Forklift, forklift front axle structure and assembly method thereof

Abstract

This invention belongs to the technical field of lifting equipment, specifically relating to equipment for lifting and transporting containers, and particularly to a forklift, a forklift front axle structure, and its assembly method. The differential gearbox of the forklift front axle structure uses a sealing strip and a clamping component to tighten the joint between the gearbox and the cover. When the clamping component is inserted into the insertion end of the sealing strip, it drives the spring on the spring-type retaining shaft. After the sealing strip is tightened by external force, the spring-type retaining shaft's rebound direction is switched by a steering mechanism, allowing it to continuously push the sealing strip. This utilizes the elastic rebound characteristics of the spring-type retaining shaft to compensate in real time for the sealing pressure attenuation caused by vibration during forklift operation, avoiding leakage problems caused by insufficient deformation compensation in traditional rigid seals, thus improving sealing reliability. The steering mechanism supports rapid switching of the spring-type retaining shaft's rebound direction, significantly shortening maintenance time and reducing operating costs.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically relating to equipment for lifting and transporting containers, and more particularly to a forklift, a forklift front axle structure, and an assembly method thereof. Background Technology

[0002] Forklifts, as container handling equipment, are often subjected to complex operating conditions such as frequent starts and stops, sharp turns, and bumpy roads. Their front axle structure is subjected to continuous mechanical vibration and impact loads. As the core transmission component of the front axle, the differential gearbox's housing and cover must maintain a sealed state at the joint surface to prevent lubricating oil leakage.

[0003] The sealing structures in related technologies generally adopt rigid fixing methods (such as bolt tightening or single elastic gaskets). During forklift operation, the sealing strip is prone to loosening, misalignment or even tearing due to vibration. The risk of sealing failure increases significantly, especially under heavy load conditions. Fixed sealing strips cannot automatically compensate for deformation with vibration. After long-term use, the sealing pressure decreases, leading to leakage. This causes gears to wear faster due to insufficient lubrication or uneven stress, shortening the service life of the entire vehicle.

[0004] Therefore, how to avoid differential gearbox seal failure due to vibration is a technical problem that urgently needs to be solved.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one forklift, a forklift front axle structure, and a method for assembling the same.

[0007] In a first aspect, embodiments of this disclosure provide a forklift front axle structure, including: Base body; The front axle is mounted on the base body; A differential gearbox is mounted on the base body and connected to the front axle; The differential gearbox includes: The housing is fixedly connected to the front axle; A cover that engages with the housing on the side away from the front axle; A sealing strip is provided at the junction of the housing and the cover; A clamping element is provided at the fixed end of the sealing strip, and the insertion end of the sealing strip passes through the through hole of the clamping element to clamp and seal the joint between the box body and the cover body; The top of the perforation is provided with a spring-loaded bearing shaft and a turning part; The spring-type retaining shaft is partially embedded in the top of the turning part, and the other part protrudes from the bottom surface of the turning part and abuts against the top surface of the insertion end of the sealing strip; The steering part is rotatably connected to the clamping member and is adapted to change the springback direction of the spring-type retaining shaft so that the spring-type retaining shaft tightly clamps the sealing strip at the joint between the housing and the cover.

[0008] In one alternative embodiment, when the insertion end of the sealing strip passes through the perforation, the spring-loaded retaining shaft rebounds in the opposite direction to the insertion direction of the insertion end of the sealing strip. When the sealing strip is tightened at the joint between the housing and the cover, the spring-loaded abutment shaft is changed by the turning part so that the spring-loaded abutment shaft is in the same direction as the insertion direction of the sealing strip, so that the insertion end of the sealing strip is tightened by the spring-loaded abutment shaft.

[0009] In one alternative embodiment, when the sealing strip is removed, the spring-loaded abutment shaft is deflected by a turning part to change the spring-loaded abutment shaft's rebound direction, which is opposite to the insertion direction of the sealing strip's insertion end, so that the spring-loaded abutment shaft's rebound force pushes the sealing strip's insertion end out of the perforation.

[0010] In one alternative embodiment, the clamping element includes a U-shaped connecting frame; The fixed end of the sealing strip is inserted into the lower end of the U-shaped connecting frame and is fixedly connected to the side wall of the U-shaped connecting frame. The fixed end of the sealing strip is spaced at a predetermined distance from the top wall of the U-shaped connecting frame to form a perforation for the insertion end of the sealing strip to pass through.

[0011] In one optional embodiment, the top of the gate-shaped connecting frame is provided with a receiving cavity; The steering part is rotatably disposed in the receiving cavity; The steering unit includes: The rotating column extends into the receiving cavity; The lower end of the rotating column extends radially outward to form a mounting block, and the bottom surface of the mounting block is provided with an embedding groove. The spring-type abutment shaft is rotatably disposed within the embedded groove; A compression spring is provided between the top surface of the mounting block and the top wall of the receiving cavity, and the pressure of the compression spring causes the spring-loaded retaining shaft to press the insertion end of the sealing strip.

[0012] In one alternative embodiment, a pair of locking blocks extend outward along the diametrical direction from the sidewall of the rotating column; The receiving cavity is provided with a slot at the corresponding card block fitting location; When it is necessary to change the springback direction of the spring-loaded bearing shaft, the rotating column is pulled upward by external force to separate the locking block from the corresponding slot. Then, the positions of the two locking blocks are swapped to complete the change of the springback direction.

[0013] In one alternative embodiment, the spring-loaded abutment shaft includes: Shaft body; The two ends of the shaft body are respectively fitted with coiled springs; Multiple friction racks are arranged circumferentially in the middle of the shaft body.

[0014] In one optional embodiment, the center of the rotating column is provided with an insertion hole communicating with the embedding groove; A plug rod is provided inside the socket; The end of the insertion rod extends downward along the axial direction to form an insertion plate; The bottom of the insertion rod is elastically connected to the limiting step of the insertion hole via a return spring; When the spring-loaded abutment shaft needs to be springbacked, the top of the insert rod is pressed by external force so that the insert plate is inserted into the gap between two adjacent friction racks.

[0015] Secondly, this disclosure also provides a forklift, which includes the aforementioned forklift front axle structure.

[0016] Thirdly, this disclosure also provides an assembly method for a forklift front axle structure as described above, the assembly method comprising: The differential gearbox housing is mounted on the front axle; Join the lid to the box body; The sealing strip is fastened to the joint between the box body and the cover by a clamping device; Furthermore, when the clamping member is inserted into the insertion end of the sealing strip, the spring on the spring-type retaining shaft is rotated after the sealing strip clamps the joint, so that the spring-type retaining shaft pushes the insertion end of the sealing strip to keep the joint in a tight clamping state.

[0017] The beneficial effects of this invention are that the forklift, its front axle structure, and its assembly achieve a tight clamping effect at the joint between the housing and the cover through the cooperation of the sealing strip and the clamping component. When the clamping component is inserted into the insertion end of the sealing strip, it drives the spring on the spring-type retaining shaft. After the sealing strip is tightened by external force, the spring-type retaining shaft's rebound direction is switched by the steering part, allowing it to continuously push the sealing strip. This utilizes the elastic rebound characteristics of the spring-type retaining shaft to compensate in real time for the attenuation of sealing pressure caused by vibration during forklift operation, avoiding leakage problems caused by insufficient deformation compensation in traditional rigid seals, thus improving the reliability of the seal. The steering part supports rapid switching of the spring-type retaining shaft's rebound direction, enabling the installation and removal of the sealing strip without disassembling the housing and cover, significantly shortening maintenance time and reducing operating costs.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the forklift front axle structure provided in an embodiment of this disclosure; Figure 2 A partial structural schematic diagram of the forklift front axle structure provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram showing the mating of the sealing strip and the clamping component according to an embodiment of the present disclosure; Figure 4 This is a cross-sectional view of the sealing strip and the clamping component provided in the embodiments of this disclosure. Figure 5 A cross-sectional view of the clamping component provided in an embodiment of this disclosure; Figure 6 This is an exploded view of a portion of the structure provided in an embodiment of this disclosure; Figure 7 A flowchart illustrating the assembly method of the forklift front axle structure provided in this embodiment.

[0022] In the diagram: 100, base body; 200, front axle; 300, differential gearbox; 310, housing; 320, cover; 330, sealing strip; 331, fixed end; 332, insertion end; 340, clamping element; 341, spring-loaded retaining shaft; 3411, shaft body; 3411a, friction rack; 3412, coiled spring; 342, steering part; 3421, rotating column; 3421a, locking block; 3421b, insertion hole; 3422, mounting block; 3423, embedding groove; 3423a, insertion slot; 3424, compression spring; 343, U-shaped connecting frame; 3431, receiving cavity; 344, through hole; 345, insertion rod; 3451, insertion plate; 3452, return spring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] The sealing structures in related technologies generally adopt rigid fixing methods (such as bolt tightening or single elastic gaskets). During forklift operation, the sealing strip is prone to loosening, misalignment or even tearing due to vibration. The risk of sealing failure increases significantly, especially under heavy load conditions. Fixed sealing strips cannot automatically compensate for deformation with vibration. After long-term use, the sealing pressure decreases, leading to leakage. This causes gears to wear faster due to insufficient lubrication or uneven stress, shortening the service life of the entire vehicle.

[0030] Based on the above research, this disclosure provides a forklift front axle structure and its assembly method. The sealing strip 330 and the clamping member 340 are used to tighten the joint of the housing 310 and the cover 320. When the insertion end 332 of the sealing strip 330 is inserted into the clamping member 340, the spring-type abutment shaft 341 is wound. After the sealing strip 330 is tightened by external force, the spring-type abutment shaft 341 is switched by the steering part 342, so that the spring-type abutment shaft 341 continuously pushes the sealing strip 330. In this way, the elastic rebound characteristics of the spring-type abutment shaft 341 compensate for the attenuation of sealing pressure caused by vibration during forklift operation in real time, avoiding the leakage problem caused by insufficient deformation compensation of traditional rigid seals.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Please see Figure 1 and Figure 2 At least one embodiment provides a first aspect, which provides a forklift front axle structure, including: a base body 100; a front axle 200 disposed on the base body 100; and a differential gearbox 300 disposed on the base body 100 and connected to the front axle 200; wherein the differential gearbox 300 includes: a housing 310 fixedly connected to the front axle 200; a cover 320 engaged on the side of the housing 310 away from the front axle 200; a sealing strip 330 disposed at the junction of the housing 310 and the cover 320; and a clamping member 340 disposed at the fixed end 331 of the sealing strip 330, wherein the insertion end 332 of the sealing strip 330 passes through the through hole 344 of the clamping member 340 to clamp and seal the junction of the housing 310 and the cover 320.

[0035] Specifically, please refer to Figure 3 and Figure 4The top of the perforation 344 is provided with a spring-loaded abutment shaft 341 and a turning part 342; part of the spring-loaded abutment shaft 341 is embedded in the top of the turning part 342, and the other part protrudes from the bottom surface of the turning part 342 and abuts against the top surface of the insertion end 332 of the sealing strip 330; the turning part 342 is rotatably connected to the clamping member 340 and is adapted to change the spring-loaded abutment shaft 341 so that the spring-loaded abutment shaft 341 tightly clamps the sealing strip 330 at the joint of the housing 310 and the cover 320.

[0036] The sealing strip 330 and the clamping member 340 work together to tighten the joint between the housing 310 and the cover 320. When the insertion end 332 of the sealing strip 330 is inserted into the clamping member 340, it winds the spring-type support shaft 341. After the sealing strip 330 is tightened by external force, the spring-type support shaft 341 is switched in the direction of rebound by the steering part 342, so that the spring-type support shaft 341 continuously pushes the sealing strip 330. This is because the elastic rebound characteristic of the spring-type support shaft 341 compensates for the attenuation of sealing pressure caused by vibration during forklift operation in real time, avoiding leakage problems caused by insufficient deformation compensation of traditional rigid seals, thereby improving the reliability of the seal. The steering part 342 supports quick switching of the rebound direction of the spring-type support shaft 341, allowing the sealing strip 330 to be installed and removed without disassembling the housing 310 and the cover 320, greatly shortening maintenance time and reducing operation and maintenance costs.

[0037] Please continue reading. Figure 4 When the insertion end 332 of the sealing strip 330 passes through the through hole 344, the spring-loaded retaining shaft 341 rebounds in the following direction (e.g., Figure 4 As shown in F2, the insertion direction of the insertion end 332 of the sealing strip 330 is (as shown in F2). Figure 4 (As shown in F1) On the contrary; when the sealing strip 330 is tightened at the joint of the housing 310 and the cover 320, the spring-loaded bearing shaft 341 is changed by the turning part, so that the spring-loaded bearing shaft 341 springs in the opposite direction (as shown in F1); Figure 4 (as shown in F2) and the insertion direction of the insertion end 332 of the sealing strip 330 (as shown in F2) Figure 4 As shown in F1, the insertion end 332 of the sealing strip 330 is tightened by the spring-loaded retaining shaft 341.

[0038] By switching the spring direction of the spring-loaded retaining shaft 341, energy is stored in the reverse direction during the installation of the sealing strip 330. After the sealing strip 330 is installed, pressure is applied in the same direction when the sealing strip 330 is tightened by the spring-loaded retaining shaft 341. When the sealing strip 330 becomes loose due to vibration, the sealing pressure of the sealing strip 330 can be dynamically compensated, thereby solving the problem of pressure attenuation caused by vibration. This allows the sealing strip 330 to maintain a constant clamping force under complex working conditions, effectively preventing lubricating oil leakage and extending the service life of the gearbox.

[0039] Please continue reading. Figure 4 When the sealing strip 330 is disassembled, the spring-loaded support shaft 341 is changed by the turning part. The spring-loaded support shaft 341 is opposite to the insertion direction of the insertion end 332 of the sealing strip 330, so that the insertion end 332 of the sealing strip 330 is pushed out of the perforation 344 by the spring-loaded support shaft 341.

[0040] The design of the spring-loaded retaining shaft 341, which releases energy in reverse during disassembly, allows the sealing strip 330 to quickly detach from the clamping member 340 via the rebound force of the spring-loaded retaining shaft 341, eliminating the need for manual removal or disassembly of the housing 310 and cover 320. Compared to the traditional solution that requires complete disassembly of the gearbox to replace the sealing strip 330, this improves maintenance efficiency.

[0041] Please see Figure 4 and Figure 5 The clamping member 340 includes a U-shaped connecting frame 343; the fixed end 331 of the sealing strip 330 is inserted into the lower end of the U-shaped connecting frame 343 and is fixedly connected to the side wall of the U-shaped connecting frame 343; the fixed end 331 of the sealing strip 330 is spaced at a preset distance from the top wall of the U-shaped connecting frame 343 to form a through hole 344 for the insertion end 332 of the sealing strip 330 to pass through.

[0042] The top of the U-shaped connecting frame 343 is provided with a receiving cavity 3431; the turning part 342 is rotatably disposed in the receiving cavity 3431; the turning part 342 includes: a rotating column 3421, which extends into the receiving cavity 3431; the lower end of the rotating column 3421 extends radially outward to form a mounting block 3422, and the bottom surface of the mounting block 3422 is provided with an embedding groove 3423; the spring-loaded abutment shaft 341 is rotatably disposed in the embedding groove 3423; a compression spring 3424 is provided between the top surface of the mounting block 3422 and the top wall of the receiving cavity 3431, and the pressure of the compression spring 3424 causes the spring-loaded abutment shaft 341 to press the insertion end 332 of the sealing strip 330.

[0043] The preloaded steering part 342 of the compression spring 3424 achieves a dual function: first, it ensures that the spring-type retaining shaft 341 and the sealing strip 330 are in close contact through vertical pressure, ensuring the reliability of the seal; second, it allows for the buffering of vibration forces in the horizontal direction, adapting to the deformation of the sealing surface under different working conditions.

[0044] Please see Figure 5 and Figure 6 The sidewall of the rotating column 3421 extends outward along the diameter direction to form a pair of locking blocks 3421a; the receiving cavity 3431 is provided with a locking groove at the matching position of the corresponding locking block 3421a; when it is necessary to change the spring-loaded support shaft 341, the rotating column 3421 is pulled upward by external force to separate the locking block 3421a from the corresponding locking groove, and then the positions of the two locking blocks 3421a are swapped to complete the change of the spring-loaded direction.

[0045] By cooperating with the slot, the spring-loaded bearing shaft 341 can be quickly switched, facilitating the quick installation and removal of the sealing strip 330 and thus improving maintenance efficiency.

[0046] Please see Figure 5 and Figure 6 The spring-loaded retaining shaft 341 includes: a shaft body 3411; two ends of the shaft body 3411 are respectively fitted with coiled spring plates 3412; and multiple friction racks 3411a are arranged circumferentially in the middle of the shaft body 3411. The symmetrical arrangement of the double coiled spring plates 3412 forms redundant support, which can maintain 70% of the initial preload even if one side of the coiled spring fails.

[0047] In a preferred embodiment, the top surface of the insertion end 332 of the sealing strip 330 is provided with a groove that is adapted to the friction rack 3411a. The friction rack 3411a abuts against the sealing strip 330 through meshing, thereby maintaining a long-term stable output of sealing pressure.

[0048] Please see Figure 5 and Figure 6 The rotating column 3421 has a socket 3421b in the middle that communicates with the embedding groove 3423; a plug rod 345 is provided in the socket 3421b; the end of the plug rod 345 extends axially downward to form a plug plate 3451; the bottom of the plug rod 345 is elastically connected to the limiting step of the socket 3421b through a return spring 3452; when the spring-loaded abutment shaft 341 needs to be springbacked, the top of the plug rod 345 is pressed by external force so that the plug plate 3451 is inserted into the gap between two adjacent friction racks 3411a.

[0049] The locking mechanism of the insert rod 345-insert plate 3451 replaces the traditional threaded locking with mechanical engagement. When the spring-type abutment shaft 341 is reversed, the insert rod 345 is manually pressed to insert the insert plate 3451 into the gap between the two adjacent friction racks 3411a of the spring-type abutment shaft 341, thereby preventing the spring-type abutment shaft 341 from rotating during reversal.

[0050] Specifically, the inner end of the coil spring 3412 is fixedly connected to the shaft body 3411; the outer end of the coil spring 3412 is inserted into the slot 3423a of the embedding groove 3423.

[0051] At least one embodiment also provides a forklift including the forklift front axle structure described above.

[0052] Please see Figure 7 At least one embodiment also provides an assembly method for the forklift front axle structure described above. Through the cooperation of the sealing strip 330 and the clamping member 340, a tight clamp is achieved at the joint between the housing 310 and the cover 320. When the insertion end 332 of the sealing strip 330 is inserted into the clamping member 340, a spring is wound on the spring-type support shaft 341. After the sealing strip 330 is tightened by external force, the spring-type support shaft 341's rebound direction is switched by the steering part 342, causing the spring-type support shaft 341 to continuously push the sealing strip 330. This allows the elastic rebound characteristics of the spring-type support shaft 341 to compensate in real time for the attenuation of sealing pressure caused by vibration during forklift operation, avoiding leakage problems caused by insufficient deformation compensation in traditional rigid seals, thereby improving the reliability of the seal. The steering unit 342 supports the rapid switching of the spring-loaded bearing shaft 341's rebound direction, enabling the installation and removal of the sealing strip 330 without disassembling the housing 310 and cover 320, thus significantly shortening maintenance time and reducing operation and maintenance costs.

[0053] Specifically, the assembly method includes: S110: Install the housing 310 of the differential gearbox 300 onto the front axle 200; S120: Attach the cover 320 to the housing 310; S130: The sealing strip 330 is fastened to the joint between the housing 310 and the cover 320 by the clamping member 340.

[0054] Furthermore, when the clamping member 340 is inserted into the insertion end 332 of the sealing strip 330, the spring on the spring-type abutment shaft 341 is wound, and after the sealing strip 330 clamps the joint, the turning part 342 is rotated so that the spring-type abutment shaft 341 pushes the insertion end 332 of the sealing strip 330 to keep the joint in a tight clamping state.

[0055] The beneficial effects of this invention are that the forklift front axle structure and its assembly method use the cooperation of sealing strip 330 and clamping member 340 to achieve tight clamping at the joint of housing 310 and cover 320. When the insertion end 332 of sealing strip 330 is inserted into clamping member 340, it drives the spring-type abutment shaft 341 to wind. After the sealing strip 330 is tightened by external force, the spring-type abutment shaft 341 is switched by steering part 342 to make the spring-type abutment shaft 341 continuously push the sealing strip 330. Thus, the elastic rebound characteristics of spring-type abutment shaft 341 compensate for the sealing pressure attenuation caused by vibration during forklift operation in real time, avoiding the leakage problem caused by insufficient deformation compensation of traditional rigid seals, thereby improving the reliability of the seal. The steering unit 342 supports the rapid switching of the spring-loaded bearing shaft 341's rebound direction, enabling the installation and removal of the sealing strip 330 without disassembling the housing 310 and cover 320, thus significantly shortening maintenance time and reducing operation and maintenance costs.

[0056] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0057] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0058] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0059] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0060] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A forklift front axle structure, characterized in that, include: Base body (100); A front axle (200) is mounted on the base body (100); A differential gearbox (300) is mounted on the base body (100) and connected to the front axle (200); The differential gearbox (300) includes: The housing (310) is fixedly connected to the front axle (200); Cover (320), which is joined to the side of the housing (310) away from the front axle (200); A sealing strip (330) is provided at the junction of the housing (310) and the cover (320); A clamping member (340) is disposed at the fixed end (331) of the sealing strip (330), and the insertion end (332) of the sealing strip (330) passes through the through hole (344) of the clamping member (340) to clamp and seal the joint between the box body (310) and the cover body (320); The top of the perforation (344) is provided with a spring-loaded bearing shaft (341) and a turning part (342). The spring-loaded support shaft (341) is partially embedded in the top of the turning part (342), and the other part protrudes from the bottom surface of the turning part (342) and abuts against the top surface of the insertion end (332) of the sealing strip (330). The turning part (342) is rotatably connected to the clamping member (340) and is adapted to change the springback direction of the spring-type retaining shaft (341) so that the spring-type retaining shaft (341) tightly clamps the sealing strip (330) at the joint between the housing (310) and the cover (320).

2. The forklift front axle structure as described in claim 1, characterized in that, When the insertion end (332) of the sealing strip (330) passes through the perforation (344), the spring-loaded abutment shaft (341) rebounds in the opposite direction to the insertion direction of the insertion end (332) of the sealing strip (330); When the sealing strip (330) is tightened at the joint of the housing (310) and the cover (320), the spring-loaded support shaft (341) is changed by the turning part (342) so that the spring-loaded support shaft (341) is in the same direction as the insertion direction of the insertion end (332) of the sealing strip (330), so that the insertion end (332) of the sealing strip (330) is tightened by the spring-loaded support shaft (341).

3. The forklift front axle structure as described in claim 2, characterized in that, When the sealing strip (330) is disassembled, the spring-loaded support shaft (341) is changed by the turning part (342). The spring-loaded support shaft (341) is opposite to the insertion direction of the insertion end (332) of the sealing strip (330), so that the insertion end (332) of the sealing strip (330) is pushed out of the perforation (344) by the spring-loaded support shaft (341).

4. The forklift front axle structure as described in claim 1, characterized in that, The clamping component (340) includes a U-shaped connecting frame (343); The fixed end (331) of the sealing strip (330) is inserted into the lower end of the door-shaped connecting frame (343) and is fixedly connected to the side wall of the door-shaped connecting frame (343); The fixed end (331) of the sealing strip (330) is spaced at a predetermined distance from the top wall of the U-shaped connecting frame (343) to form a perforation (344) for the insertion end (332) of the sealing strip (330) to pass through.

5. The forklift front axle structure as described in claim 4, characterized in that, The top of the gate-shaped connecting frame (343) is provided with a receiving cavity (3431). The steering part (342) is rotatably disposed in the receiving cavity (3431); The steering unit (342) includes: A rotating column (3421) extends into the receiving cavity (3431); The lower end of the rotating column (3421) extends radially outward to form a mounting block (3422), and the bottom surface of the mounting block (3422) is provided with an embedding groove (3423). The spring-loaded bearing shaft (341) is rotatably disposed within the embedded groove (3423); A compression spring (3424) is provided between the top surface of the mounting block (3422) and the top wall of the receiving cavity (3431), and the pressure of the compression spring (3424) causes the spring-loaded abutment shaft (341) to press the insertion end (332) of the sealing strip (330).

6. The forklift front axle structure as described in claim 5, characterized in that, A pair of locking blocks (3421a) extend outward along the diameter direction from the side wall of the rotating column (3421). The receiving cavity (3431) and the corresponding card block (3421a) are provided with a card slot; When it is necessary to change the spring-loaded bearing shaft (341) return direction, the rotating column (3421) is pulled upward by external force so that the locking block (3421a) is separated from the corresponding locking slot. Then, the positions of the two locking blocks (3421a) are swapped to complete the change of return direction.

7. The forklift front axle structure as described in claim 6, characterized in that, The spring-loaded retaining shaft (341) includes: Shaft body (3411); The two ends of the shaft body (3411) are respectively fitted with coil springs (3412). The shaft body (3411) has a plurality of friction racks (3411a) arranged circumferentially in the middle part.

8. The forklift front axle structure as described in claim 7, characterized in that, The rotating column (3421) has a socket (3421b) in the middle that communicates with the embedding groove (3423). A plug rod (345) is provided inside the socket (3421b); The end of the insertion rod (345) extends axially downward to form an insertion plate (3451). The bottom of the insertion rod (345) is elastically connected to the limiting step of the insertion hole (3421b) via a return spring (3452); When the spring-loaded abutment shaft (341) is reversed, the top of the insert rod (345) is pressed by external force so that the insert plate (3451) is inserted into the gap between two adjacent friction racks (3411a).

9. A forklift, characterized in that, The forklift includes the forklift front axle structure as described in any one of claims 1-8.

10. An assembly method for a forklift front axle structure as described in any one of claims 1-8, characterized in that, The assembly method includes: The housing (310) of the differential gearbox (300) is mounted on the front axle (200); The cover (320) is attached to the box (310); The sealing strip (330) is fastened to the joint between the housing (310) and the cover (320) by the clamping element (340); Furthermore, when the clamping member (340) is inserted into the insertion end (332) of the sealing strip (330), the spring on the spring-type abutment shaft (341) is rotated after the sealing strip (330) clamps the joint, so that the spring-type abutment shaft (341) pushes the insertion end (332) of the sealing strip (330) to keep the joint clamped.

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