Plum blossom contact assembling and disassembling tool

Abstract

The utility model relates to the technical field of switch cabinets, in particular to a plum blossom contact assembling and disassembling tool which comprises a base, a plurality of inner supporting units arranged on the base at intervals in the circumferential direction and a screw assembly used for driving the inner supporting units to move. Each inner supporting unit comprises a telescopic rod connected to the base in a radial telescopic movable mode and an ejection sliding block fixedly arranged at the outer end of the telescopic rod, and the screw assembly comprises a stroke rod connected to the base in a threaded mode and a conical body fixedly arranged at the bottom of the stroke rod. The inner end of the telescopic rod is in contact with the conical body; in the spiral rotation process of the stroke rod, the conical body can push the telescopic rod to stretch out in the radial direction, and therefore the sliding block is ejected out to expand the tulip contact in an inner support mode. According to the plum blossom contact assembling and disassembling tool, the assembling and disassembling efficiency of the plum blossom contact can be improved, and the assembling quality of the plum blossom contact is improved.

Description

Technical Field

[0001] The present application relates to the technical field of switch cabinets, and in particular to a plum blossom contact loading and unloading tool. Background Art

[0002] The plum blossom contact is a crucial component in the electrical connection between a circuit breaker or trolley and a switchgear cabinet. Stable and reliable contact between the stationary contact and the plum blossom contact is essential. As the rated current increases, the clamping force of the plum blossom contact also increases. Before the plum blossom contact is installed on the stationary contact, the inner diameter of the plum blossom contact must be stretched a certain distance.

[0003] The traditional installation method involves first withdrawing the contact spring, then fitting the contact onto a tapered fixture and pushing the contact firmly against the stationary contact. This approach: 1. Retracting the spring can cause changes in spring elasticity, affecting the clamping force and contact stability of the contact. 2. Undue friction between the contact and the fixture can easily cause surface wear, adversely affecting electrical conductivity and other functions. 3. It can also be inconvenient. Summary of the Invention

[0004] In view of this, the present application provides a plum blossom contact assembly and disassembly tool, which can improve the disassembly and assembly efficiency of the plum blossom contact and increase the assembly quality of the plum blossom contact.

[0005] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A plum blossom contact loading and unloading tool, characterized in that it includes a base, a plurality of internal support units arranged on the base at circumferential intervals, and a screw assembly for driving the internal support units to move; the internal support units each include a telescopic rod connected to the base in a radially telescopic manner, and an ejection slider fixedly arranged at the outer end of the telescopic rod, and the screw assembly includes a travel rod threadedly connected to the base and a conical body fixedly arranged at the bottom of the travel rod; the inner end of the telescopic rod touches the conical body; during the spiral rotation of the travel rod, the conical body can push the telescopic rod to extend radially, thereby ejecting the slider to expand the plum blossom contact in an internal support manner.

[0007] The above-mentioned application is a plum blossom contact loading and unloading tool, which uses a travel rod to push the ejection slider outward to expand the inner diameter of the plum blossom contact, and then installs the plum blossom contact on the static contact. This is not only simple to operate, but also can ensure the clamping force and contact stability of the plum blossom contact.

[0008] In some embodiments, the inner support unit further includes a telescopic sleeve and a spring. The telescopic sleeve is fixedly connected to the base, and the telescopic rod is movably connected within the telescopic sleeve. A ball head is fixedly provided at the inner end of the telescopic rod. The spring is sleeved on the telescopic rod, with its ends respectively pressing against the interior of the telescopic sleeve and the ball head. The spring provides radial return.

[0009] In some embodiments, the base is provided with a first groove for the telescopic movement of the ejection slider, and the telescopic sleeve is installed in the first groove, wherein the first groove can limit the displacement of the ejection slider.

[0010] In some embodiments, the screw assembly further comprises a screw sleeve fixedly mounted on the base, the travel rod is threadedly connected to the screw sleeve, and a knob is fixedly mounted on the top of the travel rod. The knob is added to facilitate manual force application.

[0011] In some embodiments, the base is a cylindrical structure, and the travel rod is coaxially arranged with the base, mainly to ensure that the telescopic rods can move synchronously, thereby evenly expanding the inner diameter of the plum blossom contact.

[0012] In some embodiments, a circular plug that can cooperate with the static contact is fixedly provided on the bottom of the base. The circular plug can cooperate with the internal circular hole of the static contact to ensure that the plum blossom contact can be accurately installed in place.

[0013] In some embodiments, the number of the internal support units is three or more.

[0014] In some embodiments, the outer surface of the ejection slider is a curved surface.

[0015] It can be seen from the above technical solution that this application has at least the following advantages and positive effects:

[0016] The present application provides a plum blossom contact loading and unloading tool, which is simple to operate. The slider is pushed outward by a screw drive to expand the inner diameter of the plum blossom contact, and then the plum blossom contact is installed on the static contact, which also ensures the clamping force and contact stability of the plum blossom contact.

[0017] 2. The tooling uses internal support to open the plum blossom contacts. There is no improper friction between the tooling and the plum blossom contacts, reducing the chance of surface wear of the plum blossom contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0019] Figure 2 This is an exploded view of an embodiment of the present application;

[0020] Figure 3 A cross-sectional view of an embodiment of the present application;

[0021] Figure 4 The usage status of the embodiment of this application Figure 1 ;

[0022] Figure 5 The usage status of the embodiment of this application Figure 2 .

[0023] Explanation of the reference numbers: 1. Base; 11. First groove; 12. Round plug; 2. Internal support unit; 21. Telescopic rod; 22. Ejector slider; 23. Telescopic sleeve; 24. Spring; 25. Ball head; 3. Screw assembly; 31. Travel rod; 32. Conical body; 33. Screw sleeve; 34. Knob; 4. Plum blossom contact; 5. Static contact. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings. The terms used in the implementation methods of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0025] See Figures 1 to 5 The embodiment of the present application provides a plum blossom contact loading and unloading tool, including a base 1, a plurality of internal support units 2 circumferentially spaced on the base 1, and a screw assembly 3 for driving the internal support unit 2 to move; the internal support unit 2 includes a telescopic rod 21 connected to the base 1 in a radially telescopic manner, and an ejection slider 22 fixedly arranged at the outer end of the telescopic rod 21, and the screw assembly 3 includes a travel rod 31 threadedly connected to the base 1 and a conical body 32 fixedly arranged at the bottom of the travel rod 31; the inner end of the telescopic rod 21 touches the conical body 32; during the spiral rotation of the travel rod 31, the conical body 32 can push the telescopic rod 21 to extend radially, thereby ejecting the slider 22 to expand the plum blossom contact 4 in an internal supporting manner.

[0026] The plum blossom contact 4 loading and unloading tool drives the ejection slider 22 outward through the travel rod to expand the inner diameter of the plum blossom contact 4, and then the plum blossom contact 4 is installed on the static contact 5. This is not only simple to operate, but also can ensure the clamping force and contact stability of the plum blossom contact 4.

[0027] The inner support unit 2 also includes a telescopic sleeve 23 and a spring 24. The telescopic sleeve 23 is fixedly connected to the base 1. The telescopic rod 21 is movably connected to the telescopic sleeve 23. The inner end of the telescopic rod 21 is fixedly provided with a ball head 25. The spring 24 is sleeved on the telescopic rod 21, and its two ends respectively press against the interior of the telescopic sleeve and the ball head 25. The spring 24 serves to radially reset the telescopic rod.

[0028] The base 1 is provided with a first groove 11 for the telescopic movement of the ejection slider 22, and the telescopic sleeve 23 is installed in the first groove 11. The first groove 11 can limit the displacement of the ejection slider 22.

[0029] The screw assembly 3 further comprises a screw sleeve 33 fixedly mounted on the base 1, the travel rod 31 is threadedly connected to the screw sleeve 33, and a knob 34 is fixedly mounted on the top of the travel rod 31. The knob 34 is added to facilitate manual force application.

[0030] The base 1 is a cylindrical structure, and the travel rod 31 is coaxially arranged with the base 1. This is mainly to ensure that the telescopic rods 21 can move synchronously, thereby evenly expanding the inner diameter of the plum blossom contact 4.

[0031] The bottom of the base 1 is also fixedly provided with a circular plug 12 that can cooperate with the static contact 5. This circular plug 12 can cooperate with the inner circular hole of the static contact 5 to position, ensuring that the plum blossom contact 4 can be accurately installed in place.

[0032] The number of the inner supporting units 2 is three or more.

[0033] The outer surface of the ejection slider 22 is an arc-shaped surface.

[0034] The following briefly describes the working process and usage of a plum blossom contact assembly and disassembly tool in the above embodiment:

[0035] See also Figure 4 and Figure 5 To install the plum blossom contact 4, turn the knob 34, causing the travel rod 31 to move downward. The tapered portion 32 at the bottom of the travel rod 31 contacts the ball head 25 of the telescopic rod 21, causing the telescopic rod 21 to move outward. This pushes the ejector slider 22 outward, opening the plum blossom contact 4. Align the base 1 with the stationary contact 5, and turn the knob 34 in the opposite direction. The plum blossom contact 4 contacts the stationary contact 5 and secures it, completing the installation of the plum blossom contact 4. Reverse the above steps to remove the plum blossom contact 4, completing disassembly.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A plum blossom contact loading and unloading tool, characterized by: It includes a base, a plurality of inner support units arranged on the base at circumferential intervals, and a screw assembly for driving the inner support units to move; the inner support units each include a telescopic rod connected to the base in a radially telescopic manner, and an ejection slider fixedly arranged at the outer end of the telescopic rod; the screw assembly includes a travel rod threadedly connected to the base and a conical body fixedly arranged at the bottom of the travel rod; the inner end of the telescopic rod touches the conical body; during the spiral rotation of the travel rod, the conical body can push the telescopic rod to extend radially, thereby ejecting the slider to expand the plum blossom contact in an inner support manner.

2. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: The inner support unit also includes a telescopic sleeve and a spring. The telescopic sleeve is fixedly connected to the base. The telescopic rod is telescopically connected in the telescopic sleeve. A ball head is fixedly provided at the inner end of the telescopic rod. The spring is sleeved on the telescopic rod and its two ends respectively press against the inside of the telescopic sleeve and the ball head.

3. The plum blossom contact assembly and disassembly tool according to claim 2, characterized in that: The base is provided with a first groove for ejecting the sliding block to move telescopically, and the telescopic sleeve is installed in the first groove.

4. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: The screw assembly further comprises a screw sleeve fixedly mounted on the base, the travel rod is threadedly connected to the screw sleeve, and a knob is further fixedly mounted on the top of the travel rod.

5. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: The base is a cylindrical structure, and the travel rod is coaxially arranged with the base.

6. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: A circular plug that can match with the static contact is also fixedly arranged on the bottom of the base.

7. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: The number of the inner support units is three or more.

8. The plum blossom contact assembly and disassembly tool according to claim 1, characterized in that: The outer surface of the ejection slider is a curved surface.

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