Assembling tool for opening spring of pole-mounted circuit breaker

Abstract

According to the technical scheme, the pole-mounted circuit breaker opening spring assembly tool is characterized in that one end of the sliding rod is fixedly installed on a left sliding rod support, the other end of the sliding rod is fixedly installed on a right sliding rod support, the outer surface of the sliding rod is movably sleeved with a sliding block, and the sliding block is movably sleeved with a sliding block; a fixing nut is fixedly installed on one side of the interior of the sliding block, a lead screw is movably arranged in the fixing nut in a sleeved mode, a manual rotating disc is fixedly installed at one end of the lead screw, and a sliding rod is provided with a fixing assembly to assist the whole device in fixing and supporting. And meanwhile, a manual rotating disc is arranged, so that a movable nut can be conveniently moved back and forth through a lead screw.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to an assembly tool for a trip spring of a pole-mounted circuit breaker. Background Art

[0002] A pole-mounted circuit breaker is an outdoor high-voltage electrical device that can close and open the rated current under normal working conditions, and close and open the rated short-circuit current not exceeding its maximum allowable value under abnormal working conditions. It is mainly used in 12kV outdoor power distribution systems of rural and urban networks. The spring operating mechanism used by the pole-mounted circuit breaker is an important component of the vacuum switch, which is used to control the opening and closing actions of the switch. The opening spring is one of the key components of the spring operating mechanism. It absorbs energy and stores elastic potential energy. When the elastic potential energy stored in the spring is released, it can push the spring operating mechanism to operate the pole-mounted circuit breaker to open, thereby achieving the purpose of disconnecting the circuit. The opening spring can not only control the opening speed, but also affect the reliability, stability and safety of the opening. The advantage of the circuit breaker using the opening spring design is that it has a simple structure, low manufacturing cost and good reliability. It is generally made of high-elastic alloy steel or stainless steel and other materials. Daily maintenance and use must ensure that its surface is smooth, undamaged and rust-free. In addition, its performance must be tested regularly to ensure that it meets the use requirements of the pole-mounted circuit breaker.

[0003] Usually, the assembly steps of the pole-mounted circuit breaker trip spring are as follows: 1. Place the bottom surface of the mechanism compartment body with the installed pole facing up on the workbench; 2. Install the main pull rod; 3. Install the circuit breaker trip spring. Since the pole-mounted circuit breaker trip spring is a tension spring, it is generally assembled by stretching the spring with simple tools. The disadvantages of this assembly method are: 1. It consumes manpower and uses manpower to forcibly pull the spring apart. This method is greatly affected by the individual quality of the assembler; 2. The tools are simple, and usually a hook-shaped tool is made to hook the edge of the spring and then use manpower to pull it. This method will cause the spring to deform, the outer surface to be damaged, and the surface treatment process of the spring to be destroyed, thereby affecting the reliability of the spring. Reliability and stability, 3. The spring is easy to cause scratches on the shaft hole during installation, which aggravates wear. During assembly, whether a hook-type tool is used to hook the edge of the spring or a flexible cable is used to pull the end of the spring, the force to pull the spring open is manpower, and manpower generally cannot achieve constant and lasting output. During the assembly of the opening spring, the pin shaft needs to be aligned and perforated. If there is a stepped shaft, the perforation needs to be aligned twice. This process requires a constant output force to stretch the spring to complete the assembly smoothly. If the pulling force fluctuates, the alignment cannot be completed, or even if it is aligned, scratches will be caused. If there are scratches on the shaft hole of the opening spring, it may affect the opening time, opening speed and other key parameters of the circuit breaker, which needs to be paid great attention to;

[0004] By designing a pole-mounted circuit breaker opening spring assembly tool, the opening spring is assembled using the self-locking principle of a cylindrical spiral screw; the advantage of this design is that, through the direct-acting spiral pair composed of a screw and a nut, a small torque can be input at one end and a large push-pull force can be output at the other end. This force can achieve a constant and lasting output, and people will not consume extra effort during the operation. Any operator can complete the stretching work of the spring alone. The present invention also designs a lossless opening spring end clamping system, which mainly consists of two symmetrical, The clamp is made of brass, and the contact part between the clamp and the opening spring is processed with a groove according to the spiral shape of the end of the opening spring. When clamping, first fit the groove on the clamp tightly with the convex groove at the end of the opening spring, and then fix the two clamps with screws to achieve lossless clamping of the opening spring. The key innovation of this design is that through the combination of lossless opening spring clamping system and direct-acting spiral pair transmission, it can fully realize the convenient, labor-saving and precise assembly of the opening spring of the pole-mounted circuit breaker. This opening spring tooling can be widely used in the assembly of the opening spring of the pole-mounted circuit breaker. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pole-mounted circuit breaker trip spring assembly tool, which solves the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A pole-mounted circuit breaker trip spring assembly tool comprises: a slide rod, one end of the slide rod is fixedly mounted on a left slide rod support, the other end of the slide rod is fixedly mounted on a right slide rod support, a slide rod is movably sleeved on the outer surface of the slide rod, a fixed nut is fixedly mounted on one side of the inner part of the slide rod, a lead screw is movably sleeved inside the fixed nut, a manual turntable is fixedly mounted on one end of the lead screw, and the slide rod is provided with a fixing component to help the entire device to perform a fixed support function.

[0008] By adopting the above technical solution, the sliding bar is provided to facilitate the movement of the slider, and the manual turntable is provided to facilitate us to move the movable nut back and forth through the lead screw.

[0009] Preferably, the fixing assembly includes a left long support, the left long support is fixedly installed on the bottom of the left slide bar support, one side of the left long support is fixedly installed with a front cross support, one end of the front cross support is fixedly installed with a right long support, the right long support is fixedly installed on the bottom of the right slide bar support, one side of the right long support is fixedly installed with a rear cross support, and one end of the rear cross support is fixedly installed on the left long support.

[0010] By adopting the above technical solution and providing a fixing component, the entire device is helped to perform the function of fixed support, and it is convenient for us to install the device when using it.

[0011] Preferably, a movable sleeve on the outer surface of the lead screw is provided with a movable nut, a pin shaft is provided between the two sides inside the movable nut, a right clamp block is provided on one side of the movable nut, a left clamp block is provided on one side of the movable nut, and left and right clamp block fixing components are provided between the movable nuts, and the right clamp block and the left clamp block are installed between the movable nut through the left and right clamp block fixing components.

[0012] By adopting the above technical solution, the movable nut is provided to facilitate our movement and reduce the difficulty of installation. At the same time, the left clamp block and the right clamp block are provided to facilitate our clamping of the coil during installation.

[0013] Preferably, a right clamp support is fixedly installed on the top of the right long support, a right crank arm is fixedly installed on one side of the right clamp support, an internal movable sleeve of the right crank arm is provided with a right handwheel shaft, a right handwheel is fixedly installed on one end of the right handwheel shaft, and a right fixed block is fixedly installed on the other end of the right handwheel shaft.

[0014] By adopting the above technical solution, the right hand wheel and the right hand wheel shaft are provided to facilitate movement and position fixation, and the device is relatively simple and convenient to maintain.

[0015] Preferably, a left clamp support is fixedly installed on the top of the left long support, a left crank arm is fixedly installed on one side of the left clamp support, an internal movable sleeve of the left crank arm is provided with a left handwheel shaft, a left handwheel is fixedly installed on one end of the left handwheel shaft, and a left fixed block is fixedly installed on the other end of the left handwheel shaft.

[0016] By adopting the above technical solution, the left hand wheel and the left hand wheel shaft are provided to facilitate movement and position fixation, and the device is relatively simple and convenient to maintain.

[0017] Preferably, a connecting shaft is provided at the bottom of the front cross support, and a brake opening spring to be installed is provided at the top of the rear cross support.

[0018] By adopting the above technical solution, the device is installed on the circuit breaker by setting the opening spring to be installed, which is convenient for replacement, saves manpower time and ensures accurate installation.

[0019] In summary, the present invention mainly has the following beneficial effects: it can realize non-deformation and scratch-free non-destructive installation of the pole-mounted circuit breaker opening spring, has a small size, a simple principle, a stable performance, is reliable and durable, can realize the precise positioning and installation of the pole-mounted circuit breaker opening spring, greatly saves manpower, and can be operated by one person.

[0020] It can realize non-deformation and scratch-free installation of the pole-mounted circuit breaker opening spring. It has small size, simple principle, stable performance, reliable and durable. It can realize precise positioning and installation of the pole-mounted circuit breaker opening spring, greatly saving manpower and can be operated by one person. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the left clamp block of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the right clamp block of the present invention;

[0024] Figure 4 It is a schematic diagram of the working structure of the present invention.

[0025] : 1. slide bar; 2. manual turntable; 3. fixed nut; 4. slider; 5. right slide bar support; 6. movable nut; 7. lead screw; 8. pin shaft; 9. right long support; 10. right clamp block; 11. rear horizontal support; 12. right fixture support; 13. right turning arm; 14. right handwheel; 15. right handwheel shaft; 16. right fixed block; 17. opening spring to be installed; 18. left fixed block; 19. left handwheel shaft; 20. left handwheel; 21. left turning arm; 22. left fixture support; 23. left clamp block; 24. left and right clamp block fixing parts; 25. left long support; 26. front horizontal support; 27. left slide bar support; 28. connecting shaft. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] refer to Figure 1 , Figure 2 and Figure 3 A column mounted circuit breaker trip spring assembly tool, comprising a slide bar 1, one end of the slide bar 1 is fixedly mounted on a left slide bar support 27, the other end of the slide bar 1 is fixedly mounted on a right slide bar support 5, a slide bar 4 is movably sleeved on the outer surface of the slide bar 1, and one side of the inner side of the slide bar 4 is fixedly mounted on the left slide bar support 27, and the other end of the slide bar 1 is fixedly mounted on the right slide bar support 5.

[0028] A fixed nut 3 is fixedly installed, and the internal movable sleeve of the fixed nut 3 is provided with a screw 7, and a manual turntable 2 is fixedly installed at one end of the screw 7. The slide bar 1 is provided with a fixed component to help the entire device to perform a fixed support function. The slide bar 1 is convenient for the movement of the slider 4. At the same time, the manual turntable 2 is convenient for us to move the movable nut 6 back and forth through the screw 7. The fixed component includes a left long support 25, and the left long support 25 is fixedly installed at the bottom of the left slide bar support 27. A front side cross support 26 is fixedly installed on one side of the left long support 25, and one end of the front side cross support 26 is fixedly installed on the right long support 9. The right long support 9 is fixedly installed on the bottom of the right slide bar support 5, and a rear side cross support 1 is fixedly installed on one side of the right long support 9. 1. One end of the rear horizontal support 11 is fixedly installed on the left long support 25. By setting a fixing component, the whole device is helped to perform the fixed support function, and it is convenient for us to install the device when in use. The outer surface of the lead screw 7 is provided with a movable nut 6, and a pin shaft 8 is provided between the two sides of the inside of the movable nut 6. One side of the movable nut 6 is provided with a right clamping block 10, and one side of the movable nut 6 is provided with a left clamping block 23. Left and right clamping block fixing parts 24 are provided between the movable nuts 6. The right clamping block 10 and the left clamping block 23 are installed between the movable nuts 6 through the left and right clamping block fixing parts 24. The movable nut 6 is provided to facilitate our movement and reduce the difficulty of installation. At the same time, the left clamping block 23 and the right clamping block 10 are provided to facilitate our clamping of the coil during installation.

[0029] refer to Figure 2 , Figure 3 and Figure 4A right-side clamp support 12 is fixedly installed on the top of the right-side long support 9, and a right-side crank arm 13 is fixedly installed on one side of the right-side clamp support 12. The internal movable sleeve of the right-side crank arm 13 is provided with a right-side handwheel shaft 15, and a right-side handwheel 14 is fixedly installed on one end of the right-side handwheel shaft 15, and a right-side fixed block 16 is fixedly installed on the other end of the right-side handwheel shaft 15. By arranging the right-side handwheel 14 and the right-side handwheel shaft 15, it is convenient to move and fix the position. At the same time, this device is relatively simple and convenient for maintenance. A left-side clamp support 22 is fixedly installed on the top of the left-side long support 25, and one side of the left-side clamp support 22 is fixedly installed A left-side crank arm 21 is provided, and an internal movable sleeve of the left-side crank arm 21 is provided with a left-side handwheel shaft 19. A left-side handwheel 20 is fixedly installed on one end of the left-side handwheel shaft 19, and a left-side fixed block 18 is fixedly installed on the other end of the left-side handwheel shaft 19. The left-side handwheel 20 and the left-side handwheel shaft 19 are provided to facilitate movement and position fixation. At the same time, this device is relatively simple and convenient to maintain. A connecting shaft 28 is provided at the bottom of the front side cross support 26, and a to-be-installed opening spring 17 is provided at the top of the rear side cross support 11. The device is installed on the circuit breaker by providing the to-be-installed opening spring 17, which is convenient for replacement, saves manpower time, and is accurately installed.

[0030] Working principle: Please refer to Figure 1-Figure 4 As shown, when in use, first place the present invention in Figure 4 The position shown is fixed, and the right hand wheel 14 is manually twisted to rotate the right fixing block 16, and the right fixing block 16 contacts with the circuit breaker housing to achieve a fixing effect. The left hand wheel 20 is manually twisted to rotate the left fixing block 18, and the left fixing block 18 contacts with the circuit breaker housing to achieve a fixing effect. At this point, the overall fixing step of the present invention is completed, and the right clamping block 10 and the left clamping block 23 are clamped from both sides to hold the end of the to-be-installed side of the opening spring 17 to be installed. The right clamping block 10 and the left clamping block 23 are designed with a groove that is exactly the same as the outer contour of the opening spring 17 to be installed. The right clamping block 10 and the left clamping block 23 are fastened and connected with the left and right clamping block fixing parts 24 to complete the installation of the opening spring 17 to be installed and the right clamping block 10 and the left clamping block 23. To tighten the connection, first slide the slider 4 to the working position close to the installation end of the connecting shaft 28, and then connect the right clamp 10 and the left clamp 23 to the movable nut 6 through the pin 8. At this time, the central axis of the screw 7 is parallel to the central axis of the opening spring 17 to be installed. After all connections are completed, manually rotate the manual turntable 2 clockwise, and the movable nut 6 will gradually approach the fixed nut 3 along the XX direction, and the opening spring 17 to be installed will be stretched. Since the threaded connection pair has self-locking properties, the opening spring 17 to be installed can be accurately positioned at any stretching position. By operating the manual turntable 2 and moving the movable nut 6 at the same time, the opening spring 17 to be installed can be assembled. After the assembly is completed, move the movable nut 6 to the other side to complete the assembly of the opening spring on the other side.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pole-mounted circuit breaker trip spring assembly tool, comprising: The slide bar (1) is characterized in that one end of the slide bar (1) is fixedly mounted on a left slide bar support (27), and the other end of the slide bar (1) is fixedly mounted on a right slide bar support (5); a slider (4) is movably mounted on the outer surface of the slide bar (1); a fixed nut (3) is fixedly mounted on one side of the interior of the slider (4); a lead screw (7) is movably mounted inside the fixed nut (3); a manual turntable (2) is fixedly mounted on one end of the lead screw (7); and a fixing component is provided on the slide bar (1) to help the entire device to perform a fixed support function.

2. The pole-mounted circuit breaker opening spring assembly tool according to claim 1, characterized in that: The fixing assembly comprises a left long support (25), wherein the left long support (25) is fixedly mounted on the bottom of the left sliding rod support (27), a front cross support (26) is fixedly mounted on one side of the left long support (25), one end of the front cross support (26) is fixedly mounted on the right long support (9), the right long support (9) is fixedly mounted on the bottom of the right sliding rod support (5), a rear cross support (11) is fixedly mounted on one side of the right long support (9), and one end of the rear cross support (11) is fixedly mounted on the left long support (25).

3. The pole-mounted circuit breaker opening spring assembly tool according to claim 2, characterized in that: A movable nut (6) is provided on the outer surface of the lead screw (7), a pin shaft (8) is provided between the two sides of the movable nut (6), a right clamping block (10) is provided on one side of the movable nut (6), a left clamping block (23) is provided on one side of the movable nut (6), and left and right clamping block fixing components (24) are provided between the movable nuts (6), and the right clamping block (10) and the left clamping block (23) are installed between the movable nuts (6) through the left and right clamping block fixing components (24).

4. The pole-mounted circuit breaker opening spring assembly tool according to claim 1, characterized in that: A right clamp support (12) is fixedly mounted on the top of the right long support (9), a right crank arm (13) is fixedly mounted on one side of the right clamp support (12), a right hand wheel shaft (15) is provided on an internal movable sleeve of the right crank arm (13), a right hand wheel (14) is fixedly mounted on one end of the right hand wheel shaft (15), and a right fixed block (16) is fixedly mounted on the other end of the right hand wheel shaft (15).

5. The pole-mounted circuit breaker opening spring assembly tool according to claim 4, characterized in that: A left clamp support (22) is fixedly mounted on the top of the left long support (25), a left crank arm (21) is fixedly mounted on one side of the left clamp support (22), a left hand wheel shaft (19) is provided on an internal movable sleeve of the left crank arm (21), a left hand wheel (20) is fixedly mounted on one end of the left hand wheel shaft (19), and a left fixed block (18) is fixedly mounted on the other end of the left hand wheel shaft (19).

6. The pole-mounted circuit breaker opening spring assembly tool according to claim 4, characterized in that: A connecting shaft (28) is provided at the bottom of the front side transverse support (26), and a brake opening spring (17) to be installed is provided at the top of the rear side transverse support (11).

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