Novel anti-loose balance weight limiting frame

Abstract

A novel anti-loose balance weight limiting frame comprises a vertically arranged limiting guide pipe, an upper bracket, a lower bracket, an upper horizontal support, a lower horizontal support and a bolt pin, the upper bracket, the lower bracket, the upper horizontal support and the lower horizontal support are located on one side of the limiting guide pipe, and one end of the upper horizontal support and one end of the lower horizontal support are fixedly connected with the upper bracket and the lower bracket respectively. The outer diameter of the cylindrical section I at the upper part of the bolt pin is smaller than the bottom diameter of the external thread section at the lower part; a nut is coaxially fixed to the upper end of the limiting guide pipe, and the inner diameter of the nut is smaller than that of the limiting guide pipe. After the bolt pin penetrates through the other end of the upper horizontal support from top to bottom, the external thread section rotates to pass through the nut and then extends into the limiting guide pipe, so that the first cylindrical section and the nut as well as the external thread section and the limiting guide pipe form clearance sleeving respectively, and the upper end of the limiting guide pipe and the upper horizontal support are connected together; a vertical shaft is arranged at the other end of the lower horizontal support and inserted into the lower end of the limiting guide pipe, and the lower end of the limiting guide pipe and the lower horizontal support are connected together.

Description

Technical Field

[0001] The utility model relates to the technical field of electrified railway contact network equipment, in particular to a novel anti-loosening and falling weight limiting frame. Background Art

[0002] The weight limiting frame is usually used in conjunction with the weight string to fix the weight string at the anchor point, thereby achieving tension compensation for the contact network system. At present, the upper end of the limiting guide tube in the weight limiting frame is directly connected and fixed to the upper horizontal support by bolts, and the lower end is connected to the lower horizontal support by hook bolts. For conventional railways and passenger-dedicated lines, the connection of the limiting guide tube will not loosen due to the low operating speed. For high-speed railways, the speed is significantly faster than that of conventional railways and passenger-dedicated lines. In addition, the frequency of passing vehicles in some railway sections is high, and the vibration of the contact network system will also accelerate. Over time, the connection of the limiting guide tube will become loose, affecting the safe operation of the train. Utility Model Content

[0003] The utility model provides a novel anti-loosening and falling weight limiting frame to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a new type of anti-loosening and falling weight limiting frame, including a vertically arranged limiting guide tube and an upper bracket, a lower bracket, an upper horizontal support and a lower horizontal support located on one side of the limiting guide tube, one end of the upper horizontal support and the lower horizontal support are respectively connected and fixed to the upper bracket and the lower bracket, and also include a bolt pin, the outer diameter of the cylindrical section 1 at the upper part of the bolt pin is smaller than the bottom diameter of the external thread section at the lower part; a nut is coaxially fixed to the upper end of the limiting guide tube, and the bottom diameter of the nut is smaller than the inner diameter of the limiting guide tube; after the bolt pin passes through the other end of the upper horizontal support from top to bottom, the external thread section is rotated through the nut and then extends into the limiting guide tube, so that the cylindrical section 1 and the nut, the external thread section and the limiting guide tube form a gap set respectively, connecting the upper end of the limiting guide tube with the upper horizontal support; the other end of the lower horizontal support has a vertical axis, and the vertical axis is inserted into the lower end of the limiting guide tube, connecting the lower end of the limiting guide tube with the lower horizontal support.

[0005] The upper end of the limiting conduit is provided with a horizontal through hole, the lower end of the bolt pin is provided with a horizontal through hole, and a limiting pin is installed in the horizontal through hole and the horizontal through hole.

[0006] The lower horizontal support is L-shaped.

[0007] The lower end of the bolt pin has a second cylindrical section, and the horizontal through hole is a strip-shaped hole and is axially arranged on the second cylindrical section.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. The utility model changes the connection structure between the upper end of the limiting guide tube and the bolt pin. After installation, the cylindrical section at the upper part of the bolt pin and the nut, and the external thread section at the lower part and the limiting guide tube form a gap set respectively. When running on the line, it can effectively prevent the bolt pin from retreating and falling out due to vibration, thereby ensuring a reliable connection between the limiting guide tube and the upper bracket.

[0010] 2. The utility model connects the limiting guide tube and the bolt pin together by setting a limit pin, thereby preventing the bolt pin from rotating, and further preventing the bolt pin from retreating and falling out due to vibration.

[0011] 3. The utility model has a simple structure and low production cost, and is suitable for promotion and application in high-speed railways. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the connection structure of the upper end of the limiting conduit of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the connector of the utility model;

[0015] Figure 4 It is a schematic cross-sectional view of the upper end structure of the restriction catheter of the utility model;

[0016] Figure 5 It is a schematic diagram of the horizontal support structure of the utility model. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-5 Specific implementation mode The utility model is described in detail.

[0018] A novel anti-loosening weight limiting frame comprises a vertically arranged limiting guide tube 1 and an upper bracket 2, a lower bracket 3, an upper horizontal support 4 and a lower horizontal support 5 located on one side of the limiting guide tube 1, one end of the upper horizontal support 4 and the lower horizontal support 5 are respectively connected and fixed to the upper bracket 2 and the lower bracket 3, and also comprises a bolt pin 6, the outer diameter of the cylindrical section 6-1 at the upper part of the bolt pin 6 is smaller than the bottom diameter of the external thread section 6-2 at the lower part; a nut 7 is coaxially fixed to the upper end of the limiting guide tube 1, and the bottom diameter of the nut 7 is smaller than the inner diameter of the limiting guide tube 1; After the bolt pin 6 passes through the other end of the upper horizontal support 4 from top to bottom, the external thread section 6-2 is rotated through the nut 7 and then extends into the limiting conduit 1, so that the cylindrical section 6-1 and the nut 7, the external thread section 6-2 and the limiting conduit 1 form a gap set respectively, connecting the upper end of the limiting conduit 1 and the upper horizontal support 4 together; the other end of the lower horizontal support 5 has a vertical axis 5-1, and the vertical axis 5-1 is inserted into the lower end of the limiting conduit 1, connecting the lower end of the limiting conduit 1 and the lower horizontal support 5 together.

[0019] In one embodiment, the upper end of the limiting guide tube 1 is provided with a horizontal through hole 1-1, the lower end of the bolt pin 6 is provided with a horizontal through hole 6-3, and the horizontal through hole 1-1 and the horizontal through hole 6-3 are provided with a limit pin 8, thereby further improving the reliability of anti-loosening.

[0020] In one embodiment, the limiting pin 8 is preferably a cotter pin.

[0021] In one embodiment, the lower horizontal support 5 is L-shaped.

[0022] In one embodiment, the lower end of the bolt pin 6 has a cylindrical section 6-4, and the horizontal through hole 6-3 is a strip-shaped hole and is axially arranged on the cylindrical section 6-4.

[0023] In one embodiment, the connecting end of the upper horizontal support 4 and the upper bracket 2 has a strip hole 4-1, and the connecting end passes through the strip hole 4-1 through a U-bolt pair 9 mounted on the upper bracket 2 to connect and fix the upper horizontal support 4 to the upper bracket 2.

[0024] In one embodiment, the connecting end of the lower horizontal support 5 and the lower bracket 3 has an external thread 5-2, and the external thread 5-2 passes through the lower bracket 3 and is threadedly connected to the external thread 5-2 through anti-loosening nuts 10 located on both sides of the lower bracket 3, so as to connect and fix the lower horizontal support 5 to the lower bracket 3.

[0025] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A novel anti-loosening weight limiting frame, comprising a vertically arranged limiting guide tube (1) and an upper bracket (2), a lower bracket (3) and an upper horizontal support (4) and a lower horizontal support (5) located on one side of the limiting guide tube (1), wherein one end of the upper horizontal support (4) and the lower horizontal support (5) are respectively connected and fixed to the upper bracket (2) and the lower bracket (3), and characterized in that: It also includes a bolt pin (6), wherein the outer diameter of the cylindrical section 1 (6-1) at the upper part of the bolt pin (6) is smaller than the bottom diameter of the external thread section (6-2) at the lower part; a nut (7) is coaxially fixed to the upper end of the limiting conduit (1), and the bottom diameter of the nut (7) is smaller than the inner diameter of the limiting conduit (1); after the bolt pin (6) passes through the other end of the upper horizontal support (4) from top to bottom, the external thread section (6-2) is rotated through the nut (7) and then extends into the limiting conduit (1), thereby forming a gap sleeve between the cylindrical section 1 (6-1) and the nut (7), and between the external thread section (6-2) and the limiting conduit (1), respectively, to connect the upper end of the limiting conduit (1) and the upper horizontal support (4); the other end of the lower horizontal support (5) has a vertical shaft (5-1), and the vertical shaft (5-1) is inserted into the lower end of the limiting conduit (1), to connect the lower end of the limiting conduit (1) and the lower horizontal support (5) together.

2. The novel anti-loosening weight limiting frame according to claim 1 is characterized in that: The upper end of the limiting guide tube (1) is provided with a horizontal through hole (1-1), the lower end of the bolt pin (6) is provided with a horizontal through hole (6-3), and a limiting pin (8) is installed in the horizontal through hole (1-1) and the horizontal through hole (6-3).

3. The novel anti-loosening weight limiting frame according to claim 2 is characterized in that: The lower horizontal support (5) is L-shaped.

4. The novel anti-loosening weight limiting frame according to claim 3 is characterized in that: The lower end of the bolt pin (6) has a second cylindrical section (6-4), and the horizontal through hole (6-3) is a strip-shaped hole and is axially arranged on the second cylindrical section (6-4).

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