Seamless steel tube perforating machine and modular rack device thereof

Abstract

The invention discloses a seamless steel pipe perforating machine and a modular rack device thereof, and belongs to the technical field of seamless steel pipe perforating machines. The modular rack device comprises a first rack, a second rack symmetrically arranged on one side of the first rack, a first cross beam connected between one end of the first rack and one end of the second rack through a fastener, and a second cross beam connected between the other end of the first rack and the other end of the second rack through a fastener; the modular design concept is adopted, the whole machine frame is divided into a plurality of independent module parts, the weight of a single machined part is greatly reduced, the machining manufacturability of the parts is effectively improved, all modules can be matched with existing conventional machining equipment, the machining precision control difficulty is reduced, and meanwhile the machining precision is improved. The split module parts are convenient to transport by adopting conventional transportation equipment, so that the transportation cost and the transportation risk are obviously reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of seamless pipe piercing, and particularly relates to a seamless pipe piercing mill and a modular frame device thereof. BACKGROUND

[0002] In the field of rolling machinery, seamless pipe production is an important branch industry, and a piercing mill, as the core equipment for producing seamless pipes, directly determines the forming quality and production efficiency of the pipes. The frame device of the piercing mill, as the main bearing structure of the piercing mill, has the core function of installing key working components such as rolls, adjusting mechanisms, guide sleeves, and stably bearing huge rolling forces in the rolling process, and is the basis for ensuring the continuous and stable operation of the piercing mill. In small and medium-sized seamless pipe production units, the main frame of the piercing mill is usually designed in an integral casting structure. Such a frame generally weighs less than 120 tons, and with the advantage of moderate weight, it has a relatively low operation difficulty in processes such as machining and manufacturing, component assembly, long-distance transportation, and on-site installation and debugging, and can better adapt to the production needs of small units.

[0003] With the increasing demand for large-diameter and thick-walled seamless pipes in the industrial field, large-scale piercing mills are increasingly widely used, and the weight of the frame of the large-scale piercing mill has broken through 500 tons. If the traditional integral structure design is still used, the super large volume will lead to a series of technical problems: the machining equipment is difficult to match, the precision control difficulty increases sharply; special super-heavy equipment is needed during transportation, which is high in cost and high in risk; the lifting and positioning precision during on-site installation is difficult to guarantee, and the construction period is greatly prolonged. The existing structure cannot meet the practical needs of large-scale piercing mills. In view of the above, there is an urgent need for a seamless pipe piercing mill and a modular frame device thereof. SUMMARY

[0004] To solve the above-mentioned technical problems in the prior art, the present application provides a seamless pipe piercing mill and a modular frame device thereof.

[0005] In one aspect of the present application, a modular frame device of a seamless pipe piercing mill is provided, comprising a first frame, a second frame symmetrically arranged on one side of the first frame, a first cross beam connected between one end of the first frame and one end of the second frame through fasteners, and a second cross beam connected between the other end of the first frame and the other end of the second frame through the fasteners, wherein: A third cross beam is arranged between the first frame and the second frame below the first cross beam, and a fourth cross beam is arranged between the first frame and the second frame below the second cross beam, and the first cross beam is parallel to the second cross beam; The third crossbeam is connected to the first frame and the second frame on both sides by fasteners, the fourth crossbeam is connected to the first frame and the second frame on both sides by fasteners, and a fifth crossbeam is connected between the bottom of the first frame and the bottom of the second frame by fasteners.

[0006] Furthermore, in the modular frame device of the aforementioned seamless steel pipe piercing machine, a first support key, a second support key, a third support key, and a fourth support key are horizontally arranged sequentially from top to bottom on the inner sides of both ends of the first frame and the inner sides of both ends of the second frame. A first keyway and a second keyway matching the first support key and the second support key are provided at both ends of the first crossbeam and both ends of the second crossbeam. A third keyway and a fourth keyway matching the third support key and the fourth support key are provided on both sides of the third crossbeam and both sides of the fourth crossbeam.

[0007] Furthermore, in the modular frame device of the aforementioned seamless steel pipe piercing machine, a first positioning key is vertically arranged between the first support key and the second support key, a second positioning key is vertically arranged between the third support key and the fourth support key, a fifth keyway matching the first positioning key is provided at both ends of the first crossbeam and both ends of the second crossbeam, and a sixth keyway matching the second positioning key is provided on both sides of the third crossbeam and both sides of the fourth crossbeam.

[0008] Furthermore, in the modular frame device of the aforementioned seamless steel pipe piercing machine, a set of first mounting holes is respectively opened in the four areas of the upper left, lower left, upper right, and lower right of the first frame, and a set of second mounting holes corresponding to the first mounting holes is respectively opened in the four areas of the upper left, lower left, upper right, and lower right of the second frame. Both the first mounting holes and the second mounting holes are matched with the fasteners.

[0009] Furthermore, in the modular frame device of the aforementioned seamless steel pipe piercing machine, the number of the first mounting holes in each group is 4 to 8, and the number of the second mounting holes in each group is 4 to 8.

[0010] Furthermore, in the modular frame device of the aforementioned seamless steel pipe piercing machine, the fasteners are fastening bolts.

[0011] In another aspect of the invention, a seamless steel pipe piercing machine is also provided, the seamless steel pipe piercing machine comprising the above-described modular frame device.

[0012] The seamless steel pipe piercing machine and its modular frame device of the present invention have the following advantages and positive effects: (1) The present invention adopts a modular design concept, which decomposes the overall frame into multiple individual modular parts, which greatly reduces the weight of a single processed part, effectively improves the processability of the parts, enables each module to be adapted to existing conventional processing equipment, reduces the difficulty of processing accuracy control, and at the same time, the disassembled modular parts are easy to transport using conventional transportation equipment, which significantly reduces transportation costs and transportation risks. (2) In the assembly process, the present invention achieves precise support between each crossbeam and the frame by the cooperation of the support key and the keyway, and further improves the assembly positioning accuracy by the cooperation of the positioning key and the corresponding keyway, ensuring that each module forms a stable overall structure after assembly, and ensuring the stability of the frame device when subjected to huge rolling force. In addition, the modular structure makes the lifting and positioning operations during on-site installation more convenient, effectively shortening the construction cycle and improving the installation efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Fig. 1 This is a schematic diagram of the modular frame device of the seamless steel pipe piercing machine of the present invention; Fig. 2 This is a schematic diagram of the inner side of the first frame in the modular frame device of the seamless steel pipe piercing machine of the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. First frame; 2. Second frame; 3. First crossbeam; 4. Second crossbeam; 5. Third crossbeam; 6. Fourth crossbeam; 7. Fifth crossbeam; 8. Fastener; 91. First support key; 92. Second support key; 93. Third support key; 94. Fourth support key; 95. First positioning key; 96. Second positioning key. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0016] This invention provides a seamless steel pipe piercing machine and its modular frame device, such as...Figs. 1-2 As shown, the modular frame device of the seamless steel pipe piercing mill includes a first frame 1, a second frame 2 symmetrically arranged on one side of the first frame 1, a first crossbeam 3 connected between one end of the first frame 1 and one end of the second frame 2 by fasteners 8, and a second crossbeam 4 connected between the other end of the first frame 1 and the other end of the second frame 2 by fasteners 8. The first crossbeam 3 and the second crossbeam 4 form the upper frame structure of the frame. The structural dimensions of the first frame 1 and the second frame 2 are designed according to the overall specifications and load-bearing requirements of the piercing mill. They are made of high-strength alloy steel, processed by forging and heat treatment to ensure they can withstand the enormous pressure and impact generated during rolling, providing a stable installation foundation for key working components such as rolls, adjustment mechanisms, and guide sleeves. A third crossbeam 5 is provided between the first frame 1 and the second frame 2 located below the first crossbeam 3, and a fourth crossbeam 6 is provided between the first frame 1 and the second frame 2 located below the second crossbeam 4. The first crossbeam 3 is parallel to the second crossbeam 4, and the third crossbeam 5 and the fourth crossbeam 6 form the middle support structure of the frame. The third crossbeam 5 is connected to the first frame 1 and the second frame 2 on both sides by fasteners 8. The fourth crossbeam 6 is connected to the first frame 1 and the second frame 2 on both sides by fasteners 8. The bottom of the first frame 1 and the bottom of the second frame 2 are connected by a fifth crossbeam 7 by fasteners 8, forming a stable bottom structure of the frame. This multi-layer crossbeam connection structure makes the frame device form a three-dimensional load-bearing frame, which can evenly transmit the huge rolling force generated during the rolling process to each component, avoid local stress concentration, and improve the overall load-bearing capacity and service life of the frame.

[0017] In one specific embodiment, in the modular frame device of the seamless steel pipe piercing machine of the present invention, the inner sides of both ends of the first frame 1 and the inner sides of both ends of the second frame 2 are respectively provided with a first support key 91, a second support key 92, a third support key 93, and a fourth support key 94 horizontally arranged from top to bottom. These support keys are made of the frame body by an integrated forging process, and their surfaces are precision ground to ensure high flatness and roughness accuracy, which can provide a stable support surface for the crossbeam and prevent the crossbeam from shifting or deforming under stress. The two ends of the first crossbeam 3 and the two ends of the second crossbeam 4 are provided with a first keyway and a second keyway matching the first support key 91 and the second support key 92. The two sides of the third crossbeam 5 and the two sides of the fourth crossbeam 6 are provided with a third keyway and a fourth keyway matching the third support key 93 and the fourth support key 94.

[0018] In one specific embodiment, in the modular frame device of the seamless steel pipe piercing machine of the present invention, a first positioning key 95 is vertically arranged between the first support key 91 and the second support key 92, and a second positioning key 96 is vertically arranged between the third support key 93 and the fourth support key 94. The positioning key and the support key are perpendicular to each other to form a cross positioning structure. This structure can limit the installation position of the crossbeam from both horizontal and vertical directions, effectively improving the positioning accuracy of the connection between the crossbeam and the frame, ensuring that each module can be accurately connected after assembly, and ensuring the overall structural accuracy of the frame. The first crossbeam 3 and the second crossbeam 4 are provided with fifth keyways matching the first positioning key 95 at both ends, and the third crossbeam 5 and the fourth crossbeam 6 are provided with sixth keyways matching the second positioning key 96 on both sides. Each key is inserted into the corresponding keyway, which facilitates positioning and installation during assembly, and ensures tight fit between the mating surfaces, avoiding vibration caused by gaps during operation, and improving the operational stability of the frame device.

[0019] In one specific embodiment, in the modular frame device of the seamless steel pipe piercing machine of the present invention, a set of first mounting holes are respectively opened in the four areas of the upper left, lower left, upper right and lower right of the first frame 1, and a set of second mounting holes corresponding to the first mounting holes are respectively opened in the four areas of the upper left, lower left, upper right and lower right of the second frame 2. The first mounting holes and the second mounting holes are matched with fasteners 8.

[0020] In one specific embodiment, in the modular frame device of the seamless steel pipe piercing machine of the present invention, the number of first mounting holes in each group is 4 to 8, and the number of second mounting holes in each group is 4 to 8. More specifically, the number of first mounting holes in each group is 6, and the number of second mounting holes in each group is 6. Of course, the number of first mounting holes and second mounting holes needs to be set according to the size of each crossbeam in actual use.

[0021] In one specific embodiment, in the modular frame device of the seamless steel pipe piercing machine of the present invention, the fastener 8 is a fastening bolt.

[0022] On the other hand, the present invention also provides a seamless steel pipe piercing machine, which includes the above-mentioned modular frame device.

[0023] The working principle of the modular frame device of the seamless steel pipe piercing machine of the present invention is as follows: The modular design allows each module to be processed using conventional equipment, reducing processing difficulty and precision control costs. The modular design facilitates transportation, effectively reducing transportation costs and risks. During assembly, the combination of key connections and bolt fastening ensures both assembly accuracy and connection strength, making on-site installation more convenient and efficient, and significantly shortening the installation cycle.

[0024] In summary, compared with the prior art, the seamless steel pipe piercing machine and its modular frame device of the present invention have the following advantages and positive effects: (1) The present invention adopts a modular design concept, which decomposes the overall frame into multiple individual modular parts, which greatly reduces the weight of a single processed part, effectively improves the processability of the parts, enables each module to be adapted to existing conventional processing equipment, reduces the difficulty of processing accuracy control, and at the same time, the disassembled modular parts are easy to transport using conventional transportation equipment, which significantly reduces transportation costs and transportation risks. (2) In the assembly process, the present invention achieves precise support between each crossbeam and the frame by the cooperation of the support key and the keyway, and further improves the assembly positioning accuracy by the cooperation of the positioning key and the corresponding keyway, ensuring that each module forms a stable overall structure after assembly, and ensuring the stability of the frame device when subjected to huge rolling force. In addition, the modular structure makes the lifting and positioning operations during on-site installation more convenient, effectively shortening the construction cycle and improving the installation efficiency.

[0025] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used 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. Meanwhile, 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 a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular frame device for a seamless steel pipe piercing machine, characterized in that, The system includes a first frame, a second frame symmetrically arranged on one side of the first frame, a first crossbeam connected to one end of the first frame and one end of the second frame by fasteners, and a second crossbeam connected to the other end of the first frame and the other end of the second frame by the same fasteners, wherein: A third crossbeam is provided between the first frame and the second frame located below the first crossbeam, and a fourth crossbeam is provided between the first frame and the second frame located below the second crossbeam. The first crossbeam is parallel to the second crossbeam. The third crossbeam is connected to the first frame and the second frame on both sides by fasteners, the fourth crossbeam is connected to the first frame and the second frame on both sides by fasteners, and a fifth crossbeam is connected between the bottom of the first frame and the bottom of the second frame by fasteners.

2. The modular frame device of the seamless steel pipe piercing machine according to claim 1, characterized in that, The inner sides of both ends of the first frame and the inner sides of both ends of the second frame are respectively provided with a first support key, a second support key, a third support key, and a fourth support key in sequence from top to bottom. The two ends of the first crossbeam and the two ends of the second crossbeam are provided with a first keyway and a second keyway matching the first support key and the second support key, respectively. The two sides of the third crossbeam and the two sides of the fourth crossbeam are provided with a third keyway and a fourth keyway matching the third support key and the fourth support key, respectively.

3. The modular frame device of the seamless steel pipe piercing machine according to claim 2, characterized in that, A first positioning key is perpendicularly arranged between the first support key and the second support key, and a second positioning key is perpendicularly arranged between the third support key and the fourth support key. A fifth keyway matching the first positioning key is provided at both ends of the first crossbeam and both ends of the second crossbeam, and a sixth keyway matching the second positioning key is provided on both sides of the third crossbeam and both sides of the fourth crossbeam.

4. The modular frame device of the seamless steel pipe piercing machine according to claim 1, characterized in that, The first frame has a set of first mounting holes in the four areas of the upper left, lower left, upper right, and lower right. The second frame has a set of second mounting holes in the four areas of the upper left, lower left, upper right, and lower right, corresponding to the first mounting holes. Both the first mounting holes and the second mounting holes are matched with the fasteners.

5. The modular frame device of the seamless steel pipe piercing machine according to claim 4, characterized in that, The number of first mounting holes in each group is 4 to 8, and the number of second mounting holes in each group is 4 to 8.

6. The modular frame device of the seamless steel pipe piercing machine according to claim 1, characterized in that, The fasteners are fastening bolts.

7. A seamless steel pipe piercing machine, characterized in that, The seamless steel pipe piercing machine includes the modular frame device according to any one of claims 1-6.

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