Thermal insulation pipe elbow pipe penetrating equipment and pipe penetrating method

Abstract

The invention provides thermal insulation pipe elbow pipe penetrating equipment and a pipe penetrating method, and belongs to the technical field of elbow pipe penetrating. The thermal insulation pipe elbow pipe penetrating equipment comprises a center shaft, a first supporting seat, a second supporting seat, a plurality of lifting tables and a prefabricated fixing frame; one end of the first supporting seat is rotationally arranged on the central shaft; a first protruding part is arranged on the first supporting seat, and a flange pushing mechanism and an inner pipe clamping mechanism are arranged at one end of the first protruding part; one end of the second supporting seat is rotationally arranged on the central shaft; the bottom of the rotating end of the second supporting base is located on the top of the first supporting base. A second protruding part is arranged on the second supporting seat; the lifting tables are arranged in the circumferential direction of the center shaft. Wherein a lifting groove for lifting the lifting table is formed in the ground, a jacking mechanism is arranged in the lifting groove, and the jacking end of the jacking mechanism is connected with the lifting table; through the arrangement, the problem that in the prior art, when the arc length of the outer pipe is short, collision interference occurs between the outer pipe fixing frame and the inner pipe fixing frame can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of elbow production, and in particular relates to an insulation pipe elbow threading device and a pipe threading method. Background Art

[0002] When producing the insulated pipe elbow, the polyethylene outer protective pipe elbow is put on the inner steel pipe elbow, and then the flanges at both ends are pushed up so that the flanges are installed on both ends of the polyethylene outer protective pipe elbow and the inner steel pipe elbow.

[0003] In the prior art, a polyethylene outer protective pipe is placed on an outer pipe fixing frame, an inner steel pipe elbow is fixed on the inner pipe fixing frame, and then the inner pipe fixing frame and the outer pipe fixing frame are relatively rotated around the same axis, so that the inner steel pipe elbow and the polyethylene outer protective pipe are sleeved together; finally, a flange is pushed onto the ends of the polyethylene outer protective pipe elbow and the inner steel pipe elbow to complete the sleeve connection operation of the polyethylene outer protective pipe elbow and the inner steel pipe elbow.

[0004] In the above-mentioned pipe threading method, the clamping mechanism on the inner pipe fixing frame clamps the inner steel pipe elbow, so the inner steel pipe elbow is in a suspended state; the polyethylene outer protective tube is directly placed on the top of the outer pipe fixing frame, clamped by a clamp, and both ends of the polyethylene outer protective tube extend to the outside of the outer pipe fixing frame, that is, both ends of the polyethylene outer protective tube are in a suspended state.

[0005] When the arc length of the polyethylene outer protective tube cannot meet the requirement that both ends are in a suspended state, there will be a collision between the outer tube fixing frame and the inner tube fixing frame during the sleeve process, and they are not sleeved into place at this time; therefore, the sleeve method in the prior art cannot be applied to polyethylene outer protective tube elbows with shorter arc lengths. Summary of the invention

[0006] The embodiment of the present invention provides an insulation pipe elbow pipe threading device and a pipe threading method, which aims to solve the problem of interference between the outer pipe fixing frame and the flange when the arc length of the polyethylene outer protective pipe elbow is short in the prior art.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] Provided is a thermal insulation pipe elbow threading device, comprising:

[0009] A central axis, one end of which is connected to the ground and the other end of which extends upward in the height direction;

[0010] A first support seat, one end of which is rotatably arranged on the central axis; a first protrusion is provided on the first support seat, and one end of the first protrusion has a flange pushing mechanism and an inner tube clamping mechanism;

[0011] A second support seat, one end of which is rotatably arranged on the central axis; the bottom of the rotating end of the second support seat is located on the top of the first support seat, and the second support seat is also provided with an avoidance groove for avoiding the first support seat at a position close to the central axis; the second support seat is provided with a second protrusion, and one end of the second protrusion is also provided with a flange push mechanism;

[0012] A plurality of lifting platforms are arranged along the circumference of the central axis; wherein a lifting groove is provided on the ground for lifting the lifting platform, a lifting mechanism is provided in the lifting groove, and a lifting end of the lifting mechanism is connected to the lifting platform; in the initial position, the top of the lifting platform is flush with the ground;

[0013] A prefabricated fixing frame is detachably arranged on one of the lifting platforms; the prefabricated fixing frame is used to fix the outer tube; wherein the prefabricated fixing frame has different sizes and specifications, and a prefabricated fixing frame of one specification is selected when in use.

[0014] In a possible implementation, the first support seat has a side facing the lifting platform during the rotation process with an avoidance arc surface, and the second support seat also has a side facing the lifting platform during the rotation process with an avoidance arc surface;

[0015] Among them, the first protrusion has a first connection end protruding from the avoidance arc surface in the horizontal direction, and the flange pushing mechanism and the inner tube clamping mechanism are arranged on the first connection end; the second protrusion has a second connection end protruding from the avoidance arc surface in the horizontal direction, and the flange pushing mechanism is arranged on the second connection end.

[0016] In a possible implementation, the height of the lifting platform connected to the prefabricated fixing frame is lower than the height of the first connecting end, and the height of the lifting platform connected to the prefabricated fixing frame is lower than the height of the second connecting end.

[0017] In a possible implementation, the first support seat is provided with a radial drive mechanism for driving the first protrusion to move along the diameter direction of the central axis; the second support seat is also provided with a radial drive mechanism for driving the second protrusion to move along the diameter direction of the central axis.

[0018] In a possible implementation, the radial driving mechanism on the first support seat includes:

[0019] A lead screw is arranged on a first support seat; both ends of the first support seat are provided with bearing seats respectively, and both ends of the lead screw are rotatably matched with the two bearing seats respectively;

[0020] Wherein, the first protrusion has a threaded hole that matches the thread of the lead screw.

[0021] In a possible implementation, the insulation pipe elbow threading device further includes:

[0022] The gear ring is arranged on the periphery of the first support seat, the second support seat and the lifting platform with the central axis as the center position;

[0023] Wherein, the first support seat and the second support seat are both provided with gears meshing with the gear ring, and the first support seat and the second support seat are respectively provided with driving motors for driving the gears to rotate.

[0024] In a possible implementation, a support platform is fixedly provided on the outer sides of the first support seat and the second support seat, and the drive motor is arranged on the support platform;

[0025] Among them, the support platform is also provided with an electric push rod, and the electric push rod is arranged along the height direction; a positioning hole for plugging and cooperating with the electric push rod is provided on the ground or the lifting platform.

[0026] In a possible implementation, the first connecting end is provided with a plurality of slide grooves, and the plurality of slide grooves are arranged along the diameter direction of the inner tube end; the inner tube clamping mechanism includes:

[0027] A push rod, one end of which is slidably disposed in the slide groove, and the other end of which is used to abut against the end wall of the inner tube;

[0028] An arc-shaped rod, one end of which is fixed on the top rod and the other end of which is used to extend into the inner tube; wherein after the arc-shaped rod extends into the inner tube, the arc-shaped rod contacts the inner circumferential wall of the inner tube;

[0029] A screw rod is rotatably arranged in the slide groove; one end of the screw rod passes through the first protrusion, wherein the end of the push rod located in the slide groove has a threaded hole that matches the screw rod thread.

[0030] In a possible implementation, the prefabricated fixing frame includes:

[0031] A base is connected to the lifting platform by bolts; the top of the base has an arc groove;

[0032] A first arc-shaped plate is fixed on the base at the position of the arc-shaped groove; the concave surface of the first arc-shaped plate faces upward;

[0033] A second curved plate, used for buckling onto the outer tube;

[0034] Wherein, the first arc plate and the second arc plate are respectively provided with fixing structures, and when the first arc plate and the second arc plate clamp the outer tube, the positions of the first arc plate and the second arc plate are fixed by the fixing structures so that the first arc plate and the second arc plate clamp the outer tube.

[0035] The present invention provides a thermal insulation pipe elbow threading device. Compared with the prior art, when fixing the inner pipe on the first support seat, the inner pipe can be placed at the position of the lifting platform first, and then after the inner pipe is limited, the inner pipe is driven to rise to the specified position by the lifting mechanism; by rotating the first support seat, the inner pipe clamping mechanism can clamp the end of the inner pipe, and at this time, the lifting platform descends to the initial position; one of the prefabricated fixing frames of one specification is selected and fixed on one of the lifting platforms, and then the outer pipe is fixed on the prefabricated fixing frame, and at this time, both ends of the outer pipe are in a suspended state; by rotating the first support seat and the second support seat, the inner pipe can pass through the outer pipe, and then the flange is pushed to the end position of the inner pipe and the outer pipe by the flange pushing mechanism; through the above-mentioned setting of the present application, the prefabricated fixing frame of the corresponding specification can be selected according to the arc length of the outer pipe, so that both ends of the outer pipe can be located outside the prefabricated fixing frame, that is, both ends of the outer pipe can be in a suspended state, which can avoid the problem of collision and interference between the outer pipe fixing frame and the inner pipe fixing frame when the arc length of the outer pipe is short in the prior art.

[0036] To achieve the above object, another technical solution adopted by the present invention is:

[0037] A method for inserting a pipe through an elbow of an insulation pipe is provided. The lifting platform is provided with a plurality of pin holes. The method for inserting a pipe through an elbow of an insulation pipe comprises the following steps:

[0038] The inner tube is hoisted to the position of the lifting platform, and the inner tube is limited on one of the lifting platforms by the cooperation of the pin shaft and the pin hole; one end of the inner tube is located outside the lifting platform;

[0039] The lifting platform is driven to rise by the lifting mechanism, and stops rising when the lifting platform drives the inner tube to rise to a preset position;

[0040] The first support seat rotates to the position of the inner tube, and the inner tube clamping mechanism clamps the end of the inner tube; the lifting mechanism drives the lifting platform to descend to the initial position;

[0041] Fix the prefabricated fixing frame on the lifting platform, and fix the outer tube on the prefabricated fixing frame;

[0042] The first support seat rotates toward the prefabricated fixing frame, and the second support seat also rotates toward the prefabricated fixing frame; when the inner tube is sleeved inside the outer tube, the flange is pushed to the end positions of the inner tube and the outer tube by the flange pushing mechanism.

[0043] The beneficial effects of the insulated pipe elbow threading method provided by the present invention are the same as the beneficial effects of the insulated pipe elbow threading equipment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a thermal insulation pipe elbow threading device provided by an embodiment of the present invention;

[0045] Figure 2 for Figure 1 The enlarged schematic diagram of the middle A part;

[0046] Figure 3 for Figure 1 The enlarged schematic diagram of the middle part B;

[0047] Figure 4 A schematic diagram of a lifting slot portion of a thermal insulation pipe elbow threading device provided by an embodiment of the present invention;

[0048] Figure 5 for Figure 4 The enlarged schematic diagram of the middle C part;

[0049] Figure 6 A schematic diagram of a first protruding portion of a thermal insulation pipe elbow threading device provided by an embodiment of the present invention;

[0050] Figure 7 A cross-sectional view of a first protruding portion of a thermal insulation pipe elbow threading device provided by an embodiment of the present invention;

[0051] Figure 8 A schematic diagram of a first support seat and a second support seat portion of a thermal insulation pipe elbow threading device provided in an embodiment of the present invention;

[0052] Fig. 9 A schematic diagram of a second support base portion of a thermal insulation pipe elbow threading device provided in an embodiment of the present invention;

[0053] Fig.10 A schematic diagram of a prefabricated fixing frame portion of a thermal insulation pipe elbow threading device provided in an embodiment of the present invention;

[0054] Fig.11 A schematic diagram of a state in which a prefabricated fixing frame of a thermal insulation pipe elbow threading device provided by an embodiment of the present invention is installed on a sliding seat;

[0055] Fig.12 A schematic diagram of a fixed seat and a sliding seat portion of an insulation pipe elbow threading device provided in an embodiment of the present invention.

[0056] Description of the accompanying drawings: 1. Central axis; 11. Lifting groove; 12. Lifting mechanism; 121. Ball screw; 122. Screw sleeve; 123. Driving motor; 124. Guide component; 13. Guide column; 14. Gear ring; 2. First support seat; 21. Avoidance arc surface; 22. Screw; 23. Bearing seat; 24. Handle; 25. Gear; 26. Support platform; 3. Second support seat; 31. Avoidance groove; 4. Lifting platform; 41. Fixed seat; 411. Connecting part; 42. Sliding seat; 43, threaded rod; 44, hexagonal handle; 5, prefabricated fixing frame; 51, base; 52, first arc plate; 53, second arc plate; 54, fixing plate; 6, first protrusion; 61, first connecting end; 62, accommodating cavity; 63, placement rack; 64, slide groove; 7, flange pushing mechanism; 71, pushing rod; 72, pushing cylinder; 8, inner tube clamping mechanism; 81, push rod; 82, arc rod; 83, screw; 9, second protrusion; 91, second connecting end. DETAILED DESCRIPTION

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0058] Please also read Figures 1 to 12 , the insulated pipe elbow threading equipment provided by the present invention is now described. The insulated pipe elbow threading equipment comprises a central axis 1, a first support seat 2, a second support seat 3, a plurality of lifting platforms 4 and a prefabricated fixing frame 5; one end of the central axis 1 is connected to the ground, and the other end extends upward in the height direction; one end of the first support seat 2 is rotatably set on the central axis 1; a first protrusion 6 is provided on the first support seat 2, and one end of the first protrusion 6 has a flange pushing mechanism 7 and an inner tube clamping mechanism 8; one end of the second support seat 3 is rotatably set on the central axis 1; the bottom of the rotating end of the second support seat 3 is located at the top of the first support seat 2, and the second support seat 3 near the central axis 1 also has a flange for avoiding the first support seat 2 has an avoidance groove 31; the second support seat 3 has a second protrusion 9, and one end of the second protrusion 9 also has a flange pushing mechanism 7; a plurality of lifting platforms 4 are arranged along the circumference of the central axis 1; wherein, a lifting groove 11 for lifting the lifting platform 4 is provided on the ground, and a lifting mechanism 12 is provided in the lifting groove 11, and the lifting end of the lifting mechanism 12 is connected to the lifting platform 4; in the initial position, the top of the lifting platform 4 is flush with the ground; the prefabricated fixing frame 5 is detachably arranged on one of the lifting platforms 4; the prefabricated fixing frame 5 is used to fix the outer tube; wherein, the prefabricated fixing frame 5 has different sizes and specifications, and a prefabricated fixing frame 5 of one specification is selected when in use.

[0059] Compared with the prior art, the present invention provides an insulated pipe elbow threading device. When fixing the inner pipe on the first support seat 2, the inner pipe can be placed at the position of the lifting platform 4 first, and then after limiting the inner pipe, the inner pipe is driven to rise to the specified position by the lifting mechanism 12; the inner pipe clamping mechanism 8 can clamp the end of the inner pipe by rotating the first support seat 2, and at this time, the lifting platform 4 is lowered to the initial position; one of the prefabricated fixing frames 5 of one specification is selected and fixed on one of the lifting platforms 4, and then the outer pipe is fixed on the prefabricated fixing frame 5, and at this time, the outer pipe Both ends of the outer tube are in a suspended state; through the rotation of the first support seat 2 and the second support seat 3, the inner tube can pass through the outer tube, and then the flange plate is pushed to the end position of the inner tube and the outer tube by the flange pushing mechanism 7; through the above-mentioned arrangement of the present application, a prefabricated fixing frame 5 of corresponding specifications can be selected according to the arc length of the outer tube, so that both ends of the outer tube can be located on the outside of the prefabricated fixing frame 5, that is, both ends of the outer tube can be in a suspended state, which can avoid the problem of collision and interference between the outer tube fixing frame and the inner tube fixing frame when the arc length of the outer tube is short in the prior art.

[0060] Exemplarily, the lifting mechanism 12 includes a ball screw 121, a screw sleeve 122 and a drive motor 123, wherein the screw sleeve 122 is threadedly matched with the ball screw 121; the drive motor 123 is installed in the lifting slot 11, and the output shaft of the drive motor 123 is connected to one end of the ball screw 121; one end of the screw sleeve 122 is connected to the bottom of the lifting platform 4. When the lifting platform 4 is driven to rise, the drive motor 123 drives the ball screw 121 to rotate forward, which can move the screw sleeve 122 upward, thereby driving the lifting platform 4 to rise; when the lifting platform 4 needs to be lowered, the drive motor 123 drives the ball screw 121 to rotate reversely, which can move the screw sleeve 122 downward, thereby driving the lifting platform 4 to descend.

[0061] Exemplarily, a guide component 124 is fixedly provided on the outer peripheral wall of the screw sleeve 122, and a guide hole is provided on the guide component 124; a guide column 13 is provided in the lifting groove 11, and the bottom end of the guide column 13 is fixed to the bottom of the lifting groove 11, and the guide component 124 and the guide column 13 are slidably matched; through the above arrangement, the stability of the lifting platform 4 during the lifting process can be ensured. When the lifting platform 4 is in the initial position, the top of the lifting platform 4 is coplanar with the ground, and at this time, the guide column 13 is in contact with the bottom of the lifting platform 4, so the guide column 13 can support the lifting platform 4.

[0062] In some embodiments, Figures 1 to 12As shown, the first support seat 2 has an avoidance arc surface 21 on the side facing the lifting platform 4 during the rotation process, and the second support seat 3 also has an avoidance arc surface 21 on the side facing the lifting platform 4 during the rotation process; wherein, the first protrusion 6 has a first connecting end 61 protruding from the avoidance arc surface 21 in the horizontal direction, and the flange pushing mechanism 7 and the inner tube clamping mechanism 8 are arranged on the first connecting end 61; the second protrusion 9 has a second connecting end 91 protruding from the avoidance arc surface 21 in the horizontal direction, and the flange pushing mechanism 7 is arranged on the second connecting end 91.

[0063] It should be noted that by providing an avoidance arc surface 21 on the first support seat 2 and the second support seat 3, the side of the lifting platform 4 can be avoided; when the arc length of the outer tube is smaller than the width of the lifting platform 4, interference between the first support seat 2 and the second support seat 3 and the lifting platform 4 can be avoided.

[0064] Through the cooperation of the first connection end 61 and the avoidance arc surface 21, the flange pushing mechanism 7 and the inner tube clamping mechanism 8 on the first connection end 61 can be rotated to the top of the lifting platform 4 to avoid the interference between the first support seat 2 and the lifting platform 4; through the cooperation of the second connection end 91 and the avoidance arc surface 21, the flange pushing mechanism 7 on the second connection end 91 can be rotated to the top of the lifting platform 4 to avoid the interference between the second support seat 3 and the lifting platform 4. Through the above arrangement, the inner and outer tubes can be threaded even when the arc length of the outer tube is short.

[0065] Exemplarily, the flange pushing mechanism 7 on the first protruding portion 6 and the flange pushing mechanism 7 on the second protruding portion 9 are completely identical, and the flange pushing mechanism 7 on the first protruding portion 6 is taken as an example for explanation. The first protruding portion 6 has an accommodating cavity 62 inside, and the flange pushing mechanism 7 includes a plurality of pushing rods 71 ​​and a plurality of pushing cylinders 72; one end of each pushing rod 71 is plugged into a corresponding blind hole on the flange, and the other end extends into the accommodating cavity 62, and the pushing rod 71 is slidably engaged with the first protruding portion 6 along its axial direction; the pushing cylinder 72 corresponds to the pushing rod 71 one by one, and the pushing cylinder 72 is installed in the accommodating cavity 62 of the first protruding portion 6, and the piston rod of the pushing cylinder 72 is connected to the inner end of the pushing rod 71;

[0066] Specifically, the number of the push rods 71 ​​and the push cylinders 72 can be three, but not limited to three; the multiple push rods 71 ​​are evenly distributed along the circumference of the flange, a placement frame 63 is provided in the accommodating cavity 62, the placement frame 63 is connected to the inside of the first protrusion 6 by bolts, and the push cylinder 72 is fixed on the placement frame 63. When installing the flange, the outer end of the push rod 71 is plugged into the blind hole on the flange, and then the inner tube is fixed on the first protrusion 6; after the inner and outer tubes are threaded, the flange can be installed to the end positions of the inner and outer tubes by pushing the flange with the push cylinder 72. The flange installation process on the second protrusion 9 is the same as the flange installation process on the first protrusion 6, which will not be repeated here.

[0067] In addition, the position of the push rod 71 in the drawings of the present application is fixed, and therefore the drawings of the present application are applicable to the case where the pipe diameters of the elbow ends are the same, wherein when the pipe diameters of the elbow ends are the same, the curvature radii of the elbows may be different; when the curvature radii of the elbows are different, since the pipe diameters of the elbow ends are the same, the size of the flange is the same, and the present application can be applicable to the above situation.

[0068] If the pipe diameter at the elbow end changes, the position of the push rod 71 needs to be adjusted so that the push rod 71 can be connected to flanges of different sizes.

[0069] In some embodiments, Figures 1 to 12 As shown, the height of the lifting platform 4 connected to the prefabricated fixing frame 5 is lower than the height of the first connecting end 61 , and the height of the lifting platform 4 connected to the prefabricated fixing frame 5 is lower than the height of the second connecting end 91 .

[0070] It should be noted that when the lifting platform 4 drives the outer tube to rise to its position, the height of the lifting platform 4 is lower than the height of the first connection end 61 and the second connection end 91. Therefore, during the rotation of the first support seat 2 and the second support seat 3, the interference between the first connection end 61, the second connection end 91 and the lifting platform 4 can be reduced.

[0071] In some embodiments, Figures 1 to 12 As shown, a radial driving mechanism is provided on the first support seat 2, which is used to drive the first protrusion 6 to move along the diameter direction of the central axis 1; a radial driving mechanism is also provided on the second support seat 3, which is used to drive the second protrusion 9 to move along the diameter direction of the central axis 1; the radial driving mechanism on the first support seat 2 is exactly the same as the radial driving mechanism on the second support seat 3, and the radial driving structure on the first support seat 2 is taken as an example for explanation. The radial driving mechanism includes a lead screw 22, which is arranged on the first support seat 2; the first support seat 2 has bearing seats 23 at both ends, and the two ends of the lead screw 22 are respectively rotatably matched with the two bearing seats 23; wherein, the first protrusion 6 has a threaded hole that is threadedly matched with the lead screw 22; and a handle 24 is fixedly provided at the outer end of the lead screw 22.

[0072] It should be noted that by rotating the handle 24, the screw 22 can be driven to rotate, and then the position of the first protrusion 6 can be adjusted along the diameter direction of the central axis 1, so that inner tubes with different curvature radii can be threaded; when the curvature radius of the inner tube becomes larger or smaller, a prefabricated fixing frame 5 of a corresponding model is selected, and the prefabricated fixing frame 5 is fixed at a corresponding position on the lifting platform 4, so that the sleeve operation of the inner tube and the outer tube can be completed.

[0073] In some embodiments, Figures 1 to 12 As shown, the insulation pipe elbow threading equipment also includes a ring gear 14, which is centered on the central axis 1 and is arranged on the periphery of the first support seat 2, the second support seat 3 and the lifting platform 4; wherein the first support seat 2 and the second support seat 3 both have a gear 25 meshing with the ring gear 14, and the first support seat 2 and the second support seat 3 respectively have a driving motor 123 for driving the gear 25 to rotate.

[0074] It should be noted that by arranging the ring gear 14 on the periphery of the first support seat 2, the second support seat 3 and the lifting platform 4, the interference between the ring gear 14 and the first support seat 2, the second support seat 3 and the lifting platform 4 can be avoided; by arranging a gear 25 on the first support seat 2 and driving the gear 25 to rotate by the driving motor 123, the first support seat 2 can rotate around the central axis 1, thereby driving the inner tube to rotate around the central axis 1; by arranging a gear 25 on the second support seat 3 and driving the gear 25 to rotate by the driving motor 123, the second support seat 3 can rotate around the central axis 1, thereby driving the flange to rotate around the central axis 1.

[0075] In some embodiments, Figures 1 to 12 As shown, a support platform 26 is fixedly provided on the outer side of the first support seat 2 and the second support seat 3, and a driving motor 123 is arranged on the support platform 26; wherein, an electric push rod (not shown in the figure) is also provided on the support platform 26, and the electric push rod is arranged along the height direction; a positioning hole (not shown in the figure) for plugging and cooperating with the electric push rod is provided on the ground or on the lifting platform 4.

[0076] For example, the driving motor 123 on the support platform 26 can drive the gear 25 to rotate. Taking the first support seat 2 as an example, after the first support seat 2 rotates to the right position, if the first support seat 2 is located on the ground, the electric push rod on the support platform 26 is plugged into the positioning hole on the ground. If the first support seat 2 is located on the lifting platform 4, it should be noted that the lifting platform 4 is in the initial state and has not risen; at this time, the electric push rod on the support platform 26 is plugged into the positioning hole on the lifting platform 4.

[0077] By plugging and cooperating with the positioning hole, the first support seat 2 can be limited circumferentially. At this time, when the flange is pushed, the first support seat 2 can be prevented from moving backward. The function of the electric push rod on the second support seat 3 is the same as that of the electric push rod on the first support seat 2, which will not be repeated here.

[0078] In some embodiments, Figures 1 to 12 As shown, the first connecting end 61 is provided with a plurality of slide grooves 64, and the plurality of slide grooves 64 are all arranged along the diameter direction of the end of the inner tube; the inner tube clamping mechanism 8 includes a push rod 81, an arc rod 82 and a screw rod 83; one end of the push rod 81 is slidably arranged in the slide groove 64, and the other end is used to abut against the end wall of the inner tube; one end of the arc rod 82 is fixed on the push rod 81, and the other end is used to extend into the inner tube; wherein, after the arc rod 82 is extended into the inner tube, the arc rod 82 contacts the inner circumferential wall of the inner tube; the screw rod 83 is rotatably arranged in the slide groove 64; one end of the screw rod 83 passes through the first protrusion 6, wherein the end of the push rod 81 located in the slide groove 64 has a threaded hole that is threadably matched with the screw rod 83.

[0079] It should be noted that when clamping the end of the inner tube, the arc rod 82 is inserted into the inner tube, and the end of the push rod 81 abuts against the end of the inner tube; by rotating the screw 83, the push rod 81 and the arc rod 82 can move outward, and finally the arc rod 82 abuts against the inner wall of the inner tube, thereby completing the clamping of the inner tube.

[0080] By making the arc rod 82 contact with the inner wall of the inner tube, the contact area between the arc rod 82 and the inner tube can be increased, thereby improving the firmness; a boss is formed between the arc rod 82 and the push rod 81, and the boss is pressed against the end of the inner tube, so that the boss can play a positioning role; when the boss is in contact with the end of the inner tube, there is a gap between the outer peripheral wall of the push rod 81 and the outer peripheral wall of the inner tube, so the push rod 81 will not protrude from the outer peripheral wall of the inner tube radially along the inner tube, and when the flange is pushed to the end position of the inner tube, the boss part of the push rod 81 can be avoided from interfering with the flange.

[0081] In some embodiments, Figures 1 to 12 As shown, the prefabricated fixing frame 5 includes a base 51, a first curved plate 52, and a second curved plate 53; the base 51 is connected to the lifting platform 4 by bolts; the top of the base 51 has an arc groove; the first curved plate 52 is fixed to the position of the base 51 in the arc groove; the concave surface of the first curved plate 52 faces upward; the second curved plate 53 is used to buckle on the outer tube; wherein, the first curved plate 52 and the second curved plate 53 are respectively provided with fixing structures, and when the first curved plate 52 and the second curved plate 53 clamp the outer tube, the positions of the first curved plate 52 and the second curved plate 53 are fixed by the fixing structure, so that the first curved plate 52 and the second curved plate 53 clamp the outer tube.

[0082] Exemplarily, the fixing structure includes a fixing plate 54, and the fixing plates 54 are fixed to the inner side and the outer side of the first curved plate 52, and the fixing plates 54 are fixed to the inner side and the outer side of the second curved plate 53, respectively; the fixing plates 54 have connecting through holes. After the outer tube is placed on the first curved plate 52, the second curved plate 53 is buckled on the outer tube; at this time, the fixing plate 54 of the second curved plate 53 is aligned with the corresponding fixing plate 54 on the first curved plate 52, and at this time, the bolts are passed through the two fixing plates 54 and fixed by nuts, so that the first curved plate 52 and the second curved plate 53 can be fixed together, so that the first curved plate 52 and the second curved plate 53 clamp the outer tube.

[0083] Exemplarily, a driving device for driving the prefabricated fixing frame 5 to slide along the diameter direction of the central axis 1 can also be provided on the lifting platform 4, and the driving device includes a fixed seat 41, a sliding seat 42 and a threaded rod 43; the sliding seat 42 is slidably set on the fixed seat 41, and the threaded rod 43 is rotatably set on the fixed seat 41, and the sliding seat 42 has a threaded hole that is threadedly matched with the threaded rod 43. The fixed seat 41 is fixed to one of the lifting platforms 4 by bolts. Specifically, the top of the fixed seat 41 has a countersunk hole (not shown in the figure), and the lifting platform 4 has a threaded hole. After the fixed seat 41 is placed on the lifting platform 4, the countersunk hole on the fixed seat 41 is aligned with the threaded hole on the lifting platform 4, and then the fixed seat 41 is fixed to the lifting platform 4 by bolts; after the bolt is fixed in place, the head of the bolt is located in the countersunk hole, so the head of the bolt does not affect the sliding of the sliding seat 42.

[0084] The two ends of the fixed seat 41 have connecting parts 411 that cooperate with the threaded rod 43. The connecting parts 411 are provided with bearings. The two ends of the threaded rod 43 are respectively rotatably matched with the connecting parts 411 at corresponding positions. The sliding seat 42 is connected to the base 51 of the prefabricated fixed frame 5 by bolts. The base 51 of the prefabricated fixed frame 5 is provided with a through hole. The sliding seat 42 has a threaded hole corresponding to the through hole on the base 51, which is convenient for the base 51 to be bolted to the sliding seat 42. One end of the threaded rod 43 passes through the connecting part 411, and a hexagonal handle 44 is fixedly provided at the passing end of the threaded rod 43. The operator can insert a wrench with a hexagonal hole into the hexagonal handle 44, and then rotate the hexagonal handle 44 to achieve the purpose of rotating the threaded rod 43.

[0085] It should be noted that the driving device on the lifting platform 4 also has a variety of specifications and models, and a suitable driving device can be selected according to the actual situation; when the diameter of the outer tube is large, the driving device can be set on the lifting platform 4 corresponding to the outer tube. For example, if the outer tube spans four lifting platforms 4, the driving device can be set on the two middle lifting platforms 4, or on the two lifting platforms 4 at the edge, or at intervals; of course, the driving device can also be set on each lifting platform 4. When setting multiple driving devices, it is necessary to first move multiple prefabricated fixing frames 5 to the corresponding positions, and then place the outer tube on the multiple prefabricated fixing frames 5.

[0086] Based on the same inventive concept, the present application also provides a method for threading a thermal insulation pipe elbow, wherein the lifting platform 4 has a plurality of pin holes, comprising the following steps:

[0087] The inner tube is hoisted to the position of the lifting platform 4 , and the inner tube is limited on one of the lifting platforms 4 through the cooperation of the pin shaft and the pin hole; one end of the inner tube is located outside the lifting platform 4 .

[0088] The lifting platform 4 is driven to rise by the lifting mechanism 12, and stops rising when the lifting platform 4 drives the inner tube to rise to a preset position.

[0089] The first support seat 2 rotates to the position of the inner tube, and the inner tube clamping mechanism 8 clamps the end of the inner tube; the lifting mechanism drives the lifting platform 4 to descend to the initial position.

[0090] The prefabricated fixing frame 5 is fixed on the lifting platform 4 , and the outer tube is fixed on the prefabricated fixing frame 5 .

[0091] The first support seat 2 rotates toward the prefabricated fixing frame 5, and the second support seat 3 also rotates toward the prefabricated fixing frame 5; when the inner tube is sleeved inside the outer tube, the flange is pushed to the end position of the inner tube and the outer tube by the flange pushing mechanism 7.

[0092] It should be noted that the lifting platform 4 in the present application can lift the inner tube, and the lifting platform 4 in the present application can also lift the outer tube; before the lifting platform 4 in the present application lifts the inner tube, the position of the inner tube is first placed, and then the position of the inner tube is limited by cooperating with the pin shaft and the pin hole of the lifting platform 4; then the inner tube is lifted by the lifting platform 4 to the preset position, and at this time, the inner tube clamping mechanism 8 can clamp the inner tube by rotating the first support seat 2.

[0093] In the present application, the inner tube is lifted by the lifting platform 4. When placing the inner tube, since the inner tube is placed on a horizontal plane, it is convenient to adjust the position of the inner tube. After the lifting platform 4 lifts the inner tube into place and clamps the inner tube by the inner tube clamping mechanism 8, the lifting platform 4 can be lowered to a position flush with the ground without affecting the rotation of the first support seat 2.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal insulation pipe elbow threading device, characterized in that: include: A central axis, one end of which is connected to the ground and the other end of which extends upward in the height direction; A first support seat, one end of which is rotatably arranged on the central axis; a first protrusion is provided on the first support seat, and one end of the first protrusion has a flange pushing mechanism and an inner tube clamping mechanism; A second support seat, one end of which is rotatably arranged on the central axis; the bottom of the rotating end of the second support seat is located on the top of the first support seat, and the second support seat is also provided with an avoidance groove for avoiding the first support seat at a position close to the central axis; the second support seat is provided with a second protrusion, and one end of the second protrusion is also provided with a flange push mechanism; A plurality of lifting platforms are arranged along the circumference of the central axis; wherein a lifting groove is provided on the ground for lifting the lifting platform, a lifting mechanism is provided in the lifting groove, and a lifting end of the lifting mechanism is connected to the lifting platform; in the initial position, the top of the lifting platform is flush with the ground; A prefabricated fixing frame is detachably arranged on one of the lifting platforms; the prefabricated fixing frame is used to fix the outer tube; wherein the prefabricated fixing frame has different sizes and specifications, and a prefabricated fixing frame of one specification is selected when in use.

2. The thermal insulation pipe elbow threading device according to claim 1, characterized in that: The first support seat has a side facing the lifting platform during the rotation process with an avoidance arc surface, and the second support seat also has a side facing the lifting platform during the rotation process with an avoidance arc surface; Among them, the first protrusion has a first connection end protruding from the avoidance arc surface in the horizontal direction, and the flange pushing mechanism and the inner tube clamping mechanism are arranged on the first connection end; the second protrusion has a second connection end protruding from the avoidance arc surface in the horizontal direction, and the flange pushing mechanism is arranged on the second connection end.

3. The insulating pipe elbow threading device according to claim 2, characterized in that: The height of the lifting platform connected to the prefabricated fixing frame is lower than the height of the first connecting end, and the height of the lifting platform connected to the prefabricated fixing frame is lower than the height of the second connecting end.

4. The thermal insulation pipe elbow threading device according to claim 1, characterized in that: The first support seat is provided with a radial driving mechanism for driving the first protrusion to move along the diameter direction of the central axis; the second support seat is also provided with a radial driving mechanism for driving the second protrusion to move along the diameter direction of the central axis.

5. The thermal insulation pipe elbow threading device according to claim 4, characterized in that: The radial driving mechanism on the first support seat comprises: A lead screw is arranged on a first support seat; both ends of the first support seat are provided with bearing seats respectively, and both ends of the lead screw are rotatably matched with the two bearing seats respectively; Wherein, the first protrusion has a threaded hole that matches the thread of the lead screw.

6. The thermal insulation pipe elbow threading device according to claim 1, characterized in that: The insulation pipe elbow threading equipment also includes: The gear ring is arranged on the periphery of the first support seat, the second support seat and the lifting platform with the central axis as the center position; Wherein, the first support seat and the second support seat are both provided with gears meshing with the gear ring, and the first support seat and the second support seat are respectively provided with driving motors for driving the gears to rotate.

7. The thermal insulation pipe elbow threading device according to claim 6, characterized in that: A support platform is fixedly provided on the outer sides of the first support seat and the second support seat, and a driving motor is arranged on the support platform; Among them, the support platform is also provided with an electric push rod, and the electric push rod is arranged along the height direction; a positioning hole for plugging and cooperating with the electric push rod is provided on the ground or the lifting platform.

8. The thermal insulation pipe elbow threading device according to claim 2, characterized in that: The first connecting end is provided with a plurality of slide grooves, and the plurality of slide grooves are arranged along the diameter direction of the inner tube end; the inner tube clamping mechanism comprises: A push rod, one end of which is slidably disposed in the slide groove, and the other end of which is used to abut against the end wall of the inner tube; An arc-shaped rod, one end of which is fixed on the top rod and the other end of which is used to extend into the inner tube; wherein after the arc-shaped rod extends into the inner tube, the arc-shaped rod contacts the inner circumferential wall of the inner tube; A screw rod is rotatably arranged in the slide groove; one end of the screw rod passes through the first protrusion, wherein the end of the push rod located in the slide groove has a threaded hole that matches the screw rod thread.

9. The thermal insulation pipe elbow threading device according to claim 1, characterized in that: The prefabricated fixing frame comprises: A base is connected to the lifting platform by bolts; the top of the base has an arc groove; A first arc-shaped plate is fixed on the base at the position of the arc-shaped groove; the concave surface of the first arc-shaped plate faces upward; A second curved plate, used for buckling onto the outer tube; Wherein, the first arc plate and the second arc plate are respectively provided with fixing structures, and when the first arc plate and the second arc plate clamp the outer tube, the positions of the first arc plate and the second arc plate are fixed by the fixing structures so that the first arc plate and the second arc plate clamp the outer tube.

10. A method for inserting a thermal insulation pipe elbow using the thermal insulation pipe elbow inserting device according to any one of claims 1 to 9, characterized in that: There are several pin holes on the lifting platform, and the method for threading the insulation pipe elbow includes the following steps: The inner tube is hoisted to the position of the lifting platform, and the inner tube is limited on one of the lifting platforms by the cooperation of the pin shaft and the pin hole; one end of the inner tube is located outside the lifting platform; The lifting platform is driven to rise by the lifting mechanism, and stops rising when the lifting platform drives the inner tube to rise to a preset position; The first support seat rotates to the position of the inner tube, and the inner tube clamping mechanism clamps the end of the inner tube; the lifting mechanism drives the lifting platform to descend to the initial position; Fix the prefabricated fixing frame on the lifting platform, and fix the outer tube on the prefabricated fixing frame; The first support seat rotates toward the prefabricated fixing frame, and the second support seat also rotates toward the prefabricated fixing frame; when the inner tube is sleeved inside the outer tube, the flange is pushed to the end positions of the inner tube and the outer tube by the flange pushing mechanism.

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