Novel distance-adjusting side shifting fork for heavy lithium battery forklift

Abstract

The utility model relates to the technical field of forklifts, and provides a novel distance-adjusting side-shifting fork for a heavy lithium battery forklift, which realizes the distance-adjusting and side-shifting functions of a fork frame through the driving of a group of double-shaft stepping motors and a ball screw. The ball screw rod is connected with the double-shaft stepping motor through a connecting piece, the motor drives the ball screw rod to rotate, the ball screw nut is driven to move in the axial direction of the screw rod, and therefore the sliding frame is pushed to move laterally. And the ball screw nut is subjected to radial force generated by rotation of the ball screw rod, so that stable movement of the sliding frame is ensured. The bearings support the two ends of the ball screw, stable rotation of the ball screw is guaranteed, friction and abrasion are reduced, and the overall transmission efficiency and the system stability are improved. In addition, the limiting stoppers are arranged at the ends of the ball screw rod and the ball screw nut, the distance adjusting range and the lateral movement range of the fork frame are limited, and excessive lateral movement or collision is prevented. According to the utility model, the transmission mode of lateral movement and distance adjustment of the fork frame is simplified, the occupied space is reduced, and the operation safety and the maintenance convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forklift technical field more specifically, the utility model relates to a new type of distance adjustment side shift fork for heavy lithium battery forklift. BACKGROUND

[0002] As a kind of widely used in automated loading and unloading, stacking and handling efficient equipment, with its efficiency and flexibility in modern logistics and warehousing system plays an important role. To meet the needs of different operating environments, forklift is usually equipped with various accessories (such as distance adjustment side shift fork, clamp fork, etc.), to realize the multi-purpose of forklift. By changing different accessories, forklift can adapt to diversified loading and handling tasks, improve work efficiency, reduce labor intensity. Distance adjustment side shift fork is one of forklift accessories, which realizes the side shift and distance adjustment function of fork carriage, effectively improves the operating ability of forklift in narrow space, and is widely used in material handling, warehousing management and other fields.

[0003] However, the existing distance adjustment side shift fork technology still has some deficiencies, especially in the use and structure design of hydraulic system. The traditional distance adjustment side shift fork adopts hydraulic drive system, and realizes the side shift and distance adjustment function of fork carriage by connecting various components through oil pipe. Although the hydraulic system has high efficiency in transmission process, the pipeline design is complex, and multiple oil pipes need to be connected during use, which leads to complex pipeline layout of the whole system and large space occupation.

[0004] In addition, the arrangement of traditional hydraulic pipeline also seriously affects the operator's vision. When forklift is working, especially in relatively narrow working environment, the existence of hydraulic pipeline often blocks the driver's vision, increases the difficulty and risk of operation. When the operator adjusts the distance and side shift of fork carriage, he cannot clearly observe the surrounding environment, which may cause operation safety hazards, especially in high-density warehouse environment, the operation space of forklift is limited, and the limitation of vision increases the complexity and safety risk of forklift operation. INVENTION CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a new type of distance adjustment side shift fork for heavy lithium battery forklift, which adopts electric drive instead of traditional hydraulic drive system, and realizes the distance adjustment and side shift of fork carriage by single group double-shaft stepping motor driving ball screw rod. The technical feature solves the problems of complex pipeline of existing hydraulic system, large space occupation and limited operation vision. By using circuit instead of oil pipe, the pipeline structure is simplified, and the influence on operator's vision is reduced, so as to improve the operation safety and the use efficiency of forklift.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a new type of distance adjusting side shift fork for heavy lithium battery forklift, which comprises a fork frame, left and right forks and a distance adjusting side shift structure, wherein the distance adjusting side shift structure comprises a ball screw (1), the ball screw (1) is connected with a double-shaft stepping motor (2) through a connecting piece, the double-shaft stepping motor (2) drives the ball screw (1) to rotate, a ball screw nut (4) is arranged on the ball screw (1), the ball screw nut (4) is driven by the radial force generated by the rotation of the ball screw (1) to make the sliding frame side shift, thereby realizing the overall side shift function of the fork frame.

[0008] The distance adjusting side shift fork further comprises a bearing (5) for supporting the rotation of the ball screw (1), ensuring the stable operation of the ball screw (1), reducing friction and wear.

[0009] The distance adjusting side shift fork further comprises a limit stop (3) arranged at the end of the ball screw (1) and the ball screw nut (4) for limiting the distance of distance adjustment and side shift, preventing the fork frame from overtraveling or colliding.

[0010] As a further scheme of the utility model, the ball screw (1) is a non-standard part, has a thread matched with the ball screw nut (4), and the screw drives the ball screw nut (4) to move axially through thread transmission, thereby driving the sliding frame to realize the side shift function of the fork frame.

[0011] As a further scheme of the utility model, the double-shaft stepping motor (2) is connected with the ball screw (1) through its output shaft, when the motor drives the ball screw (1) to rotate, the ball screw nut (4) is driven by the radial force generated by the rotation of the screw rod to make the sliding frame side shift, thereby realizing the distance adjustment and side shift function of the fork frame.

[0012] As a further scheme of the utility model, the bearing (5) is installed at both ends of the ball screw (1) for supporting the rotation of the ball screw (1), reducing friction and wear, and ensuring the smooth rotation and stability of the ball screw (1).

[0013] As a further scheme of the utility model, the limit stop (3) is arranged at the stroke limit position of the end of the ball screw (1) and the ball screw nut (4) and connected with the sliding frame structure, for limiting the distance of distance adjustment and side shift, preventing excessive side shift or collision.

[0014] Compared with the prior art, the beneficial effects of the novel distance adjusting and side shifting fork for the heavy lithium battery forklift lie in that: the novel distance adjusting and side shifting fork for the heavy lithium battery forklift adopts the transmission mode of single group of ball screw and double-shaft stepping motor combination, simplifies the complex pipeline arrangement of the traditional hydraulic system, and makes the overall structure more compact. Since only one group of motor and screw rod assembly needs to be arranged, the installation space of the system is greatly reduced, and the matching difficulty between components is also reduced. In addition, the setting of the double-end bearing support and the limiter ensures the stable operation of the transmission system under heavy load working conditions, reduces mechanical wear and tear, and improves the service life of the equipment. Compared with the traditional multi-oil cylinder hydraulic system, the novel distance adjusting and side shifting fork for the heavy lithium battery forklift has the advantages of simple structure, convenient maintenance, significantly improved driver's field of view, and improved operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the original scheme of the distance adjusting and side shifting fork for the forklift.

[0016] Figure 2 It is a structural schematic view of the novel distance adjusting and side shifting fork for the heavy lithium battery forklift.

[0017] In the figure: 1, ball screw; 2, double-shaft stepping motor; 3, limiter; 4, ball screw nut; 5, bearing.

[0018] 1-ball screw DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Embodiment 1

[0021] A novel distance adjusting and side shifting fork for a heavy lithium battery forklift, comprising a fork frame, left and right forks, and a distance adjusting and side shifting structure, wherein the distance adjusting and side shifting structure comprises a ball screw 1, the ball screw 1 is connected with a double-shaft stepping motor 2 through a connecting piece, the double-shaft stepping motor 2 drives the ball screw 1 to rotate, a ball screw nut 4 is arranged on the ball screw 1, the ball screw nut 4 is driven by the radial force generated by the rotation of the ball screw 1 to drive the sliding frame to shift, thereby realizing the overall side shifting function of the fork frame;

[0022] The distance adjusting and side shifting fork further comprises a bearing 5, the bearing 5 supports the rotation of the ball screw 1, ensures the stable operation of the ball screw 1, and reduces friction and wear;

[0023] The adjustable lateral fork also includes a limiter 3, which is disposed at the end of the ball screw 1 and the ball screw nut 4 to limit the distance of adjustment and lateral movement, and to prevent the fork from overtravel or collide.

[0024] In this embodiment of the present invention, the ball screw 1 is a non-standard part with a thread that mates with the ball screw nut 4. The screw drives the ball screw nut 4 to move axially through the thread transmission, thereby driving the carriage to achieve the lateral movement function of the fork.

[0025] In this embodiment of the present invention, the dual-axis stepper motor 2 is connected to the ball screw 1 through its output shaft. When the motor drives the ball screw 1 to rotate, the ball screw nut 4 is subjected to the radial force generated by the rotation of the screw, which drives the slide to move laterally, so as to realize the adjustment and lateral movement functions of the fork.

[0026] In this embodiment of the invention, the bearing 5 is installed at both ends of the ball screw 1 to support the rotation of the ball screw 1, reduce friction and wear, and ensure the smooth rotation and stability of the ball screw 1.

[0027] In this embodiment of the present invention, the limiter 3 is located at the stroke limit position of the end of the ball screw 1 and the ball screw nut 4, and is connected to the carriage structure to limit the distance of adjustment and lateral movement, and to prevent excessive lateral movement or collision.

[0028] Example 2

[0029] Figure 1 The diagram illustrates the structure of the existing adjustable-pitch side-shift forklift solution, which includes one side-shift cylinder and two adjustable-pitch cylinders. The cylinder body of the side-shift cylinder is hinged to the rear fixed support, and the piston rod end is connected to the front slide that can drive the fork to move horizontally as a whole, thereby realizing left and right side-shifting. The two adjustable-pitch cylinders are installed side by side in a horizontal direction, and the piston rod ends are connected to the left and right forks respectively. The fork distance is changed by extending and retracting the cylinders. Since this solution relies on multiple cylinders and corresponding hydraulic lines, the lines may obstruct the operator's view, increasing the driving hazard.

[0030] The adjustable-pitch side-shifting fork in this embodiment includes a fork carriage, left and right forks, and an adjustable-pitch side-shifting structure. The adjustable-pitch side-shifting structure achieves the adjustment and side-shifting functions of the fork carriage through a ball screw 1. The ball screw 1 is connected to a dual-axis stepper motor 2 via a connector. The dual-axis stepper motor 2 drives the ball screw 1 to rotate, causing the ball screw nut 4 to move along the screw axis, thereby causing the carriage to move sideways and realizing the overall side-shifting function of the fork carriage.

[0031] In this embodiment of the invention, the adjustable-pitch lateral fork uses a set of motors and screws instead of a traditional hydraulic system, thereby simplifying the complex hydraulic piping of the original system. The ball screw 1, as a non-standard component, cooperates with the ball screw nut 4. The rotation of the screw drives the ball screw nut 4 to move axially via threaded transmission, thereby driving the carriage to adjust the fork's pitch and lateral movement.

[0032] To ensure the smooth operation of the ball screw 1 during use, this utility model also includes bearings 5, which are installed at both ends of the ball screw 1 to support the rotation of the ball screw 1, reduce friction and wear, and improve the stability and durability of the system.

[0033] The limit switch 3 is an important safety component in this invention, located at the travel limit position of the ends of the ball screw 1 and the ball screw nut 4. The limit switch 3 is connected to the carriage structure and can effectively limit the maximum range of lateral movement and adjustment of the fork carriage, preventing overtravel or collisions, and further ensuring the safety of the forklift under high-load working conditions.

[0034] The design of this utility model not only simplifies the pipeline layout and reduces the space occupied during fork adjustment and lateral movement, but also improves the operator's field of vision, avoiding the obstruction of vision caused by pipelines in traditional hydraulic systems, thereby effectively improving the operational safety of the forklift. At the same time, the introduction of the electric drive system reduces the frequency of hydraulic system failures, reduces system maintenance costs, and makes the overall vehicle performance more stable and reliable.

[0035] 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.

[0036] 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 new type of distance-adjustable side-shifting fork for heavy lithium battery forklifts, comprising a fork frame, left and right forks, and a distance-adjustable side-shifting structure, characterized in that, The distance adjusting side shifting structure comprises a ball screw rod (1), which is connected with a double-shaft stepping motor (2) through a connecting piece, the double-shaft stepping motor (2) drives the ball screw rod (1) to rotate, a ball screw nut (4) is arranged on the ball screw rod (1), the ball screw nut (4) is driven by the radial force generated by the rotation of the ball screw rod (1) to drive the carriage to shift, thereby realizing the overall side shifting function of the fork frame; The distance adjusting side shifting fork further comprises a bearing (5) for supporting the rotation of the ball screw rod (1) and ensuring the stable operation of the ball screw rod (1). The distance adjusting side shifting fork further comprises a limit stop (3) arranged at the end of the ball screw rod (1) and the ball screw nut (4) to limit the distance of distance adjustment and side shifting and prevent the fork frame from overtraveling or colliding.

2. The new type of distance-adjusting side-shifting fork for heavy lithium battery forklift according to claim 1, characterized in that, The ball screw rod (1) is a non-standard part with threads matched with the ball screw nut (4), the screw rod drives the ball screw nut (4) to move axially through thread transmission, thereby driving the carriage to realize the side shifting function of the fork frame.

3. The new type of distance-adjusting side-shifting fork for heavy lithium battery forklift according to claim 1, characterized in that, The double-shaft stepping motor (2) is connected with the ball screw rod (1) through its output shaft, when the motor drives the ball screw rod (1) to rotate, the ball screw nut (4) is driven by the radial force generated by the rotation of the screw rod to shift the carriage, thereby realizing the distance adjustment and side shifting functions of the fork frame.

4. The new type of distance-adjusting side-shifting fork for heavy lithium battery forklift according to claim 1, characterized in that, The bearing (5) is installed at both ends of the ball screw rod (1) to support the rotation of the ball screw rod (1), reduce friction and wear, and ensure the smooth rotation and stability of the ball screw rod (1).

5. The new type of distance-adjusting side-shifting fork for heavy lithium battery fork trucks according to claim 1, characterized in that, The limit stop (3) is arranged at the stroke limit position of the end of the ball screw rod (1) and the ball screw nut (4) and connected with the carriage structure to limit the distance of distance adjustment and side shifting and prevent excessive side shifting or collision.

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