CN112249934A - Large pile-winding type full-circle slewing crane - Google Patents
Large pile-winding type full-circle slewing crane Download PDFInfo
- Publication number
- CN112249934A CN112249934A CN202011312342.9A CN202011312342A CN112249934A CN 112249934 A CN112249934 A CN 112249934A CN 202011312342 A CN202011312342 A CN 202011312342A CN 112249934 A CN112249934 A CN 112249934A
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- roller
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- 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
- B66C23/36—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 mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
- B66C23/525—Double slewing cranes on ships
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- 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
- B66C23/62—Constructional features or details
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- 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
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a large pile-winding type fully-revolving crane which comprises a crane, wherein a rope winding mechanism, a roller hydraulic brake and a suspension arm placing frame are arranged on the crane, the rope winding mechanism sequentially penetrates through and winds a revolving platform, a tripod, a suspension arm part and a lifting hook, the suspension arm placing frame is arranged on a deck placing seat, and the roller hydraulic brake is fixedly arranged on one side of a fixing frame of the winch; the roller hydraulic brake comprises a piston hydraulic cylinder, a brake piece, a swinging piece, a manual adjusting piece and a connecting piece; the manual adjusting piece comprises a sliding rod and a handle; the suspension arm rest stand comprises a rack, rollers, roller connecting pieces and side baffles. The invention has the advantages of sufficient braking force and stable braking.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a large pile-winding type full-circle slewing crane.
Background
In the traditional crane winch, when the winch acts, in the process that a lifting hook ascends or descends after a brake is loosened, the situation that the brake is opened insufficiently due to insufficient pressure of a brake hydraulic oil way occurs, so that the winch brake shakes, the risk that the winch brake brakes again due to insufficient pressure of the brake hydraulic oil way exists, and once the situation that the brake suddenly occurs in the lifting process of the lifting hook, goods can be unhooked; if the situation happens, the goods are damaged slightly, and casualties are caused seriously, so that the hoisting risk and the cost are greatly improved.
Disclosure of Invention
The invention provides a large pile-winding type fully-revolving crane with sufficient braking force and stable braking.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a large-scale pile-winding type fully-revolving crane, which comprises a crane, the hoist is including installing the deck base on the deck, install on the deck and be located the deck of deck base one side and shelve the seat, a pedestal, slewing bearing, rotary platform, rotary drive device, tripod and davit portion, the base welding is on the deck base, the base top is connected with slewing bearing's outer lane screw rod, rotary platform's bottom is connected with slewing bearing's inner circle screw rod, tripod fixed mounting is at rotary platform's top, davit portion articulates on rotary platform, be equipped with the winch in rotary platform and the davit portion, the winch includes the cylinder, the encoder, the motor and the mount that is used for fixed cylinder, the encoder sets up the one side at the motor output, its characterized in: the hoisting machine is provided with a rope winding mechanism, a roller hydraulic brake and a suspension arm placing frame, the rope winding mechanism sequentially penetrates and winds the rotary platform, the tripod, the suspension arm part and the lifting hook, the suspension arm placing frame is arranged on the deck placing seat, and the roller hydraulic brake is fixedly arranged on one side of a fixing frame of the winch;
the roller hydraulic brake comprises a piston hydraulic cylinder, a brake part, a swinging part, a manual adjusting part and a connecting part, the piston hydraulic cylinder is fixedly connected with a fixed frame, the connecting part is provided with a first hinge hole, one side of the first hinge hole is provided with a second hinge hole, the second hinge hole is hinged with a movable rod, one end of the swinging part is hinged with the second hinge hole of the connecting part together with the movable rod, the other end of the swinging part is hinged with a fixedly-mounted swinging lug, the swinging lug is fixedly arranged, one end of the connecting part, far away from the first hinge hole, is hinged with the manual adjusting part, the brake part comprises a first arc-shaped brake block and a second arc-shaped brake block, the first arc-shaped brake block and the second arc-shaped brake block are arranged on a roller of a roller, one end of the first arc-shaped brake block and one end of the second arc-shaped brake block are hinged on the same hole position on one side, the other end of the second arc-shaped brake pad is hinged with one end of the movable rod far away from the connecting piece;
one side of the cylinder body of the piston hydraulic cylinder is provided with a hydraulic oil pipe, the piston hydraulic cylinder is provided with a spring frame, a piston rod of the piston hydraulic cylinder extends into the spring frame, a spring is arranged in the spring frame, one end of the spring frame, which is far away from the piston hydraulic cylinder, is provided with a limiting block, the limiting block is fixed on the spring frame through a nut, one end of the spring frame, which is close to the piston hydraulic cylinder, is provided with a movable block, the center of the movable block is provided with a mounting hole, one end of the movable block, which is far away from the piston hydraulic cylinder, is provided with a counter bore which; a piston rod of the piston hydraulic cylinder extends into the mounting hole, interference fit is achieved, and meanwhile, the piston hydraulic cylinder is fixed through radial screws; the driving rod comprises a rod body, a connecting part connected to one end of the rod body and an adjusting part connected to the other end of the rod body, the diameter of the connecting part is directly larger than that of the rod body, the connecting part is located in the counter bore, the connecting part is pressed through a pressing ring, and the pressing ring is fixed on the movable block through a bolt; the spring is sleeved on the rod body between the resisting ring and the limiting block; the driving rod is provided with a piston rod hinged part, the driving rod is hinged on the fixed frame through the piston rod hinged part, and the adjusting part is provided with an adjusting chute; the manual adjusting piece is connected with the adjusting part and extends into the adjusting chute;
the manual adjusting part comprises a sliding rod and a handle, the sliding rod is fixedly connected with the handle, the sliding rod is hinged to the connecting piece, a thread is arranged at the hinged position of the sliding rod and the connecting piece, a nut is arranged on one side of the thread of the sliding rod, and one end, far away from the handle, of the sliding rod is connected with the adjusting sliding chute;
the suspension arm rest comprises a rack, a roller connecting piece and side baffles, wherein the roller is rotatably connected to the roller connecting piece through a pin shaft, the roller connecting piece is fixedly installed on the top surface of the rack, and the side baffles are arranged on two sides of the top surface of the rack;
the rope winding mechanism comprises a main winch, a fixed pulley block, a movable pulley block and a guide pulley block, the main winch is arranged on the rotary platform, the guide pulley block is respectively arranged on the tripod and the lifting arm portion, the fixed pulley block is arranged at one end, close to the lifting hook, of the lifting arm portion, the movable pulley block is hinged with the lifting hook, and the main winch, the fixed pulley block, the movable pulley block and the guide pulley block are sequentially connected through a steel wire rope.
According to the arrangement, in a non-working state, under the action of a spring, the first arc-shaped brake pad and the second arc-shaped brake pad are in a normally-clasped state on the roller, namely a braking state, when the roller hydraulic brake needs to be opened, the piston hydraulic cylinder is driven, so that the hydraulic cylinder overcomes the elastic force of the spring to push the driving rod to move, the driving rod pushes the sliding rod through the adjusting chute after moving, so that the connecting piece drives the movable rod to move, the movable rod and the connecting piece move towards one end far away from the brake piece together, and the first arc-shaped brake pad and the second arc-shaped brake pad are driven to be opened, so that the brake; when the pressure of the winch brake hydraulic oil circuit is insufficient, the nut on the manual adjusting piece can be rotated to adjust the stroke between the sliding rod of the manual adjusting piece and the adjusting sliding groove, so that the stroke of the piston rod is increased, the pressure of the piston rod for opening the brake piece is enhanced, and the problems that the brake is not fully opened due to insufficient pressure of the winch brake hydraulic oil circuit of the traditional crane and the winch brake shakes are solved.
In the invention, by arranging the roller, when the suspension arm part is placed, rolling friction is provided by the roller, so that the friction between the suspension arm and the placing frame when the suspension arm shakes is reduced.
Furthermore, a torque meter is further arranged on the rope winding mechanism and arranged on one side of the fixed pulley block and used for measuring the weight of the hook load. In this way, the crane driver can visually observe the load weight.
Further, the piston hydraulic cylinder is fixedly connected with the fixed frame through a bolt on one side far away from the manual adjusting piece.
Further, the handle is of a C-shaped structure. In this way, manual grip adjustment is facilitated.
Furthermore, adjust the spout for being equipped with one end and being equipped with the opening and sunken cylinder that forms the spout to the other end, adjust the spout and keep away from open-ended one end and piston rod fixed connection of piston hydraulic cylinder.
Drawings
Fig. 1 is a schematic structural view of the crane according to the present invention.
Fig. 2 is a schematic structural diagram of a hydraulic drum brake according to the present invention.
FIG. 3 is a schematic top view of the hydraulic drum brake and motor of the present invention.
Fig. 4 is a rear view structural schematic diagram of the hydraulic drum brake of the present invention.
Fig. 5 is a schematic view of the rope winding mechanism according to the present invention.
Fig. 6 is a schematic structural view of the boom rest of the present invention.
Fig. 7 is an enlarged view of a in fig. 4.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
1-6, a large pile-winding type fully-revolving crane, comprising a crane, wherein the crane comprises a deck base 1 installed on a deck, a deck resting base 2 installed on the deck and located on one side of the deck base 1, a base, a slewing bearing, a slewing platform 3, a slewing driving device, a tripod 4 and a boom part 5, the base is welded on the deck base 1, the top of the base is connected with an outer ring screw rod of the slewing bearing, the bottom of the slewing platform is connected with an inner ring screw rod of the slewing bearing, the tripod is fixedly installed on the top of the slewing platform, the boom part is hinged on the slewing platform, a winch is arranged on the slewing platform and the boom part, the winch comprises a roller 700, an encoder 701, a motor 702 and a fixing frame for fixing the roller, the encoder is arranged on one side of the output end of the motor and is used for counting the number of revolutions, a rope, The rope winding mechanism sequentially penetrates and winds the rotary platform 3, the tripod 4 and the lifting arm part 5 to be connected to the lifting hook 65, the deck placing seat 2 is provided with the lifting arm placing frame 21, and the roller hydraulic brake 8 is fixedly installed on one side of a fixing frame 70 of the winch through bolts.
The roller hydraulic brake 8 comprises a piston hydraulic cylinder 81, a brake part 82, a swinging part 83, a manual adjusting part 84 and a connecting part 85, one end of the piston hydraulic cylinder 81 is hinged with the brake part 82, the other end of the piston hydraulic cylinder is fixedly connected with a fixed frame 703, the connecting part 85 is provided with a first hinged hole 851, one side of the first hinged hole 851 is provided with a second hinged hole 852, the second hinged hole 852 is hinged with a movable rod 86, one end of the swinging part 83 is hinged with the second hinged hole 852 of the connecting part together with the movable rod 86, the other end of the swinging part 83 is hinged with a swinging lug 831 fixedly installed, the swinging lug 831 is fixedly arranged, one end of the connecting part 85 far away from the first hinged hole 851 is hinged with the manual adjusting part 84, the brake part 82 comprises a first arc-shaped brake block 821 and a second arc-shaped brake block 822, the first arc-shaped brake block 821 and the second arc-shaped brake block 822 are oppositely arranged on a roller 7001 of the roller 700, one ends of the first arc-shaped brake block, the other end of the first arc-shaped brake block 821 is hinged with the first hinge hole of the connecting piece 85, and the other end of the second arc-shaped brake block 822 is hinged with one end of the movable rod 86 far away from the connecting piece 85.
A hydraulic oil pipe is arranged on one side of the cylinder body of the piston hydraulic cylinder 81, a spring frame 81a is arranged on the piston hydraulic cylinder 81, a piston rod of the piston hydraulic cylinder 81 extends into the spring frame 81a, a spring 811 is arranged in the spring frame 81a, a limiting block 81b is arranged at one end, far away from the piston hydraulic cylinder 811, of the spring frame 81a, and the limiting block 81b is fixed on the spring frame 81a through a nut, as shown in fig. 7, a movable block 9 is arranged at one end, close to the piston hydraulic cylinder 81, of the spring frame 81a, a mounting hole 91 is arranged in the center of the movable block 9, a counter bore 92 larger than the mounting hole 91 is arranged at one end, far away from the piston hydraulic cylinder 81, of the movable block 9; a piston rod of the piston hydraulic cylinder 81 extends into the mounting hole 91 and is in interference fit with the mounting hole, and is fixed through a radial screw; the driving rod 94 is further included, the driving rod 94 includes a rod body 941, a connecting portion 942 connected to one end of the rod body 941 and an adjusting portion 942 connected to the other end of the rod body, the diameter of the connecting portion is directly larger than that of the rod body, the connecting portion is located in a counter bore, the connecting portion is pressed through a pressing ring 100, and the pressing ring 100 is fixed on the movable block through a bolt; the spring sleeve is located on the body of rod between backstop ring and the stopper. The driving rod is provided with a piston rod hinge 812, the driving rod is hinged on the fixed frame 703 through the piston rod hinge 812, and the adjusting part is provided with an adjusting chute 813.
The manual adjusting piece 84 comprises a sliding rod 841 and a handle 842, the sliding rod 841 is fixedly connected with the handle 842, the sliding rod 841 is hinged on the connecting piece 85, a thread is arranged at the hinged position of the sliding rod 841 and the connecting piece 85, a nut 843 is arranged at one side of the thread of the sliding rod 841, and one end of the sliding rod 841, far away from the handle 842, is in threaded connection with the adjusting chute 813; the handle 842 is of a C-shaped structure; the adjusting chute 813 is a cylinder provided with a chute formed by sinking one end of the adjusting chute into the other end of the adjusting chute, and the end of the adjusting chute 813 far away from the opening is fixedly connected with the piston rod of the piston hydraulic cylinder 81.
The boom rest 21 comprises a frame 211, a roller 212, a roller connector 213 and side baffles 214, wherein the roller 212 is rotatably connected to the roller connector 213 through a pin shaft, the roller connector 213 is fixedly mounted on the top surface of the frame 211, and the side baffles 214 are arranged on two sides of the top surface of the frame 211.
The rope winding mechanism 6 comprises a main winch 61, a fixed pulley block 62, a movable pulley block 63 and a guide pulley block 64, the main winch 61 is arranged on the rotary platform 3, the guide pulley block 64 is respectively arranged on the tripod 4 and the suspension arm part 5, the fixed pulley block 62 is arranged at one end, close to the hook 65, of the suspension arm part 5, the movable pulley block 63 is hinged with the hook 65, and the main winch 61, the fixed pulley block 62, the movable pulley block 63 and the guide pulley block 64 are sequentially connected through a steel wire rope 66.
The piston hydraulic cylinder 81 is fixedly connected with a fixed frame through a bolt at one side far away from the manual adjusting piece.
The working principle of the structure is as follows: when the roller hydraulic brake needs to be opened, a piston hydraulic cylinder is driven, so that the hydraulic cylinder overcomes the elastic force of the spring to push a driving rod to move, the driving rod pushes a sliding rod through an adjusting sliding groove after moving, a connecting piece drives a movable rod to move, the movable rod and the connecting piece move towards one end far away from a brake piece together, and the first arc-shaped brake pad and the second arc-shaped brake pad are driven to be opened, so that the brake is opened; when the pressure of the winch brake hydraulic oil circuit is insufficient, the nut on the manual adjusting piece can be rotated to adjust the stroke between the sliding rod of the manual adjusting piece and the adjusting sliding groove, so that the stroke of the piston rod is increased, the pressure of the piston rod for opening the brake piece is enhanced, and the problems that the brake is not fully opened due to insufficient pressure of the winch brake hydraulic oil circuit of the traditional crane and the winch brake shakes are solved.
In the invention, by arranging the roller, when the suspension arm part is placed, rolling friction is provided by the roller, so that the friction between the suspension arm and the placing frame when the suspension arm shakes is reduced.
Claims (5)
1. The utility model provides a large-scale pile-winding type fully-revolving crane, which comprises a crane, the hoist is including installing the deck base on the deck, install on the deck and be located the deck of deck base one side and shelve the seat, a pedestal, slewing bearing, rotary platform, rotary drive device, tripod and davit portion, the base welding is on the deck base, the base top is connected with slewing bearing's outer lane screw rod, rotary platform's bottom is connected with slewing bearing's inner circle screw rod, tripod fixed mounting is at rotary platform's top, davit portion articulates on rotary platform, be equipped with the winch in rotary platform and the davit portion, the winch includes the cylinder, the encoder, the motor and the mount that is used for fixed cylinder, the encoder sets up the one side at the motor output, its characterized in: the hoisting machine is provided with a rope winding mechanism, a roller hydraulic brake and a suspension arm placing frame, the rope winding mechanism sequentially penetrates and winds the rotary platform, the tripod, the suspension arm part and the lifting hook, the suspension arm placing frame is arranged on the deck placing seat, and the roller hydraulic brake is fixedly arranged on one side of a fixing frame of the winch;
the roller hydraulic brake comprises a piston hydraulic cylinder, a brake part, a swinging part, a manual adjusting part and a connecting part, the piston hydraulic cylinder is fixedly connected with a fixed frame, the connecting part is provided with a first hinge hole, one side of the first hinge hole is provided with a second hinge hole, the second hinge hole is hinged with a movable rod, one end of the swinging part is hinged with the second hinge hole of the connecting part together with the movable rod, the other end of the swinging part is hinged with a fixedly-mounted swinging lug, the swinging lug is fixedly arranged, one end of the connecting part, far away from the first hinge hole, is hinged with the manual adjusting part, the brake part comprises a first arc-shaped brake block and a second arc-shaped brake block, the first arc-shaped brake block and the second arc-shaped brake block are arranged on a roller of a roller, one end of the first arc-shaped brake block and one end of the second arc-shaped brake block are hinged on the same hole position on one side, the other end of the second arc-shaped brake pad is hinged with one end of the movable rod far away from the connecting piece;
one side of the cylinder body of the piston hydraulic cylinder is provided with a hydraulic oil pipe, the piston hydraulic cylinder is provided with a spring frame, a piston rod of the piston hydraulic cylinder extends into the spring frame, a spring is arranged in the spring frame, one end of the spring frame, which is far away from the piston hydraulic cylinder, is provided with a limiting block, the limiting block is fixed on the spring frame through a nut, one end of the spring frame, which is close to the piston hydraulic cylinder, is provided with a movable block, the center of the movable block is provided with a mounting hole, one end of the movable block, which is far away from the piston hydraulic cylinder, is provided with a counter bore which; a piston rod of the piston hydraulic cylinder extends into the mounting hole, interference fit is achieved, and meanwhile, the piston hydraulic cylinder is fixed through radial screws; the driving rod comprises a rod body, a connecting part connected to one end of the rod body and an adjusting part connected to the other end of the rod body, the diameter of the connecting part is directly larger than that of the rod body, the connecting part is located in the counter bore, the connecting part is pressed through a pressing ring, and the pressing ring is fixed on the movable block through a bolt; the spring is sleeved on the rod body between the resisting ring and the limiting block; the driving rod is provided with a piston rod hinged part, the driving rod is hinged on the fixed frame through the piston rod hinged part, and the adjusting part is provided with an adjusting chute; the manual adjusting piece is connected with the adjusting part and extends into the adjusting chute;
the manual adjusting part comprises a sliding rod and a handle, the sliding rod is fixedly connected with the handle, the sliding rod is hinged to the connecting piece, a thread is arranged at the hinged position of the sliding rod and the connecting piece, a nut is arranged on one side of the thread of the sliding rod, and one end, far away from the handle, of the sliding rod is connected with the adjusting sliding chute;
the suspension arm rest comprises a rack, a roller connecting piece and side baffles, wherein the roller is rotatably connected to the roller connecting piece through a pin shaft, the roller connecting piece is fixedly installed on the top surface of the rack, and the side baffles are arranged on two sides of the top surface of the rack;
the rope winding mechanism comprises a main winch, a fixed pulley block, a movable pulley block and a guide pulley block, the main winch is arranged on the rotary platform, the guide pulley block is respectively arranged on the tripod and the lifting arm portion, the fixed pulley block is arranged at one end, close to the lifting hook, of the lifting arm portion, the movable pulley block is hinged with the lifting hook, and the main winch, the fixed pulley block, the movable pulley block and the guide pulley block are sequentially connected through a steel wire rope.
2. A large pile-winding type fully-revolving crane according to claim 1, characterized in that: the rope winding mechanism is further provided with a torque meter, and the torque meter is arranged on one side of the fixed pulley block and used for measuring the weight of the hook load.
3. A large pile-winding type fully-revolving crane according to claim 1, characterized in that: and the piston hydraulic cylinder is fixedly connected with the fixed frame through a bolt at one side far away from the manual adjusting piece.
4. A large pile-winding type fully-revolving crane according to claim 1, characterized in that: the handle is of a C-shaped structure.
5. A large pile-winding type fully-revolving crane according to claim 1, characterized in that: the adjusting sliding groove is a cylinder with one end provided with an opening and the other end sunken to form a sliding groove, and the end of the adjusting sliding groove far away from the opening is fixedly connected with a piston rod of the piston hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312342.9A CN112249934A (en) | 2020-11-20 | 2020-11-20 | Large pile-winding type full-circle slewing crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312342.9A CN112249934A (en) | 2020-11-20 | 2020-11-20 | Large pile-winding type full-circle slewing crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112249934A true CN112249934A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011312342.9A Pending CN112249934A (en) | 2020-11-20 | 2020-11-20 | Large pile-winding type full-circle slewing crane |
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| CN (1) | CN112249934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116588822A (en) * | 2023-07-17 | 2023-08-15 | 山东光明工模具制造有限公司 | Hoisting device |
-
2020
- 2020-11-20 CN CN202011312342.9A patent/CN112249934A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116588822A (en) * | 2023-07-17 | 2023-08-15 | 山东光明工模具制造有限公司 | Hoisting device |
| CN116588822B (en) * | 2023-07-17 | 2023-09-19 | 山东光明工模具制造有限公司 | Hoisting device |
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