CN215640567U

CN215640567U - Convenient reinforcing bar residual deformation testing arrangement

Info

Publication number: CN215640567U
Application number: CN202121311882.5U
Authority: CN
Inventors: 郑君光; 张世添; 潘立基
Original assignee: Guangdong Yijia Test And Identification Co ltd
Current assignee: Guangdong Yijia Test And Identification Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-25
Anticipated expiration: 2031-06-11

Abstract

The utility model belongs to the technical field of steel bar mechanical property detection, and discloses a convenient steel bar residual deformation testing device which comprises a lower connecting ring, wherein the middle part of the lower connecting ring is movably connected with a positioning shaft, the top end of the positioning shaft is movably connected with an upper connecting ring, the side walls of the lower connecting ring and the upper connecting ring are both fixedly provided with extension sleeves, the inner cavity of each extension sleeve is movably connected with a ball screw, and the surface of each ball screw is fixedly provided with a clamping ring. According to the utility model, the inserting sleeve is rotated, the two rotating rings drive the gear ring to rotate when the inserting sleeve rotates, and the three ball screws respectively arranged at the upper side and the lower side of the steel bar can be driven to simultaneously rotate at the same speed through the meshing of the gear ring and the gear, so that the meshing sleeve meshed on the surfaces of the ball screws is driven to drive the contact heads to move towards the steel bar to clamp the steel bar, the steel bar can be prevented from being inclined when the steel bar is clamped, and the detection accuracy of the device is improved.

Description

Convenient reinforcing bar residual deformation testing arrangement

Technical Field

The utility model belongs to the technical field of steel bar mechanical property detection, and particularly relates to a convenient steel bar residual deformation testing device.

Background

The residual deformation of the steel bar is also called unrecoverable deformation, the steel bar deforms when loaded, the deformation can only be partially recovered after unloading, the unrecoverable deformation is called residual deformation, the residual deformation of the steel bar is one of important parameters of the performance of the steel bar, and a deformation testing device is required to be used for detecting the residual deformation performance of the steel bar.

Present deformation test device is when using, need fix the both ends of reinforcing bar, then stretch the reinforcing bar, then take off the reinforcing bar, obtain the numerical value of reinforcing bar residual deformation volume, when most devices are fixed to the reinforcing bar, adopt to remove three bolt and press from both sides the reinforcing bar tight middle part at three bolt, but when using, three bolt that needs operating personnel manual control to be located both ends about the reinforcing bar moves, when removing, can not guarantee that the center after the removal of three bolt that is located both ends about the reinforcing bar is on same vertical line, when probably leading to the device to press from both sides the tight reinforcing bar, the reinforcing bar appears crooked, the detection precision of device has been reduced.

The existing deformation testing device needs to fix the clamping devices at the two ends on the stretching equipment respectively after clamping the two ends of the reinforcing steel bar, when the device is installed on the stretching equipment, a connecting shaft on the stretching equipment needs to be installed on the clamping devices through dismounting, the operation is complex, the device is inconvenient to install, and the working efficiency of operators is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, and provides a convenient reinforcing steel bar residual deformation testing device which has the advantages of preventing a reinforcing steel bar from being inclined, improving the detection accuracy of the device, being simple to operate and improving the working efficiency of operators.

In order to achieve the purpose, the utility model provides the following technical scheme: a convenient reinforcing steel bar residual deformation testing device comprises a lower connecting ring, wherein the middle of the lower connecting ring is movably connected with a positioning shaft, the top end of the positioning shaft is movably connected with an upper connecting ring, the side walls of the lower connecting ring and the upper connecting ring are fixedly provided with extension sleeves, the inner cavity of each extension sleeve is movably connected with a ball screw, the surface of each ball screw is fixedly provided with a clamping ring, the two clamping rings clamp and support the ball screws through the front ends of the extension sleeves, the horizontal deviation of the ball screws during rotation is avoided, the running stability of the device is ensured, one end of each ball screw, which is far away from the center of the lower connecting ring, is fixedly provided with a gear, the side walls of the lower connecting ring and the upper connecting ring are movably connected with a meshing sleeve, the top surface of the lower connecting ring and the bottom surface of the upper connecting ring are fixedly provided with supporting ring frames, and the middle of the supporting ring frames are movably connected with rotating rings, the side wall of the rotating ring is fixedly provided with a gear ring, and one surface of the rotating ring, which is close to the lower connecting ring and the upper connecting ring, is respectively and fixedly provided with an inserting shaft and an inserting sleeve.

According to a preferable technical scheme of the utility model, the side walls of the lower connecting ring and the upper connecting ring are fixedly provided with fixing plates, one end of each fixing plate, which is far away from the center of the lower connecting ring, is provided with a mounting groove, one end of the inner cavity of the mounting groove, which is close to the axis of the lower connecting ring, is fixedly provided with a telescopic rod and a return spring, the other end of each telescopic rod is fixedly provided with a clamping plate, the telescopic rod is movably sleeved in the middle of the return spring, the clamping plate is pulled towards one end, which is far away from the fixing plate, so that a gap between the fixing plate and the clamping plate is increased, at the moment, a stepped connecting shaft on stretching equipment can be inserted into the gap between the fixing plate and the clamping plate, the clamping plate is loosened, the clamping plate is pulled towards the fixing plate by the elasticity of the return spring, so that the fixing plate and the clamping plate are clamped on the connecting section of the stepped shaft on the stretching equipment, and the device is fixed.

As a preferred technical scheme of the utility model, one end of the meshing sleeve, which is close to the axis of the lower connecting ring, is located in the inner cavity of the lower connecting ring, one end of the meshing sleeve, which is close to the center of the lower connecting ring, is fixedly provided with a contact head, the contact head is conical, and the tip of the contact head is in direct contact with the steel bar, so that the condition that the steel rib on the surface of the steel bar is clamped unevenly is avoided when the steel bar is clamped.

As a preferred technical scheme of the utility model, the side wall of the lower connecting ring is fixedly provided with a slide bar, the left two ends of the meshing sleeve are both provided with sliding grooves, the slide bar is movably connected in an inner cavity of the sliding grooves, and the slide bar positions and guides the movement of the meshing sleeve, so that the stability of the movement of the meshing sleeve is ensured.

As a preferred technical solution of the present invention, the ball screws are engaged in an inner cavity of the engaging sleeve, there are two clamping rings, the two clamping rings are respectively located at front and rear sides of one end of the extending sleeve away from the lower connecting ring, a top end of the gear is engaged with a bottom end of the gear ring, the two rotating rings drive the two gear rings to rotate when rotating, and through engagement between the gear ring and the gear, the three ball screws located at upper and lower sides of the steel bar can be driven to rotate simultaneously, so as to drive the engaging sleeve engaged on the surface of the ball screw to move towards the steel bar, thereby clamping the steel bar.

As a preferable technical solution of the present invention, there are three insertion shafts and three insertion sleeves, the three insertion shafts are respectively located under the three insertion sleeves, the diameter values of the three insertion shafts are all equal to the diameter values of the inner cavities of the three insertion sleeves, and the upper connection ring is slid downward to make the insertion sleeves sleeve on the surfaces of the insertion shafts, so as to connect the two rotating rings in the vertical direction, thereby enabling the two rotating rings to rotate simultaneously.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the inserting sleeve is rotated, the two rotating rings drive the gear ring to rotate when the inserting sleeve rotates, and the three ball screws respectively arranged at the upper side and the lower side of the steel bar can be driven to simultaneously rotate at the same speed through the meshing of the gear ring and the gear, so that the meshing sleeve meshed on the surfaces of the ball screws is driven to drive the contact heads to move towards the steel bar to clamp the steel bar, the steel bar can be prevented from being inclined when the steel bar is clamped, and the detection accuracy of the device is improved.

2. According to the utility model, the clamping plate is pulled towards the end far away from the fixing plate, so that the gap between the fixing plate and the clamping plate is increased, the stepped connecting shaft on the stretching equipment can be inserted into the gap between the fixing plate and the clamping plate, the clamping plate is loosened, the elasticity of the return spring can pull the clamping plate to move towards the fixing plate, and therefore, the fixing plate and the clamping plate are clamped on the connecting section of the stepped shaft on the stretching equipment, the device can be rapidly installed, and the working efficiency of operators is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structural return spring explosion connection of the present invention;

FIG. 3 is a schematic view of an explosive connection of a rotating ring according to the present invention;

FIG. 4 is a schematic illustration of an exploded connection of a structured clutch collar of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a lower connecting ring; 2. positioning the shaft; 3. an upper connecting ring; 4. an extension sleeve; 5. a ball screw; 6. a clamping ring; 7. a gear; 8. an engagement sleeve; 9. a contact head; 10. a support ring frame; 11. a rotating ring; 12. a ring gear; 13. a plug shaft; 14. a plug bush; 15. a fixing plate; 16. mounting grooves; 17. a telescopic rod; 18. a return spring; 19. a splint; 20. a slide bar; 21. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, the utility model provides a convenient reinforcing steel bar residual deformation testing device, which comprises a lower connecting ring 1, a positioning shaft 2 is movably connected at the middle part of the lower connecting ring 1, an upper connecting ring 3 is movably connected at the top end of the positioning shaft 2, extension sleeves 4 are fixedly arranged on the side walls of the lower connecting ring 1 and the upper connecting ring 3, a ball screw 5 is movably connected in the inner cavity of the extension sleeve 4, clamp rings 6 are fixedly arranged on the surface of the ball screw 5, the two clamp rings 6 clamp and support the ball screw 5 through the front end of the extension sleeve 4, so that the horizontal deviation of the ball screw 5 during rotation is avoided, the running stability of the device is ensured, a gear 7 is fixedly arranged at one end of the ball screw 5 far away from the center of the lower connecting ring 1, meshing sleeves 8 are movably connected on the side walls of the lower connecting ring 1 and the upper connecting ring 3, and a support ring frame 10 is fixedly arranged on the top surface of the lower connecting ring 1 and the bottom surface of the upper connecting ring 3, the middle part of the support ring frame 10 is movably connected with a rotating ring 11, the side wall of the rotating ring 11 is fixedly provided with a gear ring 12, and one surface of the rotating ring 11 close to the lower connecting ring 1 and the upper connecting ring 3 is respectively fixedly provided with an inserting shaft 13 and an inserting sleeve 14.

Wherein, the equal fixed mounting of lateral wall of lower go-between 1 and last go-between 3 has fixed plate 15, the one end at go-between 1 center has been seted up down to fixed plate 15, the one end fixed mounting that the mounting groove 16 inner chamber is close to go-between 1 axis down has telescopic link 17 and reset spring 18, the other end fixed mounting of telescopic link 17 has splint 19, telescopic link 17 activity cup joints the middle part at reset spring 18, with splint 19 to the one end pulling of keeping away from fixed plate 15, make the gap increase between fixed plate 15 and the splint 19, can insert the ladder connecting axle on the tensile equipment in the gap between fixed plate 15 and the splint 19 this moment, loosen splint 19, reset spring 18's elasticity can stimulate splint 19 to move to fixed plate 15, thereby make fixed plate 15 and splint 19 press from both sides tightly on the linkage segment of ladder shaft on tensile equipment, the realization is fixed to the device.

Wherein, the one end that meshing cover 8 is close to down go-between 1 axis is located go-between 1's inner chamber down, and meshing cover 8 is close to down the one end fixed mounting at go-between 1 center and has contact 9, and contact 9 is coniform, and contact 9's pointed end and reinforcing bar direct contact to avoid when pressing from both sides tight reinforcing bar, the steel rib on reinforcing bar surface causes and presss from both sides tight inhomogeneous condition.

Wherein, the lateral wall fixed mounting of lower go-between 1 has a draw runner 20, and the left both ends of meshing cover 8 have all been seted up spout 21, and draw runner 20 swing joint is in the inner chamber of spout 21, and draw runner 20 fixes a position and leads to the motion of meshing cover 8, has guaranteed the stability of meshing cover 8 motion.

Wherein, ball 5 meshing is in the inner chamber of engaging sleeve 8, clamp ring 6 is total two, two clamp rings 6 are located respectively and extend cover 4 and keep away from the front and back both sides of lower go-between 1 one end, the top of gear 7 and the bottom meshing of ring gear 12, two rotatory rings 11 drive two ring gear 12 rotations when rotatory, through the meshing of ring gear 12 and gear 7, can drive the three ball 5 simultaneous rotations that are located both sides about the reinforcing bar, thereby drive the meshing sleeve 8 on ball 5 surfaces and remove to the reinforcing bar, press from both sides tightly the reinforcing bar.

Wherein, grafting axle 13 and plug bush 14 all have threely, and three plug bush 13 is located three plug bush 14 respectively under, and the diameter value of three plug bush 13 all equals the diameter value of three plug bush 14 inner chambers, will go up go-between 3 and slide down, makes plug bush 14 cover on the surface of plug bush 13 to carry out the ascending connection of vertical side to two rotatory rings 11, thereby realize that two rotatory rings 11 rotate simultaneously.

The working principle and the using process of the utility model are as follows:

when the connecting device is used, a steel bar is inserted into inner cavities of the lower connecting ring 1 and the upper connecting ring 3, then the upper connecting ring 3 slides downwards, the inserting sleeve 14 is sleeved on the surface of the inserting shaft 13, after the bottom surface of the inserting sleeve 14 is attached to the top surface of the rotating ring 11, the inserting sleeve 14 is rotated, the inserting sleeve 14 drives the two rotating rings 11 to rotate, the two rotating rings 11 drive the two gear rings 12 to rotate when rotating, three ball screws 5 positioned on the upper side and the lower side of the steel bar can be driven to rotate simultaneously through the engagement of the gear rings 12 and the gear 7, so that the engaging sleeve 8 engaged on the surface of the ball screws 5 is driven to drive the contact head 9 to move towards the steel bar, the contact head 9 is in contact with the steel bar, and the steel bar is clamped;

after the reinforcing steel bars are clamped, the device is installed on stretching equipment, when the device is installed, the clamping plate 19 is pulled towards one end far away from the fixing plate 15, so that a gap between the fixing plate 15 and the clamping plate 19 is enlarged, the stepped connecting shaft on the stretching equipment can be inserted into the gap between the fixing plate 15 and the clamping plate 19, then the clamping plate 19 is loosened, the elasticity of the return spring 18 can pull the clamping plate 19 to move towards the fixing plate 15, and therefore the fixing plate 15 and the clamping plate 19 are clamped on the connecting section of the stepped shaft on the stretching equipment, and the device is fixed;

after the device is installed in place, the pulling device is started, the upper connecting ring 3 is pulled upwards, so that the steel bar is radially deformed, the clamping plate 19 is pulled away at the moment, the device is taken down from the stretching device, the inserting sleeve 14 is rotated in the reverse direction, the ball screw 5 drives the meshing sleeve 8 to rotate in the reverse direction, the steel bar is loosened, and finally the steel bar is taken out, so that the detection on the residual deformation performance of the steel bar can be realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a convenient reinforcing bar residual deformation testing arrangement, includes go up go-between (1), its characterized in that: the middle of the lower connecting ring (1) is movably connected with a positioning shaft (2), the top end of the positioning shaft (2) is movably connected with an upper connecting ring (3), the side walls of the lower connecting ring (1) and the upper connecting ring (3) are fixedly provided with an extension sleeve (4), the inner cavity of the extension sleeve (4) is movably connected with a ball screw (5), the surface of the ball screw (5) is fixedly provided with a clamping ring (6), one end of the ball screw (5) far away from the center of the lower connecting ring (1) is fixedly provided with a gear (7), the side walls of the lower connecting ring (1) and the upper connecting ring (3) are movably connected with a meshing sleeve (8), the top surface of the lower connecting ring (1) and the bottom surface of the upper connecting ring (3) are fixedly provided with a supporting ring frame (10), the middle of the supporting ring frame (10) is movably connected with a rotating ring (11), the side wall of the rotating ring (11) is fixedly provided with a gear ring (12), one surface of the rotating ring (11) close to the lower connecting ring (1) and one surface of the upper connecting ring (3) are respectively and fixedly provided with an inserting shaft (13) and an inserting sleeve (14).

2. The convenient reinforcing steel bar residual deformation testing device according to claim 1, characterized in that: the utility model discloses a go up go-between (1), go up the equal fixed mounting of lateral wall of go-between (3) down has fixed plate (15), mounting groove (16) have been seted up to the one end at go-between (1) center under keeping away from in fixed plate (15), mounting groove (16) inner chamber is close to the one end fixed mounting of go-between (1) axis down has telescopic link (17) and reset spring (18), the other end fixed mounting of telescopic link (17) has splint (19).

3. The convenient reinforcing steel bar residual deformation testing device according to claim 1, characterized in that: one end, close to the axis of the lower connecting ring (1), of the meshing sleeve (8) is located in the inner cavity of the lower connecting ring (1), one end, close to the center of the lower connecting ring (1), of the meshing sleeve (8) is fixedly provided with a contact head (9), and the contact head (9) is conical.

4. The convenient reinforcing steel bar residual deformation testing device according to claim 1, characterized in that: the side wall of the lower connecting ring (1) is fixedly provided with a sliding strip (20), the left two ends of the meshing sleeve (8) are provided with sliding grooves (21), and the sliding strip (20) is movably connected in the inner cavity of the sliding grooves (21).

5. The convenient reinforcing steel bar residual deformation testing device according to claim 1, characterized in that: the ball screw (5) is meshed in an inner cavity of the meshing sleeve (8), the number of the clamping rings (6) is two, the two clamping rings (6) are respectively located on the front side and the rear side of one end, far away from the lower connecting ring (1), of the extending sleeve (4), and the top end of the gear (7) is meshed with the bottom end of the gear ring (12).

6. The convenient reinforcing steel bar residual deformation testing device according to claim 1, characterized in that: plug shaft (13) and plug sleeve (14) all have threely, three plug shaft (13) are located threely respectively under plug sleeve (14), three the diameter value of plug shaft (13) all equals the diameter value of three plug sleeve (14) inner chamber.