CN216613811U - Portable hoisting device of pole transformer - Google Patents

Abstract

The utility model provides a portable lifting device for an on-pole transformer, which is arranged on an electric pole through a fixed connecting part, takes the electric pole as a supporting point, a triangular stable steel frame formed by a suspension arm, a supporting shaft and a first vertical shaft as a stress device, depends on a pulley block, a steel rope, a hand winch and a lifting hook as a transmission device, takes a steering bearing and an insulating rope as steering devices, and the steering bearing is matched with the insulating rope on two sides of the transformer, so that the steering of the transformer in the lifting process is realized, and steel with light material and good force bearing effect is selected, so that the portable lifting device is more convenient to carry by adopting a combined installation mode.

Description

Portable hoisting device of pole transformer

Technical Field

The utility model relates to the field of hoisting of power equipment, in particular to a portable hoisting device for a pole-mounted transformer.

Background

In the installation engineering of electrical equipment, transformer installation is an indispensable content, because transformer is bulky, weight is heavy, transformer hoist and mount often regard as an important point of electrical equipment installation, have when carrying out the hoist and mount operation to the transformer with long, the recruitment is many, with big, factor of safety low grade problem of investment.

At present, the common transformer installation is completed by the aid of tools such as a crane and a chain block, but the installation tools are more, the size is larger, the carrying is inconvenient, particularly, the crane is too high in cost and inconvenient to use in mountainous areas and narrow places where the crane is inconvenient to use or the installation and the disassembly of a single transformer, and the simple hoisting device always has the problem of insufficient use strength, so that the transformer with heavier weight cannot be hoisted. Therefore, a hoisting tool which is small, light, convenient to transport, beneficial to installation, safe and reliable is urgently needed to hoist the transformer on the electric pole.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a portable lifting device for an on-pole transformer, which is arranged on an electric pole through a fixed connecting part, takes the electric pole as a supporting point, a triangular stable steel frame formed by a suspension arm, a supporting shaft and a first vertical shaft as a stress device, relies on a pulley block, a steel rope, a hand winch and a lifting hook as a transmission device, takes a steering bearing and an insulating rope as a steering device, and the steering bearing is matched with the insulating rope on two sides of the transformer, so that the steering of the transformer in the lifting process is realized, and the steel with light material and good bearing effect is selected.

In order to achieve the above purpose, the utility model comprises the following concrete contents:

a portable hoisting device of an on-pole transformer is used for being installed on an electric pole to hoist the transformer, the electric pole comprises a left electric pole and a right electric pole, and transformer brackets for placing the transformer are transversely erected in the middle sections of the left electric pole and the right electric pole; comprises a stress part, a fixed connecting part, a transmission part and a steering part;

the fixed connecting part comprises a second vertical shaft and a fixed connecting piece;

the second vertical shaft is connected with the left electric pole or the right electric pole through a fixed connecting piece;

the stress part comprises a suspension arm, a support shaft and a first vertical shaft; the suspension arm is connected to the first vertical shaft; one end of the support shaft is connected with the first vertical shaft, and the other end of the support shaft is detachably connected with the suspension arm and is in a triangular structure with the suspension arm and the first vertical shaft (3);

the steering part comprises a steering bearing and an insulating rope;

the first vertical shaft is rotatably connected with the second vertical shaft through a steering bearing; the insulating ropes are arranged on two sides of the transformer to be hoisted;

the transmission part comprises a fixed shaft, a hand winch, a hook, a steel rope, a first pulley, a second pulley and a third pulley (a pulley;

the hand winch is fixed at the lower end of the other electric pole through a fixed connecting piece;

the first pulley is arranged on the supporting shaft;

the fixed shaft is connected to the top end of the first vertical shaft; the second pulley is arranged at the middle section of the fixed shaft;

the third pulley is arranged at the front section of the suspension arm;

the steel rope is sequentially connected with a hand winch, a first pulley, a second pulley and a third pulley to form a transmission structure;

the top end of the lifting hook is connected with the front section of the steel rope penetrating through the third pulley, and the bottom end of the lifting hook is connected with a transformer to be hoisted.

In order to better implement the utility model, further, the lifting hook comprises a lifting hook unfolding component, a connecting rod, a tight connection assembly, a fixed block and a lifting hook connection assembly; the lifting hook unfolding component is arranged at the top end of the connecting rod, the tight connecting component is arranged on the outer wall of the middle part of the connecting rod, the fixed block is connected to the bottom end of the connecting rod, and the lifting hook component is fixed; is connected below the fixed block;

the lifting hook is connected with the steel rope through a lifting hook unfolding component.

In order to better realize the utility model, further, a plurality of small holes are arranged on the suspension arm;

the supporting shaft is detachably connected with the suspension arm through a small hole.

In order to better implement the utility model, further, the diameter of the small hole is 16mm or 14 mm.

In order to better implement the present invention, further, the hand winch is a bidirectional self-locking winch.

In order to better implement the utility model, further, the fixed connecting part comprises a hoop, a penetrating screw and M iron.

In order to better implement the present invention, further, the first pulley, the second pulley, and the third pulley are V-shaped pulleys.

In order to better implement the utility model, further, the steering bearing is a low-speed deep hook ball bearing.

To better implement the utility model, further, said steel cord is provided with a plurality of strands.

The utility model has the following beneficial effects:

1. the power failure time is shortened, and the power failure range is narrowed. When the portable hoisting device of the transformer on the pole is not used for rush repair operation after the transformer fails, a 10kV line needs to be completely stopped or sectionally stopped, and after the portable hoisting device of the transformer on the pole is used, the power failure operation of a single station area can be realized on the premise of ensuring the safety distance.

2. Saving manpower, material resources and financial resources. The portable hoisting device hoisting equipment of the transformer on the pole does not need 6 persons for carrying, and the equipment can be carried by one person. When the portable hoisting device of pole-mounted transformer is applied in mountainous areas, the carrying labor is reduced by 5 persons, the carrying labor is reduced by about 1 hour each time, the carrying labor cost is reduced by 1000 yuan, the hoisting operation labor is reduced by 5 persons, and the hoisting cost is reduced by 1000 yuan.

3. The material is saved. The self weight of the traditional hoisting equipment is about 250 kilograms, and the portable hoisting device of the transformer on the pole controls the self weight to be about 75 kilograms. The length of the traditional hoisting equipment is generally 5-10 meters, and the length of the portable hoisting device of the transformer on the pole is controlled within 1.3 meters. The conventional hoisting equipment is too long and inflexible to turn, and the portable hoisting device for the pole-mounted transformer shortens the length of the equipment, so that the equipment is convenient to carry and flexible and can perform as flat as in mountainous areas.

Drawings

FIG. 1 is an overall structural view of the present utility model;

FIG. 2 is a view of the novel hook of the present invention;

the lifting device comprises a lifting arm 1, a lifting arm 2, a supporting shaft 3, a first vertical shaft 4, a second vertical shaft 5, a fixed shaft 6, a hand winch 7, a lifting hook 71, a lifting hook unfolding component 72, a connecting rod 73, a tight connecting assembly 74, a fixed block 75, a lifting hook connecting assembly 8, a hoop 9, a penetrating screw rod 10, a steel rope 11, a steering bearing 12, a first pulley 13, a second pulley 14, a third pulley 15 and a small hole.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, and therefore should not be considered as limiting the scope of protection. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

the embodiment provides a portable hoisting device for an on-pole transformer, which is used for hoisting the transformer by being installed on an electric pole, wherein the electric pole comprises a left electric pole and a right electric pole, and transformer brackets for placing the transformer are transversely erected in the middle sections of the left electric pole and the right electric pole; as shown in fig. 1, the device comprises a force-bearing part, a fixed connecting part, a transmission part and a steering part;

the fixed connecting part comprises a second vertical shaft 4 and a fixed connecting piece;

the second vertical shaft 4 is connected with the left electric pole or the right electric pole through a fixed connecting piece;

the stress part comprises a suspension arm 1, a support shaft 2 and a first vertical shaft 3; the suspension arm 1 is connected to a first vertical shaft 3; one end of the support shaft 2 is connected with the first vertical shaft 3, the other end of the support shaft is detachably connected with the suspension arm 1, and the support shaft, the suspension arm 1 and the first vertical shaft 3 are in a triangular structure;

the steering part comprises a steering bearing 11 and an insulating rope;

the first vertical shaft 3 is rotatably connected with the second vertical shaft 4 through a steering bearing 11; the insulating ropes are arranged on two sides of the transformer to be hoisted;

the transmission part comprises a fixed shaft 5, a hand winch 6, a lifting hook 7, a steel rope 10, a first pulley 12, a second pulley 13 and a third pulley 14;

the hand winch 6 is fixed at the lower end of the other electric pole through a fixed connecting piece;

the first pulley 12 is arranged on the supporting shaft 2;

the fixed shaft 5 is connected to the top end of the first vertical shaft 3; the second pulley 13 is arranged in the middle section of the fixed shaft 5;

the third pulley 14 is arranged at the front section of the suspension arm 1;

the steel rope 10 is sequentially connected with a hand winch 6, a first pulley 12, a second pulley 13 and a third pulley 14 to form a transmission structure;

the top end of the lifting hook 7 is connected with the front section of the steel rope 10 passing through the third pulley 14, and the bottom end of the lifting hook is connected with a transformer to be hoisted.

The working principle is as follows: the utility model is arranged on the electric pole, and the main stress point is at the installation position of the electric pole, so that the safety analysis must be carried out on the electric pole before the electric pole is hoisted, and the electric pole capable of being used for hoisting operation under the condition of meeting the safety condition is selected. At first need develop visual inspection to the pole, whether the inspection pole inclines, whether guy pole basis is firm, the pole body has or not violently, vertical crackle, develop the feasibility analysis according to the pole parameter again. The table of the parameters of the conventional electric pole is shown in table 1.

TABLE 1 parameter table for common electric pole

This embodiment is for hoisting the transformer on the fixed plate that sets up between two poles, and at the in-process of installation, at first install each fixed connection spare with fixed connection portion on the pole, then will install fixed connection spare well and be connected with second vertical axis 4, will treat the transformer connection of hoist and mount at last on lifting hook 7, accomplish the installation of the portable hoist device of transformer on the pole.

In the process of hoisting, one person stirs the rotation of the hand winch 6, the steel rope 10 is driven to shrink and wind on the hand winch 6 by the rotation of the hand winch 6, the transformer is hoisted upwards, because the transformer has larger volume, the fixed plate between two electric poles is easily touched in the hoisting process, the position of the transformer needs to be continuously adjusted in the hoisting process, the first vertical shaft 3 can be rotatably connected with the second vertical shaft 4 by utilizing the steering bearing 11 arranged between the second vertical shaft 4 and the first vertical shaft 3, the fixed shaft 5 on the first vertical shaft 3, the suspension arm 1 and the support shaft 2 are driven to rotate by the rotation of the first vertical shaft 3, two insulating ropes are arranged on two sides of the transformer, the insulating ropes are pulled by two other persons standing on the two sides of the transformer left and right, the position of the transformer is continuously adjusted, and the steering of the transformer in the hoisting process is realized, and hoisting the transformer after the operation is finished.

When the materials of the devices are selected, the selection principle is light weight, good strength, corrosion resistance and low economic investment. Through research on the demands of field construction operators and selection and comparison of existing circulating materials in the market, seamless steel pipes made of angle steel and alloy steel made of low-carbon alloy steel Q235 materials are selected from aluminum alloy, free-cutting structural steel, carbon steel, silicon steel, stainless steel and alloy steel. The selection of materials and experimental procedures and results are shown in table 2.

TABLE 2 angle steel and aluminium alloy bearing contrast table

Example 2:

in this embodiment, on the basis of any one of the above embodiments 1, as shown in fig. 2, the hook 7 includes a connecting rod 72, a fixed block 74, a hook unfolding member 71, a tight connection assembly 73, and a hook connection assembly 75;

the hook unfolding component 71 is arranged at the top end of the connecting rod, the tight connection assembly 73 is arranged on the outer wall of the middle part of the connecting rod 72, the fixed block 74 is welded at the bottom end of the connecting rod 72, and the hook connection assembly 75 is arranged below the fixed block 74;

the hook 7 is connected to the steel rope 10 through a hook expanding member 71.

The working principle is as follows: because the transformer is bulky, heavy, there is great potential safety hazard in the ordinary lifting hook of adoption in the hoist and mount process, when setting up lifting hook expansion member 71 and lifting hook coupling assembling 75 and make things convenient for the dismantlement and the installation of transformer, reduced the installation accident because of the problem of lifting hook 7 causes.

Other parts of this embodiment are the same as any of embodiments 1-2 described above, and thus are not described again.

Example 3:

in this embodiment, on the basis of any one of the above embodiments 1-2, as shown in fig. 1, the hand winch 6 is a bidirectional self-locking winch.

The working principle is as follows: when the weight of the lifted heavy object is more than 200kg, the safety lifting cannot be satisfied due to gravity by manually lifting the heavy object under the same condition. The two-way self-locking winch can meet the safety requirement when lifting heavy objects, so the two-way self-locking winch is selected to be the best, and the experimental process is shown in table 3.

TABLE 3 bearing comparison table for common capstan and bidirectional self-locking capstan

Other parts of this embodiment are the same as any of embodiments 1-2 described above, and thus are not described again.

Example 4:

in this embodiment, on the basis of any one of the above embodiments 1 to 3, the fixing connector includes an anchor ear 8, a through screw 9, and M iron.

The working principle is as follows: through setting up staple bolt 8 in the pole outside to set up cross-core screw rod 9 on the pole, adopt the outer staple bolt cooperation of pole to pull the screw rod cross-core and consolidate, make the portable hoist device of transformer more firm the installing on the pole.

Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.

Example 5:

in this embodiment, on the basis of any one of embodiments 1 to 4, the first pulley 12, the second pulley 13, and the third pulley 14 are V-shaped pulleys.

The working principle is as follows: through the heavy object of lifting by crane and the destructive power experiment under the same condition, two kinds of pulleys of V type pulley and U type pulley all satisfy the requirement, nevertheless in the pulley slope lifts by crane the experiment, and the steadiness of V type pulley is better than U type pulley, and under the comprehensive consideration, it is better to select for use V type pulley. The material comparison experiment is carried out by quality detection, destructive force experiment and the lifting of heavy objects under different inclination angles of the pulleys, and the experimental process and the result are shown in table 4.

TABLE 4 comparison table for experiment of V-shaped pulley and U-shaped pulley

Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.

Example 6:

in this embodiment, on the basis of any one of embodiments 1 to 5, the second pulley 13 and the third pulley 14 are 3T pulleys; the first pulley 12 is a 2T pulley.

Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.

Example 7:

this embodiment is based on any of embodiments 1 to 6 above, wherein the steering bearing 11 is a low-speed deep hook ball bearing.

The working principle is as follows: the deep groove ball bearing has small friction resistance and high rotating speed, can be used on a machine member bearing radial load or combined load acted simultaneously in the radial direction and the axial direction, and can also be used on a machine member bearing axial load. When it is subjected to only radial loads, the contact angle is zero. When the deep groove ball bearing has larger radial play, the deep groove ball bearing has the performance of an angular contact bearing, can bear larger axial load, has small friction coefficient and high limit rotating speed. Deep groove ball bearings are used primarily to carry radial loads, but are also commonly used to carry combined radial and axial loads. Especially, when the rotating speed of mechanical equipment is very high and a thrust bearing is not suitable to be adopted, the bearing can be used for bearing bidirectional pure axial load, and the maintenance is not needed during the working period, so that the bearing is low in price and wide in application.

Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.

Example 8:

this embodiment is based on any of the above embodiments 1 to 7, the steel cord 10 is provided as a plurality of strands.

The working principle is as follows: the multi-strand steel rope is selected finally because the hoisting weight and the abrasion degree of the multi-strand steel rope are better than those of the single-strand steel rope through the hoisting weight and the destructive force test under the same conditions, and the experimental process and the results are shown in table 4.

Table 4 comparison table for single steel rope and multi-strand steel rope experiment

Other parts of this embodiment are the same as any of embodiments 1 to 7, and thus are not described again.

Example 9:

in this embodiment, on the basis of any one of the above embodiments 1 to 8, the suspension arm 1 is provided with a plurality of small holes 15;

the supporting shaft 2 is detachably connected with the suspension arm 1 through small holes 15 at different positions.

The working principle is as follows: through set up a plurality of apertures 15 on davit 1, back shaft 2 is connected with aperture 15 detachably on davit 1, can satisfy the installation of the transformer of different size different mounted positions.

Other parts of this embodiment are the same as any of embodiments 1 to 8, and thus are not described again.

Example 10:

this embodiment is based on any of the embodiments 1 to 8, wherein the diameter of the small hole 15 is 16mm or 14 mm.

Other parts of this embodiment are the same as any of embodiments 1 to 8, and thus are not described again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (9)

1. A portable hoisting device of an on-pole transformer is used for being installed on an electric pole to hoist the transformer, the electric pole comprises a left electric pole and a right electric pole, and transformer brackets for placing the transformer are transversely erected in the middle sections of the left electric pole and the right electric pole; the device is characterized by comprising a stress part, a fixed connecting part, a transmission part and a steering part;

the fixed connecting part comprises a second vertical shaft (4) and a fixed connecting piece;

the second vertical shaft (4) is connected with the left electric pole or the right electric pole through a fixed connecting piece;

the stress part comprises a suspension arm (1), a support shaft (2) and a first vertical shaft (3); the suspension arm (1) is connected to the first vertical shaft (3); one end of the supporting shaft (2) is connected with the first vertical shaft (3), the other end of the supporting shaft is detachably connected with the suspension arm (1), and the supporting shaft, the suspension arm (1) and the first vertical shaft (3) are in a triangular structure;

the steering part comprises a steering bearing (11) and an insulating rope;

the first vertical shaft (3) is rotatably connected with the second vertical shaft (4) through a steering bearing (11); the insulating ropes are arranged on two sides of the transformer to be hoisted;

the transmission part comprises a fixed shaft (5), a hand winch (6), a lifting hook (7), a steel rope (10), a first pulley (12), a second pulley (13) and a third pulley (14);

the hand winch (6) is fixed at the lower end of the other electric pole through a fixed connecting piece;

the first pulley (12) is arranged on the supporting shaft (2);

the fixed shaft (5) is connected to the top end of the first vertical shaft (3); the second pulley (13) is arranged at the middle section of the fixed shaft (5);

the third pulley (14) is arranged at the front section of the suspension arm (1);

the steel rope (10) is sequentially connected with a hand winch (6), a first pulley (12), a second pulley (13) and a third pulley (14) to form a transmission structure;

the top end of the lifting hook (7) is connected with the front section of the steel rope (10) through the third pulley (14), and the bottom end of the lifting hook is connected with a transformer to be hoisted.

2. The portable pole-mounted transformer lifting device as claimed in claim 1, wherein the lifting hook (7) comprises a lifting hook unfolding member (71), a connecting rod (72), a tight connection assembly (73), a fixed block (74) and a lifting hook connection assembly (75); the hook unfolding component (71) is arranged at the top end of the connecting rod (72), the tight connection component (73) is arranged on the outer wall of the middle part of the connecting rod (72), the fixed block (74) is connected to the bottom end of the connecting rod (72), and the hook connection component (75) is fixed; is connected below the fixed block (74);

the hook (7) is connected with the steel rope (10) through a hook spreading member (71).

3. The portable pole-mounted transformer lifting device as claimed in claim 1, wherein the boom (1) is provided with a small hole (15);

the supporting shaft (2) is detachably connected with the suspension arm (1) through a small hole (15).

4. A pole transformer portable lifting device, according to claim 1, characterized in that the hand winch (6) is a bi-directional self-locking winch.

5. The portable lifting device for pole-mounted transformers according to claim 1, characterized in that the fixed connecting pieces comprise an anchor ear (8), a through screw (9), M iron;

the hoop (8) is fixed on the electric pole in an encircling manner; the penetrating screw (9) penetrates through the hoop (8) and is combined with the M iron to be fixed on the hoop (8).

6. The portable pole-mounted transformer lifting device as recited in claim 1, wherein the first pulley (12), the second pulley (13) and the third pulley (14) are V-shaped pulleys.

7. A portable pole-to-pole transformer lifting device as claimed in claim 1, characterised in that said steering bearings (11) are deep hook ball bearings.

8. A portable pole-mounted transformer lifting device according to claim 1, wherein said steel cord (10) is provided in a plurality of strands.

9. A pole transformer portable lifting device according to claim 3, characterised in that the diameter of the small hole (15) is 16mm or 14 mm.

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