Insulating main shaft

Abstract

The utility model discloses an insulating main shaft which comprises a main shaft body, two ends of the main shaft body are respectively and fixedly connected with a supporting block and a spline plate, a coupler is arranged in the spline plate and comprises a spline tooth section matched with the spline plate, and the front end of the spline tooth section is fixedly connected with an installation block. A groove is formed in the back face of the mounting block, a sliding hole penetrating through the surface of the mounting block is formed in the inner wall of the groove, a locking rod is slidably connected to the inner wall of the sliding hole, and a locking hole matched with the locking rod is formed in the inner wall of the spline plate. The limiting block is pulled forwards through the catching groove, then the push rod is driven to move, the push rod is separated from the two locking rods, then the first spring is reset, the first spring pushes the two fixing pieces to be close to each other, the fixing pieces drive the locking rods to move, then the locking rods are separated from the locking holes, and the coupler and the spline plate are conveniently disassembled; therefore, the problems of unstable connection and inconvenient operation in the prior art are solved.

Description

Technical Field

[0001] The present application relates to the technical field of insulating spindles, and in particular to an insulating spindle. Background Art

[0002] The main high-voltage switchgear in the environmental protection cabinet is the load switch and the load switch and fuse combination device. In the load switch and the combination device, the operating mechanism drives the insulated main shaft of the load switch to rotate through the output shaft to realize the opening, closing and grounding operations of the load switch and the combination device.

[0003] After searching, the Chinese patent with the authorization number CN 203826274 U discloses a load switch and an insulating main shaft thereof, which can greatly reduce the radial dimension of the shaft body and the shaft body material, thereby reducing the overall material of the insulating main shaft and reducing the production cost of the insulating main shaft. However, after the key tooth segment of the device is connected with the spline, the two are easy to slide or shake in the longitudinal direction. Although the prior art also uses bolts or welding to fix the two, this method is relatively inconvenient to operate. Therefore, an insulating main shaft is proposed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide an insulating main shaft to solve the problems raised in the above background technology.

[0005] The present application embodiment adopts the following technical solutions:

[0006] An insulating spindle comprises a spindle body, wherein two ends of the spindle body are respectively fixedly connected with a support block and a spline keypad, a coupling is arranged inside the spline keypad, the coupling comprises a key tooth segment cooperating with the spline keypad, a mounting block is fixedly connected to the front end of the key tooth segment, a groove is provided on the back side of the mounting block, and a sliding hole penetrating the surface of the mounting block is provided on the inner wall of the groove, a locking rod is slidably connected to the inner wall of the sliding hole, and a locking hole cooperating with the locking rod is provided on the inner wall of the spline keypad.

[0007] Preferably, a fixing plate is provided inside the groove, and the fixing plate is fixedly connected to one end of a locking rod. A first spring is sleeved on the surface of the locking rod, and one end of the first spring is fixedly connected to the inner wall of the groove, and the other end of the first spring is fixedly connected to the fixing plate.

[0008] Preferably, a through hole is provided on the inner wall of the groove, and a push rod is slidably connected to the inner wall of the through hole, one end of the push rod is provided with a chamfer, and the other end of the push rod is fixedly connected to a limiting block, and a buckle groove is provided on the surface of the limiting block.

[0009] Preferably, a connecting rod is fixedly connected to the front end of the mounting block, and a convex portion cooperating with the output shaft of the operating mechanism is fixedly connected to the front end of the connecting rod.

[0010] Preferably, a receiving groove for receiving the push rod is provided on the surface of the connecting rod, a second spring is fixedly connected to the inner wall of the receiving groove, and one end of the second spring is fixedly connected to the limit block.

[0011] Preferably, three groups of contact piece mounting arms are fixedly connected to the surface of the main shaft body, and reinforcing ribs are fixedly connected to the surface of the contact piece mounting arms.

[0012] Preferably, a plurality of ribs are arranged on the surface of the main shaft body, and the main shaft body is made of reinforced flame-retardant nylon material.

[0013] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0014] In the utility model, the limit block is pulled toward the front side by the buckle groove, thereby driving the push rod to move, so that the push rod is disengaged from the two locking rods, thereby resetting the first spring, and the first spring pushes the two fixing plates closer to each other, and the fixing plates drive the locking rod to move, thereby disengaging the locking rod from the locking hole, making it convenient to disassemble the coupling and the spline key, thereby solving the problems of unstable connection and inconvenient operation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 : A three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 The following is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 : A schematic diagram of the side section structure of the coupling of the utility model.

[0019] In the figure: 1, main shaft body; 2, support block; 3, flower key; 4, coupling; 401, key tooth segment; 402, mounting block; 403, connecting rod; 404, convex portion; 5, locking rod; 6, fixing plate; 7, first spring; 8, push rod; 9, limit block; 10, buckle groove; 11, receiving groove; 12, second spring; 13, contact piece mounting arm; 14, reinforcing rib; 15, rib line. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0021] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0022] See also Figure 1-3 , the utility model provides a technical solution for an insulating spindle:

[0023] An insulating main shaft comprises a main shaft body 1, wherein two ends of the main shaft body 1 are respectively fixedly connected with a support block 2 and a spline keypad 3, a coupling 4 is arranged inside the spline keypad 3, the coupling 4 comprises a key tooth segment 401 cooperating with the spline keypad 3, a mounting block 402 is fixedly connected to the front end of the key tooth segment 401, a groove is provided on the back side of the mounting block 402, and a sliding hole penetrating the surface of the mounting block 402 is provided on the inner wall of the groove, a locking rod 5 is slidably connected to the inner wall of the sliding hole, a locking hole cooperating with the locking rod 5 is provided on the inner wall of the spline keypad 3, and by arranging the locking rod 5 and the locking hole, the key tooth segment 401 and the spline keypad 3 can be prevented from sliding or shaking in the longitudinal direction.

[0024] A fixing plate 6 is provided inside the groove, and the fixing plate 6 is fixedly connected to one end of the locking rod 5. A first spring 7 is sleeved on the surface of the locking rod 5, and one end of the first spring 7 is fixedly connected to the inner wall of the groove, and the other end of the first spring 7 is fixedly connected to the fixing plate 6. By providing the first spring 7, the two fixing plates 6 can be brought close to each other under normal conditions, so that the locking rod 5 moves inward. Under normal conditions, there is a gap between the two fixing plates.

[0025] A through hole is provided on the inner wall of the groove, and a push rod 8 is slidably connected to the inner wall of the through hole. One end of the push rod 8 is provided with a chamfer, and the other end of the push rod 8 is fixedly connected to a limiting block 9. A buckle groove 10 is provided on the surface of the limiting block 9. By setting the push rod 8 and the chamfer, it can be moved between the two fixing plates 6 and push the two fixing plates 6 away from each other, thereby making the two locking rods 5 move away from each other to achieve locking.

[0026] The front end of the mounting block 402 is fixedly connected to a connecting rod 403, and the front end of the connecting rod 403 is fixedly connected to a convex portion 404 that cooperates with the output shaft of the operating mechanism. The convex portion 404 is used to fit with the concave portion on the output shaft of the operating mechanism. The cross-section of the convex portion 404 is a rectangle. In other embodiments, the cross-section of the convex portion 404 can also be other shapes, such as a triangle or a hexagon.

[0027] A receiving groove 11 for accommodating the push rod 8 is provided on the surface of the connecting rod 403, and a second spring 12 is fixedly connected to the inner wall of the receiving groove 11. One end of the second spring 12 is fixedly connected to the limit block 9. By providing the second spring 12, the push rod 8 can be kept in a position between the two fixing plates 6 to ensure stability.

[0028] Three groups of contact mounting arms 13 are fixedly connected to the surface of the main shaft body 1, and reinforcing ribs 14 are fixedly connected to the surface of the contact mounting arms 13. The contact mounting arms 13 extend radially outwardly along the main shaft body 1 for mounting moving contacts.

[0029] A plurality of ribs 15 are arranged on the surface of the main shaft body 1. The main shaft body 1 is made of reinforced flame-retardant nylon material. The strength of the main shaft body 1 is improved by arranging the ribs 15. The reinforced flame-retardant nylon material is mainly composed of nylon resin and a certain proportion of reinforcing agent, flame retardant, etc., which is the existing technology.

[0030] Working principle: When the insulating spindle is in use, the user first pulls the limit block 9 toward the front side through the buckle groove 10, and the limit block 9 drives the push rod 8 to move, so that the push rod 8 is disengaged from the two locking rods 5, thereby resetting the first spring 7, and the first spring 7 pushes the two fixing plates 6 to approach each other, and the fixing plate 6 drives the locking rod 5 to move, so that the two locking rods 5 are close to each other, and then the key tooth segment 401 is inserted into the flower keyboard 3 and the buckle groove 10 is released. The second spring 12 is reset to push the limit block 9 to move backward, and the limit block 9 drives the push rod 8 to move. The push rod 8 fits and is inserted between the chamfered corners and pushes the two fixing plates 6 away from each other. The two fixing plates 6 compress the first spring 7 and drive the two locking rods 5 away from each other and insert into the locking hole, preventing the key tooth segment 401 and the flower keyboard 3 from sliding or shaking in the longitudinal direction, thereby solving the problems of unstable connection and inconvenient operation in the prior art.

[0031] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0032] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An insulating spindle, comprising a spindle body (1), wherein two ends of the spindle body (1) are respectively fixedly connected with a support block (2) and a spline key (3), and a coupling (4) is arranged inside the spline key (3), characterized in that: The coupling (4) comprises a key tooth segment (401) matched with the spline keypad (3); the front end of the key tooth segment (401) is fixedly connected with a mounting block (402); a groove is provided on the back of the mounting block (402); a sliding hole penetrating the surface of the mounting block (402) is provided on the inner wall of the groove; a locking rod (5) is slidably connected to the inner wall of the sliding hole; and a locking hole matched with the locking rod (5) is provided on the inner wall of the spline keypad (3).

2. The insulating main shaft according to claim 1, characterized in that: A fixing plate (6) is arranged inside the groove, and the fixing plate (6) is fixedly connected to one end of the locking rod (5). A first spring (7) is sleeved on the surface of the locking rod (5), and one end of the first spring (7) is fixedly connected to the inner wall of the groove, and the other end of the first spring (7) is fixedly connected to the fixing plate (6).

3. The insulating main shaft according to claim 1, characterized in that: A through hole is provided on the inner wall of the groove, and a push rod (8) is slidably connected to the inner wall of the through hole. One end of the push rod (8) is provided with a chamfer. The other end of the push rod (8) is fixedly connected to a limit block (9). A buckle groove (10) is provided on the surface of the limit block (9).

4. The insulating main shaft according to claim 3, characterized in that: The front end of the mounting block (402) is fixedly connected to a connecting rod (403), and the front end of the connecting rod (403) is fixedly connected to a convex portion (404) that cooperates with the output shaft of the operating mechanism.

5. An insulating main shaft according to claim 4, characterized in that: The surface of the connecting rod (403) is provided with a receiving groove (11) for receiving the push rod (8), the inner wall of the receiving groove (11) is fixedly connected with a second spring (12), and one end of the second spring (12) is fixedly connected to the limit block (9).

6. The insulating main shaft according to claim 1, characterized in that: Three groups of contact piece mounting arms (13) are respectively fixedly connected to the surface of the main shaft body (1), and reinforcing ribs (14) are fixedly connected to the surface of the contact piece mounting arms (13).

7. The insulating main shaft according to claim 1, characterized in that: A plurality of ribs (15) are arranged on the surface of the main shaft body (1), and the main shaft body (1) is made of reinforced flame-retardant nylon material.

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