CN220188204U - NOL ring paster auxiliary fixtures - Google Patents

Abstract

The utility model discloses a NOL ring patch auxiliary tool, which comprises a ring pipe, wherein the ring pipe comprises a ring-shaped pipe body with two open ends, at least one group of symmetrical positioning devices are arranged on the outer side surface of the pipe body, and each positioning device comprises two positioning lines which are symmetrical with respect to the central axis of the pipe body; the pipe body is provided with a plurality of positioning lines, the positioning lines are arranged on the outer side face of the pipe body, the pressing lines are arranged on the outer side face of the pipe body, and the clamping lines are arranged on the outer side face of the pipe body. The utility model ensures the symmetrical and accurate positions of the strain gauges stuck on the NOL ring, improves the sticking quality of the strain gauges and ensures the sticking precision; through this setting, improve the efficiency of pasting the foil gage, make things convenient for inexperienced personnel to operate, reduced the requirement to the stronger hand ability of operating personnel needs.

Description

NOL ring paster auxiliary fixtures

Technical Field

The utility model relates to the technical field of auxiliary tools, in particular to a NOL ring patch auxiliary tool.

Background

The carbon fiber winding composite material has the characteristics of high specific strength, specific modulus, good heat resistance, corrosion resistance and the like, is used for manufacturing pressure vessels, and is widely used in the field of aerospace. These pressure vessels are formed by filament winding, typically in design using a lattice theory analysis that ignores collective stiffness, with the load being borne by the fibers. The NOL ring is a composite material annular test piece formed by winding unidirectional fibers, the performance of the NOL ring is a scale for measuring the wettability and bonding of the interface between the fibers and a resin matrix and the stress transmitting capability of the NOL ring in a stress state, and the NOL ring can provide process parameters for a fiber winding pressure container. Characterization of NOL ring performance is typically performed using GB/T1458.

In the NOL ring tensile test, attaching strain gages to symmetrical locations on the outer surface of the ring is an important procedure. The unreliable adhesion of the strain gauge can seriously affect the strain, thereby affecting the final detection result. However, the strain gauge is pasted mainly by holding the strain gauge by an operator, positioning is performed by a manual positioning method, and the NOL ring test piece is an annular sample and cannot be stably placed on a workbench, so that the pasting efficiency is low, the strain gauge cannot be reliably positioned, and more serious, the strain gauge is inaccurate in position, so that the deviation of a strain test is caused, and the accuracy and the stability of data acquisition are affected.

Disclosure of Invention

The utility model aims to provide an NOL ring patch auxiliary tool, which solves the problems of low efficiency and poor strain gauge pasting precision of NOL ring pasting strain gauges in the prior art.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

NOL ring paster auxiliary fixtures includes:

the circular pipe comprises an annular pipe body with two open ends, wherein the outer side surface of the pipe body is provided with at least one group of symmetrical positioning devices, and the positioning devices comprise two positioning lines which are symmetrical relative to the central axis of the pipe body;

and the pressing strips are arranged on the outer side face of the pipe body along the axial direction of the pipe body, the pressing strips are provided with clamping positions, the pressing strips are parallel to the axial line of the pipe body at the clamping positions, and a clamping space for clamping the NOL ring is formed between the pressing strips and the outer side face of the pipe body.

Further, an adjusting seat mounting surface is arranged on the outer side surface of one end of the pipe body, and a connecting lug is arranged on the inner side surface of the other end of the pipe body;

one end of the pressing strip is rotationally connected with the mounting surface of the adjusting seat through a connecting piece, and the other end of the pressing strip is fixed through a C-shaped clamp rotationally connected with the connecting lug.

Further, the connecting piece comprises an adjusting seat, and the adjusting seat is connected with the adjusting seat mounting surface through a first screw assembly;

the pressing strip is connected with the adjusting seat through a second screw assembly.

Further, the first screw assembly comprises an inner hexagon screw, a silica gel gasket and a hexagon nut, wherein the inner hexagon screw penetrates through the adjusting seat and the adjusting seat mounting surface and is fastened through the hexagon nut;

a silica gel gasket is arranged between the hexagonal nut and the mounting surface of the adjusting seat;

and an adjusting gasket is detachably arranged on the inner hexagon screw between the adjusting seat and the adjusting seat mounting surface.

Further, one end of the C-shaped clamp is connected with the connecting lug, and the other end of the C-shaped clamp is connected with a butterfly screw for fixing the pressing strip.

Further, a soft cushion is arranged on the inner side surface of the pressing strip.

Further, the device also comprises a base, wherein the base is provided with a supporting device, and the supporting device comprises a supporting rod connected with the base and a heightening column sleeved at the bottom end of the supporting rod;

the pipe body is provided with a matching hole which is symmetrical with the central axis of the pipe body and is matched with the supporting rod, and the supporting rod is connected with the matching hole in a plugging manner.

Further, the number of the supporting rods is two, and the two matching holes on the same side of the pipe body are arranged at two ends of the positioning line.

Further, at least one weight-reducing groove is formed in the pipe body, and the occupied area of the weight-reducing groove is not more than 50% of the surface area of the pipe body.

Further, a handle is further arranged on the base.

According to the technical scheme, the utility model has the beneficial effects that:

when the utility model is used, the NOL ring is sleeved on the periphery of the pipe body, the pipe body can ensure the supporting effect on the NOL ring, the NOL ring can be ensured to be fixed on the periphery of the pipe body by adjusting the pressing strip to the clamping position, and the NOL ring is not required to be held in the follow-up manual patch, so that two hands are liberated; positioning lines which are symmetrical with respect to the central axis of the pipe body are arranged on the pipe body, and when the pipe body is pasted, the pipe body is pasted along the two positioning lines respectively, so that the symmetrical and accurate positions of the strain gauges pasted on the NOL ring are ensured, the bonding quality of the strain gauges is improved, and the pasting precision is ensured; through this setting, improve the efficiency of pasting the foil gage, make things convenient for inexperienced personnel to operate, reduced the requirement that operating personnel need stronger hand power.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a left side view of the present utility model;

FIG. 3 is a top view of the present utility model;

FIG. 4 is a cross-sectional view of the junction of the adjustment seat and the pipe body of the present utility model;

FIG. 5 is a schematic view of the construction of the grommet of the present utility model;

FIG. 6 is a schematic view of the structure of the molding according to the present utility model;

fig. 7 is an isometric view of the present utility model.

Wherein: 1. a grommet; 1-1, a pipe body; 1-2, a weight reducing groove; 1-3, connecting lugs; 1-4, positioning lines; 1-5, adjusting a seat mounting surface; 1-6, a matching hole; 2. a base; 3. pressing strips; 4. a C-shaped clamp; 5. a butterfly screw; 6. a lifting column; 7. an adjusting seat; 8. a hexagonal nut; 9. a silica gel pad; 10. a nut; 11. an inner hexagon screw; 12. a flat gasket; 13. a hexagonal socket head cap shoulder screw; 14. a handle; 15. and (5) supporting the rod.

Description of the embodiments

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and do not require that the present utility model must be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. The terms "front", "back", "left", "right", "upper", "lower" as used in the description of the present utility model refer to directions in the drawings, and the terms "inner", "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

The utility model solves the problems of low efficiency and poor position accuracy of manually pasting the strain gauge on the NOL ring at present.

As shown in fig. 1 to 7, a NOL ring patch auxiliary tool comprises a ring pipe 1, wherein the ring pipe 1 comprises a ring-shaped pipe body 1-1 with two open ends, at least one group of symmetrical positioning devices are arranged on the outer side surface of the pipe body 1-1, and each positioning device comprises two positioning lines 1-4 symmetrical with respect to the central axis of the pipe body 1-1; the pipe body clamping device further comprises pressing strips 3 which are the same in number with the positioning lines 1-4, the pressing strips 3 are arranged on the outer side face of the pipe body 1-1 along the axis direction of the pipe body 1-1, the pressing strips 3 are provided with clamping positions, the pressing strips 3 are parallel to the axis of the pipe body 1-1 in the clamping positions, and clamping spaces for clamping NOL rings are formed between the pressing strips 3 and the outer side face of the pipe body 1-1.

When the utility model is used, the NOL ring is sleeved on the periphery of the pipe body, the pipe body can ensure the supporting effect on the NOL ring, the NOL ring can be ensured to be fixed on the periphery of the pipe body by adjusting the pressing strip to the clamping position, and the NOL ring is not required to be held in the follow-up manual patch, so that two hands are liberated; positioning lines which are symmetrical with respect to the central axis of the pipe body are arranged on the pipe body, and when the pipe body is pasted, the two positioning lines are respectively pasted, so that the symmetrical and accurate positions of strain gauges pasted on the NOL ring are ensured, the bonding quality of the strain gauges is improved, and the pasting precision is ensured; through this setting, improve the efficiency of pasting the foil gage, make things convenient for inexperienced personnel to operate, reduced the requirement that operating personnel need stronger hand power.

In the utility model, the annular pipe 1 is used for supporting the annular sample, the annular pipe 1 can be made of steel or carbon fiber composite material, the thickness is 2-5 mm, and the outer diameter of the pipe body 1-1 in the annular pipe is slightly smaller than the inner diameter of the NOL annular sample, so that the NOL annular sample is not subjected to outward extrusion force when being sleeved on the pipe body 1-1.

In the utility model, the pressing strip 3 is also provided with a mounting position which is convenient for mounting the NOL ring, and in the mounting position, the included angle between the pressing strip 3 and the outer side surface of the pipe body 1-1 is larger than 90 degrees, and by placing the pressing strip 3 in the mounting position, the NOL ring can be conveniently sleeved on the pipe body 1-1 and the pressing strip 3 can be conveniently taken off from the pipe body 1-1.

The positioning devices can be one group or two groups, and the two groups of positioning devices are provided with four positioning lines 1-4, and are correspondingly provided with 4 pressing strips 3, and in the drawing of the utility model, the situation of one group of positioning devices is shown.

In some further embodiments, the bead 3 is connected to the C-clip 4 by a connector. Specifically, as shown in fig. 5, an adjusting seat mounting surface 1-5 is arranged on the outer side surface of the rear end of the pipe body 1-1, a connecting lug 1-3 is arranged on the inner side surface of the front end of the pipe body 1-1, one end of the pressing strip 3 is rotationally connected with the adjusting seat mounting surface 1-5 through a connecting piece, the other end of the pressing strip 3 is fixed through a C-shaped clamp 4 rotationally connected with the connecting lug 1-3, and a butterfly screw 5 for fixing the pressing strip 3 is further arranged on the C-shaped clamp 4.

According to the utility model, the connecting piece for connecting the adjusting seat and the C-shaped clamp are respectively positioned at two ends of the pipe body, so that the fixing effect of the adjusting seat on the NOL ring can be ensured, and the NOL is not blocked from being sleeved on the pipe body by the C-shaped clamp and the design form of connection of the inner side surface of the pipe body, so that the NOL ring is convenient to install and take down.

Specifically, the connecting piece comprises an adjusting seat 7, and the adjusting seat 7 is connected with the adjusting seat mounting surface 1-5 through a first screw assembly; the first screw assembly comprises an inner hexagon screw 11, a silica gel gasket 9 and a hexagon nut 8, wherein the inner hexagon screw 11 penetrates through the adjusting seat 7 and the adjusting seat mounting surfaces 1-5 and is fastened through the hexagon nut 8; and a silica gel gasket 9 is arranged between the hexagonal nut 8 and the adjusting seat mounting surface 1-5.

Further, an adjusting washer is detachably arranged on the socket head cap screw 11 between the adjusting seat 7 and the adjusting seat mounting surface 1-5.

By arranging the silica gel gasket between the hexagon nut and the installation surface of the adjusting seat, the arc-shaped surface measured in the pipe body 1-1 can be compensated by the silica gel gasket, so that the connection effect of the hexagon nut is ensured; the distance between the pressing strip and the outer side face of the pipe body can be adjusted by arranging an adjusting gasket between the adjusting seat and the mounting face of the adjusting seat, so that the height size of the clamping space can be adjusted to adapt to the patches of NOL rings with different thicknesses.

The pressing strip 3 is connected with the adjusting seat 7 through a second screw assembly, the second screw assembly comprises a nut 10, a plain washer 12 and an inner hexagonal cylindrical head shaft shoulder screw 13, and the pressing strip 3 is connected with the adjusting seat 7 through the inner hexagonal cylindrical head shaft shoulder screw 13 and the plain washer 12 and the nut 10 and can be used in a rotating mode after being connected.

In some further embodiments, soft silicone is provided under the bead 3 to apply even pressure to the NOL ring test piece when the piece is pressed.

When the novel pipe body is used, the butterfly nut is loosened, and after the C-shaped clamp rotates, the front end is not blocked, and the whole section of the NOL ring sample part is sleeved on the outer surface of the pipe body 1-1. After the pressing strip 3 is connected with the adjusting seat 7, a force is applied to the pressing strip 3 through the butterfly screw 5 on the C-shaped clamp 4, and the force is transferred to the NOL ring sample through the pressing strip 3 and soft silica gel.

In some further embodiments, the auxiliary fixture further comprises a base 2, wherein a supporting device is arranged on the base 2, and the supporting device comprises a lifting column 6 detachably connected with the base 2 and a supporting rod 15 connected to the lifting column 6 and having an outer diameter smaller than that of the lifting column 6. The pipe body 1-1 is provided with the matching holes 1-6 which are symmetrical about the central axis of the pipe body 1-1 and are matched with the supporting rods 15, the supporting rods 15 can be inserted into the matching holes 1-6 of the pipe body 1-1 when the pipe is used, the bottom of the elevating support column 6 can support the pipe body, the number of the supporting rods 15 is at least two, and the support and fixation of the pipe body can be ensured.

The support of the pipe body can be realized by arranging the support rod to connect the matching holes, and the support of the pipe body can be realized by arranging the heightening column at the bottom end of the support rod, so that when the ring pipe 1 is connected with the base, the hanging effect is realized, the base is not contacted, and the patch is convenient; through setting up the cooperation hole of the central axis symmetry about pipe shaft 1-1, the accessible upset ring canal 1 realizes the adjustment of ring canal 1 position, the paster of being convenient for.

In some further embodiments, mating holes 1-6 are provided at both ends of the alignment wires 1-4. Because the bracing piece 15 is connected on base 2, and perpendicular to base 2, when the pipe shaft is installed on bracing piece 15, mating holes 1-6 are located the top surface of pipe shaft, and locating line 1-4 is located the top surface of pipe shaft, and this design is more convenient for the operator to paste the foil gage. After the strain gauge above is stuck, the position of the ring pipe 1 is adjusted, so that the positioning lines 1-4 which are originally positioned right below are uniformly above, and the strain gauge is stuck conveniently.

In some further embodiments, the base 2 is used for placing and carrying the grommet 1, and two symmetrical handles 14 are provided on the base 2, and the handles 14 are connected to the base 2 by welding or bolting. The elevating column 6 at the bottom of the supporting rod 15 is detachably arranged, so that the loop pipe 1 is in a suspended state when the loop pipe is sleeved into the base 2 and does not contact with the bottom of the base 2.

In some further embodiments, the plurality of weight-reducing grooves 1-2 are uniformly distributed on the pipe body 1-1, and the area occupied by the weight-reducing grooves 1-2 is not more than 50% of the surface area of the ring pipe. The inner wall of one side of the pipe body 1-1 is provided with 180-degree symmetrical connecting lugs 1-3, and the connecting lugs 1-3 are connected with the inner wall of the pipe body 1-1 in a welding mode. The outer wall of the other side of the pipe body 1-1 is provided with 180-degree symmetrical adjusting seat mounting surfaces 1-5, and the adjusting seat mounting surfaces are subjected to spot facing treatment. Symmetrical matching holes 1-6 are arranged on the outer walls of the two sides of the pipe body 1-1, and spot facing treatment is carried out around the matching holes 1-6. The circular pipe 1 is sleeved on the supporting rod 15 of the base 2 through the matching holes 1-6, and countersinking treatment is carried out around the matching holes 1-6 to ensure that the circular pipe can be stably placed on the base.

Through the arrangement, the utility model has the following advantages: 1. the structure is light and simple, and the portable and the use are easy. 2. A work table is provided, and a working procedure of sticking strain gauges is carried out by releasing both hands. 3. The efficiency of pasting the strain gauge is improved, the operation of inexperienced personnel is facilitated, and the requirement on stronger manual operation capability of operators is reduced. 4. The strain gauge can be more accurately adhered to the symmetrical surface of the NOL ring sample, and the adhesion quality of the strain gauge is improved. 5. And the accuracy and the reliability of strain test data are improved. 6. Low cost and convenient processing and manufacturing.

The application process of the utility model can be as follows: the two handles of the base 2 are grasped, the base 2 is placed on an operation platform, and the elevating column 6 is sleeved in the supporting rod 15. The C-shaped clamp 4 is connected with the welding connecting lug 1-3 on the inner side of the pipe body 1-1 through a hexagonal socket head cap shoulder screw, a gasket and a nut, after the connection, the C-shaped clamp 4 is rotated to the inner side of a ring pipe, a plurality of NOL ring test pieces are sleeved outside the pipe body 1-1, and the inner diameter of the NOL ring is in contact with the outer diameter of the pipe body 1-1. The pipe body 1-1 is sleeved into the supporting rod 15 through the matching hole 1-6, and the ring pipe 1 is naturally suspended. An appropriate gasket is selected according to the thickness of the NOL ring test piece and is placed between the adjusting seat 7 and the adjusting seat mounting surface 1-5, and the ring pipe 1 is connected with the adjusting seat through the connection of two inner hexagon screws 11, the silica gel gasket 9 and the hexagon nuts 8. The pressing strip 3 is connected with the adjusting seat 7 through an inner hexagonal cylindrical head shoulder screw 13, a gasket 12 and a nut 10. The C-shaped clamp 4 is turned over to the outer side of the pipe body 1-1, and a certain force is applied to the pressing strip 3 through the butterfly screw 5 on the C-shaped clamp 4 to fix the pressing strip. And (3) performing a foil gage pasting process on one side of the NOL ring on the NOL ring sample by taking the positioning line 1-4 as a reference, taking the ring pipe off the supporting rod 15 after pasting, and performing a foil gage pasting process on the other side of the NOL ring sample by taking the positioning line on the other side as a reference after turning over by 180 degrees. After the NOL ring sample strain gauge is stuck, the butterfly screw 5 is loosened, the C-shaped clamp 4 is rotated to the inner side of the pipe body 1-1, the pressing plate is rotated, and the NOL ring sample stuck with the strain gauge is taken out.

The utility model provides an auxiliary fixture for adhering NOL ring strain gauges, which has the advantages of reasonable design, simple structure, easy processing, small volume and convenient use. The workbench can be provided, the working procedure of pasting the strain gauge can be carried out by releasing both hands, the efficiency of pasting the strain gauge can be improved, the operation of inexperienced personnel is facilitated, the requirement on stronger manual capacity of operators is reduced, the strain gauge can be more accurately pasted on the symmetrical surface of the NOL ring sample, the bonding quality of the strain gauge is improved, and the accuracy and the reliability of strain test data can be greatly improved.

It will be appreciated by those skilled in the art that the present utility model can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the utility model or equivalents thereto are intended to be embraced therein.

Claims (10)

1. NOL ring paster auxiliary fixtures, its characterized in that includes:

the circular pipe (1) comprises an annular pipe body (1-1) with two open ends, wherein the outer side surface of the pipe body (1-1) is provided with at least one group of symmetrical positioning devices, and each positioning device comprises two positioning lines (1-4) which are symmetrical relative to the central axis of the pipe body (1-1);

and the number of the pressing strips (3) is the same as that of the positioning lines (1-4), the pressing strips (3) are arranged on the outer side face of the pipe body (1-1) along the axial direction of the pipe body (1-1), the pressing strips (3) are provided with clamping positions, the axial lines of the pressing strips (3) and the pipe body (1-1)) are parallel at the clamping positions, and a clamping space for clamping NOL rings is formed between the pressing strips (3) and the outer side face of the pipe body (1-1).

2. The NOL ring patch auxiliary tool according to claim 1, wherein an adjusting seat mounting surface (1-5) is arranged on the outer side surface of one end of the pipe body (1-1), and a connecting lug (1-3) is arranged on the inner side surface of the other end of the pipe body (1-1);

one end of the pressing strip (3) is rotationally connected with the adjusting seat mounting surface (1-5) through a connecting piece, and the other end of the pressing strip is fixed through a C-shaped clamp (4) rotationally connected with the connecting lug (1-3).

3. The NOL ring patch accessory tool according to claim 2, wherein the connector comprises an adjustment seat (7), the adjustment seat (7) being connected to the adjustment seat mounting surface (1-5) by a first screw assembly;

the pressing strip (3) is connected with the adjusting seat (7) through a second screw assembly.

4. The NOL ring patch accessory tool according to claim 3, wherein the first screw assembly comprises an inner hexagonal screw (11), a silica gel gasket (9) and a hexagonal nut (8), and the inner hexagonal screw (11) penetrates through the adjusting seat (7) and the adjusting seat mounting surfaces (1-5) and is fastened through the hexagonal nut (8);

a silica gel gasket (9) is arranged between the hexagonal nut (8) and the adjusting seat mounting surface (1-5);

an adjusting gasket is detachably arranged on the inner hexagon screw (11) between the adjusting seat (7) and the adjusting seat mounting surface (1-5).

5. The NOL ring patch auxiliary tool according to claim 2, wherein one end of the C-shaped clamp (4) is connected with the connecting lug (1-3), and the other end of the C-shaped clamp is connected with a butterfly screw (5) for fixing the pressing strip (3).

6. The NOL ring patch auxiliary tool according to claim 1, wherein a soft cushion is arranged on the inner side surface of the pressing bar (3).

7. The NOL ring patch auxiliary tool according to claim 1, further comprising a base (2), wherein the base (2) is provided with a supporting device, and the supporting device comprises a supporting rod (15) connected with the base (2) and a heightening column (6) sleeved at the bottom end of the supporting rod (15);

the pipe body (1-1) is provided with a matching hole (1-6) which is symmetrical with the central axis of the pipe body (1-1) and is matched with the supporting rod (15), and the supporting rod (15) is in plug connection with the matching hole (1-6).

8. The NOL ring patch auxiliary tool according to claim 7, wherein two support rods (15) are provided, and two matching holes (1-6) positioned on the same side of the pipe body (1-1) are arranged at two ends of the positioning line (1-4).

9. The NOL ring patch auxiliary tool according to claim 1, wherein the pipe body (1-1) is provided with at least one weight-reducing groove (1-2), and the occupied area of the weight-reducing groove (1-2) is not more than 50% of the surface area of the pipe body (1-1).

10. The NOL ring patch accessory tool as claimed in claim 7, wherein a handle (14) is further provided on the base (2).