Paddle mold shafting balance thrust calibration device

Abstract

The utility model discloses a paddle mold shafting balance thrust calibration device, which is matched with a shafting comprising a sensor for use, the sensor is electrically connected with an acquisition system, one end of the shafting is a contact end, the shafting is horizontally placed during calibration, the calibration device comprises a thrust applying part, the thrust applying part is provided with a thrust applying end, and the thrust applying end is provided with a thrust applying end. During calibration, the thrust applying end abuts against the contact end in the horizontal direction, the thrust applying part can provide a plurality of known forces so that the thrust applying end can act on the contact end, and the sensor outputs a parameter value corresponding to each known force. The device can provide thrust for a shaft system, and calibration can be carried out when the device is static or the shaft system rotates slowly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the balance calibration related technical field, concretely relates to a kind of paddle model shafting balance thrust calibration device. BACKGROUND

[0002] In the process of developing new ship or propeller, in order to predict its navigation performance, various types of model test need to be carried out, and the most important one is to evaluate the performance indicators of the ship by testing the thrust torque on the shaft of the paddle model. The key equipment for realizing the test of the thrust of the paddle model acting on the shaft system mainly includes shaft type tension-torsion composite sensor, open water dynamometer, self-propelled dynamometer, etc. Generally speaking, these test equipment needs to be calibrated regularly by professional calibration equipment every year, and the equipment should also be calibrated before use, which is the basis for ensuring the effectiveness and accuracy of laboratory test.

[0003] The method used for the calibration of the paddle model shafting balance is usually as follows: considering the limitation that one end of the shaft system needs to be installed with motor and other components, without installing paddle model at the other end of the shaft system, fixing steel wire rope at the other end, and suspending standard weight through pulley, so that the gravity of the weight acts as tension on the end of the shaft system, gradually increasing the load (i.e. the weight of the weight) in order from small to large, comparing the gravity of the weight and the output value of the sensor, correcting the parameters of the sensor to make the test results within the required accuracy range, and performing multi-point verification and repeatability verification in the process.

[0004] COMBINATION Figure 1As mentioned above, the current propeller shaft system balance calibration is through the weight to apply static tension on the end of the propeller shaft, but in fact, the propeller applies a rotating state thrust during testing, that is, the stress of the shaft system is pressure rather than tension, which is opposite to the stress during calibration. Such calibration method has certain defects: first, the positive and negative loading slope of the sensor often has certain error, second, the initial friction in static state is generally greater than that in rotating state, especially these devices are usually equipped with seals for underwater testing, the stress of the seal in static and rotating state is different under the action of force in positive and negative directions, which makes the device error during calibration within the accuracy range, while the error during actual testing is unknown, and the error risk is uncontrollable; third, the calibration is without propeller, while the testing is with propeller, if the mass of the propeller is large, the gravity may affect the testing accuracy. For example, the patent document with publication number "CN115560907 A" discloses a calibration device for a thrust balance, which adopts the above-mentioned tension method for calibration; and the prior art related to shaft balance calibration is not searched, only patents related to calibration are searched, such as: utility model patent with publication number "CN117686137A"---horizontal force balance calibration device and method and utility model patent with publication number "CN112326113A"---force balance calibration system and method, but the technical content disclosed in the prior art and the related technical problems realized by the present application have little relationship.

[0005] Therefore, how to provide a propeller shaft system balance thrust calibration device to solve the above-mentioned disadvantages has become a technical problem urgently needed to be solved by those skilled in the art. SUMMARY

[0006] To achieve the above-mentioned purpose, the utility model provides a propeller shaft system balance thrust calibration device. The specific technical scheme is as follows:

[0007] A propeller shaft system balance thrust calibration device is used in cooperation with a shaft system including a sensor, the sensor is electrically connected to a collection system, one end of the shaft system is a contact end, the shaft system is placed horizontally during calibration, the calibration device includes a thrust applying part, the thrust applying part has a thrust applying end, the thrust applying end abuts to the contact end along the horizontal direction during calibration, and the thrust applying part can provide several known forces so that the contact end is acted on by the thrust applying end, and the sensor outputs a parameter value corresponding to each known force.

[0008] As a preferred, the thrust applying part includes:

[0009] A force arm lever having a force applying section for hanging different weights of a weight and a force receiving section, the force receiving section presents a horizontal section at a position away from the force applying section, a free end of the horizontal section forms the pushing force applying end, the force arm lever is provided with a leveling component for adjusting the force arm lever to be in a horizontal state when no weight is hung;

[0010] A liftable support body, an upper end of the liftable support body is a support end forming a fulcrum of the force arm lever so as to adjust the height of the force arm lever.

[0011] As a preferred embodiment, the force arm lever is an L-shaped, a long side of the L-shaped is arranged on the fulcrum, a section of the long side away from a short side of the L-shaped forms the force applying section, the remaining section of the long side and the short side form the force receiving section, an end of the short side is provided with a conical pushing force applying needle forming the horizontal section, a center line of the pushing force applying needle is perpendicular to the short side, a needle tip of the pushing force applying needle forms the pushing force applying end.

[0012] As a preferred embodiment, the leveling component includes: an upper surface of the long side of the L-shaped forming the force applying section and an outer surface of the short side of the L-shaped are both provided with a leveling sliding groove, a nut is slidingly arranged in the leveling sliding groove, a leveling bolt is arranged corresponding to the nut, one nut and the corresponding leveling bolt form a set of leveling bolts, the leveling bolts are screwed with the nuts so that the set of leveling bolts are in a fixed position in the leveling sliding groove.

[0013] As a preferred embodiment, a top end of the pushing force applying needle is embedded with a rotatable steel ball.

[0014] As a preferred embodiment, the liftable support body includes:

[0015] A sliding body having a length, one end of the sliding body along the length direction forms the support end, the other end forms an insertion end;

[0016] A containing base, an inner part of the containing base is provided with a sliding channel having a length and a shape matching the shape of the sliding body, the sliding channel is provided in an open manner, the insertion end is inserted into the sliding channel through the opening and can slide up and down along the sliding channel, an outer side wall of the containing base corresponding to the sliding channel is provided with two rows of fixing holes, each row of the fixing holes includes a plurality of first threaded holes arranged in a spaced manner in a vertical direction;

[0017] A fixing plate, a plurality of second threaded holes penetrating the fixing plate and corresponding to the positions of the two rows of fixing holes are arranged on the fixing plate, a pressing plate is arranged on a top part of the fixing plate for pressing the outer side wall of the sliding body so that the sliding body can be fixed in the sliding channel;

[0018] A plurality of bolts are threadedly connected with the corresponding second threaded holes and the first threaded holes so that the fixing plate is fixed on the containing base.

[0019] As preferred, the accommodating base comprises:

[0020] A base plate, in which a horizontal sliding slot is formed, and on the left and right sides of the horizontal sliding slot, adjusting screw holes are formed, which are communicated with the horizontal sliding slot;

[0021] An accommodating body with a length, in which the sliding slot is formed, and the bottom end of the accommodating body is located in the horizontal sliding slot and can reciprocate horizontally along the horizontal sliding slot;

[0022] Two adjusting bolts, one for each of the two adjusting screw holes, and the ends of the two adjusting bolts can be pressed against the left and right sides of the accommodating body to fix the accommodating body.

[0023] As preferred, the cross section of the sliding body is trapezoidal.

[0024] As preferred, the bottom of the base plate is formed into a magnetic base, and / or four corners of the base plate are provided with base screw holes through which a screw rod can pass.

[0025] As preferred, the support end of the sliding body is V-shaped, and a bearing is arranged at a position corresponding to the V-shaped structure on the force arm lever, which is formed as the rotation center of the force arm lever.

[0026] As preferred, three horizontal bubbles are installed on the force arm lever, one horizontal bubble is installed directly above the rotation center of the force arm lever on the long side of the L-shaped structure, and the remaining two horizontal bubbles are installed on the front and back of the force applying section of the force arm lever.

[0027] As preferred, a balance pointer is further included, which is installed on the force arm lever at a position corresponding to the rotation center thereof, and the pointer of the balance pointer points to the sliding body below the force arm lever, and on the surface of the sliding body corresponding to the pointer, a scale of ±10° is arranged.

[0028] As preferred, two hanging points are arranged on the force applying section of the force arm lever for hanging weights, and the distance from one hanging point to the rotation center is equal to the distance from the steel ball in the top end of the force applying needle to the rotation center, and the distance from the other hanging point to the rotation center is 1.5 times the distance from the steel ball in the top end of the force applying needle to the rotation center.

[0029] The propeller model shafting balance thrust calibration device has the following technical effects:

[0030] The thrust can be provided for the shafting without affecting the installation of the propeller model, and the calibration can be performed when the shafting is static or slowly rotating. The calibration is most stable, accurate and highly repeatable. The force in the same direction as the thrust direction of the propeller model is provided at the front end of the shafting, so that the technical problem of "the slope of the forward and reverse loading often has certain error" in the prior art is solved. The size of the force can be adjusted, and in a preferred embodiment, the size of the force is adjusted by increasing or decreasing the weight.

[0031] The force arm lever is designed separately from the liftable support body. When the calibration range is wider, a larger multiple of thrust can be provided by replacing the force arm lever. The height of the force arm lever can be adjusted within a certain range to adapt to shaftings of different heights for calibration.

[0032] The leveling mode of the leveling bolt set is simple in structure and easy to realize and quickly adjust.

[0033] The top end of the force applying thimble is embedded with a rotatable steel ball. When the shafting is slowly rotating, the force arm lever can also stably apply thrust to the shafting. The calibration device can calibrate the shafting when rotating under the condition of providing thrust, solving the defect of "uncontrollable error risk" in the prior art.

[0034] The two adjusting bolts are used in cooperation to realize the fine adjustment of the positions of the force arm lever and the shafting, especially after the base plate is fixed, the fine adjustment of the positions can still be realized, and the stable contact of the force arm lever and the shafting is ensured.

[0035] Three groups of horizontal bubbles are designed, so that the observation angle of the operator is larger, the coaxial error of the applied force and the shafting is smaller, the operation is more convenient, and the calibration is more accurate.

[0036] The balance pointer is provided. When the shafting and the base plate have a certain slope (propeller pod test, common), the shafting thrust calibration can still be performed within the range of plus or minus 10 degrees.

[0037] Two weight suspension points are designed, and the calibration can be performed with equal force and 1.5 times force. The same weight is used, and the calibration range is larger. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The device for calibration in the prior art is shown in the figure, and the arrow direction is the direction of the provided tension;

[0039] Figure 2 The structure diagram of a specific embodiment of the provided propeller model shafting balance thrust calibration device is shown in the figure;

[0040] Figure 3 The structure diagram of a specific embodiment of the provided propeller model shafting balance thrust calibration device is shown in the figure; Figure 2 The schematic diagram of another perspective view of the provided propeller model shafting balance thrust calibration device is shown in the figure;

[0041] Figure 4 The structure diagram of a specific embodiment of the provided propeller model shafting balance thrust calibration device is shown in the figure;Figure 3 A diagram illustrating the breakdown;

[0042] Figure 5 A cross-sectional view of the provided propeller shaft system balance thrust calibration device;

[0043] Figure 6 A schematic diagram of the provided propeller shaft system balance thrust calibration device during calibration.

[0044] Figure 7 A bottom view of one specific embodiment of the provided propeller shaft system balance thrust calibration device;

[0045] Figure 8 This is a flowchart of a specific implementation method for the thrust calibration of a propeller shaft system balance.

[0046] Figures 1-8 The labels in the attached figures are as follows:

[0047] 1. Paddle mold, 2. Shaft system, 3. Contact end, 4. Lever arm, 5. Force application section, 6. Force receiving section, 7. Weight, 8. Force application pin, 9. Leveling groove, 10. Leveling bolt assembly, 11. Steel ball, 12. Sliding body, 13. Insertion end, 14. Slide, 15. Fixing plate, 16. Base plate, 17. Horizontal groove, 18. Receiving body, 19. Adjusting bolt, 20. Magnet, 21. Base threaded hole, 22. V-shaped structure, 23. Bearing, 24. Rotation center, 25. Level bubble, 26. Balance pointer, 27. Scale, 28. Suspension point. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of the propeller shaft system balance thrust calibration method and device proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will further illustrate these points. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0049] The utility model provides a kind of propeller model shafting balance thrust calibration device, it is used in cooperation with the shafting 2 comprising sensor, the sensor is electrically connected with a acquisition system, the one end of the shafting 1 is contact end 3, the shafting 2 is horizontally placed when calibration, the calibration device includes exerting thrust part, the exerting thrust part has a thrust end, the thrust end is abutted to the contact end 3 along horizontal direction when calibration and the exerting thrust part can provide several known forces so that the contact end 3 is acted by the thrust end, corresponding each known force, the sensor outputs a parameter value.

[0050] Of course, propeller model 1 is installed on the shafting 2 near the contact end 3 during calibration, the calibration of the shafting with propeller model can be realized.

[0051] Without affecting the installation of propeller model 1, the device can provide thrust for the shafting 2, and calibration can also be carried out when the shafting 2 is stationary or slowly rotating. The defect that the calibration is often carried out in the way of providing tension due to the environment in which the shafting 2 is installed in the prior art is avoided.

[0052] Combining with the drawings Figures 1-7 In a specific embodiment, the exerting thrust part includes:

[0053] Force arm lever 4 has force applying section 5 and force receiving section 6, the force applying section 5 is used to hang different weights of weight 7, the force receiving section 6 is a horizontal section at a position away from the force applying section 5, and the free end of the horizontal section forms the thrust end, and a leveling component is arranged on the force arm lever 4 to adjust the force arm lever 4 to be in a horizontal state when the weight 7 is not hung;

[0054] Liftable support body, the upper end of which is a support end forming the fulcrum of the force arm lever 4 so that the height of the force arm lever 4 can be adjusted.

[0055] The form of force arm lever 4 and weight 7 is used for calibration, because this form is the most stable, accurate and repeatable for calibration. In addition, the force arm lever 4 and the liftable support body are designed as a split body, when the calibration range is wider, a larger multiple of thrust can be provided by replacing the force arm lever 4. The height of the force arm lever 4 can be adjusted within a certain range to adapt to the calibration of shafting 2 of different heights.

[0056] In a specific embodiment, as Figures 1-7As shown, the force arm lever 4 is L-shaped, the long side of the L-shaped is arranged on the fulcrum, the long side away from the short side forms the force applying section 5, the remaining section of the long side and the short side form the force receiving section 6, the end of the short side is provided with a conical force applying needle 8 to form the horizontal section, the center line of the force applying needle 8 is perpendicular to the short side, and the needle tip of the force applying needle 8 forms the thrust applying end; the leveling component comprises: the upper surface of the long side of the L-shaped forming the force applying section 5 and the outer surface of the short side of the L-shaped are both provided with a leveling sliding groove 9, a nut is slidingly arranged in the leveling sliding groove 9, and a leveling bolt is arranged corresponding to the nut, one nut and the corresponding leveling bolt form a leveling bolt set 10, and the leveling bolt set 10 is fixed in the leveling sliding groove 9 by screwing the nut and the bolt.

[0057] It can be understood that the leveling component is used in the manner of nut cooperating with bolt, specifically, the nut can slide in the leveling sliding groove 9, and opposite inward folding edges are formed on opposite upper edges of the leveling sliding groove 9, during the leveling process, the nut and the corresponding leveling bolt are moved, when the leveling effect is achieved, the leveling bolt is screwed to make the nut abut against the folding edge, so that the leveling bolt set 10 is fixed in the leveling sliding groove 9.

[0058] Further, as shown in the figure, Figures 1-7 the top end of the force applying needle 8 is embedded with a rotatable steel ball 11; when the shafting slowly rotates, the force arm lever 4 can also stably apply thrust to the shafting 2. The calibration device can calibrate the rotation of the shafting 2 under the condition of providing thrust, and solves the defect of “uncontrollable error risk” mentioned in the prior art.

[0059] In one specific embodiment, as shown in the figure, Figures 1-7 the liftable support body comprises:

[0060] a sliding body 12 having a length, one end of the sliding body 12 along the length direction forms the support end, and the other end forms an insertion end 13;

[0061] a containing base, an internal slide 14 having a length and matching the shape of the sliding body 12 is arranged in the containing base, the slide 14 is arranged in an open manner, the insertion end 13 is inserted into the slide 14 through the opening and can slide up and down along the slide 14, and two rows of fixing holes are arranged on the outer side wall of the containing base corresponding to the slide 14, each row of fixing holes comprises a plurality of first threaded holes arranged in a spaced manner in the vertical direction;

[0062] A fixed plate 15, a plurality of second threaded holes are formed on the fixed plate 15, the second threaded holes are corresponding to the positions of the two rows of fixed holes, and the top of the fixed plate 15 is provided with an extrusion plate for extruding the outer side wall of the sliding body 12 so that the sliding body 12 can be fixed in the slide 14;

[0063] A plurality of bolts are threadedly connected with the corresponding second threaded holes and the first threaded holes so that the fixed plate 15 is fixed on the accommodating base.

[0064] The cross section of the sliding body 12 is in the shape of a trapezoid.

[0065] The shape is limited so that stable support can be achieved, and precise positioning can be achieved without deviation by matching the shape.

[0066] In one specific embodiment, as shown in the drawings, the accommodating base comprises: Figures 1-7

[0067] A base plate 16, a horizontal sliding groove 17 is formed in the base plate 16, and adjusting threaded holes are formed on the left and right sides of the horizontal sliding groove 17 on the base plate 16, and the adjusting threaded holes are communicated with the horizontal sliding groove 17.

[0068] An accommodating body 18 with a length, the slide 14 is formed in the accommodating body 18, and the bottom end of the accommodating body 18 is located in the horizontal sliding groove 17 and can reciprocate along the horizontal sliding groove 17 in the horizontal direction.

[0069] Two adjusting bolts 19, one for each of the two adjusting threaded holes, the ends of the two adjusting bolts 19 can abut against the left and right sides of the accommodating body 18 to fix the accommodating body 18.

[0070] The two adjusting bolts 19 are used in cooperation to realize fine adjustment of the positions of the force arm lever 4 and the shafting 2, especially after the base plate 16 is fixed, the fine adjustment of the positions can still be realized to ensure stable contact of the force arm lever 4 and the shafting 2.

[0071] The bottom of the base plate 16 is formed as a magnetic base and / or four corners of the base plate 16 are provided with base threaded holes 21 through which a screw rod can pass. The magnetic base 16 can be realized by providing a plurality of magnets 20 on the bottom surface of the base plate 16. Generally, when calibrating, the calibration device is placed on the related equipment, and the magnetic base can conveniently fix the calibration device on the metal surface; similarly, the screw rod can also be used to pass through the base threaded holes 21 to fix at the required position.

[0072] ​In one embodiment, the support end on the sliding body 12 is in the form of a V-shaped structure 22, and a bearing 23 is arranged on the force arm lever 4 at a position corresponding to the V-shaped structure 22, which is formed as the rotation center 24 of the force arm lever 4. Stable support can be achieved, and accurate positioning can be achieved without deviation under the action of the V-shaped structure.

[0073] Three horizontal bubbles 25 are arranged on the force arm lever 4, one of which is arranged directly above the rotation center 24 of the force arm lever 4 on the long side of the L-shaped structure, and the other two are arranged on the front and rear sides of the force applying section 5 of the force arm lever 4. The three groups of horizontal bubbles 25 are designed to have a larger observation angle, a smaller coaxial error of the applied force and the shafting 2, and more convenient operation and more accurate calibration.

[0074] Further, as shown in Figures 1-7 , a balance pointer 26 is arranged on the force arm lever 4 at a position corresponding to the rotation center 24 thereof, and a pointer of the balance pointer 26 points to the sliding body 12 below the force arm lever 4. A scale 27 of ±10° is arranged on a surface of the sliding body 12 corresponding to the pointer. With the balance pointer 26, when the shafting 2 has a certain slope with the base plate 16 (paddle model pod test, common), the shafting thrust calibration can still be performed within the range of ±10°.

[0075] In one embodiment, two hanging points 28 are arranged on the force applying section 5 of the force arm lever 4 for hanging the weight 7. The distance from one of the hanging points 28 to the rotation center 24 is equal to the distance from the steel ball 11 in the top end of the force applying top pin 8 to the rotation center 24, and the distance from the other hanging point 28 to the rotation center 24 is 1.5 times the distance from the steel ball 11 in the top end of the force applying top pin 8 to the rotation center 24.

[0076] The design of the two weight hanging points 28 can calibrate the force and 1.5 times the force, and the same weight can be used to calibrate a larger range.

[0077] The utility model also provides a paddle model shafting balance thrust calibration method, adopts the paddle model shafting balance thrust calibration device to calibrate, combines Figure 8 , and comprises the following steps:

[0078] (1) Calibrate the environment, install the paddle model 1, connect the acquisition system and preheat;

[0079] (2) In the state of not hanging the weight, observe the horizontal bubble 25 or the balance pointer 26, and judge whether the force arm lever 4 is horizontal. If yes, the next step is performed, and if not, the number or position of the leveling bolt set 10 is adjusted to make the force arm lever 4 and the shafting 2 approximately horizontal, and the top end of the force applying top pin 8 is slightly lifted;

[0080] (3) Fix the leveling bolt group 10, and the force applying pin 8 is slightly pressed, the force arm lever 4 is sensitively swung, and finally can stop at the position of the initial state before being slightly pressed;

[0081] (4) The calibration device is installed at the position of the contact end 3 of the shafting 2 by using the magnetic attraction or screw rod fixing method;

[0082] (5) Adjust the two adjusting bolts 19, so that the force applying pin 8 is pressed against the shafting 2 in a parallel state;

[0083] (6) Start the driving motor connected to the shafting 2 to make the shafting 2 rotate slowly at low speed;

[0084] (7) Use the current sensor sensitivity to record the value of the sensor on the acquisition system at this time, and set it to zero as the test zero point;

[0085] (8) Gradually increase the weight 7 as different known forces, record the parameter value of the sensor each time, compare and analyze the weight of the hanging weight, calculate whether the error is within the required range, if yes, proceed to the next step, if not, according to the test results, revise the sensor sensitivity, and input it into the acquisition system, and return to step (7);

[0086] (9) According to the record, write a calibration report.

[0087] In the calibration, the top end of the force applying pin is slightly lifted in step (2), so that the force applying pin at this position is not in contact with the shafting, and the two can be in a parallel state in a more accurate way, so as to ensure that the thrust is accurately applied to the shafting.

[0088] In step (6), the shafting is rotated slowly at low speed, which can ensure the stability of the contact between the force applying pin and the shafting, and thus the calibration can be more accurate. If the speed is too fast, the two cannot be in better contact due to possible vibration.

[0089] In one specific embodiment, during calibration, equal force is used for calibration, that is, the distance from the suspension point 28 to the center of rotation 24 is equal to the distance from the steel ball 11 in the top end of the force applying pin 8 to the center of rotation 24. According to different weights, the different parameter values of the sensor are recorded, and the specific records are shown in the following table, and the existing method is also used for similar experiments, and the specific results are as follows: Figure 1

[0090]

[0091]

[0092] ​

[0093] The values of the method of the present application can be compared with the original correlation values of the sensor when it is shipped, to calculate whether the error is within the required range. At the same time, the comparison result further illustrates the defect that the positive and negative loading slopes of the sensor often have certain errors mentioned in the background section, and the calibration method of providing the thrust provided by the present application can solve the defect.

[0094] The method has the same technical effects as mentioned above.

[0095] Further, the calibration device and the calibration method can also be used for the statistics of the original values of the sensor when it is shipped.

[0096] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A propeller model shafting balance thrust calibration device, characterized in that, The application relates to a calibration device for a shaft system comprising a sensor electrically connected to a collection system, one end of the shaft system being a contact end, the shaft system being horizontally placed during calibration, the calibration device comprising a thrust applying part, the thrust applying part having a thrust applying end, the thrust applying end abutting to the contact end in a horizontal direction during calibration, and the thrust applying part being capable of providing a plurality of known forces so that the contact end is acted on by the thrust applying end, and the sensor outputting a parameter value corresponding to each known force.

2. The rig shafting thrust calibration device of claim 1, wherein, The thrust applying part comprises: a force arm lever having a force applying section and a force receiving section, the force applying section being used for hanging different weights, the force receiving section being a horizontal section at a position away from the force applying section, a free end of the horizontal section forming the thrust applying end, and a leveling component being arranged on the force arm lever and used for adjusting the force arm lever to be in a horizontal state when no weight is hung; a liftable support body, an upper end of the support body being a support end and forming a fulcrum of the force arm lever so that the height of the force arm lever can be adjusted.

3. The rig shafting thrust calibration device of claim 2, wherein, The force arm lever is L-shaped, a long side of the L-shaped force arm lever is arranged on the fulcrum, a section of the long side away from a short side of the L-shaped force arm lever forms the force applying section, the remaining section of the long side and the short side form the force receiving section, an end of the short side is provided with a conical thrust applying needle forming the horizontal section, a center line of the thrust applying needle is perpendicular to the short side, and a needle tip of the thrust applying needle forms the thrust applying end.

4. The rigging thrust calibration device of claim 3, wherein, The leveling component comprises: an upper surface of the long side of the L-shaped force arm lever and an outer surface of the short side of the L-shaped force arm lever are both provided with a leveling sliding groove, nuts are slidably arranged in the leveling sliding grooves, a leveling bolt is arranged corresponding to each nut, one nut and the corresponding leveling bolt form a set of leveling bolts, and the leveling bolts are screwed with the nuts so that the set of leveling bolts are in fixed positions in the leveling sliding grooves.

5. The rigging thrust calibration device of claim 4, wherein, A steel ball capable of rotating is embedded in the top end of the thrust applying needle.

6. The rig shafting thrust calibration device of claim 5, wherein, The liftable support body comprises: a sliding body having a length, one end of the sliding body along the length direction forming the support end and the other end forming an insertion end; a containing base, an internal slide channel of the containing base having a length and matching the shape of the sliding body, the slide channel being open, the insertion end being inserted into the slide channel through the opening and being capable of sliding up and down along the slide channel, two rows of fixing holes being arranged on the outer side wall of the containing base corresponding to the slide channel, and each row of fixing holes comprising a plurality of first threaded holes arranged in a vertical direction and spaced apart; a fixed plate, a plurality of second threaded holes being arranged on the fixed plate and penetrating the fixed plate and corresponding to the positions of the two rows of fixing holes, a pressing plate being arranged on the top of the fixed plate and used for pressing the outer side wall of the sliding body so that the sliding body can be fixed in the slide channel; a plurality of bolts, the bolts being threadedly connected with the corresponding second threaded holes and the first threaded holes so that the fixed plate is fixed on the containing base.

7. The rig shafting thrust calibration device of claim 6, wherein, The containing base comprises: a base plate, a horizontal sliding groove being arranged in the base plate, and an adjusting threaded hole being arranged on the base plate and located on the left and right sides of the horizontal sliding groove, the adjusting threaded hole being communicated with the horizontal sliding groove. The accommodating body has a length, and the slide is formed in the accommodating body. The bottom end of the accommodating body is located in the horizontal sliding groove and can reciprocate along the horizontal sliding groove in a horizontal direction. Two adjusting bolts correspond to the two adjusting threaded holes respectively. The ends of the two adjusting bolts can abut against the left and right sides of the accommodating body to fix the accommodating body.

8. The rig shafting thrust calibration device of claim 7, wherein, The cross section of the sliding body is trapezoidal.

9. The rig shafting thrust calibration device of claim 7, wherein, The bottom of the base plate is formed as a magnetic base, and / or four base threaded holes are formed in the four corners of the base plate to allow a screw rod to pass through.

10. The rig shafting thrust calibration device of claim 7, wherein, The support end of the sliding body is V-shaped. A bearing is arranged at a position corresponding to the V-shaped structure on the force arm lever, and the position is formed as the rotation center of the force arm lever.

11. The rigging thrust calibration device of claim 10, wherein, Three horizontal bubbles are arranged on the force arm lever. One horizontal bubble is arranged above the rotation center of the corresponding force arm lever on the long side of the L-shaped structure. The remaining two horizontal bubbles are arranged on the front and back of the force applying section of the force arm lever.

12. The rigging thrust calibration device of claim 11, wherein, A balance pointer is arranged on the force arm lever at a position corresponding to the rotation center. The pointer of the balance pointer points to the sliding body below the force arm lever. A surface of the sliding body corresponding to the pointer is provided with a scale of ±10°.

13. The rigging thrust calibration device of claim 11, wherein, Two hanging points are arranged on the force applying section of the force arm lever to hang the weight. The distance from one hanging point to the rotation center is equal to the distance from the steel ball in the top end of the force applying needle to the rotation center. The distance from the other hanging point to the rotation center is 1.5 times the distance from the steel ball in the top end of the force applying needle to the rotation center.

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