CN216695233U - Weighing pressure sensor applied to vehicle - Google Patents
Weighing pressure sensor applied to vehicle Download PDFInfo
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- CN216695233U CN216695233U CN202121911425.XU CN202121911425U CN216695233U CN 216695233 U CN216695233 U CN 216695233U CN 202121911425 U CN202121911425 U CN 202121911425U CN 216695233 U CN216695233 U CN 216695233U
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Abstract
The utility model discloses a weighing pressure sensor applied to a vehicle, which comprises a strain sensing module and a supporting structure module, wherein the strain sensing module is an annular metal block, and at least four resistance strain gauges are uniformly distributed on the inner wall of the annular metal block; the supporting structure module is two cover plates which are vertically attached and fixed, and the strain sensing module is arranged in a groove on the cover plate; according to the utility model, the accurate detection of the vehicle load is realized through the resistance strain gauges uniformly arranged on the inner sides of the annular metal blocks, meanwhile, through the support structure module, on one hand, the strain sensing module can be protected, on the other hand, the connection between the traditional sensor and the vehicle is improved, and the traffic safety problem possibly generated in the traditional connection structure is avoided.
Description
Technical Field
The utility model relates to the field of vehicle sensors, in particular to a weighing pressure sensor applied to a vehicle.
Background
The current vehicle-mounted weighing sensor scheme mainly comprises a weighing pressure sensor and a deformation displacement sensor.
The existing weighing pressure sensors mainly comprise cantilever beam weighing sensors, spoke type pressure sensors, S-shaped tension and compression sensors, tension sensors, micro sensors, diaphragm box type sensors, column type sensors, hanging type sensors, multi-dimensional force sensors, static torque sensors, dynamic torque sensors and the like, the sensors are used in the engineering field of various industries, the measured data and the precision of various applications are different, and a certain product needs to be selected according to requirements.
In the application field of the vehicle-mounted weighing system, the conventional weighing pressure sensor products listed above cannot be applied to the specific engineering application due to the factors of narrow installation space, frequent vibration impact, large pretightening force and the like. The large-range pressure sensor is too large in size and cannot be installed; the sensor with smaller size has too small measuring range and can not meet the requirement of bearing capacity required in the field of vehicle-mounted weighing application.
The deformation displacement sensor detects the micro-deformation variable or displacement of the vehicle frame or the vehicle axle and converts the micro-deformation variable or displacement into weight through an algorithm, and the defect is that the material characteristics of the vehicle frame or the vehicle axle are uncertain, so that the acquired micro-deformation variable or displacement is uncontrollable, the precision is low, and the error is large.
The present application proposes a solution to these problems.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a weighing pressure sensor applied to a vehicle, which can accurately detect the load of the vehicle, has small volume, thin thickness, large measuring range and high precision, is convenient to install, does not change the original structure of the vehicle, and can improve the driving safety.
The technical scheme is as follows: the utility model relates to a weighing pressure sensor applied to a vehicle, which comprises a strain sensing module and a supporting structure module, wherein the strain sensing module is an annular metal block, at least four resistance strain gauges are uniformly arranged on the inner wall of the annular metal block, and the resistance strain gauges form a bridge circuit and are electrically connected with an external monitoring device;
the supporting structure module is provided with a positioning pin through hole for being fixedly connected with a vehicle, and the supporting structure module is further provided with two first grooves for placing the strain sensing modules.
Preferably, straight edges which are symmetrical in pairs are arranged on the outer circle of the circular ring-shaped metal block, the size of the outer circle is the same as that of the first groove, silica gel is filled in the inner circle of the circular ring-shaped metal block, and the silica gel is used for protecting the resistance strain gauge.
Preferably, the supporting structure module comprises an upper cover plate, a lower cover plate and a positioning pin fixing piece, a first positioning pin through hole is formed in the center of the upper cover plate, and the first grooves are symmetrically formed in two sides of the first positioning pin through hole; a second positioning pin through hole is formed in the center of the lower cover plate, and the size of the second positioning pin through hole is the same as that of the first positioning pin through hole; the top of the positioning pin fixing piece is provided with a second groove matched with a screw cap head protruding from the bottom of a spring steel plate in the vehicle, and the bottom of the positioning pin fixing piece is provided with a protrusion matched with a concave pit groove in the top plane of a vehicle middle axle; the upper cover plate is connected with the lower cover plate in a screw fitting mode, the first positioning pin penetrating hole and the second positioning pin penetrating hole are located in the same vertical plane, the positioning pin fixing piece penetrates through the first positioning pin penetrating hole and the second positioning pin penetrating hole, and the bottom of the positioning pin fixing piece protrudes to penetrate through the second positioning pin penetrating hole.
Preferably, a lateral threading hole is formed in the lower cover plate corresponding to the first groove, and a cable connected with an external monitoring device is arranged in the lateral threading hole.
Preferably, the height of the circular metal block is between 5 and 15mm, the outer diameter is between 20 and 60mm, the inner diameter is between 10 and 55mm, and the top of the circular metal block is higher than that of the rectangular metal block.
Preferably, the circular metal block is made of a material with high strength, strong impact toughness and high wear resistance: high strength manganese or alloy steels.
Has the advantages that:
(1) according to the utility model, through the arrangement of the strain sensing module, the measurement precision is improved, and the range of detecting the vehicle-mounted weight is expanded;
(2) the resistance strain gauges uniformly arranged on the inner sides of the annular metal blocks realize accurate detection of the load of the vehicle, and compensate errors caused by unbalance loading;
(3) the strain sensing module can be protected by the supporting structure module, the connection between the traditional sensor and a vehicle is improved, the driving safety problem possibly caused by the traditional connection structure is avoided, meanwhile, the strain sensing module for collecting data is fixed from the forward direction and the lateral direction, and the displacement of the strain sensing module caused by external force in the using process is avoided.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a top view of the strain sensing module of the present invention;
FIG. 3 is a side view of the support structure of the present invention;
FIG. 4 is a top view of the lower deck of the present invention;
FIG. 5 is a side view of the locating pin fixture of the present invention;
fig. 6 is a side sectional view of the present invention when mounted on a vehicle.
Detailed Description
The utility model is further illustrated with reference to specific examples.
As shown in fig. 1-4, which are schematic structural diagrams of the present invention, the present invention includes a strain sensing module 1 and a supporting structure module 2, in this embodiment, the strain sensing module 1 is a circular metal block 3, the height of which is 12mm, the outer diameter of which is 59mm, and the inner diameter of which is 50mm, eight resistive strain gauges 4 are uniformly arranged on the inner side of the circular metal block 3, and the resistive strain gauges 4 form a bridge circuit and are electrically connected to an external monitoring device, so as to transmit a detection signal to an external detection device.
In the embodiment, considering that the utility model is applied to the field of vehicle load detection, the ring-shaped metal block 3 is installed at the joint of the vehicle spring steel plate 5 and the axle 6, needs to be used for a long time, and is exposed to a severe working environment along with the lengthening of the working time, so that the ring-shaped metal block is made of 60Si2Mn manganese steel, and the manganese steel has high strength, strong impact toughness, high wear resistance, certain toughness and plasticity, and can effectively prolong the service life of the utility model.
In this embodiment, the supporting structure module 2 includes an upper cover plate 21, a lower cover plate 22 and a positioning pin fixing member 23, a first positioning pin through hole 24 is formed in the center of the upper cover plate 21, the first groove 25 is symmetrically formed in two sides of the first positioning pin through hole 24, similarly, a second positioning pin through hole 26 is formed in the center of the lower cover plate 22, the second positioning pin through hole 26 and the first positioning pin through hole 24 have the same size, the upper cover plate 21 and the lower cover plate 22 are connected through screw fitting, and the first positioning pin through hole 24 and the second positioning pin through hole 26 are located in the same vertical plane.
The locating pin fixing piece 23 is used for locating and fixing the supporting structure module 2, a second groove 27 is formed in the top of the locating pin fixing piece 23, a protrusion 28 is arranged at the bottom of the locating pin fixing piece, the locating pin fixing piece 23 penetrates through the first locating pin through hole 24 and the second locating pin through hole 26, the second groove 27 in the top of the locating pin fixing piece is mutually buckled with a nut head at the bottom of the spring steel plate 5, the protrusion 28 in the bottom of the locating pin fixing piece penetrates through the second locating pin through hole 26 and then extends into a concave pit groove in the top plane of the axle 6, the pit groove is mutually buckled with the pit groove, and the supporting structure module 2 fixes the whole device between the spring steel plate 5 and the axle 6 of the vehicle through the locating pin fixing piece 23.
In this embodiment, be provided with the straight flange of two bisymmetry on the excircle of the ring shape metal block 3 in the response module of meeting an emergency 1, the excircle form is the same with first recess 25 size, be convenient for ring shape metal block 3 set up back in first recess 25, buckle with first recess 25 mutually, ring shape metal block 3 exceeds first recess 25 simultaneously, and ring shape metal block 3's top exceeds the top of upper cover plate 21, on the lower cover plate 22 that first recess 25 corresponds, be provided with side direction through wires hole 29, be provided with the cable that response module of meeting an emergency 1 and external monitoring device are connected in the side direction through wires hole 29, still pack silica gel in ring shape metal block 3's interior circle simultaneously, a resistance response piece 4 in the response module of meeting an emergency 1 is used for the protection.
As shown in fig. 5, which is a side cross-sectional view of the present invention installed between the spring steel plate 5 and the axle 6 of the vehicle, part a of the drawing is the present invention, the head of the screw cap protruding from the bottom of the spring steel plate 5 extends into the second groove 27 at the top of the positioning pin fixing member 23, and the protrusion 28 at the bottom of the positioning pin fixing member 23 extends into the pit groove on the top plane of the axle 6, so that the present invention is fixed between the spring steel plate 5 and the axle 6, and after the present invention is installed on the vehicle, the present invention will not slide during the running process of the vehicle, the accuracy of the vehicle-mounted weight detection can be ensured, and the safety of the vehicle during the running process can also be ensured.
The annular metal block 3 adopted by the strain sensing module 1 belongs to an axisymmetric structure in mechanics, the annular metal block 3 belongs to a compression bar when stressed, and the internal stress distribution is also axisymmetric. The stress state of each point on the inner surface of the circular metal block 3 is a simple stress state, and the output pressure strain values of the resistance strain gauges 4 attached to different positions of the inner surface are the same, so that the measurement precision is improved. In addition, the height of the annular metal block 3 is not high and is only 12mm, so that the phenomenon of instability of the pressure rod can not occur when a force is applied, and the pressure range for measuring the load of the vehicle is further expanded.
According to the utility model, through the design of the supporting structure module 2, the strain sensing module 1 can be prevented from being directly impacted when a vehicle is subjected to external force in the driving process, the strain sensing module 1 is protected in an all-around manner, the detection accuracy and the service life are prevented from being influenced, meanwhile, the traditional hole for a threading lead is designed on the lower cover plate 22 in the supporting structure module 2, the strength and the fatigue of the strain sensing module 1 are not influenced, the service life of the whole body is further prolonged, and finally, the resistance strain gauge 4 is uniformly designed on the inner wall of the circular ring-shaped metal block 3, so that the contact surface between the top of the circular ring-shaped metal block 3 and the vehicle is ensured to be a plane, and the detection of the load of the vehicle is not influenced.
Claims (6)
1. A weighing pressure sensor applied to a vehicle is characterized in that: the device comprises a strain sensing module (1) and a supporting structure module (2), wherein the strain sensing module (1) is a circular metal block (3), at least four resistance strain gauges (4) are uniformly arranged on the inner wall of the circular metal block (3), and the resistance strain gauges (4) form a bridge circuit and are electrically connected with an external monitoring device;
the supporting structure module (2) is provided with a positioning pin through hole for being fixedly connected with a vehicle, and the supporting structure module (2) is further provided with two first grooves (25) for placing the strain sensing modules.
2. The weighing pressure sensor applied to the vehicle as claimed in claim 1, wherein: be provided with the straight flange of two bisymmetry on the excircle of ring shape metal block (3), outer circular form is the same with first recess (25) size, it has silica gel to fill in the interior circle of ring shape metal block, silica gel is used for protection resistance foil gage (4).
3. The weighing pressure sensor applied to the vehicle as claimed in claim 1, wherein: the supporting structure module (2) comprises an upper cover plate (21), a lower cover plate (22) and a positioning pin fixing piece (23), a first positioning pin through hole (24) is formed in the center of the upper cover plate (21), and the first grooves (25) are symmetrically formed in two sides of the first positioning pin through hole (24); a second positioning pin through hole (26) is formed in the center of the lower cover plate (22), and the size of the second positioning pin through hole (26) is the same as that of the first positioning pin through hole (24); the top of the locating pin fixing piece (23) is provided with a second groove (27) matched with a screw cap head protruding from the bottom of a spring steel plate in the vehicle, and the bottom of the locating pin fixing piece (23) is provided with a protrusion (28) matched with a concave pit groove in the top plane of a vehicle middle axle; the upper cover plate (21) is connected with the lower cover plate (22) in a screw fitting mode, the first positioning pin through hole (24) and the second positioning pin through hole (26) are located in the same vertical plane, the positioning pin fixing piece (23) penetrates through the first positioning pin through hole (24) and the second positioning pin through hole (26), and the bottom protrusion (28) of the positioning pin fixing piece (23) penetrates through the second positioning pin through hole (26).
4. A weighing pressure sensor for a vehicle according to claim 3, wherein: the position that corresponds first recess (25) on lower cover plate (22) is provided with side direction through wires hole (29), be provided with the cable that strain induction module (1) and external monitoring device are connected in side direction through wires hole (29).
5. The weighing pressure sensor applied to the vehicle as claimed in claim 1, wherein: the height of the circular metal block (3) is between 5 and 15mm, the outer diameter is between 20 and 60mm, the inner diameter is between 10 and 55mm, and the top of the circular metal block (3) is higher than that of the upper cover plate (21).
6. The weighing pressure sensor applied to the vehicle as claimed in claim 1, wherein: the circular ring-shaped metal block (3) is made of materials with high strength, strong impact toughness and high wear resistance: high strength manganese or alloy steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121911425.XU CN216695233U (en) | 2021-08-16 | 2021-08-16 | Weighing pressure sensor applied to vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121911425.XU CN216695233U (en) | 2021-08-16 | 2021-08-16 | Weighing pressure sensor applied to vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216695233U true CN216695233U (en) | 2022-06-07 |
Family
ID=81823346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121911425.XU Active CN216695233U (en) | 2021-08-16 | 2021-08-16 | Weighing pressure sensor applied to vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216695233U (en) |
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2021
- 2021-08-16 CN CN202121911425.XU patent/CN216695233U/en active Active
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