CN112729668A - Sensor pre-tightening device of large-scale small-load force measuring equipment - Google Patents
Sensor pre-tightening device of large-scale small-load force measuring equipment Download PDFInfo
- Publication number
- CN112729668A CN112729668A CN202011549849.6A CN202011549849A CN112729668A CN 112729668 A CN112729668 A CN 112729668A CN 202011549849 A CN202011549849 A CN 202011549849A CN 112729668 A CN112729668 A CN 112729668A
- Authority
- CN
- China
- Prior art keywords
- sensor
- steel wire
- wire rope
- adjusting screw
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A sensor pre-tightening device of a large-scale small-load force measuring device comprises a sensor, a sensor fixed end screw rod, a sensor floating end screw rod, a bidirectional nut, a steel wire rope adjusting screw rod, a steel wire rope and a tightening screw. The sensor is fixed on the fixed frame base through a tensioning screw, threads are arranged at two ends of a sensor pull rod, one end of the sensor pull rod is in threaded connection with the high-precision sensor, the other end of the sensor pull rod is in threaded connection with a bidirectional nut, the other end of the bidirectional nut is in left-handed threads, a steel wire rope adjusting screw is also in left-handed threads, and the other end of the bidirectional nut is in threaded connection with the steel wire rope adjusting screw through the left. One end of the steel wire rope is connected with the steel wire rope adjusting screw rod, and the other end of the steel wire rope is connected with the tensioning screw. The distance between the fixed frame and the floating frame is constant all the time. The bidirectional nut is rotated around the axis, and the matching length of the sensor pull rod and the steel wire rope adjusting screw rod in the bidirectional nut is simultaneously extended or shortened, so that the tightness state of the steel wire rope is changed, the sensor is loaded or unloaded, and the positions of the fixed frame, the floating frame and the sensor do not need to be changed.
Description
Technical Field
The invention relates to a sensor pre-tightening device of a large-scale small-load force-measuring device, which is used for applying a pre-tightening load to a sensor in a force-measuring device.
Background
An assembled force-measuring device generally consists of a fixed frame, a floating frame, a high-precision sensor and the like. The fixed frame is used for being fixed with the basis, and floating frame is fixed with the model to be measured, connects through biography power subassembly between fixed frame and the floating frame, and when having the air current through, the air current acts on the force of model and passes to the high accuracy sensor of biography power subassembly through floating frame, measures the force that acts on the model to be measured by the output of sensor. In order to minimize the interference of large loads such as model weight and lift force on small transverse loads, on the premise of meeting the requirements of strength and rigidity, a force transmission assembly between the sensor and the floating frame is rigid only in the force transmission direction, and flexible connection is used in other directions to inhibit the interference of other components. The invention is used in a large-scale small-load force measuring device, and in order to eliminate the interference of the weight direction of a large-scale heavy model, the sensor and the floating frame are connected by the steel wire rope, so that the sensor can only bear the load in the tension direction and is flexible in other directions, and the force measuring precision of the sensor is improved.
Compared with other force transmission assemblies such as the spring piece, the flexible beam and the like, the force transmission assemblies are in rigid connection with the sensor, the sensor is applied with load through threaded pre-tightening in an initial state, therefore, a pre-tightening device is not required to be additionally arranged, the elasticity of the steel wire rope is very large, the full-scale displacement value of the sensor is less than 1mm, and therefore, very large sensor output can be caused through tiny displacement change. In order to ensure that the sensor is not overloaded during installation, the length of the steel wire rope is set to be slightly longer, so that the sensor is in an initial state and has no load. In order to prevent the sensor from being loaded all the time, the steel wire rope of the sensor is loosened when force measurement is not needed, and the load is unloaded. When the force is measured, a certain load is required to be applied to the sensor, so that the displacement generated after the sensor is subjected to small disturbance can ensure that the reading of the sensor is changed, and the function is realized by a pre-tightening device.
Disclosure of Invention
The technical problem of the invention is solved: the device overcomes the defects of the prior art, provides a large-scale small-load force-measuring equipment sensor pre-tightening device, and solves the problem that the sensor has no load in an initial state due to the flexible connection of the steel wire ropes with large elasticity under the condition that the positions of the fixed frame, the floating frame, the sensor, the force transmission assembly and the like are not changed. When the force is measured, the sensor is required to have reading change when being subjected to a tiny force value, and a pre-tightening load is applied to the sensor through the device, so that the sensor can accurately sense the tiny load force value, and the force measurement precision is ensured.
The technical scheme adopted by the invention is as follows:
a pre-tightening device for a sensor of a large-scale small-load force-measuring device comprises: the device comprises a fixed frame, a floating frame, a sensor pull rod, a two-way nut, a steel wire rope adjusting screw, a steel wire rope tensioning screw and a sensor tensioning screw;
one end of the sensor is fixed on the fixed frame through a sensor tensioning screw, the other end of the sensor is in threaded connection with one end of a sensor pull rod, both ends of the sensor pull rod are provided with screw rods, and the other end of the sensor pull rod is connected with a steel wire rope adjusting screw rod through a bidirectional nut; one end of the steel wire rope is fixedly connected with the steel wire rope adjusting screw rod, and the other end of the steel wire rope is fixed on the floating frame through a steel wire rope tensioning screw; and the bidirectional nut is rotated in different directions to apply pre-tightening load or unload the sensor.
Furthermore, the sensor pull rod, the two-way nut, the steel wire rope adjusting screw rod, the steel wire rope tensioning screw and the sensor tensioning screw are coaxially arranged.
Furthermore, one end of the bidirectional nut, which is connected with the steel wire rope adjusting screw rod, is a left-handed internal thread, and the steel wire rope adjusting screw rod is a left-handed external thread.
Further, the distance L between the fixed frame and the floating frame is always constant regardless of whether the wire rope is slack or taut.
Furthermore, when the bidirectional nut is rotated clockwise around the axis for one circle, the matching length of the sensor pull rod and the steel wire rope adjusting screw rod in the bidirectional nut is increased by one circle, the bidirectional nut drives the steel wire rope adjusting screw rod to move towards the fixed frame, the bidirectional nut is continuously rotated in the same direction, and the steel wire rope adjusting screw rod continuously moves towards the fixed frame, so that the steel wire rope is gradually tensioned from a loose state.
Furthermore, when the steel wire rope is loosened, the sensor cannot sense the pulling force, the output of the sensor is unchanged, and the zero load is always obtained.
Furthermore, after the steel wire rope is gradually tensioned, the sensor starts to bear the tension load of the steel wire rope, the output signal of the sensor is observed, the bidirectional nut is slowly rotated, the output of the sensor is gradually changed from zero to the required pre-tensioning load, and the bidirectional nut is stopped rotating.
Further, the bidirectional nut is rotated anticlockwise, the steel wire rope adjusting screw drives the steel wire rope to move towards the floating frame, and the steel wire rope is gradually changed from a tensioned state to a relaxed state; and observing the output signal of the sensor, and gradually reducing the output of the sensor until the zero load state is output, wherein the pre-tightening load of the sensor is released.
Further, the clockwise direction refers to a clockwise direction when facing the fixed frame from the floating frame; the counter-clockwise direction is opposite to the clockwise direction.
Further, the length of the steel wire rope should satisfy: in an initial state, after the steel wire rope is connected with the sensor, the sensor is not loaded; the bidirectional nut drives the steel wire rope adjusting screw rod to move to the leftmost end of the sensor pull rod, and when the matching length of the sensor pull rod and the steel wire rope adjusting screw rod in the bidirectional nut is the maximum length, the steel wire rope is in a tensioning state, and full-scale output of the sensor can be achieved.
Compared with the prior art, the invention has the following advantages:
(1) the device can always keep the relative positions of the sensor, the floating frame and the fixed frame unchanged, and ensure that the installation position of the model is unique.
(2) The device can be adjusted in two directions, and when the stress of the sensor needs to be released, the sensor is loosened for a certain distance, so that the sensor is protected from overload.
(3) The device is designed in a modular mode, can be simultaneously applied to a plurality of sensors, and is convenient to install, simple and reliable to adjust.
Drawings
FIG. 1 is a schematic diagram of a pretensioning device according to the invention;
fig. 2 is a schematic view of a released state of the wire rope.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As shown in the attached drawings 1 and 2, the invention provides a sensor pre-tightening device of large-scale and small-load force-measuring equipment, which is used for applying pre-tightening load to a sensor in the large-scale and small-load force-measuring equipment.
Specifically, the sensor pre-tightening device comprises a fixed frame 1, a floating frame 2, a high-precision sensor 3, a sensor pull rod 4, a two-way nut 5, a steel wire rope adjusting screw 6, a steel wire rope 7, a steel wire rope tightening screw 8 and a sensor tightening screw 9.
The high-precision sensor 3 is fixed on the base of the fixed frame 1 through a sensor tension screw 9, the other end of the high-precision sensor 3 is connected with the sensor pull rod 4 through threads, both ends of the sensor pull rod 4 are provided with screw rods, and the other end of the sensor pull rod 4 is connected with the left end of the two-way nut 5 through threads.
The other end of the bidirectional nut 5 is a left-handed internal thread, the steel wire rope adjusting screw 6 is a left-handed external thread, and the other end of the bidirectional nut 5 is connected with the steel wire rope adjusting screw 6. One end of a steel wire rope 7 is fixedly connected with the steel wire rope adjusting screw 6, and the other end of the steel wire rope is fixedly connected with a steel wire rope tensioning screw 8. The distance L between the fixed frame 1 and the floating frame 2 is always kept unchanged, so that the model mounted on the floating frame 2 is ensured to be unique, and the force measurement precision is improved.
The sensor pull rod 4, the bidirectional nut 5, the steel wire rope adjusting screw 6, the steel wire rope 7, the steel wire rope tensioning screw 8 and the sensor tensioning screw 9 are coaxially arranged.
When the bidirectional nut 5 rotates clockwise around the axis, the matching length of the sensor pull rod 4 and the steel wire rope adjusting screw 6 in the bidirectional nut 5 is increased by one circle, the bidirectional nut 5 drives the steel wire rope adjusting screw 6 to move leftwards, the bidirectional nut 5 continues to rotate in the same direction, the steel wire rope adjusting screw 6 continues to move leftwards, and therefore the steel wire rope 7 is gradually tensioned from loosening.
When the steel wire rope 7 is gradually tightened, the sensor 3 starts to receive the tension load of the steel wire rope 7, at this time, the output signal of the sensor 3 needs to be observed, the bidirectional nut 5 needs to be slowly rotated, the sensor 3 outputs the gradually changed tension load from zero to the required pre-tightening load, and the bidirectional nut 5 stops rotating.
Similarly, the two-way nut 5 is rotated anticlockwise, the steel wire rope adjusting screw 6 drives the steel wire rope 7 to move rightwards, the steel wire rope 7 is gradually changed from a tensioned state to a relaxed state, the output signal of the sensor 3 is observed, the output of the sensor 3 is gradually reduced until the zero load state is output, and the pre-tightening load of the sensor 3 is released at the moment. By rotating the two-way nut 5 in different directions, the application of a pre-tightening load or unloading of the sensor 3 is achieved.
The clockwise direction means a clockwise direction when facing the fixed frame 1 from the floating frame 2; the counter-clockwise direction is opposite to the clockwise direction.
Because the full-scale displacement change value of the sensor 3 is very small and is less than 1mm, in an initial state, in order to protect the sensor 3 from overload, the length of the steel wire rope 7 is properly kept longer, so that the sensor 3 is not loaded after the steel wire rope 7 is connected with the sensor 3, but the length of the steel wire rope 7 is not too long, the two-way nut 5 is required to drive the adjusting screw 6 to move to the leftmost end of the sensor pull rod 4, and when the matching length of the sensor pull rod 4 and the adjusting screw 6 in the two-way nut 5 is the maximum, the steel wire rope 7 is in a tensioned state and can achieve the full-scale output of the sensor 3.
The pretension device is used in low-speed wind tunnel assembled force measuring equipment, the force measuring equipment is mainly used for measuring the resistance of a model in a wind tunnel when the model is acted by air flow, the equipment is specially designed for the resistance reduction research of sports events (such as racing yachts), the competition is a sports event, so that how to reduce the whole resistance is reduced, the speed is increased, and the time is saved, therefore, the wind tunnel wind resistance is measured by the force measuring equipment, the influences of different postures of athletes on force values are within 10N, and the force measuring equipment needs to be large in size, high in strength and hard in rigidity in order to bear the weight of instruments and a plurality of athletes for competition. The fixed frame of the force measuring device is more than 7 meters in length and about 1 meter in width, the floating frame is 5.5 meters in length and about 0.9 meter in width, the fixed frame is supported with the wind tunnel ground, the competition apparatus and the athlete are fixed on the floating frame, and the wind resistance borne by the competition apparatus and the athlete is transmitted to the fixed frame through the floating frame and a force transmission assembly with a pre-tightening device.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art.
Claims (10)
1. A large-scale small-load force-measuring equipment sensor pre-tightening device is characterized by comprising: the device comprises a fixed frame (1), a floating frame (2), a sensor (3), a sensor pull rod (4), a two-way nut (5), a steel wire rope adjusting screw rod (6), a steel wire rope (7), a steel wire rope tensioning screw (8) and a sensor tensioning screw (9);
one end of the sensor (3) is fixed on the fixed frame (1) through a sensor tensioning screw (9), the other end of the sensor (3) is in threaded connection with one end of the sensor pull rod (4), both ends of the sensor pull rod (4) are provided with screw rods, and the other end of the sensor pull rod (4) is connected with the steel wire rope adjusting screw (6) through a two-way nut (5); one end of a steel wire rope (7) is fixedly connected with a steel wire rope adjusting screw rod (6), and the other end of the steel wire rope (7) is fixed on the floating frame (2) through a steel wire rope tensioning screw (8); by rotating the bidirectional nut (5) in different directions, the application of a pre-tightening load or the unloading of the sensor (3) is realized.
2. The pre-tensioning device for the sensor of the large-scale small-load force-measuring equipment as claimed in claim 1, wherein: the sensor pull rod (4), the two-way nut (5), the steel wire rope adjusting screw rod (6), the steel wire rope (7), the steel wire rope tightening screw (8) and the sensor tightening screw (9) are coaxially arranged.
3. The pre-tensioning device for the sensor of the large-scale small-load force-measuring equipment as claimed in claim 1, wherein: one end of the two-way nut (5) connected with the steel wire rope adjusting screw rod (6) is a left-handed internal thread, and the steel wire rope adjusting screw rod (6) is a left-handed external thread.
4. The pre-tensioning device for the sensor of the large-scale small-load force-measuring equipment as claimed in claim 1, wherein: the distance L between the fixed frame (1) and the floating frame (2) is always kept constant no matter the steel wire rope is loosened or tightened.
5. A large scale, small load force measuring device transducer pretensioning apparatus according to claim 2, characterized in that: every time the bidirectional nut (5) rotates for one circle in the clockwise direction around the axis, the matching lengths of the sensor pull rod (4) and the steel wire rope adjusting screw (6) in the bidirectional nut (5) are respectively increased for one circle, the bidirectional nut (5) drives the steel wire rope adjusting screw (6) to move towards the fixed frame (1), the bidirectional nut (5) continues to rotate in the same direction, the steel wire rope adjusting screw (6) continues to move towards the fixed frame (1), and therefore the steel wire rope (7) gradually changes from a loose state to a taut state.
6. A large scale small load force measuring device sensor pretensioning apparatus according to claim 5, characterized in that: when the steel wire rope (7) is loosened, the sensor (3) cannot sense the pulling force, the output of the sensor (3) is unchanged, and the zero load is always obtained.
7. A large scale small load force measuring device sensor pretensioning apparatus according to claim 5, characterized in that: after the steel wire rope (7) is gradually tensioned, the sensor (3) starts to bear the tension load of the steel wire rope (7), the output signal of the sensor (3) is observed, the bidirectional nut (5) is slowly rotated, the output of the sensor (3) gradually changes from zero to the required pre-tightening load, and the rotation of the bidirectional nut (5) is stopped.
8. A large scale small load force measuring device sensor pretensioning apparatus according to claim 5, characterized in that: the bidirectional nut (5) is rotated anticlockwise, the steel wire rope adjusting screw (6) drives the steel wire rope (7) to move towards the floating frame (2), and the steel wire rope (7) is gradually changed from a tensioned state to a relaxed state; and observing the output signal of the sensor (3), wherein the output of the sensor (3) gradually becomes smaller until the zero load state is output, and the pretension load of the sensor (3) is released.
9. The pre-tensioning device for the sensor of the large-scale small-load force-measuring equipment as claimed in claim 8, wherein: the clockwise direction refers to the clockwise direction when the floating frame (2) faces the fixed frame (1); the counter-clockwise direction is opposite to the clockwise direction.
10. The pre-tensioning device for the sensor of the large-scale small-load force-measuring equipment as claimed in claim 8, wherein: the length of the steel wire rope (7) is required to satisfy the following conditions: in an initial state, after the steel wire rope (7) is connected with the sensor (3), the sensor (3) is not loaded; the bidirectional nut (5) drives the steel wire rope adjusting screw rod (6) to move to the leftmost end of the sensor pull rod (4), and when the matching length of the sensor pull rod (4) and the steel wire rope adjusting screw rod (6) in the bidirectional nut (5) is the maximum, the steel wire rope (7) is in a tensioning state and can achieve full-scale output of the sensor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549849.6A CN112729668B (en) | 2020-12-24 | 2020-12-24 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549849.6A CN112729668B (en) | 2020-12-24 | 2020-12-24 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112729668A true CN112729668A (en) | 2021-04-30 |
| CN112729668B CN112729668B (en) | 2022-03-04 |
Family
ID=75605344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011549849.6A Active CN112729668B (en) | 2020-12-24 | 2020-12-24 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112729668B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439825A (en) * | 2022-02-14 | 2022-05-06 | 天津市天锻压力机有限公司 | Butt nut and butt-joint type pull rod for large hydraulic press |
| CN115504396A (en) * | 2022-10-24 | 2022-12-23 | 苏州艾沃意特汽车设备有限公司 | Two-side fine adjustment device of safety mechanism of lifting machine and lifting machine |
| CN115854694A (en) * | 2022-11-30 | 2023-03-28 | 乳山市东方硅胶有限公司 | Drying equipment and drying method for production and processing of silica gel drying agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097586A1 (en) * | 2011-01-20 | 2012-07-26 | 长沙中联重工科技发展股份有限公司 | Steel cable pre-tension device |
| CN106441680A (en) * | 2016-12-10 | 2017-02-22 | 李�诚 | Long-distance steel wire rope pulling force detection system |
| CN110207876A (en) * | 2019-06-20 | 2019-09-06 | 中船重工海为郑州高科技有限公司 | A kind of Miniature steel wire rope tension sensor |
| CN111208022A (en) * | 2019-07-19 | 2020-05-29 | 中国矿业大学 | Tension vibration detection and analysis method and device under radial impact of transverse steel wire rope |
-
2020
- 2020-12-24 CN CN202011549849.6A patent/CN112729668B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097586A1 (en) * | 2011-01-20 | 2012-07-26 | 长沙中联重工科技发展股份有限公司 | Steel cable pre-tension device |
| CN106441680A (en) * | 2016-12-10 | 2017-02-22 | 李�诚 | Long-distance steel wire rope pulling force detection system |
| CN110207876A (en) * | 2019-06-20 | 2019-09-06 | 中船重工海为郑州高科技有限公司 | A kind of Miniature steel wire rope tension sensor |
| CN111208022A (en) * | 2019-07-19 | 2020-05-29 | 中国矿业大学 | Tension vibration detection and analysis method and device under radial impact of transverse steel wire rope |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439825A (en) * | 2022-02-14 | 2022-05-06 | 天津市天锻压力机有限公司 | Butt nut and butt-joint type pull rod for large hydraulic press |
| CN115504396A (en) * | 2022-10-24 | 2022-12-23 | 苏州艾沃意特汽车设备有限公司 | Two-side fine adjustment device of safety mechanism of lifting machine and lifting machine |
| CN115504396B (en) * | 2022-10-24 | 2023-09-22 | 苏州艾沃意特汽车设备有限公司 | Double-side fine adjustment device of safety mechanism of lifting machine and lifting machine |
| CN115854694A (en) * | 2022-11-30 | 2023-03-28 | 乳山市东方硅胶有限公司 | Drying equipment and drying method for production and processing of silica gel drying agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112729668B (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112729668B (en) | Sensor pre-tightening device of large-scale small-load force measuring equipment | |
| CN100337105C (en) | Device for calibrating parallel force transducer in six dimensions | |
| US7313975B1 (en) | Apparatus and method for measuring tension in guy wires | |
| CN109489882B (en) | Cable-stayed bridge cable anchoring and cable force testing device and method for large-size model test | |
| CN201417187Y (en) | Rod-cable force measurer | |
| US20030074978A1 (en) | Method of monitoring/measuring rigging loads | |
| CN109630629B (en) | Modular wire winding system of wire driving mechanism | |
| KR101361737B1 (en) | Strain measurement apparatus using pressure sensor of semiconductor type | |
| CN104280163A (en) | Piezoelectric sensor pre-tightening device | |
| CN108016964B (en) | Elevator hoisting rope monitoring device and method | |
| CN103420296A (en) | Super-lifting device, front pre-tightened steel wire rope length control system and crane | |
| CN201340316Y (en) | Winch tension measuring device | |
| CN201083535Y (en) | Lightweight counterweight-free calibrating equipment | |
| CN113028011A (en) | Device for adjusting guide and elastic tension of steel wire rope | |
| CN204389083U (en) | A kind of model test suspension cable anchoring and cable tension test device | |
| CN110761186B (en) | Efficient fastening method for cable clamp screw of main cable of suspension bridge | |
| CN114674479A (en) | Real-time monitoring method and monitoring device for cable force of suspender | |
| CN208238996U (en) | A kind of wireless pulling force sensor | |
| CN215558612U (en) | Overload-proof brake device | |
| CN218860105U (en) | Steel wire rope tension monitoring and controlling system | |
| CN211013322U (en) | Fiber grating tension sensor | |
| CN114161813B (en) | Under-driven tension-controllable net stretching clamp and application method thereof | |
| CN218098118U (en) | Double-roller anchor chain tension measuring device for engineering ship | |
| CN211693372U (en) | Miniature controllable linear tension device | |
| ES2246618B1 (en) | TOWING ASSEMBLY, AND EQUIPMENT AND PROCEDURE FOR MEASURING THE TENSION OF A CABLE OF A TOWING ASSEMBLY. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |