Anti-impact pipe fitting structure, mining equipment and anti-impact pipe fitting structure machining method

Abstract

The invention provides an anti-impact pipe fitting structure, mining equipment and an anti-impact pipe fitting structure machining method. The anti-impact pipe fitting structure comprises a pipe fitting body, a plurality of fan-shaped supporting pieces and a plurality of axial supporting pieces. The two ends of the pipe fitting body are connected with structures on mining equipment correspondingly, a gap between every two adjacent axial supporting pieces forms a circumferential interval space, and at least one fan-shaped supporting piece is arranged in each circumferential interval space. The size of the axial supporting piece in the radial direction of the pipe fitting body is larger than that of the fan-shaped supporting piece in the radial direction of the pipe fitting body so that the fan-shaped supporting piece can be all located in the circumferential interval space. According to the impact-resistant pipe fitting structure, the pipe fitting body, the multiple fan-shaped supporting pieces and the multiple axial supporting pieces are arranged to work in a matched mode, so that the overall strength and rigidity of the impact-resistant pipe fitting structure are obviously improved, the problems of deformation failure, fracture damage and the like are not prone to occurring, then the service life of a cableway shovel is prolonged, and the stability and safety of long-term work of the cableway shovel are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of supporting structures for mining equipment, and in particular to an impact-resistant pipe structure, mining equipment and a method for processing the impact-resistant pipe structure. Background Art

[0002] At present, the dragline shovel is one of the main mining equipment in the existing open-pit coal mines. Among the main components of its bucket, the support rod is the main structure used to prevent the traction chain from being disordered and affecting the normal operation of the bucket. Since the support rod collides with the crossbeam at the upper end of the bucket during the dragging and loading and unloading operation of the bucket, it needs to withstand frequent and large impacts, which makes the main body of the support rod very easy to deform under the action of the impact load and cause fatigue cracks. Even if the outer diameter Φ of the support rod is enlarged to 710mm and the wall thickness δ is enlarged to 20mm, the support rod will inevitably suffer from fracture damage, deformation failure and other faults.

[0003] Therefore, the existing support rods used to support mining bucket shovels have a short service life, poor impact resistance, and are prone to deformation failure, breakage and damage. Therefore, it is urgent to design and manufacture a pipe structure with a simple structure, simple processing and manufacturing process, high strength and impact resistance to replace the existing support rods to ensure the stable operation of the mining bucket shovel. Summary of the invention

[0004] The present invention provides an impact-resistant pipe structure, mining equipment and an impact-resistant pipe structure processing method to solve the problems in the prior art that support rods used to support mining bucket shovels have a short service life, poor impact resistance, and are prone to deformation failure and fracture damage.

[0005] In order to solve the above problems, according to one aspect of the present invention, an impact-resistant pipe structure is provided, comprising: a pipe body, a plurality of fan-shaped support members and a plurality of axial support members, wherein both ends of the pipe body are respectively connected to the structure on the mining equipment for supporting the structure on the mining equipment; the axial support member is fixedly arranged on the pipe body and is extended along the axial direction of the pipe body, the axial support member has a central axis in the axial direction of the pipe body, and the central axis of the axial support member is parallel to the central axis of the pipe body; the plurality of axial support members are spaced apart along the circumference of the pipe body; the number of the plurality of axial support members is N, where N is a natural number and is greater than 2; the gap between two adjacent axial supports forms a circumferential spacing space, then the number of circumferential spacing spaces is N; each fan-shaped support is arranged in a circumferential spacing space, and the two ends of the fan-shaped support along the circumference of the pipe body are respectively fixedly connected to the two adjacent axial supports to support the axial support; one end of the fan-shaped support along the radial direction of the pipe body is fixedly connected to the pipe body; wherein, each circumferential spacing space has at least one fan-shaped support; the size of the axial support along the radial direction of the pipe body is larger than the size of the fan-shaped support along the radial direction of the pipe body, so that all the fan-shaped supports are located in the circumferential spacing space.

[0006] Furthermore, multiple fan-shaped support members are divided into multiple support groups, each support group contains N fan-shaped support members, and the N fan-shaped support members are arranged one by one in N circumferential spacing spaces; the fan-shaped support members have a first symmetry axis in the radial direction of the pipe body, and the fan-shaped support members are symmetrically arranged relative to the first symmetry axis, and the first symmetry axes of the N fan-shaped support members in the same support group intersect at one point, and the point is located on the central axis of the pipe body; multiple support groups are arranged at equal intervals along the axial direction of the pipe body.

[0007] Furthermore, the axial support member is a plate-like structure, and the shape of the connecting end of the axial support member and the pipe body is adapted to the shape of the outer curved surface of the pipe body; the axial support member has a second symmetry axis in the radial direction of the pipe body, and the axial support member is symmetrically arranged relative to the second symmetry axis, and the second symmetry axes of N axial supports intersect at one point, and the point is located on the central axis of the pipe body; the N axial supports are equidistantly spaced along the circumference of the pipe body, and the angle between the two symmetry axes of two adjacent axial supports is 360° / N.

[0008] Furthermore, the fan-shaped support member is a plate-like structure; the thickness of the fan-shaped support member is not less than 30 mm, and the fan-shaped support member is made of alloy steel plate; the connecting end of the fan-shaped support member and the pipe body has a first arc surface, and the shape of the first arc surface is adapted to the shape of the external arc surface of the pipe body; the inner diameter of the first arc surface is not less than 230 mm; the other end of the fan-shaped support member along the radial direction of the pipe body has a second arc surface, and the second arc surface is arranged parallel to the first arc surface, and the inner diameter of the second arc surface is not less than 400 mm.

[0009] Furthermore, the dimension of the axial support along the axial direction of the pipe body is not less than 6500mm; the pipe body is a hollow tube structure, the outer diameter of the pipe body is not less than 230mm, and the wall thickness is not less than 20mm; the thickness of the axial support is not less than 30mm, and the axial support is made of alloy steel plate material.

[0010] Furthermore, the pipe body and the fan-shaped support member are fixedly connected by welding, the pipe body and the axial support member are fixedly connected by welding, and the fan-shaped support member and the axial support member are fixedly connected by welding.

[0011] Furthermore, the impact-resistant pipe structure also includes an elastic buffer, which is detachably arranged on the outside of at least one of the pipe body, the fan-shaped support and the axial support. The elastic buffer is made of elastic material and is used to buffer external impact.

[0012] According to another aspect of the present invention, a mining equipment is provided, which includes the above-mentioned impact-resistant pipe structure, and the mining equipment also includes a bucket; the two ends of the pipe body of the impact-resistant pipe structure are respectively fixedly connected to the bucket and other structures of the mining equipment to support the bucket; and / or the two ends of the axial support are respectively fixedly connected to the bucket and other structures of the mining equipment.

[0013] According to another aspect of the present invention, a method for processing an impact-resistant pipe structure is provided. The method for processing an impact-resistant pipe structure is used to process the above-mentioned impact-resistant pipe structure. The method for processing an impact-resistant pipe structure comprises the following steps: S1, according to an existing drill pipe used in a mine, cutting off the inner tapered threaded joint and the outer tapered threaded joint at both ends of the drill pipe, and then processing the remaining part to form a pipe body with an outer diameter of not less than 230 mm and a wall thickness of not less than 20 mm; S2, cutting the alloy steel plate material by laser cutting to form a plurality of fan-shaped support members and a plurality of axial The support member, the axial support member is cut into a rectangular plate shape, the thickness of the rectangular plate is not less than 30mm, the dimension of the rectangular plate along the axial direction of the pipe body is not less than 6500mm, and the width of the rectangular plate is not less than 155mm. Then the axial support member needs to be welded and fixed in position for processing to form a welding groove, which is used to accommodate the solder; S3, first fix the pipe body and the axial support member by welding, then fix the pipe body and the fan-shaped support member by welding, and finally fix the fan-shaped support member and the axial support member by welding.

[0014] Furthermore, in step S3, the welding position to be welded shall be preheated during welding, and the preheating temperature range is 120°C±5°C; after welding, insulation treatment shall be performed, and the temperature range of the weld position shall be controlled to be 150°C~200°C, and the insulation time shall be within the range of 2~2.5 hours; and / or, in step S3, carbon dioxide gas shielded welding shall be adopted for welding, low-carbon flux-cored wire shall be selected as the solder, and ultrasonic flaw detection shall be performed on the weld position after welding, and the defective position shall be ground and cleaned with an angle grinder before repair welding.

[0015] Applying the technical solution of the present invention, the present invention proposes an impact-resistant pipe structure, comprising: a pipe body, a plurality of fan-shaped support members and a plurality of axial support members, wherein both ends of the pipe body are respectively connected to the structure on the mining equipment for supporting the structure on the mining equipment; the axial support member is fixedly arranged on the pipe body and is extended along the axial direction of the pipe body, the axial support member has a central axis in the axial direction of the pipe body, and the central axis of the axial support member is parallel to the central axis of the pipe body; the plurality of axial support members are spaced apart along the circumference of the pipe body; the number of the plurality of axial support members is N, N is a natural number and is greater than or equal to 2; the two The gaps between adjacent axial supports form a circumferential spacing space, so there are N circumferential spacing spaces; each fan-shaped support is arranged in a circumferential spacing space, and the two ends of the fan-shaped support along the circumference of the pipe body are respectively fixedly connected to two adjacent axial supports to support the axial support; one end of the fan-shaped support along the radial direction of the pipe body is fixedly connected to the pipe body; wherein, there is at least one fan-shaped support in each circumferential spacing space; the size of the axial support along the radial direction of the pipe body is larger than the size of the fan-shaped support along the radial direction of the pipe body, so that all the fan-shaped supports are located in the circumferential spacing space.

[0016] The present invention significantly improves the overall strength and rigidity of the impact-resistant pipe structure by arranging a pipe main body, a plurality of fan-shaped support members and a plurality of axial support members to cooperate with each other, and can be efficiently used in mining bucket shovels to replace the existing support rod structure. The present invention has a long service life, good impact resistance, and is not prone to deformation failure, fracture damage and other problems, thereby extending the overall service life of the mining bucket shovel, improving the stability of long-term operation, and ensuring that it can carry out production work safely and efficiently; by arranging at least one fan-shaped support member in each circumferential interval space, it is guaranteed that the fan-shaped support members respectively support the pipe main body and the axial support members, and the layout of the plurality of fan-shaped support members is reasonable, which further facilitates the lightweight design of the impact-resistant pipe structure; by arranging the axial support members to have a radial dimension greater than that of the pipe main body The radial dimensions of the fan-shaped support members along the pipe body ensure that all of the fan-shaped support members are located within the circumferential spacing, thereby effectively protecting the fan-shaped support members and avoiding damage caused by collisions between the fan-shaped support members and external objects, thereby ensuring that the fan-shaped support members reliably support the pipe body and the axial support members respectively. The present invention forms a stable support structure through the special design of multiple fan-shaped support members and multiple axial support members, thereby enhancing the overall torsion and bending resistance. The present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can efficiently replace existing support rods to ensure the stable operation of mining bucket shovels, and is suitable for large-scale promotion and use. In addition, the pipe body in the present invention can be subsequently processed using existing waste drill rods, which not only realizes the recycling of resources, but also reduces production costs while meeting strength and stiffness requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the external structure of an impact-resistant pipe structure provided by an embodiment of the present invention is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of a portion of the structure of a medium impact-resistant pipe fitting in a side view;

[0020] Figure 3 A partial structural schematic diagram of an impact-resistant pipe structure provided by another embodiment of the present invention is shown at another angle.

[0021] The above drawings include the following reference numerals:

[0022] 10. Pipe fitting body;

[0023] 20. fan-shaped support member; 21. first symmetry axis; 22. first arc surface; 23. second arc surface;

[0024] 30. Axial support member; 31. Circumferential spacing space; 32. Second symmetry axis. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, an embodiment of the present invention provides an impact-resistant pipe structure, comprising: a pipe body 10, a plurality of fan-shaped support members 20 and a plurality of axial support members 30, wherein both ends of the pipe body 10 are respectively connected to the structure on the mining equipment for supporting the structure on the mining equipment; the axial support members 30 are fixedly arranged on the pipe body 10 and are extended along the axial direction of the pipe body 10, and the axial support members 30 have a central axis in the axial direction of the pipe body 10, and the central axis of the axial support members 30 is parallel to the central axis of the pipe body 10; the plurality of axial support members 30 are distributed at intervals along the circumference of the pipe body 10; the number of the plurality of axial support members 30 is N, where N is a natural number and is greater than or equal to 2; two adjacent axial support members 30 are arranged at intervals along the circumference of the pipe body 10; The gaps between the supports 30 form a circumferential spacing space 31, and there are N circumferential spacing spaces 31; each fan-shaped support member 20 is arranged in a circumferential spacing space 31, and the two ends of the fan-shaped support member 20 along the circumference of the pipe body 10 are respectively fixedly connected to two adjacent axial supports 30 to support the axial support member 30; one end of the fan-shaped support member 20 along the radial direction of the pipe body 10 is fixedly connected to the pipe body 10; wherein, each circumferential spacing space 31 has at least one fan-shaped support member 20; the size of the axial support member 30 along the radial direction of the pipe body 10 is larger than the size of the fan-shaped support member 20 along the radial direction of the pipe body 10, so that all the fan-shaped support members 20 are located in the circumferential spacing space 31.

[0027] The present invention significantly improves the overall strength and rigidity of the impact-resistant pipe structure by arranging a pipe body 10, a plurality of fan-shaped supports 20 and a plurality of axial supports 30 to cooperate with each other, and can be efficiently used in mining bucket shovels to replace the existing support rod structure. The present invention has a long service life, good impact resistance, and is not prone to deformation failure, fracture damage and other problems, thereby extending the overall service life of the mining bucket shovel, improving the stability of long-term operation, and ensuring that it can carry out production work safely and efficiently; by arranging at least one fan-shaped support 20 in each circumferential spacing space 31, it is guaranteed that the fan-shaped support 20 has a supporting strength for the pipe body 10 and the axial support 30 respectively, and the layout of the plurality of fan-shaped supports 20 is reasonable, which further facilitates the lightweight design of the impact-resistant pipe structure; by arranging the axial support 30 to have a radial dimension larger than the fan along the pipe body 10 The radial dimension of the fan-shaped support members 20 along the pipe body 10 enables all of the fan-shaped support members 20 to be located within the circumferential spacing space 31, thereby effectively protecting the fan-shaped support members 20 and preventing the fan-shaped support members 20 from being damaged by collisions with external objects, thereby ensuring that the fan-shaped support members 20 reliably support the pipe body 10 and the axial support members 30 respectively; the present invention forms a stable support structure through the special design of multiple fan-shaped support members 20 and multiple axial support members 30, thereby enhancing the overall torsion and bending resistance; the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can efficiently replace existing support rods to ensure the stable operation of mining bucket shovels, and is suitable for large-scale promotion and use; in addition, the pipe body 10 in the present invention can be subsequently processed using existing waste drill rods, which not only realizes the recycling of resources, but also reduces production costs while meeting strength and stiffness requirements.

[0028] like Figure 1 and Figure 2 As shown, a plurality of fan-shaped support members 20 are divided into a plurality of support groups, each support group includes N fan-shaped support members 20, and the N fan-shaped support members 20 are arranged one by one in N circumferential spacing spaces 31; the fan-shaped support members 20 have a first symmetry axis 21 in the radial direction of the pipe body 10, and the fan-shaped support members 20 are symmetrically arranged relative to the first symmetry axis 21, and the first symmetry axes 21 of the N fan-shaped support members 20 in the same support group intersect at one point, and the point is located on the central axis of the pipe body 10; the plurality of support groups are arranged equidistantly along the axial direction of the pipe body 10.

[0029] By setting up fan-shaped support members 20 and grouping the fan-shaped support members 20 so that the number of fan-shaped support members 20 in each group matches the number of axial support members 30, uniform support of the structure is ensured; by designing the first axis of symmetry 21, each fan-shaped support member 20 is precisely aligned, thereby enhancing the symmetry and stability of the structure. Multiple groups of support groups are arranged at intervals along the axial direction, which can further optimize the impact resistance distribution of the structure and reduce local stress concentration.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the axial support 30 is a plate-like structure, and the shape of the connecting end of the axial support 30 and the pipe body 10 is adapted to the shape of the outer arc surface of the pipe body 10; the axial support 30 has a second symmetry axis 32 in the radial direction of the pipe body 10, and the axial support 30 is symmetrically arranged relative to the second symmetry axis 32, and the second symmetry axes 32 of N axial supports 30 intersect at one point, and the point is located on the central axis of the pipe body 10; the N axial supports 30 are equidistantly spaced along the circumference of the pipe body 10, and the angle between the second symmetry axes 32 of two adjacent axial supports 30 is 360° / N.

[0031] Through the optimized design of the axial support 30, the axial support 30 is designed as a plate-like structure, and the shape of its connecting end is adapted to the outer arc surface of the pipe body 10, thereby ensuring the welding quality and the sealing of the structure; through the symmetrical design and equidistant distribution of the second symmetry axis 32, the balance and axial stability of the structure are ensured, and the angle between adjacent supports is precisely controlled, which helps to disperse and evenly distribute the impact force.

[0032] like Figure 2 and Figure 3 As shown, the fan-shaped support member 20 is a plate-like structure; the thickness of the fan-shaped support member 20 is not less than 30 mm, and the fan-shaped support member 20 is made of alloy steel plate; the connecting end of the fan-shaped support member 20 and the pipe body 10 has a first arc surface 22, and the shape of the first arc surface 22 is adapted to the shape of the external arc surface of the pipe body 10; the inner diameter of the first arc surface 22 is not less than 230 mm; the other end of the fan-shaped support member 20 along the radial direction of the pipe body 10 has a second arc surface 23, and the second arc surface 23 is arranged parallel to the first arc surface 22, and the inner diameter of the second arc surface 23 is not less than 400 mm.

[0033] By providing a fan-shaped support 20, the thickness of the fan-shaped support 20 is not less than 30 mm and alloy steel plate material is used, the strength and impact resistance of the structure are increased; the design of the first arc surface 22 and the second arc surface 23 ensures a close connection with the pipe body 10 while maintaining the radial support strength of the structure; the radial dimension of the fan-shaped support 20 is designed to be smaller than the axial support 30, which is beneficial to avoid interference between structural parts and improve the compactness and reliability of the structure.

[0034] like Figure 2 As shown, the dimension of the axial support 30 along the axial direction of the pipe body 10 is not less than 6500 mm; the pipe body 10 is a hollow tube structure, the outer diameter of the pipe body 10 is not less than 230 mm, and the wall thickness is not less than 20 mm; the thickness of the axial support 30 is not less than 30 mm, and the axial support 30 is made of alloy steel plate material.

[0035] By setting the structure of the axial support 30 and the pipe body 10, the size and material requirements are clarified, especially the hollow tube structure of the pipe body 10, combined with the size and material selection of the axial support 30, the lightweight and high-strength characteristics of the structure are ensured; the structural design of the hollow tube can reduce the overall weight while maintaining sufficient impact resistance and support capabilities.

[0036] like Figure 1 As shown, the pipe body 10 and the fan-shaped support member 20 are fixedly connected by welding, the pipe body 10 and the axial support member 30 are fixedly connected by welding, and the fan-shaped support member 20 and the axial support member 30 are fixedly connected by welding.

[0037] By fixing and connecting the pipe body 10, the fan-shaped support member 20 and the axial support member 30 by welding, a high-strength permanent connection can be formed to improve the rigidity and reliability of the structure; the preheating, insulation treatment and post-weld flaw detection steps in the welding process further ensure the welding quality and durability of the structural parts.

[0038] Specifically, the impact-resistant pipe structure also includes an elastic buffer, which is detachably arranged on the outside of at least one of the pipe body 10, the fan-shaped support 20 and the axial support 30. The elastic buffer is made of elastic material and is used to buffer external impact.

[0039] By arranging a detachable elastic buffer on the outside of the structural member, additional impact energy can be effectively absorbed, the structural member can be protected from direct impact damage, and the service life can be extended; the elastic buffer is made of elastic material and can be replaced according to actual usage, thereby improving the maintainability and adaptability of the structure.

[0040] like Figure 1 As shown, the mining equipment includes the above-mentioned impact-resistant pipe structure, and the mining equipment also includes a bucket; the two ends of the pipe body 10 of the impact-resistant pipe structure are respectively fixedly connected to the bucket and other structures of the mining equipment to support the bucket; and / or, the two ends of the axial support 30 are respectively fixedly connected to the bucket and other structures of the mining equipment.

[0041] By setting up an impact-resistant pipe structure and applying it to mining equipment, especially the supporting structure related to the bucket, the stability and safety of the bucket during operation can be significantly improved, the structural damage and maintenance frequency caused by impact can be reduced, and the operating efficiency and economy of the equipment can be optimized.

[0042] The present invention also provides a method for processing an impact-resistant pipe structure. The method is used to process the above-mentioned impact-resistant pipe structure. The method comprises the following steps:

[0043] S1. According to the existing drill pipe used in the mine, the inner tapered threaded joint and the outer tapered threaded joint at both ends of the drill pipe are cut off, and then the remaining part is processed to form a pipe body 10 with an outer diameter of not less than 230mm and a wall thickness of not less than 20mm; S2. The alloy steel plate material is cut by laser cutting to form a plurality of fan-shaped supports 20 and a plurality of axial supports 30. The axial supports 30 are cut into a rectangular plate shape. The thickness of the rectangular plate is not less than 30mm. The size of the rectangular plate along the axial direction of the pipe body 10 is not less than 6500mm, and the width of the rectangular plate is not less than 155mm. Then the axial supports 30 are processed at the position where they need to be welded to form a welding groove, which is used to accommodate the solder; S3. The pipe body 10 is first fixedly connected to the axial support 30 by welding, and then the pipe body 10 is fixedly connected to the fan-shaped support 20 by welding, and finally the fan-shaped support 20 is fixedly connected to the axial support 30 by welding.

[0044] By designing a processing method for the impact-resistant pipe fitting structure, including: the reuse of waste drill pipes, the application of laser cutting technology and the specification of welding technology, combined with the high-quality production, preheating, insulation and post-weld inspection steps of the impact-resistant pipe fitting structure, the reliability and production efficiency of the structure are further improved; at the same time, the fan-shaped support member 20 is made by laser cutting technology, which ensures the cutting accuracy and shape accuracy, and improves the assembly quality and service life of the structural member; in addition, the support rod end ear seat can be additionally installed later to facilitate the connection with other mechanical parts, thereby enhancing the versatility and adaptability of the structural member; this solution significantly improves the performance of mining machinery structural members and reduces manufacturing costs by optimizing design and material utilization, and has significant economic benefits and environmental protection value.

[0045] Specifically, in step S3, the welding position to be welded shall be preheated during welding, and the preheating temperature range is 120°C±5°C; after welding, insulation treatment shall be performed, and the temperature range of the weld position shall be controlled to be 150°C~200°C, and the insulation time shall be within the range of 2~2.5 hours; and / or, in step S3, carbon dioxide gas shielded welding is adopted as the welding method, low-carbon flux-cored welding wire is selected as the solder, and ultrasonic flaw detection is performed on the weld position after welding, and the defective position is ground and cleaned with an angle grinder before repair welding.

[0046] Through the control of welding process, including detailed specifications of welding process, preheating temperature, insulation treatment conditions and post-weld inspection methods, the welding quality is ensured, welding defects are avoided, and the integrity and durability of the structure are enhanced; the use of carbon dioxide gas shielded welding and low-carbon flux-cored welding wire improves the welding efficiency and the corrosion resistance of the structural parts.

[0047] In another embodiment of the present invention not shown in the figure, the two ends of the pipe body 10 of the impact-resistant pipe structure are respectively fixedly connected to the bucket and other structures of the mining equipment, where the other structures of the mining equipment include but are not limited to at least one of the structures such as the boom, the rotating shaft, the hydraulic system and the control system; the main function of the pipe body 10 is to support the bucket so that it can be stably suspended on the bucket shovel equipment; there can be a direct connection between the pipe body 10 and the bucket; the pipe body 10 is connected to the main structure of the bucket shovel equipment through the boom; the boom is a key component connecting the bucket and the equipment body, and the pipe body 10 transfers the weight of the bucket to the equipment body through the boom; the pipe body 10 and the rotating shaft The bucket is connected so that it can rotate within a certain range; the rotating shaft is the key component connecting the support rod and the boom, which allows the bucket to rotate flexibly during the excavation process; hydraulic system: the movement and adjustment of the pipe body 10 are usually controlled by the hydraulic system; the hydraulic system drives the support rod through a hydraulic cylinder or a hydraulic motor, so that it can be extended and adjusted as needed; the movement and adjustment of the pipe body 10 also requires the cooperation of the control system; the control system controls the hydraulic system to perform corresponding operations on the support rod by receiving instructions from the operator; in summary, the pipe body 10 and the above-mentioned structures can work together to ensure that the bucket can be stably suspended on the equipment and flexibly adjusted during the excavation process.

[0048] In a specific embodiment of the present invention, the axial support member 30 is made of a low-alloy high-strength steel plate by laser cutting, and its material selection, groove angle and quantity can be flexibly changed according to the actual effect requirements of the production site; the fan-shaped support member 20 is made of a low-alloy high-strength steel plate by laser cutting, and its material selection and quantity can be formulated according to the selection standard of the axial support member 30;

[0049] In addition, it should be noted that the axial supports 30 and the fan-shaped supports 20 are respectively arranged on the pipe body 10 with a length of 6500 mm, and the fan-shaped supports 20 are evenly spaced and installed between each adjacent axial supports 30. When positioning each adjacent fan-shaped support 20, they can be in the same plane or staggered with a certain gap.

[0050] Optionally, the design size of the axial support member 30 can be changed according to the length, outer diameter and other dimensions of the pipe body 10 and the number of the fan-shaped support members 20; the design size of the fan-shaped support member 20 can be changed according to the outer diameter of the pipe body 10; the number of the fan-shaped support members 20 and the axial support members 30 can be determined according to the actual use of the strut after it is manufactured. When in use, the strut end ears can be added to the two ends of the manufactured impact-resistant pipe structure by welding to form a complete total strut member.

[0051] It should be noted that the purpose of using a pipe structure to replace tubular profiles is to reduce the impact point, buffer the force, reduce the impact load, disperse the instantaneous impact force, and meet the requirements of the outer diameter size of the strut when it is in operation. Therefore, the pipe structure design invention is a seamless steel pipe made of Cr steel with an inner diameter of 230mm and a wall thickness of about 20mm, or a thick-walled low-alloy high-strength steel pipe, and it is expanded outward using a low-alloy high-strength steel plate with a wall thickness of 30mm, in order to extend the outermost end diameter edge to 710mm. The fan-shaped support 20 and the axial support 30 in the middle play the role of strengthening the structure and positioning the spacing. After continuous attempts at the production application site, the number of axial supports 30 is best arranged in a circle of 9 to 11, the spacing between the fan-shaped supports 20 is best at 200 to 250mm, and the outermost circular surface of the fan-shaped support should be 10mm lower than the outer end surface of the axial support 30 for the best; the positioning of the fan-shaped support 20 between two adjacent axial supports 30 should be staggered as the best fixing method; the axial support 30 and the fan-shaped support members form a grid or honeycomb shape. Although the axial support member 30 and the fan-shaped rib plate are grid-like structures, they are gridded as the main structure. During operation, they bear irregular impact forces from multiple points from the outside to the inside. The main purpose of gridding is to reduce external impact stress points and reduce the bearing area of ​​stress concentration and deformation caused by impact force; the instantaneous external impact force is unloaded and dispersed through the structure to play a buffering role; the present invention replaces large-diameter tubular metal profiles in the mechanical manufacturing process of the total support rod, and replaces the original tubular profiles in the manufacturing process of the bucket shovel support rod, which plays a role in enhancing the strength of the total support rod, improving its impact resistance, reducing the frequency of support rod breakage, extending its service life, reducing the frequency and labor intensity of staff replacing the support rod, and reducing the safety risk of maintenance.

[0052] In summary, the present invention provides an impact-resistant pipe structure, mining equipment and a method for processing an impact-resistant pipe structure. The impact-resistant pipe structure significantly improves the overall strength and rigidity of the impact-resistant pipe structure by setting a pipe body 10, a plurality of fan-shaped supports 20 and a plurality of axial supports 30 to cooperate with each other, and can be efficiently used in mining bucket shovels to replace the existing support rod structure. The present invention has a long service life, good impact resistance, and is not prone to deformation failure, fracture damage and other problems, thereby extending the overall service life of the mining bucket shovel, improving the stability of long-term work, and ensuring that it can carry out production work safely and efficiently; by setting each circumferential spacing space 31 with at least one fan-shaped support 20, it is guaranteed that the fan-shaped support 20 has a supporting strength for the pipe body 10 and the axial support 30 respectively, and the layout of the plurality of fan-shaped supports 20 is reasonable, which further facilitates the lightweight design of the impact-resistant pipe structure; by setting The radial dimension of the axial support 30 along the pipe body 10 is larger than the radial dimension of the fan-shaped support 20 along the pipe body 10, so that the fan-shaped support 20 is completely located in the circumferential spacing space 31, which effectively protects the fan-shaped support 20 and avoids the fan-shaped support 20 from being damaged by collision with external objects, thereby ensuring the reliable support of the pipe body 10 and the axial support 30 by the fan-shaped support 20 respectively; through the special design of multiple fan-shaped support members 20 and multiple axial support members 30, a stable support structure is formed, and the overall torsion and bending resistance are enhanced; the present invention has a simple structure and low cost, is easy to assemble and subsequently maintain, can efficiently replace the existing support rods to ensure the stable operation of the mining bucket shovel, and is suitable for large-scale promotion and use; in addition, the pipe body 10 in the present invention can be subsequently processed using existing waste drill rods, which not only realizes the recycling of resources, but also reduces the production cost under the premise of meeting the strength and stiffness requirements.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An impact-resistant pipe structure, characterized in that: include: A pipe body (10), a plurality of fan-shaped support members (20) and a plurality of axial support members (30), wherein both ends of the pipe body (10) are respectively connected to a structure on a mining device for supporting the structure on the mining device; the axial support member (30) is fixedly arranged on the pipe body (10) and is extended along the axial direction of the pipe body (10); the axial support member (30) has a central axis in the axial direction of the pipe body (10), and the central axis of the axial support member (30) is parallel to the central axis of the pipe body (10); the plurality of axial support members (30) are distributed at intervals along the circumference of the pipe body (10); the number of the plurality of axial support members (30) is N, where N is a natural number and is greater than or equal to 2; the gap between two adjacent axial support members (30) forms a circumferential spacing space (31), Then there are N circumferential spacing spaces (31); each of the fan-shaped support members (20) is arranged in one of the circumferential spacing spaces (31), and the two ends of the fan-shaped support member (20) along the circumference of the pipe body (10) are respectively fixedly connected to two adjacent axial support members (30) to support the axial support member (30); one end of the fan-shaped support member (20) along the radial direction of the pipe body (10) is fixedly connected to the pipe body (10); wherein each of the circumferential spacing spaces (31) has at least one fan-shaped support member (20); the size of the axial support member (30) along the radial direction of the pipe body (10) is larger than the size of the fan-shaped support member (20) along the radial direction of the pipe body (10), so that all of the fan-shaped support members (20) are located in the circumferential spacing spaces (31).

2. The impact-resistant pipe structure according to claim 1, characterized in that: The plurality of fan-shaped support members (20) are divided into a plurality of support groups, each of the support groups comprising N fan-shaped support members (20), and the N fan-shaped support members (20) are arranged one by one in the N circumferential spacing spaces (31); the fan-shaped support members (20) have a first symmetry axis (21) in the radial direction of the pipe body (10), and the fan-shaped support members (20) are symmetrically arranged relative to the first symmetry axis (21), and the first symmetry axes (21) of the N fan-shaped support members (20) in the same support group intersect at a point, and the point is located on the central axis of the pipe body (10); the plurality of support groups are arranged equidistantly along the axial direction of the pipe body (10).

3. The impact-resistant pipe structure according to claim 1, characterized in that: The axial support member (30) is a plate-like structure, and the shape of the connecting end of the axial support member (30) and the pipe body (10) is adapted to the shape of the outer arc surface of the pipe body (10); the axial support member (30) has a second symmetry axis (32) in the radial direction of the pipe body (10), and the axial support member (30) is symmetrically arranged relative to the second symmetry axis (32), and the second symmetry axes (32) of N axial support members (30) intersect at a point, and the point is located on the central axis of the pipe body (10); the N axial support members (30) are equidistantly distributed along the circumference of the pipe body (10), and the angle between the second symmetry axes (32) of two adjacent axial support members (30) is 360° / N.

4. The impact-resistant pipe structure according to claim 1, characterized in that: The fan-shaped support member (20) is a plate-like structure; the thickness of the fan-shaped support member (20) is not less than 30 mm, and the fan-shaped support member (20) is made of alloy steel plate; the connection end of the fan-shaped support member (20) and the pipe body (10) has a first curved surface (22), and the shape of the first curved surface (22) is adapted to the shape of the outer curved surface of the pipe body (10); the inner diameter of the first curved surface (22) is not less than 230 mm; the other end of the fan-shaped support member (20) along the radial direction of the pipe body (10) has a second curved surface (23), and the second curved surface (23) is arranged parallel to the first curved surface (22), and the inner diameter of the second curved surface (23) is not less than 400 mm.

5. The impact-resistant pipe structure according to claim 1, characterized in that: The dimension of the axial support member (30) along the axial direction of the pipe body (10) is not less than 6500 mm; the pipe body (10) is a hollow tube structure, the outer diameter of the pipe body (10) is not less than 230 mm, and the wall thickness is not less than 20 mm; the thickness of the axial support member (30) is not less than 30 mm, and the axial support member (30) is made of alloy steel plate material.

6. The impact-resistant pipe structure according to claim 1, characterized in that: The pipe body (10) and the fan-shaped support member (20) are fixedly connected by welding, the pipe body (10) and the axial support member (30) are fixedly connected by welding, and the fan-shaped support member (20) and the axial support member (30) are fixedly connected by welding.

7. The impact-resistant pipe structure according to claim 1, characterized in that: The impact-resistant pipe structure also includes an elastic buffer, which is detachably arranged on the outside of at least one of the pipe body (10), the fan-shaped support (20) and the axial support (30), and the elastic buffer is made of elastic material and is used to buffer external impact.

8. A mining device, characterized in that: The mining equipment comprises the impact-resistant pipe structure according to any one of claims 1 to 7, and the mining equipment also comprises a bucket; the two ends of the pipe body (10) of the impact-resistant pipe structure are respectively fixedly connected to the bucket and other structures of the mining equipment to support the bucket; and / or the two ends of the axial support member (30) are respectively fixedly connected to the bucket and other structures of the mining equipment.

9. A method for processing an impact-resistant pipe structure, characterized in that: The impact-resistant pipe structure processing method is used to process the impact-resistant pipe structure according to any one of claims 1 to 7, and the impact-resistant pipe structure processing method comprises the following steps: S1. According to an existing drill pipe used in mining, the inner tapered threaded joint and the outer tapered threaded joint at both ends of the drill pipe are cut off, and then the remaining parts are processed to form the pipe body (10) with an outer diameter of not less than 230 mm and a wall thickness of not less than 20 mm; S2. Cutting the alloy steel plate material by laser cutting to form a plurality of the fan-shaped support members (20) and a plurality of the axial support members (30), wherein the axial support members (30) are cut into a rectangular plate shape, wherein the thickness of the rectangular plate is not less than 30 mm, the dimension of the rectangular plate along the axial direction of the pipe body (10) is not less than 6500 mm, and the width of the rectangular plate is not less than 155 mm, and then the axial support members (30) are processed at the positions to be welded and fixed to form welding grooves, wherein the welding grooves are used to accommodate the solder; S3. First, the pipe body (10) and the axial support member (30) are fixedly connected by welding, then the pipe body (10) and the fan-shaped support member (20) are fixedly connected by welding, and finally, the fan-shaped support member (20) and the axial support member (30) are fixedly connected by welding.

10. The method for processing an impact-resistant pipe structure according to claim 9, characterized in that: In the step S3, the welding position needs to be preheated during welding, and the preheating temperature range is 120°C±5°C; after welding, insulation treatment is performed, and the temperature range of the weld position is controlled to be 150°C~200°C, and the insulation time is within the range of 2 to 2.5 hours; and / or, in the step S3, the welding method adopts carbon dioxide gas shielded welding, the solder is selected as low-carbon flux-cored wire, and the weld position is subjected to ultrasonic flaw detection after welding, and the defective position is polished and cleaned with an angle grinder before repair welding.

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