A connecting device for a special vehicle's load-bearing module and mounting module

Abstract

The present invention provides a connecting device for a special vehicle's carrying module and loading module, which includes a guiding module, a positioning module, and a connecting module. It combines the functions of guiding, positioning, and connecting, and can ensure the rapid positioning and reliable connection of the carrying module and the loading module. The guide rail groove provided on the carrying module cooperates with the guide rail provided on the loading module to facilitate the loading module to be introduced into the carrying module; the positioning modules provided on the top deck of the carrying module and the horizontal deck of the loading module facilitate the rapid positioning of the carrying module and the loading module during docking; the connecting module provided on the bottom deck of the carrying module and the bottom deck of the loading module can realize the connection between the carrying module and the loading module, and fix the carrying module and the loading module as a whole. The guiding module, the positioning module, and the connecting module are all completed by modularized integral processing, which can improve the accuracy of guiding, positioning, and connecting.

Description

Technical Field

[0001] The present invention belongs to the technical field of special vehicles, and particularly relates to a connecting device for a load-bearing module and a mounting module of a special vehicle. Background Art

[0002] The body subsystem of a special vehicle mainly consists of a load-bearing module and a mounting module. The load-bearing module is located at the lower part of the whole vehicle and is the main load-bearing component of the vehicle. The mounting module is located at the upper part of the whole vehicle and can be replaced with a mission module according to mission requirements. In view of the particularity of the operation of hydrogen fuel cells, to ensure the safety of the personnel in the vehicle, the load-bearing module and the mounting module are two independent closed cabin structures respectively. The two modules are mounted in an inward concave "return" shape structure. Four guide rail grooves are used on the side of the "return" shape structure for guiding the installation of the two modules. At the connection plane of the load-bearing module and the mounting module, circumferential four-point mechanical positioning and fixed connection are adopted.

[0003] The load-bearing module and the mounting module are of a split structure, and the connecting components between them have characteristics such as complex stress and difficult positioning. Therefore, the connection between the load-bearing module and the mounting module is a key technology. To ensure rapid positioning and reliable connection between the load-bearing module and the mounting module, it is necessary to design a guiding, positioning, and connecting device between the load-bearing module and the mounting module. The guiding device and the positioning device are interrelated and restricted, and the accuracy and reliability of guiding, connecting, and positioning are the key. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] The present invention provides a connecting device for a load-bearing module and a mounting module of a special vehicle to solve the technical problems of rapid positioning and reliable connection between the load-bearing module and the mounting module.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the present invention provides a connecting device for a load-bearing module and a mounting module of a special vehicle. The connecting device includes a guiding module, a positioning module, and a connecting module. Among them,

[0008] The guiding module includes a guide rail and a guide rail groove. Among them, the guide rail groove is fixed on the "return" shaped frame of the load-bearing module; the guide rail is fixed on the truss-type T-shaped frame of the mounting module, and the guide rail and the guide rail groove cooperate with each other to facilitate the mounting module to be introduced into the load-bearing module;

[0009] The positioning module is arranged on the top deck of the load-bearing module, and a positioning groove corresponding to the position of the positioning module is arranged on the horizontal deck of the mounting module. After the guide rail of the mounting module is introduced into the guide rail groove of the load-bearing module, the positioning module cooperates with the positioning groove to facilitate the positioning of the load-bearing module and the mounting module;

[0010] The connection module includes a lower solder block, an upper solder block, a gasket, a fixed shaft, a slotted nut, and a rectangular pin; among them, the lower solder block has a hollow cylindrical structure, a positioning stop is provided on the outer periphery of the bottom of the cylinder, and a square groove is provided on the inner side of the bottom of the cylinder; the upper end of the fixed shaft is provided with an external thread, a radial pin hole is provided above the external thread, and the bottom of the fixed shaft is provided with a square stop. The fixed shaft is inserted into the hollow cylinder of the lower solder block from the bottom of the lower solder block in an interference fit manner. The square stop of the fixed shaft cooperates with the square groove of the lower solder block to prevent relative rotation between the fixed shaft and the lower solder block; the combined lower solder block and fixed shaft pass through the lower solder block positioning through hole provided on the bottom deck of the carrying module and are welded and fixed on the bottom deck of the carrying module; the upper solder block has a hollow cylindrical structure, and the upper solder block is welded and fixed on the bottom deck of the carrying module through the upper solder block positioning through hole provided on the bottom deck of the carrying module; the position of the upper solder block positioning through hole corresponds to that of the lower solder block positioning through hole; the carrying module and the carrying module are guided by the guide rail and the guide rail groove, and after being positioned by the positioning module, the upper solder block is aligned and fitted with the fixed shaft. The external thread part of the fixed shaft passes through the upper solder block, and the slotted nut is locked by cooperating with the external thread of the fixed shaft through the gasket, fastening the carrying module and the carrying module into one body; the rectangular pin passes through the pin hole at the external thread of the fixed shaft to play a role in fastening and preventing loosening of the slotted nut.

[0011] Further, the guide rail grooves are fixed on the left and right sides inside the "return" - shaped frame of the carrying module by welding, with a total of 4 guide rail grooves; the guide rails are fixed on the left and right sides outside the truss - type T - shaped frame of the carrying module by welding, with a total of 4 guide rails.

[0012] Further, the lower solder block and the upper solder block are made of 7B52 material.

[0013] Further, the fixed shaft is made of 304 stainless steel material.

[0014] (III) Beneficial effects

[0015] The present invention provides a connection device for a carrying module and a carrying module of a special vehicle, including a guiding module, a positioning module, and a connection module, which has functions of guiding, positioning, and connecting, and can ensure rapid positioning and reliable connection of the carrying module and the carrying module. The guide rail grooves provided on the carrying module cooperate with the guide rails provided on the carrying module, facilitating the carrying module to be introduced into the carrying module; the positioning modules provided on the top deck of the carrying module and the horizontal deck of the carrying module facilitate the rapid positioning of the carrying module and the carrying module during docking; the connection module provided on the bottom deck of the carrying module and the bottom deck of the carrying module can realize the connection between the carrying module and the carrying module, fixing the carrying module and the carrying module into one body. The guiding module, the positioning module, and the connection module are all completed by combined integral processing, which can improve the accuracy of guiding, positioning, and connecting. Description of the drawings

[0016] Figure 13D schematic diagram of the bearing module in the embodiment of the present invention;

[0017] Figure 2 3D schematic diagram of the "hui"-shaped frame of the bearing module in the embodiment of the present invention;

[0018] Figure 3 3D schematic diagram of the loading module in the embodiment of the present invention;

[0019] Figure 4 Bottom view of the loading module in the embodiment of the present invention;

[0020] Figure 5 3D schematic diagram of the truss-type T-shaped frame of the loading module in the embodiment of the present invention;

[0021] Figure 6 3D schematic diagram of the guiding module in the embodiment of the present invention;

[0022] Figure 7 3D half-sectional schematic diagram of the connecting module in the embodiment of the present invention;

[0023] Figure 8 3D exploded view of the connecting module in the embodiment of the present invention. Detailed implementation manners

[0024] To make the objectives, contents and advantages of the present invention clearer, the following further describes in detail the specific implementation manners of the present invention with reference to the drawings and embodiments.

[0025] This embodiment provides a connecting device for a bearing module and a loading module of a special vehicle. The bearing module and the loading module are two major modules of the special vehicle. Among them, the bearing module is located at the lower part of the whole vehicle and is the main load-bearing component of the vehicle; the loading module is located at the upper part of the whole vehicle and can be replaced with a mission module according to mission requirements. The bearing module and the loading module are respectively two independent enclosed cabin structures. As Figure 1 and 2 shown, a "hui"-shaped frame is provided at the lower part of the top deck 4 of the bearing module, which has the characteristics of anti-twisting, anti-stretching and large load-bearing. As Figures 3 - 5 shown, a truss-type T-shaped frame is provided at the lower part of the horizontal deck 5 of the loading module, which provides a certain degree of protection for personnel and equipment and realizes the safety protection of the compartmentalized power source.

[0026] The connecting device includes a guiding module 1, a positioning module 2 and a connecting module 3. Among them, the guiding module 1 plays a guiding role during the disassembly and installation of the bearing module and the loading module, the positioning module 2 is used for quick positioning when the loading module is docked after being introduced into the bearing module, and the connecting module 3 is used to fasten the bearing module and the loading module into one body. This connecting device can achieve the effects of guiding, positioning, fixing and anti-loosening.

[0027] As shown Figure 6 in the figure, the guiding module includes a guide rail 11 and a guide rail groove 12. Among them, the guide rail groove 12 is fixed to the left and right sides inside the "hui"-shaped frame of the bearing module by welding, with a total of 4 guide rail grooves. The guide rail 11 is fixed to the left and right sides outside the truss-type T-shaped frame of the carrying module by welding, with a total of 4 guide rails. The guide rail 11 and the guide rail groove 12 cooperate with each other to facilitate the smooth introduction of the carrying module into the bearing module.

[0028] The positioning module 2 is arranged at the four corners of the top deck 4 of the bearing module. Positioning grooves 6 corresponding to the positions of the positioning module 2 are arranged at the four corners of the horizontal deck 5 of the carrying module. After the guide rail 11 of the carrying module is introduced into the guide rail groove 12 of the bearing module, the positioning module 2 cooperates with the positioning groove 6, and the bearing module and the carrying module can be quickly positioned when docking.

[0029] The connecting module 3 includes a lower welding block 31, an upper welding block 32, a gasket 33, a fixed shaft 34, a slotted nut 35 and a rectangular pin 36, as shown Figure 7 and 8 in the figure. Among them, the lower welding block 31 is made of 7B52 material and has a hollow cylindrical structure. A positioning stop is arranged on the outer periphery of the bottom of the cylinder, and a square groove is arranged on the inner side of the bottom of the cylinder. The fixed shaft 34 is made of 304 stainless steel material. An external thread is arranged at the upper end, a radial pin hole is arranged above the external thread, and a square stop is arranged at the bottom of the fixed shaft 34. The fixed shaft 34 is inserted into the hollow cylinder of the lower welding block 31 from the bottom of the lower welding block 31 in an interference fit manner. The square stop of the fixed shaft 34 cooperates with the square groove of the lower welding block 31 to prevent relative rotation between the fixed shaft 34 and the lower welding block 31. The combined lower welding block 31 and fixed shaft 34 pass through the lower welding block positioning through holes arranged at the four corners of the first bottom deck 7 of the bearing module and are welded and fixed to the first bottom deck 7. The upper welding block 32 is made of 7B52 material and has a hollow cylindrical structure. The upper welding block 32 is welded and fixed to the second bottom deck 8 through the upper welding block positioning through holes arranged at the four corners of the second bottom deck 8 of the carrying module. The positions of the upper welding block positioning through holes correspond to those of the lower welding block positioning through holes.

[0030] The bearing module and the carrying module are guided by the guide rail 11 and the guide rail groove 12. After being positioned by the positioning module 2, the upper welding block 32 is aligned and cooperated with the fixed shaft 34. The external thread part of the fixed shaft 34 passes through the upper welding block 32, and the slotted nut 35 is locked in cooperation with the external thread of the fixed shaft 34 through the gasket 33, fastening the bearing module and the carrying module into one body. The rectangular pin 36 passes through the pin hole at the external thread of the fixed shaft 34 to play a role in fastening and loosening prevention for the slotted nut 35. The rectangular pin 36 is convenient and quick to disassemble, and can prevent the nut from failing due to vibration during the movement of the vehicle.

[0031] When selecting each connecting piece, the stress condition of the impact load is determined through calculation, and the specifications of the connecting piece are determined by referring to various factors such as the connection structure of other mature products, and through finite element calculation, the usage requirements are met. Whether the strength of the fixed shaft meets the requirements of the dynamic load needs to meet two conditions: the pre-tightening force of the axial load and the working load:

[0032] (1) The maximum tensile stress of the fixed shaft is less than or equal to the required stress:

[0033]

[0034] Among them: σ s Material yield strength; F is the axial load; C b is the bolt stiffness; C m is the stiffness of the connected parts. The pre-tightening force of M36 is taken as 340 KN, the bottom diameter of the thread d1 = 31.67 mm. Assuming the material yield strength is 215 MPa, the materials of the connecting piece and the connected parts are the same.

[0035] The maximum tensile stress obtained is:

[0036]

[0037] The maximum allowable stress is:

[0038]

[0039] Therefore, it meets:

[0040] σ ≤ [σ]

[0041] (2) The stress amplitude is less than or equal to the allowable stress amplitude:

[0042]

[0043] Among them:

[0044]

[0045] Among them: ε is the size coefficient, taken as 0.64 for M36; K t is the thread manufacturing process coefficient, taken as 1 for cut threads; K u is the force unevenness coefficient, taken as 0.8; K σ is the notch stress concentration coefficient, taken as 3; σ -1t is the compressive fatigue limit of the material, taken as 300; S a is the safety factor, taken as 1.2.

[0046] The stress amplitude obtained is:

[0047]

[0048] The allowable stress amplitude is:

[0049]

[0050] Therefore, it satisfies:

[0051] σ a ≤ [σ a

[0052] It can be obtained through calculation that the dynamic load requirements are met.

[0053] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.​

Claims

1. A connecting device for a special vehicle's load-bearing module and carrying module, characterized in that, The connecting device includes a guiding module, a positioning module, and a connecting module; among them, The guiding module includes a guide rail and a guide rail groove; among them, the guide rail groove is fixed on the "return" - shaped frame of the bearing module; the guide rail is fixed on the truss - type T - shaped frame of the carrying module, and the guide rail and the guide rail groove cooperate with each other to facilitate the carrying module to be introduced into the bearing module; The positioning module is arranged on the top deck of the bearing module, and positioning grooves corresponding to the position of the positioning module are arranged on the horizontal deck of the carrying module. After the guide rail of the carrying module is introduced into the guide rail groove of the bearing module, the positioning module cooperates with the positioning grooves to facilitate the positioning of the bearing module and the carrying module; The connecting module includes a lower welding block, an upper welding block, a gasket, a fixed shaft, a slotted nut, and a rectangular pin; among them, the lower welding block has a hollow cylindrical structure, a positioning stop is arranged on the outer circumference of the bottom of the cylinder, and a square groove is arranged on the inner side of the bottom of the cylinder; the upper end of the fixed shaft is provided with an external thread, a radial pin hole is arranged on the upper part of the external thread, and a square stop is arranged at the bottom of the fixed shaft. The fixed shaft is inserted into the hollow cylinder of the lower welding block from the bottom of the lower welding block in an interference - fit manner, and the square stop of the fixed shaft cooperates with the square groove of the lower welding block to prevent relative rotation between the fixed shaft and the lower welding block; the combined lower welding block and fixed shaft pass through the lower - welding - block positioning through - hole arranged on the bottom deck of the bearing module and are welded and fixed on the bottom deck of the bearing module; the upper welding block has a hollow cylindrical structure, and the upper welding block is welded and fixed on the bottom deck of the carrying module through the upper - welding - block positioning through - hole arranged on the bottom deck of the carrying module; the position of the upper - welding - block positioning through - hole corresponds to that of the lower - welding - block positioning through - hole; after the bearing module and the carrying module are guided by the guide rail and the guide rail groove and positioned by the positioning module, the upper welding block is aligned and cooperated with the fixed shaft. The external - thread part of the fixed shaft passes through the upper welding block, and the slotted nut is locked in cooperation with the external thread of the fixed shaft through the gasket to fasten the bearing module and the carrying module into one body; the rectangular pin passes through the pin hole at the external - thread part of the fixed shaft to play a role in fastening and preventing loosening of the slotted nut; the lower welding block and the upper welding block are made of 7B52 material; the fixed shaft is made of 304 stainless - steel material.

2. The connecting device according to claim 1, characterized in that, The guide rail grooves are fixed on the left and right sides inside the "return" - shaped frame of the bearing module by welding, with a total of 4 guide rail grooves; the guide rails are fixed on the left and right sides outside the truss - type T - shaped frame of the carrying module by welding, with a total of 4 guide rails.

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