Double-thread self-insertion type fastening structure of power transmission and transformation system

Abstract

The utility model relates to the technical field of power transmission and transformation systems, and discloses a power transmission and transformation system double-thread self-insertion type fastening structure which comprises a fastening piece, a connecting hole is formed in the fastening piece, a screw rod is installed in the connecting hole through a limiting assembly, two thread parts are arranged on the outer surface of the screw rod, and the two thread parts are arranged on the outer surface of the screw rod. The outer surfaces of the two threaded parts are in threaded connection with a first fastening nut and a second fastening nut correspondingly, so that the device can perform double locking and fixing on the screw rod through the first fastening nut and the second fastening nut with the same thread screwing direction; during locking, the tightening torque of the first fastening nut counteracts the loosening torque of the second fastening nut, so that the loosening phenomenon of the first fastening nut and the second fastening nut under the swinging condition can be avoided, and meanwhile, the screw rod can be prevented from rotating in the connecting hole through the limiting assembly; therefore, the locking effect of the device can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission and transformation system technical field, concretely is a kind of power transmission and transformation system double thread self-inserting type fastening structure. BACKGROUND

[0002] The electrical equipment such as main transformer, high (low) voltage reactor, station transformer, generator and motor installed and used in substation (power plant) can generate vibration in operation;Substation or high-voltage, super (super-high) voltage power transmission and transformation overhead hardware will swing under natural conditions, for example, swing caused by wind, certain grade wind can make power transmission line and related overhead connection hardware swing back and forth, make the bolt nut of fastening place loose, therefore we propose a kind of power transmission and transformation system double thread self-inserting type fastening structure to prevent bolt nut from loosening. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of power transmission and transformation system double thread self-inserting type fastening structure, solve the problem proposed in background art.

[0004] The application embodiment provides a kind of power transmission and transformation system double thread self-inserting type fastening structure, including fastener, the inside of the fastener is equipped with connecting hole, the inside of the connecting hole is equipped with screw rod by limiting component, the outer surface of the screw rod is equipped with two threaded portions, the outer surface of two threaded portions is respectively threadedly connected with first fastening nut and second fastening nut, the opposite side of the first fastening nut and second fastening nut is provided with plug lock mechanism.

[0005] By adopting the above technical scheme, the device can more stably fix the fastener, thereby greatly improving the practicability of the device.

[0006] Optionally, the limiting component includes a limiting groove formed in the inner wall of the connecting hole on both sides and a limiting block installed on both sides of the screw rod.

[0007] By adopting the above technical scheme, the limiting component can prevent the screw rod from rotating inside the connecting hole, thereby further improving the locking effect of the device.

[0008] Optionally, the plug lock mechanism includes a fixed plate installed on the opposite side of the first fastening nut and the second fastening nut and a positioning hole formed on both sides of the screw rod, and a bolt is arranged between the fixed plate and the positioning hole.

[0009] By adopting the above technical scheme, the device can position and fix the first fastening nut and the second fastening nut through the plug lock mechanism, thereby avoiding the loosening of the first fastening nut and the second fastening nut during work, and further greatly improving the fastening stability of the device.

[0010] Optionally, the bolt piece comprises a fixed rod arranged through the inside of the fixed plate, the inside of the fixed rod is provided with a pull rod, one end of the pull rod extends to the outside of the fixed rod and is fixedly connected with a positioning rod, the other end of the pull rod extends to the outside of the fixed rod and is fixedly connected with a pull plate, the outer surface of the pull rod is provided with a spring, and one side of the positioning rod extends to the inside of the positioning hole.

[0011] By adopting the technical scheme, the positioning effect of the bolt piece is utilized, so that the stability of the device is stronger.

[0012] Optionally, the inner threads of the first fastening nut and the second fastening nut are of the same direction.

[0013] By adopting the technical scheme, the screw rod can be double-locked and fixed by the first fastening nut and the second fastening nut of the same thread direction, and the loosening torque of the second fastening nut can be offset by the tightening torque of the first fastening nut when locked, so that the loosening phenomenon of the first fastening nut and the second fastening nut under swinging conditions can be avoided.

[0014] Optionally, the limiting block is matched with the limiting groove.

[0015] By adopting the technical scheme, the locking effect of the screw rod is better.

[0016] Optionally, the outer thread of the threaded part is matched with the inner thread of the first fastening nut and the second fastening nut.

[0017] By adopting the technical scheme, the locking effect of the first fastening nut and the second fastening nut is better.

[0018] Optionally, the outer surface of the pull plate is fixedly connected with an anti-skid sleeve.

[0019] By adopting the technical scheme, the anti-skid sleeve can avoid the hand slipping phenomenon.

[0020] Compared with the prior art, the beneficial effects of the technical scheme of the present application are as follows:

[0021] This application's technical solution, by setting up a screw, a first fastening nut, a second fastening nut, a threaded portion, a connecting hole, a limiting groove, and a limiting block, allows the device to double-lock and fix the screw using the first and second fastening nuts with the same thread direction. During locking, the tightening torque of the first fastening nut counteracts the loosening torque of the second fastening nut, thus preventing loosening of the first and second fastening nuts under swinging conditions. Simultaneously, the limiting component prevents the screw from rotating inside the connecting hole, further improving the locking effect of the device. This application's technical solution, by setting up a fixing plate, a positioning hole, a fixing rod, a pull rod, a positioning rod, a pull plate, and a spring, allows the device to position and fix the first and second fastening nuts using a locking mechanism, thereby preventing loosening of the first and second fastening nuts during operation and greatly improving the fastening stability of the device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the overall double-threaded self-insertion type fastening structure for a power transmission and transformation system according to the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the fastener in a double-threaded self-inserting fastening structure for a power transmission and transformation system according to the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the screw in a double-threaded self-inserting fastening structure for a power transmission and transformation system according to this utility model.

[0025] Figure 4 This is a cross-sectional view of the locking mechanism inside a double-threaded self-inserting fastening structure for a power transmission and transformation system according to this utility model.

[0026] In the diagram: 1. Fastener; 2. Screw; 3. First fastening nut; 4. Threaded part; 5. Second fastening nut; 6. Connecting hole; 7. Limiting groove; 8. Limiting block; 9. Fixing plate; 10. Fixing rod; 11. Pull rod; 12. Positioning rod; 13. Pull plate; 14. Spring; 15. Positioning hole. Detailed Implementation

[0027] Please see Figures 1-4 This utility model provides a technical solution: a double-threaded self-inserting fastening structure for power transmission and transformation systems, including a fastener 1. The fastener 1 has a connecting hole 6 inside. A screw 2 is installed inside the connecting hole 6 through a limiting component. The outer surface of the screw 2 has two threaded parts 4. The outer surfaces of the two threaded parts 4 are respectively threaded with a first fastening nut 3 and a second fastening nut 5. A locking mechanism is provided on the opposite side of the first fastening nut 3 and the second fastening nut 5.

[0028] By adopting the technical scheme, the device can more stably fix the fastener 1, thereby greatly improving the practicability of the device.

[0029] In the embodiments of the present application, as shown in Figures 2-3 The limiting assembly includes limiting grooves 7 formed in the inner walls on both sides of the connecting hole 6 and limiting blocks 8 installed on both sides of the screw rod 2.

[0030] By adopting the technical scheme, the limiting assembly can prevent the screw rod 2 from rotating inside the connecting hole 6, thereby further improving the locking effect of the device.

[0031] In the embodiments of the present application, as shown in Figures 3-4 The plug-in lock mechanism includes fixed plates 9 installed on the opposite sides of the first fastening nut 3 and the second fastening nut 5 and positioning holes 15 formed on both sides of the screw rod 2, and a latch is arranged between the fixed plate 9 and the positioning hole 15.

[0032] By adopting the technical scheme, the device can position and fix the first fastening nut 3 and the second fastening nut 5 through the plug-in lock mechanism, thereby avoiding loosening of the first fastening nut 3 and the second fastening nut 5 during work, and greatly improving the fastening stability of the device.

[0033] In the embodiments of the present application, as shown in Figure 4 The latch includes a fixed rod 10 arranged through the inside of the fixed plate 9, a pull rod 11 arranged inside the fixed rod 10, a positioning rod 12 fixedly connected to one end of the pull rod 11 extending to the outside of the fixed rod 10, a pull plate 13 fixedly connected to the other end of the pull rod 11 extending to the outside of the fixed rod 10, a spring 14 arranged on the outer surface of the pull rod 11, and one side of the positioning rod 12 extending to the inside of the positioning hole 15.

[0034] By adopting the technical scheme, the stability of the device is stronger due to the positioning effect of the latch.

[0035] In the embodiments of the present application, as shown in Figure 1 The inner threads of the first fastening nut 3 and the second fastening nut 5 are in the same direction.

[0036] By adopting the technical scheme, the device can double-lock and fix the screw rod 2 through the first fastening nut 3 and the second fastening nut 5 with the same thread direction, and the loosening torque of the second fastening nut 5 can be offset by the tightening torque of the first fastening nut 3 during locking, thereby avoiding loosening of the first fastening nut 3 and the second fastening nut 5 under swinging conditions.

[0037] In the embodiments of the present application, as shown in Figures 2-3As shown, the limiting block 8 is matched with the limiting groove 7.

[0038] By adopting the above technical scheme, the locking effect of the screw rod 2 is better.

[0039] In the embodiments of the present application, as shown in the drawings, Figures 1-3 As shown, the external thread of the threaded part 4 is matched with the internal thread of the first fastening nut 3 and the second fastening nut 5.

[0040] By adopting the above technical scheme, the locking effect of the first fastening nut 3 and the second fastening nut 5 is better.

[0041] In the embodiments of the present application, as shown in the drawings, Figure 1 As shown, the outer surface of the pull plate 13 is fixedly connected with the anti-skid sleeve.

[0042] By adopting the above technical scheme, the anti-skid sleeve can avoid the hand slipping phenomenon.

[0043] In use, the operator first inserts the screw rod 2 into the connecting hole 6, and then rotates the screw rod 2, so that the screw rod 2 drives the limiting block 8 to rotate to the limiting groove 7, and then inserts the limiting block 8 into the limiting groove 7, so as to avoid the free rotation of the screw rod 2 in the connecting hole 6. When the screw rod 2 is installed, the operator can tighten the first fastening nut 3 and the second fastening nut 5 by using the two threaded parts 4 on the screw rod 2, and when the first fastening nut 3 and the second fastening nut 5 are matched with the screw rod 2, the operator can first pull the pull rod 11 through the pull plate 13, so that the pull rod 11 can pull the positioning rod 12 into the fixed rod 10, and then align the threaded holes of the first fastening nut 3 and the second fastening nut 5 with the screw rod 2 and rotate them in. When the first fastening nut 3 and the second fastening nut 5 are in the tightened state, the positioning hole 15 is just rotated to the position of the positioning rod 12, at which time the positioning rod 12 will be quickly inserted into the positioning hole 15 under the elastic action of the spring 14, so as to quickly position and fix the first fastening nut 3 and the second fastening nut 5, thereby avoiding the loosening of the first fastening nut 3 and the second fastening nut 5 during work, thereby greatly improving the fastening stability of the device. When the positioning rod 12 is damaged, the loosening torque of the second fastening nut 5 can be offset by the tightening torque of the first fastening nut 3, so as to avoid the loosening phenomenon of the first fastening nut 3 and the second fastening nut 5 under the swinging condition.

Claims

1. A power transmission system double thread self-insertion type fastening structure comprising a fastener (1), characterized in that: The fastener (1) is internally provided with a connecting hole (6), the connecting hole (6) is internally provided with a screw rod (2) through a limiting assembly, the outer surface of the screw rod (2) is provided with two threaded portions (4), the outer surfaces of the two threaded portions (4) are respectively threadedly connected with a first fastening nut (3) and a second fastening nut (5), and the opposite sides of the first fastening nut (3) and the second fastening nut (5) are provided with plug-in lock mechanisms.

2. A power transmission system double thread self-inserting fastening structure according to claim 1, characterized in that: The limiting assembly comprises limiting grooves (7) provided in the inner walls of the connecting hole (6) on both sides and limiting blocks (8) installed on both sides of the screw rod (2).

3. A power transmission system double thread self-inserting fastening structure according to claim 1, characterized in that: The plug-in lock mechanism comprises a fixed plate (9) installed on the opposite sides of the first fastening nut (3) and the second fastening nut (5) and positioning holes (15) provided in both sides of the screw rod (2), and a bolt is arranged between the fixed plate (9) and the positioning hole (15).

4. A power transmission system double thread self-plugging fastening structure according to claim 3, characterized in that: The bolt comprises a fixed rod (10) penetratingly arranged in the inside of the fixed plate (9), the inside of the fixed rod (10) is provided with a pull rod (11), one end of the pull rod (11) extends to the outside of the fixed rod (10) and is fixedly connected with a positioning rod (12), the other end of the pull rod (11) extends to the outside of the fixed rod (10) and is fixedly connected with a pull plate (13), the outer surface of the pull rod (11) is provided with a spring (14), and one side of the positioning rod (12) extends to the inside of the positioning hole (15).

5. A power transmission system double thread self-plugging fastening structure according to claim 1, characterized in that: The inner threads of the first fastening nut (3) and the second fastening nut (5) are of the same rotation direction.

6. A power transmission system double thread self-plugging fastening structure according to claim 2, characterized in that: The limiting blocks (8) are matched with the limiting grooves (7).

7. A power transmission system double thread self-plugging fastening structure according to claim 1, characterized in that: The outer threads of the threaded portions (4) are matched with the inner threads of the first fastening nut (3) and the second fastening nut (5).

8. A power transmission system double thread self-plugging fastening structure according to claim 4, characterized in that: The outer surface of the pull plate (13) is fixedly connected with an anti-skid sleeve.

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