CN214277724U - Reinforcing bar pulling force check out test set - Google Patents
Reinforcing bar pulling force check out test set Download PDFInfo
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- CN214277724U CN214277724U CN202022935497.XU CN202022935497U CN214277724U CN 214277724 U CN214277724 U CN 214277724U CN 202022935497 U CN202022935497 U CN 202022935497U CN 214277724 U CN214277724 U CN 214277724U
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Abstract
The utility model relates to a reinforcing bar pulling force check out test set, relate to the field of experimental facilities, which comprises a frame, fixedly connected with supports the guide post in the frame, support the one end fixedly connected with footstock that the frame was kept away from to the guide post, be provided with anchor clamps on the footstock, it is connected with the base to slide along the length direction of self on the support guide post, be provided with automatic regulating mechanism on the base, automatic regulating mechanism includes lower anchor clamps seat, be provided with down anchor clamps on the anchor clamps seat down, upward be provided with the centre gripping groove on the anchor clamps, be provided with down the centre gripping groove on the anchor clamps down, the length direction in last centre gripping groove is parallel with the length direction in centre gripping groove down, the length direction and the base in centre gripping groove slide down along lower anchor clamps seat are connected. The length direction of the reinforcing steel bar can be automatically and gradually adjusted to be parallel to the sliding direction of the base, so that the measurement precision of the reinforcing steel bar tension detection equipment is improved, and the construction hidden danger is reduced; meanwhile, the labor intensity of operators can be reduced, and the detection efficiency is improved.
Description
Technical Field
The application relates to the field of experimental equipment, especially, relate to a reinforcing bar pulling force check out test set.
Background
The tension tester is also called a universal material tester. The universal tester is a mechanical stress tester for testing mechanical properties such as static load, tension, compression, bending, shearing, tearing and peeling of instruments and equipment for various materials, is suitable for testing various physical and mechanical properties of materials such as plastic plates, pipes, profiled bars, plastic films, rubber, electric wires and cables, steel, glass fibers and the like, is used for material development, and is indispensable detection equipment for physical property testing, teaching research, quality control and the like. In reinforced concrete, the reinforcing steel bars are mainly used for bearing tensile stress, so the tensile property of the reinforcing steel bars needs to be detected before the reinforced concrete is poured.
The existing reinforcing steel bar tension detection equipment mainly comprises a top seat, a base and a driving device, wherein an upper clamp is arranged on the top seat, a lower clamp is arranged on the base, one end of a reinforcing steel bar is clamped by the upper clamp, and the other end of the reinforcing steel bar is clamped by the lower clamp. After the reinforcing steel bar is clamped, the driving device drives the base to slide towards the direction far away from the top seat, and at the moment, tensile stress can be applied to the reinforcing steel bar.
In view of the above-mentioned related technologies, the inventor believes that, when the reinforcing steel bar is clamped by the upper clamp and the lower clamp, the problem of low parallelism between the length direction of the reinforcing steel bar and the sliding direction of the base occurs, so that the sectional area of the reinforcing steel bar in the sliding direction of the base is larger than the sectional area of the reinforcing steel bar in the length direction, the tensile strength of the reinforcing steel bar measured by the reinforcing steel bar tensile force detection equipment is larger than the actual tensile strength of the reinforcing steel bar, and potential safety hazards are buried for construction.
SUMMERY OF THE UTILITY MODEL
In order to improve the length direction of reinforcing bar and the depth of parallelism of base direction of sliding, and then reduce the construction hidden danger, this application provides a reinforcing bar pulling force check out test set.
The application provides a reinforcing bar pulling force check out test set adopts following technical scheme:
the utility model provides a reinforcing bar pulling force check out test set, includes the frame, fixedly connected with supports the guide post in the frame, support the guide post the one end fixedly connected with footstock of keeping away from the frame, be provided with anchor clamps on the footstock, it slides along the length direction of self to be connected with the base on the support guide post, be provided with automatically regulated mechanism on the base, automatically regulated mechanism includes anchor clamps seat down, be provided with down anchor clamps on the anchor clamps seat down, upward be provided with the centre gripping groove on the anchor clamps, be provided with down the centre gripping groove on the anchor clamps down, the length direction who goes up the centre gripping groove with the length direction in centre gripping groove is parallel down, the anchor clamps seat is followed down the length direction in centre gripping groove with the base slides and is connected.
By adopting the technical scheme, after the upper clamp and the lower clamp the reinforcing steel bar, the base slides towards the direction far away from the top seat, and the length direction of the reinforcing steel bar is not parallel to the sliding direction of the base, so that torsion moments can be generated between the reinforcing steel bar and the upper clamp and between the reinforcing steel bar and the lower clamp; because the base when sliding towards the direction of keeping away from the footstock, the sliding block alright with remove by oneself, reduced operating personnel's intensity of labour, improved detection efficiency.
Optionally, the automatic regulating mechanism further comprises a sliding block, the sliding block is connected with the base in a sliding manner along the length direction of the supporting guide stand column, the lower clamp seat is connected with the sliding block in a sliding manner along the length direction of the lower clamping groove, the automatic regulating mechanism further comprises an anti-slip block, the anti-slip block is fixedly connected to the base, and the anti-slip block can penetrate through the sliding block and is abutted to the lower clamp seat.
By adopting the technical scheme, when an experimenter places a steel bar on the lower clamp, the sliding block slides towards one end far away from the upper clamp under the action of self gravity, and the anti-sliding block passes through the sliding block and abuts against the lower clamp seat, so that the lower clamp seat is not easy to slide relative to the sliding block, and the experimenter can place the steel bar on the lower clamp; when the base slides towards the direction of keeping away from the footstock, the sliding block slides towards the one end of keeping away from the frame at the pulling effect of reinforcing bar, and the non slipping spur no longer with lower anchor clamps seat butt this moment, lower anchor clamps seat alright with the sliding block emergence relative slip.
Optionally, one end of the anti-slip block close to the lower clamp seat is fixedly connected with a rubber gasket, and the rubber gasket can be abutted to the lower clamp seat.
By adopting the technical scheme, when an experimenter places a steel bar on the lower clamp, the rubber gasket is abutted against the lower clamp seat, so that the lower clamp seat is more difficult to slide relative to the sliding block, and the experimenter can place the steel bar on the lower clamp conveniently; simultaneously when the reinforcing bar is broken by the stretch-breaking, the sliding block just can slide towards the base, and the setting of rubber gasket can cushion the impact force between non slipping spur and the lower fixture seat, has reduced the lower fixture seat and has warp and then can't take place relative slip's probability with the sliding block.
Optionally, the sliding block and/or the lower clamp seat are fixedly connected with a graphite sliding block, and the graphite sliding block is connected with the sliding block and the lower clamp seat.
Through adopting above-mentioned technical scheme, the graphite sliding block can reduce the frictional force between sliding block and the lower anchor clamps seat, and when producing torsional moment between anchor clamps and the reinforcing bar down, the anchor clamps seat and sliding block produce relative slip under being convenient for, improve the length direction of reinforcing bar and the depth of parallelism of the slip direction of base, and then improve reinforcing bar pulling force check out test set measuring precision.
Optionally, the first stopper of the equal fixedly connected with in both ends of lower clamp seat slip direction, first stopper can with the sliding block butt.
Through adopting above-mentioned technical scheme, when base and footstock slided mutually, lower anchor clamps seat is difficult for deviating from the sliding block because of the torsional moment between lower anchor clamps and the reinforcing bar, has improved tensile test's security.
Optionally, a damping mechanism for reducing the impact of the sliding block on the base is further disposed on the base.
By adopting the technical scheme, when the steel bar is broken, the damping mechanism can reduce the impact force of the sliding block on the base, and the probability of the sliding block being damaged is reduced; meanwhile, the impact force of the anti-skid block on the lower clamp seat can be reduced, and the probability of damage of the lower clamp seat is reduced.
Optionally, the damping mechanism includes a piston, a piston rod, a first oil cylinder and a second oil cylinder, axial directions of the piston, the piston rod, the first oil cylinder and the second oil cylinder are all parallel to a sliding direction of the sliding block, one end of the piston rod is fixedly connected with the sliding block, the other end of the piston rod is fixedly connected with the piston, the piston is arranged in the first oil cylinder in a penetrating manner, the piston divides the first oil cylinder into a first oil cavity and a second oil cavity, the second oil cavity is arranged at one end of the piston far away from the piston cylinder, the first oil cylinder is arranged in the second oil cylinder in a penetrating manner, the second oil cylinder is fixedly connected with the base, a third oil cavity is formed between the first oil cylinder and the second oil cylinder, a first through hole is arranged on the piston, the first through hole is communicated with the first oil cavity and the second oil cavity, and a second through hole is arranged on the first oil cylinder, the second through hole is communicated with the second oil cavity and the third oil cavity, and hydraulic oil is filled in the first oil cavity, the second oil cavity and the third oil cavity.
By adopting the technical scheme, in an initial state, the piston is positioned at one end, far away from the sliding block, of the first oil cylinder, when the steel bar is pulled, the piston slides to one end, close to the sliding block, of the first oil cylinder, when the steel bar is pulled to be broken, the sliding block suddenly loses tension, at the moment, the piston slides towards one end, far away from the sliding block, the volume of the first oil cavity is gradually increased, the volume of the second oil cavity is gradually reduced, part of hydraulic oil flows from the second oil cavity to the first oil cavity through the first through hole, part of hydraulic cylinders flows from the second oil cavity to the third oil cavity through the second through hole, and the first through hole and the second through hole limit the flowing speed of the lubricating oil, so that when the steel bar is pulled to be broken, the speed of the sliding block colliding with the base is reduced, the impact force of the sliding block on the base is reduced, and the probability of the sliding block and the lower clamp base being damaged is reduced.
Optionally, a vent hole is further formed in the upper end of the second oil cylinder, and the vent hole is communicated with the third oil cavity and is communicated with the atmosphere.
By adopting the technical scheme, when the quantity of the lubricating oil in the third oil chamber changes, the air hole can exchange the air in the third oil chamber with the air in the atmosphere, so that the lubricating oil can flow from the first oil chamber, the second oil chamber and the third oil chamber conveniently.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the lower clamp seat, the lower clamp seat is connected with the base in a sliding manner along the length direction of the lower clamping groove, when the lower clamp and the upper clamp pull the steel bar, the length direction of the steel bar can be automatically and gradually adjusted to be parallel to the sliding direction of the base, so that the measurement precision of the steel bar tension detection equipment is improved, and the construction hidden danger is reduced; meanwhile, the reinforcing steel bars can be automatically adjusted, so that the labor intensity of operators is reduced, and the detection efficiency is improved.
2. Through the setting of non slipping spur, when the laboratory technician places the reinforcing bar on the anchor clamps downwards, the non slipping spur butt is on anchor clamps seat down for the anchor clamps seat is difficult to take place relative slip with the sliding block down, and the laboratory technician of being convenient for places the reinforcing bar on anchor clamps down.
3. Through the arrangement of the damping mechanism, when the steel bar is broken, the impact force of the sliding block on the base can be reduced, so that the probability that the sliding block is damaged by the impact force is reduced; meanwhile, the impact force of the anti-skid block on the lower clamp seat can be reduced, so that the probability that the lower clamp seat is damaged by the impact force is reduced.
Drawings
Fig. 1 is a schematic view of an overall structure of a reinforcing bar tension detecting apparatus in the related art;
fig. 2 is a schematic view of the overall structure of a reinforcing bar tension detecting apparatus according to an embodiment of the present invention;
FIG. 3 is a front view of a portion of the structure at the base in an embodiment of the present application;
FIG. 4 is a cross-sectional view at the cleat of FIG. 3;
FIG. 5 is a cross-sectional schematic view of the damping mechanism of FIG. 3;
fig. 6 is an enlarged schematic view of a portion a in fig. 5.
Description of reference numerals: 100. a frame; 110. supporting a guide upright post; 120. a top seat; 130. a base; 131. a chute; 132. a second limiting block; 140. a lead screw; 150. an upper clamp; 151. an upper clamping groove; 160. a lower clamp; 161. a lower clamping groove; 200. an automatic adjustment mechanism; 210. a lower clamp base; 211. a first stopper; 220. a slider; 230. anti-skid blocks; 240. a rubber gasket; 250. a graphite slider; 300. a damping mechanism; 310. a piston; 311. a first through hole; 320. a piston rod; 330. a first cylinder; 331. a second through hole; 340. a second cylinder; 341. a vent hole; 350. a first oil chamber; 360. a second oil chamber; 370. and a third oil chamber.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
Referring to fig. 1, in the related art, a reinforcing steel bar tension detecting apparatus includes a frame 100, a plurality of supporting and guiding columns 110 are vertically disposed on the frame 100, top ends of the supporting and guiding columns 110 are fixedly connected with a top seat 120 through bolts, and a base 130 is slidably connected to an upper edge of the supporting and guiding columns 110 along an axial direction thereof. The top base 120 is provided with an upper clamping jaw for clamping a steel bar, and the base 130 is provided with a lower clamping jaw for clamping a steel bar. The base 130 is driven by the lead screw 140 to slide, the axial direction of the lead screw 140 is parallel to the axial direction of the support guide upright post 110, one end of the lead screw 140 is rotatably connected to the rack 100 along the self axis, the other end of the lead screw 140 is rotatably connected to the top base 120 along the self axis, and the base 130 is in threaded connection with the lead screw 140.
When a tension test of the steel bar is performed, the upper clamping jaw and the lower clamping jaw are firstly used for clamping two ends of the steel bar in the length direction respectively, then the screw rod 140 is driven to rotate by the driving device (not shown in the figure), and the screw rod 140 drives the base 130 to slide downwards so as to pull the steel bar.
However, when the reinforcing steel bars are installed on the upper clamping jaw and the lower clamping jaw, the problem that the parallelism between the length direction of the reinforcing steel bars and the sliding direction of the base 130 is low is easily caused due to installation errors, so that the sectional area of the reinforcing steel bars in the sliding direction of the base 130 is larger than that in the length direction of the reinforcing steel bars. When the tensile strength of reinforcing bar tensile force check out test set measuring reinforcing bar, the tensile strength that the measurement obtained can be greater than the actual tensile strength of reinforcing bar, when using the reinforcing bar construction, the reinforcing bar just is broken easily, buries the potential safety hazard for the construction.
In order to improve the length direction of reinforcing bar and the depth of parallelism of base 130 glide direction, reduce the construction hidden danger, this application embodiment provides a reinforcing bar pulling force check out test set.
Referring to fig. 2 and 3, the reinforcing steel bar tension detecting apparatus includes a frame 100, wherein the frame 100 is provided with a support guide pillar 110, a screw 140, a top seat 120 and a base 130, the top seat 120 is provided with an upper clamp 150, and the base 130 is provided with an automatic adjusting mechanism 200. The automatic adjusting mechanism 200 includes a sliding block 220, an anti-slip block 230 and a lower clamp seat 210, a sliding slot 131 for the sliding block 220 to slide is provided on the base 130, the sliding block 220 is disposed in the sliding slot 131, and the sliding block 220 slides in the sliding slot 131 along the sliding direction of the base 130. The one end that frame 100 was kept away from to base 130 passes through the bolt and can dismantle fixedly connected with second stopper 132, and when sliding block 220 slided to supreme spacing, sliding block 220 and second stopper 132 butt have then reduced the probability that sliding block 220 deviates from spout 131.
Referring to fig. 2 and 3, the lower jig base 210 slides on the sliding block 220, and the lower jig 160 is disposed on the lower jig base 210. The upper jig 150 is formed with an upper holding groove 151, and the lower jig 160 is formed with a lower holding groove 161. The longitudinal direction of the upper clamping groove 151 is parallel to the longitudinal direction of the lower clamping groove 161, and the sliding direction of the lower clamp holder 210 is parallel to the longitudinal direction of the lower clamping groove 161.
Referring to fig. 2 and 4, the length direction of the anti-slip block 230 is parallel to the sliding direction of the sliding block 220, one end of the anti-slip block 230 is fixedly connected to the base 130 through a bolt, the other end of the anti-slip block 230 is inserted into the sliding block 220, and one end of the anti-slip block 230 away from the base 130 is further fixedly connected or bonded with a rubber gasket 240 through a screw. When the sliding block 220 slides in the sliding slot 131 to the end closest to the rack 100, the rubber gasket 240 abuts against the bottom end of the lower clamp seat 210.
When the reinforcing bars are placed on the upper jig 150 and the lower jig 160, the sliding block 220 slides to the end closest to the rack 100 under the action of gravity, and at this time, the rubber gasket 240 abuts against the bottom end of the lower jig base 210. Under the friction action of the rubber gasket 240, the lower fixture seat 210 is not easy to slide relative to the sliding block 220, so that the experimenter can place steel bars on the lower fixture 160.
When the tensile strength of the steel bar is detected, the driving device (not shown in the figure) drives the screw rod 140 to rotate, the screw rod 140 drives the base 130 to slide downwards, at this time, under the pulling action of the steel bar, the sliding block 220 slides towards the direction of the second limiting block 132, and the rubber gasket 240 is disengaged from the bottom end of the lower clamp seat 210. If the length direction of the steel bar is not parallel to the sliding direction of the base 130, a torsion moment is generated between the steel bar and the lower clamp 160, and under the action of the torsion moment, the lower clamp seat 210 automatically slides relative to the sliding block 220 to release the torsion moment, and the steel bar gradually adjusts itself to make the length direction of the steel bar gradually parallel to the length direction of the base 130.
So the reinforcing bar can be close to the ascending sectional area of reinforcing bar self length direction gradually at the ascending sectional area of base 130 slip side, and when the tensile strength of reinforcing bar that reinforcing bar pulling force check out test set measured, the tensile strength that the measurement obtained more is close to the actual tensile strength of reinforcing bar, improves reinforcing bar pulling force check out test set measuring precision. When the steel bar is used for construction, the steel bar is not easy to be broken due to overload, and potential safety hazards during construction are reduced. Meanwhile, the reinforcing steel bars can be automatically adjusted, so that the step of adjusting the direction of the reinforcing steel bars by experimenters is reduced, the labor intensity of operators is reduced, and the detection efficiency is improved.
Referring to fig. 3 and 4, the sliding block 220 and/or the lower fixture seat 210 are fixedly connected with a graphite sliding block 250 through bolts, in the embodiment of the present application, the graphite sliding block 250 is fixedly connected to the lower fixture seat 210, and one end of the graphite sliding block 250 away from the lower fixture seat 210 abuts against the sliding block 220. When the graphite slider 250 is fixedly connected to the sliding block 220, the end of the graphite slider 250 away from the sliding block 220 abuts against the lower jig base 210. When the sliding block 220 is provided with the graphite sliding block 250 and the lower jig base 210 is also provided with the graphite sliding block 250, the end of the graphite sliding block 250 provided on the sliding block 220, which is away from the sliding block 220, abuts against the lower jig base 210, and the end of the graphite sliding block 250 provided on the lower jig base 210, which is away from the lower jig base 210, abuts against the sliding block 220.
The graphite sliding block 250 can reduce the friction force between the sliding block 220 and the lower clamp holder 210, and the lower clamp holder 210 and the sliding block 220 are easier to slide relatively in the automatic steel bar adjustment process. After the steel bars are automatically adjusted, the parallelism between the length direction of the steel bars and the sliding direction of the base 130 is higher, and further the measurement precision is improved.
Referring to fig. 3 and 4, the lower fixture base 210 has the first limit blocks 211 fixedly connected to both ends of the sliding direction of the lower fixture base 210 through bolts, and when the lower fixture base 210 is mounted on the sliding block 220, the first limit blocks 211 are firstly dismounted from the lower fixture base 210, and the first limit blocks 211 are mounted on the lower fixture base 210 after the lower fixture base 210 is mounted on the sliding block 220. When the tensile strength of the steel bar is detected, the steel bar can drive the lower clamp seat 210 and the sliding block 220 to relatively slide, and the first limiting block 211 can reduce the probability that the lower clamp seat 210 is separated from the sliding block 220, so that the safety during detection is improved.
Referring to fig. 5 and 6, the base 130 is provided with a damping mechanism 300 for reducing the impact of the sliding block 220 on the base 130, the damping mechanism 300 includes a piston 310, a piston rod 320, a first oil cylinder 330 and a second oil cylinder 340, and the axial directions of the piston 310, the piston rod 320, the first oil cylinder 330 and the second oil cylinder 340 are all parallel to the sliding direction of the sliding block 220. One end of the piston rod 320 is fixedly connected to the bottom end of the sliding block 220 through a bolt, and the other end of the piston rod 320 is fixedly connected to the piston 310 through a bolt. The piston 310 is coaxially inserted into the first cylinder 330, and the piston 310 divides the first cylinder 330 into a first oil chamber 350 and a second oil chamber 360. A first oil chamber 350 is located at an end of the first cylinder 330 near the sliding block 220, and a second oil chamber 360 is located at an end of the first cylinder 330 near the base 130. Piston 310 is provided with first through holes 311 communicating first oil chamber 350 with second oil chamber 360, and a plurality of first through holes 311 may be uniformly distributed in the circumferential direction of piston 310.
Referring to fig. 5 and 6, the second cylinder 340 is sleeved outside the first cylinder 330, the second cylinder 340 is clamped in the base 130, and a third oil chamber 370 is formed between the first cylinder 330 and the second cylinder 340. One end of the first oil cylinder 330, which is far away from the piston rod 320, is provided with a second through hole 331 for communicating the second oil chamber 360 and the third oil chamber 370, and the axis of the second through hole 331 is coaxial with the axis of the second oil cylinder 340. One end of the second cylinder 340 close to the sliding seat is provided with a vent hole 341, and the vent hole 341 is communicated with the third oil chamber 370 and the atmosphere. The first, second, and third oil chambers 350, 360, and 370 are filled with hydraulic oil.
When the sliding block 220 slides to the end closest to the frame 100, the piston 310 is located at the end of the first cylinder 330 closest to the frame 100. When a pulling force is applied to the reinforcing bar, the piston 310 slides toward the end of the first cylinder 330 near the sliding block 220, and both the hydraulic oil in the first oil chamber 350 and the hydraulic oil in the third oil chamber 370 flow toward the second oil chamber 360. When the steel bar is broken, the sliding block 220 suddenly drops toward the base 130, and a portion of the hydraulic cylinder in the second oil chamber 360 flows into the first oil chamber 350 through the first through hole 311, and a portion of the hydraulic oil in the second oil chamber 360 flows into the third oil chamber 370 through the second through hole 331. Because the first through hole 311 and the second through hole 331 have a damping effect on the hydraulic oil, when the hydraulic oil passes through the first through hole 311 and the second through hole 331, the kinetic energy of the sliding block 220 is gradually consumed by the hydraulic oil, so that the impact force of the sliding block 220 on the base 130 is reduced, and the probability that the sliding block 220 is damaged is reduced. Meanwhile, the impact force of the anti-skid blocks 230 on the lower clamp seat 210 can be reduced, and the probability that the lower clamp seat 210 is damaged is reduced.
When the hydraulic oil in the second oil chamber 360 flows into the third oil chamber 370, the air at the top end of the third oil chamber 370 can be discharged to the atmosphere from the vent hole 341, and the piston 310 can slide on the end of the first oil cylinder 330 closest to the frame 100 under the action of the sliding block 220, so as to facilitate the abutment of the rubber gasket 240 with the lower clamp seat 210. Meanwhile, since the vent hole 341 is disposed at the end of the second cylinder 340 closest to the sliding block 220, when the sliding block 220 slides to the end closest to the rack 100, the sliding block 220 can directly cover the vent hole 341, thereby reducing the probability of dust entering the third oil chamber 370 and protecting the damping mechanism 300.
The implementation principle of reinforcing bar pulling force check out test set of this application embodiment is:
in an initial state, the sliding block 220 is only subjected to self gravity, under the action of the self gravity, the sliding block 220 slides to one end of the sliding groove 131 closest to the rack 100, the piston 310 slides to one end of the first oil cylinder 330 closest to the rack 100, the rubber gasket 240 penetrates through the sliding block 220 to abut against the lower clamp seat 210, and the lower clamp seat 210 is not easy to slide relative to the sliding block 220; at this time, the experimenter clamps the two ends of the steel bar to the upper clamp 150 and the lower clamp 160, respectively, and then the base 130 slides in a direction away from the top seat 120. Under the pulling effect of reinforcing bar, the sliding block 220 slides to the one end that the spout 131 is closest to footstock 120, piston 310 slides to the one end that first hydro-cylinder 330 is closest to footstock 120, rubber gasket 240 no longer with lower anchor clamps seat 210 butt, if the length direction of reinforcing bar is not parallel with the glide direction of base 130, just can produce torsional moment between reinforcing bar and the lower anchor clamps 160, under this torsional moment's effect, lower anchor clamps seat 210 just can produce relative slippage with sliding block 220 voluntarily, in order to release this torsional moment, the reinforcing bar carries out self-control gradually simultaneously, make the length direction of reinforcing bar and the length direction of base 130 be parallel gradually, the detection precision has been improved. After the steel bar is broken, the sliding block 220 suddenly drops towards the base 130, at this time, the hydraulic cylinder in a part of the second oil chamber 360 flows into the first oil chamber 350 through the first through hole 311, hydraulic oil in a part of the second oil chamber 360 flows into the third oil chamber 370 through the second through hole 331, and under the damping action of the first through hole 311 and the second through hole 331, the hydraulic oil gradually consumes the kinetic energy of the sliding block 220, so that the impact force of the sliding block 220 on the base 130 is reduced, and the probability that the sliding block 220 and the lower clamp holder 210 are damaged is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a reinforcing bar pulling force check out test set which characterized in that: comprises a frame (100), a supporting and guiding upright post (110) is fixedly connected on the frame (100), one end of the supporting and guiding upright post (110) far away from the frame (100) is fixedly connected with a top seat (120), an upper clamp (150) is arranged on the top seat (120), a base (130) is connected on the supporting and guiding upright post (110) in a sliding way along the length direction of the supporting and guiding upright post, an automatic adjusting mechanism (200) is arranged on the base (130), the automatic adjusting mechanism (200) comprises a lower clamp seat (210), a lower clamp (160) is arranged on the lower clamp seat (210), an upper clamping groove (151) is arranged on the upper clamp (150), the lower clamp (160) is provided with a lower clamping groove (161), the length direction of the upper clamping groove (151) is parallel to the length direction of the lower clamping groove (161), the lower clamp seat (210) is connected with the base (130) in a sliding manner along the length direction of the lower clamping groove (161).
2. The reinforcing bar tension detecting apparatus according to claim 1, wherein: the automatic adjusting mechanism (200) further comprises a sliding block (220), the sliding block (220) is connected with the base (130) in a sliding mode along the length direction of the supporting guide upright post (110), the lower clamp seat (210) is connected with the sliding block (220) in a sliding mode along the length direction of the lower clamping groove (161), the automatic adjusting mechanism (200) further comprises an anti-slip block (230), the anti-slip block (230) is fixedly connected to the base (130), and the anti-slip block (230) can penetrate through the sliding block (220) and abut against the lower clamp seat (210).
3. The reinforcing bar tension detecting apparatus according to claim 2, wherein: one end, close to the lower clamp seat (210), of the antiskid block (230) is fixedly connected with a rubber gasket (240), and the rubber gasket (240) can be abutted to the lower clamp seat (210).
4. The reinforcing bar tension detecting apparatus according to claim 2, wherein: and the sliding block (220) and/or the lower clamp seat (210) are/is fixedly connected with a graphite sliding block (250), and the graphite sliding block (250) is connected with the sliding block (220) and the lower clamp seat (210).
5. The reinforcing bar tension detecting apparatus according to claim 2, wherein: the both ends of lower anchor clamps seat (210) slip direction all fixedly connected with first stopper (211), first stopper (211) can with sliding block (220) butt.
6. A reinforcing bar tension detecting apparatus according to any one of claims 2 to 5, wherein: and the base (130) is also provided with a damping mechanism (300) for reducing the impact of the sliding block (220) on the base (130).
7. The reinforcing bar tension detecting apparatus according to claim 6, wherein: damping mechanism (300) includes piston (310), piston rod (320), first hydro-cylinder (330) and second hydro-cylinder (340), the axial of piston (310), piston rod (320), first hydro-cylinder (330) and second hydro-cylinder (340) all with the glide direction of sliding block (220) is parallel, the one end of piston rod (320) with sliding block (220) fixed connection, the other end with piston (310) fixed connection, piston (310) wears to establish in first hydro-cylinder (330), piston (310) will first hydro-cylinder (330) is separated for first oil pocket (350) and second oil pocket (360), second oil pocket (360) set up piston (310) is kept away from the one end of piston (310) jar, first hydro-cylinder (330) wears to establish in second hydro-cylinder (340), second hydro-cylinder (340) fixed connection be in on base (130), first hydro-cylinder (330) with form third oil pocket (370) between second hydro-cylinder (340), first through-hole (311) have been seted up on piston (310), first through-hole (311) intercommunication first oil pocket (350) with second oil pocket (360), second through-hole (331) have been seted up on first hydro-cylinder (330), second through-hole (331) intercommunication second oil pocket (360) with third oil pocket (370), all fill in first oil pocket (350), second oil pocket (360) and third oil pocket (370) and have hydraulic oil.
8. The reinforcing bar tension detecting apparatus according to claim 7, wherein: the upper end of the second oil cylinder (340) is also provided with a vent hole (341), and the vent hole (341) is communicated with the third oil chamber (370) and is communicated with the atmosphere.
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| CN202022935497.XU CN214277724U (en) | 2020-12-07 | 2020-12-07 | Reinforcing bar pulling force check out test set |
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| CN202022935497.XU CN214277724U (en) | 2020-12-07 | 2020-12-07 | Reinforcing bar pulling force check out test set |
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| CN114034547A (en) * | 2021-12-21 | 2022-02-11 | 苏州赛文纺织科技有限公司 | Comprehensive experiment platform for tensile strength of textile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034547A (en) * | 2021-12-21 | 2022-02-11 | 苏州赛文纺织科技有限公司 | Comprehensive experiment platform for tensile strength of textile |
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