CN211085922U

CN211085922U - Clamp for tensile test of bolt

Info

Publication number: CN211085922U
Application number: CN201921960833.7U
Authority: CN
Inventors: 邓丽莉
Original assignee: Sichuan Hengxin Highway Engineering Test And Inspection Co ltd
Current assignee: Sichuan Hengxin Highway Engineering Test And Inspection Co ltd
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-07-24
Anticipated expiration: 2029-11-09

Abstract

The utility model relates to a bolt is anchor clamps for tensile test, including last fixing base and lower fixing base, upward be provided with the cope match-plate pattern on the fixing base, be provided with the lower bolster in the fixing base down, upward the holding tank has all been seted up with fixing base down to the fixing base, upward the opening that is used for supplying the bolt that awaits measuring to pass is all offered to fixing base and lower fixing base, opening and holding tank intercommunication, cope match-plate pattern and lower bolster cross section all are greater than the opening cross section, there is the breach that supplies the bolt immigration that awaits measuring with the opening intercommunication, the recess that is used for placing the bolt that awaits measuring is offered to the cope match-plate pattern, the articulated recess open-ended apron that is provided with on the cope match-plate pattern is used for. When the bolt to be tested is installed, the bolt to be tested is firstly fixed with the lower template, then the bolt is directly placed in the groove of the upper template, the bolt to be tested can be fixed by adjusting the fastener, and the bolt to be tested can be conveniently installed by workers.

Description

Clamp for tensile test of bolt

Technical Field

The utility model belongs to the technical field of the bolt detection device technique and specifically relates to a bolt is anchor clamps for tensile test is related to.

Background

The standard screw and the bolt have the advantages of simple structure, high quality, low price and the like, are widely applied to various industries, and need to sample and detect the tensile strength of the screw and the bolt in order to ensure the safety of the screw and the bolt in the using process.

Among the prior art, the patent application with publication number CN204346825U discloses bolt tensile test anchor clamps, including lower fixing base, last fixing base, lower bolster and cope match-plate pattern, be equipped with the screw hole of a plurality of models on the lower bolster, the bottom of cope match-plate pattern is equipped with the recess of a plurality of models, and the cope match-plate pattern is threaded connection with last fixing base, and the lower bolster also is threaded connection with being connected of lower bolster. When the bolt inserting device is used, the upper template is fixed on the upper fixing seat, the lower template is fixed on the lower fixing seat, the bolt head of the bolt to be tested is inserted into the T-shaped groove formed in the upper template and matched with the model of the bolt to be tested, and the threaded end of the bolt to be tested is inserted into the threaded hole, corresponding to the bolt to be tested, in the lower template.

However, the technical scheme has the following technical problems: because be threaded connection between cope match-plate pattern and the last fixing base, when fixing the cope match-plate pattern on last fixing base, need to screw the cope match-plate pattern with the help of the instrument, on the same reason, also be threaded connection between lower bolster and the lower fixing base, when fixing the lower bolster on lower fixing base, need to screw with the help of instrument lower bolster equally, when installing the bolt that awaits measuring, because the bolt has certain length, the bolt need pass the incision on the last fixing base and just can place the bolt head in the T-slot, after the bolt head is put into the T-slot, insert the screw thread section of bolt in the screwed hole again and screw, it is very hard to screw the screw thread section of bolt that awaits measuring this moment again, the whole process of installing the bolt that awaits measuring is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bolt is anchor clamps for tensile test has the advantage of the installation of being convenient for.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a bolt is anchor clamps for tensile test, including last fixing base and lower fixing base, upward be provided with the cope match-plate pattern on the fixing base, be provided with the lower bolster in the fixing base down, go up the fixing base and all seted up the holding tank with lower fixing base, it all sets up the opening that is used for supplying the bolt that awaits measuring to pass with lower fixing base to go up the fixing base, opening and holding tank intercommunication, cope match-plate pattern and lower bolster cross section all are greater than the opening cross section, there is the breach that supplies the bolt immigration that awaits measuring with the opening intercommunication, the recess that is used for placing the bolt that awaits measuring is offered to the cope match-plate pattern, the articulated apron that is provided with on the cope match-plate pattern is used.

Through adopting above-mentioned technical scheme, when the bolt that awaits measuring is installed to needs, insert the screw hole of lower bolster and screw earlier with the screw thread section of the bolt that awaits measuring, the cope match-plate pattern is placed in the holding tank. The recess opening is opened to the regulation apron, adjust the distance between fixing base and the lower fixing base simultaneously, the bolt that will await measuring moves into the opening through the breach, the tip that the bolt that will await measuring is close to the bolt head is arranged in the recess of cope match-plate pattern, the lower bolster is placed in the holding tank this moment, it covers the recess opening to rotate the apron, it is fixed to lap through the mounting, prevent that the apron from rotating when the bolt that awaits measuring is tested, adjusting fastener will await measuring the bolt fastening, then put this anchor clamps and carry out tensile test to the bolt that awaits measuring on drawing the ware, can detect out the tensile strength of the bolt. When the bolt to be tested is installed, the bolt to be tested is firstly fixed with the lower template, then the bolt is directly placed in the groove of the upper template, the bolt to be tested can be fixed by adjusting the fastener, operation steps and operation time are saved, and the bolt to be tested can be conveniently installed by workers. Because cope match-plate pattern and lower bolster cross section all are greater than the opening cross section, when the bolt that awaits measuring is carrying out tensile test, cope match-plate pattern and lower bolster butt can not follow the opening roll-off at the holding tank lateral wall, and the bolt head butt of the bolt that awaits measuring is on the cope match-plate pattern lateral wall. The arrangement of the notch is convenient for directly placing the bolt to be tested in the upper fixing seat and the lower fixing seat, and then fixing is carried out, so that the device is simple and convenient.

The utility model discloses further set up to: the fastener includes that the fastening screw of apron is worn to establish by the screw thread, and the tip that fastening screw is close to the recess is provided with the butt plate, and fastening screw rotates to be connected on the butt plate, and the butt plate sets up the arc into with the bolt surface laminating that awaits measuring.

Through adopting above-mentioned technical scheme, the bolt that awaits measuring is put in the recess, rotates fastening screw and drives the butt plate orientation and remove near the direction of the bolt that awaits measuring, with butt plate and the bolt butt that awaits measuring, and then with the bolt fastening that awaits measuring in the recess, curved butt plate can increase and the area of contact of the bolt that awaits measuring, and then improves the fixed effect to the bolt that awaits measuring. Fastening screw rotates to be connected and prevents that fastening screw from driving the butt plate and rotating when the pivoted on the butt plate, rotates fastening screw and can make the bolt that awaits measuring fix in the recess or break away from simple and convenient with the recess.

The utility model discloses further set up to: the mounting is including setting up the magnet strip on one side of keeping away from apron articulated department at the cope match-plate pattern, and the apron sets up to the iron plate with magnet strip adsorption.

Through adopting above-mentioned technical scheme, the apron passes through the magnet strip and adsorbs to be fixed on the cope match-plate pattern, and when the recess opening was opened to needs, the staff can break away from apron and magnet strip hard, and then breaks away from the cope match-plate pattern with the apron, is convenient for place the bolt that awaits measuring in the recess to the installation of the bolt that awaits measuring is convenient.

The utility model discloses further set up to: the lower bolster outer wall is provided with the joint strip, and the draw-in groove that is used for supplying joint strip immigration is offered to the holding tank lateral wall of lower fixing base.

Through adopting above-mentioned technical scheme, joint strip joint is in the draw-in groove to fix the lower bolster on lower fixing base, avoid driving the lower bolster removal with the bolt that awaits measuring when last fixing base, facilitate for the installation of the bolt that awaits measuring.

The utility model discloses further set up to: the end part of the fixed screw rod, which is far away from the abutting plate, is provided with an adjusting groove.

Through adopting above-mentioned technical scheme, because the staff rotates fastening screw alone harder, the setting of adjustment tank is convenient for the staff and rotates fastening screw with the help of appurtenance, can use manpower sparingly, provides convenience for the installation of the bolt that awaits measuring.

The utility model discloses further set up to: the circumference along fixing base outer wall down is provided with the bellows, and the one end of bellows is connected fixing base outer wall down, and the other end can be dismantled and be connected on last fixing base.

Through adopting above-mentioned technical scheme, because the partial bolt that awaits measuring of spot check has the unqualified condition of quality, the setting of bellows can avoid awaiting measuring the bolt and have the piece spill when breaking to improve the security of this anchor clamps when using. Because the bellows is collapsible flexible, and then can be used to the tensile test of the bolt that awaits measuring of different length, extensive applicability.

The utility model discloses further set up to: the outer wall of the upper fixing seat is provided with a hanging ring, and one end of the corrugated pipe is provided with a hook hung on the hanging ring.

Through adopting above-mentioned technical scheme, when the bolt that awaits measuring is experimental, the bellows passes through the couple articulate on the link, when the bolt that awaits measuring needs to be installed, takes off the couple on the link to take off the bellows from last fixing base.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the bolt to be tested is installed, the bolt to be tested is firstly fixed with the lower template, then the bolt is directly placed in the groove of the upper template, the bolt to be tested can be fixed by adjusting the fastener, operation steps and operation time are saved, and the bolt to be tested can be conveniently installed by workers.

2. Due to the arrangement of the corrugated pipe, the fragments can be prevented from splashing when the bolt to be detected is broken, and the safety of the clamp in use is improved. Because the bellows is collapsible flexible, and then can be used to the tensile test of the bolt that awaits measuring of different length, extensive applicability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the structure of the jig of the present embodiment in use;

fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Reference numerals: 1. an upper fixed seat; 2. a lower fixed seat; 3. mounting a template; 4. a lower template; 5. accommodating grooves; 6. a port; 7. a bolt to be tested; 8. a notch; 9. a groove; 10. a cover plate; 11. a threaded hole; 12. fastening a screw rod; 13. a butt joint plate; 14. a magnet bar; 15. a clamping strip; 16. a card slot; 17. an adjustment groove; 18. a bellows; 19. hanging a ring; 20. and (4) hanging hooks.

Detailed Description

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

The utility model discloses a clamp for tensile test of bolt, which combines with a figure 1 and a figure 2, and comprises an upper fixing seat 1 and a lower fixing seat 2, wherein the upper fixing seat 1 is provided with an upper template 3, the lower fixing seat 2 is internally provided with a lower template 4, the upper fixing seat 1 and the lower fixing seat 2 are both provided with a holding tank 5, the upper fixing seat 1 and the lower fixing seat 2 are both provided with through holes 6 for passing bolts 7 to be tested, the through holes 6 are communicated with the holding tank 5, the cross sections of the upper template 3 and the lower template 4 are both larger than that of the through holes 6, a gap 8 for moving the bolts 7 to be tested is communicated with the through holes 6, the upper template 3 is provided with a groove 9 for placing the bolts 7 to be tested, the upper template 3 is hinged with a cover plate 10 for covering or opening the opening of the groove 9, the cover plate 10 is provided with a fastener for fastening the bolts 7, the lower template 4 is provided with a threaded hole 11.

With reference to fig. 1 and 2, in order to facilitate the adjustment of the cover plate 10 to open the opening of the groove 9 for placing the bolt 7 to be tested in the groove 9, the fixing member includes a magnet bar 14 disposed on one side of the upper mold plate 3 away from the hinge joint of the cover plate 10, and the cover plate 10 is disposed as an iron plate to be adsorbed by the magnet bar 14. When the opening of the groove 9 needs to be opened, the worker can separate the cover plate 10 from the magnet strip 14 by exerting force, so that the cover plate 10 is separated from the upper template 3, the bolt 7 to be tested is placed in the groove 9 conveniently, and the bolt 7 to be tested is convenient to install.

With reference to fig. 1 and 2, in order to facilitate the worker to fix the bolt 7 to be tested in the groove 9, the fastener includes a fastening screw 12 with a thread penetrating through the cover plate 10, the end portion of the fastening screw 12 close to the groove 9 is provided with a butt plate 13, the fastening screw 12 is rotatably connected to the butt plate 13, and the butt plate 13 is arranged in an arc shape attached to the surface of the bolt 7 to be tested. The end part of the fixed screw rod far away from the abutting plate 13 is provided with an adjusting groove 17.

When the bolt 7 to be tested needs to be installed, the threaded section of the bolt 7 to be tested is inserted into the threaded hole 11 of the lower template 4 and screwed, and the upper template 3 is placed in the accommodating groove 5. Adjust apron 10 and open recess 9 opening, adjust the distance between fixing base 1 and the lower fixing base 2 simultaneously, will await measuring bolt 7 and move into through breach 8 through opening 6, will await measuring bolt 7 and be close to the tip of bolt head and arrange in the recess 9 of cope match-plate pattern 3, lower bolster 4 is placed in holding tank 5 this moment, rotates apron 10 and covers the recess 9 opening, apron 10 adsorbs with magnet strip 14 this moment to fix apron 10 on cope match-plate pattern 3. After the bolt 7 to be tested is placed in the groove 9, the bolt 7 to be tested is moved into the adjusting groove 17 by means of an auxiliary tool such as a screwdriver, the fastening screw 12 is rotated to drive the abutting plate 13 to move towards the direction close to the bolt 7 to be tested, the abutting plate 13 is abutted against the bolt 7 to be tested, and then the bolt 7 to be tested is fixed in the groove 9. And finally, placing the clamp on a puller to perform a tensile test on the bolt 7 to be tested, so that the tensile strength of the bolt 7 to be tested can be detected.

As shown in fig. 1, in order to avoid the bolt 7 to be tested from being fixed on the upper fixing base 1 to drive the lower template 4 to move, the outer wall of the lower template 4 is provided with a clamping strip 15, and the side wall of the accommodating groove 5 of the lower fixing base 2 is provided with a clamping groove 16 for the clamping strip 15 to move in. The lower template 4 is placed in the groove 9, so that the clamping strip 15 is clamped in the clamping groove 16, and one end of the bolt 7 to be tested is fixed in the lower template 4.

Combine fig. 3 and fig. 4, because the partial bolt 7 that awaits measuring of selective examination has the unqualified condition of quality, for avoiding the piece spill when the bolt 7 that awaits measuring breaks, the circumference along 2 outer walls of fixing base down is provided with bellows 18, and the one end of bellows 18 is connected at 2 outer walls of fixing base down, and the other end can be dismantled and be connected on last fixing base 1. The outer wall of the upper fixed seat 1 is provided with a hanging ring 19, and one end of the corrugated pipe 18 is provided with a hook 20 hung on the hanging ring 19.

When the bolt 7 to be tested is tested, the corrugated pipe 18 is hung on the hanging ring 19 through the hook 20, so that scraps are prevented from splashing when the bolt 7 to be tested is broken, and the safety of the clamp in use is improved. When the bolt 7 to be tested needs to be installed, the hook 20 is taken down from the hanging ring 19, so that the corrugated pipe 18 is taken down from the upper fixed seat 1.

The implementation principle of the embodiment is as follows:

when the bolt 7 to be tested needs to be installed, the threaded section of the bolt 7 to be tested is inserted into the threaded hole 11 of the lower template 4 and screwed, and the upper template 3 is placed in the accommodating groove 5. Adjust apron 10 and open recess 9 opening, adjust the distance between fixing base 1 and the lower fixing base 2 simultaneously, will await measuring bolt 7 and move into through breach 8 through opening 6, will await measuring bolt 7 and be close to the tip of bolt head and arrange in the recess 9 of cope match-plate pattern 3, lower bolster 4 is placed in holding tank 5 this moment, rotates apron 10 and covers the recess 9 opening, apron 10 adsorbs with magnet strip 14 this moment to fix apron 10 on cope match-plate pattern 3. After the bolt 7 to be tested is placed in the groove 9, the bolt 7 to be tested is moved into the adjusting groove 17 by means of an auxiliary tool such as a screwdriver, the fastening screw 12 is rotated to drive the abutting plate 13 to move towards the direction close to the bolt 7 to be tested, the abutting plate 13 is abutted against the bolt 7 to be tested, and then the bolt 7 to be tested is fixed in the groove 9. The corrugated pipe 18 is hung on the hanging ring 19 through the hook 20, so that scraps are prevented from splashing when the bolt 7 to be detected is broken, and finally the clamp is placed on a puller to perform a tensile test on the bolt 7 to be detected, so that the tensile strength of the bolt 7 to be detected can be detected.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a bolt is anchor clamps for tensile test, includes fixing base (1) and lower fixing base (2), upward be provided with cope match-plate pattern (3) on fixing base (1), be provided with lower bolster (4), its characterized in that in lower fixing base (2): the upper fixing seat (1) and the lower fixing seat (2) are both provided with accommodating grooves (5), the upper fixing seat (1) and the lower fixing seat (2) are both provided with through holes (6) for bolts (7) to be tested to pass through, the through holes (6) are communicated with the accommodating grooves (5), the cross sections of the upper template (3) and the lower template (4) are both larger than the cross section of the through holes (6), the through holes (6) are communicated with notches (8) for the bolts (7) to be tested to move into, the upper template (3) is provided with grooves (9) for placing the bolts (7) to be tested, the upper template (3) is hinged with a cover plate (10) for covering or opening the openings of the grooves (9), the cover plate (10) is provided with a fastener for fastening the bolts (7) to be tested, and the upper template (3) is provided with a fixing part for fixing the cover plate (10), the lower template (4) is provided with a threaded hole (11).

2. The clamp for the tensile test of the bolt according to claim 1, wherein: the fastener includes fastening screw (12) that the apron (10) was worn to establish by the screw thread, fastening screw (12) are close to the tip of recess (9) and are provided with butt plate (13), fastening screw (12) rotate to be connected on butt plate (13), butt plate (13) set up to the arc with the laminating of bolt (7) surface that awaits measuring.

3. The clamp for the tensile test of the bolt according to claim 1, wherein: the fixing piece comprises a magnet strip (14) arranged on one side, away from the hinged position of the cover plate (10), of the upper template (3), and the cover plate (10) is arranged to be an iron plate adsorbed by the magnet strip (14).

4. The clamp for the tensile test of the bolt according to claim 1, wherein: the outer wall of the lower template (4) is provided with a clamping strip (15), and a clamping groove (16) used for allowing the clamping strip (15) to move in is formed in the side wall of the accommodating groove (5) of the lower fixing seat (2).

5. The clamp for the tensile test of the bolt according to claim 2, wherein: and an adjusting groove (17) is formed in the end part, far away from the abutting plate (13), of the fastening screw rod (12).

6. The clamp for the tensile test of the bolt according to claim 1, wherein: follow the circumference of lower fixing base (2) outer wall is provided with bellows (18), the one end fixed connection of bellows (18) is in lower fixing base (2) outer wall, and the other end can be dismantled and be connected on last fixing base (1).

7. The clamp for the tensile test of the bolt according to claim 6, wherein: the outer wall of the upper fixing seat (1) is provided with a hanging ring (19), and one end of the corrugated pipe (18) is provided with a hook (20) hung on the hanging ring (19).