CN114279630A - Electric leveling torque calibrating device - Google Patents
Electric leveling torque calibrating device Download PDFInfo
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- CN114279630A CN114279630A CN202111654417.6A CN202111654417A CN114279630A CN 114279630 A CN114279630 A CN 114279630A CN 202111654417 A CN202111654417 A CN 202111654417A CN 114279630 A CN114279630 A CN 114279630A
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- electric leveling
- leveling mechanism
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Abstract
The invention discloses an electric leveling torque calibrating device which comprises an electric leveling mechanism fixed on a rack, wherein the output end of the electric leveling mechanism is connected with the rear end of a detected sensor and the front end of the detected sensor is connected with a calibrating rod assembly through a square tenon and a square hole; the electric leveling mechanism comprises a motor, a speed reducer, a transmission shaft and a transfer shaft which are coaxially connected in sequence in a transmission manner; the motor is connected with a motor controller and an electronic hand wheel through a cable; the verification rod assembly comprises a verification rod, a steel wire rope, a hanging rack and weights. According to the invention, through the arranged electric leveling mechanism, the force arm error caused by the gap between the detected sensor and the verification rod is avoided under the state that the verification rod is loaded with weights, the standard torque value applied to the detected sensor by the verification device is ensured, and the verification result precision is improved.
Description
Technical Field
The invention belongs to a calibrating device, relates to a torque calibrating device, and particularly relates to an electric leveling torque calibrating device.
Background
At present, one of the verification methods for the torque sensor is to perform verification by using a lever to apply a weight. The principle of applying a weight detection mode to the lever is as follows: torque = effective moment arm x force perpendicular to the effective moment arm. The structure corresponding to the calibrating device is that one end of the sensor is vertically connected with the rod body of the calibrating rod through a square hole and a square tenon, and a weight is applied to one end of the calibrating rod. And calculating a standard torque value according to the weight of the weight and the length theory of the verification rod. And then comparing the standard torque value with a torque value displayed on a digital display instrument connected with the detected torque sensor to obtain a verification result. Since the standard torque value is obtained by the effective arm x the weight of the weight, the accuracy of the standard torque value is ensured by the precision of the weight and the length of the effective arm. The weight of the weight and the rod length of the verification rod can be measured to ensure the precision. However, in the verification process, one end of the sensor is usually connected with the rod body of the verification rod in an inserting mode through the square hole and the square falcon to transmit torque, and a certain gap inevitably exists between the square hole and the square falcon, so that after the weight is applied to one end of the verification rod, the verification rod inevitably inclines towards the end, to which the weight is applied, under the influence of the gap. And because the force application direction of the weight is always vertical and downward, the force application direction of the weight is not vertical to the force application direction of the weight after the detection rod is inclined, and further the actual effective force arm error is caused. Finally, the standard torque value generates errors, and the accuracy of the sensor verification result cannot be ensured.
Disclosure of Invention
In view of this, the invention provides an electric leveling torque calibrating device, which can adjust a calibrating rod to be horizontal again through a leveling mechanism, thereby eliminating the error of an effective force arm.
The technical scheme adopted by the invention is as follows: the utility model provides an electronic leveling moment of torsion calibrating installation which characterized in that: the device comprises an electric leveling mechanism fixed on a rack, wherein the output end of the electric leveling mechanism is connected with the rear end of a detected sensor, and the front end of the detected sensor is connected with a detection rod assembly; square holes are formed in the two ends of the sensor to be detected;
the electric leveling mechanism comprises a motor, a speed reducer, a transmission shaft and a transfer shaft which are coaxially connected in sequence in a transmission manner; the front end of the transfer shaft is provided with a square falcon which is connected with a square hole at the rear end of the sensor to be detected; the motor is connected with a motor controller and an electronic hand wheel through a cable;
the detection rod assembly comprises a detection rod, a steel wire rope, a hanging frame and weights; examine the middle pole body of deciding the pole and be equipped with the side falcon, with the square hole that is detected the sensor front end is connected, the stores pylon passes through wire rope and is connected with the one end of examining the pole, and the weight is placed on the stores pylon.
Further, all connect through side falcon and square hole between motor and speed reducer, speed reducer and the transmission shaft, be connected through the parallel key between transmission shaft and the change shaft.
Further, the electric leveling mechanism is fixed on a frame, and the frame comprises four vertical plate surfaces, namely a front vertical plate surface, a rear vertical plate surface, a left vertical plate surface, a right vertical plate surface, a left vertical plate surface and a right vertical plate surface; the electric leveling mechanism is fixedly penetrated on the front and rear plate surfaces of the frame, the side surface of the frame is fixed on the vertical rack, and the output end of the electric leveling mechanism is horizontally suspended.
Further, the pole length inequality of the both sides of examination pole top falcon, that end that the pole length is shorter is equipped with the balancing weight.
The invention has the beneficial effects that: through the arranged electric leveling mechanism, the force arm error caused by the gap between the detected sensor and the calibrating rod is avoided when the calibrating rod is in a state of loading weights, the standard torque value applied to the detected sensor by the calibrating device is ensured, and the precision of the calibrating result is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an exploded view of the structure of the electric leveling mechanism of the present invention.
Fig. 3 is a schematic diagram of the construction of an assay assembly of the invention.
In the figure: 1. an electric leveling mechanism, 101, a motor, 102, a speed reducer, 103, a transmission shaft, 104, a frame, 105, a bearing, 106, a flat key, 107, a bracket and 108 are connected with a shaft in a rotating mode; 2. a calibration rod assembly, 201, a calibration rod, 202, a steel wire rope, 203, a hanging rack, 204, a weight, 205, a square falcon, 206 and a balancing weight; 3. detected sensor, 4 electronic hand wheel, 5 motor controller.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the electric leveling torque calibrating device includes an electric leveling mechanism 1, a sensor 3 to be detected mounted at an output end of the electric leveling mechanism 1, and a calibrating rod assembly 2 for providing a torque force for the sensor 3 to be detected.
As shown in fig. 1-2, the electric leveling mechanism 1 is composed of a motor 101, a speed reducer 102, a transmission shaft 103, a frame 104, a bearing 105, a flat key 106, a bracket 107 and a transfer shaft 108.
The side plate surfaces of the frame 104 are fastened to the brackets 107 by screws.
The motor 101 and the speed reducer 102 are in shaft connection transmission. The body of the speed reducer 102 is fixed to the rear end of the frame 104 by screws.
A hexagon nut is fixed on the machine body at the output end of the speed reducer 102, and the output shaft of the speed reducer 102 penetrates through the hexagon nut. A hexagonal hole is formed in the rear side plate surface of the frame 104, a hexagonal nut of the speed reducer 102 is clamped in the hexagonal hole, and the output end of the speed reducer 102 extends out of the hexagonal hole to the other side of the frame 104. The hexagonal nut of the speed reducer 102 and the hexagonal hole of the frame 104 are matched, so that the output shaft of the speed reducer 102 can be always kept in a horizontal state and cannot be inclined downwards under the action of gravity.
An output shaft of the speed reducer 102 is an output square falcon. The rear end of the transmission shaft 103 is provided with a corresponding square hole which is connected with an output square tenon of the speed reducer 102. Output side falcon and square hole cooperation are used for transmitting the moment of torsion. The shaft body of the transmission shaft 103 is connected to the front side plate surface of the frame 104 through a bearing 105. The bearing 105 is snap fitted on the front side plate surface of the frame 104.
The front end of the transmission shaft 103 is provided with a key groove, and a flat groove 106 is arranged in the key groove. The rear end of the transfer shaft 108 is provided with a corresponding key groove which is connected with the flat key 106 at the front end of the transmission shaft 103 and used for transmitting torque. The front end of the adapter shaft 108 is provided with a square falcon which is used for being connected and matched with the rear end of the sensor 3 to be detected.
The electric leveling mechanism 1 is driven by a motor 101, transmits torque to a speed reducer 102, an output tennons at the front end of the speed reducer 102 transmits the torque to a transmission shaft 103, the transmission shaft 103 transmits the torque to a transfer shaft 108 through a flat key 106, and finally the transfer shaft 108 outputs the torque to the detected sensor 3.
As shown in fig. 1, an electronic handwheel 4 and a motor controller 5 are arranged on the frame 1. The electronic hand wheel 4 and the motor controller 5 are connected with the motor 101 through cables. The operator rotates the electric handwheel 4 to operate the angle of motion of the motor 101 through the motor controller 5.
As shown in fig. 3, the certification rod assembly 2 is composed of a certification rod 201, a steel wire rope 202, a hanging rack 203 and weights 204, and a falcon 205 is arranged in the middle of the rod body of the certification rod 201. The front end of the sensor 3 to be detected is butted against the tennons 205. The detecting rod 201 is connected to the sensor 3 to be detected, and is supposed to be horizontal in a natural state where no torque is applied by the weight 204. If the square falcon 205 is taken as an axis point, the length of one side of the detection rod 201 is larger than that of the other side. The detection rod 201 is leveled only by arranging the corresponding balancing weight 206 at the end with the shorter length. A wire rope 202 is connected to one end of the detection rod 201. The hanger 203 hangs on the steel wire rope 202 and naturally hangs down. The weight 204 is mounted on the hanger 203 for torque loading.
In the operation process further described in conjunction with fig. 1 to 3, when the rear end of the sensor 3 to be detected is mounted on the square falcon of the switching shaft 108, the square falcon 205 at the middle part of the detecting rod 201 is inserted into the square hole at the front end of the sensor 3 to be detected. At this point, weight 204 loading is performed on the pylon 203. Since the sensor 3 to be detected and the calibration rod 201 are connected through the square hole and the square tenon 205, in an ideal state, even if one end of the calibration rod 201 is loaded with the weight 204, the calibration rod 201 should be kept horizontal and vertical to the gravity direction of the weight 204. However, since there is an inevitable gap between the square hole of the sensor 3 and the square hole 205 in the middle of the calibration rod 201, the calibration rod 201 may tilt at a certain angle around the center of the sensor 3 toward the gravity direction of the weight 204, so that the calibration rod 201 is not perpendicular to the force direction, which may cause an error in the standard torque value. The steering of the motor 101 can be adjusted by rotating the electronic hand wheel 4, and then torque is transmitted through the leveling mechanism 1, so that the detection rod 201 slowly rotates to be horizontal until the gravity direction of the weight 204 is vertical to the detection rod 201, and the error of the force arm is eliminated.
The invention relates to a torque sensor calibrating device with an electric leveling mechanism 1, which reduces the moment arm error caused by the non-level of a calibrating rod 201 by electrically adjusting the horizontal state of the calibrating rod 201, thereby influencing the standard torque value applied to a sensor and improving the calibrating precision.
Claims (4)
1. The utility model provides an electronic leveling moment of torsion calibrating installation which characterized in that: the device comprises an electric leveling mechanism fixed on a rack, wherein the output end of the electric leveling mechanism is connected with the rear end of a detected sensor, and the front end of the detected sensor is connected with a detection rod assembly; square holes are formed in the two ends of the sensor to be detected;
the electric leveling mechanism comprises a motor, a speed reducer, a transmission shaft and a transfer shaft which are coaxially connected in sequence in a transmission manner; the front end of the transfer shaft is provided with a square falcon which is connected with a square hole at the rear end of the sensor to be detected; the motor is connected with a motor controller and an electronic hand wheel through a cable;
the detection rod assembly comprises a detection rod, a steel wire rope, a hanging frame and weights; examine the middle pole body of deciding the pole and be equipped with the side falcon, with the square hole that is detected the sensor front end is connected, the stores pylon passes through wire rope and is connected with the one end of examining the pole, and the weight is placed on the stores pylon.
2. The electric leveling torque verification device as claimed in claim 1, wherein: all connect through side falcon and square hole between motor and speed reducer, speed reducer and the transmission shaft, be connected through the parallel key between transmission shaft and the change shaft.
3. The electric leveling torque verification device as claimed in claim 1, wherein: the electric leveling mechanism is fixed on the frame, and the frame comprises four vertical plate surfaces, namely a front vertical plate surface, a rear vertical plate surface, a left vertical plate surface, a right vertical plate surface, a left vertical plate surface and a right vertical plate surface; the electric leveling mechanism is fixedly penetrated on the front and rear plate surfaces of the frame, the side surface of the frame is fixed on the vertical rack, and the output end of the electric leveling mechanism is horizontally suspended.
4. The electric leveling torque verification device as claimed in claim 1, wherein: the pole length inequality of the both sides of examination pole top falcon, that end that the pole length is shorter is equipped with the balancing weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654417.6A CN114279630A (en) | 2021-12-31 | 2021-12-31 | Electric leveling torque calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654417.6A CN114279630A (en) | 2021-12-31 | 2021-12-31 | Electric leveling torque calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114279630A true CN114279630A (en) | 2022-04-05 |
Family
ID=80879376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111654417.6A Pending CN114279630A (en) | 2021-12-31 | 2021-12-31 | Electric leveling torque calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114279630A (en) |
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2021
- 2021-12-31 CN CN202111654417.6A patent/CN114279630A/en active Pending
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