CN118088559B - Rotary hydraulic transmission device for ship retraction system - Google Patents
Rotary hydraulic transmission device for ship retraction system Download PDFInfo
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- CN118088559B CN118088559B CN202410496541.1A CN202410496541A CN118088559B CN 118088559 B CN118088559 B CN 118088559B CN 202410496541 A CN202410496541 A CN 202410496541A CN 118088559 B CN118088559 B CN 118088559B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 230000000694 effects Effects 0.000 claims abstract description 26
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims description 43
- 239000010720 hydraulic oil Substances 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 20
- 238000013461 design Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
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Abstract
A rotary hydraulic transmission device for a ship retraction system belongs to the technical field of ship mechanical equipment. In order to solve the problem that in the existing rotary hydraulic transmission, the sealing element is worn due to long-term use, and the sealing effect is affected. The invention comprises an inner shaft and N rotary hydraulic transmission units sleeved on the inner shaft along the axial direction of the inner shaft; the rotary hydraulic transmission unit comprises an annular sleeve and a group of rotary sealing assemblies, wherein the annular sleeve is coaxially sleeved on the inner shaft and is in rotary connection with the inner shaft through the rotary sealing assemblies; an annular hydraulic cavity is formed between the annular sleeve and the inner shaft, and each annular hydraulic cavity is communicated with a conveying interface; the inner shaft is provided with N hydraulic conveying channels along the axial direction, each hydraulic conveying channel is arranged corresponding to one annular hydraulic cavity, one end of each hydraulic conveying channel is communicated with the annular hydraulic cavity, and the other end of each hydraulic conveying channel is converged with the other hydraulic conveying channels. The invention is mainly used for rotary hydraulic transmission of the ship retraction system.
Description
Technical Field
The invention belongs to the technical field of ship mechanical equipment, and particularly relates to a rotary hydraulic transmission device for a ship retraction system.
Background
In the marine retraction system, efficient rotary hydraulic transmission is required between each stage of working arms, and therefore, a rotary hydraulic transmission device is required to be designed between the connecting ends of two adjacent working arms.
At present, a traditional rotary hydraulic transmission device has a rotary design, and meanwhile, an annular cavity is arranged at the joint of two working arms and is used for conveying hydraulic oil; in order to avoid oil leakage, a sealing structure is arranged in the annular cavity for providing rotary sealing. For example, "a rotary hydraulic transmission device for a ship retraction system" disclosed in bulletin number "CN206409674U" specifically discloses a double-threaded rod and a sleeve, one end of the double-threaded rod is provided with a flange disc-shaped end, a plurality of first oil inlets and first oil return openings with the same number are uniformly arranged on the end along the circumferential direction, the first oil inlets and the first oil return openings are communicated with oil paths extending to the double-threaded rod in a one-to-one correspondence manner, annular oil grooves with the same number as the oil paths are also arranged on the surface of the double-threaded rod in parallel along the circumferential direction, second oil return openings with the same number as the first oil inlets are arranged on the sleeve, and second oil inlets with the same number as the first oil return openings are communicated with the first oil inlets through the oil grooves and the oil paths, and the second oil inlets are communicated with the first oil inlets through the oil grooves and the oil paths. Sealing devices are also arranged between the oil tanks. According to the scheme, through the rotary hydraulic transmission device formed by the double threaded rods and the sleeves, the hydraulic oil way can be communicated between all levels of working arms of the retraction system without using hoses, and the problem that the hydraulic oil way on all levels of working arms cannot be connected by using hard pipes is solved.
However, after the rotary sealing structure in the scheme is used for a long time, the sealing element is subjected to rotary friction for a long time to easily cause abrasion, so that the overall tightness of the rotary hydraulic transmission device is affected, and the problem of hydraulic oil leakage is further caused.
Disclosure of Invention
The invention aims to solve the problems that in the existing rotary hydraulic transmission device, a sealing element is easy to wear due to long-term use, the sealing effect is affected, and hydraulic oil is leaked, and further provides the rotary hydraulic transmission device for a ship retraction system.
The invention adopts the technical scheme for solving the technical problems that:
a rotary hydraulic transmission device for a ship retraction system comprises an inner shaft and N rotary hydraulic transmission units sleeved on the inner shaft along the axial direction of the inner shaft;
Each rotary hydraulic transmission unit comprises an annular sleeve and a group of rotary sealing assemblies, wherein the annular sleeve is coaxially sleeved on the inner shaft and is in rotary connection with the outer circumferential wall of the inner shaft through the rotary sealing assemblies; a sealed annular hydraulic cavity is formed between the annular sleeve and the outer circumferential wall of the inner shaft, and each annular hydraulic cavity is communicated with a conveying interface;
The inner shaft is provided with N hydraulic conveying channels along the axial direction, each hydraulic conveying channel is correspondingly arranged with one annular hydraulic cavity, one end of the hydraulic conveying channel is communicated with the annular hydraulic cavity 3, and the other end is converged with the residual liquid pressure conveying channel and is communicated with the hydraulic oil main conveying pipeline;
The rotary sealing assembly comprises two annular connecting sheets coaxially and symmetrically sleeved on the inner shaft, two sealing rings and two inner ring elastic sheets symmetrically arranged on the annular sleeve along the axial direction of the annular sleeve; each inner ring elastic sheet is arranged corresponding to one annular connecting sheet; each sealing ring is arranged between the inner ring elastic sheet and the annular connecting sheet and is extruded, so that the sealing effect is realized.
Preferably, the outer ring of each annular connecting piece and the outer ring of the inner ring elastic piece extend outwards in the radial direction, and the sealing ring is arranged on one side close to the extending end.
Preferably, the extending ends of the two annular connecting sheets are inwards closed and form a boss with a trapezoid cross section; the inner ring elastic sheet is formed by bending inner ring edges at two axial sides of the annular sleeve inwards and is respectively positioned at two sides of the two annular connecting sheets to form a clamping shape.
Preferably, each group of rotary sealing assembly further comprises a plurality of clamping units, and the plurality of clamping units are arranged in an annular array and clamped on the inner ring elastic sheet; each clamping unit comprises two clamping jaws and a clamping jaw connecting part, and the two clamping jaws are symmetrically arranged on the clamping jaw connecting part; the two clamping jaws are clamped on the extending ends of the two inner ring spring plates and have clamping force.
Preferably, the clamping jaw connecting portion comprises a double-thread screw rod rotationally connected to the inner walls of the two sides of the annular sleeve and two first guide posts respectively fixedly connected to the inner walls of the two sides, a threaded hole is formed in one end of each clamping jaw, a through hole is formed in the middle of each clamping jaw, the two clamping jaws are respectively sleeved on the two first guide posts through the corresponding through holes, and the two clamping jaws are respectively connected to two sections of thread sections of the double-thread screw rod through the corresponding threaded holes in a threaded mode.
Preferably, a brake component is further arranged on the double-threaded screw rod to prevent the double-threaded screw rod from rotating reversely.
Preferably, an inner gear ring is coaxially and rotatably arranged in the annular sleeve, a gear is sleeved on each double-threaded screw rod, and the inner gear ring is meshed with the gears to realize synchronous driving of a plurality of clamping units.
Preferably, the annular sleeve is sleeved with a permanent magnet ring, and the permanent magnet ring is rotationally connected with the annular sleeve; the permanent magnet ring is magnetically connected with the inner gear ring.
Preferably, each group of rotary sealing assembly further comprises a plurality of internal supporting units which are circumferentially and uniformly arranged between the two annular connecting sheets, and each internal supporting unit is arranged corresponding to one clamping unit and can synchronously rotate along with the circumferential rotation of the clamping unit; the internal supporting unit comprises a trapezoid extrusion block and a linear driver; the linear driver and the trapezoid extrusion block form a screw nut pair;
The linear driver comprises a screw rod, a second guide post, a first bevel gear and a second bevel gear, one end of the screw rod is arranged on the inner shaft and rotates around the inner shaft, the other end of the screw rod extends along the radial direction of the inner shaft, and the trapezoid extrusion block is in threaded connection with the screw rod; one end of the second guide post is connected to the inner shaft and rotates around the inner shaft; the other end extends along the radial direction of the inner shaft and is inserted into the trapezoid extrusion block, and the second guide column is in clearance fit with the trapezoid extrusion block; the first bevel gear is sleeved on the double-threaded screw rod, and the second bevel gear is sleeved at one end of the screw rod, which is far away from the inner shaft, and is meshed with the first bevel gear.
Preferably, a plurality of balls protruding out of the outer wall of the trapezoid extrusion block are arranged on the outer wall of the trapezoid extrusion block along the circumferential direction.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the application, the rotary sealing assembly capable of adjusting the sealing performance is arranged between the inner shaft and the annular sleeve, and after long-term use, the rotary sealing assembly is worn, and the clamping force is increased, so that the sealing effect can be ensured, the influence of the wear on the sealing performance is avoided, and the integral use effect is improved.
2. According to the application, the clamping force of the two clamping jaws can be adjusted through the arrangement of the double-threaded screw, and meanwhile, the movement of all the clamping units can be synchronously driven through the design of the inner gear ring and the gear, so that the efficiency is prevented from being low due to independent adjustment; in addition, the internal gear ring is driven by the rotation of the permanent magnet ring arranged outside the annular sleeve, and a transmission shaft or other auxiliary components are not required to be installed on the annular sleeve for transmission by punching or slotting, so that the sealing effect of the annular hydraulic cavity is ensured. Furthermore, when the clamping unit runs under the drive of the double-threaded screw, the internal supporting unit is also driven by the driving force, so that the setting of the driving device is reduced, and the sealing effect is better improved.
Drawings
The accompanying drawings are included to provide a further understanding of the application.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the hydraulic transmission channel on the inner shaft.
Fig. 3 is a schematic view of the structure of the inside of the annular sleeve of the present invention.
Fig. 4 is an enlarged partial schematic view at a in fig. 3.
Fig. 5 is a schematic structural view of the clamping unit.
Fig. 6 is a schematic structural view of the internal support unit.
Fig. 7 is a schematic structural diagram of the inner gear ring and the plurality of gears.
Fig. 8 is a schematic cross-sectional view of the annular sleeve.
Fig. 9 is a schematic structural view of a plurality of clamping units distributed.
FIG. 10 is a schematic structural view of a ratchet brake assembly.
Reference numerals illustrate: 1-an inner shaft; 1-1-a hydraulic delivery channel; 2-an annular sleeve; 2-1-annular grooves; 2-2-outer ring grooves; 3-an annular hydraulic chamber; 3-1-a delivery interface; 4-annular connecting sheets; 5-a sealing ring; 6-an inner ring spring plate; 7-fitting the inner ring; 8-clamping jaws; 9-jaw connection; 9-1-double-flighted screw; 9-2-a first guide post; 10-ratchet wheel; 11-pawl; 12-an inner gear ring; 13-gear; 14-an annular plugboard; 15-permanent magnet rings; 16-trapezoid extrusion blocks; 17-linear drive; 17-1-screw rod; 17-2-second guide post; 17-3-first bevel gear; 17-4-second bevel gear; 18-rotating a ring; 20-mounting frame.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
Referring to fig. 1, an embodiment of the present application provides a rotary hydraulic transmission device for a marine vessel retraction system, including an inner shaft 1 and N rotary hydraulic transmission units fitted over the inner shaft 1 in an axial direction of the inner shaft 1;
Each rotary hydraulic transmission unit comprises an annular sleeve 2 and a group of rotary sealing assemblies, wherein the annular sleeve 2 is coaxially sleeved on the inner shaft 1, and rotary connection is formed between the rotary sealing assemblies and the outer circumferential wall of the inner shaft 1; a sealed annular hydraulic cavity 3 is formed between the annular sleeve 2 and the outer circumferential wall of the inner shaft 1, and each annular hydraulic cavity 3 is communicated with a conveying interface 3-1, and the number of the rotary hydraulic transmission units is N, so that the rotary hydraulic transmission units are provided with N annular hydraulic cavities 3;
The inner shaft 1 is provided with N hydraulic conveying channels 1-1 along the axial direction, each hydraulic conveying channel 1-1 is correspondingly arranged with an annular hydraulic cavity 3, one end of the hydraulic conveying channel 1-1 is communicated with the annular hydraulic cavity 3, and the other end is converged with the other hydraulic conveying channels 1-1 and communicated with a hydraulic oil main conveying pipeline.
It should be noted that, in this embodiment, one end of the inner shaft 1 is connected to one of two adjacent working arms in the ship retraction system, all the annular sleeves 2 are connected to the connecting end of the other working arm, and since there is a relative rotation relationship between the two adjacent working arms in the ship retraction system, there is a rotation relationship between the inner shaft 1 connected to one of the working arms and the annular sleeve 2 connected to the other working arm, and hydraulic oil is also required to be transferred between the inner shaft 1 and the annular sleeve 2, in order to avoid the problem of leakage of hydraulic oil at the connection point due to long-term use of the externally arranged connecting pipe, in this embodiment, a hydraulic transfer passage 1-1 is opened in the inner shaft 1, and an annular hydraulic chamber 3 formed between the hydraulic transfer passage 1-1 and the inner shaft 1 and the annular sleeve 2 is communicated, and a transfer interface 3-1 communicated with the liquid inlet of the other working arm is provided on the annular hydraulic chamber 3, that is, the hydraulic transfer passage 1-1 is communicated with the transfer interface 3-1 through the annular hydraulic chamber 3, so that only hydraulic oil leakage is required to be avoided in this embodiment. The measure adopted in the embodiment is that a rotary sealing component is arranged at the joint of the annular sleeve 2 and the inner shaft 1, and the sealing effect is realized through the rotary sealing component, and meanwhile, the rotation relation between the annular sleeve 2 and the inner shaft 1 is not influenced.
Alternatively, in order to form the annular hydraulic chamber 3, as shown in fig. 2, the annular sleeve 2 described in this embodiment has an annular groove 2-1, and the notch of the annular groove 2-1 is disposed toward the outer circumferential wall of the inner shaft 1, and forms the annular hydraulic chamber 3 with the outer circumferential wall of the inner shaft 1.
It should be noted that, in this embodiment, the inner ring of the annular sleeve 2 is in clearance fit with the outer circumferential surface of the inner shaft 1, so as to avoid interference caused by rotation between the two. In addition, in order to facilitate the installation of the annular sleeve 2, the annular sleeve 2 is composed of an upper semi-annular sleeve and a lower semi-annular sleeve, and the upper semi-annular sleeve and the lower semi-annular sleeve are respectively and symmetrically arranged at two radial sides of the inner shaft 1 and are connected together to realize the sleeving of the annular sleeve 2 and the inner shaft 1.
Optionally, in order to realize the sealing of the annular hydraulic cavity 3 and ensure the rotation connection relationship between the inner shaft 1 and the annular sleeve 2, as shown in fig. 2, each group of rotary sealing assemblies in this embodiment includes two annular connecting pieces 4 coaxially and symmetrically sleeved on the inner shaft 1, two sealing rings 5, and two inner ring elastic pieces 6 symmetrically arranged on the annular sleeve 2 along the axial direction of the annular sleeve 2; each inner ring elastic sheet 6 is arranged corresponding to one annular connecting sheet 4, and an abutting force is generated between the opposite surfaces of the inner ring elastic sheet 6 and the annular connecting sheet 4; each sealing ring 5 is arranged between the inner ring elastic sheet 6 and the annular connecting sheet 4 and is extruded, so that the sealing effect is realized.
In this embodiment, the inner ring of each annular connecting piece 4 is welded on the outer circumferential wall of the inner shaft 1, and the outer ring of the annular connecting piece 4 extends to one side; the inner ring of the inner ring elastic sheet 6 is fixed on the annular sleeve 2, the outer ring of the inner ring elastic sheet 6 extends to one side, and the extending direction of the inner ring elastic sheet is consistent with that of the outer ring of the annular connecting sheet 4, so that the inner ring elastic sheet and the outer ring of the annular connecting sheet are arranged face to face; the annular connecting piece 4 and the inner annular elastic piece 6 do not have a connection relationship, the opposite surfaces of the inner annular elastic piece 6 and the annular connecting piece 4 are abutted together, and meanwhile, the sealing ring 5 is arranged between the inner annular elastic piece 6 and the annular connecting piece and extrudes the inner annular elastic piece, so that the sealing of a gap between the inner annular elastic piece and the annular connecting piece is realized, the rotating connection between the inner shaft 1 and the annular sleeve 2 is ensured, and the sealing of the annular hydraulic cavity 3 is realized. The sealing ring 5 is fixed on the inner ring elastic sheet 6 or the annular connecting sheet 4, and when the inner shaft 1 and the annular sleeve 2 rotate, the sealing ring 5 and the inner ring elastic sheet 6/the annular connecting sheet 4 rotate relatively. In addition, the annular connecting piece 4 and the inner ring spring piece 6 in the embodiment can be arranged outside the annular hydraulic cavity 3, and can also be arranged inside the annular hydraulic cavity 3; when the two annular connecting pieces 4 and the two inner ring elastic pieces 6 are arranged outside the annular hydraulic cavity 3, the two annular connecting pieces 4 and the two inner ring elastic pieces 6 are arranged at two axial sides of the annular sleeve 2, and the inner ring elastic pieces 6 are formed by bending inner ring edges at two axial sides of the annular sleeve 2 to the outside; when the two annular connecting pieces 4 and the two inner ring elastic pieces 6 are arranged in the annular sleeve 2 when the two annular connecting pieces are arranged in the annular hydraulic cavity 3, wherein the inner ring elastic pieces 6 are formed by bending inner ring edges on two axial sides of the annular sleeve 2 inwards.
Further, in order to increase the sealing effect of the annular hydraulic chamber 3, as shown in fig. 2, in this embodiment, the outer ring of each annular connecting piece 4 and the outer ring of the inner ring spring 6 extend radially outwards, and the sealing ring 5 is disposed at a side close to the extending end.
In this embodiment, the annular connecting piece 4 and the inner ring elastic piece 6 adopt a radial extending mode, so that the overlapping area of the opposite surfaces of the annular connecting piece 4 and the inner ring elastic piece can be increased, and the size of the sealing ring 5 can be increased, so that the sealing effect can be better realized.
Further, in order to better increase the sealing effect of the annular hydraulic chamber 3, as shown in fig. 2, each set of rotary sealing assembly in this embodiment further includes two inner matching rings 7, two inner matching rings 7 are sleeved on the inner shaft 1 and are in clearance fit with the inner shaft 1, the two inner matching rings 7 are respectively connected to the inner ring of the annular sleeve 2 and respectively correspond to a set of annular connecting pieces 4 and inner ring elastic pieces 6, and each inner matching ring 7 seals a gap generated on one side of the annular connecting pieces 4 and the inner ring elastic pieces 6 away from the extending end.
In this embodiment, the sealing effect of the annular hydraulic chamber 3 can be better achieved by matching with the design of the inner ring 7.
Further, in order to increase the sealing effect of the annular hydraulic chamber 3, as shown in fig. 3 and 4, each set of rotary sealing assemblies in this embodiment further includes a plurality of clamping units, where a plurality of the clamping units are arranged in an annular array and clamped on the annular connecting sheet 4 and the inner ring elastic sheet 6, so as to increase the extrusion force of the annular connecting sheet 4 and the inner ring elastic sheet 6 on the sealing ring 5, thereby increasing the sealing effect of the annular hydraulic chamber 3; specifically, each clamping unit comprises two clamping jaws 8 and a clamping jaw connecting part 9, and the two clamping jaws 8 are symmetrically arranged on the clamping jaw connecting part 9; the two clamping jaws 8 are clamped on the extending ends of the two inner ring spring plates 6 or the annular connecting plates 4 and have clamping force.
It should be noted that, in this embodiment, the annular connecting piece 4 and the inner ring elastic piece 6 are both made of metal and have resilience force, and by the design of the two clamping jaws 8 and the clamping jaw connecting portion 9, the two inner ring elastic pieces 6 or the annular connecting piece 4 gather inwards, and under the resilience of the annular connecting piece 4 or the inner ring elastic piece 6, the sealing ring 5 between the two is subjected to larger extrusion force, so as to increase the sealing effect. The clamping jaw connecting portion 9 is a source of clamping force power of the two clamping jaws 8, the two clamping jaws 8 can be connected by adopting a connecting portion of a common clamp, the source of clamping force is guaranteed through deformation of a torsion spring, and the clamping force can be realized by using a transmission mechanism.
Further, in order to ensure that the rotational movement between the inner shaft 1 and the annular sleeve 2 does not interfere with the clamping unit, as shown in fig. 3 and 4, the clamping unit, the annular connecting piece 4 and the inner ring spring 6 described in the present embodiment are all disposed in the annular hydraulic chamber 3; the inner ring of each annular connecting piece 4 is fixed on the outer circumferential wall of the inner shaft 1, and the extending ends of the two annular connecting pieces 4 are inwards closed to form a boss with a trapezoid cross section; the inner ring spring 6 is formed by bending inner ring edges at two axial sides of the annular sleeve 2 inwards and is respectively positioned at two sides of the two annular connecting sheets 4 to form a clamping shape.
It should be noted that, each inner ring spring 6 is arranged parallel to the corresponding annular connecting piece 4, wherein the length of the inner ring spring 6 extending radially is longer than that of the annular connecting piece 4, so that the inner ring spring 6 protrudes from the annular connecting piece 4, and the two clamping jaws 8 are clamped on the inner ring spring 6, so that the clamping jaws 8 are convenient to clamp.
Further, in order to ensure that the clamping force of the clamping jaw 8 can be adjusted, as shown in fig. 5, the clamping jaw connecting portion 9 in this embodiment includes a double-threaded screw rod 9-1 rotatably connected to inner walls on two sides of the annular groove 2-1 in the annular sleeve 2 and two first guide posts 9-2 fixedly connected to inner walls on two sides of the annular groove 2-1 respectively, one end of the clamping jaw 8 is provided with a threaded hole, a through hole is formed in a middle position of the clamping jaw 8, the two clamping jaws 8 are respectively sleeved on the two first guide posts 9-2 through respective through holes, and the two clamping jaws 8 are respectively screwed on two thread sections of the double-threaded screw rod 9-1 through respective threaded holes.
In the embodiment, the clamping jaw 8 and the double-threaded screw 9-1 are in threaded fit, in the specific implementation process, the two clamping jaws 8 linearly move and close under the guidance of the first guide post 9-2 by rotating the double-threaded screw 9-1, so that the extrusion force of the clamping jaw 8 to the inner ring elastic sheet 6 is changed, and the pressure of the inner ring elastic sheet 6 to the sealing ring 5 is adjusted. In addition, since the double-threaded screw 9-1 is mounted on the annular sleeve 2, when the annular sleeve 2 rotates circumferentially around the inner shaft 1, the double-threaded screw 9-1 also carries the two clamping jaws 8 to rotate synchronously, and the two clamping jaws 8 and the corresponding inner ring spring 6 are in a relatively static state.
Further, in order to prevent the double-threaded screw 9-1 from rotating reversely, as shown in fig. 10, a brake assembly, specifically a ratchet brake assembly, is further provided on the double-threaded screw 9-1 in this embodiment, the ratchet brake assembly includes a ratchet 10, a pawl 11 and a mounting frame 20, the ratchet 10 is sleeved on the double-threaded screw 9-1, the mounting frame 20 is fixedly connected to the inner wall of the annular groove 2-1 of the annular sleeve 2, one end of the pawl 11 is hinged to the mounting frame 20, and the other end of the pawl 11 is inserted into the ratchet 10.
It should be noted that, the end of the pawl 11 connected with the mounting frame 20 is also provided with a torsion spring for homing the pawl 11; the ratchet wheel 10 can only rotate unidirectionally under the limit of the pawl 11 and has the same rotation direction as the double-threaded screw 9-1; in the implementation, the double-threaded screw 9-1 rotates and drives the ratchet 10 to rotate, and at the moment, the pawl 11 and the ratchet 10 only generate an abutting force and have no braking effect; once the double-threaded screw 9-1 has a tendency to rotate reversely, the pawl 11 is inserted into the ratchet 10, thereby realizing a braking effect; therefore, through the design of the ratchet 10 and the pawl 11, after transmission, the double-threaded screw 9-1 is limited, so that the double-threaded screw 9-1 can only rotate in one direction, the clamping force of the clamping unit can be increased, and the double-threaded screw cannot rotate in the opposite direction.
Further, in order to realize synchronous adjustment of all clamping units, as shown in fig. 4 and 7, an inner gear ring 12 is coaxially rotatably installed in the annular sleeve 2 in this embodiment, and a gear 13 is sleeved on each double-threaded screw rod 9-1, and the inner gear ring 12 is meshed with the gear 13.
In the embodiment, through the design of the inner gear ring 12 and the gear 13, when the inner gear ring 12 is driven to rotate, all the gears 13 can be synchronously driven to rotate, the gears 13 drive the double-threaded screw 9-1 connected with the gears to rotate, the clamping jaws 8 on the double-threaded screw 9-1 synchronously move in opposite directions, the clamping function is realized, and the uniform stress between the inner ring elastic sheet 6 and the annular connecting sheet 4 is ensured.
Further, in order to realize the rotational connection between the inner gear ring 12 and the annular sleeve 2, as shown in fig. 4, an annular insert plate 14 is coaxially and fixedly installed in the annular sleeve 2 in this embodiment, and the outer annular wall of the annular insert plate 14 is welded or integrally formed with the inner annular wall of the annular sleeve 2; the annular inserting plate 14 is sleeved outside the inner gear ring 12 and embedded in the annular groove, and the annular inserting plate 14 is in clearance fit with the annular groove.
In this embodiment, through the design of the annular plugboard 14 and the annular groove, the rotation installation of the inner gear ring 12 is realized, and the inner gear ring 12 can rotate in the annular sleeve 2.
Further, in order to realize rotation of the inner gear ring 12, as shown in fig. 4, a permanent magnet ring 15 is sleeved outside the annular sleeve 2 in the embodiment, and the permanent magnet ring 15 is rotationally connected with the annular sleeve 2; specifically, an outer ring groove 2-2 is formed along the circumferential direction of the outer ring wall of the annular sleeve 2, the outer ring groove 2-2 is opposite to the inner ring gear 12, and a permanent magnet ring 15 is embedded in the outer ring groove 2-2 and magnetically connected with the inner ring gear 12.
In the embodiment, the permanent magnet ring 15 is arranged outside the annular sleeve 2, and the permanent magnet ring 15 is magnetically connected with the inner gear ring 12 inside the annular sleeve 2, in a specific implementation, the permanent magnet ring 15 is manually driven to rotate outside the annular sleeve 2, and the inner gear ring 12 can be driven to rotate together through magnetic force, so that the driving effect of the inner gear ring 12 is realized; meanwhile, the sealing device is driven by magnetic force, and a transmission shaft or other auxiliary parts are not required to be installed by punching or slotting on the annular sleeve 2, so that transmission is realized, and the sealing effect of the annular hydraulic cavity 3 is ensured. In addition, when the permanent magnet ring 15 and the annular sleeve 2 are kept fixed, the inner gear ring 12 is also kept fixed relative to the annular sleeve 2, so that the driving force is prevented from being generated to the double-threaded screw 9-1 all the time by the continuous rotation of the inner gear ring 12, the clamping force of the clamping jaw 8 to the inner ring spring piece 6 is overlarge, the deformation of the inner ring spring piece 6 is caused, and the sealing effect is influenced.
Further, in order to better achieve the sealing effect of the annular hydraulic chamber 3, as shown in fig. 4, each group of rotary sealing assemblies in this embodiment further includes a plurality of internal supporting units circumferentially and uniformly disposed between the two annular connecting pieces 4, and each internal supporting unit is disposed corresponding to one clamping unit and can rotate synchronously along with the circumferential rotation of the clamping unit; the inner supporting unit comprises a trapezoid extrusion block 16 and a linear driver 17, wherein the trapezoid extrusion block 16 is connected with the linear driver 17 and moves outwards in the radial direction under the driving of the linear driver 17.
In order to realize radial movement of the trapezoidal extrusion block 16, the linear driver 17 and the trapezoidal extrusion block 16 in this embodiment form a screw-nut pair, the linear driver 17 includes a screw 17-1, a second guide post 17-2, a first bevel gear 17-3 and a second bevel gear 17-4, one end of the screw 17-1 is mounted on the inner shaft 1 and rotates around the inner shaft, the other end of the screw 17-1 extends along the radial direction of the inner shaft 1, and the trapezoidal extrusion block 16 is screwed on the screw 17-1; one end of the second guide post 17-2 is connected to the inner shaft 1, rotates around the inner shaft, and the other end extends along the radial direction of the inner shaft 1 and is inserted into the trapezoid extrusion block 16, and the second guide post 17-2 is in clearance fit with the trapezoid extrusion block 16; the first bevel gear 17-3 is sleeved on the double-threaded screw rod 9-1, and the second bevel gear 17-4 is sleeved at one end of the screw rod 17-1 far away from the inner shaft 1 and meshed with the first bevel gear 17-3.
The trapezoid extrusion block 16 is provided with a threaded hole and a through hole, the threaded connection with the screw rod 17-1 is realized through the threaded hole, and the insertion connection with the second guide post 17-2 is realized through the through hole; in addition, in the embodiment, the double-threaded screw 9-1 rotates and drives the first bevel gear 17-3 to rotate, the first bevel gear 17-3 drives the second bevel gear 17-4 to rotate, the second bevel gear 17-4 drives the screw rod 17-1 to rotate, the trapezoidal extrusion block 16 converts the rotation motion of the screw rod 17-1 into the self linear motion under the guidance of the second guide post 17-2, so that the trapezoidal extrusion block 16 radially moves along the axis direction of the screw rod 17-1, an extrusion effect is generated on the annular connecting pieces 4 at two sides, the extrusion force of the annular connecting pieces 4 and the inner ring elastic pieces 6 on the sealing ring 5 is gradually increased, and a better sealing effect is achieved.
In addition, in order to realize synchronous rotation of the internal support unit and the clamping unit, as shown in fig. 3 and 4, a rotating ring 18 is sleeved on the inner shaft 1 in the embodiment, and the rotating ring 18 can rotate around the central axis of the inner shaft 1; specifically, a rotating groove is formed in the inner shaft 1 and located at a position between the two annular connecting sheets 4 along the circumferential direction of the outer wall of the inner shaft 1, and the rotating ring 18 is coaxially embedded in the rotating groove and is in clearance fit with the rotating groove; the screw rod 17-1 and the second guide post 17-2 are rotatably connected to the rotary ring 18, so that the screw rod 17-1 and the second guide post 17-2 are indirectly rotatably connected with the inner shaft 1.
In the embodiment, the annular sleeve 2 rotates relative to the inner shaft 1, since the clamping unit is mounted on the annular sleeve 2, the clamping unit also rotates together with the annular sleeve 2, and the first bevel gear 17-3 is fixedly mounted on the double-threaded screw 9-1 in the clamping unit, so that the first bevel gear 17-3 also rotates along with the double-threaded screw 9-1 in a circumferential direction, the first bevel gear 17-3 is meshed with the second bevel gear 17-4, a circumferential rotation driving force is generated for the second bevel gear 17-4 under the condition that the first bevel gear 17-3 does not rotate, the second bevel gear 17-4 drives the screw rod 17-1 connected with the second bevel gear to rotate in a circumferential direction, and the screw rod 17-1 drives the trapezoid extrusion block 16, the rotating ring 18 and the second guide post 17-2 to rotate around the inner shaft 1 in a circumferential direction, so that the design of the rotating ring 18 does not influence the rotation of the annular sleeve 2.
Furthermore, in order to reduce the friction force between the trapezoid extrusion block 16 and the annular connecting piece 4 in the radial movement and circumferential rotation process, rolling friction is formed between the outer wall of the trapezoid extrusion block 16 and the surface of the annular connecting piece 4 in the embodiment; specifically, a plurality of balls 16-1 protruding from the outer wall of the trapezoidal extrusion block 16 are disposed on the outer wall of the trapezoidal extrusion block 16 along the circumferential direction.
In order to realize the installation of the balls 16-1, a plurality of installation grooves are formed in the outer wall of the trapezoid extrusion block 16 along the circumferential direction, and the balls 16-1 are embedded in the installation grooves and can rotate in the installation grooves. In the process of linearly moving the trapezoid extrusion block 16 along the radial direction, the balls 16-1 are in contact with the annular connecting piece 4, and the sliding friction between the trapezoid extrusion block 16 and the annular connecting piece 4 is converted into rolling friction, so that the friction force between the trapezoid extrusion block 16 and the annular connecting piece is reduced, and the resistance of the annular sleeve 2 to rotary motion is reduced.
In this embodiment, the inner shaft 1 and the annular sleeve 2 are respectively fixed at the joint ends of two adjacent working arms, the annular hydraulic chambers 3 are in a sealed state by adjusting the clamping unit and the internal supporting unit, hydraulic oil is injected into the hydraulic conveying channels 1-1, flows into the annular hydraulic chambers 3 respectively, and is output into the annular sleeve 2 through the conveying interfaces 3-1 communicated with the annular hydraulic chambers 3, so that hydraulic transmission is realized.
The working process of the invention is further described below to further demonstrate the working principle and advantages of the invention:
step 1, mounting a clamping unit:
step 11, mounting the inner gear ring 12 on the annular plugboard 14 in the annular sleeve 2;
step 12, a double-thread screw 9-1 screwed with two clamping jaws 8 is installed in the annular sleeve 2, so that a gear 13 on the double-thread screw 9-1 is meshed with the inner gear ring 12, the two clamping jaws 8 are respectively positioned at two sides of the two inner ring spring plates 6, and a first guide post 9-2 in the annular sleeve 2 is inserted into the clamping jaws 8;
Step 13, inserting the ratchet in the ratchet brake assembly into the ratchet so that the double threaded screw 9-1 can rotate only in one direction.
Step 2, mounting an internal supporting unit:
step 21, nesting the rotating ring 18 on the rotating groove of the inner shaft 1 and between the two annular connecting sheets 4;
Step 22, a screw rod 17-1 is rotatably arranged on the rotary ring 18, and a trapezoid extrusion block 16 is in threaded connection with the screw rod 17-1 and is positioned between the two annular connecting sheets 4;
In step 23, the second guide post 17-2 passes through the through hole of the trapezoidal extrusion block 16 and is fixedly mounted on the rotary ring 18.
Step 3, mounting between the annular sleeve and the inner shaft: the upper semi-annular sleeve and the lower semi-annular sleeve are symmetrically arranged on two radial sides of the inner shaft 1 and are connected together, at the moment, the two annular connecting sheets 4 are positioned between the inner ring elastic sheets 6, and the first bevel gear 17-3 on the double-threaded screw 9-1 and the second bevel gear 17-4 on the screw rod 17-1 are meshed together, so that the installation of the annular sleeve 2 and the inner shaft 1 is realized.
Step 4, sealing the annular hydraulic cavity: rotating the permanent magnet ring 15, wherein the permanent magnet ring 15 drives the inner gear ring 12 to rotate, the inner gear ring 12 drives the gear 13, the double-threaded screw 9-1 and the first bevel gear 17-3 to rotate in sequence, and the two clamping jaws 8 move in opposite directions along the axis direction of the double-threaded screw 9-1 and generate extrusion force on the inner ring spring piece 6; meanwhile, the first bevel gear 17-3 drives the second bevel gear 17-4 to rotate, the second bevel gear 17-4 drives the screw rod 17-1 to rotate, the trapezoid extrusion block 16 moves upwards along the axis direction of the screw rod 17-1 and extrudes the two annular connecting pieces 4, the two sealing rings 5 are extruded by the annular connecting pieces 4 and the inner ring elastic pieces 6 respectively, and the sealing effect of the annular hydraulic cavity 3 is guaranteed.
Step 5, rotary hydraulic transmission: the inner shaft 1 and the annular sleeve 2 are respectively fixed at the joint ends of two adjacent working arms, the annular sleeve 2 is in a rotating state under the drive of the working arms, hydraulic oil is injected into the hydraulic conveying channels 1-1, the hydraulic oil respectively flows into each annular hydraulic cavity 3, and then is output into the working arms connected with the annular sleeve 2 through the conveying interfaces 3-1 communicated with the annular hydraulic cavities 3, so that hydraulic transmission is realized.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (6)
1. A rotation type hydraulic transmission for boats and ships receive and release system, its characterized in that: the rotary hydraulic transmission unit comprises an inner shaft (1) and N rotary hydraulic transmission units sleeved on the inner shaft (1) along the axial direction of the inner shaft (1);
Each rotary hydraulic transmission unit comprises an annular sleeve (2) and a group of rotary sealing assemblies, wherein the annular sleeve (2) is coaxially sleeved on the inner shaft (1) and is in rotary connection with the outer circumferential wall of the inner shaft (1) through the rotary sealing assemblies; a sealed annular hydraulic cavity (3) is formed between the annular sleeve (2) and the outer circumferential wall of the inner shaft (1), and each annular hydraulic cavity (3) is communicated with a conveying interface (3-1);
N hydraulic conveying channels (1-1) are formed in the inner shaft (1) along the axial direction, each hydraulic conveying channel (1-1) is arranged corresponding to one annular hydraulic cavity (3), one end of each hydraulic conveying channel (1-1) is communicated with the annular hydraulic cavity (3), and the other end of each hydraulic conveying channel is converged with the other hydraulic conveying channels (1-1) and communicated with a hydraulic oil main conveying pipeline;
The rotary sealing assembly comprises two annular connecting sheets (4) which are coaxial and symmetrically sleeved on the inner shaft (1), two sealing rings (5) and two inner ring elastic sheets (6) which are symmetrically arranged on the annular sleeve (2) along the axial direction of the annular sleeve (2); each inner ring elastic sheet (6) is arranged opposite to one annular connecting sheet (4); each sealing ring (5) is arranged between two adjacent inner ring elastic sheets (6) and the annular connecting sheet (4) and is extruded to realize a sealing effect;
The outer ring of each annular connecting sheet (4) and the outer ring of each inner ring elastic sheet (6) extend outwards in the radial direction, and the sealing ring (5) is arranged at one side close to the extending end; the extending ends of the two annular connecting sheets (4) are inwards closed and form a boss with a trapezoid cross section; the inner ring elastic sheet (6) is formed by bending inner ring edges at two axial sides of the annular sleeve (2) inwards and is respectively positioned at two sides of the two annular connecting sheets (4) to form a clamping shape;
Each group of rotary sealing assembly further comprises a plurality of clamping units, and the plurality of clamping units are arranged in an annular array and clamped on the inner ring elastic sheet (6); each clamping unit comprises two clamping jaws (8) and a clamping jaw connecting part (9), and the two clamping jaws (8) are symmetrically arranged on the clamping jaw connecting parts (9); the two clamping jaws (8) are clamped on the extending ends of the two inner ring spring plates (6) and have clamping force;
The clamping jaw connecting portion (9) comprises a double-thread screw rod (9-1) which is rotationally connected to the inner walls of the two sides of the annular sleeve (2) and two first guide posts (9-2) which are respectively and fixedly connected to the inner walls of the two sides, one end of each clamping jaw (8) is provided with a threaded hole, the middle position of each clamping jaw (8) is provided with a through hole, the two clamping jaws (8) are respectively sleeved on the two first guide posts (9-2) through the respective through holes, and the two clamping jaws (8) are respectively connected to the two sections of the thread sections of the double-thread screw rod (9-1) through the respective threaded holes in a threaded mode.
2. A rotary hydraulic transmission for a marine retraction system according to claim 1 wherein: and a brake component is further arranged on the double-threaded screw rod (9-1) to prevent the double-threaded screw rod (9-1) from rotating reversely.
3. A rotary hydraulic transmission for a marine retraction system according to claim 1 wherein: an annular sleeve (2) is coaxially and rotatably provided with an inner gear ring (12), each double-threaded screw rod (9-1) is sleeved with a gear (13), and the inner gear ring (12) is meshed with the gears (13) to realize synchronous driving of a plurality of clamping units.
4. A rotary hydraulic transmission for a marine retraction system according to claim 3 wherein: the annular sleeve (2) is sleeved with a permanent magnet ring (15), and the permanent magnet ring (15) is rotationally connected with the annular sleeve (2); the permanent magnet ring (15) is magnetically connected with the inner gear ring (12).
5. A rotary hydraulic transmission for a marine retraction system according to claim 1 wherein: each group of rotary sealing assembly further comprises a plurality of internal supporting units which are circumferentially and uniformly arranged between the two annular connecting sheets (4), and each internal supporting unit is arranged corresponding to one clamping unit and can synchronously rotate along with the circumferential rotation of the clamping unit; the internal supporting unit comprises a trapezoid extrusion block (16) and a linear driver (17); the linear driver (17) and the trapezoid extrusion block (16) form a screw-nut pair;
The linear driver (17) comprises a screw rod (17-1), a second guide post (17-2), a first bevel gear (17-3) and a second bevel gear (17-4), one end of the screw rod (17-1) is rotatably arranged on the inner shaft (1), the other end of the screw rod (17-1) extends along the radial direction of the inner shaft (1), and the trapezoid extrusion block (16) is in threaded connection with the screw rod (17-1); one end of the second guide post (17-2) is rotationally connected to the inner shaft (1), the other end of the second guide post extends along the radial direction of the inner shaft (1) and is inserted into the trapezoid extrusion block (16), and the second guide post (17-2) is in clearance fit with the trapezoid extrusion block (16); the first bevel gear (17-3) is sleeved on the double-threaded screw (9-1), and the second bevel gear (17-4) is sleeved at one end of the screw (17-1) far away from the inner shaft (1) and meshed with the first bevel gear (17-3).
6. A rotary hydraulic transmission for a marine retraction system according to claim 5 wherein: the outer wall of the trapezoid extrusion block (16) is provided with a plurality of balls (16-1) protruding out of the outer wall of the trapezoid extrusion block (16) along the circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410496541.1A CN118088559B (en) | 2024-04-24 | 2024-04-24 | Rotary hydraulic transmission device for ship retraction system |
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| CN202410496541.1A CN118088559B (en) | 2024-04-24 | 2024-04-24 | Rotary hydraulic transmission device for ship retraction system |
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| CN118088559B true CN118088559B (en) | 2024-06-28 |
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Citations (2)
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| CN101949450A (en) * | 2009-07-09 | 2011-01-19 | 朱方文 | Marine sealing device capable of replacing seal ring automatically |
| CN110043734A (en) * | 2018-01-16 | 2019-07-23 | 管道开发公司 | The matching piece of independent hydraulic clamp and sealing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7467797B2 (en) * | 2003-04-07 | 2008-12-23 | Eagle Industry Co., Ltd. | Lip-type seal |
| CN201407287Y (en) * | 2009-02-20 | 2010-02-17 | 南京高精船用设备有限公司 | Marine hydraulic coupling and oil distributor combination structure |
| US11667340B2 (en) * | 2020-03-06 | 2023-06-06 | Caterpillar Inc. | Screw profile mud-packing preventing |
| CN111661291B (en) * | 2020-04-30 | 2021-11-16 | 武汉船用机械有限责任公司 | Sealing device for pod propeller |
| CN112197009B (en) * | 2020-09-10 | 2021-05-11 | 清华大学 | Magnetic liquid sealing device's shell and stirred tank/reation kettle |
| CN213541293U (en) * | 2020-10-26 | 2021-06-25 | 四川久龙密封件制造有限公司 | External sealing device of spring |
| CN112591017A (en) * | 2020-12-16 | 2021-04-02 | 宁波启航船业有限公司 | Control hub mechanism acting on ship water storage |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949450A (en) * | 2009-07-09 | 2011-01-19 | 朱方文 | Marine sealing device capable of replacing seal ring automatically |
| CN110043734A (en) * | 2018-01-16 | 2019-07-23 | 管道开发公司 | The matching piece of independent hydraulic clamp and sealing |
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