CN114941640A - Tower crane jacking oil cylinder capable of being locked manually and operation method - Google Patents
Tower crane jacking oil cylinder capable of being locked manually and operation method Download PDFInfo
- Publication number
- CN114941640A CN114941640A CN202210740244.8A CN202210740244A CN114941640A CN 114941640 A CN114941640 A CN 114941640A CN 202210740244 A CN202210740244 A CN 202210740244A CN 114941640 A CN114941640 A CN 114941640A
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- Prior art keywords
- locking
- cylinder body
- tower crane
- body assembly
- brake
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005242 forging Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B2015/267—Manual locking or release
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a tower crane jacking oil cylinder capable of being manually locked and an operation method, and the tower crane jacking oil cylinder comprises a cylinder body assembly which is carried on a tower crane and used for jacking, wherein a piston is arranged in the cylinder body assembly, a piston rod is fixed on the piston, and manual locking devices for locking the piston rod are symmetrically fixed on the outer wall of the cylinder body assembly; the end of the locking screw of the manual locking device is connected with a locking brake, the locking brake is arranged inside the cylinder body assembly, and the locking brake is matched with a groove arranged on the piston rod and locks the piston rod. The jacking oil cylinder is fixed at a set position and can not sink when the jacking oil cylinder of the tower crane is jacked or disassembled.
Description
Technical Field
The invention relates to the field of hoisting machinery, in particular to a tower crane jacking oil cylinder capable of being manually locked and an operation method.
Background
At present, the self-elevating tower crane uses a hydraulic jacking oil cylinder for lifting or dismounting, particularly in the jacking process, the weight of the parts of the tower crane, such as the boom, the tower cap, the balance arm, the counterweight, the upper rotary platform and the like, is borne by the jacking oil cylinder, the piston rod of the jacking oil cylinder bears great downward pressure, while the traditional oil cylinder utilizes the one-way valve to control the oil circuit, because the sealing ring at the piston inside the oil cylinder can cause a certain amount of internal leakage, especially, the internal leakage amount of the aged sealing ring is exponentially increased, meanwhile, the check valve is generally controlled by a hydraulic circuit, a hydraulic valve block of the check valve has certain internal leakage, therefore, the tower crane is the most dangerous link in the whole installation and use process when jacking, adding sections or dismounting, safety accidents are easy to cause, and corresponding risks can be effectively reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a jacking oil cylinder which can realize manual locking and can be fixed at a set position without sinking when a jacking oil cylinder of a tower crane is jacked or disassembled.
In order to achieve the technical characteristics, the invention aims to realize that: a tower crane jacking oil cylinder capable of being locked manually comprises a cylinder body assembly which is carried on a tower crane and used for jacking, wherein a piston is arranged in the cylinder body assembly, a piston rod is fixed on the piston, and manual locking devices used for locking the piston rod are symmetrically fixed on the outer wall of the cylinder body assembly; the end of the locking screw of the manual locking device is connected with a locking brake, the locking brake is arranged inside the cylinder body assembly, and the locking brake is matched with a groove arranged on the piston rod and locks the piston rod.
The cylinder body subassembly comprises upper bracket, the upper end cover, the cylinder body, lower extreme cover and spiral shell lid, upper bracket and upper end cover are whole forging, the upper end cover connecting seat is connected with the main beam support of jacking stock, the upper end cover is welded connection with the cylinder body, the lower extreme cover passes through the screw and is connected with the cylinder body, set up manual locking device on the lower extreme cover, manual locking device passes through the fix with screw on the lower extreme cover, it sets up the spiral shell lid to be close to the connector end at the cylinder body subassembly, and fix with the locking clamp plate, the connector is connected with the jacking crossbeam, whole hydro-cylinder is connected with the oil circuit through the flange.
The manual locking device comprises a lock sleeve, the lock sleeve is fixed on the outer wall of the cylinder body assembly through a first gasket and a first screw, a threaded hole is formed in the lock sleeve, the threaded hole and a locking screw form threaded transmission fit, the end of the locking screw is connected with the locking brake through a connecting block, and the locking brake can achieve the functions of opening and closing along with the horizontal movement of the locking screw.
The connecting block is fixedly connected with the locking brake through a screw and a fourth gasket.
The two locking brakes are symmetrically arranged on two sides of the piston rod in a split manner;
the end part of the locking screw rod is in a horseshoe shape and is connected with the connecting block in a relative rotation mode.
The locking gate is matched with a guide mechanism arranged in the cylinder body assembly, the guide mechanism comprises guide blocks which are symmetrically arranged, the guide blocks are fixed in the cylinder barrel of the cylinder body assembly through third screws and third gaskets, and the guide blocks and the locking gate are in sliding fit.
A stroke limiting mechanism for controlling the stroke of the locking brake is arranged between the locking brake and the cylinder body assembly; the stroke limiting mechanism comprises a locking indicating rod fixed on the outer side wall of the locking gate through a nut, a locking indicating block is fixed at the end of the locking indicating rod, the locking indicating block is matched with a locking limiting switch installed on an installation panel, and the installation panel is fixed on the outer wall of the cylinder body assembly through a second screw and a second gasket.
The end part of the locking screw rod extending out of the cylinder body assembly is fixedly provided with a lock handle for driving the locking screw rod to rotate through a locking nut.
An operation method of a tower crane jacking oil cylinder capable of being locked manually comprises the following steps:
in the working process, when a piston rod of the cylinder body assembly extends to a set position, the manual locking device manually operates a lock handle on the locking device, and a locking screw rod moves forwards through threads on a lock sleeve, so that a locking brake is pushed into a groove of the piston rod of the main jacking oil cylinder, and the manual locking function is realized;
after the tower crane is jacked or disassembled, the locking screw rod is enabled to withdraw outwards by operating the locking handle on the locking device, the locking screw rod drives the locking brake to move outwards, and manual brake release is achieved.
The invention has the following beneficial effects:
1. the invention not only ensures that the jacking oil cylinder of the tower crane is fixed at the set position and does not sink when being jacked or disassembled, ensures the operation safety, but also realizes the operation convenience.
2. The manual locking device can control the locking brake to extend and retract, and further, the locking brake is controlled to be matched with the groove of the piston rod, so that the piston rod is locked.
3. Through foretell guiding mechanism, can realize the direction cooperation to the locking floodgate.
4. The locking brake can be controlled to move in a limited interval through the arranged stroke limiting mechanism, and the inner wall of the main lifting oil cylinder is prevented from being scratched.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is an overall block diagram of the present invention.
FIG. 2 is a view C-C of FIG. 1 of the present invention.
In the figure: the locking device comprises a connector 1, a piston rod 2, a locking pressing plate 3, a manual locking device 4, a cylinder body assembly 5, a piston 6, a first gasket 7, a first screw 8, a lock sleeve 9, a locking limit switch 10, an installation panel 11, a locking indication rod 12, a locking indication block 13, a second screw 14, a second gasket 15, a nut 16, a third screw 17, a third gasket 18, a guide block 19, a locking brake 20, a fourth gasket 21, a connecting block 22, a locking screw 23, a lock handle 24, a locking nut 25 and a groove 26.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-2, a tower crane jacking cylinder capable of being manually locked comprises a cylinder body assembly 5 which is mounted on a tower crane and used for jacking, wherein a piston 6 is arranged inside the cylinder body assembly 5, a piston rod 2 is fixed on the piston 6, and manual locking devices 4 for locking the piston rod 2 are symmetrically fixed on the outer wall of the cylinder body assembly 5; a locking gate 20 is connected to the end of the locking screw 23 of the manual locking device 4, the locking gate 20 being arranged inside the cylinder assembly 5, the locking gate 20 cooperating with and locking a groove 26 arranged on the piston rod 2. By adopting the tower crane jacking oil cylinder, the tower crane jacking oil cylinder is ensured to be fixed at a set position and not to sink when being jacked or disassembled, the operation safety is ensured, and the operation convenience is realized. In the working process, when the piston rod 2 extends to a set position, the locking screw 23 of the manual locking device 4 is pushed out, and then the locking brake is pushed into the groove 26 of the piston rod of the main lifting oil cylinder, so that the automatic locking function is realized.
Further, cylinder body subassembly 5 comprises upper bracket, the upper end cover, the cylinder body, lower extreme cover and spiral shell lid, upper bracket and upper end cover are whole forging, the upper end cover connecting seat is connected with the main beam support of jacking set frame, the upper end cover is welded connection with the cylinder body, the lower extreme cover passes through the screw and is connected with the cylinder body, set up manual locking device 4 on the lower extreme cover, manual locking device 4 passes through the fix with screw on the lower extreme cover, set up the spiral shell lid near 1 end of connector at cylinder body subassembly 5, and fix with locking clamp plate 3, connector 1 is connected with the jacking crossbeam, whole hydro-cylinder is connected with the oil circuit through the flange. The cylinder body component 5 is mainly used for realizing the jacking action of the tower crane, and in the working process, the jacking action of the tower crane is realized
Furthermore, the manual locking device 4 comprises a lock sleeve 9, the lock sleeve 9 is fixed on the outer wall of the cylinder body assembly 5 through a first gasket 7 and a first screw 8, a threaded hole is formed in the lock sleeve 9, the threaded hole and a locking screw 23 form threaded transmission fit, the end of the locking screw 23 is connected with a locking brake 20 through a connecting block 22, and the locking brake 20 performs brake opening and brake closing functions along with horizontal movement of the locking screw 23. The locking and fixing of the piston rod 2 can be achieved by means of the manual locking device 4 described above. In the working process, the locking screw 23 is rotated, the locking screw 23 and the lock sleeve 9 form thread transmission fit, and then the locking brake 20 is pushed, and the piston rod 2 is locked through the locking brake 20.
Furthermore, the number of the locking brakes 20 is two, and the locking brakes are symmetrically arranged on two sides of the piston rod 2 in a split manner; the locking gate 20 having the above-described structure can be opened and closed, thereby locking the piston rod 2.
Furthermore, the end of the locking screw 23 is horseshoe-shaped and is connected with the connecting block 22 in a relative rotation manner. By means of the horseshoe shape described above, a quick connection between the counter connecting piece 22 and the locking screw 23 is achieved. While ensuring that the connecting block 22 and the locking gate 20 can be pushed during the rotation of the locking screw 23.
Further, the locking gate 20 is matched with a guide mechanism arranged inside the cylinder body assembly 5, the guide mechanism comprises guide blocks 19 which are symmetrically arranged, the guide blocks 19 are fixed inside a cylinder barrel of the cylinder body assembly 5 through third screws 17 and third gaskets 18, and the guide blocks 19 and the locking gate 20 form sliding fit. The guide mechanism described above can guide and engage the lock gate 20.
Further, a stroke limiting mechanism for controlling the stroke of the locking brake 20 is arranged between the locking brake and the cylinder body assembly 5; the stroke limiting mechanism comprises a locking indicating rod 12 fixed on the outer side wall of a locking brake 20 through a nut 16, a locking indicating block 13 is fixed at the end of the locking indicating rod 12, the locking indicating block 13 is matched with a locking limiting switch 10 installed on an installation panel 11, and the installation panel 11 is fixed on the outer wall of the cylinder body assembly 5 through a second screw 14 and a second gasket 15. The locking brake can be controlled to move in a limited interval through the arranged stroke limiting mechanism, and the inner wall of the main lifting oil cylinder is prevented from being scratched.
Furthermore, a lock handle 24 for driving the lock screw 23 to rotate is fixedly mounted at the end part of the lock screw, which extends out of the cylinder assembly 5, through a lock nut 25. The locking lever 24 described above can be used to drive the locking screw 23 in rotation.
Example 2:
an operation method of a tower crane jacking oil cylinder capable of being locked manually comprises the following steps:
in the working process, when the piston rod 2 of the cylinder body assembly 5 extends to a set position, the manual locking device 4 manually operates the locking handle 24 on the locking device, and the locking screw 23 moves forwards through the threads on the locking sleeve 9, so that the locking brake 20 is pushed into the groove 26 of the piston rod 2 of the main jacking oil cylinder, and the manual locking function is realized;
after the tower crane is jacked up or disassembled, the locking screw 23 is enabled to be withdrawn outwards by operating the locking handle 24 on the locking device, and the locking screw 23 drives the locking brake 20 to run outwards, so that manual brake release is realized.
The working principle of the invention is as follows: in the working process, when the piston rod 2 extends out of the set position, the locking device 4 manually operates the locking handle 24 on the locking device, the locking screw 23 moves forwards through the threads on the locking sleeve 9, the locking brake 20 is further pushed into the groove of the piston rod 2 of the main jacking oil cylinder, the manual locking function is realized, after jacking or dismounting of the tower crane is completed, the locking handle 24 on the locking device is operated, the locking screw 23 is enabled to outwards withdraw, the locking screw 23 drives the locking brake 20 to outwards operate, and manual brake release is realized.
Claims (9)
1. A tower crane jacking oil cylinder capable of being manually locked is characterized by comprising a cylinder body assembly (5) which is carried on a tower crane and used for jacking, wherein a piston (6) is arranged inside the cylinder body assembly (5), a piston rod (2) is fixed on the piston (6), and manual locking devices (4) used for locking the piston rod (2) are symmetrically fixed on the outer wall of the cylinder body assembly (5); the end of a locking screw rod (23) of the manual locking device (4) is connected with a locking brake (20), the locking brake (20) is arranged inside the cylinder body assembly (5), and the locking brake (20) is matched with a groove (26) arranged on the piston rod (2) and locks the same.
2. The tower crane jacking oil cylinder capable of being manually locked according to claim 1, wherein the cylinder body assembly (5) comprises an upper support, an upper end cover, a cylinder body, a lower end cover and a screw cap, the upper support and the upper end cover are integrally forged pieces, an upper end cover connecting seat is connected with a main cross beam support of the jacking sleeve frame, the upper end cover is in welded connection with the cylinder body, the lower end cover is connected with the cylinder body through screws, a manual locking device (4) is arranged on the lower end cover, the manual locking device (4) is fixed on the lower end cover through screws, the screw cap is arranged at the end, close to the connector (1), of the cylinder body assembly (5) and is fixed through a locking pressing plate (3), the connector (1) is connected with the jacking cross beam, and the whole oil cylinder is connected with an oil way through a flange.
3. The tower crane jacking oil cylinder capable of being manually locked according to claim 1, wherein the manual locking device (4) comprises a lock sleeve (9), the lock sleeve (9) is fixed on the outer wall of the cylinder body assembly (5) through a first gasket (7) and a first screw (8), a threaded hole is formed in the lock sleeve (9), the threaded hole and a locking screw rod (23) form threaded transmission fit, the end of the locking screw rod (23) is connected with the locking brake (20) through a connecting block (22), and the locking brake (20) realizes the functions of opening and closing the brake along with the horizontal movement of the locking screw rod (23).
4. The tower crane jacking cylinder capable of being manually locked according to claim 3, wherein the connecting block (22) is fixedly connected with the locking brake (20) through a screw and a fourth gasket (21).
5. The tower crane jacking oil cylinder capable of being manually locked according to claim 1 or 3, wherein the number of the locking brakes (20) is two, and the locking brakes are symmetrically arranged on two sides of the piston rod (2);
the end part of the locking screw rod (23) is in a horseshoe shape and is connected with the connecting block (22) in a relative rotation way.
6. A tower crane jacking cylinder which can be manually locked according to claim 1 or 3, characterized in that the locking gate (20) is fitted with a guide mechanism arranged inside the cylinder body assembly (5), the guide mechanism comprises symmetrically arranged guide blocks (19), the guide blocks (19) are fixed inside the cylinder barrel of the cylinder body assembly (5) through third screws (17) and third gaskets (18), and the guide blocks (19) and the locking gate (20) form a sliding fit.
7. The tower crane jacking cylinder capable of being manually locked according to claim 3, wherein a stroke limiting mechanism for controlling the stroke of the locking brake (20) is arranged between the locking brake and the cylinder body assembly (5); the stroke limiting mechanism comprises a locking indicating rod (12) fixed on the outer side wall of a locking brake (20) through a nut (16), a locking indicating block (13) is fixed at the end head of the locking indicating rod (12), the locking indicating block (13) is matched with a locking limiting switch (10) installed on an installation panel (11), and the installation panel (11) is fixed on the outer wall of a cylinder body assembly (5) through a second screw (14) and a second gasket (15).
8. The tower crane jacking cylinder capable of being manually locked according to claim 3, wherein a lock handle (24) for driving the locking screw rod (23) to rotate is fixedly arranged at the end part of the locking screw rod (23) extending out of the cylinder body assembly (5) through a locking nut (25).
9. The method of operating a manually lockable lift cylinder for a tower crane according to any of claims 1 to 8, characterized by:
in the working process, when the piston rod (2) of the cylinder body assembly (5) extends to a set position, the manual locking device (4) manually operates a lock handle (24) on the locking device, and a locking screw rod (23) moves forwards through threads on a lock sleeve (9), so that a locking brake (20) is pushed into a groove (26) of the piston rod (2) of the main jacking oil cylinder, and the manual locking function is realized;
after the tower crane is jacked up or dismounted, the locking screw (23) is enabled to outwards withdraw by operating the locking handle (24) on the locking device, the locking screw (23) drives the locking brake (20) to outwards operate, and manual brake release is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740244.8A CN114941640A (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking oil cylinder capable of being locked manually and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210740244.8A CN114941640A (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking oil cylinder capable of being locked manually and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114941640A true CN114941640A (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210740244.8A Pending CN114941640A (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking oil cylinder capable of being locked manually and operation method |
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| Country | Link |
|---|---|
| CN (1) | CN114941640A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011682A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Underground power station servomotor |
| CN102852695A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨电机厂有限责任公司 | Manual and hydraulic integrated locking device |
| CN202707686U (en) * | 2012-08-05 | 2013-01-30 | 中船重工中南装备有限责任公司 | Connection structure of hydrocylinder locking device |
| CN104533690A (en) * | 2014-12-15 | 2015-04-22 | 常州液压成套设备厂有限公司 | Locking device for locking servomotor |
| CN217633229U (en) * | 2022-06-28 | 2022-10-21 | 湖北特种设备检验检测研究院 | Tower crane jacking cylinder capable of being locked manually |
-
2022
- 2022-06-28 CN CN202210740244.8A patent/CN114941640A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011682A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Underground power station servomotor |
| CN202707686U (en) * | 2012-08-05 | 2013-01-30 | 中船重工中南装备有限责任公司 | Connection structure of hydrocylinder locking device |
| CN102852695A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨电机厂有限责任公司 | Manual and hydraulic integrated locking device |
| CN104533690A (en) * | 2014-12-15 | 2015-04-22 | 常州液压成套设备厂有限公司 | Locking device for locking servomotor |
| CN217633229U (en) * | 2022-06-28 | 2022-10-21 | 湖北特种设备检验检测研究院 | Tower crane jacking cylinder capable of being locked manually |
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Application publication date: 20220826 |