A steel pipe drawing boss device

Abstract

The present invention relates to the technical field of steel pipe processing equipment, and in particular to a steel pipe drawing boss device. The device comprises a fixed chassis, a driving oil cylinder and a drawing mechanism; a driving oil cylinder with a downward stroke is arranged above the fixed chassis, and a drawing mechanism is fixed to the driving end of the driving oil cylinder. The present invention can conveniently and quickly open a hole on a steel pipe and draw a boss, avoiding welding of intersecting lines, and the deformation of welding is small.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing equipment, and in particular to a steel pipe drawing boss device. Background Art

[0002] In real applications, steel pipes often need to extend branches on the pipe wall. Currently, most processing methods on the market are to drill holes in the steel pipe, cut the flanges or ends of the steel pipes to be welded into the shape of intersecting lines and weld them to the main pipe, but this welding method has several major disadvantages:

[0003] 1. The welding method is all-position welding, which has high requirements on welding workers and is prone to leakage.

[0004] 2. Flanges and steel pipes need to be processed into intersecting line shapes before they can be welded, and intersecting line welding is difficult and requires high standards from workers.

[0005] 3. The welding deformation of this type of steel pipe is large. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a steel pipe drawing boss device.

[0007] The technical solution for achieving the purpose of the present invention is: a steel pipe drawing boss device, comprising a fixed chassis, a driving cylinder and a drawing mechanism; a driving cylinder with a downward stroke is arranged above the fixed chassis, and a drawing mechanism is fixed to the driving end of the driving cylinder.

[0008] Furthermore, the fixed chassis includes a flange chassis and screw rods; the flange chassis and the driving cylinder are fixedly connected via a plurality of evenly distributed screw rods.

[0009] Furthermore, the driving cylinder includes a cylinder barrel, a piston, a piston rod and an end cover; the bottom of the end cover is fixedly connected to the screw rod, the cylinder barrel is sealed and fixed above the end cover, a piston is arranged inside the cylinder barrel, a piston rod is fixed under the piston and passes downward through the end cover, a first oil port is arranged at the upper end of the cylinder barrel, and a second oil port is arranged on the end cover.

[0010] Furthermore, the drawing mechanism includes a suspension block, a T-shaped hanger and a die head; the upper end of the T-shaped hanger is provided with a suspension block, the lower end is fixed with a die head, and the suspension block is threadedly fixed to the top end of the piston rod.

[0011] Furthermore, the T-shaped hanger has a positioning recess on its side inside the suspension block, and the suspension block has a positioning hole relative to the positioning recess. The positioning hole is provided with fastening bolts, springs and positioning steel balls in sequence from the outside to the inside, and the positioning steel balls are in elastic contact with the positioning recess to play a positioning and fixing role.

[0012] Furthermore, a rectangular through hole is opened at the bottom of the suspension block, a cylindrical cavity is opened inside, and the top end of the T-shaped suspension block is configured as a rectangular block corresponding to the rectangular through hole.

[0013] Furthermore, the die head is in the shape of an inverted funnel.

[0014] Furthermore, a plurality of lifting ears are evenly distributed around the upper end of the end cover.

[0015] Furthermore, there are three lifting ears in total.

[0016] Furthermore, there are 4 screws in total.

[0017] After adopting the above technical solution, the present invention has the following positive effects:

[0018] (1) The present invention can conveniently and quickly drill holes in steel pipes and avoid welding of intersecting lines, and the deformation of welding is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 for Figure 2 BB section view;

[0023] Figure 4 for Figure 3 A partial enlarged view of

[0024] Figure 5 It is a right side view of the present invention;

[0025] Figure 6 for Figure 5 AA section view;

[0026] Figure 7 This is a schematic diagram of the structure of a T-type crane;

[0027] Figure 8 It is a structural diagram of the suspension block. DETAILED DESCRIPTION

[0028] See Figure 1 , Figure 2 , Figure 3 and Figure 5The present invention comprises a fixed chassis 1, a driving cylinder 2 and a pulling mechanism 3; a driving cylinder 2 with a downward stroke is arranged above the fixed chassis 1, and a pulling mechanism 3 is fixed to the driving end of the driving cylinder 2. The fixed chassis 1 comprises a flange chassis 11 and a screw rod 12; the flange chassis 11 and the driving cylinder 2 are fixedly connected by a plurality of evenly distributed 4 screw rods 12. The pulling mechanism 3 comprises a suspension block 31, a T-shaped suspension 32 and a die head 33; a suspension block 31 is mounted on the upper end of the T-shaped suspension 32, and a die head 32 is fixed on the lower end, and the suspension block 31 and the top end of the piston rod 23 are threadedly fixed. The die head 33 is in the shape of an inverted funnel. Three lifting ears 4 are evenly distributed around the upper end of the end cover 24.

[0029] See Figure 6 The driving oil cylinder 2 comprises a cylinder barrel 21, a piston 22, a piston rod 23 and an end cover 24; the bottom of the end cover 24 is fixedly connected to the screw rod 12, the cylinder barrel 21 is sealed and fixed above the end cover 24, the piston 22 is arranged inside the cylinder barrel 21, the piston rod 23 passing through the end cover 24 downward is fixed under the piston 22, the upper end of the cylinder barrel 21 is provided with a first oil port 25, and the end cover 24 is provided with a second oil port 26. The driving oil cylinder 2 is externally connected to a hydraulic station.

[0030] See Figure 4 and Figure 7 A positioning concave point 321 is provided on the side of the T-shaped hanger 32 located inside the suspension block 31, and a positioning hole 311 is provided on the suspension block 31 relative to the positioning concave point 321. A fastening bolt 312, a spring 313 and a positioning steel ball 314 are arranged in sequence from the outside to the inside in the positioning hole 311. The positioning steel ball 314 is in elastic contact with the positioning concave point 321 to play a positioning and fixing role.

[0031] See Figure 8 A rectangular through hole 315 is opened at the bottom of the suspension block 31 , and a cylindrical cavity is opened inside. The top of the T-shaped suspension 32 is set as a rectangular block 322 corresponding to the rectangular through hole 315 .

[0032] The working principle of the present invention is:

[0033] 1. Punch holes in the steel pipe according to production requirements;

[0034] 2. Insert the T-shaped hanger 32 into the hole of the steel pipe;

[0035] 3. Connect the die head 33 with the T-shaped hanger 32 through the thread inside the steel pipe and tighten it;

[0036] 4. Start the hydraulic station to drive the oil cylinder to move and pull the die head 33 out of the steel pipe;

[0037] 5. The drawing is completed and the drawing of the steel pipe boss is completed.

[0038] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe drawing boss device, characterized in that: It comprises a fixed chassis (1), a driving cylinder (2) and a pulling mechanism (3); a driving cylinder (2) with a downward stroke is arranged above the fixed chassis (1), and a pulling mechanism (3) is fixed to the driving end of the driving cylinder (2); The fixed chassis (1) comprises a flange chassis (11) and screw rods (12); the flange chassis (11) and the driving cylinder (2) are fixedly connected via a plurality of evenly distributed screw rods (12); The driving oil cylinder (2) comprises a cylinder barrel (21), a piston (22), a piston rod (23) and an end cover (24); the bottom of the end cover (24) is fixedly connected to the screw rod (12); the cylinder barrel (21) is sealed and fixed above the end cover (24); a piston (22) is arranged inside the cylinder barrel (21); a piston rod (23) is fixed below the piston (22) and passes downward through the end cover (24); a first oil port (25) is arranged at the upper end of the cylinder barrel (21); and a second oil port (26) is arranged on the end cover (24); The drawing mechanism (3) comprises a suspension block (31), a T-shaped hanger (32) and a die head (33); the upper end of the T-shaped hanger (32) is sleeved with the suspension block (31), and the lower end is fixed with the die head (33); the suspension block (31) and the top end of the piston rod (23) are fixed by threads.

2. The steel pipe drawing boss device according to claim 1, characterized in that: The T-shaped hanger (32) is provided with a positioning concave point (321) on its side surface located inside the suspension block (31); the suspension block (31) is provided with a positioning hole (311) at a position relative to the positioning concave point (321); a fastening bolt (312), a spring (313) and a positioning steel ball (314) are sequentially arranged in the positioning hole (311) from the outside to the inside; the positioning steel ball (314) and the positioning concave point (321) are in elastic contact, thereby playing a role in positioning and fixing.

3. The steel pipe drawing boss device according to claim 1 or 2, characterized in that: The bottom of the suspension block (31) is provided with a rectangular through hole (315) and the interior is provided with a cylindrical cavity. The top of the T-shaped suspension (32) is provided with a rectangular block (322) corresponding to the rectangular through hole (315).

4. The steel pipe drawing boss device according to claim 3, characterized in that: The die head (33) is in the shape of an inverted funnel.

5. The steel pipe drawing boss device according to claim 4, characterized in that: A plurality of lifting ears (4) are evenly distributed around the upper end of the end cover (24).

6. The steel pipe drawing boss device according to claim 5, characterized in that: There are three lifting ears (4) in total.

7. The steel pipe drawing boss device according to claim 1, characterized in that: There are four screw rods (12) in total.

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