CN213516820U

CN213516820U - Anchor clamps are used in flexible glue adhesion strength survey

Info

Publication number: CN213516820U
Application number: CN202022243176.3U
Authority: CN
Inventors: 吴昉赟; 周澄; 赵卫东; 张维; 胡明磊; 边春华
Original assignee: CNNC Nuclear Power Operation Management Co Ltd; Qinshan Nuclear Power Co Ltd
Current assignee: CNNC Nuclear Power Operation Management Co Ltd; Qinshan Nuclear Power Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-22
Anticipated expiration: 2030-10-10

Abstract

The utility model belongs to the technical field of special fixture, concretely relates to anchor clamps are used in flexible glue adhesion strength survey. The utility model aims to provide a clamp for measuring the bonding strength of soft rubber, aiming at the problem that the free end clamp lacking the rubber strip is detected on site by the bonding strength of the soft rubber, which comprises a left clamp plate, a connecting pin, a fastening bolt and a right clamp plate; the top of the left clamping plate is combined with the top of the right clamping plate through a connecting pin, and a fastening bolt penetrates through middle holes of the left clamping plate and the right clamping plate and is fastened. The beneficial effects of the utility model reside in that: the clamp is specially designed for measuring the bonding strength, and the specialty is greatly improved. Two clamping plates of the clamp can be quickly and conveniently tightened through the fastening bolt with the lever; the toothed plate on the clamping plate can tightly engage the rubber strip when being clamped, so that the rubber strip is prevented from sliding and loosening in the stripping process; the clamping plate meshing mode enables the stress of the rubber strips to be more uniform, so that the condition of breakage caused by uneven stress is reduced.

Description

Anchor clamps are used in flexible glue adhesion strength survey

Technical Field

The utility model belongs to the technical field of special fixture, concretely relates to anchor clamps are used in flexible glue adhesion strength survey.

Background

The lining rubber is a technology which is widely applied for a long time and can improve the performance of various surfaces of materials. For example, after the metal pipeline, the container and the like are lined with proper rubber, the corrosion resistance, the wear resistance and other aspects of the performance are obviously improved. The rubber and the metal are bonded through the adhesive, and the bonding strength between the rubber and the metal is an important judgment basis for the quality of the rubber lining process. The soft glue adhesion strength is determined by a 90-degree stripping method. Rubber with a predetermined width was adhered to a hard plate, and then peeled off at a peel angle of 90 °. The force required for peeling is measured, and the maximum peeling force which can be borne by the test piece is the 90-degree peeling bonding strength of the rubber and the hard plate. Generally, in a laboratory, a tensile testing machine is adopted to measure the adhesive strength of the soft rubber, and the laboratory cannot measure the adhesive strength of the soft rubber, particularly, a tension meter is used for measuring the construction quality of some field construction. At present, in the field detection process, due to the fact that no proper clamp is available, the free end of the rubber strip is connected with the tension meter in an iron wire binding mode. The connection mode is original and crude, and phenomena of uneven stress, rubber fracture, binding and loosening and the like easily occur in the stripping process, so that the test process is repeated and long, and even the accuracy of the test result is influenced. Therefore, it is necessary to provide a clamp for measuring the adhesive strength of soft rubber, which can firmly and reliably clamp the free end of the rubber in the field detection process, so that the rubber cannot slip and loosen in the rubber peeling process, and the test process can be rapidly completed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flexible glue adhesion strength anchor clamps for survey to the problem that flexible glue adhesion strength witnessed inspections lacks the free end anchor clamps of rubber strip.

The technical scheme of the utility model as follows:

a clamp for measuring the bonding strength of soft rubber comprises a left clamp plate, a connecting pin, a fastening bolt and a right clamp plate; the top of the left clamping plate is combined with the top of the right clamping plate through a connecting pin, and a fastening bolt penetrates through middle holes of the left clamping plate and the right clamping plate and is fastened.

Further, left splint contain roof and curb plate, and the roof is provided with the through hole for the installation connecting pin, is provided with the fastening bolt hole in the middle of the curb plate, and the inner wall of curb plate lower part is provided with left pinion rack.

Furthermore, a lifting lug used for connecting a tension meter is arranged on the top plate.

Further, the ratio of the length L and the width H of the left toothed plate is 5: 3.

Further, the length L of the left toothed plate is 15-25mm, and the height H of the left toothed plate is 10-15 mm.

Further, the fastening bolt comprises a bolt rod and a lever arranged at the head of the bolt rod, the head of the bolt rod is provided with a through hole, and the lever penetrates through the through hole and can freely slide.

Furthermore, a bulge matched with the top plate of the left clamping plate in shape is arranged at the top of the right clamping plate, and a through hole is formed in the bulge and used for installing a connecting pin; a through hole is formed in the middle of the right clamping plate, and a nut is arranged outside the through hole and can be matched with the fastening bolt; the inner wall of right splint lower part is provided with right pinion rack, cooperatees with the left pinion rack of left splint, can bite and press from both sides the rubber strip that tightly awaits measuring.

Further, the left toothed plate and the right toothed plate are consistent in shape and size and matched in position.

Further, the through hole between the fastening bolt hole of the left clamping plate and the right clamping plate is a smooth hole or a bolt hole.

Further, the left clamping plate, the connecting pin, the fastening bolt and the right clamping plate are all made of 304 austenitic stainless steel.

The beneficial effects of the utility model reside in that:

the utility model discloses an anchor clamps are used in flexible glue adhesion strength survey is designed for survey adhesion strength specially, compares in the mode of traditional iron wire ligature, and the specialty improves greatly. Through the fastening bolt with the lever, the two clamping plates of the clamp can be quickly and conveniently tightened. And the pinion rack that sets up on the splint can be tightly the interlock live rubber strip when pressing from both sides tightly to avoid peeling off the in-process rubber strip and take place to slide the pine and take off. And the clamping plate is meshed, so that the stress of the rubber strip is more uniform, and the condition of breakage caused by uneven stress is reduced.

Drawings

FIG. 1 is an exploded view of the overall structure of the present invention;

fig. 2 is a schematic three-dimensional structure of the present invention;

fig. 3 is a front view of the present invention;

FIG. 4 is a schematic view of the three-dimensional structure of FIG. 2 rotated 180;

FIG. 5 is a schematic view of the left splint of FIG. 1;

FIG. 6 is a schematic view showing the shape of the fastening bolt of FIG. 1;

FIG. 7 is a schematic view of the shape of the right splint of FIG. 1;

fig. 8 is a schematic view of the usage of the present invention.

In the figure:

1-left splint; 11-a lifting lug; 12-bolt hole fastening; 13-left toothed plate;

2-connecting pins;

3-fastening bolts; 31-a lever; 32-bolt shank;

4-right splint; 41-a nut; 42-right toothed plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiment provides a clamp for measuring the bonding strength of soft rubber, which has a structure shown in figure 1, and mainly comprises a left clamp plate 1, a connecting pin 2, a fastening bolt 3 and a right clamp plate 4; the left clamping plate 1 is combined with the right clamping plate 4 through the connecting pin 2, and the fastening bolt 3 passes through a hole in the middle of the left clamping plate 1 and is screwed on the bolt of the right clamping plate 4, and the assembly of the parts is completed as shown in fig. 2, 3 and 4. All of the above components were made of 304 austenitic stainless steel.

As shown in fig. 5, the left clamping plate 1 is integrally in an inverted L shape and comprises a top plate and a side plate which are integrally formed; the top plate is concave, and a through hole is formed in the outer edge of the top plate and used for mounting the connecting pin 2; a lifting lug 11 is arranged on the top plate and used for connecting a tension meter; a fastening bolt hole 12 is arranged in the middle of the side plate and can be a unthreaded hole or a threaded hole; the inner wall of curb plate lower part is provided with left pinion rack 13, and the length L of left pinion rack 13 is preferably 15-25mm, and height H is preferably 10-15mm, L: h is preferably 5: 3.

As shown in fig. 6, the fastening bolt 3 is installed in the fastening bolt hole 12 of the left splint 1, and is composed of a bolt rod 32 and a lever 31 installed at the head of the bolt rod 32 and capable of sliding, the head of the bolt rod 32 is provided with a through hole, the lever 31 can freely slide through the through hole, so that the bolt 3 can be flexibly and conveniently screwed by using the lever principle, and whether the clamping force meets the test requirement can be judged by rotating the rotation angle of the lever 31; the two ends of the lever 31 are provided with ball-shaped handles, which is convenient for holding operation and can prevent the lever 31 from falling off from the through hole of the bolt rod 32.

As shown in fig. 7, a protrusion matched with the top plate of the left clamping plate 1 in shape is arranged at the top of the right clamping plate 4, and a through hole is formed in the protrusion for installing the connecting pin 2; a through hole with the diameter larger than that of the fastening bolt 3 is arranged in the middle of the right clamping plate 4 and corresponds to the fastening bolt hole 12 of the left clamping plate 1, and a nut 41 is welded outside the through hole and can be matched with the fastening bolt 3; the inner wall of right splint 4 lower part is provided with right pinion rack 42, just in time can cooperate with left pinion rack 13 of left splint 1 to can nip and press from both sides the rubber strip that tightly awaits measuring. The length L and the height H of the right toothed plate 42 are the same as those of the left toothed plate 13, and the positions are matched.

The embodiment also provides a method for using the clamp for measuring the adhesive strength, as shown in fig. 8, which specifically comprises the following steps:

firstly, selecting the position of the rubber slab rubber needed to measure the adhesive strength, dividing a test area on the slab rubber by a blade, measuring the length D and the width D of the test area, wherein the length D of the test area is 125mm, the width D of the test area is 25mm, separating the slab rubber from the hard plate substrate by using a blade or other tools at one end of the slab rubber, and controlling the length of the separated part to be 25-30 mm.

Then, the separation part of the rubber plate and the hard plate base body is clamped between the left toothed plate 13 and the right toothed plate 42, after the angle is adjusted, the fastening bolt 3 is screwed through the rotating lever 31, so that the rubber plate to be detected is tightly clamped, and detection is prepared.

When the detection is started, the tension meter is firstly used for hooking the lifting lug 11, the tension meter is dragged to enable the rubber plate to be detected to be vertical to the substrate surface of the hard plate, and the tension meter is kept in a natural stress state; then, applying an acting force on the tension meter to peel the rubber from the hard plate substrate at a constant speed, and reading the index of the tension meter during peeling, wherein the index is the force required by the rubber plate to be measured during peeling.

Finally, the peel force is calculated divided by the rubber width d to obtain the peel adhesion strength.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. The utility model provides a anchor clamps are used in survey of flexible glue adhesive strength which characterized in that: comprises a left splint (1), a connecting pin (2), a fastening bolt (3) and a right splint (4); the top parts of the left clamping plate (1) and the right clamping plate (4) are combined through a connecting pin (2), and a fastening bolt (3) penetrates through middle holes of the left clamping plate (1) and the right clamping plate (4) and is fastened.

2. The jig for measuring the adhesive strength of soft gels according to claim 1, characterized in that: the left clamping plate (1) comprises a top plate and side plates, the top plate is provided with a through hole for installing the connecting pin (2), a fastening bolt hole (12) is formed in the middle of each side plate, and a left toothed plate (13) is arranged on the inner wall of the lower portion of each side plate.

3. The jig for measuring the adhesive strength of soft gels according to claim 2, characterized in that: the top plate is provided with a lifting lug (11) used for connecting a tension meter.

4. The jig for measuring adhesive strength of soft gels according to claim 2 or 3, characterized in that: the ratio of the length L to the width H of the left toothed plate (13) is 5: 3.

5. The jig for measuring adhesive strength of soft gels according to claim 2 or 3, characterized in that: the length L of the left toothed plate (13) is 15-25mm, and the height H is 10-15 mm.

6. The jig for measuring adhesive strength of soft gels according to claim 2 or 3, characterized in that: the fastening bolt (3) comprises a bolt rod (32) and a lever (31) arranged at the head of the bolt rod (32), a through hole is formed in the head of the bolt rod (32), and the lever (31) penetrates through the through hole and can freely slide.

7. The jig for measuring the adhesive strength of soft gels according to claim 6, characterized in that: the top of the right clamping plate (4) is provided with a bulge matched with the top plate of the left clamping plate (1) in shape, and the bulge is provided with a through hole for mounting the connecting pin (2); a through hole is formed in the middle of the right clamping plate (4), and a nut (41) is arranged outside the through hole and can be matched with the fastening bolt (3); the inner wall of right splint (4) lower part is provided with right pinion rack (42), cooperatees with left pinion rack (13) of left splint (1), can bite and press from both sides the rubber strip that tightly awaits measuring.

8. The jig for measuring soft adhesive strength according to claim 7, characterized in that: the left toothed plate (13) and the right toothed plate (42) are consistent in shape and size and are matched in position.

9. The jig for measuring soft adhesive strength according to claim 7, characterized in that: the through hole between the fastening bolt hole (12) of the left clamping plate (1) and the right clamping plate (4) is a unthreaded hole or a bolt hole.

10. The jig for measuring soft adhesive strength according to claim 7, characterized in that: the left clamping plate (1), the connecting pin (2), the fastening bolt (3) and the right clamping plate (4) are all made of 304 austenitic stainless steel.