Tabletop light-duty jib

Abstract

The utility model discloses a desktop type light -duty cantilever crane, and the utility model relates to hoisting equipment technical field. This desktop type light -duty cantilever crane, including installation base, the top of installation base is provided with the support stand, the top of support stand is fixedly connected with the connecting casing, and the one end away from support stand of connecting casing is fixedly connected with the overhanging wall column, and the inside rotation of connecting casing is connected with the rope disc and transmission shaft, and the outer surface of rope disc is provided with the steel wire rope, and the one end away from rope disc of steel wire rope is provided with the lifting hook, and the outer surface of transmission shaft is provided with second gear and capstan, and the bottom of support stand is provided with the installation part, and the outer surface of installation part is fixedly connected with third gear, and the one side of transmission shaft is equipped with the movable rod, and the end of movable rod is fixedly connected with the limiting block, and the utility model discloses a compact structure design is provided, and the light -duty cantilerer for using in the desktop type small -size working environment conveniently is provided, and the hoisting operation is more flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, specifically a desktop lightweight cantilever crane. Background Technology

[0002] Lifting and moving objects are involved in various industries and fields. According to the national standard GB12330-90 "Limits of Weight for Physical Handling", the standard limit for a single lifting weight for an adult male is 15kg. However, in daily handling operations, the weight is often exceeded, sometimes by several times. This can cause significant physical harm to the operator and create many safety hazards. In some developed European countries, it is stipulated that objects weighing more than 20kg must be handled with appropriate lifting tools. In fact, there are many different types of handling and lifting tools and equipment in daily life and production, such as manual and electric hoists, various factory jib cranes, and mobile lifting trolleys.

[0003] Traditional hoisting equipment is often bulky and complex in structure, making it inconvenient to use in small desktop work environments. At the same time, these devices also have certain shortcomings in terms of operational flexibility and stability, making it difficult to meet the needs of precision operations. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a desktop lightweight cantilever crane to solve the problems mentioned in the background art, such as the large size, inconvenient operation, and insufficient flexibility and stability of traditional hoisting equipment, which make it difficult to meet the needs of precision operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desktop lightweight cantilever crane, comprising a mounting base, a supporting column at the top of the mounting base, a connecting housing fixedly connected to the top of the supporting column, a cantilever column fixedly connected to the end of the connecting housing away from the supporting column, a rope reel and a drive shaft rotatably connected inside the connecting housing, a wire rope on the outer surface of the rope reel, a hook at the end of the wire rope away from the rope reel, a second gear and a winch on the outer surface of the drive shaft, a mounting part at the bottom of the supporting column, a third gear fixedly connected to the outer surface of the mounting part, a movable rod sleeved on one side of the drive shaft, and a limit block fixedly connected to the end of the movable rod.

[0006] Preferably, a guide rod is rotatably connected to the inner wall of the connecting housing, and a guide wheel is provided at the end of the cantilever column away from the connecting housing. The wire rope passes through the annular groove on the surface of the guide rod and the surface of the guide wheel.

[0007] Preferably, one end of the rope reel is fixedly connected to a first gear, the first gear meshes with a second gear, one end of the drive shaft extends to the outside of the connecting housing, and the handle is disposed on the outside of the connecting housing.

[0008] Preferably, a locking rod is provided on one side of the connecting housing, and the locking rod is adapted to the tooth groove of the first gear.

[0009] Preferably, the top of the mounting base is provided with a mounting groove, the limiting block is disposed inside the mounting groove, and the outer surface of the limiting block is adapted to the tooth groove of the third gear.

[0010] Preferably, the bottom of the mounting groove is provided with an annular guide groove, and the bottom of the mounting part is provided with a ball bearing, the bottom of which is adapted to the inner surface of the annular guide groove. Beneficial effects

[0011] This utility model provides a desktop lightweight cantilever crane. It has the following advantages: 1. This desktop lightweight cantilever crane achieves structural compactness and stability through the ingenious combination of components such as mounting base, support column, connecting shell, and cantilever column. By adopting a compact structural design, it provides a lightweight cantilever crane that is easy to use in small desktop working environments, making lifting operations more flexible and convenient.

[0012] 2. This desktop lightweight cantilever crane features a design that uses a movable rod to link a limiting block and a third gear with a toothed locking mechanism. This allows for quick, one-handed rotation adjustment of the support column and mechanical self-locking. Simply push or pull the movable rod horizontally to switch the cantilever angle and lock it instantly, significantly improving operational flexibility and positioning stability. Furthermore, through the cooperation of the first gear, the second gear, and the winch's bidirectional ratchet system, the rope reel can be simultaneously controlled to raise and lower the wire rope when the handle is manually turned. The reversible gear transmission enables bidirectional instant locking of the hook's lifting and lowering, ensuring that the load remains suspended at any position without slippage, enhancing safety and operational controllability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view structural diagram of the entire utility model; Figure 3 This is a schematic diagram of the internal structure of the connecting shell of this utility model; Figure 4 This is a schematic diagram of the connection between the mounting base and the supporting column of this utility model.

[0014] In the diagram: 1. Mounting base; 2. Support column; 3. Connecting shell; 4. Cantilever column; 5. Rope reel; 6. Steel wire rope; 7. Hook; 8. Guide rod; 9. Guide wheel; 10. First gear; 11. Drive shaft; 12. Second gear; 13. Winch; 14. Locking rod; 15. Rotary handle; 16. Mounting groove; 17. Annular guide groove; 18. Mounting part; 19. Third gear; 20. Movable rod; 21. Limiting block; 22. Ball bearing. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-4 As shown, this utility model provides a desktop lightweight cantilever crane, including a mounting base 1, a support column 2 on the top of the mounting base 1, a connecting housing 3 fixedly connected to the top of the support column 2, a cantilever column 4 fixedly connected to the end of the connecting housing 3 away from the support column 2, a rope reel 5 and a drive shaft 11 rotatably connected inside the connecting housing 3, a wire rope 6 on the outer surface of the rope reel 5, a hook 7 on the end of the wire rope 6 away from the rope reel 5, a second gear 12 and a winch 13 on the outer surface of the drive shaft 11, a mounting part 18 at the bottom of the support column 2, a third gear 19 fixedly connected to the outer surface of the mounting part 18, a movable rod 20 sleeved on one side of the drive shaft 11, and a limit block 21 fixedly connected to the end of the movable rod 20.

[0017] Specifically, a guide rod 8 is rotatably connected to the inner wall of the connecting housing 3, and a guide wheel 9 is provided at the end of the cantilever column 4 away from the connecting housing 3. The steel wire rope 6 passes through the annular groove on the surface of the guide rod 8 and the surface of the guide wheel 9. The design of the guide rod 8 and the guide wheel 9 plays the role of guiding and supporting the steel wire rope 6, ensuring that the steel wire rope 6 can move smoothly and steadily during the winding and unwinding process.

[0018] Specifically, a first gear 10 is fixedly connected to one end of the rope reel 5. The first gear 10 meshes with the second gear 12. One end of the drive shaft 11 extends to the outside of the connecting housing 3. The handle 15 is located on the outside of the connecting housing 3. The user can manually rotate the handle 15 to drive the drive shaft 11 and the winch 13. With the meshing first gear 10 and second gear 12, hoisting operations can be easily achieved.

[0019] Specifically, a locking rod 14 is provided on one side of the connecting housing 3. The locking rod 14 is adapted to the tooth groove of the first gear 10. The locking rod 14 is designed to lock the first gear 10 for a second time to prevent it from rotating on its own when not in operation, thereby further improving the stability and safety of the equipment.

[0020] Specifically, the top of the mounting base 1 is provided with a mounting groove 16, and the limiting block 21 is set inside the mounting groove 16. The outer surface of the limiting block 21 is adapted to the tooth groove of the third gear 19. When the jib crane needs to be fixed in a certain position for operation, the user can push the movable rod 20 to make the limiting block 21 engage in the tooth groove of the third gear 19, thereby locking the rotation of the support column 2. This limiting mechanism ensures the stability of the jib crane during operation.

[0021] Specifically, the bottom of the mounting groove 16 is provided with an annular guide groove 17, and the bottom of the mounting part 18 is provided with a ball bearing 22. The bottom of the ball bearing 22 is adapted to the inner surface of the annular guide groove 17. The design of the annular guide groove 17 and the ball bearing 22 enables the support column 2 to rotate smoothly on the mounting base 1. The ball bearing 22 rolls in the annular guide groove 17, reducing the frictional resistance during the rotation process, so that the support column 2 can rotate easily and smoothly to the required position.

[0022] The working principle of the above embodiments: In use, the mounting base 1 is fixed to the required workbench with bolts. The movable rod 20 is moved outward to make the limiting block 21 leave the tooth groove of the third gear 19, releasing the restriction of the mounting base 1 on the support column 2, so that the support column 2 can rotate relative to the mounting base 1. After rotating the cantilever column 4 to the required position according to the work needs, the movable rod 20 is pushed inward to make the limiting block 21 engage in the corresponding tooth groove on the third gear 19, so that the support column 2 is restricted from rotating, ensuring the stability of the cantilever crane during operation. During operation, the handle 15 is manually rotated, which drives the transmission shaft 11 to rotate. Since the winch 13 can achieve bidirectional instant locking through the symmetrical ratchet system, and completes forward and reverse control with the reversible gear transmission, the first gear 10, the second gear 12 and the winch 13 can drive the rope disc 5 to rotate, thereby winding and unwinding the wire rope 6, and driving the lifting and lowering of the load on the hook 7.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desktop lightweight cantilever crane, including a mounting base (1), characterized in that: The top of the mounting base (1) is provided with a support column (2), and the top of the support column (2) is fixedly connected with a connecting housing (3). The end of the connecting housing (3) away from the support column (2) is fixedly connected with a cantilever column (4). The inside of the connecting housing (3) is rotatably connected with a rope disc (5) and a drive shaft (11). The outer surface of the rope disc (5) is provided with a wire rope (6). The end of the wire rope (6) away from the rope disc (5) is provided with a hook (7). The outer surface of the drive shaft (11) is provided with a second gear (12) and a winch (13). The bottom end of the support column (2) is provided with an installation part (18). The outer surface of the installation part (18) is fixedly connected with a third gear (19). A movable rod (20) is sleeved on one side of the drive shaft (11). The end of the movable rod (20) is fixedly connected with a limit block (21).

2. The desktop lightweight cantilever crane according to claim 1, characterized in that: The inner wall of the connecting housing (3) is rotatably connected to a guide rod (8), and a guide wheel (9) is provided at the end of the cantilever column (4) away from the connecting housing (3). The wire rope (6) passes through the annular groove on the surface of the guide rod (8) and the surface of the guide wheel (9).

3. The desktop lightweight cantilever crane according to claim 1, characterized in that: One end of the rope reel (5) is fixedly connected to a first gear (10), which meshes with a second gear (12). One end of the transmission shaft (11) extends to the outside of the connecting housing (3), and a handle (15) is provided on the outside of the connecting housing (3).

4. The desktop lightweight cantilever crane according to claim 3, characterized in that: A locking rod (14) is provided on one side of the connecting housing (3), and the locking rod (14) is adapted to the tooth groove of the first gear (10).

5. The desktop lightweight cantilever crane according to claim 1, characterized in that: The mounting base (1) has a mounting groove (16) on its top, and the limiting block (21) is located inside the mounting groove (16). The outer surface of the limiting block (21) is adapted to the tooth groove of the third gear (19).

6. The desktop lightweight cantilever crane according to claim 5, characterized in that: The bottom of the mounting groove (16) is provided with an annular guide groove (17), and the bottom of the mounting part (18) is provided with a ball (22). The bottom of the ball (22) is adapted to the inner surface of the annular guide groove (17).

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