CN109812463B - Mechanical locking method for end part of oil cylinder - Google Patents
Mechanical locking method for end part of oil cylinder Download PDFInfo
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- CN109812463B CN109812463B CN201910194754.8A CN201910194754A CN109812463B CN 109812463 B CN109812463 B CN 109812463B CN 201910194754 A CN201910194754 A CN 201910194754A CN 109812463 B CN109812463 B CN 109812463B
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Abstract
The invention discloses a mechanical locking method for an end part of an oil cylinder, which belongs to the technical field of hydraulic transmission and is characterized by comprising the following steps of: a. installing a locking platform of the oil cylinder end mechanical locking device on the end of the oil cylinder body; b. the movable cylindrical hub on the lower piston rod is moved upward until its end surface contacts with the end surface of the fixed cylindrical hub on the upper piston rod; c. the driving part drives the movable locking sleeve to move downwards, and under the action of the matching surface between the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by using the contact surface between them and the fixed cylindrical hub as hinging point, and the clamping jaws are closed to connect them together so as to complete the mechanical locking of the end portion of oil cylinder. The invention adopts the movable locking sleeve to control the clamping jaws which are uniformly distributed in the circumferential direction to lock, drives the locking platform to move up and down by the driving cylinder, adjusts the relative positions of the movable locking sleeve and the fixed cylindrical hub, realizes the fine adjustment of the locking position, and has simple operation in the whole locking process, firm locking and quick unlocking.
Description
Technical Field
The invention relates to the technical field of hydraulic transmission, in particular to a mechanical locking method for an end part of an oil cylinder.
Background
A hydraulic cylinder is an actuator which is driven and can bear a large load, and it is generally required to be capable of stably bearing an external load for a long time without any displacement after the movement is stopped, that is, it is required to have a lock function.
The hydraulic locking loop can not solve the problem of internal leakage of the hydraulic oil cylinder, and the internal leakage can lead the piston rod to slide down at a set position, so the hydraulic oil cylinder can only be applied to occasions with low locking and positioning requirements.
Aiming at the locking of the end part of the piston rod with high requirements, the oil cylinder is locked by a locking loop of the hydraulic system, so that the locking function of the piston rod at a set position cannot be realized safely and reliably. Therefore, it is common to employ a mechanical locking mechanism to meet this requirement. The existing common mechanical locking still has the problems of complex structure, higher requirement on installation space, short service life, incapability of finely adjusting the locking position and low reliability.
Chinese patent publication No. CN 203570753U, published as 2014, 04/30 discloses a safety locking device suitable for a hydraulic cylinder, which comprises a brake lock cylinder body, a locking sleeve, a locking piston, a spring set and an unlocking oil passage, and is characterized in that: the two ends of the brake lock cylinder body are respectively provided with an unlocking end cover and a brake end cover, and the central holes of the unlocking end cover and the brake end cover are in dynamic sealing fit with the piston rod; a spring group is arranged between the brake end cover and the brake lock cylinder body; the unlocking end cover is provided with an unlocking oil way, a locking piston is arranged between the spring group and the unlocking oil way, and a locking sleeve is arranged between the locking piston and the piston rod in a movable fit manner. The safety locking device disclosed in this patent document is suitable for a hydraulic cylinder, and due to an unreasonable structural design, the locking force uniformity is poor, so that the locking reliability is low, and the locking position cannot be finely adjusted.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a mechanical locking method for the end part of an oil cylinder, the invention adopts a movable locking sleeve to control clamping jaws which are uniformly arranged in the circumferential direction to lock, the relative positions of the movable locking sleeve and a fixed cylindrical arc are adjusted by driving a cylinder to drive a locking platform to move up and down, and the fine adjustment of the locking position is realized, the operation of the whole locking process is simple, the locking is firm, and the unlocking is quick.
The invention is realized by the following technical scheme:
a mechanical locking method for an end part of an oil cylinder is characterized by comprising the following steps:
a. installing a locking platform of a mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body, wherein an upper piston rod extends into the oil cylinder body;
b. the piston in the cylinder is pushed to move the movable cylindrical hub upward until the end surface of the movable cylindrical hub on the lower piston rod contacts with the end surface of the fixed cylindrical hub on the upper piston rod;
c. the driving part drives the movable locking sleeve installed inside the cylinder body to move downwards, and under the action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by using the contact surface with the fixed cylindrical hub as a hinge point, the clamping jaws are closed, and the closed clamping jaws connect the fixed cylindrical hub and the movable cylindrical hub together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device for the end part of the oil cylinder comprises a locking platform arranged above an oil cylinder body, a piston, an upper piston rod and a lower piston rod are arranged in the oil cylinder body, a flange plate is arranged on the outer wall of the oil cylinder body, the lower piston rod is connected with the piston, the upper end of the upper piston rod penetrates through an end cover plate of the oil cylinder body and is connected with the locking platform, the lower end of the upper piston rod is connected with a fixed cylindrical foot, a movable cylindrical foot is connected with the lower piston rod, a movable locking sleeve is arranged in the oil cylinder body and is positioned above the piston, clamping jaws used for clamping the fixed cylindrical foot and the movable cylindrical foot are uniformly arranged in the circumferential direction of the movable locking sleeve, a driving piece used for driving the movable locking sleeve and a driving cylinder used for driving the locking platform to move are fixedly connected onto the locking platform, and a cylinder.
The driving piece comprises a sleeve, a screw rod, a hollow pin shaft, a key and a hand wheel, the hollow pin shaft is installed in the sleeve, an external thread is arranged on the screw rod, an internal thread is arranged on the hollow pin shaft, the screw rod is in threaded connection with the hollow pin shaft, the hand wheel is connected with the screw rod through the key, and the hollow pin shaft is fixedly connected with the movable lock sleeve.
The sleeve comprises a first end portion, a cylinder body and a second end portion, the first end portion, the cylinder body and the second end portion are integrally formed, the cross sections of the first end portion and the second end portion are circular, the pipe diameters of the first end portion and the second end portion are the same, and the pipe diameter of the first end portion is larger than that of the cylinder body.
The screw rod is characterized in that an end cover is arranged on the sleeve, the end cover is fixedly connected with the first end portion, a gland is fixedly connected to the end cover, a first groove is formed in the end cover, a second groove is formed in the gland, the first groove and the second groove enclose a containing cavity with a square cross section, a guide sleeve is arranged in the containing cavity, and the guide sleeve is sleeved on the screw rod.
And a connecting nut is fixed in the hollow pin shaft, an internal thread is formed on the connecting nut, and the connecting nut is in threaded connection with the screw rod.
Two annular guide belts are arranged between the sleeve and the hollow pin shaft, and the two annular guide belts are sleeved on the hollow pin shaft.
The driving parts are two, the two driving parts are symmetrically arranged along the upper piston rod, the two driving cylinders are symmetrically arranged along the upper piston rod.
A first O-shaped sealing ring and a second O-shaped sealing ring are arranged between the end cover plate and the hollow pin shaft, the first O-shaped sealing ring and the second O-shaped sealing ring are sleeved on the hollow pin shaft, and the first O-shaped sealing ring is located above the second O-shaped sealing ring.
The utility model discloses a hollow pin shaft's end fixedly connected with fulcrum bar seat, the first proximity switch of fixedly connected with on the first end, fixedly connected with second proximity switch on the second end, first proximity switch and second proximity switch are located telescopic same one side, the tip fixedly connected with fulcrum bar seat of hollow pin shaft, fixedly connected with response piece on the fulcrum bar seat, the response piece is located between first proximity switch and the second proximity switch, the perpendicular distance of first proximity switch and barrel is the same with the perpendicular distance of second proximity switch and barrel, the perpendicular distance of response piece and barrel is the same with the perpendicular distance of first proximity switch and barrel.
The working principle of the invention is as follows:
oil cylinder locking work flow:
the movable lock sleeve is in unlocking position, the jaws are in open state, the hydraulic system is used to control the movable cylindrical hub on the lower piston rod to move upward slowly, and when the end surface of the movable cylindrical hub on the lower piston rod is contacted with the end surface of the fixed cylindrical hub on the upper piston rod, the hydraulic system stops operating. The driving part drives the movable locking sleeve to move downwards, and under the mutual action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by using the contact surface of the clamping jaws and the fixed cylindrical hub as a hinged point, the clamping jaws are gradually closed, and the closed clamping jaws connect the fixed cylindrical hub and the movable cylindrical hub together to realize the mechanical locking of the upper piston rod and the lower piston rod.
Oil cylinder unlocking work flow:
the movable locking sleeve and the jaw are in closed locking state, the driving part drives the movable locking sleeve to move upwards, under the mutual action of the matching surfaces of the movable locking sleeve and the jaw, the jaw rotates clockwise with the contact surface with the fixed cylindrical hub as a hinged point, the jaw is gradually opened, the upper piston rod is separated from the lower piston rod, the movable cylindrical hub on the lower piston rod is controlled to move downwards by the hydraulic system, and the movable cylindrical hub is separated from the jaw and is in unlocking state.
The beneficial effects of the invention are mainly shown in the following aspects:
firstly, the invention 'a', a locking platform of a mechanical locking device at the end part of an oil cylinder is arranged on the end part of an oil cylinder body, and an upper piston rod extends into the oil cylinder body; b. the piston in the cylinder is pushed to move the movable cylindrical hub upward until the end surface of the movable cylindrical hub on the lower piston rod contacts with the end surface of the fixed cylindrical hub on the upper piston rod; c. the movable locking sleeve installed inside the cylinder body is driven by the driving part to move downwards, under the action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by taking the contact surface with the fixed cylindrical shell as a hinging point, the clamping jaws are closed, the fixed cylindrical shell and the movable cylindrical shell are connected together by the closed clamping jaws to complete mechanical locking of the end part of the cylinder, the clamping jaws uniformly distributed in the circumferential direction are controlled by the movable locking sleeve to lock, the locking table is driven to move up and down by driving the driving cylinder, the relative positions of the movable locking sleeve and the fixed cylindrical shell are adjusted, fine adjustment of a locking position is realized, the whole locking process is simple in operation, the locking is firm.
Secondly, in the invention, the lower end of the upper piston rod is connected with the fixed cylindrical shell, the lower piston rod is connected with the movable cylindrical shell, the oil cylinder body is internally provided with a movable locking sleeve which is positioned above the piston, the circumference of the movable locking sleeve is evenly provided with clamping jaws for clamping the fixed cylindrical shell and the movable cylindrical shell, the locking platform is fixedly connected with a driving piece for driving the movable locking sleeve and a driving cylinder for driving the locking platform to move, the cylinder shaft of the driving cylinder is fixedly connected with a flange plate, when in use, the movable locking sleeve is driven by the driving piece to move downwards, under the mutual action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by taking the contact surface with the fixed cylindrical shell as a hinge point, the clamping jaws are gradually closed, the closed clamping jaws connect the fixed cylindrical shell and the movable cylindrical shell together, thereby realizing the mechanical locking of the upper piston rod and the lower piston rod, the locking force is, the locking table is driven to move up and down by the driving cylinder, the relative positions of the movable lock sleeve and the fixed cylindrical hub are adjusted, and the fine adjustment of the locking position can be realized; during unlocking, the movable locking sleeve is driven to move upwards by the driving piece, the clamping jaws rotate clockwise by taking the contact surface of the clamping jaws and the fixed cylindrical hub as a hinged point under the interaction of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws are gradually opened, the upper piston rod is separated from the lower piston rod, and the unlocking is finished; compared with the prior art, the locking device has the characteristics of high locking reliability, quick unlocking and good applicability.
The driving piece comprises a sleeve, a screw rod, a hollow pin shaft, a key and a hand wheel, wherein the hollow pin shaft is arranged in the sleeve, an external thread is arranged on the screw rod, an internal thread is arranged on the hollow pin shaft, the screw rod is in threaded connection with the hollow pin shaft, the hand wheel is connected with the screw rod through the key, and the hollow pin shaft is fixedly connected with the movable lock sleeve.
The sleeve comprises a first end part, a cylinder body and a second end part, the first end part, the cylinder body and the second end part are integrally formed, the cross sections of the first end part and the second end part are circular, the pipe diameters of the first end part and the second end part are the same, the pipe diameter of the first end part is larger than that of the cylinder body, the sleeve is conveniently connected with the locking platform, and the installation convenience is improved.
And fifthly, the sleeve is provided with an end cover which is fixedly connected with the first end part, the end cover is fixedly connected with a gland, the end cover is provided with a first groove, the gland is provided with a second groove, the first groove and the second groove enclose a containing cavity with a square cross section, a guide sleeve is arranged in the containing cavity and sleeved on the screw rod, the guide sleeve can enable the screw rod to rotate more stably without shaking, and further the movable locking sleeve moves downwards or upwards more smoothly and stably, so that the locking reliability is improved.
And sixthly, a connecting nut is fixed in the hollow pin shaft, an internal thread is formed on the connecting nut, and the connecting nut is in threaded connection with the screw rod, so that the abrasion of the screw rod on the hollow pin shaft can be reduced, and the long-term use stability of the whole mechanical locking device is ensured.
And seventhly, two annular guide belts are arranged between the sleeve and the hollow pin shaft, and are sleeved on the hollow pin shaft, so that the hollow pin shaft can be prevented from shaking in the moving process, the hollow pin shaft is kept to stably operate, and the locking reliability is improved.
Eighthly, the two driving pieces are arranged, the two driving pieces are symmetrically arranged along the upper piston rod, the two driving cylinders are symmetrically arranged along the upper piston rod, and therefore the moving smoothness of the movable locking sleeve can be further improved, and the locking stability is guaranteed.
And a first O-shaped sealing ring and a second O-shaped sealing ring are arranged between the end cover plate and the hollow pin shaft, the first O-shaped sealing ring and the second O-shaped sealing ring are sleeved on the hollow pin shaft, and the first O-shaped sealing ring is positioned above the second O-shaped sealing ring, so that the hollow pin shaft can be further prevented from shaking, and the moving stability of the movable locking sleeve is further improved.
The first end part is fixedly connected with a first proximity switch, the second end part is fixedly connected with a second proximity switch, the first proximity switch and the second proximity switch are positioned on the same side of the sleeve, the end part of the hollow pin shaft is fixedly connected with a support rod seat, an induction block is fixedly connected on the support rod seat and positioned between the first proximity switch and the second proximity switch, the vertical distance between the first proximity switch and the cylinder body is the same as that between the second proximity switch and the cylinder body, the vertical distance between the induction block and the cylinder body is the same as that between the first proximity switch and the cylinder body, and when the induction block moves upwards along with the hollow pin shaft to trigger the first proximity switch, the limit value of the upward movement of the hollow pin shaft can be detected; when the induction block moves downwards along with the hollow pin shaft to trigger the second proximity switch, the limit value of the downward movement of the hollow pin shaft can be detected; when the hollow pin shaft moves downwards to a limit value, the clamping jaw is in a complete locking state, and when the hollow pin shaft moves upwards to the limit value, the clamping jaw is in a complete opening state, so that the locking and unlocking accuracy can be further improved.
Drawings
The invention will be further described in detail with reference to the drawings and the detailed description, in which:
FIG. 1 is a schematic structural diagram of a mechanical locking device for an end of a cylinder according to the present invention;
FIG. 2 is a schematic view of the driving member of the present invention;
the labels in the figure are: 1. the cylinder body, 2, the locking platform, 3, the piston, 4, the upper piston rod, 5, the lower piston rod, 6, the flange plate, 7, the end cover plate, 8, the fixed cylindrical housing, 9, the movable cylindrical housing, 10, the movable locking sleeve, 11, the jaw, 12, the driving piece, 13, the driving cylinder, 14, the sleeve, 15, the lead screw, 16, the hollow pin shaft, 17, the key, 18, the hand wheel, 19, the first end part, 20, the cylinder body, 21, the second end part, 22, the end cover, 23, the gland, 24, the accommodating cavity, 25, the guide sleeve, 26, the connecting nut, 27, the annular guide belt, 28, the first O-shaped seal ring, 29, the second O-shaped seal ring, 30, the first proximity switch, 31, the second proximity switch, 32, the supporting rod seat, 33 and the induction block.
Detailed Description
Example 1
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The embodiment is the most basic embodiment, and the method comprises the following steps that (a) a locking platform of a mechanical locking device at the end part of an oil cylinder is installed on the end part of an oil cylinder body, and an upper piston rod extends into the oil cylinder body; b. the piston in the cylinder is pushed to move the movable cylindrical hub upward until the end surface of the movable cylindrical hub on the lower piston rod contacts with the end surface of the fixed cylindrical hub on the upper piston rod; c. the movable locking sleeve installed inside the cylinder body is driven by the driving part to move downwards, under the action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by taking the contact surface with the fixed cylindrical shell as a hinging point, the clamping jaws are closed, the fixed cylindrical shell and the movable cylindrical shell are connected together by the closed clamping jaws to complete mechanical locking of the end part of the cylinder, the clamping jaws uniformly distributed in the circumferential direction are controlled by the movable locking sleeve to lock, the locking table is driven to move up and down by driving the driving cylinder, the relative positions of the movable locking sleeve and the fixed cylindrical shell are adjusted, fine adjustment of a locking position is realized, the whole locking process is simple in operation, the locking is firm.
Example 2
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device at the end part of the oil cylinder comprises a locking platform 2 arranged above an oil cylinder body 1, a piston 3 is arranged in the oil cylinder body 1, an upper piston rod 4 and a lower piston rod 5, a flange plate 6 is arranged on the outer wall of the oil cylinder body 1, the lower piston rod 5 is connected with a piston 3, the upper end of the upper piston rod 4 penetrates through an end cover plate 7 of the oil cylinder body 1 and is connected with a locking platform 2, the lower end of the upper piston rod 4 is connected with a fixed cylindrical arc 8, a movable cylindrical arc 9 is connected with the lower piston rod 5, a movable locking sleeve 10 is installed in the oil cylinder body 1, the movable locking sleeve 10 is positioned above the piston 3, clamping claws 11 used for clamping the fixed cylindrical arc 8 and the movable cylindrical arc 9 are uniformly arranged in the circumferential direction of the movable locking sleeve 10, a driving piece 12 used for driving the movable locking sleeve 10 and a driving cylinder 13 used for driving the locking platform 2 to move are fixedly connected with the locking platform 2, and a cylinder shaft of the driving cylinder 13 is fixedly.
This embodiment is a preferred embodiment, the lower end of the upper piston rod is connected with the fixed cylindrical hub, the lower piston rod is connected with the movable cylindrical hub, the oil cylinder body is internally provided with a movable locking sleeve positioned above the piston, the movable locking sleeve is uniformly provided with claws for clamping the fixed cylindrical hub and the movable cylindrical hub in the circumferential direction, the locking table is fixedly connected with a driving piece for driving the movable locking sleeve and a driving cylinder for driving the locking table to move, the cylinder shaft of the driving cylinder is fixedly connected with the flange, when in use, the movable locking sleeve is driven by the driving piece to move downwards, under the interaction of the matching surfaces of the movable locking sleeve and the claws, the claws rotate anticlockwise by taking the contact surface with the fixed cylindrical hub as a hinge point, the claws are gradually closed, the closed claws connect the fixed cylindrical hub and the movable cylindrical hub together, thereby realizing the mechanical locking of the upper piston rod and the lower piston rod, and the locking force is uniform, the clamping is more reliable, the driving cylinder drives the locking table to move up and down, the relative positions of the movable lock sleeve and the fixed cylindrical shell are adjusted, and the fine adjustment of the locking position can be realized; during unlocking, the movable locking sleeve is driven to move upwards by the driving piece, the clamping jaws rotate clockwise by taking the contact surface of the clamping jaws and the fixed cylindrical hub as a hinged point under the interaction of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws are gradually opened, the upper piston rod is separated from the lower piston rod, and the unlocking is finished; compared with the prior art, the locking device has the characteristics of high locking reliability, quick unlocking and good applicability.
Example 3
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device at the end part of the oil cylinder comprises a locking platform 2 arranged above an oil cylinder body 1, a piston 3 is arranged in the oil cylinder body 1, an upper piston rod 4 and a lower piston rod 5, a flange plate 6 is arranged on the outer wall of the oil cylinder body 1, the lower piston rod 5 is connected with a piston 3, the upper end of the upper piston rod 4 penetrates through an end cover plate 7 of the oil cylinder body 1 and is connected with a locking platform 2, the lower end of the upper piston rod 4 is connected with a fixed cylindrical arc 8, a movable cylindrical arc 9 is connected with the lower piston rod 5, a movable locking sleeve 10 is installed in the oil cylinder body 1, the movable locking sleeve 10 is positioned above the piston 3, clamping claws 11 used for clamping the fixed cylindrical arc 8 and the movable cylindrical arc 9 are uniformly arranged in the circumferential direction of the movable locking sleeve 10, a driving piece 12 used for driving the movable locking sleeve 10 and a driving cylinder 13 used for driving the locking platform 2 to move are fixedly connected with the locking platform 2, and a cylinder shaft of the driving cylinder 13 is fixedly.
The driving piece 12 comprises a sleeve 14, a screw rod 15, a hollow pin shaft 16, a key 17 and a hand wheel 18, wherein the hollow pin shaft 16 is installed in the sleeve 14, an external thread is arranged on the screw rod 15, an internal thread is arranged on the hollow pin shaft 16, the screw rod 15 is in threaded connection with the hollow pin shaft 16, the hand wheel 18 is connected with the screw rod 15 through the key 17, and the hollow pin shaft 16 is fixedly connected with the movable lock sleeve 10.
The embodiment is another preferred embodiment, and the driving piece includes a sleeve, a screw rod, a hollow pin, a key, and a hand wheel, the hollow pin is installed in the sleeve, an external thread is provided on the screw rod, an internal thread is provided on the hollow pin, the screw rod and the hollow pin are connected through a thread, the hand wheel is connected through a key and the screw rod, the hollow pin is fixedly connected with the movable lock sleeve, and the driving piece adopting this mechanical structure can improve driving stability and reliability, so that the movable lock sleeve moves downwards or upwards more smoothly and stably, and further, the locking reliability is effectively ensured.
Example 4
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device at the end part of the oil cylinder comprises a locking platform 2 arranged above an oil cylinder body 1, a piston 3 is arranged in the oil cylinder body 1, an upper piston rod 4 and a lower piston rod 5, a flange plate 6 is arranged on the outer wall of the oil cylinder body 1, the lower piston rod 5 is connected with a piston 3, the upper end of the upper piston rod 4 penetrates through an end cover plate 7 of the oil cylinder body 1 and is connected with a locking platform 2, the lower end of the upper piston rod 4 is connected with a fixed cylindrical arc 8, a movable cylindrical arc 9 is connected with the lower piston rod 5, a movable locking sleeve 10 is installed in the oil cylinder body 1, the movable locking sleeve 10 is positioned above the piston 3, clamping claws 11 used for clamping the fixed cylindrical arc 8 and the movable cylindrical arc 9 are uniformly arranged in the circumferential direction of the movable locking sleeve 10, a driving piece 12 used for driving the movable locking sleeve 10 and a driving cylinder 13 used for driving the locking platform 2 to move are fixedly connected with the locking platform 2, and a cylinder shaft of the driving cylinder 13 is fixedly.
The driving piece 12 comprises a sleeve 14, a screw rod 15, a hollow pin shaft 16, a key 17 and a hand wheel 18, wherein the hollow pin shaft 16 is installed in the sleeve 14, an external thread is arranged on the screw rod 15, an internal thread is arranged on the hollow pin shaft 16, the screw rod 15 is in threaded connection with the hollow pin shaft 16, the hand wheel 18 is connected with the screw rod 15 through the key 17, and the hollow pin shaft 16 is fixedly connected with the movable lock sleeve 10.
The sleeve 14 comprises a first end portion 19, a cylinder body 20 and a second end portion 21, the first end portion 19, the cylinder body 20 and the second end portion 21 are integrally formed, the cross sections of the first end portion 19 and the second end portion 21 are circular, the pipe diameters of the first end portion 19 and the second end portion 21 are the same, and the pipe diameter of the first end portion 19 is larger than that of the cylinder body 20.
The sleeve 14 is provided with an end cover 22, the end cover 22 is fixedly connected with the first end portion 19, the end cover 22 is fixedly connected with a gland 23, the end cover 22 is provided with a first groove, the gland 23 is provided with a second groove, the first groove and the second groove enclose a containing cavity 24 with a square cross section, a guide sleeve 25 is arranged in the containing cavity 24, and the guide sleeve 25 is sleeved on the screw rod 15.
The present embodiment is another preferred embodiment, and the sleeve includes first end, barrel and second end, and first end, barrel and second end integrated into one piece, the cross section of first end and second end is circular, and the pipe diameter of first end is the same with the pipe diameter of second end, and the pipe diameter of first end is greater than the pipe diameter of barrel, is convenient for sleeve and locking platform's connection, improves the installation convenience.
The sleeve is provided with an end cover, the end cover is fixedly connected with the first end portion, a gland is fixedly connected to the end cover, a first groove is formed in the end cover, a second groove is formed in the gland, the first groove and the second groove enclose a containing cavity with a square cross section, a guide sleeve is arranged in the containing cavity and sleeved on the lead screw, the guide sleeve can enable the lead screw to rotate more stably and does not shake, and therefore the movable lock sleeve moves downwards or moves upwards more smoothly and stably, and the locking reliability is improved.
Example 5
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device at the end part of the oil cylinder comprises a locking platform 2 arranged above an oil cylinder body 1, a piston 3 is arranged in the oil cylinder body 1, an upper piston rod 4 and a lower piston rod 5, a flange plate 6 is arranged on the outer wall of the oil cylinder body 1, the lower piston rod 5 is connected with a piston 3, the upper end of the upper piston rod 4 penetrates through an end cover plate 7 of the oil cylinder body 1 and is connected with a locking platform 2, the lower end of the upper piston rod 4 is connected with a fixed cylindrical arc 8, a movable cylindrical arc 9 is connected with the lower piston rod 5, a movable locking sleeve 10 is installed in the oil cylinder body 1, the movable locking sleeve 10 is positioned above the piston 3, clamping claws 11 used for clamping the fixed cylindrical arc 8 and the movable cylindrical arc 9 are uniformly arranged in the circumferential direction of the movable locking sleeve 10, a driving piece 12 used for driving the movable locking sleeve 10 and a driving cylinder 13 used for driving the locking platform 2 to move are fixedly connected with the locking platform 2, and a cylinder shaft of the driving cylinder 13 is fixedly.
The driving piece 12 comprises a sleeve 14, a screw rod 15, a hollow pin shaft 16, a key 17 and a hand wheel 18, wherein the hollow pin shaft 16 is installed in the sleeve 14, an external thread is arranged on the screw rod 15, an internal thread is arranged on the hollow pin shaft 16, the screw rod 15 is in threaded connection with the hollow pin shaft 16, the hand wheel 18 is connected with the screw rod 15 through the key 17, and the hollow pin shaft 16 is fixedly connected with the movable lock sleeve 10.
The sleeve 14 comprises a first end portion 19, a cylinder body 20 and a second end portion 21, the first end portion 19, the cylinder body 20 and the second end portion 21 are integrally formed, the cross sections of the first end portion 19 and the second end portion 21 are circular, the pipe diameters of the first end portion 19 and the second end portion 21 are the same, and the pipe diameter of the first end portion 19 is larger than that of the cylinder body 20.
The sleeve 14 is provided with an end cover 22, the end cover 22 is fixedly connected with the first end portion 19, the end cover 22 is fixedly connected with a gland 23, the end cover 22 is provided with a first groove, the gland 23 is provided with a second groove, the first groove and the second groove enclose a containing cavity 24 with a square cross section, a guide sleeve 25 is arranged in the containing cavity 24, and the guide sleeve 25 is sleeved on the screw rod 15.
A connecting nut 26 is fixed in the hollow pin shaft 16, an internal thread is formed on the connecting nut 26, and the connecting nut 26 is in threaded connection with the screw rod 15.
Two annular guide belts 27 are arranged between the sleeve 14 and the hollow pin shaft 16, and the two annular guide belts 27 are sleeved on the hollow pin shaft 16.
In another preferred embodiment, the hollow pin shaft is internally fixed with a connecting nut, the connecting nut is provided with an internal thread, and the connecting nut and the screw rod are connected through the thread, so that the abrasion of the screw rod on the hollow pin shaft can be reduced, and the long-term use stability of the whole mechanical locking device can be guaranteed.
Two annular guide belts are arranged between the sleeve and the hollow pin shaft and are sleeved on the hollow pin shaft, so that the hollow pin shaft can be prevented from shaking in the moving process, the hollow pin shaft is kept to stably operate, and the locking reliability is improved.
Example 6
A mechanical locking method for an end part of an oil cylinder comprises the following steps:
a. installing a locking platform 2 of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body 1, and extending an upper piston rod 4 into the oil cylinder body 1;
b. the piston 3 in the oil cylinder 1 is pushed to move the movable cylindrical hub 9 on the lower piston rod 5 upward until the end surface of the movable cylindrical hub 9 on the lower piston rod 5 contacts with the end surface of the fixed cylindrical hub 8 on the upper piston rod 4;
c. the driving piece 12 drives the movable locking sleeve 10 installed inside the cylinder body 1 to move downwards, and under the action of the matching surfaces of the movable locking sleeve 10 and the claws 11, the claws 11 rotate anticlockwise by taking the contact surface with the fixed arc 8 as the hinging point, the claws 11 are closed, and the closed claws 11 connect the fixed arc 8 and the movable arc 9 together to complete the mechanical locking of the end part of the oil cylinder.
The mechanical locking device at the end part of the oil cylinder comprises a locking platform 2 arranged above an oil cylinder body 1, a piston 3 is arranged in the oil cylinder body 1, an upper piston rod 4 and a lower piston rod 5, a flange plate 6 is arranged on the outer wall of the oil cylinder body 1, the lower piston rod 5 is connected with a piston 3, the upper end of the upper piston rod 4 penetrates through an end cover plate 7 of the oil cylinder body 1 and is connected with a locking platform 2, the lower end of the upper piston rod 4 is connected with a fixed cylindrical arc 8, a movable cylindrical arc 9 is connected with the lower piston rod 5, a movable locking sleeve 10 is installed in the oil cylinder body 1, the movable locking sleeve 10 is positioned above the piston 3, clamping claws 11 used for clamping the fixed cylindrical arc 8 and the movable cylindrical arc 9 are uniformly arranged in the circumferential direction of the movable locking sleeve 10, a driving piece 12 used for driving the movable locking sleeve 10 and a driving cylinder 13 used for driving the locking platform 2 to move are fixedly connected with the locking platform 2, and a cylinder shaft of the driving cylinder 13 is fixedly.
The driving piece 12 comprises a sleeve 14, a screw rod 15, a hollow pin shaft 16, a key 17 and a hand wheel 18, wherein the hollow pin shaft 16 is installed in the sleeve 14, an external thread is arranged on the screw rod 15, an internal thread is arranged on the hollow pin shaft 16, the screw rod 15 is in threaded connection with the hollow pin shaft 16, the hand wheel 18 is connected with the screw rod 15 through the key 17, and the hollow pin shaft 16 is fixedly connected with the movable lock sleeve 10.
The sleeve 14 comprises a first end portion 19, a cylinder body 20 and a second end portion 21, the first end portion 19, the cylinder body 20 and the second end portion 21 are integrally formed, the cross sections of the first end portion 19 and the second end portion 21 are circular, the pipe diameters of the first end portion 19 and the second end portion 21 are the same, and the pipe diameter of the first end portion 19 is larger than that of the cylinder body 20.
The sleeve 14 is provided with an end cover 22, the end cover 22 is fixedly connected with the first end portion 19, the end cover 22 is fixedly connected with a gland 23, the end cover 22 is provided with a first groove, the gland 23 is provided with a second groove, the first groove and the second groove enclose a containing cavity 24 with a square cross section, a guide sleeve 25 is arranged in the containing cavity 24, and the guide sleeve 25 is sleeved on the screw rod 15.
A connecting nut 26 is fixed in the hollow pin shaft 16, an internal thread is formed on the connecting nut 26, and the connecting nut 26 is in threaded connection with the screw rod 15.
Two annular guide belts 27 are arranged between the sleeve 14 and the hollow pin shaft 16, and the two annular guide belts 27 are sleeved on the hollow pin shaft 16.
The number of the driving parts 12 is two, the two driving parts 12 are symmetrically arranged along the upper piston rod 4, the number of the driving cylinders 13 is two, and the two driving cylinders 13 are symmetrically arranged along the upper piston rod 4.
A first O-shaped sealing ring 28 and a second O-shaped sealing ring 29 are arranged between the end cover plate 7 and the hollow pin shaft 16, the first O-shaped sealing ring 28 and the second O-shaped sealing ring 29 are sleeved on the hollow pin shaft 16, and the first O-shaped sealing ring 28 is positioned above the second O-shaped sealing ring 29.
The first end portion 19 is fixedly connected with a first proximity switch 30, the second end portion 21 is fixedly connected with a second proximity switch 31, the first proximity switch 30 and the second proximity switch 31 are located on the same side of the sleeve 14, the end portion of the hollow pin shaft 16 is fixedly connected with a support rod seat 32, the support rod seat 32 is fixedly connected with an induction block 33, the induction block 33 is located between the first proximity switch 30 and the second proximity switch 31, the vertical distance between the first proximity switch 30 and the barrel body 20 is the same as the vertical distance between the second proximity switch 31 and the barrel body 20, and the vertical distance between the induction block 33 and the barrel body 20 is the same as the vertical distance between the first proximity switch 30 and the barrel body 20.
The embodiment is a best mode, "a, a locking platform of the mechanical locking device at the end part of the oil cylinder is arranged on the end part of the oil cylinder body, and an upper piston rod extends into the oil cylinder body; b. the piston in the cylinder is pushed to move the movable cylindrical hub upward until the end surface of the movable cylindrical hub on the lower piston rod contacts with the end surface of the fixed cylindrical hub on the upper piston rod; c. the movable locking sleeve installed inside the cylinder body is driven by the driving part to move downwards, under the action of the matching surfaces of the movable locking sleeve and the clamping jaws, the clamping jaws rotate anticlockwise by taking the contact surface with the fixed cylindrical shell as a hinging point, the clamping jaws are closed, the fixed cylindrical shell and the movable cylindrical shell are connected together by the closed clamping jaws to complete mechanical locking of the end part of the cylinder, the clamping jaws uniformly distributed in the circumferential direction are controlled by the movable locking sleeve to lock, the locking table is driven to move up and down by driving the driving cylinder, the relative positions of the movable locking sleeve and the fixed cylindrical shell are adjusted, fine adjustment of a locking position is realized, the whole locking process is simple in operation, the locking is firm.
The driving pieces are two, the two driving pieces are symmetrically arranged along the upper piston rod, the two driving cylinders are symmetrically arranged along the upper piston rod, the moving smoothness of the movable locking sleeve can be further improved, and the locking stability is guaranteed.
A first O-shaped sealing ring and a second O-shaped sealing ring are arranged between the end cover plate and the hollow pin shaft, the first O-shaped sealing ring and the second O-shaped sealing ring are sleeved on the hollow pin shaft, the first O-shaped sealing ring is located above the second O-shaped sealing ring, the hollow pin shaft can be further prevented from shaking, and therefore the moving stability of the movable lock sleeve is improved.
The first end part is fixedly connected with a first proximity switch, the second end part is fixedly connected with a second proximity switch, the first proximity switch and the second proximity switch are positioned on the same side of the sleeve, the end part of the hollow pin shaft is fixedly connected with a support rod seat, the support rod seat is fixedly connected with an induction block, the induction block is positioned between the first proximity switch and the second proximity switch, the vertical distance between the first proximity switch and the barrel is the same as that between the second proximity switch and the barrel, the vertical distance between the induction block and the barrel is the same as that between the first proximity switch and the barrel, and when the induction block moves upwards along with the hollow pin shaft to trigger the first proximity switch, the limit value of the upward movement of the hollow pin shaft can be detected; when the induction block moves downwards along with the hollow pin shaft to trigger the second proximity switch, the limit value of the downward movement of the hollow pin shaft can be detected; when the hollow pin shaft moves downwards to a limit value, the clamping jaw is in a complete locking state, and when the hollow pin shaft moves upwards to the limit value, the clamping jaw is in a complete opening state, so that the locking and unlocking accuracy can be further improved.
Claims (9)
1. A mechanical locking method for an end part of an oil cylinder is characterized by comprising the following steps:
a. installing a locking platform (2) of the mechanical locking device at the end part of the oil cylinder on the end part of the oil cylinder body (1), and extending an upper piston rod (4) into the oil cylinder body (1);
b. the piston (3) in the oil cylinder body (1) is pushed to move the movable arc (9) on the lower piston rod (5) upward until the end surface of the movable arc (9) on the lower piston rod (5) contacts with the end surface of the fixed arc (8) on the upper piston rod (4);
c. the driving piece (12) drives the movable lock sleeve (10) arranged in the oil cylinder body (1) to move downwards, under the action of the matching surfaces of the movable lock sleeve (10) and the clamping jaws (11), the clamping jaws (11) rotate anticlockwise by taking the contact surface of the clamping jaws (11) and the fixed arc (8) as a hinged point, the clamping jaws (11) are closed, the closed clamping jaws (11) connect the fixed arc (8) and the movable arc (9) together, and the mechanical locking of the end part of the oil cylinder is completed;
the mechanical locking device for the end part of the oil cylinder comprises a locking platform (2) arranged above an oil cylinder body (1), a piston (3) is installed in the oil cylinder body (1), an upper piston rod (4) and a lower piston rod (5) are arranged on the outer wall of the oil cylinder body (1), the lower piston rod (5) is connected with the piston (3), the upper end of the upper piston rod (4) penetrates through an end cover plate (7) of the oil cylinder body (1) and is connected with the locking platform (2), the lower end of the upper piston rod (4) is connected with a fixed cylindrical object (8), a movable cylindrical object (9) is connected onto the lower piston rod (5), a movable locking sleeve (10) is installed in the oil cylinder body (1), the movable locking sleeve (10) is located above the piston (3), clamping claws (11) for clamping the fixed cylindrical object (8) and the movable cylindrical object (9) are uniformly arranged in the circumferential direction of the movable locking sleeve (10), and a driving piece (12) for driving the movable locking sleeve (10) and a claw (11) for driving piece for driving the movable And a cylinder shaft of the driving cylinder (13) is fixedly connected with the flange plate (6).
2. The mechanical locking method for the end part of the oil cylinder as claimed in claim 1, wherein: the driving piece (12) comprises a sleeve (14), a screw rod (15), a hollow pin shaft (16), a key (17) and a hand wheel (18), the hollow pin shaft (16) is installed in the sleeve (14), an external thread is arranged on the screw rod (15), an internal thread is arranged on the hollow pin shaft (16), the screw rod (15) is in threaded connection with the hollow pin shaft (16), the hand wheel (18) is connected with the screw rod (15) through the key (17), and the hollow pin shaft (16) is fixedly connected with the movable lock sleeve (10).
3. The mechanical locking method for the end part of the oil cylinder as claimed in claim 2, wherein: the sleeve (14) comprises a first end portion (19), a cylinder body (20) and a second end portion (21), the first end portion (19), the cylinder body (20) and the second end portion (21) are integrally formed, the cross sections of the first end portion (19) and the second end portion (21) are circular, the pipe diameters of the first end portion (19) and the second end portion (21) are the same, and the pipe diameter of the first end portion (19) is larger than that of the cylinder body (20).
4. A cylinder end mechanical locking method according to claim 3, characterized in that: the screw rod bearing is characterized in that an end cover (22) is arranged on the sleeve (14), the end cover (22) is fixedly connected with the first end portion (19), a gland (23) is fixedly connected onto the end cover (22), a first groove is formed in the end cover (22), a second groove is formed in the gland (23), the first groove and the second groove enclose a containing cavity (24) with a square cross section, a guide sleeve (25) is arranged in the containing cavity (24), and the guide sleeve (25) is sleeved on the screw rod (15).
5. The mechanical locking method for the end part of the oil cylinder as claimed in claim 2, wherein: and a connecting nut (26) is fixed in the hollow pin shaft (16), an internal thread is formed on the connecting nut (26), and the connecting nut (26) is in threaded connection with the screw rod (15).
6. The mechanical locking method for the end part of the oil cylinder as claimed in claim 2, wherein: two annular guide belts (27) are arranged between the sleeve (14) and the hollow pin shaft (16), and the two annular guide belts (27) are sleeved on the hollow pin shaft (16).
7. The mechanical locking method for the end part of the oil cylinder as claimed in claim 1, wherein: the two driving pieces (12) are symmetrically arranged along the upper piston rod (4), the two driving cylinders (13) are symmetrically arranged along the upper piston rod (4), and the two driving cylinders (13) are symmetrically arranged along the upper piston rod (4).
8. The mechanical locking method for the end part of the oil cylinder as claimed in claim 2, wherein: a first O-shaped sealing ring (28) and a second O-shaped sealing ring (29) are arranged between the end cover plate (7) and the hollow pin shaft (16), the first O-shaped sealing ring (28) and the second O-shaped sealing ring (29) are sleeved on the hollow pin shaft (16), and the first O-shaped sealing ring (28) is located above the second O-shaped sealing ring (29).
9. A cylinder end mechanical locking method according to claim 3, characterized in that: the hollow shaft type electric water heater is characterized in that a first proximity switch (30) is fixedly connected to the first end portion (19), a second proximity switch (31) is fixedly connected to the second end portion (21), the first proximity switch (30) and the second proximity switch (31) are located on the same side of the sleeve (14), a supporting rod seat (32) is fixedly connected to the end portion of the hollow shaft (16), an induction block (33) is fixedly connected to the supporting rod seat (32), the induction block (33) is located between the first proximity switch (30) and the second proximity switch (31), the vertical distance between the first proximity switch (30) and the cylinder body (20) is the same as that between the second proximity switch (31) and the cylinder body (20), and the vertical distance between the induction block (33) and the cylinder body (20) is the same as that between the first proximity switch (30) and the cylinder body (20).
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| CN201910194754.8A CN109812463B (en) | 2019-03-14 | 2019-03-14 | Mechanical locking method for end part of oil cylinder |
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| CN201910194754.8A CN109812463B (en) | 2019-03-14 | 2019-03-14 | Mechanical locking method for end part of oil cylinder |
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| US4693497A (en) * | 1986-06-19 | 1987-09-15 | Cameron Iron Works, Inc. | Collet connector |
| CN101576188B (en) * | 2009-06-15 | 2010-12-01 | 哈尔滨工程大学 | Jaw-type pipe coupler with simple structure |
| CN103423529B (en) * | 2012-07-11 | 2016-04-27 | 中国海洋石油总公司 | Hydraulic type submarine pipeline connector |
| CN203500654U (en) * | 2013-09-24 | 2014-03-26 | 国家深海基地管理中心 | Seabed hydraulic claw type connector |
| CN105584028B (en) * | 2016-02-24 | 2018-06-12 | 张家港市德曼机械科技有限公司 | Rod assembly in folding mould device |
| CN205937301U (en) * | 2016-08-10 | 2017-02-08 | 杭州职业技术学院 | Hydro -cylinder machinery locking device |
| CN207064383U (en) * | 2017-07-27 | 2018-03-02 | 中国水利水电夹江水工机械有限公司 | The hydraulic headstock gear of locking device |
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