A spring-type mechanical tension gauge

Abstract

This utility model discloses a spring-type mechanical force gauge, comprising a cylindrical body, a guide post, and a linear bearing. The upper end of the cylindrical body is provided with an upper cap, and the lower end with a lower cap. The guide post is mounted inside the cylindrical body via the linear bearing, with its upper end passing through the upper cap and extending to the outside of the cylindrical body. An upper lifting ring is provided at the upper end of the guide post, and a lower lifting ring is provided on the lower cap, penetrating the lower cap. The lower lifting ring is connected to the guide post located inside the cylindrical body. A compression spring is provided inside the cylindrical body, and the compression spring is sleeved on the guide post. Using the mechanical force gauge described in this utility model, one end of the cylindrical body is connected to the rotating safety hook of the wing mooring cable, and the other end is connected to the ground ring, thus securing an aircraft parked on the ground and meeting usage requirements. Its overall structure is simple, operation and use are convenient, greatly improving work efficiency. It is highly practical and suitable for widespread application.

Description

Technical Field

[0001] This utility model relates to the field of aircraft maintenance technology, specifically a spring-type mechanical force gauge. Background Technology

[0002] A force gauge is a commonly used instrument for testing thrust and tension. The principle of a spring force gauge is that the elongation of a spring is directly proportional to the magnitude of the force applied. Within the elastic limit, the greater the tension on the spring, the greater its elongation; the elongation is directly proportional to the tension. When an aircraft is parked on the ground, a mechanical force gauge is used in conjunction with the wing mooring cables to restrain the left and right outer wings. The force gauge must have a limiting load of no less than 10.7 kN, and the maximum preload of the force gauge must not exceed 100 kgf to prevent damage to the wing fastening nuts when tightening the mooring cables, thus ensuring aircraft safety.

[0003] Existing force gauges suffer from jamming during use and cannot meet the demands of complex working environments. To satisfy the needs of force gauge usage, reduce friction, improve motion efficiency, and reduce reading errors to increase accuracy, it is necessary to improve existing force gauges and provide an easy-to-operate mechanical force gauge. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art, and thus provide a tension gauge with a simple structure and convenient operation. Using this tension gauge, one end is connected to the rotating safety hook of the wing parking mooring cable, and the other end is connected to the ground ring, thereby realizing the fixation of the aircraft parked on the ground. Specifically, it is a spring-type mechanical tension gauge.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a spring-type mechanical force gauge, including a cylindrical body, a guide post and a linear bearing. The upper end of the cylindrical body is provided with an upper cover, and the lower end is provided with a lower cover. The guide post is set in the cylindrical body through the linear bearing, and its upper end passes through the upper cover and extends to the outside of the cylindrical body. An upper lifting ring is provided at the upper end of the guide post, and a lower lifting ring is provided on the lower cover, which passes through the lower cover. The lower lifting ring is connected to the guide post located in the cylindrical body, and a compression spring is provided in the cylindrical body, which is sleeved on the guide post.

[0006] Furthermore, in the spring-type mechanical force gauge described in this utility model, the upper and lower plugs are respectively connected to the cylindrical body by threads.

[0007] Furthermore, in the spring-type mechanical force gauge described in this utility model, the linear bearing is installed inside the upper cover, and the guide post is slidably connected to the upper cover through the linear bearing.

[0008] Furthermore, in the spring-type mechanical force gauge described in this utility model, a cylindrical cover is also provided on the upper plug. The cylindrical cover is fitted outside the guide post. Several scale lines are vertically and evenly distributed on the cylindrical cover, and a 0 reference line is also engraved on the cylindrical cover. The 0 reference line is flush with the surface of the upper plug.

[0009] Furthermore, the spring-type mechanical force gauge described in this utility model has four scale lines, and the values ​​of the four scale lines from bottom to top are 25kg, 50kg, 75kg and 100kg respectively.

[0010] Furthermore, the spring-type mechanical tension gauge described in this utility model has a warning mark laser-printed on the middle of the outer side of the cylindrical body, the warning mark indicating that the pre-tension should not exceed 100 kg.

[0011] Furthermore, in the spring-type mechanical force gauge described in this utility model, the compression spring is made of 50CrVA material and its ultimate load is 1878KN; and the upper end of the compression spring, which is sleeved on the guide post, is in contact with the bottom of the linear bearing, while its lower end is in contact with the lower end cap.

[0012] Furthermore, in the spring-type mechanical force gauge described in this utility model, the cylindrical body, guide column, linear bearing, upper end cap, lower end cap, upper lifting ring, and lower lifting ring are all made of 05Cr17Ni4Cu4Nb stainless steel.

[0013] Compared with existing technologies, the spring-type mechanical force gauge described in this utility model has the following advantages: The linear bearing installed inside the upper cover reduces the friction of the guide column's linear motion, preventing jamming and improving motion efficiency. This reduces the force gauge's reading error and increases its accuracy. Furthermore, the cylindrical body, guide column, linear bearing, upper cover, lower cover, upper lifting ring, and lower lifting ring are all made of 05Cr17Ni4Cu4Nb stainless steel. This material has high strength, can withstand large loads, and has good high-temperature resistance and corrosion resistance, making it suitable for complex working environments. Therefore, the mechanical force gauge described in this utility model, using the lifting rings at both ends of the cylindrical body, connects one end to the rotating safety hook of the wing parking mooring cable and the other end to the ground ring, thus securing the aircraft parked on the ground and meeting usage requirements. Its overall structure is simple, easy to operate and use, greatly improving work efficiency. It is highly practical and suitable for widespread application. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model with warning labels; Figure 4 This is a three-dimensional structural diagram of the present invention with warning signs.

[0016] The figure shows: 1-upper cap, 2-lower cap, 3-cylinder body, 4-guide post, 5-compression spring, 6-linear bearing, 7-upper lifting ring, 8-lower lifting ring, 9-cylinder cover. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," and "right" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "provided with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] It should be noted that the term "comprising" or any other variation is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Example 1

[0021] like Figures 1 to 4 As shown, this embodiment provides a spring-type mechanical force gauge, including a cylindrical body 3, a guide post 4, and a linear bearing 6. The upper end of the cylindrical body 3 is provided with an upper cover 1, and the lower end is provided with a lower cover 2. The guide post 4 is disposed inside the cylindrical body 3 through the linear bearing 6, and its upper end passes through the upper cover 1 and extends to the outside of the cylindrical body 3. An upper lifting ring 7 is provided at the upper end of the guide post 4, and a lower lifting ring 8 is provided on the lower cover 2, which passes through the lower cover 2. The lower lifting ring 8 is connected to the guide post 4 located inside the cylindrical body 3, and a compression spring 5 is provided inside the cylindrical body 3, which is sleeved on the guide post 4.

[0022] Furthermore, using a spring-type mechanical force gauge provided in this embodiment, the upper cap 1 and the lower cap 2 are respectively connected to the cylindrical body 3 by means of threads.

[0023] Furthermore, in the spring-type mechanical force gauge provided in this embodiment, the linear bearing 6 is installed inside the upper cover 1, and the guide post 4 is slidably connected to the upper cover 1 through the linear bearing 6.

[0024] Furthermore, in the spring-type mechanical force gauge described in this utility model, a cylindrical cover 9 is also provided on the upper cover 1. The cylindrical cover 9 is fitted outside the guide post 4, and several vertically evenly distributed scale lines are provided on the cylindrical cover 9. A 0 reference line is also engraved on the cylindrical cover 9, and the 0 reference line is flush with the surface of the upper cover 1. In specific applications, there are four scale lines, and the values ​​of the four scale lines from bottom to top are 25kg, 50kg, 75kg, and 100kg, respectively. Meanwhile, for ease of marking and reading, the kg value of the scale line represents kilogram-force.

[0025] In the actual manufacturing process of the spring-type mechanical force gauge described in this utility model, the compression spring 5 is made of 50CrVA material, with a limit load of 1878N. The upper end of the compression spring 5, which is sleeved on the guide post 4, is in contact with the bottom of the linear bearing 6, while its lower end is in contact with the lower end cap 2. Meanwhile, in order to withstand larger loads and adapt to complex working environments, the cylindrical body 3, guide post 4, linear bearing 6, upper end cap 1, lower end cap 2, upper lifting ring 7, and lower lifting ring 8 are all made of 05Cr17Ni4Cu4Nb stainless steel. Example 2

[0026] This embodiment is based on Embodiment 1. To warn operators and prevent exceeding the maximum preload force during preload, a spring-type mechanical force gauge provided in this embodiment is used. A warning label is laser-printed on the outer surface of the cylindrical body 3, indicating that the preload force should not exceed 100 kg.

[0027] The spring-type mechanical tension gauge described in this utility model has a cylindrical cover 9 extending from the outer end of the upper cover 1, and scale lines are provided on the cylindrical cover 9. The scale line values ​​are 25kg, 50kg, 75kg and 100kg from bottom to top. A 0 reference line is engraved at the bottom of the cylindrical cover 9 in the upper cover 1, which is used to read the scale line at the outer end of the cylindrical cover 9.

[0028] Meanwhile, a linear bearing 6 is installed inside the upper cover 1. The guide post 4 can move inside the cylindrical body 3 through the linear bearing 6. The linear bearing 6 is mainly used to reduce the friction of the linear motion of the guide post 4, thereby improving the motion efficiency, reducing the reading error of the tension gauge, and thus increasing its accuracy.

[0029] Because the overall structure of the mechanical force gauge is cylindrical, the compression spring 5 and guide post 4 are located inside the cylindrical body 3. Upper cap 1 and lower cap 2 are installed at both ends of the cylindrical body 3 to limit the compression spring 5, guide post 4, and linear bearing 6. The working principle of the mechanical force gauge is mainly based on the degree of spring force, thereby displaying the force count. The spring is the main load-bearing component; therefore, the compression spring 5 is made of 50CrVA, with a maximum load capacity of 1878N. Simultaneously, to ensure the overall strength of the force gauge, the cylindrical body 3, guide post 4, linear bearing 6, upper cap 1, lower cap 2, upper lifting ring 7, and lower lifting ring 8 are all made of 05Cr17Ni4Cu4Nb stainless steel, and their surfaces are passivated. This material has high strength, can withstand large loads, has good high-temperature resistance and corrosion resistance, and can adapt to complex working environments. In the middle of the cylindrical body 3, a laser-printed mark reads "Do not exceed 100kg during pre-tensioning," serving as a warning to operators during use.

[0030] The working principle of the spring-type mechanical force gauge described in this utility model is as follows: The force reading is displayed based on the degree of force applied to the spring. During use, the upper and lower lifting rings 7 and 8 at both ends of the cylindrical body 3 are stretched. The lifting rings drive the guide post 4 to compress the spring. Under the action of the guide post 4, the spring pitch decreases, and the guide post 4 moves upward through the linear bearing 6. When the spring is under force, the difference between the baseline at the upper end of the guide post 4 and the scale line at the outer end of the upper cover 1 is formed, thus displaying the force gauge reading. The spring is a compression spring 5 installed inside the cylindrical body 3.

[0031] Before using the manufactured mechanical dynamometer, it needs to be installed and debugged. During use, connect the connecting parts (hooks or other objects) to the upper and lower lifting rings 7 and 8 at both ends of the cylindrical body 3 to complete the installation. The specific usage method is as follows: First, connect the lifting rings at both ends of the dynamometer to the mounting parts (hooks or other objects); then apply force to the mechanical dynamometer, until a difference is formed between the 0 baseline and the scale line; observe the difference between the 0 baseline and the scale line on the guide post of the mechanical dynamometer; record the dynamometer reading. During use, the pre-tightening should not exceed 100 kg.

[0032] Therefore, the spring-type mechanical force gauge described in this utility model, through the linear bearing 6 set inside the upper cover 1, can reduce the friction of the linear motion of the guide column 4, avoid jamming, and improve the motion efficiency, thereby reducing the reading error of the force gauge and increasing its accuracy. At the same time, since the cylindrical body 3, guide column 4, linear bearing 6, upper cover 1, lower cover 2, upper lifting ring 7 and lower lifting ring 8 are all made of 05Cr17Ni4Cu4Nb stainless steel, this material has high strength, can withstand large loads, has good high temperature resistance and corrosion resistance, and can adapt to complex working environments.

[0033] In summary, the mechanical tension gauge described in this utility model utilizes the lifting rings at both ends of the cylindrical body 3, connecting one end to the rotating safety hook of the wing parking mooring cable and the other end to the ground ring, thereby securing the aircraft parked on the ground and meeting the usage requirements. Its overall structure is simple, easy to operate and use, greatly improving work efficiency, and it is highly practical and suitable for widespread application.

[0034] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made using the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spring-type mechanical force gauge, characterized in that... The device includes a cylindrical body (3), a guide post (4), and a linear bearing (6). The upper end of the cylindrical body (3) is provided with an upper cover (1), and the lower end is provided with a lower cover (2). The guide post (4) is set inside the cylindrical body (3) through the linear bearing (6). Its upper end passes through the upper cover (1) and extends to the outside of the cylindrical body (3). An upper lifting ring (7) is provided at the upper end of the guide post (4), and a lower lifting ring (8) is provided on the lower cover (2) that passes through the lower cover (2). The lower lifting ring (8) is connected to the guide post (4) located inside the cylindrical body (3), and a compression spring (5) is provided inside the cylindrical body (3). The compression spring (5) is sleeved on the guide post (4).

2. The spring-type mechanical force gauge according to claim 1, characterized in that: The upper plug (1) and the lower plug (2) are respectively connected to the cylindrical body (3) by threads.

3. The spring-type mechanical force gauge according to claim 1, characterized in that: The linear bearing (6) is installed inside the upper cover (1), and the guide post (4) is slidably connected to the upper cover (1) through the linear bearing (6).

4. A spring-type mechanical force gauge according to claim 1, characterized in that: A cylindrical cover (9) is also provided on the upper cover (1). The cylindrical cover (9) is fitted outside the guide post (4). Several scale lines are vertically and evenly distributed on the cylindrical cover (9). A 0 reference line is also engraved on the cylindrical cover (9). The 0 reference line is flush with the surface of the upper cover (1).

5. A spring-type mechanical force gauge according to claim 4, characterized in that: The scale has four graduations, and the values ​​of the four graduations from bottom to top are 25kg, 50kg, 75kg and 100kg respectively.

6. A spring-type mechanical force gauge according to claim 1, characterized in that: A warning label is laser-printed on the outer side of the cylindrical body (3), and the warning label indicates that the weight should not exceed 100 kg when pre-tightened.

7. A spring-type mechanical force gauge according to claim 1, characterized in that: The compression spring (5) is made of 50CrVA material and its ultimate load is 1878KN; and the upper end of the compression spring (5) sleeved on the guide post (4) is in contact with the bottom of the linear bearing (6), while its lower end is in contact with the lower cover (2).

8. A spring-type mechanical force gauge according to claim 1, characterized in that: The cylindrical body (3), guide post (4), linear bearing (6), upper cover (1), lower cover (2), upper lifting ring (7) and lower lifting ring (8) are all made of 05Cr17Ni4Cu4Nb stainless steel.

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