Radial force calibration device

Abstract

The utility model relates to a calibration device, in particular to a radial force calibration device, which comprises a first upright post and a second upright post, a cross beam is connected between the tops of the first upright post and the second upright post, a mounting plate is connected between the bottoms of the first upright post and the second upright post, and a radial force sensor is mounted on one surface of the mounting plate; the oil cylinder mechanism comprises a hydraulic oil cylinder, a piston seat, a piston head and a hydraulic oil pipe, the piston seat is fixed on the cross beam, the piston head is movably arranged in the piston seat and faces the radial force sensor, and the hydraulic oil pipe is connected between the hydraulic oil cylinder and the piston seat; the tension testing mechanism comprises a tension sensor and a belt, the top of the tension sensor is connected with the piston head, the bottom of the tension sensor is connected with the top end of the belt, and the radial force sensor is sleeved with the bottom end of the belt; by the aid of the structure, different calibration forces can be efficiently and flexibly switched through intervention of the oil cylinder mechanism.

Description

Technical Field

[0001] The utility model relates to a calibration device, in particular to a radial force calibration device. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] Radial force testing is widely used in the testing process of various gear trains. To ensure the accuracy of the test, radial force sensors need to be calibrated frequently. However, due to the different pulley sizes of each gear train, the existing calibration of radial force sensors often relies on hanging weights. During the calibration process using hanging weights, the weight of the weights needs to be adjusted frequently. In some cases, when the calibration equipment is relatively large, the operator needs to exert more physical labor, which also leads to inefficient calibration process. In addition, moving heavy weights also poses a safety hazard to the operator.

[0004] At the same time, the method of calibration by weights also has a problem of loading limit - due to the volume and weight of the weights, it is generally difficult to exceed 150Kg, which makes the calibration range relatively limited.

[0005] Currently, there is no radial force calibration device that can solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a radial force calibration device which can efficiently and flexibly switch between different calibration forces through the intervention of an oil cylinder mechanism.

[0007] In order to achieve the above-mentioned purpose, the present invention discloses the following radial force calibration device; the radial force calibration device comprises:

[0008] A first column and a second column, a crossbeam connected between the top of the first column and the top of the second column, and a mounting plate connected between the top of the first column and the bottom of the second column;

[0009] a radial force sensor, the radial force sensor being fixed on one side of the mounting plate;

[0010] An oil cylinder mechanism, comprising a hydraulic cylinder, a piston seat, a piston head, and a hydraulic oil pipe, wherein the piston seat is fixed to the crossbeam, the piston head is movably disposed in the piston seat, and the piston head is disposed toward the direction of the radial force sensor, and the hydraulic oil pipe is connected between the hydraulic cylinder and the piston seat;

[0011] A tension testing mechanism, comprising a tension sensor and a belt, wherein the top of the tension sensor is connected to the piston head, the bottom of the tension sensor is connected to the top of the belt, and the bottom end of the belt is sleeved on the radial force sensor;

[0012] In which, the belt has a sufficient length so that when the hydraulic cylinder drives the piston head back into the piston seat, the belt applies an upward pulling force to the radial force sensor; when the hydraulic cylinder drives the piston head to extend out of the piston seat, the upward pulling force applied by the belt to the radial force sensor is weakened or disappears.

[0013] Furthermore, the side wall of the first column is provided with a first groove, and the side wall of the second column is provided with a second groove, the first groove and the second groove are arranged opposite to each other, and the two sides of the mounting plate are respectively embedded and fixed in the first groove and the second groove, so that the mounting plate is fixed between the first column and the second column.

[0014] Furthermore, the mounting plate is configured as a planar rectangular plate, and the radial force sensor is configured at the geometric center of one side of the mounting plate.

[0015] Furthermore, a through hole is provided on the mounting plate, and a pin matching the through hole is provided on one side of the radial force sensor, and the pin is passed through the through hole so that the radial force sensor is fixed on the mounting plate.

[0016] Furthermore, a fixing seat is connected between the top of the first column and the bottom of the second column, the bottom of the mounting plate is fixed on the fixing seat, and the size of the fixing seat matches the bottom of the mounting plate.

[0017] Furthermore, the oil cylinder mechanism also includes a pressure rod, one end of which is rotatably connected to the hydraulic oil cylinder. When the pressure rod is rotated and pressed downward, the hydraulic oil cylinder supplies oil to the hydraulic oil pipe.

[0018] Furthermore, the radial force calibration device also includes a digital display amplifier, which is connected to the radial force sensor and the tension sensor signals, and is used to read the values ​​of the radial force sensor and the tension sensor in real time.

[0019] Furthermore, a first trapezoidal stabilizing seat is fixed to the bottom of the first column, and the long side of the first trapezoidal stabilizing seat is arranged toward the bottom and abuts against the mounting surface of the radial force calibration device; a second trapezoidal stabilizing seat is fixed to the bottom of the second column, and the long side of the second trapezoidal stabilizing seat is arranged toward the bottom and abuts against the mounting surface of the radial force calibration device; wherein, the first trapezoidal stabilizing seat and the second trapezoidal stabilizing seat are arranged in a mirror image.

[0020] Furthermore, the tension testing mechanism further includes a buckle, which is arranged between the tension sensor and the belt, the tension sensor is fixedly connected to the buckle, and the belt is wound around the buckle.

[0021] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0022] The radial force calibration device of the utility model can replace the existing weights for force application and balance control of the radial force sensor through the combination of the cylinder mechanism and the tension test mechanism, thereby significantly improving the calibration efficiency. When different force values ​​need to be adjusted, there is no need to perform inefficient manual operations such as replacing weights. It is only necessary to adjust the tension of the cylinder mechanism, which is convenient and fast. In addition, the test range of the cylinder mechanism is larger, and it has a wider range of applicability than weight calibration.

[0023] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a three-dimensional schematic diagram of a radial force calibration device provided in an embodiment of this specification;

[0026] In the figure: 1. First column; 11. First groove; 12. First trapezoidal stabilizing seat; 2. Second column; 21. Second groove; 22. Second trapezoidal stabilizing seat; 3. Radial force sensor; 4. Cylinder mechanism; 41. Hydraulic cylinder; 42. Piston seat; 43. Piston head; 44. Hydraulic oil pipe; 45. Pressure rod; 5. Tension testing mechanism; 51. Tension sensor; 52. Belt; 53. Buckle; 6. Crossbeam; 7. Mounting plate; 8. Fixing seat. DETAILED DESCRIPTION

[0027] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0028] The following is an explanation of the implementation of the present invention through specific specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0029] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0030] See Figure 1 , is a radial force calibration device of this embodiment; wherein the radial force calibration device includes:

[0031] A first column 1 and a second column 2, a crossbeam 6 is connected between the top of the first column 1 and the top of the second column 2, and a mounting plate 7 is connected between the top of the first column 1 and the bottom of the second column 2;

[0032] A radial force sensor 3 is fixed on one side of the mounting plate 7;

[0033] The cylinder mechanism 4 includes a hydraulic cylinder 41, a piston seat 42, a piston head 43, and a hydraulic oil pipe 44. The piston seat 42 is fixed to the crossbeam 6. The piston head 43 is movably arranged in the piston seat 42 and is arranged in the direction of the radial force sensor 3. The hydraulic oil pipe 44 is connected between the hydraulic cylinder 41 and the piston seat 42.

[0034] Tension testing mechanism 5, which includes a tension sensor 51 and a belt 52. The top of the tension sensor 51 is connected to the piston head 43, and the bottom of the tension sensor 51 is connected to the top of the belt 52. The bottom end of the belt 52 is sleeved on the radial force sensor 3;

[0035] Among them, the belt 52 has a sufficient length so that when the hydraulic cylinder 41 drives the piston head 43 back into the piston seat 42, the belt 52 applies an upward pulling force to the radial force sensor 3. When the hydraulic cylinder 41 drives the piston head 43 to extend out of the piston seat 42, the upward pulling force applied by the belt 52 to the radial force sensor 3 is weakened or disappears.

[0036] For the above structure, during installation, the operator first needs to separate the first column 1 and the second column 2 by a preset distance so that the crossbeam 6 and the mounting plate 7 can be installed exactly between the first column 1 and the second column 2, and then, pass the piston head 43 in the cylinder mechanism 4 through the crossbeam 6 so that the piston seat 42 is installed on the crossbeam 6, and then connect the piston head 43 and the radial force sensor 3 through the tension sensor 51 and the belt 52 of the tension testing mechanism 5, so that the piston head 43 and the radial force sensor 3 can interact with each other with the help of the belt 52, and the tension sensor 51 can read the force changes in time.

[0037] Through the above structure, when in use, the operator only needs to start the hydraulic cylinder 41 of the cylinder mechanism 4, so that the hydraulic cylinder 41 recovers the oil in the piston seat 42 through the hydraulic oil pipe 44, and makes the piston head 43 perform a return stroke from bottom to top. Therefore, the tension sensor 51 fixedly connected to one end of the piston head 43 drives the belt 52 to pull upward. Since the belt 52 is mounted on the radial force sensor 3, the radial force sensor 3 can be directly subjected to force.

[0038] During the above-described operation, when radial force sensor 3 is subjected to force, tension sensor 51 is also subjected to force simultaneously. At this point, the operator can obtain two readings from radial force sensor 3 and tension sensor 51, respectively, as calibration data. After recording these data, the operator readjusts hydraulic cylinder 41 in cylinder mechanism 4, causing the retraction force of piston head 43 to change. This changes the readings from radial force sensor 3 and tension sensor 51, and the operator obtains new calibration data. Similarly, after adjusting hydraulic cylinder 41 and obtaining multiple rounds of calibration data, the radial force sensor 3 is calibrated.

[0039] During the entire above process, the operator only needs to adjust the retraction force of the piston head 43 of the cylinder mechanism 4 to achieve rapid switching of different calibration forces. Compared with the existing weight calibration that requires constant replacement of weights, the calibration efficiency is significantly improved and it is safer.

[0040] Furthermore, a first groove 11 is provided on the sidewall of the first column 1, and a second groove 21 is provided on the sidewall of the second column 2. The first groove 11 and the second groove 21 are arranged opposite each other. The mounting plate 7 is embedded and fixed in the first groove 11 and the second groove 21 on either side, respectively, to secure the mounting plate 7 between the first column 1 and the second column 2. Specifically, the mounting plate 7 is configured as a flat rectangular plate, and the radial force sensor 3 is positioned at the geometric center of one side of the mounting plate 7. This structure allows the first groove 11 and the second groove 21 to be flat and have a gap that matches the thickness of the mounting plate 7, facilitating the insertion and installation of the mounting plate 7. Besides securing with fasteners, it also provides friction and enhances the stability of the mounting plate 7 when the belt 52 pulls the radial force sensor 3 on the mounting plate 7. Furthermore, positioning the radial force sensor 3 at the geometric center of the mounting plate 7 also helps improve balance during the lifting process, thereby enhancing the accuracy of the reading.

[0041] Furthermore, a through hole is provided on the mounting plate 7, and a latch matching the through hole is provided on one side of the radial force sensor 3 (the through hole and the latch are not shown in the figure, but are actually Figure 1 The radial force sensor 3 is positioned behind the radial force sensor 3, and the pin is inserted into the through hole to fix the radial force sensor 3 on the mounting plate 7. It is worth noting that at the same time, the radial force sensor 3 is away from the mounting plate 7. Figure 1 The other side is attached to the mounting plate 7, so that the radial force sensor 3 can be effectively fixed while being easy to maintain and disassemble.

[0042] Furthermore, a fixing base 8 is connected between the top of the first column 1 and the bottom of the second column 2. The bottom of the mounting plate 7 is fixed to the fixing base 8. The size of the fixing base 8 matches the bottom of the mounting plate 7. Specifically, the fixing base 8 serves as a reinforcing rib between the first column 1 and the second column 2. Its purpose is to increase the fixing strength of the mounting plate 7 and prevent the mounting plate 7 from being dragged and displaced during testing.

[0043] Furthermore, the oil cylinder mechanism 4 includes a pressure rod 45, one end of which is rotatably connected to the hydraulic cylinder 41. When the pressure rod 45 is rotated and pressed downward, the hydraulic cylinder 41 supplies oil to the hydraulic oil pipe. Specifically, the pressure rod 45 serves as a handle for the operator to grasp and control the flow of oil in the hydraulic cylinder 41. The device that controls the flow of oil by the pressure rod 45 is not limited to an electrically controlled valve.

[0044] Furthermore, the radial force calibration device also includes a digital amplifier (not shown), which is connected to the radial force sensor 3 and the tension sensor 51. The digital amplifier is used to read the values ​​of the radial force sensor 3 and the tension sensor 51 in real time. Specifically, the digital amplifier allows operators to easily process the data immediately. The digital amplifier can be fixed to the first column 1 or the second column 2, avoiding the need for the cylinder mechanism 4 and the tension test mechanism 5.

[0045] Furthermore, a first trapezoidal stabilizing seat 12 is fixed to the bottom of the first column 1, with its long side facing the bottom and abutting the mounting surface of the radial force calibration device. A second trapezoidal stabilizing seat 22 is also fixed to the bottom of the second column 2, with its long side facing the bottom and abutting the mounting surface of the radial force calibration device. The first trapezoidal stabilizing seat 12 and the second trapezoidal stabilizing seat 22 are mirror images. The provision of the first trapezoidal stabilizing seat 12 and the second trapezoidal stabilizing seat 22 significantly improves the standing stability of the first column 1 and the second column 2, especially when the cylinder mechanism 4 pulls the belt 52 with high strength, thereby preventing the radial force calibration device from shaking.

[0046] Furthermore, the tension testing mechanism 5 includes a buckle 53, which is disposed between the tension sensor 5 and the belt 52. The tension sensor 5 is fixedly connected to the buckle 53, and the belt 52 is wound around the buckle 53. Specifically, the buckle 53 is configured as a square tubular structure, and the belt 52 fits against the inner wall of the tubular structure. The provision of the buckle 53 provides a certain amount of redundant space for the belt 52 to expand and contract, and facilitates rapid replacement of the belt 52.

[0047] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the description and drawings of the present invention are included in the scope of the patent application of the present invention.

[0048] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0049] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A radial force calibration device; characterized in that, The radial force calibration device comprises: A first column and a second column, a crossbeam connected between the top of the first column and the top of the second column, and a mounting plate connected between the top of the first column and the bottom of the second column; a radial force sensor, the radial force sensor being fixed on one side of the mounting plate; An oil cylinder mechanism, comprising a hydraulic cylinder, a piston seat, a piston head, and a hydraulic oil pipe, wherein the piston seat is fixed to the crossbeam, the piston head is movably disposed in the piston seat, and the piston head is disposed toward the direction of the radial force sensor, and the hydraulic oil pipe is connected between the hydraulic cylinder and the piston seat; A tension testing mechanism, comprising a tension sensor and a belt, wherein the top of the tension sensor is connected to the piston head, the bottom of the tension sensor is connected to the top of the belt, and the bottom end of the belt is sleeved on the radial force sensor; In which, the belt has a sufficient length so that when the hydraulic cylinder drives the piston head back into the piston seat, the belt applies an upward pulling force to the radial force sensor; when the hydraulic cylinder drives the piston head to extend out of the piston seat, the upward pulling force applied by the belt to the radial force sensor is weakened or disappears.

2. The radial force calibration device according to claim 1, characterized in that: The side wall of the first column is provided with a first groove, and the side wall of the second column is provided with a second groove. The first groove and the second groove are arranged opposite to each other, and the two sides of the mounting plate are respectively embedded and fixed in the first groove and the second groove, so that the mounting plate is fixed between the first column and the second column.

3. The radial force calibration device according to claim 1, characterized in that: The mounting plate is configured to be a planar rectangular plate, and the radial force sensor is configured to be located at the geometric center of one side of the mounting plate.

4. The radial force calibration device according to claim 1, characterized in that: A through hole is provided on the mounting plate, and a latch matching the through hole is provided on one side of the radial force sensor. The latch is passed through the through hole so that the radial force sensor is fixed on the mounting plate.

5. The radial force calibration device according to claim 1, characterized in that: A fixing seat is connected between the top of the first column and the bottom of the second column. The bottom of the mounting plate is fixed on the fixing seat. The size of the fixing seat matches the bottom of the mounting plate.

6. The radial force calibration device according to claim 1, characterized in that: The oil cylinder mechanism further comprises a pressure rod, one end of which is rotatably connected to the hydraulic oil cylinder. When the pressure rod is rotated and pressed downward, the hydraulic oil cylinder supplies oil to the hydraulic oil pipe.

7. The radial force calibration device according to claim 1, characterized in that: The radial force calibration device further includes a digital display amplifier, which is connected to the radial force sensor and the tension sensor signals and is used to read the values ​​of the radial force sensor and the tension sensor in real time.

8. The radial force calibration device according to claim 1, characterized in that: A first trapezoidal stabilizing seat is also fixed to the bottom of the first column, and the long side of the first trapezoidal stabilizing seat is arranged toward the bottom and abuts against the mounting surface of the radial force calibration device; a second trapezoidal stabilizing seat is also fixed to the bottom of the second column, and the long side of the second trapezoidal stabilizing seat is arranged toward the bottom and abuts against the mounting surface of the radial force calibration device; wherein, the first trapezoidal stabilizing seat and the second trapezoidal stabilizing seat are arranged in mirror images.

9. The radial force calibration device according to claim 1, characterized in that: The tension testing mechanism further includes a buckle, which is arranged between the tension sensor and the belt. The tension sensor is fixedly connected to the buckle, and the belt is wound around the buckle.

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