Deformed steel bar convenient to measure bending

Abstract

The utility model relates to a deformed steel bar convenient to measure and bend, which comprises a deformed steel bar body (1) and a square sleeve (3) sleeved on the deformed steel bar body (1), a clamping groove (33) is arranged on the outer side of the square sleeve (3) to be in butt joint with a grabbing part of bending equipment, and a tester can move the square sleeve (3) to the grabbing part of the bending equipment to be in butt joint and fixed for the bending equipment with different sizes. Therefore, the deformed steel bar can adapt to bending equipment with different sizes. Studs (31) are arranged at the front end and the rear end of the square sleeve (3) and are connected with front locking rings (2) and rear locking rings (2) in a threaded mode, each locking ring (2) is provided with a radial protruding block (21) extending to the position between the two transverse ribs, and before butt joint is carried out, a tester needs to lock the square sleeve (3) on the deformed steel bar body (1), and the specific operation is that the two locking rings (2) are rotated to be close to each other and abut against the corresponding transverse ribs respectively, and then butt joint is carried out on the two locking rings (2). Therefore, the deformed steel bar body (1) is clamped.

Description

Technical Field

[0001] The utility model relates to a threaded steel bar, in particular to a threaded steel bar which is convenient for measuring bending. Background Art

[0002] In buildings, rebar and concrete are often used to make concrete components as load-bearing components. Because the transverse rib structure of the rebar fits tightly with the concrete, the concrete components made of rebar have high strength, toughness and durability. Due to thermal expansion and contraction, the rebar located between the concrete will bend in different directions. Considering the safety of the building, the rebar needs to be tested for bending before it is used to find out the rebar that will not crack after bending. The usual bending test is to fix the rebar on the bending part of the external bending equipment, and the bending end grabs the end of the rebar and then moves horizontally to perform the bending operation. In the bending test, the cylindrical rebar is easy to slide away, and the position of the rebar will be offset, resulting in inaccurate measurement results. Patent document CN 220603084 U discloses a rebar that is easy to measure bending, which includes a slot and a locking hole. After the slot is docked with the bending equipment, it is locked with the locking hole, so that it can be fixed on the bending equipment without sliding away. Because its fixed end position is fixed, it cannot adapt to bending equipment of different sizes. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a threaded steel bar which is convenient for measuring bending and can adapt to bending equipment of different sizes.

[0004] In order to solve the above problems, the utility model provides a threaded steel bar that is convenient for measuring bending, including a strip-shaped threaded steel body, and a plurality of transverse ribs are axially arranged on the side of the threaded steel body. The utility model is characterized in that: a square sleeve is sleeved on the threaded steel body, and a slot is opened on the outer side of the square sleeve to connect with the grasping part of the bending equipment, and the square sleeve can move axially along the threaded steel body; studs are provided at the front and rear ends of the square sleeve, and front and rear locking rings are threadedly connected thereto, and the locking rings are provided with radial protrusions, and the radial protrusions are located between two adjacent transverse ribs on the threaded steel body. The two locking rings rotate on the studs and approach each other until they each abut against the corresponding transverse ribs, thereby clamping the threaded steel body.

[0005] Furthermore, a support portion is fixed on the inner wall of the locking ring, a lever is connected to the support portion, the lever uses the support portion as a fulcrum, the locking end of the lever is connected to the radial protrusion, a spring is clamped between the locking end of the lever and the inner wall of the locking ring, the spring lifts the locking side of the lever to make the radial protrusion extend radially toward the threaded steel body.

[0006] Furthermore, an unlocking ring is provided inside the locking ring, and the unlocking ring is connected to a release piece, which is located inside the locking ring and has an unlocking groove. The unlocking piece passes through the unlocking groove from the inside of the locking ring to the outside. A protrusion is provided on the unlocking ring, and the unlocking ring rotates together with the protrusion. The rotation of the unlocking ring drives the protrusion to move closer and contact the unlocking end of the lever through the inclined surface, thereby lifting the unlocking end. The locking end of the lever moves downward, driving the radial protrusion radially away from the threaded steel body to achieve unlocking.

[0007] Furthermore, the slot is provided with a fixing hole for screws to pass through to fix the square sleeve on the external bending device.

[0008] Furthermore, a tilt sensor is installed on the outside of the square sleeve.

[0009] The present invention has the following beneficial effects:

[0010] Before the bending test of the rebar, the tester holds the rebar body with one hand and moves the square sleeve along the axial direction of the rebar body to the gripping part of the bending equipment with the other hand, so as to dock the square sleeve to the gripping part. Faced with bending equipment of different sizes, the tester can move the square sleeve to the gripping part of the bending equipment, and then dock it to the gripping part to fix it. It can be seen that this rebar can adapt to bending equipment of different sizes. After the square sleeve is aligned with the gripping part of the bending equipment, before docking, the tester needs to lock the square sleeve on the rebar body. The specific operation is: rotate the two locking rings threaded on the studs at the front and rear ends of the square sleeve to make them close to the square sleeve until the radial protrusions of the two locking rings each abut against the corresponding transverse ribs of the rebar body, so that the two locking rings clamp the rebar body, and the square sleeve is locked on the rebar body and will not move relative to the rebar body. Then, the tester docks the slot on the square sleeve to the gripping part of the bending equipment to complete the docking. In this way, the rebar is fixed on the bending equipment and the bending test can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of rebar.

[0012] Figure 2 This is an exploded view of rebar.

[0013] Figure 3 Schematic diagram of the bottom of the lock ring.

[0014] Figure 4 yes Figure 3 AA cross-section diagram. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with specific implementation methods.

[0016] like Figure 1The threaded steel bar shown in the figure comprises a strip-shaped threaded steel body 1 and a square sleeve 3 sleeved on the threaded steel body 1. The bottom surface of the square sleeve 3 is as shown in FIG. Figure 3 As shown, there are multiple transverse ribs arranged axially on the side of the threaded steel body 1. The tester holds the threaded steel body 1 with one hand and moves the square sleeve 3 along the threaded steel body 1 axially to the gripping part of the bending equipment with the other hand, so as to dock the square sleeve 3 to the gripping part; before docking, the square sleeve 3 needs to be locked on the threaded steel body 1. Figure 2 As shown, the square sleeve 3 is provided with locking rings 2 at both ends, and studs 31 extend from both ends to thread the front and rear locking rings 2. A radial protrusion 21 is provided on the inner wall of the locking ring 2, and the radial protrusion 21 is located between two adjacent transverse ribs on the threaded steel body 1. Figure 4 As shown, a support portion 23 is fixedly installed on the inner wall of the locking ring 2, and the lever 234 uses the support portion 23 as a fulcrum, and the radial protrusion 21 is connected to the locking end 231 of the lever 234. A spring 233 is clamped between the locking end 231 of the lever 234 and the inner wall of the locking ring 2. The spring 233 lifts the locking end 231 of the lever 234, and the radial protrusion 21 radially extends toward the threaded steel body 1. The tester rotates the two locking rings 2 threadedly connected to the studs 31 at the front and rear ends of the square sleeve 3 to make them close to the square sleeve 3 until the radial protrusions 21 of the two locking rings 2 each abut against the corresponding transverse ribs of the threaded steel body 1, so that the two locking rings 2 clamp the threaded steel body 1, and the square sleeve 3 is locked on the threaded steel body 1 and will not move relative to the threaded steel body 1. After the square sleeve 3 is locked on the threaded steel body 1, the tester can dock the square sleeve 3 on the grip of the bending equipment, such as Figure 1 As shown, a slot 33 is provided on the first side 35 of the square sleeve 3, a fixing hole 34 is installed on the slot 33, and an inclination sensor 32 is installed on the second side 30 of the square sleeve 3. The tester docks the slot 33 on the square sleeve 3 with the grip of the bending device, and then passes the screw through the grip and the fixing hole 34 to lock it to complete the docking. In this way, the rebar is fixed on the bending device, and the bending device can be started to perform a bending test on the rebar. During the bending process, the bending part of the bending device grabs the end of the rebar fixed on the grip and moves horizontally to bend the rebar. The tester uses the inclination sensor 32 to obtain the current bending angle of the rebar. If the current bending angle is consistent with the bending angle required for the test, the tester stops the bending device and detects whether there are cracks on the rebar, thus completing the bending test of the rebar.

[0017] Because the locking ring 2 locks the square sleeve 3 on the threaded steel body 1, the tester needs to release the locking ring 2 before axially moving the square sleeve 3. Figure 4As shown, the lock ring 2 is provided with an unlocking ring 201, the unlocking ring 201 is connected to an unlocking member 20, the unlocking member 20 is located inside the lock ring 2, the lock ring 2 is provided with an unlocking groove 24, the unlocking member 20 passes through the unlocking groove 24 from the inside of the lock ring 2 to the outside, and the unlocking ring 201 is provided with a protrusion 202. Figure 4 The counterclockwise rotation shown in the figure causes the unlocking ring 201 to rotate counterclockwise together with the protrusion 202. The rotation of the unlocking ring 201 drives the protrusion 202 to move closer and contact the unlocking end 232 of the lever 234 through the inclined surface, thereby lifting the unlocking end 232. The locking end 231 of the lever 234 moves downward, driving the radial protrusion 21 radially away from the threaded steel body 1 to achieve unlocking, and the square sleeve 3 can move back and forth along the threaded steel body 1.

[0018] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.

Claims

1. A threaded steel bar that is convenient for measuring bending, comprising a strip-shaped threaded steel bar body (1), wherein a plurality of transverse ribs are axially arranged on the side of the threaded steel bar body (1), and characterized in that: A square sleeve (3) is sleeved on a threaded steel body (1), and a slot (33) is provided on the outer side of the square sleeve (3) to connect with the gripping part of the bending device. The square sleeve (3) can move axially along the threaded steel body (1); studs (31) are provided at the front and rear ends of the square sleeve (3), and front and rear locking rings (2) are threadedly connected thereto. The locking rings (2) are provided with radial protrusions (21), and the radial protrusions (21) are located between two adjacent transverse ribs on the threaded steel body (1). The two locking rings (2) rotate on the studs (31) and approach each other until their respective radial protrusions (21) abut against the corresponding transverse ribs, thereby clamping the threaded steel body (1).

2. The threaded steel bar according to claim 1, characterized in that: A support portion (23) is fixed on the inner wall of the lock ring (2), and a lever (234) is connected to the support portion (23). The lever (234) uses the support portion (23) as a fulcrum, and a locking end (231) of the lever (234) is connected to the radial protrusion (21). A spring (233) is sandwiched between the locking end (231) of the lever (234) and the inner wall of the lock ring (2). The spring (233) lifts the locking end (231) of the lever (234) to make the radial protrusion (21) extend radially toward the threaded steel body (1).

3. The threaded steel bar according to claim 2, characterized in that: An unlocking ring (201) is provided inside the lock ring (2), the unlocking ring (201) is connected to an unlocking piece (20), the unlocking piece (20) is located inside the lock ring (2), the lock ring (2) is provided with an unlocking groove (24), the unlocking piece (20) passes through the unlocking groove (24) from the inside of the lock ring (2) to the outside; a protrusion (202) is provided on the unlocking ring (201), the unlocking ring (201) rotates together with the protrusion (202), the unlocking ring (201) rotates to drive the protrusion (202) to move closer to and contact the unlocking end (232) of the lever (234) through the inclined surface, thereby lifting the unlocking end (232), and then the locking end (231) of the lever (234) moves downward to drive the radial protrusion (21) to move radially away from the threaded steel body (1) to achieve unlocking.

4. The threaded steel bar according to claim 1, characterized in that: The clamping groove (33) is provided with a fixing hole (34) for screws to pass through to fix the square sleeve (3) on the external bending device.

5. The threaded steel bar according to claim 1, characterized in that: An inclination sensor (32) is installed on the outside of the square sleeve (3).

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