Steel cable tension adjusting device and method

Abstract

The invention provides a steel cable tension adjusting device which comprises a shell, a tension adjusting device and a tension adjusting device. The driving gear is arranged in the cavity, and the driving gear is used for driving a driven gear to rotate; the driven gear is arranged in the cavity, the driven gear is meshed with the driving gear, and the driven gear is used for driving a sleeve to rotate; the sleeve is fixedly connected with the driven gear, and threaded holes are formed in the two ends of the sleeve; one end of each thread sleeve is in threaded connection with the sleeve, and the other end of each thread sleeve is connected with the steel cable; when the sleeve rotates, the two threaded sleeves can contract or stretch out of the threaded holes, and therefore the tension of the steel cable can be adjusted. Meanwhile, the invention further provides a steel cable tension adjusting method. The invention analyzes the adjustment of the steel cable, provides a steel cable tension adjusting device capable of saving 50% of human resources, and provides a steel cable tension adjusting method of the device in combination with the adjusting device.

Description

Technical Field

[0001] The present application belongs to the field of aviation assembly technology, and in particular relates to a steel cable tension adjustment device and method. Background Art

[0002] As a transmission system for aircraft flight control, steel cables have unparalleled advantages in reducing weight. In aircraft design in various countries, steel cables are used as one of the transmission systems in aircraft flight control systems. As a transmission mechanism or system of the flight control system, the core of steel cables lies in the adjustment of steel cable tension.

[0003] Traditional wire rope tension adjustment devices and methods require two people to cooperate with each other to complete the wire rope tension adjustment work, which is time-consuming, labor-intensive, and has low wire rope adjustment rate. In the process of field troubleshooting, it costs 100% more personnel expenses. Summary of the invention

[0004] Purpose of the invention: The present invention analyzes the adjustment of steel cables, proposes a steel cable tension adjustment device that can save 50% of human resources, and proposes a steel cable tension adjustment method using the device in combination with the adjustment device.

[0005] In a first aspect, the present application provides a wire rope tension adjustment device, the device comprising:

[0006] a housing having a cavity;

[0007] A driving gear is arranged in the cavity, and the driving gear is used to drive the driven gear to rotate;

[0008] A driven gear, disposed in the cavity, meshing with the driving gear, and used to drive the sleeve to rotate;

[0009] A sleeve, fixedly connected to the driven gear, with threaded holes provided at both ends of the sleeve;

[0010] Two screw sleeves, one end of each screw sleeve is threadedly connected to the casing, and the other end is connected to the steel cable;

[0011] When the sleeve rotates, the two threaded sleeves will shrink or extend out of the threaded hole, thereby adjusting the tension of the steel cable.

[0012] Preferably, a through hole is provided in the middle of the sleeve, and the driven gear comprises:

[0013] A mostly fixed gear has an opening, wherein a first pin hole is disposed in the opening;

[0014] A semi-movable gear has a second pin hole, and the semi-movable gear is arranged at the opening to form a complete gear;

[0015] A mounting hole is provided between the plurality of fixed gears and the plurality of movable gears; wherein the sleeve can be mounted in the mounting hole;

[0016] A fixing pin, one end of which is arranged in the second pin hole, and the other end of which passes through the through hole and the first pin hole in sequence, and the fixing pin is used to limit the axial displacement of the semi-movable gear.

[0017] Preferably, first sliding grooves are further provided in the middle of both sides of the majority fixed gear and the minority movable gear; the device further comprises:

[0018] A locking ring is arranged in the first sliding groove, and the locking ring is used to limit the radial displacement of the semi-movable gear.

[0019] Preferably, the device further comprises:

[0020] A circular bracket is arranged on both sides of the shell, and the circular bracket has a second sliding groove;

[0021] an end cover, arranged at an end of the second chute;

[0022] A fixed bracket, one end of which is arranged in the second slide groove, and the other end of which is used for mounting the screw sleeve;

[0023] A spring is arranged in the second sliding groove, one end of the spring contacts one end of the fixing bracket, and the other end of the spring contacts the end cover.

[0024] Preferably, the device further comprises:

[0025] The main shaft is arranged in the center hole of the driving gear.

[0026] Preferably, the device further comprises:

[0027] A ratchet rod, disposed in the second slide groove, the ratchet rod being connected to one side of the main shaft;

[0028] A hinge lever is arranged in the second slide groove, and the hinge lever is connected to the other side of the main shaft;

[0029] A ratchet wheel is connected to the ratchet rod, and the ratchet wheel is used to drive the ratchet rod to rotate.

[0030] Preferably, the device further comprises:

[0031] A driving motor is connected to the main shaft, and the driving motor is used to drive the main shaft to rotate forward or reverse.

[0032] Preferably, the housing comprises:

[0033] a first shell;

[0034] A second shell, the second shell is connected to the first shell to form the cavity; wherein the first shell is the same as the second shell.

[0035] Preferably, the device further comprises:

[0036] A retainer, one end of which is arranged on the main shaft through a large bearing, the other end of which is in contact with the first slide groove through a small bearing, and the retainer is fixed in the housing; the retainer is used to limit the motion trajectory of the driven gear.

[0037] In a second aspect, the present application also provides a method for manually adjusting the tension of a steel cable, the method comprising:

[0038] According to the corresponding ambient temperature, read the corresponding theoretical value of the steel cable tension;

[0039] Based on the steel cable tension adjustment device, adjusting the tension of the steel cable;

[0040] The actual value of the steel cable tension is measured by a steel cable tension meter; wherein the steel cable is provided with a steel cable tension meter;

[0041] If the theoretical value of the steel cable tension is equal to the actual value of the steel cable tension, the tension adjustment of the steel cable is completed.

[0042] Beneficial technical effects of this application:

[0043] The present invention provides a wire rope tension adjustment device and adjustment method. Through creative design, the original wire rope tension adjustment, which required two persons to cooperate with each other, is simplified to only one person to complete the wire rope tension adjustment, thus saving the human resources required for the wire rope tension adjustment.

[0044] By using a ratchet or hinge lever as the adjustment mechanism, the rotation angle is increased, and at the same time, the continuity of the cable tension adjustment is achieved, which greatly improves the adjustment efficiency compared to the intermittent adjustment of the original open-end wrench.

[0045] In addition, quick-release modes such as quick-release pins are used to achieve rapid disassembly and assembly of the adjustment device. The device is designed to be small, light and easy to carry. It can not only be used in the factory, but also meet the needs of being carried out for field troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the external structure of a manual cable tension adjustment device provided in an embodiment of the present application;

[0047] Figure 2It is a schematic diagram of the internal structure of a manual cable tension adjustment device provided in an embodiment of the present application;

[0048] Figure 3 is a schematic structural diagram of a retaining frame provided in an embodiment of the present application;

[0049] Figure 4 is a schematic diagram of the structure of a mostly fixed gear provided in an embodiment of the present application;

[0050] Figure 5 is a structural schematic diagram of a fixing bracket provided in an embodiment of the present application;

[0051] Figure 6 It is a structural schematic diagram of a main shaft provided in an embodiment of the present application;

[0052] Figure 7 It is a structural schematic diagram of a sleeve provided in an embodiment of the present application;

[0053] Figure 8 It is a structural schematic diagram of a screw sleeve provided in an embodiment of the present application;

[0054] Fig. 9 It is a schematic diagram of the structure of a circular bracket provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] See also Figure 1 and Figure 2 The present application provides a steel cable tension adjustment device, the device comprising:

[0056] a housing having a cavity;

[0057] A driving gear is arranged in the cavity, and the driving gear is used to drive the driven gear to rotate;

[0058] A driven gear, disposed in the cavity, meshing with the driving gear, and used to drive the sleeve to rotate;

[0059] A sleeve, fixedly connected to the driven gear, with threaded holes provided at both ends of the sleeve;

[0060] Two screw sleeves, one end of each screw sleeve is threadedly connected to the casing, and the other end is connected to the steel cable;

[0061] Two sector wheels are fixed on the aircraft body. The steel cable is wound around the sector wheels. One end of the steel cable is connected to a screw sleeve, and the other end of the steel cable is connected to another screw sleeve.

[0062] When the sleeve rotates, the two threaded sleeves will shrink or extend out of the threaded hole, thereby adjusting the tension of the steel cable.

[0063] In the embodiments of this application, please refer to Figure 7 The sleeve is provided with a through hole in the middle. Figure 4 The driven gear includes: a mostly fixed gear having an opening, in which a first pin hole is arranged; a slightly movable gear having a second pin hole, in which the slightly movable gear is arranged at the opening to form a complete gear; a mounting hole, in which a mostly fixed gear and the slightly movable gear are arranged; wherein the sleeve can be installed in the mounting hole; a fixing pin, in which one end of the fixing pin is arranged in the second pin hole, and the other end of the fixing pin passes through the through hole and the first pin hole in sequence, and the fixing pin is used to limit the axial displacement of the slightly movable gear.

[0064] Wherein, a first slide groove is also arranged in the middle of both sides of the majority fixed gear and the minority movable gear; the device also includes: a locking ring arranged in the first slide groove, and the locking ring is used to limit the radial displacement of the minority movable gear.

[0065] Among them, see Figure 5 The device also includes: a circular bracket, which is arranged on both sides of the shell, and the circular bracket has a second slide groove; an end cover, which is arranged at the end of the second slide groove; a fixed bracket, one end of which is arranged in the second slide groove, and the other end of the fixed bracket is used to install the screw sleeve; a spring, which is arranged in the second slide groove, one end of the spring is in contact with one end of the fixed bracket, and the other end of the spring is in contact with the end cover.

[0066] Among them, see Figure 6 , the device also includes: a main shaft, which is arranged in the center hole of the driving gear.

[0067] Wherein, the device also includes: a ratchet rod, which is arranged in the second sliding groove and connected to one side of the main shaft; a hinge lever, which is arranged in the second sliding groove and connected to the other side of the main shaft; a ratchet, which is connected to the ratchet rod and is used to drive the ratchet rod to rotate.

[0068] Wherein, the device further comprises: a driving motor connected to the main shaft, and the driving motor is used to drive the main shaft to rotate forward or reverse.

[0069] The present invention provides a simple, practical, concise and efficient automatic cable tension adjustment device and adjustment method; through creative design, the original cable tension adjustment requires one person (two hands) to hold an open-end wrench to clamp the cable screw sleeves at both ends, and another person to hold a wire or nail to adjust the cable tension and rotate the cable sleeve, and the two people need to cooperate to complete the cable tension adjustment. The improvement is that only one person is required to hold the cable tension automatic adjustment device to control the positive and negative input directions of the power supply of the driving motor to achieve automatic adjustment of the cable tension.

[0070] The present invention adopts a motor as the input of the adjustment device, and realizes the tightening or loosening of the tension of the steel cable by changing the positive and negative input directions of the power supply. The steel cable casing is fixed by a fixed bracket, and the steel cable screw sleeve is fixed by a radial pin on the movable gear 8. The whole device does not require the participation of human arms, realizes the automatic and continuous adjustment of the steel cable tension, and greatly improves the adjustment efficiency.

[0071] The present invention cleverly designs a quick-release pin to achieve rapid clamping between the cable sleeve and the device. The present invention cleverly adds a spring to simulate the stress of the cable's axial extension and shortening when the cable tension is adjusted. When the cable tension is tightened, the spring pushes the cable screw sleeves at both ends to move toward the cable sleeve. When the cable tension is loosened, the cable screw sleeve and the cable sleeve are completely loosened, and the fixed brackets at both ends can effectively prevent the cable from falling and damaging the aircraft in an instant when it is completely loosened, and can also prevent the cable from accidentally injuring the operator in an instant when it is loosened. The present invention is compact, light, and easy to carry. It can not only be used in production, but also meet the need to be carried out during after-sales troubleshooting. The present invention can shorten the cable tension adjustment cycle by about 20% and reduce the labor cost of cable tension adjustment by more than 30%. When troubleshooting in the field, 50% of travel expenses can be saved.

[0072] In other embodiments of the present application, the shell includes: a first shell; a second shell, the second shell is connected to the first shell to form the cavity; wherein the first shell is the same as the second shell.

[0073] Wherein, the device also includes: a retaining frame, one end of which is arranged on the main shaft through a large bearing, the other end of which is in contact with the first slide groove through a small bearing, and the retaining frame is fixed in the housing; the retaining frame is used to limit the movement trajectory of the driven gear.

[0074] In other embodiments of the present application, the present application further provides a method for adjusting the tension of a steel cable, the method comprising:

[0075] According to the corresponding ambient temperature, read the corresponding theoretical value of the steel cable tension;

[0076] Based on the steel cable tension adjustment device, adjusting the tension of the steel cable;

[0077] The actual value of the steel cable tension is measured by a steel cable tension meter; wherein the steel cable is provided with a steel cable tension meter;

[0078] If the theoretical value of the steel cable tension is equal to the actual value of the steel cable tension, the tension adjustment of the steel cable is completed.

[0079] In the embodiments of this application, please refer to Figure 8 and Fig. 9 The sleeve is a tubular structure with threads at both ends and a radial through hole in the middle. The main shaft is a hollow tube with a round outer circle and a square inner circle. The middle of its outer diameter bulges out a stepped shaft with equal diameters at both ends, which is set in the center hole of the driving gear; one end of the round bracket is in the shape of a letter "U", with an end cover mounting hole and a second slide groove in the middle, and the other end is in the shape of a letter "Y", with a fixing hole for the round bracket. The fixed bracket is in the shape of a letter "Zhan", with through holes at both ends. The through hole at one end is a cylindrical notch on one side and a bayonet on the other side. The other end is a square hole on the outside and a round hole on the inside, with two notches in the middle.

[0080] See also Figure 3 The retainer is in the shape of a "Y" and has a total of 4 through holes, two holes at the upper end, one in the middle, and one at the lower end. The upper and middle holes have the same diameter and are small bearing fixing holes; the lower part is a large bearing fixing hole.

[0081] In a feasible implementation, the present application also provides the following assembly process:

[0082] The first step, such as Figure 2 Complete the internal assembly of the manual cable tension adjustment device.

[0083] The second step is, Figure 1 Complete the assembly of the exterior and shell of the manual cable tension adjustment device.

[0084] The third step is to take out the quick release pin 16, and use the quick release pin 16 or other objects to move the locking ring 17 so that it slides along the slide grooves on the less movable gear 7 and the more fixed gear 8 to one side of the more fixed gear 8.

[0085] The fourth step is to separate the small movable gear 7 from the large fixed gear 8.

[0086] The fifth step is to pass the inner fixing pin of the least movable gear 7 through the mounting hole in the middle of the screw sleeve 10, and then insert the fixing pin of the movable gear 7 into the mounting hole of the fixed gear 8.

[0087] The sixth step is to use the quick release pin 16 or other objects to move the locking ring 17 so that it slides along the slide grooves on the less movable gear 7 and the more fixed gear 8 to one side of the less movable gear 7, and then the quick release pin 16 is inserted and rotated by a certain angle.

[0088] The seventh step is to slide the fixing bracket 11 to the side close to the end cover 2, install the sleeve 9, and adjust the position of the screw sleeve 10 to ensure that the sleeve 9 and the screw sleeve 10 are coaxial.

[0089] In other embodiments of the present application, the present application also provides a method for manually adjusting the tension of a steel cable, comprising the following steps:

[0090] Step 1, winding the connecting end of the cable screw sleeve around or fixing it to the fan-shaped wheel;

[0091] Step 2, fix the two sector wheels to the aircraft body using a neutral pin or the like;

[0092] Step 3, fix the two steel cable sleeves respectively using the bayonet on the fixing bracket 11;

[0093] Step 4, refer to the attached Figure 1 , Figure 2 As shown, the assembly of the device, the sleeve and the threaded sleeve is completed;

[0094] Step 5, read the ambient temperature value, and calculate the theoretical value of the cable tension according to the temperature cable tension curve table;

[0095] Step 6, using a cable tension measuring device to measure the actual value of the cable tension;

[0096] Step 7, adjust the cable tension according to the difference between the cable tension theory and the actual value, rotate the ratchet or hinge lever to drive the active gear to rotate, the active gear drives the driven size to rotate, and the screw sleeve rotates; the rotation of the screw sleeve causes the sleeves at both ends to produce relative displacement, thereby adjusting the cable tension;

[0097] Step 8, according to step 7, continuously rotate the ratchet or hinge lever until the actual cable tension value displayed on the cable tension meter is consistent with the theoretical cable tension value, and then stop rotating.

[0098] In other embodiments of the present application, the present application also provides a method for automatically adjusting the tension of a steel cable, comprising the following steps:

[0099] Step 1, winding or fixing the connecting end of the steel cable and the steel cable thread sleeve with the sector wheel;

[0100] Step 2, fix the two sector wheels to the aircraft body using a neutral pin or the like;

[0101] Step 3, fix the two steel cable sleeves respectively using the bayonet on the fixing bracket 11;

[0102] Step 4, refer to the attached Figure 1 , Figure 2 As shown, the assembly of the device, the sleeve and the threaded sleeve is completed;

[0103] Step 5, read the ambient temperature value, and calculate the theoretical value of the cable tension according to the temperature cable tension curve table;

[0104] Step 6, using a cable tension measuring device to measure the actual value of the cable tension;

[0105] Step 7, according to the difference between the theoretical and actual values ​​of the cable tension, the cable tension is adjusted, the motor rotates to drive the driving gear to rotate, the driving gear drives the driven gear to rotate, and the screw sleeve rotates; the rotation of the screw sleeve causes the sleeves at both ends to produce relative displacement, thereby adjusting the cable tension;

[0106] Step 8: According to step 7, the motor rotates continuously until the actual cable tension value displayed on the cable tension meter is consistent with the theoretical cable tension value, and then stops rotating.

Claims

1. A wire rope tension adjustment device, characterized in that: The device comprises: a housing having a cavity; A driving gear is arranged in the cavity, and the driving gear is used to drive the driven gear to rotate; A driven gear, disposed in the cavity, meshing with the driving gear, and used to drive the sleeve to rotate; A sleeve, fixedly connected to the driven gear, with threaded holes provided at both ends of the sleeve; Two screw sleeves, one end of each screw sleeve is threadedly connected to the casing, and the other end is connected to the steel cable; When the sleeve rotates, the two threaded sleeves will shrink or extend out of the threaded hole, thereby adjusting the tension of the steel cable.

2. The device according to claim 1, characterized in that A through hole is provided in the middle of the sleeve, and the driven gear comprises: A mostly fixed gear has an opening, wherein a first pin hole is disposed in the opening; A semi-movable gear has a second pin hole, and the semi-movable gear is arranged at the opening to form a complete gear; A mounting hole is provided between the plurality of fixed gears and the plurality of movable gears; wherein the sleeve can be mounted in the mounting hole; A fixing pin, one end of which is arranged in the second pin hole, and the other end of which passes through the through hole and the first pin hole in sequence, and the fixing pin is used to limit the axial displacement of the semi-movable gear.

3. The device according to claim 2, characterized in that A first slide groove is also provided in the middle of both sides of the majority fixed gear and the minority movable gear; the device also includes: A locking ring is arranged in the first sliding groove, and the locking ring is used to limit the radial displacement of the semi-movable gear.

4. The device according to claim 3, characterized in that The device also includes: A circular bracket is arranged on both sides of the shell, and the circular bracket has a second sliding groove; An end cover, arranged at the end of the second chute; A fixed bracket, one end of which is arranged in the second slide groove, and the other end of which is used for mounting the screw sleeve; A spring is arranged in the second sliding groove, one end of the spring contacts one end of the fixing bracket, and the other end of the spring contacts the end cover.

5. The device according to claim 4, characterized in that The device also includes: The main shaft is arranged in the center hole of the driving gear.

6. The device according to claim 5, characterized in that The device also includes: A ratchet rod, disposed in the second slide groove, the ratchet rod being connected to one side of the main shaft; A hinge lever is arranged in the second slide groove, and the hinge lever is connected to the other side of the main shaft; A ratchet wheel is connected to the ratchet rod, and the ratchet wheel is used to drive the ratchet rod to rotate.

7. The device according to claim 5, characterized in that The device also includes: A driving motor is connected to the main shaft, and the driving motor is used to drive the main shaft to rotate forward or reverse.

8. The device according to claim 1, characterized in that The housing comprises: a first shell; A second shell, the second shell is connected to the first shell to form the cavity; wherein the first shell is the same as the second shell.

9. The device according to claim 6 or 7, characterized in that The device also includes: A retainer, one end of which is arranged on the main shaft through a large bearing, the other end of which is in contact with the first slide groove through a small bearing, and the retainer is fixed in the housing; the retainer is used to limit the motion trajectory of the driven gear.

10. A method for manually adjusting the tension of a steel cable, characterized in that: The method comprises: According to the corresponding ambient temperature, read the corresponding theoretical value of the steel cable tension; Based on the steel cable tension adjustment device, adjusting the tension of the steel cable; The actual value of the steel cable tension is measured by a steel cable tension meter; wherein the steel cable is provided with a steel cable tension meter; If the theoretical value of the steel cable tension is equal to the actual value of the steel cable tension, the tension adjustment of the steel cable is completed.

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