Traction device for crane
The crane traction device uses a movable pulley and closed-loop hook rope system to distribute lifting force, reducing motor strain and preventing object slippage, thereby extending motor life and improving safety.
Patent Information
- Application Number
- CN202420382797.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-28
AI Technical Summary
Cranes experience increased load and reduced motor service life due to the single rope traction method, which does not distribute the work done evenly, leading to excessive motor strain during lifting operations.
A traction device with a lifting wheel acting as a movable pulley, a mounting frame, and a hook rope system that forms a closed loop to reduce motor workload and prevent object slippage, featuring a positioning mechanism with a docking block and spring-actuated clamping system.
Reduces motor workload by distributing the lifting force, increases motor service life, and enhances safety by preventing object slippage during lifting.
Smart Images
Figure CN222159607U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of enameled wires, in particular to a traction device for a crane. Background Art
[0002] Cranes, also known as overhead cranes, overhead cranes or hoists, are a very important type of equipment in construction machinery. Their main function is to vertically lift and horizontally move heavy objects within a certain range. Cranes play a vital role in modern engineering construction. They not only improve work efficiency, but also ensure the safety of operations. Whether in construction projects, logistics and transportation or industrial production, cranes are indispensable and important equipment.
[0003] Cranes mainly use traction devices to pull and control lifting ropes or traction ropes to achieve operations such as lifting, moving and placing heavy objects. The lifting traction device uses a winch or similar traction equipment to lift the heavy objects to the required height using a rope (wire rope).
[0004] During the traction and lifting process, the driving force is mainly provided by the motor. When the object is pulled by one end of a single rope, the work done in the process will not be reduced, thereby increasing the load and loss of the motor providing the driving force and reducing the service life of the motor. Utility Model Content
[0005] The purpose of the utility model is to provide a traction device for a crane to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a traction device for a crane, comprising a base, support frames are fixed on the left and right sides of the upper end of the base respectively, a winding roller is rotatably connected to the inner side of the support frame at one end, and a support roller is rotatably connected to the inner side of the support frame at the other end, a lifting wheel is installed between the winding roller and the support roller, a rope is installed between the lifting wheel, the winding roller and the support roller, the outer side of the lifting wheel is rotatably connected to the mounting frame, the lower end of the mounting frame is fixedly connected to a hook rope, the inside of the hook rope is slidably connected to a locking bar, and a positioning mechanism is installed on the inner side of the hook rope close to the mounting frame.
[0007] On the basis of the above technical solution, the present invention can also be improved as follows.
[0008] Preferably, one end of the rope is fixedly connected to the support roller, and the other end is wound around the outside of the winding roller, and the rope passes through the lower side of the lifting wheel.
[0009] Preferably, a driving motor is installed on the outer side of the winding roller, the driving motor is fixedly connected to the outer end of the support frame, and the output shaft of the driving motor is connected to the winding roller.
[0010] Preferably, an annular groove is provided on the outer side of the lifting wheel.
[0011] Preferably, a plurality of groups of rollers are movably connected to the inner side of the lower end of the mounting frame, and the surfaces of the rollers are in contact with the lifting wheels.
[0012] Preferably, a docking block is fixedly connected to a side of the outer end of the locking bar close to the hook rope, and the docking block is inserted into the inside of the hook rope.
[0013] Preferably, the positioning mechanism further comprises an adjustment plate slidably connected to the inside of the hook rope, a clamping block is fixedly connected to the lower end of the adjustment plate, a spring is fixedly connected to the upper end of the adjustment plate, and the spring is fixedly connected to the inside of the hook rope.
[0014] Preferably, the clamping block is clamped with the docking block.
[0015] Beneficial Effects
[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:
[0017] The utility model provides a lifting wheel, and installs a mounting frame and a corresponding hook rope on the outer side of the lifting wheel. When the hook rope lifts an object, the force is transmitted through the lifting wheel, and in the process, the lifting wheel can be used as a movable pulley, which reduces the work done in the whole process, thereby reducing the loss of the driving motor and increasing the service life of the driving motor. At the same time, when the hook rope lifts the object, a closed loop can be formed between the locking bar, so that when the object shakes during the lifting, the object will not slide off the hook rope, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the front section structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the front section structure of the connection between the mounting frame and the hook rope of the utility model;
[0020] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;
[0021] Figure 4 It is a schematic diagram of the side section structure of the connection between the lifting wheel and the mounting frame of the utility model.
[0022] In the figure: 1. base; 2. support frame; 21. winding roller; 22. support roller; 3. lifting wheel; 4. mounting frame; 41. roller; 5. hook rope; 6. locking bar; 61. docking block; 7. adjustment plate; 71. clamping block; 72. spring. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In the embodiments of the present application, Figure 1 and Figure 2 A traction device for a crane comprises a base 1, and support frames 2 are fixed on the left and right sides of the upper end of the base 1 respectively, a winding roller 21 is rotatably connected to the inner side of the support frame 2 at one end, and a supporting roller 22 is rotatably connected to the inner side of the support frame 2 at the other end, and a lifting wheel 3 is arranged between the winding roller 21 and the supporting roller 22, and a rope is fixed to the outer end of the supporting roller 22, and the rope passes through the lower side of the lifting wheel 3 and is wound around the outer side of the winding roller 21, so that the rope can be wound when the winding roller 21 rotates, thereby making the lifting wheel 3 rise, wherein a driving motor is arranged on the outer side of the winding roller 21, and the driving motor is fixed to the outer end of the support frame 2, and its output shaft is connected to the winding roller 21, and the specific connection method can adopt the existing technology, and the driving force is provided to the winding roller 21 by starting the driving motor.
[0025] At the same time, the outer side of the lifting wheel 3 is rotatably connected to the mounting frame 4, and a hook rope 5 is fixed to the lower end of the mounting frame 4. The object to be transported is hung on the hook rope 5. When the lifting wheel 3 rises, the hook rope 5 can be driven to pull and lift the object to be transported. When the hook rope 5 lifts the object, the lifting wheel 3 is subjected to downward force. In this process, the lifting wheel 3 operates as a movable pulley, which can reduce the work done in the entire traction and lifting process, thereby reducing the work done by the winding roller 21, reducing the loss of the drive motor, and increasing the service life of the drive motor.
[0026] Further, such as Figure 2 and Figure 4 An annular groove is provided on the outer side of the lifting wheel 3, and the rope passing through the outer side of the lifting wheel 3 can be limited by the annular groove, and a plurality of groups of rollers 41 are movably connected to the inner side of the lower end of the mounting frame 4, and the rollers 41 are in contact with the surface of the lifting wheel 3. When the hook rope 5 lifts the object, it is easy to drive the mounting frame 4 to shake together. After the mounting frame 4 shakes, it will swing left and right. The friction force when contacting with the lifting wheel 3 can be reduced by the rollers 41.
[0027] In this embodiment, Figure 2 and Figure 3The hook rope 5 is slidably connected to a locking bar 6, and a docking block 61 is fixed to the outer end of the locking bar 6 near the hook rope 5, and a positioning mechanism is provided at one end of the hook rope 5 near the mounting frame 4. After the locking bar 6 is completely slid out of the hook rope 5, it can be plugged into the hook rope 5 through the docking block 61. At this time, the positioning mechanism is used to engage with the docking block 61, so that the locking bar 6 is in a fixed state, thereby forming a closed loop state between the hook rope 5 and the locking bar 6 to prevent objects hung on the hook rope 5 from slipping out, reducing the risk of heavy objects falling.
[0028] Furthermore, the positioning mechanism is composed of an adjusting plate 7, a clamping block 71 and a spring 72, wherein the adjusting plate 7 is slidably connected to the inside of the hook rope 5, and the clamping block 71 is fixed at the lower end of the adjusting plate 7. When the docking block 61 is plugged into the hook rope 5, the adjusting plate 7 can be lowered to clamp the clamping block 71 with the docking block 61 to position the docking block 61. The spring 72 is fixed at the upper end of the adjusting plate 7, and the spring 72 is fixed inside the hook rope 5. The elastic force of the spring 72 can apply a thrust to the adjusting plate 7, so that the adjusting plate 7 can be automatically lowered.
[0029] If it is necessary to remove the object hung on the outside of the hook rope 5, or to hang the object on the hook rope 5 again, first slide the adjustment plate 7 upwards, so that the clamping block 71 is no longer engaged with the docking block 61, so that the locking bar 6 can slide, so that the docking block 61 is no longer plugged into the hook rope 5, and then the object can be removed from the hook rope 5, or another object can be hung on the hook rope 5 again.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A traction device for a crane, characterized in that: The invention comprises a base (1), wherein support frames (2) are fixed on the left and right sides of the upper end of the base (1), respectively; a winding roller (21) is rotatably connected to the inner side of the support frame (2) at one end, and a supporting roller (22) is rotatably connected to the inner side of the support frame (2) at the other end; a lifting wheel (3) is installed between the winding roller (21) and the supporting roller (22); a rope is installed between the lifting wheel (3), the winding roller (21) and the supporting roller (22); a mounting frame (4) is rotatably connected to the outer side of the lifting wheel (3); a hook rope (5) is fixedly connected to the lower end of the mounting frame (4); a locking bar (6) is slidably connected to the inside of the hook rope (5); and a positioning mechanism is installed on the inner side of the hook rope (5) close to the mounting frame (4).
2. A traction device for a crane according to claim 1, characterized in that: One end of the rope is fixedly connected to the support roller (22), and the other end is wound around the outside of the winding roller (21), and the rope passes through the lower side of the lifting wheel (3).
3. A traction device for a crane according to claim 2, characterized in that: A driving motor is installed on the outer side of the winding roller (21), the driving motor is fixedly connected to the outer end of the support frame (2), and the output shaft of the driving motor is connected to the winding roller (21).
4. A traction device for a crane according to claim 1, characterized in that: An annular groove is provided on the outer side of the lifting wheel (3).
5. A traction device for a crane according to claim 1, characterized in that: A plurality of groups of rollers (41) are movably connected to the inner side of the lower end of the mounting frame (4), and the surfaces of the rollers (41) are in contact with the lifting wheels (3).
6. A traction device for a crane according to claim 1, characterized in that: A docking block (61) is fixedly connected to a side of the outer end of the locking bar (6) close to the hook rope (5), and the docking block (61) is inserted into the interior of the hook rope (5).
7. A traction device for a crane according to claim 1, characterized in that: The positioning mechanism further comprises an adjusting plate (7) slidably connected to the inside of the hook rope (5); a clamping block (71) is fixedly connected to the lower end of the adjusting plate (7); a spring (72) is fixedly connected to the upper end of the adjusting plate (7); and the spring (72) is fixedly connected to the inside of the hook rope (5).
8. A traction device for a crane according to claim 7, characterized in that: The clamping block (71) is clamped with the docking block (61).