CN110385598B - Self-alignment positioning device for box parts of marine diesel engine - Google Patents
Self-alignment positioning device for box parts of marine diesel engine Download PDFInfo
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- CN110385598B CN110385598B CN201910770571.6A CN201910770571A CN110385598B CN 110385598 B CN110385598 B CN 110385598B CN 201910770571 A CN201910770571 A CN 201910770571A CN 110385598 B CN110385598 B CN 110385598B
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- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
- B23Q3/186—Aligning devices
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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
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
Abstract
The invention discloses a self-alignment positioning device for a box part of a marine diesel engine, which comprises a plurality of cushion blocks which are arranged on a T-shaped groove platform in a rectangular array; the self-alignment mechanism is arranged on the T-shaped groove platform in a right-facing manner in the length direction, and the cushion block is positioned between the two self-alignment mechanisms; the self-aligning mechanism comprises a base arranged along the width direction of the T-shaped groove platform and two sliding plates slidably arranged along the length direction of the base, and one ends, deviating from each other, of the two sliding plates are provided with clamping plates which are vertically arranged; the middle part of the base is provided with a rotary table through a rotary shaft arranged along the length direction of the T-shaped groove platform, and the other end of the rotary shaft is provided with a handle arranged along the radial direction; the side of the turntable, which is away from the handle, is provided with an Archimedes spiral groove, and the sliding plate is provided with a convex edge matched with the Archimedes spiral groove. The invention has the advantages of reasonable structural design, small operation difficulty, capability of quickly adjusting the position of the box body, production efficiency improvement and the like.
Description
Technical Field
The invention relates to the technical field of machining of marine diesel engine boxes, in particular to a self-alignment positioning device for marine diesel engine box parts.
Background
The marine diesel engine has high thermal efficiency, good economy, easy starting and great adaptability to various ships, and is used as ship propulsion power soon after being developed. Different from the production modes of an automobile engine production line and a special machine, the production mode of key parts of the marine diesel engine is single-piece small-batch production. The box body is a basic part of the marine diesel engine, and related parts such as a shaft, a sleeve, a gear and the like of related parts in the marine diesel engine are connected into a whole body, and the parts are kept at correct mutual positions so as to transmit torque or change rotating speed to complete specified movement. Therefore, the processing quality of the box body directly influences the performance precision and the service life of the marine diesel engine. The box body parts have complex structure, thin and uneven wall, multiple processing parts and large processing difficulty.
At present, the marine diesel engine box is mainly hoisted to a designated position through a travelling crane, and is manually pushed and pulled to adjust to a positioning position when falling to be close to a processing table, as shown in fig. 1, the marine diesel engine is large in size and heavy in weight, so that the operation difficulty of position adjustment is high, the labor intensity is high, a great amount of time is required for adjustment once, the production efficiency is influenced, and potential safety hazards exist in manual push-pull adjustment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a structural design reasonable, the operation degree of difficulty is little, can the quick adjustment box position, improves marine diesel engine box class part self-alignment positioner of production efficiency
In order to solve the technical problems, the invention adopts the following technical scheme:
the self-alignment positioning device for the marine diesel engine box body parts is characterized by comprising a plurality of cushion blocks which are arranged on a T-shaped groove platform in a rectangular array, wherein the cushion blocks are detachably arranged on the T-shaped groove platform; the two sides of the T-shaped groove platform in the length direction are provided with self-alignment mechanisms in a right-facing manner, and the cushion block is positioned between the two self-alignment mechanisms; the self-aligning mechanism comprises a base arranged along the width direction of the T-shaped groove platform and two sliding plates slidably arranged along the length direction of the base, and one ends, facing away from each other, of the two sliding plates are provided with clamping plates which are vertically arranged; the middle part of the base is provided with a rotary table through a rotary shaft arranged along the length direction of the T-shaped groove platform, and the other end of the rotary shaft is provided with a handle arranged along the radial direction; the side of the turntable, which is away from the handle, is provided with an Archimedes spiral groove, and the sliding plate is provided with a convex edge matched with the Archimedes spiral groove.
By adopting the structure, the box type part to be processed is hoisted to the appointed position by adopting the travelling crane and is placed on the cushion block, then the two self-alignment mechanisms are moved to the positions close to the two ends of the box body, the rotating handle enables the rotary table to drive the two sliding plates to shrink inwards simultaneously, the box body is aligned along the length direction of the T-shaped groove platform, and the clamping and positioning are carried out by using the clamp.
Further, the bottom of the base is provided with a plurality of inverted T-shaped clamping blocks matched with the T-shaped grooves on the T-shaped groove platform, and the inverted T-shaped clamping blocks of the base can be slidably clamped into the T-shaped grooves on the T-shaped groove platform.
Therefore, the self-alignment mechanism can be moved away along the T-shaped groove before the box body is hoisted in place, so that the lower part of the box body can be conveniently operated in place; after the box body is adjusted in place and clamped, the self-alignment mechanism can be moved away along the T-shaped groove, so that blocking is avoided, and machining operation is facilitated.
Further, at least one first roller mechanism is respectively arranged at two ends of the base, the first roller mechanism comprises a top support component with a telescopic lower end and rollers arranged below the top support component, and when the lower end of the top support component contracts, the lower end of each roller is higher than the bottom of the base, so that the bottom of the base can fall on the T-shaped groove platform; when the lower end of the top support assembly stretches out, the lower end of the roller is lower than the bottom of the base, so that the bottom of the base is separated from the T-shaped groove platform, and a gap is reserved between the inverted T-shaped clamping block and the T-shaped groove.
Like this, through set up first rolling mechanism at the both ends of base, can stretch out the lower extreme of shoring the subassembly when moving from the alignment mechanism, it is ejecting with the gyro wheel to lift the base, utilize the gyro wheel to remove labour saving and time saving.
Further, the base is provided with a top support assembly mounting hole and a roller accommodating hole, wherein the top support assembly mounting hole and the roller accommodating hole are sequentially arranged along the vertical direction; the top support assembly comprises a top support rod vertically penetrating through the top support assembly mounting hole, and a guide structure arranged along the axial direction is arranged between the top support rod and the top support assembly mounting hole, so that the top support rod can move along the axial direction of the top support assembly mounting hole; the upper end of the top support rod is provided with a boss which is formed by protruding outwards in the radial direction, the lower end of the mounting hole of the top support assembly is provided with a convex ring which is formed by protruding inwards in the radial direction, the top support rod is sleeved with a spiral spring, and two ends of the spiral spring are respectively abutted against the boss and the convex ring; the top support assembly further comprises a top compression rod which is pressed at the upper end of the top support assembly mounting hole through a cover plate, and the upper end of the top compression rod is connected with a rotating handle which penetrates through the cover plate; the lower end of the top pressing rod and the upper end of the top supporting rod are provided with inclined planes which are correspondingly arranged, so that when the top pressing rod rotates, the top pressing rod extrudes the inclined planes of the top supporting rod through the inclined planes to enable the top supporting rod to extend downwards.
Further, the part of the top support rod, which is positioned at the lower end of the boss, is in a regular polygon prism shape, the shape of the inner hole of the convex ring is matched with that of the top support rod, and the shape of the inner hole of the convex ring is matched with that of the top support rod, so that the top support rod can move along the axial direction of the top support assembly mounting hole.
Further, the upper end of the pushing rod is provided with an inner hexagonal hole, and the rotating handle is an inner hexagonal wrench.
Further, the cushion block comprises a cushion block main body which is integrally in a cuboid shape, a gap is formed in the middle of the cushion block main body, a jacking mechanism is arranged on the cushion block main body, the jacking mechanism comprises a jacking oil cylinder and a jacking plate connected to a piston rod of the jacking oil cylinder, and rolling elements are arranged on the jacking plate; when the piston rod of the jacking cylinder is contracted, the upper end of the rolling element is lower than the upper surface of the cushion block main body; when the piston rod of the jacking cylinder extends out, the upper end of the rolling element is higher than the upper surface of the cushion block main body.
Therefore, when the position of the box body is adjusted through the self-aligning mechanism, the jacking plate can be ejected upwards through the jacking oil cylinder, so that the rolling elements on the jacking plate are supported at the bottom of the box body, and the sliding friction between the box body and the cushion block is changed into rolling friction, so that the box body can be adjusted more conveniently and rapidly. Once the box body is adjusted in place, the jacking oil cylinder is contracted, so that the box body stably falls on the cushion block, and the box body is prevented from sideslip.
Further, the jacking plate is vertically arranged, and the lower end of the jacking plate is hinged to the cushion block main body; the rolling elements are rollers arranged at the upper end of the jacking plate, and the jacking oil cylinder is obliquely arranged between the jacking plate and the cushion block main body, so that the jacking plate can swing around the hinge shaft.
The lifting plate is vertically arranged, and the lower end of the lifting plate is hinged to the cushion block main body, so that the lifting plate can swing around the hinge shaft under the telescopic pushing of the lifting oil cylinder, and when the lifting plate swings to an inclined angle, the vertical height of the roller is reduced, and therefore the roller at the upper end can be hidden below the upper surface of the cushion block main body, and the box body can be stably placed on the cushion block; when the jacking plate swings to a vertical state, the roller rises to the highest position, so that the roller at the upper end can be pushed to the upper surface of the cushion block main body, and the position of the box body can be conveniently adjusted. During the concrete implementation, can also install the jacking board level in the jacking hydro-cylinder upper end of vertical setting to set up the rollable ball at the jacking board upper surface, lift the jacking board through the jacking hydro-cylinder, when the ball of jacking board is higher than the upper surface of backing plate main part, the box can realize the removal in arbitrary direction on the horizontal plane through the ball, makes things convenient for the adjustment of box position more.
Furthermore, the jacking plates are provided with two blocks, the lower ends of the two blocks are hinged to the cushion block main body, and the upper ends of the two jacking plates are hinged to connecting plates to form a parallelogram structure.
Thus, two jacking plates are arranged on each cushion block, and the stability of the roller supporting box body can be improved.
In conclusion, the invention has the advantages of reasonable structural design, small operation difficulty, capability of quickly adjusting the position of the box body, production efficiency improvement and the like.
Drawings
Fig. 1 is a schematic structural view of a marine diesel engine tank.
Fig. 2 is a schematic structural diagram of the self-aligning device in the present embodiment.
Fig. 3 is a schematic structural diagram of a pad.
Fig. 4 is a schematic structural view of the positioning jig.
Fig. 5 is a schematic cross-sectional view of fig. 4.
Fig. 6 is a schematic view of a partial structure of a positioning jig for positioning and clamping a box.
Fig. 7 is a schematic structural view of the roller mechanism.
Fig. 8 is a schematic diagram of an arrangement structure of the auxiliary righting cylinder on the T-shaped groove platform.
Fig. 9 is a schematic diagram of a righting hydraulic system.
Detailed Description
The present invention will be described in further detail with reference to examples.
Examples: the utility model provides a marine diesel engine box class part is from aligning positioner, is including being used for adjusting the self-alignment device of box position, be used for carrying out the positioning fixture of location and clamping to the box and be used for assisting box hoist and mount to descend auxiliary righting system. As shown in fig. 2, the self-aligning device comprises four cushion blocks 2 which are arranged on a T-shaped groove platform 1 in a rectangular array, wherein the cushion blocks 2 are detachably arranged on the T-shaped groove platform; the two sides of the T-shaped groove platform in the length direction are provided with self-alignment mechanisms 3 in a right-facing manner, and the cushion block 2 is positioned between the two self-alignment mechanisms 3; the self-aligning mechanism 3 comprises a base 31 arranged along the width direction of the T-shaped groove platform, and two sliding plates 32 slidably arranged along the length direction of the base 31, wherein one ends of the two sliding plates 32, which are away from each other, are provided with clamping plates 33 which are vertically arranged; the middle part of the base 31 is provided with a rotary table 34 through a rotary shaft arranged along the length direction of the T-shaped groove platform, and the other end of the rotary shaft is provided with a handle arranged along the radial direction; the turntable 34 has an archimedean spiral groove on a side facing away from the handle, and the slide plate 32 has a rib matched with the archimedean spiral groove.
By adopting the structure, the box type part to be processed is hoisted to the appointed position by adopting the travelling crane and is placed on the cushion block, then the two self-alignment mechanisms are moved to the positions close to the two ends of the box body, the rotating handle enables the rotary table to drive the two sliding plates to shrink inwards simultaneously, the box body is aligned along the length direction of the T-shaped groove platform, and the clamping and positioning are carried out by using the clamp.
When in implementation, the bottom of the base 31 is provided with a plurality of inverted T-shaped clamping blocks matched with the T-shaped grooves on the T-shaped groove platform, and the inverted T-shaped clamping blocks of the base 31 can be slidably clamped into the T-shaped grooves on the T-shaped groove platform.
Therefore, the self-alignment mechanism can be moved away along the T-shaped groove before the box body is hoisted in place, so that the lower part of the box body can be conveniently operated in place; after the box body is adjusted in place and clamped, the self-alignment mechanism can be moved away along the T-shaped groove, so that blocking is avoided, and machining operation is facilitated.
Because the marine diesel engine box body is great in weight, fall put on the cushion after, with the cushion between frictional force also bigger, directly adopt first push hydro-cylinder and second push hydro-cylinder directly to adjust the box, make easy and impaired between bottom half and the cushion friction each other, in this embodiment, cushion 2 specifically adopts following structure: as shown in fig. 3, the lifting mechanism comprises a lifting cylinder 22 and a lifting plate 23 connected to a piston rod of the lifting cylinder 22, wherein the lifting plate 23 is provided with a rolling element 24; when the piston rod of the jacking cylinder 22 is contracted, the upper end of the rolling element 24 is lower than the upper surface of the cushion block main body; when the piston rod of the jacking cylinder 22 is extended, the upper end of the rolling element 24 is higher than the upper surface of the pad body.
Like this, when the position of box is adjusted through first push cylinder and second push cylinder, can be through the jacking cylinder with the jacking board ejecting upwards, make the rolling element support on the jacking board in the bottom of box, make the sliding friction between box and the cushion become rolling friction for the adjustment of box convenient and fast more. Once the box body is adjusted in place, the jacking oil cylinder is contracted, so that the box body stably falls on the cushion block, and the box body is prevented from sideslip.
In practice, the jacking plate 23 is vertically arranged, and the lower end of the jacking plate is hinged to the cushion block main body 21; the rolling elements 24 are rollers mounted on the upper end of the jacking plate 23, and the jacking cylinder 22 is obliquely disposed between the jacking plate 23 and the pad body 21 so that the jacking plate 23 can swing about a hinge shaft.
The lifting plate is vertically arranged, and the lower end of the lifting plate is hinged to the cushion block main body, so that the lifting plate can swing around the hinge shaft under the telescopic pushing of the lifting oil cylinder, and when the lifting plate swings to an inclined angle, the vertical height of the roller is reduced, and therefore the roller at the upper end can be hidden below the upper surface of the cushion block main body, and the box body can be stably placed on the cushion block; when the jacking plate swings to a vertical state, the roller rises to the highest position, so that the roller at the upper end can be pushed to the upper surface of the cushion block main body, and the position of the box body can be conveniently adjusted. During the concrete implementation, can also install the jacking board level in the jacking hydro-cylinder upper end of vertical setting to set up the rollable ball at the jacking board upper surface, lift the jacking board through the jacking hydro-cylinder, when the ball of jacking board is higher than the upper surface of backing plate main part, the box can realize the removal in arbitrary direction on the horizontal plane through the ball, makes things convenient for the adjustment of box position more.
In practice, two jacking plates 23 are provided, the lower ends of the two jacking plates 23 are hinged to the cushion block main body 21, and the upper ends of the two jacking plates 23 are hinged to a connecting plate 25 to form a parallelogram structure.
Thus, two jacking plates are arranged on each cushion block, and the stability of the roller supporting box body can be improved.
As shown in fig. 4, the positioning fixture 7 includes a base 71, and a positioning assembly 72 and a clamping assembly 73 mounted on the base 71, where the base 71 includes two base bodies that are perpendicular to each other, so that the projection of the base 71 on the T-slot platform is L-shaped; the positioning assembly 72 includes a positioning rod 721 telescopically disposed vertically on both of the base bodies; the clamping assembly 73 includes a rotary clamping cylinder 731 vertically installed on one of the base bodies, and a pressing plate 732 is vertically installed at an upper end of the rotary clamping cylinder 731; the bottom of one of the base bodies has an inverted T-shaped clamp block that mates with a T-shaped slot on the T-shaped slot platform, and the clamp assembly 73 further includes a clamp cylinder 733 mounted vertically downward on the other base body.
After the box body is adjusted to be in place, the inverted T-shaped clamping block of the base body is clamped into the T-shaped groove closest to the box body, then the base is moved along the T-shaped groove, the other base body is close to the side surface of the end part of the box body, the two positioning rods extend towards the box body, the box body is positioned, and the inverted T-shaped clamping block is clamped against the side wall of the T-shaped groove under the reaction force of the positioning rods; then the clamping cylinder stretches downwards to tightly prop up, so that the base is clamped; and the rotary clamping cylinder rotates the pressing plate to the box body to clamp the box body, as shown in fig. 6. Therefore, the clamping and positioning of the box body can be completed through one set of positioning clamp, and compared with a detachable or universal clamping and positioning device, the box body clamping and positioning device is more efficient.
In particular, as shown in fig. 5, the positioning assembly 72 further includes a push rod 722 slidably disposed along the length direction of the base body, and the push rods 722 on the two base bodies are located at the same height; the intersection of the two base bodies is also provided with a linear driving mechanism 74 arranged along the angular bisector of the two base bodies, the front end of a telescopic rod of the linear driving mechanism 74 is provided with a push block 75, and the projection of the push block 75 on the vertical direction is in a symmetrical triangle relative to the telescopic rod; a return spring 76 is provided between one end of the push rod 722 far away from the linear driving mechanism 74 and the base body, so that the other end of the push rod 722 abuts against the push block 75; a gear 723 is further disposed at the intersection of the push rod 722 and the positioning rod 721, and the sides of the push rod 722 and the positioning rod 721 are provided with gear teeth meshed with the gear 723, so that the push rod 722 drives the gear to rotate and drives the positioning rod 721 to stretch and retract when moving along the length direction.
By adopting the structure, the push block is in a symmetrical triangle structure relative to the telescopic rod of the linear driving mechanism, so that when the push block extends along with the telescopic rod, the inclined planes on two sides symmetrically push the two push rods to move along the length direction, compress the reset spring, and the push rods drive the positioning rods to extend through the gears, thereby being capable of positioning the box body. When the telescopic rod is retracted, the push rod moves reversely under the action of the return spring, and the positioning rod is driven to retract.
In practice, the middle part of the push rod 722 is provided with a bar-shaped hole which is horizontally and penetratingly arranged, and the positioning rod 721 passes through the bar-shaped hole; the push rod 722 is provided with gear teeth on the upper side and the lower side of the strip-shaped hole, and the width of the gear 723 is matched with the thickness of the push rod 722.
Like this, because the push rod all has the teeth of a cogwheel in the upper and lower both sides of bar hole, and the width of gear and the thickness assorted of push rod for the upper and lower both ends of gear mesh with the teeth of a cogwheel of the upper and lower both sides of push rod respectively, and the effort symmetry of exerting on the gear when the push rod removes is located the upper and lower both ends of gear, and the gear middle part meshes with the locating lever mutually, thereby the effort when making the three meshing is more balanced, and the operation is more smooth and easy.
In practice, the linear driving mechanism 74 is a hydraulic cylinder or an air cylinder.
In order to facilitate the self-alignment mechanism and the base to move on the T-shaped groove platform, two roller mechanisms 5 are respectively arranged on the base and the base, as shown in fig. 7, each roller mechanism 5 comprises a top support component with a telescopic lower end and a roller 51 arranged below the top support component, when the lower end of the top support component is contracted, the lower end of the roller 51 is higher than the bottom surface of the base or the base where the lower end of the roller 51 is positioned, so that the bottom of the roller can fall on the T-shaped groove platform; when the lower end of the top support assembly extends out, the lower end of the roller 51 is lower than the bottom surface of the base or the base, so that the bottom of the roller is separated from the T-shaped groove platform, and a gap is reserved between the inverted T-shaped clamping block and the T-shaped groove.
Like this, through set up gyro wheel mechanism at base and base, can stretch out the lower extreme of shoring the subassembly when moving from alignment mechanism and base, it is ejecting with the gyro wheel to lift up the bottom surface of base or base, utilize the gyro wheel to remove labour saving and time saving.
In implementation, the base and the base are provided with a top support assembly mounting hole and a roller accommodating hole for accommodating the roller 51, wherein the top support assembly mounting hole and the roller accommodating hole are sequentially arranged along the vertical direction; the top support assembly comprises a top support rod 52 vertically penetrating through the top support assembly mounting hole, and a guide structure arranged along the axial direction is arranged between the top support rod 52 and the top support assembly mounting hole, so that the top support rod 52 can move along the axial direction of the top support assembly mounting hole; the upper end of the top support rod 52 is provided with a boss protruding outwards in the radial direction, the lower end of the top support assembly mounting hole is provided with a convex ring protruding inwards in the radial direction, the top support rod 52 is sleeved with a spiral spring 53, and two ends of the spiral spring 53 are respectively abutted against the boss and the convex ring; the top support assembly further comprises a top pressure rod 54 which is pressed at the upper end of the top support assembly mounting hole through a cover plate, and the upper end of the top pressure rod 54 is connected with a rotating handle which penetrates through the cover plate; the lower end of the push rod 54 and the upper end of the push rod 52 have inclined surfaces which are correspondingly arranged, so that when the push rod 54 rotates, the push rod 54 presses the inclined surface of the push rod 52 through the inclined surfaces to enable the push rod 52 to extend downwards.
In implementation, the portion of the top support rod 52 at the lower end of the boss is in a regular polygonal prism shape, and the shape of the inner hole of the convex ring is matched with the shape of the top support rod 52, so that the top support rod 52 can move along the axial direction of the top support assembly mounting hole.
In practice, the upper end of the pushing rod 54 is provided with an inner hexagonal hole, and the rotating handle is an inner hexagonal wrench.
In this embodiment, as shown in fig. 8 and 9, the auxiliary righting system includes two auxiliary righting cylinders 61 and a righting hydraulic system connected between the two auxiliary righting cylinders 61; the two auxiliary righting cylinders 61 are arranged at intervals in the width direction of the T-shaped groove platform, and the distance between the two auxiliary righting cylinders is smaller than the width of the box-type part to be processed; the lowest height of the auxiliary righting cylinder 61 is lower than the height of the cushion block 2 when vertically arranged, and the highest height is higher than the height of the cushion block 2; the centralizing hydraulic system comprises two three-position four-way valves 62 which are respectively connected with the auxiliary centralizing oil cylinder 61, an oil inlet of each three-position four-way valve 62 is connected with an oil pump 63, and two oil outlets are closed when a valve core of each three-position four-way valve 62 is in a middle position; a two-position four-way valve 64 is also connected between the two auxiliary righting cylinders 61, the two-position four-way valve 64 comprises an O-shaped functional position with an oil port fully sealed and an H-shaped functional position with an oil port fully communicated, and the middle position is the O-shaped functional position; the rod cavity of one auxiliary righting cylinder 61 and the rodless cavity of the other auxiliary righting cylinder 61 are respectively connected to two oil ports opposite to each other on the two-position four-way valve 64; a two-position two-way valve and a first one-way valve 65 which is in one-way circulation towards the two-position four-way valve 64 are arranged in parallel between the rod cavity of one auxiliary righting cylinder 61 and the two-position four-way valve 64, a two-position two-way valve and a second one-way valve 66 which is in one-way conduction towards the rod cavity are arranged in parallel between the rodless cavity of the other auxiliary righting cylinder 61 and the two-position four-way valve 64, the two-position two-way valve comprises a functional position with a closed oil port and a functional position with a conduction oil port, and the oil port in the middle position is conducted.
By adopting the structure, the box body can be assisted and righted by adopting the following method steps: before the box body is hoisted in place, the two-position four-way valve is kept at the functional position of the middle O-shaped valve, so that an oil way between the two auxiliary righting oil cylinders is disconnected; two auxiliary righting cylinders are respectively arranged through two three-position four-way valves, so that the piston rod of one auxiliary righting cylinder is completely retracted, and the piston rod of the other auxiliary righting cylinder is completely retracted; returning the three-position four-way valve to the middle position, closing both oil outlets, and regulating the valve core of the two-position four-way valve to the H-shaped functional position; lifting the box body above the two auxiliary righting cylinders by using a crane, slowly lowering the box body to enable the bottom of the box body to be in contact with the auxiliary righting cylinders with the piston rods extending completely, and compressing the piston rods of the auxiliary righting cylinders downwards until the piston rods of the other auxiliary righting cylinders are in contact with the bottom of the box body; the valve core of the two-position two-way valve with the piston rod extending out of the shorter auxiliary righting oil cylinder is adjusted to the functional position with the oil port closed, the lower box body is continuously and slowly controlled until the extending lengths of the piston rods of the two auxiliary righting oil cylinders are consistent, so that the box body is adjusted to be in a horizontal state, and the two auxiliary righting oil cylinders are controlled to shrink simultaneously until the box body falls on the cushion block. In the above steps, after the valve core of the two-position four-way valve is adjusted to the H-shaped functional position, the auxiliary righting cylinder with the piston rod extending completely contacts with the bottom of the box body, and contracts under the action of the weight of the box body, oil in the rodless cavity of the auxiliary righting cylinder is distributed to the rodless cavity of the other auxiliary righting cylinder through the H-shaped functional position, so that the piston rod of the other auxiliary righting cylinder extends, and the two auxiliary righting cylinders form a floating relation. And after the two piston rods are contacted with the bottom of the box body, the two-position two-way valve on the auxiliary righting cylinder with the piston rod extending out of the shorter auxiliary righting cylinder is closed, so that the piston rod of the auxiliary righting cylinder can only extend under the control of the one-way valve, and the piston rod of the other auxiliary righting cylinder can still shrink, thus, the piston rod of the auxiliary righting cylinder is continuously compressed downwards at the higher side of the box body, the piston rod of the other auxiliary righting cylinder is forced to extend out, and the lower side of the box body is lifted, so that the box body is righted.
When the auxiliary righting cylinder is implemented, the piston rod of the auxiliary righting cylinder is hinged with a base plate, and the bottom of the base plate is provided with an inclination sensor.
Therefore, the angle detected by the inclination angle sensor can be used for judging which piston rod of the two auxiliary righting cylinders stretches out to be shorter, and whether the stretching lengths of the two auxiliary righting cylinders are consistent with each other, so that whether the box body is righted is judged.
In practice, the hydraulic system further comprises a diverter valve 67 and a collecting valve 68, the rodless cavities of the two auxiliary righting cylinders are connected to the collecting valve 68, and the rod cavities are connected to the diverter valve 67; two-position two-way valves for controlling the on-off of the oil passage are respectively connected between the flow dividing valve 67 and the oil pump 63 and between the flow collecting valve 68 and the oil tank.
Therefore, when the extension lengths of the piston rods of the two auxiliary righting cylinders are consistent, the box body is righted, the two three-position four-way valves are kept in the middle position, and the two-position two-way valves between the flow dividing valve and the oil pump as well as between the flow collecting valve and the oil tank are connected, so that the two auxiliary righting cylinders can be controlled to synchronously descend.
In implementation, the end part of the cylinder body of the auxiliary righting cylinder 61 is hinged with a mounting seat, and the mounting seat is mounted on a T-shaped groove platform; the installation seat is also provided with a rotating motor, and an output shaft of the rotating motor is connected with a cylinder body of the auxiliary righting cylinder 61, so that the auxiliary righting cylinder 61 can be converted between a vertical state and a lodging state.
Thus, after the box body is placed on the cushion block, the auxiliary righting cylinder can be rotated to a lodging storage state.
When the auxiliary righting system is implemented, two sets of auxiliary righting cylinders 61 of the other auxiliary righting system are arranged at intervals in the length direction of the T-shaped groove platform, and the distance between the two auxiliary righting cylinders is smaller than the length of a box part to be processed.
Thus, the inclination in the longitudinal direction of the case can be righted.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The self-alignment positioning device for the marine diesel engine box body parts is characterized by comprising a plurality of cushion blocks which are arranged on a T-shaped groove platform in a rectangular array, wherein the cushion blocks are detachably arranged on the T-shaped groove platform; the two sides of the T-shaped groove platform in the length direction are provided with self-alignment mechanisms in a right-facing manner, and the cushion block is positioned between the two self-alignment mechanisms; the self-aligning mechanism comprises a base arranged along the width direction of the T-shaped groove platform and two sliding plates slidably arranged along the length direction of the base, and one ends, facing away from each other, of the two sliding plates are provided with clamping plates which are vertically arranged; the middle part of the base is provided with a rotary table through a rotary shaft arranged along the length direction of the T-shaped groove platform, and the other end of the rotary shaft is provided with a handle arranged along the radial direction; an Archimedes spiral groove is formed in one side of the turntable, which is away from the handle, and a convex edge matched with the Archimedes spiral groove is formed on the sliding plate;
the bottom of the base is provided with a plurality of inverted T-shaped clamping blocks matched with the T-shaped grooves on the T-shaped groove platform, and the inverted T-shaped clamping blocks of the base can be slidably clamped into the T-shaped grooves on the T-shaped groove platform;
the two ends of the base are respectively provided with at least one first roller mechanism, the first roller mechanisms comprise a top support assembly with a telescopic lower end and rollers arranged below the top support assembly, and when the lower end of the top support assembly is contracted, the lower end of each roller is higher than the bottom of the base, so that the bottom of the base can fall on the T-shaped groove platform; when the lower end of the top support assembly extends out, the lower end of the roller is lower than the bottom of the base, so that the bottom of the base is separated from the T-shaped groove platform, and a gap is reserved between the inverted T-shaped clamping block and the T-shaped groove;
the base is provided with a top support assembly mounting hole and a roller accommodating hole, wherein the top support assembly mounting hole and the roller accommodating hole are sequentially arranged along the vertical direction; the top support assembly comprises a top support rod vertically penetrating through the top support assembly mounting hole, and a guide structure arranged along the axial direction is arranged between the top support rod and the top support assembly mounting hole, so that the top support rod can move along the axial direction of the top support assembly mounting hole; the upper end of the top support rod is provided with a boss which is formed by protruding outwards in the radial direction, the lower end of the mounting hole of the top support assembly is provided with a convex ring which is formed by protruding inwards in the radial direction, the top support rod is sleeved with a spiral spring, and two ends of the spiral spring are respectively abutted against the boss and the convex ring; the top support assembly further comprises a top compression rod which is pressed at the upper end of the top support assembly mounting hole through a cover plate, and the upper end of the top compression rod is connected with a rotating handle which penetrates through the cover plate; the lower end of the top pressing rod and the upper end of the top supporting rod are provided with inclined planes which are correspondingly arranged, so that when the top pressing rod rotates, the top pressing rod extrudes the inclined planes of the top supporting rod through the inclined planes to enable the top supporting rod to extend downwards;
the part of the top support rod, which is positioned at the lower end of the boss, is in a regular polygonal prism shape, the shape of the inner hole of the convex ring is matched with that of the top support rod, and the shape of the inner hole of the convex ring is matched with that of the top support rod, so that the top support rod can move along the axial direction of the top support assembly mounting hole; the upper end of the pushing rod is provided with an inner hexagonal hole, and the rotating handle is an inner hexagonal wrench.
2. The self-aligning and positioning device for the marine diesel engine box parts according to claim 1, wherein the cushion block comprises a cushion block main body which is integrally in a cuboid shape, a notch is formed in the middle of the cushion block main body, a jacking mechanism is arranged on the cushion block main body, the jacking mechanism comprises a jacking oil cylinder and a jacking plate connected to a piston rod of the jacking oil cylinder, and rolling elements are arranged on the jacking plate; when the piston rod of the jacking cylinder is contracted, the upper end of the rolling element is lower than the upper surface of the cushion block main body; when the piston rod of the jacking cylinder extends out, the upper end of the rolling element is higher than the upper surface of the cushion block main body.
3. The self-aligning and positioning device for marine diesel engine box parts according to claim 2, wherein the jacking plate is vertically arranged, and the lower end of the jacking plate is hinged on the cushion block main body; the rolling elements are rollers arranged at the upper end of the jacking plate, and the jacking oil cylinder is obliquely arranged between the jacking plate and the cushion block main body, so that the jacking plate can swing around the hinge shaft.
4. The self-aligning and positioning device for marine diesel engine box parts according to claim 3, wherein two jacking plates are arranged, the lower ends of the jacking plates are hinged to the cushion block main body, and the upper ends of the two jacking plates are hinged to connecting plates to form a parallelogram structure.
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Address after: Chongqing University of technology, 69 Hongguang Avenue, Banan District, Chongqing 400054 Patentee after: Chongqing University of Technology Country or region after: China Patentee after: Chongqing GAOJIN Industrial Co.,Ltd. Address before: Chongqing University of technology, 69 Hongguang Avenue, Banan District, Chongqing 400054 Patentee before: Chongqing University of Technology Country or region before: China Patentee before: CHONGQING GAOKIN INDUSTRY Co.,Ltd. |