CN215374875U - Reinforcing bar tensile test device - Google Patents
Reinforcing bar tensile test device Download PDFInfo
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- CN215374875U CN215374875U CN202121238567.4U CN202121238567U CN215374875U CN 215374875 U CN215374875 U CN 215374875U CN 202121238567 U CN202121238567 U CN 202121238567U CN 215374875 U CN215374875 U CN 215374875U
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Abstract
The utility model provides a reinforcing steel bar tensile test device which comprises a base, a sliding seat, two hydraulic cylinders and two clamping mechanisms, wherein the sliding seat is arranged on the base; a plurality of sliding rods are distributed on the base in an array manner; the sliding seat is connected with the sliding rods in a vertical sliding mode, through holes suitable for the steel bars to pass through are formed in the sliding seat, and the through holes are located in the center of an area defined by the sliding rods; the two hydraulic cylinders are symmetrically distributed by taking the through hole as a center, the fixed ends of the hydraulic cylinders are fixedly connected with the base, and the telescopic ends are fixedly connected with the sliding seat; two clamping mechanism locate base and slide respectively on, two clamping mechanism's clamping end all aligns from top to bottom with the through-hole, and clamping mechanism's clamping end is for using the axis of through-hole as a plurality of jack catchs of central circumference equipartition, and a plurality of jack catchs slide and press from both sides tightly or loosen the reinforcing bar along the radial synchronization of through-hole respectively. The reinforcing steel bar tensile test device is suitable for carrying out tensile tests on reinforcing steel bars with different diameters, and the test process is stable and efficient.
Description
Technical Field
The utility model belongs to the technical field of building material detection, and particularly relates to a reinforcing steel bar tensile test device.
Background
In the field of building material detection, a steel bar tensile test is a conventional detection content, and the bonding strength between the steel bar and concrete can be judged by applying axial tension to the steel bar. At present, a hydraulic loading stretching mode is mostly adopted in a steel bar stretching test, and the steel bar needs to bear axial tension, so that two ends of the steel bar need to be reliably fixed; in addition, as the semi-arc grooves with different inner diameters are formed in the same clamping block, the mode of a steel bar tensile test with different diameters is matched, and the relative positions of the steel bar clamping devices and the hydraulic loading mechanism in the different semi-arc grooves are different, so that the condition that each position can be consistent with the force application axis of the loading mechanism cannot be guaranteed, the stress deflection of the loading mechanism during the test can be caused, the test result is influenced, and the loading mechanism is easy to damage.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a reinforcing steel bar tensile test device, and aims to solve the problems of low efficiency and poor reliability when reinforcing steel bars with different diameters are subjected to tensile test.
In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a reinforcing bar tensile test device, including:
the top surface of the base is distributed with a plurality of slide bars which vertically extend upwards in an array manner;
the sliding seat is provided with a plurality of sliding holes which respectively correspond to the positions of the sliding rods, the sliding holes are connected with the sliding rods in a vertical sliding mode, the sliding seat is provided with through holes suitable for the steel bars to pass through vertically, and the through holes are located in the center of an area defined by the sliding rods;
the two hydraulic cylinders are symmetrically distributed by taking the through hole as a center, the fixed ends of the hydraulic cylinders are fixedly connected with the base, and the telescopic ends of the hydraulic cylinders are fixedly connected with the sliding seat;
two clamping mechanism locate base and slide respectively on, two clamping mechanism's clamping end all aligns from top to bottom with the through-hole, and clamping mechanism's clamping end is for using the through-hole as a plurality of jack catchs of central circumference equipartition, and a plurality of jack catchs slide and press from both sides tightly or loosen the reinforcing bar along the radial synchronization of through-hole respectively.
In one possible implementation, the clamping mechanism includes:
the disc type clamp is fixedly connected with the base or the sliding seat, and the center of the disc type clamp is vertically aligned with the through hole; the plurality of clamping jaws are respectively connected to the disc clamp in a sliding manner along the radial direction of the disc clamp;
and the driving assembly is arranged on the base or the sliding seat, is connected with the disc type clamp and is used for driving the clamping jaws to synchronously slide.
In some embodiments, a disc clamp comprises:
the fixed disc is fixedly connected to the base or the sliding seat;
the guide disc is fixedly connected to the fixed disc, a round hole vertically aligned with the through hole is formed in the center of the guide disc, a plurality of T-shaped grooves are distributed on the guide disc at intervals along the circumferential direction of the guide disc, the T-shaped grooves extend from the circumferential wall of the guide disc to be communicated with the round hole along the radial direction of the guide disc, a clamping jaw is connected in each T-shaped groove in a sliding mode, and one end of each clamping jaw extends into the round hole;
the driving disc is connected between the guide disc and the fixed disc in a rotating mode, is connected with each clamping jaw respectively and is connected with the output end of the driving assembly, and the driving disc is used for rotating under the driving of the driving assembly so as to drive each clamping jaw to slide along the radial direction of the guide disc synchronously.
Illustratively, the surface of the driving disk facing the guide disk is provided with spiral teeth, and the side wall of the claw facing the fixed disk is provided with teeth suitable for being meshed with the spiral teeth.
In some embodiments, the surface of the driving disk facing the fixed disk is fixedly connected with a gear ring, and the gear ring is vertically aligned with the through hole; the part of the fixed disc close to the edge is rotatably connected with a gear, and the gear is meshed with the gear ring and is connected with the output end of the driving assembly.
Specifically, the drive assembly includes:
the rack is connected to the base or the sliding seat in a sliding manner and is meshed with the gear;
the telescopic driving piece is arranged on the base or the sliding seat along the axial direction of the rack, and the output end of the telescopic driving piece is connected with the rack.
For example, the base or the sliding seat is provided with a sliding groove extending along the interval direction of the two hydraulic cylinders, the rack is connected in the sliding groove in a sliding manner, and one end of the rack extends out of the sliding groove and is connected with the output end of the telescopic driving piece.
In a possible implementation mode, a controller is arranged on the base, and the controller is electrically connected with the clamping mechanism and the electromagnetic valves of the two hydraulic cylinders respectively.
The reinforcing steel bar tensile test device provided by the utility model has the beneficial effects that: compared with the prior art, the reinforcing steel bar tensile test device has the advantages that when the clamping mechanisms are loosened, the reinforcing steel bars can sequentially penetrate into the clamping ends of the two clamping mechanisms from the through holes on the sliding seat downwards, the clamping claws synchronously slide along the radial direction of the through holes to clamp the end walls of the reinforcing steel bars, the reinforcing steel bars are convenient to install, the clamping force is stable and reliable, the two hydraulic cylinders simultaneously drive the sliding seat to slide upwards along the sliding rod, so as to carry out tensile test on the reinforcing steel bar, reinforcing steel bars with different diameters can be clamped by the plurality of clamping jaws sliding along the radial direction of the through hole without dismounting and replacing the clamp, therefore, the efficiency of the tensile test on the reinforcing steel bars with different diameters can be improved, the reinforcing steel bars can be always concentric with the through hole after being clamped, the two hydraulic cylinders which are symmetrically distributed by taking the through hole as the center can always apply balanced and stable tensile force to the steel bar, and the tensile test is ensured to be stable and reliable.
Drawings
Fig. 1 is a schematic front view of a reinforcing steel bar tensile test apparatus according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a reinforcing steel bar tensile test apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a clamping mechanism used in an embodiment of the present invention;
fig. 4 is an exploded view of a disc clamp used in an embodiment of the present invention.
In the figure: 1. a base; 10. a slide bar; 11. a chute; 2. a slide base; 20. a through hole; 3. a hydraulic cylinder; 4. a clamping mechanism; 41. a disc clamp; 410. a claw; 4101. teeth; 411. fixing the disc; 4120. a circular hole; 4121. a T-shaped groove; 412. a guide plate; 413. a drive disc; 4131. a scroll-type tooth; 4132. a ring gear; 42. a drive assembly; 421. a rack; 422. a telescopic driving member; 43. a gear; 5. a controller; 6. and (5) reinforcing steel bars.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 and fig. 2 together, a reinforcing bar tensile testing apparatus according to the present invention will now be described. The reinforcing steel bar tensile test device comprises a base 1, a sliding seat 2, two hydraulic cylinders 3 and two clamping mechanisms 4; wherein, a plurality of slide bars 10 extending vertically upwards are distributed on the top surface array of the base 1; a plurality of sliding holes corresponding to the positions of the sliding rods 10 are formed in the sliding seat 2, the sliding holes are connected with the sliding rods 10 in a vertical sliding mode, through holes 20 suitable for the steel bars 6 to pass through are formed in the sliding seat 2, and the through holes 20 are located in the center of an area defined by the sliding rods 10; the two hydraulic cylinders 3 are symmetrically distributed by taking the through hole 20 as a center, the fixed ends of the hydraulic cylinders 3 are fixedly connected with the base 1, and the telescopic ends are fixedly connected with the sliding seat 2; two clamping mechanism 4, locate base 1 and slide 2 respectively on, the clamping end of two clamping mechanism 4 all aligns from top to bottom with through-hole 20, and the clamping end of clamping mechanism 4 is for using the axis of through-hole 20 as a plurality of jack catchs 410 of central circumference equipartition, and a plurality of jack catchs 410 slide and press from both sides tightly or unclamp reinforcing bar 6 along the radial synchronization of through-hole 20 respectively.
It should be noted that, when clamping the steel bar 6 to be tested, the clamping mechanism 4 should be in a loose state, that is, the plurality of claws 410 are away from each other along the radial direction of the through hole 20, so that a space capable of allowing the steel bar 6 to smoothly pass through is formed at the central position of the clamping mechanism 4, after one end of the steel bar 6 sequentially passes through the through hole 20 and the upper clamping mechanism 4 and passes through the lower clamping mechanism 4, two clamps are simultaneously or sequentially operated, the end walls close to each other by the plurality of claws 410 are jointly pressed against the side wall of the steel bar 6, so as to cooperate with the peripheral wall of the steel bar 6, since the plurality of claws 410 are circumferentially and uniformly distributed with the through hole 20 as the center, under the condition that the pressing force exerted on the peripheral wall of the steel bar 6 by each claw 410 is consistent, the stress in each direction of the peripheral wall of the steel bar 6 is balanced, and since the plurality of claws 410 (specifically, which can be provided in this embodiment, are provided in a twelve manner of cooperating with the clamping, the end walls of the plurality of clamping claws 410 which are close to each other can enclose a hole pattern close to the peripheral wall of the steel bar 6, so that the contact area with the peripheral wall of the steel bar 6 is increased, and the clamping is stable and reliable.
Compared with the prior art, when the clamping mechanisms 4 are loosened, the steel bars 6 can sequentially penetrate into the clamping ends of the two clamping mechanisms 4 from the through holes 20 on the sliding seat 2, the plurality of clamping jaws 410 can synchronously slide along the radial direction of the through holes 20 to clamp the end walls of the steel bars 6, the installation of the steel bars 6 is convenient, the clamping force is stable and reliable, the sliding seat 2 is driven by the two hydraulic cylinders 3 to slide upwards along the sliding rod 10, so that the steel bars 6 are subjected to tensile test, the steel bars 6 with different diameters can be clamped by the plurality of clamping jaws 410 along the radial direction of the through holes 20, the clamp is not required to be disassembled and replaced, the efficiency of the tensile test on the steel bars 6 with different diameters can be improved, the steel bars can be kept concentric with the through holes 20 all the time after being clamped, and the two hydraulic cylinders 3 which are symmetrically distributed by taking the through holes 20 as centers can always apply balanced and stable tensile force to the steel bars 6, ensuring the stability and reliability of the tensile test.
In one possible implementation, referring to fig. 2 and 3, the clamping mechanism 4 includes a disc clamp 41 and a driving assembly 42; wherein, the disc type clamp 41 is fixedly connected with the base 1 or the sliding seat 2, and the center of the disc type clamp is vertically aligned with the through hole 20; the plurality of claws 410 are slidably connected to the disc jig 41 in the radial direction of the disc jig 41, respectively; the driving assembly 42 is disposed on the base 1 or the sliding base 2, and connected to the disc clamp 41, for driving the plurality of clamping jaws 410 to slide synchronously. The disc type clamp 41 is a clamp which converts circular motion into synchronous linear motion of a plurality of parts, namely the clamping jaws 410, and the driving assembly 42 is arranged to drive internal components of the disc type clamp 41 to generate rotary motion, so that the clamping jaws 410 are driven to synchronously slide along the radial direction of the through hole 20, clamping or loosening action is realized, and the clamping is convenient and reliable.
In the present embodiment, referring to fig. 2 to 4, the disc clamp 41 includes a fixing disc 411, a guiding disc 412, and a driving disc 413; wherein, the fixed disc 411 is fixedly connected to the base 1 or the sliding seat 2; the guide disc 412 is fixedly connected to the fixed disc 411, a round hole 4120 aligned with the through hole 20 up and down is formed in the center of the guide disc 412, a plurality of T-shaped grooves 4121 are distributed on the guide disc 412 at intervals along the circumferential direction of the guide disc 412, the T-shaped grooves 4121 extend from the circumferential wall of the guide disc 412 to be communicated with the round hole 4120 along the radial direction of the guide disc 412, each T-shaped groove 4121 is connected with one clamping jaw 410 in a sliding mode, and one end of each clamping jaw 410 extends into the round hole 4120; the driving disc 413 is rotatably connected between the guiding disc 412 and the fixed disc 411, is connected to each of the claws 410, and is connected to the output end of the driving assembly 42, and the driving disc 413 is driven by the driving assembly 42 to rotate, so as to drive each of the claws 410 to synchronously slide along the radial direction of the guiding disc 412. Specifically, the disk surface of the driving disk 413 facing the guiding disk 412 is provided with spiral teeth 4131, and the side wall of the claw 410 facing the fixed disk 411 is provided with teeth 4101 suitable for meshing with the spiral teeth 4131.
When the reinforcing steel bars 6 are clamped or loosened, the driving disc 413 is driven to rotate by the driving assembly 42, and the driving disc 413 rotates by utilizing the meshing transmission action of the spiral teeth 4131 and the teeth 4101 on each claw 410, so that each claw 410 slides towards or away from the center of the circular hole 4120 in the corresponding T-shaped groove 4121 respectively, and it should be understood that the teeth 4101 on a plurality of claws 410 are taken as tooth sections which are integrally matched with the spiral teeth 4131, that is, the teeth 4101 on each claw 410 are combined into a whole and are also in a spiral shape matched with the tooth shape of the spiral teeth 4131, and when the driving disc 413 rotates, each claw 410 needs to be correspondingly installed in the corresponding T-shaped groove 4121 to ensure that the sliding action of each claw 410 is smoothly synchronized.
In some embodiments, referring to fig. 4, the disk surface of the driving disk 413 facing the fixed disk 411 is fixedly connected with a ring gear 4132, and the ring gear 4132 is vertically aligned with the through hole 20; the fixed disk 411 is rotatably connected with a gear 43 near the edge, and the gear 43 is meshed with the gear ring 4132 and is connected with the output end of the driving assembly 42. Specifically, the driving assembly 42 includes a rack 421 and a telescopic driving member 422; wherein, the rack 421 is connected to the base 1 or the sliding base 2 in a sliding manner and meshed with the gear 43; the telescopic driving member 422 is disposed on the base 1 or the sliding base 2 along the axial direction of the rack 421, and the output end is connected to the rack 421.
Based on among the test process power supply be hydraulic system, it is flexible hydro-cylinder here to prefer flexible driving piece 422, the flexible end through flexible driving piece 422 drives rack 421 and carries out linear motion, thereby make rack 421 drive gear 43 rotate, and then drive-disc 413 rotates, realize the synchronous clamp of each jack catch 410 or relax the action, the transmission is steady, and the linear motion through flexible driving piece 422 is as the driving source, compare in the mode that adopts rotary motion (like motor or motor) as the driving source, the structure is more simple and stable, can guarantee sufficient drive power, thereby ensure that reinforcing bar 6 presss from both sides tightly reliably.
For example, referring to fig. 1, the base 1 or the sliding base 2 is provided with a sliding slot 11 extending along the spacing direction of the two hydraulic cylinders 3, the rack 421 is slidably connected in the sliding slot 11, and one end of the rack extends out of the sliding slot 11 and is connected with the output end of the telescopic driving member 422. The sliding chute 11 can adopt a lying convex structure with an opening on the side surface, the rack 421 is slidably arranged in the sliding chute 11, the tooth surface of the.
In a possible implementation manner, referring to fig. 1, a controller 5 is disposed on the base 1, and the controller 5 is electrically connected to the clamping mechanism 4 and the electromagnetic valves of the two hydraulic cylinders 3, respectively. The operation of the clamping mechanism 4 and the two hydraulic cylinders 3 is controlled by the operation buttons on the controller 5, the operation is convenient and efficient, it is understood that the controller 5 is realized by connecting electric control parts related to the clamping mechanism 4 or the hydraulic cylinders 3, such as electromagnetic valves of the hydraulic cylinders 3, and power elements for providing driving force are arranged on the clamping mechanism 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a reinforcing bar tensile test device which characterized in that includes:
the top surface of the base is distributed with a plurality of slide bars which vertically extend upwards in an array manner;
the sliding seat is provided with a plurality of sliding holes which respectively correspond to the positions of the sliding rods, the sliding holes are connected with the sliding rods in a vertical sliding mode, the sliding seat is provided with through holes suitable for the steel bars to pass through vertically, and the through holes are located in the center of an area defined by the sliding rods;
the two hydraulic cylinders are symmetrically distributed by taking the through hole as a center, the fixed ends of the hydraulic cylinders are fixedly connected with the base, and the telescopic ends of the hydraulic cylinders are fixedly connected with the sliding seat;
two clamping mechanism locate respectively the base with on the slide, two clamping mechanism's clamping end all with the through-hole aligns from top to bottom, clamping mechanism's clamping end be for with the through-hole is a plurality of jack catchs of central circumference equipartition, and is a plurality of the jack catch is followed respectively the radial synchronous slip of through-hole presss from both sides tightly or unclamps the reinforcing bar.
2. The bar tensile testing apparatus of claim 1, wherein the clamping mechanism comprises:
the disc clamp is fixedly connected with the base or the sliding seat, and the center of the disc clamp is vertically aligned with the through hole; the clamping jaws are connected to the disc clamp in a sliding mode in the radial direction of the disc clamp respectively;
and the driving assembly is arranged on the base or the sliding seat, is connected with the disc type clamp and is used for driving the clamping jaws to synchronously slide.
3. A reinforcing bar tensile testing apparatus as set forth in claim 2, wherein said disc clamp includes:
the fixed disc is fixedly connected to the base or the sliding seat;
the guide disc is fixedly connected to the fixed disc, a round hole vertically aligned with the through hole is formed in the center of the guide disc, a plurality of T-shaped grooves are distributed on the guide disc at intervals along the circumferential direction of the guide disc, the T-shaped grooves extend from the circumferential wall of the guide disc to be communicated with the round hole along the radial direction of the guide disc, each T-shaped groove is connected with one clamping jaw in a sliding mode, and one end of each clamping jaw extends into the round hole;
the driving disc is connected between the guide disc and the fixed disc in a rotating mode, is connected with the clamping jaws respectively and is connected with the output end of the driving assembly, and the driving disc is used for rotating under the driving of the driving assembly so as to drive the clamping jaws to slide along the radial direction of the guide disc synchronously.
4. The reinforcing bar tensile testing apparatus of claim 3, wherein the disk surface of the driving disk facing the guiding disk is provided with spiral teeth, and the side wall of the claw facing the fixed disk is provided with teeth suitable for meshing with the spiral teeth.
5. The reinforcing bar tensile test device of claim 3, wherein a gear ring is fixedly connected to the surface of the driving disc facing the fixed disc, and the gear ring is vertically aligned with the through hole; the part of the fixed disc close to the edge is rotatably connected with a gear, and the gear is meshed with the gear ring and is connected with the output end of the driving assembly.
6. The reinforcing bar tensile testing apparatus of claim 5, wherein the driving assembly comprises:
the rack is connected to the base or the sliding seat in a sliding mode and meshed with the gear;
the telescopic driving piece is arranged on the base or the sliding seat along the axial direction of the rack, and the output end of the telescopic driving piece is connected with the rack.
7. The reinforcing bar tensile testing apparatus of claim 6, wherein the base or the sliding base is provided with a sliding slot extending along a direction of spacing between the two hydraulic cylinders, the rack is slidably connected in the sliding slot, and one end of the rack extends out of the sliding slot and is connected with the output end of the telescopic driving member.
8. The reinforcing bar tensile test device of any one of claims 1 to 7, wherein a controller is arranged on the base, and the controller is electrically connected with the clamping mechanism and the electromagnetic valves of the two hydraulic cylinders respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121238567.4U CN215374875U (en) | 2021-06-03 | 2021-06-03 | Reinforcing bar tensile test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121238567.4U CN215374875U (en) | 2021-06-03 | 2021-06-03 | Reinforcing bar tensile test device |
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| CN215374875U true CN215374875U (en) | 2021-12-31 |
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| CN202121238567.4U Active CN215374875U (en) | 2021-06-03 | 2021-06-03 | Reinforcing bar tensile test device |
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| CN (1) | CN215374875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389311A (en) * | 2022-09-05 | 2022-11-25 | 江苏新扬新材料股份有限公司 | Self-centering clamp for micro composite material tensile test |
-
2021
- 2021-06-03 CN CN202121238567.4U patent/CN215374875U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389311A (en) * | 2022-09-05 | 2022-11-25 | 江苏新扬新材料股份有限公司 | Self-centering clamp for micro composite material tensile test |
| CN115389311B (en) * | 2022-09-05 | 2023-09-19 | 江苏新扬新材料股份有限公司 | Clamp capable of automatically centering for mini-type composite material tensile test |
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