Large-tension stand column pull rod structure for hydraulic device
By dividing the hydraulic device column into two parts, the inner core and the sleeve, and quenching them separately, the problem of insufficient quenching thickness of large hydraulic device columns is solved, thereby improving the strength of the column and the stability of the connection, while reducing quenching costs and equipment size.
Patent Information
- Application Number
- CN202520067711.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The large-diameter columns of large hydraulic devices have insufficient effective quenching thickness during quenching, which cannot meet the strength requirements under high tensile force.
The column structure is divided into two parts: an inner core and a sleeve. The inner and outer surfaces of the inner core and the sleeve are quenched respectively, and the inner core and the sleeve are stably connected by a fixing component to form a column structure. The quenching thickness is increased to improve the strength.
The effective quenching thickness of the column was increased to meet the requirements of high tensile force, and the quenching cost and overall equipment volume were reduced through stable connection.
Smart Images
Figure CN223890534U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic device technical field, specifically refers to a kind of big tension column pull rod structure for hydraulic device. BACKGROUND
[0002] The hydraulic device is mainly applied to compression molding, and the hydraulic device used for hub processing is taken as an example, which mainly includes a rack, an upper beam plate, an upper die, a lower die, a lower beam plate and a plurality of columns, the upper beam plate, the upper die, the lower die and the lower beam plate are all arranged in the rack, wherein the upper die and the lower die are located between the upper beam plate and the lower beam plate, the plurality of columns are all connected in the rack and the upper and lower ends thereof are exposed outside the rack, the two ends of the column are fixed with the rack through nuts to form a column pull rod structure, and the pressure generated when the upper and lower dies are closed causes the deformation of raw materials to form a hub. In the process of pressurization, the reaction force generated by the upper and lower dies mainly acts on the column pull rod, so the column needs to be quenched to achieve sufficient strength. However, for some large hydraulic devices, the pressure generated in the process of compression molding is very large, and correspondingly, the column also needs to bear greater tension. In order to meet the strength requirement, the diameter of the column in such large hydraulic devices is also very large, and when quenching the large-diameter column, only the surface of the column with a certain thickness can be effectively quenched, which results in that the strength of the large-diameter column cannot meet the requirement of large tension. SUMMARY
[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a large-tension column pull rod structure for a hydraulic device to solve the technical problem that the large-diameter column of a large hydraulic device in the prior art cannot meet the strength requirement under large tension due to small effective quenching thickness.
[0004] To solve the above technical problems, the utility model provides a large-tension column pull rod structure for a hydraulic device, which comprises a rack, a plurality of columns and a plurality of fixing assemblies. Each column comprises an inner core and a sleeve, and the inner core is inserted into the sleeve. Each column is connected in the rack, and the upper and lower ends of the inner core and the upper and lower ends of the sleeve are respectively exposed outside the upper and lower ends of the rack. The upper and lower ends of the inner core and the upper and lower ends of the sleeve are fixed with the rack through the fixing assemblies.
[0005] After adopting the above structure, the large-tension column pull rod structure for a hydraulic device has the following advantages: the column structure in the traditional hydraulic device is divided into two parts, i.e. the inner core and the sleeve. The inner and outer surfaces of the inner core and the sleeve are quenched respectively, and then the inner core is inserted into the sleeve to form a column structure. The improved column quenching thickness is the sum of the quenching thicknesses of the inner layer of the sleeve, the outer layer of the sleeve and the outer layer of the inner core, which greatly improves the effective quenching thickness of the column, improves the strength of the column, and makes the column strength meet the requirement of large tension. Moreover, the column and the rack are stably connected through the fixing assemblies.
[0006] As an improvement, the fixing assembly comprises a lower nut and an upper nut, the upper and lower ends of the inner core are exposed outside the upper and lower ends of the sleeve respectively, the upper and lower ends of the sleeve are threadedly connected with the lower nuts, one end of each lower nut is abutted against the surface of the rack, the upper and lower ends of the inner core are threadedly connected with the upper nuts, and one end of each upper nut close to the lower nut is abutted against the lower nut; by using the lower nut and the upper nut to fix the split column and the rack, the column and the rack are stably connected.
[0007] As an improvement, the inner circle of the upper and lower end faces of the sleeve is provided with a mounting hole, the end face of each upper nut close to the sleeve is provided with a protruding part, the protruding part is located in the mounting hole and is threadedly connected with the inner core; by setting the mounting hole and the protruding part, the length of the thread connection between the upper nut and the inner core is increased to meet the strength requirement of the connection structure, and the length of the inner core does not need to be lengthened, so that the overall volume of the hydraulic device is smaller; in addition, the longest quenching furnace in China can only quench a column of 24 m long, and the overall height of the column can be shortened to less than 24 m by the above structure, so as to reduce the quenching cost.
[0008] As an improvement, the fixing assembly further comprises a connecting pipe and a cover plate, the outer surfaces of the upper nut and the lower nut are sleeved with the same connecting pipe, and the end face of the connecting pipe away from the rack is fixedly connected with the end face of the upper nut away from the rack through the same cover plate; by using the connecting pipe and the cover plate to further fix the upper nut and the lower nut, the stability of the overall structure is improved.
[0009] As an improvement, the outer surfaces of the upper nut and the lower nut are respectively a first inclined surface and a second inclined surface which are inclined outwardly towards the rack, and the inner surface of the connecting pipe is a third inclined surface which is parallel to the first inclined surface and the second inclined surface; by using the first inclined surface, the second inclined surface and the third inclined surface, the connecting pipe can be separated from the upper nut and the lower nut.
[0010] As an improvement, a circular groove is arranged on the outer peripheral wall of the connecting pipe in the circumferential direction; by using the groove, a tool can be put in to facilitate the disassembly of the connecting pipe.
[0011] As an improvement, the end face of the connecting pipe away from the rack is beyond the end face of the upper nut away from the rack, a pad is connected between the end face of the upper nut away from the rack and the cover plate, and the bolt is threadedly connected with the upper nut through the cover plate and the pad; by using the height difference between the connecting pipe and the upper nut, the pad can be used to stably connect the cover plate with the connecting pipe and the upper nut.
[0012] As improvement, the utility model still includes support pipe, oil cylinder fixed plate and lower beam plate, is equipped with the cushion block between support pipe upper end and oil cylinder fixed plate, between support pipe lower end and lower beam plate, adopt this kind of structure, reduce the vibration generated in the equipment operation process, to balance the operation of equipment. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is structural schematic diagram of the utility model.
[0014] Fig. 2 It is connection structure schematic diagram of fixed assembly of the utility model in stand.
[0015] Reference signs: 1, rack;2, stand;21, inner core;211, first quenching layer;22, sleeve;221, second quenching layer;222, third quenching layer;3, fixed assembly;31, lower nut;311, abutment surface;32, upper nut;33, connecting pipe;34, cover plate;35, bolt;4, mounting hole;5, protruding portion;61, first inclined surface;62, second inclined surface;7, third inclined surface;8, groove;9, first thread;10, second thread;11, support pipe;12, oil cylinder fixed plate;13, lower beam plate. DETAILED DESCRIPTION
[0016] The utility model discloses a big tension stand pull rod structure for hydraulic device makes detailed instructions below in conjunction with the drawings.
[0017] As Figs. 1-2 shown, a big tension stand pull rod structure for hydraulic device, including rack 1, a plurality of stands 2 and a plurality of fixed assemblies 3, each stand 2 includes inner core 21 and sleeve 22, and inner core 21 is inserted in sleeve 22, and each stand 2 is connected in rack 1 and the upper and lower ends of inner core 21 and the upper and lower ends of sleeve 22 are exposed outside the upper and lower ends of rack 1 respectively, and the upper and lower ends of inner core 21 and the upper and lower ends of sleeve 22 are fixed with rack 1 through fixed assembly 3, that is to say, the upper and lower ends of inner core 21 are exposed outside the upper and lower ends of rack 1 respectively and are fixed with rack 1 by a fixed assembly 3 respectively, and the upper ends of inner core 21 and sleeve 22 are fixed by the same fixed assembly 3, similarly, the lower ends of inner core 21 and sleeve 22 are fixed by the same fixed assembly 3, and there are two fixed assemblies 3 on one stand 2.
[0018] As Fig. 2As shown, the fixing assembly 3 comprises a lower nut 31, an upper nut 32, a connecting pipe 33 and a cover plate 34. The upper and lower ends of the inner core 21 are exposed outside the upper and lower ends of the sleeve 22, that is, the upper end of the inner core 21 is higher than the sleeve 22, and the lower end of the inner core 21 is lower than the sleeve 22. The upper and lower ends of the sleeve 22 are threadedly connected with the lower nut 31. The end of each lower nut 31 towards the rack 1 abuts against the surface of the rack 1. The upper and lower ends of the inner core 21 are threadedly connected with the upper nut 32. The end of each upper nut 32 close to the lower nut 31 abuts against the lower nut 31. The inner circle of the upper and lower end faces of the sleeve 22 is provided with a mounting hole 4. The end of each upper nut 32 close to the end face of the sleeve 22 is provided with a protruding part 5 which is located in the mounting hole 4 and is threadedly connected with the inner core 21. The outer surfaces of the upper nut 32 and the lower nut 31 are sleeved with the same connecting pipe 33. The end of the connecting pipe 33 away from the rack 1 and the end of the upper nut 32 away from the rack 1 are fixedly connected with the same cover plate 34 through the bolt 35. The outer surfaces of the upper nut 32 and the lower nut 31 are respectively a first inclined surface 61 and a second inclined surface 62 which are inclined to the outside in the direction close to the rack 1. The inner surface of the connecting pipe 33 is a third inclined surface 7 which is parallel to the first inclined surface 61 and the second inclined surface 62. The end of the connecting pipe 33 away from the rack 1 is beyond the end of the upper nut 32 away from the rack 1. The end of the upper nut 32 away from the rack 1 is connected with the cover plate 34 through a pad. The bolt 35 is threadedly connected with the upper nut 32 through the cover plate 34 and the pad. The outer peripheral wall of the connecting pipe 33 is provided with an annular groove 8 in the circumferential direction.
[0019] The structure of the fixing assembly 3 at the upper end of the column 2 is specifically described as follows: the lower end of the lower nut 31 abuts against the upper end face of the rack 1, that is, as shown in FIG. 1, the lower end of the lower nut 31 is flush with the upper end face of the rack 1. Fig. 2The abutting surface 311 is shown abutting the upper end surface of the rack 1, the upper nut 32 is located above the lower nut 31, the lower end of the upper nut 32 abuts the upper end of the lower nut 31, the upper nut 32 is screwed with the inner core 21 through the first thread 9, the lower nut 31 is screwed with the sleeve 22 through the second thread 10, the lower end of the upper nut 32 is provided with the protruding part 5 extending into the mounting hole 4, the upper end of the lower nut 31 is slightly higher than the upper end of the sleeve 22, so that there is a gap between the upper end of the sleeve 22 and the upper nut 32, and the outer wall of the protruding part 5 is inclined downward and inward, the inner wall of the mounting hole 4 is parallel to the inclined surface of the outer wall of the protruding part 5, and there is also a gap between the inner wall of the mounting hole 4 and the outer wall of the protruding part 5; the outer wall of the upper nut 32 and the outer wall of the lower nut 31 are both inclined downward and outward, the outer walls of the two are flush, that is, the first inclined surface 61 is flush with the second inclined surface 62, and the inner wall of the connecting pipe 33 is the same, the upper end of the connecting pipe 33 is higher than the upper nut 32, the upper end surface of the upper nut 32 is provided with the pad, the cover plate 34 is connected to the top of the connecting pipe 33 and the upper nut 32, and is fixed with the connecting pipe 33 and the upper nut 32 through the bolts 35, and when the bolts 35 of the cover plate 34 and the upper nut 32 are tightened, the connecting pipe 33 is further moved downward, and under the action of the first inclined surface 61, the second inclined surface 62 and the third inclined surface 7, the connecting pipe 33 is more closely and stably connected with the upper nut 32 and the lower nut 31.
[0020] In the utility model, the structure of the traditional hydraulic device is divided into two parts of the inner core 21 and the sleeve 22, the inner and outer surfaces of the inner core 21 and the sleeve 22 are quenched respectively, then the inner core 21 is inserted into the sleeve 22 to form the structure of the column 2, and the quenched thickness of the improved column 2 is the sum of the quenched thicknesses of the inner layer of the sleeve 22, the outer layer of the sleeve 22 and the outer layer of the inner core 21, that is, as shown in the second quenched layer 221 of the inner layer of the sleeve 22, the third quenched layer 222 of the outer layer of the sleeve 22 and the first quenched layer 211 of the outer layer of the inner core 21, the effective quenched thickness of the column 2 is greatly improved, the strength of the column 2 is improved, the strength of the column 2 meets the demand of large pulling force, and the column 2 is stably connected with the rack 1 through the fixing assembly 3. Fig. 2 Fig. 1 As shown in the utility model, when the upper die is pressed downward, gaps are generated between the upper end of the supporting pipe 11 and the oil cylinder fixed plate 12 and between the lower end of the supporting pipe 11 and the lower beam plate 13 due to the reaction force, at this time, the gaps are filled by the pads or the shims to reduce the vibration generated in the equipment running process, so as to balance the equipment running.
[0021] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned one embodiment, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection range of the utility model.
Claims
1. A high-tensile column tie rod structure for a hydraulic device, characterized in that, The device includes a frame (1), several columns (2) and several fixing components (3). Each column (2) includes an inner core (21) and a sleeve (22). The inner core (21) is inserted into the sleeve (22). Each column (2) is connected to the frame (1) and the upper and lower ends of the inner core (21) and the upper and lower ends of the sleeve (22) are exposed outside the upper and lower ends of the frame (1). The upper and lower ends of the inner core (21) and the upper and lower ends of the sleeve (22) are fixed to the frame (1) by the fixing components (3).
2. The high-tensile column tie rod structure for hydraulic devices according to claim 1, characterized in that, The fixing component (3) includes a lower nut (31) and an upper nut (32). The upper and lower ends of the inner core (21) are exposed outside the upper and lower ends of the sleeve (22), respectively. The upper and lower ends of the sleeve (22) are threaded with the lower nut (31). The end of each lower nut (31) facing the frame (1) abuts against the surface of the frame (1). The upper and lower ends of the inner core (21) are threaded with the upper nut (32). The end of each upper nut (32) near the lower nut (31) abuts against the lower nut (31).
3. The high-tensile column tie rod structure for hydraulic devices according to claim 2, characterized in that, The upper and lower end faces of the sleeve (22) are provided with mounting holes (4), and each upper nut (32) is provided with a protrusion (5) on the end face near the sleeve (22). The protrusion (5) is located in the mounting hole (4) and is threadedly connected to the inner core (21).
4. The high-tensile column tie rod structure for hydraulic devices according to claim 2, characterized in that, The fixing component (3) also includes a connecting pipe (33) and a cover plate (34). The outer surfaces of the upper nut (32) and the lower nut (31) are both fitted with the same connecting pipe (33). The end face of the connecting pipe (33) away from the frame (1) and the end face of the upper nut (32) away from the frame (1) are both fixedly connected to the same cover plate (34) by bolts (35).
5. The high-tensile column tie rod structure for hydraulic devices according to claim 4, characterized in that, The outer surfaces of the upper nut (32) and the lower nut (31) are respectively a first inclined surface (61) and a second inclined surface (62) that are inclined outward toward the frame (1). The inner surface of the connecting pipe (33) is a third inclined surface (7) that is parallel to the first inclined surface (61) and the second inclined surface (62).
6. The high-tensile column tie rod structure for hydraulic devices according to claim 4, characterized in that, The connecting pipe (33) has an annular groove (8) on its outer peripheral wall.
7. The high-tensile column tie rod structure for hydraulic devices according to claim 4, characterized in that, The end face of the connecting pipe (33) that is away from the frame (1) extends beyond the end face of the upper nut (32) that is away from the frame (1). A pad is connected between the end face of the upper nut (32) that is away from the frame (1) and the cover plate (34). The bolt (35) passes through the cover plate (34) and the pad and is threadedly connected to the upper nut (32).
8. The high-tensile-force column tie rod structure for hydraulic devices according to claim 1, characterized in that, It also includes a support pipe (11), a cylinder fixing plate (12) and a lower beam plate (13), with pads provided between the upper end of the support pipe (11) and the cylinder fixing plate (12) and between the lower end of the support pipe (11) and the lower beam plate (13).