CN116199121B - Overload alarm control device for mechanical hoisting equipment - Google Patents
Overload alarm control device for mechanical hoisting equipment Download PDFInfo
- Publication number
- CN116199121B CN116199121B CN202310449445.7A CN202310449445A CN116199121B CN 116199121 B CN116199121 B CN 116199121B CN 202310449445 A CN202310449445 A CN 202310449445A CN 116199121 B CN116199121 B CN 116199121B
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- Prior art keywords
- control box
- plate
- wall
- fixedly connected
- side wall
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Classifications
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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
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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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
- 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
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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
- 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
- B66C1/40—Crane hooks formed or fitted with load measuring or indicating devices
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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
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
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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
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses an overload alarm control device of mechanical hoisting equipment, which relates to the technical field of electric rollers, wherein the upper side wall of a control box is fixedly connected with a pull ring, the front wall of the control box is provided with an indicator through two connecting mechanisms, the front wall of the indicator is provided with an alarm lamp and a buzzer, the alarm lamp and the buzzer are electrically connected with a battery module arranged on the inner wall of the control box, the lower side wall of the control box is slidably inserted with a connecting rod, the lower end of the connecting rod is connected with a hook, and an automatic folding mechanism is arranged between the hook and the control box. According to the invention, through the actions of the alarm lamp and the buzzer, a certain reminding function can be achieved when the crane is overloaded, and the alarm value can be adjusted by adjusting the height of the second conductive block, so that the effect of adjusting the overload alarm value of the control box is achieved, and meanwhile, the indicator is convenient to mount and dismount, and is convenient to maintain and replace.
Description
Technical Field
The invention relates to the technical field of electric rollers, in particular to an overload alarm control device of mechanical hoisting equipment.
Background
In engineering construction installation and demolition engineering, mechanical hoisting equipment is often required, and although the plaintext prescribes 'ten-not-hung', on-site illegal operations occur occasionally, so that personnel and equipment are lost.
In the hoisting process, the weight of the hoisted object is known to be unclear by a maintenance worker, so that overload use is caused, the overload weight can squeeze and stress deformation on structural members of the hoisting device, and even the hoisting device is tilted, so that equipment damage and personal safety accidents are caused.
Disclosure of Invention
The invention aims to solve the problems in the background technology and provides an overload alarm control device for mechanical hoisting equipment.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a mechanical hoisting equipment overload alarm control device, includes the control box, the last lateral wall fixedly connected with pull ring of control box, and the front wall of control box installs the indicator through two coupling mechanism, alarm lamp and bee calling organ are installed to the front wall of indicator, alarm lamp and bee calling organ electric connection have the battery module of installing on the control box inner wall, the lower lateral wall slip of control box is inserted and is equipped with the connecting rod, the lower extreme of connecting rod is connected with the couple, be equipped with automatic folding mechanism between couple and the control box, the connecting rod is located the one end fixedly connected with connecting plate of control box, all be equipped with buffer gear between the both ends of connecting plate and the both sides inner wall of control box, the last lateral wall fixedly connected with quarter butt of connecting plate, quarter butt outer wall movable sleeve is equipped with the regulating plate, conducting block one and conducting block two are installed respectively to one side lateral wall that quarter butt and regulating plate are relative, be equipped with adjustment mechanism between regulating plate and the control box.
Preferably, the automatic folding mechanism comprises a fixed plate fixedly sleeved on the outer wall of the connecting rod, the lower side of the fixed plate is jointly connected with a movable plate through two telescopic rods, one side wall opposite to the movable plate and the fixed plate is respectively and fixedly connected with a magnetic block and an electromagnet, a first spring is jointly connected between the movable plate and the fixed plate, the lower side wall of the movable plate is fixedly connected with a toothed plate, and the lower end of the connecting rod is provided with a gear which is fixedly connected with the upper end of the hook and meshed with the toothed plate.
Preferably, the adjusting mechanism comprises a threaded cylinder fixedly connected to the end part of the adjusting plate, a screw rod installed on the inner top wall of the control box is connected to the upper end of the threaded cylinder in a threaded manner, a worm wheel is fixedly sleeved on the outer wall of the screw rod, a worm penetrating through the side wall of the control box is meshed with the outer side of the worm wheel, and a knob is fixedly connected to one end of the worm located outside the control box.
Preferably, the buffer gear is including rotating the buffer board of connecting on the control box inner wall, be connected with two buffer springs jointly between the inner wall of buffer board and control box, the grinding wheel of roll setting on the buffer board lateral wall is installed to the tip of connecting plate.
Preferably, the connecting mechanism comprises a rotating plate which is rotationally connected to the front wall of the control box, a second spring is jointly connected between the rotating plate and the control box, a first clamping block and a second clamping block are respectively and fixedly connected to the side wall of one side, opposite to the rotating plate and the indicator, of the rotating plate, and the side wall of one side, opposite to the first clamping block and the side wall of the second clamping block, of the rotating plate are cambered surfaces.
Preferably, a spring III movably sleeved on the outer wall of the connecting rod is commonly connected between the connecting plate and the inner bottom wall of the control box.
Preferably, the side walls of the two opposite sides of the buffer plate are fixedly connected with a sand grinding plate.
Preferably, the front wall of the control box is provided with a mounting groove matched with the indicator.
Compared with the prior art, the overload alarm control device for the mechanical hoisting equipment has the advantages that:
the two rotating plates are shifted back to back so that the two clamping blocks I can move back to back, the indicator can be taken down to detach the indicator, the maintenance and the replacement are convenient, and the indicator is inserted into the mounting groove during the mounting, so that the clamping blocks II and the clamping blocks I can quickly rotate to clamp the two clamping blocks II under the action of the springs II, and the indicator can be quickly mounted;
when the lifting object is overloaded, the connecting rod drives the right-angle rod to move downwards until the first conductive block is contacted with the second conductive block, at the moment, the power supply of the alarm lamp and the buzzer is switched on, and then the alarm lamp and the buzzer start to emit light and alarm sound, so that a certain reminding effect is achieved;
when the lifting object is overloaded to enable the first conductive block to be in contact with the second conductive block, the electromagnet is electrified to repel the magnetic block to enable the movable plate to move downwards, so that the toothed plate is driven to move downwards to be meshed with the gear, and the gear and the hook are driven to rotate anticlockwise together, so that the hook is separated from the lifting object, the lifting object is not lifted, and the device is effectively protected;
the knob is rotated to enable the worm to drive the screw rod to rotate through the worm wheel meshed with the screw rod, so that the threaded cylinder and the adjusting plate are driven to synchronously move up and down along the surface of the right-angle rod, and the alarming value can be adjusted by adjusting the height of the second conductive block, so that the effect of adjusting the overload alarming value of the control box is achieved;
when the lifting object is lifted, the connecting rod drives the connecting plate to move downwards relatively, so that each grinding wheel rolls along the surfaces of the two grinding plates respectively and extrudes the two buffer plates, and then the buffer effect on the lifting object on the hook can be achieved under the reaction force of each buffer spring, and the lifting object and the control box are protected;
in summary, the invention can play a certain reminding role when the lifting object is overloaded through the actions of the alarm lamp and the buzzer, and can adjust the alarm value through adjusting the height of the second conductive block, thereby achieving the effect of adjusting the overload alarm value of the control box, and simultaneously being convenient for installing and detaching the indicator and being convenient for maintenance and replacement.
Drawings
FIG. 1 is a schematic diagram of an overload alarm control device for a mechanical lifting device according to the present invention;
FIG. 2 is an external view of an overload alarm control device for a mechanical lifting device according to the present invention;
fig. 3 is a bottom view of the cooperation part of the control box, the indicator and the buzzer in the overload alarm control device of the mechanical lifting equipment.
In the figure: 1. a control box; 2. a pull ring; 3. an indicator; 4. an alarm lamp; 5. a buzzer; 6. a connecting rod; 7. a hook; 8. a connecting plate; 9. a right angle lever; 10. a first conductive block; 11. an adjusting plate; 12. a second conductive block; 13. a thread cylinder; 14. a battery module; 15. a fixing plate; 16. a telescopic rod; 17. a moving plate; 18. a first spring; 19. a magnetic block; 20. an electromagnet; 21. a toothed plate; 22. a gear; 23. a rotating plate; 24. a second spring; 25. a clamping block I; 26. a worm; 27. a knob; 28. a screw rod; 29. a worm wheel; 30. a buffer plate; 31. a buffer spring; 32. a sanding plate; 33. grinding wheel; 34. a clamping block II; 35. and a third spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-3, an overload alarm control device for mechanical lifting equipment comprises a control box 1, wherein a pull ring 2 is fixedly connected to the upper side wall of the control box 1, and the pull ring 2 is connected with a lifting end of the lifting device.
The front wall of the control box 1 is provided with an indicator 3 through two connecting mechanisms, the front wall of the control box 1 is provided with a mounting groove matched with the indicator 3, the front wall of the indicator 3 is provided with an alarm lamp 4 and a buzzer 5, the connecting mechanisms comprise rotating plates 23 which are rotatably connected to the front wall of the control box 1, springs II 24 are jointly connected between the rotating plates 23 and the control box 1, clamping blocks I25 and clamping blocks II 34 are fixedly connected to the side walls of the rotating plates 23 opposite to the indicator 3 respectively, the side walls of the clamping blocks I25 and the clamping blocks II 34 are cambered surfaces, the two rotating plates 23 can be shifted back to enable the two clamping blocks I25 to move back to back until the two clamping blocks II 34 are completely separated from the two clamping blocks II 34, the indicator 3 can be removed for disassembly, maintenance and replacement are facilitated, and during installation, the cambered surfaces of the clamping blocks II 34 are enabled to move along the cambered surfaces of the clamping blocks I25 until the two clamping blocks II 25 are pushed to drive the two rotating plates II 24 to move back to each other, each spring II 24 is compressed, and when the two clamping blocks 25 are positioned on the same side as the two clamping blocks 1, and the two clamping blocks 34 can be quickly rotated under the two clamping blocks 24, and the effect of the two clamping blocks 3 can be quickly rotated and rapidly.
The alarm lamp 4 and the buzzer 5 are electrically connected with the battery module 14 installed on the inner wall of the control box 1, the connecting rod 6 is inserted in a sliding manner in the lower side wall of the control box 1, the lower end of the connecting rod 6 is connected with the hook 7, one end of the connecting rod 6 located in the control box 1 is fixedly connected with the connecting plate 8, the connecting plate 8 and the inner bottom wall of the control box 1 are jointly connected with the spring III 35 movably sleeved on the outer wall of the connecting rod 6, during use, a lifting object is hung on the hook 7, then the lifting device is controlled to lift the lifting object, at the moment, under the action of gravity of the lifting object, the connecting rod 6 can move downwards relative to the control box 1, the first conductive block 10 and the second conductive block 12 are respectively installed on one side wall of the right-angle rod 9 and the adjusting plate 11, if the lifting object is overloaded, the connecting rod 6 can drive the right-angle rod 9 to move downwards until the first conductive block 10 and the second conductive block 12 are contacted, at the moment, the power supply of the alarm lamp 4 and the buzzer 5 is switched on, and the alarm lamp 4 and the buzzer 5 begin to emit light and sound to play a certain reminding role.
An automatic folding mechanism is arranged between the hook 7 and the control box 1, the automatic folding mechanism comprises a fixed plate 15 fixedly sleeved on the outer wall of the connecting rod 6, the lower side of the fixed plate 15 is jointly connected with a movable plate 17 through two telescopic rods 16, the side walls of one side opposite to the movable plate 17 and the fixed plate 15 are respectively fixedly connected with a magnetic block 19 and an electromagnet 20, a first spring 18 is jointly connected between the movable plate 17 and the fixed plate 15, the lower side wall of the movable plate 17 is fixedly connected with a toothed plate 21, the lower end of the connecting rod 6 is provided with a gear 22 fixedly connected to the upper end of the hook 7 and meshed with the toothed plate 21, the upper side wall of the connecting plate 8 is fixedly connected with a right-angle rod 9, the outer wall of the right-angle rod 9 is movably sleeved with an adjusting plate 11, when the first conductive block 10 and the second conductive block 12 are contacted, the electromagnet 20 is electrified to repel the magnetic block 19 so that the movable plate 17 moves downwards, the toothed plate 21 is driven to be meshed with the gear 22, and the gear 22 is driven to rotate anticlockwise together with the hook 7, so that the hook 7 is separated from a heavy object, and the object is not lifted, and the device is effectively protected.
An adjusting mechanism is arranged between the adjusting plate 11 and the control box 1, the adjusting mechanism comprises a threaded cylinder 13 fixedly connected to the end part of the adjusting plate 11, a screw rod 28 arranged on the inner top wall of the control box 1 is connected to the upper end of the threaded cylinder 13 in a threaded manner, a worm wheel 29 is fixedly sleeved on the outer wall of the screw rod 28, a worm 26 penetrating through the side wall of the control box 1 is meshed with the outer side of the worm wheel 29, a knob 27 is fixedly connected to one end of the worm 26 outside the control box 1, the knob 27 can be rotated, the worm 26 drives the screw rod 28 to rotate through the worm wheel 29 meshed with the worm 26, and accordingly the threaded cylinder 13 and the adjusting plate 11 are driven to synchronously move up and down along the surface of the right-angle rod 9, and the alarm value is adjusted by the height of the second adjustable conductive block 12, so that the overload alarm value of the control box 1 is adjusted.
The buffer mechanism is arranged between the two ends of the connecting plate 8 and the inner walls of the two sides of the control box 1, the buffer mechanism comprises a buffer plate 30 which is rotationally connected to the inner wall of the control box 1, two buffer springs 31 are jointly connected between the buffer plate 30 and the inner wall of the control box 1, grinding wheels 33 which are arranged on the side walls of the buffer plate 30 in a rolling mode are installed at the end portions of the connecting plate 8, grinding plates 32 are fixedly connected to the side walls of the two opposite sides of the buffer plate 30, when a crane is lifted, the connecting rod 6 can drive the connecting plate 8 to move downwards relatively, so that each grinding wheel 33 rolls along the surfaces of the two grinding plates 32 respectively, the two buffer plates 30 are extruded to enable each buffer spring 31 to generate elastic deformation, then the movement of the connecting plate 8 is blocked under the reaction force of each buffer spring 31, the buffer effect of lifting weights on the hooks 7 is achieved, and the crane and the control box 1 is protected.
Further, the above-described fixed connection is to be understood in a broad sense, unless explicitly stated and defined otherwise, as being, for example, welded, glued, or integrally formed, as is well known to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a mechanical hoisting equipment overload alarm control device, includes control box (1), its characterized in that, the upper side wall fixedly connected with pull ring (2) of control box (1), and the front wall of control box (1) installs indicator (3) through two coupling mechanism, alarm lamp (4) and bee calling organ (5) are installed to the front wall of indicator (3), alarm lamp (4) and bee calling organ (5) electric connection have battery module (14) of installing on control box (1) inner wall, the lower lateral wall slip of control box (1) is inserted and is equipped with connecting rod (6), the lower extreme of connecting rod (6) is connected with couple (7), be equipped with automatic folding mechanism between couple (7) and control box (1), one end fixedly connected with connecting plate (8) that connecting rod (6) are located control box (1), all be equipped with buffer gear between the both ends of connecting plate (8) and the both sides inner wall of control box (1), the upper side wall fixedly connected with right angle pole (9) of connecting plate (8), right angle pole (9) are equipped with connecting plate (11) and two opposite side wall (11) of right angle pole (11) are installed respectively, an adjusting mechanism is arranged between the adjusting plate (11) and the control box (1);
the automatic folding mechanism comprises a fixed plate (15) fixedly sleeved on the outer wall of a connecting rod (6), the lower side of the fixed plate (15) is connected with a movable plate (17) through two telescopic rods (16) together, a magnetic block (19) is fixedly connected to the side wall of the movable plate (17), an electromagnet (20) is fixedly connected to the side wall of the fixed plate (15), a first spring (18) is commonly connected between the movable plate (17) and the fixed plate (15), the lower side wall of the movable plate (17) is fixedly connected with a toothed plate (21), and a gear (22) fixedly connected to the upper end of a hook (7) and meshed with the toothed plate (21) is arranged at the lower end of the connecting rod (6);
the adjusting mechanism comprises a threaded cylinder (13) fixedly connected to the end part of the adjusting plate (11), a screw rod (28) mounted on the inner top wall of the control box (1) is connected to the upper end of the threaded cylinder (13) in a threaded manner, a worm wheel (29) is fixedly sleeved on the outer wall of the screw rod (28), a worm (26) penetrating through the side wall of the control box (1) is meshed with the outer side of the worm wheel (29), and a knob (27) is fixedly connected to one end of the worm (26) located outside the control box (1);
the buffer mechanism comprises a buffer plate (30) rotatably connected to the inner wall of the control box (1), two buffer springs (31) are connected between the buffer plate (30) and the inner wall of the control box (1), and a grinding wheel (33) arranged on the side wall of the buffer plate (30) in a rolling manner is arranged at the end part of the connecting plate (8);
the connecting mechanism comprises a rotating plate (23) rotatably connected to the front wall of the control box (1), a second spring (24) is connected between the rotating plate (23) and the control box (1), a first clamping block (25) is fixedly connected to the side wall of the rotating plate (23), a second clamping block (34) is fixedly connected to the side wall of the indicator (3), and the side walls of the first clamping block (25) and the second clamping block (34) are opposite to each other and are cambered surfaces;
a spring III (35) movably sleeved on the outer wall of the connecting rod (6) is connected between the connecting plate (8) and the inner bottom wall of the control box (1).
2. The overload alarm and control device for mechanical lifting equipment according to claim 1, wherein the side walls of the opposite sides of the two buffer plates (30) are fixedly connected with grinding plates (32).
3. The overload alarm control device for mechanical lifting equipment according to claim 1, wherein the front wall of the control box (1) is provided with a mounting groove matched with the indicator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449445.7A CN116199121B (en) | 2023-04-25 | 2023-04-25 | Overload alarm control device for mechanical hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449445.7A CN116199121B (en) | 2023-04-25 | 2023-04-25 | Overload alarm control device for mechanical hoisting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116199121A CN116199121A (en) | 2023-06-02 |
| CN116199121B true CN116199121B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310449445.7A Active CN116199121B (en) | 2023-04-25 | 2023-04-25 | Overload alarm control device for mechanical hoisting equipment |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1250897A (en) * | 1968-05-22 | 1971-10-20 | ||
| JPH08244646A (en) * | 1995-03-13 | 1996-09-24 | Yanmar Agricult Equip Co Ltd | Operation part structure of hydraulic traveling agricultural machinery |
| JP2010280485A (en) * | 2009-06-08 | 2010-12-16 | Tcm Corp | Vehicle equipped with crane |
| CN105347181A (en) * | 2015-12-07 | 2016-02-24 | 南开大学 | Automatic lifting hook system |
| CN211521361U (en) * | 2019-11-18 | 2020-09-18 | 中国铁道科学研究院集团有限公司 | Unbalance loading detection device and container loading system |
| CN213231212U (en) * | 2020-09-17 | 2021-05-18 | 山东泰沃重工有限公司 | Overload limiter device of bridge crane |
| CN216072842U (en) * | 2021-09-08 | 2022-03-18 | 南通现代建筑产业发展有限公司 | Assembly type PC component hoisting system based on BIM technology |
-
2023
- 2023-04-25 CN CN202310449445.7A patent/CN116199121B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1250897A (en) * | 1968-05-22 | 1971-10-20 | ||
| JPH08244646A (en) * | 1995-03-13 | 1996-09-24 | Yanmar Agricult Equip Co Ltd | Operation part structure of hydraulic traveling agricultural machinery |
| JP2010280485A (en) * | 2009-06-08 | 2010-12-16 | Tcm Corp | Vehicle equipped with crane |
| CN105347181A (en) * | 2015-12-07 | 2016-02-24 | 南开大学 | Automatic lifting hook system |
| CN211521361U (en) * | 2019-11-18 | 2020-09-18 | 中国铁道科学研究院集团有限公司 | Unbalance loading detection device and container loading system |
| CN213231212U (en) * | 2020-09-17 | 2021-05-18 | 山东泰沃重工有限公司 | Overload limiter device of bridge crane |
| CN216072842U (en) * | 2021-09-08 | 2022-03-18 | 南通现代建筑产业发展有限公司 | Assembly type PC component hoisting system based on BIM technology |
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| Publication number | Publication date |
|---|---|
| CN116199121A (en) | 2023-06-02 |
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