A flexible chassis combined pallet

Abstract

The utility model relates to a flexible chassis assembly tray, including a support plate and a plurality of groups of flexible switching positioning pins installed on the support plate, wherein the flexible switching positioning pins include: an inner conical base; an outer conical pin rotatably connected to the inner conical base; and a retractable assembly positioning pin connected to the inner part of the outer conical pin and having one end protruding from the top of the outer conical pin. Compared with the prior art, the utility model designs a chassis assembly tray that can be shared by multiple platform models under the premise of occupying very little space, and requires high positioning accuracy and long service life, so as to meet the needs of vehicle model switching under high cycle conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a flexible chassis combined pallet. Background Art

[0002] In the field of automobile production, the general flexible chassis combined pallet used to be suitable for one type of vehicle. In order to save costs and space, major automobile manufacturers now have a flexible pallet suitable for two or more types of vehicles. It is an indispensable conveying equipment in the automation of automobile production lines and plays an extremely important role in production and transportation. However, the current flexible pallet platform has poor compatibility, complex structure, large space occupation, poor positioning accuracy, short service life, and is difficult to meet the needs of vehicle model switching under high-beat conditions.

[0003] Patent publication number CN219382550U discloses a flexible pallet for switching positioning of multiple vehicle models, including a support plate, a first positioning device, a second positioning device and a third positioning device, wherein the first positioning device, the second positioning device and the third positioning device are arranged above the support plate, the first positioning device includes a first rear axle positioning pin, the first rear axle positioning pin is arranged above the support plate, and the first positioning device is used to load and position the G15 rear axle; the second positioning device includes a second rear axle positioning pin, the second rear axle positioning pin is arranged above the support plate, and the second positioning device is used to load and position the X11 rear axle; the third positioning device includes a third rear axle positioning pin, the third rear axle positioning pin is arranged above the support plate, and the third positioning device is used to load and position the 426 rear axle. Utility Model Content

[0004] The purpose of the utility model is to provide a flexible chassis assembly pallet in order to overcome the platform replacement compatibility problem existing in the above-mentioned prior art. A chassis assembly pallet that can be shared by multiple platform models is designed under the premise of occupying very little space, and has high positioning accuracy and long service life to meet the model switching needs under high cycle conditions.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A flexible chassis combined pallet comprises a support plate and a plurality of groups of flexible switching positioning pins mounted on the support plate, wherein the flexible switching positioning pins comprise:

[0007] Inner conical base;

[0008] An outer conical latch rotatably connected to the inner conical base;

[0009] A retractable assembly positioning pin is connected to the inside of the outer conical plug pin and one end of the retractable assembly positioning pin protrudes from the top of the outer conical plug pin.

[0010] Further, the inner conical base has an inner groove that crosses two surfaces of the inner conical base, and the top of the inner groove is a conical groove;

[0011] The external conical plug includes a plug body, a truncated cone connected to the bottom of the plug body, and an insert block connected to the bottom of the truncated cone. The diameter of the lower surface of the truncated cone is smaller than the diameter of the upper surface.

[0012] Furthermore, the insert block is inserted into the inner slot.

[0013] Furthermore, the conical slot has the same angle and size as the conical opening of the truncated cone, and the conical opening angle is 40° to 90°.

[0014] Furthermore, a slide groove is provided at the bottom of the outer conical pin, and a rotation axis passes through the slide groove and the inner conical base, and the rotation axis can move along the slide groove, and the outer conical pin rotates around the rotation axis. When the rotation axis is located at the bottom of the slide groove, the conical slot is separated from the truncated cone, and under the action of pressure, the outer conical pin moves downward, the rotation axis is located at the top of the slide groove, and the conical slot is fitted with the truncated cone.

[0015] Furthermore, the rotation angle of the outer tapered latch is -90° to 90°.

[0016] Furthermore, a limiting member is arranged below the rotating shaft and passes through the outer conical latch pin, and the limiting member includes a limiting shaft and a clamping plate fixed at one end of the limiting shaft.

[0017] Furthermore, a through hole is provided inside the outer conical plug pin, a spring is provided at the bottom of the through hole, and the assembled positioning pin is inserted into the through hole and is located above the spring.

[0018] Furthermore, a cover plate is fixed to the top of the through hole, and the cover plate is located around the assembly positioning pin.

[0019] Furthermore, a shaft sleeve is arranged between the assembled positioning pin and the cover plate.

[0020] Furthermore, a connecting rod is connected to the bottom of the cover plate, and the connecting rod is located inside the assembly positioning pin. When the assembly positioning pin moves upward, the connecting rod passes through the inside of the spring.

[0021] Furthermore, the inner conical base and the outer conical latch are processed by numerical control.

[0022] Furthermore, a support block is installed on one side of the flexible switching positioning pin to support the flexible switching positioning pin when the flexible switching positioning pin falls over.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] (1) The structure of the utility model can meet the chassis assembly pallet shared by multiple platform models, and has high positioning accuracy and long service life, and is suitable for the needs of model switching under high-beat conditions.

[0025] (2) The flexible switching positioning pin of the utility model adopts a conical plug-in type, and its structure is composed of an inner conical base and an outer conical plug support. The advantages of this double-conical mouth plug-in are: easy processing, light structure, good durability, extremely high repeated positioning accuracy, and simple manual operation.

[0026] (3) The inner conical base and outer conical pin of the utility model are processed by numerical control, which can well ensure the precision requirements when used for positioning in a vertical state. Because the double-conical mouth plug design will automatically align the two conical mouths under the pressure of the product, this design can achieve the requirements of long service life and high repeated positioning accuracy when using carbon structural steel without special treatment.

[0027] (4) The utility model has small size, high precision, good durability, low cost of subsequent maintenance, and strong convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the flexible chassis combined with the pallet shown in Example 1;

[0029] Figure 2 is a cross-sectional view of the flexible switching positioning pin shown in Example 1;

[0030] Figure 3 It is a structural schematic diagram of the working state of the flexible switching positioning pin shown in Example 1;

[0031] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0032] Figure 5 This is a structural schematic diagram of the overturned state of the flexible switching positioning pin shown in Example 1.

[0033] Description of symbols in the figure

[0034] 1-support plate, 11-support block;

[0035] 2-flexible switching positioning pin, 21-inner conical base, 211-inner slot, 212-conical slot, 22-outer conical plug, 221-plug body, 222-round table, 223-plug block, 224-through hole, 225-spring, 226-connecting rod, 227-cover plate, 228-shaft sleeve, 229-slide groove, 23-assembled positioning pin;

[0036] 3- Rotation axis;

[0037] 4-limiting member, 41-limiting shaft, 42-card plate. DETAILED DESCRIPTION

[0038] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments. In the following implementation methods or embodiments, if there is no special description of the functional components or structures, it indicates that they are all conventional components or conventional structures used in the field to achieve the corresponding functions.

[0039] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Example 1

[0042] like Figure 1 As shown, a flexible chassis combined with a pallet includes a support plate 1 and a plurality of groups of flexible switching positioning pins 2 mounted on the support plate 1, wherein the flexible switching positioning pins 2 include: Figure 2 As shown:

[0043] Inner conical base 21;

[0044] An outer conical latch pin 22 rotatably connected to the inner conical base 21;

[0045] A retractable assembly positioning pin 23 is connected to the inside of the outer conical plug pin 22 and one end of which protrudes from the top of the outer conical plug pin 22.

[0046] In this embodiment, the inner conical base 21 has an inner groove 211 that crosses the two sides of the inner conical base 21, and the top of the inner groove 211 is a conical groove 212;

[0047] The outer conical plug 22 includes a plug body 221, a truncated cone 222 connected to the bottom of the plug body 221, and an insert block 223 connected to the bottom of the truncated cone 222. The diameter of the lower surface of the truncated cone 222 is smaller than the diameter of the upper surface.

[0048] In this embodiment, it should be noted that: Figure 1 The flexible switching positioning pin 2 in the figure is a schematic diagram in which the working state and the overturned state of the outer conical pin 22 are concentrated in the same figure, rather than having two outer conical pins 22 on the inner conical base 21.

[0049] In this embodiment, the insert block 223 is inserted into the inner slot 211 .

[0050] In this embodiment, the tapered opening 212 and the truncated cone 222 have the same tapered opening angle and the same size, and the tapered opening angle is 67°.

[0051] In this embodiment, a slide groove 229 is provided at the bottom of the outer conical plug pin 22, and a rotating shaft 3 passes through the slide groove 229 and the inner conical base 21, and the rotating shaft 3 can move along the slide groove 229, and the outer conical plug pin 22 rotates around the rotating shaft 3. When the rotating shaft 3 is located at the bottom of the slide groove 229, the conical slot 212 is separated from the truncated cone 222, and under the action of pressure, the outer conical plug pin 22 moves downward, the rotating shaft 3 is located at the top of the slide groove 229, and the conical slot 212 is fitted with the truncated cone 222.

[0052] In this embodiment, a rotation axis 3 passes through the bottom of the outer conical plug pin 22 and the inner conical base 21 , and the outer conical plug pin 22 rotates around the rotation axis 3 .

[0053] In this embodiment, the rotation angle of the outer tapered plug pin 22 is -90° to 90°.

[0054] In this embodiment, a limiting member 4 is provided below the rotating shaft 3 and passes through the outer conical plug pin 22 . The limiting member 4 includes a limiting shaft 41 and a clamping plate 42 fixed at one end of the limiting shaft 41 .

[0055] In this embodiment, a through hole 224 is provided inside the outer conical plug pin 22 , a spring 225 is provided at the bottom of the through hole 224 , and the assembly positioning pin 23 is inserted into the through hole 224 and is located above the spring 225 .

[0056] In this embodiment, a cover plate 227 is fixed to the top of the through hole 224 , and the cover plate 227 is located around the assembly positioning pin 23 .

[0057] In this embodiment, a shaft sleeve 228 is provided between the assembly positioning pin 23 and the cover plate 227 .

[0058] In this embodiment, a connecting rod 226 is connected to the bottom of the cover plate 227 , and the connecting rod 226 is located inside the assembly positioning pin 23 . When the assembly positioning pin 23 moves upward, the connecting rod 226 passes through the inside of the spring 225 .

[0059] In this embodiment, the inner conical base 21 is the support of the entire flexible switching positioning pin 2, responsible for accuracy and load-bearing; the outer conical plug pin 22 is the main force-bearing part, responsible for accuracy and load-bearing; the assembly positioning pin 23 requires high strength and high wear resistance. The rotating shaft 3 is responsible for the rotation of the inner conical base 21 and the flexible switching positioning pin 2 when performing flexible switching, and the clamping plate 42 is used to position the rotating shaft 3.

[0060] In this embodiment, the inner conical base 21 and the outer conical plug pin 22 are processed by CNC.

[0061] In this embodiment, a support block 11 is installed on one side of the flexible switching positioning pin 2 to support the flexible switching positioning pin 2 when the flexible switching positioning pin 2 falls over.

[0062] The working process and working principle of the flexible chassis combined pallet are as follows:

[0063] like Figure 3 and 4 As shown, Figure 4 for Figure 3 The enlarged schematic diagram of the middle part shows that in the working state, the outer conical plug 22 does not flip, the assembly positioning pin 23 faces upward, the connecting rod 226 is at a certain distance from the spring 225, the spring 225 is tightened, and the assembly positioning pin 23 loads and positions the vehicle part. Since the assembly positioning pin 23 is inserted into the through hole 224 of the outer conical plug 22, and the assembly positioning pin 23 is in close contact with the through hole 224, the assembly positioning pin 23 will transfer the pressure to the outer conical plug 22 under the pressure of the vehicle part. Since the conical slot 212 and the cone 222 have the same angle and size, the outer conical plug 22 descends to make the rotating shaft 3 located at the top of the slide groove 229, and the conical slot 212 fits with the cone 222. Under the action of pressure, the outer conical plug 22 and the inner conical base 21 will fit with high precision around the central axis.

[0064] like Figures 3 to 5As shown, in the actual production process, several groups of flexible switching positioning pins 2 are installed on the support plate for flexible switching. For the switching of a single flexible switching positioning pin 2, the vehicle parts are loosened, the assembled positioning pin 23 is in a state of unstressed loading, the spring 225 is loosened, and the connecting rod 26 extends into the middle of the spring 225. Under the action of the spring 225, the outer conical plug 22 extends out of the through hole 224, and the flexible switching positioning pin 2 moves upward by gravity. At this time, the outer conical plug 22 is lifted, and the truncated table 222 leaves the conical slot 212. Under the action of gravity, the outer conical plug 22 tilts toward the side supported by the support block 11, the rotating shaft 3 rotates, and the clamping plate 42 is positioned to limit the rotation angle of the rotating shaft 3 to 90°, completing the tipping of the flexible switching positioning pin.

[0065] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A flexible chassis combined pallet, characterized in that: It comprises a support plate (1) and a plurality of groups of flexible switching positioning pins (2) mounted on the support plate (1), wherein the flexible switching positioning pins (2) comprise: Inner conical base (21); An outer conical latch pin (22) rotatably connected to the inner conical base (21); A retractable fitting positioning pin (23) is connected to the inside of the outer conical plug pin (22) and has one end protruding from the top of the outer conical plug pin (22).

2. A flexible chassis combined pallet according to claim 1, characterized in that: The inner conical base (21) has an inner groove (211) that crosses two surfaces of the inner conical base (21), and the top of the inner groove (211) is a conical groove (212); The external conical plug (22) comprises a plug body (221), a truncated cone (222) connected to the bottom of the plug body (221), and an insert block (223) connected to the bottom of the truncated cone (222); the diameter of the lower surface of the truncated cone (222) is smaller than the diameter of the upper surface.

3. A flexible chassis combined pallet according to claim 2, characterized in that: The insert block (223) is inserted into the inner slot (211).

4. The flexible chassis combined pallet according to claim 2, characterized in that: The conical slot (212) and the conical opening of the truncated cone (222) have the same angle and the same size.

5. The flexible chassis combined pallet according to claim 1, characterized in that: A slide groove (229) is provided at the bottom of the outer conical plug pin (22), and a rotating shaft (3) passes through the slide groove (229) and the inner conical base (21). The rotating shaft (3) can move along the slide groove (229), and the outer conical plug pin (22) rotates around the rotating shaft (3).

6. The flexible chassis combined pallet according to claim 5, characterized in that: The rotation angle of the outer conical plug pin (22) is -90° to 90°.

7. The flexible chassis combined pallet according to claim 5, characterized in that: A limit member (4) is provided below the rotating shaft (3) and passes through the outer conical plug pin (22); the limit member (4) comprises a limit shaft (41) and a clamping plate (42) fixed to one end of the limit shaft (41).

8. The flexible chassis combined pallet according to claim 1, characterized in that: A through hole (224) is arranged inside the outer conical plug pin (22), a spring (225) is arranged at the bottom of the through hole (224), and the assembly positioning pin (23) is inserted into the through hole (224) and is located above the spring (225).

9. The flexible chassis combined pallet according to claim 8, characterized in that: A cover plate (227) is fixed to the top end of the through hole (224), and the cover plate (227) is located around the assembly positioning pin (23).

10. The flexible chassis combined pallet according to claim 9, characterized in that: A connecting rod (226) is connected to the bottom of the cover plate (227), and the connecting rod (226) is located inside the assembly positioning pin (23). When the assembly positioning pin (23) moves upward, the connecting rod (226) passes through the inside of the spring (225).

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