Steel cable joint clamping device capable of keeping micro tension of steel cable

Abstract

The utility model discloses a steel cable connector clamping device capable of keeping micro tension of a steel cable. The steel cable connector clamping device comprises a handle rod, a connector connecting rod, a lug, a tension spring, a U-shaped connector, a locking bolt and a locking thin rod. The two ends of the handle rod are connected with the connector connecting rods in a hinged mode. A lug piece is fixedly arranged at the position, away from the handle rod, of the connector connecting rod. A tension spring is fixedly connected between the lugs; the end, away from the handle rod, of the connector connecting rod is fixedly connected with a U-shaped connector. A threaded hole in the U-shaped joint is used for mounting a locking bolt; the locking bolt is provided with a safety hole for installing a safety pin, and after the elastic screw sleeve is completely separated from the two steel cable joints, certain micro-tension can still exist in the steel cables at the two ends under the action of the tensioning force of the tensioning spring, so that the safety pin can be installed in the safety hole. And the steel cable can be effectively prevented from falling off from the structure at the moment that the elastic thread sleeve is completely separated from the two steel cable joints.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aviation maintenance, in particular to a steel cable joint clamping device capable of maintaining the micro tension of a steel cable. BACKGROUND

[0002] In the flight control system, landing gear retraction system, nose wheel steering system of modern aircraft and the early engine control system, the signal transmission mode includes mechanical transmission, electrical signal transmission, optical fiber transmission and their combination. Mechanical transmission is further divided into soft transmission and hard transmission, among which soft transmission is mainly steel cable and hard transmission is mainly hard rod. Due to the large volume and weight of hard transmission, it is difficult to arrange flexibly in the aircraft, and is only used in some local areas. In contrast, soft transmission has the advantages of flexible traversal through each corner of the aircraft, light weight and small volume. In addition, compared with electrical signal transmission and optical fiber transmission, soft (steel cable) transmission has stronger survivability, so soft (steel cable) transmission system is still used on modern aircraft.

[0003] In order to ensure the reliability of the transmission system, the steel cable needs to be checked regularly. Common faults of the steel cable in use include wear, broken wire, jamming and corrosion. When replacing the steel cable, a clamp is needed to fix the steel cable joints at both ends of the tension nut, and then a tool is used to rotate the tension nut, so that the tension nut can be disconnected from the two ends of the steel cable. However, manual tensioning of the steel cable is required to ensure a certain micro tension during this process. Patent No. 202320776043.3, an aviation steel cable pre-tensioning adjustment device, is widely used in civil aviation maintenance practice. The patent technology uses a chain type steel cable joint clamp to clamp two steel cable joints, and then cooperates with a small cross-shaped cutter or a small one-shaped cutter to rotate the tension nut to disassemble the steel cable. Since the chain type clamp cannot provide any tensioning force when the tension nut is completely disconnected from the steel cable joint, additional personnel are needed to manually tension the two steel cable joints at this moment, otherwise the steel cable may fall off the structure. In addition, if the user operates improperly, the two screws 23 matched with the steel cable joint may be separated from the U-shaped block 22 and lost, which brings certain risk to the maintenance work. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a steel cable joint clamping device capable of maintaining the micro tension of a steel cable to solve the problems in the above background technology.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a steel cable joint clamping device capable of keeping the micro tension of steel cable, including handle rod, joint connecting rod, lug, tension spring, U type joint, locking bolt, locking thin rod, both ends of the handle rod are connected with the joint connecting rod through the hinged connection mode, the lug is fixedly arranged on the position of the joint connecting rod far from the handle rod, the tension spring is fixedly connected between the lug, one end of the joint connecting rod far from the handle rod is fixedly connected with the U type joint, the threaded hole on the U type joint is used for installing the locking bolt, the locking bolt is provided with an insurance hole and can install the safety pin, the locking thin rod is fixedly connected on the side of the locking bolt far from the nut.

[0006] Preferably, the threaded portion of the locking bolt is provided with an insurance hole for installing a safety pin.

[0007] Preferably, the diameter of the locking thin rod is less than the diameter of the steel cable joint mounting hole, and the length of the locking thin rod is greater than the depth of the steel cable joint mounting hole.

[0008] Preferably, the distance between the two locking thin rods is less than the length of the tension nut in the natural state of the tension spring.

[0009] Compared with the prior art, the utility model has the beneficial effects that: after the tension nut is completely separated from the two steel cable joints, due to the tensioning force of the tension spring, a certain micro tension still exists in the two steel cables, the steel cable can be effectively prevented from falling off from the structure at the moment when the tension nut is completely separated from the two steel cable joints, the locking bolt on the U type joint becomes an integral whole with the U type joint through the insurance hole and the safety pin, and the loss of small parts on the utility model tool can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the whole structure schematic view of the utility model,

[0011] Figure 2 It is the partial structure schematic view of U type joint.

[0012] In the drawing: 1, handle rod, 2, joint connecting rod, 3, lug, 4, tension spring, 5, U type joint, 6, locking bolt, 7, locking thin rod. DETAILED DESCRIPTION

[0013] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range protected by the utility model.

[0014] Please refer to Figure 1 With Figure 2The utility model provides an embodiment: a steel cable joint clamping device can keep the micro tension of steel cable, which comprises handle rod 1, joint connecting rod 2, lug 3, tension spring 4, U-shaped joint 5, locking bolt 6, locking thin rod 7, the both ends of handle rod 1 are connected with joint connecting rod 2 through hinged mode, lug 3 is fixedly arranged on joint connecting rod 2 away from handle rod 1, tension spring 4 is fixedly connected between lug 3, U-shaped joint 5 is fixedly connected to the end of joint connecting rod 2 away from handle rod 1, the threaded hole is formed in U-shaped joint 5 and is used for installing locking bolt 6, locking thin rod 7 is fixedly connected to the side of locking bolt 6 away from the nut, locking thin rod 7 on U-shaped joint 5 is used to fix the steel cable joint, then the tension nut on the steel cable joint is disassembled, the steel cable joint will shrink and move at the moment when the tension nut is separated from the steel cable joint, tension spring 4 will provide tension at this time, and the micro tension on the steel cable is guaranteed, and the inconvenience and trouble caused by the falling of the steel cable from the structure can be prevented.

[0015] The safety hole is formed in locking bolt 6, the safety pin can be installed in the safety hole to prevent the loss of tools caused by the accidental falling of locking bolt 6 from U-shaped joint 5, the diameter of locking thin rod 7 is less than the diameter of the steel cable joint mounting hole, the length of locking thin rod 7 is greater than the depth of the steel cable joint mounting hole, so that locking thin rod 7 can be connected with the steel cable joint, and the distance between the two locking thin rods 7 is less than the length of the tension nut in the natural state of tension spring 4, so that tension spring 4 can provide tension when the steel cable joint moves.

[0016] Working principle:

[0017] Installation process: the two locking bolts 6 are loosened, the distance between the locking thin rod 7 connected with the U-shaped joint 5 and the inner surface of the U-shaped joint 5 is changed, the steel cable joint is conveniently put in, the locking thin rod 7 on any one U-shaped joint 5 is aligned with the mounting hole on the steel cable joint, the locking bolt 6 on the U-shaped joint 5 is tightened, so that the locking thin rod 7 completely enters the steel cable joint mounting hole and is engaged with the steel cable joint, the other U-shaped joint 5 is pulled, and the same method as the above two steps is used to make it completely engaged with the other steel cable joint mounting hole, the tool is inserted into the center hole of the tension nut, and the tension nut is rotated, so that the steel cable tension adjustment or the steel cable dismounting can be realized.

[0018] Steel cable dismounting process: the steel cables of each control system of the airplane have specific dismounting procedures, and the general dismounting procedure is introduced here, and when the control steel cable of a specific system is dismounted, the corresponding AMM manual or specific work card requirements should be used;

[0019] The general procedure for dismounting the airplane control steel cable is as follows:

[0020] 1. Install the alignment pin to make the system in neutral position. The installation position of the alignment pin is on the drum or the sector. The installation position of the alignment pin is different for different cables. The specific position can be found in the aircraft maintenance manual.

[0021] 2. Use the marking tape to mark the cable joint to be removed;

[0022] 3. Install the tool into the cable joint installation hole according to the tool implementation mode 1 of the utility model;

[0023] 4. Use the tool to loosen the tension nut and remove the tension of the cable;

[0024] 5. Due to the tensioning effect of the tension spring 4 in the tool, the cable will not fall off from the structure (at this time, the maintenance personnel can free their hands, and the construction is more convenient);

[0025] 6. Cut off the old cable joint, and connect the new cable with the old cable together;

[0026] 7. Keep the slight tension of the cable, so that the cable will not slide out of the groove of the pulley and the sector;

[0027] 8. Connect the new and old cables together before pulling out the old cable. Install the new cable in place while removing the old cable.

[0028] 9. Install the threaded joint on both sides of the tension nut at the same time, so that the amount of screwing of the thread is consistent, and the thread exposed outside the nut does not exceed 3 teeth;

[0029] 10. Adjust the cable tension;

[0030] 11. Remove the tool and the alignment pin.

Claims

1. A wire joint clamping device that can maintain a slight tension of a wire, comprising a handle rod (1), characterized in that: Both ends of the handle rod (1) are connected with the joint connecting rod (2) through hinged mode; the ear piece (3) is fixedly arranged on the end of the joint connecting rod (2) far from the handle rod (1), the tension spring (4) is fixedly connected between the ear pieces (3), the U-shaped joint (5) is fixedly connected with the end of the joint connecting rod (2) far from the handle rod (1), the locking bolt (6) is arranged on the U-shaped joint (5), and the locking bolt (6) is fixedly connected with the locking thin rod (7) on the side far from the nut.

2. A wireline connector clamp apparatus capable of maintaining a micro tension in a wireline according to claim 1, characterized in that: The threaded part of the locking bolt (6) is provided with a safety hole.

3. A wireline connector clamp apparatus capable of maintaining a micro tension in a wireline according to claim 1, characterized in that: The diameter of the locking thin rod (7) is smaller than the diameter of the steel cable joint mounting hole, and the length of the locking thin rod (7) is greater than the depth of the steel cable joint mounting hole.

4. The cable connector clamp of claim 1, wherein: The distance between the two locking thin rods (7) is smaller than the length of the tension nut in the natural state of the tension spring (4).

Images