A building pipe straightening device

Abstract

The application discloses a kind of building pipe straightening device, it is related to pipe straightening technical field, including workbench, the upper side of workbench is fixedly connected with two mounting plates, multiple straightening wheels are arranged between two mounting plates, the left side of mounting plate is fixedly connected with side block, the outside of side block is provided with guide wheel, the right side of mounting plate is fixedly connected with positioning box, the upper side of positioning box is fixedly connected with paint bucket, marking unit is provided on positioning box.The building pipe straightening device, by being provided with fixed plate, sliding block, mounting ring, multiple mobile pipes, contact head, contact ball, spring two and marking spray head, after steel pipe straightening, steel pipe groove is contacted with contact ball, marking spray head sprays paint around groove, and the defect is marked, and by gear part, gear ring, bevel gear one and bevel gear two, marking spray head is conveniently controlled to rotate, so that the marking of defect is more eye-catching, and it is convenient for staff to repair later.

Description

Technical Field

[0001] This invention relates to the field of pipe straightening technology, specifically to a pipe straightening device for building applications. Background Technology

[0002] Pipes are hollow, columnar materials used to transport fluids or gases or as structural supports, typically with a hollow cross-section. They are an indispensable basic material in industrial, building, and infrastructure construction.

[0003] A search revealed a Chinese patent with application number "CN202310364003.2", which specifically describes a straightening device for building pipes. The device includes a base and a damage detection mechanism. Side plates are fixed to both sides of the upper part of the base, and several straightening wheels are rotatably mounted within the side plates. A rust removal box is fixed to one end of each side plate. The damage detection mechanism is mounted on the rust removal box and includes an mounting sleeve, a mounting box, and a cutting disc. The mounting sleeve is slidably connected to the rust removal box. Multiple locking rods are rotatably mounted on one end of the mounting sleeve, and each locking rod has a hook-like portion. The cutting disc is rotatably mounted on one side of the mounting box, and a drive motor for driving the cutting disc is located inside the mounting box. The mounting box is slidably connected to the rust removal box and can move synchronously with the mounting sleeve.

[0004] When straightening existing pipes, multiple sets of rotating straightening rollers are required. After straightening, the pipes are cut according to the defects (grooves) on the steel pipes. Most grooves can be repaired by the staff later. Directly cutting the pipes results in waste of steel pipes. After straightening, the staff need to check the grooves on the steel pipes one by one, which increases the workload of the staff. The existing pipe straightening device does not have the function of marking the grooves on the steel pipes.

[0005] Therefore, the present invention proposes a pipe straightening device for building materials to solve the above-mentioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a pipe straightening device for construction, which solves the problem that the grooves on the surface of the steel pipe cannot be marked after straightening, thus increasing the workload of workers.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pipe straightening device for construction includes a workbench. Two mounting plates are fixedly connected to the upper side of the workbench, and multiple straightening rollers are arranged between the two mounting plates. A side block is fixedly connected to the left side of the mounting plate, and a guide wheel is arranged on the outer side of the side block. A positioning box is fixedly connected to the right side of the mounting plate, and a paint bucket is fixedly connected to the upper side of the positioning box. A marking unit is provided on the positioning box, and the marking unit includes two fixed plates. The fixed plates are fixedly connected to the front and rear sides of the positioning box. A sliding groove is opened on the outer side of the fixed plate, and a slider is slidably connected to the inner side of the sliding groove. An L-shaped block is fixedly connected to the outer side of each slider on both sides. An installation ring is fixedly connected to the right side of the L-shaped block, and multiple movable tubes are arranged on the outer side of the installation ring.

[0009] Preferably, a rotating tube is rotatably connected to the inner side of the plurality of moving tubes, a contact head is fixedly connected to the lower end of the rotating tube, a mounting plate is fixedly connected to the upper side of the contact head, a marking nozzle is fixedly connected to the lower side of the mounting plate, a fixing tube is fixedly connected between the marking nozzle and the rotating tube, an annular tube is fixedly connected to the left side of the L-shaped block, a branch tube is fixedly connected between the annular tube and the moving tube, a conveying tube is fixedly connected between the paint bucket and the annular tube, and a spring is fixedly connected between the outer side of the slider and the inner wall of the chute.

[0010] Preferably, a solenoid valve is provided on the outside of the branch pipe, the branch pipe is made of flexible hose material, a contact ball is provided on the lower side of the contact head, multiple hooks are fixedly connected to the outside of the contact head, the contact ball is located below the marking nozzle, and the branch pipe is connected to the rotating pipe.

[0011] Preferably, a fixed plate is fixedly connected to the outer side of the moving tube, a second spring is fixedly connected between the fixed plate and the mounting ring, a mounting block is fixedly connected to the left side of the fixed plate, an inclined plate is rotatably connected to the outer side of the mounting block, a guide plate and the fixed ring are fixedly connected to the outer side of the mounting ring, a second guide block is slidably connected to the outer side of the guide plate, a rotating block is fixedly connected to the upper side of the second guide block, the inclined plate and the rotating block are rotatably connected, an electric push rod is fixedly connected to the outer side of the fixed ring, a moving ring is fixedly connected to the left end of the electric push rod, multiple connecting rods are fixedly connected to the left side of the moving ring, a push block is fixedly connected to the left end of the connecting rod, and a contact block is fixedly connected to the outer side of the second guide block.

[0012] Preferably, the push block is located to the left of the contact block, the moving tube is slidably connected to the mounting ring, and the moving ring is slidably connected to the mounting ring.

[0013] Preferably, a bevel gear is fixedly connected to the outer side of the rotating tube, a rotating rod is rotatably connected to the outer side of the moving tube, a bevel gear is fixedly connected to the left end of the rotating rod and meshes with the bevel gear, a gear component is fixedly connected to the right end of the rotating rod, a guide groove is provided on the right side of the mounting ring, a guide block is slidably connected to the inner side of the guide groove, a toothed ring is fixedly connected to the right side of the guide block, a rotating ring is fixedly connected to the right side of the toothed ring, an oblique groove is provided on the upper side of the rotating ring, a top frame is fixedly connected to the upper side of the fixing plate, a bottom rod is fixedly connected to the lower side of the top frame, and the lower end of the bottom rod is located inside the oblique groove.

[0014] Preferably, a fixing block is fixedly connected to the right side of the rotating ring, a lifting rod is provided on the outer side of the fixing block, a motor is fixedly connected to the lower end of the lifting rod, a grinding disc is fixedly connected to the lower output end of the motor, a connecting plate is fixedly connected to the outer side of the lifting rod, and a spring is fixedly connected between the connecting plate and the fixing block.

[0015] Preferably, a side plate is fixedly connected to the right side of the L-shaped block, an arc-shaped plate is fixedly connected to the right side of the side plate, a protrusion is fixedly connected to the upper side of the arc-shaped plate, and the bottom rod is slidably connected to the arc-shaped plate and the protrusion.

[0016] This invention provides a pipe straightening device for construction. Compared with the prior art, it has the following advantages:

[0017] (1) The pipe straightening device for building is equipped with a fixed plate, a slider, an installation ring, multiple movable pipes, a contact head, a contact ball, a spring and a marking nozzle. After the steel pipe is straightened, the groove of the steel pipe contacts the contact ball, and the marking nozzle sprays paint around the groove to mark the defect. The marking nozzle is controlled by gear parts, a gear ring, a bevel gear one and a bevel gear two, making the marking of the defect more conspicuous and convenient for workers to repair later.

[0018] (2) The pipe straightening device for building is equipped with a rotating ring, inclined groove, bottom rod, fixed block, lifting rod and grinding disc. When marking the groove, the grinding disc is controlled to grind the steel pipe, so that the grinding trajectory is in sharp contrast with the surrounding rust, making it easy for staff to quickly find the repair location. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the marking unit in this invention;

[0021] Figure 3 This is a partial three-dimensional structural diagram of the marking unit in this invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the mounting ring in this invention;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a cross-sectional perspective view of the movable tube in this invention;

[0025] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0026] Figure 8 for Figure 6 Enlarged view of point C in the middle;

[0027] Figure 9 This is a three-dimensional structural diagram of the transfer ring in this invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the transfer ring in this invention from another perspective;

[0029] Figure 11 for Figure 10 Enlarged view of point D in the middle.

[0030] In the diagram: 1. Workbench; 2. Mounting plate; 3. Straightening wheel; 4. Side block; 5. Guide wheel; 6. Positioning box; 7. Paint bucket; 8. Marking unit; 81. Fixing plate; 82. Slide groove; 83. Slider; 84. Spring 1; 85. L-shaped block; 86. Conveying pipe; 87. Ring pipe; 88. Top frame; 89. Branch pipe; 810. Solenoid valve; 811. Mounting ring; 812. Guide groove; 813. Guide block 1; 814. Moving pipe; 815. Fixing plate; 816. Spring 2; 817. Mounting block; 818. Inclined plate; 819. Guide plate; 820. Guide block 2; 821. Rotating block; 822. Contact block; 823. 824. Push block; 825. Connecting rod; 826. Moving ring; 827. Fixed ring; 828. Electric push rod; 829. Rotating tube; 830. Contact head; 831. Mounting plate; 832. Contact ball; 833. Marking nozzle; 834. Fixed tube; 835. Bevel gear one; 836. Bevel gear two; 837. Rotating rod; 838. Gear component; 839. Rotating ring; 840. Angled groove; 841. Base rod; 842. Side plate; 843. Arc plate; 844. Protrusion; 845. Fixed block; 846. Lifting rod; 847. Connecting plate; 848. Spring three; 849. Motor; 850. Grinding disc. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides the following technical solutions:

[0033] Example 1:

[0034] Please see Figure 1 - Figure 8 A pipe straightening device for construction includes a workbench 1. Two mounting plates 2 are fixedly connected to the upper side of the workbench 1, and multiple straightening wheels 3 are arranged between the two mounting plates 2. Side blocks 4 are fixedly connected to the left side of the mounting plates 2, and guide wheels 5 are arranged on the outer side of the side blocks 4. A positioning box 6 is fixedly connected to the right side of the mounting plates 2, and a paint bucket 7 is fixedly connected to the upper side of the positioning box 6. A marking unit 8 is provided on the positioning box 6. The marking unit 8 includes two fixed plates 81, which are fixedly connected to the front and rear sides of the positioning box 6. A sliding groove 82 is opened on the outer side of the fixed plate 81, and a slider 83 is slidably connected to the inner side of the sliding groove 82. L-shaped blocks 85 are fixedly connected to the outer sides of both sliders 83. An installation ring 811 is fixedly connected to the right side of the L-shaped blocks 85. Multiple moving tubes 814 are provided on the outer side of the installation ring 811. A drive component is provided on the outer side of the mounting plate 2 to facilitate the rotation of multiple straightening wheels 3. The straightening wheels 3 on both sides straighten the steel pipe. Circular holes are opened on both the left and right sides of the positioning box 6 to facilitate the steel pipe to pass through the positioning box 6. The groove of the steel pipe is marked by the marking unit 8. A pump body is provided on the inner side of the paint bucket 7. The pump body is connected to the conveying pipe 86 to facilitate the extraction of white paint from the paint bucket 7 for subsequent marking.

[0035] A rotating tube 828 is rotatably connected to the inner side of multiple moving tubes 814. A contact head 829 is fixedly connected to the lower end of the rotating tube 828. A mounting plate 830 is fixedly connected to the upper side of the contact head 829. A marking nozzle 832 is fixedly connected to the lower side of the mounting plate 830. A fixed tube 833 is fixedly connected between the marking nozzle 832 and the rotating tube 828. An annular tube 87 is fixedly connected to the left side of the L-shaped block 85. A branch tube 89 is fixedly connected between the annular tube 87 and the moving tube 814. A conveying tube 86 is fixedly connected between the paint bucket 7 and the annular tube 87. A spring 84 is fixedly connected between the outer side of the slider 83 and the inner wall of the chute 82. A solenoid valve 810 is provided on the outer side of the branch tube 89. The branch tube 89 is made of flexible hose material. A contact ball 831 is provided on the lower side of the contact head 829. Multiple hooks are fixedly connected to the outer side of the contact head 829. The contact ball 831 is located at the marking nozzle 832. Below, branch pipe 89 connects to rotating pipe 828. The hook is set with an inclined structure, and the hook contacts the groove to prevent the contact ball 831 from separating from the groove when the steel pipe moves. In use, the steel pipe passes through mounting ring 811 and rotating ring 839. At this time, multiple contact balls 831 are in close contact with the steel pipe under the action of spring 816. The contact balls 831 roll on the contact head 829. When the steel pipe surface is grooved, the contact head 829 descends into the groove under the elastic force of spring 816. When the steel pipe moves, it drives the mounting ring 811 to move. The corresponding solenoid valve 810 is activated. Under the action of delivery pipe 86, ring pipe 87 and branch pipe 89, paint is introduced into the inside of rotating pipe 828 and sprayed onto the steel pipe by marking nozzle 832 through fixed pipe 833. This facilitates marking around the groove and makes it easier for staff to repair defects later.

[0036] A fixed plate 815 is fixedly connected to the outer side of the moving tube 814. A spring 816 is fixedly connected between the fixed plate 815 and the mounting ring 811. A mounting block 817 is fixedly connected to the left side of the fixed plate 815. An inclined plate 818 is rotatably connected to the outer side of the mounting block 817. A guide plate 819 and a fixed ring 826 are fixedly connected to the outer side of the mounting ring 811. A guide block 820 is slidably connected to the outer side of the guide plate 819. A rotating block 821 is fixedly connected to the upper side of the guide block 820. The inclined plate 818 and the rotating block... 821 is rotatably connected. An electric push rod 827 is fixedly connected to the outer side of the fixed ring 826. A moving ring 825 is fixedly connected to the left end of the electric push rod 827. Multiple connecting rods 824 are fixedly connected to the left side of the moving ring 825. A push block 823 is fixedly connected to the left end of the connecting rod 824. A contact block 822 is fixedly connected to the outer side of the guide block 820. The push block 823 is located to the left of the contact block 822. The moving tube 814 is slidably connected to the mounting ring 811. The moving ring 825 is slidably connected to the mounting ring 811. In a sliding connection, after the steel pipe straightening is completed, the electric push rod 827 drives the moving ring 825 to move to the right. The moving ring 825 drives the right end of the connecting rod 824, which in turn drives the push block 823 to move. The push block 823 drives the contact block 822 to move to the right, which in turn drives the guide block 820 to move to the right. The guide block 820 then drives the inclined plate 818 to rotate. The inclined plate 818 drives the fixed plate 815 on the mounting block 817 to move, which in turn drives the moving tube 814 to move. The moving tube 814 then... The movable contact ball 831 moves, causing multiple contact balls 831 to move away from the steel pipe, facilitating the steel pipe to pass through the right side of the mounting ring 811. At this time, the control moving ring 825 drives the push block 823 to move to the left, causing the push block 823 to separate from the contact block 822. When the contact ball 831 contacts the groove, the contact block 822 moves to the left. After marking is completed, the electric push rod 827 drives the push block 823 to move, causing the contact ball 831 to separate from the groove. At this time, under the action of the spring 84, the mounting ring 811 is reset.

[0037] A bevel gear 834 is fixedly connected to the outer side of the rotating tube 828. A rotating rod 836 is rotatably connected to the outer side of the moving tube 814. A bevel gear 835, which meshes with the bevel gear 834, is fixedly connected to the left end of the rotating rod 836. A gear component 837 is fixedly connected to the right end of the rotating rod 836. A guide groove 812 is provided on the right side of the mounting ring 811. A guide block 813 is slidably connected to the inner side of the guide groove 812. A gear is fixedly connected to the right side of the guide block 813. Ring 838, a rotating ring 839 is fixedly connected to the right side of the gear ring 838. The upper side of the rotating ring 839 has an inclined groove 840. A top frame 88 is fixedly connected to the upper side of the fixing plate 81. A bottom rod 841 is fixedly connected to the lower side of the top frame 88. The lower end of the bottom rod 841 is located inside the inclined groove 840. The gear component 837 does not contact the gear ring 838. When the contact ball 831 moves to the inside of the groove, it causes the moving tube 814 to drive the gear on the rotating rod 836. As wheel 837 descends, it engages gear 837 with gear ring 838. At this time, mounting ring 811 drives rotating ring 839 to move. Under the action of bottom rod 841 and inclined groove 840, rotating ring 839 rotates, rotating ring 839 drives gear ring 838 to rotate, gear ring 838 drives corresponding gear 837 to rotate, gear 837 drives rotating rod 836 to rotate, rotating rod 836 drives bevel gear 2 835 to rotate, bevel gear 2 835 drives bevel gear 1 834 to rotate, bevel gear 1 834 drives rotating tube 828 to rotate, rotating tube 828 drives contact head 829 to rotate, causing contact head 829 to drive contact ball 831 to rotate to grind the rust in the groove, facilitating subsequent repairs. At the same time, contact head 829 drives mounting plate 830 to rotate, mounting plate 830 drives marking nozzle 832 to rotate, facilitating the formation of a ring mark around the groove, making it easier for workers to find the groove location more quickly during later repairs.

[0038] Example 2:

[0039] Based on Example 1, such as Figure 9 - Figure 11As shown, a fixing block 845 is fixedly connected to the right side of the rotating ring 839. A lifting rod 846 is provided on the outer side of the fixing block 845. A motor 849 is fixedly connected to the lower end of the lifting rod 846. A grinding disc 850 is fixedly connected to the lower output end of the motor 849. A connecting disc 847 is fixedly connected to the outer side of the lifting rod 846. A spring 848 is fixedly connected between the connecting disc 847 and the fixing block 845. A side plate 842 is fixedly connected to the right side of the L-shaped block 85. An arc-shaped plate 843 is fixedly connected to the right side of the side plate 842. The upper side of the arc-shaped plate 843 is fixedly connected to the side of the arc-shaped plate 843. The fixed connection has a protrusion 844, and the bottom rod 841 is slidably connected to the arc plate 843 and the protrusion 844. The rotating ring 839 drives the lifting rod 846 on the fixed block 845 to rotate. Under the action of the protrusion 844, the lifting rod 846 drives the grinding disc 850 to move closer to the steel pipe. At the same time, the motor 849 is started to drive the grinding disc 850 to rotate, so that the grinding disc 850 grinds the arc-shaped trajectory around the groove of the steel pipe, so that the steel pipe exposes the metal color and forms a conspicuous symmetry with the surrounding rust, becoming a very conspicuous bright mark, making it easier for workers to find the groove.

[0040] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0041] During operation, the bent steel pipe is first placed between two straightening rollers 3 to straighten it. Simultaneously, the electric push rod 827 moves the moving ring 825, which in turn moves the push block 823. Under the action of the contact block 822, guide block 820, inclined plate 818, and fixed plate 815, multiple moving tubes 814 move. These moving tubes 814 move the contact balls 831 away from the steel pipe. When the steel pipe passes through the rotating ring 839, the electric push rod 827 is reset, causing the contact balls 831 to contact the steel pipe. When the contact balls 831 contact the groove, the spring 816 moves them to the inside of the groove. The steel pipe continues to move, causing the mounting ring 811 to move... The installation ring 811 drives the rotating ring 839 to move. Under the action of the inclined groove 840 and the bottom rod 841, the rotating ring 839 rotates, which in turn drives the gear ring 838 to rotate. As the moving tube 814 moves, it drives the gear component 837 to mesh with the gear ring 838, causing the gear ring 838 to drive the corresponding gear component 837 to rotate. Under the action of the rotating rod 836, bevel gear 2 835, and bevel gear 1 834, the rotating tube 828 is controlled to rotate. The rotating tube 828 drives the contact ball 831 and the marking nozzle 832 to rotate. At the same time, the solenoid valve 810 is activated. Under the action of the delivery tube 86, the ring tube 87, and the branch tube 89, the marking nozzle 832 sprays paint onto the surface of the steel pipe, which facilitates marking around the groove of the steel pipe and makes it easier for workers to repair later.

[0042] At the same time, the rotating ring 839 drives the grinding disc 850 to rotate. Under the action of the protrusion 844 and the arc plate 843, the motor 849 drives the grinding disc 850 to rotate, which facilitates the formation of obvious metallic color around the groove of the steel pipe, and helps the staff to quickly find the groove.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe straightening device for construction, comprising a workbench (1), characterized in that: Two mounting plates (2) are fixedly connected to the upper side of the workbench (1). Multiple straightening wheels (3) are arranged between the two mounting plates (2). A side block (4) is fixedly connected to the left side of the mounting plate (2). A guide wheel (5) is arranged on the outer side of the side block (4). A positioning box (6) is fixedly connected to the right side of the mounting plate (2). A paint bucket (7) is fixedly connected to the upper side of the positioning box (6). A marking unit (8) is arranged on the positioning box (6). The marking unit (8) includes two fixed plates (81). The fixed plates (81) are fixedly connected to the front and rear sides of the positioning box (6). A sliding groove (82) is opened on the outer side of the fixed plate (81). A slider (83) is slidably connected to the inner side of the sliding groove (82). An L-shaped block (85) is fixedly connected to the outer side of the slider (83) on both sides. An installation ring (811) is fixedly connected to the right side of the L-shaped block (85). Multiple moving tubes (814) are arranged on the outer side of the installation ring (811). A rotating tube (828) is rotatably connected to the inner side of multiple movable tubes (814). A bevel gear (834) is fixedly connected to the outer side of the rotating tube (828). A rotating rod (836) is rotatably connected to the outer side of the movable tubes (814). A bevel gear (835) meshing with the bevel gear (834) is fixedly connected to the left end of the rotating rod (836). A gear component (837) is fixedly connected to the right end of the rotating rod (836). A guide groove (812) is provided on the right side of the mounting ring (811). A guide block (813) is slidably connected to the inner side of the guide groove (812). A toothed ring (838) is fixedly connected to the right side of the guide block (813). A rotating ring (839) is fixedly connected to the right side of the toothed ring (838). An inclined groove (840) is opened on the upper side of the rotating ring (839). A top frame (88) is fixedly connected to the upper side of the fixed plate (81). A bottom rod (841) is fixedly connected to the lower side of the top frame (88). The lower end of the bottom rod (841) is located inside the inclined groove (840). A fixing block (845) is fixedly connected to the right side of the rotating ring (839). A lifting rod (846) is provided on the outside of the fixing block (845). A motor (849) is fixedly connected to the lower end of the lifting rod (846). A grinding disc (850) is fixedly connected to the lower output end of the motor (849). A connecting disc (847) is fixedly connected to the outside of the lifting rod (846). A spring (848) is fixedly connected between the connecting disc (847) and the fixing block (845). A side plate (842) is fixedly connected to the right side of the L-shaped block (85). An arc plate (843) is fixedly connected to the right side of the side plate (842). A protrusion (844) is fixedly connected to the upper side of the arc plate (843). The bottom rod (841) is slidably connected to the arc plate (843) and the protrusion (844).

2. The pipe straightening device for construction as described in claim 1, characterized in that: The lower end of the rotating tube (828) is fixedly connected to a contact head (829), the upper side of the contact head (829) is fixedly connected to a mounting plate (830), the lower side of the mounting plate (830) is fixedly connected to a marking nozzle (832), a fixing pipe (833) is fixedly connected between the marking nozzle (832) and the rotating tube (828), the left side of the L-shaped block (85) is fixedly connected to an annular pipe (87), the annular pipe (87) and the moving pipe (814) are fixedly connected to a branch pipe (89), the paint bucket (7) and the annular pipe (87) are fixedly connected to a conveying pipe (86), and a spring (84) is fixedly connected between the outer side of the slider (83) and the inner wall of the groove (82).

3. The pipe straightening device for construction according to claim 2, characterized in that: A solenoid valve (810) is provided on the outside of the branch pipe (89). The branch pipe (89) is made of hose material. A contact ball (831) is provided on the lower side of the contact head (829). Multiple hooks are fixedly connected to the outside of the contact head (829). The contact ball (831) is located below the marking nozzle (832). The branch pipe (89) is connected to the rotating pipe (828).

4. A pipe straightening device for construction according to claim 3, characterized in that: A fixed plate (815) is fixedly connected to the outside of the moving tube (814). A spring (816) is fixedly connected between the fixed plate (815) and the mounting ring (811). A mounting block (817) is fixedly connected to the left side of the fixed plate (815). An inclined plate (818) is rotatably connected to the outside of the mounting block (817). A guide plate (819) and a fixed ring (826) are fixedly connected to the outside of the mounting ring (811). A guide block (820) is slidably connected to the outside of the guide plate (819). A rotating block (821) is fixedly connected to the upper side of (820), the inclined plate (818) is rotatably connected to the rotating block (821), an electric push rod (827) is fixedly connected to the outer side of the fixed ring (826), a moving ring (825) is fixedly connected to the left end of the electric push rod (827), a plurality of connecting rods (824) are fixedly connected to the left side of the moving ring (825), a push block (823) is fixedly connected to the left end of the connecting rod (824), and a contact block (822) is fixedly connected to the outer side of the guide block two (820).

5. A pipe straightening device for construction according to claim 4, characterized in that: The push block (823) is located to the left of the contact block (822), the moving tube (814) is slidably connected to the mounting ring (811), and the moving ring (825) is slidably connected to the mounting ring (811).

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