Contact net pulley compensation device

Abstract

A pulley compensation device for a contact network comprises a pair of fixed pulley supports, a compensation rope and a pair of movable pulley supports, each fixed pulley support is composed of a triangular structure body, a horizontal mounting plate, a supporting column connecting plate and a vertical mounting plate, and the horizontal mounting plates, the supporting column connecting plates and the vertical mounting plates extend out of the three vertexes of the triangular structure bodies respectively. The supporting column connecting plate is higher than the horizontal mounting plate, and the vertical mounting plate is lower than the horizontal mounting plate; a first fixed pulley and a second fixed pulley are respectively mounted between the horizontal mounting plates, a pair of guide wheel assemblies is mounted between the vertical mounting plates, and a movable pulley is mounted between the movable pulley brackets; one end of the compensation rope is hinged to the movable pulley support, and the other end of the compensation rope sequentially bypasses the second fixed pulley, the movable pulley and the first fixed pulley and then vertically and downwards penetrates through a rope groove defined by the pair of guide wheel assemblies to be connected with the balance weight string; the center of the rope groove and the wheel groove centers of the first fixed pulley and the second fixed pulley are located on the same vertical plane.

Description

Technical Field

[0001] The utility model relates to the technical field of contact network line tension compensation, in particular to a contact network pulley compensation device. Background Art

[0002] In the field of electrified railway contact network, the pulley compensation device is mainly used for contact network and urban rail transit flexible suspension anchor to compensate and adjust the tension of the line. The traditional pulley compensation device consists of a fixed pulley block, a movable pulley, a pulley mounting plate, a compensation rope, etc. The movable pulley connects the line, and the compensation rope bypasses the fixed pulley to connect the weight string. The gravity of the weight string keeps the tension of the line balanced. When the temperature changes, the expansion and contraction of the line causes the weight string to rise or fall, and the compensation rope and the fixed pulley groove repeatedly rub against each other. In actual use, the fixed pulley is often affected by the tightening force of the line, the product installation operation is not up to standard, or the gap between the connectors is too large, causing the fixed pulley to deviate in the direction of the line, resulting in eccentric wear of the compensation rope and the side of the wheel groove. In severe cases, the compensation rope may fall out of the wheel groove. Utility Model Content

[0003] The utility model provides a contact network pulley compensation device to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a contact network pulley compensation device, comprising a pair of fixed pulley brackets, a compensation rope and a pair of movable pulley brackets, the fixed pulley brackets are composed of a triangular structure main body and a horizontal mounting plate, a pillar connecting plate and a vertical mounting plate respectively extending from the three vertices of the triangular structure main body, and the pillar connecting plate is higher than the horizontal mounting plate, and the vertical mounting plate is lower than the horizontal mounting plate; a first fixed pulley and a second fixed pulley are respectively installed between the horizontal mounting plates, a pair of guide wheel assemblies are installed between the vertical mounting plates, and a movable pulley is installed between the movable pulley brackets; one end of the compensation rope is hinged on the movable pulley bracket, and the other end successively passes around the second fixed pulley, the movable pulley and the first fixed pulley, and then vertically downward passes through a rope groove surrounded by a pair of guide wheel assemblies and is connected in series with a sinker; the center of the rope groove and the center of the wheel groove of the first fixed pulley and the second fixed pulley are on the same vertical plane.

[0005] The guide wheel assembly includes a U-shaped bracket and a guide wheel, and the guide wheel is installed in the U-shaped bracket through a mounting shaft; a strip hole is horizontally arranged on the vertical mounting plate, and the connecting bolt passes through the strip hole and is threadedly connected to the back of the U-shaped bracket to fix the guide wheel assembly on the vertical mounting plate, and the U-shaped bracket can be horizontally moved and adjusted along the strip hole so that the center of the rope groove surrounded by the guide wheel and the center of the wheel groove of the first fixed pulley and the second fixed pulley are on the same vertical plane.

[0006] One side of the triangular structure body is arranged vertically, the support connecting plate is located at the upper end of the side, and the vertical mounting plate is located at the lower end of the side.

[0007] The guide wheel is sleeved on the installation shaft through an oil-free lubricating bearing, and the oil-free lubricating bearing is limited by limiting sleeves sleeved on both ends of the installation shaft.

[0008] A sealing ring is installed between the limiting sleeve and the guide wheel.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The utility model improves the structure of the fixed pulley bracket and installs a pair of guide wheels thereunder. The guide wheels guide the compensating rope to always be in the center of the wheel groove of the fixed pulley during the process of rising or falling, thereby preventing eccentric wear of the compensating rope and the side of the wheel groove.

[0011] 2. The guide wheel of the utility model can be adjusted horizontally so that the center of the rope groove formed by the guide wheel and the center of the wheel groove of the fixed pulley are on the same vertical plane to adapt to the deflection angle of the fixed pulley in the direction of the line, further improving the use effect of anti-eccentric wear.

[0012] 3. The guide wheel assembly of the utility model has the effects of anti-stuck, maintenance-free, dust-proof and waterproof, long service life and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of a pair of fixed pulley brackets of the utility model;

[0015] Figure 3 yes Figure 1 Schematic diagram of the structural section at AA in the middle;

[0016] Figure 4 It is a cross-sectional schematic diagram of the guide wheel installation structure of the utility model. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-4 The utility model is described in detail with specific implementation modes.

[0018] A contact network pulley compensation device comprises a pair of fixed pulley brackets 1, a compensation rope 4 and a pair of movable pulley brackets 6, wherein the fixed pulley bracket 1 is composed of a triangular structure main body 1-1 and a horizontal mounting plate 1-2, a support connecting plate 1-3 and a vertical mounting plate 1-4 extending from three vertices of the triangular structure main body 1-1, and the support connecting plate 1-3 is higher than the horizontal mounting plate 1-2, and the vertical mounting plate 1-4 is lower than the horizontal mounting plate 1-2; the horizontal mounting plates 1-2 are respectively installed with The first fixed pulley 2 and the second fixed pulley 3, a pair of guide wheel assemblies 7 are installed between the vertical mounting plates 1-4, and a movable pulley 5 is installed between the movable pulley brackets 6; one end of the compensation rope 4 is hinged on the movable pulley bracket 6, and the other end passes through the second fixed pulley 3, the movable pulley 5 and the first fixed pulley 2 in sequence, and then vertically downward passes through the rope groove 8 surrounded by a pair of guide wheel assemblies 7 and is connected in series with the weight; the center of the rope groove 8 and the center of the wheel groove of the first fixed pulley 2 and the second fixed pulley 3 are on the same vertical plane.

[0019] In one embodiment, the guide wheel assembly 7 includes a U-shaped bracket 7-1 and a guide wheel 7-2, and the guide wheel 7-2 is installed in the U-shaped bracket 7-1 through the installation shaft 7-3; a strip hole 1-5 is horizontally arranged on the vertical mounting plate 1-4, and the connecting bolt passes through the strip hole 1-5 and is threadedly connected to the back of the U-shaped bracket 7-1 to fix the guide wheel assembly 7 on the vertical mounting plate 1-4, and the U-shaped bracket 7-1 can be horizontally moved and adjusted along the strip hole 1-5, so that the center of the rope groove 8 enclosed by the guide wheel 7-2 and the center of the wheel groove of the first fixed pulley 2 and the second fixed pulley 3 are on the same vertical plane.

[0020] In one embodiment, one side of the triangular structure body 1-1 is arranged vertically, the support connecting plate 1-3 is located at the upper end of the side, and the vertical mounting plate 1-4 is located at the lower end of the side.

[0021] In one embodiment, the guide wheel 7-2 is mounted on the mounting shaft 7-3 via an oil-free lubricating bearing 7-4, and the oil-free lubricating bearing 7-4 is limited by a limiting sleeve 7-5 mounted on both ends of the mounting shaft 7-3. A sealing ring 7-6 is installed between the limiting sleeve 7-5 and the guide wheel 7-2.

[0022] The lower end of the compensation rope 4 of the utility model is connected with a double-ear wedge-shaped wire clamp 9 for connecting the weight string. The utility model can meet the compensation requirements of transmission ratios of 1:2, 1:3, and 1:4.

[0023] 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 contact network pulley compensation device, characterized in that: The invention comprises a pair of fixed pulley brackets (1), a compensation rope (4) and a pair of movable pulley brackets (6); the fixed pulley bracket (1) is composed of a triangular structure body (1-1) and horizontal mounting plates (1-2), a support connecting plate (1-3) and a vertical mounting plate (1-4) respectively extending from three vertices of the triangular structure body (1-1); the support connecting plate (1-3) is higher than the horizontal mounting plate (1-2), and the vertical mounting plate (1-4) is lower than the horizontal mounting plate (1-2); a first fixed pulley (2) is respectively installed between the horizontal mounting plates (1-2) and the second fixed pulley (3), a pair of guide wheel assemblies (7) are installed between the vertical mounting plates (1-4), and a movable pulley (5) is installed between the movable pulley brackets (6); one end of the compensation rope (4) is hinged on the movable pulley bracket (6), and the other end passes through the second fixed pulley (3), the movable pulley (5) and the first fixed pulley (2) in sequence, and then passes vertically downward through a rope groove (8) surrounded by a pair of guide wheel assemblies (7) to be connected to the weight in series; the center of the rope groove (8) is on the same vertical plane as the center of the wheel grooves of the first fixed pulley (2) and the second fixed pulley (3).

2. The contact network pulley compensation device according to claim 1, characterized in that: The guide wheel assembly (7) comprises a U-shaped bracket (7-1) and a guide wheel (7-2), wherein the guide wheel (7-2) is installed in the U-shaped bracket (7-1) via a mounting shaft (7-3); a strip hole (1-5) is horizontally arranged on the vertical mounting plate (1-4), and a connecting bolt passes through the strip hole (1-5) and is threadedly connected to the back of the U-shaped bracket (7-1), thereby fixing the guide wheel assembly (7) on the vertical mounting plate (1-4), and the U-shaped bracket (7-1) can be horizontally moved and adjusted along the strip hole (1-5), so that the center of the rope groove (8) enclosed by the guide wheel (7-2) and the center of the wheel groove of the first fixed pulley (2) and the second fixed pulley (3) are on the same vertical plane.

3. The contact network pulley compensation device according to claim 1 or 2, characterized in that: One side of the triangular structure body (1-1) is arranged vertically, the support connecting plate (1-3) is located at the upper end of the side, and the vertical mounting plate (1-4) is located at the lower end of the side.

4. The contact network pulley compensation device according to claim 2, characterized in that: The guide wheel (7-2) is sleeved on the installation shaft (7-3) via an oil-free lubricating bearing (7-4), and the oil-free lubricating bearing (7-4) is limited in position by limiting sleeves (7-5) sleeved on both ends of the installation shaft (7-3).

5. The contact network pulley compensation device according to claim 4, characterized in that: A sealing ring (7-6) is installed between the limiting sleeve (7-5) and the guide wheel (7-2).

Images