CN209850186U - Tubular pile welded auxiliary assembly - Google Patents

Abstract

The utility model discloses an auxiliary component for tubular pile welding; the upper welding assembly comprises a first lead and a fixed pulley positioned at a high position, the first lead bypasses the fixed pulley, and an upper magnetic head used for adsorbing a lower end plate of an upper pile section is arranged at the free end of the first lead; the lower welding assembly comprises a second lead and a mechanical arm, a lower magnetic head used for adsorbing an upper end plate of the lower pile section is arranged at the free end of the second lead, the mechanical arm comprises a horizontal driving cylinder and a pneumatic finger used for clamping the lower magnetic head, and a piston rod of the horizontal driving cylinder is connected with a fixing part of the pneumatic finger. The auxiliary assembly can enable two wires of a welding circuit to be respectively in butt joint conduction with two end plates of the upper pile section and the lower pile section.

Description

Tubular pile welded auxiliary assembly

Technical Field

The utility model relates to a pile foundation construction technical field among the civil engineering specifically says a tubular pile welded auxiliary assembly.

Background

The pipe pile has various forms such as PHC, PC, PTC and the like, is a mature pile foundation construction process, and has the advantages of simple process, easy control of construction quality, high construction efficiency, short construction period, strong vertical bearing capacity and the like, so the pipe pile is widely applied all over the country.

The tubular pile in the prior art is mainly constructed by welding section by section, specifically, a lower pile section is sunk into a soil body, an upper pile section is suspended to aim at the lower pile section, the upper pile section is lowered to enable two end plates of the two pile sections to be close to each other, a circle is welded around the joint of the two end plates to enable the upper pile section and the lower pile section to be integrated, pile sinking is continued, the other section of pile section is hoisted in place, welding is carried out again, pile sinking is carried out again, and the process is repeated.

The static pressure method is a pile sinking process for pressing a pile into the soil by a static pile machine through counter-force provided by the dead weight of the static pile machine and a counter weight on a frame.

The static pile machine in the prior art comprises a frame and four walking type supporting legs which are arranged at the front, the rear, the left and the right, and are arranged below the frame, a control tower, a hydraulic driving part, a balancing weight and a crane for suspending an upper pile section are arranged on the frame, an alignment hole for the upper pile section to pass through is penetrated through the frame, and a hoop for hooping the upper pile section is arranged on the hydraulic driving part. The working process of the pile driver comprises the steps that the crane lifts and lowers the upper pile section, the upper pile section penetrates through the alignment hole and aligns with the lower pile section, the upper pile section and the lower pile section are welded, the anchor ear is driven by the hydraulic driving part to tightly hold the upper pile section, the supporting legs are contracted again to descend the frame, and the tubular pile is pressed down by utilizing the dead weight and the balance weight of the frame.

The construction method for tubular pile welding in the prior art has the following disadvantages: the welding operation needs to be carried out manually, particularly when the pile is sunk in a static pressure mode, workers need to drill into a narrow space below a frame of the static pressure machine and hold a welding gun to weld a circle in an annular mode, the welding labor intensity is high, the welding site condition is poor, the limitation on the space is large, the operating light condition is not good, the operation is inconvenient, the welding quality is difficult to guarantee, and even potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a tubular pile welded auxiliary assembly that can switch on two wires of welding circuit with two end plate butt joints of upper and lower pile knots respectively.

The utility model provides an auxiliary component for tubular pile welding; the upper welding assembly comprises a first lead and a fixed pulley positioned at a high position, the first lead bypasses the fixed pulley, and an upper magnetic head used for adsorbing a lower end plate of an upper pile section is arranged at the free end of the first lead; the lower welding assembly comprises a second lead and a mechanical arm, a lower magnetic head used for adsorbing an upper end plate of the lower pile section is arranged at the free end of the second lead, the mechanical arm comprises a horizontal driving cylinder and a pneumatic finger used for clamping the lower magnetic head, and a piston rod of the horizontal driving cylinder is connected with a fixing part of the pneumatic finger.

Compared with the prior art, the auxiliary assembly for tubular pile welding has the following advantages.

The auxiliary assembly realizes butt joint and separation of two leads of a welding circuit and two end plates of an upper pile section and a lower pile section, specifically, a first lead is placed down by using a fixed pulley suspended at a high position, an upper magnetic head is made to descend to the elevation of a lower end plate of the upper pile section, and the upper magnetic head and the lower end plate are in automatic magnetic attraction butt joint; the first lead wire is pulled, so that the first lead wire can be automatically separated from the lower end plate; the pneumatic fingers are advanced or retracted towards the driving cylinder by utilizing the level of the mechanical arm, and the lower magnetic head is grasped or loosened by opening and closing the fingers, so that the magnetic adsorption butt joint of the lower magnetic head and the upper end plate of the lower pile section can be completed by grasping and advancing the lower magnetic head; then the pneumatic finger is loosened and retracted, so that the distance between the mechanical arm and the welding point can be kept during welding, and welding damage is avoided; after welding is finished, the pneumatic finger is advanced again, the lower magnetic head is grasped tightly, and then the pneumatic finger is retracted, so that the lower magnetic head is completely separated from the upper end plate, and interference to subsequent pile sinking is avoided; moreover, the magnetic head and the corresponding end plate are reasonably designed in an adsorption mode, the adsorption force is moderate, the current can be used for further increasing the suction force during electrifying so as to ensure that the lead and the corresponding end plate are firmly connected and the welding is stable, and the lead can be easily pulled or pulled to be separated by a driving cylinder when the lead needs to be separated after the welding is completed and the power is cut off; moreover, the arrangement mode of the two leads is very ingenious, the first lead vertically advances along the central hole of the upper pile section, the second lead horizontally advances outside the pipe wall of the lower pile section, the two leads are positioned inside and outside one pile section, and cannot be contacted in advance under the separation of the side wall of the pile section, so that the possibility of mistakenly contacting and short-circuiting before welding is avoided, and the safety is improved.

The significance that this application realizes that two wires of welding circuit and two end plates butt joint of upper and lower pile section switch on lies in providing the equipment foundation for new welding mode. Specifically, two end plates can be electrified by two leads, so that the two end plates which are originally close to each other are electrified and short-circuited, and the generated high temperature melts the solder between the two end plates to realize welding; the process of manually and annularly welding a circle in the prior art is completely replaced, the production efficiency is greatly improved, the construction period is shortened, the labor intensity is reduced, and workers are relieved from a narrow and narrow severe welding environment.

The upper welding assembly preferably further comprises a winch, and the non-free end of the first lead is connected with the winch; therefore, the winch can be used for controlling the first lead to ascend and descend in a forward and reverse rotating mode, and the magnetic head on the first lead is in magnetic attraction butt joint with and automatically separated from the lower end plate of the upper pile section.

The lower welded assembly is preferably: the mechanical arm further comprises a vertical driving cylinder, and a piston rod of the vertical driving cylinder is fixed with a cylinder body of the horizontal driving cylinder; therefore, the height of the pneumatic finger and the height of the lower magnetic head can be adjusted by utilizing the vertical driving cylinder, so that the pneumatic finger and the lower magnetic head are accurately aligned to the upper end plate of the lower pile section, and the butt joint accuracy of the lower magnetic head and the upper end plate of the lower pile section is improved.

The lower welding component further preferably comprises a transverse track and a trolley which is in sliding fit with the track, and a fixing part of the vertical driving cylinder is arranged on the trolley; the transverse track is vertical to the horizontal driving cylinder; therefore, the moving range of the mechanical arm is firstly increased, the distance between the mechanical arm and a welding point during welding is enlarged, welding damage of the mechanical arm is further avoided, and the track and the horizontal driving cylinder are vertically distributed, so that the whole lower welding assembly is compact and reasonable in layout.

The lower magnetic head preferably comprises a cylinder shell, wherein a through hole is formed in a back plate of the cylinder shell, a second lead extends into the cylinder shell through the through hole, a convex contact is fixed at the free end of the second lead, a pressure spring is arranged between a large diameter part of the convex contact and the back plate of the cylinder shell, a limiting magnetic ring is arranged at a front opening of the cylinder shell, the small diameter part of the convex contact extends out of a central hole of the limiting magnetic ring, and an annular step of the convex contact is clamped with the central hole of the limiting magnetic ring; like this, when the magnetic spacing ring adsorbs the upper end plate, under the pressure spring effect, the convex contact is ensured to support with the upper end plate and is leaned on firmly, and then ensures second wire and upper end plate firm in connection, further improves welding stability.

Preferably, the fixed pulley is arranged at the top of a mast of a crane of the static pressure pile machine, the winch is arranged on a rack of the static pressure pile machine, and the track, the trolley and the mechanical arm are all positioned below the rack; therefore, the auxiliary assembly is integrally integrated and installed in the static pile driver, and the static pile driver is a machine which exists in a piling site at a high probability, so that other mechanical equipment is not added as far as possible, only improvement is made on the original static pile driver in the site, the existing mechanical equipment is reasonably utilized, and the construction cost is controlled as far as possible; and the static pile machine can also provide static pressure for the pile sections during welding, so that the welding and static pressure procedures are reasonably integrated, the welding quality is improved, the labor efficiency is improved, and the static pile machine has huge economic value and popularization potential.

Drawings

Fig. 1 is the structure schematic diagram of the auxiliary assembly for pipe pile welding of the present invention.

Fig. 2 is the structure schematic diagram of the utility model discloses tubular pile welded auxiliary assembly after certain angle of deflection.

Fig. 3 is the utility model discloses tubular pile welded auxiliary assembly's elevation structure schematic diagram.

Fig. 4 is the structure diagram of the lower welding assembly of the auxiliary assembly for pipe pile welding of the utility model.

Fig. 5 is a schematic view of the cross-sectional structure of the lower magnetic head of the auxiliary assembly for pipe pile welding according to the present invention.

The device comprises a frame 1, a frame 2, supporting legs 3, a control tower 4, a hydraulic driving part 5, a crane 6, a hoop 7, a first lead 8, a fixed pulley 9, an upper pile section 10, a lower end plate 11, an upper magnetic head 12, a second lead 13, a lower pile section 14, an upper end plate 15, a lower magnetic head 16, a horizontal driving cylinder 17, a pneumatic finger 18, a winch 19, a vertical driving cylinder 20, a transverse track 21, a trolley 22, a barrel shell 23, a convex contact 24, a pressure spring 25, a limiting magnetic ring 26 and an annular step.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the utility model discloses tubular pile welded auxiliary assembly, it includes welding assembly and lower welding assembly.

The upper welding assembly includes a first wire 7, a hoist 18, and a crown block 8 located at a high position. The first lead 7 passes around the fixed pulley 8, and the free end of the first lead 7 is provided with an upper magnetic head 11 for adsorbing a lower end plate 10 of an upper pile section 9 of the tubular pile; the non-free end of the first wire 7 is connected to a winch 18. More specifically, the first wire 7 is wound around a rotating shaft of the hoist 18 and includes a conductor portion thereon, and a metal core of a non-free end of the first wire 7 is fixed to the conductor portion of the rotating shaft and the conductor portion is connected to a positive electrode or a negative electrode of a power source of a welding circuit.

The lower weld assembly includes a second wire 12, a robotic arm, a transverse rail 20, and a trolley 21 that is a sliding fit within the rail 20. The free end of the second lead 12 is provided with a lower magnetic head 15 for adsorbing an upper end plate 14 of the lower pile section 13, and the non-free end of the second lead 12 is connected with the negative pole or the positive pole of the welding circuit power supply.

The robot arm comprises a vertical drive cylinder 19, a horizontal drive cylinder 16 and a pneumatic finger 17 for gripping the lower head 15. The fixed part of the vertical driving cylinder 19 is arranged on the trolley 21, the piston rod of the vertical driving cylinder 19 is fixed with the cylinder body of the horizontal driving cylinder 16, and the piston rod of the horizontal driving cylinder 16 is connected with the fixed part of the pneumatic finger 17. The transverse rails 20 are perpendicular to the horizontal drive cylinder 16.

The lower magnetic head 15 preferably comprises a cylinder shell 22, a through hole is arranged on the rear plate of the cylinder shell 22, the second lead 12 extends into the cylinder shell 22 through the through hole, a convex contact 23 is fixed at the free end of the second lead 12, a pressure spring 24 is arranged between the large diameter part of the convex contact 23 and the rear plate of the cylinder shell 22, a limit magnetic ring 25 is arranged at the front opening of the cylinder shell 22, the small diameter part of the convex contact 23 extends out of the central hole of the limit magnetic ring 25, and the annular step 26 of the convex contact 23 is tightly clamped with the central hole of the limit magnetic ring 25.

The auxiliary assembly for tubular pile welding is preferably installed and integrated in the static pile machine. Specifically, the static pile press comprises a frame 1 and four groups of walking type supporting legs 2 arranged below the frame 1, wherein the four groups of walking type supporting legs 2 are distributed in the front, back, left and right directions of the frame 1. The frame 1 is provided with a control tower 3, a hydraulic driving part 4, a balancing weight and a crane 5, an alignment hole for a pile section of the tubular pile to pass through is penetrated through the frame 1, and the hydraulic driving part 4 is provided with a hoop 6 for hooping the pile section. The fixed pulley 8 is preferably installed at the top of the mast of the crane 5 of the static pile machine, but the fixed pulley 8 may also be installed at another position, such as directly erecting a column on the ground, and the fixed pulley 8 is installed on the column. The winch 18 is preferably mounted on the frame 1 of the hydrostatic pile machine, but may of course also be mounted directly on the ground. The track 20, the trolley 21 and the robot arm are all located below the frame 1.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the method for welding a tubular pile by using the auxiliary assembly for welding a tubular pile of the present invention includes the following steps.

The lower pile section 13 is sunk into the soil body, the upper pile section 9 is suspended by the crane 5 to pass through the alignment hole of the frame 1, after the upper pile section and the lower pile section are aligned, the first lead 7 is lowered by the winch 18 around the fixed pulley 8, the upper magnetic head 11 of the first lead 7 descends along the center hole of the upper pile section 9, and when the upper magnetic head 11 descends to the same elevation as the lower end plate 10 of the upper pile section 9, the upper magnetic head 11 can automatically adsorb the lower end plate 10, so that the butt joint of the first lead 7 and the lower end plate 10 of the upper pile section 9 is completed.

At this moment, the annular solder can be placed on the upper end plate 14 of the lower pile section 13, or before each pile section is lifted, the solder is bonded on the upper end plate 14 at the top of the pile section, so that after the pile section is pressed into the soil, the solder is automatically positioned on the upper end plate 14 of the lower pile section 13, and thus, the solder is convenient to place, and a constructor does not need to drill into a narrow space below the frame 1.

Then the upper pile section 9 is lowered, so that the two end plates of the upper pile section and the lower pile section are closed.

And starting a vertical driving cylinder 19 of the mechanical arm, enabling the lower magnetic head 15 of the second lead 12 to be located at the same elevation as the upper end plate 14 of the lower pile section 13, driving the horizontal driving cylinder 16, enabling the lower magnetic head 15 to be abutted and adsorbed with the upper end plate 14 of the lower pile section 13, loosening the pneumatic finger 17, and returning the horizontal driving cylinder 16 or the returning trolley 21 to enable the mechanical arm to avoid and keep away from the welding point.

The switch of the welding circuit is switched on, so that the upper end plate 14 and the lower end plate 10 are electrified and short-circuited, and the generated high temperature melts the welding flux between the two end plates to realize welding; and in the welding process, the hoop 6 tightly holds the upper pile section 9, the contraction walking type supporting leg 2 descends the frame 1, and the self weight of the static pressure machine and the weight of the balancing weight are used for providing pressure for the welding position.

Claims (6)

1. The utility model provides a tubular pile welded auxiliary assembly which characterized in that: the welding device comprises an upper welding assembly and a lower welding assembly, wherein the upper welding assembly comprises a first lead (7) and a fixed pulley (8) positioned at a high position, the first lead (7) bypasses the fixed pulley (8), and the free end of the first lead (7) is provided with an upper magnetic head (11) for adsorbing a lower end plate (10) of an upper pile section (9); the lower welding assembly comprises a second lead (12) and a mechanical arm, a lower magnetic head (15) used for adsorbing an upper end plate (14) of the lower pile section (13) is arranged at the free end of the second lead (12), the mechanical arm comprises a horizontal driving cylinder (16) and a pneumatic finger (17) used for clamping the lower magnetic head (15), and a piston rod of the horizontal driving cylinder (16) is connected with a fixing part of the pneumatic finger (17).

2. The auxiliary assembly for tubular pile welding according to claim 1, wherein: the upper welding assembly further comprises a winch (18), and the non-free end of the first wire (7) is connected with the winch (18).

3. The auxiliary assembly for tubular pile welding according to claim 1, wherein: the mechanical arm further comprises a vertical driving cylinder (19), and a piston rod of the vertical driving cylinder (19) is fixed with a cylinder body of the horizontal driving cylinder (16).

4. The auxiliary assembly for tubular pile welding according to claim 3, wherein: the lower welding assembly also comprises a transverse track (20) and a trolley (21) which is in sliding fit with the track (20), and the fixed part of the vertical driving cylinder (19) is arranged on the trolley (21); the transverse rail (20) is perpendicular to the horizontal drive cylinder (16).

5. The auxiliary assembly for tubular pile welding according to claim 1, wherein: the lower magnetic head (15) comprises a cylinder shell (22), a through hole is formed in the rear plate of the cylinder shell (22), a second lead (12) extends into the cylinder shell (22) through the through hole, a convex contact (23) is fixed at the free end of the second lead (12), a pressure spring (24) is arranged between the large-diameter part of the convex contact (23) and the rear plate of the cylinder shell (22), a limiting magnetic ring (25) is arranged at the front opening of the cylinder shell (22), the small-diameter part of the convex contact (23) extends out of the central hole of the limiting magnetic ring (25), and an annular step (26) of the convex contact (23) is clamped with the central hole of the limiting magnetic ring (25).

6. The auxiliary assembly for tubular pile welding according to any one of claims 1-5, wherein: the fixed pulley (8) is arranged at the top of a mast of a crane (5) of the static pressure pile machine, the winch (18) is arranged on a rack (1) of the static pressure pile machine, and the track (20), the trolley (21) and the mechanical arm are all positioned below the rack (1).