Steel pipe pile fixing and hoisting device

Abstract

The application relates to the field of steel pipe pile construction, in particular to a steel pipe pile fixing and hoisting device, which comprises a cylinder, a plurality of rows of rectangular grooves are formed in the side wall of the cylinder, a plurality of rectangular grooves are arranged in each row, an extrusion block is slidably connected in each rectangular groove, the outer end of the extrusion block protrudes outside the cylinder, the inner end of the extrusion block is rotationally connected with an extrusion rod, and the other end of the extrusion rod is eccentrically rotationally connected with a rotating disc; compared with the steel pipe pile hoisting mode through a welded lifting lug, the steel pipe pile fixing and hoisting device has higher efficiency and can be recycled; compared with the lifting lug after multiple weldings, the lifting lug entity part is cut off by gas welding, the lifting lug becomes smaller and smaller, and the lifting lug cannot be continuously used in the later period; and the steel pipe pile fixing and hoisting device has a certain range of the length of the outward extension of the extrusion block, can be suitable for the extrusion fixing of steel pipe piles with various diameters, and has high applicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steel pipe pile construction, and particularly relates to a steel pipe pile fixing and hoisting device. BACKGROUND

[0002] In some infrastructure construction sites, the base is soft, or the equipment is heavy, and the base is difficult to stably support the equipment. For example, at the entrance of some subway tunnels, shield equipment is assembled. Because the shield equipment is heavy, when the hoisting equipment hoists the shield equipment into the tunnel, the ground surface will be depressed, or the earthwork will be displaced and moved towards the tunnel entrance, resulting in a collapse event at the tunnel entrance. Therefore, some steel pipe piles are driven around the tunnel entrance to block the earthwork, prevent the deformation of the tunnel entrance, and ensure the stability of the tunnel entrance.

[0003] The steel pipe pile is also a large-volume and heavy construction material. After being hoisted by the hoisting equipment, it is driven into the ground. The existing hoisting method generally welds an ear at one end of the steel pipe pile, then binds the ear with a steel rope, controls the steel rope to be tightened and wound by the hoisting equipment, and hoists the steel pipe pile to the pile driving position. Although this method can successfully hoist the steel pipe pile, it also has some disadvantages. The ear needs to be welded before hoisting, and the ear needs to be cut off by gas welding after hoisting. This method increases the construction period and has an adverse effect on the completion within the specified period.

[0004] Therefore, the steel pipe pile fixing and hoisting device is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the steel pipe pile fixing and hoisting device comprises a cylinder, a plurality of rectangular grooves are formed in the side wall of the cylinder, a plurality of rectangular grooves are arranged in each circle, an extrusion block is slidably connected in each rectangular groove, the outer end of the extrusion block protrudes out of the cylinder, the inner end of the extrusion block is rotatably connected with an extrusion rod, the other end of the extrusion rod is eccentrically rotatably connected with a rotating disc, a rotating shaft penetrates through the adjacent rotating discs, the end of the rotating shaft is fixedly connected with a hydraulic motor, and the hydraulic motor is fixedly connected to the inner side wall of the cylinder; a stepped groove is formed in the upper end surface of the cylinder, a cover plate is arranged on the inner surface of the stepped groove and connected through bolts, a pipe is arranged on the inner end surface of the cover plate, the pipe is inserted into an insertion hole formed in the stepped groove of the cylinder, the insertion hole is communicated with the hydraulic motor, the pipe is communicated with an external oil pump through an oil pipe, a binding hole is arranged on the upper end of the cylinder, the end of an external steel rope is fixedly connected to the binding hole, and the cylinder is inserted into a steel pipe pile; in the embodiment of the present application, an efficient steel pipe pile fixing and hoisting device is designed; in use, first, the cover plate is fixed in the stepped groove of the cylinder, the oil pipe is laid along the large arm of the hoisting equipment, and the opening and closing of the oil pump connected to the oil pipe are controlled by the person driving the hoisting equipment, then the cylinder is placed in the steel pipe pile, the oil pump is opened, the hydraulic oil is injected into the hydraulic motor through the oil pipe and the pipe, the hydraulic motor rotates and drives the rotating disc to rotate, the rotating disc drives the extrusion rod to rotate, at the same time, the extrusion rod pushes the extrusion block outward and extrudes the inner surface of the steel pipe pile, at this time, the cylinder and the steel pipe pile are fixed as a whole, then the hoisting equipment is controlled, the steel rope is wound, the steel pipe pile is hoisted, after the steel pipe pile is hoisted to the designated position, the oil pump is controlled to return oil, the hydraulic motor is reversed and rotated, and the extrusion block is pulled back into the cylinder, at this time, the cylinder and the steel pipe pile are separated, and the cylinder is lifted out of the steel pipe pile; compared with the method of hoisting the steel pipe pile through the welded lifting lug, the steel pipe pile fixing and hoisting device has higher efficiency and can be recycled, compared with the lifting lug after multiple weldings, the lifting lug entity part is cut off by gas welding, which makes the lifting lug smaller and smaller, and causes the lifting lug to be unable to be used continuously in the later period, and the steel pipe pile fixing and hoisting device can be applied to the extrusion fixing of steel pipe piles with various diameters due to the certain range of the length of the extrusion block extending outward, and has strong applicability.

[0007] Preferably, the upper end of the cylinder is provided with a lifting plate, the upper end surface of the lifting plate is fixedly connected with a lifting lug, the lower surface of the lifting plate is fixedly connected with a base block, the lower end surface of the base block is rotatably connected with a hook, and the hook is hooked in the binding hole; the steel rope is hard, and it is difficult to bind the steel rope to the binding hole position on the cylinder each time, and the friction between the steel rope and the binding hole makes the hole of the binding hole larger and larger, which may cause the binding hole to be penetrated and damaged, after the binding hole on the cylinder is damaged, the cylinder cannot be continuously used, therefore, the hooking mode is arranged to hoist and fix the cylinder; the steel rope is bound to the lifting lug on the lifting plate, then the lifting plate is buckled on the cylinder, and the hook is bound in the binding hole, and the steel rope does not need to be bound to the binding hole on the cylinder during hoisting, and will not affect the recycling of the cylinder.

[0008] Preferably, the hanging plate and the barrel are provided with an extension barrel, a plurality of rectangular grooves are opened in the side wall of the extension barrel, a plurality of rectangular grooves are arranged in each circle, an extrusion block is slidably connected in each rectangular groove, the outer end of the extrusion block protrudes out of the extension barrel, the inner end of the extrusion block is rotatably connected with an extrusion rod, the other end of the extrusion rod is eccentrically connected with a rotating disc, a rotating shaft penetrates through the upper and lower adjacent rotating discs, the end of the rotating shaft is fixedly connected with a hydraulic motor, the hydraulic motor is fixedly connected to the inner side wall of the extension barrel, a stepped groove is opened in the upper end of the extension barrel, a step is arranged at the lower end of the extension barrel, the step is embedded in the stepped groove of the barrel, a through hole is opened in the stepped groove of the extension barrel, the through hole penetrates through the step, a pipe is inserted into the upper end of the hole of the through hole, a connecting pipe is arranged at the lower end of the hole of the through hole, and the connecting pipe is inserted into the insertion hole on the barrel; when the length of the steel pipe pile is too large or the mass of the steel pipe pile is large, it is difficult for the extrusion block in a single barrel to fix the steel pipe pile, at this time, the extension barrel is designed to increase the number of extrusion blocks and increase the stability between the barrel and the steel pipe pile; the flanges with threaded holes are arranged at the two ends of the extension barrel, the flanges with threaded holes are arranged at the end of the barrel, the step part of the extension barrel is embedded in the stepped groove in the barrel, and the connecting pipe is inserted into the insertion hole, the oil supply channel of the hydraulic motor is communicated, then the flanges are fixed together through the threaded holes in the flanges, then the cover plate is fixed in the stepped groove of the extension barrel, the pipe of the cover plate is inserted into the insertion hole of the extension barrel, and then the hanging plate is installed at the end of the extension barrel, that is, the hook is hooked in the binding hole of the extension barrel, and then it is installed in the steel pipe pile, the plurality of extrusion blocks on the extension barrel and the barrel are simultaneously extruded on the inner surface of the steel pipe pile, the contact area between the steel pipe pile and the lifting device is increased, the friction force is increased, and then the stability is enhanced.

[0009] Preferably, a plurality of air injection holes are opened on the outer circle of the lower end of the barrel, the air injection holes are communicated with the pipeline arranged in the barrel, the pipeline extends to the stepped groove position of the barrel, the stepped groove position of the barrel is provided with a connecting hole, the lower surface of the cover plate is provided with a pipe body, the pipe body is inserted into the connecting hole, and the end of the pipe body is connected with an external air pump through a hose; the steel pipe pile is placed in the natural environment for a long time, and moisture is attached to the inner surface of the steel pipe pile, which is an unfriendly factor for the friction between the extrusion block and the steel pipe pile, and the phenomenon of slipping between the extrusion block and the steel pipe pile may occur; therefore, a plurality of air injection holes are arranged on the barrel, the air injection holes are communicated with the pipeline, the pipeline is communicated with the connecting hole, the cover plate is installed in the stepped groove, the pipe body is inserted into the connecting hole, and the hose is also laid along the large arm of the lifting equipment, and the start and stop of the air pump are controlled by the driver; the barrel is installed at one end of the steel pipe pile, the air pump is controlled to supply air, the gas is injected into the pipeline along the hose, and is discharged from the air injection hole, the gas impacts on the inner surface of the steel pipe pile, and the moisture on the surface of the steel pipe pile is washed away, the moisture is reduced to the other end of the steel pipe pile, the slipping phenomenon between the extrusion block and the steel pipe pile is reduced, and the gas can be heated and injected into the pipe body, the dry hot air flow can quickly dry the moisture on the surface of the steel pipe pile, and the stability between the extrusion block and the steel pipe pile is improved.

[0010] Preferably, a through hole is arranged in the stepped groove of the extension cylinder, the through hole extends to the step and communicates with the hollow pipe, the hollow pipe is inserted into the connecting hole in the stepped groove of the cylinder body; similarly, the extension cylinder is installed on the cylinder body, the flange plate on the extension cylinder is fixed with the flange plate on the cylinder body, the hollow pipe is inserted into the connecting hole, and then the cover plate is fixed in the stepped groove of the extension cylinder, the pipe body on the cover plate is inserted into the through hole of the stepped groove of the extension cylinder, so that the gas is transferred between the cylinder body and the extension cylinder, the movement of all the extrusion blocks can be realized, and the inner surface of the steel pipe pile can be extruded at the same time, and the gas can be discharged from the jet hole.

[0011] Preferably, the outer end surface of each extrusion block is arc-shaped, and a rubber pad is fixedly connected to the outer end surface of the extrusion block; by arranging the rubber pad on the surface of the extrusion block, the rubber pad is deformed when the extrusion block is extruded against the inner surface of the steel pipe pile, so that the rubber pad is extruded against the inner surface of the steel pipe pile, the friction between the extrusion block and the steel pipe pile is increased, and the stability between the cylinder body and the steel pipe pile is improved.

[0012] Preferably, the outer end surface of each extrusion block is provided with a bolt fixedly connected to a plate body, the plate body is arc-shaped, and a rubber pad is fixedly connected to the surface of the plate body; by arranging the plate body on the surface of the extrusion block, on the one hand, the shape of the plate body can effectively increase the friction of the extrusion force of the extrusion block on the steel pipe pile and improve the stability, and on the other hand, the rubber pad is worn out when it is extruded repeatedly or relatively slides against the inner surface of the steel pipe pile, the rubber pad is worn out or broken, the rubber pad with changed texture with temperature is more likely to be extruded and broken when the temperature is low, and the worn-out or broken rubber pad is not conducive to the stable lifting of the steel pipe pile, so the rubber pad needs to be replaced in time, and therefore, the plate body which can be conveniently replaced is arranged on the surface of the extrusion block, and a new plate body can be directly replaced when the rubber pad is damaged.

[0013] Preferably, an annular scraper is arranged on the outer circle of the lower end of the cylinder body, the inner circle of the scraper is fixedly connected to the outer surface of the cylinder body and located below the jet hole; the scraper is arranged on the cylinder body, and the purpose is to scrape off the rust spots on the inner surface of the steel pipe pile, and the rust spots on the inner surface of the steel pipe pile can also be removed by the effect of the gas discharged from the jet hole, but compared with the scraper, the scraper has better rust removal effect, and when the scraper removes rust, the gas can help to remove the iron filings from the extrusion position of the rubber pad on the steel pipe pile, so that the rubber pad can be directly extruded on the steel pipe pile, and the stability is ensured.

[0014] Preferably, the outer ring of the scraper is provided with an annular groove, and a tire bead is arranged in the groove, and the outer surface of the tire bead protrudes out of the groove; the diameter of the steel pipe pile has multiple values, and the diameter of the scraper is a fixed value, so that the groove is arranged on the scraper, the tire bead is arranged in the groove, the tire bead is filled with gas, the diameter of the outer ring of the tire bead is increased, so that the effective scraping diameter of the scraper is also increased, the surface of the tire bead scrapes off the iron filings on the inner surface of the steel pipe pile, and can adapt to the cleaning of the inner surface of the steel pipe pile with multiple diameters.

[0015] Preferably, the lower end of the cylinder body is in the shape of a circular truncated cone; the lower end of the cylinder body is arranged in the shape of a circular truncated cone, so that the cylinder body is conveniently inserted into the steel pipe pile.

[0016] The present application has the advantages that:

[0017] 1. The steel pipe pile fixing and lifting device designed in the present application has higher efficiency compared with the lifting of the steel pipe pile through the welding of lifting lugs, and can be recycled; compared with the lifting lug after multiple weldings, the solid part of the lifting lug is cut off by gas welding, so that the lifting lug becomes smaller and smaller, which leads to the fact that the lifting lug cannot be used any more in the later period, and the steel pipe pile fixing and lifting device can be applied to the extrusion fixing of steel pipe piles with multiple diameters due to the fact that the length of the extrusion block extending outward has a certain range, so that the applicability is relatively strong.

[0018] 2. The present application increases the stability between the cylinder body and the steel pipe pile by designing an extension cylinder to increase multiple extrusion blocks; the multiple extrusion blocks on the extension cylinder and the cylinder body are simultaneously extruded on the inner surface of the steel pipe pile, the contact area between the steel pipe pile and the lifting device is increased, so that the friction is increased, and then the stability is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the steel pipe pile fixing and lifting device in Example 1.

[0020] Figure 2 It is a sectional view of the steel pipe pile fixing and lifting device in Example 1.

[0021] Figure 3 It is a perspective view of the lifting plate in Example 1.

[0022] Figure 4 It is a front view of the lifting plate in Example 1.

[0023] Figure 5 It is a perspective view of the extrusion block in Example 1.

[0024] Figure 6 It is a cooperation perspective view of the cylinder body and the extension cylinder in Example 1.

[0025] Figure 7 It is a first perspective view of the extension cylinder in Example 1.

[0026] Figure 8Figure 2 is a second perspective view of the extension cylinder of Example 1.

[0027] In the figure: cylinder 1, extrusion block 2, extrusion rod 3, rotating disc 4, rotating shaft 5, hydraulic motor 6, stepped groove 7, cover plate 8, insertion tube 9, insertion hole 10, oil pipe 11, binding hole 12, hanging plate 13, hook 14, extension cylinder 15, step 16, through hole 17, air injection hole 18, connecting pipe 19, pipe 20, connecting hole 21, pipe body 22, hose 23, through hole 24, hollow pipe 25, rubber pad 26, plate body 27, scraper 28, tire bead 29. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0029] Example 1:

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The utility model provides a kind of steel pipe pile fixed lifting device, including cylinder 1, multiple rectangular grooves are opened on the side wall of cylinder 1, multiple rectangular grooves are arranged in each circle, extrusion block 2 is slidably connected in each rectangular groove, the outer end of extrusion block 2 protrudes outside cylinder 1, the inner end of extrusion block 2 is rotatably connected with extrusion rod 3, the other end of extrusion rod 3 is eccentrically rotatably connected with rotating disc 4, rotating shaft 5 is penetrated in upper and lower adjacent rotating disc 4, the end of rotating shaft 5 is fixedly connected with hydraulic motor 6, and hydraulic motor 6 is fixedly connected in the inner side wall of cylinder 1;The upper end surface of the cylinder 1 is provided with a stepped groove 7, the inner surface of the stepped groove 7 is provided with a bolted cover plate 8, the inner end surface of the cover plate 8 is provided with a spigot 9, the spigot 9 is inserted into the insertion hole 10 in the stepped groove 7 of the cylinder 1, the insertion hole 10 is communicated with the hydraulic motor 6, the spigot 9 is communicated with external oil pump through oil pipe 11, the upper end of the cylinder 1 is provided with a binding hole 12, the binding hole 12 is fixedly connected with the end of external steel rope, and the cylinder 1 is inserted into the steel pipe pile;In the embodiment of the utility model, an efficient steel pipe pile fixed lifting device is designed;When using, first, the cover plate 8 is fixed in the stepped groove 7 of the cylinder 1, the oil pipe 11 is laid along the large arm of hoisting equipment, and the opening and closing of the oil pump connected with the oil pipe 11 are controlled by the personnel driving the hoisting equipment, then the cylinder 1 is placed in the steel pipe pile, the oil pump is opened, the hydraulic oil is injected into the hydraulic motor 6 along the oil pipe 11 and the spigot 9, the hydraulic motor 6 rotates and drives the rotating disc 4 to rotate, the rotating disc 4 drives the extrusion rod 3 to rotate, at the same time, the extrusion rod 3 pushes the extrusion block 2 outward and extrudes the inner surface of the steel pipe pile, at this time, the cylinder 1 and the steel pipe pile are fixed as a whole, then the hoisting equipment is controlled, the steel rope is wound, the steel pipe pile is lifted, after the steel pipe pile is lifted to the specified position, the oil pump is controlled to return oil, the hydraulic motor 6 is turned over and rotates, and the extrusion block 2 is pulled back to the cylinder 1, at this time, the cylinder 1 and the steel pipe pile are separated, and the cylinder 1 is lifted out of the steel pipe pile;Compared with the lifting of the steel pipe pile by welding lifting lug, the steel pipe pile fixed lifting device is more efficient, and can be recycled, compared with the lifting lug after multiple welding, the lifting lug entity part is cut off by gas welding, so that the lifting lug becomes smaller and smaller, which leads to the inability to continue to use in later period, and the steel pipe pile fixed lifting device can be suitable for the extrusion and fixation of steel pipe piles of various diameters due to the certain range of the length of the extrusion block 2 extending outward, so the applicability is stronger.

[0031] Reference Figure 3 And Figure 4The upper end of the barrel 1 is provided with a lifting plate 13, the upper end surface of the lifting plate 13 is fixedly connected with a lifting lug, the lower surface of the lifting plate 13 is fixedly connected with a base block, the lower end surface of the base block is rotationally connected with a hook 14, the hook 14 is hooked in the binding hole 12; the steel rope is hard in texture, and it is difficult to bind the steel rope on the barrel 1 at the position of the binding hole 12 each time, and the friction between the steel rope and the binding hole 12 makes the hole of the binding hole 12 larger and larger, which may cause the binding hole 12 to be damaged, after the binding hole 12 on the barrel 1 is damaged, the barrel 1 cannot be continuously used, for this, the hooking mode is arranged to hoist and fix the barrel 1; the steel rope is bound on the lifting lug of the lifting plate 13, then the lifting plate 13 is buckled on the barrel 1, and the hook 14 is bound in the binding hole 12, when hoisting, the steel rope does not need to be bound on the binding hole 12 of the barrel 1, and the hoisting device does not affect the cyclic use of the barrel 1.

[0032] With reference to Figure 6 , Figure 7 and Figure 8 , the lifting plate 13 and the barrel 1 are provided with an extension barrel 15, a plurality of rectangular grooves are formed on the side wall of the extension barrel 15, a plurality of rectangular grooves are arranged in each circle, an extrusion block 2 is slidably connected in each rectangular groove, the outer end of the extrusion block 2 protrudes out of the extension barrel 15, the inner end of the extrusion block 2 is rotationally connected with an extrusion rod 3, the other end of the extrusion rod 3 is eccentrically rotationally connected with a rotating disc 4, a rotating shaft 5 penetrates the upper and lower adjacent rotating discs 4, the end of the rotating shaft 5 is fixedly connected with a hydraulic motor 6, the hydraulic motor 6 is fixedly connected to the inner side wall of the extension barrel 15, a stepped groove 7 is formed in the upper end of the extension barrel 15, a step 16 is arranged at the lower end of the extension barrel 15, the step 16 is embedded in the stepped groove 7 of the barrel 1, a through hole 17 is formed in the stepped groove 7 of the extension barrel 15, the through hole 17 penetrates the step 16, a pipe 9 is inserted in the upper end of the hole of the through hole 17, a gas injection hole 18 is arranged at the lower end of the hole of the through hole 17, and the gas injection hole 18 is inserted in the insertion hole 10 on the barrel 1; when the length of the steel pipe pile is too large, or the mass of the steel pipe pile is large, it is difficult for the extrusion block 2 in a single barrel 1 to fix the steel pipe pile, at this time, the extension barrel 15 is designed to increase the number of extrusion blocks 2 and increase the stability between the barrel 1 and the steel pipe pile; the flanges with threaded holes are arranged at the two ends of the extension barrel 15, the flanges with threaded holes are also arranged at the ends of the barrel 1, the step 16 part of the extension barrel 15 is embedded in the stepped groove 7 in the barrel 1, and the connecting pipe 19 is inserted into the insertion hole 10, the oil supply channel of the hydraulic motor 6 is communicated, then the flanges are fixed together through the threaded holes on the flanges, then the cover plate 8 is fixed in the stepped groove 7 on the extension barrel 15, the pipe 9 on the cover plate 8 is inserted in the insertion hole 10 on the extension barrel 15, then the lifting plate 13 is installed at the end of the extension barrel 15, that is, the hook 14 is hooked in the binding hole 12 on the extension barrel 15, and then it is installed in the steel pipe pile, the plurality of extrusion blocks 2 on the extension barrel 15 and the barrel 1 extrude the inner surface of the steel pipe pile at the same time, the contact area between the steel pipe pile and the hoisting device is increased, so that the friction is increased, and then the stability is enhanced.

[0033] With reference to Figure 6 , Figure 7 and Figure 8 , a plurality of air injection holes are formed on the outer periphery of the lower end of the cylinder 1, the air injection holes are connected to a pipeline 20 arranged in the cylinder 1, the pipeline 20 extends to the position of the stepped groove 7 of the cylinder 1, a connecting hole 21 is formed on the position of the stepped groove 7 of the cylinder 1, a pipe body 22 is arranged on the lower surface of the cover plate 8, the pipe body 22 is inserted into the connecting hole 21, and the end of the pipe body 22 is connected to an external air pump through a hose 23; the steel pipe pile is placed in the natural environment for a long time, and moisture is attached to the inner surface of the steel pipe pile, which is an unfriendly factor for the friction between the extrusion block 2 and the steel pipe pile, and the sliding phenomenon between the extrusion block 2 and the steel pipe pile may occur; therefore, a plurality of air injection holes are arranged on the cylinder 1, the air injection holes are connected to the pipeline 20, the pipeline 20 is connected to the connecting hole 21, the cover plate 8 is arranged on the stepped groove 7, the pipe body 22 is inserted into the connecting hole 21, and the hose 23 is also arranged along the large arm of the hoisting equipment, and the start and stop of the air pump are controlled by the driver; the cylinder 1 is arranged on one end of the steel pipe pile, the air pump is controlled to supply air, the air is injected into the pipeline 20 through the hose 23, and is discharged through the air injection holes, the air impacts the inner surface of the steel pipe pile, and the moisture on the surface of the steel pipe pile is removed, the moisture is reduced to the other end of the steel pipe pile, the sliding phenomenon between the extrusion block 2 and the steel pipe pile is reduced, and the air can be heated and injected into the pipe body 22, the dry hot air flow can quickly dry the moisture on the surface of the steel pipe pile, and the stability between the extrusion block 2 and the steel pipe pile is improved.

[0034] With reference to Figure 6 , Figure 7 and Figure 8 , a through hole 24 is formed in the stepped groove 7 of the extension cylinder 15, the through hole 24 extends to the step 16 and is connected to a hollow pipe 25, and the hollow pipe 25 is inserted into the connecting hole 21 in the stepped groove 7 of the cylinder 1; the extension cylinder 15 is also arranged on the basis of the cylinder 1, the flange plate on the extension cylinder 15 is fixed with the flange plate on the cylinder 1, the hollow pipe 25 is inserted into the connecting hole 21, and the cover plate 8 is fixed in the stepped groove 7 of the extension cylinder 15, the pipe body 22 on the cover plate 8 is inserted into the through hole 24 in the stepped groove 7 of the extension cylinder 15, the air is transferred between the cylinder 1 and the extension cylinder 15, the movement of all the extrusion blocks 2 is realized, the inner surface of the steel pipe pile is extruded, and the air is discharged through the air injection holes.

[0035] With reference to Figure 5The outer end surface of each extrusion block 2 is arc-shaped, and a rubber pad 26 is fixed to the outer end surface of the extrusion block 2; by arranging the rubber pad 26 on the surface of the extrusion block 2, the rubber pad 26 is deformed when the extrusion block 2 is extruded against the inner surface of the steel pipe pile, so that the rubber pad 26 is extruded against the inner surface of the steel pipe pile, the friction between the extrusion block 2 and the steel pipe pile is increased, and the stability between the cylinder body 1 and the steel pipe pile is improved.

[0036] Referring to Figure 5 The outer end surface of each extrusion block 2 is provided with a bolt-fixed plate body 27, the plate body 27 is arc-shaped, and a rubber pad 26 is fixed to the surface of the plate body 27; by arranging the plate body 27 on the surface of the extrusion block 2, on the one hand, the shape of the plate body 27 can effectively increase the friction of the extrusion force of the extrusion block 2 against the steel pipe pile and improve the stability, and on the other hand, the rubber pad 26 is worn out when it is extruded multiple times or slides against the inner surface of the steel pipe pile, the rubber pad 26 is damaged when it is broken, and the worn-out or broken rubber pad 26 is not conducive to the stable lifting of the steel pipe pile, so the plate body 27 can be conveniently replaced when the rubber pad 26 is damaged, and the new plate body 27 can be directly replaced.

[0037] Referring to Figure 1 The outer circle of the lower end of the cylinder body 1 is provided with a scraper 28, the inner circle of the scraper 28 is fixed to the outer surface of the cylinder body 1 and is located below the air jet hole 18; the scraper 28 is arranged on the cylinder body 1 to scrape off the rust spots on the inner surface of the steel pipe pile, and the rust spots on the inner surface of the steel pipe pile can also be removed by the action of the gas discharged from the air jet hole, but compared with the scraper 28, the scraper 28 has a better rust removal effect, and when the scraper 28 removes rust, the gas can help to remove the iron filings from the extrusion position of the extrusion block 2 on the steel pipe pile, so that the rubber pad 26 can be directly extruded against the steel pipe pile to ensure stability.

[0038] Referring to Figure 1 The outer circle of the scraper 28 is provided with a groove, and a tire ring 29 is arranged in the groove; the diameter of the steel pipe pile has multiple values, and the diameter of the scraper 28 is a fixed value, so the groove is arranged on the scraper 28, the tire ring 29 is arranged in the groove, gas is filled in the tire ring 29, the diameter of the outer circle of the tire ring 29 is increased, so the effective scraping diameter of the scraper 28 is also increased, the surface of the tire ring 29 can scrape off the iron filings on the inner surface of the steel pipe pile, and can adapt to the inner surfaces of steel pipe piles with multiple diameters.

[0039] Embodiment two:

[0040] Comparative Example One, as another embodiment of the present application, wherein the lower end of the barrel 1 is arranged in a frustum shape; the lower end of the barrel 1 is arranged in a frustum shape, which facilitates the insertion of the barrel 1 into the steel pipe pile.

[0041] Working principle: in use, first, the cover plate 8 is fixed on the barrel 1 in the stepped groove 7, the oil pipe 11 is laid along the large arm of the hoisting equipment, and the opening and closing of the oil pump connected by the oil pipe 11 are controlled by the person driving the hoisting equipment, then the barrel 1 is placed in the steel pipe pile, the oil pump is opened, the hydraulic oil is injected into the hydraulic motor 6 along the oil pipe 11 and the insertion pipe 9, the hydraulic motor 6 rotates and drives the rotating disc 4 to rotate, the rotating disc 4 drives the extrusion rod 3 to rotate, at the same time, the extrusion rod 3 pushes the extrusion block 2 outward and extrudes it on the inner surface of the steel pipe pile, at this time, the barrel 1 and the steel pipe pile are fixed as a whole, then the hoisting equipment is controlled to wind the steel rope and lift the steel pipe pile, after the steel pipe pile is lifted to the designated position, the oil pump is controlled to return oil, the hydraulic motor 6 is reversed and rotates, and the extrusion block 2 is pulled back into the barrel 1, at this time, the barrel 1 and the steel pipe pile are separated, and the barrel 1 is lifted out of the steel pipe pile; compared with the method of lifting the steel pipe pile by welding lifting lugs, the steel pipe pile fixing and lifting device has higher efficiency and can be recycled, compared with the lifting lugs after multiple weldings, the lifting lugs are smaller and smaller after the solid part is cut off by gas welding, which makes it impossible to continue to use in the later period, and the steel pipe pile fixing and lifting device can be used for the extrusion and fixation of steel pipe piles of various diameters due to the certain range of the length of the extrusion block 2 extending outward, which has strong applicability;

[0042] The steel rope is hard, and it is difficult to bind the steel rope on the barrel 1 at the binding hole 12 position each time, and the friction between the steel rope and the binding hole 12 makes the hole of the binding hole 12 larger and larger, which may cause the binding hole 12 to be damaged, after the binding hole 12 on the barrel 1 is damaged, the barrel 1 cannot be used continuously, therefore, the hooking mode is set to lift and fix the barrel 1; the steel rope is bound on the lifting lug of the lifting plate 13, then the lifting plate 13 is buckled on the barrel 1, and the hook 14 is bound in the binding hole 12, when lifting, the steel rope does not need to be bound on the binding hole 12 of the barrel 1, and it will not affect the recycling of the barrel 1;

[0043] When the length of the steel pipe pile is too large or the mass of the steel pipe pile is too large, the extrusion block 2 in the single barrel 1 is difficult to fix the steel pipe pile, at this time, the extension barrel 15 is designed to increase the number of extrusion blocks 2 and increase the stability between the barrel 1 and the steel pipe pile; the flanges at both ends of the extension barrel 15 are provided with threaded holes, the end of the barrel 1 is also provided with a flange with a threaded hole, the stepped portion 16 of the extension barrel 15 is embedded in the stepped groove 7 in the barrel 1, and the connecting pipe 19 is inserted into the insertion hole 10, the oil supply channel of the hydraulic motor 6 is connected, then the threaded holes in the flanges are fixed together by bolts, then the cover plate 8 is fixed in the stepped groove 7 of the extension barrel 15, the insertion pipe 9 on the cover plate 8 is inserted into the insertion hole 10 of the extension barrel 15, and then the hanging plate 13 is installed at the end of the extension barrel 15, that is, the hooks 14 are hooked in the binding holes 12 of the extension barrel 15, and then installed in the steel pipe pile, the multiple extrusion blocks 2 on the extension barrel 15 and the barrel 1 are simultaneously extruded on the inner surface of the steel pipe pile, the contact area between the steel pipe pile and the lifting device is increased, thereby increasing the friction and enhancing the stability;

[0044] The steel pipe pile is placed in the natural environment for a long time, and water is attached to the inner surface of the steel pipe pile, which is an unfriendly factor for the friction between the extrusion block 2 and the steel pipe pile, and the phenomenon of slipping between the extrusion block 2 and the steel pipe pile may occur; therefore, multiple air injection holes are provided on the barrel 1, the air injection holes are connected to the pipeline 20, the pipeline 20 is connected to the connecting hole 21, the cover plate 8 is installed in the stepped groove 7, the pipe body 22 is inserted into the connecting hole 21, and the hose 23 is also laid along the large arm of the lifting device, and the start and stop of the air pump is controlled by the driver; the barrel 1 is installed from one end of the steel pipe pile, the air pump is controlled to supply air, the gas is injected into the pipeline 20 along the hose 23, and is discharged from the air injection hole, the gas impacts on the inner surface of the steel pipe pile, and the water on the surface of the steel pipe pile is washed away, which reduces the slipping phenomenon between the extrusion block 2 and the steel pipe pile, and the gas can be heated and injected into the pipe body 22, the dry hot gas flow can quickly dry the water on the surface of the steel pipe pile, which helps to improve the stability between the extrusion block 2 and the steel pipe pile;

[0045] Similarly, the extension barrel 15 is installed on the basis of the barrel 1, the flanges on the extension barrel 15 and the flanges on the barrel 1 are fixed together, the hollow pipe 25 is inserted into the connecting hole 21, and then the cover plate 8 is fixed in the stepped groove 7 of the extension barrel 15, the pipe body 22 on the cover plate 8 is inserted into the through hole 24 in the stepped groove 7 of the extension barrel 15, the gas transmission between the barrel 1 and the extension barrel 15 is realized, all the extrusion blocks 2 can be moved and extruded on the inner surface of the steel pipe pile, and the gas can be discharged from the air injection hole;

[0046] By setting rubber pad 26 on the surface of extrusion block 2, when extrusion block 2 is extruded on the inner surface of steel pipe pile, rubber pad 26 is deformed by extrusion, so that rubber pad 26 is extruded on the inner surface of steel pipe pile, the friction between extrusion block 2 and steel pipe pile is increased, thereby the stability between cylinder body 1 and steel pipe pile is improved;

[0047] By setting plate body 27 on the surface of extrusion block 2, firstly, the shape of plate body 27 is set, so that the extrusion force of extrusion block 2 on steel pipe pile can effectively increase the friction and improve the stability, secondly, when rubber pad 26 is extruded for many times or relative sliding occurs on the inner surface of steel pipe pile, rubber pad 26 is worn, and thirdly, the texture of rubber pad 26 changes with the temperature of weather, when the temperature is low, rubber pad 26 is harder and more easily extruded and broken, and damaged, and the worn rubber pad 26 or broken rubber pad 26 is not conducive to the stable lifting of steel pipe pile, therefore, rubber pad 26 needs to be replaced in time, therefore, plate body 27 which can be conveniently replaced is set on the surface of extrusion block 2, after rubber pad 26 is extruded and damaged, new plate body 27 can be directly replaced;

[0048] Scraper 28 is set on cylinder body 1, the purpose is to scrape off the rust spots on the inner surface of steel pipe pile, under the action of gas discharged from the air injection hole, the rust spots on the inner surface of steel pipe pile can also be removed, but compared with scraper 28, the rust removal effect of scraper 28 is better, and when scraper 28 removes rust, gas can assist in removing the iron filings from the extrusion position of extrusion block 2 on steel pipe pile, so that rubber pad 26 can be directly extruded on steel pipe pile, and the stability is ensured;

[0049] The diameter of steel pipe pile has many kinds, and the diameter of scraper 28 is a fixed value, therefore, groove is set on scraper 28, and tire ring 29 is arranged in the groove, gas is filled in tire ring 29, the outer diameter of tire ring 29 is increased, so that the effective scraping diameter of scraper 28 is also increased, the surface of tire ring 29 scrapes off the iron filings on the inner surface of steel pipe pile, and can adapt to the inner surface rust cleaning of steel pipe pile with many kinds of diameters.

[0050] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, without departing from the spirit and scope of the present application, the present application can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel pipe pile fixing and lifting device, characterized in that: Includes a cylinder (1), with multiple rectangular grooves on the upper and lower sides of the side wall of the cylinder (1), each groove having multiple rectangular grooves, and a pressing block (2) slidably connected in each rectangular groove. The outer end of the pressing block (2) protrudes out of the cylinder (1), and the inner end of the pressing block (2) is rotatably connected to a pressing rod (3). The other end of the pressing rod (3) is eccentrically rotatably connected to a turntable (4). A rotating shaft (5) passes through adjacent upper and lower turntables (4), and a hydraulic motor (6) is fixedly connected to the end of the rotating shaft (5). The hydraulic motor (6) is fixedly connected to the inner side wall of the cylinder (1). The upper end face of the cylinder (1) is provided with a stepped groove (7), the inner surface of the stepped groove (7) is provided with a bolt-connected cover plate (8), the inner end face of the cover plate (8) is provided with an insertion tube (9), the insertion tube (9) is inserted into the insertion hole (10) in the stepped groove (7) of the cylinder (1), the insertion hole (10) is connected to the hydraulic motor (6), the insertion tube (9) is connected to the external oil pump through the oil pipe (11), the upper end of the cylinder (1) is provided with a binding hole (12), the binding hole (12) is fixed to the end of the external steel rope, and the cylinder (1) extends into the steel pipe pile; The upper end of the cylinder (1) is provided with a lifting plate (13), the upper end face of the lifting plate (13) is fixedly connected with a lifting lug, the lower surface of the lifting plate (13) is fixedly connected with a base block, the lower end face of the base block is rotatably connected with a hook (14), and the hook (14) is hooked into the binding hole (12). An extension cylinder (15) is provided between the hanging plate (13) and the cylinder (1). The side wall of the extension cylinder (15) has multiple rectangular grooves on the upper and lower sides. Each ring has multiple rectangular grooves. An extrusion block (2) is slidably connected in each rectangular groove. The outer end of the extrusion block (2) protrudes out of the extension cylinder (15). An extrusion rod (3) is rotatably connected to the inner end of the extrusion block (2). The other end of the extrusion rod (3) is eccentrically rotatably connected to a turntable (4). A rotating shaft (5) passes through adjacent upper and lower turntables (4). A hydraulic motor (6) is fixedly connected to the end of the rotating shaft (5). 6) It is fixed to the inner wall of the extension tube (15). The upper end of the extension tube (15) is provided with a stepped groove (7) and the lower end of the extension tube (15) is provided with a step (16). The step (16) is embedded in the stepped groove (7) of the tube body (1). A through hole (17) is provided in the stepped groove (7) of the extension tube (15). The through hole (17) passes through the step (16). The insertion tube (9) is inserted at the upper end of the hole of the through hole (17). A connecting tube (19) is provided at the lower end of the hole of the through hole (17). The connecting tube (19) is inserted into the insertion hole (10) on the tube body (1).

2. The steel pipe pile fixing and lifting device according to claim 1, characterized in that: The lower outer ring of the cylinder (1) has multiple air jet holes (18) connected to the pipe (20) inside the cylinder (1). The pipe (20) extends to the stepped groove (7) of the cylinder (1). A connecting hole (21) is provided at the stepped groove (7) of the cylinder (1). A tube (22) is provided on the lower surface of the cover plate (8). The tube (22) is inserted into the connecting hole (21). The end of the tube (22) is connected to an external air pump through a hose (23).

3. The steel pipe pile fixing and lifting device according to claim 1, characterized in that: A through hole (24) is opened in the stepped groove (7) of the extension tube (15). The through hole (24) extends to the step (16) and connects to the hollow tube (25). The hollow tube (25) is inserted into the connecting hole (21) in the stepped groove (7) on the tube body (1).

4. The steel pipe pile fixing and lifting device according to claim 1, characterized in that: The outer end face of each extrusion block (2) is arc-shaped, and a rubber pad (26) is fixed to the outer end surface of the extrusion block (2).

5. A steel pipe pile fixing and lifting device according to claim 4, characterized in that: Each of the extrusion blocks (2) has a bolt fixed to the outer end face of the plate (27), the plate (27) is arc-shaped, and a rubber pad (26) is fixed to the surface of the plate (27).

6. The steel pipe pile fixing and lifting device according to claim 2, characterized in that: The lower outer ring of the cylinder (1) is provided with a ring-shaped scraper (28), the inner ring of which is fixed to the outer surface of the cylinder (1) and located below the jet hole (18).

7. A steel pipe pile fixing and lifting device according to claim 6, characterized in that: The outer ring of the scraper (28) has a ring-shaped groove, and a tire bead (29) is provided in the groove. The outer surface of the tire bead (29) protrudes from the groove.

8. A steel pipe pile fixing and lifting device according to claim 6, characterized in that: The lower end of the cylinder (1) is shaped like a frustum.

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