CN217633229U - Tower crane jacking cylinder capable of being locked manually - Google Patents
Tower crane jacking cylinder capable of being locked manually Download PDFInfo
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- CN217633229U CN217633229U CN202221630068.4U CN202221630068U CN217633229U CN 217633229 U CN217633229 U CN 217633229U CN 202221630068 U CN202221630068 U CN 202221630068U CN 217633229 U CN217633229 U CN 217633229U
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Abstract
The utility model provides a tower crane jacking oil cylinder capable of being manually locked, which 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 a manual locking device for locking the piston rod is 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 utility model relates to a hoisting machinery field, concretely relates to tower crane jacking cylinder that can manual locking.
Background
At present, from lift-type tower crane all used hydraulic jacking cylinder at the festival of rising or dismantlement, especially at the jacking in-process, tower crane's jib loading boom, the tower cap, the weight of spare parts such as balance arm and counter weight and last rotary platform all is born by jacking cylinder, jacking cylinder piston rod bears very big holding down force, and utilize the check valve to carry out the control oil circuit during traditional hydro-cylinder, but because the sealing washer of the inside piston department of hydro-cylinder originally will lead to a certain amount of internal leakage, especially the internal leakage volume of leaking after the sealing washer is ageing will become exponential level increase, the check valve generally utilizes hydraulic circuit to control simultaneously, the hydraulic valve piece of its own also has certain internal leakage, so tower crane is the most dangerous link in whole installation use when the festival is added in the jacking or dismantlement, very easily cause the incident, this utility model discloses can the corresponding risk of effectual reduction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect in the prior art, providing one kind and can realizing manual locking, make tower crane's jacking cylinder when the jacking or when dismantling, fix the jacking cylinder who sets for the position and can not sink.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: 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 extreme cover are whole forging, the upper end cover connecting seat is connected with the main beam support of jacking stock, upper end cover and cylinder body are welded connection, 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.
The utility model discloses there is following beneficial effect:
1. the utility model discloses both guaranteed tower crane's jacking hydro-cylinder when jacking or dismantlement, fixed in the position of settlement and can not sink, the security of the operation of assurance has realized the convenience of manipulation again.
2. The manual locking device can control the locking brake to extend out and retract, and then 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 present invention will be further explained with reference to the drawings and examples.
Fig. 1 is an overall structure diagram of the present invention.
Fig. 2 is a view from C to C in 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
The following describes embodiments of the present invention 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 locking brake 20 is divided into two parts and symmetrically arranged on two sides of the piston rod 2; 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 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 a mounting panel 11, and the mounting 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.
The utility model discloses the theory of operation does: in the working process, when the piston rod 2 extends to a set position, the locking device 4 manually operates the locking handle 24 on the locking device, the locking screw 23 moves forwards through the thread on the lock sleeve 9, and then the locking brake 20 is pushed into the groove of the piston rod 2 of the main jacking oil cylinder, so that the manual locking function is realized, after the jacking or the dismounting of the tower crane is completed, the locking screw 23 is enabled to outwards withdraw through operating the locking handle 24 on the locking device, and the locking screw 23 drives the locking brake 20 to outwards operate, so that the manual brake releasing 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) 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 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).
6. A manually lockable tower crane jacking cylinder according to claim 1 or 3, characterised in that the locking gate (20) cooperates with a guide mechanism arranged inside the cylinder block assembly (5), the guide mechanism comprising symmetrically arranged guide blocks (19), the guide blocks (19) being fixed inside the cylinder barrel of the cylinder block assembly (5) by means of third screws (17) and third washers (18), the guide blocks (19) forming a sliding fit with the locking gate (20).
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 tower crane jacking cylinder capable of being manually locked according to claim 3, wherein the end of the locking screw rod (23) is horseshoe-shaped and is connected with the connecting block (22) in a relative rotation manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630068.4U CN217633229U (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking cylinder capable of being locked manually |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630068.4U CN217633229U (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking cylinder capable of being locked manually |
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| Publication Number | Publication Date |
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| CN217633229U true CN217633229U (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221630068.4U Active CN217633229U (en) | 2022-06-28 | 2022-06-28 | Tower crane jacking cylinder capable of being locked manually |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941640A (en) * | 2022-06-28 | 2022-08-26 | 湖北特种设备检验检测研究院 | Tower crane jacking oil cylinder capable of being locked manually and operation method |
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2022
- 2022-06-28 CN CN202221630068.4U patent/CN217633229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941640A (en) * | 2022-06-28 | 2022-08-26 | 湖北特种设备检验检测研究院 | Tower crane jacking oil cylinder capable of being locked manually and operation method |
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