Heavy fork truck drive axle axle head flange processing technology and processing device thereof

Abstract

The present application relates to heavy fork truck accessory processing equipment technical field, provide a kind of heavy fork truck drive axle axle head flange processing process and its processing device, comprising the following steps: S1.the drive axle axle head flange of heavy fork truck is set by two flange pieces and two connecting shaft plate components assembly composition;S2.processing platform and positioning shaft are set, respectively on the left part and right part of processing platform Setting fixed position that can lock or release the bolt hole of two flange piece components, and the middle part of processing platform after the locking of two flange piece components is equipped with the placement groove for the side-by-side parallel placement of two connecting shaft plate components;S3 two connecting shaft plate components are positioned coaxially by positioning shaft through the shaft hole of two connecting shaft plates, the flange piece component of left part and left part connecting shaft plate contact edge welding processing, the flange piece component of right part and right part connecting shaft plate contact edge welding processing.The present application solves the problem that the machining precision of the axle head flange of the existing heavy fork truck drive axle is not high, and the machining cost is high.

Description

Technical Field

[0001] This invention relates to the field of forklift parts manufacturing technology, and in particular to a processing technology and processing device for a heavy-duty forklift drive axle flange. Background Technology

[0002] Forklifts are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods. The International Organization for Standardization (ISO / TC110) refers to them as industrial vehicles. They are commonly used for transporting large objects in warehouses and are typically powered by internal combustion engines or batteries. Heavy-duty forklifts, on the other hand, use diesel engines and have a load capacity of 10.0–52.0 tons. They are generally used for outdoor operations in industries such as docks and steel mills where heavy loads are concentrated. The drive axle flange of a heavy-duty forklift is a crucial component connecting the drive axle and the forklift body. Due to their large size, heavy-duty forklift drive axle flanges cannot be cast in one piece. While casting is possible, the resulting molds are numerous and enormous, making the cost prohibitively high. This is an exorbitant cost for small and medium-sized factories, especially those producing heavy-duty forklifts, as their annual output is typically no more than double digits. The cost of casting molds for producing drive axle flanges is simply unaffordable for small and medium-sized factories. Figure 1 The two drive axle head flanges of heavy-duty forklifts include flange plates 1' locked onto the left and right ends of the drive axle, and connecting shaft plates 2' with one end fixedly connected to the flange plate 1' and the free end connected to the vehicle body. Due to the lack of dedicated processing equipment, existing small and medium-sized factories require skilled workers to rely on experience to process the drive axle head flanges of heavy-duty forklifts. This involves multiple steps, including scribing, angle division, centering the flange plates 1' and connecting shaft plates 2', and welding. This process is inefficient, lacks precision, and is costly. Furthermore, the two connecting shaft plates 2' often cannot be coaxially locked onto the forklift body, especially when one is damaged and needs replacement; both plates must be replaced, making standardized replacement impossible. Therefore, effectively reducing costs and increasing production profits in the production of heavy-duty forklift drive axle head flanges is a pressing issue. Summary of the Invention

[0003] Therefore, in view of the above problems, this invention proposes a processing technology and processing device for heavy-duty forklift drive axle flanges that has high processing efficiency, high processing precision, saves a lot of production costs, and improves enterprise production efficiency.

[0004] To solve this technical problem, the present invention adopts the following solution: a processing method for the flange of the drive axle of a heavy-duty forklift, comprising the following steps:

[0005] S1. The drive axle flange of the heavy-duty forklift is assembled and fixed by two flange plates and two connecting shaft plates. The two flange plates and two connecting shaft plates are cast to obtain two semi-finished flange plates and two semi-finished connecting shaft plates. The flange bolt holes for locking with the drive axle fastener and the arc-shaped mounting part that matches the arc-shaped part of the drive axle fastener are precision machined on the two semi-finished flange plates to obtain two flange plate components. The second arc-shaped mounting part that matches the drive axle fastener and the shaft hole that connects to the vehicle body are precision machined on the two semi-finished connecting shaft plates to obtain two connecting shaft plate components.

[0006] S2. A machining platform and a positioning shaft are provided. Fixing positions for locking or loosening the bolt holes of two flange components are provided on the left and right sides of the machining platform. Arc-shaped limiting parts with protruding surfaces are provided in the middle of the left and right sides of the machining platform at the arc-shaped mounting part of the flange component. The machining platform is provided in the middle after the two flange components are locked, and a placement groove is provided for the two connecting shaft plate components to be placed side by side in parallel.

[0007] S3. Match and lock the two flange pieces obtained in step S1 to the fixed positions on the left and right sides of the processing platform in step S2, with the arc-shaped mounting parts of the two flange pieces fitting and covering the arc-shaped limiting parts of the processing platform. Place the two connecting shaft plate pieces side by side parallel to each other on the processing platform, with the second arc-shaped mounting parts of the two connecting shaft plate pieces and the arc-shaped mounting parts of the two flange pieces placed coaxially. Pass the positioning shaft through the shaft holes of the two connecting shaft plates to position the two connecting shaft plate pieces coaxially. Weld the contact edge between the left flange piece and the left connecting shaft plate, and weld the contact edge between the right flange piece and the right connecting shaft plate. After welding, remove the positioning shaft and the fixing rods of the bolt holes on the two flange pieces to obtain a pair of finished bridge head flanges.

[0008] Furthermore, in step S2, the arc-shaped limiting part of the processing platform includes an arc-shaped support plate and two positioning strips located at both ends of the arc-shaped support plate. The two positioning strips are arranged in parallel and perpendicular to the arc-shaped support plate. The thickness of the two positioning strips matches the thickness of the inner wall sides of the arc-shaped mounting part of the flange component and the second arc-shaped mounting part of the connecting shaft plate.

[0009] Furthermore, the processing platform is equipped with support columns at its bottom.

[0010] Furthermore, the positioning shaft in step 2 has external threads at both ends and matching nuts are fitted at both ends of the positioning shaft.

[0011] A device for machining the axle flange of a heavy-duty forklift drive axle includes a machining platform and a positioning shaft. The left and right sides of the machining platform are respectively provided with fixing holes that match the bolt holes of two flange components. The middle of the left and right sides of the machining platform is respectively provided with an arc-shaped limiting part with a protruding surface at the arc-shaped mounting part of the flange component. After the two flange components are locked, the machining platform forms a placement groove in the middle of the two connecting shaft plate components that are placed side by side in parallel. The positioning shaft is detachably installed through the shaft holes of the two connecting shaft plates to connect and position the shaft holes of the two connecting shaft plates in series.

[0012] Furthermore, the arc-shaped limiting part includes an arc-shaped support plate and two positioning strips disposed at both ends of the arc-shaped support plate. The arc-shaped support plate is adapted to the arc-shaped mounting part of the flange plate. The two positioning strips are arranged in parallel and are both perpendicular to the arc-shaped support plate. The thickness of the two positioning strips matches the height of the bottom sides of the inner wall of the arc-shaped mounting part of the flange plate component and the second arc-shaped mounting part of the connecting shaft plate.

[0013] Furthermore, the processing platform is equipped with support columns at its bottom.

[0014] Furthermore, the positioning shaft has external threads at both ends and matching detachable nuts are fitted at both ends of the positioning shaft.

[0015] By adopting the aforementioned technical solution, the beneficial effects of the present invention are as follows: The drive axle flange of a heavy-duty forklift is assembled and fixed by two flange plates and two connecting shaft plates. Bolt holes, arc-shaped mounting portions, shaft holes, and second arc-shaped mounting portions are machined on the two flange plates and the two connecting shaft plates respectively. The two flange plates are matched and locked onto the left and right fixed positions of the machining platform, with the arc-shaped mounting portions of the two flange plates fitting and covering the arc-shaped limiting portion of the machining platform. The two connecting shaft plates are placed side-by-side and parallel on the machining platform, with the second arc-shaped mounting portions of the two connecting shaft plates and the arc-shaped mounting portions of the two flange plates placed coaxially. A positioning shaft passes through the shaft holes of the two connecting shaft plates to coaxially position the two connecting shaft plates. The contact edges of the left flange plate and the left connecting shaft plate are welded. The right flange plate and... The right-side connecting shaft plate is welded at the contact edge. After welding, the fixing rods of the positioning shaft and the bolt holes on the two flange plates are removed to complete the machining of the bridge head flange. This allows for precise matching of the machining of a pair of bridge head flanges, enabling the bolt holes, arc-shaped mounting parts, shaft holes, and second arc-shaped mounting parts of the bridge head flanges to be compatible with the installation structure of the drive axle. If one is damaged, only the other needs to be replaced. Precise positioning and welding between the connecting shaft plate and the flange plates can be achieved simply by locking them onto the machining platform, enabling them to be compatible. The entire mold can be opened wirelessly, allowing for high-precision and high-efficiency welding between the connecting shaft plate and the flange plates. This reduces operational difficulty, saves a lot of production costs, and improves enterprise production efficiency. It greatly reduces production costs, allowing small and medium-sized enterprises to complete the precision machining that previously required high-cost ultra-large molds using ordinary machining equipment such as lathes. This technology can be widely promoted and applied. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an existing bridge abutment flange;

[0017] Figure 2 This is a schematic diagram of the flange structure in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the connecting shaft plate in an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the processing platform in an embodiment of the present invention. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to Figures 2-4 The preferred processing method for the heavy-duty forklift drive axle flange of the present invention includes the following steps:

[0022] S1. The drive axle flange of the heavy-duty forklift is assembled and fixed by two flange plates 1 and two connecting shaft plates 2. The two flange plates and two connecting shaft plates are cast to obtain two flange plate semi-finished products and two connecting shaft plate semi-finished products. The flange plate bolt holes for locking with the drive axle fastener and the arc-shaped mounting part that matches the arc-shaped part of the drive axle fastener are respectively machined on the two flange plate semi-finished products to obtain two flange plate 1 components. The second arc-shaped mounting part that matches the drive axle fastener and the shaft hole that connects to the vehicle body are respectively machined on the two connecting shaft plate semi-finished products to obtain two connecting shaft plate 2 components.

[0023] S2. A processing platform 3 and a positioning shaft 4 are provided. Fixing positions 31 and 32, which can lock or loosen the bolt holes of the two flange plate 1 components, are respectively provided on the left and right sides of the processing platform 3. Arc-shaped limiting parts 33 and 34, which protrude from the surface, are respectively provided at the arc-shaped mounting part 11 of the flange plate 1 component in the middle of the left and right sides of the processing platform 3. Arc-shaped limiting parts 33 and 34 include arc-shaped support plates and two positioning strips at both ends of the arc-shaped support plates. The two positioning strips are arranged in parallel and perpendicular to the arc-shaped support plates. The thickness of the two positioning strips matches the thickness of the inner wall sides of the arc-shaped mounting part of the flange plate component and the second arc-shaped mounting part of the connecting shaft plate. Both positioning strips are a small section used to lock and limit the second arc-shaped mounting part of the connecting shaft plate 2. The processing platform 3 is provided in the middle after the two flange plate 1 components are locked, and a placement groove 35 is provided for the two connecting shaft plate components 2 to be placed side by side in parallel.

[0024] S3. The two flange pieces 1 obtained in step S1 are respectively matched and locked onto the fixing positions 31 and 32 on the left and right sides of the processing platform 3 in step S2, and the arc-shaped mounting parts 11 of the two flange pieces 1 are attached to the arc-shaped limiting parts 33 and 34 of the processing platform 3. The two connecting shaft plates 2 are placed side by side and parallel on the processing platform 3, and the second arc-shaped mounting parts 21 of the two connecting shaft plates 2 are placed coaxially with the arc-shaped mounting parts of the two flange pieces 1. The positioning shaft 4 has external threads at both ends and matching nuts at both ends. The positioning shaft 4 is passed through the shaft holes 22 of the two connecting shaft plates 2 to position the two connecting shaft plates 2 coaxially. The contact edge between the left flange piece 1 and the left connecting shaft plate 2 is welded, and the contact edge between the right flange piece 1 and the right connecting shaft plate 2 is welded. After welding, the positioning shaft 4 and the fixing rods of the bolt holes 12 on the two flange pieces 1 are removed to obtain a pair of finished bridge head flanges.

[0025] refer to Figures 2-4A preferred heavy-duty forklift drive axle flange processing device includes a processing platform 3 and a positioning shaft 4. The processing platform 3 has fixing holes 31 and 32 on its left and right sides, respectively, that match the bolt holes of the two flange components. The processing platform 3 also has protruding arc-shaped limiting parts 33 and 34 at the arc-shaped mounting portion of the flange component 1, located in the middle of the left and right sides. The arc-shaped limiting parts 33 and 34 include an arc-shaped support plate and two positioning strips at both ends of the arc-shaped support plate. The arc-shaped support plate is adapted to the arc-shaped mounting portion 11 of the flange component 1. Two positioning strips are arranged in parallel and perpendicular to the arc-shaped support plate. The thickness of the two positioning strips matches the height of the inner bottom sides of the arc-shaped mounting part 11 of the flange plate 1 and the second arc-shaped mounting part 21 of the connecting shaft plate 2. The processing platform 3 forms a placement groove 35 in the middle of the two connecting shaft plates 2 after the two flange plate 1 parts are locked, in which the two connecting shaft plates 2 parts are placed side by side in parallel. The positioning shaft 4 is detachably installed on the shaft holes 22 of the two connecting shaft plates 2 to connect and position the shaft holes 22 of the two connecting shaft plates 2 in series. The bottom of the processing platform 3 is provided with a support column 36.

[0026] In this invention, the positioning shaft can also be provided with external threads at both ends and matching nuts are fitted at both ends of the positioning shaft to facilitate the positioning shaft to fix and position the two connecting shaft plates after the shaft holes are connected. The two positioning strips of the two arc-shaped limiting parts on the processing platform can also be extended and connected to form a long strip.

[0027] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A processing method for the axle flange of a heavy-duty forklift drive axle, characterized in that: Includes the following steps: S1. The drive axle flange of the heavy-duty forklift is assembled and fixed by two flange plates and two connecting shaft plates. The two flange plates and two connecting shaft plates are cast to obtain two semi-finished flange plates and two semi-finished connecting shaft plates. The flange bolt holes for locking with the drive axle fastener and the arc-shaped mounting part that matches the arc-shaped part of the drive axle fastener are precision machined on the two semi-finished flange plates to obtain two flange plate components. The second arc-shaped mounting part that matches the drive axle fastener and the shaft hole that connects to the vehicle body are precision machined on the two semi-finished connecting shaft plates to obtain two connecting shaft plate components. S2. A machining platform and a positioning shaft are provided. Fixing positions for locking or loosening the bolt holes of two flange components are provided on the left and right sides of the machining platform. Arc-shaped limiting parts with protruding surfaces are provided in the middle of the left and right sides of the machining platform at the arc-shaped mounting part of the flange component. The machining platform is provided in the middle after the two flange components are locked, and a placement groove is provided for the two connecting shaft plate components to be placed side by side in parallel. S3. Match and lock the two flange pieces obtained in step S1 to the fixed positions on the left and right sides of the processing platform in step S2, with the arc-shaped mounting parts of the two flange pieces fitting and covering the arc-shaped limiting parts of the processing platform. Place the two connecting shaft plate pieces side by side parallel to each other on the processing platform, with the second arc-shaped mounting parts of the two connecting shaft plate pieces and the arc-shaped mounting parts of the two flange pieces placed coaxially. Pass the positioning shaft through the shaft holes of the two connecting shaft plates to position the two connecting shaft plate pieces coaxially. Weld the contact edge between the left flange piece and the left connecting shaft plate, and weld the contact edge between the right flange piece and the right connecting shaft plate. After welding, remove the positioning shaft and the fixing rods of the bolt holes on the two flange pieces to obtain a pair of finished bridge head flanges.

2. The processing technology for the heavy-duty forklift drive axle flange according to claim 1, characterized in that: In step S2, the arc-shaped limiting part of the processing platform includes an arc-shaped support plate and two positioning strips located at both ends of the arc-shaped support plate. The two positioning strips are arranged in parallel and perpendicular to the arc-shaped support plate. The thickness of the two positioning strips matches the thickness of the inner wall of the arc-shaped mounting part of the flange component and the second arc-shaped mounting part of the connecting shaft plate.

3. The processing technology for the heavy-duty forklift drive axle flange according to claim 1 or 2, characterized in that: The processing platform is equipped with support columns at its bottom.

4. The processing technology for the heavy-duty forklift drive axle flange according to claim 1, characterized in that: The positioning shaft in step 2 has external threads at both ends and matching nuts are fitted at both ends.

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