Drill rod surface rust removal device

Abstract

The utility model discloses a drill rod surface derusting device relates to drill rod surface derusting field, including support unit, push unit and derusting unit, the support unit includes base and N back-up roll that is used for supporting drill rod, back-up roll front end and back end are respectively provided with support frame, the support frame is fixed mounting base top, push unit and derusting unit. According to the drill rod derusting device, the rotatable supporting rollers are adopted, multi-point supporting is provided in the length direction of a drill rod, shaking of the drill rod during moving is effectively reduced, stability in the derusting process is guaranteed, the arc-shaped pressing plate is matched with the supporting rollers, the drill rod can be transversely pushed, and the drill rod can be conveniently derusted. And the arc-shaped pressing plate can also apply downward pressure, so that the drill rod is further prevented from shaking in the rust removal process, the positioning precision is improved, and rust removal on the surface of the drill rod is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of drill pipe surface rust removal, concretely relates to a drill pipe surface rust removal device. BACKGROUND

[0002] As a key component in the field of oil drilling, geological exploration and the like, the drill pipe is long-term operated in a high corrosive environment and is prone to rust on the surface. Rust not only reduces the structural strength of the drill pipe, but also aggravates the friction resistance in the well, which seriously affects the drilling efficiency and safety.

[0003] For example, Chinese patent CN215942503U discloses a device for rust removal on the surface of an oil drill pipe, which comprises a fixed base, a first motor is installed at one end of the fixed base, a transmission rod is installed inside the fixed base, the transmission rod is connected to the output end of the first motor by a key, a clamp support is installed inside the fixed base, and the transmission rod is screwed to the inner wall of the clamp support.

[0004] When the device is used to remove rust from the drill pipe, the clamp is adjusted to be connected to the drill pipe and to drive the drill pipe to rotate, and the drill pipe can be moved at the same time. Since the drill pipe has a certain length and weight, on the one hand, a great clamping force is required to prevent slipping when the clamp is clamped to the drill pipe, but excessive clamping force may cause the drill pipe surface to be crushed, and on the other hand, the drill pipe lacks stable support during movement.

[0005] Therefore, the deficiencies of the device are improved accordingly. UTILITY MODEL CONTENTS

[0006] In view of the problems that, when the device is used to remove rust from the drill pipe, on the one hand, a great clamping force is required to prevent slipping when the clamp is clamped to the drill pipe, but excessive clamping force may cause the drill pipe surface to be crushed, and on the other hand, the drill pipe lacks stable support during movement, the utility model provides a drill pipe surface rust removal device.

[0007] The utility model adopts the scheme to solve its technical problem: a drill pipe surface rust removal device, including support unit, push unit and rust removal unit, the support unit includes base and N support rollers for supporting drill pipe, the front and rear ends of support roller are provided with support frame respectively, support frame is fixedly installed at the top of base, support roller is rotatably installed between front and rear two support frames;

[0008] The push unit comprises a U-shaped frame, an electric cylinder, a driving assembly, and an arc-shaped pressing plate for pressing the drill pipe. The U-shaped frame is fixedly installed on the top of the base, and the electric cylinder is fixedly installed on the top of the U-shaped frame. The piston rod of the electric cylinder passes through the U-shaped frame and is fixedly installed with a mounting seat. The arc-shaped pressing plate is arranged below the mounting seat and above the support rollers. The driving assembly is installed on the mounting seat and connected with the arc-shaped pressing plate for driving the arc-shaped pressing plate to move laterally.

[0009] The rust removal unit comprises a workbench, a rotating cylinder and a power assembly, the workbench is arranged on one side of the base and close to the pushing unit, two bearing seats are sleeved on the rotating cylinder, the bearing seats are installed on the top of the workbench, a plurality of detachable rust removal steel brushes are installed in the inner cavity of the rotating cylinder, the rust removal steel brushes are in contact with the outer surface of the drill rod, the power assembly is installed on the workbench and is in transmission connection with the rotating cylinder, and is used for driving the rotating cylinder to rotate.

[0010] Preferably, the base is composed of two square steels and a supporting rod welded between the two square steels.

[0011] Preferably, the mounting seat is provided with an upper through hole and a lower through hole.

[0012] Preferably, the driving assembly comprises a hydraulic rod and a U-shaped rod, the U-shaped rod is arranged in the lower through hole and is fixedly connected with the arc-shaped pressing plate at two bottom ends, the hydraulic rod is fixedly installed on the mounting seat, a piston rod of the hydraulic rod passes through the upper through hole and is fixedly connected with the U-shaped rod through a connecting head.

[0013] Preferably, the power assembly comprises a driving motor and a large synchronous wheel sleeved on the rotating cylinder, the driving motor is installed on the top of the workbench, a small synchronous wheel is sleeved on an output shaft of the driving motor, and the large synchronous wheel and the small synchronous wheel are in transmission connection through a synchronous belt.

[0014] Preferably, a plurality of U-shaped clamps are installed on the inner wall of the rotating cylinder, and the rust removal steel brushes and the U-shaped clamps are connected through bolts.

[0015] Compared with the prior art, the rust removal unit has the following beneficial effects:

[0016] 1. The rust removal unit adopts a plurality of rotatable supporting rollers to provide multi-point support along the length direction of the drill rod, effectively reduces the shaking of the drill rod during movement, ensures the stability of the rust removal process, and the arc-shaped pressing plate cooperates with the supporting rollers to not only horizontally push the drill rod, but also apply downward pressure, further prevents the drill rod from shaking during the rust removal process, improves the positioning accuracy, and facilitates the rust removal of the surface of the drill rod.

[0017] 2. The power assembly drives the rotating cylinder to rotate at high speed, so that the steel brushes are in full contact with the surface of the drill rod, realizes 360-degree dead-angle-free polishing and rust removal, and ensures the rust removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the rust removal unit;

[0019] Figure 2 It is a workbench top view structural schematic diagram of the rust removal unit;

[0020] Figure 3The utility model discloses push unit front view cross section structure schematic drawing.

[0021] Figure 4 The utility model discloses rotary cylinder left view amplification structure schematic drawing.

[0022] In the figure: 1 base, 21 support frame, 22 support roller, 31 U type frame, 32 electric cylinder, 33 hydraulic rod, 34 U type rod, 35 arc pressing plate, 36 connecting head, 37 mounting seat, 4 workbench, 5 rotary cylinder, 61 drive motor, 62 small synchronous wheel, 63 big synchronous wheel, 64 synchronous belt, 7 bearing seat, 81 U type card, 82 bolt, 83 rust removal steel brush. DETAILED DESCRIPTION

[0023] The utility model is further explained below in connection with the drawings and examples.

[0024] Please refer to Figures 1-4 The utility model provides a kind of drill pipe surface rust removal device technical scheme:

[0025] Example one:

[0026] According to Figures 1-4 As shown, including support unit, push unit and rust removal unit, support unit includes base 1 and N support roller 22 for supporting drill pipe, base 1 is composed of two square steels and support bar welded and fixed between two square steels, to ensure the structural strength and stability of base 1.

[0027] The front and rear ends of support roller 22 are provided with support frame 21 respectively, support frame 21 is fixedly installed on the top of base 1, the front and rear ends of support roller 22 are respectively sleeved with bearing, two bearings are installed on the front and rear support frames 21 respectively, drill pipe is stably supported by multiple support rollers 22, effectively disperses drill pipe weight, reduces deformation risk, and when push unit drives drill pipe to move horizontally, the rolling friction of support roller 22 can reduce the moving resistance of drill pipe, to avoid jamming.

[0028] Push unit includes U type frame 31, electric cylinder 32, drive assembly and arc pressing plate 35 for pressing down drill pipe, U type frame 31 is fixedly installed on the top of base 1, electric cylinder 32 is fixedly installed on the top of U type frame 31, the piston rod thereof passes through U type frame 31 and is fixedly installed with mounting seat 37, drives mounting seat 37 to move up and down by controlling the extension of electric cylinder 32, upper through hole and lower through hole are formed in mounting seat 37.

[0029] The arc-shaped pressing plate 35 is arranged below the mounting base 37 and above the supporting rollers 22, the driving assembly comprises a hydraulic rod 33 and a U-shaped rod 34, the U-shaped rod 34 is arranged in the lower through hole and is fixedly connected with the arc-shaped pressing plate 35 at two bottom ends, the arc-shaped pressing plate 35 is supported by the U-shaped rod 34, the hydraulic rod 33 is fixedly installed on the mounting base 37, the piston rod of the hydraulic rod 33 penetrates through the upper through hole and is fixedly connected with the U-shaped rod 34 through the connecting head 36, the U-shaped rod 34 and the arc-shaped pressing plate 35 are driven to move laterally by controlling the extension and contraction of the hydraulic rod 33, when the hydraulic rod 33 is elongated, the drill rod is pushed to move a distance by the arc-shaped pressing plate 35.

[0030] The rust removal unit comprises a workbench 4, a rotating cylinder 5 and a power assembly, the workbench 4 is arranged on one side of the base 1 and is arranged close to the pushing unit, two bearing seats 7 are sleeved on the rotating cylinder 5, the bearing seats 7 are installed on the top of the workbench 4, the rotating cylinder 5 is stably supported by the two bearing seats 7, so that the rotating cylinder 5 can keep stability during rotation, a plurality of detachable rust removal steel brushes 83 are installed in the inner cavity of the rotating cylinder 5, so that the rust removal steel brushes 83 can be replaced, and the rust removal steel brushes 83 are in contact with the outer surface of the drill rod.

[0031] The power assembly comprises a driving motor 61 and a large synchronous wheel 63 sleeved on the rotating cylinder 5, the driving motor 61 is installed on the top of the workbench 4, a small synchronous wheel 62 is sleeved on the output shaft of the driving motor 61, the large synchronous wheel 63 and the small synchronous wheel 62 are transmissionally connected through a synchronous belt 64, the small synchronous wheel 62 is driven to rotate by the driving motor 61, the large synchronous wheel 63 and the rotating cylinder 5 are driven to rotate under the transmission action of the synchronous belt 64, so that the steel brush is in full contact with the surface of the drill rod, 360-degree dead-angle-free polishing and rust removal are realized, and the rust removal effect is ensured.

[0032] In specific use, the drill rod surface rust removal device is used, the drill rod is first placed on the plurality of supporting rollers 22 and the one end of the drill rod is inserted into the rotating cylinder 5 and is in contact with the plurality of rust removal steel brushes 83, then the extension of the electric cylinder 32 is controlled, the mounting base 37 and the arc-shaped pressing plate 35 are driven to move downwards, the arc-shaped pressing plate 35 is in contact with the drill rod, and certain downward pressure is provided;

[0033] Then the driving motor 61 is started, the large synchronous wheel 63 is driven to rotate through the small synchronous wheel 62 and the synchronous belt 64, and the rotating cylinder 5 is driven to rotate at high speed, the rust removal steel brushes 83 in the inner cavity of the rotating cylinder 5 rotate with the rotating cylinder 5 and are in friction with the surface of the drill rod, and omnibearing rust removal is realized;

[0034] After rust removal is performed on a section of the drill rod, the driving motor 61 is temporarily turned off, the hydraulic rod 33 is controlled to be elongated, the U-shaped rod 34 and the arc-shaped pressing plate 35 are pushed to move laterally, the drill rod is moved forward by a distance along the supporting rollers 22, and the drill rod which has not been subjected to rust removal is pushed into the rotating cylinder 5;

[0035] Then the contraction of the electric cylinder 32 is controlled to make the arc-shaped pressing plate 35 move upward, the contraction of the hydraulic rod 33 is controlled to make the arc-shaped pressing plate 35 move rightward, the driving motor 61 is started again, and the extension of the electric cylinder 32 is controlled to make the arc-shaped pressing plate 35 contact with the drill rod, so as to repeat the pushing action until the rust removal of the drill rod is completed.

[0036] Example Two

[0037] On the basis of Example One, as shown in Figure 4 a plurality of U-shaped clamps 81 are installed on the inner wall of the rotating cylinder 5, and the rust removal steel brush 83 and the U-shaped clamps 81 are connected through bolts 82.

Claims

1. A rust removal device for drill pipe surfaces, comprising a support unit, a pushing unit, and a rust removal unit, characterized in that: The support unit includes a base and N support rollers for supporting the drill rod. Support frames are provided at the front and rear ends of the support rollers respectively. The support frames are fixedly installed on the top of the base, and the support rollers are rotatably installed between the front and rear support frames. The pushing unit includes a U-shaped frame, an electric cylinder, a drive assembly, and an arc-shaped pressure plate for pressing down the drill rod. The U-shaped frame is fixedly installed on the top of the base, the electric cylinder is fixedly installed on the top of the U-shaped frame, and its piston rod passes through the U-shaped frame and is fixedly installed on the mounting base. The arc-shaped pressure plate is located below the mounting base and above the support roller. The drive assembly is installed on the mounting base and connected to the arc-shaped pressure plate for driving the arc-shaped pressure plate to move laterally. The rust removal unit includes a worktable, a rotating cylinder, and a power unit. The worktable is located on one side of the base and close to the pushing unit. Two bearing seats are mounted on the rotating cylinder and installed on the top of the worktable. Multiple detachable rust removal steel brushes are installed inside the rotating cylinder and contact the outer surface of the drill rod. The power unit is installed on the worktable and is connected to the rotating cylinder for driving the rotating cylinder to rotate.

2. The rust removal device for drill pipe surfaces according to claim 1, characterized in that: The base consists of two square steel bars and a support rod welded and fixed between the two square steel bars.

3. The rust removal device for drill pipe surfaces according to claim 1, characterized in that: The mounting base has an upper through hole and a lower through hole.

4. The rust removal device for drill pipe surfaces according to claim 3, characterized in that: The drive assembly includes a hydraulic rod and a U-shaped rod. The U-shaped rod is disposed in the lower through hole, and its two bottom ends are fixedly connected to the arc-shaped pressure plate. The hydraulic rod is fixedly installed on the mounting base, and its piston rod passes through the upper through hole and is fixedly connected to the U-shaped rod through the connector.

5. The rust removal device for drill pipe surfaces according to claim 1, characterized in that: The power assembly includes a drive motor and a large synchronous pulley mounted on the rotating cylinder. The drive motor is mounted on the top of the worktable, and a small synchronous pulley is mounted on its output shaft. The large synchronous pulley and the small synchronous pulley are connected by a synchronous belt drive.

6. The rust removal device for drill pipe surfaces according to claim 1, characterized in that: Multiple U-shaped clips are installed on the inner wall of the rotating cylinder, and the rust-removing steel brush and the U-shaped clips are connected by bolts.

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