power management system starts the auxiliary power system and controls the power system vector output kinetic energy based on the received data, so that the output kinetic energy is maximized and the purpose of energy conservation and emission reduction is achieved. In addition, when the truck is going downhill, the power management system starts power recovery based on the signal of the multi-directional force sensor, recovers and stores the kinetic energy of the truck, and realizes electric energy recovery.

[0035] The countersunk hole 12 of the load-bearing column is filled with sealing protective glue 8 ; the sealing protective glue 8 wraps the CANbus communication mainboard 5 .

[0036] The opening of the counterbore 12 may also be provided with a sealing cover plate 2, the elastic body 1 is welded and connected with the sealing cover plate 2, and the sealing cover plate 2 is provided with a connecting threaded hole 21 for fixing the waterproof connector 3; the waterproof connector 3 may be integral or split; the twisted pair cable 4 passes through the waterproof connector. The waterproof connector meets the IP68 and IP69K protection grade requirements;

[0037] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be included in the protection scope of the present invention.

Claims

1. A multi-directional force sensor embedded in a truck compartment, comprising an elastic body and a plurality of strain gauges, characterized in that: The elastomer has a central axis, and a car body side fixing portion and a vehicle head side connecting portion are arranged at different axial positions, the vehicle head side connecting portion is arranged as a structure that can be adaptably connected to the traction seat of the front of the truck, the elastomer has a plurality of pairs of strain sensitive areas arranged between the car body side fixing portion and the vehicle head side connecting portion, each pair of strain sensitive areas is symmetrically arranged relative to the central axis of the elastomer, the plurality of pairs of strain sensitive areas are arranged at different positions in a circumferential direction centered on the central axis, the plurality of strain gauges are an even number, and are respectively arranged in the strain sensitive areas to which they belong; the sensor is arranged as a transmission mechanism for providing measurement data to a control system of the car body or a control system of the vehicle head.

2. The truck compartment embedded multi-directional force sensor as claimed in claim 1, characterized in that: The front side connecting portion is configured as a connecting column with upper and lower limiting structures.

3. The truck compartment embedded multi-directional force sensor according to claim 1 or 2, characterized in that: The elastic body includes a load-bearing column; a countersunk hole is arranged in the upper part of the load-bearing column; the load-bearing column is provided with multiple pairs of stress concentration grooves symmetrically arranged on the outer wall of the countersunk hole to form the strain sensitive area, and the front side connecting part is arranged at the lower part of the load-bearing column.

4. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: The dimensions of the front-side connection part and the load-bearing column are in accordance with ISO 337 standard to achieve universality.

5. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: A CANbus communication mainboard is placed in the countersunk hole of the load-bearing column; the number of the CANbus communication mainboards can be one or more.

6. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: A strain sensitive area is formed between the inner wall of the countersunk hole of the load-bearing column and the stress concentration groove; the number of the strain sensitive areas is an even number of 2 to 8.

7. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: The front side connection part is arranged with connecting columns with upper and lower limiting structures to form a fixed groove, and the load-bearing column is provided with a transition thickness between the bottom of the countersunk hole of the load-bearing column and the upper end of the connecting column; the transition thickness is greater than 0.8 times the thickness of the lower groove wall of the fixed groove.

8. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: The carriage side connecting portion is located at the upper end of the load-bearing column and adopts an annular disk centered on the central axis.

9. The truck compartment embedded multi-directional force sensor as claimed in claim 8, characterized in that: The annular disk is provided with a plurality of through holes for connection; the annular disk is provided with a positioning pin which cooperates with the structural limit of the carriage side.

10. The truck compartment embedded multi-directional force sensor as claimed in claim 3, characterized in that: The countersunk hole of the load-bearing column is filled with sealing protective glue; the sealing protective glue wraps the CANbus communication mainboard.

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