CN111864635A - Multi-roller combined spanning device - Google Patents

Abstract

The invention relates to a multi-roller combined crossing device which comprises fixing plates, two cross arm large rollers, two cross arm small rollers and roller shafts, wherein the fixing plates are longitudinally arranged and symmetrically arranged along the horizontal direction, the two cross arm large rollers, the two cross arm small rollers and the roller shafts are arranged between the two fixing plates at intervals, the cross arm large rollers, the two cross arm small rollers and the roller shafts are arranged in parallel along the horizontal direction, one cross arm small roller is arranged below one longitudinal side of each cross arm large roller, the roller shafts are arranged below the cross arm small rollers and arranged in a collinear manner along the vertical direction, the other cross arm small roller is arranged on one longitudinal side of each roller shaft, and the cross arm small rollers are also arranged below the cross arm large rollers. The device has great significance for crossing net sealing construction operation, greatly shortens net sealing time, furthest reduces the danger of high-altitude operation personnel, improves the overall stability, can be repeatedly utilized, and has good safety, economy and comprehensive benefits.

Description

Multi-roller combined spanning device

technical field

The invention relates to the field of power transmission equipment, in particular to a multi-roller combined spanning device.

Background technique

During the construction of transmission lines, when crossing important objects (such as live lines, high-speed, railways, etc.), it is necessary to set up a crossing frame, and use insulating rods and insulating ropes to seal the net to protect the objects being crossed. The netting rope is anchored to the ground through a spanning frame or a temporary cross arm. As shown in Figure 1.

The traditional closed net cross-arm, after hoisting the pole and tower, needs to be suspended under the beam with a common pulley, which is used to suspend the supporting rope and the net rope. There are the following construction difficulties: First, it is time-consuming and laborious for the construction personnel to hang the pulley, and the risk factor is high; second, the fake crossarm has no special hanging point for the pulley, so there is a risk of the pulley falling off; third, when installing the sealing rope and insulating rod , and must also stand on the supporting rope under the cross arm, it is easy to lose the balance of the aerial workers, the safety risk is high, and the construction is difficult; fourth, in the case of strong winds, the pulley swings with the mesh, and there are ropes from the grooves and meshes. Risk of falling off. As shown in Figure 2, it is a schematic diagram of a traditional false cross-arm sealing net.

Through searching, no patent publications related to the patent application of the present invention have been found.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-roller combined spanning device, which is suitable for cross-section holding poles of various specifications, can make full use of the original holding poles, and achieves diversified application sizes , reduce investment and facilitate installation.

The present invention solves its technical problem by adopting the following technical solutions to realize:

A multi-roller combined spanning device, the device comprises a fixed plate, a large cross-arm roller, two small cross-arm rollers and a roller shaft, the fixed plates are arranged longitudinally and two are symmetrically arranged along the horizontal direction, A large cross-arm roller, two small cross-arm rollers and roller shafts are arranged at intervals between the two fixed plates, and the large cross-arm roller, the two small cross-arm rollers and the roller axes are arranged in parallel along the horizontal direction. A small cross-arm roller is arranged under the longitudinal side of the large cross-arm roller, and a roller shaft is arranged below the small cross-arm roller, and the two are arranged in the vertical direction. A small cross-arm roller, the small cross-arm roller is also arranged below the large cross-arm roller, and the small cross-arm roller and the large cross-arm roller are arranged in a vertical direction;

A load-bearing rope can be arranged on the large roller of the cross arm, and a pulling rope can be arranged on the small roller of the cross arm.

Moreover, two load-bearing ropes, two pull-net ropes and one circulating rope are arranged in the same stage of unfolding, and the five ropes can pass through the multi-roller combined spanning device at the same time.

Moreover, a large roller hole, a roller shaft hole and two small roller holes are provided on both fixed plates, wherein the two small roller holes are arranged diagonally, and the large roller hole and the roller shaft hole are paired The angle line is set, the large cross-arm roller is connected with the fixed plate through two large roller holes, the small cross-arm roller is connected with the fixed plate through the small roller holes, and the roller shaft is connected by the roller The axle hole is connected with the fixing plate.

Moreover, the multi-roller combined spanning device can be assembled with the cross arm and then hoisted as a whole, and the device is suitable for cross-section poles of various specifications.

Moreover, the materials of the fixing plate, the large cross-arm roller, the small cross-arm roller, and the roller shaft are all made of Q345 steel plate.

The advantages and positive effects obtained by the present invention are:

1. The leaping device of the present invention is of great significance to the construction work of spanning and sealing the net, greatly shortens the time of sealing the net, minimizes the danger of high-altitude operators, improves the overall stability, and can be reused, and is safe and economical. Beneficial. It can be applied to railways, high-speed, power lines and other types of spanning objects, and has promotion significance.

2. The spanning device of the present invention reduces the links of the suspension pulley, the rope realizes the operation of "one pull and five", and the work efficiency is greatly improved.

3. The rollers of different specifications of the spanning device of the present invention can decompose the downward pressure of the pulling net rope and the load-bearing rope and the tension along the line, and the force-bearing structure is more reasonable.

4. The installation and removal of the spanning device of the present invention can be carried out on the ground, which is convenient for operation and reduces the safety risk of high-altitude operation in the traditional mode.

5. The stability of the multi-roller combined straddle device of the present invention is better than that of the pulley.

6. The spanning device of the present invention can be equipped with two supporting ropes in the same gear of the exhibition, and five ropes can pass through the multi-roller combined spanning device at the same time when the two pulling net ropes and the circulating ropes are used to realize "one pull and five" one-time operation. Exhibition, reducing the time of opening and releasing the rope, and ensuring the smooth completion of the task of closing the net during the window time; the operation of the aerial workers is simple, and there is no need to lower the car; the pulling rope and the load-bearing rope can directly pass through the rollers; the multi-roller combined type The spanning device can be hoisted as a whole after being assembled with the cross arm, and there is no need to install a pulley. In addition, this device is suitable for cross-section poles of various specifications, and can make full use of the original poles, so as to achieve diversified application sizes, reduce investment and facilitate installation.

Description of drawings

Fig. 1 is the schematic diagram that the temporary cross arm is erected on the transmission line frame in the prior art;

Fig. 2 is the working schematic diagram of hoisting on the pole tower in the prior art;

3 is a schematic diagram of a structural connection of the multi-roller combined spanning device in the present invention (the fixing plate is omitted);

4 is a schematic diagram of the use state of the multi-roller combined spanning device in the present invention;

Fig. 5 is the right side schematic diagram of Fig. 3;

6 is a schematic cross-sectional view of a multi-roller combined spanning device in the present invention;

Fig. 7 is a real photo diagram of the multi-roller combined spanning device of the present invention;

Fig. 8 is a flow chart of comparative development and application of the multi-roller combined spanning device in the present invention before and after improvement.

迪尼玛承力索，7为

绵纶封网拉绳，8为12棉纶循环绳，9为横梁(假横担)，图2中箭头方向为牵引方向，10为横担大滚轮，11为横担小滚轮，12为滚轮轴，13 为承力绳，14为牵网绳，15为固定板。Among them: 1 is a temporary cross arm, 2 is a steel pipe spanning frame, 3 is a load-bearing cable pulley, 4 is a closed net pulling rope pulley, 5 is a glass fiber reinforced plastic insulating rod, and 6 is a

Dyneema Lisso, 7 for

Mianlun sealing net pulling rope, 8 is 12 cotton looping rope, 9 is the beam (false cross arm), the arrow direction in Figure 2 is the pulling direction, 10 is the large cross arm roller, 11 is the cross arm small roller, 12 is the roller The shaft, 13 is the bearing rope, 14 is the pulling net rope, and 15 is the fixing plate.

Detailed ways

The present invention will be described in further detail below in conjunction with specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

The raw materials used in the present invention are conventional commercial products unless otherwise specified; the methods used in the present invention are conventional methods in the art unless otherwise specified.

A multi-roller combined spanning device, as shown in Figures 3 to 7, the device comprises a fixed plate 15, a large cross-arm roller 10, two small cross-arm rollers 11 and a roller shaft 12, the fixed plate It is arranged longitudinally, and two are symmetrically arranged in the horizontal direction. A large cross-arm roller, two small cross-arm rollers and a roller shaft are arranged at intervals between the two fixed plates. The roller shaft can provide supporting force, and the cross-arm large roller The wheel, the two small cross-arm rollers and the roller shafts are arranged in parallel along the horizontal direction, a small cross-arm roller is arranged under the longitudinal side of the large cross-arm roller, and the roller shaft is arranged below the small cross-arm roller. And the two are arranged collinearly along the vertical direction, the longitudinal side of the roller shaft is provided with another small cross-arm roller, and the small cross-arm roller is also arranged below the large cross-arm roller, and the cross-arm small roller is also arranged. The wheel and the large cross arm roller are arranged collinearly in the vertical direction;

A load-bearing rope 13 can be arranged on the large roller of the cross arm, and a pulling rope 14 can be arranged on the small roller of the cross arm.

In this embodiment, two load-bearing ropes, two pull-net ropes and one loop rope are arranged in the same stage of unfolding ropes are used, which need not be specifically shown), and five ropes can pass through the multi-roller combined spanning device at the same time.

In this embodiment, a large roller hole, a roller shaft hole and two small roller holes are provided on both fixed plates, wherein the two small roller holes are arranged diagonally, the large roller hole, the roller The axle holes are arranged diagonally, the large cross-arm roller is connected with the fixed plate through two large roller holes, and the small cross-arm roller is connected with the fixed plate through the small roller holes. The roller shaft is connected with the fixing plate through the roller shaft hole.

In this embodiment, the multi-roller combined spanning device can be hoisted as a whole after being assembled with the cross arm, and this device is suitable for cross-section poles of various specifications.

In this embodiment, the materials of the fixing plate, the large cross-arm roller, the small cross-arm roller, and the roller shaft are all made of Q345 steel plate.

The relevant preparation of the multi-roller combined spanning device can be as follows:

1. Analyze the force direction of the pulley, measure the cross-section of the temporary cross-arm, draw the parts processing drawings, and select the size of the components after the force calculation;

2. Material selection and processing, use Q345 steel plate of the same material as the pole as the fixed plate and roller, and the same material ensures that the pole is evenly stressed;

3. Trial assembly, and proofread the machining holes and the mounting holes;

4. After processing the finished product, after the trial assembly is optimized, the finished product is assembled;

5. Force test, 1.5 times the rated value for force test to ensure no deformation and damage.

It can also be shown in Figure 8.

Although the embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, therefore , the scope of the present invention is not limited to the contents disclosed in the embodiments.

Claims (5)

1. A multi-roller combination type spanning device, characterized in that: the device comprises fixing plates, cross arm large rollers, two cross arm small rollers and roller shafts, wherein the fixing plates are arranged in the longitudinal direction, the two cross arm large rollers, the two cross arm small rollers and the roller shafts are symmetrically arranged in the horizontal direction, the cross arm large rollers, the two cross arm small rollers and the roller shafts are arranged between the two fixing plates at intervals, the cross arm large rollers, the two cross arm small rollers and the roller shafts are arranged in parallel in the horizontal direction, one cross arm small roller is arranged below one longitudinal side of each cross arm large roller, the roller shafts are arranged below the cross arm small rollers and are arranged in a collinear manner in the vertical direction, the other cross arm small roller is arranged on one longitudinal side of each roller shaft, the cross arm small rollers are also arranged below the cross arm large rollers, and the cross arm small rollers and the cross arm large rollers are arranged in a collinear manner in the vertical direction;

the big roller of the cross arm can be provided with a bearing rope, the small roller of the cross arm can be provided with a net pulling rope, and the device forms a same gear for unfolding and folding.

2. The multi-roller combination spanning device of claim 1, wherein: two bearing ropes, two net pulling ropes and a circulating rope are arranged in the same exhibition gear, and five ropes can simultaneously pass through the multi-roller combined crossing device.

3. The multi-roller combination spanning device of claim 1, wherein: all set up a big running roller hole, a running roller shaft hole and two little running roller holes on two fixed plates, wherein two little running roller holes become diagonal setting, and big running roller hole, running roller shaft hole become diagonal setting, the big running roller of cross arm links together with the fixed plate through two big running roller holes, the little running roller of cross arm links together with the fixed plate through little running roller hole, the running roller axle links together with the fixed plate through running roller shaft hole.

4. The multi-roller combination spanning device of claim 1, wherein: the multi-roller combined crossing device can be integrally hoisted after being assembled with the cross arm, and is suitable for various specifications of section holding poles.

5. The multi-roller combination spanning device according to any one of claims 1 to 4, wherein: the fixed plate, the cross arm large roller, the cross arm small roller and the roller shaft are all made of Q345 steel plates.

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