A non-metallic wrist connector

Abstract

A non-metallic wrist-arm connector comprises a left half hoop body and a right half hoop body which are arranged opposite to each other, wherein the opposite surfaces of the left half hoop body and the right half hoop body are provided with an arc hook head, a transverse semicircular groove and a vertical or oblique semicircular groove from top to bottom in sequence; after the left half hoop body and the right half hoop body are buckled together, the upper ends are connected by an arc hook head, and the lower ends are connected and fixed by an outer sleeve locking sleeve, and then a main hoop is formed by two transverse semicircular grooves, and an auxiliary hoop is formed by two vertical or oblique semicircular grooves. The present invention adopts a double hoop structure and a non-bolt auxiliary connection method, which saves labor costs and time costs for installation and maintenance, and improves the efficiency of construction and operation maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of electrified railway contact network components, and in particular relates to a non-metallic wrist arm connector. Background Art

[0002] Lightweighting of the contact network and improving the design level of electrical performance are the development direction of rail transit equipment. The prior art closest to the present invention is the "insulated contact network suspension device CN202753803U", which is mainly characterized by the horizontal arm, oblique arm, arm support rod, load-bearing wire clamp, positioning tube and positioner in the suspension device are all made of non-metallic materials; the insulator with a concave and convex outer surface used in conventional technology is eliminated, and each arm supported by non-metallic materials is replaced. These can greatly improve the electrical performance of the suspension device, make the wet flashover voltage high, and improve the level of the contact network safety protection system. However, its arm connection method still uses traditional connection hardware, including more bolt pair parts, and uses bolt pairs to apply tightening torque to prevent axial slippage. For rail transit operating units, the contact network inspection work is mainly to check whether the bolt pair is loose. Therefore, its installation and maintenance will cost huge manpower and time costs. In addition, the patent still uses traditional connection hardware, which has the defects of increasing the weight of the arm and reducing the electrical insulation performance. Summary of the invention

[0003] The present invention provides a non-metallic wrist-arm connector to overcome the deficiencies of the prior art.

[0004] The technical solution adopted by the present invention is: a non-metallic wrist-arm connector, comprising a left half hoop body and a right half hoop body arranged opposite to each other, wherein the left half hoop body and the right half hoop body have arc-shaped hook heads, transverse semicircular grooves and vertical or oblique semicircular grooves on their opposite surfaces from top to bottom;

[0005] After the left half hoop body and the right half hoop body are buckled together, the upper ends are connected by an arc-shaped hook head and the lower ends are connected and fixed by an outer locking sleeve, thereby forming a main hoop through two horizontal semicircular grooves and forming an auxiliary hoop through two vertical or oblique semicircular grooves.

[0006] The left half hoop body and the right half hoop body are provided with positioning protrusions and positioning grooves on the opposite surfaces on both sides of the vertical or oblique semicircular groove, and the positioning protrusions are embedded in the positioning grooves.

[0007] The positioning groove is a wedge-shaped groove, and the positioning protrusion is a wedge-shaped protrusion matching the wedge-shaped groove.

[0008] The lower ends of the outer walls of the left half hoop body and the right half hoop body are both provided with locking grooves, and the inner wall of the inner end of the locking sleeve is provided with a locking platform, and the locking platform is clamped on the locking groove.

[0009] The locking groove is composed of an insertion groove and a clamping groove connected to one side of the insertion groove, and an anti-loosening groove is provided at the lower end of the clamping groove, and an anti-loosening platform is provided at the lower end of the locking platform. After the locking sleeve is aligned with the insertion groove through the locking platform and is sleeved on the lower ends of the outer walls of the left half clamp body and the right half clamp body, the locking sleeve is rotated so that the locking platform is clamped in the clamping groove and the anti-loosening platform is clamped in the anti-loosening groove.

[0010] The inner surfaces of the transverse semicircular groove and the vertical or oblique semicircular groove respectively have the internal threads arranged along the circumference thereof.

[0011] Grid reinforcement ribs are arranged on the outer walls of the left half hoop body and the right half hoop body.

[0012] The arc-shaped hook head is a C-shaped hook head, and the C-shaped hook head at the upper end of the right half hoop body is inserted into the C-shaped hook head at the upper end of the left half hoop body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention adopts a double hoop structure and a non-bolt pair connection method, which saves labor costs and time costs for installation and maintenance, and improves the efficiency of construction and operation maintenance.

[0015] 2. The present invention adopts non-metallic materials as a whole, which is light in weight and has a high level of electrical insulation performance, which greatly improves the electrical insulation performance and lightning protection level of the contact network and reduces grounding faults.

[0016] 3. The inner surfaces of the double clamp structures of the present invention are both provided with internal threads, which can effectively prevent axial slippage.

[0017] 4. The connection method of the locking sleeve of the present invention not only locks reliably, but also effectively prevents loosening and slipping during use.

[0018] 5. The outer surface of the present invention is provided with grid reinforcement ribs, which ensures the structural strength while effectively reducing the weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of embodiment 1 of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the left half hoop body of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the right half hoop body of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure between the locking sleeve and the left and right half hoop bodies of the present invention;

[0023] Figure 5 yes Figure 4A partial enlarged schematic diagram in the middle;

[0024] Figure 6 It is a structural schematic diagram of embodiment 2 of the present invention;

[0025] Figure 7 , 8 It is a schematic diagram of the use status of the present invention. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-8 The present invention is described in detail with specific embodiments.

[0027] Example 1: Combination Figure 1 , 2 , 3, 4, 5, 7, and 8 are explained in detail.

[0028] A non-metallic wrist-arm connector comprises a left half hoop body 1 and a right half hoop body 2 which are arranged opposite to each other, wherein the opposite surfaces of the left half hoop body 1 and the right half hoop body 2 are provided with an arc hook 3, a transverse semicircular groove 4 and an oblique semicircular groove 5 from top to bottom in sequence; after the left half hoop body 1 and the right half hoop body 2 are buckled together, the upper ends are connected by the arc hook 3, and the lower ends are connected and fixed by an outer sleeve locking sleeve 6, thereby forming a main hoop 7 through two transverse semicircular grooves 4, and forming an auxiliary hoop 8 through two vertical or oblique semicircular grooves 5.

[0029] The arc-shaped hook head 3 is preferably a C-shaped hook head, and the C-shaped hook head at the upper end of the right half hoop body 2 is inserted into the C-shaped hook head at the upper end of the left half hoop body 1.

[0030] In order to ensure that the left and right half hoop bodies are positioned accurately after being buckled, the left half hoop body 1 and the right half hoop body 2 are provided with positioning protrusions 10 and positioning grooves 9 on the opposite surfaces on both sides of the vertical or oblique semicircular groove 5, and the positioning protrusions 10 are embedded in the positioning grooves 9. The positioning grooves 9 are preferably wedge-shaped grooves, and the positioning protrusions 10 are preferably wedge-shaped protrusions matching the wedge-shaped grooves.

[0031] In order to ensure that the locking sleeve 6 is locked reliably and will not retreat and loosen, the lower ends of the outer walls of the left half hoop body 1 and the right half hoop body 2 are provided with locking grooves 11, and the inner wall of the inner end of the locking sleeve 6 is provided with a locking platform 12; the locking groove 11 is composed of an insertion groove 11-1 and a clamping groove 11-2 connected to one side of the insertion groove 11-1, and the lower end of the clamping groove 11-2 is provided with an anti-loosening groove 11-3, and the lower end of the locking platform 12 is provided with an anti-loosening platform 12-1. After the locking sleeve 6 is aligned with the insertion groove 11-1 by the locking platform 12 and is sleeved on the lower ends of the outer walls of the left half hoop body 1 and the right half hoop body 2, the locking sleeve 6 is rotated so that the locking platform 12 is inserted into the clamping groove 11-2 and the anti-loosening platform 12-1 is inserted into the anti-loosening groove 11-3.

[0032] In order to effectively prevent the connector from slipping axially, the inner surfaces of the transverse semicircular groove 4 and the vertical or oblique semicircular groove 5 respectively have the internal threads 13 arranged along the circumference thereof.

[0033] In order to reduce the weight of the left and right half hoop bodies while ensuring their strength, mesh reinforcement ribs 14 are provided on the outer walls of the left and right half hoop bodies 1 and 2 .

[0034] The left half hoop body 1, the right half hoop body 2 and the locking sleeve 6 are preferably molded from a glass fiber insulation composite material.

[0035] This embodiment is mainly used for connecting the horizontal arm 15 and the diagonal support 16 in the arm device ( Figure 7 ), when connected, it is connected and fixed with the horizontal arm 15 through the main clamp 7, and connected and fixed with the diagonal support 16 through the auxiliary clamp 8. It can also be used for the connection between the diagonal arm 17 and the vertical support 18 in the arm device ( Figure 8 ), when connected, it is connected and fixed with the oblique wrist arm 17 through the main holding hoop 7, and connected and fixed with the vertical support 18 through the auxiliary holding hoop 8.

[0036] Example 2: Reference Figure 6 , 8 .

[0037] The basic structure is the same as that of embodiment 1, except that the semicircular groove 5 is vertically arranged to adapt to the connection between the horizontal arm 15 and the positioning tube 19 and the vertical support 18 in the arm device ( Figure 8 When connected, the main clamp 7 is connected and fixed with the horizontal arm 15 or the positioning tube 19, and the auxiliary clamp 8 is connected and fixed with the vertical support 18.

[0038] 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 non-metallic wrist arm connector, characterized in that: The invention comprises a left half hoop body (1) and a right half hoop body (2) which are arranged opposite to each other, wherein the opposite surfaces of the left half hoop body (1) and the right half hoop body (2) are provided with an arc hook head (3), a transverse semicircular groove (4) and a vertical or oblique semicircular groove (5) in sequence from top to bottom; after the left half hoop body (1) and the right half hoop body (2) are buckled together, the upper ends are connected by the arc hook head (3), and the lower ends are connected and fixed by a peripherally mounted locking sleeve (6), thereby forming a main hoop (7) through the two transverse semicircular grooves (4), and forming an auxiliary hoop (8) through the two vertical or oblique semicircular grooves (5); the lower ends of the outer walls of the left half hoop body (1) and the right half hoop body (2) are both provided with a locking groove (11), and the inner wall of the inner end of the locking sleeve (6) is provided with a locking groove (12). A locking platform (12) is provided on the locking platform (12), and the locking platform (12) is clamped on the locking groove (11); the locking groove (11) is composed of an insertion groove (11-1) and a clamping groove (11-2) connected to one side of the insertion groove (11-1), and the lower end of the clamping groove (11-2) is provided with an anti-loosening groove (11-3), and the lower end of the locking platform (12) is provided with an anti-loosening platform (12-1); after the locking sleeve (6) is aligned with the insertion groove (11-1) through the locking platform (12) and is sleeved on the lower ends of the outer walls of the left half clamping body (1) and the right half clamping body (2), the locking sleeve (6) is rotated to make the locking platform (12) clamped in the clamping groove (11-2) and the anti-loosening platform (12-1) clamped in the anti-loosening groove (11-3).

2. A non-metallic wrist-arm connector according to claim 1, characterized in that: The left half hoop body (1) and the right half hoop body (2) are provided with corresponding positioning protrusions (10) and positioning grooves (9) on the opposite surfaces on both sides of the vertical or oblique semicircular groove (5), and the positioning protrusions (10) are embedded in the positioning grooves (9).

3. A non-metallic wrist arm connector according to claim 2, characterized in that: The positioning groove (9) is a wedge-shaped groove, and the positioning protrusion (10) is a wedge-shaped protrusion matching the wedge-shaped groove.

4. The non-metallic wrist-arm connector according to claim 1, characterized in that: The inner surfaces of the transverse semicircular groove (4) and the vertical or oblique semicircular groove (5) are respectively provided with internal threads (13) arranged along the circumference thereof.

5. The non-metallic wrist-arm connector according to claim 4, characterized in that: Grid reinforcement ribs (14) are provided on the outer walls of the left half hoop body (1) and the right half hoop body (2).

6. A non-metallic wrist-arm connector according to claim 5, characterized in that: The arc-shaped hook head (3) is a C-shaped hook head, and the C-shaped hook head at the upper end of the right half hoop body (2) is inserted into the C-shaped hook head at the upper end of the left half hoop body (1).

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