CN218599378U

CN218599378U - Auxiliary device for pasting strain gauge on transmission shaft

Info

Publication number: CN218599378U
Application number: CN202222594283.XU
Authority: CN
Inventors: 张作成
Original assignee: Zhuhai Junxing Electromechanical Co ltd
Current assignee: Zhuhai Junxing Electromechanical Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-10
Anticipated expiration: 2032-09-29

Abstract

The utility model relates to an auxiliary device for pasting a transmission shaft with a strain gauge; the positioning mechanism comprises a base plate, a fixing plate and a fixing bolt, wherein a first threaded hole is formed in the base plate, a second threaded hole is formed in the fixing plate, the base plate and the fixing plate are fixedly connected through the fixing bolt, a transmission shaft is installed between the base plate and the fixing plate, a first pin hole is formed in the base plate, a second pin hole is formed in the fixing plate, and adjusting pins are installed in the first pin hole and the second pin hole; fix the transmission shaft between base plate and fixed plate, heat the device and transmission shaft together to solid-state glue and melt, glue solidification after melting such as cooling at room temperature again realizes the firm bonding of foil gage on the transmission shaft, and the bonding precision is high, and no matter how much and few of the viscose volume can control the distance between foil gage and the transmission shaft, realizes that the foil gage measures the precision height of transmission shaft moment of torsion.

Description

Auxiliary device for pasting strain gauge on transmission shaft

Technical Field

The utility model relates to a technical field of foil gage is pasted to the transmission shaft, concretely relates to auxiliary device of foil gage is pasted to transmission shaft.

Background

The transmission shaft of electric motor car can measure the car and move the acceleration of in-process, the transmission shaft moment of torsion under the state such as slide, the mode of survey needs to paste the foil gage on the transmission shaft, utilize foil gage and the moment of torsion of transmission shaft cooperation measurement transmission shaft, but current post the foil gage on the transmission shaft, because the difference of the viscose volume of pasting, glue solid-state glue together with the foil gage on the transmission shaft earlier, reheat melts solid-state glue, glue resolidification such as cooling after melting, can lead to the distance between foil gage and the transmission shaft different, for example the distance between foil gage and the transmission shaft is big under the condition that the distance between foil gage and the transmission shaft is less than the viscose volume under the condition that the viscose volume is many, and then lead to measuring the precision of transmission shaft moment of torsion low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a transmission shaft pastes auxiliary device of foil gage, make it realize that the foil gage can closely laminate on the transmission shaft for the precision of measuring the transmission shaft moment of torsion to the transmission shaft is high.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an auxiliary device of foil gage is pasted to transmission shaft, includes positioning mechanism, positioning mechanism includes base plate, fixed plate and fixing bolt, be equipped with first screw hole on the base plate, correspond on the fixed plate the position of first screw hole is equipped with the second screw hole, fixing bolt passes first screw hole and second screw hole will the base plate with fixed plate fixed connection, the base plate with the fixed transmission shaft of fixed plate cooperation, promptly the transmission shaft is installed the base plate with between the fixed plate, avoid on the base plate the position of first screw hole is equipped with first cotter hole, correspond on the fixed plate the position in first cotter hole is equipped with second cotter hole, first cotter hole with install the adjustment pin on the second cotter hole.

Further, the thickness of the substrate is greater than that of the fixing plate.

Furthermore, the base plate comprises a first arc-shaped plate, mounting plates are connected to two sides of the first arc-shaped plate, and the first threaded hole and the first pin hole are located in the mounting plates; the transmission shaft is installed between the first arc-shaped plate and the fixing plate.

Furthermore, the fixed plate comprises a second arc-shaped plate, connecting plates are connected to two sides of the second arc-shaped plate, the second threaded holes and the second pin holes are located on the connecting plates, and the transmission shaft is installed between the second arc-shaped plate and the base plate.

Further, first screw hole and second screw hole are equipped with two and relative setting respectively, and first cotter hole and second cotter hole are equipped with two and relative setting respectively.

Further, a connecting line between the two first threaded holes and a connecting line between the two first pin holes are parallel to each other; and a connecting line between the two second threaded holes and a connecting line between the two second pin holes are parallel to each other.

Further, the first threaded hole is a first threaded through hole penetrating through the substrate, and the second threaded hole is a second threaded through hole penetrating through the fixing plate; the first pin hole is a pin blind hole on the substrate, and the second pin hole is a pin through hole penetrating through the fixing plate.

Further, the length of the fixing bolt is greater than that of the fixing plate, and the length of the fixing bolt is less than the sum of the lengths of the base plate and the fixing plate.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, after a strain gauge with solid glue is adhered to a transmission shaft, the transmission shaft is placed between a base plate and a fixing plate, then a fixing bolt penetrates through a first threaded hole and a second threaded hole to fix the base plate and the fixing plate, then an adjusting pin penetrates through a first pin hole and a second pin hole, the relative position between the base plate and the fixing plate is adjusted and fixed by the adjusting pin, so that the relative position between the strain gauge and the transmission shaft is fixed, and then the solid glue is melted by heating, the glue after melting such as cooling at room temperature again solidifies, and base plate and fixed plate are fixed with the relative position of transmission shaft and foil gage and realize the firm bonding with the foil gage on the transmission shaft, through base plate and fixed plate with the fixed position of transmission shaft and foil gage, cooperate the distance between fixing bolt and the adjusting pin control foil gage and the transmission shaft again, realize that the distance between foil gage and the transmission shaft does not receive the influence that the viscose volume is how much for the precision that the foil gage measured the transmission shaft moment of torsion is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention;

fig. 2 is another perspective view of the present invention;

FIG. 3 is a schematic view of the substrate structure of the present invention;

fig. 4 is a schematic structural view of a fixing plate of the present invention;

the names of the components identified in the figures are as follows:

1. a drive shaft; 2. a first arc-shaped plate; 3. mounting a plate; 4. fixing the bolt; 5. a first threaded hole; 6. a second threaded hole; 7. a first pin hole; 8. a second pin hole; 9. a second arc-shaped plate; 10. a connecting plate; 11. and adjusting the pin.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, only some embodiments, not all embodiments, of the present invention are described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b): referring to fig. 1-2, an auxiliary device for attaching a strain gauge to a transmission shaft includes a positioning mechanism, the positioning mechanism includes a substrate, a fixing plate and a fixing bolt 4, the thickness of the substrate is greater than the thickness of the fixing plate, so that the substrate can be placed on a device for heating solid state adhesive to support the substrate, the fixing plate is a part for fixing the transmission shaft 1 by matching with the substrate, and the bonding position of the transmission shaft 1 and the strain gauge is attached to the fixing plate, so that the thickness of the fixing plate needs to be thinner than that of the substrate, and the solid state adhesive is easily melted by heating. Be equipped with first screw hole 5 on the base plate, the position that corresponds first screw hole 5 on the fixed plate is equipped with second screw hole 6, fixing bolt 4 passes first screw hole 5 and second screw hole 6 with base plate and fixed plate fixed connection, transmission shaft 1 is installed between base plate and fixed plate, the position of avoiding first screw hole 5 on the base plate is equipped with first cotter hole 7, the position that corresponds first cotter hole 7 on the fixed plate is equipped with second cotter hole 8, install adjusting pin 11 on first cotter hole 7 and the second cotter hole 8. First screw hole 5 and second screw hole 6 are equipped with two and relative setting respectively for the both ends of base plate and fixed plate are all fixed through fixing bolt 4, strengthen the steadiness of being connected between it and transmission shaft 1. First screw hole 5, there is little clearance between second screw hole 6 and the fixing bolt 4, when utilizing adjusting pin 11 adjustment base plate and the relative position of fixed plate, free direction is done by this little clearance to first screw hole 5, the screw thread friction that appears between second screw hole 6 and the fixing bolt 4, damage to first screw hole 5, second screw hole 6 and fixing bolt 4 is lower, first pin hole 7 and second pin hole 8 are equipped with two and relative setting respectively, make the both ends of base plate and fixed plate all adjustable relative compression distance, also strengthen the steadiness of being connected between its and transmission shaft 1 simultaneously. A connecting line between the two first threaded holes 5 is parallel to a connecting line between the two first pin holes 7; a connecting line between the two second threaded holes 6 is parallel to a connecting line between the two second pin holes 8; therefore, the fixing bolt 4 is firstly used for fixing the fixing plate and one side of the base plate, the adjusting pin 11 is used for adjusting the relative distance between the fixing plate and the base plate, and meanwhile, the stability among the fixing plate, the base plate and the transmission shaft 1 can be further enhanced.

Referring to fig. 3-4, the base plate includes a first arc-shaped plate 2, both sides of the first arc-shaped plate 2 are connected with mounting plates 3, the first arc-shaped plate 2 and the mounting plates 3 are integrally formed, and first threaded holes 5 and first pin holes 7 are located on the mounting plates 3; the fixed plate includes second arc 9, and the both sides of second arc 9 all are connected with connecting plate 10, second arc 9 and connecting plate 10 integrated into one piece, and second screw hole 6 and second cotter hole 8 all are located connecting plate 10, and first arc 2 is opposite with the crooked opposite direction of second arc 9, and transmission shaft 1 is installed between second arc 9 and first arc 2 for the laminating is between base plate and fixed plate when transmission shaft 1 is fixed. When the connecting plate 10 and the mounting plate 3 are placed together, the contact surfaces of the connecting plate 10 and the mounting plate 3 are mutually attached; so can guarantee the stability when base plate and fixed plate fixed transmission shaft 1.

The first threaded hole 5 is a first threaded through hole penetrating through the substrate, and the second threaded hole 6 is a second threaded through hole penetrating through the fixing plate; the first pin hole 7 is a pin blind hole on the substrate, and the second pin hole 8 is a pin through hole penetrating through the fixing plate, so that the fixing plate and the substrate can be fixed by using the fixing bolt 4, and the relative position of the fixing plate and the substrate can be adjusted by using the adjusting pin 11. The length of the fixing bolt 4 is greater than that of the fixing plate, and the length of the fixing bolt 4 is less than the sum of the lengths of the base plate and the fixing plate, so that on one hand, the fixing plate and the base plate can be fixedly connected through the fixing bolt 4, on the other hand, the first threaded hole 5 is provided with a gap after the fixing bolt 4 is screwed in, and two corresponding gaps of the base plate can be fixed on corresponding positions of an external heating device to fix the relative position of the auxiliary device and the heating device.

The base plate and the fixing plate are made of 65Mn steel, so that the strength, hardness and elasticity are high, the transmission shaft 1 can be stably fixed, the solid glue is prevented from being melted in the heating process, the deformation of the transmission shaft 1 can be effectively prevented, the positioning of the transmission shaft 1 is ensured, and the fitting precision of the transmission shaft 1 and the strain gauge is met; the fixing bolt 4 and the adjusting pin 11 are made of GCr15 steel, and have high hardness, wear resistance and long service life.

The working principle of the embodiment is as follows: when the device is used, the device is assembled firstly, namely, the transmission shaft 1 bonded with the strain gauge is placed at the position corresponding to the mounting positions of the substrate and the fixing plate, the position of the strain gauge is close to the position of the adjusting pin 11, then the fixing bolt 4 is screwed into the first threaded hole 5 and the second threaded hole 6, the position of the transmission shaft 1 is adjusted so that the transmission shaft 1 is stably connected with the substrate and the fixing plate, the adjusting pin 11 is mounted in the first pin hole 7 and the second pin hole 8, the superposed thickness of the transmission shaft 1 and the strain gauge is calculated, the exposed position of the adjusting pin 11 is measured by using a ruler, the adjusting pin 11 is knocked by using a tool until the thickness of the strain gauge and the transmission shaft 1 is consistent with the pre-calculated thickness, then the auxiliary device and the transmission shaft 1 are heated together until the solid glue is dissolved, the auxiliary device and the transmission shaft 1 are solidified by cooling the glue at room temperature and the like after the glue is dissolved, the substrate and the fixing plate fix the relative positions of the transmission shaft 1 and the strain gauge and the transmission shaft 1 to realize firm bonding of the strain gauge on the transmission shaft 1, the transmission shaft, the bonding precision is high, and the adjusting precision can be adjusted, no matter the distance between the substrate and the strain gauge can be controlled by the strain gauge and the strain gauge of the strain gauge, no matter how much of the strain gauge 1, and the strain gauge can be solidified, no matter the strain gauge, no matter the distance between the substrate and the strain gauge can be adjusted, and the strain gauge, and the fixed plate can be adjusted, and the fixed plate, and the distance between the strain gauge.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "left," "right," "front," "rear," and the like as used herein are for purposes of illustration only.

Claims

1. The utility model provides an auxiliary device of foil gage is pasted to transmission shaft which characterized in that: including positioning mechanism, positioning mechanism includes base plate, fixed plate and fixing bolt (4), be equipped with first screw hole (5) on the base plate, correspond on the fixed plate the position of first screw hole (5) is equipped with second screw hole (6), fixing bolt (4) are passed first screw hole (5) and second screw hole (6) will the base plate with fixed plate fixed connection, the base plate with fixed plate cooperation fixed transmission axle (1), avoid on the base plate the position of first screw hole (5) is equipped with first cotter hole (7), correspond on the fixed plate the position of first cotter hole (7) is equipped with second cotter hole (8), first cotter hole (7) with install adjustment pin (11) on second cotter hole (8).

2. The auxiliary device for attaching the strain gage to the transmission shaft according to claim 1, wherein: the thickness of the substrate is greater than that of the fixing plate.

3. The auxiliary device for attaching the strain gage to the transmission shaft according to claim 1, wherein: the base plate comprises a first arc-shaped plate (2), mounting plates (3) are connected to two sides of the first arc-shaped plate (2), and the first threaded hole (5) and the first pin hole (7) are located on the mounting plates (3); the transmission shaft (1) is installed between the first arc-shaped plate (2) and the fixing plate.

4. The auxiliary device for attaching the strain gage to the transmission shaft according to claim 1, wherein: the fixed plate comprises a second arc-shaped plate (9), connecting plates (10) are connected to two sides of the second arc-shaped plate (9), second threaded holes (6) and second pin holes (8) are located on the connecting plates (10), and the transmission shaft (1) is installed between the second arc-shaped plate (9) and the base plates.

5. The auxiliary device for attaching the strain gage to the transmission shaft according to claim 1, wherein: the first threaded hole (5) and the second threaded hole (6) are provided with two holes and are arranged oppositely, and the first pin hole (7) and the second pin hole (8) are provided with two holes and are arranged oppositely.

6. The auxiliary device for attaching the strain gage to the transmission shaft according to claim 5, wherein: the connecting line between the two first threaded holes (5) and the connecting line between the two first pin holes (7) are parallel to each other; the connecting line between the two second threaded holes (6) and the connecting line between the two second pin holes (8) are parallel to each other.

7. The auxiliary device for attaching a strain gage to a transmission shaft according to claim 1 or 5, wherein: the first threaded hole (5) is a first threaded through hole penetrating through the substrate, and the second threaded hole (6) is a second threaded through hole penetrating through the fixing plate; the first pin hole (7) is a pin blind hole in the substrate, and the second pin hole (8) is a pin through hole penetrating through the fixing plate.

8. The auxiliary device for attaching a transmission shaft to a strain gage as defined in claim 1 or 5, wherein: the length of the fixing bolt (4) is greater than that of the fixing plate, and the length of the fixing bolt (4) is less than the sum of the lengths of the base plate and the fixing plate.