A pipe threading device and working method for thermal insulation elbow

Abstract

The invention relates to a pipe threading device and a working method for a thermal insulation bent pipe, which belongs to the technical field of thermal insulation bent pipe processing, and solves the problem that the outer pipe body is easy to move when the existing pipe threading device is threading the pipe. The invention comprises a first fan-shaped platform and a second fan-shaped platform, wherein the first fan-shaped platform is provided with a pushing mechanism, and the second fan-shaped platform is provided with an outer pipe body fixing mechanism, wherein the outer pipe body fixing mechanism comprises a base, wherein the base is provided with a supporting mechanism for supporting the outer pipe body, wherein a fixing column is provided at the inner end of the base, and a rotating column is provided at the top end of the fixing column, wherein the rotating column is coaxially rotatably connected with the fixing column, a locking mechanism is provided between the rotating column and the fixing column, and the rotating column is provided with a lifting mechanism, wherein the lifting mechanism and a pressing component are used to drive the pressing component to press down and fix the outer pipe body, and the pipe threading device of the invention is adopted to ensure the smooth progress of the pipe threading work.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation bend pipe processing, and in particular to a pipe threading device and a working method for the thermal insulation bend pipe. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, the production process of thermal insulation elbow is the casing process. The thermal insulation elbow structure consists of three parts: a working steel pipe, a polyurethane foam insulation layer, and a PE pipe shell. The casing process is used during production, and pipe penetration is inevitable during the production process. Patent CN109109331B discloses a polyethylene prefabricated direct-buried hot water thermal insulation elbow pipe penetration device and a method of use, including an assembly platform formed by a concentric fan-shaped platform I and a fan-shaped platform II close together. The fan-shaped platform I is used to place the inner pipe body, and the fan-shaped platform II is used to place the outer pipe body. The inner pipe body is pushed through the outer pipe body on the fan-shaped platform II by a propulsion device arranged on the fan-shaped platform I, and the inner pipe body and the outer pipe body can be assembled without dividing the outer pipe body. The working steel pipe is used as the inner pipe body, and the PE pipe shell is used as the outer pipe body. During the pipe penetration process, the magnetic suction cup fixes the outer pipe body on the platform by magnetic force. The outer pipe body is fixed at a single point and is pushed forward by the working steel pipe. The PE pipe shell will inevitably be subjected to a force that causes it to warp upward. The PE pipe shell produces an upward displacement, which affects the smooth progress of the pipe threading work. At this time, the PE pipe shell needs to be manually adjusted, affecting the production progress. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pipe threading device and a working method for an insulated pipe bend, which ensures the smooth progress of the pipe threading work and further ensures the production progress of the insulated pipe bend.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides a pipe threading device for an insulated bent pipe, comprising a first fan-shaped platform and a second fan-shaped platform, the first fan-shaped platform being provided with a pushing mechanism and a plurality of conveying seats, the second fan-shaped platform being provided with a plurality of outer tube body fixing mechanisms, the outer tube body fixing mechanism comprising a base, the base being provided with a supporting mechanism for supporting the outer tube body, the base being provided with a fixing column, the top of the fixing column being provided with a rotating column, the rotating column being coaxially rotatably connected with the fixed column, a locking mechanism being provided between the rotating column and the fixed column, the rotating column being provided with a lifting mechanism, the lifting mechanism being connected to a pressing component to drive the pressing component to press down and fix the outer tube body.

[0007] Optionally, the locking mechanism includes a first locking plate fixed to the rotating column and a second locking plate fixed to the fixed column, and a locking pin is inserted between the first locking plate and the second locking plate to lock and fix the fixed column and the rotating column.

[0008] Optionally, the lifting mechanism includes a rotating drive element fixed to the top of the rotating column, the rotating drive element is connected to one end of a lead screw, the other end of the lead screw is rotatably connected to a support seat fixed to the rotating column, the lead screw is connected to a lifting frame, the lifting frame is slidably connected to the rotating column, and the lifting frame is connected to a pressing component to drive the pressing component to perform lifting and lowering movements.

[0009] Optionally, the bottom surface of the pressing component that contacts the outer tube body is an arc-shaped surface.

[0010] Optionally, the supporting mechanism includes a first lifting block and a second lifting block arranged relatively to each other, the first lifting block is arranged close to the fixed column and is slidably connected to the base, the second lifting block is fixedly connected to the base, and the fixed column is provided with a locking component for locking the first lifting block.

[0011] Optionally, the locking component is a locking bolt, the rod of the locking bolt passes through the fixing column and is threadedly connected to the fixing column, and the rod of the locking bolt abuts against the outer side surface of the first lifting block.

[0012] Optionally, a sliding block embedded in a sliding groove is provided at the bottom end of the first lifting block, the sliding groove is fixedly connected to the base, the sliding block is provided with a sliding column, the sliding column extends into a long hole opened on the side groove surface of the sliding groove, and the sliding column is slidably connected to the sliding groove through the long hole.

[0013] Optionally, the supporting surfaces of the first lifting block and the second lifting block for contacting the outer tube body are arc-shaped surfaces.

[0014] Optionally, the base is connected to a moving drive mechanism arranged radially along the second fan-shaped platform, and the moving drive mechanism can drive the base to move radially along the second fan-shaped platform.

[0015] In a second aspect, an embodiment of the present invention provides a working method of the pipe threading device for the thermal insulation elbow described in the first aspect, comprising the following steps:

[0016] Rotate the rotating column so that the pressing component leaves the position directly above the supporting mechanism;

[0017] The outer tube body is hoisted onto the second fan-shaped platform, and the supporting mechanism supports the outer tube body;

[0018] Rotate the rotating column to rotate the pressing component to the top of the outer tube body, and use the locking mechanism to lock and fix the rotating column and the fixed column;

[0019] The lifting mechanism drives the pressing component to move downward until the pressing component presses the outer tube body tightly;

[0020] The pushing mechanism works to drive the inner tube body on the first fan-shaped platform to penetrate into the outer tube body on the second fan-shaped platform.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the pipe threading device of the present invention, a plurality of outer tube body fixing mechanisms are arranged on the second fan-shaped platform, and the rotating column of the outer tube body fixing mechanism is provided with a lifting mechanism and a pressing component, and the lifting mechanism can drive the pressing component to apply downward pressure to the outer tube body on the second fan-shaped platform, thereby pressing and fixing the outer tube body from multiple points, avoiding displacement of the outer tube body during the pipe threading process, and eliminating the need for staff to adjust the outer tube body, thereby ensuring the smooth progress of the pipe threading process, and further ensuring the production progress of the thermal insulation bent pipe.

[0023] 2. In the pipe threading device of the present invention, the lifting mechanism is installed on the rotating column, and the rotating column is rotatably connected to the fixed column, so that the pressing component can avoid the position directly above the supporting mechanism, which is convenient for hoisting the outer pipe body onto the second fan-shaped platform.

[0024] 3. In the pipe threading device of the present invention, the first lifting block is slidably connected to the base, so that the distance between the first lifting block and the second lifting block can be adjusted, meeting the support requirements of outer pipes of different diameters and improving the applicability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the outer tube fixing mechanism of Example 1 of the present invention;

[0028] Figure 3 It is a schematic diagram of the assembly of the fixed column, the rotating column, the lifting mechanism and the pressing component in Example 1 of the present invention;

[0029] Among them, 1. base, 2. fixed column, 3. reinforcement plate, 4. rotating column, 5. pressing component, 6. first locking plate, 7. second locking plate, 8. locking pin, 9. motor, 10. reducer, 11. screw, 12. support seat, 13. lifting frame, 14. first lifting block, 15. second lifting block, 16. locking bolt, 17. sliding groove, 18. sliding column, 19. first fan-shaped platform, 20. second fan-shaped platform, 21. conveying seat. DETAILED DESCRIPTION

[0030] Example 1

[0031] This embodiment provides a pipe threading device for a thermal insulation elbow, such as Figure 1 As shown, it includes a first fan-shaped platform 19 and a second fan-shaped platform 20. The first fan-shaped platform 19 is used to place the inner tube body, and the second fan-shaped platform 20 is used to place the outer tube body. The first fan-shaped platform 19 is provided with a pushing mechanism and a plurality of conveying seats 21. The conveying seats 21 are used to support the inner tube body. The pushing mechanism can push the inner tube body to move, thereby pushing the inner tube body into the outer tube body to achieve tube penetration. In this embodiment, the first fan-shaped platform 19, the conveying seat 21, the pushing mechanism and the second fan-shaped platform 20 adopt the structure disclosed in patent CN109109331B, which will not be described in detail here. Figure 1 The pushing mechanism is omitted. This embodiment is improved on the basis of the pipe threading equipment disclosed in patent CN109109331B. No lifting seat is set on the second fan-shaped platform 20, but a plurality of outer tube body fixing mechanisms are set for pressing and fixing the outer tube body. During the pipe threading process, a downward fixing force is applied to the outer tube body to prevent the outer tube body from warping and producing upward displacement, thereby ensuring the smooth progress of the pipe threading process and further ensuring the production progress of the thermal insulation bent pipe.

[0032] like Figure 2-Figure 3 As shown, the outer tube body fixing mechanism includes a base 1, which is arranged along the radial direction of the second fan-shaped platform 20. Along the radial direction of the second fan-shaped platform 20, the outer end of the base 1 is fixedly connected to the bottom end of the fixing column 2. The fixing column 2 and the base 1 are vertically welded and fixed. A reinforcing plate 3 is provided between the fixing column 2 and the base 1 to increase the fixing strength between the fixing column 2 and the base 1.

[0033] Preferably, the fixing column 2 is made of a square steel pipe. In some other embodiments, the fixing column 2 may also be made of a round steel pipe or other profiles. Those skilled in the art may select the one according to actual needs.

[0034] The top end of the fixed column 2 is rotatably connected to the rotating column 4, and the fixed column 2 and the rotating column 4 are coaxially arranged. Preferably, the rotating column 4 is also made of a square steel pipe, and a cylindrical connecting column is provided at the bottom end of the square steel pipe. The connecting column extends into the interior of the fixed column 2 and is rotatably connected to the fixed column 2 through a bearing, wherein the outer ring of the bearing is fixed to the inner side surface of the fixed column 2, and the inner ring of the bearing is fixed to the connecting column.

[0035] The rotating column 4 is provided with a lifting mechanism, which is connected to the pressing component 5. The pressing component 5 is used to contact the outer tube body and apply downward pressure to the outer tube body, thereby fixing the outer tube body.

[0036] Along the radial direction of the second sector-shaped platform 20 , a supporting mechanism is provided on the inner side of the fixing column 2 , and the supporting mechanism is used to support the outer tube body.

[0037] A locking mechanism is provided between the fixed column 2 and the rotating column 4 so that when the pressing component 5 is rotated to just above the supporting mechanism, the fixed column 2 and the rotating column 4 can be locked and fixed.

[0038] In this embodiment, the locking mechanism includes a first locking plate 6, a second locking plate 7 and a locking pin 8. The first locking plate 6 is fixed to the bottom end of the rotating column 4, and the second locking plate 7 is fixed to the top end of the fixed column 2. The first locking plate 6 and the second locking plate 7 are both provided with corresponding locking holes. The locking pin 8 passes through the first locking plate 6 and the second locking plate 7 through the locking holes, thereby realizing the locking and fixation of the rotating column 4 and the fixed column 2.

[0039] This arrangement makes it convenient for the staff to rotate and lock the rotating column 4 .

[0040] The fixed column 2 and the rotating column 4 are arranged so that when the outer tube body is hoisted, the lifting mechanism and the pressing component 5 can avoid the position directly above the supporting mechanism, making it convenient to hoist the outer tube body into the second fan-shaped platform 20.

[0041] In this embodiment, the lifting mechanism adopts a screw lifting mechanism, including a rotating drive element, which is fixed at the top of the rotating column 4. The rotating drive element includes a motor 9 and a reducer 10. The housing of the reducer 10 is fixed at the top of the rotating column 4. The housing of the motor 9 is fixedly connected to the housing of the reducer 10. The output shaft of the motor 9 serves as the input shaft of the reducer 10. The output shaft of the reducer 10 is connected to the top of the screw 11 vertically arranged on the axis, and can drive the screw 11 to rotate around its own axis. The bottom end of the screw 11 is rotatably connected to the support seat 12 through a bearing. The support seat 12 is used to support the bottom end of the screw 11. Preferably, the support seat 12 adopts a bearing seat.

[0042] The lead screw 11 is threadedly connected to the lifting frame 13, and the lifting frame 13 is slidably connected to the rotating column 4. The lead screw 11 rotates around its own axis to drive the lifting frame 13 to perform vertical lifting movement.

[0043] Along the radial direction of the second fan-shaped platform 20, the inner end of the lifting frame 13 is fixedly connected to the outer end of the pressing component 5. The pressing component 5 adopts a pressing plate. The bottom end of the pressing plate used for contacting the outer tube body adopts an arc-shaped edge. A flange is provided at the arc-shaped edge to form an arc-shaped surface. The lower pressing plate contacts the outer tube surface of the outer tube body through the arc-shaped surface, thereby avoiding surface damage to the outer tube body.

[0044] Preferably, the inner end of the lower pressure plate is also provided with a flange, and is detachably connected to the lifting frame 13 through the flange and bolts, so as to facilitate the replacement of the lower pressure component 5 to meet the fixing requirements of outer tubes of different specifications, thereby improving the applicability of the outer tube fixing mechanism.

[0045] The supporting mechanism is used to support the outer tube body, and includes a first lifting block 14 and a second lifting block 15 that are arranged opposite to each other. The first lifting block 14 and the second lifting block 15 jointly support the outer tube body.

[0046] Along the radial direction of the second sector-shaped platform 20 , the first lifting block 14 is located outside the second lifting block 15 .

[0047] In this embodiment, the surfaces of the first lifting block 14 and the second lifting block 15 that are in contact with the outer tube body are arc-shaped surfaces.

[0048] The first lifting block 14 is slidably connected to the base 1, and the second lifting block 15 is fixedly connected to the base 1, so that the distance between the first lifting block 14 and the second lifting block 15 can be adjusted to meet the support requirements of outer tubes of different diameters and improve the applicability of the entire outer tube fixing mechanism.

[0049] The fixing column 2 is provided with at least one locking component, and the locking component is used to lock and fix the first lifting block 14 .

[0050] In this embodiment, the locking component adopts a locking bolt 16, two locking bolts 16 are provided, and the two locking bolts 16 are distributed vertically. The rod of the locking bolt 16 passes through the fixing column 2 and is threadedly connected to the fixing column 2. The rod of the locking bolt 16 abuts against the outer side surface of the first lifting block 14 to lock the first lifting block 14.

[0051] After the outer tube body is hoisted in place, slide the first lifting block 14 so that the first lifting block 14 and the second lifting block 15 are in contact with the outer tube body, and then rotate the locking bolt 16. The rod of the locking bolt 16 abuts against the outer side surface of the first lifting block 14 to lock the first lifting block 14.

[0052] The first lifting block 14 is slidably connected to the base 1, and the specific sliding connection method is: a sliding block is provided on the bottom surface of the first lifting block 14, and the sliding block is embedded in a sliding groove 17, and the sliding groove 17 is fixed on the base 1. Sliding columns 18 are provided on both sides of the sliding block. The sliding columns 18 extend into the long holes set on the side groove surfaces of the sliding grooves 17, and the axes of the long holes are set along the radial direction of the second fan-shaped platform 20. The sliding columns 18 are slidably connected to the sliding grooves 17 through the long holes, thereby realizing the sliding connection between the first lifting block 14 and the base 1.

[0053] The remaining structures of this embodiment can adopt the prior art disclosed in patent CN109109331B, which will not be described in detail here.

[0054] Furthermore, the base 1 is connected to a movable driving mechanism, and the movable driving mechanism is arranged along the radial direction of the second fan-shaped platform 20, so that the base 1 can be positioned radially along the second fan-shaped platform 20, further improving the applicability of the entire outer tube fixing mechanism.

[0055] Preferably, the mobile driving mechanism adopts an existing screw transmission mechanism, including a motor, which is fixed on the equipment base. The motor is connected to one end of the screw, the screw is arranged radially along the second fan-shaped platform 20, and the other end of the screw is rotatably connected to a bearing seat fixed on the equipment base. The screw is threadedly connected to the base 1, and the base 1 is slidably connected to a guide rail arranged on the equipment base. The motor drives the screw to rotate, thereby realizing the radial movement of the base 1 along the second fan-shaped platform 20.

[0056] Example 2

[0057] This embodiment provides a working method of the pipe threading device for the thermal insulation elbow described in Embodiment 1, comprising the following steps:

[0058] Step 1: The staff manually removes the locking pin 8 between the rotating column 4 and the fixed column 2, and manually rotates the rotating column 4 so that the pressing component 5 leaves the position directly above the supporting mechanism.

[0059] Step 2: Use a crane or other lifting tool to lift the inner tube body (working steel tube) and the outer tube body (PE tube shell), lift the inner tube body to the conveying seat 21 of the first fan-shaped platform 19, and lift the outer tube body to the second fan-shaped platform 20. At this time, the first lifting block 14 and the second lifting block 15 of the supporting mechanism are in contact with the outer tube body to support the outer tube body.

[0060] Step 3: The staff manually rotates the rotating column 4 so that the pressing component 5 rotates to just above the supporting mechanism and the outer tube body, and then inserts the locking pin 8 into the first locking plate 6 and the second locking plate 7 to lock and fix the rotating column 4 and the fixed column 2.

[0061] Step 4: Start the motor 9 in the rotating drive element. The motor 9 drives the lead screw 11 to rotate through the reducer 10. The lead screw 11 drives the pressing component 5 to descend through the lifting frame 13 until the pressing component 5 presses the outer tube body to fix the outer tube body.

[0062] Step 5: The pushing mechanism works, and the pushing mechanism drives the inner tube body to enter the outer tube body to achieve tube penetration. The working mode of the pushing mechanism is the same as the working mode of the propulsion device disclosed in patent CN109109331B, which will not be described in detail here.

[0063] Step 6: After the pipe threading work is completed, the motor 9 drives the screw 11 to rotate in the opposite direction, and the pressing component 5 rises to release the pressing state of the outer tube body. Then the staff manually removes the locking pin 8, rotates the rotating column 4, and rotates the pressing component 5 to a position just above the support mechanism, controls the pushing mechanism to return to the initial position, and then uses a crane or other lifting tools to lift the assembled outer tube body and inner tube body off the second fan-shaped platform 20.

[0064] The pipe threading device of this embodiment is provided with a plurality of outer pipe body fixing mechanisms, and the lifting mechanism can drive the downward pressing component 5 to apply downward pressure to the outer pipe body on the second fan-shaped platform 20, thereby pressing down and fixing the outer pipe body at multiple points, avoiding displacement of the outer pipe body during the pipe threading process, ensuring the smooth progress of the pipe threading process, and further ensuring the production progress of the thermal insulation bent pipe.

[0065] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipe threading device for a heat preservation elbow, comprising a first fan-shaped platform and a second fan-shaped platform, wherein the first fan-shaped platform is provided with a pushing mechanism and a plurality of conveying seats, characterized in that: The second fan-shaped platform is provided with a plurality of outer tube fixing mechanisms, wherein the outer tube fixing mechanisms include a base, the base is provided with a supporting mechanism for supporting the outer tube, the base is provided with a fixing column, the top of the fixing column is provided with a rotating column, the rotating column is coaxially rotatably connected with the fixing column, a locking mechanism is provided between the rotating column and the fixing column, the rotating column is provided with a lifting mechanism, and the lifting mechanism is connected with the pressing component to drive the pressing component to press down and fix the outer tube; The locking mechanism comprises a first locking plate fixed to the rotating column and a second locking plate fixed to the fixed column, and a locking pin is inserted between the first locking plate and the second locking plate to lock and fix the fixed column and the rotating column; The lifting mechanism includes a rotating driving element fixed to the top of the rotating column, the rotating driving element is connected to one end of the lead screw, the other end of the lead screw is rotatably connected to a support seat fixed to the rotating column, the lead screw is connected to the lifting frame, the lifting frame is slidably connected to the rotating column, and the lifting frame is connected to the pressing component to drive the pressing component to perform lifting and lowering movements; The bottom surface of the pressing component for contacting with the outer tube body is an arc-shaped surface; The supporting mechanism includes a first lifting block and a second lifting block arranged opposite to each other. The first lifting block is arranged close to the fixed column and is slidably connected to the base. The second lifting block is fixedly connected to the base. The fixed column is provided with a locking component for locking the first lifting block.

2. A pipe threading device for a thermal insulation elbow as claimed in claim 1, characterized in that: The locking component adopts a locking bolt, the rod of which passes through the fixing column and is threadedly connected with the fixing column, and the rod of the locking bolt abuts against the outer side surface of the first lifting block.

3. A pipe threading device for a thermal insulation elbow as claimed in claim 1, characterized in that: The bottom end of the first lifting block is provided with a sliding block embedded in the sliding groove, the sliding groove is fixedly connected to the base, the sliding block is provided with a sliding column, the sliding column extends into the long hole opened on the side groove surface of the sliding groove, and the sliding column is slidably connected to the sliding groove through the long hole.

4. A pipe threading device for a thermal insulation elbow as claimed in claim 1, characterized in that: The supporting surfaces of the first lifting block and the second lifting block for contacting the outer tube body are arc-shaped surfaces.

5. A pipe threading device for a thermal insulation elbow as claimed in claim 1, characterized in that: The base is connected to a moving drive mechanism arranged radially along the second sector-shaped platform, and the moving drive mechanism can drive the base to move radially along the second sector-shaped platform.

6. A working method of the pipe threading device for the thermal insulation elbow according to any one of claims 1 to 5, characterized in that: The following steps are involved: Rotate the rotating column so that the pressing component leaves the position directly above the supporting mechanism; The outer tube body is hoisted onto the second fan-shaped platform, and the supporting mechanism supports the outer tube body; Rotate the rotating column to rotate the pressing component to the top of the outer tube body, and use the locking mechanism to lock and fix the rotating column and the fixed column; The lifting mechanism drives the pressing component to move downward until the pressing component presses the outer tube body tightly; The pushing mechanism works to drive the inner tube body on the first fan-shaped platform to penetrate into the outer tube body on the second fan-shaped platform.

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