CN215767010U - Automobile two-force rod piece calibration device - Google Patents

Abstract

The utility model provides a calibration device for two force rods of an automobile, which comprises a bottom plate, a first support column, a second support column, a movable cross beam, a load sensor, a clamping assembly and a loading assembly, wherein the first support column and the second support column are respectively arranged at two opposite sides of the bottom plate; the loading assembly is arranged on the movable cross beam, the clamping assembly is located right below the loading assembly, the clamping assembly is fixedly connected to the upper end of the load sensor, and the lower end of the load sensor is fixed on the bottom plate. The device has the advantages of simple structure, small occupied space, easy disassembly and assembly, convenient movement and flexible application to calibration of rod pieces with various structures, thereby improving the working efficiency of testing.

Description

Automobile two-force rod piece calibration device

Technical Field

The utility model relates to the technical field of automobile part testing, in particular to an automobile two-force rod piece calibration device.

Background

The road spectrum acquisition device comprises a plurality of rod pieces, strain gauges are attached to the rod pieces, strain generated on the rod pieces in the advancing process of an automobile can be acquired through the strain gauges, and the sensitivity coefficients of the strain gauges determine the accuracy of data acquisition, so that the strain gauges on all the rod pieces need to be calibrated before road spectrum acquisition so as to determine the sensitivity coefficients.

It is known that most laboratories use a material testing machine or a hydraulic single cylinder to calibrate the sensitivity coefficient of a strain gauge on a rod. When the material testing machine is used for calibrating an automobile rod piece, a hydraulic chuck needs to be disassembled or a rod clamping wedge needs to be replaced, wherein the hydraulic chuck is heavy, and the upper hydraulic chuck and the lower hydraulic chuck need to be completely disassembled and the calibration tool needs to be replaced, so that the material testing machine is extremely inconvenient; the bar clamping wedge block is replaced, though the bar clamping wedge block is simple and convenient, the tooth lines are carved in the wedge block, the notch teeth can be abraded after long-term use, the tensile and fatigue test of later-stage materials is influenced, the bar clamping wedge block is used, the maximum clamping diameter is 30mm, the contact surface is small and unstable, and certain influence can be generated on a calibration result. And the hydraulic pressure single cylinder does not have fixed frame, need be equipped with independent oil source, need build the rack before using at every turn, and the operation is comparatively loaded down with trivial details, consuming time, and is not convenient for remove. Before using the hydraulic pressure single cylinder to mark the car member, because the pneumatic cylinder does not have fixed frame, be convenient for mark and better use iron floor, need confirm the position and the mode of placing of pneumatic cylinder. Two kinds of modes have been placed to the pneumatic cylinder: laterally and longitudinally. When the pneumatic cylinder is horizontal, only need with the pneumatic cylinder horizontal be connected with the square chest, rethread square chest and iron floor fixed can. If the whole position needs to be adjusted again, because the cylinder body is heavy, one end needs to be hoisted by using a crown block, so that the adjustment can be carried out, and in addition, in order to ensure the coaxiality, a guide rail needs to be additionally arranged according to the structural form of the hydraulic cylinder. And adopt the pneumatic cylinder to indulge and put the mode, need make the portal frame, because the actuator is great, and will guarantee whole test space, the portal frame size will be enough big ability, links to each other actuator and portal frame, and the portal frame is fixed with the iron floor again. The actuator position is adjusted this moment, and the accessible is adjusted motor and is adjusted, and is comparatively convenient.

Therefore, the automobile rod piece is calibrated by the material testing machine or the hydraulic single cylinder, independent oil sources are required to be equipped, the occupied area is large, the automobile rod piece is inconvenient to move, matched clamping tools are not needed, a tool switching port needs to be additionally machined, and the whole operation flow is complex. The whole adopts the two modes, and the operation is inconvenient.

In addition, based on the existing equipment in the laboratory, the calibration requirement cannot be met.

The utility model integrates the above consideration with the existing equipment condition of the laboratory, and in order to facilitate the calibration of the automobile rod piece, the calibration of the automobile rod piece is completed in a shorter time and at a lower cost on the premise of ensuring the accurate calibration data, thereby providing a simple automobile two-force rod piece calibration device.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: in order to solve the problems, the utility model provides the calibration device for the two force rods of the automobile, which is easy to disassemble and assemble, convenient to move and capable of calibrating most of the rods on the automobile chassis.

The technical scheme adopted for solving the technical problems is as follows: a calibration device for two force rods of an automobile comprises a bottom plate, a first supporting column, a second supporting column, a movable cross beam, a load sensor, a clamping assembly and a loading assembly, wherein the first supporting column and the second supporting column are respectively arranged on two opposite sides of the bottom plate; the loading assembly is arranged on the movable cross beam, the clamping assembly is positioned right below the loading assembly, the clamping assembly is fixedly connected to the upper end of the load sensor, and the lower end of the load sensor is fixed on the bottom plate; during calibration, the upper end of the rod piece is connected with the loading assembly, and the lower end of the rod piece is connected with the clamping assembly.

Further, in order to realize that the loading assembly applies force to the rod piece, the loading assembly comprises a horizontal jack and a loading tool, the loading tool comprises an upper plate, a lower plate and at least two guide posts, the guide posts vertically penetrate through the movable cross beam and are in sliding connection with the movable cross beam, the upper plate is connected to the guide posts at the upper end of the movable cross beam, the lower plate is connected to the guide posts at the lower end of the movable cross beam, the horizontal jack is arranged at the lower part of the upper plate, and the guide posts are uniformly distributed on the periphery of the horizontal jack.

The number of the guide columns can be set according to the requirement of stability and the area size of the movable cross beam, and preferably, the two guide columns are symmetrically arranged on two sides of the horizontal jack along the radial direction, so that the force applied to the upper plate by the horizontal jack can be transmitted to the lower plate through the guide columns in a balanced manner.

When the position of the movable cross beam is fixed or adjusted to the highest point of the supporting column, in order to further adjust the whole space to meet the requirements of the rods with different lengths, the connecting position of the upper plate and the guide column is adjustable up and down, and fine adjustment of the space can be achieved by adjusting the position of the upper plate.

In order to realize the connection of the loading assembly and the rod piece, the pulling force is loaded on the rod piece, a connecting through hole for fixing the rod piece is formed in the lower plate, when the rod piece is fixed, one end, provided with threads, of the rod piece penetrates through the connecting through hole, the end part of the rod piece is sleeved with a gasket, and the rod piece is locked through a fourth nut.

After the whole installation space is determined, the upper end of the rod piece to be calibrated is connected and fastened with the lower plate of the loading assembly, then the horizontal jack is placed above the movable cross beam, nuts on the left and right guide posts of the loading assembly are screwed, clamping force is generated between the loading assembly and the movable cross beam, and therefore the horizontal jack is in a clasping state.

Further, in order to realize that the rigidity of bush position presss from both sides tightly, the centre gripping subassembly includes that U type frame, first clamp post, second press from both sides tight post and locking shaft, first clamp post and second press from both sides tight relative setting of post on the lateral wall of U type frame, just first clamp post and the second press from both sides the relative one end of tight post and be the toper, first clamp post and second press from both sides and are equipped with the axial through-hole in the tight post, just the locking shaft can wear to establish in the through-hole, and the both ends of locking shaft extend first clamp post and second respectively and press from both sides tight post, and the tip is equipped with the screw thread, can make first clamp post and second press from both sides tight post axial locking through first nut.

When clamping, firstly, the conical parts of the first clamping column and the second clamping column are inserted into the shaft holes of the rod piece bushing, then the locking shaft is inserted into the through holes of the first clamping column and the second clamping column from one side and penetrates through the shaft holes of the lower bushing of the rod piece, then the two ends of the locking shaft are respectively screwed by adopting first nuts, so that the first clamping column and the second clamping column axially push against the bushing inwards, and finally the first clamping column and the second clamping column are locked on the U-shaped frame, thereby achieving stable rigid connection and ensuring the accuracy of the test.

Specifically, the two side walls of the U-shaped frame are respectively provided with a first fixing hole and a second fixing hole, a first opening communicated with the first fixing hole is formed in the U-shaped frame above the first fixing hole, the first opening extends along the first fixing hole, a second opening communicated with the second fixing hole is formed in the U-shaped frame above the second fixing hole, the second opening extends along the second fixing hole, and the U-shaped frame on the two sides of the first opening and the second opening is provided with screw holes which can be locked through second screws.

Furthermore, in order to fix the clamping assembly, a connecting hole is formed in the bottom of the U-shaped frame, a first screw is arranged in the connecting hole, and the U-shaped frame is fixedly connected to the load sensor through the first screw.

In order to improve the stability of the load sensor, sensor mounting hole positions are arranged on the base plate and the loading assembly, the load sensor is placed on a sensor mounting hole position below the base plate or the lower plate of the loading assembly, a bolt hole of the sensor mounting hole position is matched with a through hole in the load sensor, and the load sensor is fixed on the bolt hole of the sensor mounting hole position through a bolt.

The sensor mounting hole positions are formed in the loading assembly and the base plate, the mounting positions of the loading sensors can be adjusted according to conditions, the loading sensors can be placed on the base plate or the loading assembly, the bolt mounting holes of the M12 are formed in the loading sensors, the overall mounting surface is small, the sensors can be mounted at the upper end of the loading assembly for increasing the overall contact surface, and the overall mounting stability can be improved. Considering that some of the bars are large in size, the cross beam needs to be moved to a high position, and in order to reduce the overall weight, the load sensor can be mounted on the base plate. Preferably, the load sensor is mounted on the base plate.

Further, in order to realize firm connection and fixation with the ground, the steel floor is further included, at least two parallel T-shaped grooves are formed in the steel floor, each T-shaped groove is internally provided with at least one T-shaped sliding block, each T-shaped sliding block can slide along the corresponding T-shaped groove, and the bottom plate is fixedly connected to the upper end of the corresponding T-shaped sliding block through a third screw.

The utility model has the beneficial effects that: the utility model provides a calibration device for two force rods of an automobile, which is provided with a movable cross beam and can adjust the installation space according to the size of the rod. When the movable cross beam is fixed in position, the whole space is adjusted, the upper plate of the loading assembly can be subjected to fine adjustment, the clamping assembly can be suitable for a rod piece with a lining in the structure, and the universality is high. The device has the advantages of simple structure, small occupied space, easy disassembly and assembly, convenient movement and flexible application to the calibration of rod pieces with various structures, thereby increasing the overall working efficiency.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is a schematic structural view of a rod member.

FIG. 2 is a schematic perspective view of the two-force rod calibration device of the present invention.

FIG. 3 is a schematic front view of the two-force rod calibration device of the present invention.

Fig. 4 is an enlarged schematic view of the clamping assembly of fig. 3.

Fig. 5 is a schematic cross-sectional view of the clamping assembly.

Fig. 6 is a schematic structural view of the U-shaped frame.

Fig. 7 is an enlarged schematic structural view of the loading assembly in fig. 3.

In the figure: 1-iron floor, 1.1-T-shaped groove, 1.2-T-shaped slide block, 1.3-fixing hole, 2-bottom plate, 3-first supporting column, 4-second supporting column, 5-movable beam, 6-load sensor, 7-clamping component, 7.1-U-shaped frame, 7.11-first fixing hole, 7.12-second fixing hole, 7.13-first opening, 7.14-second opening, 7.15-screw hole, 7.16-connecting hole, 7.2-first clamping column, 7.3-second clamping column, 7.4-first screw, 7.5-second screw, 7.6-locking shaft, 7.7-first nut, 8-loading component, 8.1-horizontal jack, 8.2-upper plate, 8.3-lower plate, 8.4-guiding column, 8.5-gasket, 8.6-fourth nut, 9-rod piece, 9.1-piston rod, 9.2-piston cylinder, 9.3-lower bushing, 9.4-shaft hole, 9.5-strain gauge, 10-third screw, 11-second nut, 12-third nut.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

The rod parts 9 are basically the same in structure and are provided with a middle rod part, one end of the rod part is provided with threads, the other end of the rod part is provided with a lining, a shaft hole 9.4 is formed in the lining, and a strain gauge 9.5 is attached to the rod part. As shown in fig. 1, the calibration device is illustrated by taking a rod 9 such as a shock absorber as an example in the present embodiment, the shock absorber includes a piston rod 9.1, a piston cylinder 9.2 and a lower bushing 9.3 which are connected in sequence, an end of the piston rod 9.1 is provided with a thread, a strain gauge 9.5 is fixed on a side wall of the piston cylinder 9.2, and a shaft hole 9.4 is formed in the middle of the lower bushing 9.3. The present embodiment provides a specific structure of the calibration device for the structure of the rod 9, and the rod 9 of the calibration device of the present invention includes, but is not limited to, the above-mentioned vibration damper.

As shown in fig. 2 and 3, the calibration device for the two force rods of the automobile comprises an iron floor 1, a bottom plate 2, a first support column 3, a second support column 4, a movable cross beam 5, a load sensor 6, a clamping assembly 7 and a loading assembly 8, wherein at least two parallel T-shaped grooves 1.1 are formed in the iron floor 1, at least one T-shaped sliding block 1.2 is arranged in each T-shaped groove 1.1, the T-shaped sliding block 1.2 can slide along the T-shaped groove 1.1, the bottom plate 2 is fixedly connected to the upper end of the T-shaped sliding block 1.2 through a third screw 10, and a plurality of fixing holes 1.3 are further formed in the iron floor 1 for fixing the iron floor to the ground. The first supporting column 3 and the second supporting column 4 are respectively arranged on two opposite sides of the bottom plate 2, the movable cross beam 5 is transversely connected between the first supporting column 3 and the second supporting column 4, the positions of the movable cross beam 5 on the first supporting column 3 and the second supporting column 4 can be adjusted up and down, and the joint of the movable cross beam 5 and the first supporting column 3 and the second supporting column 4 is locked through a second nut 11; the loading assembly 8 is arranged on the movable cross beam 5, the clamping assembly 7 is located under the loading assembly 8, the clamping assembly 7 is fixedly connected to the upper end of the load sensor 6, and the lower end of the load sensor 6 is fixed on the bottom plate 2. In this embodiment, the load sensor 6 is connected to a sensor mounting hole of the base plate 2, a bolt hole is formed in the sensor mounting hole and matched with a through hole in the load sensor 6, and the load sensor 6 is fixed to the sensor mounting hole by a bolt. In order to ensure the coaxiality, a guide hole is arranged on the movable cross beam 5 and can play a role of a guide rail, so that the coaxiality is ensured.

As shown in fig. 4-6, the clamping assembly 7 includes a U-shaped frame 7.1, a first clamping column 7.2, a second clamping column 7.3, and a locking shaft 7.6, wherein the first clamping column 7.2 and the second clamping column 7.3 are disposed on a side wall of the U-shaped frame 7.1, both ends of the first clamping column 7.2 and the second clamping column 7.3 opposite to each other are tapered, axial through holes are disposed in the first clamping column 7.2 and the second clamping column 7.3, the locking shaft 7.6 can be inserted into the through holes, two ends of the locking shaft 7.6 respectively extend out of the first clamping column 7.2 and the second clamping column 7.3, and the end portions are provided with threads, so that the first clamping column 7.2 and the second clamping column 7.3 can be axially locked by the first nut 7.7. Two side walls of the U-shaped frame 7.1 are respectively provided with a first fixing hole 7.11 and a second fixing hole 7.12, the U-shaped frame 7.1 above the first fixing hole 7.11 is provided with a first notch 7.13 communicated with the first fixing hole 7.11, the first notch 7.13 extends along the first fixing hole 7.11, the U-shaped frame 7.1 above the second fixing hole 7.12 is provided with a second notch 7.14 communicated with the second fixing hole 7.12, the second notch 7.14 extends along the second fixing hole 7.12, and the U-shaped frame 7.1 on two sides of the first notch 7.13 and the second notch 7.14 is provided with screw holes 7.15 which can be locked by a second screw 7.5. The bottom of the U-shaped frame 7.1 is provided with a connecting hole 7.16, a first screw 7.4 is arranged in the connecting hole 7.16, and the U-shaped frame 7.1 is fixedly connected to the load sensor 6 through the first screw 7.4.

As shown in fig. 7, the loading assembly 8 includes a horizontal jack 8.1 and a loading tool, the loading tool includes an upper plate 8.2, a lower plate 8.3 and at least two guide posts 8.4, a guide hole matched with the guide post 8.4 is formed in the movable cross beam 5, the guide post 8.4 penetrates through the guide hole in the movable cross beam 5 and is slidably connected with the movable cross beam 5, the upper plate 8.2 is connected to the guide post 8.4 at the upper end of the movable cross beam 5, and the end portion of the upper plate is locked by a third nut 12, the lower plate 8.3 is connected to the guide post 8.4 at the lower end of the movable cross beam 5, and the end portion of the lower plate is locked by the third nut 12, the horizontal jack 8.1 is arranged at the lower portion of the upper plate 8.2, and the guide posts 8.4 are distributed on the periphery of the horizontal jack 8.1. In the embodiment, two guide columns 8.4 are symmetrically arranged on two sides of the horizontal jack 8.1 along the radial direction. The connecting position of the upper plate 8.2 and the guide column 8.4 can be adjusted up and down. Be equipped with the connect the via hole who is used for fixed member 9 on hypoplastron 8.3, when fixed, member 9 establishes screwed one end and passes connect the via hole, and gasket 8.5 is established to the tip cover, and locks through fourth nut 8.6.

The working principle is as follows:

during testing, the horizontal jack 8.1 jacks the upper plate 8.2 upwards, a preset load is applied, the load drives the lower plate 8.3 to move upwards through the guide column 8.4, so that axial tension is generated on the rod piece 9, the strain gauge 9.5 on the rod piece 9 outputs a strain value at the moment, the load sensor 6 can measure the size of the load applied by the horizontal jack 8.1 in real time, the strain signal output by the strain gauge on the rod piece 9 and the load signal loaded by the horizontal jack 8.1 output by the load sensor 6 are collected by the eDAQ data collection unit, the loaded force value and the strain information can be displayed in real time in a computer, and a calibrating person can determine whether the data is abnormal and the size of the load according to the real-time collected data. And then, calculating a calibration coefficient according to the collected load strain signal. The eDAQ data acquisition unit is a data acquisition device of the purchased hoptogram (suzhou) electronic measurement technology limited company.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a two power member calibration device of car which characterized in that: the movable beam is transversely connected between the first supporting column and the second supporting column, and the position of the movable beam on the first supporting column and the position of the movable beam on the second supporting column are adjustable up and down; the loading assembly is arranged on the movable cross beam, the clamping assembly is positioned right below the loading assembly, the clamping assembly is fixedly connected to the upper end of the load sensor, and the lower end of the load sensor is fixed on the bottom plate; during calibration, the upper end of the rod piece is connected with the loading assembly, and the lower end of the rod piece is connected with the clamping assembly.

2. The automotive two-force bar calibration device as set forth in claim 1, wherein: the loading assembly comprises a horizontal jack and a loading tool, the loading tool comprises an upper plate, a lower plate and at least two guide posts, the guide posts vertically penetrate through the movable cross beam and are connected with the movable cross beam in a sliding mode, the upper plate is connected to the guide posts at the upper end of the movable cross beam, the lower plate is connected to the guide posts at the lower end of the movable cross beam, the horizontal jack is arranged at the lower portion of the upper plate, and the guide posts are evenly distributed on the periphery of the horizontal jack.

3. The automotive two-force bar calibration device as set forth in claim 2, wherein: the two guide columns are symmetrically arranged on two sides of the horizontal jack along the radial direction.

4. The automotive two-force bar calibration device as set forth in claim 2, wherein: the connecting position of the upper plate and the guide post is adjustable up and down.

5. The automotive two-force bar calibration device as set forth in claim 2, wherein: be equipped with the connect the via hole who is used for fixed member on the hypoplastron, when fixed, the member is equipped with screwed one end and passes connect the via hole, and the gasket is established to the tip cover, and locks through the fourth nut.

6. The automotive two-force bar calibration device as set forth in claim 1, wherein: the centre gripping subassembly includes U type frame, first clamp post, the tight post of second clamp and locking shaft, first clamp post and the tight relative setting of second clamp post are on the lateral wall of U type frame, just first clamp post and the tight relative one end of the tight post of second clamp are the toper, be equipped with axial through-hole in the tight post of first clamp post and the tight post of second clamp, just the locking shaft can wear to establish in the through-hole, and the both ends of locking shaft extend first clamp post and the tight post of second clamp respectively, and the tip is equipped with the screw thread, can make first clamp post and the tight axial locking of the tight post of second clamp through first nut.

7. The automotive two-force bar calibration device according to claim 6, wherein: the clamping device is characterized in that a first fixing hole used for fixing a first clamping column and a second fixing hole used for fixing a second clamping column are respectively formed in two side walls of the U-shaped frame, a first opening communicated with the first fixing hole is formed in the U-shaped frame above the first fixing hole, the first opening extends along the first fixing hole, a second opening communicated with the second fixing hole is formed in the U-shaped frame above the second fixing hole, the second opening extends along the second fixing hole, and the U-shaped frames on two sides of the first opening and two sides of the second opening can be locked through second screws.

8. The automotive two-force bar calibration device according to claim 6, wherein: the bottom of U type frame is equipped with the connecting hole, be equipped with first screw in the connecting hole, through first screw with U type frame fixed connection on load sensor.

9. The automotive two-force bar calibration device as set forth in claim 1, wherein: the bottom plate is provided with a sensor mounting hole position, the load sensor is placed on the sensor mounting hole position of the bottom plate, a bolt hole of the sensor mounting hole position is matched with a through hole in the load sensor, and the load sensor is fixed on the sensor mounting hole position through a bolt.

10. The automotive two-force bar calibration device as set forth in claim 1, wherein: still include the iron floor, be equipped with two at least parallel T-arrangement grooves on the iron floor, every the T-arrangement inslot is equipped with at least one T shape slider, T shape slider can follow the T-arrangement inslot and slide, just the bottom plate passes through third screw fixed connection in the upper end of T shape slider.

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