Novel counterweight guide mechanism

Abstract

The utility model discloses a novel counterweight guide mechanism, which relates to the technical field of logistics equipment and comprises a counterweight frame, a guide rail, a shock-absorbing universal ball with an internal spring and a chain connecting rod. The guide rails are two pieces of equilateral angle steel welded to the inner sides of the stand columns, the shock-absorbing universal balls with the springs inside are attached to the outer side wall of the balance weight frame in a locked mode, the ball ends of the universal balls are attached to the guide faces of the equilateral angle steel through compression springs, and the chain connecting rods are used for being connected with the lifting tray. The equilateral angle steel is adopted to replace a traditional linear guide rail and matched with the shock-absorbing spring universal ball to achieve low-precision installation adaptation, the equilateral angle steel can be formed without precision machining and welding, and the cost is reduced compared with that of the linear guide rail. The balance weight frame is located between the two stand columns and suitable for compact equipment. The problems that an existing linear guide rail guiding mechanism is high in installation precision and cost and large in occupied space are solved, the technical effects of being low in cost, easy to install and capable of saving space are achieved, and the linear guide rail guiding mechanism is suitable for various logistics hoisters and lifters.

Description

Technical Field

[0001] This utility model relates to the field of logistics equipment technology, and in particular to a novel counterweight guiding mechanism. Background Technology

[0002] In modern logistics systems, elevators are core equipment for vertical cargo transportation, and the performance of their counterweight guiding mechanism directly affects the system's stability, safety, and operational efficiency. The main function of the counterweight guiding mechanism is to balance the weight of the lifting pallet and load, reduce the power consumption of the lifting motor, and ensure that the counterweight moves smoothly along a fixed direction, avoiding swaying and collisions. Traditional counterweight guiding mechanisms generally use linear guides as guiding components, achieving vertical movement of the counterweight through the cooperation of a slider and the guide rail. While this solution meets basic guiding requirements, it has the following significant drawbacks:

[0003] The installation accuracy requirements are stringent: the normal operation of the linear guide rail depends on a high-precision installation foundation. It is necessary to ensure the levelness (error ≤ 0.1mm / m), straightness (error ≤ 0.2mm), and parallelism between the two guide rails (error ≤ 0.3mm). Otherwise, it is easy to cause the slider to jam, wear, or even damage, which will seriously affect the reliability of the hoist operation.

[0004] High cost: The linear guide rail and its matching high-precision mounting parts (such as machined mounting surfaces) are expensive to manufacture, and the installation and commissioning process is complex, requiring professional tools and personnel, which increases the overall investment cost of the hoist by 30%-50%.

[0005] Large space occupation: Traditional guiding mechanisms usually place the counterweights in front of and behind the column, which requires a large amount of additional installation space, especially in narrow logistics environments, making it difficult to meet the design requirements of compact equipment.

[0006] Insufficient adaptability: For small and medium-sized logistics equipment or on-site rapid installation scenarios, the high precision requirements of linear guides and the need for convenience are in prominent conflict, and there is a lack of effective vibration buffer design. Long-term operation is prone to accelerated wear and tear due to sudden load changes.

[0007] As logistics equipment evolves towards lightweight, low-cost, and modular designs, the shortcomings of traditional linear guide mechanisms in terms of installation convenience, cost control, and space utilization are becoming increasingly apparent. The market urgently needs a new type of counterweight guiding solution that requires low installation precision, is cost-effective, and saves space to meet diverse logistics improvement needs.

[0008] To address the aforementioned issues, this utility model provides a novel counterweight guiding mechanism. Through an innovative combination of a shock-absorbing internal spring universal ball joint and an equilateral angle steel, it breaks through the technical bottleneck of traditional linear guides, achieving the technical effects of low installation accuracy requirements, low cost, and space optimization, providing a more efficient and reliable solution for counterweight guidance in logistics lifting machines. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a novel counterweight guiding mechanism that solves the technical problems of high installation accuracy requirements, high cost, and large space occupation of traditional linear guide counterweight guiding mechanisms.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A novel counterweight guiding mechanism includes a counterweight frame, a guide rail, a shock-absorbing, spring-loaded universal ball joint, and a chain connecting rod.

[0012] The counterweight frame is used to hold the counterweight blocks. The guide rail includes two equilateral angle steels welded to the inside of the elevator column. Shock-absorbing, internally spring-loaded universal ball joints are locked to the outer wall of the counterweight frame, and the ball end of the shock-absorbing, internally spring-loaded universal ball joint contacts the guide surface of the equilateral angle steel. The chain connecting rod is locked to the upper part of the counterweight frame and is used to connect the lifting tray via the chain.

[0013] Preferred: The shock-absorbing, spring-loaded universal ball joint includes universal balls, a compression spring, and an external threaded connection.

[0014] The external threaded connection passes through the side wall of the counterweight frame and is fixed by a nut. One end of the compression spring abuts against the inner wall of the counterweight frame, and the other end abuts against the universal ball bearing, so that the universal ball bearing adheres to the guide surface of the equilateral angle steel by the elastic force of the compression spring.

[0015] Preferably, equilateral angle steel is welded parallel to the vertical direction of the elevator column, and the two equilateral angle steels are located on both sides of the counterweight frame to form a symmetrical guide structure.

[0016] Preferably, the counterweight frame has a cuboid frame structure, and shock-absorbing internal spring universal balls are evenly distributed on both sides of the counterweight frame, with at least two shock-absorbing internal spring universal balls on each side wall.

[0017] Preferred design: The chain connecting rod is a horizontally arranged rod-shaped structure, with both ends fixed to the crossbeam at the top of the counterweight frame by bolts, and a chain connecting hole is provided in the middle of the chain connecting rod. The gap between the counterweight frame and the lifting column is less than 10mm. The new counterweight guiding mechanism is located between the two lifting columns, saving more than 50% of the space behind the columns compared with the traditional linear guide rail guiding structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] I. Compared to the traditional linear guide rail guiding mechanism, which relies on high-precision machine tool processing and complex debugging, this utility model uses equilateral angle steel welded to the inside of the column as the guide rail, which does not require precision processing. During installation, only basic verticality needs to be ensured. With the elastic compensation design of shock-absorbing internal spring universal ball (compression spring pushes universal ball attached to angle steel), the verticality deviation of the column can be tolerated ≤5mm, which significantly reduces the requirements for installation accuracy and matching machined parts.

[0020] Second, by designing the counterweight frame as a symmetrical structure located between the two columns, the space behind the columns required for counterweights in traditional linear guides is eliminated, reducing the lateral dimensions of the hoist and improving space utilization. Simultaneously, the 360° free rotation of the shock-absorbing internal spring-loaded universal ball joint and the spring's shock-absorbing function effectively reduce swaying and jamming during lifting, lower equipment wear, and extend the service life of the guide mechanism, making it particularly suitable for high-frequency logistics transportation scenarios. Attached Figure Description

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram showing the positions of the guide rail and the counterweight in this utility model;

[0023] Figure 2 This is a schematic diagram of the overall design of this utility model;

[0024] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 This is a schematic diagram showing the positions of the universal ball bearing and the compression spring in this utility model.

[0026] Legend: 1. Counterweight frame; 2. Guide rail; 3. Shock-absorbing ball joint with internal spring; 4. Chain connecting rod; 5. Counterweight block; 6. Lifting platform column; 7. Lifting tray; 31. Universal ball bearing; 32. Compression spring; 8. Equal angle steel. Detailed Implementation

[0027] This application provides a novel counterweight guiding mechanism, which effectively solves the technical problems of high installation accuracy requirements, high cost, and large space occupation of traditional linear guide counterweight guiding mechanisms.

[0028] Example

[0029] like Figure 1 , Figure 2 , Figure 3, Figure 4 As shown, the overall technical solution in this application embodiment is as follows:

[0030] To address the problems existing in the prior art, this utility model provides a novel counterweight guiding mechanism, the overall structure and components of which are as follows:

[0031] Counterweight Frame 1:

[0032] Structure: It has a rectangular frame structure, which is welded from steel. The interior is used to place the counterweight 5. The position of the counterweight 5 is fixed by the frame structure to ensure the stability of the center of gravity during the lifting process.

[0033] Dimensions: Designed according to the load requirements of the hoist, the height is adapted to the hoist column 6, and the width is smaller than the distance between the two hoist columns 6 so that it can be installed between the two hoist columns 6.

[0034] Guide rail 2:

[0035] Structure: Composed of two equilateral angle steels 8, with a side length of 50-100mm (adjusted according to load), which are welded parallel to the vertical direction of the lifting column 6 to the inner side of the lifting column 6 to form a symmetrical guide structure.

[0036] Installation: Two equilateral angle steels 8 are located on the left and right sides of the counterweight frame 1, respectively, and are welded perpendicularly to the inner wall of the elevator column 6. The welding error is ≤2mm to ensure verticality.

[0037] Shock-absorbing ball joint with built-in spring 3:

[0038] composition:

[0039] Universal ball bearing 31: Made of steel ball bearings with surface hardening treatment, diameter 20-30mm, can rotate freely 360° and contact the guide surface of equilateral angle steel 8.

[0040] Compression spring 32: elastic coefficient 5-10N / mm, one end abuts against the inner wall of counterweight frame 1, the other end pushes universal ball bearing 31 to attach to equilateral angle steel 8, ensuring gapless contact.

[0041] External thread connection: The M8 external thread passes through the side wall of the counterweight frame 1 and is locked with a nut on the outside, which can adjust the spring compression.

[0042] Distribution: 2-4 shock-absorbing, spring-loaded universal balls 3 are set on the left and right side walls of the counterweight frame 1, evenly distributed in the middle and lower part of the counterweight frame 1 to ensure balanced guiding force.

[0043] Chain connecting rod 4: A horizontal rod-shaped structure made of Q235 steel. Both ends are fixed to the crossbeam at the top of the counterweight frame 1 with bolts. A chain connecting hole is opened in the middle for connecting the lifting chain to achieve linkage with the lifting pallet 7.

[0044] Installation steps:

[0045] Two equilateral angle steels 8 are vertically welded along the inner side of the elevator column 6, with the spacing adjusted according to the width of the counterweight frame 1 to ensure that the counterweight frame 1 can move freely between the two angle steels.

[0046] The shock-absorbing, internally spring-loaded universal ball 3 is locked to the side wall of the counterweight frame 1 through the external thread connection. The adjusting nut makes the compression spring 32 in a pre-compression state (compression amount 5-10mm), ensuring that the universal ball 31 is tightly attached to the guide surface of the equilateral angle steel 8.

[0047] Place a counterweight 5 inside the counterweight frame 1, and connect the lifting chain of the lifting pallet 7 through the chain connecting rod 4 to complete the overall assembly.

[0048] Working principle:

[0049] When the lifting pallet 7 drives the counterweight frame 1 to rise and fall, the universal ball 31 with the shock-absorbing inner spring universal ball 3 rolls along the guide surface of the equilateral angle steel 8, realizing a vertical movement without jamming.

[0050] The elasticity of the compression spring 32 ensures that the universal ball bearing 31 always adheres to the angle steel, compensating for the installation error of the lifting column 6 (such as smooth operation when the verticality deviation is ≤5mm), and avoiding the jamming problem caused by insufficient installation accuracy of traditional linear guide rails.

[0051] The counterweight frame 1 is located between the two lifting columns 6. Compared with the traditional linear guide rail structure (the counterweight mechanism is located at the front and rear of the column), it saves more than 50% of the space behind the column, making it especially suitable for lifting machines in narrow spaces.

[0052] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A novel counterweight guiding mechanism, characterized in that, It includes a counterweight frame (1), a guide rail (2), a shock-absorbing ball joint with an internal spring (3), and a chain connecting rod (4); The counterweight frame (1) contains a counterweight block (5), and the guide rail (2) includes two lifting columns (6). The inner sides of the two lifting columns (6) are welded with equilateral angle steel (8). The shock-absorbing inner spring universal ball (3) is locked on the outer wall of the counterweight frame (1), and the ball end of the shock-absorbing inner spring universal ball (3) contacts the guide surface of the equilateral angle steel (8). The chain connecting rod (4) is locked to the upper part of the counterweight frame (1) and is connected to the lifting tray (7) by a chain.

2. The novel counterweight guiding mechanism as described in claim 1, characterized in that: The shock-absorbing, spring-loaded universal ball (3) includes a universal ball (31), a compression spring (32), and an external threaded connection. The external threaded connection (33) passes through the side wall of the counterweight frame (1) and is fixed by a nut. One end of the compression spring (32) abuts against the inner wall of the counterweight frame (1), and the other end abuts against the universal ball (31), so that the universal ball (31) is attached to the guide surface of the equilateral angle steel (8) by the elastic force of the compression spring (32).

3. The novel counterweight guiding mechanism as described in claim 1, characterized in that: Equilateral angle steel (8) is welded parallel to the vertical direction of the elevator column (6), and the two equilateral angle steels (8) are located on both sides of the counterweight frame (1) to form a symmetrical guide structure.

4. The novel counterweight guiding mechanism as described in claim 1, characterized in that: The counterweight frame (1) has a rectangular frame structure. Shock-absorbing internal spring universal balls (3) are evenly distributed on both sides of the counterweight frame (1), and at least two shock-absorbing internal spring universal balls (3) are provided on each side wall.

5. The novel counterweight guiding mechanism as described in claim 1, characterized in that: The chain connecting rod (4) is a horizontally arranged rod structure, with both ends fixed to the crossbeam at the top of the counterweight frame (1) by bolts, and a chain connecting hole is provided in the middle of the chain connecting rod (4).

6. The novel counterweight guiding mechanism as described in claim 1, characterized in that: The gap between the counterweight frame (1) and the elevator column (6) is less than 10mm, and the new counterweight guide mechanism is located between the two elevator columns (6).

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