Auxiliary lifting system for crane and crane
By designing a secondary lifting system for cranes, the problem of low efficiency of large-tonnage cranes when lifting cargo with smaller weight is solved, achieving more efficient lifting and reducing equipment usage costs.
Patent Information
- Application Number
- CN202422341552.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-24
AI Technical Summary
When lifting cargo with smaller weight, large-tonnage cranes have low lifting efficiency and need to switch cranes of different tonnages to adapt to different load conditions, resulting in higher costs.
A secondary lifting system for cranes is designed, including secondary lifting mechanism, secondary support wheel assembly and secondary lifting wheel assembly, which can be installed independently on the crane, providing faster rotation speeds to improve lifting efficiency, and adapting to different loads through switchable operating modes and transportation modes.
It effectively improves lifting efficiency, reduces the cost of equipment use, and does not need to switch cranes of different tonnages to adapt to working conditions of different loads.
Smart Images
Figure CN222974775U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of hoisting machinery, and particularly relates to a auxiliary hoisting system for a crane and a crane. Background Art
[0002] Currently, most luffing cranes in the industry are only equipped with one set of hoisting systems, especially luffing tower cranes. Compared with small-tonnage cranes, the hoisting systems of large-tonnage cranes have a slower rotation speed. If a large-tonnage crane is used to lift goods with a small weight, the hoisting efficiency will be reduced. Therefore, when facing working conditions with different loads, it is necessary to switch cranes of different tonnages to achieve the corresponding hoisting speed, but multiple cranes need to be equipped on site, resulting in a high cost. Summary of the Utility Model
[0003] In view of the above-mentioned at least one defect or deficiency of the prior art, this application provides an auxiliary hoisting system for a crane and a crane, which is applicable to the hoisting working conditions of smaller loads, improves the hoisting efficiency, and effectively reduces the equipment use cost.
[0004] To achieve the above object, on the one hand, this application provides an auxiliary hoisting system for a crane, including:
[0005] An auxiliary hoisting mechanism, which is used to be arranged on one side of the main hoisting mechanism of the crane and is used for winding and unwinding an auxiliary hoisting wire rope;
[0006] An auxiliary support wheel assembly, which is used to be fixedly arranged at the head of the boom tip structural member of the crane and includes an auxiliary support wheel; and
[0007] An auxiliary hoisting wheel assembly, which is used to be fixedly arranged at the head of the boom tip structural member and includes an auxiliary hoisting wheel located below the auxiliary support wheel;
[0008] Wherein, the winding and unwinding section of the auxiliary hoisting wire rope bypasses the auxiliary support wheel and extends downward and presses against the outer rim of the auxiliary hoisting wheel.
[0009] In some embodiments, the auxiliary support wheel assembly further includes a load limiter for detecting the hoisting weight of the crane.
[0010] In some embodiments, the bottom of the load limiter is used to be fixedly connected to the inner web member of the boom tip structural member. The auxiliary support wheel assembly further includes a support lever. The two ends of the support lever are respectively formed as a lever head end and a lever tail end. The lever head end is rotatably connected to the auxiliary hoisting wheel, the lever tail end is connected to the top of the load limiter, and the middle part of the support lever is used to be hinged to the outer web member of the boom tip structural member.
[0011] In some embodiments, the auxiliary hoisting wheel assembly further includes a swing arm. The two ends of the swing arm are respectively formed as a swing arm hinge end and a swing arm swing end. The swing arm swing end is rotatably connected to the auxiliary hoisting wheel, and the swing arm hinge end is used to form a hinge connection with the head of the boom tip structural member;
[0012] Wherein, the auxiliary hoisting wheel assembly includes an operation mode and a transportation mode that can be switched with each other; in the operation mode, the swing arm can be in a freely swinging-down state; in the transportation mode, the swing arm can be in a horizontally swinging-up state.
[0013] In some embodiments, the auxiliary hoisting wheel assembly further includes a first pin shaft, a second pin shaft, and an end face ear plate for being arranged on the head end face of the boom tip structural member. The end face ear plate is provided with an ear plate hinge hole and an ear plate arc-shaped slot hole that are spaced apart from each other. The first pin shaft is used to penetrate and connect the ear plate hinge hole and the swing arm hinge end, and the second pin shaft is fixedly connected to the outer peripheral wall of the swing arm hinge end; in the operation mode, the second pin shaft can abut against the bottom hole wall of the ear plate arc-shaped slot hole.
[0014] In some embodiments, the auxiliary hoisting wheel assembly further includes a support leg connected to the swing arm swing end. The length by which the support leg extends out of the swing arm swing end is greater than the radius of the auxiliary hoisting wheel so as to be arranged beyond the outer rim of the auxiliary hoisting wheel; in the transportation mode, the support leg is used to support on the placement plane of the boom tip structural member.
[0015] In some embodiments, the support leg is formed as a semi-circular bracket surrounding the auxiliary hoisting wheel.
[0016] In some embodiments, the auxiliary hoisting system further includes an auxiliary ladder for being arranged on the head end face of the boom tip structural member and on one side of the auxiliary hoisting wheel assembly.
[0017] In some embodiments, the upper end and the lower end of the auxiliary ladder are respectively provided with an upper end hinge part and a lower end hanging part, and the upper end hinge part and the lower end hanging part are respectively used for mating and connecting with the end face hinge part and the end face hanging part of the boom tip structural member.
[0018] The second aspect of the present application provides a crane, including the above-mentioned auxiliary hoisting system for a crane.
[0019] Through the above technical solution, the auxiliary hoisting mechanism in the auxiliary hoisting system can be installed on the crane independently of the main hoisting mechanism. The auxiliary hoisting wire rope led out from the auxiliary hoisting mechanism can extend along the boom to the head of the tip section structure member, and then bypass the auxiliary support wheel of the auxiliary support wheel assembly and extend downward. The retractable section extending downward presses against the outer rim of the auxiliary hoisting wheel, so that it can be used to lift goods with a relatively small weight. The rotation speed of the auxiliary hoisting mechanism is faster than that of the main hoisting mechanism, which can effectively improve the hoisting efficiency. When facing different load hoisting conditions, there is no need to switch cranes of different tonnages, effectively reducing the equipment usage cost.
[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:
[0022] Figure 1 It is a schematic diagram of an auxiliary hoisting system for a crane in a specific embodiment of the present application when installed on the tip section structure member;
[0023] Figure 2 is Figure 1 a schematic diagram of the auxiliary support wheel assembly of the auxiliary hoisting system of
[0024] Figure 3 is Figure 1 a schematic diagram of the auxiliary hoisting wheel assembly of the auxiliary hoisting system of
[0025] Figure 4 is Figure 1 a schematic diagram of the auxiliary ladder of the auxiliary hoisting system of
[0026] DESCRIPTION OF THE REFERENCE NUMERALS
[0027] 1 Auxiliary support wheel assembly 2 Auxiliary hoisting wheel assembly
[0028] 3 Auxiliary ladder 4 Tip section structure member
[0029] 101 Auxiliary support wheel 102 Load limiter
[0030] 103 Support lever 201 Auxiliary hoisting wheel
[0031] 202 Swing arm 203 First pin shaft
[0032] 204 Second pin shaft 205 End face ear plate
[0033] 206 Ear plate arc slot hole 207 Support leg
[0034] 301 Upper hinge part 302 Lower hanging part
[0035] 401 Inner web member 402 Outer web member Detailed implementation manners
[0036] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and understanding the present application, and are not used to limit the present application.
[0037] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.
[0038] As Figures 1 to 4 shown, the first exemplary embodiment of the present application provides an auxiliary hoisting system for a crane. The auxiliary hoisting system includes an auxiliary hoisting mechanism (not shown in the drawings), an auxiliary support wheel assembly 1, and an auxiliary hoisting wheel assembly 2. Among them, the auxiliary hoisting mechanism is used to be arranged on one side of the main hoisting mechanism of the crane and is used to wind and unwind the auxiliary hoisting wire rope; the auxiliary support wheel assembly 1 is used to be fixedly arranged at the head of the boom tip section structural member 4 of the crane and includes an auxiliary support wheel 101; the auxiliary hoisting wheel assembly 2 is used to be fixedly arranged at the head of the boom tip section structural member 4 and includes an auxiliary hoisting wheel 201 located below the auxiliary support wheel 101; the winding and unwinding section of the auxiliary hoisting wire rope bypasses the auxiliary support wheel 101 and extends downward and presses against the outer rim of the auxiliary hoisting wheel 201.
[0039] It can be seen that in this exemplary embodiment, the auxiliary hoisting mechanism in the auxiliary hoisting system can be independently installed on the crane relative to the main hoisting mechanism. The auxiliary hoisting wire rope led out from the auxiliary hoisting mechanism can extend along the boom to the head of the boom tip section structural member 4, then bypass the auxiliary support wheel 101 of the auxiliary support wheel assembly 1 and extend downward. The downward extending winding and unwinding section presses against the outer rim of the auxiliary hoisting wheel, so that the auxiliary hoisting hook can be connected, and the goods with a relatively small weight can be lifted by the auxiliary hoisting hook. The rotation speed of the auxiliary hoisting mechanism is relatively faster than that of the main hoisting mechanism, and the hoisting efficiency of the goods can be effectively improved. Generally speaking, when facing different load hoisting working conditions, there is no need to switch cranes of different tonnages, so that the equipment use cost can be effectively reduced.
[0040] In an optional or preferred embodiment, the auxiliary support wheel assembly 1 further includes a load limiter 102 for detecting the hoisting weight of the crane, so as to be able to monitor the load condition of the equipment in real time. Once it is detected that the load exceeds the set safety value, the system will automatically issue an alarm or stop the operation of the equipment, so as to avoid equipment damage or accidents caused by overloading and improve safety.
[0041] Specifically, referring to Figure 2 , the bottom of the lifting capacity limiter 102 is used for fixedly connecting with the inner web member 401 of the boom tip section structure member 4. The auxiliary support wheel assembly 1 further includes a support lever 103. The two ends of the support lever 103 are respectively formed as a lever head end and a lever tail end. The lever head end is rotatably connected with the auxiliary hoist wheel 201. A tail end ear plate may be provided at the lever tail end, and the tail end ear plate can be connected to the top of the lifting capacity limiter 102 through a pin shaft. The middle part of the support lever 103 can be hinged with the outer web member 402 of the boom tip section structure member 4 through a pin shaft. Through the above settings, during the hoisting operation, the auxiliary hoist wheel 201 is subjected to the downward pressure of the auxiliary hoist wire rope. Since the middle part of the support lever 103 is hinged to the outer web member 402, the lever tail end of the support lever 103 has a tendency to move upward, thereby exerting a pulling force on the top of the lifting capacity limiter 102. Since the bottom of the lifting capacity limiter 102 is fixed on the inner web member 401, the forces at both ends of the support lever 103 are balanced at this time. By detecting the magnitude of the above pulling force through the lifting capacity limiter 102, the lifting weight of the auxiliary hoist wire rope at this time can be calculated.
[0042] In an optional or preferred embodiment, the auxiliary hoist wheel assembly 2 further includes a swing arm 202. The two ends of the swing arm 202 are respectively formed as a swing arm hinge end and a swing arm swing end. The swing arm swing end is rotatably connected with the auxiliary hoist wheel 201, and the swing arm hinge end is used for hinging with the head of the boom tip section structure member 4; wherein, the auxiliary hoist wheel assembly 2 includes an operation mode and a transportation mode that can be switched with each other; in the operation mode, the swing arm 202 is in a free downward swing state under its own weight or load, and the side wall of the swing arm hinge end presses against the end face of the head of the boom tip section structure member 4; in the transportation mode, the swing arm 202 can be swung to a horizontal upward swing state, so that the auxiliary hoist wheel 201 is lifted off the ground to avoid abrasion of the auxiliary hoist wheel 201.
[0043] Further, referring to Figure 3 , the auxiliary hoist wheel assembly 2 further includes a first pin shaft 203, a second pin shaft 204, and an end face ear plate 205 for being arranged on the end face of the head of the boom tip section structure member 4. The end face ear plate 205 is provided with an ear plate hinge hole and an ear plate arc slot hole 206 that are spaced apart from each other. The first pin shaft 203 is used for passing through the ear plate hinge hole and the swing arm hinge end, and the second pin shaft 204 is fixedly connected to the outer peripheral wall of the swing arm hinge end; in the operation mode, the swing arm 202 freely swings downward, and the second pin shaft 204 can abut against the bottom hole wall of the ear plate arc slot hole 206. By limiting the second pin shaft 204 through the ear plate arc slot hole 206, the swing of the swing arm 202 can be effectively prevented from affecting the hoisting operation.
[0044] In an optional or preferred embodiment, referring to Figure 3, the auxiliary hoisting wheel assembly 2 further includes a support leg 207 connected to the swinging end of the swing arm. The length by which the support leg 207 extends beyond the swinging end of the swing arm is greater than the radius of the auxiliary hoisting wheel 201, and it is arranged to extend beyond the outer rim of the auxiliary hoisting wheel 201; in the transportation mode, the support leg 207 is used to support on the placement plane of the boom tip section structural member 4, so that the auxiliary hoisting wheel assembly 2 can keep in contact with the ground or other placement planes through the support leg 207, so as to prevent the swing arm 202 from swinging down under the action of gravity and causing the auxiliary hoisting wheel 201 to touch the ground.
[0045] Further, the support leg 207 can be formed into a semi-circular bracket surrounding the auxiliary hoisting wheel 201 as shown in Figure 3 , so as to further effectively protect the auxiliary hoisting wheel 201 from being damaged.
[0046] In an alternative or preferred embodiment, referring to Figure 1 and Figure 4 , the auxiliary hoisting system further includes an auxiliary ladder 3 for being arranged on the head end face of the boom tip section structural member 4 and on one side of the auxiliary hoisting wheel assembly 2. Specifically, the upper end and the lower end of the auxiliary ladder 3 are respectively provided with an upper end hinged part 301 and a lower end hanging part 302, such as a pin shaft or an ear plate. The upper end hinged part 301 and the lower end hanging part 302 are respectively used for cooperating and connecting with the end face hinged part and the end face hanging part of the boom tip section structural member 4. By installing the auxiliary ladder 3 on one side of the auxiliary hoisting wheel assembly 2, it is convenient for the operator to climb to repair and maintain the auxiliary support wheel assembly 1 and the auxiliary hoisting wheel assembly 2.
[0047] The second exemplary embodiment of the present application provides a crane, and this crane includes the above-mentioned auxiliary hoisting system for the crane. Obviously, the crane of this exemplary embodiment has all the technical effects brought by the above-mentioned auxiliary hoisting system, so it will not be elaborated here.
[0048] It should be noted that in the present application, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to above and below in the gravity direction, and "inner" and "outer" refer to the inside and outside of the component.
[0049] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0050] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0051] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0052] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A secondary lifting system for a crane, characterized in that: include: A secondary lifting mechanism, which is arranged on one side of the main lifting mechanism of the crane and is used for retracting and releasing the secondary lifting wire rope; A secondary support wheel assembly (1), used for being fixedly arranged on the head of the boom tip structure (4) of the crane and comprising a secondary support wheel (101); An auxiliary lifting wheel assembly (2), which is used for being fixedly arranged at the head of the arm tip structure (4) and comprises an auxiliary lifting wheel (201) located below the auxiliary supporting wheel (101); and The retractable section of the auxiliary lifting wire rope bypasses the auxiliary support wheel (101), extends downward, and presses against the outer rim of the auxiliary lifting wheel (201).
2. The auxiliary lifting system for a crane according to claim 1, characterized in that: The auxiliary support wheel assembly (1) further comprises a lifting weight limiter (102) for detecting the lifting weight of the crane.
3. The auxiliary lifting system for a crane according to claim 2, characterized in that: The bottom of the lifting weight limiter (102) is used to be fixedly connected to the inner rib (401) of the arm tip structure (4), and the auxiliary support wheel assembly (1) also includes a support lever (103), the two ends of the support lever (103) are respectively formed as a lever head end and a lever tail end, the lever head end is rotatably connected to the auxiliary lifting wheel (201), and the lever tail end is connected to the top of the lifting weight limiter (102), and the middle part of the support lever (103) is used to be hinged with the outer rib (402) of the arm tip structure (4).
4. The auxiliary lifting system for a crane according to claim 1, characterized in that: The auxiliary lifting wheel assembly (2) further comprises a swing arm (202), the two ends of the swing arm (202) being respectively formed as a swing arm hinge end and a swing arm swing end, the swing arm swing end being rotationally connected to the auxiliary lifting wheel (201), and the swing arm hinge end being used to be hinged to the head of the arm tip structure (4); Wherein, the auxiliary lifting wheel assembly (2) includes an operating mode and a transport mode that can be switched between each other; in the operating mode, the swing arm (202) can be in a free downward swinging state; in the transport mode, the swing arm (202) can be in a horizontal upward swinging state.
5. The auxiliary lifting system for a crane according to claim 4, characterized in that: The auxiliary lifting wheel assembly (2) also includes a first pin shaft (203), a second pin shaft (204) and an end face ear plate (205) for being arranged on the head end face of the arm tip structure (4), the end face ear plate (205) is provided with ear plate reaming holes and ear plate arcuate slot holes (206) spaced apart from each other, the first pin shaft (203) is used to pass through the ear plate reaming holes and the swing arm hinge end, the second pin shaft (204) is fixedly connected to the outer peripheral wall of the swing arm hinge end; in the operating mode, the second pin shaft (204) can abut against the bottom hole wall of the ear plate arcuate slot hole (206).
6. The auxiliary lifting system for a crane according to claim 4, characterized in that: The auxiliary lifting wheel assembly (2) also includes a support foot (207) connected to the swing end of the swing arm, and the length of the support foot (207) extending from the swing end of the swing arm is greater than the radius of the auxiliary lifting wheel (201) so as to extend beyond the outer rim of the auxiliary lifting wheel (201); in the transport mode, the support foot (207) is used to support the placement plane of the arm tip structure (4).
7. The auxiliary lifting system for a crane according to claim 6, characterized in that: The support foot (207) is formed as a semi-annular bracket arranged to surround the auxiliary lifting wheel (201).
8. The auxiliary lifting system for a crane according to claim 1, characterized in that: The auxiliary lifting system also includes an auxiliary ladder (3) which is used to be arranged on the head end surface of the arm tip structure (4) and is located on one side of the auxiliary lifting wheel assembly (2).
9. The auxiliary lifting system for a crane according to claim 8, characterized in that: The upper end and the lower end of the auxiliary ladder (3) are respectively provided with an upper end hinged portion (301) and a lower end hanging portion (302), and the upper end hinged portion (301) and the lower end hanging portion (302) are respectively used to cooperate with the end face hinged portion and the end face hanging portion of the arm tip structure (4).
10. A crane, characterized in that: The invention comprises a secondary hoisting system for a crane according to any one of claims 1 to 9.