GW type isolation knife linkage shaft fixing device

Abstract

The utility model relates to the technical field of isolation knife linkage shaft fixing device, and is a GW type isolation knife linkage shaft fixing device, which includes a linkage shaft, a handle, a connecting seat, a base and a cross bar for controlling the opening and closing of the isolation knife, the linkage shaft includes an upper short rod, a sleeve, and a lower short rod, the upper part of the upper short rod is installed together with the cross bar, the lower part of the upper short rod is located in the upper part of the sleeve and connected by a pin, the upper part of the lower short rod is located in the lower part of the sleeve and connected by a pin, the lower part of the lower short rod is fixedly installed together with the inner side of the upper part of the connecting seat, two mounting ears are provided on the connecting seat, the lower part of the handle is located between the two mounting ears and is rotatably connected by a pin. The utility model has a reasonable and compact structure and is easy to use. By connecting the upper short rod and the lower short rod to the sleeve by a connection method of a pin, the lower short rod can drive the sleeve to rotate together when the handle is turned, so as to avoid the problem of arcing caused by relative sliding that causes the isolation knife to open and close in place.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating knife linkage shaft fixing devices, in particular to a GW type isolating knife linkage shaft fixing device. Background Art

[0002] Conventional substations gradually age over time and exceed their service life. Hidden dangers in the equipment threaten the safety of substation operation. During the operation of the substation isolation knife, the short rod and the casing slip, resulting in inflexible operation of the isolation knife, which leads to signal failure during signal transmission and serious arcing during the process of pulling and closing the isolation knife. These problems seriously affect the safety of operators and the safe and stable operation of the power grid. Summary of the invention

[0003] The utility model provides a GW type isolating knife linkage shaft fixing device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the existing linkage shaft slips, resulting in inflexible operation of the isolating knife and potential safety hazards.

[0004] The technical solution of the utility model is achieved through the following measures: a GW type isolation knife linkage shaft fixing device, comprising a linkage shaft, a handle, a connecting seat, a base and a cross bar for controlling the opening and closing of the isolation knife, the linkage shaft comprising an upper short rod, a sleeve, and a lower short rod, the upper part of the upper short rod is installed together with the cross bar, the lower part of the upper short rod is located in the upper part of the sleeve and is connected through a pin shaft, the upper part of the lower short rod is located in the lower part of the sleeve and is connected through a pin shaft, the lower part of the lower short rod is fixedly installed with the inner side of the upper part of the connecting seat, two mounting ears are provided on the connecting seat, the lower part of the handle is located between the two mounting ears and is rotatably connected through a pin shaft, a support rod is rotatably connected in the lower part of the connecting seat, and the lower end of the support rod is installed on the base.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] Preferably, it also includes a limiting arc plate. A limiting arc plate is arranged on the upper side of the base along the rotation trajectory of the handle outside the support rod. The limiting arc plate is arc-shaped. Two limiting grooves that penetrate front and back are arranged on the limiting arc plate at intervals. The lower end of the handle is located in the limiting groove.

[0007] Preferably, a baffle is integrally provided on the inner side of the limiting arc plate at the outer side of each limiting groove.

[0008] Preferably, the connecting seat includes an upper mounting tube, a chassis, and a lower mounting tube that are integrally arranged from top to bottom. The chassis is circular, and notches are provided at intervals on the outer edge of the chassis. The lower part of the lower short rod is located in the upper mounting tube, and the upper part of the support rod is located in the lower mounting tube. Two mounting ears are integrally arranged with the chassis and the outer side of the upper mounting tube.

[0009] Preferably, a rib plate is integrally provided between the upper mounting cylinder and the chassis.

[0010] Preferably, the lower end of the handle is semicircular.

[0011] The utility model has a reasonable and compact structure and is easy to use. By connecting the upper short rod and the lower short rod to the sleeve through a pin connection method, the lower short rod can drive the sleeve to rotate when the handle is turned, thereby avoiding the problem of arcing caused by relative sliding due to the isolation knife not being able to open and close in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the main structure of an embodiment of the utility model.

[0013] Attached Figure 2 For attachment Figure 1 Schematic diagram of the top view structure of the limiting arc plate.

[0014] The codes in the accompanying drawings are: 1 is a handle, 2 is a base, 3 is a cross bar, 4 is an upper short bar, 5 is a sleeve, 6 is a lower short bar, 7 is a pin shaft, 8 is a mounting ear, 9 is a support rod, 10 is a limiting arc plate, 11 is a limiting groove, 12 is a baffle, 13 is an upper mounting tube, 14 is a chassis, 15 is a lower mounting tube, and 16 is a rib plate. DETAILED DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0016] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0017] The present invention is further described below in conjunction with the embodiments and drawings:

[0018] Embodiment 1: As attached Figure 1 , 2 As shown, the GW type isolation knife linkage shaft fixing device includes a linkage shaft, a handle 1, a connecting seat, a base 2 and a cross bar 3 for controlling the opening and closing of the isolation knife. The linkage shaft includes an upper short rod 4, a sleeve 5, and a lower short rod 6. The upper part of the upper short rod 4 is installed together with the cross bar 3, the lower part of the upper short rod 4 is located in the upper part of the sleeve 5 and is connected through a pin 7, the upper part of the lower short rod 6 is located in the lower part of the sleeve 5 and is connected through the pin 7, the lower part of the lower short rod 6 is fixedly installed with the inner side of the upper part of the connecting seat, two mounting ears 8 are provided on the connecting seat, the lower part of the handle 1 is located between the two mounting ears 8 and is rotatably connected through the pin 7, the lower part of the connecting seat is rotatably connected with a support rod 9, and the lower end of the support rod 9 is installed on the base 2.

[0019] The handle 1 is longitudinally installed in the mounting ear 8. When the GW type isolation knife needs to be opened and closed, the handle 1 is turned downward to a horizontal state, and then rotated around the support rod 9. The rotation of the handle 1 drives the connection seat to rotate, and the connection seat drives the lower short rod 6, the sleeve 5, and the upper short rod 4 to rotate, thereby driving the cross bar 3 to rotate to realize the opening and closing of the isolation knife. After the isolation knife is opened and closed, the handle 1 is erected upward. The utility model connects the upper short rod 4, the lower short rod 6 and the sleeve 5 through the pin 7, so that they can rotate together, avoiding the problem that the isolation knife is not flexible in operation and the opening and closing are not in place due to relative sliding, so that the signal is not in place and the arc phenomenon occurs in the transmission of the signal, which seriously poses a safety hazard.

[0020] According to actual needs, the above-mentioned GW type isolation knife linkage shaft fixing device can be further optimized and / or improved:

[0021] Embodiment 2: As attached Figure 1 , 2 As shown, a limiting arc plate 10 is also included. A limiting arc plate 10 is arranged on the upper side of the base 2 along the rotation track of the handle 1 outside the support rod 9. The limiting arc plate 10 is in an arc shape. Two limiting grooves 11 that penetrate front and back are arranged on the limiting arc plate 10 at intervals. The lower end of the handle 1 is located in the limiting groove 11. By setting the limiting groove 11, the position of the handle 1 after rotation can be limited, ensuring that the rotation distance is sufficient so that the isolation knife can be opened and closed in place.

[0022] Embodiment 3: As attached Figure 1 , 2 As shown, a baffle 12 is integrally provided inside the limiting arc plate 10 at the outer position of each limiting groove 11. By providing the baffle 12 to increase the contact area between the handle 1 and the limiting arc plate 10, it is possible to better prevent the handle 1 from rotating freely due to external factors after being erected, and better limit the position of the handle 1.

[0023] Embodiment 4: As attached Figure 1 As shown, the connecting seat includes an upper mounting tube 13, a chassis 14, and a lower mounting tube 15 which are integrally arranged from top to bottom. The chassis 14 is circular, and notches are arranged at intervals on the outer edge of the chassis 14. The lower part of the lower short rod 6 is located in the upper mounting tube 13, and the upper part of the support rod 9 is located in the lower mounting tube 15. Two mounting ears 8 are integrally arranged with the outer sides of the chassis 14 and the upper mounting tube 13.

[0024] By providing the upper mounting tube 13 and the lower mounting tube 15 , the upper short rod 4 and the supporting rod 9 can be located inside the upper mounting tube 13 and the lower mounting tube 15 , and are not easy to escape from the inside.

[0025] Embodiment 5: As attached Figure 1 As shown, a rib plate 16 is integrally provided between the upper mounting cylinder 13 and the chassis 14. The rib plate 16 is provided to increase the strength of the connecting seat.

[0026] Embodiment 6: As attached Figure 1As shown, the lower end of the handle 1 is semicircular. The semicircular lower end of the handle 1 allows the lower end of the handle 1 to be located in the limiting groove 11 for limiting when the handle 1 is in a vertical state, and the outer edge can avoid the base 2 when the handle 1 rotates, ensuring that the handle 1 is lowered smoothly.

[0027] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A GW type isolation knife linkage shaft fixing device, characterized in that It includes a linkage shaft, a handle, a connecting seat, a base and a cross bar for controlling the opening and closing of the isolation knife. The linkage shaft includes an upper short rod, a sleeve and a lower short rod. The upper part of the upper short rod is installed together with the cross bar, the lower part of the upper short rod is located in the upper part of the sleeve and is connected through a pin shaft, the upper part of the lower short rod is located in the lower part of the sleeve and is connected through a pin shaft, the lower part of the lower short rod is fixedly installed with the inner side of the upper part of the connecting seat, two mounting ears are provided on the connecting seat, the lower part of the handle is located between the two mounting ears and is rotatably connected through a pin shaft, a support rod is rotatably connected in the lower part of the connecting seat, and the lower end of the support rod is installed on the base.

2. The GW type isolation knife linkage shaft fixing device according to claim 1 is characterized in that It also includes a limiting arc plate. A limiting arc plate is arranged on the upper side of the base along the rotation trajectory of the handle outside the support rod. The limiting arc plate is arc-shaped. Two limiting grooves that pass through front and back are arranged on the limiting arc plate at intervals. The lower end of the handle is located in the limiting groove.

3. The GW type isolation knife linkage shaft fixing device according to claim 2 is characterized in that A baffle is integrally provided on the inner side of the limiting arc plate at the outer side of each limiting groove.

4. The GW type isolation knife linkage shaft fixing device according to claim 1, 2 or 3, characterized in that The connecting seat includes an upper mounting tube, a chassis, and a lower mounting tube which are integrally arranged from top to bottom. The chassis is circular, and notches are arranged at intervals on the outer edge of the chassis. The lower part of the lower short rod is located in the upper mounting tube, and the upper part of the support rod is located in the lower mounting tube. Two mounting ears are integrally arranged with the chassis and the outer side of the upper mounting tube.

5. The GW type isolation knife linkage shaft fixing device according to claim 4 is characterized in that A rib plate is integrally arranged between the upper mounting cylinder and the chassis.

6. The GW type isolation knife linkage shaft fixing device according to claim 1, 2, 3 or 5, characterized in that The lower end of the handle is semicircular.

7. The GW type isolation knife linkage shaft fixing device according to claim 4 is characterized in that The lower end of the handle is semicircular.

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