CN213456475U

CN213456475U - Steel bar bending tester

Info

Publication number: CN213456475U
Application number: CN202022440027.6U
Authority: CN
Inventors: 曹龙静; 王鹏; 王如意
Original assignee: Jinan Gangcheng Engineering Testing Co ltd
Current assignee: Jinan Gangcheng Engineering Testing Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-15
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a reinforcing bar bending test machine, which comprises a frame, the frame side is equipped with the motor, and the motor shaft end is connected with the lead screw, the lead screw is connected with the slider, and the slider is connected in the mount through the axle, the mount upper end is equipped with the separation blade, and the mount lower extreme is equipped with the buckle, the frame middle part is equipped with the slide rail, and the slide rail is connected with the slider, the frame top is equipped with the pneumatic cylinder, and the pneumatic cylinder lower extreme is connected with hydraulic cylinder axle, hydraulic cylinder axle lower extreme is connected with the connector, and the connector passes through screw and pneumatic cylinder hub connection, the connector lower extreme is connected with the support, and the cover has the sliding sleeve on the support to the inside sand grip that is equipped with of sliding sleeve, the support is inside to be. This steel bar bending test machine can be convenient for improve the efficiency that malleation and back pressure head were changed to make the efficiency of test reinforcing bar improve, and can be convenient for improve the security of steel bar bending test machine during operation.

Description

Steel bar bending tester

Technical Field

The utility model relates to a testing machine technical field specifically is a reinforcing bar bending test machine.

Background

The steel bar bending tester is a special device for performing plane forward and reverse bending tests on steel bars. The device is widely applied to the fields of metallurgy, machine manufacturing industry, building industry, engineering supervision, technical quality supervision and the like, and is used for testing the mechanical properties of forward and reverse bending of various reinforcing steel bars.

But current reinforcing bar bending test machine is when testing forward and reverse carrying out the performance to the reinforcing bar, need change the pressure head of hydraulic cylinder axle lower extreme, changes the pressure head and can cause the waste in man-hour, reduces reinforcing bar capability test's efficiency, and lacks safety device on the reinforcing bar mount of current reinforcing bar bending test machine, can cause the reinforcing bar to break away from the danger that the mount popped out in the use, and the security is relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reinforcing bar bending test machine to propose the current reinforcing bar bending test machine test reinforcement inefficiency and the relatively poor problem of security among the solution above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bending tester for steel bars, includes the frame, the frame side is equipped with the motor, and the motor axle head is connected with the lead screw, the lead screw is connected with the slider, and the slider is connected in the mount through the hub connection, the mount upper end is equipped with the separation blade, and the mount lower extreme is equipped with the buckle, the frame middle part is equipped with the slide rail, and the slide rail is connected with the slider, the frame top is equipped with the pneumatic cylinder, and the pneumatic cylinder lower extreme is connected with the hydraulic cylinder axle, hydraulic cylinder axle lower extreme is connected with the connector, and the connector passes through screw and pneumatic cylinder hub connection, the connector lower extreme is connected with the support, and the cover has the sliding sleeve on the support to the inside sand grip that is equipped with of sliding sleeve.

Preferably, the sliding block is connected with a sliding rail on the frame in a sliding mode, a threaded hole is formed in the sliding block, and the sliding block is connected with the screw rod in a threaded mode.

Preferably, the upper end of the fixing frame is U-shaped, and the blocking piece is connected to the fixing frame through a shaft.

Preferably, one end of the pressure head is in a convex arc shape, and the other end of the pressure head is in a concave arc shape.

Preferably, the stop block is arranged in the middle of the groove, and the surface of the stop block is flush with the surface of the pressure head.

Preferably, the raised lines are symmetrically distributed on two sides inside the sliding sleeve, and the width of the raised lines is matched with the groove on the pressure head

Compared with the prior art, the beneficial effects of the utility model are that: this steel bar bending test machine can be convenient for improve the efficiency that malleation and back pressure head were changed to make the efficiency of test reinforcing bar improve, and can be convenient for improve the security of steel bar bending test machine during operation:

1. when needs reverse bending test, with the sliding sleeve rebound on the mount, rotate the pressure head, make the back pressure end of pressure head down, the sliding sleeve that slides down to the inside sand grip of sliding sleeve reachs the dog position at pressure head middle part to the locking pressure head, with the reinforcing bar of bending reverse put into the fixed block, start the pneumatic cylinder, the pneumatic cylinder axle drives the pressure head and presses to the reinforcing bar, need not to tear open and trade the pressure head, thereby improved the work efficiency of testing machine.

2. The baffle on the two fixing blocks is rotated to the upper side, the reinforcing steel bar to be tested is placed into the fixing block groove, the baffle is rotated, the front end of the baffle is buckled into the buckle, and therefore the phenomenon that the reinforcing steel bar is broken out in the bending process is prevented, and the safety of the testing machine is improved.

Drawings

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

FIG. 2 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of point A of FIG. 2 according to the present invention;

FIG. 4 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 5 is an enlarged schematic view of point B in FIG. 4 according to the present invention;

fig. 6 is a schematic view of the overlooking structure of the sliding sleeve of the present invention.

In the figure: 1. a frame; 2. a motor; 3. a slide rail; 4. a screw rod; 5. a slider; 6. a fixed mount; 7. a hydraulic cylinder; 8. a hydraulic cylinder shaft; 9. a baffle plate; 10. buckling; 11. a connector; 12. a pressure head; 13. a groove; 14. a support; 15. a sliding sleeve; 16. a screw; 17. a rotating shaft; 18. a stopper; 19. and (4) raised strips.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a steel bar bending tester comprises a frame 1, a motor 2, a slide rail 3, a screw rod 4, a slide block 5, a fixed frame 6, a hydraulic cylinder 7, a hydraulic cylinder shaft 8, a baffle 9, a buckle 10, a connector 11, a pressure head 12, a groove 13, a support 14, a slide sleeve 15, a screw 16, a rotating shaft 17, a baffle 18 and a convex strip 19, wherein the side surface of the frame 1 is provided with the motor 2, the shaft end of the motor 2 is connected with the screw rod 4, the screw rod 4 is connected with the slide block 5, the slide block 5 is connected with the fixed frame 6 through a shaft, the upper end of the fixed frame 6 is provided with the baffle 9, the lower end of the fixed frame 6 is provided with the buckle 10, the middle part of the frame 1 is provided with the slide rail 3, the slide rail 3 is connected with the slide block 5, the top of the frame 1 is provided with the hydraulic cylinder 7, the lower end of the hydraulic cylinder, and the support 14 is sleeved with a sliding sleeve 15, a raised strip 19 is arranged inside the sliding sleeve 15, the support 14 is connected with a pressure head 12 through a rotating shaft 17, a groove 13 is arranged on the side surface of the pressure head 12, and a stop block 18 is arranged on the groove 13.

The sliding block 5 is connected with the sliding rail 3 on the frame 1 in a sliding mode, a threaded hole is formed in the sliding block 5, the sliding block 5 is connected with the lead screw 4 in a threaded mode, the lead screw 4 can be driven to rotate through the motor 2, the sliding block 5 is driven to move on the sliding rail 3, and the relative distance between the fixing frames 6 on the two sides can be adjusted automatically.

The structural shape of the upper end of the fixing frame 6 is U-shaped, the blocking piece 9 is connected to the fixing frame 6 through a shaft, so that the fixing frame 6 can stably clamp the reinforcing steel bars conveniently, and the reinforcing steel bars can be conveniently placed into the fixing frame 6.

Pressure head 12 one end structural shape is convex circular arc, and pressure head 12 other end structural shape is concave circular arc shape, can be convenient for make the radius of buckling of guaranteeing the reinforcing bar when forward buckling to guarantee test data's accuracy, because the reinforcing bar is curved form when backward buckling, the indent semicircle can prevent that the reinforcing bar from collapsing and take off at the in-process of buckling.

The stop block 18 is arranged in the middle of the groove 13, and the surface of the stop block 18 is flush with the surface of the pressure head 12, so that the stop block can conveniently play a role in limiting, and the sliding sleeve 15 is prevented from falling off from the pressure head 12.

Convex strip 19 symmetric distribution is in the inside both sides of sliding sleeve 15, and the width of convex strip 19 and the recess 13 phase-match on the pressure head 12, can be convenient for make sliding sleeve 15 can slide on mount 6 and pressure head 12, and can be stable fix pressure head 12.

The working principle is as follows: firstly, motors 2 on two sides of a frame 1 drive a screw rod 4 to rotate, the screw rod 4 drives a sliding block 5 to move on a sliding rail 3, so that the relative distance between fixing frames 6 on two sides can be adjusted, blocking pieces 9 on the two fixing frames 6 are rotated to the upper side, a steel bar to be tested is placed in a groove of the fixing frame 6, the blocking pieces 9 are rotated, the front ends of the blocking pieces 9 are buckled into a buckle 10, a hydraulic cylinder 7 is started, a hydraulic cylinder shaft 8 moves downwards, a pressure head 12 is driven to press the steel bar to a set bending degree, and therefore various performance parameters of the tested steel bar can be measured;

when a reverse buckling test is needed, the sliding sleeve 15 on the fixing frame 6 is slid upwards, the pressure head 12 is rotated to enable the back pressure end of the pressure head 12 to face downwards, the sliding sleeve 15 is slid downwards until the raised line 19 inside the sliding sleeve 15 reaches the position of the stop block 18 in the middle of the pressure head 12 to lock the pressure head 12, the bent steel bar is reversely placed into the fixing frame 6, the hydraulic cylinder 7 is started, and the hydraulic cylinder shaft 8 drives the pressure head 12 to press the steel bar, so that the reverse buckling performance of the steel bar is measured.

It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the scope of the present invention.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a reinforcing bar bending test machine, includes frame (1), its characterized in that: the side face of the frame (1) is provided with a motor (2), the shaft end of the motor (2) is connected with a lead screw (4), the lead screw (4) is connected with a sliding block (5), the sliding block (5) is connected with a fixing frame (6) through a shaft, the upper end of the fixing frame (6) is provided with a blocking piece (9), the lower end of the fixing frame (6) is provided with a buckle (10), the middle part of the frame (1) is provided with a sliding rail (3), the sliding rail (3) is connected with the sliding block (5), the top of the frame (1) is provided with a hydraulic cylinder (7), the lower end of the hydraulic cylinder (7) is connected with a hydraulic cylinder shaft (8), the lower end of the hydraulic cylinder shaft (8) is connected with a connector (11), the connector (11) is connected with the hydraulic cylinder shaft (8) through a screw (16), the lower end of the connector (11) is connected with a support (14), the support (14, the pressure head (12) is connected to the inside of the support (14) through a rotating shaft (17), a groove (13) is formed in the side face of the pressure head (12), and a stop block (18) is arranged on the groove (13).

2. The steel bar bending tester according to claim 1, wherein: the sliding block (5) is in sliding connection with the sliding rail (3) on the frame (1), a threaded hole is formed in the sliding block (5), and the sliding block (5) is in threaded connection with the screw rod (4).

3. The steel bar bending tester according to claim 1, wherein: the upper end of the fixing frame (6) is U-shaped, and the baffle sheet (9) is connected to the fixing frame (6) through a shaft.

4. The steel bar bending tester according to claim 1, wherein: one end of the pressure head (12) is in a convex arc shape, and the other end of the pressure head (12) is in a concave arc shape.

5. The steel bar bending tester according to claim 1, wherein: the stop block (18) is arranged in the middle of the groove (13), and the surface of the stop block (18) is flush with the surface of the pressure head (12).

6. The steel bar bending tester according to claim 1, wherein: the convex strips (19) are symmetrically distributed on two sides inside the sliding sleeve (15), and the width of the convex strips (19) is matched with the groove (13) on the pressure head (12).