Three-fulcrum forklift balancing weight detection tool

Abstract

The utility model relates to the technical field of counterweight detection, and provides a three-fulcrum forklift counterweight detection tool, which comprises a right baffle plate, a triangular plate, a right reinforcing rib assembly, a rear base plate, a rear reinforcing rib assembly, a base platform, a left reinforcing rib assembly, a left baffle plate, a left and right baffle plate reinforcing rib assembly, a gasket and a locking plate limiting plate. The components are firmly connected with the base platform through reinforcing ribs, the triangular plate positions the front, back, high and low positions of the balance weight, the right baffle and the left baffle detect the gap between the balance weight and the frame, the gasket limits the gap between the balance weight and the tailstock, and the locking plate limiting plate positions the tailstock locking plate. According to the utility model, the main mounting surface of the frame is simulated to be matched with the counterweight, so that whether the size of the counterweight is standard or not is determined, and the defects of low detection precision, low hoisting efficiency, high labor cost and non-standard welding process in the prior art are overcome.

Description

Technical Field

[0001] This utility model relates to the field of counterweight detection technology, and more specifically, to a three-point forklift counterweight detection fixture. Background Technology

[0002] Counterweights are indispensable key components in forklifts and other construction machinery. Typically manufactured through casting, their primary function is to provide a stable center of gravity offset, ensuring the safety and stability of the forklift during loading and unloading of heavy loads. In the construction machinery industry, the matching accuracy between the forklift counterweight and the chassis / tailstock directly affects the overall safety and operational performance of the vehicle. Currently, counterweight testing technologies mainly include manual measurement and the use of simple testing fixtures or jigs. These methods involve preliminary matching and verification with the chassis / tailstock mounting surfaces through visual inspection, dimensional measurement, or using universal templates. In addition, some advanced testing fixtures employ standardized jigs or templates, combined with machining equipment or computer-aided measurement systems, to simulate the main mounting surfaces of the chassis to verify the dimensional and geometric accuracy of the counterweight. These technologies are widely used in forklift production, providing fundamental support for the assembly of the counterweight and chassis.

[0003] However, due to the casting characteristics of counterweights and the susceptibility to deformation, thermal expansion and contraction, and other errors in areas with small or confined installation planes, existing testing technologies often fall short of the precision and efficiency required for high-precision assembly. This results in time-consuming traditional manual measurement and simple tooling inspection processes, reliance on extensive manual adjustments, low hoisting efficiency, and a lack of standardized welding processes, which can easily lead to installation errors. Consequently, labor costs and the complexity of vehicle assembly are increased. Therefore, there is an urgent need for a specially designed testing fixture that can improve the accuracy and hoisting efficiency of counterweight testing, standardize production welding processes, thereby reducing labor costs and enhancing the reliability and economy of vehicle assembly. Utility Model Content

[0004] To overcome the aforementioned shortcomings of existing technologies, this utility model provides a three-point forklift counterweight testing fixture, including a base platform, left and right baffles, a triangular support plate, a rear positioning plate, and a locking limit plate. The three-point support structure precisely positions the counterweight, and the gap adjustment shims control the assembly gap. This fixture solves the problems of insufficient testing accuracy, low efficiency, and non-standard welding processes in existing technologies, achieving high-precision matching between the counterweight and the chassis tailstock, improving assembly efficiency, reducing manual adjustment costs, and ensuring overall vehicle safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A three-point forklift counterweight testing fixture includes a right baffle (1), a triangular plate (2), a right reinforcing rib assembly (3), a rear pad (4), a rear reinforcing rib assembly (5), a base platform (6), a left reinforcing rib assembly (7), a left baffle (8), and left and right baffle reinforcing rib assemblies (9); wherein the right baffle (1) is connected to the triangular plate (2), the triangular plate (2) is connected to the right reinforcing rib assembly (3), and the right reinforcing rib assembly (3) is connected to the base platform (6). The base platform (6) is connected to the left reinforcing rib assembly (7), the left reinforcing rib assembly (7) is connected to the triangular plate (2), the base platform (6) is connected to the rear pad plate (4), the rear pad plate (4) is connected to the rear reinforcing rib assembly (5), the base platform (6) is connected to the left baffle (8), the left baffle (8) is connected to the left and right baffle reinforcing rib assembly (9), and the left and right baffle reinforcing rib assembly (9) is connected to the right baffle (1).

[0007] As a further embodiment of this utility model, the right baffle (1) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the right baffle (1) is used to detect the gap between the right side of the counterweight and the right side of the frame.

[0008] As a further embodiment of this utility model, the triangular plate (2) is connected to the base platform (6) through the right reinforcing rib assembly (3) and the left reinforcing rib assembly (7). The triangular plate (2) serves as the mounting point for the counterweight and is used to position the front and rear height of the counterweight.

[0009] As a further embodiment of this utility model, the counterweight detection fixture also includes a washer, which is the contact surface between the counterweight and the tailstock, and cooperates with the triangular plate (2) to limit the gap between the counterweight and the tailstock.

[0010] As a further embodiment of this utility model, the rear pad (4) is connected to the base platform (6) through the rear reinforcing rib assembly (5), and the rear pad (4) is used to position the locking mounting plane of the counterweight.

[0011] As a further embodiment of this utility model, the counterweight detection fixture also includes a locking plate limiting plate, which serves as a limiting plate for the tailstock locking plate and cooperates with the rear pad (4) to limit the positioning of the tailstock locking plate.

[0012] As a further embodiment of this utility model, the left baffle (8) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the left baffle (8) is used to detect the gap between the left side of the counterweight and the left side of the frame.

[0013] As a further embodiment of this utility model, the base platform (6) serves as the reference surface of the tooling. The base platform (6) is connected to the right reinforcing rib assembly (3), the left reinforcing rib assembly (7), and the rear reinforcing rib assembly (5) to support and stabilize the triangular plate (2) and the rear pad plate (4).

[0014] As a further embodiment of this utility model, the left and right baffle reinforcing rib assembly (9) connects the right baffle (1) and the left baffle (8) to enhance the structural stability of the right baffle (1) and the left baffle (8).

[0015] As a further embodiment of this utility model, when using the counterweight detection fixture, ensure that the contact surfaces of the right baffle (1), left baffle (8) and locking plate limiting plate are in close contact with the plane related to the counterweight, and that there is no excessive gap. The contact surfaces do not include the right reinforcing rib assembly (3), left reinforcing rib assembly (7), rear reinforcing rib assembly (5) and left and right baffle reinforcing rib assembly (9).

[0016] Compared with the prior art, the beneficial effects of this utility model's three-point forklift counterweight testing fixture are as follows:

[0017] This utility model's three-point forklift counterweight testing fixture utilizes a three-point positioning structure consisting of a base platform, left and right baffles, and a triangular support plate. Combined with the precise guiding design of the rear positioning plate and locking limit plate, it significantly improves the assembly accuracy of the counterweight, effectively controlling the matching gap between the counterweight and the chassis tailstock. Existing general-purpose fixtures or simple templates often struggle to handle deformation and thermal expansion / contraction during counterweight casting, resulting in insufficient testing accuracy and requiring extensive manual adjustments and corrections. Furthermore, this utility model is manufactured using standard carbon steel profiles, making the material readily available and inexpensive. The fixture's rational design and easy installation enhance the efficiency and speed of the testing process, significantly improving efficiency compared to the inefficient manual measurement methods of existing technologies. More importantly, this utility model standardizes the counterweight casting process through standardized design, effectively solving the problem of inconsistent welding processes caused by the lack of standardized procedures in existing technologies. This improves the efficiency and accuracy of the entire vehicle assembly, reduces manual adjustment costs to some extent, and enhances the overall vehicle safety and operational reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the components of a three-point forklift counterweight testing fixture according to the present invention. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0020] A three-point forklift counterweight testing fixture includes a right baffle (1), a triangular plate (2), a right reinforcing rib assembly (3), a rear pad (4), a rear reinforcing rib assembly (5), a base platform (6), a left reinforcing rib assembly (7), a left baffle (8), and left and right baffle reinforcing rib assemblies (9); wherein the right baffle (1) is connected to the triangular plate (2), the triangular plate (2) is connected to the right reinforcing rib assembly (3), and the right reinforcing rib assembly (3) is connected to the base platform (6). The base platform (6) is connected to the left reinforcing rib assembly (7), the left reinforcing rib assembly (7) is connected to the triangular plate (2), the base platform (6) is connected to the rear pad plate (4), the rear pad plate (4) is connected to the rear reinforcing rib assembly (5), the base platform (6) is connected to the left baffle (8), the left baffle (8) is connected to the left and right baffle reinforcing rib assembly (9), and the left and right baffle reinforcing rib assembly (9) is connected to the right baffle (1).

[0021] In this embodiment of the present invention, the right baffle (1) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the right baffle (1) is used to detect the gap between the right side of the counterweight and the right side of the frame.

[0022] In this embodiment of the present invention, the triangular plate (2) is connected to the base platform (6) through the right reinforcing rib assembly (3) and the left reinforcing rib assembly (7). The triangular plate (2) serves as the mounting point for the counterweight and is used to position the front and rear height of the counterweight.

[0023] The counterweight detection fixture in this embodiment of the present invention also includes a washer, which is the contact surface between the counterweight and the tailstock, and cooperates with the triangular plate (2) to limit the gap between the counterweight and the tailstock.

[0024] In this embodiment of the present invention, the rear pad (4) is connected to the base platform (6) through the rear reinforcing rib assembly (5), and the rear pad (4) is used to position the locking mounting plane of the counterweight.

[0025] The counterweight detection fixture in this embodiment of the present invention also includes a locking plate limiting plate, which serves as a limiting plate for the tailstock locking plate and cooperates with the rear pad (4) to limit the positioning of the tailstock locking plate.

[0026] In this embodiment of the present invention, the left baffle (8) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the left baffle (8) is used to detect the gap between the left side of the counterweight and the left side of the frame.

[0027] In this embodiment of the utility model, the base platform (6) serves as the reference surface of the tooling. The base platform (6) is connected to the right reinforcing rib assembly (3), the left reinforcing rib assembly (7), and the rear reinforcing rib assembly (5) to support and stabilize the triangular plate (2) and the rear pad plate (4).

[0028] In this embodiment of the present invention, the left and right baffle reinforcing rib assembly (9) connects the right baffle (1) and the left baffle (8) to enhance the structural stability of the right baffle (1) and the left baffle (8).

[0029] When using the three-point forklift counterweight detection fixture in this utility model embodiment, it is necessary to ensure that the contact surfaces of the right baffle (1), left baffle (8) and locking plate limiting plate (11) are in close contact with the plane related to the counterweight, and excessive gaps are not allowed. The contact surfaces do not include the right reinforcing rib assembly (3), left reinforcing rib assembly (7), rear reinforcing rib assembly (5) and left and right baffle reinforcing rib assembly (9). Example 2

[0030] This utility model discloses a three-point forklift counterweight testing fixture for testing the matching accuracy between the counterweight and the rear frame of a 3-ton internal combustion forklift, ensuring the stability and safety of the entire vehicle assembly. The testing fixture is made of carbon steel, and its components include a base platform, left and right baffles, a triangular support plate, a rear positioning plate, left and right support reinforcing ribs, a rear support reinforcing rib, left and right baffle connectors, gap adjustment shims, and locking limit plates. The base platform measures 1200mm × 800mm × 50mm and is placed on a horizontal surface, serving as a reference plane fixed to the workshop testing table. The left and right baffles are located on both sides of the base platform, with a height of 600mm and a width of 100mm. They are securely welded to the base platform using two 20mm diameter left and right baffle connectors (150mm long), ensuring that the baffles are perpendicular to the platform and spaced 900mm apart, matching the width of the counterweight. A triangular support plate, 400mm long and 300mm high, is placed on the base platform. Its inclined surface contacts the bottom of the counterweight. It is welded and fixed to the base platform by left and right supporting reinforcing ribs (two on each side, 50mm x 10mm cross-section). The supporting reinforcing ribs are arranged at a 45° angle to withstand the vertical load of approximately 1.5 tons of counterweight. A rear positioning plate, 500mm x 200mm x 20mm in size, is located behind the base platform and is connected to the base platform by rear supporting reinforcing ribs (60mm x 12mm cross-section, 300mm long). It is used to position the locking mounting surface of the counterweight. A 0.5mm thick rubber shim is placed on the contact surface between the triangular support plate and the counterweight to limit the gap between the counterweight and the tailstock to within 0.5mm. A steel locking limit plate, 100mm x 80mm x 15mm in size, is fastened to the rear positioning plate and fixed to the base platform by bolts, ensuring that the positioning deviation of the tailstock locking plate is controlled within ±0.2mm.

[0031] During use, the base platform is first placed on a level testing table to adjust for level errors. Then, a 3-ton counterweight is slowly placed onto the triangular support plate using a crane. The bottom of the counterweight contacts the triangular support plate, the left and right sides align with the left and right baffles, and the rear locking surface aligns with the rear positioning plate. The operator observes the gap between the left and right baffles and the sides of the counterweight; the gap is less than 0.2mm, meeting design requirements. Gap adjustment shims ensure a stable gap between the counterweight and the tailstock contact surface, and locking limit plates restrict the movement of the tailstock locking plate to ensure locking accuracy. After testing, it is confirmed that the counterweight dimensions perfectly match the frame and tailstock, with no excessive gaps or deformation. Standardized design has regulated the welding process, reducing manual adjustment costs. The tooling structure design in this embodiment is reasonable, the material selection conforms to industrial standards, and it is suitable for actual production environments, ensuring the assembly accuracy of the forklift counterweight and the overall vehicle safety.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-point forklift counterweight testing fixture, characterized in that, It includes a right baffle (1), a triangular plate (2), a right reinforcing rib assembly (3), a rear pad (4), a rear reinforcing rib assembly (5), a base platform (6), a left reinforcing rib assembly (7), a left baffle (8), and left and right baffle reinforcing rib assemblies (9); wherein, the right baffle (1) is connected to the triangular plate (2), the triangular plate (2) is connected to the right reinforcing rib assembly (3), the right reinforcing rib assembly (3) is connected to the base platform (6), and the base platform... (6) Connected to the left reinforcing rib assembly (7), the left reinforcing rib assembly (7) is connected to the triangular plate (2), the base platform (6) is connected to the rear pad (4), the rear pad (4) is connected to the rear reinforcing rib assembly (5), the base platform (6) is connected to the left baffle (8), the left baffle (8) is connected to the left and right baffle reinforcing rib assembly (9), and the left and right baffle reinforcing rib assembly (9) is connected to the right baffle (1).

2. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The right baffle (1) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the right baffle (1) is used to detect the gap between the right side of the counterweight and the right side of the frame.

3. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The triangular plate (2) is connected to the base platform (6) through the right reinforcing rib assembly (3) and the left reinforcing rib assembly (7). The triangular plate (2) serves as the load point for the counterweight installation and is used to position the front and rear height of the counterweight.

4. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The counterweight detection fixture also includes washers, which are the contact surfaces between the counterweight and the tailstock, and cooperate with the triangular plate (2) to limit the gap between the counterweight and the tailstock.

5. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The rear pad (4) is connected to the base platform (6) through the rear reinforcing rib assembly (5), and the rear pad (4) is used to position the locking mounting plane of the counterweight.

6. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The counterweight detection fixture also includes a locking plate limiting plate, which serves as a limiting plate for the tailstock locking plate and cooperates with the rear pad (4) to limit the positioning of the tailstock locking plate.

7. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The left baffle (8) is connected to the base platform (6) through the left and right baffle reinforcing rib assembly (9), and the left baffle (8) is used to detect the gap between the left side of the counterweight and the left side of the frame.

8. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The base platform (6) serves as the reference surface of the tooling. The base platform (6) is connected to the right reinforcing rib assembly (3), the left reinforcing rib assembly (7), and the rear reinforcing rib assembly (5) to support and stabilize the triangular plate (2) and the rear pad plate (4).

9. The three-point forklift counterweight testing fixture according to claim 1, characterized in that, The left and right baffle reinforcing rib assembly (9) connects the right baffle (1) and the left baffle (8) and is used to enhance the structural stability of the right baffle (1) and the left baffle (8).

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