Pull rod crank arm anti-falling device

Abstract

The utility model discloses a pull rod crank arm anti-drop device, which relates to the technical field of power transmission and transformation operation appliances and comprises a bearing seat, a transmission shaft is connected inside the bearing seat, a first pull rod crank arm and a second pull rod crank arm are sleeved outside the transmission shaft in a clamping manner, and a hoop is connected outside the middle end of the transmission shaft in a clamping manner. An opening is formed in one end of the hoop, a hole groove is formed in the opening, a first fastening bolt is in bolted connection with the interior of the hole groove, through holes are formed in the sides, away from the transmission shaft, of the first pull rod crank arm and the second pull rod crank arm, a telescopic rod is slidably connected into the through holes, and a connecting rod is fixedly connected to the top of the telescopic rod; according to the utility model, through the arrangement of the fastening bolt and the bolt gasket, the transmission shaft and the second pull rod crank arm are fixed, and the second pull rod crank arm is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission and transformation operation tools, in particular to a pull rod crank arm anti-dropping device. Background Art

[0002] The crank arm is one of the commonly used components on machinery and equipment. It is connected to other components through screws to achieve functions such as joint motion. The crank arm of the isolating switch is a commonly used switching device in the power system. It is mainly used for isolation and power off. When repairing the power system, it is necessary to isolate the equipment to be repaired to ensure the safety of the staff.

[0003] At present, the crank arm of the disconnector is usually a pull rod crank arm, which is convenient for the staff to adjust. However, due to the unstable connection between the pull rod crank arm and the transmission shaft, the pull rod crank arm is easy to fall off, resulting in the disconnector being unable to close, affecting the operator's work. Therefore, it is necessary to design a pull rod crank arm anti-falling device. Utility Model Content

[0004] The purpose of the utility model is to provide a pull rod crank arm anti-dropping device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a pull rod crank arm anti-drop device, comprising a bearing seat;

[0006] Transmission shaft. The external sleeve of the transmission shaft has a first pull rod arm and a second pull rod arm;

[0007] A clamp, the clamp is clamped on the outside of the middle end of the transmission shaft;

[0008] A bolt hole, the bolt hole being arranged inside the second pull rod crank arm on one side of the transmission shaft;

[0009] a second fastening bolt, the second fastening bolt being bolt-connected inside the bolt hole;

[0010] A bolt washer is connected between the second fastening bolt and the bottom of the second pull rod crank arm.

[0011] According to the above technical solution, an opening is provided at one end of the clamp, and a hole groove is provided inside the opening.

[0012] According to the above technical solution, the inside of the hole groove is bolted with a first fastening bolt.

[0013] According to the above technical solution, a through hole is provided on one side of the first pull rod elbow and the second pull rod elbow away from the transmission shaft, and a telescopic rod is slidably connected inside the through hole.

[0014] According to the above technical solution, the top of the telescopic rod is fixedly connected with a connecting rod.

[0015] According to the above technical solution, the other end of the connecting rod is fixedly connected to the outside of the bearing seat.

[0016] Compared with the prior art, the beneficial effect achieved by the utility model is as follows: the utility model fixes the transmission shaft and the second pull rod crank arm by providing fastening bolts and bolt washers to prevent the second pull rod crank arm from falling off, and at the same time fixes the other side of the first pull rod crank arm and the second pull rod crank arm by connecting rods and telescopic rods to ensure that the pull rod crank arm is fixed during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall top view structure of the utility model;

[0020] In the figure: 1. bearing seat; 2. transmission shaft; 3. first pull rod crank arm; 4. second pull rod crank arm; 5. clamp; 6. first fastening bolt; 7. bolt gasket; 8. second fastening bolt; 9. telescopic rod; 10. connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 The utility model provides a technical solution: a pull rod crank arm anti-drop device, comprising a bearing seat 1, the interior of the bearing seat 1 is connected with a transmission shaft 2;

[0023] The outer sleeve of the transmission shaft 2 has a first pull rod arm 3 and a second pull rod arm 4, and the first pull rod arm 3 and the second pull rod arm 4 are respectively sleeved on the upper and lower sides of the transmission shaft 2;

[0024] A clamp 5 is clamped on the outside of the middle end of the transmission shaft 2. An opening is provided at one end of the clamp 5. A hole groove is provided inside the opening. A first fastening bolt 6 is bolted inside the hole groove. The first fastening bolt 6 is used to fix the clamp 5. The clamp 5 is used to fix the transmission shaft 2.

[0025] A bolt hole is provided inside the second pull rod crank arm 4 located on one side of the transmission shaft 2, and a second fastening bolt 8 is bolted inside the bolt hole. A bolt washer 7 is connected between the second fastening bolt 8 and the bottom of the second pull rod crank arm 4, and the bolt washer 7 is used to fix the second fastening bolt 8 and the second pull rod crank arm 4;

[0026] A through hole is provided on the side of the first pull rod elbow 3 and the second pull rod elbow 4 away from the transmission shaft 2, and a telescopic rod 9 is slidably connected inside the through hole. The telescopic rod 9 connects the first pull rod elbow 3 and the second pull rod elbow 4, and a connecting rod 10 is fixedly connected to the top of the telescopic rod 9. The other end of the connecting rod 10 is fixedly connected to the outside of the bearing seat 1.

[0027] Working principle:

[0028] The staff puts the first pull rod arm 3 and the second pull rod arm 4 on the outside of the transmission shaft 2, fixes the transmission shaft 2 inside the bearing seat 1, clamps the middle end of the transmission shaft 2 through the clamp 5, and tightens the first fastening bolt 6 to fix the clamp 5;

[0029] Screw the second fastening bolt 8 into the second pull rod arm 4, and fix the second fastening bolt 8 and the second pull rod arm 4 through the bolt gasket 7, then control the telescopic rod 9 to extend through the connecting rod 10 to fix the other side of the first pull rod arm 3 and the second pull rod arm 4 to prevent the first pull rod arm 3 and the second pull rod arm 4 from falling off.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article 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, article or device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pull rod crank arm anti-drop device, characterized in that: include: Bearing seat (1); A transmission shaft (2), wherein the outer sleeve of the transmission shaft (2) comprises a first pull rod arm (3) and a second pull rod arm (4); A clamp (5), the clamp (5) being clamped on the outside of the middle end of the transmission shaft (2); A bolt hole, wherein the bolt hole is arranged inside the second pull rod crank arm (4) on one side of the transmission shaft (2); A second fastening bolt (8), the second fastening bolt (8) being bolted inside the bolt hole; A bolt washer (7), wherein the bolt washer (7) is connected between the second fastening bolt (8) and the bottom of the second pull rod crank arm (4).

2. The pull rod crank arm anti-drop device according to claim 1, characterized in that: One end of the clamp (5) is provided with an opening, and a hole groove is provided inside the opening.

3. The pull rod crank arm anti-drop device according to claim 2, characterized in that: The hole groove is internally bolted with a first fastening bolt (6).

4. The pull rod crank arm anti-drop device according to claim 3, characterized in that: A through hole is provided on the side of the first pull rod crank arm (3) and the second pull rod crank arm (4) away from the transmission shaft (2), and a telescopic rod (9) is slidably connected inside the through hole.

5. The pull rod crank arm anti-drop device according to claim 4, characterized in that: The top of the telescopic rod (9) is fixedly connected with a connecting rod (10).

6. The pull rod crank arm anti-drop device according to claim 5, characterized in that: The other end of the connecting rod (10) is fixedly connected to the outside of the bearing seat (1).

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