A metal pipe sizing device

Abstract

The utility model relates to a kind of metal tubular product sizing device, including rack, lower roller group, upper roller group, left side roller group and right side roller group connected on rack, rack includes bottom plate, oppositely arranged U-shaped left support, U-shaped right support, the connecting beam of respectively detachably connected in U-shaped left support top and U-shaped right support top, U-shaped left support and U-shaped right support are fixedly connected on bottom plate.The utility model constructs rack using U-shaped left support, U-shaped right support and connecting beam, each roller group is assembled, when needing to maintain each roller group, user can make U-shaped left support, U-shaped right support upper end open by removing connecting beam, then each roller group is hoisted from U-shaped left support, U-shaped right support upper end and is transferred to maintenance point for maintenance, after maintenance is completed, each roller group is sequentially assembled to rack from U-shaped left support, U-shaped right support upper end, can improve maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to a metal pipe sizing device. Background Technology

[0002] The sizing process for steel pipes is one of the crucial steps in a steel pipe production line, directly determining the roundness, surface roughness, and circumferential residual stress distribution of the pipe. Currently, the commonly used sizing process employs two-roll, three-roll, or four-roll extrusion sizing devices. A sizing machine is a machine used for shaping and sizing steel pipes. It generally consists of a main body and sizing roller dies arranged in top, bottom, left, and right positions within each main body. In actual use, multiple sizing machines need to be arranged sequentially along the direction of the steel pipe's sizing movement. Therefore, mounting bases must be provided to ensure that each main body of the sizing machine can be fixed in place. The higher the precision of the steel pipe, the more sizing machines are arranged sequentially, and thus, the more mounting bases are needed to match and install each main body.

[0003] Chinese patent CN112605151B discloses a metal pipe sizing device. This device has an integral frame structure, with each roller assembly installed inside. When disassembling and maintaining each roller assembly, the components can be removed from one side of the frame for repair or replacement. However, because multiple sets of metal pipe sizing devices are arranged sequentially on the production line, and the spacing between adjacent sets is small, this support structure presents significant difficulties for repairing and replacing the internal components. In practice, the components cannot be removed from the side of the frame; instead, the entire metal pipe sizing device must be disassembled from the production line, hoisted to an open area, laid flat, and then disassembled. This results in long maintenance times and reduced production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a metal pipe sizing device to solve the technical problem of inconvenience in disassembling each roller assembly during online maintenance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a metal pipe sizing device, including a frame, a lower roller group, an upper roller group, a left roller group and a right roller group connected to the frame, the lower roller group, the upper roller group, the left roller group and the right roller group together form a sizing hole, the frame includes a base plate, a U-shaped left support and a U-shaped right support arranged opposite to each other, and connecting beams detachably connected to the top of the U-shaped left support and the top of the U-shaped right support respectively, the U-shaped left support and the U-shaped right support are fixedly connected to the base plate;

[0006] The lower roller assembly includes a lower rotating shaft with its two ends rotatably connected to the U-shaped left support and the U-shaped right support respectively, and a lower pressure wheel located between the U-shaped left support and the U-shaped right support and sleeved on the lower rotating shaft. One end of the lower rotating shaft extends out of the U-shaped left support or the U-shaped right support for connecting to the drive device.

[0007] The upper roller group and the lower roller group are arranged opposite each other. The upper roller group includes an upper rotating shaft parallel to the lower rotating shaft, a bushing fixedly sleeved on the upper rotating shaft, and an upper pressure wheel sleeved on the bushing. The two ends of the upper rotating shaft are respectively rotatably connected to a slider. The two sliders are respectively vertically slidably connected to the left U-shaped support and the right U-shaped support. One end of the upper rotating shaft extends out of the slider for connecting to the drive device.

[0008] The left roller group includes a sliding seat fixedly connected to a U-shaped left bracket, a left shaft seat slidably connected to the sliding seat, a left rotating shaft rotatably connected to the left shaft seat, and a left pressure roller sleeved on the left rotating shaft. The axial direction of the left rotating shaft is perpendicular to the upper rotating shaft. The left roller group is located between the upper roller group and the lower roller group.

[0009] The right roller assembly includes a right shaft seat fixedly connected to a U-shaped right bracket, a right rotating shaft rotatably connected to the right shaft seat, and a right pressure roller sleeved on the right rotating shaft. The right rotating shaft is parallel to the left rotating shaft, and the right pressure roller is opposite to the left pressure roller.

[0010] The surfaces of the upper pressure roller, lower pressure roller, left pressure roller, and right pressure roller are close to each other and form a sizing hole;

[0011] Each of the two connecting beams is equipped with a worm gear screw jack. The input shafts of the two worm gear screw jacks are coaxial and connected by a transmission rod. The input shaft of one of the worm gear screw jacks is connected to the lifting driver. The screws of the two worm gear screw jacks pass vertically through the connecting beam below and are connected to the two sliders one by one. The lifting driver drives the two sliders to rise and fall through the two worm gear screw jacks, thereby driving the upper roller group to rise and fall.

[0012] A sliding driver is connected to the sliding seat. The output shaft of the sliding driver is connected to the left shaft seat, driving the left shaft seat to slide along the sliding seat. The sliding direction of the left shaft seat is parallel to the axial direction of the upper rotating shaft.

[0013] A positioning seat is rotatably connected to the bushing. A guide hole is provided on the positioning seat. The axis of the guide hole is parallel to the sliding direction of the slider. The guide hole is located above the sliding seat. A guide post is vertically connected to the sliding seat and is slidably inserted into the guide hole.

[0014] As a preferred embodiment, longitudinally extending grooves are symmetrically provided on the inner walls of both sides of the U-shaped left support. The two sides of the slider are slidably inserted into the corresponding grooves. The two ends of the lower rotating shaft are also slidably connected to the U-shaped left support and the U-shaped right support respectively through the sliders. The lower ends of the sliders at both ends of the lower rotating shaft are rigidly abutted against the bottom of the U-shaped grooves of the U-shaped left support and the U-shaped right support.

[0015] As a preferred embodiment, the right shaft seat is slidably connected to the U-shaped right bracket, and the upper end of the right shaft seat is detachably fixed to the right end slider of the upper rotating shaft, moving up and down with the right end slider of the upper rotating shaft.

[0016] As a preferred embodiment, the sliding seat is slidably connected to the U-shaped left bracket, and the sliding seat is detachably fixed to the slider at the left end of the lower rotating shaft.

[0017] The beneficial effects of this utility model are as follows: This utility model utilizes a U-shaped left support, a U-shaped right support, and a connecting beam to construct a frame for assembling each roller group. When maintenance of each roller group is required, the user can remove the connecting beam to open the upper ends of the U-shaped left and right supports, and then lift each roller group from the upper ends of the U-shaped left and right supports and transport it to the maintenance point for maintenance. After maintenance is completed, each roller group can be assembled back onto the frame from the upper ends of the U-shaped left and right supports in sequence. There is no need to readjust the position of the frame, and the maintenance process does not require disassembling the entire metal pipe sizing device from the production line, thus improving maintenance efficiency. Attached Figure Description

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a front view structural schematic diagram of the metal pipe sizing device described in this utility model;

[0020] Figure 2 This is a left-side view of the metal pipe sizing device described in this utility model;

[0021] Figure 1 and Figure 2 Components: 1. Base plate; 2. U-shaped left support; 3. U-shaped right support; 4. Connecting beam; 5. Lower rotating shaft; 6. Lower pressure roller; 7. Upper rotating shaft; 8. Bushing; 9. Upper pressure roller; 10. Slider; 11. Sliding seat; 12. Left shaft seat; 13. Left rotating shaft; 14. Left pressure roller; 15. Right shaft seat; 16. Right rotating shaft; 17. Right pressure roller; 18. Sizing hole; 19. Worm gear screw jack; 20. Transmission rod; 21. Lifting drive; 22. Sliding drive; 23. Positioning seat; 24. Guide hole; 25. Guide column; 26. Slide groove; 27. Connecting piece. Detailed Implementation

[0022] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 The metal pipe sizing device shown includes a frame, a lower roller group, an upper roller group, a left roller group, and a right roller group connected to the frame. The lower roller group, the upper roller group, the left roller group, and the right roller group together form a sizing hole. The frame includes a base plate 1, a U-shaped left support 2 and a U-shaped right support 3 arranged opposite to each other, and a connecting beam 4 detachably connected to the top of the U-shaped left support 2 and the top of the U-shaped right support 3, respectively. The U-shaped left support 2 and the U-shaped right support 3 are fixedly connected to the base plate 1.

[0024] The lower roller assembly includes a lower rotating shaft 5, which is rotatably connected to the U-shaped left support 2 and the U-shaped right support 3 at both ends, and a lower pressure wheel 6 located between the U-shaped left support 2 and the U-shaped right support 3 and sleeved on the lower rotating shaft 5. One end of the lower rotating shaft 5 extends out of the U-shaped left support 2 or the U-shaped right support 3 for connecting to the drive device (not shown in the figure).

[0025] The upper roller group and the lower roller group are arranged opposite each other. The upper roller group includes an upper rotating shaft 7 parallel to the lower rotating shaft 5, a bushing 8 fixedly sleeved on the upper rotating shaft 7, and an upper pressure roller 9 sleeved on the bushing 8. The two ends of the upper rotating shaft 7 are respectively rotatably connected to a slider 10. The two sliders 10 are respectively vertically slidably connected to the U-shaped left support 2 and the U-shaped right support 3. One end of the upper rotating shaft 7 extends out of the slider 10 for connecting to the drive device (not shown in the figure).

[0026] The left roller group includes a sliding seat 11 fixedly connected to the U-shaped left bracket 2, a left shaft seat 12 slidably connected to the sliding seat 11, a left rotating shaft 13 rotatably connected to the left shaft seat 12, and a left pressure roller 14 sleeved on the left rotating shaft 13. The axial direction of the left rotating shaft 13 is perpendicular to the upper rotating shaft 7. The left roller group is located between the upper roller group and the lower roller group.

[0027] The right roller assembly includes a right shaft seat 15 fixedly connected to the U-shaped right support 3, a right rotating shaft 16 rotatably connected to the right shaft seat 15, and a right pressure roller 17 sleeved on the right rotating shaft 16. The right rotating shaft 15 is parallel to the left rotating shaft 13, and the right pressure roller 17 is opposite to the left pressure roller 14.

[0028] The surfaces of the upper pressure roller 9, lower pressure roller 6, left pressure roller 14, and right pressure roller 17 are close to each other and form a sizing hole 18;

[0029] Each of the two connecting beams 4 is equipped with a worm gear screw jack 19. The input shafts of the two worm gear screw jacks 19 are coaxially arranged and connected by transmission rods 20. The input shaft of one of the worm gear screw jacks 19 is connected to the lifting driver 21. The screws of the two worm gear screw jacks 19 pass vertically through the connecting beams 4 below and are connected to the two sliders 10 one by one. The lifting driver 21 drives the two sliders 10 to rise and fall through the two worm gear screw jacks 19, thereby driving the upper roller group to rise and fall.

[0030] A sliding actuator 22 is connected to the sliding seat 11. The output shaft of the sliding actuator 22 is connected to the left shaft seat 12, driving the left shaft seat 12 to slide along the sliding seat 11. The sliding direction of the left shaft seat 12 is parallel to the axial direction of the upper rotating shaft 7. The sliding actuator 22 can be a cylinder or a screw jack.

[0031] A positioning seat 23 is rotatably connected to the bushing 8. A guide hole 24 is provided on the positioning seat 23. The axial direction of the guide hole 24 is parallel to the sliding direction of the slider 10. The guide hole 24 is located above the sliding seat 11. A guide post 25 is vertically connected to the sliding seat 11. The guide post 25 is slidably inserted into the guide hole 24.

[0032] The inner walls of both sides of the U-shaped left support 2 are symmetrically provided with longitudinally extending grooves 26. The two sides of the slider 10 are slidably inserted into the corresponding grooves 26. The two ends of the lower rotating shaft 5 are also slidably connected to the U-shaped left support 2 and the U-shaped right support 3 respectively through the slider 10. The lower ends of the sliders 10 at both ends of the lower rotating shaft 5 are rigidly abutted against the bottom of the U-shaped grooves of the U-shaped left support 2 and the U-shaped right support 3. During operation, the lower pressure roller 6 is under pressure, and the lower roller group can be stably connected to the frame. When maintenance of the lower roller group is required, the upper roller groups can be removed and the lower roller group can be lifted.

[0033] The right shaft seat 15 is slidably connected to the U-shaped right bracket 3. The upper end of the right shaft seat 15 is detachably fixed to the right end slider 10 of the upper rotating shaft 7 and moves up and down with the right end slider 10 of the upper rotating shaft 7, so as to maintain the positional relationship between the upper pressure roller 9 and the right pressure roller 17.

[0034] The sliding seat 11 is slidably connected to the U-shaped left bracket 2. The sliding seat 11 is detachably fixed to the slider 10 at the left end of the lower rotating shaft 5 through the connector 27, thereby maintaining the positional relationship between the lower pressure roller 6 and the left pressure roller 14.

[0035] The working process of this utility model is as follows: Figure 1 and Figure 2As shown, this utility model utilizes a U-shaped left support 2, a U-shaped right support 3, and a connecting beam 4 to construct a frame for assembling each roller group. When maintenance of each roller group is required, the user can remove the connecting beam 4 to open the upper ends of the U-shaped left support 2 and the U-shaped right support 3, and then lift each roller group from the upper ends of the U-shaped left support 2 and the U-shaped right support 3 and transport it to the maintenance point for maintenance. After maintenance is completed, each roller group can be assembled back onto the frame from the upper ends of the U-shaped left support 2 and the U-shaped right support 3 in sequence. There is no need to readjust the position of the frame, and the maintenance process does not require disassembling the entire metal pipe sizing device from the production line, thus improving maintenance efficiency.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A metal pipe sizing device, comprising a frame, a lower roller group, an upper roller group, a left roller group, and a right roller group connected to the frame, wherein the lower roller group, the upper roller group, the left roller group, and the right roller group together constitute a sizing hole, characterized in that, The frame includes a base plate, a U-shaped left support and a U-shaped right support arranged opposite to each other, and connecting beams that are detachably connected to the top of the U-shaped left support and the top of the U-shaped right support, respectively. The U-shaped left support and the U-shaped right support are fixedly connected to the base plate. The lower roller assembly includes a lower rotating shaft with its two ends rotatably connected to the U-shaped left support and the U-shaped right support respectively, and a lower pressure wheel located between the U-shaped left support and the U-shaped right support and sleeved on the lower rotating shaft. One end of the lower rotating shaft extends out of the U-shaped left support or the U-shaped right support for connecting to the drive device. The upper roller group and the lower roller group are arranged opposite each other. The upper roller group includes an upper rotating shaft parallel to the lower rotating shaft, a bushing fixedly sleeved on the upper rotating shaft, and an upper pressure wheel sleeved on the bushing. The two ends of the upper rotating shaft are respectively rotatably connected to a slider. The two sliders are respectively vertically slidably connected to the left U-shaped support and the right U-shaped support. One end of the upper rotating shaft extends out of the slider for connecting to the drive device. The left roller group includes a sliding seat fixedly connected to a U-shaped left bracket, a left shaft seat slidably connected to the sliding seat, a left rotating shaft rotatably connected to the left shaft seat, and a left pressure roller sleeved on the left rotating shaft. The axial direction of the left rotating shaft is perpendicular to the upper rotating shaft. The left roller group is located between the upper roller group and the lower roller group. The right roller assembly includes a right shaft seat fixedly connected to a U-shaped right bracket, a right rotating shaft rotatably connected to the right shaft seat, and a right pressure roller sleeved on the right rotating shaft. The right rotating shaft is parallel to the left rotating shaft, and the right pressure roller is opposite to the left pressure roller. The surfaces of the upper pressure roller, lower pressure roller, left pressure roller, and right pressure roller are close to each other and form a sizing hole; Each of the two connecting beams is equipped with a worm gear screw jack. The input shafts of the two worm gear screw jacks are coaxial and connected by a transmission rod. The input shaft of one of the worm gear screw jacks is connected to the lifting driver. The screws of the two worm gear screw jacks pass vertically through the connecting beam below and are connected to the two sliders one by one. The lifting driver drives the two sliders to rise and fall through the two worm gear screw jacks, thereby driving the upper roller group to rise and fall. A sliding driver is connected to the sliding seat. The output shaft of the sliding driver is connected to the left shaft seat, driving the left shaft seat to slide along the sliding seat. The sliding direction of the left shaft seat is parallel to the axial direction of the upper rotating shaft. A positioning seat is rotatably connected to the bushing. A guide hole is provided on the positioning seat. The axis of the guide hole is parallel to the sliding direction of the slider. The guide hole is located above the sliding seat. A guide post is vertically connected to the sliding seat and is slidably inserted into the guide hole.

2. The metal pipe sizing device according to claim 1, characterized in that, The inner walls of the two sides of the U-shaped left support are symmetrically provided with longitudinally extending sliding grooves. The two sides of the slider are slidably inserted into the corresponding sliding grooves. The two ends of the lower rotating shaft are also slidably connected to the U-shaped left support and the U-shaped right support respectively through the slider. The lower ends of the sliders at both ends of the lower rotating shaft are in hard contact with the bottom of the U-shaped groove of the U-shaped left support and the U-shaped right support.

3. The metal pipe sizing device according to claim 1, characterized in that, The right shaft seat is slidably connected to the U-shaped right bracket, and the upper end of the right shaft seat is detachably fixed to the right end slider of the upper rotating shaft, and moves up and down with the right end slider of the upper rotating shaft.

4. The metal pipe sizing device according to claim 2, characterized in that, The sliding seat is slidably connected to the U-shaped left bracket, and the sliding seat is detachably fixed to the slider at the left end of the lower rotating shaft.

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