Tension meter calibrating device

Abstract

The utility model discloses a tensiometer calibrating device, which comprises a wire rod, a power assembly, and a swing arm and a transmission arm which are arranged on the same rotating shaft, two ends of the wire rod are respectively a fixed end and a movable end, and the movable end of the wire rod is connected to the swing arm; the power assembly drives the swing arm to swing through the transmission arm and the rotating shaft so as to stretch the wire, and the transmission arm, the rotating shaft and the swing arm are combined into a labor-saving lever. A force sensor is arranged at one end of the wire rod and correspondingly detects the tension of the stretched wire rod. The movable end of the wire rod is hinged to the swing arm, and the fixed end of the wire rod is hinged to the fixed point column. When the swing arm swings, the movable end and the fixed end of the wire rod can adjust the angle in a self-adaptive mode. According to the tension meter calibrating device, the power of the power mechanism required by the tension meter calibrating device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tensiometer calibration, in particular to a tensiometer calibration device. Background Art

[0002] A wire tensiometer is an instrument used to measure the tightness of wire. To ensure accurate measurements, the tensiometer must be calibrated regularly. During calibration, a calibration device applies a certain amount of tension to stretch the wire. The tensiometer then measures the tension after stretching and compares it with the tension measured by the force sensor. Because different types of tensiometers must be calibrated, the calibration device sometimes requires a higher force. Consequently, the power mechanism used in the calibration device must be high-powered, increasing the cost of the calibration device. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a tensiometer calibration device that can reduce the power of the power mechanism required by the tensiometer calibration device.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a tension gauge calibration device, which includes a wire, a power assembly, and a swing arm and a transmission arm installed on the same rotating shaft. The two ends of the wire are a fixed end and a movable end respectively, and the movable end of the wire is connected to the swing arm; the power assembly drives the swing arm to swing through the transmission arm and the rotating shaft, thereby stretching the wire, and the transmission arm, rotating shaft and swing arm are combined into a force-saving lever; a force sensor is provided at one end of the wire, and the force sensor detects the tension of the wire after it is stretched.

[0005] Furthermore, the movable end of the wire is hingedly connected to the swing arm, and the fixed end of the wire is hingedly connected to the fixed point column; when the swing arm swings, the movable end and the fixed end of the wire can adaptively adjust the angle.

[0006] Furthermore, the rotating shaft is vertically installed on the calibration platform, and the swing arm and the transmission arm are respectively connected to the upper and lower ends of the rotating shaft; the calibration platform is also provided with a support seat, and the fixed column is correspondingly installed on the support seat.

[0007] Furthermore, the power assembly includes a motor and a sliding seat. The motor drives the screw to rotate, and the screw is threadedly engaged with the screw hole on the sliding seat. When the motor rotates, the screw drives the sliding seat to slide along the slide rail; the sliding seat is movably connected to the transmission arm, and when the sliding seat slides, it pushes the transmission arm to swing.

[0008] Furthermore, a transmission wheel is provided on the sliding seat, a sliding groove is provided on the transmission arm, and the transmission wheel is slidably arranged in the sliding groove; when the sliding seat slides, the transmission wheel slides and rolls in the sliding groove and transmits the force of the sliding seat to the transmission arm.

[0009] Furthermore, a torque sensor is provided on the rotating shaft, and a connecting head is provided on the top of the rotating shaft, the shape of which simulates the shape of a bolt; a limit frame is also provided on the support seat; the wrench mouth of the torque wrench can be put on the connecting head, and the tail handle of the torque wrench can be clamped on the limit frame. When the rotating shaft rotates, the torque wrench can be calibrated by the torque sensor.

[0010] Furthermore, the swing arm is detachable, and after the swing arm is disassembled, the connector at the top of the rotating shaft is exposed.

[0011] Furthermore, the fixed point column is detachably mounted on the support seat.

[0012] Furthermore, the limiting frame has a limiting slot, and a support member is provided at the bottom of the limiting slot; when the tail handle of the torque wrench is clamped on the limiting frame, it is correspondingly placed on the support member in the limiting slot, and the height of the support member is adjustable.

[0013] Furthermore, the calibration platform is provided with a guide rail, and the support seat can slide along the guide rail to change the distance between the limit frame and the rotating shaft; a locking mechanism is also provided between the support seat and the guide rail, and the support seat can be fixed on the guide rail through the locking mechanism.

[0014] Beneficial effects: The tensiometer calibration device of the utility model has the following beneficial effects:

[0015] 1) The power assembly stretches the wire through the transmission arm, rotating shaft and swing arm, and the transmission arm, rotating shaft and swing arm are combined into a force-saving lever, so a smaller power assembly can be used to achieve a larger pulling force;

[0016] 2) The tension meter calibration device is equipped with a torque sensor, a connector and a limit bracket. After removing the swing arm, the tension meter calibration device can also be switched to calibrate the torque wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 It is the overall structural diagram of the tensiometer calibration device;

[0018] Attachment Figure 2 This is a schematic diagram of the bottom structure of the tensiometer calibration device;

[0019] Attachment Figure 3 Schematic diagram of the device after the transmission arm and vertex column are removed. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] As attached Figures 1 to 3The tensiometer calibration device includes a wire 1, a power assembly, and a swing arm 3 and a transmission arm 4 mounted on the same rotating shaft 2. The transmission arm 4 can drive the swing arm 3 to swing through the rotating shaft 2. The two ends of the wire 1 are respectively a fixed end 5 and a movable end 6. The fixed end 5 of the wire 1 is relatively fixed, and the movable end 6 of the wire 1 is connected to the swing arm 3. When the swing arm 3 swings, it drives the movable end 6 of the wire 1 to move, thereby stretching the wire 1. The power assembly is connected to the transmission arm 4. The power assembly drives the swing arm 3 to swing through the transmission arm 4 and the rotating shaft 2, thereby stretching the wire 1. The force arm length of the transmission arm 4 is greater than the force arm length of the swing arm 3, so that the transmission arm 4, the rotating shaft 2 and the swing arm 3 are combined into a force-saving lever. As a result, the power assembly can provide a larger pulling force with a smaller power, thereby reducing manufacturing costs.

[0022] As attached Figure 1 As shown in FIG, a force sensor 7 is provided at one end of the wire 1. Specifically, the force sensor 7 is provided at the movable end 6 of the wire 1, and the force sensor 7 is connected to the swing arm 3. When the tensiometer needs to be calibrated, the swing arm 3 swings and stretches the wire 1. The tension of the stretched wire 1 is then measured using the tensiometer. The force sensor 7 can also detect the tension of the stretched wire 1. The measurement value of the force sensor 7 is compared with the measurement value of the tensiometer to calibrate the tensiometer.

[0023] The movable end 6 of the wire 1 is hingedly connected to the swing arm 3. Since the movable end 6 of the wire 1 is provided with a force sensor 7, the force sensor 7 is hingedly connected to the swing arm 3, allowing the force sensor 7 to rotate around the swing arm 3. The fixed end 5 of the wire 1 is hingedly connected to the fixed post 19. The fixed end 5 of the wire 1 is fixed to a rotating ring, which is sleeved on the fixed post 19, allowing the fixed end 5 of the wire 1 to rotate around the fixed post 19. During the swinging process of the swing arm 3, the degree of stretching of the wire 1 varies, and the angle of the wire 1 will also change. Since the movable end 6 of the wire 1 is hingedly connected to the swing arm 3 and the fixed end 5 is hingedly connected to the fixed post 19, the movable end 6 and the fixed end 5 of the wire 1 can adaptively adjust their angles, so that the end of the wire 1 will not bend due to the swinging of the swing arm 3.

[0024] The rotating shaft 2 is vertically mounted on the test platform 8, and the swing arm 3 and the transmission arm 4 are connected to the upper and lower ends of the rotating shaft 2 respectively. Figure 2 As shown in , the swing arm 3 is located above the calibration platform 8, and the transmission arm 4 is located below the calibration platform 8. Correspondingly, the power assembly is also located below the calibration platform 8. A support base 9 is also provided on the calibration platform 8, and a fixed point column 19 is correspondingly installed on the support base 9.

[0025] The power assembly includes a motor 10 and a sliding seat 11. A slide rail is provided under the calibration platform 8, and the sliding seat 11 is installed on the slide rail. The motor 10 drives the screw to rotate through a transmission belt. The sliding seat 11 is provided with a screw hole. The screw is threadedly engaged with the screw hole on the sliding seat 11. When the motor 10 rotates, the sliding seat 11 is driven to slide along the slide rail through the belt and the screw. The sliding seat 11 is movably connected to the transmission arm 4. When the sliding seat 11 slides, it pushes the transmission arm 4 to swing. In addition, a rotatable transmission wheel 12 is provided on the sliding seat 11. A slide groove 13 is provided on the transmission arm 4. The transmission wheel 12 is slidably arranged in the slide groove 13. The slide groove 13 is in the shape of an elongated strip. The width of the slide groove 13 is equivalent to the diameter of the transmission wheel 12, and the length of the slide groove 13 is greater than the diameter of the transmission wheel 12. When the sliding seat 11 slides, the transmission wheel 12 slides in the sliding groove 13 and transmits the force of the sliding seat 11 to the transmission arm 4, so that the sliding seat 11 can drive the transmission arm 4 to swing through the transmission wheel 12 and the sliding groove 13.

[0026] The tensiometer calibrating device of the present invention can not only calibrate the tensiometer, but also calibrate the torque wrench. After long-term use, the torque wrench also needs to be calibrated to see if its measurement is accurate.

[0027] As attached Figure 3 As shown in , a torque sensor 14 is provided on the rotating shaft 2. The torque sensor 14 can detect the torque of the rotating shaft 2. A connector 15 is provided on the top of the rotating shaft 2. The shape of the connector 15 simulates the shape of a bolt, and the connector 15 can be disassembled and replaced to simulate different types of bolts, thereby adapting to different types of torque wrenches. A limit frame 16 is also provided on the support seat 9. When the torque wrench needs to be calibrated, the jaws of the torque wrench can be sleeved on the connector 15, and the tail handle of the torque wrench can be clamped on the limit frame 16. When the rotating shaft 2 rotates, the rotating shaft 2 torques the jaws of the torque wrench through the connector 15. The torque wrench has a display screen that can display the torque magnitude on the jaws of the torque wrench. The torque value measured by the torque sensor 14 is compared with the torque value measured by the torque wrench to calibrate the torque wrench.

[0028] The swing arm 3 is detachable, and after the swing arm 3 is disassembled, the connector 15 at the top of the rotating shaft 2 is exposed. Specifically, a sleeve hole is opened on the swing arm 3, and the shape of the sleeve hole is consistent with the shape of the connector 15, so that the swing arm 3 can be sleeved on the connector 15 through the sleeve hole.

[0029] The fixed point column 19 is detachably mounted on the support base 9. Specifically, a socket is provided on the support base 9, and the fixed point column 19 is installed in the socket of the support base 9 in a pluggable manner.

[0030] The limiting frame 16 has a limiting slot 17 with a support member at its bottom. When the torque wrench's tail handle is engaged with the limiting frame 16, it rests on the support member within the limiting slot 17. The height of the support member is adjustable. Specifically, the limiting frame 16 has two limiting rollers spaced apart, with the limiting slot 17 formed between them. When calibrating a torque wrench, the tail handle is placed between the two limiting rollers.

[0031] The calibration platform 8 is provided with a guide rail 18, one end of which extends toward the location of the rotating shaft 2. The support base 9 can slide along the guide rail 18 to adjust the distance between the limit frame 16 and the rotating shaft 2, thereby accommodating torque wrenches of different lengths. A locking mechanism is also provided between the support base 9 and the guide rail 18, which can secure the support base 9 to the guide rail 18 and fix the support base 9 in its position on the guide rail 18.

[0032] The utility model can calibrate both the tension meter and the torque wrench. Figure 1 As shown in the figure, the swing arm 3 and the fixed column 19 are both installed on the calibration platform 8, the position of the support seat 9 is fixed, the swing arm 3 swings and stretches the wire 1, and the tension of the stretched wire 1 is measured with the tension meter that needs to be calibrated, and the tension measured by the tension meter is compared with the tension value measured by the force sensor 7, so as to calibrate the tension meter.

[0033] When calibrating the torque wrench, Figure 3 As shown in the figure, the swing arm 3 and the fixed column 19 are removed from the calibration platform 8, and then the wrench portion of the torque wrench is put on the connector 15 at the top of the rotating shaft 2, and the tail handle of the torque wrench is placed in the limit groove 17 of the limit frame 16. Then the rotating shaft 2 is rotated to apply a certain torque to the torque wrench, and the torque value measured by the torque sensor 14 is compared with the torque value measured by the torque wrench, so as to calibrate the torque wrench.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A tensiometer calibration device, characterized by: The invention comprises a wire (1), a power assembly, and a swing arm (3) and a transmission arm (4) mounted on the same rotating shaft (2); the two ends of the wire (1) are respectively a fixed end (5) and a movable end (6); the movable end (6) of the wire (1) is connected to the swing arm (3); the power assembly drives the swing arm (3) to swing through the transmission arm (4) and the rotating shaft (2), thereby stretching the wire (1); and the transmission arm (4), the rotating shaft (2) and the swing arm (3) are combined into a force-saving lever; a force sensor (7) is provided at one end of the wire (1), and the force sensor (7) detects the tension of the wire (1) after stretching.

2. A tensiometer calibration device according to claim 1, characterized in that: The movable end (6) of the wire (1) is hingedly connected to the swing arm (3), and the fixed end (5) of the wire (1) is hingedly connected to the fixed point column (19); when the swing arm (3) swings, the movable end (6) and the fixed end (5) of the wire (1) can adjust their angles adaptively.

3. A tensiometer calibration device according to claim 2, characterized in that: The rotating shaft (2) is vertically mounted on a calibration platform (8), and a swing arm (3) and a transmission arm (4) are respectively connected to the upper and lower ends of the rotating shaft (2); a support seat (9) is also provided on the calibration platform (8), and a fixed point column (19) is correspondingly mounted on the support seat (9).

4. A tensiometer calibration device according to claim 3, characterized in that: The power assembly comprises a motor (10) and a sliding seat (11). The motor (10) drives a screw to rotate. The screw is threadedly matched with a screw hole on the sliding seat (11). When the motor (10) rotates, the screw drives the sliding seat (11) to slide along the slide rail; the sliding seat (11) is movably connected to the transmission arm (4). When the sliding seat (11) slides, it pushes the transmission arm (4) to swing.

5. A tensiometer calibration device according to claim 4, characterized in that: The sliding seat (11) is provided with a transmission wheel (12), and the transmission arm (4) is provided with a slide groove (13). The transmission wheel (12) is slidably arranged in the slide groove (13); when the sliding seat (11) slides, the transmission wheel (12) slides and rolls in the slide groove (13) and transmits the action force of the sliding seat (11) to the transmission arm (4).

6. A tensiometer calibration device according to claim 3, characterized in that: The rotating shaft (2) is provided with a torque sensor (14); the top of the rotating shaft (2) is provided with a connecting head (15); the shape of the connecting head (15) simulates the shape of a bolt; the support seat (9) is also provided with a limiting frame (16); the wrench mouth of the torque wrench can be sleeved on the connecting head (15), and the tail handle of the torque wrench can be clamped on the limiting frame (16); when the rotating shaft (2) rotates, the torque wrench can be calibrated by the torque sensor (14).

7. A tensiometer calibration device according to claim 6, characterized in that: The swing arm (3) is detachable, and after the swing arm (3) is detached, the connector (15) on the top of the rotating shaft (2) is exposed.

8. A tensiometer calibration device according to claim 6, characterized in that: The fixed point column (19) is detachably mounted on the support seat (9).

9. A tensiometer calibration device according to claim 6, characterized in that: The limiting frame (16) is provided with a limiting groove (17), and a support member is provided at the bottom of the limiting groove (17); when the tail handle of the torque wrench is clamped on the limiting frame (16), it is correspondingly placed on the support member in the limiting groove (17), and the height of the support member is adjustable.

10. A tensiometer calibration device according to claim 6, characterized in that: A guide rail (18) is provided on the calibration platform (8), and the support seat (9) can slide along the guide rail (18) to change the distance between the limit frame (16) and the rotating shaft (2); a locking mechanism is also provided between the support seat (9) and the guide rail (18), and the support seat (9) can be fixed on the guide rail (18) through the locking mechanism.

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