Universal underframe
By designing a universal chassis that is compatible with split and integrated drive axles, and using built-in grooves and connecting frames to achieve left and right swing, the management complexity caused by differences in drive axle structures is solved, costs are reduced, and adaptability is improved.
Patent Information
- Application Number
- CN202511038159.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2025-10-24
AI Technical Summary
The differences in existing drive axle structures require the maintenance of two sets of process tooling, complex material turnover systems and inventory management, and increase design and manufacturing costs and management difficulty.
A universal chassis is designed with front and rear embedded slots and connecting frames, which is suitable for split and integrated drive axles. It realizes left and right swing through rotating connections and floating cylinders, eliminating the original two sets of independent chassis.
It achieves compatibility with two drive axles, reduces chassis design, manufacturing and inventory costs, lowers chassis height, and improves assembly efficiency and structural adaptability.
Smart Images
Figure CN120828872A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of drive axle, in particular to a universal chassis. BACKGROUND
[0002] The arm type aerial work platform is the key equipment in the fields of engineering construction, ship repairing and industrial installation, and the structural adaptability of the chassis drive system of the arm type aerial work platform directly affects the production efficiency and comprehensive cost. Currently, the mainstream drive axle in the industry is divided into two forms: Split type drive axle: the front axle assembly is independent, the rear axle is welded on the chassis, and the drive motor, walking reduction machine and other parts are installed separately, which is flexible in structure but needs to be customized with a special chassis; Integrated drive axle: the front and rear axles, transmission shaft and drive motor are integrated, which is convenient to install but also depends on a special chassis.
[0003] The two types of drive axles need to match two independent chassis due to structural differences, which leads to the need to maintain two sets of process tooling, material turnover systems and inventory management systems in production, increasing the design and manufacturing costs and management complexity; Therefore, a universal chassis compatible with the two types of drive axles is needed. SUMMARY
[0004] The embodiment of the present application provides a universal chassis to solve the problems in the prior art.
[0005] The embodiment of the present application adopts the following technical scheme: a universal chassis is installed on a first front axle assembly and a first rear axle assembly, or installed on a second front axle assembly and a second rear axle assembly; the universal chassis has a first embedded groove on the front side and a second embedded groove on the rear side; When the universal chassis is installed on the first front axle assembly and the first rear axle assembly, the universal chassis is located above the first front axle assembly and the first rear axle assembly, and the first front axle assembly is at least partially embedded in the first embedded groove and rotationally connected in the first embedded groove to realize left and right swinging of the first front axle assembly relative to the universal chassis, and the first rear axle assembly is at least partially embedded in the second embedded groove and fixedly connected thereto; The second front axle assembly is provided with a front axle connecting frame above, and the second rear axle assembly is provided with a rear axle connecting frame above; when the universal chassis is installed on the second front axle assembly and the second rear axle assembly, the universal chassis is located above the front axle connecting frame and the rear axle connecting frame, and the front axle connecting frame is at least partially embedded in the first embedded groove and fixedly connected thereto, and the front axle connecting frame is rotationally connected with the second front axle assembly to realize left and right swinging of the second front axle assembly relative to the front axle connecting frame, and the rear axle connecting frame is at least partially embedded in the second embedded groove and fixedly connected thereto.
[0006] Preferably, the universal chassis is further provided with a front axle intermediate shaft hole; the first front axle assembly is rotatably connected with a first shaft pin, which is rotatably inserted into the front axle intermediate shaft hole.
[0007] Preferably, the universal chassis is further provided with at least one first floating oil cylinder for driving the first front axle assembly to swing; the universal chassis is further provided with two front axle side shaft holes which are symmetrically arranged on the left and right sides of the front axle intermediate shaft hole; the first floating oil cylinder is arranged in two and corresponds to the two front axle side shaft holes one by one, the base end of each first floating oil cylinder is hingedly connected in the corresponding front axle side shaft hole, and the output end of each first floating oil cylinder is hingedly connected to the first front axle assembly.
[0008] Preferably, the universal chassis is further provided with a rear axle intermediate shaft hole and two rear axle side shaft holes which are symmetrically arranged on the left and right sides of the rear axle intermediate shaft hole; the first rear axle assembly is provided with a second shaft pin and two third shaft pins, the second shaft pin is fixedly inserted into the rear axle intermediate shaft hole, and the two third shaft pins are fixedly inserted into the two rear axle side shaft holes, respectively.
[0009] Preferably, the universal chassis is further provided with a front axle intermediate shaft hole and two front axle side shaft holes which are symmetrically arranged on the left and right sides of the front axle intermediate shaft hole; the front axle connecting frame is rotatably connected with a fourth shaft pin and two fifth shaft pins, the fourth shaft pin is fixedly inserted into the front axle intermediate shaft hole, and the two fifth shaft pins are fixedly inserted into the two front axle side shaft holes, respectively.
[0010] Preferably, the front axle connecting frame is further provided with at least one second floating oil cylinder for driving the second front axle assembly to swing; the front axle connecting frame is further provided with two symmetrically arranged lugs; the second floating oil cylinder is arranged in two, the second front axle assembly is fixedly provided with two oil cylinder bases, the base end of each second floating oil cylinder is hingedly connected to the two lugs, and the output end of each second floating oil cylinder is hingedly connected to the two oil cylinder bases.
[0011] Preferably, the universal chassis is further provided with a rear axle intermediate shaft hole and two rear axle side shaft holes which are symmetrically arranged on the left and right sides of the rear axle intermediate shaft hole; the rear axle connecting frame is provided with a sixth shaft pin and two seventh shaft pins, the sixth shaft pin is fixedly inserted into the rear axle intermediate shaft hole, and the two seventh shaft pins are fixedly inserted into the two rear axle side shaft holes, respectively.
[0012] Preferably, the universal chassis is further provided with a motor avoiding groove.
[0013] The above-mentioned at least one technical solution adopted by the embodiment of the present application can achieve the following beneficial effects: By canceling two sets of independent chassis corresponding to the original split and integrated drive axle, the universal chassis is adapted to two kinds of drive axles, and the chassis design, manufacturing and inventory costs are reduced. For the original split drive axle, the first embedded groove and the second embedded groove are designed to embed the first drive front axle and the first drive rear axle in the universal chassis, so that the chassis height can be reduced. For the original integrated drive axle, the design of the front axle connecting frame and the rear axle connecting frame not only realizes universal assembly, but also increases the height of the universal chassis to adapt to the high chassis structure necessary for the integrated drive axle. BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. In the drawings: Figure 1 Schematic diagram of the three-dimensional structure of the universal chassis of the present application Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the universal chassis of the present application Figure 2 ; Figure 3 Schematic diagram of the three-dimensional structure of the split drive axle of the present application Figure 4 Schematic diagram of the three-dimensional structure of the split drive axle of the present application Figure 5 Schematic diagram of the three-dimensional structure of the split drive axle of the present application Figure 4 ; Figure 6 Schematic diagram of the three-dimensional structure of the split drive axle of the present application Figure 4 ; Figure 7 Schematic diagram of the three-dimensional structure of the integrated drive axle of the present application Figure 8 Schematic diagram of the three-dimensional structure of the integrated drive axle of the present application Figure 9 Schematic diagram of the three-dimensional structure of the integrated drive axle of the present application Figure 8 ; Figure 10 Schematic diagram of the three-dimensional structure of the integrated drive axle of the present application Figure 8 ; Figure 11 Schematic diagram of the three-dimensional structure of the front axle connecting frame of the present application Figure 12 Schematic diagram of the three-dimensional structure of the rear axle connecting frame of the present application
[0015] Reference signs 1 - universal chassis; 11 - first embedded groove; 12 - second embedded groove; 13 - motor avoiding groove; 14 - front axle middle shaft hole; 15 - front axle side shaft hole; 16 - rear axle middle shaft hole; 17 - rear axle side shaft hole; 2 - first front axle assembly; 21 - first axle pin; 3 - first rear axle assembly; 31 - second axle pin; 32 - third axle pin; 4 - second front axle assembly; 41 - oil cylinder base; 5 - second rear axle assembly; 6 - front axle connecting frame; 61 - fourth axle pin; 62 - fifth axle pin; 63 - lug; 7 - rear axle connecting frame; 71 - sixth axle pin; 72 - seventh axle pin; 8 - first floating oil cylinder; 9 - second floating oil cylinder. DETAILED DESCRIPTION
[0016] To further clarify the technical means and effects taken by the present application to achieve the predetermined object of the application, the specific embodiments, structures, features and effects thereof according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.
[0017] The technical solutions provided by the embodiments of the present application are described in detail below in combination with the drawings.
[0018] The drive axle of the arm-type aerial work platform mainly has two forms, one is a split type drive axle: including a split type front axle assembly, a rear axle welded on the chassis, a drive motor and a walking reduction machine and other parts relatively independently installed on the chassis; the other is an integrated drive axle: including a front axle, a rear axle, a transmission shaft, a drive motor, a walking reduction machine and other parts integrated together.
[0019] Referring to Figures 1 to 12 The present application provides a universal chassis, which is installed on a first front axle assembly 2 and a first rear axle assembly 3 (the first front axle assembly 2 and the first rear axle assembly 3 are part of the structure of the split type drive axle), or installed on a second front axle assembly 4 and a second rear axle assembly 5 (the second front axle assembly 4 and the second rear axle assembly 5 are part of the structure of the integrated drive axle); the universal chassis 1 has a first embedded groove 11 on the front side thereof, and a second embedded groove 12 on the rear side thereof; When the universal chassis 1 is installed on the first front axle assembly 2 and the first rear axle assembly 3, the universal chassis 1 is located above the first front axle assembly 2 and the first rear axle assembly 3, and the first front axle assembly 2 is at least partially embedded in the first embedded groove 11 and rotationally connected in the first embedded groove 11 to realize left and right swinging of the first front axle assembly 2 relative to the universal chassis 1, and the first rear axle assembly 3 is at least partially embedded in the second embedded groove 12 and fixedly connected therewith; The front axle connecting frame 6 is installed above the second front axle assembly 4, and the rear axle connecting frame 7 is installed above the second rear axle assembly 5. When the universal chassis 1 is installed on the second front axle assembly 4 and the second rear axle assembly 5, the universal chassis 1 is above the front axle connecting frame 6 and the rear axle connecting frame 7, and the front axle connecting frame 6 is at least partially embedded in the first embedded slot 11 and fixedly connected thereto. The front axle connecting frame 6 is rotatably connected to the second front axle assembly 4 to realize the left and right swinging of the second front axle assembly 4 relative to the front axle connecting frame 6. The rear axle connecting frame 7 is at least partially embedded in the second embedded slot 12 and fixedly connected thereto.
[0020] In the embodiment, when the universal chassis 1 is adapted to the split drive axle, the split front axle part (i.e. the first front axle assembly 2) is embedded in the first embedded slot 11 and swings left and right relative to the universal chassis 1 through the rotary connection. The split rear axle part (i.e. the first rear axle assembly 3) is embedded in the second embedded slot 12 and fixedly connected to the universal chassis 1.
[0021] When adapted to the integrated drive axle, the second front axle assembly 4 is indirectly connected to the universal chassis 1 through the front axle connecting frame 6. The front axle connecting frame 6 is embedded in the first embedded slot 11 and fixedly connected. The front axle connecting frame 6 is rotatably connected to the second front axle assembly 4 to realize the left and right swinging of the second front axle assembly 4 relative to the front axle connecting frame 6. The second rear axle assembly 5 is embedded in the second embedded slot 12 through the rear axle connecting frame 7 and fixedly connected.
[0022] In summary, by canceling the two sets of independent chassis corresponding to the original split and integrated drive axles, the universal chassis 1 is adapted to the two types of drive axles, reducing the chassis design, manufacturing and inventory costs. For the original split drive axle, the first embedded slot 11 and the second embedded slot 12 are designed to embed the first drive front axle and the first drive rear axle part in the universal chassis 1, thereby reducing the chassis height. For the original integrated drive axle, the design of the front axle connecting frame 6 and the rear axle connecting frame 7 not only realizes universal assembly, but also increases the height of the universal chassis 1 to adapt to the high chassis structure necessary for the integrated drive axle.
[0023] In some practical applications, refer to Figures 2 to 6As shown, the universal chassis 1 is further provided with a front axle intermediate shaft hole 14; the first front axle assembly 2 is rotatably connected with a first shaft pin 21, which is rotatably inserted into the front axle intermediate shaft hole 14. The universal chassis 1 is further provided with at least one first floating oil cylinder 8 for driving the first front axle assembly 2 to swing; the universal chassis 1 is further provided with two front axle side shaft holes 15 which are symmetrically located on the left and right sides of the front axle intermediate shaft hole 14; the first floating oil cylinder 8 is provided with two and corresponds to the two front axle side shaft holes 15 respectively, the base end of each first floating oil cylinder 8 is hinged in the corresponding front axle side shaft hole 15, and the output end of each first floating oil cylinder 8 is hinged on the first front axle assembly 2. Specifically, the universal chassis 1 is further provided with a rear axle intermediate shaft hole 16 and two rear axle side shaft holes 17 which are symmetrically distributed on both sides of the rear axle intermediate shaft hole 16, and the first rear axle assembly 3 is provided with a second shaft pin 31 and two third shaft pins 32, the second shaft pin 31 is fixedly inserted into the rear axle intermediate shaft hole 16, and the two third shaft pins 32 are respectively fixedly inserted into the two rear axle side shaft holes 17.
[0024] In this embodiment, the front side first embedded groove 11 and the rear side second embedded groove 12 provide a unified installation structure for two kinds of drive axles, one is direct connection, and the other is through the front axle connecting frame 6 and the rear axle connecting frame 7. The two modes adapt to the structural characteristics of different drive axles.
[0025] Split drive axle adaptation: the first front axle assembly 2 is embedded in the first embedded groove 11, and the front axle intermediate shaft hole 14 and the first shaft pin 21 form a rotating fulcrum, and the two sides of the front axle side shaft hole 15 are hinged with the double first floating oil cylinder 8 to drive the first front axle assembly 2 to swing left and right, which meets the needs of steering and terrain adaptation. The first rear axle assembly 3 is embedded in the second embedded groove 12, and the second shaft pin 31 and the two third shaft pins 32 of the first rear axle assembly 3 are respectively inserted into the rear axle intermediate shaft hole 16 and the two rear axle side shaft holes 17, forming a "three-point positioning" fixed structure, replacing the traditional welding, ensuring the connection strength, and also simplifying the assembly.
[0026] Integrated drive axle adaptation: the integrated front axle (i.e. the second front axle assembly 4) is embedded in the first embedded groove 11 through the front axle connecting frame 6 and fixed, the front axle connecting frame 6 is rotatably connected with the second front axle assembly 4, realizing the left and right swing of the second front axle assembly 4 relative to the universal chassis 1. The integrated rear axle (i.e. the second rear axle assembly 5) is embedded in the second embedded groove 12 through the rear axle connecting frame 7 and fixed, forming a stable support.
[0027] The split front axle is driven by double floating oil cylinders, maintaining the original flexible swing characteristics while maintaining the original low chassis structure; the integrated front axle is connected through the front axle connecting frame 6 and the rear axle connecting frame 7 to realize the swing function while maintaining the original high chassis structure.
[0028] Referring to Figure 2 , Figures 7 to 12 In other practical applications, the structure of the universal chassis 1 in the above embodiments is used, i.e., the front axle middle shaft hole 14, the two front axle side shaft holes 15 symmetrically located on the left and right sides of the front axle middle shaft hole 14, the rear axle middle shaft hole 16, and the two rear axle side shaft holes 17 symmetrically distributed on the left and right sides of the rear axle middle shaft hole 16.
[0029] The front axle connecting frame 6 is rotatably connected with a fourth shaft pin 61 fixedly inserted into the front axle middle shaft hole 14 and two fifth shaft pins 62 fixedly inserted into the two front axle side shaft holes 15. At least one second floating oil cylinder 9 is installed on the front axle connecting frame 6 to drive the second front axle assembly 4 to swing. The front axle connecting frame 6 is provided with two symmetrically distributed lugs 63. Two second floating oil cylinders 9 are arranged, and the two oil cylinder bases 41 are fixedly installed on the second front axle assembly 4. The base ends of the two second floating oil cylinders 9 are respectively hinged to the two lugs 63, and the output ends of the two second floating oil cylinders 9 are respectively hinged to the two oil cylinder bases 41. The rear axle connecting frame 7 is provided with a sixth shaft pin 71 fixedly inserted into the rear axle middle shaft hole 16 and two seventh shaft pins 72 fixedly inserted into the two rear axle side shaft holes 17.
[0030] In this embodiment, the front axle connecting frame 6 and the rear axle connecting frame 7 designed for the integrated drive axle are adaptively installed on the universal chassis 1 based shaft hole structure (the front axle middle shaft hole 14, the front axle side shaft hole 15, the rear axle middle shaft hole 16, and the rear axle side shaft hole 17): The front axle connecting frame 6 is rigidly fixed with the universal chassis 1 through the fourth shaft pin 61 (inserted into the front axle middle shaft hole 14) and the two fifth shaft pins 62 (inserted into the front axle side shaft holes 15), ensuring the stability of the overall structure. The symmetrically distributed lugs 63 are arranged on the two sides of the front axle connecting frame 6, and the two second floating oil cylinders 9 are hinged. The output ends of the second floating oil cylinders 9 are hinged to the oil cylinder bases 41 of the integrated front axle, and the integrated front axle is driven to swing left and right through the extension and contraction of the two second floating oil cylinders 9, meeting the requirements of steering and terrain adaptation. The rear axle connecting frame 7 is fixed with the universal chassis 1 through the sixth shaft pin 71 (inserted into the rear axle middle shaft hole 16) and the two seventh shaft pins 72 (inserted into the rear axle side shaft holes 17) in a "three-point positioning" manner, ensuring the load bearing and driving stability.
[0031] In other practical applications, the universal chassis 1 is further provided with a motor avoiding groove 13.
[0032] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.
Claims
1. A universal chassis, characterized in that, The universal chassis (1) is installed on the first front axle assembly (2) and the first rear axle assembly (3), or installed on the second front axle assembly (4) and the second rear axle assembly (5); the universal chassis (1) has a first embedded groove (11) on the front side and a second embedded groove (12) on the rear side; When the universal chassis (1) is installed on the first front axle assembly (2) and the first rear axle assembly (3), the universal chassis (1) is located above the first front axle assembly (2) and the first rear axle assembly (3), and the first front axle assembly (2) is at least partially embedded in the first embedded groove (11) and rotatably connected in the first embedded groove (11), so as to realize the left and right swinging of the first front axle assembly (2) relative to the universal chassis (1), and the first rear axle assembly (3) is at least partially embedded in the second embedded groove (12) and fixedly connected therewith; The second front axle assembly (4) is provided with a front axle connecting frame (6) above, and the second rear axle assembly (5) is provided with a rear axle connecting frame (7) above; when the universal chassis (1) is installed on the second front axle assembly (4) and the second rear axle assembly (5), the universal chassis (1) is located above the front axle connecting frame (6) and the rear axle connecting frame (7), and the front axle connecting frame (6) is at least partially embedded in the first embedded groove (11) and fixedly connected therewith, and the front axle connecting frame (6) is rotatably connected with the second front axle assembly (4), so as to realize the left and right swinging of the second front axle assembly (4) relative to the front axle connecting frame (6), and the rear axle connecting frame (7) is at least partially embedded in the second embedded groove (12) and fixedly connected therewith.
2. A universal chassis as claimed in claim 1, wherein, The universal chassis (1) is further provided with a front axle intermediate shaft hole (14); the first front axle assembly (2) is rotatably connected with a first shaft pin (21), and the first shaft pin (21) is rotatably inserted into the front axle intermediate shaft hole (14).
3. A universal chassis as claimed in claim 2, wherein, The universal chassis (1) is further provided with at least one first floating oil cylinder (8) for driving the first front axle assembly (2) to swing; the universal chassis is further provided with two front axle side shaft holes (15) which are located on the left and right sides of the front axle intermediate shaft hole (14) and are symmetrically distributed; the first floating oil cylinder (8) is provided with two and corresponds to the two front axle side shaft holes (15) one by one, and the base end of each first floating oil cylinder (8) is hinged in the corresponding front axle side shaft hole (15), and the output end of each first floating oil cylinder (8) is hinged on the first front axle assembly (2).
4. A universal chassis according to claim 1 or 3, characterized in that The universal chassis (1) is further provided with a rear axle intermediate shaft hole (16) and two rear axle side shaft holes (17) which are symmetrically distributed on the left and right sides of the rear axle intermediate shaft hole (16), and the first rear axle assembly (3) is provided with a second shaft pin (31) and two third shaft pins (32), the second shaft pin (31) is fixedly inserted into the rear axle intermediate shaft hole (16), and the two third shaft pins (32) are respectively fixedly inserted into the two rear axle side shaft holes (17).
5. A universal chassis as claimed in claim 1, wherein, The universal chassis (1) is further provided with a front axle intermediate shaft hole (14) and two front axle side shaft holes (15) which are symmetrically arranged on the left and right sides of the front axle intermediate shaft hole (14); the front axle connecting frame (6) is rotatably connected with a fourth shaft pin (61) and two fifth shaft pins (62), the fourth shaft pin (61) is fixedly inserted into the front axle intermediate shaft hole (14), and the two fifth shaft pins (62) are respectively fixedly inserted into the two front axle side shaft holes (15).
6. A universal chassis as claimed in claim 5, wherein, The front axle connecting frame (6) is further provided with two symmetrically distributed lugs (63); two second floating oil cylinders (9) are arranged on the front axle connecting frame (6) and used to drive the second front axle assembly (4) to swing; the second front axle assembly (4) is fixedly provided with two oil cylinder bases (41); the base ends of the two second floating oil cylinders (9) are respectively hinged to the two lugs (63), and the output ends of the two second floating oil cylinders (9) are respectively hinged to the two oil cylinder bases (41).
7. A universal chassis as claimed in claim 1, wherein, The universal chassis (1) is further provided with a rear axle intermediate shaft hole (16) and two rear axle side shaft holes (17) which are symmetrically arranged on the left and right sides of the rear axle intermediate shaft hole (16); the rear axle connecting frame (7) is provided with a sixth shaft pin (71) and two seventh shaft pins (72), the sixth shaft pin (71) is fixedly inserted into the rear axle intermediate shaft hole (16), and the two seventh shaft pins (72) are respectively fixedly inserted into the two rear axle side shaft holes (17).
8. A universal chassis as claimed in claim 1, wherein, The universal chassis (1) is further provided with a motor avoiding groove (13).