CN116276789A - Hydraulic puller and control method thereof - Google Patents
Hydraulic puller and control method thereof Download PDFInfo
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- CN116276789A CN116276789A CN202310081895.5A CN202310081895A CN116276789A CN 116276789 A CN116276789 A CN 116276789A CN 202310081895 A CN202310081895 A CN 202310081895A CN 116276789 A CN116276789 A CN 116276789A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The hydraulic puller comprises a hydraulic puller Ma Zhuti and a hydraulic pump station, wherein the hydraulic puller body comprises a support, a main oil cylinder, a puller and a puller control oil cylinder, the main oil cylinder is fixed inside the support, the extendable end of a piston rod on the main oil cylinder extends out of the middle part of one end of the support from one end of the main oil cylinder, the puller comprises a main shaft, a connecting frame and a plurality of connecting rod assemblies uniformly distributed around the periphery of the support, the connecting rod assemblies comprise a first connecting rod, a second connecting rod and a puller head, the main shaft is fixedly connected with the middle part of the other end of the support, the connecting frame is sleeved outside the main shaft, the periphery of the connecting frame is movably connected with one ends of the plurality of first connecting rods, the other ends of the first connecting rods are movably connected with the puller head through the second connecting rods, and the extendable end of the piston rod on the puller control oil cylinder extends out of the other ends of the puller control oil cylinder and then is movably connected with the connecting frame. The design is good in reliability of disassembly work, wide in equipment application range and capable of avoiding damage to workpieces and equipment bodies.
Description
Technical Field
The invention belongs to the technical field of bearing dismounting tools, and particularly relates to a hydraulic puller and a control method thereof, which are suitable for improving the reliability of dismounting work and expanding the application range of hydraulic puller equipment.
Background
The puller is special mechanical equipment for disassembling large-sized workpieces such as bearings, cams, couplings, belt pulleys, backrest wheels, gears and the like of large-sized equipment such as steam turbines and the like. The puller generally takes the oil cylinder as main power output and is widely applied to working places such as factories, oil fields, ships, wharfs, railways, constructional engineering and the like. In the actual working process, the inventor finds that the following problems exist in the prior art:
1. the existing hydraulic puller works unstably when the related bearing and other workpieces are disassembled, has poor reliability, is easy to be blocked, has low operation efficiency, has small moving range of the puller and small application range of equipment;
2. the existing hydraulic puller middle pull claw head is easy to damage the workpiece and the equipment body when the workpiece is disassembled, and potential safety hazards exist.
3. The existing hydraulic puller lacks a height adjusting function and cannot be used under the working condition of higher or lower working height.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a hydraulic puller with high disassembly reliability and wide equipment application range and a control method thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a hydraulic pressure draws horse, hydraulic pressure draws horse includes hydraulic pressure and draws Ma Zhuti, hydraulic power unit, hydraulic pressure draws the horse main part and includes support, master cylinder, draws claw control cylinder, the master cylinder is located the support inside, the one end of master cylinder and the one end middle part fixed connection of support, the one end that can stretch out of the piston rod on the master cylinder stretches out to the one end middle part of support outward from the one end of master cylinder, the other end of master cylinder extends towards the other end of support, draw claw includes main shaft, link, a plurality of link assemblies of evenly arranging around support border, link assemblies includes first connecting rod, second connecting rod, draws claw head, the one end of main shaft and the other end middle part fixed connection of support, the link cover is established in the outside of main shaft, the circumference of link and the one end swing joint of a plurality of first connecting rods, the other end of first connecting rod and the one end swing joint of second connecting rod, the other end and the other end swing joint of second connecting rod, draw claw control cylinder are located the support outside, draw claw control cylinder one end and the one end of support and the movable connection of the oil cylinder, draw claw control cylinder C and the oil inlet of the oil-out of the movable connection of oil tank, the oil inlet and the oil outlet C.
One end of the pull claw head is movably connected with the first connecting rod, one side, close to the first connecting rod, of the other end of the pull claw head is provided with a workpiece clamping surface, the workpiece clamping surface is provided with a copper buffer plate, and the other side of the other end of the pull claw head is provided with a workpiece stop block.
The hydraulic pressure draws the horse still to include main frame, lifting unit, the hydraulic pressure draws the horse main part to be located inside the main frame, lifting unit includes speed reducer, motor, reel, wire rope, the speed reducer is installed on the motor, the motor is installed at main frame top, and its output shaft and the one end transmission cooperation of reel, the rotatable installation of reel is at main frame top, wire rope's one end is fixed on the reel, its other end and the top fixed connection of support.
The support comprises a front plate, a rear plate, a fixed shaft sleeve and a plurality of connecting plates, wherein the front plate and the rear plate are arranged in parallel, the connecting plates are uniformly arranged around the periphery of a main oil cylinder, two ends of each connecting plate are respectively and vertically connected with the periphery of the front plate and the periphery of the rear plate, one end of the main oil cylinder is fixed with the periphery of a through hole formed in the middle of the front plate through bolts, the other end of the main oil cylinder extends towards the rear plate, one end of a main shaft is arranged inside the fixed shaft sleeve, the periphery of the through hole formed in the middle of the fixed shaft sleeve and the rear plate is fixed through bolts, and a movable shaft sleeve is arranged between the other end of the main shaft and a connecting frame.
The support still includes fixed plate, mounting panel, guiding axle, the fixed plate is located between two adjacent connecting plates, and the both ends terminal surface at fixed plate top is connected perpendicularly with the periphery of front bezel, back plate respectively, and the middle part of fixed plate is connected perpendicularly with the middle part of mounting panel with the one end swing joint of pulling claw control cylinder, the bottom of fixed plate, the four corners of mounting panel respectively with the top fixed connection of a plurality of guiding axles, the guiding axle with offer the guiding hole insertion fit on the main frame bottom.
The lifting assembly further comprises a fixed pulley arranged at the top of the main frame, one end of the steel wire rope is fixed on the winding drum, and the other end of the steel wire rope bypasses the fixed pulley and is fixedly connected with the top of the connecting plate which is far away from the fixing plate.
The fixed plate and the connecting plate are consistent in structure and comprise a first plate and a second plate which are arranged in parallel, one end face of the first plate and one end face of the second plate are vertically connected with the periphery of the front plate, the other end face of the first plate and the other end face of the second plate are vertically connected with the periphery of the rear plate, the first connecting rod is positioned between the first plate and the second plate in the same connecting plate, and the middle of the first connecting rod is movably connected with the first plate and the second plate through a pin shaft.
The hydraulic puller further comprises an electric control cabinet, and the electric control cabinet is in signal connection with the main oil cylinder, the pulling claw control oil cylinder and the motor.
The control method of the hydraulic puller comprises the following steps of:
s1, controlling an oil outlet D of a pull claw control oil cylinder to feed oil and an oil inlet C to feed oil, wherein a piston rod on the pull claw control oil cylinder is retracted at the moment to drive a connecting frame to move towards a rear plate along a main shaft, so that one end of a second connecting rod, which is movably connected with a first connecting rod, is driven to lift, and one end of the second connecting rod, which is movably connected with a pull claw head, is driven to press downwards;
s2, when the pull claw head is pressed down to clamp a workpiece to be disassembled, controlling an oil inlet A and an oil outlet B of the main oil cylinder to discharge oil, and extending a piston rod on the main oil cylinder at the moment;
s3, when a piston rod of the main oil cylinder extends to be abutted against the workpiece main body, continuously controlling an oil outlet D of the pull claw control oil cylinder to feed oil and an oil inlet C to discharge oil, and continuously retracting the piston rod on the pull claw control oil cylinder until the workpiece is detached from the workpiece main body;
s4, controlling an oil outlet D of the pull claw control oil cylinder to discharge oil, an oil inlet C to discharge oil, an oil inlet of the main oil cylinder to discharge oil A and an oil outlet B to discharge oil, so that a piston rod on the pull claw control oil cylinder extends to an initial position, a piston rod on the main oil cylinder retracts to the initial position, and in the extending process of the piston rod on the pull claw control oil cylinder, the piston rod on the pull claw control oil cylinder drives a connecting frame to move along a main shaft in a direction away from a rear plate, and then drives one end of a second connecting rod, which is movably connected with a first connecting rod, to be pressed downwards, and one end of the second connecting rod, which is movably connected with a pull claw head, to be lifted, so as to loosen a workpiece.
The hydraulic puller further comprises a main frame and a lifting assembly, the hydraulic puller main body is positioned in the main frame, the lifting assembly comprises a speed reducer, a motor, a winding drum and a steel wire rope, the speed reducer is arranged on the motor, the motor is arranged at the top of the main frame, an output shaft of the motor is in transmission fit with one end of the winding drum, the winding drum is rotatably arranged at the top of the main frame, one end of the steel wire rope is fixed on the winding drum, and the other end of the steel wire rope is fixedly connected with the top of the bracket;
the control method further comprises position lifting adjustment, wherein the position lifting adjustment specifically comprises the following steps:
before step S1, the whole frame is moved to the front of a workpiece to be disassembled, a pull claw head on the hydraulic pull main body is opposite to the normal direction of the workpiece to be disassembled, then the motor is controlled to rotate forward or reversely according to the height of the workpiece to be disassembled, a steel wire rope is driven to be lowered or recovered, and the height of the hydraulic pull main body is adjusted to a proper position.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention discloses a hydraulic puller, which comprises a hydraulic puller Ma Zhuti and a hydraulic pump station, wherein a hydraulic puller main body comprises a bracket, a main oil cylinder, a puller and a puller control oil cylinder, wherein the main oil cylinder is positioned in the bracket, one end of the main oil cylinder is fixedly connected with the middle part of one end of the bracket, the extendable end of a piston rod on the main oil cylinder extends out of the middle part of one end of the bracket from one end of the main oil cylinder, the other end of the main oil cylinder extends towards the other end of the bracket, the puller comprises a main shaft, a connecting frame and a plurality of connecting rod assemblies uniformly distributed around the circumference of the bracket, the connecting rod assemblies comprise a first connecting rod, a second connecting rod and a puller head, one end of the main shaft is fixedly connected with the middle part of the other end of the bracket, the connecting frame is sleeved outside the main shaft, the circumference of the connecting frame is movably connected with one ends of the plurality of the first connecting rods, the other end of the first connecting rod is movably connected with one end of the second connecting rod, the middle part of the second connecting rod is movably connected with one end of the bracket, the other end of the second connecting rod is movably connected with the pull claw head, the pull claw control oil cylinder is positioned outside the bracket, one end of the pull claw control oil cylinder is movably connected with the middle part of the bracket, the extendable end of the piston rod on the pull claw control oil cylinder extends out of the other end of the pull claw control oil cylinder and is movably connected with the connecting frame, the oil outlet end of the hydraulic pump station is communicated with the oil inlet A and the oil outlet B of the main oil cylinder and the oil inlet C and the oil outlet D of the pull claw control oil cylinder, the device drives the pull claw head to clamp through the pull claw control oil cylinder, the extendable end of the piston rod of the main oil cylinder is tightly propped, the propping and pulling are respectively controlled by two different oil cylinders, the reliability of the dismounting work is ensured, on the other hand, the rotation range of the second connecting rod around the bracket is large, the moving range of the pull claw head connected with the second connecting rod is larger, and the application range of the device is further improved, in addition, because the pull claw head is movably connected with the second connecting rod, the pull claw head can be self-adapted to a reasonable angle when just contacting the workpiece, damage to the workpiece and the equipment body is avoided, and the flexibility of operation is improved. Therefore, the invention not only ensures the reliability of the disassembly work, but also has wide application range of the equipment and can avoid damage to the workpiece and the equipment body.
2. In the hydraulic puller, one end of the pull claw head is movably connected with the first connecting rod, one side, close to the first connecting rod, of the other end of the pull claw head is provided with a workpiece clamping surface, the workpiece clamping surface is provided with a copper buffer plate, and the other side of the other end of the pull claw head is provided with a workpiece stop block. Therefore, the invention can lead the workpiece to be less prone to be pulled out and the surface to be less prone to be scratched.
3. The invention also comprises a main frame and a lifting component, wherein the hydraulic drawing main body is positioned in the main frame, the lifting component comprises a speed reducer, a motor, a winding drum and a steel wire rope, the speed reducer is arranged on the motor, the motor is arranged at the top of the main frame, an output shaft of the motor is in transmission fit with one end of the winding drum, the winding drum is rotatably arranged at the top of the main frame, one end of the steel wire rope is fixed on the winding drum, and the other end of the steel wire rope is fixedly connected with the top of a bracket. Therefore, the invention has the lifting adjusting function and can adapt to different height working conditions.
4. The invention relates to a hydraulic puller, which comprises a fixed plate, a mounting plate and guide shafts, wherein the fixed plate is positioned between two adjacent connecting plates, the end faces of the two ends of the top of the fixed plate are respectively and vertically connected with the peripheries of a front plate and a rear plate, the middle part of the fixed plate is movably connected with one end of a pull claw control cylinder, the bottom of the fixed plate is vertically connected with the middle part of the mounting plate, four corners of the mounting plate are respectively and fixedly connected with the tops of a plurality of guide shafts, and the guide shafts are in insertion fit with guide holes formed in the bottom of a main frame. Therefore, the invention can play a role in guiding lifting and ensure stable lifting action.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of the hydraulic puller body of fig. 1.
Fig. 4 is a front view of the hydraulic puller body of fig. 1.
Fig. 5 is a cross-sectional view taken along A-A of fig. 4.
Fig. 6 is a schematic structural view of the bracket in fig. 3.
Fig. 7 is a schematic structural view of the connecting frame in fig. 3.
Fig. 8 is a schematic view of the pull tab of fig. 3.
Fig. 9 is a schematic structural view of the main frame of fig. 1.
In the drawing, a hydraulic puller main body 1, a bracket 11, a front plate 111, a rear plate 112, a fixed shaft sleeve 113, a connecting plate 114, a fixed plate 115, a mounting plate 116, a guide shaft 117, a first plate 118, a second plate 119, a main cylinder 12, an oil inlet A121, an oil outlet B122, a puller 13, a main shaft 131, a connecting frame 132, a first connecting rod 133, a second connecting rod 134, a puller head 135, a workpiece clamping surface 136, a copper buffer plate 137, a workpiece stop 138, a movable shaft sleeve 139, a puller control cylinder 14, an oil inlet C141, an oil outlet D142, a hydraulic pump station 2, a main frame 3, a guide hole 31, a lifting assembly 4, a speed reducer 41, a motor 42, a winding drum 43, a steel wire rope 44, a fixed pulley 45 and an electric control cabinet 5.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Referring to fig. 1 to 9, a hydraulic puller, the hydraulic puller includes a hydraulic puller main body 1 and a hydraulic pump station 2, the hydraulic puller main body 1 includes a support 11, a master cylinder 12, a pull claw 13 and a pull claw control cylinder 14, the master cylinder 12 is located inside the support 11, one end of the master cylinder 12 is fixedly connected with one end middle part of the support 11, an extendable end of a piston rod on the master cylinder 12 extends from one end of the master cylinder 12 to the outside of one end middle part of the support 11, the other end of the master cylinder 12 extends towards the other end of the support 11, the pull claw 13 includes a main shaft 131, a connecting frame 132, a plurality of connecting rod assemblies uniformly distributed around the circumference of the support 11, the connecting rod assemblies include a first connecting rod 133, a second connecting rod 134 and a pull claw head 135, one end of the main shaft 131 is fixedly connected with the other end middle part of the support 11, the connecting frame 132 is sleeved outside the main shaft 131, the other end of the first connecting rod 133 is movably connected with one end of the second connecting rod 134, the middle part of the first connecting rod 134 is movably connected with one end of the support 11, the oil inlet end of the control cylinder 14 is movably connected with the pull claw 14C of the control cylinder 14, the other end of the connecting rod 135 is movably connected with the control cylinder 14C of the support 11, and the oil inlet end of the control claw 14 is movably connected with the piston rod 14C of the outer end of the control cylinder 14, and the control claw 14 is movably connected with the end of the control claw 14C of the support 14.
One end of the pull claw head 135 is movably connected with the first link 133, a workpiece clamping surface 136 is provided on one side of the other end of the pull claw head 135, which is close to the first link 133, a copper buffer plate 137 is provided on the workpiece clamping surface 136, and a workpiece stop 138 is provided on the other side of the other end of the pull claw head 135.
The hydraulic puller further comprises a main frame 3 and a lifting assembly 4, the hydraulic puller main body 1 is located inside the main frame 3, the lifting assembly 4 comprises a speed reducer 41, a motor 42, a winding drum 43 and a steel wire rope 44, the speed reducer 41 is installed on the motor 42, the motor 42 is installed at the top of the main frame 3, an output shaft of the motor is in transmission fit with one end of the winding drum 43, the winding drum 43 is rotatably installed at the top of the main frame 3, one end of the steel wire rope 44 is fixed on the winding drum 43, and the other end of the steel wire rope 44 is fixedly connected with the top of the bracket 11.
The support 11 comprises a front plate 111, a rear plate 112, a fixed shaft sleeve 113 and a plurality of connecting plates 114, wherein the front plate 111 and the rear plate 112 are arranged in parallel, the connecting plates 114 are uniformly arranged around the periphery of the main oil cylinder 12, two ends of each connecting plate 114 are respectively and vertically connected with the peripheries of the front plate 111 and the rear plate 112, one end of the main oil cylinder 12 is fixed with the periphery of a through hole formed in the middle of the front plate 111 through bolts, the other end of the main oil cylinder 12 extends towards the rear plate 112, one end of the main shaft 131 is arranged inside the fixed shaft sleeve 113, the periphery of the through hole formed in the middle of the fixed shaft sleeve 113 and the rear plate 112 is fixed through bolts, and a movable shaft sleeve 139 is arranged between the other end of the main shaft 131 and the connecting frame 132.
The bracket 11 further comprises a fixing plate 115, a mounting plate 116 and a guide shaft 117, wherein the fixing plate 115 is positioned between two adjacent connecting plates 114, end faces at two ends of the top of the fixing plate 115 are respectively and vertically connected with the peripheries of the front plate 111 and the rear plate 112, the middle part of the fixing plate 115 is movably connected with one end of the pull claw control cylinder 14, the bottom of the fixing plate 115 is vertically connected with the middle part of the mounting plate 116, four corners of the mounting plate 116 are respectively and fixedly connected with the tops of the guide shafts 117, and the guide shafts 117 are in insertion fit with guide holes 31 formed in the bottom of the main frame 3.
The lifting assembly 4 further comprises a fixed pulley 45 arranged at the top of the main frame 3, one end of the steel wire rope 44 is fixed on the winding drum 43, and the other end of the steel wire rope bypasses the fixed pulley 45 and is fixedly connected with the top of a connecting plate 114 arranged far away from the fixed plate 115.
The fixed plate 115, the connecting plate 114 have the same structure, and each of the fixed plate 118 and the connecting plate 114 comprises a first plate 118 and a second plate 119 which are arranged in parallel, one end faces of the first plate 118 and the second plate 119 are vertically connected with the periphery of the front plate 111, the other end faces of the first plate 118 and the second plate 119 are vertically connected with the periphery of the rear plate 112, the first connecting rod 133 is located between the first plate 118 and the second plate 119 in the same connecting plate 114, and the middle part of the first connecting rod 133 is movably connected with the first plate 118 and the second plate 119 through a pin shaft.
The hydraulic puller further comprises an electric control cabinet 5, and the electric control cabinet 5 is in signal connection with the main oil cylinder 12, the pulling claw control oil cylinder 14 and the motor 42.
The control method of the hydraulic puller comprises the following steps of:
s1, controlling an oil outlet D142 of the pull claw control oil cylinder 14 to feed oil and an oil inlet C141 to discharge oil, wherein a piston rod on the pull claw control oil cylinder 14 is retracted at the moment to drive a connecting frame 132 to move towards a rear plate 112 along a main shaft 131, so that one end of a second connecting rod 134, which is movably connected with a first connecting rod 133, is lifted, and one end of the second connecting rod 134, which is movably connected with a pull claw head 135, is pressed down;
s2, when the pull claw head 135 is pressed down to clamp a workpiece to be disassembled, controlling the oil inlet A121 and the oil outlet B122 of the main oil cylinder 12 to discharge oil, and extending a piston rod on the main oil cylinder 12 at the moment;
s3, when the piston rod of the main oil cylinder 12 extends to be abutted against the workpiece main body, continuously controlling the oil outlet D142 of the pull claw control oil cylinder 14 to feed oil and the oil inlet C141 to discharge oil, and continuously retracting the piston rod on the pull claw control oil cylinder 14 until the workpiece is detached from the workpiece main body;
s4, controlling an oil outlet D142 of the pull claw control oil cylinder 14 to output oil, an oil inlet C141 to input oil and an oil inlet A121 of the main oil cylinder 12 to output oil, and an oil outlet B122 to input oil, so that a piston rod on the pull claw control oil cylinder 14 extends to an initial position, and a piston rod on the main oil cylinder 12 retracts to the initial position, wherein in the extending process of the piston rod on the pull claw control oil cylinder 14, the piston rod on the pull claw control oil cylinder 14 drives a connecting frame 132 to move along a main shaft 131 in a direction away from a rear plate 112, and further drives one end of a second connecting rod 134, which is movably connected with a first connecting rod 133, to be pressed down, and one end of the second connecting rod 134, which is movably connected with a pull claw head 135, to be lifted up, so as to loosen a workpiece.
The hydraulic puller further comprises a main frame 3 and a lifting assembly 4, the hydraulic puller main body 1 is positioned in the main frame 3, the lifting assembly 4 comprises a speed reducer 41, a motor 42, a winding drum 43 and a steel wire rope 44, the speed reducer 41 is arranged on the motor 42, the motor 42 is arranged at the top of the main frame 3, an output shaft of the motor is in transmission fit with one end of the winding drum 43, the winding drum 43 is rotatably arranged at the top of the main frame 3, one end of the steel wire rope 44 is fixed on the winding drum 43, and the other end of the steel wire rope 44 is fixedly connected with the top of the bracket 11;
the control method further comprises position lifting adjustment, wherein the position lifting adjustment specifically comprises the following steps:
before step S1, the whole frame is moved to the front of the workpiece to be disassembled, the pull claw head 135 on the hydraulic pull-horse main body 1 is opposite to the normal direction of the workpiece to be disassembled, then the motor 42 is controlled to rotate forward or reversely according to the height of the workpiece to be disassembled, the steel wire rope 44 is driven to be lowered or recovered, and the height of the hydraulic pull-horse main body 1 is adjusted to a proper position.
Example 1:
referring to fig. 1 to 9, a hydraulic puller comprises a hydraulic puller body 1 and a hydraulic pump station 2, wherein the hydraulic puller body 1 comprises a bracket 11, a main oil cylinder 12, a pulling claw 13 and a pulling claw control oil cylinder 14, the main oil cylinder 12 is positioned in the bracket 11, one end of the main oil cylinder 12 is fixedly connected with the middle part of one end of the bracket 11, the extendable end of a piston rod on the main oil cylinder 12 extends from one end of the main oil cylinder 12 to the outside of the middle part of one end of the bracket 11, the other end of the main oil cylinder 12 extends towards the other end of the bracket 11, the pulling claw 13 comprises a main shaft 131, a connecting frame 132 and three connecting rod assemblies uniformly distributed around the circumference of the bracket 11, the connecting rod assemblies comprise a first connecting rod 133, a second connecting rod 134 and a pulling claw head 135, one end of the main shaft 131 is fixedly connected with the middle part of the other end of the bracket 11, the connecting frame 132 is sleeved outside the main shaft 131, the circumference of the connecting frame 132 is movably connected with one ends of a plurality of first connecting rods 133, the other ends of the first connecting rods 133 are movably connected with one end of a second connecting rod 134, the middle part of the second connecting rod 134 is movably connected with one end of the bracket 11, the other end of the second connecting rod 134 is movably connected with one end of a pull claw head 135, one side, close to the first connecting rods 133, of the other end of the pull claw head 135 is provided with a workpiece clamping surface 136, the workpiece clamping surface 136 is provided with a copper buffer plate 137, the other side of the other end of the pull claw head 135 is provided with a workpiece stop block 138, the pull claw control cylinder 14 is positioned outside the bracket 11, one end of the pull claw control cylinder 14 is movably connected with the middle part of the bracket 11, the extendable end of a piston rod on the pull claw control cylinder 14 extends out of the other end of the pull claw control cylinder 14 and is movably connected with the connecting frame 132, the oil outlet end of the hydraulic pump station 2 is connected with an oil inlet A121 of the main cylinder 12, the oil outlet B122 is communicated with the oil inlet C141 and the oil outlet D142 of the pull claw control oil cylinder 14;
the control method of the hydraulic puller comprises the following steps in sequence:
s1, controlling an oil outlet D142 of the pull claw control oil cylinder 14 to feed oil and an oil inlet C141 to discharge oil, wherein a piston rod on the pull claw control oil cylinder 14 is retracted at the moment to drive a connecting frame 132 to move towards a rear plate 112 along a main shaft 131, so that one end of a second connecting rod 134, which is movably connected with a first connecting rod 133, is lifted, and one end of the second connecting rod 134, which is movably connected with a pull claw head 135, is pressed down;
s2, when the pull claw head 135 is pressed down to clamp a workpiece to be disassembled, controlling the oil inlet A121 and the oil outlet B122 of the main oil cylinder 12 to discharge oil, and extending a piston rod on the main oil cylinder 12 at the moment;
s3, when the piston rod of the main oil cylinder 12 extends to be abutted against the workpiece main body, continuously controlling the oil outlet D142 of the pull claw control oil cylinder 14 to feed oil and the oil inlet C141 to discharge oil, and continuously retracting the piston rod on the pull claw control oil cylinder 14 until the workpiece is detached from the workpiece main body;
s4, controlling an oil outlet D142 of the pull claw control oil cylinder 14 to output oil, an oil inlet C141 to input oil and an oil inlet A121 of the main oil cylinder 12 to output oil, and an oil outlet B122 to input oil, so that a piston rod on the pull claw control oil cylinder 14 extends to an initial position, and a piston rod on the main oil cylinder 12 retracts to the initial position, wherein in the extending process of the piston rod on the pull claw control oil cylinder 14, the piston rod on the pull claw control oil cylinder 14 drives a connecting frame 132 to move along a main shaft 131 in a direction away from a rear plate 112, and further drives one end of a second connecting rod 134, which is movably connected with a first connecting rod 133, to be pressed down, and one end of the second connecting rod 134, which is movably connected with a pull claw head 135, to be lifted up, so as to loosen a workpiece.
In the control method, the jacking and pulling operations are respectively controlled by the main oil cylinder 12 and the pull claw control oil cylinder 14, so that the reliability of equipment is ensured, overflow valves are arranged on the main oil cylinder 12 and the pull claw control oil cylinder 14, and when the pressure exceeds the respective set safety values of the oil cylinders, the pressure is relieved through the pressure relief valves, so that the equipment is safer and more reliable to use.
Example 2:
the difference from example 1 is that:
the hydraulic puller further comprises a main frame 3 and a lifting assembly 4, the hydraulic puller main body 1 is positioned in the main frame 3, the lifting assembly 4 comprises a speed reducer 41, a motor 42, a winding drum 43 and a steel wire rope 44, the speed reducer 41 is arranged on the motor 42, the motor 42 is arranged at the top of the main frame 3, an output shaft of the motor is in transmission fit with one end of the winding drum 43, the winding drum 43 is rotatably arranged at the top of the main frame 3, one end of the steel wire rope 44 is fixed on the winding drum 43, and the other end of the steel wire rope 44 is fixedly connected with the top of the bracket 11;
the control method further comprises position lifting adjustment, wherein the position lifting adjustment specifically comprises the following steps:
before step S1, the whole frame is moved to the front of the workpiece to be disassembled, the pull claw head 135 on the hydraulic pull-horse main body 1 is opposite to the normal direction of the workpiece to be disassembled, then the motor 42 is controlled to rotate forward or reversely according to the height of the workpiece to be disassembled, the steel wire rope 44 is driven to be lowered or recovered, and the height of the hydraulic pull-horse main body 1 is adjusted to a proper position.
Example 3:
the difference from example 2 is that:
the bracket 11 comprises a front plate 111, a rear plate 112, a fixed shaft sleeve 113, a fixed plate 115, a mounting plate 116, a guide shaft 117 and three connecting plates 114, wherein the front plate 111 and the rear plate 112 are arranged in parallel, the connecting plates 114 are uniformly arranged around the circumference of the main cylinder 12, two ends of each connecting plate 114 are respectively and vertically connected with the peripheries of the front plate 111 and the rear plate 112, one end of the main cylinder 12 is fixed with the circumference of a through hole formed in the middle of the front plate 111 through bolts, the other end of the main cylinder 12 extends towards the rear plate 112, one end of a main shaft 131 is arranged in the fixed shaft sleeve 113, the fixed shaft sleeve 113 is fixed with the circumference of a through hole formed in the middle of the rear plate 112 through bolts, and a movable shaft sleeve 139 is arranged between the other end of the main shaft 131 and the connecting frame 132;
the fixed plate 115 is located between two adjacent connecting plates 114, the end faces at the two ends of the top of the fixed plate 115 are respectively and vertically connected with the peripheries of the front plate 111 and the rear plate 112, the middle of the fixed plate 115 is movably connected with one end of the pull claw control cylinder 14, the bottom of the fixed plate 115 is vertically connected with the middle of the mounting plate 116, four corners of the mounting plate 116 are respectively and fixedly connected with the tops of a plurality of guide shafts 117, and the guide shafts 117 are always inserted and matched with the guide holes 31 formed in the bottom of the main frame 3 in the lifting adjustment process.
Example 4:
the difference from example 3 is that:
the lifting assembly 4 further comprises a fixed pulley 45 arranged at the top of the main frame 3, one end of the steel wire rope 44 is fixed on the winding drum 43, and the other end of the steel wire rope bypasses the fixed pulley 45 and is fixedly connected with the top of a connecting plate 114 arranged far away from the fixed plate 115.
Example 5:
the difference from example 3 is that:
the fixed plate 115, the connecting plate 114 have the same structure, and each of the fixed plate 118 and the connecting plate 114 comprises a first plate 118 and a second plate 119 which are arranged in parallel, one end faces of the first plate 118 and the second plate 119 are vertically connected with the periphery of the front plate 111, the other end faces of the first plate 118 and the second plate 119 are vertically connected with the periphery of the rear plate 112, the first connecting rod 133 is located between the first plate 118 and the second plate 119 in the same connecting plate 114, and the middle part of the first connecting rod 133 is movably connected with the first plate 118 and the second plate 119 through a pin shaft.
Example 6:
the difference from example 2 is that:
the hydraulic puller further comprises an electric control cabinet 5, and the electric control cabinet 5 is in signal connection with the main oil cylinder 12, the pulling claw control oil cylinder 14 and the motor 42.
Claims (10)
1. A hydraulic puller, characterized by: the hydraulic puller comprises a hydraulic puller Ma Zhuti (1) and a hydraulic pump station (2), the hydraulic puller Ma Zhuti (1) comprises a bracket (11), a main oil cylinder (12), a pulling claw (13) and a pulling claw control oil cylinder (14), the main oil cylinder (12) is positioned in the bracket (11), one end of the main oil cylinder (12) is fixedly connected with the middle part of one end of the bracket (11), the extendable end of a piston rod on the main oil cylinder (12) extends from one end of the main oil cylinder (12) to the outside of the middle part of one end of the bracket (11), the other end of the main oil cylinder (12) extends towards the other end of the bracket (11), the pulling claw (13) comprises a main shaft (131), a connecting frame (132) and a plurality of connecting rod assemblies uniformly distributed around the circumference of the bracket (11), each connecting rod assembly comprises a first connecting rod (133), a second connecting rod (134) and a pulling claw head (135), one end of the main shaft (131) is fixedly connected with the middle part of the other end of the bracket (11), the connecting frame (132) is sleeved outside the main shaft (131), the circumference of the connecting frame (132) is connected with the first connecting rod (133) and the middle part of the second connecting rod (133) movably connected with the first connecting rod (133, the other end of the second connecting rod (134) is movably connected with the pull claw head (135), the pull claw control oil cylinder (14) is positioned outside the support (11), one end of the pull claw control oil cylinder (14) is movably connected with the middle part of the support (11), the extendable end of the piston rod on the pull claw control oil cylinder (14) extends out of the other end of the pull claw control oil cylinder (14) and then is movably connected with the connecting frame (132), and the oil outlet end of the hydraulic pump station (2) is communicated with the oil inlet A (121), the oil outlet B (122) of the main oil cylinder (12) and the oil inlet C (141) and the oil outlet D (142) of the pull claw control oil cylinder (14).
2. A hydraulic puller as set forth in claim 1 wherein: one end of the pull claw head (135) is movably connected with the first connecting rod (133), one side, close to the first connecting rod (133), of the other end of the pull claw head (135) is provided with a workpiece clamping surface (136), the workpiece clamping surface (136) is provided with a copper buffer plate (137), and the other side of the other end of the pull claw head (135) is provided with a workpiece stop block (138).
3. A hydraulic puller according to claim 1 or 2, characterized in that: the hydraulic pressure draws the horse still to include main frame (3), lifting unit (4), hydraulic pressure draws Ma Zhuti (1) to be located main frame (3) inside, lifting unit (4) are including speed reducer (41), motor (42), reel (43), wire rope (44), speed reducer (41) are installed on motor (42), motor (42) are installed at main frame (3) top, and its output shaft cooperates with the one end transmission of reel (43), reel (43) rotatable install at main frame (3) top, the one end of wire rope (44) is fixed on reel (43), the top fixed connection of its other end and support (11).
4. A hydraulic puller as set forth in claim 3 wherein: the support (11) comprises a front plate (111), a rear plate (112), a fixed shaft sleeve (113) and a plurality of connecting plates (114), wherein the front plate (111) and the rear plate (112) are arranged in parallel, the connecting plates (114) are uniformly arranged around the circumference of the main oil cylinder (12), two ends of each connecting plate (114) are respectively and vertically connected with the peripheries of the front plate (111) and the rear plate (112), one end of the main oil cylinder (12) is fixed with the circumference of a through hole formed in the middle of the front plate (111) through bolts, the other end of the main oil cylinder (12) extends towards the rear plate (112), one end of the main shaft (131) is arranged inside the fixed shaft sleeve (113), the circumference of a through hole formed in the middle of the fixed shaft sleeve (113) and the rear plate (112) is fixed through bolts, and a movable shaft sleeve (139) is arranged between the other end of the main shaft (131) and the connecting frame (132).
5. A hydraulic puller as set forth in claim 4 wherein: the support (11) further comprises a fixing plate (115), a mounting plate (116) and a guide shaft (117), wherein the fixing plate (115) is positioned between two adjacent connecting plates (114), the end faces of the two ends of the top of the fixing plate (115) are respectively and vertically connected with the peripheries of the front plate (111) and the rear plate (112), the middle part of the fixing plate (115) is movably connected with one end of the pull claw control cylinder (14), the bottom of the fixing plate (115) is vertically connected with the middle part of the mounting plate (116), four corners of the mounting plate (116) are respectively and fixedly connected with the tops of the guide shafts (117), and the guide shafts (117) are in insertion fit with guide holes (31) formed in the bottom of the main frame (3).
6. A hydraulic puller as set forth in claim 5 wherein: the lifting assembly (4) further comprises a fixed pulley (45) arranged at the top of the main frame (3), one end of the steel wire rope (44) is fixed on the winding drum (43), and the other end of the steel wire rope bypasses the fixed pulley (45) and is fixedly connected with the top of a connecting plate (114) which is far away from the fixed plate (115).
7. A hydraulic puller according to claim 5 or 6, characterized in that: the fixed plate (115) and the connecting plate (114) are consistent in structure and comprise a first plate (118) and a second plate (119) which are arranged in parallel, one end face of the first plate (118) and one end face of the second plate (119) are vertically connected with the periphery of the front plate (111), the other end face of the first plate (118) and the other end face of the second plate (119) are vertically connected with the periphery of the rear plate (112), the first connecting rod (133) is located between the first plate (118) and the second plate (119) in the same connecting plate (114), and the middle of the first connecting rod (133) is movably connected with the first plate (118) and the second plate (119) through pin shafts.
8. A hydraulic puller as set forth in claim 3 wherein: the hydraulic puller further comprises an electric control cabinet (5), and the electric control cabinet (5) is in signal connection with the main oil cylinder (12), the pulling claw control oil cylinder (14) and the motor (42).
9. The control method of a hydraulic puller according to claim 1, wherein:
the control method sequentially comprises the following steps:
s1, controlling an oil outlet D (142) of a pull claw control oil cylinder (14) to feed oil and an oil inlet C (141) to discharge oil, wherein a piston rod on the pull claw control oil cylinder (14) is retracted at the moment, a connecting frame (132) is driven to move towards a rear plate (112) along a main shaft (131), and then one end of a second connecting rod (134) which is movably connected with a first connecting rod (133) is driven to lift, and one end of the second connecting rod (134) which is movably connected with a pull claw head (135) is driven to press downwards;
s2, when the pull claw head (135) is pressed down to clamp a workpiece to be disassembled, controlling the oil inlet A (121) and the oil outlet B (122) of the main oil cylinder (12) to discharge oil, and extending a piston rod on the main oil cylinder (12) at the moment;
s3, when a piston rod of the main oil cylinder (12) extends to be abutted against the workpiece main body, continuously controlling oil inlet D (142) and oil inlet C (141) of the pull claw control oil cylinder (14) to discharge oil, and continuously retracting the piston rod on the pull claw control oil cylinder (14) until the workpiece is detached from the workpiece main body;
s4, controlling oil outlet D (142) of the pull claw control oil cylinder (14) to discharge oil, oil inlet C (141) to discharge oil and oil inlet A (121) of the main oil cylinder (12) to discharge oil and oil outlet B (122) to discharge oil, so that a piston rod on the pull claw control oil cylinder (14) extends to an initial position, a piston rod on the main oil cylinder (12) retracts to the initial position, and in the extending process of the piston rod on the pull claw control oil cylinder (14), the piston rod on the pull claw control oil cylinder (14) drives a connecting frame (132) to move along a main shaft (131) in a direction away from a rear plate (112), and further drives one end of a second connecting rod (134) movably connected with a first connecting rod (133) to be pressed downwards, and one end of the second connecting rod (134) movably connected with a pull claw head (135) to be lifted, so that a workpiece is loosened.
10. The control method of a hydraulic puller according to claim 9, wherein:
the hydraulic pulling horse further comprises a main frame (3) and a lifting assembly (4), the hydraulic pulling Ma Zhuti (1) is located inside the main frame (3), the lifting assembly (4) comprises a speed reducer (41), a motor (42), a winding drum (43) and a steel wire rope (44), the speed reducer (41) is installed on the motor (42), the motor (42) is installed at the top of the main frame (3), an output shaft of the motor is in transmission fit with one end of the winding drum (43), the winding drum (43) is rotatably installed at the top of the main frame (3), one end of the steel wire rope (44) is fixed on the winding drum (43), and the other end of the steel wire rope is fixedly connected with the top of the support (11);
the control method further comprises position lifting adjustment, wherein the position lifting adjustment specifically comprises the following steps:
before step S1, the whole frame is moved to the front of a workpiece to be disassembled, a pull claw head (135) on a hydraulic pull Ma Zhuti (1) is opposite to the normal direction of the workpiece to be disassembled, then a motor (42) is controlled to rotate forward or reversely according to the height of the workpiece to be disassembled, a steel wire rope (44) is driven to be lowered or recovered, and the height of the hydraulic pull Ma Zhuti (1) is adjusted to a proper position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310081895.5A CN116276789A (en) | 2023-02-08 | 2023-02-08 | Hydraulic puller and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310081895.5A CN116276789A (en) | 2023-02-08 | 2023-02-08 | Hydraulic puller and control method thereof |
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| Publication Number | Publication Date |
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| CN116276789A true CN116276789A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310081895.5A Pending CN116276789A (en) | 2023-02-08 | 2023-02-08 | Hydraulic puller and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117773835A (en) * | 2024-02-26 | 2024-03-29 | 常州市钧达轴承有限公司 | Reliably-positioned bearing puller and working method thereof |
-
2023
- 2023-02-08 CN CN202310081895.5A patent/CN116276789A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117773835A (en) * | 2024-02-26 | 2024-03-29 | 常州市钧达轴承有限公司 | Reliably-positioned bearing puller and working method thereof |
| CN117773835B (en) * | 2024-02-26 | 2024-04-23 | 常州市钧达轴承有限公司 | Reliably-positioned bearing puller and working method thereof |
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