A lightweight jacking device

Abstract

The utility model discloses a kind of light jacking equipment, it is related to heavy object jacking technical field. Including jacking base component, lifting mechanism platform component, feeding platform and top platform. Lifting mechanism platform component is built-in in jacking base component, feeding platform is fixed in its front side for manually receiving and guiding light weight cushioning block, top platform is located at top. Jacking base component is equipped with latch mechanism, its left and right latch can be driven by latch oil cylinder, selectively inserted or withdrawn cushioning block path to provide support. Lifting mechanism platform component is driven lifting bracket by lifting oil cylinder, and under the guidance of guide rod and guide seat, drive cushioning block vertical lifting. The utility model is sequentially matched by latch mechanism and lifting mechanism platform component, realizes the safe transfer of load and step by step jacking. Its structure is compact, simplifies control, has load capacity and portability, especially suitable for space limited and need flexible operation occasion.

Description

Technical Field

[0001] This utility model relates to the technical field of heavy object lifting equipment, and in particular to a lightweight lifting device that is compact in structure, easy to operate manually, and suitable for confined spaces, which can lift and lower heavy objects by gradually lifting the blocks. Background Technology

[0002] During the installation, maintenance, or handling of large equipment, it is often necessary to lift heavy objects. In the prior art, step-by-step lifting equipment has been widely used, such as the step-by-step lifting equipment for raising large devices disclosed in Chinese patent document CN119263156A. This equipment includes a material preparation system, a lifting system, and a control system. The lifting platform is driven by hydraulic cylinders for lifting the blocks, and the automatic separation, conveying, and locking of the blocks are achieved through a locking device that works in conjunction with an automatic feeding platform.

[0003] Although existing technologies can achieve automated lifting, they have the following defects and shortcomings in practical use: With its complex structure and large footprint, the existing lifting equipment requires a material preparation system, an automatic feeding platform, and multiple sets of sensors and actuators, resulting in a bulky overall structure. It is suitable for large workshops or open spaces, but difficult to use indoors or in spaces with limited space.

[0004] In addition, existing lifting equipment relies on external power and control systems. Its lifting, feeding and locking actions all depend on the coordination of hydraulic cylinders and PLC controllers, which not only consumes a lot of energy but also requires professional maintenance. It is not suitable for on-site needs where there is no power supply or a rapid response is required.

[0005] Furthermore, existing lifting equipment has poor operational flexibility. The stacking, separation, and conveying of the jacks are all completed by automated mechanisms, making it impossible to flexibly adjust the number or position of the jacks according to on-site needs. In addition, the equipment is expensive, which is not conducive to the application of small and medium-sized scenarios.

[0006] In addition, existing lifting equipment is not lightweight and portable enough. In order to meet the lifting needs of large devices, the equipment focuses on heavy load and automation, but does not take into account the needs of single-person operation, manual handling and rapid deployment, resulting in low efficiency in light and high-frequency operations. Utility Model Content

[0007] The technical problem this invention aims to solve is to overcome the shortcomings of existing jacking equipment, such as complex structure, reliance on automated control, poor operational flexibility, and insufficient portability, and to provide a lightweight jacking device that is compact, easy to operate, and suitable for confined space operations. By optimizing the equipment structure and workflow, it achieves an organic combination of manual operation and mechanical jacking, significantly improving the equipment's portability, site adaptability, and economic practicality while ensuring load capacity.

[0008] To address the aforementioned problems, this utility model provides a lightweight lifting device for lifting and lowering objects, comprising: Lifting base components; A lifting mechanism platform component is disposed inside the lifting base component and is fixedly connected to the lifting base component; A feeding platform is located on the front side of the lifting base component and is fixedly connected to the lifting base component. The feeding platform is configured for manually receiving and guiding the lifting blocks. A top platform, located above the lifting mechanism platform component, is used to support the object; The lifting base component includes a pin mechanism that can be movably inserted into and out of the path of the shim block to selectively support the shim block or the top platform. The lifting mechanism platform component drives the shim block to move vertically, so that the shim block is lifted by the lifting mechanism platform component to contact the top platform or upper shim block, and lowered to separate from the top platform or upper shim block.

[0009] Preferably, during the lifting operation, the lifting mechanism platform component drives the raised block to move upward until the raised block contacts the top platform and bears the load. The pin mechanism extends to a clearance position, causing the pin to move outward synchronously, placing the pin outside the rising path of the raised block. This leaves space for the raised block on the lifting mechanism platform component to rise. After the raised block rises to a predetermined position, the pin mechanism retracts, causing the pin to move inward synchronously and insert into the bottom of the raised block. Subsequently, during the descent of the lifting mechanism platform component, the load is borne by the pin mechanism, and the lifting mechanism platform component descends to its initial position. During the descent operation, the lifting mechanism platform rises to contact and support the load of the raised block. The pin mechanism extends to a retracted position, causing the pin to move outward synchronously. The pin mechanism retracts from the bottom of the raised block, and the lifting mechanism platform drives the raised block and the top platform to descend together. After descending a certain height, the pin mechanism retracts, causing the pin to move inward synchronously. The pin mechanism inserts into and supports the bottom of the top platform, and the load is transferred back to the pin mechanism. This timing control method forms a mechanical interlocking safety mechanism. During lifting, the lifting mechanism platform only resets after ensuring the raised block is reliably supported; during descent, the raised block is only removed after ensuring the top platform is reliably supported. This effectively prevents the risk of instantaneous load loss of control due to misoperation, greatly improving the intrinsic safety of the equipment. Compared to existing technologies that rely on sensors and PLC programs for safety interlocking, the method of this invention is simpler, more reliable, and less costly.

[0010] Preferably, the latch mechanism includes: At least one pin cylinder is fixedly mounted above the base frame; The left and right pins are connected to the pin cylinder, allowing the operation of the cylinder to drive the left and right pins to move synchronously or independently in the lateral direction. This single-cylinder-driven structure ensures the synchronicity and consistency of the left and right pin movements, avoiding problems such as uneven force distribution, jamming, or even damage to the raised block or top platform caused by asynchronous pin movements. This structure greatly simplifies the drive and control system, requiring only one cylinder and corresponding piping and valves. Compared to existing technologies that require complex pin extension cylinders and sensors installed independently at multiple locations, this structure is more compact, has a lower failure rate, and is easier to maintain.

[0011] Preferably, the lifting mechanism platform component includes: Lifting cylinder; The lifting bracket is fixedly connected to the lifting cylinder; A guiding device is used to guide the vertical movement of the lifting bracket. As the component directly supporting the raised block, the lifting bracket converts the concentrated thrust of the lifting cylinder into a stable planar support. In particular, the guiding device effectively overcomes the radial bending moment or swaying problems that may occur when the lifting cylinder is subjected to eccentric loads, ensuring that the lifting bracket and the entire lifting process move smoothly only in the vertical direction. This greatly improves the structural rigidity and motion stability of the equipment, thereby guaranteeing the accuracy and safety of lifting heavy objects.

[0012] Preferably, the guiding device includes: At least one guide rod is fixedly connected to the lifting bracket; The guide seat is fixedly connected to the lifting cylinder, and the guide rod is slidably engaged with the guide seat. The guiding device has a simple structure and strong load-bearing capacity. It provides precise guidance and reliable lateral support for the vertical movement of the lifting bracket, effectively preventing twisting or tilting of the bracket during lifting and ensuring that the raised block is always lifted or lowered in a vertical and centered state. This purely mechanical guiding method is more robust, durable, and requires no additional control than the complex designs of existing technologies that may rely on multiple guiding elements.

[0013] Preferably, the feeding platform includes: A pair of guide plates are positioned on both sides of the feeding platform to guide the placement and lateral positioning of the raised blocks. The guide plates provide an intuitive and reliable positioning and guiding channel for manually pushing the raised blocks. This allows the operator to easily and accurately push the raised blocks to the predetermined positions on the lifting bracket, significantly reducing the alignment difficulty and error rate of manual operation and improving feeding efficiency.

[0014] Preferably, the top platform includes: A top saddle, positioned above the top platform, features adjustable height and angle mechanisms. The bottom of the top saddle has a threaded structure. This adjustable saddle allows the device to adapt to objects of different shapes and contact surface angles. The height can be adjusted to fit the load-bearing surface of the object, and the spherical connection inside the saddle allows for angle adjustment to ensure proper angular contact. Through simple threaded rotation and spherical connection adjustment, the top of the saddle can be tightly fitted to the bottom of the object, transforming concentrated loads into distributed loads, improving stress distribution, and preventing the risk of the object slipping due to unstable contact during lifting. This enhances the versatility and applicability of the equipment, overcoming the shortcomings of existing lifting platforms that may not be well-suited for irregular objects.

[0015] Preferably, the raised block is a single, lightweight structure configured for manual handling and placement on the feeding platform by a single person. The raised block's lightweight, single-unit design makes it portable and operable by a single person. The entire equipment is also designed for lightweight operation, enabling manual handling, placement, and pushing of the raised blocks by a single person. This fundamentally solves the problem of prioritizing heavy loads and automation at the expense of portability in existing technologies, greatly improving work efficiency and convenience in light-duty, high-frequency operations.

[0016] Compared with the prior art, the present invention achieves the following beneficial technical effects: This invention features a compact structure and strong spatial adaptability. By integrating the lifting mechanism platform components within the lifting base components and simplifying the structure of the feeding platform, it eliminates the complex material preparation system, automatic feeding platform, and multiple sensors found in existing technologies. This results in a compact overall structure with high integration. It effectively overcomes the shortcomings of existing technologies, such as large size and extensive footprint, enabling flexible application in indoor, workshop corners, or other space-constrained working environments.

[0017] This invention offers reliable operation and smooth load transfer. Through the coordinated operation of the pin mechanism and the lifting platform components, the load is transferred smoothly and orderly between the cylinder and the pin during lifting and lowering. The sliding fit between the guide rod and the guide seat ensures the stability of the lifting bracket's movement. This mechanical interlocking mechanism simplifies control while guaranteeing the safety and reliability of the lifting process.

[0018] This invention reduces reliance on external power and control, resulting in better economic efficiency. The core lifting and pinning actions of the jacking equipment are accomplished solely by the lifting cylinder and pinning cylinder, while the feeding process relies on manual operation, eliminating the need for complex PLC controllers and numerous displacement and position sensors. This significantly reduces the equipment's manufacturing costs, energy consumption, and dependence on professional maintenance, making it more suitable for construction sites without a stable power supply or requiring rapid deployment, thus significantly improving its economic efficiency and practicality.

[0019] This invention offers flexible operation and wide applicability. By manually pushing the shims, operators can flexibly control the quantity and pace of shims according to the actual lifting height requirements on site, breaking the rigid limitations of existing automated processes. This makes the equipment suitable not only for lifting heavy objects but also for small-to-medium scale, high-frequency, or non-standardized work scenarios, greatly enhancing operational flexibility. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the lightweight lifting device of this utility model.

[0021] Figure 2 This is a schematic diagram of the lifting base component of the lightweight lifting device of this utility model.

[0022] Figure 3 This is a schematic diagram of the platform component structure of the lightweight lifting equipment of this utility model.

[0023] In the diagram: 1-Lifting base component, 10-Pin mechanism, 11-Base frame, 12-Pin cylinder, 13-Left pin, 14-Right pin, 2-Lifting mechanism platform component, 21-Lifting cylinder, 22-Lifting bracket, 23-Guide rod, 24-Guide seat, 3-Feeding platform, 31-Guide plate, 4-Top platform, 41-Top saddle, 5-Elevating block. Detailed Implementation

[0024] The following will be combined with the appendix Figures 1 to 3 The present invention will be described in detail with reference to specific embodiments, so that those skilled in the art can more clearly understand the implementation of the present invention.

[0025] Example: Refer to Figure 1 As shown, this utility model provides a lightweight lifting device, mainly composed of a lifting base component 1, a lifting mechanism platform component 2, a feeding platform 3, and a top platform 4. The lifting base component 1 forms the basic frame of the device, and the lifting mechanism platform component 2 is fixedly installed inside it. A feeding platform 3 extends from the front of the lifting base component, and the feeding platform 3 is used to receive and guide the raised blocks 5 manually placed by the operator. At the top of the device, the top platform 4 directly supports the heavy object to be lifted. The raised blocks 5 used in the lifting operation are lightweight single-unit structures that can be manually moved and placed by the operator.

[0026] Reference Figure 2 As shown, the lifting base component 1 includes a base frame 11. A pin mechanism 10 is fixedly installed above the base frame 11. In this embodiment, the pin mechanism 10 consists of a pin cylinder 12, and a left pin 13 and a right pin 14 that are pulsatorically connected to the cylinder. The action of the pin cylinder 12 can drive the left and right pins to move synchronously towards or away from each other in the horizontal direction, thereby enabling them to enter the path of the raised block 5 to provide support, or to exit the path to allow the raised block 5 to pass.

[0027] Reference Figure 3 As shown, the lifting mechanism platform component 2 is located inside the lifting base component 1. The lifting mechanism platform component 2 consists of a lifting cylinder 21, a lifting bracket 22 fixedly connected to the piston rod of the lifting cylinder 21, and a guide device. The guide device includes at least one guide rod 23 fixedly connected to the lifting bracket 22, and a guide seat 24 slidably engaged with it. The guide seat 24 is fixedly connected to the cylinder body of the lifting cylinder 21. When the lifting cylinder 21 is activated, it drives the lifting bracket 22 to rise and fall. The sliding pair formed by the guide rod 23 and the guide seat 24 ensures that the lifting bracket 22 moves smoothly in a strictly vertical direction, preventing jamming caused by uneven loading.

[0028] As can be seen from the above, the core innovation of this utility model lies in its unique load transfer and conversion mechanism, which is achieved through the coordinated operation of two core mechanisms: the pin mechanism 10 and the lifting platform component 2. The pin mechanism, integrated into the lifting base component, functions by selectively engaging or disengaging from the movement path of the raised block through the extension and retraction of its pin elements. This reliably receives the load from the raised block or the top platform at critical points during the lifting or lowering process. The lifting platform component 2, as the power actuator of the equipment, drives the raised block to perform precise vertical lifting and lowering movements. During operation, the lifting platform component 2 lifts the raised block upwards until it contacts the top platform and bears the load. Subsequently, the pin mechanism quickly intervenes, extending and supporting the raised block, allowing the lifting platform component 2 to unload and lower, preparing for the next cycle. Through the alternating action of these two mechanisms, the gradual and steady lifting of the load is achieved. The lowering process is the opposite; through their coordination, the safe and controllable lowering of the load is achieved.

[0029] Reference Figure 1 As shown, a pair of guide plates 31 are provided on both sides of the feeding platform 3, forming a guide channel, which facilitates the operator to manually push the shim block 5 into the equipment along the platform and accurately deliver it to the predetermined position on the lifting bracket 22. A top saddle 41 is installed above the top platform 4. The top saddle has an adjustable height and angle mechanism. The bottom of the top saddle has a threaded structure. The adjustable top saddle enables the equipment to adapt to objects with different shapes and contact surface inclinations. The height can be adjusted to fit the bearing surface of the load object, and the spherical connection inside the saddle can adjust the angle to fit the angular direction, so that the top of the saddle can fit tightly to the object to be lifted with different contours, ensuring load stability.

[0030] To facilitate understanding of the above technical solutions of this utility model, the following detailed description of the above technical solutions of this utility model is provided through specific usage methods.

[0031] The specific working process is as follows: When lifting is required, the operator manually pushes a shim block 5 along the guide plate 31 of the feeding platform 3 until it is delivered to the lifting bracket 22 of the lifting mechanism platform component 2. The lifting cylinder 21 is activated, and its piston rod extends, driving the shim block 5 upward through the lifting bracket 22. After the top of the shim block 5 contacts and abuts against the top platform 4, the entire load of the equipment is transferred to the lifting cylinder 21. At this time, the pin cylinder 12 of the pin mechanism 10 of the lifting base component 1 is activated, causing its piston rod to extend and push the left pin 13 and right pin 14 to move outward simultaneously, leaving space for the shim block 5 on the lifting mechanism platform component 2 to rise. After the shim block 5 rises to the predetermined position, the pin cylinder 12 of the pin mechanism 10 of the lifting base component 1 is activated again, causing its piston rod to retract and pushing the left pin 13 and right pin 14 to move inward simultaneously, inserting them under the bottom of the shim block 5. Subsequently, the piston rod of the lifting cylinder 21 retracts, causing the lifting bracket 22 to descend. At this time, the load is borne by the pin mechanism 10. The lifting bracket 22 descends to its initial position, ready for the next loading and lifting of the shim block 5. By repeating the above steps, the heavy object can be lifted step by step.

[0032] When a lowering operation is required, the lifting cylinder 21 is activated, and the lifting bracket 22 rises until it supports the bottom of the lowest support block 5, transferring the load from the pin mechanism 10 to the lifting cylinder 21. The pin cylinder 12 is then activated, causing the left and right pins to move synchronously to the sides, retracting from the bottom of the support block 5. The piston rod of the lifting cylinder 21 retracts, smoothly lowering the lifting bracket 22, the support block 5, and the top platform 4 together. After lowering to a certain height, the pin cylinder 12 actuates, causing the left and right pins to move inward, inserting and supporting the bottom of the top platform 4, transferring the load back to the pin mechanism 10. The lifting cylinder 21 continues to lower, and the operator can manually remove the removed support block 5 from the feeding platform 3. By repeating the above steps, the heavy object can be lowered step by step safely.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] It should be noted that in this invention, 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, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A lightweight lifting device for lifting and lowering objects, characterized in that, include Lifting base component (1); The lifting mechanism platform component (2) is disposed inside the lifting base component (1) and is fixedly connected to the lifting base component (1); A feeding platform (3) is located on the front side of the lifting base component (1) and is fixedly connected to the lifting base component (1). The feeding platform (3) is configured to manually receive and guide the lifting blocks (5). A top platform (4) is disposed above the lifting mechanism platform component (2) and is used to support the object; The lifting base component (1) includes a pin mechanism (10) which is movable to insert into and out of the path of the shim block (5) to selectively support the shim block (5) or the top platform (4). The lifting mechanism platform component (2) drives the shim block (5) to move vertically, so that the shim block (5) is lifted by the lifting mechanism platform component (2) to contact the top platform (4) or the upper shim block (5), and lowered to separate from the top platform (4) or the upper shim block (5).

2. The lightweight lifting device according to claim 1, characterized in that, During the lifting operation, the lifting mechanism platform component (2) drives the shim block (5) to move upward until the shim block (5) contacts the top platform (4) and bears the load. The pin mechanism (10) extends to the open position, so that the pin moves outward synchronously and is located outside the rising path of the shim block (5). Space is left for the shim block (5) on the lifting mechanism platform component (2) to rise. After the shim block (5) rises to the predetermined position, the pin mechanism (10) retracts, so that the pin moves inward synchronously and is inserted into the position below the bottom of the shim block (5). Then, during the descent of the lifting mechanism platform component (2), the load is borne by the pin mechanism (10), and the lifting mechanism platform component (2) descends to the initial position. During the descent operation, the lifting mechanism platform component (2) rises to contact and bear the load of the shim block (5), the pin mechanism (10) extends to the open position, causing the pin to move outward synchronously, the pin mechanism (10) retracts from the bottom of the shim block (5), the lifting mechanism platform component (2) drives the shim block (5) and the top platform (4) to descend together, after descending a certain height, the pin mechanism (10) retracts, causing the pin to move inward synchronously, the pin mechanism (10) inserts into and supports the bottom of the top platform (4), and the load is transferred to the pin mechanism (10) again.

3. The lightweight lifting device according to claim 2, characterized in that, The latching mechanism (10) includes: At least one pin cylinder (12) is fixedly mounted above the base frame (11); The left pin (13) and the right pin (14) are connected to the pin cylinder (12) so that the operation of the pin cylinder (12) can drive the left pin (13) and the right pin (14) to move synchronously or independently in the lateral direction.

4. The lightweight lifting device according to claim 2, characterized in that, The lifting mechanism platform component (2) includes: Lifting cylinder (21); The lifting bracket (22) is fixedly connected to the lifting cylinder (21); A guiding device is used to guide the vertical movement of the lifting bracket (22).

5. The lightweight lifting device according to claim 4, characterized in that, The guiding device includes: At least one guide rod (23) is fixedly connected to the lifting bracket (22); The guide seat (24) is fixedly connected to the lifting cylinder (21), and the guide rod (23) is slidably engaged with the guide seat (24).

6. The lightweight lifting device according to claim 2, characterized in that, The feeding platform (3) includes: A pair of guide plates (31) are provided on both sides of the feeding platform (3) to guide the placement and lateral positioning of the shim block (5).

7. The lightweight lifting device according to claim 1, characterized in that, The top platform (4) includes: The top saddle (41) is located above the top platform (4). The top saddle (41) has a mechanism for adjusting height and angle. The bottom of the top saddle has a threaded structure, which can adjust the height to fit the bearing surface of the load object. The spherical connection inside the saddle can adjust the angle to fit the angle direction.

8. The lightweight lifting device according to claim 1, characterized in that, The raised block (5) is a single lightweight structure configured to be manually moved and placed on the feeding platform (3) by a single person.

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