Hoisting method of telegraph pole crane

Abstract

The invention relates to a lifting method of a telegraph pole crane. The adopted crane comprises a cart running track, a bridge frame, a lifting trolley, a lifting beam, a stand column, a connecting base, a suction cup device, a vacuum pump and an air valve. The hoisting method comprises the following hoisting steps: 1) moving the bridge frame and the lifting trolley on the bridge frame to enable the hoisting beam to be positioned above the telegraph pole; (2) the lifting trolley drives the hanging beam to descend, and a suction cup device at the bottom of the hanging beam abuts against the telegraph pole; (3) the suction cup devices rotate, so that all the suction cup devices are tightly attached to the telegraph pole; (4) air in the hanging beam is pumped out through the vacuum pump, and negative pressure is generated in the hanging beam; meanwhile, an air valve is opened to pump away air in the suction cup device, so that the suction cup device firmly adsorbs the telegraph pole; and (5) the lifting trolley and the movable bridge frame are linked, and the telegraph pole is conveyed to the needed position. The lifting method of the telegraph pole crane has the advantages of being adjustable in sucker angle, stable in performance, safe, reliable, low in lifting cost and the like.

Description

Technical Field

[0001] The present invention relates to a method for lifting pipe piles, specifically to a method for lifting electric poles by a crane, belonging to the technical field of cranes.

Background Art

[0002] As is well known, a crane generally consists of a bridge, a suspension beam, a steel wire rope connected between the bridge and the suspension beam, a hoisting trolley, and a bridge driving mechanism, etc. The hoisting trolley winds the steel wire rope to lift the suspension beam to achieve the lifting effect.

[0003] When the existing cranes lift non-uniform cross-section pipe piles such as electric poles, they generally adopt the fixing method of bundling with steel wire ropes, that is, when hoisting, ropes are used to tie the electric poles, and after the ropes are hung on the crane hook, hoisting is carried out. This not only has low hoisting efficiency but also poses a safety threat to the operators.

[0004] Chinese Patent No. 202122230012.1 shows a finished pipe pile lifting tool, which realizes the automatic clamping of the finished pipe pile by hooking the hook at both ends of the pipe pile (such as an electric pole), without manual operation, and the working efficiency is also greatly improved. However, the existing electric poles often have a heavy head and a light tail, and the two ends of the hook are unevenly stressed during hoisting, which is easy to cause the pipe pile to overturn; at the same time, the lifting tool uses an iron chain to connect the top of the lifting tool beam, and the iron chain is easy to shake during hoisting, and safety accidents may occur, which has certain limitations.

[0005] Another example is Chinese Patent No. 201520198397.X applied earlier by the applicant, which discloses a pipe pile vacuum suction cup crane, which realizes hoisting by adsorbing the pipe pile with a vacuum suction cup at the bottom of the suspension beam. However, the suspension beam has the following defects in actual use:

[0006] 1. For non-uniform cross-section electric poles, due to the fixed angle of the vacuum suction cup and the inability to adjust the suction cup angle, the vacuum suction cup and the electric pole cannot be closely attached, which easily leads to a sudden drop or even detachment of the adsorption force of the suction cup.

[0007] 2. The suspension beam uses an I-beam, which has a heavy self-weight; the I-beam cannot store negative pressure, and an additional pressure dividing box needs to be set, resulting in a high cost; at the same time, due to the small volume of the pressure dividing box, multiple sets of vacuum pumps and pressure dividing boxes need to be configured, further increasing the cost of the crane.

[0008] 3. Each vacuum suction cup is equipped with two sets of spring buffer devices, which complicate the structure of the suspension beam and increase the self-weight of the suspension beam.

[0009] Therefore, to solve the above technical problems, it is indeed necessary to provide an innovative method for lifting electric poles by a crane to overcome the defects in the prior art.

Summary of the Invention

[0010] To solve the above problems, the object of the present invention is to provide a lifting method for a pole crane, the suction cup angle of which is adjustable, with stable performance, safe and reliable, and low lifting cost.

[0011] To achieve the above object, the technical solution adopted by the present invention is: a lifting method for a pole crane, the crane comprising a trolley running track, a bridge, a lifting trolley, a lifting beam, a column, a connecting base, a suction cup device, a vacuum pump and an air valve; the lifting steps thereof include:

[0012] 1), Move the bridge and the lifting trolley on the bridge so that the lifting beam is located above the pole.

[0013] 2), The lifting trolley drives the lifting beam to descend so that the suction cup device at the bottom of the lifting beam abuts against the pole.

[0014] 3), The suction cup device rotates so that each suction cup device is closely attached to the pole.

[0015] 4), The vacuum pump extracts the air in the lifting beam to generate negative pressure in the lifting beam; at the same time, the air valve is opened to extract the air in the suction cup device, so that the suction cup device firmly adsorbs the pole.

[0016] 5), The lifting trolley and the moving bridge are linked to convey the pole to the required position.

[0017] The lifting method of the pole crane of the present invention is further: the trolley running track is installed on both sides of the crane; the bridge is supported and can move along the trolley running track; the lifting trolley is supported on the bridge and can move along the extending direction of the bridge; the lifting beam is connected to the bottom of the lifting trolley and is driven by the lifting trolley to lift and lower; the column is vertically installed on the lifting beam; the connecting base is pivotally connected to the column through a pin shaft so that the connecting base can rotate up and down around the pin shaft; the suction cup device is installed on the connecting base and can rotate with the connecting base to adjust the position of the suction cup device; the vacuum pump is installed on the lifting beam and can extract the gas in the lifting beam; the air valve is connected to between the lifting beam and the suction cup device through a trachea.

[0018] The lifting method of the pole crane of the present invention is further: the lifting beam is horizontally arranged and is a hollow and airtight square pipe.

[0019] The lifting method of the pole crane of the present invention is further: a plurality of columns are arranged at equal intervals, and a suction cup device is correspondingly installed on each column.

[0020] The lifting method of the pole crane of the present invention is further as follows: A spring compression nut is provided at the upper part of each column; A spring I is sleeved on the column and abuts between the spring compression nut and the upper surface of the lifting beam; A spring cover is provided at the lower part of the column, a spring II is sleeved on the column and abuts between the spring cover and the lower surface of the lifting beam; The spring I and the spring II can buffer the sucker device.

[0021] The lifting method of the pole crane of the present invention is further as follows: The sucker device includes a horizontal connecting plate, a lower swing seat and a rubber sucker; Wherein, the horizontal connecting plate is pivotally connected to the connecting base; The lower swing seat is connected to the horizontal connecting plate by a pair of buckles; The rubber sucker is installed at the bottom of the lower swing seat.

[0022] The lifting method of the pole crane of the present invention is further as follows: The rubber sucker is installed on the lower swing seat by a pair of clamping plates.

[0023] The lifting method of the pole crane of the present invention is further as follows: A set of folding rods is installed between the lifting beam and the connecting base; The folding rod includes rod body I, rod body II, rod body III and rod body IV; One end of rod body I is fixed to the bottom of the lifting beam, and the other end is pivotally connected to rod body II; One end of rod body IV is fixed to one side of the connecting base, and the other end is pivotally connected to rod body III; Rod body II and rod body III are pivotally connected.

[0024] The lifting method of the pole crane of the present invention is further as follows: One vacuum pump is provided; Each sucker device is respectively connected to the same lifting beam through an air pipe.

[0025] The lifting method of the pole crane of the present invention is also as follows: A telescopic positioning frame is respectively provided at both ends of the bottom of the lifting beam.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The sucker device adopted in the lifting method of the pole crane of the present invention can rotate relative to the pin shaft, so as to facilitate the sucker to fit the pole with non-uniform cross-section, making the adsorption force of the sucker device strong and the performance reliable.

[0028] 2. The hollow lifting beam adopted in the lifting method of the pole crane of the present invention makes the structure of the lifting beam simple, easy to manufacture, light in self-weight, and its interior can store negative pressure, eliminating the need to configure an additional negative pressure box, reducing the cost of the equipment.

[0029] 3. Each set of sucker devices in the lifting method of the pole crane of the present invention is equipped with a column, further reducing the cost of the equipment and greatly improving the reliability.

[0030] 4. The lifting method of the utility pole crane of the present invention can effectively avoid the front and rear swinging of the suction cup device and does not affect the up and down rotation of the suction cup device by providing a set of folding rods.

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the utility pole crane of the present invention.

[0032] Figure 2 is Figure 1 a partial enlarged view of I in

[0033] Figure 3 is a schematic diagram of the suspension beam and the suction cup device of the utility pole crane of the present invention.

[0034] Figure 4 is Figure 3 a schematic diagram of the partial structure of

[0035] Figure 5 is Figure 4 a sectional view taken along A-A in

[0036] Figure 6 is a state diagram of the utility pole crane of the present invention when adsorbing a utility pole.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Please refer to the attached drawings in the specification Figure 1 to Figure 6 as shown. The present invention is a utility pole crane for lifting a utility pole 10, which is composed of a trolley running track 1, a bridge 2, a lifting trolley 3, a suspension beam 4, a column 5, a connecting base 6, a suction cup device 7, a vacuum pump 8, a gas valve 81, etc.

[0038] Among them, the trolley running track 1 is installed on both sides of the crane. Rollers 21 are installed on both sides of the bridge 2, and the rollers 21 support and can move along the trolley running track 1.

[0039] The lifting trolley 3 is supported on the bridge 2 and can move along the extending direction of the bridge 2 to adjust the lifting position. The bridge 2 and the lifting trolley 4 are prior arts, so they will not be elaborated here.

[0040] The suspension beam 4 is connected to the bottom of the lifting trolley 3 and is driven by the lifting trolley 3 to lift, so as to realize the lifting of the utility pole 10. The suspension beam 4 is horizontally arranged. In this embodiment, the suspension beam 4 is a hollow and sealed square tube, which has a simple structure, reduced self-weight compared with the existing I-beam, and the inside of the suspension beam 4 can be evacuated to negative pressure without additionally installing a negative pressure box.

[0041] Further, telescopic positioning frames 41 are respectively provided at both ends of the bottom of the suspension beam 4. The telescopic positioning frames 41 can abut against the electric pole 10, so as to position the electric pole 10.

[0042] The upright column 5 is vertically installed on the suspension beam 4. In this embodiment, a plurality of upright columns 5 are arranged at equal intervals. A sucker device 7 is correspondingly installed on each upright column 5, thus improving the two upright columns in the prior art into a single upright column, reducing the cost of the equipment, reducing the self-weight of the equipment, and at the same time facilitating the up and down rotation of the sucker device 7 to adjust the position.

[0043] Further, a spring cap 51 is provided at the upper part of each upright column 5; a spring I 52 is sleeved on the upright column 5 and abuts between the spring cap 51 and the upper surface of the suspension beam 4; a spring cover 53 is provided at the lower part of the upright column 5, and a spring II 54 is sleeved on the upright column 5 and abuts between the spring cover 53 and the lower surface of the suspension beam 4. The spring I 52 and the spring II 54 form a set of buffer devices, which can buffer the sucker device 7 when the sucker device 7 abuts against the electric pole 10, and each sucker device 7 is only equipped with a set of buffer devices, so that the structure of the suspension beam system is simplified.

[0044] The connection base 6 is pivotally connected to the upright column 5 through a pin shaft 61, so that the connection base 6 can rotate up and down around the pin shaft 61. The sucker device 7 is installed on the connection base 6 and can rotate with the connection base 6 to adjust the position of the sucker device 7, so as to adjust the position of the sucker device 7, so as to facilitate the sucker device 7 to fit the non-uniform cross-section electric pole 10, so that the adsorption force of the sucker device 7 is strong and the performance is reliable.

[0045] In this embodiment, the sucker device 7 is composed of a horizontal connecting plate 71, a lower swing seat 72, a rubber sucker 73 and other parts. Among them, the horizontal connecting plate 71 is pivotally connected to the connection base 6; the lower swing seat 72 is connected to the horizontal connecting plate 71 through a pair of buckles 74, so that the lower swing seat 72 can move relative to the connection base 6.

[0046] The rubber sucker 73 is installed at the bottom of the lower swing seat 72 and can fit on the electric pole 10. Specifically, the rubber sucker 73 is installed on the lower swing seat 72 through a pair of clamping plates 75, so as to facilitate the replacement of rubber suckers 73 of different models.

[0047] Furthermore, a set of folding rods 9 is installed between the hanging beam 4 and the connecting base 6. The folding rods 9 can be folded as the connecting base 6 rotates, and prevent the connecting base 6 from deflecting forward and backward. Specifically, the folding rods 9 are composed of a rod body I 91, a rod body II 92, a rod body III 93, and a rod body IV 94. One end of the rod body I 91 is fixed to the bottom of the hanging beam 4, and the other end is pivotally connected to the rod body II 92. One end of the rod body IV 94 is fixed to one side of the connecting base 6, and the other end is pivotally connected to the rod body III 93. The rod body II 92 and the rod body III 93 are pivotally connected. By adopting the folding rods 9 in the form of a four-bar linkage, it can effectively prevent the sucker device 7 from swinging back and forth and causing the electric pole 10 to shake, and does not affect the up-and-down rotation of the sucker device 7.

[0048] The vacuum pump 8 is installed on the hanging beam 4. It can extract the gas in the hanging beam 4 to generate negative pressure in the hanging beam 4. The air valve 81 is connected to the hanging beam 4 and the sucker device 7 through an air pipe 82. In this embodiment, only one vacuum pump 8 needs to be provided, which further saves the equipment cost, and each sucker device 7 is respectively connected to the same hanging beam 4 through an air pipe 82. When the rubber sucker 73 fits against the electric pole 10, the air pipe 82 is connected to the rubber sucker 73, and the air in the rubber sucker 73 is extracted by opening the air valve 81, so that the rubber sucker 73 adsorbs the electric pole 10.

[0049] The design principle of the lifting method of the electric pole crane of the present invention is as follows: The hanging beam 4 is made of a hollow square pipe, which is light in weight and can be used as a negative pressure box, reducing the weight and cost of the equipment. The gas in the hanging beam 4 is extracted by the vacuum pump 8 to generate negative pressure in the hanging beam 4. Only one vacuum pump 8 is required for this process.

[0050] When adsorbing the electric pole 10, when the rubber sucker 73 abuts against the electric pole 10, since the cross-section of the electric pole 10 is non-uniform in diameter, that is, it has a certain taper, at this time, the connecting base 6 rotates around the pin shaft 61, so that the rubber sucker 73 rotates a certain angle and clings to the electric pole 10. Due to the limiting effect of the folding rods 9, the connecting base 6 can only rotate up and down and cannot swing back and forth, so that the electric pole 10 is stably adsorbed. At the same time, the adjacent sucker devices 7 realize height adjustment through the expansion and contraction of the spring I 52 and the spring II 54, and finally all the sucker devices 7 can adsorb on the electric pole 10. Finally, all the air valves 81 are opened, and the air in the rubber sucker 73 is extracted, so that the rubber sucker 73 firmly adsorbs the electric pole 10.

[0051] The method for lifting the electric pole 10 by using the lifting method of the electric pole crane of the present invention is as follows:

[0052] 1), Move the bridge 2 and the lifting trolley 3 on the bridge 2 so that the hanging beam 4 is located above the electric pole 10;

[0053] 2), the lifting trolley 3 drives the suspension beam 4 to descend, so that the suction cup device 7 at the bottom of the suspension beam 4 abuts against the utility pole 10;

[0054] 3), the suction cup device 7 rotates around the pin shaft 61, so that each suction cup device 7 closely adheres to the utility pole 10;

[0055] 4), the vacuum pump 8 pumps out the air in the suspension beam 4, so that a negative pressure is generated in the suspension beam 4; at the same time, the air valve 81 is opened to pump out the air in the rubber suction cup 73 of the suction cup device 7, so that the rubber suction cup 73 firmly adsorbs the utility pole 10;

[0056] 5), the lifting trolley 3 and the moving bridge 2 are linked to convey the utility pole 10 to the required position.

[0057] The above specific embodiments are only preferred embodiments of the present creation, and are not intended to limit the present creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present creation shall be included within the protection scope of the present creation.

Claims

1. A hoisting method for a telegraph pole crane, characterized in that: The crane comprises a trolley running track, a bridge, a lifting trolley, a hanging beam, a column, a connecting base, a suction cup device, a vacuum pump and an air valve; It includes the following lifting steps: 1) Move the bridge and the lifting trolley on the bridge so that the hanging beam is above the electric pole; 2) The lifting trolley drives the hanging beam to descend, so that the suction cup device at the bottom of the hanging beam abuts against the electric pole; 3) The suction cup device rotates so that each suction cup device is tightly attached to the electric pole; 4) The vacuum pump extracts the air in the hanging beam to generate negative pressure in the hanging beam; at the same time, the air valve is opened to extract the air in the suction cup device so that the suction cup device firmly adsorbs the electric pole; 5) The lifting trolley and the mobile bridge work together to transport the poles to the required location.

2. The hoisting method of the utility pole crane according to claim 1, characterized in that: The trolley running track is set up on both sides of the crane; the bridge frame supports and can move along the trolley running track; the lifting trolley is supported on the bridge frame and can move along the extension direction of the bridge frame; the hanging beam is connected to the bottom of the lifting trolley and is driven to rise and fall by the lifting trolley; the column is vertically installed on the hanging beam; the connecting base is pivotally connected to the column through a pin shaft, so that the connecting base can rotate up and down around the pin shaft; the suction cup device is installed on the connecting base, and it can rotate with the connecting base to adjust the position of the suction cup device; the vacuum pump is installed on the hanging beam, and it can extract the gas in the hanging beam; the air valve is connected between the hanging beam and the suction cup device through an air pipe.

3. The hoisting method of the utility pole crane according to claim 2, characterized in that: The hanging beam is arranged horizontally and is a hollow and closed square tube.

4. The hoisting method of the utility pole crane according to claim 2, characterized in that: The columns are provided with a plurality of equal intervals, and a suction cup device is correspondingly installed on each column.

5. The hoisting method of the utility pole crane according to claim 4, characterized in that: A spring pressure cap is provided on the upper part of each column; a spring I is sleeved on the column and abuts between the spring pressure cap and the upper surface of the hanging beam; a spring cover is provided on the lower part of the column, and a spring II is sleeved on the column and abuts between the spring cover and the lower surface of the hanging beam; the springs I and II can provide buffering for the suction cup device.

6. The hoisting method of the utility pole crane according to claim 2, characterized in that: The suction cup device includes a horizontal connecting plate, a lower swing seat and a rubber suction cup; wherein the horizontal connecting plate is pivotally connected to the connecting base; the lower swing seat is connected to the horizontal connecting plate through a pair of buckles; and the rubber suction cup is installed at the bottom of the lower swing seat.

7. The hoisting method of the utility pole crane according to claim 6, characterized in that: The rubber suction cup is installed on the lower swing seat through a pair of clamping plates.

8. The hoisting method of the utility pole crane according to claim 6, characterized in that: A set of folding rods is installed between the suspension beam and the connecting base; the folding rods include rod body I, rod body II, rod body III and rod body IV; one end of the rod body I is fixed to the bottom of the suspension beam, and the other end is pivotally connected to the rod body II; one end of the rod body IV is fixed to one side of the connecting base, and the other end is pivotally connected to the rod body III; the rod body II and the rod body III are pivotally connected.

9. The hoisting method of the utility pole crane according to claim 2, characterized in that: The vacuum pump is provided in one piece; each suction cup device is connected to the same suspension beam through an air pipe.

10. The hoisting method of the utility pole crane according to claim 2, characterized in that: A telescopic positioning frame is respectively arranged at two ends of the bottom of the hanging beam.

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