CN223116221U - Contact network suspension pulley load-bearing cable unloading tension tooling - Google Patents

Abstract

The utility model discloses a tension tool for unloading a carrier cable of a suspension pulley of a contact network, which relates to the technical field of power supply auxiliary devices of contact networks of electrified railways and comprises a base (1), wherein supporting frames (2) are arranged on two sides of the base, a suspension plate (3) used for being arranged under a lifting hook (6) is arranged at the top of one supporting frame, a connector (4) is arranged at the end of the surface of the suspension plate, which faces the other supporting frame (2), a supporting frame connector (5) corresponding to the suspension plate connector is arranged at the top of the other supporting frame (2), an arc top block (8) which is suitable for the radian of the surface of the pulley (7) is arranged in the base (1), the bottom of the arc top block is connected with a lifting mechanism, and compared with the prior art, the utility model has the advantages of 3 minutes of time for replacing a wheel axle, one tenth of the time of the prior art, rapid replacement operation and high working efficiency.

Description

Load-off tension tool for suspension pulley carrier cable of contact net

Technical Field

The utility model relates to the technical field of power supply auxiliary devices of overhead contact systems of electrified railways, in particular to a tension unloading tool for a suspension pulley carrier cable of an overhead contact system.

Background

The suspension pulley is an important component in a contact net system, the contact net consists of an upper line, a lower line and other supporting structures, the line below is called a contact line, and the line above is called a carrier rope. According to the requirements of power supply and machinery, the contact net is divided into a plurality of independent segments, which are called anchor segments, and the carrier ropes and contact wires at two ends of the anchor segments are fixed on the anchor posts directly or through compensators. At the two ends of some anchor segments, the carrier ropes have crossing portions, and at this time, the crossing portions between the two carrier ropes need to be separated by a suspension pulley, and the suspension pulley is generally installed at the crossing portions. The suspension pulley is hung in a supporting device through an axle, the top of the supporting device is a lifting hook and is used for being hung on a bearing rope at the upper part, axle holes are correspondingly formed in the middle of two supporting plates which are vertically arranged at the left side and the right side of the supporting device, the upper part of the axle holes are large and small, the diameter of the upper part of the axle holes is larger than the outer diameter of an axle cover, the diameter of the lower part of the axle holes is smaller than the outer diameter of the axle cover, the tops of the two supporting plates are welded with the lifting hook, the bottom of the two supporting plates is open, the pulley is placed between the two supporting plates, one end of the axle is inserted through the pulley from the large hole at the upper part of the axle hole of the supporting plate at one side and penetrates out from the supporting plate at the other side, after the axle is penetrated, the pulley sinks downwards, the bearing rope can be installed at the lower part of the axle hole through the axle. The existing suspension pulley for a carrier cable is easy to wear or rust on a general pulley shaft, and the pulley shaft wear can cause the following problems:

1. Efficiency is reduced by worn pulley axles which can lead to reduced transmission efficiency. Due to the increase in frictional resistance, more energy is required to achieve the same transmission effect, which increases energy consumption and operating costs.

2. The safety hazards are that the worn wheel axle can cause unbalance and generate vibration and noise, which not only affects the normal operation of the equipment, but also can cause safety threat to the equipment and surrounding staff, and in extreme cases, serious accidents can be caused if the pulley is broken or falls off due to serious wear, thereby causing serious injury to the equipment and staff.

Rust on pulley axles can cause the following problems:

1. The stress condition is changed, namely, the original stress condition can be changed by a rusted wheel shaft, so that the shafting runs abnormally, and the irregular stress change can aggravate irregular damage to the shafting.

2. The damage is aggravated by the possibility that the rusted part may form a perforation, a large area of cracking, peeling and other adverse conditions after the rusting condition is deepened. This will further impair the bearing capacity of the axle, increasing the risk of equipment failure.

Therefore, for worn or rusted axles, timely replacement is required. At present, the tension of a carrier rope reaches 2.5 tons, the tension pressure of the carrier rope on a suspension pulley is 2.5 tons, and the following two methods are generally adopted for replacing a suspension pulley shaft:

1. And (3) unloading 40 balance weights at two ends of one anchor section for 1.4 km, and unloading 2.5 tons of tension force acting on the suspension pulley by the carrier cable to finish replacement.

2. The upper part of the hoist is hung with a soft cross carrier rope, the lower part of the hoist is hung with an upper carrier rope, and the tension of the carrier rope is unloaded.

The two wheel axle replacing modes take about 30 minutes to replace the wheel axle, and have long time and low working efficiency.

Disclosure of utility model

The utility model provides a tension tool for unloading a carrier rope of a suspension pulley of a contact network, which can solve the problems of long time and low working efficiency of the existing pulley shaft replacement mode.

In order to solve the problems, the technical scheme includes that the lifting device comprises a base, wherein supporting frames are arranged on two sides of the base, a hanging plate used for being arranged under a lifting hook is arranged at the top of one supporting frame, a connector is arranged at the end of the hanging plate, which faces the other supporting frame, a supporting frame connector corresponding to the hanging plate connector is arranged at the top of the other supporting frame, an arc jacking block which is matched with the radian of a pulley wheel surface is arranged in the base, and the bottom of the arc jacking block is connected with a lifting mechanism.

In the above technical scheme, the lifting mechanism can be a hydraulic jack, a cylinder body of the hydraulic jack is arranged on the base, and a telescopic rod of the hydraulic jack is connected with the circular arc jacking block.

The lifting mechanism is a spiral screw, a nut seat is arranged on the base, the spiral screw is in threaded connection with the nut seat, the upper end of the spiral screw is connected with the circular arc jacking block through a bearing, the bottom end of the spiral screw extends out of the lower portion of the base, and a rotating handle is sleeved at the bottom end of the spiral screw.

Further, the bottom of one of the supporting frames is hinged with the base side.

Further, a notch is arranged in the middle of the hanging plate.

Further, the middle part of the working surface of the arc top block is provided with a bulge along the length direction, and the bulge is adapted to the wheel groove of the pulley.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

because this tension frock has with hang the suspension board under the pulley strutting arrangement lifting hook that hangs, and be connected with the circular arc kicking block through elevating system on the base of this device, upwards jack up the circular arc kicking block through elevating system, can upwards hold up the pulley, make the pulley shaft get into the macropore from strutting arrangement's aperture, can release the shaft to one side, the new shaft of replacement. The time spent for replacing the wheel axle by the tension tool is 3 minutes, which is one tenth of the replacement time in the prior art, and the replacement operation is quick and the working efficiency is high.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a working state diagram of embodiment 1 of the present utility model.

Fig. 4 is a schematic structural view of embodiment 2 of the present utility model.

Fig. 5 is a left side view of fig. 4.

Description of sequence number:

the device comprises a base 1, a support frame 2, a hanging plate 3, a connector 4, a support frame connector 5, a lifting hook 6, a pulley 7, an arc jacking block 8, a bulge 8-1, a cylinder 9-1, a telescopic rod 9-2, a hydraulic nozzle 9-3, a spiral screw rod 10, a nut seat 11, a rotary handle 12, a screw rod 13 and a wheel shaft 14.

Detailed Description

In order to make the above objects, features and advantages of the present utility model more easily interpretable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in many other ways other than those described herein, and those skilled in the art may make similar modifications without departing from the spirit of the present utility model, so that the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships that are shown in the drawings are given for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiment 1 shown in fig. 1 and 2 comprises a base 1, wherein two sides of the base are provided with supporting frames 2, the top of one supporting frame is provided with a hanging plate 3 arranged below a lifting hook 6, the hanging plate faces to the end of the other supporting frame, the connecting head is a connecting through hole fixed in the middle of the end head of the hanging plate, the middle of the hanging plate 3 is provided with a notch clamped around the lifting hook 6, two sides of the end head of the other supporting frame 2 are provided with supporting frame connectors 5 corresponding to the connecting heads of the hanging plate, the supporting rod connectors are connecting through holes, after the three connecting through holes are aligned, a supporting frame can be fixed by inserting a screw 13, the bottom of the supporting frame is hinged with the side of the base 1 through a hinge shaft, an arc jacking block 8 matched with the radian of a pulley 7 is arranged in the base 1, the bottom of the arc jacking block is connected with a lifting mechanism, the middle of the working surface of the arc jacking block 8 is provided with a bulge 8-1 along the length direction, the bulge is matched with a pulley 7, the lifting mechanism is a hydraulic jack, a cylinder 9-1 of the hydraulic jack is arranged on the base 1, the telescopic rod 9-2 of the hydraulic jack is connected with the jack 8-a hydraulic jack, and the hydraulic jack is arranged on one side of the hydraulic jack 9.

The embodiment can adopt an LHMI-5 type jack type mini hydraulic jack.

When the tension tool is used, the support frame on one side of the tension tool is outwards opened, the notch of the hanging plate on the top of the other support frame is placed against the lifting hook, the hanging plate can be hung on the existing supporting device, the opened support frame on the side is folded, after the connecting through holes of the two support frames are aligned, the support frames can be fixed by inserting the screw rod, the hydraulic jack is started, the circular arc jacking block is upwards lifted, the protrusions of the circular arc jacking block are clamped into the wheel grooves of the wheel faces of the pulleys, the pulleys are protruded, the wheel shafts of the pulleys enter the large holes from the small holes of the supporting plate of the supporting device, the jack stops, at the moment, the wheel shafts are knocked out, new wheel shafts are inserted into the pulley holes, the wheel shafts are replaced, the jack is started, the lifting rods of the jack downwards move, the pulleys downwards sink, the wheel shafts enter the small holes, and the tension tool is detached. The wheel axle is convenient and quick to disassemble and assemble, less in time consumption and high in working efficiency.

The embodiment 2 shown in fig. 4 and 5 comprises a base 1, wherein two sides of the base are provided with supporting frames 2, the top of one supporting frame is provided with a hanging plate 3 which is arranged under a lifting hook 6, the hanging plate faces the end of the other supporting frame, the connecting head is a connecting through hole which is fixed in the middle of the end head of the hanging plate, the middle of the hanging plate 3 is provided with a notch which is clamped around the lifting hook 6, two sides of the end head of the top of the other supporting frame 2 are provided with supporting frame connectors 5 which correspond to the connecting heads of the hanging plate, the supporting frame connectors are connecting through holes, after the three connecting through holes are aligned, a screw 13 is inserted, the supporting frame can be fixed, the bottom of the supporting frame is hinged with the side of the base 1 through a hinge shaft, an arc jacking block 8 which is suitable for the radian of the wheel surface of a pulley 7 is arranged in the base 1, the bottom of the arc jacking block is connected with a lifting mechanism, the middle of the working surface of the arc jacking block 8-1 is provided with a bulge 8-1 along the length direction, the bulge is suitable for a spiral screw rod 10, the lifting mechanism is provided with a nut seat 11 on the base 1, the spiral screw rod 10 is screwed in the nut seat 11, the upper end of the spiral screw rod is connected with the spiral rod through the spiral jacking block, the spiral rod through the bearing 8, the spiral rod is connected with the spiral rod 7, the bottom end of the spiral rod is rotatably connected with the spiral rod 1, and the spiral rod is rotatably sleeved with the bottom end 12, and the spiral rod is downwards upwards extends downwards from the bottom of the spiral rod through the spiral handle 12.

The tension tool is small in size, light in weight and convenient to carry.

Claims (6)

1. The utility model provides a contact net suspension pulley carrier cable uninstallation tension frock, its characterized in that includes base (1), and this base both sides are equipped with support frame (2), and the top of one of them support frame is equipped with and is used for adorning suspension board (3) under lifting hook (6), and this suspension board face is equipped with connector (4) towards the end of another support frame (2), and the top of another support frame (2) be equipped with support frame connector (5) corresponding with suspension board connector, be equipped with in base (1) with the circular arc kicking block (8) that the wheel face radian suited of pulley (7), the bottom and the elevating system of this circular arc kicking block are connected.

2. The overhead contact system suspension pulley carrier cable unloading tension tool according to claim 1 is characterized in that the lifting mechanism is a hydraulic jack, a cylinder body (9-1) of the hydraulic jack is arranged on the base (1), and a telescopic rod (9-2) of the hydraulic jack is connected with the circular arc jacking block (8).

3. The overhead line system suspension pulley carrier cable unloading tension tool according to claim 1, wherein the lifting mechanism is a spiral screw (10), a nut seat (11) is arranged on the base (1), the spiral screw (10) is in threaded connection with the nut seat (11), the upper end of the spiral screw is connected with the circular arc top block (8) through a bearing, the bottom end of the spiral screw (10) extends out from the lower portion of the base (1), and a rotating handle (12) is sleeved at the bottom end of the spiral screw.

4. The overhead contact system hanging pulley carrier cable unloading tension tool according to claim 1, 2 or 3 is characterized in that the bottom of one supporting frame (2) is hinged with one side of the base (1).

5. The overhead line system suspension pulley carrier cable unloading tension tool of claim 4 is characterized in that a notch is arranged in the middle of the suspension plate (3).

6. The overhead line system suspension pulley carrier cable unloading tension tool according to claim 5, wherein the middle part of the working surface of the arc top block (8) is provided with a bulge (8-1) along the length direction, and the bulge is adapted to a pulley groove of the pulley (7).