CN209802844U - Clamp for steel bar tensile testing machine - Google Patents
Clamp for steel bar tensile testing machine Download PDFInfo
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- CN209802844U CN209802844U CN201920574415.8U CN201920574415U CN209802844U CN 209802844 U CN209802844 U CN 209802844U CN 201920574415 U CN201920574415 U CN 201920574415U CN 209802844 U CN209802844 U CN 209802844U
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Abstract
The utility model relates to an anchor clamps for reinforcing bar tensile test machine. The fixture comprises a fixture body, wherein two groups of U-shaped mounting blocks with opposite openings are fixedly connected to the front surface of the fixture body, and positioning blocks are detachably connected in the openings of the two groups of U-shaped mounting blocks; positioning chutes obliquely extending towards the U-shaped mounting block from bottom to top are formed in the front side surfaces of the two groups of positioning blocks, and the two groups of positioning chutes are symmetrically arranged; the positioning blocks are provided with clamping blocks which can slide along the positioning sliding grooves, and the opposite surfaces of the two groups of clamping blocks can clamp the reinforcing steel bars; a pre-tightening block is arranged between the two groups of clamping blocks, one end of the pre-tightening block is movably connected with the two groups of clamping blocks, and the other end of the pre-tightening block is fixedly connected with a screw; the screw penetrates through the fixture body and is in threaded connection with the fixture body, an adjusting handle is fixedly connected to the outer end of the screw, a connector is rotatably connected to the adjusting handle, and the connector is connected with the tensile testing machine; and the front side surfaces of the clamping block and the U-shaped mounting block are provided with pressing plates. The utility model discloses but be convenient for change press from both sides tight piece, centre gripping large size sample.
Description
Technical Field
The utility model belongs to the technical field of tensile test, especially, relate to an anchor clamps for reinforcing bar tensile test machine.
Background
Steel bars and concrete are the main materials constituting building structures. The concrete has good cohesive force with the reinforcing steel bar, the temperature linear expansion coefficient of the reinforcing steel bar is similar to that of the concrete, more importantly, the reinforcing steel bar is wrapped in the concrete to avoid the corrosion of the external environment, and the concrete plays a good role in protecting the reinforcing steel bar. In building structural materials, reinforcing steel bars are an important component, and the applicability and safety of a structure are directly influenced by the performance of the reinforcing steel bars. The quality requirements of the steel bars are very high, and the steel bars need to be subjected to necessary performance detection before being used for engineering construction.
The tensile strength, the elongation and the yield strength of the steel bar are three basic mechanical performance indexes of the steel bar, and the three indexes are obtained through a steel bar tensile test. Therefore, the accuracy of the steel bar tension detection is crucial. The tensile testing machine is used for the steel bar tensile testing, the clamp is an indispensable device in the tensile testing machine, when the tensile testing is carried out on steel bar samples with different specifications, the clamping block needs to be frequently replaced, and when the clamping block is replaced, the nut needs to be repeatedly screwed and unscrewed, so that the process is very complicated; meanwhile, one side of the head of the clamp body is of a closed structure, so that a sample with a wider size cannot be placed, and the test cannot be performed easily.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem who exists among the known art and provide a but be convenient for change press from both sides tight piece, centre gripping jumbo size sample's an anchor clamps for reinforcing bar tensile testing machine.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a clamp for a steel bar tensile testing machine comprises a clamp body, wherein two groups of U-shaped mounting blocks with opposite openings are fixedly connected to the front side of the clamp body, and positioning blocks are detachably connected in the openings of the two groups of U-shaped mounting blocks through adjusting bolts; positioning sliding grooves which obliquely extend towards the U-shaped mounting block from bottom to top are formed in the front side surfaces of the two groups of positioning blocks, and the two groups of positioning sliding grooves are symmetrically arranged; the positioning blocks are provided with clamping blocks which can slide along the positioning sliding grooves, and the opposite surfaces of the two groups of clamping blocks can clamp the reinforcing steel bars; a pre-tightening block is arranged between the two groups of clamping blocks, one end of the pre-tightening block is movably connected with the two groups of clamping blocks, the other end of the pre-tightening block is fixedly connected with a screw, and the screw and the pre-tightening block are coaxially arranged; the screw rod penetrates through the clamp body and is in threaded connection with the clamp body, an adjusting handle is fixedly connected to the outer end portion of the screw rod, a connector is rotatably connected to the outer end portion of the adjusting handle through a rolling bearing, and the connector is connected with the tensile testing machine; and the front side surfaces of the clamping block and the U-shaped mounting block are provided with pressing plates connected with the U-shaped mounting block.
The utility model has the advantages that: the utility model provides an anchor clamps for reinforcing bar tensile test machine, compared with the prior art, the utility model provides a press from both sides tight piece and can remove along the location spout under the effect of pretension piece, save and press from both sides tight piece through screw restraint for the simple easy operation of change process of pressing from both sides tight piece, simultaneously, the locating piece passes through adjusting bolt and can dismantle with U type installation piece and be connected, makes the distance between two sets of locating pieces adjustable, thereby can carry out the centre gripping that stabilizes to the great sample of size.
Preferably: the pre-tightening block comprises a push plate and a connecting plate which are arranged in parallel, and a connecting shaft which is perpendicular to the push plate and the connecting plate is fixedly connected between the push plate and the connecting plate; the opposite surfaces of the clamping blocks are respectively provided with a transverse opening which is transversely arranged and corresponds to the position, the push plates are clamped in the transverse openings, the connecting shafts are positioned between the opposite surfaces of the clamping blocks, and the connecting plates are positioned on the outer sides of the end surfaces of the clamping blocks.
Preferably: the opposite surfaces of the two groups of clamping blocks are planes with saw-toothed grooves or V-shaped surfaces with saw-toothed grooves.
Preferably: the opposite surfaces of the two groups of clamping blocks can be detachably connected with clamp blocks, and the opposite surfaces of the clamp blocks are planes with saw-tooth grooves or V-shaped surfaces with saw-tooth grooves.
Preferably: the two groups of pressure plates are provided with oblique waist-shaped holes, and the extension direction of the oblique waist-shaped holes is consistent with that of the corresponding positioning chutes; the front side surface of the clamping block is fixedly connected with a sliding column which extends into the oblique waist-shaped hole; the pressing plate is provided with a transverse waist-shaped hole which is transversely arranged, and the pressing plate is detachably connected with the U-shaped mounting block through a fastening bolt which is arranged in the transverse waist-shaped hole in a penetrating manner and a fastening nut on the fastening bolt.
Preferably: the connector is cylindrical, offers the connection cross bore that is used for being connected with tensile testing machine on the connector.
Drawings
Fig. 1 is a schematic view of the partial sectional structure of the front view of the present invention.
In the figure: 1. pressing a plate; 2. a transverse waist-shaped hole; 3. a traveler; 4. an oblique waist-shaped hole; 5. positioning blocks; 5-1, positioning a chute; 6. a clamp block; 7. a clamping block; 7-1, transverse opening; 8. adjusting the bolt; 9. a pre-tightening block; 9-1, pushing a plate; 9-2, connecting plates; 9-3, a connecting shaft; 10. a U-shaped mounting block; 11. a clamp body; 12. a screw; 13. adjusting the handle; 14. a connector; 14-1, connecting the transverse holes.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:
Referring to fig. 1, the clamp for a steel bar tensile testing machine of the present invention includes a clamp body 11, two sets of U-shaped mounting blocks 10 with opposite openings are fixedly connected to the front side of the clamp body 11, and positioning blocks 5 are detachably connected to the openings of the two sets of U-shaped mounting blocks 10 through adjusting bolts 8; the front side surfaces of the two groups of positioning blocks 5 are respectively provided with positioning chutes 5-1 which obliquely extend towards the U-shaped mounting block 10 from bottom to top, and the two groups of positioning chutes 5-1 are symmetrically arranged.
The positioning block 5 is provided with clamping blocks 7 which can slide along the positioning sliding groove 5-1, and the opposite surfaces of the two groups of clamping blocks 7 can clamp the reinforcing steel bars; the opposite surfaces of the two groups of clamping blocks 7 are planes with saw-toothed grooves or V-shaped surfaces with saw-toothed grooves. In addition, in order to prolong the service life of the clamping blocks 7 and improve the universality of the clamp, the clamping blocks 6 can be detachably connected to the opposite surfaces of the two groups of clamping blocks 7, and the opposite surfaces of the clamping blocks 6 are planes with saw-tooth grooves or V-shaped surfaces with saw-tooth grooves.
A pre-tightening block 9 is arranged between the two groups of clamping blocks 7, the pre-tightening block 9 comprises a push plate 9-1 and a connecting plate 9-2 which are arranged in parallel, and a connecting shaft 9-3 which is arranged vertically to the push plate 9-1 and the connecting plate 9-2 is fixedly connected between the push plate 9-1 and the connecting plate 9-2; the opposite surfaces of the two groups of clamping blocks 7 are respectively provided with a transverse opening 7-1 which is transversely arranged and corresponds to the transverse opening in position, the push plate 9-1 is clamped in the two groups of transverse openings 7-1, the connecting shaft 9-3 is positioned between the opposite surfaces of the two groups of clamping blocks 7, and the connecting plate 9-2 is positioned on the outer side of the end surfaces of the two groups of clamping blocks 7.
A screw 12 is fixedly connected to the connecting plate 9-2, and the screw 12 and the pre-tightening block 9 are coaxially arranged; the screw 12 penetrates through the clamp body 11 and is in threaded connection with the clamp body 11, an adjusting handle 13 is fixedly connected to the outer end portion of the screw 12, the push plate 9-1 is adjusted to move up and down by rotating the adjusting handle 13, and the distance between the clamping blocks 7 is increased or decreased under the action of the positioning sliding groove 5-1.
The outer end part of the adjusting handle 13 is rotatably connected with a connector 14 through a rolling bearing, and the connector 14 is connected with a tensile testing machine; the connector 14 is cylindrical, and a connecting transverse hole 14-1 used for being connected with a tensile testing machine is formed in the connector 14.
The front side surfaces of the clamping block 7 and the U-shaped mounting block 10 are provided with a pressing plate 1 connected with the U-shaped mounting block 10. The concrete connection mode is as follows: the pressing plate 1 is provided with a transverse waist-shaped hole 2 which is transversely arranged, and the pressing plate 1 is detachably connected with the U-shaped mounting block 10 through a fastening bolt which is arranged in the transverse waist-shaped hole 2 in a penetrating manner and a fastening nut on the fastening bolt.
In order to improve the running stability of the clamping block 7 along the positioning sliding chute 5-1, the two groups of pressing plates 1 are respectively provided with an oblique waist-shaped hole 4, and the extension direction of the oblique waist-shaped hole 4 is consistent with that of the corresponding positioning sliding chute 5-1; the front side surface of the clamping block 7 is fixedly connected with a sliding column 3 extending into the oblique waist-shaped hole 4.
The working process is as follows: according to the size specification of a sample, selecting a proper clamping block 7, aligning the clamping block 7 with a positioning chute 5-1 for installation, rotating an adjusting handle 13 after the sample is placed, moving the clamping block 7 downwards under the pressure action of a push plate 9-1, and reducing the distance between clamping surfaces of the two clamping blocks 7 under the action of the positioning chute 5-1 so as to clamp the sample; the distance between two sets of locating pieces 5 is adjusted to staff's accessible adjusting bolt 8 to make this anchor clamps can carry out firm centre gripping to the great sample of size.
Claims (6)
1. The utility model provides a anchor clamps for reinforcing bar tensile test machine which characterized by: the clamp comprises a clamp body (11), wherein two groups of U-shaped mounting blocks (10) with opposite openings are fixedly connected to the front surface of the clamp body (11), and positioning blocks (5) are detachably connected in the openings of the two groups of U-shaped mounting blocks (10) through adjusting bolts (8); positioning sliding grooves (5-1) which obliquely extend towards the U-shaped mounting block (10) from bottom to top are formed in the front side faces of the two groups of positioning blocks (5), and the two groups of positioning sliding grooves (5-1) are symmetrically arranged; clamping blocks (7) capable of sliding along the positioning sliding grooves (5-1) are arranged on the positioning blocks (5), and opposite surfaces of the two groups of clamping blocks (7) can clamp the reinforcing steel bars; a pre-tightening block (9) is arranged between the two groups of clamping blocks (7), one end of the pre-tightening block (9) is movably connected with the two groups of clamping blocks (7), the other end of the pre-tightening block is fixedly connected with a screw rod (12), and the screw rod (12) and the pre-tightening block (9) are coaxially arranged; the screw rod (12) penetrates through the clamp body (11) and is in threaded connection with the clamp body (11), an adjusting handle (13) is fixedly connected to the outer end portion of the screw rod (12), a connector (14) is rotatably connected to the outer end portion of the adjusting handle (13) through a rolling bearing, and the connector (14) is connected with the tensile testing machine; the front side surfaces of the clamping block (7) and the U-shaped mounting block (10) are provided with a pressing plate (1) connected with the U-shaped mounting block (10).
2. The jig for a reinforcing bar tensile testing machine according to claim 1, wherein: the pre-tightening block (9) comprises a push plate (9-1) and a connecting plate (9-2) which are arranged in parallel, and a connecting shaft (9-3) which is arranged vertically to the push plate (9-1) and the connecting plate (9-2) is fixedly connected between the push plate (9-1) and the connecting plate (9-2); the opposite surfaces of the two groups of clamping blocks (7) are respectively provided with transverse openings (7-1) which are transversely arranged and correspond in position, the push plates (9-1) are clamped in the two groups of transverse openings (7-1), the connecting shafts (9-3) are positioned between the opposite surfaces of the two groups of clamping blocks (7), and the connecting plates (9-2) are positioned on the outer sides of the end surfaces of the two groups of clamping blocks (7).
3. The jig for a reinforcing bar tensile testing machine according to claim 1, wherein: the opposite surfaces of the two groups of clamping blocks (7) are planes with saw-tooth grooves or V-shaped surfaces with saw-tooth grooves.
4. The jig for a reinforcing bar tensile testing machine according to claim 1, wherein: the opposite surfaces of the two groups of clamping blocks (7) can be detachably connected with clamp blocks (6), and the opposite surfaces of the clamp blocks (6) are planes with saw-tooth grooves or V-shaped surfaces with saw-tooth grooves.
5. The jig for a reinforcing bar tensile testing machine according to claim 1, wherein: oblique waist-shaped holes (4) are formed in the two groups of pressing plates (1), and the extending direction of the oblique waist-shaped holes (4) is consistent with the extending direction of the corresponding positioning sliding chutes (5-1); a sliding column (3) extending into the oblique waist-shaped hole (4) is fixedly connected to the front side surface of the clamping block (7); the U-shaped mounting block is characterized in that a transverse waist-shaped hole (2) which is transversely arranged is formed in the pressing plate (1), and the pressing plate (1) is detachably connected with the U-shaped mounting block (10) through a fastening bolt which is arranged in the transverse waist-shaped hole (2) in a penetrating mode and a fastening nut on the fastening bolt.
6. the jig for a reinforcing bar tensile testing machine according to claim 1, wherein: the connector (14) is cylindrical, and a connecting transverse hole (14-1) used for being connected with a tensile testing machine is formed in the connector (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574415.8U CN209802844U (en) | 2019-04-25 | 2019-04-25 | Clamp for steel bar tensile testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920574415.8U CN209802844U (en) | 2019-04-25 | 2019-04-25 | Clamp for steel bar tensile testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209802844U true CN209802844U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920574415.8U Active CN209802844U (en) | 2019-04-25 | 2019-04-25 | Clamp for steel bar tensile testing machine |
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| CN (1) | CN209802844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504775A (en) * | 2020-06-04 | 2020-08-07 | 西安建筑科技大学 | Adjustable claw type concrete uniaxial tensile test clamp and using method thereof |
-
2019
- 2019-04-25 CN CN201920574415.8U patent/CN209802844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504775A (en) * | 2020-06-04 | 2020-08-07 | 西安建筑科技大学 | Adjustable claw type concrete uniaxial tensile test clamp and using method thereof |
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