Tension unloading tool for catenary suspension pulley carrier cable

Abstract

The utility model discloses a tension unloading tool for a catenary suspension pulley carrier cable, which relates to the technical field of electrified railway catenary power supply auxiliary devices and comprises a base (1), two sides of the base are provided with support frames (2), the top of one support frame is provided with a suspension plate (3) used for being mounted below a lifting hook (6), and the top of the other support frame is provided with a tension unloading device. A hanging plate (2) is arranged on the base (1), a connector (4) is arranged at the end, facing the other supporting frame (2), of the hanging plate, a supporting frame connector (5) corresponding to the hanging plate connector is arranged on the top of the other supporting frame (2), an arc top block (8) matched with the radian of the wheel face of a pulley (7) is arranged in the base (1), and the bottom of the arc top block is connected with a lifting mechanism. The time for replacing the axle flower is 3 minutes which is one tenth of the time for replacing the axle in the prior art, the replacement operation is quick, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for catenary power supply in electrified railways, in particular to a catenary suspension pulley tension unloading tool for the carrier cable. Background Technique

[0002] The suspension pulley is an important component in the catenary system. The catenary consists of two upper and lower lines and other support structures. The lower line is called the contact wire, and the upper line is called the carrier cable. According to the requirements of power supply and machinery, the catenary is divided into many independent sections, which are called anchor sections. The carrier cables and contact wires at both ends of the anchor section are directly or fixed to the anchor posts through compensators. At both ends of some anchor sections, there will be overlapping parts of the carrier cables. At this time, suspension pulleys are needed to separate the overlapping parts between the two carrier cables, and suspension pulleys are generally installed at the overlapping parts. The suspension pulley is hoisted in the support device through a wheel axle. The top of the support device is a hook for hanging on the upper carrier cable. There are shaft holes corresponding to the middle parts of the two vertical support plates on the left and right sides of the support device. The shaft holes are larger at the top and smaller at the bottom. The diameter of the upper shaft hole is larger than the outer diameter of the wheel axle cover, and the diameter of the lower shaft hole is smaller than the outer diameter of the wheel axle cover. The tops of the two support plates are welded to the hook, and the bottom is open. The pulley is placed between the two support plates. One end of the wheel axle is inserted through the large hole at the upper part of the shaft hole of one side of the support plate, passes through the pulley, and passes out from the other support plate. After the wheel axle is inserted, the pulley sinks downward, and the wheel axle slides into the lower part of the shaft hole to install the suspension pulley. The carrier cable passes through the wheel surface of the suspension pulley. For the existing suspension pulleys for carrier cables, generally, the wheel axles are prone to wear or rust. The wear of the pulley wheel axle will cause the following problems:

[0003] 1. Reduced efficiency: The worn pulley wheel axle will lead to a reduction in transmission efficiency. Due to the increase in frictional resistance, more energy is required to achieve the same transmission effect, which will increase energy consumption and operating costs.

[0004] 2. Safety hazards: The worn wheel axle may cause imbalance, resulting in vibration and noise; this not only affects the normal operation of the equipment but also poses a safety threat to the equipment and the surrounding staff; in extreme cases, if the wear is severe enough to cause the pulley to break or fall off, it may trigger a serious accident, causing major harm to the equipment and personnel.

[0005] The rusting of the pulley wheel axle will cause the following problems:

[0006] 1. Change in force condition: The rusty wheel axle will change the original force condition, resulting in abnormal operation of the shafting. This irregular force change may exacerbate the irregular damage to the shafting.

[0007] 2. Increased damage: After the rusting condition of the rusted part worsens, adverse situations such as perforation, large-area cracking, and peeling may occur. This will further weaken the load-bearing capacity of the axle and increase the risk of equipment failure.

[0008] Therefore, for worn or rusted axles, they need to be replaced in a timely manner. Currently, the tension of the catenary reaches 2.5 tons, and the suspension pulley is under the pressure of the 2.5-ton tension of the catenary. There are usually the following two methods for replacing the suspension pulley axle:

[0009] 1. By unloading 1.4 kilometers of an anchor section and 40 counterweights at both ends, the 2.5-ton tension of the catenary acting on the suspension pulley is removed to complete the replacement.

[0010] 2. Use a hoist. Hang the upper part of the hoist on the soft catenary support and the lower part of the hoist on the upper catenary to unload the catenary tension.

[0011] For the above two methods of replacing the axle, the time taken to replace the axle is about 30 minutes, which is time-consuming and has low work efficiency. Utility Model Content

[0012] The present utility model provides a catenary suspension pulley catenary tension unloading tooling, which can solve the problems of long time and low work efficiency in the existing pulley axle replacement methods.

[0013] To solve the above problems, the technical solution adopted by the present utility model is: It includes a base, and both sides of the base are provided with support frames. The top of one of the support frames is provided with a suspension plate for being installed under a hook. The end of the suspension plate facing the other support frame is provided with a connection head, and the top of the other support frame is provided with a support frame connection head corresponding to the connection head of the suspension plate. The base is internally provided with an arc top block adapted to the arc of the pulley wheel surface, and the bottom of the arc top block is connected to a lifting mechanism.

[0014] In the above technical solution, a more specific solution can also be: The lifting mechanism is a hydraulic jack. The cylinder body of the hydraulic jack is installed on the base, and the telescopic rod of the hydraulic jack is connected to the arc top block.

[0015] Furthermore: The lifting mechanism is a screw rod. A nut seat is provided on the base, the screw rod is screwed in the nut seat, the upper end of the screw rod is connected to the arc top block through a bearing, the bottom end of the screw rod extends out from under the base, and a rotating handle is sleeved on the bottom end of the screw rod.

[0016] Furthermore: The bottom of one of the support frames is hinged to the side of the base.

[0017] Furthermore: A notch is provided in the middle of the suspension plate.

[0018] Further: A convexity is provided along the length direction in the middle of the working surface of the arc top block, and the convexity is adapted to the wheel groove of the pulley.

[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0020] Since this tension tooling has a suspension plate suspended under the hook of the suspension pulley support device, and the base of this device is connected to the arc top block through a lifting mechanism. By lifting the arc top block upward through the lifting mechanism, the pulley can be lifted upward, enabling the pulley shaft to enter the large hole from the small hole of the support device, and then the wheel shaft can be pushed to one side to replace the new wheel shaft. It takes 3 minutes to replace the wheel shaft with this tension tooling, which is one-tenth of the replacement time of the prior art. The replacement operation is fast and the work efficiency is high. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of Embodiment 1 of the utility model.

[0022] Figure 2 is Figure 1 the left view of

[0023] Figure 3 It is a working state diagram of Embodiment 1 of the utility model.

[0024] Figure 4 It is a schematic structural diagram of Embodiment 2 of the utility model.

[0025] Figure 5 is Figure 4 the left side view of

[0026] Serial Number Explanation:

[0027] Base 1, support frame 2, suspension plate 3, connection head 4, support frame connection head 5, hook 6, pulley 7, arc top block 8, convexity 8-1, cylinder block 9-1, telescopic rod 9-2, hydraulic nozzle 9-3, screw rod 10, nut seat 11, rotating handle 12, screw 13, wheel shaft 14. Detailed Implementation Modes

[0028] In order to make the above objects, features, and advantages of the utility model easier to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Many specific details are set forth in the following description in order to fully understand the utility model, but the utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0030] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] As Figure 1 and Figure 2 Shown in Embodiment 1, it includes a base 1. Support frames 2 are provided on both sides of the base. A suspension plate 3 for being installed under a hook 6 is provided at the top of one of the support frames. A connection head 4 is provided at the end of the suspension plate facing the other support frame. The connection head is a connection through hole fixed in the middle of the end of the suspension plate. A notch is provided in the middle of the suspension plate 3, and the notch is stuck around the hook 6; on both sides of the top end of the other support frame 2, there are support frame connection heads 5 corresponding to the connection head of the suspension plate. The support rod connection head is a connection through hole. After the three connection through holes are aligned, a screw rod 13 is inserted to fix the support frame. The bottom of this support frame is hinged to the side of the base 1 through a hinge shaft; an arc top block 8 adapted to the arc surface radian of a pulley 7 is provided inside the base 1. The bottom of the arc top block is connected to a lifting mechanism. A protrusion 8-1 is provided in the middle of the working surface of the arc top block 8 along the length direction, and the protrusion is adapted to the groove of the pulley 7; the lifting mechanism is a hydraulic jack. The cylinder body 9-1 of the hydraulic jack is installed on the base 1. The telescopic rod 9-2 of the hydraulic jack is connected to the arc top block 8. The hydraulic nozzle 9-3 of the hydraulic jack is installed on one side of the cylinder body.

[0032] This embodiment can adopt the LHMI-5 type Longsheng mini hydraulic jack.

[0033] In use, open the support frame on one side of this tension tooling outward, place the notch of the suspension plate at the top of the other support frame facing the hook, and the suspension plate can be suspended on the existing support device. Then close the support frame on the opened side. After the connection through holes of the two support frames are aligned, insert a screw rod to fix the support frame. Start the hydraulic jack, and the arc top block rises upward. The protrusion of the arc top block is stuck into the groove on the pulley surface, lifting the pulley. The wheel axle of the pulley enters the large hole from the small hole in the support plate of the support device. Stop the jack. At this time, knock out the wheel axle to one side, insert a new wheel axle into the pulley hole, and the wheel axle replacement is completed. Start the jack, the lifting rod of the jack moves downward, the pulley sinks downward, and the wheel axle enters the small hole. Remove this tension tooling to complete this work. The disassembly and assembly of the wheel axle are convenient and fast, taking less time and having high work efficiency.

[0034] As Figure 4 and Figure 5 Shown in Embodiment 2, it includes a base 1. Support frames 2 are provided on both sides of the base. A suspension plate 3 for being installed under the hook 6 is provided at the top of one of the support frames. A connection head 4 is provided at the end of the suspension plate facing the other support frame. The connection head is a connection through hole fixed in the middle of the end of the suspension plate. A notch is provided in the middle of the suspension plate 3, and the notch is stuck around the hook 6. On both sides of the top end of the other support frame 2, there are support frame connection heads 5 corresponding to the connection head of the suspension plate. The support rod connection head is a connection through hole. After the three connection through holes are aligned, insert a screw rod 13 to fix the support frame. The bottom of this support frame is hinged to the side of the base 1 through a hinge shaft. An arc top block 8 adapted to the radian of the pulley 7 surface is provided in the base 1. The bottom of the arc top block is connected to the lifting mechanism. A protrusion 8-1 is provided in the middle of the working surface of the arc top block 8 along the length direction. The protrusion is adapted to the groove of the pulley 7. The lifting mechanism is a screw rod 10. A nut seat 11 is provided on the base 1. The screw rod 10 is screwed in the nut seat 11. The upper end of the screw rod is connected to the arc top block 8 through a bearing. The bottom end of the screw rod 10 extends out from under the base 1. A rotating handle 12 is sleeved on the bottom end of the screw rod. By rotating the rotating handle, the screw rod can be rotated left and right to push the arc top block upward or downward.

[0035] This tension tooling is small in volume and light in weight, making it convenient to carry around.

Claims

1. A catenary suspension pulley and messenger wire unloading tension tooling, characterized in that: It includes a base (1), with support frames (2) provided on both sides of the base. A suspension plate (3) for being installed under a lifting hook (6) is provided at the top of one of the support frames. A connecting head (4) is provided at the end of the suspension plate facing the other support frame (2). A support frame connecting head (5) corresponding to the connecting head of the suspension plate is provided at the top of the other support frame (2). An arc-shaped top block (8) adapted to the arc surface curvature of a pulley (7) is provided inside the base (1), and the bottom of the arc-shaped top block is connected to a lifting mechanism.

2. The catenary suspension pulley and messenger wire unloading tension tooling according to claim 1, characterized in that: The lifting mechanism is a hydraulic jack. The cylinder body (9-1) of the hydraulic jack is installed on the base (1), and the telescopic rod (9-2) of the hydraulic jack is connected to the arc-shaped top block (8).

3. The catenary suspension pulley and messenger wire unloading tension tooling according to claim 1, characterized in that: The lifting mechanism is a screw rod (10). A nut seat (11) is provided on the base (1). The screw rod (10) is screwed inside the nut seat (11). The upper end of the screw rod is connected to the arc-shaped top block (8) through a bearing. The bottom end of the screw rod (10) extends out from under the base (1), and a rotating handle (12) is sleeved on the bottom end of the screw rod.

4. The catenary suspension pulley and messenger wire unloading tension tooling according to claim 1 or 2 or 3, characterized in that: The bottom of one of the support frames (2) is hinged to one side of the base (1).

5. The catenary suspension pulley and messenger wire unloading tension tooling according to claim 4, characterized in that: A notch is provided in the middle of the suspension plate (3).

6. The catenary suspension pulley and messenger wire unloading tension tooling according to claim 5, characterized in that: A protrusion (8-1) is provided along the length direction in the middle of the working surface of the arc-shaped top block (8), and the protrusion is adapted to the groove of the pulley (7).

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