Full-bearing frame tool and method for camping type motor bus

Abstract

The invention provides a tool and a method for a full-bearing frame of a camping type motor bus, relates to the field of frame tools, and aims to solve the problem that the precision of the full-bearing frame of the camping type motor bus is difficult to meet the requirement of mounting an expansion mechanism after the construction of the full-bearing frame of the camping type motor bus at present. The clamping mechanisms can guarantee the planeness precision of the expansion mechanism mounting assemblies, and the multiple sets of clamping mechanisms can clamp the vehicle frame correspondingly, so that the parallelism precision of the same set of expansion mechanism mounting assemblies is guaranteed, the height difference precision of the full-bearing vehicle frame and the expansion mechanism mounting assemblies is guaranteed, thermal deformation in the construction process is resisted, and the construction quality is improved. The second positioning mechanism is combined to assist in arrangement and positioning of the frame, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of vehicle frame tooling, and in particular to a full-load vehicle frame tooling and a method for a camping-type bus. Background Art

[0002] In the bus manufacturing industry, the full-load frame is the lowest rigid component of the bus body-in-white. Compared with the traditional frame (chassis), its characteristic is that the body structure bears most of the load, rather than just the traditional frame (chassis) supporting the weight of the entire vehicle to disperse and carry the load of the vehicle, including the weight of passengers and cargo. It has many functions such as supporting and assembling the engine, transmission system, suspension system, etc., and is an important component when the six pieces of the bus body-in-white are assembled. The difference between the full-load frame of the camping bus and the full-load frame of conventional buses and medium and large buses is that it adds an expansion mechanism installation component. The expansion mechanism refers to a mechanical device that can achieve specific movement or shape changes, and its characteristic is that it can be expanded from a compact state to a larger working state to adapt to different usage requirements. The camping bus is a large bus equipped with an expansion mechanism as a driving component, which can expand the activity cabin to a special seat that can be rotated and laid flat for people to camp under the required use conditions. The full-load frame of the camping-type coach is welded from the full-load frame and the expansion mechanism mounting components. The same set of expansion mechanisms is fixedly installed on the slide rails by two-part mounting components. The smoothness of its operation and the accuracy of its assembly are limited by the parallelism of the same set of expansion mechanism mounting components and the relative position accuracy of the bolt fixing points.

[0003] A Chinese patent (publication number CN207344048U) discloses a full-load passenger car frame assembly jig, which includes a chassis, a plane rod positioning module on the frame, a frame longitudinal beam positioning module, a front axle mounting support positioning module, and a rear axle mounting support positioning module, etc. It is suitable for assembling different types of full-load passenger car frames. However, it is not suitable for the full-load frame of a camping-type bus. When welding the full-load frame of a camping-type bus, the prior art adopts the method of first constructing the full-load frame part and then welding the expansion mechanism installation assembly. Due to the requirements of pipeline layout, there is a certain height difference between the expansion mechanism installation assembly and the plane on the full-load frame. The full-load frame part is affected by the small restraint of the rectangular tube itself, and the thermal expansion coefficient of the metal material is large. It is not an ideal plane, which affects the pipeline space and further affects the parallelism accuracy requirements of the expansion mechanism in the same group. The relative position and size of the two installation components of the same expansion mechanism when welded to the full-load frame depends on the crossbeam span and longitudinal beam straightness of the full-load frame, and the corresponding accuracy of the full-load frame after construction is lower than the accuracy requirement of the expansion mechanism installation. The above problems lead to rework, repair, and low work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a full-load frame tooling and method for a camping-type bus in view of the defects of the prior art. When constructing the full-load frame, a support frame and a positioning assembly are used for positioning and restraint. The clamping mechanism can ensure the flatness accuracy of the expansion mechanism installation assembly. Multiple groups of clamping mechanisms can clamp the frame separately, thereby ensuring the parallelism accuracy of the expansion mechanism installation assembly in the same group, ensuring the height difference accuracy between the full-load frame and the expansion mechanism installation assembly, resisting thermal deformation during the construction process, and combining with a second positioning mechanism to assist in the placement and positioning of the frame, thereby improving processing efficiency.

[0005] The first object of the present invention is to provide a full-load frame tooling for a camping-type bus, which adopts the following scheme:

[0006] It includes a support frame and a positioning assembly. The top of the support frame forms a bearing surface for supporting the frame. The positioning assembly includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism and the second positioning mechanism are distributed separately. The first positioning mechanism includes a plurality of first positioning plates fixed to the bearing surface. A clamping mechanism is installed on the first positioning plate. The clamping mechanism includes a clamping part for accommodating and clamping the expansion mechanism mounting assembly on the frame, and all the clamping parts are controlled to be coplanar. The second positioning mechanism includes a plurality of second positioning plates dispersedly arranged on the bearing surface to maintain the relative position of the frame and the support frame.

[0007] Furthermore, a positioning pin is installed on the first positioning plate to cooperate with the expansion mechanism installation component on the frame.

[0008] Furthermore, each of the first positioning plates is respectively installed with a plurality of positioning pins.

[0009] Furthermore, a plurality of clamping mechanisms are installed on the first positioning plate, and the clamping parts formed by the plurality of clamping mechanisms are distributed at intervals.

[0010] Furthermore, a clamping portion is formed between the output end of the clamping mechanism and the first positioning plate.

[0011] Furthermore, the support frame includes a bottom frame and a top frame that are connected, and the top of the top frame serves as a bearing surface on which the positioning assembly is installed.

[0012] Furthermore, one end of the second positioning plate is fixed to the supporting frame, and the other end extends out of the bearing surface and is provided with a positioning groove.

[0013] Furthermore, the second positioning plate is located between two adjacent first positioning mechanisms or between the first positioning mechanism and the end of the supporting frame.

[0014] The second object of the present invention is to provide a working method of the full-load frame tooling of a camping-type bus as described in the first object, comprising:

[0015] The full load-bearing frame is inverted and placed on the load-bearing surface, and the expansion mechanism mounting components on the frame are arranged one by one correspondingly to the first positioning mechanism;

[0016] The expansion mechanism mounting assembly on the frame is clamped and fixed by the clamping mechanism of the first positioning mechanism, and other positions of the frame are matched with a plurality of second positioning plates to fix the relative positions of the frame and the support frame;

[0017] Processing of the frame and installation of accessory components.

[0018] Furthermore, the clamping mechanism clamps the frame, keeps the expansion mechanism mounting assembly on the frame in contact with the first positioning plate, corrects the flatness of the frame and resists shrinkage during frame welding.

[0019] Compared with the prior art, the present invention has the following advantages and positive effects:

[0020] (1) In view of the problem that the accuracy of the full-load frame of camping-type buses after construction is difficult to meet the requirements of installing the expansion mechanism, during the construction of the full-load frame, the support frame and positioning components are used for positioning and constraint, and all clamping parts are controlled to be coplanar. The clamping mechanism can ensure the flatness accuracy of the expansion mechanism installation components. Multiple groups of clamping mechanisms can clamp the frame separately, thereby ensuring the parallelism accuracy of the expansion mechanism installation components in the same group, ensuring the height difference accuracy between the full-load frame and the expansion mechanism installation components, resisting thermal deformation during the construction process, and combining with the second positioning mechanism to assist in the placement and positioning of the frame, thereby improving processing efficiency.

[0021] (2) The support frame includes a connected bottom frame and a top frame. The top of the top frame serves as a bearing surface for installing and positioning components. The bottom frame provides stability and support, while the top frame provides a flat bearing surface for installing and positioning the frame and its components. The synergy of the bottom frame and the top frame ensures the stability and reliability of the entire tooling structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 Schematic diagram of the full load-bearing frame in embodiments 1 and 2 of the present invention.

[0024] Figure 2 It is a schematic diagram of the full-load-bearing frame tooling of the camping-type bus in Examples 1 and 2 of the present invention.

[0025] Figure 3 It is a schematic diagram of the full-load-bearing frame in Embodiments 1 and 2 of the present invention being installed on the full-load-bearing frame tooling of a camping-type bus.

[0026] Figure 4 It is a schematic diagram of the partial structure of the full-load-bearing frame tooling of the camping-type bus in Examples 1 and 2 of the present invention.

[0027] Figure 5 Schematic diagram of the positioning pin in Examples 1 and 2 of the present invention.

[0028] Figure 6 It is a schematic diagram of the positioning plate of the expansion mechanism installation component in Examples 1 and 2 of the present invention.

[0029] Figure 7 Schematic diagram of the frame body positioning plate in embodiments 1 and 2 of the present invention.

[0030] Figure 8 Schematic diagram of the clamping mechanism in Examples 1 and 2 of the present invention.

[0031] Among them, 1. frame; 11. frame body; 12. expansion mechanism installation assembly; 2. tooling body; 21. first positioning plate; 22. clamping mechanism; 23. positioning pin; 24. second positioning plate; 25. bottom frame; 26. top frame. DETAILED DESCRIPTION

[0032] Example 1

[0033] In a typical embodiment of the present invention, Figure 1-Figure 8 As shown, a full-load frame tooling for a camping-type bus is provided.

[0034] In the production process of the full-load frame 1 of the camping type coach, due to the pipeline layout requirements, there is a height difference between the expansion mechanism installation component 12 and the upper plane of the full-load frame 1, which affects the pipeline space and the parallelism accuracy of the same group of expansion mechanisms; Figure 1 As shown, the full-load frame 1 is partially restrained by the rectangular tube itself, and the thermal expansion coefficient of the metal material is large, resulting in the accuracy after construction being lower than the accuracy requirement of the expansion mechanism installation; due to the above-mentioned accuracy problem, rework and repair are required, which reduces work efficiency. Based on this, this embodiment provides a full-load frame tooling for camping type buses, which uses a support frame and a positioning assembly (a first positioning mechanism and a second positioning mechanism) to position and constrain the full-load frame 1, ensure the stability of the frame 1 during the construction process, and improve the processing accuracy of the frame 1 to meet the production requirements of the full-load frame 1 of camping type buses.

[0035] like Figure 2 As shown, the tooling body 2 of the full-load frame tooling for camping buses includes a support frame and a positioning assembly. The top of the support frame forms a load-bearing surface, and the rigidity of the support frame is used to support the full-load frame 1 of the camping bus to be processed, so as to facilitate welding and installation of the frame 1 on the support frame. Figure 3As shown, the bearing surface is used to bear the frame 1 and provide a flat working plane.

[0036] The positioning assembly includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is used to clamp and position the expansion mechanism mounting assembly 12 of the frame 1. The first positioning mechanism includes a plurality of first positioning plates 21. The first positioning plates 21 are plates fixed to the bearing surface and are used to position and support the expansion mechanism mounting assembly 12 of the frame 1. The clamping mechanism 22 is installed on the first positioning plate 21 and includes a clamping part, which is used to accommodate and clamp the expansion mechanism mounting assembly 12 on the frame 1, and control all the clamping parts to be coplanar to ensure their position accuracy.

[0037] Since the position of the first positioning plate 21 is fixed relative to the support frame, after the clamping mechanism 22 on the first positioning plate 21 cooperates with the clamping expansion mechanism mounting assembly 12, the positions of multiple expansion mechanism mounting assemblies 12 on the frame 1 can be fixed, and the positions of multiple expansion mechanism mounting assemblies 12 and the support frame can be maintained, thereby resisting deformation caused during the processing of the frame 1, and being able to correct the frame 1 to ensure the shape and accuracy of each position on the frame 1.

[0038] Since the vehicle frame 1 includes a vehicle frame body 11 and an expansion mechanism mounting assembly 12 mounted on the vehicle frame body 11, in addition to the first positioning mechanism cooperating with the expansion mechanism mounting assembly 12 on the vehicle frame 1, the vehicle frame body 11 of the vehicle frame 1 is also positioned and constrained by the second positioning mechanism. The second positioning mechanism includes a second positioning plate 24, and a plurality of second positioning plates 24 are dispersedly arranged on the bearing surface, which can cooperate with the vehicle frame body 11 to maintain the relative position of the vehicle frame body 11 and the support frame, and provide additional positioning support.

[0039] like Figure 4 As shown, the clamping mechanism 22 can clamp the expansion mechanism installation assembly 12 on the frame 1 to ensure its flatness accuracy. At the same time, multiple groups of clamping mechanisms 22 can clamp the frame 1 respectively to ensure the parallelism accuracy of the expansion mechanism installation assembly 12 in the same group. Through precise positioning and clamping, the height difference accuracy between the full-load frame 1 and the expansion mechanism installation assembly 12 is guaranteed. The tooling structure can resist thermal deformation during construction to ensure the final accuracy of the frame 1. Combined with the second positioning mechanism to assist in the placement and positioning of the frame 1, rework and repair are reduced, processing efficiency is improved, and the construction accuracy of the full-load frame 1 of the camping-type coach is improved. Rework and repair are reduced, and work efficiency is improved. The stability and reliability of the frame 1 are enhanced.

[0040] like Figure 4 and Figure 5As shown, a positioning pin 23 is also installed on the first positioning plate 21. The positioning pin 23 installed on the first positioning plate 21 is used to cooperate with the positioning hole of the expansion mechanism mounting assembly 12 on the frame 1 to ensure the precise positioning of the mounting assembly on the frame 1. Through the cooperation between the positioning pin 23 and the positioning hole, the installation accuracy of the expansion mechanism mounting assembly 12 can be further improved and the assembly error can be reduced.

[0041] like Figure 6 As shown, multiple positioning pins 23 are respectively installed on each first positioning plate 21, which can provide multiple positioning points to enhance the stability and reliability of positioning. The synergistic effect of multiple positioning pins 23 can better constrain the position of the expansion mechanism installation component 12 to prevent it from moving or deforming during the construction process.

[0042] like Figure 2 As shown, a plurality of clamping mechanisms 22 are installed on the first positioning plate 21, and the clamping parts formed by the clamping mechanisms 22 are distributed at intervals, so that the same expansion mechanism installation assembly 12 on the frame 1 is clamped by at least two clamping mechanisms, and the clamping parts distributed at intervals can evenly clamp the expansion mechanism installation assembly 12 on the frame 1, ensuring its stability and accuracy during the entire construction process. Through the synergistic effect of the plurality of clamping mechanisms 22, the flatness and parallelism accuracy of the expansion mechanism installation assembly 12 can be better maintained.

[0043] A clamping portion is formed between the output end of the clamping mechanism 22 and the first positioning plate 21. Figure 8 As shown, the clamping part is used to clamp the expansion mechanism mounting assembly 12 on the frame 1. By adjusting the output end of the clamping mechanism 22, the clamping part can be opened and closed, thereby clamping or releasing the mounting assembly. In this embodiment, the clamping mechanism 22 can be a quick vertical clamp, a connecting rod clamp, etc.

[0044] like Figure 2 As shown, the support frame includes a bottom frame 25 and a top frame 26 connected to each other, and the top of the top frame 26 serves as a bearing surface for installing and positioning components. The bottom frame 25 provides stability and support, and the top frame 26 provides a flat bearing surface for installing and positioning the frame 1 and its components. Through the synergistic effect of the bottom frame 25 and the top frame 26, the stability and reliability of the entire tooling structure can be ensured.

[0045] like Figure 7 As shown, one end of the second positioning plate 24 is fixed to the support frame, and the other end extends outside the bearing surface and is provided with a positioning groove. The design of the positioning groove can further constrain the position of the frame 1 to prevent it from moving or offsetting during the construction process. Through the cooperation of the positioning groove and the positioning structure on the frame 1, the positioning accuracy and stability of the frame 1 can be improved.

[0046] In this embodiment, multiple grilles are arranged on both sides of the middle longitudinal beam of the full-load frame tooling of the camping type coach, and multiple supporting beams are arranged in parallel with the top frame 26. The supporting beams are arranged perpendicular to the grilles, and multiple positioning plates for positioning the grilles are arranged along the supporting beams. The positioning plates are U-shaped plates, and the opening positions of the U-shaped plates are used as positioning grooves to match the frame 1.

[0047] The full-load-bearing frame tooling of the camping-type coach is formed by welding rectangular tubes as a whole, and the material can be QSTE700TM. The first positioning plate 21 can be an 8mm thick steel plate made of 510L material. The height difference between the upper plane of the full-load-bearing frame 1 main body and the upper plane of the expansion mechanism mounting assembly 12 is 8mm.

[0048] The second positioning plate 24 is located between two adjacent first positioning mechanisms or between the first positioning mechanism and the end of the supporting frame, which can ensure uniform support and positioning of the frame 1 in the entire tooling structure.

[0049] like Figure 3 As shown, the first positioning mechanism is divided into two groups of positioning plates, which are symmetrically distributed on the bearing surface, and each group is provided with four first positioning plates 21. Two spaced-apart clamping mechanisms 22 are installed on each first positioning plate 21, and the second positioning plate 24 is configured as required. All first positioning plates 21 are coplanarly distributed, shaped to a flatness deviation of ≤0.5mm, and configured according to the distribution position of the expansion mechanism mounting assembly 12.

[0050] Example 2

[0051] In another typical embodiment of the present invention, Figure 1-Figure 8 As shown, a working method of a full-load frame tooling for a camping-type bus is provided, using the full-load frame tooling for a camping-type bus as in Example 1.

[0052] A working method of a full-load frame tooling for a camping-type bus, comprising:

[0053] The full load-bearing frame 1 is inverted and placed on the load-bearing surface, and the expansion mechanism mounting assembly 12 on the frame 1 is arranged one-to-one with the first positioning mechanism;

[0054] The expansion mechanism mounting assembly 12 on the frame 1 is clamped and fixed by the clamping mechanism 22 of the first positioning mechanism, and a plurality of second positioning plates 24 are provided at other positions of the frame 1 to fix the relative positions of the frame 1 and the supporting frame;

[0055] Processing of the vehicle frame 1 and installation of accessory components.

[0056] The clamping mechanism 22 clamps the vehicle frame 1 , keeps the expansion mechanism mounting assembly 12 on the vehicle frame 1 in contact with the first positioning plate 21 , corrects the flatness of the vehicle frame 1 and resists the shrinkage of the vehicle frame 1 during welding.

[0057] Specifically, the full-load frame 1 is inverted and placed on the tooling bearing surface, and the overall flatness is guaranteed to be within 3 mm, ensuring that the expansion mechanism installation assembly 12 is arranged one-to-one with the first positioning mechanism. The clamping mechanism 22 is used to clamp and fix the expansion mechanism installation assembly 12, so that the expansion mechanism installation assembly 12 can be completely fitted with the first positioning plate 21. Under the action of the clamping force, it can not only correct the flatness, but also reduce the shrinkage during welding, that is, the warping deformation. At the same time, multiple second positioning plates 24 cooperate with the frame body 11 to fix the relative position of the frame body 1 and the support frame. The frame 1 is processed and the auxiliary components are installed, and the entire welding process is completed on the tooling.

[0058] Under the restraint of the positioning assembly, the clamping mechanism 22 is released after the weld is cooled, and the positioning pin 23 is removed to offset the displacement and deformation caused by the welding heat.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A full-load frame tooling for a camping-type bus, characterized in that: It includes a support frame and a positioning assembly. The top of the support frame forms a bearing surface for supporting the frame. The positioning assembly includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism and the second positioning mechanism are distributed separately. The first positioning mechanism includes a plurality of first positioning plates fixed to the bearing surface. A clamping mechanism is installed on the first positioning plate. The clamping mechanism includes a clamping part for accommodating and clamping the expansion mechanism mounting assembly on the frame, and all the clamping parts are controlled to be coplanar. The second positioning mechanism includes a plurality of second positioning plates dispersedly arranged on the bearing surface to maintain the relative position of the frame and the support frame.

2. The full-load frame tooling for a camping-type bus as claimed in claim 1, characterized in that: The first positioning plate is provided with positioning pins for cooperating with the expansion mechanism installation assembly on the frame.

3. The full-load frame tooling for a camping-type bus as claimed in claim 2, characterized in that: A plurality of positioning pins are respectively installed on each of the first positioning plates.

4. The full-load frame tooling for a camping-type bus as claimed in claim 1, characterized in that: A plurality of clamping mechanisms are installed on the first positioning plate, and the clamping parts formed by the plurality of clamping mechanisms are distributed at intervals.

5. The full-load frame tooling for a camping-type coach as claimed in claim 4, characterized in that: A clamping portion is formed between the output end of the clamping mechanism and the first positioning plate.

6. The full-load frame tooling for a camping-type coach as claimed in claim 1, characterized in that: The support frame comprises a bottom frame and a top frame which are connected to each other. The top of the top frame serves as a bearing surface on which a positioning component is installed.

7. The full-load frame tooling for a camping-type coach as claimed in claim 1, characterized in that: One end of the second positioning plate is fixed to the supporting frame, and the other end extends out of the bearing surface and is provided with a positioning groove.

8. The full-load frame tooling for a camping-type coach as claimed in claim 7, characterized in that: The second positioning plate is located between two adjacent first positioning mechanisms or between the first positioning mechanism and the end of the supporting frame.

9. A method for operating a full-load frame tooling for a camping-type bus, using the full-load frame tooling for a camping-type bus as claimed in any one of claims 1 to 8, characterized in that: include: The full-load frame is inverted and placed on the load-bearing surface, and the expansion mechanism mounting components on the frame are arranged one by one with the first positioning mechanism; the expansion mechanism mounting components on the frame are clamped and fixed by the clamping mechanism of the first positioning mechanism, and other positions of the frame are matched with multiple second positioning plates to fix the relative positions of the frame and the support frame; Processing of the frame and installation of accessory components.

10. The working method of the full-load frame tooling of a camping-type bus as claimed in claim 9, characterized in that: The clamping mechanism clamps the vehicle frame, keeps the expansion mechanism mounting assembly on the vehicle frame in contact with the first positioning plate, corrects the flatness of the vehicle frame and resists shrinkage during frame welding.

Images