CN111238926A - Clamp for steel strand testing machine - Google Patents
Clamp for steel strand testing machine Download PDFInfo
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- CN111238926A CN111238926A CN202010209105.3A CN202010209105A CN111238926A CN 111238926 A CN111238926 A CN 111238926A CN 202010209105 A CN202010209105 A CN 202010209105A CN 111238926 A CN111238926 A CN 111238926A
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- clamping sleeve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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Abstract
The invention relates to a clamp for a steel strand tester, which comprises a movable machine table arranged on a tester body, wherein a mounting frame is fixed on the movable machine table, a clamping sleeve is fixed on the mounting frame, a first connecting column, a second connecting column and a third connecting column which are distributed in a zigzag shape are sequentially arranged in the clamping sleeve, and a tightening cover is arranged at one end of the clamping sleeve; the tightening cover comprises a tightening plate arranged in parallel with the opening end face of the clamping sleeve and a sliding sleeve fixed on the tightening plate, one end of the sliding sleeve is connected with the tightening cover, and the other end of the sliding sleeve is in sliding fit with the inner wall of the clamping sleeve; a tightening opening is formed in the surface of the tightening plate connecting with the sliding sleeve, and a steering plate is fixed in the tightening opening; a counter pressure plate is fixed on the sliding sleeve, a pressing plate between the third connecting column and the counter pressure plate is further arranged in the clamping sleeve, and a through hole is formed in the outer side wall of the clamping sleeve. The invention enhances the fixation of the end part of the steel strand, prevents the steel strand from being separated and is beneficial to the smooth operation of a tensile test.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a clamp for a steel strand tester.
Background
In the foundation construction process of bridges, highways and the like, particularly in prestressed concrete construction, a large amount of steel strands are used, and the tensile force and the stress of the steel strands have decisive effect on the engineering quality, so that the tensile property parameters such as the tensile strength, the elongation force, the maximum force, the total elongation and the like, and the stress relaxation property parameters such as the stress relaxation force, the relaxation stress, the relaxation force and the like are tested on the adopted steel strands before and in the construction process. The steel strand is a steel product formed by twisting a plurality of steel wires, the contact area of the steel strand with the clamp is small, and the steel strand and the clamp are easy to slip only by adopting a simple clamping mode. For example, the chinese utility model patent with publication number CN207623125U discloses a steel strand testing machine, which comprises a base, an upper beam, an upright, a lead screw and a movable beam, wherein the upright is fixedly connected between the base and the upper beam; the screw rod is rotatably connected between the base and the upper cross beam, and the movable cross beam is penetrated by the upright post and is connected with the upright post in a sliding manner; the movable cross beam is penetrated by the lead screw and is in threaded connection with the lead screw, and the upper cross beam is provided with an upper jaw seat for clamping a steel strand; the movable cross beam is provided with a lower jaw seat for clamping a steel strand, the movable cross beam is provided with a tension sensor for detecting tension borne by the steel strand, and the top surface of the upper cross beam is provided with a hanging ring; the top surface of the upper cross beam is provided with a sliding groove, one end of the sliding groove penetrates through the side wall of the upper cross beam, and the groove width edge of the sliding groove is gradually reduced along one side departing from the groove bottom; the lower end of the hanging ring is provided with a sliding block which is connected with the sliding groove in a sliding manner; the upper end of the hanging ring is provided with a notch for placing a lifting rope.
The above prior art solutions have the following drawbacks: the testing machine clamps the steel strand through the jaw seat to fix the end part of the steel strand, the contact area of the jaw seat and the steel strand is limited, the steel strand is separated from the jaw seat easily during the tensile test of the steel strand, and the smooth proceeding of the test is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the clamp for the steel strand testing machine, which enhances the fixation of the end part of the steel strand, prevents the steel strand from being separated and is beneficial to the smooth performance of the tensile test.
The above object of the present invention is achieved by the following technical solutions:
a clamp for a steel strand tester comprises a movable machine table arranged on a tester body, wherein a mounting frame is fixedly arranged on the movable machine table, a clamping sleeve for fixing the end part of a steel strand is fixed on the mounting frame, and the length direction of the clamping sleeve is consistent with that of the steel strand during testing; a first connecting column, a second connecting column and a third connecting column which are distributed in a zigzag shape are sequentially arranged from one end close to the middle part of the steel strand to the other end in the clamping sleeve, and a tightening cover is arranged at one end of the clamping sleeve away from the middle part of the steel strand; the tightening cover comprises a tightening plate arranged in parallel with the opening end face of the clamping sleeve and a sliding sleeve fixed on the tightening plate, one end of the sliding sleeve is connected with the tightening cover, the other end of the sliding sleeve penetrates into the clamping sleeve, and the outer wall of the sliding sleeve is in sliding fit with the inner wall of the clamping sleeve; a tightening opening is formed in the surface of the tightening plate, which is connected with the sliding sleeve, and a steering plate is fixed in the tightening opening; the sliding sleeve is located one end in the clamping sleeve is fixed with a counter plate, a pressing plate located between the third connecting column and the counter plate is further arranged in the clamping sleeve, a penetrating hole used for penetrating the end portion of the steel strand is formed in the outer side wall of the clamping sleeve, and the penetrating hole is located between the pressing plate and the counter plate in the length direction of the clamping sleeve.
By adopting the technical scheme, when the end part of the steel strand is installed, an operator penetrates the end part of the steel strand into the clamping sleeve from one end of the clamping sleeve, which is far away from the tightening cover, the end part of the steel strand sequentially bypasses the first connecting column, the second connecting column and the third connecting column to penetrate into the tightening opening, the steel strand further bypasses the steering plate to penetrate into the sliding sleeve, finally the end part of the steel strand penetrates out of the clamping sleeve through the penetrating hole between the counter pressing plate and the tightening plate, finally the operator pulls the steel strand, the steel strand moves the tightening cover towards the clamping sleeve through the steering plate, so that the counter pressing plate is driven to move towards the tightening plate, the steel strand is pressed, when the tensile test of the steel strand is carried out, the larger the pulling force on the steel strand is, the larger the pressing effect of the counter pressing plate and the tightening plate on the steel strand is, the effect of tightening is generated, the fixation of the end part of the steel, is beneficial to the smooth operation of the tensile test.
The present invention in a preferred example may be further configured to: the third connecting column is fixed with the inner wall of the clamping sleeve, the abutting plate is in sliding fit with the inner wall of the clamping sleeve, and the abutting arc groove which is attached to the steel strand is formed in the surface, close to the third connecting column, of the abutting plate.
Through adopting above-mentioned technical scheme, when the steel strand wires are taut, tighten up and remove in the lid orientation clamping sleeve for the back pressure plate orientation supports the tight board and removes, thereby drives and supports the tight board and remove, and the steel strand wires surface of walking around on butt arc groove inner wall and the third spliced pole on the tight board supports tightly, and the part that the steel strand wires were walked around the third spliced pole and were passed through the back pressure plate this moment all is compressed tightly, thereby has further strengthened fixing of steel strand wires and clamping sleeve, prevents that the steel strand wires from breaking away from.
The present invention in a preferred example may be further configured to: the connecting plate is fixed on the sliding sleeve and is attached to the inner wall of the clamping sleeve, one end of the connecting plate is connected with the sliding sleeve, the other end of the connecting plate extends to the second connecting column, an arc-shaped pressing plate is fixed at one end, close to the second connecting column, of the connecting plate, and the steel strand in the clamping sleeve penetrates through the arc-shaped pressing plate and between the second connecting columns.
Through adopting above-mentioned technical scheme, when the steel strand wires are taut, tighten up the lid and slide towards the clamping sleeve, drive the connecting plate fixed with the sliding sleeve and remove towards the second spliced pole for arc clamp plate on the connecting plate supports tightly with the steel strand wires surface of walking around the second spliced pole, thereby has further strengthened the fixed of steel strand wires and clamping sleeve.
The present invention in a preferred example may be further configured to: a sliding block which is in sliding connection with the inner wall of the clamping sleeve is further arranged in the clamping sleeve, the second connecting column is in sliding connection with the inner wall of the clamping sleeve, and the sliding direction of the second connecting column is perpendicular to that of the sliding sleeve; one side of the second connecting column, which is far away from the steel strand, is provided with a butting plane which butts against the sliding block; and a compression bolt is arranged on the clamping sleeve, the end part of the compression bolt penetrates through the clamping sleeve and is rotatably connected with the surface of the sliding block far away from the second connecting column, and the compression bolt is in threaded fit with the clamping sleeve.
Through adopting above-mentioned technical scheme, when clamp bolt screwed, clamp bolt drives the sliding block and removes towards the second spliced pole, and the sliding block supports the second spliced pole for the steel strand wires that bypass the second spliced pole support tightly with the clamping sleeve inner wall, and arc clamp plate on the connecting plate supports tightly with the steel strand wires of this department simultaneously, thereby makes the steel strand wires that bypass the second spliced pole receive two ascending effects of compressing tightly of vertical direction, thereby makes the steel strand wires that bypass the second spliced pole compressed tightly by all-round.
The present invention in a preferred example may be further configured to: a guide sleeve for guiding the steel strand into the clamping sleeve is fixed on the mounting frame, and the section of the guide sleeve is U-shaped; an operation opening convenient for an operator to put in and bend the steel strand is formed in one side of the clamping sleeve, a sealing plate detachably connected with the clamping sleeve is further arranged on the clamping sleeve, and the sealing plate seals the operation opening; and a matching strip penetrating into the guide sleeve from one side of the guide sleeve is fixed on the closing plate.
By adopting the technical scheme, after the steel strand penetrates through the guide sleeve and is wound in the clamping sleeve, the closing plate is installed on one side of the clamping sleeve by an operator, so that an operation opening on the clamping sleeve is closed, and at the moment, the matching strip on the closing plate is inserted into the guide sleeve and is tightly propped against the steel strand in the guide sleeve, so that the steel strand and the clamping sleeve are reinforced.
The present invention in a preferred example may be further configured to: a fixed frame is fixed on the sealing plate, an inserting plate is fixed on the fixed frame, an inserting groove penetrating through the fixed frame is formed in the surface, close to the fixed frame, of the mounting frame, and the inserting plate penetrates through the inserting groove and penetrates out of the mounting frame; a locking block is fixed on the outer side wall of the clamping sleeve far away from the closing plate; the surface of the locking block, which is close to the insertion plate, is provided with a sliding groove which penetrates through the locking block, and the side wall of the locking block, which is far away from the clamping sleeve, is provided with a driving groove communicated with the middle part of the sliding groove; two oppositely arranged plug-in columns are arranged in the sliding groove, the end faces, close to each other, of the plug-in columns incline towards the driving groove, and the plug-in columns are in sliding fit with the inner wall of the sliding groove; a driving column in threaded fit with the inner wall of the driving groove is arranged in the driving groove, one end of the driving column is arranged outside the driving groove, a circular platform block is fixed at the other end of the driving column, the arc-shaped surface of the circular platform block is abutted against the end face of the insertion column, which inclines towards the driving groove, and a rotating block is fixed at one end of the driving column, which penetrates out of the driving groove; the surface of the plug board close to the locking block is provided with a locking groove, and the locking groove is in plug-in fit with one end of the plug column penetrating out of the sliding groove.
Through adopting above-mentioned technical scheme, when operating personnel rotated the turning block, the drive post rotated, drove the round platform piece and removed towards the sliding tray to make the spliced pole that offsets with the round platform piece remove towards the plugboard, until the spliced pole insert the spliced groove on the plugboard in, thereby make the plugboard fixed, make mount and mounting bracket fixed, thereby make the closing plate seal the clamping sleeve.
The present invention in a preferred example may be further configured to: the locking groove is kept away from the inside wall orientation of mount the locking block slope, the grafting post is worn out the one end terminal surface orientation of locking block is kept away from the direction slope of mount, just the slope terminal surface of grafting post with the slope inner wall laminating of locking groove offsets.
Through adopting above-mentioned technical scheme, when the grafting post inserted the locking inslot, the slope terminal surface of grafting post and the laminating of the slope inner wall of locking groove and support tightly for the mount compresses tightly with the mounting bracket, thereby makes the steel strand wires packing force reinforcing in the cooperation strip is to the uide bushing.
In summary, the invention includes at least one of the following beneficial technical effects:
when a tensile test of the steel strand is performed, the greater the tensile force on the steel strand. The pressing action of the counter pressing plate and the abutting plate on the steel strand is larger, so that the effect of tightening the steel strand is generated, the fixation of the end part of the steel strand is enhanced, the steel strand is prevented from being separated, and the smooth performance of a tensile test is facilitated;
when the steel strand is tensioned, the part of the steel strand, which bypasses the third connecting column and passes through the counter pressure plate, is compressed, so that the fixation of the steel strand and the clamping sleeve is further enhanced, and the steel strand is prevented from being separated;
when the inserting column is inserted into the inserting groove, the inclined end face of the inserting column is attached to and abutted against the inclined inner wall of the inserting groove, so that the fixing frame is pressed against the mounting frame, and the pressing force of the matching strip on the steel strand in the guide sleeve is enhanced.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
FIG. 2 is an internal schematic view of the clamping sleeve.
Fig. 3 is a schematic view of the internal structure of the locking block.
Reference numerals: 1. moving the machine table; 2. a mounting frame; 21. inserting grooves; 22. a guide sleeve; 3. a clamping sleeve; 31. a first connecting column; 32. a second connecting column; 33. a third connecting column; 34. a slider; 35. a hold-down bolt; 36. a propping plate; 361. abutting against the arc groove; 37. an outlet hole is formed; 4. a fixed mount; 41. a plugboard; 411. a locking groove; 42. a mating strip; 5. a closing plate; 6. tightening the cover; 61. tightening the plate; 611. tightening the opening; 612. a steering plate; 62. a sliding sleeve; 621. a counter-pressure plate; 622. a connecting plate; 623. an arc-shaped pressing plate; 7. a locking block; 71. a sliding groove; 711. inserting the column; 712. a limiting groove; 713. a limiting block; 714. extending the spring; 72. a drive slot; 721. a drive column; 722. rotating the block; 723. a round table block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the clamp for the steel strand testing machine disclosed by the invention comprises a movable machine table 1, a mounting frame 2, a clamping sleeve 3, a fixing frame 4, a closing plate 5 and a tightening cover 6. The movable machine table 1 is rectangular block-shaped and fixedly mounted on the horizontal testing machine body, and when the testing machine body is started, the movable machine table 1 is driven to move reversely. As shown in fig. 2, the mounting frame 2 is a U-shaped frame structure, two ends of the mounting frame face the direction away from the middle of the steel strand during the test, and the bottom surface of the mounting frame 2 is fixed to the upper surface of the mobile machine table 1. The length direction of the clamping sleeve 3 is consistent with that of a steel strand test, and the section of the clamping sleeve 3 is U-shaped, so that an operation opening is formed in one side of the clamping sleeve 3. Mounting bracket 2 sets up in 3 one ends of clutch collar, and the both ends of mounting bracket 2 set up respectively in 3 upper and lower both sides of clutch collar and fixed with clutch collar 3, and clutch collar 3 is close to the one end opening terminal surface at steel strand wires middle part and is fixed with 2 inside walls of mounting bracket to make 3 fixed mounting of clutch collar on removing board 1. The closing plate 5 is rectangular plate-shaped and is vertically arranged on one side of the clamping sleeve 3 provided with the operation opening, and the closing plate 5 is attached to the side wall of the clamping sleeve 3 provided with the operation opening. The fixing frame 4 is of a U-shaped frame structure and is vertically arranged in parallel with the mounting frame 2, two ends of the fixing frame 4 are respectively arranged on the upper side and the lower side of the sealing plate 5 and are fixed with the sealing plate 5, and one end, close to the steel strand, of the sealing plate 5 is fixed with the inner side wall of the fixing frame 4. Be equipped with plugboard 41 on mount 4, plugboard 41 is rectangular plate-like, and its level sets up, and plugboard 41 one end is fixed with the lateral wall that mount 4 is close to mounting bracket 2, and the other end is towards mounting bracket 2. Mounting bracket 2 has been close to the lateral wall of mount 4 and has been seted up inserting groove 21, and the opening of inserting groove 21 is the rectangle, and it runs through mounting bracket 2, and inserting groove 21 inner wall and the cooperation of sliding in the pegboard 41 surface, when the operation mouth on 5 closed clamping sleeve 3 of closing plate, the one end that mount 4 was kept away from to pegboard 41 on the mount 4 runs through inserting groove 21 and wears out one side lateral wall that mount 2 kept away from mount 4. The two groups of the inserting plates 41 and the inserting grooves 21 are arranged, and the two inserting plates 41 are respectively arranged on the upper side and the lower side of the clamping sleeve 3. A guide sleeve 22 is fixed on the side wall of the mounting frame 2 close to the fixing frame 4, the section of the guide sleeve 22 is U-shaped, the length direction of the guide sleeve 22 is consistent with the length direction of the clamping sleeve 3, and one side of the opening of the guide sleeve 22 faces the fixing frame 4. The side wall of the fixing frame 4 close to the mounting frame 2 is fixed with a matching strip 42, the matching strip 42 is a strip-shaped structure with a rectangular cross section, the length direction of the matching strip is consistent with that of the guide sleeve 22, and the matching strip 42 is aligned with an opening on one side of the guide sleeve 22 close to the fixing frame 4.
Referring to fig. 1 and 3, a locking block 7 is arranged on one side of the clamping sleeve 3 away from the closing plate 5, the locking block 7 is in a rectangular block shape and fixed with the outer side wall of the clamping sleeve 3 away from the closing plate 5, and a sliding groove 71 is formed in the upper surface of the locking block 7. The opening of the sliding groove 71 is rectangular, the sliding groove 71 penetrates through the locking block 7, and the insertion column 711 is arranged in the sliding groove 71. The two insertion columns 711 are arranged oppositely, and the two insertion columns 711 are arranged in the sliding groove 71 and are in sliding fit with the inner side wall of the sliding groove 71. The end surfaces of the adjacent ends of the insertion columns 711 incline towards the direction away from the clamping sleeve 3, and the other ends of the insertion columns 711 penetrate through the locking blocks 7. The inner wall of the sliding groove 71 is provided with a limiting groove 712, the cross section of the limiting groove 712 is rectangular, the length direction of the limiting groove 712 is consistent with the length direction of the sliding groove 71, and the limiting groove 712 is internally provided with a tension spring 714 and a limiting block 713. The limiting block 713 is in a rectangular block shape, is disposed in the limiting groove 712 and is in sliding fit with the inner wall of the limiting groove 712, and the surface of the limiting block 713, which is exposed out of the opening of the limiting groove 712, is fixed with the inserting column 711, so that the sliding stroke of the inserting column 711 is limited. The axial line of the extension spring 714 is consistent with the length direction of the limiting groove 712, one end of the extension spring 714 is fixed with the surface of the limiting block 713 close to the plugboard 41, the other end of the extension spring 714 is fixed with the limiting groove 712 and the inner wall of one end of the plugboard 41, and the extension spring 714 is kept in a compressed state, so that the plugboard 711 always has an effect of facing the inside of the sliding groove 71. The side wall of the locking block 7 far away from the clamping sleeve 3 is provided with a driving groove 72, the driving groove 72 is positioned in the middle of the sliding groove 71, the opening of the driving groove 72 is circular, and the driving groove 72 is communicated with the inner side wall of the sliding groove 71 far away from the clamping sleeve 3. The driving slot 72 is provided with a driving column 721, the driving column 721 is a cylindrical structure, one end of the driving column penetrates into the sliding slot 71, the other end of the driving column penetrates out of the locking block 7, and the driving column 721 is in threaded fit with the inner wall of the driving slot 72. One end of the driving column 721 penetrating through the locking block 7 is fixed with a rotating block 722, the rotating block 722 is in a circular block shape, and the axis of the rotating block 722 is overlapped with the axis of the driving column 721, so that an operator can conveniently rotate the driving column 721. One end of the driving column 721 penetrating into the sliding groove 71 is fixed with a circular truncated cone 723, the circular truncated cone 723 is circular truncated cone-shaped, the axis of the circular truncated cone 723 coincides with the axis of the driving column 721, and the arc-shaped surface of the circular truncated cone 723 abuts against the end face of one end of the inserting column 711 in the sliding groove 71. Locking groove 411 has been seted up on the surface that plugboard 41 is close to the locking hole, the opening that locks groove 411 is the rectangle, its inside wall that keeps away from mount 4 inclines towards pluging post 711, when operating personnel rotated turning block 722, turning block 722 drives actuating column 721 and rotates, make round platform piece 723 remove in towards sliding tray 71, thereby make pluging post 711 remove outside sliding tray 71, insert in locking groove 411 until the one end that pluging post 711 worn out locking block 7, and pluging post 711 is located the outer one end terminal surface of locking block 7 and the laminating of the slope inside wall that locks groove 411 and offset, so pluging post 711 has the effect that pulling mount 4 removed towards mounting bracket 2 to plugboard 41, thereby make cooperation strip 42 on the mount 4 insert in the uide bushing 22 and support tightly with the steel strand wires in the uide bushing 22.
Referring to fig. 1 and 2, a first connecting column 31, a second connecting column 32, a third connecting column 33, a sliding block 34, a pressing bolt 35 and a pressing plate 36 are arranged in the clamping sleeve 3. The first connecting column 31 is a cylindrical structure, the axis of the first connecting column is horizontal and vertical to the length direction of the clamping sleeve 3, and one end of the first connecting column 31, which is far away from the closing plate 5, is fixed with the inner side wall of the clamping sleeve 3. The second connecting column 32 is a cylinder, the axis of which is parallel to the axis of the first connecting column 31, and one end of the second connecting column 32, which is far away from the closing plate 5, is slidably connected with the inner side wall of the clamping sleeve 3, and in addition, the sliding direction of the second connecting column 32 relative to the clamping sleeve 3 is vertical. The butt plane has been seted up to the top face of cylinder of second spliced pole 32, and the butt plane level sets up, and the butt plane sets up in the axis upside of second spliced pole 32. The sliding block 34 is rectangular block-shaped, and it sets up in the clamping sleeve 3, and the length direction of sliding block 34 is parallel with the axis of second spliced pole 32, and the one end that the closing plate 5 was kept away from to sliding block 34 is with the inside wall sliding connection of clamping sleeve 3, and sliding block 34 is vertical for the sliding direction of clamping sleeve 3, and in addition, the butt plane laminating on sliding block 34 bottom surface and the second spliced pole 32 is balanced out. The end of the pressing bolt 35 penetrates through the upper surface of the clamping sleeve 3 and penetrates into the clamping sleeve 3, the pressing bolt 35 is in threaded fit with the clamping sleeve 3, and the end of the pressing bolt 35 is rotatably connected with the upper surface of the sliding block 34. The third connecting column 33 is a cylindrical structure, the axis of the third connecting column is parallel to the axis of the first connecting column 31, one end of the third connecting column 33, which is far away from the closing plate 5, is fixed with the inner side wall of the clamping sleeve 3, and in addition, the first connecting column 31, the second connecting column 32 and the third connecting column 33 are far away from the mounting frame 2 along the length direction of the clamping sleeve 3 and are distributed in a zigzag shape. The tightening cover 6 comprises a tightening plate 61 and a sliding sleeve 62, the tightening plate 61 is rectangular plate-shaped and vertically arranged at one end of the clamping sleeve 3 far away from the mounting frame 2, and the plate surface of the tightening plate 61 is perpendicular to the length direction of the clamping sleeve 3. The sliding sleeve 62 is of a sleeve-shaped structure with a rectangular opening, one end of the sliding sleeve is fixed to the surface of the tightening plate 61 close to the clamping sleeve 3, the other end of the sliding sleeve penetrates into the opening at the end, far away from the mounting frame 2, of the clamping sleeve 3, and the outer wall of the sliding sleeve 62 is in sliding fit with the inner wall of the clamping sleeve 3. The plate surface of the tightening plate 61 is provided with a tightening opening 611, the tightening opening 611 is rectangular, and the tightening opening 611 is communicated with the inside of the sliding sleeve 62. The tightening opening 611 is internally provided with a steering plate 612, the steering plate 612 is in a rectangular plate shape and is horizontally arranged, the steering plate is fixed with the inner side walls of the two sides of the tightening opening 611, and the steering plate 612 is arranged in the middle of the tightening opening 611. The sliding sleeve 62 is provided with a counter pressure plate 621, the counter pressure plate 621 is rectangular and vertically arranged, the counter pressure plate 621 is arranged between the sliding sleeve 62 and the third connecting column 33, and the opening at one end of the sliding sleeve 62 close to the third connecting column 33 is fixed on the upper side of the counter pressure plate 621. The abutting plate 36 is rectangular plate-shaped and vertically arranged between the counter pressure plate 621 and the third connecting column 33, the upper side edge of the abutting plate 36 is slidably connected with the inner top surface of the clamping sleeve 3, and the sliding direction of the abutting plate 36 relative to the clamping sleeve 3 is consistent with the length direction of the sliding sleeve 62. The surface of the abutting plate 36 close to the third connecting column 33 is provided with an abutting arc groove 361, the length direction of the abutting arc groove 361 is vertical, and the horizontal section of the inner wall of the abutting arc groove 361 is arc-shaped. The upper surface of the clamping sleeve 3 is provided with a through hole 37, the opening of the through hole 37 is circular, the through hole penetrates through the inner top surface of the clamping sleeve 3, and the axis of the through hole 37 is arranged between the abutting plate 36 and the back pressure plate 621. The bottom of the sliding sleeve 62 is provided with a connecting plate 622, the connecting plate 622 is rectangular plate-shaped and horizontally arranged, the bottom surface of the connecting plate 622 is attached to the inner bottom surface of the clamping sleeve 3 and is in sliding fit with the inner bottom surface of the clamping sleeve, one end of the connecting plate 622 and the sliding sleeve 62 are fixed on the lower side of an opening at one end in the clamping sleeve 3, and the other end of the connecting plate 622 faces the second connecting column 32. An arc-shaped pressure plate 623 is fixed at one end of the connecting plate 622 close to the second connecting column 32, the arc-shaped pressure plate 623 is in an arc-shaped plate shape, the length direction of the arc-shaped pressure plate 623 is horizontal and vertical to the length direction of the clamping sleeve 3, and the smaller arc-shaped surface of the arc-shaped pressure plate 623 faces the cylindrical surface of the second connecting column 32.
The implementation principle of the embodiment is as follows: when the ends of the steel strands are installed, an operator penetrates the ends of the steel strands into the clamping sleeve 3 from one end of the clamping sleeve 3, which is far away from the tightening cover 6, the ends of the steel strands sequentially pass through the first connecting column 31, the second connecting column 32 and the third connecting column 33 and penetrate into the tightening opening 611, the steel strands pass through the steering plate 612 and penetrate into the sliding sleeve 62, finally the ends of the steel strands pass through the space between the counter pressing plate 621 and the tightening plate 36 and penetrate out of the clamping sleeve 3 through the penetrating hole 37, finally the operator pulls the steel strands, the steel strands drive the tightening cover 6 to move towards the clamping sleeve 3 through the steering plate 612, so that the counter pressing plate 621 is driven to move towards the tightening plate 36, the tightening plate 36 moves towards the third connecting column 33, the steel strands between the counter pressing plate 621 and the tightening plate and the steel strands between the tightening plate and the third connecting column 33 are both pressed, and in addition, the sliding sleeve 62 drives the connecting plate 622 to move towards the second connecting, make the arc surface of arc clamp plate 623 support tightly with the steel strand wires of walking around second spliced pole 32, so when carrying out the tensile test of steel strand wires, the pulling force on the steel strand wires is big more, and the back pressure plate 621 is big more with the effect of compressing tightly the steel strand wires with supporting tight board 36 to produce and pull tight effect more, strengthened the fixed to the steel strand wires tip, prevent breaking away from of steel strand wires, be favorable to tensile test's going on smoothly. Finally, the operator screws the compression bolt 35 to move the sliding block 34 downward, so as to drive the second connecting column 32 to move downward, so that the steel strand bypassing the second connecting column 32 is compressed, the connection between the steel strand and the clamping sleeve 3 is further strengthened, and the steel strand is prevented from being separated from the clamping sleeve 3.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a steel strand wires anchor clamps for testing machine, is including installing removal board (1) on the testing machine organism, its characterized in that: the mobile machine table (1) is fixedly provided with an installation frame (2), a clamping sleeve (3) for fixing the end part of the steel strand is fixed on the installation frame (2), and the length direction of the clamping sleeve (3) is consistent with that of the steel strand during a test; a first connecting column (31), a second connecting column (32) and a third connecting column (33) which are distributed in a zigzag shape are sequentially arranged from one end close to the middle of the steel strand to the other end in the clamping sleeve (3), and a tightening cover (6) is arranged at one end of the clamping sleeve (3) far away from the middle of the steel strand; the tightening cover (6) comprises a tightening plate (61) arranged in parallel with the opening end face of the clamping sleeve (3) and a sliding sleeve (62) fixed on the tightening plate (61), one end of the sliding sleeve (62) is connected with the tightening cover (6), the other end of the sliding sleeve (62) penetrates into the clamping sleeve (3), and the outer wall of the sliding sleeve (62) is in sliding fit with the inner wall of the clamping sleeve (3); a tightening opening (611) is formed in the surface of the tightening plate (61) connected with the sliding sleeve (62), and a steering plate (612) is fixed in the tightening opening (611); sliding sleeve (62) are located one end in clamping sleeve (3) is fixed with counter plate (621), still be equipped with in clamping sleeve (3) and be located third spliced pole (33) with prop tight board (36) between counter plate (621), clamping sleeve (3) lateral wall is offered and is used for passing the hole (37) of wearing of steel strand wires tip, wear hole (37) in the length direction of clamping sleeve (3) is located prop tight board (36) with between counter plate (621).
2. The clamp for the steel strand testing machine according to claim 1, wherein: the third connecting column (33) is fixed to the inner wall of the clamping sleeve (3), the abutting plate (36) is in sliding fit with the inner wall of the clamping sleeve (3), and the abutting arc groove (361) which is attached to the steel strand is formed in the surface, close to the third connecting column (33), of the abutting plate (36).
3. The clamp for the steel strand testing machine according to claim 1, wherein: be fixed with the laminating on sliding sleeve (62) connecting plate (622) that clamping sleeve (3) inner wall set up, connecting plate (622) one end with sliding sleeve (62) are connected, and the other end extends to second spliced pole (32), just connecting plate (622) are close to second spliced pole (32) one end is fixed with arc clamp plate (623), the steel strand wires in clamping sleeve (3) pass arc clamp plate (623) with between second spliced pole (32).
4. The clamp for the steel strand testing machine according to claim 3, wherein: a sliding block (34) which is in sliding connection with the inner wall of the clamping sleeve (3) is further arranged in the clamping sleeve (3), the second connecting column (32) is in sliding connection with the inner wall of the clamping sleeve (3), and the sliding direction of the second connecting column (32) is perpendicular to that of the sliding sleeve (62); one side of the second connecting column (32) far away from the steel strand is provided with a butting plane which butts against the sliding block (34); the clamping sleeve (3) is provided with a pressing bolt (35), the end of the pressing bolt (35) penetrates through the clamping sleeve (3) and is rotatably connected with the surface of the sliding block (34) far away from the second connecting column (32), and the pressing bolt (35) is in threaded fit with the clamping sleeve (3).
5. The clamp for the steel strand testing machine according to claim 1, wherein: a guide sleeve (22) for guiding a steel strand into the clamping sleeve (3) is fixed on the mounting frame (2), and the section of the guide sleeve (22) is U-shaped; an operation opening convenient for an operator to put in and bend the steel strand is formed in one side of the clamping sleeve (3), a sealing plate (5) detachably connected with the clamping sleeve (3) is further arranged on the clamping sleeve (3), and the sealing plate (5) seals the operation opening; and a matching strip (42) penetrating into the guide sleeve (22) from one side of the guide sleeve (22) is fixed on the closing plate (5).
6. The clamp for the steel strand testing machine according to claim 5, wherein: a fixed frame (4) is fixed on the closing plate (5), an inserting plate (41) is fixed on the fixed frame (4), an inserting groove (21) penetrating through the mounting frame (2) is formed in the surface, close to the fixed frame (4), of the mounting frame (2), and the inserting plate (41) penetrates through the inserting groove (21) and penetrates out of the mounting frame (2); a locking block (7) is fixed on the outer side wall of the clamping sleeve (3) far away from the closing plate (5); the surface of the locking block (7) close to the plug board (41) is provided with a sliding groove (71) penetrating through the locking block (7), and the side wall of the locking block (7) far away from the clamping sleeve (3) is provided with a driving groove (72) communicated with the middle part of the sliding groove (71); two oppositely arranged plug columns (711) are arranged in the sliding groove (71), the end faces, close to each other, of the plug columns (711) incline towards the driving groove (72), and the plug columns (711) are in sliding fit with the inner wall of the sliding groove (71); a driving column (721) in threaded fit with the inner wall of the driving groove (72) is arranged in the driving groove (72), one end of the driving column (721) is arranged outside the driving groove (72), a circular platform block (723) is fixed at the other end of the driving column, the arc-shaped surface of the circular platform block (723) is abutted to the end face, inclined towards the driving groove (72), of the insertion column (711), and a rotating block (722) is fixed at one end, penetrating out of the driving groove (72), of the driving column (721); the surface of the plug board (41) close to the locking block (7) is provided with a locking groove (411), and the locking groove (411) is in plug-in fit with one end of the plug column (711) penetrating through the sliding groove (71).
7. The clamp for the steel strand testing machine according to claim 6, wherein: the locking groove (411) is far away from the inner side wall of the fixing frame (4) and faces towards the locking block (7) to incline, the insertion column (711) penetrates out of the locking block (7), the end face of one end of the insertion column faces towards the direction far away from the fixing frame (4) to incline, and the inclined end face of the insertion column (711) is attached to and abutted against the inclined inner wall of the locking groove (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209105.3A CN111238926B (en) | 2020-03-23 | 2020-03-23 | Clamp for steel strand testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209105.3A CN111238926B (en) | 2020-03-23 | 2020-03-23 | Clamp for steel strand testing machine |
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| Publication Number | Publication Date |
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| CN111238926A true CN111238926A (en) | 2020-06-05 |
| CN111238926B CN111238926B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010209105.3A Active CN111238926B (en) | 2020-03-23 | 2020-03-23 | Clamp for steel strand testing machine |
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| Publication number | Publication date |
|---|---|
| CN111238926B (en) | 2022-04-15 |
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