Carrier cable compensator for contact network

Abstract

The utility model discloses a catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary catenary a counterweight rope is wound at the other end of the roller, one end of the carrier cable and one end of the counterweight rope are fixed on the fixing ring, and the other end of the counterweight rope is connected with a counterweight block; the fixing mechanism is provided with a speed reducing mechanism used for reducing the descending speed of the balancing weight. Through the arrangement of the fixing mechanism, the balancing weight, the roller, the fixing ring and the speed reducing mechanism, the tension of the carrier cable can be maintained, meanwhile, the balancing weight cannot fall onto the ground to cause damage, the speed of the balancing weight is reduced when the balancing weight falls, and facilities below the balancing weight are safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a load cable compensator for overhead line system, belongs to the technical field of subway overhead line system. BACKGROUND

[0002] The overhead line system is a special form of power transmission line for supplying power to electric locomotives, which is erected along the overhead of railway line. It is composed of contact suspension, support device, positioning device, pillar and foundation. The contact suspension includes contact wire, dropper, load cable and connecting parts. The load cable is generally provided with a tension compensator to ensure that the load cable bears correct and continuous compensation force. However, the traditional tension compensator is only composed of a pulley and a counterweight, which can provide tension, but there is a possibility that the counterweight will fall rapidly and damage the lower facilities or cause other injuries when the load cable breaks accidentally. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a load cable compensator for overhead line system, which can slow down the falling speed of the counterweight and avoid the damage caused by the falling of the counterweight when the load cable breaks.

[0004] In order to achieve the above purpose, a load cable compensator for overhead line system, comprising a compensator body and a fixing mechanism for fixing the compensator body, the compensator body comprises a rotatable drum installed on the fixing mechanism, a fixing ring is arranged on the drum, one end of the drum is wound with a load cable, the other end of the drum is wound with a counterweight rope, one end of the load cable and the counterweight rope is fixed on the fixing ring, the other end of the counterweight rope is connected with a counterweight; a speed reducer is arranged on the fixing mechanism to slow down the falling speed of the counterweight.

[0005] Further, the speed reducer comprises a ratchet wheel sleeved on the drum, an annular frame is arranged on the outer side of the ratchet wheel, a ratchet is hinged on the inner side of the annular frame and matched with the ratchet wheel, a spring is arranged between the annular frame and the ratchet; the annular frame is rotatably arranged in a ring sleeve, the ring sleeve is fixedly installed on the fixing mechanism, a damping pad is arranged between the annular frame and the ring sleeve.

[0006] Further, the ratchet wheel is sleeved on the middle part of the drum, the fixing ring has two and is arranged on the drum on both sides of the ratchet wheel respectively, the load cable and the counterweight rope are wound on the drum on both sides of the ratchet wheel respectively, one end of the load cable and the counterweight rope is fixed on the two fixing rings respectively.

[0007] Further, the fixing mechanism comprises a stand as a support and two arc-shaped plates tightly clamped on the stand by bolts, one of the arc-shaped plates is provided with a bracket for installing the compensator body.

[0008] Further, the drum is provided with spiral grooves for winding the load bearing cable and the counterweight rope.

[0009] Further, the fixing mechanism is provided with a protective cover for protecting the compensator body.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] By setting the fixing mechanism and the drum, because the load bearing cable and the counterweight rope are wound on the drum, and the counterweight block is arranged at the end of the counterweight rope away from the drum, when the length of the load bearing cable changes due to thermal expansion and contraction or weather, the counterweight block can always provide corresponding tension to the load bearing cable through the counterweight rope and the drum, so that the tension of the load bearing cable is maintained; by setting the fixing ring, one end of the load bearing cable and the counterweight rope are fixed on the fixing ring, so that even if the load bearing cable breaks accidentally, the counterweight block and the drum are still connected, and the counterweight block will not fall to the ground and be damaged; by setting the speed reduction mechanism, when the load bearing cable breaks accidentally, the counterweight block will not fall suddenly, but will fall slowly, so that the connection between the counterweight block and the fixing ring is not damaged or broken, and the slow falling of the counterweight block is also safer for the facilities below. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the overall structure of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 It is a schematic view of use of the utility model.

[0015] In the drawing: 1, stand, 2, fixing mechanism, 21, arc plate, 22, support, 31, roller shaft, 32, drum, 33, fixing ring, 41, ratchet wheel, 42, ratchet, 43, spring, 44, ring frame, 45, ring sleeve, 46, fixing seat, 5, counterweight block. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings, and the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] For example, Figures 1 to 3As shown in the utility model embodiment provides a kind of catenary cable compensator, including compensator body and the fixed mechanism 2 for fixing compensator body, the fixed mechanism 2 includes as support's column 1 and two arc plates 21 by bolted on column 1, one of arc plate 21 is provided with the support 22 for installing compensator body;The compensator body includes rotatable installation on the fixed mechanism 2 on roller 32, the roller 32's roll shaft 31 is installed in the bearing seat on support 22, the roller 32 is provided with fixed ring 33, one end of the roller 32 is wound with cable, the other end of the roller 32 is wound with counterweight rope, one end of the cable and counterweight rope is fixed on fixed ring 33, the other end of the counterweight rope is connected with counterweight 5;The fixed mechanism 2 is equipped with the speed reducer mechanism for slowing down the descending speed of counterweight 5.Through setting fixed mechanism 2, roller 32, because cable and counterweight rope are all wound on roller 32, and counterweight rope is provided with counterweight 5 at the end away from roller 32, so when cable changes in length due to thermal expansion and contraction or weather, counterweight 5 can always provide corresponding tension to cable through counterweight rope and roller 32, so that the tension of cable is maintained;By setting fixed ring 33, one end of the cable and counterweight rope is fixed on fixed ring 33, so even if cable breaks unexpectedly, counterweight 5 and roller 32 remain connected, and counterweight 5 will not fall to the ground and cause damage;By setting speed reducer mechanism, when cable breaks unexpectedly, counterweight 5 will not fall suddenly, but slowly, thereby avoiding the possibility that the connection between counterweight rope and fixed ring 33 is damaged or broken due to the rapid descent of counterweight 5, and the slow descent of counterweight 5 is also safer for the facilities below.

[0018] Further, the speed reducer mechanism includes a ratchet wheel 41 fitted on the roller 32, the outer side of the ratchet wheel 41 is provided with an annular frame 44, the inner side of the annular frame 44 is hinged with a ratchet tooth 42 cooperating with the ratchet wheel 41, and a spring 43 is arranged between the annular frame 44 and the ratchet tooth 42;The annular frame 44 is rotatably arranged in a ring sleeve 45, the ring sleeve 45 is fixedly installed on the fixed mechanism 2 by a fixed seat 46, and a damping pad is arranged between the annular frame 44 and the ring sleeve 45. Figure 3 As shown, by setting the ratchet wheel 41, the ratchet tooth 42 and the damping pad, Figure 3As a reference, when the bearing cable is tightened to pull the drum 32 to rotate clockwise, the ratchet wheel 41 and the ratchet tooth 42 do not limit the rotation of the drum 32, and the counterweight 5 rises; when the bearing cable is loosened or even broken, the counterweight 5 pulls the drum 32 to rotate counterclockwise, at this time the ratchet wheel 41 and the ratchet tooth 42 are locked, but because the damping pad is arranged between the annular frame 44 and the ring sleeve 45, the annular frame 44 can still rotate counterclockwise slowly relative to the ring sleeve 45, thereby slowing down the falling speed of the counterweight 5, without affecting the adjustment of the tension of the bearing cable by the counterweight 5, and avoiding accidents caused by the rapid falling of the counterweight 5.

[0019] Further, the ratchet wheel 41 is sleeved on the middle part of the drum 32, the fixing ring 33 has two and is arranged on the drum 32 on both sides of the ratchet wheel 41 respectively, the bearing cable and the counterweight rope are wound on the drum 32 on both sides of the ratchet wheel 41 respectively, and one end of the bearing cable and the counterweight rope is fixed on the two fixing rings 33 close to each other respectively. Figure 1 and Figure 2 As shown in the figure, the bearing cable and the counterweight rope are symmetrically wound on the drum 32 on both sides of the ratchet wheel 41, which is not only beautiful, but also avoids the problem of disorderly winding of the counterweight rope and the bearing cable, and the stress on the drum 32 is also more balanced.

[0020] Further, the drum 32 is provided with a spiral groove for winding the bearing cable and the counterweight rope. Winding the bearing cable and the counterweight rope in the spiral groove avoids the friction between the ropes themselves and reduces wear.

[0021] Further, the fixing mechanism 2 is provided with a protective cover for protecting the body of the compensator. The protective cover can play a role in preventing rain and dust, so that the working state of each component of the body of the compensator is stable, and the service life is prolonged. Since the shape structure of the protective cover is not the focus of protection of the utility model, it is not shown in the drawing.

[0022] Working principle: by arranging the counterweight 5, the counterweight rope, the drum 32 and the fixing ring 33, the counterweight 5 and the bearing cable can pull the drum 32 to rotate, thereby compensating the tension of the bearing cable; at the same time, one end of the counterweight rope and the bearing cable is fixed on the fixing ring 33, so when the bearing cable is broken, the counterweight 5 is still connected through the counterweight rope and the fixing ring 33, avoiding the counterweight 5 from falling to the ground and causing accidents; by arranging the ratchet wheel and ratchet tooth structure and the damping pad, when the counterweight 5 falls, the damping pad can slow down the rotation speed of the drum 32 through the ratchet wheel and ratchet tooth structure, thereby slowing down the falling of the counterweight 5, which is safer.

[0023] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit and the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0024] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A catenary compensator for overhead contact lines, characterized in that, The compensator includes a compensator body and a fixing mechanism (2) for fixing the compensator body. The compensator body includes a roller (32) rotatably mounted on the fixing mechanism (2). A fixing ring (33) is provided on the roller (32). A load-bearing cable is wound around one end of the roller (32), and a counterweight rope is wound around the other end of the roller (32). One end of the load-bearing cable and the counterweight rope is fixed to the fixing ring (33), and the other end of the counterweight rope is connected to a counterweight (5). The fixing mechanism (2) is provided with a deceleration mechanism for slowing down the descent speed of the counterweight (5). The deceleration mechanism includes a ratchet (41) sleeved on the roller (32), an annular frame (44) is provided on the outer side of the ratchet (41), and a ratchet tooth (42) that cooperates with the ratchet (41) is hinged on the inner side of the annular frame (44). A spring (43) is provided between the annular frame (44) and the ratchet tooth (42). The annular frame (44) is rotatably disposed in a ring sleeve (45), and the ring sleeve (45) is fixedly installed on the fixing mechanism (2). A damping pad is provided between the annular frame (44) and the ring sleeve (45).

2. The catenary compensator for overhead contact lines according to claim 1, characterized in that, The ratchet (41) is fitted onto the middle of the roller (32). There are two fixing rings (33) and they are respectively set on the rollers (32) on both sides of the ratchet (41). The load-bearing cable and the counterweight cable are respectively wound on the rollers (32) on both sides of the ratchet (41). One end of the load-bearing cable and the counterweight cable are respectively fixed on two adjacent fixing rings (33).

3. A catenary compensator for overhead contact lines according to claim 1, characterized in that, The fixing mechanism (2) includes a column (1) as a support and two arc-shaped plates (21) fastened to the column (1) by bolts, one of which is provided with a bracket (22) for installing the compensator body.

4. A catenary compensator for overhead contact lines according to claim 1, characterized in that, The roller (32) is provided with a spiral groove for winding the load-bearing cable and the counterweight rope.

5. A catenary compensator for overhead contact lines according to claim 1, characterized in that, The fixing mechanism (2) is provided with a protective cover for protecting the compensator body.

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