Steel bar distance gauge

Abstract

The utility model discloses a reinforcing steel bar distance gauge, belongs to the technical field of reinforcing steel bar detection, and solves the problems that a positioning mechanism on an existing reinforcing steel bar distance gauge is fixed, the position of the existing reinforcing steel bar distance gauge cannot be adjusted according to the specification of a reinforcing steel bar, and the application range of the existing reinforcing steel bar distance gauge is limited. Comprising a base, an electric sliding rail fixedly connected to the base, a fixed positioning seat fixedly connected to the base and located in the middle of the electric sliding rail and two movable positioning seats, and the electric sliding rail is in transmission connection with two sliding seats moving in the opposite direction or in the back-to-back direction. In the using process of the steel bar dotting machine, an operator places a steel bar on the fixed positioning seat, the steel bar specification is automatically adapted through the V-shaped groove, after the detection circuit detects the steel bar, the driving motor is triggered to rotate forwards, the sliding seat acts to support the two ends of the steel bar, the steel bar is taken away after dotting is completed, and whether the steel bar exists or not is sensed. And the driving motor is triggered to reversely rotate and then stops acting, so that the steel bars with different lengths are automatically adapted without manual adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar detection, in particular to a steel bar distance meter. Background Art

[0002] The steel bar gauge is a professional auxiliary marking device used to mark the precise spacing on the tested metal material. The instrument is mainly used for preliminary marking of metal plates, bars, wires, etc. in tensile tests to ensure that the original gauge length N of the specimen is evenly and accurately divided. It allows effective point-by-point marking along the parallel length of the specimen. When the specimen is stretched to fracture, the elongation of each marked point can be accurately determined using the corresponding measuring equipment. Combined with a specific calculation formula, these data will be used to calculate the elongation of the specimen after fracture, which is crucial for evaluating the performance of metal materials.

[0003] The steel bar gauge of the prior art is as follows Figure 1 As shown, it includes a base 1, a positioning mechanism 2, a transmission mechanism 3 and a dot-marking mechanism 4. The positioning mechanism 2 is fixed on the surface of the base 1. The steel bars to be dotted are first placed on the positioning mechanism 2 and then fixed. After that, the dot-marking mechanism 4 dots the steel bars while moving along the length direction of the steel bars under the drive of the transmission mechanism 3. When it reaches the other end, the work is completed.

[0004] However, the positioning mechanisms on the current steel bar gauges are all fixed and cannot be adjusted according to the specifications of the steel bars, so their scope of use is limited.

[0005] Therefore, a steel bar gauge is proposed to solve or alleviate the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a steel bar gauge.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A steel bar distance meter comprises a base, an electric slide rail fixedly connected to the base, a fixed positioning seat fixedly connected to the base and located in the middle of the electric slide rail, and two movable positioning seats, the electric slide rail is transmission-connected to two slide seats that move toward or away from each other, the movable positioning seat is fixedly connected to the slide seat, and detection circuits are provided on the movable positioning seat and the fixed positioning seat, and the detection circuits are used to control the forward and reverse rotation and start and stop operation of a driving motor in the electric slide rail.

[0009] Preferably, the electric slide rail includes a track fixedly connected to the base, a drive motor fixedly connected to one end thereof, and a screw rod rotatably connected to the track and transmission connected to the output shaft of the drive motor, the screw rod is provided with two threads with opposite rotation directions, and the two slide seats are respectively connected to the two threads.

[0010] Preferably, the detection circuit includes a fixed seat detection circuit, a movable seat detection circuit, a trigger circuit, a controller, and a forward and reverse control circuit;

[0011] The fixed seat detection circuit is arranged on the fixed positioning seat, and is used to send out a detection signal when there are steel bars on the fixed positioning seat;

[0012] The movable seat detection circuit is arranged on the movable positioning seat, and is used to send out a detection signal 2 when there are steel bars on the movable positioning seat;

[0013] The trigger circuit is connected to the output ends of the fixed seat detection circuit and the movable seat detection circuit, and sends out a trigger signal in response to the detection signal 1 or in response to the detection signal 1 and the detection signal 2 at the same time;

[0014] The controller is coupled to the output end of the trigger circuit, and controls the driving motor to rotate forward, reverse, or stop through the forward and reverse control circuit in response to the trigger signal.

[0015] Preferably, the fixed seat detection circuit includes a distance sensor 1 and a voltage comparison circuit 1 coupled to the distance sensor 1, and an output end of the voltage comparison circuit 1 is coupled to a trigger circuit.

[0016] Preferably, the movable seat detection circuit comprises a second distance sensor and a second voltage comparison circuit coupled to the second distance sensor, and an output end of the second voltage comparison circuit is coupled to a trigger circuit.

[0017] Preferably, the trigger circuit is an RS trigger, a CP pin of the RS trigger is electrically connected to a setting, an S pin of the RS trigger is coupled to a fixed seat detection circuit, and an R pin of the RS trigger is coupled to a movable seat detection circuit.

[0018] Preferably, the controller is a 51 series single chip microcomputer.

[0019] Preferably, the fixed positioning seat and the movable positioning seat both include a support seat, a clamping plate, and a bolt penetrating the clamping plate and threadedly connected to the support seat.

[0020] Preferably, the top surface of the support seat is recessed downward to form a V-shaped groove.

[0021] Preferably, a plane groove is formed at the bottom of the V-shaped groove.

[0022] The utility model has the following beneficial effects:

[0023] During the operation of the utility model, the operator only needs to place the steel bar on the predetermined fixed positioning seat, and rely on the V-shaped groove to automatically adapt the steel bar specifications. Subsequently, the detection circuit recognizes the presence of the steel bar and activates the drive motor to work in forward rotation, thereby driving the slide to move to support the two ends of the steel bar. After the marking is completed and the steel bar is removed, when the presence of the steel bar is no longer detected, the drive motor will be triggered to reverse and finally stop, allowing the slide to return to its original position, thereby automatically matching steel bars of different lengths without the need for manual adjustment, thereby ensuring efficient and precise operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the prior art;

[0025] Figure 2 It is a structural schematic diagram of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the electric slide rail and the movable positioning seat in the utility model;

[0027] Figure 4 It is a structural block diagram of the detection circuit in the utility model.

[0028] 1. Base; 2. Positioning mechanism; 3. Transmission mechanism; 4. Dotting mechanism; 5. Base; 6. Electric slide rail; 601. Track; 602. Slide seat; 603. Drive motor; 7. Fixed positioning seat; 8. Movable positioning seat; 801. Support seat; 8011. V-shaped groove; 8012. Plane groove; 802. Clamp; 803. Bolt; 9. Transmission mechanism; 10. Dotting mechanism; 11. Distance sensor 1; 12. Voltage comparison circuit 1; 13. Distance sensor 2; 14. Voltage comparison circuit 2; 15. Trigger circuit; 16. Controller; 17. Forward and reverse control circuit. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] A steel bar gauge, such as Figure 2 As shown, it includes a base 5, an electric slide rail 6 fixedly connected to the base 5, a fixed positioning seat 7 fixedly connected to the base 5 and located in the middle of the electric slide rail 6, two movable positioning seats 8, a transmission mechanism 9 arranged on the base 5 and located above the electric slide rail 6, and a dot-marking mechanism 10 slidably connected to the transmission mechanism 9, and the dot-marking mechanism 10 is controlled by the transmission mechanism 9 to move in its length direction.

[0031] It should be noted that the transmission mechanism 9 and the dotting mechanism 10 are both prior arts, and no improvements have been made to the two in the present application document, so they still remain structures well known to those skilled in the art, and therefore will not be described in detail here.

[0032] like Figure 4 As shown, detection circuits are provided on both the movable positioning seat 8 and the fixed positioning seat 7. The detection circuits are used to control the forward and reverse rotation and start and stop operation of the driving motor 603 in the electric slide rail 6. The detection circuits include a fixed seat detection circuit, a movable seat detection circuit, a trigger circuit 15, a controller 16, and a forward and reverse control circuit 17.

[0033] The forward and reverse control circuit 17 mentioned above is a conventional three-phase motor forward and reverse circuit, which is a prior art and will not be described in detail here.

[0034] The fixed seat detection circuit is arranged on the fixed positioning seat 7, and is used to send out a detection signal 1 when there are steel bars on the fixed positioning seat 7. The movable seat detection circuit is arranged on the movable positioning seat 8, and is used to send out a detection signal 2 when there are steel bars on the movable positioning seat 8. The trigger circuit 15 is connected to the output ends of the fixed seat detection circuit and the movable seat detection circuit, and sends out a trigger signal in response to the detection signal 1 or in response to the detection signal 1 and the detection signal 2 at the same time. The controller 16 is coupled to the output end of the trigger circuit 15, and controls the drive motor 603 to rotate forward, flip, or stop through the forward and reverse control circuit 17 in response to the trigger signal.

[0035] The fixed seat detection circuit includes a distance sensor 11 and a voltage comparison circuit 12 coupled to the distance sensor 11, and the output end of the voltage comparison circuit 12 is coupled to the trigger circuit 15. The movable seat detection circuit includes a distance sensor 2 13 and a voltage comparison circuit 2 14 coupled to the distance sensor 2 13, and the output end of the voltage comparison circuit 2 14 is coupled to the trigger circuit 15. The voltage comparison circuit 12 and the voltage comparison circuit 2 14 are both voltage comparators.

[0036] The trigger circuit 15 is an RS trigger, the CP pin of the RS trigger is connected to a power setting, the S pin of the RS trigger is coupled to the output end of the voltage comparison circuit 1 12, and the R pin of the RS trigger is coupled to the output end of the voltage comparison circuit 2 14. It should be noted that a capacitor C1 is connected in parallel between the output end of the voltage comparison circuit 2 14 and the R pin of the RS trigger. The controller 16 is a 51 series single-chip microcomputer, and the output pins Q and Q' pins of the RS trigger are coupled to the input ends of the 51 series single-chip microcomputer.

[0037] like Figure 3As shown, the electric slide rail 6 is transmission-connected with two slide seats 602 that are displaced toward or away from each other, and the movable positioning seat 8 is fixedly connected to the slide seat 602. Specifically, the electric slide rail 6 includes a track 601 fixedly connected to the base 5, a drive motor 603 fixedly connected to one end thereof, and a screw rod rotatably connected to the track 601 and transmission-connected to the output shaft of the drive motor 603. The screw rod is provided with two threads with opposite rotation directions, and the two slide seats 602 are respectively connected to the two threads. The fixed positioning seat 7 and the movable positioning seat 8 both include a support seat 801, a splint 802, and a bolt 803 that penetrates the splint 802 and is threadedly connected to the support seat 801. The top surface of the support seat 801 is recessed downward to form a V-shaped groove 8011, and a plane groove 8012 is provided at the bottom of the V-shaped groove 8011. The distance sensor 11 and the distance sensor 2 13 are fixedly connected to the plane groove 8012.

[0038] When the utility model is used, the operator only needs to place the steel bar to be marked on the fixed positioning seat 7, and through the V-shaped groove 8011 on the support seat 801 in the fixed positioning seat 7, the outer ring specifications of the steel bar can be adapted to achieve effective support. At this time, the distance sensor 11 will detect that the distance has changed, so it sends a distance signal 1 to the voltage comparison circuit 12 for comparison. After determining that it is in compliance, it will send a detection signal 1 to the trigger circuit 15. When the trigger circuit 15 only receives the detection signal 1, it will send a specific trigger signal to the controller 16, so that the controller 16 controls the drive motor 603 to rotate forward through the forward and reverse control circuit 17, and then the two slides 602 on the electric slide rail 6 move toward each other until the movable positioning seat 8 is driven to support the two ends of the steel bar. At this time, the distance above the distance sensor 2 13 also changes, thereby sending a distance signal 2 to the voltage comparator 2. After the voltage comparator 2 compares and finds that it is in compliance, it will send a detection signal 2 to the trigger circuit 15. The trigger circuit 15 receives the detection signal 1 and the detection signal 2 at the same time, and will output The trigger signal of the prohibition instruction is given to the controller 16, and the controller 16 directly controls the drive motor 603 to stop working. Subsequently, by tightening the bolt 803, the clamping plate 802 is clamped on the support seat 801 to clamp the steel bar, and the dotting mechanism 10 is directly displaced in the length direction of the transmission mechanism 9 to realize dotting marking of the steel bar, and finally the steel bar is taken away, so that the distance sensor 11 and the distance sensor 2 13 simultaneously detect that there is no steel bar above and then send out the distance signal 1 and the distance signal 2, the voltage comparison circuit 1 12 and the voltage comparison circuit 2 14 receive and simultaneously send out the low-level detection signal 1 and the detection signal 2, at this time, the capacitor connected in parallel with the voltage comparator 2 discharges, so that the detection signal 2 rises again to a high-level signal, so that the trigger circuit 15 can send out a trigger signal of clearing to the controller 16, and the controller 16 controls the drive motor 603 to rotate in the opposite direction, so that the slide seat 602 stops moving after sliding for a period of time. In this way, the steel bar gauge can be adapted to steel bars of various length specifications, and there is no need for the operator to manually adjust, so that steel bars of various length specifications can be effectively supported.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel bar gauge, characterized in that: The invention comprises a base (5), an electric slide rail (6) fixedly connected to the base (5), a fixed positioning seat (7) fixedly connected to the base (5) and located in the middle of the electric slide rail (6), and two movable positioning seats (8); the electric slide rail (6) is transmission-connected with two slide seats (602) that move toward or away from each other; the movable positioning seat (8) is fixedly connected to the slide seat (602); the movable positioning seat (8) and the fixed positioning seat (7) are both provided with detection circuits, and the detection circuits are used to control the forward and reverse rotation and the start and stop operation of a driving motor (603) in the electric slide rail (6).

2. A steel bar gauge according to claim 1, characterized in that: The electric slide rail (6) comprises a track (601) fixedly connected to a base (5), a drive motor (603) fixedly connected to one end thereof, and a screw rod rotatably connected to the track (601) and drivingly connected to an output shaft of the drive motor (603), wherein the screw rod is provided with two threads with opposite rotation directions, and the two slide seats (602) are respectively threadedly connected to the two threads.

3. A steel bar gauge according to claim 1 or 2, characterized in that: The detection circuit comprises a fixed seat detection circuit, a movable seat detection circuit, a trigger circuit (15), a controller (16), and a forward and reverse control circuit (17); The fixed seat detection circuit is arranged on the fixed positioning seat (7) and is used to send a detection signal when a steel bar is present on the fixed positioning seat (7); The movable seat detection circuit is arranged on the movable positioning seat (8) and is used to send out a second detection signal when a steel bar is present on the movable positioning seat (8); The trigger circuit (15) is connected to the output ends of the fixed seat detection circuit and the movable seat detection circuit, and sends a trigger signal in response to the detection signal 1 or in response to the detection signal 1 and the detection signal 2 simultaneously; The controller (16) is coupled to the output end of the trigger circuit (15), and controls the drive motor (603) to rotate forward, reverse, or stop through the forward and reverse control circuit (17) in response to the trigger signal.

4. A steel bar gauge according to claim 3, characterized in that: The fixed seat detection circuit comprises a distance sensor (11) and a voltage comparison circuit (12) coupled to the distance sensor (11), wherein the output end of the voltage comparison circuit (12) is coupled to a trigger circuit (15).

5. A steel bar gauge according to claim 3, characterized in that: The movable seat detection circuit comprises a second distance sensor (13) and a second voltage comparison circuit (14) coupled to the second distance sensor (13), wherein the output end of the second voltage comparison circuit (14) is coupled to a trigger circuit (15).

6. A steel bar gauge according to claim 3, characterized in that: The trigger circuit (15) is an RS trigger, the CP pin of the RS trigger is electrically connected, the S pin of the RS trigger is coupled to a fixed seat detection circuit, and the R pin of the RS trigger is coupled to a movable seat detection circuit.

7. A steel bar gauge according to claim 3, characterized in that: The controller (16) is a 51 series single chip microcomputer.

8. A steel bar distance gauge according to claim 1, characterized in that: The fixed positioning seat (7) and the movable positioning seat (8) both comprise a support seat (801), a clamping plate (802), and a bolt (803) penetrating the clamping plate (802) and threadedly connected to the support seat (801).

9. A steel bar distance gauge according to claim 8, characterized in that: The top surface of the support seat (801) is recessed downward to form a V-shaped groove (8011).

10. A steel bar distance gauge according to claim 9, characterized in that: A plane groove (8012) is formed at the bottom of the V-shaped groove (8011).

Images