Mobile hoist for lifting platform

Abstract

The utility model discloses a mobile small crane for lifting platform belongs to hoisting equipment technical field, this small crane includes slide rail, the installation block of sliding connection on slide rail and sets up hoist mechanism on installation block still includes fixed mechanism and limiting mechanism, fixed mechanism includes sleeve, connecting block and first spring, and the elastic force of first spring drives connecting block to be inserted into the clamping groove of slide rail to realize default locking, limiting mechanism includes limiting block, and the side wall of connecting block is equipped with the limiting slot for with limiting block cooperation, when outwardly pulling connecting block makes it separate from clamping groove and unlock, limiting block can be inserted into limiting slot to keep the unlocking state, and it is convenient to move. The utility model discloses through spring realizes automatic locking, and keeps the unlocking state through limiting mechanism, simple structure, safe and convenient operation, effectively solved the problem that the present technical movement positioning operation is complicated and has the hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting equipment technology, and in particular to a mobile mini crane for lifting platforms. Background Technology

[0002] In the construction, exterior wall maintenance, or cleaning of high-rise buildings, lifting platforms, such as suspended scaffolds or construction platforms, are commonly used that move up and down along the building's facade. To facilitate the hoisting of tools, materials, and other items from the ground or lower levels onto the platform, these lifting platforms are often equipped with small hoisting devices.

[0003] To accommodate lifting operations at different locations on the platform, some small cranes are designed to be movable within the platform. A common method of movement is for the crane's base to slide along tracks or rails laid on the platform. To ensure safety during lifting, the lifting mechanism must be reliably locked once it has moved to the designated position to prevent accidental slippage under load.

[0004] However, existing locking methods for such mobile cranes often have shortcomings. Some locking structures use manual tightening of bolts or the operation of multiple latches for fixation. While these provide reliable locking force, the process is cumbersome and laborious, requiring repetitive loosening and tightening each time the crane is moved, significantly reducing work efficiency. Other simpler positioning methods, such as simple pin positioning, are relatively quick to operate, but their locking stability and reliability are often difficult to guarantee, posing safety hazards in complex construction environments.

[0005] Therefore, there is an urgent need for a mobile small crane structure that can achieve rapid and convenient movement and positioning, as well as provide stable and reliable locking, in order to simplify the operation process, improve work efficiency, and ensure the safety of the operation.

[0006] Therefore, this utility model proposes a mobile small crane for lifting platforms to address the shortcomings of existing technologies. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a mobile small crane for lifting platforms, aiming to improve the problems of cumbersome moving and positioning operations, low efficiency and insufficient locking reliability of mobile small cranes for lifting platforms. This utility model aims to provide a mobile small crane for lifting platforms with an improved structure that can effectively solve the above problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mobile small crane for lifting platforms, comprising: a slide rail, a mounting block, and a lifting mechanism; as well as a fixing mechanism and a limiting mechanism.

[0009] The fixing mechanism includes a sleeve fixed to the side wall of the mounting block, a connecting block slidably inserted in the sleeve, and a first spring. One end of the first spring is fixed to the upper surface of the connecting block, and its elastic force drives one end of the connecting block to engage with a slot distributed along the length of the slide rail.

[0010] The limiting mechanism includes a second fixing block and a limiting block slidably disposed within the connecting block. A limiting groove is provided on the side wall of the connecting block for engaging with the limiting block. When the connecting block overcomes the elastic force of the first spring and slides to one end separate from the groove, the limiting block can be engaged in the limiting groove.

[0011] Preferably, the limiting mechanism further includes a second spring, the two ends of which are fixed between the second fixing block and the limiting block, and the limiting block is driven by its elastic force to move toward the limiting groove.

[0012] Preferably, the fixing mechanism further includes a first fixing block and a connecting rod, one end of the connecting rod being fixedly connected to the end of the connecting block away from the slide rail, and the other end of the connecting rod being fixedly connected to the first fixing block.

[0013] Preferably, the limiting mechanism further includes a sliding rod and a sliding block, the sliding rod being fixed to the limiting block and slidingly passing through the second fixed block, and the sliding block being fixed to the outer wall of the limiting block.

[0014] Preferably, the hoisting mechanism includes a support frame fixed to the top surface of the mounting block, and a rotating frame rotatably connected to the top of the support frame.

[0015] Preferably, the hoisting mechanism further includes a hook and a winch. The hook is suspended at the front end of the rotating frame, and the winch is mounted on the support frame and is connected to the hook via a rope.

[0016] Preferably, the mobile hoist for the lifting platform further includes a steel frame, a horizontal bar, and the lifting platform body.

[0017] Preferably, the lifting platform body is disposed outside the steel frame, and both the lifting platform body and the steel frame are fixed to the building by horizontal bars, and the slide rail is horizontally fixed on the plane of the lifting platform body.

[0018] This utility model has the following beneficial effects: 1. In this utility model, by setting a connecting block driven by a spring, it can automatically engage and lock with the slot on the slide rail, which solves the problems of manual locking, cumbersome operation, and safety hazards caused by forgetting to lock in the prior art. It achieves the technical effect of automatic reset and locking when there is no external force operation, and improves the inherent safety of the equipment.

[0019] 2. In this utility model, by setting a limiting mechanism that can automatically engage with the limiting groove after the connecting block is unlocked, the problem of needing to continuously apply force to maintain the unlocked state after unlocking, which leads to inconvenience in movement operation, is solved. The effect of "one pull to unlock, automatic holding" is achieved, which greatly simplifies the operation process and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the mobile small crane for lifting platforms proposed in this utility model; Figure 2 This is a schematic diagram of the lifting platform body of the mobile small crane for lifting platforms proposed in this utility model. Figure 3 This is a schematic diagram of the support frame structure of the mobile small crane for the lifting platform proposed in this utility model; Figure 4 This is a schematic diagram of the limiting block part of the mobile small crane for lifting platform proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the image.

[0021] Legend: 1. Steel frame; 2. Horizontal bar; 3. Slide rail; 4. Lifting platform body; 5. Hoisting mechanism; 501. Support frame; 502. Rotating frame; 503. Hook; 504. Winch; 505. Mounting block; 6. Fixing mechanism; 601. Sleeve; 602. First fixing block; 603. Connecting rod; 604. First spring; 605. Connecting block; 606. Limiting groove; 7. Limiting mechanism; 701. Limiting block; 702. Sliding block; 703. Second spring; 704. Sliding rod; 705. Second fixing block. Detailed Implementation

[0022] Please refer to Figures 1 to 5 This utility model provides a mobile small crane for lifting platforms, which aims to solve the problems of complex structure, inconvenient operation and safety risks in the movement and positioning of existing small cranes for lifting platforms.

[0023] The mobile hoist for the lifting platform includes a steel frame 1, a horizontal bar 2, a lifting platform body 4, a slide rail 3, a mounting block 505, and a hoisting mechanism 5 mounted on the mounting block 505. The lifting platform body 4 is located outside the steel frame 1. Both the lifting platform body 4 and the steel frame 1 are fixed to the building via the horizontal bar 2. The slide rail 3 is horizontally fixed on the plane of the lifting platform body 4, and the slide rail 3 has slots distributed along its length. The mounting block 505 slides on the slide rail 3, providing a basis for the movement of the hoisting mechanism 5.

[0024] To achieve safe locking and convenient unlocking of the hoisting mechanism 5 on the slide rail 3, the lifting platform mobile hoist further includes a fixing mechanism 6 and a limiting mechanism 7. The fixing mechanism 6 includes a sleeve 601, a connecting block 605, a first spring 604, a first fixing block 602, and a connecting rod 603. The sleeve 601 is fixed to the side wall of the mounting block 505. The connecting block 605 slides through the sleeve 601. One end of the first spring 604 is fixed to the upper surface of the connecting block 605, and the elastic force of the first spring 604 drives one end of the connecting block 605 to engage with the slot of the slide rail 3, thereby locking the mounting block 505 on the slide rail 3 in the default state. One end of the connecting rod 603 is fixedly connected to the end of the connecting block 605 away from the slide rail 3, and the other end of the connecting rod 603 is fixedly connected to the first fixing block 602, which is used to operate the connecting block 605 by pulling the first fixing block 602.

[0025] The limiting mechanism 7 includes a second fixing block 705, a limiting block 701, a second spring 703, a slide rod 704, and a sliding block 702. A limiting groove 606 is provided on the side wall of the connecting block 605 for engaging with the limiting block 701. The limiting block 701 is slidably disposed within the connecting block 605. Both ends of the second spring 703 are fixed between the second fixing block 705 and the limiting block 701, and the elastic force of the second spring 703 drives the limiting block 701 towards... The limiting groove 606 moves in the direction of movement. The slide rod 704 is fixed on the limiting block 701 and slides through the second fixed block 705. The sliding block 702 is fixed on the outer wall of the limiting block 701. When the connecting block 605 overcomes the elastic force of the first spring 604 and slides to the point where one end of the connecting block 605 separates from the slot of the slide rail 3, the limiting block 701 can be driven by the second spring 703 to be inserted into the limiting groove 606 to keep the connecting block 605 in the unlocked state.

[0026] The sleeve 601 in the fixing mechanism 6 is firmly fixed to the side wall of the mounting block 505 by welding, providing a precise sliding guide for the internal connecting block 605. The front end of the connecting block 605 is adapted to the groove on the slide rail 3 to achieve reliable engagement and locking. The tail end of the connecting block 605 is fixedly connected to the first fixing block 602, which is easy to operate by hand, through the connecting rod 603. When the connecting block 605 slides through the inside of the sleeve 601, the inner wall of the sleeve 601 and the outer wall of the connecting block 605 also accommodate the first spring 604. One end of the first spring 604 is fixed to the upper surface of the connecting block 605. The continuously applied elastic force makes the connecting block 605 tend to engage with the groove of the slide rail 3 and remain locked when there is no external force.

[0027] Meanwhile, the second fixing block 705 of the limiting mechanism 7 is also welded and fixed to the mounting block 505 and is located adjacent to the sleeve 601. The interior of the second fixing block 705 provides a sliding channel for the limiting block 701 and its connected slide rod 704. The head shape of the limiting block 701 is designed to accurately engage in the limiting groove 606 opened on the side wall of the connecting block 605. The second spring 703 is located between the inner wall of the second fixing block 705 and the side wall of the limiting block 701, continuously generating a pushing force so that the limiting block 701 is always ready to engage in the limiting groove 606. The sliding block 702 connected to the slide rod 704 is exposed to the outside, making it easy for the operator to apply force to release the limiting. This linkage structure between the fixing mechanism 6 and the limiting mechanism 7 ensures that after the first fixing block 602 is pulled to disengage the connecting block 605 from the slot, the limiting block 701 can automatically engage in the limiting groove 606 and remain in the unlocked state, greatly improving the convenience and safety of operation.

[0028] In a preferred embodiment, in order to achieve the complete hoisting function, the hoisting mechanism 5 includes a support frame 501 fixed to the top surface of the mounting block 505, and a rotating frame 502 rotatably connected to the top of the support frame 501. The support frame 501 provides a stable support foundation for the upper structure of the entire hoisting mechanism 5, while the rotatable rotating frame 502 allows for fine adjustment of the horizontal position of the hoisted object without moving the entire device.

[0029] As a further refinement of the aforementioned lifting mechanism 5, in order to complete the actual lifting task, the lifting mechanism 5 also includes a hook 503 and a winch 504. The hook 503 is suspended from the front end of the rotating frame 502 by a wire rope and is used to directly hook the goods. The winch 504 is installed on the support frame 501 by a bracket and is connected to the hook 503 by a rope. The lifting and lowering of the hook 503 is achieved by controlling the forward and reverse rotation of the winch 504.

[0030] In a preferred embodiment, in order to construct a complete equipment platform, the mobile hoist for the lifting platform also includes a steel frame 1, a horizontal bar 2, and a lifting platform body 4, which forms the foundation of the entire mobile hoist's working platform.

[0031] As a further refinement of the aforementioned platform foundation, the lifting platform body 4 is vertically mounted inside the steel frame 1 and fixed to the building via the horizontal bar 2, allowing the height of the entire working platform to be adjusted. The slide rail 3 is horizontally fixed to the top surface of the lifting platform body 4, providing a reference for the movement of the mounting block 505.

[0032] Working principle: During hoisting operations, the first spring 604 of the fixing mechanism 6 is in a naturally extended state. Its elastic force pushes the front end of the connecting block 605 into the slot of the slide rail 3. At this time, the mounting block 505 is firmly locked, and the hoisting mechanism 5 cannot move, ensuring the stability of the hoisting process. The operator can control the lifting of the hook 503 through the winch 504 and rotate the rotating frame 502 to adjust the hoisting position. When the position of the hoisting mechanism 5 needs to be moved, the operator pulls the first fixing block 602 outward, and the connecting block 605 slides backward in the sleeve 601 through the connecting rod 603, compressing the first spring 604 until the front end of the connecting block 605 is completely disengaged from the slot of the slide rail 3. Just as the connecting block 605 is retracted into place, the second spring 703 of the limiting mechanism 7 pushes the limiting block 701 to automatically engage in the limiting groove 606 on the side wall of the connecting block 605. This action temporarily fixes the connecting block 605 in the retracted position, keeping the entire equipment in the unlocked state. At this time, the operator can easily push the entire hoisting mechanism 5 to slide along the slide rail 3 to the new working point. After the hoisting mechanism 5 moves to the target position, the operator presses or moves the sliding block 702 of the limiting mechanism 7, causing the limiting block 701 to disengage from the limiting groove 606, releasing the lock on the connecting block 605. The compressed first spring 604 immediately releases its elastic force, pushing the connecting block 605 forward and causing its front end to re-engage into the slot of the slide rail 3, completing the locking. The equipment is then ready for the next hoisting operation.

Claims

1. A mobile hoist for lifting the platform, including: The slide rail (3) has slots distributed along its length. Mounting block (505), which slides on the slide rail (3); A hoisting mechanism (5), wherein the hoisting mechanism (5) is disposed on the mounting block (505), characterized in that, The mobile hoist for the lifting platform also includes a fixing mechanism (6) and a limiting mechanism (7); The fixing mechanism (6) includes a sleeve (601), a connecting block (605) and a first spring (604). The sleeve (601) is fixed to the side wall of the mounting block (505). The connecting block (605) slides through the sleeve (601). One end of the first spring (604) is fixed to the upper surface of the connecting block (605) and its elastic force drives one end of the connecting block (605) to engage with the groove of the slide rail (3). The limiting mechanism (7) includes a second fixing block (705) and a limiting block (701) slidably disposed in the connecting block (605). The side wall of the connecting block (605) is provided with a limiting groove (606) for engaging with the limiting block (701). When the connecting block (605) overcomes the elastic force of the first spring (604) and slides to the point where one end of it separates from the slot of the slide rail (3), the limiting block (701) can be engaged in the limiting groove (606).

2. The mobile hoist for lifting platforms according to claim 1, characterized in that, The limiting mechanism (7) further includes a second spring (703), the two ends of which are fixed between the second fixing block (705) and the limiting block (701), and the limiting block (701) is driven by its elastic force to move toward the limiting groove (606).

3. The mobile mini crane for lifting platforms according to claim 1, characterized in that, The fixing mechanism (6) further includes a first fixing block (602) and a connecting rod (603). One end of the connecting rod (603) is fixedly connected to the end of the connecting block (605) away from the slide rail (3), and the other end of the connecting rod (603) is fixedly connected to the first fixing block (602).

4. The mobile hoist for lifting platforms according to claim 2, characterized in that, The limiting mechanism (7) further includes a slide rod (704) and a sliding block (702). The slide rod (704) is fixed on the limiting block (701) and slides through the second fixing block (705). The sliding block (702) fixes the outer wall of the limiting block (701).

5. The mobile hoist for lifting platforms according to claim 1, characterized in that, The hoisting mechanism (5) includes a support frame (501) fixed to the top surface of the mounting block (505) and a rotating frame (502) rotatably connected to the top of the support frame (501).

6. The mobile mini crane for lifting platforms according to claim 5, characterized in that, The hoisting mechanism (5) also includes a hook (503) and a winch (504). The hook (503) is suspended at the front end of the rotating frame (502), and the winch (504) is installed on the support frame (501) and is connected to the hook (503) by a rope.

7. The mobile hoist for lifting platforms according to claim 1, characterized in that, The mobile hoist for the lifting platform also includes a steel frame (1), a horizontal bar (2), and the lifting platform body (4).

8. The mobile mini crane for lifting platforms according to claim 7, characterized in that, The lifting platform body (4) is located outside the steel frame (1). Both the lifting platform body (4) and the steel frame (1) are fixed to the building by a horizontal bar (2). The slide rail (3) is horizontally fixed on the plane of the lifting platform body (4).

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