CN113275905B - Hydraulic unloading structure for upright column of large-scale processing machine tool - Google Patents
Hydraulic unloading structure for upright column of large-scale processing machine tool Download PDFInfo
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- CN113275905B CN113275905B CN202110843180.XA CN202110843180A CN113275905B CN 113275905 B CN113275905 B CN 113275905B CN 202110843180 A CN202110843180 A CN 202110843180A CN 113275905 B CN113275905 B CN 113275905B
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- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 24
- 230000006872 improvement Effects 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
Abstract
The invention provides a hydraulic unloading structure for a stand column of a large processing machine tool, which comprises a machine tool body, wherein a guide rail is arranged on the machine tool body, the guide rail is connected with the stand column in a sliding manner, a plurality of oil cavities and oil inlet holes communicated with the oil cavities are formed in the contact surface of the stand column and the machine tool body, a sealing ring surrounding the oil cavities for a circle is arranged on the inner side wall of the oil cavities, a shell is also arranged on the stand column, at least two roller supports driven by a hydraulic cylinder to lift are connected to the shell in a sliding manner, rollers are rotatably connected to the roller supports, and a bearing plate corresponding to the rollers is arranged on the machine tool body. Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the pressure of the upright column to the guide rail is reduced, the abrasion speed of the guide rail is reduced, the precision of the guide rail is improved, and the service life of the guide rail is prolonged.
Description
Technical Field
The invention relates to the technical field of machine tool unloading.
In particular to a hydraulic unloading structure of a column of a large processing machine tool.
Background
The existing machine tool comprises a machine tool body, wherein a guide rail is arranged on the machine tool body, a stand column is connected onto the guide rail in a sliding mode, a cutter shaft box and other structures are installed on the stand column, and when the machine tool is used, the stand column moves along the guide rail.
The above technical solution has the following disadvantages: the stand weight itself is great, installs bearing box isotructure simultaneously on the stand, especially to large-scale machine tool, and the total weight of its stand can reach 3 to 5 tons, consequently, the stand is very big to the pressure of guide rail, leads to the frictional force between stand and the guide rail great, when the stand low-speed motion, can produce the phenomenon of crawling, and the contact surface wearing and tearing speed of guide rail and stand and guide rail is fast, has reduced the precision and the life of guide rail.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provide the hydraulic unloading structure of the upright post of the large-scale processing machine tool, so that the pressure of the upright post on the guide rail is reduced, the abrasion speed of the guide rail is reduced, the precision of the guide rail is improved, and the service life of the guide rail is prolonged.
The aim of the invention is achieved by the following technical measures: the utility model provides a large-scale machine tool stand hydraulic pressure off-load structure, includes the lathe bed, be equipped with the guide rail on the lathe bed, sliding connection has the stand on the guide rail, set up a plurality of oil pockets on the contact surface of stand and lathe bed and the inlet port that is linked together with the oil pocket, be equipped with the sealing washer around oil pocket a week on the oil pocket inside wall, still be equipped with the shell on the stand, sliding connection has two at least gyro wheel supports by hydraulic cylinder drive lift on the shell, it is connected with the gyro wheel to rotate on the gyro wheel support, be equipped with the carrier plate corresponding with the gyro wheel on the lathe bed.
As an improvement: the lower side of the shell is provided with a containing groove for containing the roller wheel support, the hydraulic cylinder is positioned on the upper portion of the shell, and a mandril of the hydraulic cylinder extends into the containing groove and then is connected with the roller wheel support.
As an improvement: the utility model discloses a screw rod, including roof, shell, screw rod through hole, stand threaded connection, the top of the shell is equipped with the roof, the preceding, the back both ends of roof are connected with the shell after buckling downwards, the equipment chamber has between roof and the shell, the screw rod through hole has been seted up on the roof, the screw rod pass behind the screw rod through hole with stand threaded connection, the screw rod lower extreme is equipped with the nut that can offset with the roof, roof upper portion is equipped with and is criss-cross location arch, set up on the stand with the protruding matched with constant head tank in location.
As an improvement: be equipped with the extension on shell or the roof, extension one end is located shell side, the one end rotation that the extension lies in shell side is connected with the operation axis, the operation axis can cooperate with the spanner, be equipped with a plurality of operation axle sprocket on the operation axis, be equipped with a plurality of nut sprocket on the nut, the winding has the chain between operation axis and the nut, the direction of height motion of chain can be followed to the nut sprocket, set up the chain guide way that is used for restricting the chain along its direction of height motion on the extension.
As an improvement: one end of the extension part is rotatably connected with the shell or the top plate, the rotating axis of the extension part is overlapped with that of the screw rod, and the extension part is provided with a fixing device which is used for enabling the screw cap to rotate along with the extension part.
As an improvement: the nut upper portion is equipped with a plurality of nut ratchets, fixing device includes with the articulated left pendulum rod of extension and right pendulum rod, be equipped with on the pendulum rod of a left side can with the corresponding left pendulum rod ratchet of nut ratchet, be equipped with left spring between pendulum rod of a left side and the extension, be equipped with on the pendulum rod of the right side can with the corresponding right pendulum rod ratchet of nut ratchet, be equipped with right spring between pendulum rod of the right side and the extension, it is connected with the pivot that is located between pendulum rod of a left side and the right pendulum rod to rotate in the extension, be equipped with the cam that can stir left pendulum rod or right pendulum rod in the pivot, the one end that the extension was stretched out in the pivot is equipped with the driving lever.
As an improvement: the improved lifting device is characterized in that a push rod sliding groove is formed in the extending portion, one end, extending out of the extending portion, of the rotating shaft is located in the push rod sliding groove, a left push rod and a right push rod are connected in the push rod sliding groove in a sliding mode, the end portion of the left push rod is close to one side of the rotating shaft in an inclined mode, the end portion of the right push rod is close to one side of the rotating shaft in an inclined mode, and a ball head which can be in contact with one side, close to the rotating shaft, of the end portion of the left push rod or the end portion of the right push rod is arranged on the lifting lever.
As an improvement: the chain guide groove is positioned in the extension part, a nut through hole for accommodating a nut to move is formed in the upper part of the extension part, an upper circular ring is arranged on the upper part of the edge of the nut through hole, an upper circular groove is correspondingly formed in the lower part of the top plate, the upper circular ring is positioned in the upper circular groove, and an upper bearing is arranged between the upper circular ring and the side wall of the upper circular groove; the lower part of the extension part is provided with a lower circular ring coaxial with the upper circular ring, the upper part of the shell is correspondingly provided with a lower circular groove, and the lower circular ring is positioned in the lower circular groove and a lower bearing is arranged between the lower circular ring and the side wall of the lower circular groove.
As an improvement: one end of the extending part, which is positioned at the side of the shell, is provided with a crowbar jack.
As an improvement: the guide rail corresponds to the middle part of the stand column, the number of the shells on each stand column is four, and the four shells correspond to four corners of the stand column one by one.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the pressure of the upright column to the guide rail is reduced, the abrasion speed of the guide rail is reduced, the precision of the guide rail is improved, and the service life of the guide rail is prolonged.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic unloading structure of a column of a large processing machine tool.
FIG. 2 is a schematic structural view of section A-A in FIG. 1.
Fig. 3 is a schematic structural view of section B-B in fig. 2.
FIG. 4 is a schematic side structure diagram of a hydraulic unloading structure of a column of a large processing machine tool.
Fig. 5 is a schematic structural view of a portion C in fig. 4.
Fig. 6 is a schematic view of the structure of section D-D in fig. 5.
Fig. 7 is a schematic structural view of a portion E in fig. 5.
Fig. 8 is a schematic structural view of section F-F in fig. 7.
Fig. 9 is a schematic structural view of section G-G in fig. 7.
Fig. 10 is a schematic structural view of section H-H in fig. 7.
FIG. 11 is a schematic view of section I-I of FIG. 7.
FIG. 12 is a schematic view of the structure of section J-J in FIG. 7.
FIG. 13 is a schematic view of the structure of section K-K in FIG. 7.
Fig. 14 is a schematic structural view of a use state of a part E in fig. 5.
In the figure: 1-a lathe bed; 2-a carrier plate; 3-a guide rail; 4-upright post; 5-a housing; 6-positioning a groove; 7-an oil chamber; 8-sealing ring; 9-oil inlet hole; 10-a roller; 11-positioning protrusions; 12-a top plate; 13-a device cavity; 14-a hydraulic cylinder; 15-accommodating the tank; 16-a roller support; 17-a screw; 18-a threaded hole; 19-screw through hole; 20-an upper bearing; 21-upper circular groove; 22-a rotating drum; 23-chain guide groove; 24-a screw cap; 25-nut ratchet; 26-nut sprocket; 27-lower circular groove; 28-lower bearing; 29-left swing link; 30-left push rod; 31-left push button; 32-wrench groove; 33-an operating shaft; 34-an extension; 35-crowbar jack; 36-operating axle sprocket; 37-a chain; 38-right swing link ratchet; 39-nut through hole; 40-upper circular ring; 41-lower circular ring; 42-a rotating shaft; 43-a driving lever; 44-ball head; 45-right push rod; 46-right push button; 47-push rod chute; 48-a cam; 49-right swing link; 50-left spring; 51-right spring; 52-left swing link ratchet.
Detailed Description
Example (b): as shown in the accompanying drawings 1 to 14, the hydraulic unloading structure for the column of the large processing machine tool comprises a machine tool body 1, wherein a guide rail 3 is arranged on the machine tool body 1, a column 4 is connected onto the guide rail 3 in a sliding manner, a plurality of oil cavities 7 and oil inlets 9 communicated with the oil cavities 7 are formed in the contact surface of the column 4 and the machine tool body 1, and the oil inlets 9 are connected with a first oil pump. Be equipped with the sealing washer 8 around oil pocket 7 a week on the inside wall of oil pocket 7, it is preferred, sealing washer 8 adopts the rubber material to make, avoids the hydraulic oil in the oil pocket 7 to ooze. During the use, first oil pump injects hydraulic oil to oil pocket 7 through inlet port 9, the hydraulic oil in the oil pocket 7 exerts ascending power to stand 4, reduces stand 4 to the pressure of guide rail 3, reduces the wearing and tearing speed of guide rail 3, improves the precision and the life of guide rail 3. Still be equipped with shell 5 on the stand 4, sliding connection has two at least gyro wheel supports 16 that are gone up and down by the 14 drive of pneumatic cylinder on shell 5, and is concrete, the holding tank 15 that holds gyro wheel support 16 activity is seted up to shell 5 downside, pneumatic cylinder 14 is located shell 5 upper portion, the ejector pin of pneumatic cylinder 14 is connected with gyro wheel support 16 after stretching into holding tank 15. The roller bracket 16 moves up and down in the accommodating groove 15, and the roller bracket 16 is reliable in action. The hydraulic cylinder 14 is connected with a second oil pump, the roller bracket 16 is rotatably connected with a roller 10, and the lathe bed 1 is provided with a bearing plate 2 corresponding to the roller 10. The guide rail 3 is corresponding with the middle part of stand 4, and a plurality of oil pockets 7 equipartition are in guide rail 3 both sides, and every stand 4 goes up the quantity of shell 5 and is four, four shells 5 and four angle one-to-one of stand 4, and is concrete, four angles of stand 4 have all been seted up sunkenly, shell 5 is located sunken. When the oil chamber 7 and the hydraulic cylinder 14 are used, the force applied to the upright post 4 is balanced, and the stable movement of the upright post 4 is facilitated.
During the use, the second oil pump supplies oil to pneumatic cylinder 14, roller bracket 16 descends, applies ascending power to stand 4, reduces stand 4 to guide rail 3's pressure, and simultaneously, install pressure sensor in the pneumatic cylinder 14, when the upper surface unevenness of carrier plate 2 arouses roller bracket 16 upper and lower during the motion, corresponding change can take place for the oil pressure in the pneumatic cylinder 14, leads to the power of applying force to stand 4 to change, the change of oil pressure in every pneumatic cylinder 14 of record in the stand 4 motion process, corresponding injection or the hydraulic oil in the release pneumatic cylinder 14 reduce the fluctuation range of applying force to stand 4, stand 4 is more stable to guide rail 3's pressure, guide rail 3's wearing and tearing are more even, improve guide rail 3's precision and life.
The top of the shell 5 is provided with a top plate 12, the front end and the rear end of the top plate 12 are bent downwards and then connected with the shell 5, an equipment cavity 13 is arranged between the top plate 12 and the shell 5, and the left side and the right side of the equipment cavity 13 are both opened. Screw rod via hole 19 has been seted up on roof 12, threaded hole 18 has been seted up on stand 4, screw rod 17 passes behind screw rod via hole 19 and stand 4 threaded connection, screw rod 17 lower extreme is equipped with the nut 24 that can offset with roof 12, roof 12 upper portion is equipped with and is the protruding 11 of criss-cross location, set up on the stand 4 with the protruding 11 matched with constant head tank 6 in location. When the housing 5 is installed, firstly, the hydraulic cylinder 14 is controlled to retract the roller bracket 16 into the accommodating groove 15 so as to reduce the heights of the top plate 12 and the positioning protrusion 11, then the housing 5 is placed at the bottom of the upright post 4, and finally, the hydraulic cylinder 14 is controlled to extend the roller bracket 16 out of the accommodating groove 15 so as to increase the heights of the top plate 12 and the positioning protrusion 11, so that the positioning protrusion 11 is clamped into the positioning groove 6, and the screw cap 24 and the screw 17 are screwed. The positioning protrusion 11 is matched with the positioning groove 6 to realize positioning in the front, back, left and right directions, and the screw cap 24 and the screw rod 17 realize positioning in the up and down directions.
The wrench is characterized in that a protruding portion 34 is arranged on the housing 5 or the top plate 12, one end of the protruding portion 34 is located on the side of the housing 5, one end of the protruding portion 34 located on the side of the housing 5 is rotatably connected with an operating shaft 33, the operating shaft 33 can be matched with a wrench, and specifically, a wrench groove 32, for example, a hexagonal hole matched with an inner hexagonal wrench, is formed in the upper end of the operating shaft 33. Be equipped with a plurality of operation axle sprocket 36 on the operation axle 33, be equipped with a plurality of nut sprocket 26 on the nut 24, the winding has chain 37 between operation axle 33 and the nut 24, the direction of height motion of chain 37 can be followed to nut sprocket 26, promptly, nut sprocket 26 highly is less than chain 37's height, offer the chain guide way 23 that is used for restricting chain 37 along its direction of height motion on the extension 34, it is concrete, the upper side wall contact of chain 37 upper portion and chain guide way 23, the lower side wall contact of chain 37 lower part and chain guide way 23, scribble lubricating grease between chain 37 and the chain guide way 23 lateral wall. Because the nut 24 is located equipment chamber 13, equipment such as pneumatic cylinder 14 is installed simultaneously in equipment chamber 13, and operating space is little, and the turned angle of spanner is limited, and the complex operation of rotating nut 24, screw rod 17. When the nut 24 and the screw 17 need to be rotated, the wrench further drives the nut 24 and the screw 17 to rotate by rotating the operating shaft 33 positioned outside the equipment cavity 13, and along with the rotation of the nut 24 and the screw 17, the nut 24 moves up and down correspondingly, and the chain 37 does not move up and down, so that the nut 24 is controlled by the operating shaft 33.
The protruding portion 34 has a rotating cylinder 22 at one end, the rotating cylinder 22 is rotatably connected with the housing 5 or the top plate 12, the rotation axis of the rotating cylinder 22 is overlapped with the rotation axis of the screw 17, and the protruding portion 34 is provided with a fixing device for enabling the screw cap 24 to rotate along with the protruding portion 34. When the nut 24 and the screw 17 are over tightened, the fixing device is operated to fix the protrusion 34 and the nut 24 together, and then the protrusion 34 is rotated to loosen the nut 24 and the screw 17. Preferably, one end of the extension portion 34 located at the side of the housing 5 is provided with a crowbar insertion hole 35. When necessary, a crowbar is inserted into the crowbar inserting hole 35, so that the length of the force arm is increased, and the working efficiency is improved.
Preferably, the chain guide groove 23 is located inside the protruding portion 34, a nut through hole 39 for accommodating the movement of the nut 24 is formed in the upper portion of the rotary drum 22, an upper circular ring 40 is arranged on the upper portion of the edge of the nut through hole 39, an upper circular groove 21 is correspondingly formed in the lower portion of the top plate 12, the upper circular ring 40 is located in the upper circular groove 21, and an upper bearing 20 is arranged between the upper circular ring 40 and the side wall of the upper circular groove 21; the lower part of the rotating drum 22 is provided with a lower circular ring 41 which is coaxial with the upper circular ring 40, the upper part of the shell 5 is correspondingly provided with a lower circular groove 27, the lower circular ring 41 is positioned in the lower circular groove 27, and a lower bearing 28 is arranged between the lower circular ring 41 and the side wall of the lower circular groove 27. The extension portion 34 is stable in rotation, and the position accuracy of the rotation axis is high.
The upper part of the nut 24 is provided with a plurality of nut ratchets 25, the fixing device comprises a left swing rod 29 and a right swing rod 49 which are hinged with the extension part 34, and the left swing rod 29 and the right swing rod 49 are obliquely arranged. The left swing rod 29 is provided with a left swing rod ratchet 52 corresponding to the nut ratchet 25, a left spring 50 is arranged between the left swing rod 29 and the extension part 34, the right swing rod 49 is provided with a right swing rod ratchet 38 corresponding to the nut ratchet 25, a right spring 51 is arranged between the right swing rod 49 and the extension part 34, the extension part 34 is rotatably connected with a rotating shaft 42 positioned between the left swing rod 29 and the right swing rod 49, the rotating shaft 42 is provided with a cam 48 capable of shifting the left swing rod 29 or the right swing rod 49, and one end of the rotating shaft 42 extending out of the extension part 34 is provided with a shifting lever 43. When the screw cap 24 needs to be rotated anticlockwise, the deflector rod 43 is pulled, the cam 48 is enabled to pull the left oscillating bar 29, the left oscillating bar ratchet 52 is separated from the screw cap ratchet 25, the right oscillating bar ratchet 38 is meshed with the screw cap ratchet 25, at the moment, the extension part 34 is rotated anticlockwise, the right oscillating bar 49 pushes the screw cap 24 to rotate, the extension part 34 is rotated clockwise, the screw cap ratchet 25 pushes the right oscillating bar 49 away, and the screw cap 24 does not rotate along with the extension part 34; when the screw cap 24 needs to be rotated clockwise, the driving lever 43 is shifted, the cam 48 drives the right swing rod 49, the right swing rod ratchet 38 is separated from the screw cap ratchet 25, the left swing rod ratchet 52 is meshed with the screw cap ratchet 25, at the moment, the protrusion 34 is rotated clockwise, the screw cap 24 is pushed to rotate by the left swing rod 42, the protrusion 34 is rotated anticlockwise, the screw cap ratchet 25 pushes the left swing rod 42 away, and the screw cap 24 does not rotate along with the protrusion 34.
Preferably, a push rod sliding groove 47 is formed in the extending portion 34, one end of the rotating shaft 42 extending out of the extending portion 34 is located in the push rod sliding groove 47, a left push rod 30 and a right push rod 45 are connected in the push rod sliding groove 47 in a sliding mode, a left push button 31 is arranged on the left push rod 30, and a right push button 46 is arranged on the right push rod 45. The end part of the left push rod 30 is obliquely arranged at one side close to the rotating shaft 42, the end part of the right push rod 45 is obliquely arranged at one side close to the rotating shaft 42, and the poking rod 43 is provided with a ball head 44 which can be contacted with one side of the end part of the left push rod 30 or the right push rod 45 close to the rotating shaft 42. When the screw cap 24 needs to be rotated anticlockwise, the right push rod 45 is pushed forwards, the inclined position at the front end of the right push rod 45 pushes the ball head 44 to move leftwards, and then the cam 48 is driven to stir the left oscillating bar 29; when the nut 24 needs to be rotated clockwise, the left push rod 30 is pushed forward, the inclined part at the front end of the left push rod 30 pushes the ball head 44 to move rightwards, and then the cam 48 is driven to shift the right swing rod 49.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The utility model provides a large-scale machine tool stand hydraulic pressure off-load structure, includes lathe bed (1), be equipped with guide rail (3) on lathe bed (1), sliding connection has stand (4), its characterized in that on guide rail (3): a plurality of oil cavities (7) and oil inlet holes (9) communicated with the oil cavities (7) are formed in the contact surface of the stand column (4) and the lathe bed (1), a sealing ring (8) surrounding the oil cavities (7) for a circle is arranged on the inner side wall of each oil cavity (7), a shell (5) is further arranged on the stand column (4), at least two roller supports (16) driven to lift by a hydraulic cylinder (14) are connected onto the shell (5) in a sliding mode, rollers (10) are connected onto the roller supports (16) in a rotating mode, and bearing plates (2) corresponding to the rollers (10) are arranged on the lathe bed (1);
a top plate (12) is arranged above the shell (5), the front end and the rear end of the top plate (12) are bent downwards and then connected with the shell (5), an equipment cavity (13) is arranged between the top plate (12) and the shell (5), a screw rod through hole (19) is formed in the top plate (12), a screw rod (17) penetrates through the screw rod through hole (19) and then is in threaded connection with the upright post (4), a nut cap (24) capable of abutting against the top plate (12) is arranged at the lower end of the screw rod (17), a cross-shaped positioning bulge (11) is arranged at the upper part of the top plate (12), and a positioning groove (6) matched with the positioning bulge (11) is formed in the upright post (4);
be equipped with extension (34) on shell (5) or roof (12), extension (34) one end is located shell (5) side, the one end that extension (34) are located shell (5) side rotates and is connected with operation axle (33), operation axle (33) can cooperate with the spanner, be equipped with a plurality of operation axle sprocket (36) on operation axle (33), be equipped with a plurality of nut sprocket (26) on nut (24), the winding has chain (37) between operation axle (33) and nut (24), the direction of height motion of chain (37) can be followed in nut sprocket (26), offer chain guide way (23) that are used for restricting chain (37) along its direction of height motion on extension (34).
2. The hydraulic unloading structure of the column of the large processing machine tool according to claim 1, characterized in that: the lower side of the outer shell (5) is provided with an accommodating groove (15) for accommodating the movement of the roller support (16), the hydraulic cylinder (14) is positioned at the upper part of the outer shell (5), and a mandril of the hydraulic cylinder (14) extends into the accommodating groove (15) and then is connected with the roller support (16).
3. The hydraulic unloading structure of the column of the large processing machine tool according to claim 1, characterized in that: one end of the extension part (34) is rotationally connected with the shell (5) or the top plate (12), the rotating axis of the extension part (34) is overlapped with the rotating axis of the screw rod (17), and a fixing device used for enabling the screw cap (24) to rotate along with the extension part (34) is arranged on the extension part (34).
4. The hydraulic unloading structure of the column of the large processing machine tool according to claim 3, characterized in that: a plurality of nut ratchets (25) are arranged at the upper part of the nut (24), the fixing device comprises a left swing rod (29) and a right swing rod (49) which are hinged with the extension part (34), a left swing rod ratchet (52) which can correspond to the nut ratchet (25) is arranged on the left swing rod (29), a left spring (50) is arranged between the left swing rod (29) and the extension part (34), a right swing rod ratchet (38) which can correspond to the screw cap ratchet (25) is arranged on the right swing rod (49), a right spring (51) is arranged between the right swing rod (49) and the extension part (34), the extending part (34) is rotatably connected with a rotating shaft (42) positioned between the left swing rod (29) and the right swing rod (49), a cam (48) capable of shifting the left swing link (29) or the right swing link (49) is arranged on the rotating shaft (42), and a driving lever (43) is arranged at one end of the rotating shaft (42) extending out of the extension part (34).
5. The hydraulic unloading structure of the column of the large processing machine tool according to claim 4, characterized in that: the utility model discloses a novel extension portion, including extension portion (34), pivot (42) have been seted up on extension portion (34) push rod spout (47), the one end that extension portion (34) are stretched out in pivot (42) is located push rod spout (47), and sliding connection has left push rod (30) and right push rod (45) in push rod spout (47), the one side slope that left side push rod (30) tip is close to pivot (42) sets up, the one side slope that right push rod (45) tip is close to pivot (42) sets up, be equipped with bulb (44) that can contact with one side that left push rod (30) or right push rod (45) tip are close to pivot (42) on driving lever (43).
6. The hydraulic unloading structure of the column of the large processing machine tool according to claim 3, characterized in that: the chain guide groove (23) is positioned in the extension part (34), a nut through hole (39) used for accommodating a nut (24) to move is formed in the upper part of the extension part (34), an upper circular ring (40) is arranged on the upper part of the edge of the nut through hole (39), an upper circular groove (21) is correspondingly formed in the lower part of the top plate (12), the upper circular ring (40) is positioned in the upper circular groove (21), and an upper bearing (20) is arranged between the upper circular ring (40) and the side wall of the upper circular groove (21); the lower part of the extension part (34) is provided with a lower circular ring (41) coaxial with the upper circular ring (40), the upper part of the shell (5) is correspondingly provided with a lower circular groove (27), the lower circular ring (41) is positioned in the lower circular groove (27), and a lower bearing (28) is arranged between the lower circular ring (41) and the side wall of the lower circular groove (27).
7. The hydraulic unloading structure of the column of the large processing machine tool according to claim 3, characterized in that: one end of the extending part (34) which is positioned at the side of the shell (5) is provided with a crowbar jack (35).
8. The hydraulic unloading structure of the column of the large processing machine tool according to any one of claims 1 to 2, characterized in that: the guide rail (3) corresponds to the middle part of the upright post (4), the number of the shells (5) on each upright post (4) is four, and the four shells (5) correspond to four corners of the upright post (4) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843180.XA CN113275905B (en) | 2021-07-26 | 2021-07-26 | Hydraulic unloading structure for upright column of large-scale processing machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843180.XA CN113275905B (en) | 2021-07-26 | 2021-07-26 | Hydraulic unloading structure for upright column of large-scale processing machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113275905A CN113275905A (en) | 2021-08-20 |
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| CN113275905A (en) | 2021-08-20 |
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