Three-phase crank arm capable of reducing shake

Abstract

The utility model relates to the field of circuit breaker equipment, and discloses a three-phase crank arm capable of reducing shake, which comprises a first connecting rod, two connecting pieces are fixedly arranged on the surface of the first connecting rod, two reinforcing sheets are fixedly arranged on the surface of the first connecting rod, two reinforcing rods are fixedly arranged on the opposite inner sides of the two reinforcing sheets, and the two reinforcing rods are fixedly arranged on the surface of the first connecting rod. Four reinforcing bolts are arranged on one side of one of the two reinforcing pieces in a threaded mode, and the other ends of the four reinforcing bolts are all sleeved with nuts in a threaded mode. According to the three-phase connecting lever, on the basis that reinforcing rods are used for reinforcing the connecting pieces originally, the reinforcing pieces are arranged on the opposite outer sides of the two connecting pieces, the four reinforcing bolts are arranged on the reinforcing pieces, and the other ends of the four reinforcing bolts are connected with the nuts in a sleeved mode, so that the two connecting pieces are connected more stably, and the overall stability of the three-phase connecting lever is improved; and meanwhile, the three-phase crank arm and the circuit breaker can be connected more tightly by using the sealing ring made of wear-resistant rubber, so that the possibility of shaking of the three-phase crank arm is reduced.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker equipment, in particular to a three-phase crank arm capable of reducing shaking. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. Circuit breakers are categorized as high-voltage and low-voltage based on their scope of use. The distinction between high and low voltage is somewhat ambiguous, with those above 3kV generally being considered high-voltage. The closing and opening operations of a circuit breaker are achieved through the contact and separation of a moving contact and a stationary contact, with the movement of the moving contact being driven by a three-phase lever arm.

[0003] Currently, most three-phase crank arms on the market rely solely on reinforcement rods to connect and reinforce the two connectors, resulting in low overall stability. Furthermore, the connection between the through-holes in the connectors and the circuit breaker is not reinforced with a sealing ring, which can cause the three-phase crank arm to wobble during use. Therefore, those skilled in the art have provided a three-phase crank arm that reduces wobble to address the issues raised in the background art. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a three-phase crank arm that can reduce shaking. On the basis of the original use of a reinforcing rod to reinforce the connecting piece, reinforcing plates are provided on the relatively outer sides of the two connecting pieces, and four reinforcing bolts are provided on the reinforcing plates. The other ends of the four reinforcing bolts are connected with nuts, so that the connection between the two connecting pieces is more stable, and the overall stability of the three-phase crank arm is improved. At the same time, a No. 1 sealing ring, a No. 2 sealing ring and a No. 3 sealing ring are provided inside the connecting piece. The sealing rings make the connection between the three-phase crank arm and the circuit breaker tighter, avoiding shaking of the three-phase crank arm. All sealing rings are made of wear-resistant rubber, which can greatly increase the service life of the three-phase crank arm.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a three-phase crank arm that can reduce shaking, including a No. 1 connecting rod, two connecting parts are fixedly provided on the surface of the No. 1 connecting rod, two reinforcing plates are fixedly provided on the surface of the No. 1 connecting rod, two reinforcing rods are fixedly provided on the inner sides of the two reinforcing plates, one side of one of the two reinforcing plates is threaded with four reinforcing bolts, and the other ends of the four reinforcing bolts are all threaded with nuts.

[0006] Furthermore, a No. 2 connecting rod is fixedly provided on one side of the No. 1 connecting rod, and a No. 3 connecting rod is fixedly provided on the other side of the No. 1 connecting rod, and screw holes are provided on the surface of the No. 3 connecting rod.

[0007] Furthermore, a No. 1 through hole is provided on the surface of the two connecting parts, a No. 3 sealing ring is movably provided inside the two connecting parts, and a No. 1 extrusion bolt is threadedly provided on one side of the two connecting parts.

[0008] Furthermore, a No. 2 through hole is opened on the surface of the two connecting parts, a No. 2 sealing ring is movably provided inside the two connecting parts, and a No. 2 extrusion bolt is threadedly provided on one side of the two connecting parts.

[0009] Furthermore, a No. 3 through hole is opened on the surface of the two connecting parts, and a No. 1 sealing ring is fixedly arranged inside the two connecting parts.

[0010] Furthermore, the connection between the No. 1 connecting rod and the No. 2 connecting rod and the No. 3 connecting rod is achieved by welding.

[0011] Furthermore, the third sealing ring is made of wear-resistant rubber.

[0012] Furthermore, the second sealing ring is made of wear-resistant rubber.

[0013] Furthermore, the No. 1 sealing ring is made of wear-resistant rubber.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model proposes a three-phase crank arm that can reduce shaking. On the basis of the original use of reinforcing rods to reinforce the connecting parts, reinforcing plates are provided on the relatively outer sides of the two connecting parts, and four reinforcing bolts are provided on the reinforcing plates. The other ends of the four reinforcing bolts are connected with nuts, so that the connection between the two connecting parts is more stable, thereby improving the overall stability of the three-phase crank arm.

[0016] 2. The utility model proposes a three-phase crank arm that can reduce shaking. A No. 1 sealing ring, a No. 2 sealing ring and a No. 3 sealing ring are arranged inside the connecting part. The sealing rings make the connection between the three-phase crank arm and the circuit breaker tighter, avoiding shaking of the three-phase crank arm. All sealing rings are made of wear-resistant rubber, which can greatly increase the service life of the three-phase crank arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the axial side of the utility model;

[0018] Figure 2 It is a side view schematic diagram of the utility model;

[0019] Figure 3 It is a top view schematic diagram of the utility model;

[0020] Figure 4 It is a side sectional schematic diagram of the utility model;

[0021] Figure 5 It is a top sectional schematic diagram of the present utility model.

[0022] Legend:

[0023] 1. Connecting rod No. 1; 2. Connecting piece; 3. Reinforcement bolt; 4. Through hole No. 1; 5. Extrusion bolt No. 1; 6. Connecting rod No. 2; 7. Extrusion bolt No. 2; 8. Through hole No. 2; 9. Reinforcement rod; 10. Through hole No. 3; 11. Reinforcement sheet; 12. Screw hole; 13. Connecting rod No. 3; 14. Sealing ring No. 1; 15. Sealing ring No. 2; 16. Sealing ring No. 3; 17. Nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-5 The utility model provides an embodiment: a three-phase crank arm capable of reducing shaking, comprising a No. 1 connecting rod 1, two connecting pieces 2 being fixedly provided on the surface of the No. 1 connecting rod 1, two reinforcing plates 11 being fixedly provided on the surface of the No. 1 connecting rod 1, two reinforcing rods 9 being fixedly provided on the inner sides of the two reinforcing plates 11, four reinforcing bolts 3 being threadedly provided on one side of one of the two reinforcing plates 11, and nuts 17 being threadedly provided on the other ends of the four reinforcing bolts 3;

[0026] Specifically, two connecting parts 2 are connected by connecting rod No. 1, and reinforcing plates 11 are set on the relatively outer sides of the two connecting parts 2. Two reinforcing rods 9 are used between the reinforcing plates 11 to preliminarily reinforce the three-phase crank arm, and then four reinforcing bolts 3 are used to connect between the two reinforcing plates 11, and the reinforcing bolts 3 are fixed by nuts 17 to further reinforce the three-phase crank arm, thereby greatly increasing the stability of the three-phase crank arm.

[0027] A second connecting rod 6 is fixedly provided on one side of the first connecting rod 1, and a third connecting rod 13 is fixedly provided on the other side of the first connecting rod 1. A screw hole 12 is provided on the surface of the third connecting rod 13.

[0028] Specifically, by connecting the No. 2 connecting rod 6 and the No. 3 connecting rod 13 on both sides of the No. 1 connecting rod 1, the three-phase crank arm can be more tightly connected to the circuit breaker.

[0029] The surfaces of the two connecting pieces 2 are each provided with a No. 1 through hole 4, the interiors of the two connecting pieces 2 are each movably provided with a No. 3 sealing ring 16, and one side of the two connecting pieces 2 is threadedly provided with a No. 1 extrusion bolt 5;

[0030] Specifically, by adding the No. 3 sealing ring 16, the friction at the connection between the three-phase crank arm and the circuit breaker through the No. 1 through hole 4 can be increased, and the possibility of the three-phase crank arm shaking can be reduced. At the same time, tightening the No. 1 extrusion bolt 5 can make the No. 3 sealing ring 16 in closer contact with the circuit breaker, which is more conducive to the function of the No. 3 sealing ring 16.

[0031] A second through hole 8 is provided on the surface of the two connecting pieces 2, a second sealing ring 15 is movably provided inside the two connecting pieces 2, and a second extrusion bolt 7 is threadedly provided on one side of the two connecting pieces 2;

[0032] Specifically, by adding the No. 2 sealing ring 15, the friction at the connection between the three-phase crank arm and the circuit breaker through the No. 2 through hole 8 can be increased, and the possibility of the three-phase crank arm shaking can be reduced. At the same time, tightening the No. 2 extrusion bolt 7 can make the No. 2 sealing ring 15 in closer contact with the circuit breaker, which is more conducive to the function of the No. 2 sealing ring 15.

[0033] A third through hole 10 is formed on the surface of the two connecting pieces 2, and a first sealing ring 14 is fixedly provided inside the two connecting pieces 2;

[0034] Specifically, by adding the No. 1 sealing ring 14, the friction between the three-phase crank arm and the circuit breaker at the connection portion through the No. 3 through hole 10 can be increased, thereby reducing the possibility of the three-phase crank arm shaking.

[0035] The connection between the No. 1 connecting rod 1 and the No. 2 connecting rod 6 and the No. 3 connecting rod 13 is welding;

[0036] Specifically, by connecting the No. 1 connecting rod 1, the No. 2 connecting rod 6 and the No. 3 connecting rod 13 by welding, the stability of the three-phase crank arm can be increased.

[0037] The third sealing ring 16 is made of wear-resistant rubber, the second sealing ring 15 is made of wear-resistant rubber, and the first sealing ring 14 is made of wear-resistant rubber;

[0038] Specifically, the No. 1 sealing ring 14 , the No. 2 sealing ring 15 and the No. 3 sealing ring 16 are all made of wear-resistant rubber, which can increase the friction coefficient of the sealing rings and increase the service life of the sealing rings.

[0039] Working principle: Use the reinforcement rod 9 to preliminarily reinforce the connector 2, then set the reinforcement plate 11 on the opposite outer sides of the two connectors 2, set four reinforcement bolts 3 on the reinforcement plate 11, and the other ends of the four reinforcement bolts 3 are connected with nuts 17, so that the connection between the two connectors 2 is more stable, and the overall stability of the three-phase crank arm is improved;

[0040] Secondly, a No. 1 sealing ring 14, a No. 2 sealing ring 15 and a No. 3 sealing ring 16 are arranged inside the connector 2. The sealing rings make the connection between the three-phase crank arm and the circuit breaker tighter, preventing the three-phase crank arm from shaking. All sealing rings are made of wear-resistant rubber, which can greatly increase the service life of the three-phase crank arm.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-phase crank arm capable of reducing shaking, comprising a first connecting rod (1), characterized in that: Two connecting pieces (2) are fixedly provided on the surface of the No. 1 connecting rod (1), two reinforcing plates (11) are fixedly provided on the surface of the No. 1 connecting rod (1), two reinforcing rods (9) are fixedly provided on the inner sides of the two reinforcing plates (11), four reinforcing bolts (3) are threadedly provided on one side of one of the two reinforcing plates (11), and nuts (17) are threadedly sleeved on the other ends of the four reinforcing bolts (3).

2. The three-phase crank arm capable of reducing shaking according to claim 1, characterized in that: A second connecting rod (6) is fixedly provided on one side of the first connecting rod (1), and a third connecting rod (13) is fixedly provided on the other side of the first connecting rod (1), wherein a screw hole (12) is provided on the surface of the third connecting rod (13).

3. The three-phase crank arm capable of reducing shaking according to claim 1, characterized in that: A No. 1 through hole (4) is provided on the surface of the two connecting pieces (2), a No. 3 sealing ring (16) is movably provided inside the two connecting pieces (2), and a No. 1 extrusion bolt (5) is threadedly provided on one side of the two connecting pieces (2).

4. The three-phase crank arm capable of reducing shaking according to claim 1, characterized in that: A No. 2 through hole (8) is provided on the surface of the two connecting pieces (2), a No. 2 sealing ring (15) is movably provided inside the two connecting pieces (2), and a No. 2 extrusion bolt (7) is threadedly provided on one side of the two connecting pieces (2).

5. The three-phase crank arm capable of reducing shaking according to claim 1, characterized in that: A No. 3 through hole (10) is provided on the surface of the two connecting pieces (2), and a No. 1 sealing ring (14) is fixedly provided inside the two connecting pieces (2).

6. The three-phase crank arm capable of reducing shaking according to claim 1, characterized in that: The connection between the No. 1 connecting rod (1), the No. 2 connecting rod (6), and the No. 3 connecting rod (13) is achieved by welding.

7. The three-phase crank arm capable of reducing shaking according to claim 3, characterized in that: The third sealing ring (16) is made of wear-resistant rubber.

8. The three-phase crank arm capable of reducing shaking according to claim 4, characterized in that: The second sealing ring (15) is made of wear-resistant rubber.

9. The three-phase crank arm capable of reducing shaking according to claim 5, characterized in that: The first sealing ring (14) is made of wear-resistant rubber.

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