Forklift counterweight device capable of adjusting load center distance

Abstract

The invention discloses a forklift counterweight device capable of adjusting the load center distance, and belongs to the technical field of forklift counterweights, the forklift counterweight device comprises a main body frame arranged on a forklift, a counterweight block arranged in the main body frame, and a telescopic mechanism connected between the main body frame and the counterweight block; the balancing weight is driven by the telescopic mechanism to slide along the sliding rail, the load center distance of the forklift can be flexibly adjusted in cooperation with limiting and fixing of the limiting assembly, the problem that the gravity center seriously deviates backwards after the tail of the forklift is modified is effectively solved, the original balance state of the whole forklift is recovered and guaranteed, potential safety hazards such as tipping are reduced, operation safety is improved, and the service life of the forklift is prolonged. Meanwhile, the load center distance can be dynamically adjusted according to the working state of the tail working mechanism, the working performance of the tail working mechanism is fully released, the working performance is prevented from being limited, and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of forklift counterweight technology, and particularly relates to an adjustable load center distance forklift counterweight device. Background Technology

[0002] Counterbalance forklifts are widely used material handling equipment in warehousing, logistics, and factories. In their unloaded state, the load center is located between 50% and 55% of the wheelbase, with the overall weight distribution slightly rearward. The original counterweight at the rear serves as a core stabilizing component, primarily increasing the tipping moment and ensuring overall operational stability. As operational needs diversify, some users modify the rear of counterbalance forklifts to expand their applicable scenarios.

[0003] In existing technologies, there are cases where the original counterweight, which only serves to increase the overturning moment, is replaced by a working mechanism with a special function. In this case, when the working mechanism is working, it causes the center of gravity of the entire vehicle to shift significantly backward. This not only greatly limits the working performance of the rear working device and prevents it from fully utilizing its special function, but also seriously disrupts the original balance of the entire vehicle, resulting in a significant decrease in the stability of the entire vehicle and making it prone to overturning and other safety hazards, affecting operational safety and efficiency. Therefore, there is an urgent need for a forklift counterweight device with an adjustable load center distance. Summary of the Invention

[0004] To address some or all of the technical problems existing in the prior art, the present invention provides an adjustable load center distance forklift counterweight device, comprising a main frame of the forklift, a counterweight block disposed within the main frame, and a telescopic mechanism connecting the main frame and the counterweight block, wherein: The main frame is arranged along the length of the forklift. The bottom of both sides of the main frame is symmetrically provided with first slide rails. The bottom of both sides of the counterweight is provided with first slide grooves that match the first slide rails. The first slide grooves are slidably connected to the first slide rails. Multiple limiting components that match the bottom of the counterweight are evenly spaced along the length of the inner side of the first slide rails. The limiting components on the inner sides of the two first slide rails are arranged corresponding to each other. A support plate is provided in the middle of one side of the main frame, and a support plate extends downward from the support plate. One end of the telescopic mechanism is connected to the inner side of the support plate, and the other end is connected to one side of the counterweight. The telescopic mechanism is horizontally arranged along the length direction. A first extension frame is horizontally arranged on the outer side of the support plate along the width direction. A second extension frame is correspondingly arranged on the main frame below the first extension frame. The first extension frame is parallel to the second extension frame.

[0005] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, second slide rails are symmetrically arranged on the top of both sides of the main frame, and second slide grooves matching the second slide rails are arranged on the top of both sides of the counterweight block.

[0006] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the bottom of the first extension frame is provided with a first slot, and the top of the second extension frame is provided with a second slot.

[0007] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, reinforcing ribs are provided between the support plate and the support plate.

[0008] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the telescopic mechanism adopts a scissor telescopic mechanism.

[0009] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the limiting component is a mechanical spring-type one-way limiting block, and the top of the mechanical spring-type one-way limiting block is higher than the top of the first slide rail.

[0010] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the number of limiting components on one side of the first slide rail is 2 to 4.

[0011] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the telescopic mechanism is connected to the hydraulic system installed on the forklift.

[0012] Furthermore, in the aforementioned adjustable load center distance forklift counterweight device, the telescopic mechanism is connected to the electrical system installed on the forklift.

[0013] The adjustable load center distance forklift counterweight device of the present invention has the following advantages and positive effects: This invention uses a telescopic mechanism to drive the counterweight block to slide along the slide rail, and with the limiting component for fixing, it can flexibly adjust the load center distance of the forklift. This effectively solves the problem of severe rearward shift of the center of gravity after the forklift's rear end is modified, restoring and ensuring the original balance of the entire vehicle, reducing safety hazards such as tipping over, and improving operational safety. At the same time, the load center distance can be dynamically adjusted according to the working status of the rear working mechanism, fully releasing the working performance of the rear working mechanism, avoiding its working performance being limited, and improving work efficiency. Furthermore, the linear distribution distance of the mechanical spring-type unidirectional limiting block can be customized according to user needs, meeting the personalized needs of different users for the load center distance adjustment range, adapting to different operating scenarios and modification schemes, and improving the versatility and adaptability of the device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the adjustable load center distance forklift counterweight device of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Main frame; 2. Counterweight; 3. First slide rail; 4. Telescopic mechanism; 5. Limiting component; 6. First extension frame; 7. Second extension frame; 8. Support plate; 9. Support plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0017] This invention provides a forklift counterweight device with adjustable load center distance, such as... Figure 1 As shown, it includes a main frame 1 installed on the forklift, a counterweight 2 installed within the main frame 1, and a telescopic mechanism 4 connecting the main frame 1 and the counterweight 2, wherein: The main frame 1 is set along the length of the forklift. The bottom of both sides of the main frame 1 is symmetrically provided with first slide rails 3. The bottom of both sides of the counterweight 2 is provided with first slide grooves that match the first slide rails 3. The first slide grooves are slidably connected to the first slide rails 3. Through the cooperation of the slide rails and slide grooves, the counterweight 2 can slide smoothly along the length of the main frame 1, providing basic guidance for the adjustment of the load center distance. The inner side of the first slide rail 3 is evenly spaced along the length direction with multiple limiting components 5 that match the bottom of the counterweight 2. The limiting components 5 on the inner side of the two first slide rails 3 are correspondingly set to limit and fix the counterweight 2 after sliding, preventing the counterweight 2 from sliding accidentally during operation and ensuring the stability after adjustment. A support plate 9 is provided in the middle of one side of the main frame 1. A support plate 8 extends downward from the support plate 9. One end of the telescopic mechanism 4 is connected to the inner side of the support plate 8, and the other end is connected to one side of the counterweight 2. The telescopic mechanism 4 is set horizontally along the length direction and is used to drive the counterweight 2 to move smoothly along the slide rail direction to realize the adjustment of the load center distance. A first extension frame 6 is set horizontally along the width direction on the outer side of the support plate 9. A second extension frame 7 is set on the main frame 1 below the first extension frame 6. The first extension frame 6 is parallel to the second extension frame 7. The extension frame is used to expand the functional adaptability of the device and can be used to install various auxiliary operating parts to further improve the operating flexibility of the forklift.

[0018] As a specific implementation, in the adjustable load center distance forklift counterweight device of the present invention, the top of both sides of the main frame 1 is symmetrically provided with second slide rails, and the top of both sides of the counterweight 2 is provided with second slide grooves matching the second slide rails. This arrangement further improves the stability of the counterweight 2 during the sliding process, avoids tilting or shaking of the counterweight 2 during the sliding process, and ensures the smoothness and stability of the adjustment process.

[0019] As a specific embodiment, in the adjustable load center distance forklift counterweight device of the present invention, the bottom of the first extension frame 6 is provided with a first slot and the top of the second extension frame 7 is provided with a second slot. The slot structure is used to realize the quick positioning and installation of auxiliary components, facilitate the disassembly and replacement of auxiliary components, and improve the ease of use of the extension frame.

[0020] As a specific embodiment, in the adjustable load center distance forklift counterweight device of the present invention, a reinforcing rib is provided between the support plate 9 and the support plate 8. The reinforcing rib is used to enhance the connection strength and structural rigidity of the support plate 9 and the support plate 8, withstand the driving force and reaction force generated when the telescopic mechanism 4 is working, prevent the support plate 9 and the support plate 8 from deforming or breaking, and extend the service life of the device.

[0021] As a specific implementation, in the adjustable load center distance forklift counterweight device of the present invention, the telescopic mechanism 4 adopts a scissor telescopic mechanism 4. The scissor telescopic mechanism 4 has the advantages of stable telescopic stroke, strong load-bearing capacity and compact structure, and can smoothly drive the counterweight block 2 to move, ensuring the normal operation of the telescopic mechanism 4.

[0022] In one specific embodiment, in the adjustable load center distance forklift counterweight device of the present invention, the limiting component 5 is a mechanical spring-type one-way limiting block. The top of the mechanical spring-type one-way limiting block is higher than the top of the first slide rail 3. The one-way limiting function can prevent the counterweight block 2 from sliding in the opposite direction during operation, ensuring the stability of the limiting. The top of the mechanical spring-type one-way limiting block is higher than the top of the first slide rail 3. In one specific embodiment, in the adjustable load center distance forklift counterweight device of the present invention, the number of upper limit components 5 on one side of the first slide rail 3 is 2 to 4. More specifically, the number of upper limit components 5 on one side of the first slide rail 3 is 3, and the brackets of the three limit components 5 are spaced at a specified distance. By sliding the counterweight block 2 to different limit components 5, the load center distance requirements of different working conditions can be met.

[0023] As a specific implementation, in the adjustable load center distance forklift counterweight device of the present invention, the telescopic mechanism 4 is connected to the hydraulic system installed on the forklift. The forklift's own hydraulic system can provide power to the telescopic mechanism 4, eliminating the need for an additional independent power unit, simplifying the device structure, reducing the device manufacturing cost, and at the same time, the hydraulic drive has the advantages of stable power and high adjustment accuracy, which facilitates the precise adjustment of the position of the counterweight 2.

[0024] As one specific implementation, in the adjustable load center distance forklift counterweight device of the present invention, the telescopic mechanism 4 is connected to the electrical system installed on the forklift. The electrical drive mode can be selected according to the operation requirements. The electrical drive has the characteristics of convenient operation and rapid response, adapting to the power requirements under different operation scenarios and improving the adaptability of the device.

[0025] The working principle of the adjustable load center distance forklift counterweight of the present invention is as follows: When the rear of the forklift is modified, the operation of the rear working mechanism causes the center of gravity of the whole vehicle to shift backward, or when the load center distance needs to be adjusted according to the operation requirements, the hydraulic system or electrical system of the forklift is started, and power is provided to the scissor telescopic mechanism 4 through the corresponding pipelines or lines. The telescopic mechanism 4 begins to extend and retract under the power drive, thereby driving the counterweight 2 to slide smoothly along the first slide rail 3 and the second slide rail. When the counterweight 2 slides to the designated position that enables the vehicle to reach a balanced state, the mechanical spring-type one-way limiting block pops out under the action of the spring force and engages with the bottom of the counterweight 2 to limit and fix the counterweight 2, preventing it from sliding accidentally and completing the adjustment of the load center distance. When it is necessary to adjust the load center distance to other positions, the telescopic mechanism 4 outputs a reverse driving force to overcome the spring force of the mechanical spring-type one-way limit block, causing the limit block to disengage from the counterweight block 2 and release the limit. Then the telescopic mechanism 4 continues to extend and retract, driving the counterweight block 2 to move to a new designated position. The limit block pops out again to achieve limit fixation, thereby realizing flexible and precise adjustment of the load center distance.

[0026] In summary, compared with the prior art, the adjustable load center distance forklift counterweight device of the present invention has the following advantages and positive effects: This invention drives the counterweight block 2 to slide along the slide rail via the telescopic mechanism 4, and with the limiting component 5 for limiting and fixing, the load center distance of the forklift can be flexibly adjusted. This effectively solves the problem of severe rearward shift of the center of gravity after the forklift's rear end is modified, restoring and ensuring the original balance of the entire vehicle, reducing safety hazards such as tipping over, and improving operational safety. At the same time, the load center distance can be dynamically adjusted according to the working status of the rear working mechanism, fully releasing the working performance of the rear working mechanism, avoiding its working performance being limited, and improving work efficiency. Furthermore, the linear distribution distance of the mechanical spring-type unidirectional limiting block can be customized according to user needs, which can meet the personalized needs of different users for the load center distance adjustment range, adapt to different working scenarios and modification schemes, and improve the versatility and adaptability of the device.

[0027] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used 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. Meanwhile, 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. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A forklift counterweight device with adjustable load center distance, characterized in that, The forklift includes a main frame, a counterweight within the main frame, and a telescopic mechanism connecting the main frame and the counterweight, wherein: The main frame is arranged along the length of the forklift. The bottom of both sides of the main frame is symmetrically provided with first slide rails. The bottom of both sides of the counterweight is provided with first slide grooves that match the first slide rails. The first slide grooves are slidably connected to the first slide rails. Multiple limiting components that match the bottom of the counterweight are evenly spaced along the length of the inner side of the first slide rails. The limiting components on the inner sides of the two first slide rails are arranged corresponding to each other. A support plate is provided in the middle of one side of the main frame, and a support plate extends downward from the support plate. One end of the telescopic mechanism is connected to the inner side of the support plate, and the other end is connected to one side of the counterweight. The telescopic mechanism is horizontally arranged along the length direction. A first extension frame is horizontally arranged on the outer side of the support plate along the width direction. A second extension frame is correspondingly arranged on the main frame below the first extension frame. The first extension frame is parallel to the second extension frame.

2. The adjustable load center distance forklift counterweight device according to claim 1, characterized in that, The main frame is symmetrically provided with second slide rails on both sides of the top, and the counterweight is provided with second slide grooves on both sides of the top that match the second slide rails.

3. The adjustable load center distance forklift counterweight device according to claim 1, characterized in that, The first expansion bracket has a first slot at the bottom and the second expansion bracket has a second slot at the top.

4. The adjustable load center distance forklift counterweight device according to claim 1, characterized in that, A reinforcing rib is provided between the support plate and the support plate.

5. The adjustable load center distance forklift counterweight device according to claim 1, characterized in that, The telescopic mechanism is a scissor-type telescopic mechanism.

6. The forklift counterweight device with adjustable load center distance according to claim 1, characterized in that, The limiting component is a mechanical spring-type one-way limiting block, and the top of the mechanical spring-type one-way limiting block is higher than the top of the first slide rail.

7. The adjustable load center distance forklift counterweight device according to claim 1, characterized in that, The number of limiting components on the first slide rail on one side is 2 to 4.

8. The forklift counterweight device with adjustable load center distance according to claim 1, characterized in that, The telescopic mechanism is connected to the hydraulic system mounted on the forklift.

9. The adjustable load center distance for forklift counterweight device according to claim 1, characterized in that, The telescopic mechanism is connected to the electrical system installed on the forklift.

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