Rack type portal frame forward moving structure for forklift
By using a rack and pinion mast forward-moving structure and a design that allows the drive wheels and gears to rotate synchronously, the problem of unstable center of gravity during mast movement is solved, enabling forklifts to transport goods efficiently, stably, and flexibly.
Patent Information
- Application Number
- CN202520353274.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Existing forklift masts are prone to causing instability in the center of gravity of the forks when moving back and forth, requiring high load capacity and affecting operational flexibility and safety.
A rack and pinion gantry forward movement structure is designed. The gantry is moved by a drive wheel, and the load-bearing plate and the gears in the rack belt rotate synchronously to achieve stable forward and backward displacement of the gantry, eliminating the need for additional power components and reducing power consumption.
It improves the flexibility and safety of cargo transfer, reduces structural complexity and power consumption, and ensures the stability and efficiency of the gantry during forward and backward movement.
Smart Images
Figure CN223752370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a fork truck portal technical field, concretely is a rack formula portal front moving structure for fork truck. BACKGROUND
[0002] As the indispensable handling equipment in the logistics industry, the performance improvement of the fork truck has been the focus of the industry. The traditional fork truck portal structure is fixed in position, and the whole fork truck needs to be moved when operating the goods, which not only limits the operation flexibility of the fork truck, but also increases the demand for operating space. In order to adapt to the working conditions of narrow lane and high lifting, the portal front moving fork truck emerges as the times require. As one of the important forms, the rack formula portal front moving structure changes the position of the portal structure, adjusts the center of gravity of the fork truck load part, realizes the front moving of the portal, and greatly improves the operation flexibility and space utilization rate of the fork truck.
[0003] In the prior art, since the portal is installed on the upper part of the fork, when the portal moves forward and backward, the center of gravity of the fork will change, which is easy to cause the instability of the overall structure, and the load force requirement of the fork is high. SUMMARY
[0004] (I) The technical problem solved: In view of the shortcomings of the prior art, the utility model provides a rack formula portal front moving structure for fork truck, which has the advantages of keeping the structure stable while the portal moves, and solves the problem that the forward and backward movement of the portal in the prior art requires high load force of the fork.
[0005] (II) Technical scheme: In order to achieve the above-mentioned purpose of keeping the structure stable while the portal moves, the utility model provides the following technical scheme: a rack formula portal front moving structure for fork truck, the overall structure is connected with the bottom of the fork truck, including a portal and a rack belt, a drive wheel is arranged below the portal, the drive wheel is connected to a drive system, when the drive wheel moves, it drives the portal to move together; a load bearing plate is connected to the lower end of the portal, a protruding structure is formed on the lower surface of the load bearing plate, the load bearing plate is connected with the rack belt through the protruding structure, a gear is arranged inside the rack belt, the lower surface of the rack belt does not contact the ground, when the rack belt moves, the gear inside it rotates synchronously around the shaft.
[0006] Preferably, a rotating shaft is arranged at the center of the gear inside the rack belt, and the rotating shaft is fixedly connected with the fork truck near one end of the portal.
[0007] Preferably, a baffle is arranged at the front and rear ends of the rack belt, and the baffle is higher than the protruding structure.
[0008] Preferably, the convex structure is a tooth structure, the tooth pitch matches the rack belt, and the rack belt and the load-bearing plate are connected in meshing connection through the tooth structure.
[0009] Preferably, the number of load-bearing plates is two, and the load-bearing plates are symmetrically distributed on the left and right sides of the portal frame and are fixedly connected to the portal frame through welding or screws.
[0010] Preferably, the number of drive wheels is not less than two, and the drive wheels are distributed on the left and right sides of the portal frame.
[0011] Preferably, the portal frame is provided with a fork, and the fork has a lifting degree of freedom in the vertical direction on the portal frame.
[0012] Preferably, the driving system is a rotary motor, and the driving system is installed at the lower end of the portal frame.
[0013] (Three) beneficial effects: compared with the prior art, the utility model provides a rack type portal frame forward moving structure for a forklift, which has the following beneficial effects:
[0014] 1. The rack type portal frame forward moving structure for a forklift, which is provided with a drive wheel below the portal frame, drives the portal frame to move in the front-back direction, compared with the traditional technology which must rely on the movement of the entire forklift to adjust the position of the portal frame, this innovative design allows the portal frame to independently move in the front-back direction in a small range, greatly improving the flexibility and efficiency of cargo transfer.
[0015] 2. The rack type portal frame forward moving structure for a forklift, which is provided with a load-bearing plate connected to the lower end of the portal frame and connected to a rack belt through the load-bearing plate, a plurality of gears capable of rotating along the shaft are installed in the rack belt, and the lower surface of the rack belt is not in contact with the ground, so when the portal frame moves in the front-back direction, part of the gravity is transmitted to the gears in the rack belt through the load-bearing plate, and the gears rotate synchronously along the fixed shaft, while the rack belt itself remains in place, effectively transmitting the pressure generated by the portal frame to the fixed shaft, and then to the forklift as a whole, thereby ensuring the stability of the structure, which ingeniously avoids the possible overturning of the portal frame due to the change of the center of gravity during the front-back movement, greatly improving the safety and stability of the operation.
[0016] 3、The rack type mast front moving structure for the forklift, the convex structure is arranged on the lower surface of the bearing plate, and the outer surface of the rack belt is provided with the corresponding texture structure, so that the bearing plate can tightly fit and drive the rack belt to move synchronously, when the mast moves forward and backward as a whole, only the driving wheel is needed as a single power source, the bearing plate drives the rack belt to move together through the meshing part, so that the cooperation movement of the whole structure is realized, the additional power component is omitted, the complexity and power consumption of the whole structure are reduced, the efficient cooperation of the structure is realized, and the cost is effectively controlled. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a complete structure schematic view when the utility model structure is installed on the forklift.
[0018] Figure 2 It is a mast part structure schematic view of the utility model.
[0019] Figure 3 It is Figure 2 It is a partial enlarged structure schematic view of A part.
[0020] Figure 4 It is a rack belt part structure schematic view of the utility model.
[0021] In the figure: 1, mast; 11, driving wheel; 12, driving system; 2, rack belt; 21, gear; 22, rotating shaft; 23, baffle; 3, bearing plate; 31, convex structure; 4, pallet. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0023] Please refer to Figures 1-4The application discloses a rack type mast forward moving structure for a forklift, which is connected with the bottom of the forklift as a whole and comprises a mast and a rack belt, wherein the bottom of the mast is provided with a driving wheel connected to a driving system, in this embodiment, the driving system is a rotary motor, which is installed on the bottom of the mast and can drive the mast to realize linear movement in the front-back direction when the driving wheel moves; the lower end of the mast is fixedly connected with a bearing plate through screws or welding, the lower surface of the bearing plate is provided with a convex structure, the bearing plate is connected with the rack belt through the convex structure, the rack belt is internally provided with a plurality of gears, and the lower surface of the rack belt does not contact the ground, so that the gears internally rotate synchronously when the rack belt moves, and the cooperation between the gears and the rack belt is similar to that of a conveyor belt; compared with the traditional technology, the position of the mast can be adjusted by controlling the driving system in a small range, the mast can realize independent and accurate displacement in the front-back direction, and the flexibility and efficiency of goods transfer are greatly improved.
[0024] In this embodiment, please refer to Figure 1 and Figure 2 , the number of the driving wheels is not less than two, and the driving wheels are distributed on the left and right sides of the mast; the number of the bearing plates is also two, and the bearing plates are symmetrically distributed on the left and right sides of the mast; the center of the gears in the rack belt is provided with a rotating shaft, the rotating shaft is fixedly connected with the forklift near one end of the mast, the pressure applied by the mast is evenly distributed to the forklift, and the mast is prevented from tilting and overturning; the front and back ends of the rack belt are provided with baffles, the baffles are higher than the convex structure, the driving wheels are prevented from excessive displacement due to faults, and the mast is prevented from exceeding the range of the forklift or colliding with the forklift.
[0025] Please refer to Figure 3 and Figure 4 , the convex structure is a kind of tooth structure, the tooth pitch is consistent with the rack belt, the rack belt and the bearing plate are connected through the tooth structure, the bearing plate can closely adhere to and drive the rack belt to move synchronously, the mast only needs to rely on the driving wheel as a single power source when the mast as a whole moves forward and backward, the bearing plate efficiently drives the rack belt to move together, and the cooperation movement of the structure as a whole can be realized.
[0026] Please refer to Figure 1 , the mast is provided with a fork, the fork has lifting freedom in the vertical direction on the mast, and in the specific installation, the same hydraulic pushing as the prior art can be adopted, a hydraulic cylinder is installed on the mast, and lifting of the fork is realized.
[0027] In summary, the rack type mast forward moving structure for forklifts allows the mast 1 to independently move forward and backward in a small range, greatly improving the flexibility and efficiency of cargo transfer; when the mast 1 moves forward and backward under the action of the driving wheel 11, part of the gravity is transmitted to the gear 21 inside the rack strip 2 through the bearing plate 3, and the gear 21 rotates synchronously along the fixed shaft, effectively transmitting the pressure generated by the mast 1 to the fixed rotating shaft 22, and then to the forklift as a whole, thereby ensuring the stability of the structure, avoiding the mast 1 from falling due to the displacement of the center of gravity when moving forward and backward, and sharing the pressure borne by the driving wheel 11, so that the resistance of the driving wheel 11 is smaller and the energy consumption is less; the mast 1 and the rack strip 2 are efficiently driven together through the meshing part, which not only omits the additional power component, but also significantly reduces the complexity and power consumption of the overall structure, achieving efficient cooperation of the structure and effective control of the cost.
[0028] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.
[0029] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A rack-and-pinion mast forward-moving structure for a forklift, the structure being integrally connected to the bottom of the forklift, comprising a mast (1) and a rack belt (2), wherein a drive wheel (11) is disposed below the mast (1), the drive wheel (11) being connected to a drive system (12), and when the drive wheel (11) moves, it drives the mast (1) to move together, characterized in that: The lower end of the portal frame (1) is connected with a load-bearing plate (3), the lower surface of the load-bearing plate (3) is provided with a convex structure (31), the load-bearing plate (3) is connected with the rack strip (2) through the convex structure (31), the rack strip (2) is internally provided with a gear (21), the lower surface of the rack strip (2) does not contact the ground, when the rack strip (2) moves, the gear (21) internally rotates synchronously.
2. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The gear (21) inside the rack strip (2) is provided with a rotating shaft (22) at the center, the rotating shaft (22) is fixedly connected with a forklift near one end of the portal frame (1).
3. The rack and pinion mast forward movement structure for a fork truck of claim 1 wherein: The front and rear ends of the rack strip (2) are both provided with a baffle (23), the baffle (23) is higher than the convex structure (31).
4. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The convex structure (31) is a kind of tooth structure, the tooth pitch is consistent with the rack strip (2), the rack strip (2) and the load-bearing plate (3) are connected through the tooth structure.
5. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The number of the load-bearing plate (3) is two, which is symmetrically distributed on the left and right sides of the portal frame (1), the load-bearing plate (3) and the portal frame (1) are fixedly connected through welding or screws.
6. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The number of the driving wheel (11) is not less than two, which is distributed along the left and right sides of the portal frame (1).
7. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The portal frame (1) is provided with a fork (4), the fork (4) has a lifting degree in the vertical direction on the portal frame (1).
8. The rack and pinion mast forward movement structure for a fork truck of claim 1, wherein: The driving system (12) is a rotary motor, the driving system (12) is installed at the lower end of the portal frame (1).