Portable jacking device

Abstract

This utility model discloses a portable lifting device, including a carrier frame, a positioning frame, a top column, and a drive mechanism. The drive mechanism drives the top column upward through the interaction of a rotating wheel and teeth on the top column. The drive mechanism also includes a check mechanism to prevent the rotating wheel from rotating in the opposite direction, thereby ensuring stability. The design of this utility model allows the entire mechanism to be detachable; the carrier frame can store the positioning frame and the top column, facilitating storage and portability. The drive mechanism is separable from the carrier frame, further improving convenience. Furthermore, a guide structure is provided between the top column and the positioning frame, enhancing operational stability. Compared to traditional jacks, this utility model is lighter, more height-adjustable, and more flexible in operation, significantly improving controllability and applicability.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a portable lifting device. Background Technology

[0002] Shipbuilding involves numerous plates of various shapes, such as curved plates, bulkheads, and decks, which play a crucial role in the hull structure. Especially for plates with special shapes, such as curved plates, manual adjustments are often required during processing to ensure they reach the appropriate machining position or height. Operators use tools or equipment to lift or support the plates, placing them in the predetermined machining state to meet the requirements of subsequent welding, assembly, or other processes.

[0003] The shortcomings of existing technology:

[0004] Currently, in the processing of small sheet metal parts, manual adjustment of the part's position mainly relies on traditional tools such as jacks or shims. While jacks can provide significant lifting force, they are heavy and inconvenient to carry. Shims, on the other hand, require multiple stacking and adjustments, and their height is uncontrollable, easily leading to unstable part positions and affecting processing accuracy. Therefore, there is an urgent need for a compact, easy-to-operate, and portable lifting device to improve the efficiency of small sheet metal processing in shipbuilding. Utility Model Content

[0005] The purpose of this invention is to provide a portable lifting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable lifting device, comprising a frame, a positioning frame rotatably connected to the frame, a top column slidably disposed within the positioning frame, a slot on the frame, and a driving mechanism for driving the top column upwards within the slot; the driving mechanism comprises: a bracket disposed within the slot; a rotating wheel rotatably connected to the bracket, the top column and the rotating wheel having mutually matching teeth; and a reverse-rotation mechanism disposed on the bracket and the rotating wheel respectively, for preventing the rotating wheel from rotating in the opposite direction.

[0007] Preferably, the anti-reverse mechanism includes: a plurality of ratchet teeth disposed on the side of the rotating wheel and arranged along its circumference; a top member rotatably connected to the bracket; and a pressure-bearing part disposed on the bracket for providing support force to the top member.

[0008] Preferably, the positioning frame and the side wall of the top column are provided with matching guide structures.

[0009] Preferably, the carrier frame is provided with a receiving groove for accommodating the positioning frame.

[0010] Preferably, the top post is provided with a contact.

[0011] Preferably, the rotating wheel has a drive shaft at its axis, and the rotating wheel is rotatably connected to the bracket through the drive shaft.

[0012] Preferably, the slot and the bracket are provided with matching positioning mechanisms.

[0013] Preferably, the side wall of the frame is provided with an opening corresponding to the position of the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The structural design of this utility model allows the entire mechanism to be disassembled for easy carrying. When not in use, the carrier frame can effectively store the positioning frame and top column, saving space; at the same time, the drive mechanism can be separated from the carrier frame, further improving convenience. Compared with traditional jacks, this utility model is lighter and easier to carry, and its height can be precisely adjusted, thus significantly improving operational flexibility and controllability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drive mechanism structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the top column after it is stored in this utility model.

[0019] In the diagram: 1. Carrier frame; 2. Positioning frame; 3. Top post; 4. Slot; 5. Drive mechanism; 501. Bracket; 502. Rotating wheel; 5022. Tooth; 503. Anti-reverse mechanism; 5031. Ratchet; 5032. Top piece; 5033. Pressure bearing part; 6. Receiving groove; 7. Contact; 8. Drive shaft; 9. Positioning mechanism; 10. Guide structure; 11. Opening. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0024] Example

[0025] Please see Figure 1-3 As shown, the present invention provides a portable lifting device technical solution: a portable lifting device includes a frame 1, a positioning frame 2 rotatably connected to the frame 1, a top column 3 slidably disposed in the positioning frame 2, a slot 4 on the frame 1, and a driving mechanism 5 for driving the top column 3 to rise in the slot 4.

[0026] The drive mechanism 5 includes components such as a bracket 501, a rotating wheel 502, and a reverse-rotation mechanism 503. The bracket 501 is detachably disposed in the slot 4, the rotating wheel 502 is rotatably connected to the bracket 501, the top column 3 and the rotating wheel 502 are provided with matching teeth 5022, and the reverse-rotation mechanism 503 is disposed on the bracket 501 and the rotating wheel 502 respectively to prevent the rotating wheel 502 from rotating in the opposite direction.

[0027] In this embodiment, the anti-reverse mechanism 503 includes: a plurality of ratchet teeth 5031, a top member 5032, and a pressure-bearing part 5033; the ratchet teeth 5031 are provided on the side of the rotating wheel 502 and arranged along its circumference; the top member 5032 is rotatably connected to the bracket 501; and the pressure-bearing part 5033 is provided on the bracket 501 to provide support for the top member 5032.

[0028] When the rotating wheel 502 stops rotating, the end of the top member 5032 will abut against the first ratchet 5031 above its end. After that, the side wall of the top member 5032 will be supported by the pressure-bearing part 5033, preventing the rotating wheel 502 from rotating further, so as to achieve the effect of fixing the lifting height.

[0029] The positioning frame 2 and the side wall of the top column 3 are equipped with matching guide structures 10.

[0030] In this embodiment, the guide structure 10 is as follows: Figure 1 As shown, the top column 3 has sliding grooves on both sides, and the inner side of the positioning frame 2 has a fixed sliding part that matches the sliding groove, so as to realize the movement guidance and ensure that it moves along the height direction of the positioning frame 2.

[0031] The frame 1 is also provided with a receiving groove 6, which facilitates the storage of the positioning frame 2 and the top column 3.

[0032] The top column 3 is equipped with a contact 7. The top of the contact 7 is designed with a spherical surface to accommodate the lifting of different plate surfaces. In the specific implementation process, the contact 7 can be further designed to be detachable, such as by opening a screw hole on the top of the top column 3 and setting threads on the connection part of the contact 7 to facilitate disassembly and replacement.

[0033] The rotating wheel 502 has a drive shaft 8 at its axis, and the rotating wheel 502 is rotatably connected to the bracket 501 through the drive shaft 8.

[0034] like Figure 2 As shown, the end of the drive shaft 8 can be further designed with a special shape and structure to facilitate the operator to use tools to operate the rotation of the rotating wheel 502.

[0035] The slot 4 and the bracket 501 are provided with mutually matching positioning mechanisms 9. The positioning mechanism 9 includes a protruding structure and a matching recessed structure. The protruding structure is provided on the bracket 501, and the recessed structure is provided on the slot 4. Of course, the opposite configuration can also be used, that is, the protruding structure is provided on the slot 4, and the recessed structure is provided on the bracket 501.

[0036] The side wall of the frame 1 is provided with an opening 11 corresponding to the position of the slot 4. By setting the opening 11, the positioning frame 2 can be easily inserted from the opening 11 when it is upright, thus improving the installation efficiency.

[0037] The working principle of this utility model is as follows:

[0038] In this embodiment of the portable lifting device, the carrier frame 1 is first placed at the position where the plate needs to be lifted, and the positioning frame 2 is placed vertically. Next, the rotating wheel 502 and the teeth 5022 on the top column 3 are appropriately adjusted to create a misalignment. Then, the operator pushes the bracket 501 into the slot 4. At this time, the position of the drive mechanism 5 is fixed through the cooperation of the positioning mechanism 9. Subsequently, the operator uses a wrench or other tools to rotate the drive shaft 8. The rotation of the drive shaft 8 causes the rotating wheel 502 to move the top column 3 upward, completing the lifting of the plate. When the drive shaft 8 stops rotating, the pressure-bearing part 5033 provides support for the top member 5032, and the top member 5032 abuts against the ratchet 5031 to prevent the top column 3 from sliding down, ensuring a stable lifting state.

[0039] When retracting, the operator removes the drive mechanism 5, retracts the top column 3 into the positioning frame 2, and then places the positioning frame 2 into the receiving slot 6 of the carrier frame 1 for easy carrying and storage.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable lifting device, characterized in that: The device includes a frame, a positioning frame rotatably connected to the frame, a top post slidably mounted in the positioning frame, and a slot on the frame containing a drive mechanism for driving the top post upwards. The drive mechanism includes: a bracket disposed in the slot; a rotating wheel rotatably connected to the bracket, with matching teeth on the top post and the rotating wheel; and a reverse-rotation mechanism disposed on the bracket and the rotating wheel to prevent the rotating wheel from rotating in the opposite direction.

2. The portable lifting device according to claim 1, characterized in that: The anti-reverse mechanism includes: a plurality of ratchet teeth disposed on the side of the rotating wheel and arranged along its circumference; a top member rotatably connected to the bracket; and a pressure-bearing part disposed on the bracket for providing support force to the top member.

3. A portable lifting device according to claim 1 or 2, characterized in that: The positioning frame and the side wall of the top column are provided with matching guide structures.

4. A portable lifting device according to claim 1 or 2, characterized in that: The carrier frame is provided with a receiving slot for accommodating the positioning frame.

5. A portable lifting device according to claim 1 or 2, characterized in that: The top column is equipped with a contact.

6. A portable lifting device according to claim 1 or 2, characterized in that: The rotating wheel has a drive shaft at its axis, and the rotating wheel is rotatably connected to the bracket through the drive shaft.

7. A portable lifting device according to claim 1 or 2, characterized in that: The slot and the bracket are equipped with matching positioning mechanisms.

8. A portable lifting device according to claim 1 or 2, characterized in that: The side wall of the frame is provided with an opening corresponding to the position of the slot.

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