Lightweight jacking device spacer block

Abstract

The utility model discloses a light -duty jacking equipment cushioning block relates to jacking equipment technical field. Including at least two cushioning block support leg, connecting mechanism and positioning mechanism. Cushioning block support leg has upper surface and lower surface, and is equipped with boss portion in upper surface both ends, and is equipped with convex positioning portion on boss portion, and is equipped with recessed positioning portion in lower surface, and connecting mechanism includes connecting rod and the threaded hole of support leg side end, and the cushioning block support leg is fixedly connected as support frame through screw thread connection, and is equipped with half recessed groove connecting block between two boss portions, and forms the spacing whole groove between it and cushioning block support leg lower surface. The utility model discloses through screw thread connection and positioning pin hole cooperation, realized the mechanical fastening and accurate alignment between module, thoroughly overcomeed the defect of unstable magnetic attraction connection, and the unique spacing whole groove design provided the convenient operation space for taking and placing cushioning block and plugging positioning pin when stacking. The cushioning block has the advantages of reliable connection, strong lateral force, high carrying capacity, good modular degree and convenient operation, and is suitable for various jacking scenes.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a jacking device for lifting heavy objects, specifically a lightweight jacking equipment jacking block with stable structure and modular stackability. Background Technology

[0002] In lifting heavy objects, the lifting height is often adjusted gradually by adding or removing shims at the bottom of the lifting equipment (such as jacks) due to the limited lifting stroke of the equipment itself, in order to meet the final work requirements. This operation requires the shims to have stable load-bearing capacity, reliable stacking connection, and modular characteristics that facilitate handling and assembly.

[0003] Currently, the existing technical solutions for achieving the elevation function mainly fall into the following categories, but each has its own obvious drawbacks: For example, Chinese patent document CN2723418Y discloses a load assembly with raised blocks, which uses magnetic attraction to stack the raised blocks by placing magnets on the surface of the load assembly and the raised blocks. Although this solution provides a quick connection method, it also has obvious drawbacks: First, the magnets may weaken or fail after being subjected to huge impacts or long-term heavy loads, posing a safety hazard; second, the magnetic connection method has weak resistance to lateral forces, and the raised blocks are prone to slippage when subjected to horizontal force, leading to instability of the stack; third, this solution has special requirements for the material of the raised blocks and the load assembly body (it must be a magnetically attractive material), limiting its application range.

[0004] For example, Chinese patent document CN207973445U discloses a jack with a raising structure, which adjusts the height by setting a sliding seat with a accommodating space on the jack base and using a stopper inserted into the corresponding hole of the base and the sliding seat. This solution integrates the raising structure with the jack base, but its main drawbacks are: first, the structure is complex, the manufacturing cost is high, and the entire device is bulky, losing its portability; second, the height adjustment is discrete and stepped, relying on preset hole positions, and cannot achieve flexible and continuous combination, and the adjustment range is limited by the design of the sliding seat; third, this integrated structure cannot be used as an independent, modular raising unit in conjunction with other types of lifting equipment, resulting in poor versatility.

[0005] In summary, existing jacking solutions either suffer from unreliable connections and poor stability, or are structurally complex, lack portability, and have limited versatility. Therefore, there is an urgent need in this field for a jacking block that can ensure both stable connections and load-bearing capacity, while also being lightweight, modular, flexibly combinable, and suitable for various lifting devices. Utility Model Content

[0006] The problem this utility model aims to solve is that existing jacking blocks suffer from unreliable connections, poor resistance to lateral forces, complex and heavy structures, and weak versatility. The purpose of this utility model is to provide a lightweight jacking block that is structurally stable, reliably connected, has a strong load-bearing capacity, is highly modular, and is easy to transport.

[0007] To solve the above problems, this utility model provides a lightweight jacking equipment shim block, comprising: At least two shim blocks have legs, each of which has an upper surface and a lower surface; A connecting mechanism for detachably connecting the at least two raised block legs to form a support frame; The positioning mechanism includes at least one protruding positioning part disposed on the upper surface and at least one recessed positioning part disposed on the lower surface. The protruding positioning part and the recessed positioning part cooperate with each other. When multiple shims are stacked, the recessed positioning part of the upper shim engages with the protruding positioning part of the lower shim to achieve alignment and resist lateral forces.

[0008] Preferably, the connecting mechanism includes at least one connecting rod and a threaded hole disposed on the inner edge of the side end of the support leg of the shim block. The connecting rod has threaded rod heads at both ends. By screwing the threaded rod heads into the threaded hole, the two support legs of the shim block can be firmly connected as one unit.

[0009] Preferably, the protruding positioning part is a positioning pin, and the recessed positioning part is a positioning hole; the top of the positioning pin is provided with a guide cone surface. Since the top of the positioning pin is provided with a guide cone surface, even if there is a slight deviation, it can be easily guided and corrected, which facilitates quick and accurate insertion into the positioning hole during stacking, so as to achieve fast and accurate alignment.

[0010] Preferably, the support legs, connecting mechanism, and positioning mechanism of the raised block are all made of high-strength metal materials.

[0011] Preferably, the upper surface of the support leg of the bolster is provided with bosses at both ends, and the protruding positioning part is provided at the upper end of the bosses. This structure enhances the local strength and force-bearing area of ​​the top of the support leg of the bolster.

[0012] Preferably, a semi-recessed connecting block connects the two protrusions, and a limiting groove is formed between the semi-recessed connecting block and the lower surface of the support leg. The cavity formed by the limiting groove provides the necessary space for the operator to insert and remove the positioning pin device to engage with the limiting groove and thus place and remove the shim block, greatly improving the ease of use. The overall hollowed-out part can provide hand operating space for handling and can also make the shim block lightweight, avoiding the contact surface between the upper and lower shims when used as a tooling, and for load transfer.

[0013] Preferably, the side end of the boss portion is provided with a convex base extending to both ends, which further increases the contact area with the ground and the upper shim block, and improves the stability when using a single layer or multiple layers.

[0014] Compared with the prior art, the present invention achieves the following beneficial technical effects: This invention features a robust and highly safe connection. By employing a threaded mechanical fastening method combined with the precise fit of the locating pin holes, it completely overcomes the safety hazards that may occur with magnetic connections, such as magnetic force attenuation and slippage instability. The structure has strong resistance to lateral forces and maintains extremely high connection rigidity and stability under heavy load conditions, ensuring the safety of lifting operations.

[0015] This utility model features a modular structure that is flexible, convenient, and highly versatile. Each jack is an independent, standardized functional module that can be flexibly stacked in any number to meet lifting height requirements, offering strong scalability. Furthermore, this design is not tied to any specific lifting equipment and can be widely adapted to various types of jacks and other lifting devices, making it far more versatile than integrated jack structures.

[0016] This utility model features a lightweight yet high-load-bearing structure. While ensuring overall structural stability, it achieves weight reduction through hollow limiting grooves and semi-recessed connecting blocks, facilitating manual handling. The support legs of the raised blocks utilize an integrated design of the boss, semi-recessed connecting blocks, and limiting grooves. This not only optimizes stress distribution but also forms a highly rigid integral support column through mechanical interlocking during stacking, resulting in a load-bearing capacity far exceeding that of simple block stacking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the jacking block for the lightweight lifting equipment of this utility model.

[0018] Figure 2 for Figure 1 A magnified view of the connecting mechanism.

[0019] Figure 3 This is a schematic diagram of the structure of the support leg for the raised block.

[0020] Figure 4 A schematic diagram of the structure for stacking and assembling multiple lightweight lifting equipment shims.

[0021] In the figure: 1-Elevating block support leg, 11-Upper surface, 12-Lower surface, 13-Boss part, 14-Semi-groove connecting block, 15-Limiting groove, 16-Protruding base, 2-Connecting mechanism, 21-Connecting rod, 22-Threaded hole, 23-Threaded rod head, 3-Positioning mechanism, 31-Protruding positioning part, 32-Recessed positioning part, 33-Conical surface. Detailed Implementation

[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be emphasized that the embodiments described herein are for the purpose of aiding understanding of this utility model, and not for limiting the scope of protection of this utility model.

[0023] See Figures 1 to 4 As shown, the lightweight lifting equipment jack block provided by this utility model has a modular design. Each jack block unit is mainly composed of three parts: jack block support leg 1, connecting mechanism 2, and positioning mechanism 3.

[0024] See Figure 3 As shown, the support leg 1 of the raised block is the main load-bearing component of the entire raised block, and usually two are provided, made of high-strength metal such as alloy steel. Each support leg 1 has an upper surface 11 and a lower surface 12. The upper surface 11 has protrusions 13 at both ends, which increases the load-bearing area and structural strength at the top. A semi-recessed connecting block 14 is connected between the two protrusions 13, forming a through space, i.e., a limiting groove 15, between this connecting block 14 and the lower surface 12 of the raised block support leg 1. In addition, the side ends of the protrusions 13 are provided with convex bases 16 extending to both sides to increase the contact area with the ground or the upper raised block and improve stability. The overall hollow part can provide hand operation space for handling, and can also be used for weight reduction of the raised block, avoiding the contact surface between the upper and lower raised blocks in the tooling state, and for load transfer.

[0025] See Figure 1 and Figure 2 As shown, the connecting mechanism 2 is used to reliably connect the two support legs 1 of the raised blocks into a stable support frame. Specifically, the connecting mechanism 2 includes at least one connecting rod 21. Threaded holes 22 are formed on the inner edge of the side end of each support leg 1, corresponding to the positions of the two ends of the connecting rod 21. Threaded rod ends 23 that are adapted to the threaded holes 22 are machined at both ends of the connecting rod 21. During assembly, the threaded rod ends 23 at both ends of the connecting rod 21 are screwed into the threaded holes 22 of the two support legs 1, thus firmly connecting the two into one unit.

[0026] See Figure 1 and Figure 2 As shown, the positioning mechanism 3 is used to achieve rapid alignment and resist lateral forces when multiple shims are stacked vertically. The positioning mechanism 3 includes a protruding positioning part 31 and a recessed positioning part 32. In this embodiment, the protruding positioning part 31 is preferably a positioning pin with a guide cone surface 33 machined on its top; the recessed positioning part 32 is a positioning hole that cooperates with the positioning pin. The protruding positioning part 31 is fixedly installed on the boss part 13 on the upper surface 11 of the support leg 1, while the recessed positioning part 32 is opened at the corresponding position on the lower surface 12 of the support leg 1.

[0027] 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.

[0028] The jacking block of this invention can be used individually or stacked in multiple layers according to the required lifting height. The specific working process and stacking method are as follows: When the lifting height needs to be increased, the stacking operation is as follows: First, the operator inserts the positioning pin device into the limiting slot 15 to place the first shim unit under the lifting equipment such as a jack. Then, the second shim unit is taken and lowered, aligning the recessed positioning part 32 on the lower surface 12 of the second shim with the raised positioning part 31 on the upper surface 11 of the first shim. Because the top of the positioning pin has a guide cone surface 33, even minor deviations can be easily guided and corrected, achieving quick and accurate alignment. Once the positioning pin is fully inserted into the positioning hole, the lower surface 12 of the second shim will be tightly fitted against the upper end face of the protrusion 13 of the first shim. Repeating the above steps allows for the stable stacking of more shims, forming a highly rigid integral support column.

[0029] This invention also provides another implementation method, in which the shim block can be used in conjunction with an automated or semi-automated lifting system to achieve the step-by-step lifting of heavy objects. The specific working process is as follows: The operator first pushes a shim block into the lifting work area through a horizontal conveying mechanism such as a guide rail, accurately placing it on the lifting bracket of the system. The lifting drive unit of the system, such as a hydraulic cylinder or an electric push rod, is activated, and its power output end pushes the lifting bracket and the shim block upward together. When the upper surface of the shim block contacts and compacts with the upper support platform or the bottom surface of the already positioned heavy object, the entire load of the system is borne by the shim block and the lifting drive unit. At this time, the control system will trigger the locking mechanism set on the base. The power element of the locking mechanism, such as a hydraulic cylinder or a pneumatic cylinder, drives its locking component, such as a pin or wedge, to extend outward, moving out of the gap or cavity reserved on the side or bottom of the shim block support leg, such as the aforementioned limiting groove 15, leaving the necessary space path for the lifting bracket and the next shim block on it to continue to rise.

[0030] Once the lifting bracket drives the new shim block to the predetermined height, precisely aligning and engaging the recessed positioning part on its lower surface with the raised positioning part on the upper surface of the already supported shim block below, the power element of the locking mechanism reverses its action, driving the locking component to reset inwards, inserting it under the bottom of the newly positioned shim block to form reliable mechanical support. Subsequently, the lifting drive unit unloads and drives the lifting bracket to descend and reset, transferring the load of the entire system to the stack of shims supported by the locking component. After the lifting bracket returns to its initial position, the loading and lifting operation of the next shim block can begin. Repeating this cycle achieves stable, step-by-step lifting of heavy objects.

[0031] This invention, through its innovative mechanical connection and positioning structure, successfully overcomes the shortcomings of existing technologies and provides a safe, reliable, flexible, and convenient solution for raising lifting equipment.

[0032] 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.

[0033] 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.

[0034] 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 jacking device shim block, characterized in that, include: At least two bolster legs (1), each bolster leg (1) having an upper surface (11) and a lower surface (12); A connecting mechanism (2) is used to detachably connect the at least two raised block legs (1) to form a support frame; The positioning mechanism (3) includes at least one protruding positioning part (31) disposed on the upper surface and at least one recessed positioning part (32) disposed on the lower surface. The protruding positioning part (31) and the recessed positioning part (32) cooperate with each other. When multiple shims are stacked, the recessed positioning part (32) of the upper shim engages with the protruding positioning part (31) of the lower shim to achieve alignment and resist lateral force.

2. The lightweight jacking equipment shim block according to claim 1, characterized in that, The connecting mechanism includes at least one connecting rod (21) and a threaded hole (22) disposed on the inner edge of the side end of the raised block leg (1). The connecting rod (21) has a threaded rod head (23), which is threadedly connected to the threaded hole (22) to fix the at least two raised block legs (1).

3. The lightweight jacking device shim block according to claim 1, characterized in that, The raised positioning part (31) is a positioning pin, the recessed positioning part (32) is a positioning hole, and the top of the raised positioning part (31) is provided with a conical surface (33) to facilitate alignment with the recessed positioning part (32).

4. The lightweight jacking equipment shim block according to claim 1, characterized in that, The support legs (1), connecting mechanism (2) and positioning mechanism (3) of the raised block are all made of high-strength metal materials.

5. The lightweight jacking equipment shim block according to claim 1, characterized in that, The upper surface of the support leg (1) of the bolster block is provided with two protrusions (13) at both ends, and the protruding positioning part (31) is provided on the upper end of the protrusion (13).

6. The lightweight jacking equipment shim block according to claim 5, characterized in that, The two bosses (13) are connected by a semi-grooved connecting block (14), and a limiting groove (15) is formed between the semi-grooved connecting block (14) and the lower surface (12) of the support leg (1) of the raised block.

7. The lightweight jacking equipment shim block according to claim 6, characterized in that, The boss portion (13) has a convex base (16) extending to both ends on its side.

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