CN113896094B - Marine material hanging hook locking mechanism - Google Patents
Marine material hanging hook locking mechanism Download PDFInfo
- Publication number
- CN113896094B CN113896094B CN202111247890.2A CN202111247890A CN113896094B CN 113896094 B CN113896094 B CN 113896094B CN 202111247890 A CN202111247890 A CN 202111247890A CN 113896094 B CN113896094 B CN 113896094B
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- CN
- China
- Prior art keywords
- hanging
- bottom plate
- hook
- locking mechanism
- lifting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 239000000725 suspension Substances 0.000 claims abstract description 22
- 239000013013 elastic material Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automation & Control Theory (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention belongs to the technical field of ship lifting hook locking, and discloses a ship material lifting hook locking mechanism, which comprises a suspension arm, a buffer assembly, a locking assembly and a lifting hook, wherein the bottom end of the suspension arm is provided with a mounting groove with a downward notch; the buffer assembly comprises a spring base, a bottom plate and a buffer pad, the spring base is arranged on the suspension arm, a spring is arranged in the spring base, and one end of the spring is fixedly connected with the spring base; a sliding part is fixedly arranged on the bottom plate, one end of the sliding part, far away from the bottom plate, extends into the spring base and is fixedly connected with the other end of the spring, and a hanging plate through hole is formed in the bottom plate; the locking assembly comprises a bolt device fixedly connected with the suspension arm; the lifting hook comprises a lifting seat and a hook body, the hook body is arranged at the bottom of the lifting seat, the top surface of the lifting seat is matched with the shape of the bottom plate, and a hanging plate is arranged on the lifting seat. The marine material hanging hook locking mechanism is simple in integral structure, the existing hanging hook and hanging arm are convenient to improve, the deck space is not occupied, the working strength of a shipman is reduced, and the service life of a steel wire rope is prolonged.
Description
Technical Field
The invention relates to the technical field of ship lifting hook locking, in particular to a ship material lifting hook locking mechanism.
Background
In the shipping process of the ship, the material hanging hooks are required to be properly fixed, so that the hanging hooks are prevented from swinging, equipment is damaged, or safety accidents are avoided. The existing marine material hanging hook fixing mode is to fix the hanging hook on the deck in a downward pulling manner by adopting locks such as steel wire ropes, chains and the like, occupies the deck space, and needs to be provided with a connecting component for assisting in fixing the hanging hook on the deck, and manual operation is needed for each fixing and dismounting, which is relatively troublesome. And to part loop wheel machine higher, especially translation formula material hangs, and the distance that the lifting hook sagged is farther, adopts above-mentioned fixed mode to be difficult to firm, can produce to rock when navigating, leads to wire rope and pulley mechanism on the loop wheel machine to produce wearing and tearing, reduces the life who lifts by crane wire rope.
Disclosure of Invention
The invention aims to provide a marine material hanging hook locking mechanism, which aims to solve the problem of inconvenient fixation of a marine material hanging hook.
To achieve the purpose, the invention adopts the following technical scheme:
a marine material lifting hook locking mechanism comprising:
the bottom end of the suspension arm is provided with a mounting groove with a downward notch;
a cushioning assembly, the cushioning assembly comprising:
the spring base is arranged on the suspension arm, a spring is arranged in the spring base, and one end of the spring is fixedly connected with the spring base;
the bottom plate is fixedly provided with a sliding part, one end of the sliding part, far away from the bottom plate, extends into the spring base and is fixedly connected with the other end of the spring, and the bottom plate is provided with a hanging plate through hole;
the cushion pad is made of elastic materials and is laid on the bottom plate;
the locking assembly comprises a bolt device which is fixedly connected with the suspension arm;
the lifting hook comprises a lifting seat and a hook body, the hook body is arranged at the bottom of the lifting seat, the top surface of the lifting seat is matched with the shape of the bottom plate, and a hanging plate is arranged on the lifting seat; when the lifting hook is retracted, the hanging plate stretches into the through hole of the hanging plate, the bolt device is locked with the hanging plate, and the hanging seat is abutted with the cushion pad.
Optionally, a wire rope via hole is formed in the bottom plate so as to allow the wire rope to pass through.
Optionally, the latch device is a hydraulic or electric telescopic latch device.
Optionally, two support plates are arranged on the suspension arm at intervals, when the hanging plate stretches into the hanging plate through hole, the hanging plate is inserted between the two support plates, and the bolt device is used for fixing the hanging plate and the two support plates in an inserting mode.
Optionally, a remote control module is arranged in the bolt device, and the remote control module can control the start and stop of the bolt device.
Optionally, the cushion pad is fixedly connected to the base plate by a plurality of fasteners.
Optionally, the fastener includes bolt and nut, set up the counter bore on the blotter, the bolt stretches into in the counter bore, one end with bottom plate threaded connection, the other end with nut threaded connection.
Optionally, the fastener further comprises a washer, and the washer is sleeved on the bolt.
Optionally, the shapes of the bottom plate and the top surface of the hanging seat are isosceles trapezoids.
Optionally, the material of the cushion pad is rubber.
The invention has the beneficial effects that:
the lifting hook locking mechanism of the marine material lifting hook is simple in integral structure, the existing lifting hook and the lifting arm are convenient to improve, the lifting hook can be retracted onto the lifting arm after not used and is fixed with the lifting arm body, the deck space is not occupied, the working intensity of a shipman is reduced, the lifting hook is directly fixed with the lifting arm, the crane steel wire rope is prevented from being in a stressed state for a long time, and the service life of the steel wire rope is prolonged.
Drawings
Fig. 1 is a schematic view of a marine material hanging hook locking mechanism according to an embodiment of the present invention in a hanging operation;
fig. 2 is a schematic view showing a state in which a marine material hanging hook locking mechanism according to an embodiment of the present invention locks a hook;
FIG. 3 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged partial cross-sectional view at B in FIG. 2;
FIG. 5 is a top view of a cushioning assembly according to an embodiment of the present invention;
fig. 6 is a front view of a structure of a hook according to an embodiment of the invention.
In the figure:
1. a suspension arm; 11. a mounting groove; 12. a support plate;
2. a buffer assembly; 21. a spring base; 22. a bottom plate; 221. a slider; 222. hanging plate through holes; 223. wire rope via holes; 23. a cushion pad;
3. a locking assembly; 31. a latch device;
4. a lifting hook; 41. a hanging seat; 411. a hanging plate; 42. a hook body;
100. a fastener; 101. a bolt; 102. a nut; 103. and a gasket.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-6, the invention provides a marine material hanging hook locking mechanism, which comprises a hanging arm 1, a buffer component 2, a locking component 3 and a hanging hook 4. The bottom end of the suspension arm 1 is provided with a mounting groove 11 with a downward notch; the cushioning assembly 2 includes a spring base 21, a base plate 22 and a cushioning pad 23. The spring base 21 is arranged on the suspension arm 1, a spring is arranged in the spring base 21, and one end of the spring is fixedly connected with the spring base 21; a sliding piece 221 is fixedly arranged on the bottom plate 22, one end of the sliding piece 221, which is far away from the bottom plate 22, extends into the spring base 21 and is fixedly connected with the other end of the spring, and a hanging plate through hole 222 is formed in the bottom plate 22; the cushion pad 23 is made of an elastic material and is laid on the bottom plate 22, and in this embodiment, the cushion pad 23 is preferably a rubber pad made of rubber. The locking assembly 3 comprises a bolt device 31, and the bolt device 31 is fixedly connected with the suspension arm 1; the lifting hook 4 comprises a lifting seat 41 and a hook body 42, the hook body 42 is arranged at the bottom of the lifting seat 41, the top surface of the lifting seat 41 is matched with the shape of the bottom plate 22, and a hanging plate 411 is arranged on the lifting seat 41; when the lifting hook 4 is retracted, the hanging plate 411 extends into the hanging plate through hole 222, the bolt device 31 is locked with the hanging plate 411, and the hanging seat 41 is abutted with the cushion pad 23.
In this embodiment, as shown in fig. 3, when the hook 4 is in a lifting operation state, the spring in the spring base 21 is stressed and stretched, the bottom plate 22 is separated from the mounting groove 11, when the hook 4 is fixed after being used, the wire rope is pulled up to drive the hook 4 to move upwards, the hanging seat 41 is abutted with the cushion pad 23, the hanging plate 411 stretches into the hanging plate through hole 222, the bottom plate 22 is lifted into the mounting groove 11, the spring in the spring base 21 is stressed and compressed, and when the hanging seat 41 is lifted to a proper position, the latch device 31 is started to be locked with the hanging plate 411 to fix the hook 4 and the hanging arm 1. In this embodiment, the buffer pad 23 can effectively slow down the impact force of the hanger 41 during the recovery, and when the latch device 31 is locked and fixed with the hanging plate 411, the spring in the spring base 21 provides a resilience force for the buffer pad 23, so as to ensure the close contact of the suspension arm 1, the suspension arm 4 and the buffer pad 23 in a fixed state, and no loosening phenomenon occurs. In addition, when the lifting hook 4 and the lifting arm 1 are fixed through the bolt device 31, the brake device on the original material crane can be loosened, so that the steel wire rope is prevented from being in a stressed state for a long time, and the service life of the steel wire rope is prolonged.
Optionally, a wire rope via 223 is provided in the base plate 22 for the wire rope to pass through. In this embodiment, as shown in fig. 5, both inclined sides of the bottom plate 22 are provided with wire rope vias 223, which facilitate the arrangement of the wire ropes.
Optionally, the latch device 31 in this embodiment is a hydraulic or electric telescopic latch device, and the latch device 31 is a common component in the art, and the specific structure and principle thereof are not described in this embodiment.
Optionally, two support plates 12 are disposed on the boom 1 at intervals, and when the hanging plate 411 extends into the hanging plate through hole 222, the hanging plate 411 is inserted between the two support plates 12, and the latch device 31 inserts and fixes the hanging plate 411 and the two support plates 12. In this embodiment, as shown in fig. 4, two support plates 12 are disposed on the suspension arm 1 at intervals, when the suspension hook 4 is fixed, the latch ends of the latch device 31 pass through the hanging plate 411 and the two support plates 12, and the two support plates 12 are set up on two sides of the hanging plate 411, so that the latch ends of the latch device 31 can be effectively prevented from bending due to uneven stress, and the locking stability is ensured.
Optionally, a remote control module is disposed in the latch device 31, and the remote control module can control the start and stop of the latch device 31. In this embodiment, when the lifting hook 4 is lifted in place, the remote control module is arranged in the latch device 31, so that a shipman can remotely control the latch end of the latch device 31 to extend into or out of the hanging plate 411 and the two support plates 12, and lock or unlock the lifting hook 4, thereby being convenient and guaranteeing the operation safety of the shipman on the deck.
Alternatively, as shown in FIG. 3, the cushion 23 is fixedly coupled to the base 22 by a plurality of fasteners 100. The fastener 100 comprises a bolt 101, a nut 102 and a washer 103, wherein a counter bore is formed in the buffer cushion 23, the bolt 101 stretches into the counter bore, one end of the bolt 101 is in threaded connection with the bottom plate 22, and the other end of the bolt is in threaded connection with the nut 102, and the washer 103 is sleeved on the bolt 101. The cushion pad 23 and the bottom plate 22 in this embodiment are detachably connected by a plurality of fasteners 100, so that the cushion pad 23 can be overhauled and replaced conveniently.
Alternatively, the top surfaces of the base plate 22 and the hanger 41 are isosceles trapezoids. The shape of the bottom plate 22 in this embodiment is matched with the shape of the top surface of the hanging seat 41, and the shape of the cushion pad 23 is also matched with the shape of the bottom plate 22, and is not limited to the isosceles trapezoid shown in the drawings of this embodiment, and the other shapes such as the cone shape and the like are matched with each other, so that the shape of the cushion pad is also suitable for being folded and unfolded.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A marine material hanging hook locking mechanism, comprising:
the lifting arm (1), wherein the bottom end of the lifting arm (1) is provided with a mounting groove (11) with a downward notch;
a cushioning assembly (2), the cushioning assembly (2) comprising:
the suspension arm comprises a suspension arm (1), a spring base (21), a suspension arm and a suspension arm, wherein the spring base (21) is arranged on the suspension arm (1), and one end of the spring is fixedly connected with the spring base (21);
the bottom plate (22), fixedly mounting a sliding part (221) on the bottom plate (22), wherein one end of the sliding part (221) far away from the bottom plate (22) stretches into the spring base (21) and is fixedly connected with the other end of the spring, and a hanging plate through hole (222) is formed in the bottom plate (22);
a cushion pad (23), wherein the cushion pad (23) is made of elastic material and is laid on the bottom plate (22);
the locking assembly (3), the locking assembly (3) comprises a bolt device (31), and the bolt device (31) is fixedly connected with the suspension arm (1);
the lifting hook (4), the lifting hook (4) comprises a hanging seat (41) and a hook body (42), the hook body (42) is arranged at the bottom of the hanging seat (41), the top surface of the hanging seat (41) is matched with the shape of the bottom plate (22), and a hanging plate (411) is arranged on the hanging seat (41); the lifting arm is characterized in that two supporting plates (12) are arranged on the lifting arm (1) at intervals, when the lifting hook (4) is retracted, the hanging plate (411) stretches into the hanging plate through holes (222) and is inserted between the two supporting plates (12), the hanging plate (411) and the two supporting plates (12) are fixedly inserted by the bolt device (31), and the lifting seat (41) is in butt joint with the buffer cushion (23).
2. The marine material hanger locking mechanism of claim 1, wherein the base plate (22) is provided with a wire rope via (223) for a wire rope to pass through.
3. Marine material hanger locking mechanism according to claim 1, characterized in that the bolt means (31) are hydraulic or electric telescopic bolt means.
4. Marine material lifting hook locking mechanism according to claim 1, characterized in that a remote control module is arranged in the bolt device (31), which remote control module is capable of controlling the start and stop of the bolt device (31).
5. The marine material hanger locking mechanism of claim 1, wherein the cushion pad (23) is fixedly connected to the base plate (22) by a plurality of fasteners (100).
6. The marine material hanging hook locking mechanism according to claim 5, wherein the fastener (100) comprises a bolt (101) and a nut (102), the buffer pad (23) is provided with a counter bore, the bolt (101) stretches into the counter bore, one end of the bolt is in threaded connection with the bottom plate (22), and the other end of the bolt is in threaded connection with the nut (102).
7. The marine material hanger locking mechanism of claim 6, wherein the fastener (100) further comprises a washer (103), the washer (103) being sleeved on the bolt (101).
8. The marine material hanger locking mechanism of claim 1, wherein the bottom plate (22) and the top surface of the hanger bracket (41) are isosceles trapezoids in shape.
9. The marine material hanger locking mechanism of claim 1, wherein the material of the cushion pad (23) is rubber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111247890.2A CN113896094B (en) | 2021-10-26 | 2021-10-26 | Marine material hanging hook locking mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111247890.2A CN113896094B (en) | 2021-10-26 | 2021-10-26 | Marine material hanging hook locking mechanism |
Publications (2)
Publication Number | Publication Date |
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CN113896094A CN113896094A (en) | 2022-01-07 |
CN113896094B true CN113896094B (en) | 2024-01-30 |
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CN202111247890.2A Active CN113896094B (en) | 2021-10-26 | 2021-10-26 | Marine material hanging hook locking mechanism |
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CN (1) | CN113896094B (en) |
Families Citing this family (1)
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CN116835432B (en) * | 2023-09-01 | 2023-12-22 | 天津津岛船务有限公司 | Lifting hook of marine crane and use method thereof |
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CN202449766U (en) * | 2012-01-04 | 2012-09-26 | 三一汽车起重机械有限公司 | Arm head hook assembly of truck-mounted crane as well as truck-mounted crane |
CN206511847U (en) * | 2017-01-22 | 2017-09-22 | 大连鑫宏利船舶工程有限公司 | A kind of anti-roll device of ship's crane |
CN206538108U (en) * | 2016-12-30 | 2017-10-03 | 中铁十四局集团第二工程有限公司 | Suspension hook anti-fall device |
CN209702117U (en) * | 2018-12-18 | 2019-11-29 | 浙江博阳建设有限公司 | A kind of suspension hook is rushed to summit falling proof device |
CN210682962U (en) * | 2019-10-30 | 2020-06-05 | 泰安古河随车起重机有限公司 | Hook anti-unhooking device on crane |
CN212050223U (en) * | 2020-04-20 | 2020-12-01 | 微特技术有限公司 | Height limiting protection device for movable arm type crane |
CN213537043U (en) * | 2020-11-17 | 2021-06-25 | 河南省中原奥起实业有限公司 | Electric single-beam bridge crane |
CN213923856U (en) * | 2020-12-17 | 2021-08-10 | 河南金基业重工有限公司 | Anti-ejection limiter of electric hoist |
-
2021
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN202449766U (en) * | 2012-01-04 | 2012-09-26 | 三一汽车起重机械有限公司 | Arm head hook assembly of truck-mounted crane as well as truck-mounted crane |
CN206538108U (en) * | 2016-12-30 | 2017-10-03 | 中铁十四局集团第二工程有限公司 | Suspension hook anti-fall device |
CN206511847U (en) * | 2017-01-22 | 2017-09-22 | 大连鑫宏利船舶工程有限公司 | A kind of anti-roll device of ship's crane |
CN209702117U (en) * | 2018-12-18 | 2019-11-29 | 浙江博阳建设有限公司 | A kind of suspension hook is rushed to summit falling proof device |
CN210682962U (en) * | 2019-10-30 | 2020-06-05 | 泰安古河随车起重机有限公司 | Hook anti-unhooking device on crane |
CN212050223U (en) * | 2020-04-20 | 2020-12-01 | 微特技术有限公司 | Height limiting protection device for movable arm type crane |
CN213537043U (en) * | 2020-11-17 | 2021-06-25 | 河南省中原奥起实业有限公司 | Electric single-beam bridge crane |
CN213923856U (en) * | 2020-12-17 | 2021-08-10 | 河南金基业重工有限公司 | Anti-ejection limiter of electric hoist |
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