A moving contact seat mounting tool

Abstract

The utility model belongs to circuit breaker production technology technical field, concretely relates to a kind of movable contact seat installation tool, including the bottom plate fixed in the mesa by bolt, the bottom plate is equipped with several threaded holes, column is installed in the threaded hole, movable contact seat cylinder bottom installs bottom disc, the bottom disc is provided with several annular grooves along movable contact seat cylinder central axis, movable contact seat cylinder is inserted in the column outside by annular groove, does not need artificial fixed circuit breaker, saves manpower.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker manufacturing technology, and in particular relates to a moving contact seat installation tool. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] In the production and assembly of power equipment, high and low voltage switchgear and other products, the moving contact is a key conductive connection component. Its installation firmness and reliability are of paramount importance, directly affecting the electrical performance and safe operation of the entire product.

[0004] Currently, the industry still commonly uses traditional manual operation methods for assembling moving contact seats. The specific process is as follows: The assembly worker needs to hold an "F wrench" or similar self-made tool in their left hand, manually insert it into a specific part of the moving contact seat (such as a guide groove or force point), and rely on the strength of their arm and body to apply torque in the opposite direction to overcome the reverse force generated when tightening the bolts, thereby fixing the moving contact seat and preventing it from rotating or shifting. Under this premise, the worker then uses a torque wrench in their right hand to tighten the connecting bolts to ensure that the bolts reach the preset torque value.

[0005] However, this traditional assembly method has the following problems: High labor intensity and easy fatigue: The entire fixing process relies entirely on the worker's physical strength to resist the strong reaction force. Especially in mass production or in situations where high-torque bolts need to be tightened, the operator's physical strength is greatly consumed, and fatigue is very easy to occur, affecting work comfort and also resulting in high labor costs. Utility Model Content

[0006] In order to solve the above problems, this utility model proposes a moving contact seat mounting fixture. The technical problem to be solved by this utility model is...

[0007] According to some embodiments, the present invention adopts the following technical solution: A movable contact seat mounting fixture includes a base plate fixed to a table by bolts, the base plate having a plurality of threaded holes, a column installed in the threaded holes, a base plate installed at the bottom of the movable contact seat cylinder, the base plate having a plurality of annular grooves along the central axis of the movable contact seat cylinder, and the movable contact seat cylinder being inserted into the column through the annular grooves.

[0008] A further feature is that a pad is provided above the base plate, and a circular hole is opened on the pad corresponding to the column. The pad can buffer and protect the bottom of the moving contact sleeve, preventing it from directly contacting the base plate during installation and causing wear or damage. The circular hole and the column further enhance the stability and centering performance of the overall structure.

[0009] A further configuration is that circular grooves are formed at both ends of the annular groove, and the column is installed through the circular groove. The circular groove structure facilitates the quick insertion and centering of the column, reducing assembly preparation time.

[0010] Further configured, the base plate includes a first base plate and a second base plate, which are stacked together. The double-layer base plate structure enhances the overall rigidity and stability, making it suitable for fastening scenarios with higher torque.

[0011] Further, the first and second base plates are provided with threaded holes corresponding to the columns, and the second base plate is provided with a receiving groove. The threaded hole design makes the column installation more secure and prevents loosening during use; the receiving groove serves to store bolts; and ensures that the tooling base plate and the table surface remain flat after being fixed with bolts, which facilitates the subsequent installation of the pad plate.

[0012] Further, the bottom surface of the first base plate and the side plate are chamfered, and the top surface of the second base plate and the side plate are chamfered, which facilitates welding of the first base plate and the second base plate after stacking and makes it more secure; after welding, it is polished to ensure that the side of the base plate is flat and smooth after welding; it is both aesthetically pleasing and prevents the side welding protrusions from scratching the parts.

[0013] A further feature is that a square strip is provided at the top of the column. The square strip structure facilitates the installation and fastening of the column using tools such as wrenches, thereby improving assembly efficiency.

[0014] A further feature is that the bottom end of the column is provided with a threaded post. The threaded post design makes the connection between the column and the base plate simpler and more reliable, and facilitates disassembly and replacement.

[0015] Furthermore, the pad is made of a flexible material, which can effectively absorb the vibration and impact generated during the tightening process and protect the surface of the moving contact sleeve from pressure damage.

[0016] A further configuration is that the thickness of the pad is greater than the thickness of the base plate. The thicker pad provides better cushioning and protection, and is especially suitable for heavy-duty or high-precision moving contact assembly scenarios.

[0017] The beneficial effects of this utility model are as follows: After being fixed by the fixture, it is not necessary to use an "F wrench" with the left hand for manual fixing. The bolt installation can be completed by tightening the bolts with the right hand, saving manpower. Specifically, the table is pre-drilled with holes. Fixing bolts are selected to position the fixture body on the table through the through holes on the base plate IV. Then, the three columns are screwed into the corresponding column screw holes with screws. Then, the pad corresponding to the column is covered on the base plate. The annular groove of the moving contact sleeve is fitted onto the column. When the bolts are tightened, the rotational force received by the moving contact sleeve is restricted to the column. There is no need to fix the moving contact sleeve during rotation. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the structure of the moving contact base of this utility model; Figure 4 This is a schematic diagram of the installation structure of the column and the moving contact base of this utility model.

[0020] Figure label: 1. Tabletop; 2. Base plate; 21. First base plate; 22. Second base plate; 3. Threaded hole; 4. Post; 5. Moving contact sleeve; 6. Chassis; 7. Annular groove; 8. Pad; 9. Round hole; 10. Round groove; 11. Receiving groove; 12. Chamfer; 13. Square strip; 14. Threaded post; 15. Bolt. Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Example 1 A moving contact mounting fixture, referring to Figure 1 and Figure 2 A movable contact seat mounting fixture includes a base plate 2 fixed to a platform 1 by bolts 15. The base plate 2 has several threaded holes 3, and columns 4 are installed within these threaded holes 3. A base plate 6 is installed at the bottom of a movable contact seat cylinder 5. The base plate 6 has several annular grooves 7 along the central axis of the movable contact seat cylinder 5. The movable contact seat cylinder 5 is inserted into the columns 4 through these annular grooves 7. The threaded connection between the columns 4 and the base plate 2 not only provides vertical support but, more importantly, creates a torque-resistant fulcrum. (Refer to...) Figure 3 and Figure 4 The moving contact sleeve 5, through the insertion and engagement of the annular groove 7 with the column 4, achieves precise constraint of circumferential freedom, completely eliminating the rotational displacement generated when tightening bolts. This design transmits the reaction force that originally required manual resistance to the worktable 1 through the tooling structure, allowing the operator to complete the assembly with just one hand holding a torque wrench, greatly reducing labor intensity and improving assembly efficiency.

[0023] A pad 8 is installed above the base plate 2, and a round hole 9 is opened on the pad 8 corresponding to the column 4. The pad 8 can buffer and protect the bottom of the moving contact sleeve 5, preventing it from directly contacting the base plate 2 during installation and causing wear or damage; the round hole 9 and the column 4 further enhance the stability and centering performance of the overall structure, which helps to improve the assembly accuracy.

[0024] The annular groove 7 has circular grooves 10 at both ends, and the column 4 is installed through the circular grooves 10. The structure of the circular grooves 10 facilitates the quick insertion and centering of the column 4, reducing assembly preparation time; at the same time, the cooperation between the circular grooves 10 and the column 4 enhances the torsional resistance, effectively disperses the circumferential stress generated when tightening the bolts, and improves the durability and reliability of the tooling.

[0025] The base plate 2 includes a first base plate 21 and a second base plate 22, which are stacked together. The double-layer base plate structure enhances the overall rigidity and stability, making it suitable for fastening scenarios with higher torque; the design of stacking two plates facilitates processing; and it reduces the overall cost of tooling.

[0026] The first base plate 21 and the second base plate 22 have threaded holes 3 corresponding to the columns 4. The second base plate 22 has a receiving groove 11, which serves to hold the bolts. This ensures that the tooling base plate remains flat after being fixed to the table with bolts, facilitating the subsequent installation of the backing plate. The three columns 4 are fixed by M12 threads on their bodies engaging with M12 threaded holes on the base plate 2. They can be tightened with an adjustable wrench using the "square strip 13" on the column 4 body.

[0027] The fixture body is positioned on the table 1 through the through hole on the base plate 2. The table 1 is pre-drilled during installation. M10 standard bolts are selected. The 12mm through hole on the base plate 2 can pass through the screw rod, and the 25mm receiving groove 11 can accommodate the nut, which plays the role of "counterhead". That is, there is no protrusion on the base plate 2 after the bolt is tightened, which facilitates the installation of the pad plate 8.

[0028] The bottom surface of the first base plate 21 and the side plate are chamfered with a chamfer 12, and the top surface of the second base plate 22 and the side plate are chamfered with a chamfer 12. The chamfer 12 design facilitates welding of the first base plate 21 and the second base plate 22 after stacking and makes them more secure; after welding, they are ground to ensure that the sides of the base plates are flat and smooth after welding; this is both aesthetically pleasing and prevents the welded protrusions on the sides from scratching the parts.

[0029] A square strip 13 is provided at the top of the column 4. An adjustable wrench can be attached to the square strip 13 and the threaded post 14 at the bottom of the column 4 can be screwed into the corresponding threaded hole 3 by rotating the wrench. At the same time, the square strip 13 also serves as a visual marker, making it easy to quickly identify the correct installation direction of the column 4 and avoid assembly errors.

[0030] The bottom of the column 4 is equipped with a threaded post 14. In actual use, this design makes the replacement of the column 4 very simple. When the threads wear out, only the column 4 needs to be replaced without affecting the base plate 2, which greatly reduces maintenance costs and service life expenses.

[0031] The pad 8 is made of flexible material. The base plate 2 and the column 4 are made of stainless steel, which is aesthetically pleasing, wear-resistant, and rust-proof, extending their service life. The pad 8 is made of nylon to avoid metal-to-metal contact between the moving contact sleeve 5 and the base plate 2, preventing scratches.

[0032] The thickness of the pad 8 is greater than that of the base plate 2. The thickness of the pad 8 is designed to be 1.5 times that of the base plate 2. The thicker pad 8 provides sufficient deformation space to fully compensate for the unevenness error between the base plate 2 and the worktable surface 1, ensuring that the moving contact cylinder 5 is subjected to uniform force. The edges of the pad 8 are rounded to avoid stress concentration.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0034] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A moving contact seat mounting fixture, characterized in that, The device includes a base plate that is fixed to the tabletop by bolts. The base plate has several threaded holes, in which columns are installed. A chassis is installed at the bottom of the movable contact sleeve. The chassis has several annular grooves along the central axis of the movable contact sleeve. The movable contact sleeve is inserted into the column through the annular grooves.

2. The moving contact seat mounting fixture as described in claim 1, characterized in that, A pad is installed above the base plate, and a round hole is made in the pad corresponding to the column.

3. The moving contact seat mounting fixture as described in claim 1, characterized in that, The annular groove has circular grooves at both ends, and the column is installed through the circular groove.

4. The moving contact seat mounting fixture as described in claim 1, characterized in that, The base plate includes a first base plate and a second base plate, which are stacked together.

5. The moving contact seat mounting fixture as described in claim 4, characterized in that, The first base plate and the second base plate have threaded holes for the corresponding columns, and the second base plate has a receiving groove.

6. The moving contact seat mounting fixture as described in claim 4, characterized in that, The bottom surface of the first base plate is chamfered and the side plate is chamfered, and the top surface of the second base plate is chamfered and the side plate is chamfered.

7. The moving contact seat mounting fixture as described in claim 1, characterized in that, A square strip is provided at the top of the column.

8. The moving contact seat mounting fixture as described in claim 1, characterized in that, The bottom end of the column is provided with a threaded post.

9. The moving contact seat mounting fixture as described in claim 2, characterized in that, The pad is made of a flexible material.

10. The moving contact seat mounting fixture as described in claim 2, characterized in that, The thickness of the pad is greater than the thickness of the base plate.

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